diff options
Diffstat (limited to 'net/batman-adv')
61 files changed, 1406 insertions, 5297 deletions
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig index c762758a4649..860a0786bc1e 100644 --- a/net/batman-adv/Kconfig +++ b/net/batman-adv/Kconfig @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -# Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +# Copyright (C) B.A.T.M.A.N. contributors: # # Marek Lindner, Simon Wunderlich @@ -9,7 +9,6 @@ config BATMAN_ADV tristate "B.A.T.M.A.N. Advanced Meshing Protocol" - depends on NET select LIBCRC32C help B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is @@ -76,37 +75,14 @@ config BATMAN_ADV_MCAST reduce the air overhead while improving the reliability of multicast messages. -config BATMAN_ADV_DEBUGFS - bool "batman-adv debugfs entries" - depends on BATMAN_ADV - depends on DEBUG_FS - help - Enable this to export routing related debug tables via debugfs. - The information for each soft-interface and used hard-interface can be - found under batman_adv/ - - If unsure, say N. - config BATMAN_ADV_DEBUG bool "B.A.T.M.A.N. debugging" depends on BATMAN_ADV help This is an option for use by developers; most people should say N here. This enables compilation of support for - outputting debugging information to the debugfs log or tracing - buffer. The output is controlled via the batadv netdev specific - log_level setting. - -config BATMAN_ADV_SYSFS - bool "batman-adv sysfs entries" - depends on BATMAN_ADV - help - Say Y here if you want to enable batman-adv device configuration and - status interface through sysfs attributes. It is replaced by the - batadv generic netlink family but still used by various userspace - tools and scripts. - - If unsure, say Y. + outputting debugging information to the tracing buffer. The output is + controlled via the batadv netdev specific log_level setting. config BATMAN_ADV_TRACING bool "B.A.T.M.A.N. tracing support" diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile index daa49af7ff40..3bd0760c76a2 100644 --- a/net/batman-adv/Makefile +++ b/net/batman-adv/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -# Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +# Copyright (C) B.A.T.M.A.N. contributors: # # Marek Lindner, Simon Wunderlich @@ -11,14 +11,12 @@ batman-adv-$(CONFIG_BATMAN_ADV_BATMAN_V) += bat_v_elp.o batman-adv-$(CONFIG_BATMAN_ADV_BATMAN_V) += bat_v_ogm.o batman-adv-y += bitarray.o batman-adv-$(CONFIG_BATMAN_ADV_BLA) += bridge_loop_avoidance.o -batman-adv-$(CONFIG_BATMAN_ADV_DEBUGFS) += debugfs.o batman-adv-$(CONFIG_BATMAN_ADV_DAT) += distributed-arp-table.o batman-adv-y += fragmentation.o batman-adv-y += gateway_client.o batman-adv-y += gateway_common.o batman-adv-y += hard-interface.o batman-adv-y += hash.o -batman-adv-$(CONFIG_BATMAN_ADV_DEBUGFS) += icmp_socket.o batman-adv-$(CONFIG_BATMAN_ADV_DEBUG) += log.o batman-adv-y += main.o batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o @@ -28,7 +26,6 @@ batman-adv-y += originator.o batman-adv-y += routing.o batman-adv-y += send.o batman-adv-y += soft-interface.o -batman-adv-$(CONFIG_BATMAN_ADV_SYSFS) += sysfs.o batman-adv-$(CONFIG_BATMAN_ADV_TRACING) += trace.o batman-adv-y += tp_meter.o batman-adv-y += translation-table.o diff --git a/net/batman-adv/bat_algo.c b/net/batman-adv/bat_algo.c index 382fbe51fd34..4eee53d19eb0 100644 --- a/net/batman-adv/bat_algo.c +++ b/net/batman-adv/bat_algo.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -11,7 +11,6 @@ #include <linux/moduleparam.h> #include <linux/netlink.h> #include <linux/printk.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/stddef.h> #include <linux/string.h> @@ -34,7 +33,13 @@ void batadv_algo_init(void) INIT_HLIST_HEAD(&batadv_algo_list); } -static struct batadv_algo_ops *batadv_algo_get(char *name) +/** + * batadv_algo_get() - Search for algorithm with specific name + * @name: algorithm name to find + * + * Return: Pointer to batadv_algo_ops on success, NULL otherwise + */ +struct batadv_algo_ops *batadv_algo_get(const char *name) { struct batadv_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp; @@ -97,7 +102,7 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) * * Return: 0 on success or negative error number in case of failure */ -int batadv_algo_select(struct batadv_priv *bat_priv, char *name) +int batadv_algo_select(struct batadv_priv *bat_priv, const char *name) { struct batadv_algo_ops *bat_algo_ops; @@ -110,29 +115,6 @@ int batadv_algo_select(struct batadv_priv *bat_priv, char *name) return 0; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -/** - * batadv_algo_seq_print_text() - Print the supported algorithms in a seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_algo_seq_print_text(struct seq_file *seq, void *offset) -{ - struct batadv_algo_ops *bat_algo_ops; - - seq_puts(seq, "Available routing algorithms:\n"); - - hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) { - seq_printf(seq, " * %s\n", bat_algo_ops->name); - } - - return 0; -} -#endif - static int batadv_param_set_ra(const char *val, const struct kernel_param *kp) { struct batadv_algo_ops *bat_algo_ops; diff --git a/net/batman-adv/bat_algo.h b/net/batman-adv/bat_algo.h index 686a60bc9492..2c486374af58 100644 --- a/net/batman-adv/bat_algo.h +++ b/net/batman-adv/bat_algo.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Linus Lüssing */ @@ -10,7 +10,6 @@ #include "main.h" #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> @@ -18,9 +17,9 @@ extern char batadv_routing_algo[]; extern struct list_head batadv_hardif_list; void batadv_algo_init(void); +struct batadv_algo_ops *batadv_algo_get(const char *name); int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops); -int batadv_algo_select(struct batadv_priv *bat_priv, char *name); -int batadv_algo_seq_print_text(struct seq_file *seq, void *offset); +int batadv_algo_select(struct batadv_priv *bat_priv, const char *name); int batadv_algo_dump(struct sk_buff *msg, struct netlink_callback *cb); #endif /* _NET_BATMAN_ADV_BAT_ALGO_H_ */ diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index a7c8dd7ae513..7f6a7c96ac92 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -13,13 +13,13 @@ #include <linux/bug.h> #include <linux/byteorder/generic.h> #include <linux/cache.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> @@ -27,11 +27,11 @@ #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/pkt_sched.h> +#include <linux/prandom.h> #include <linux/printk.h> #include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -134,7 +134,7 @@ static u8 batadv_ring_buffer_avg(const u8 lq_recv[]) * * Return: the originator object corresponding to the passed mac address or NULL * on failure. - * If the object does not exists it is created an initialised. + * If the object does not exist, it is created and initialised. */ static struct batadv_orig_node * batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const u8 *addr) @@ -280,7 +280,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv) unsigned int msecs; msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER; - msecs += prandom_u32() % (2 * BATADV_JITTER); + msecs += prandom_u32_max(2 * BATADV_JITTER); return jiffies + msecs_to_jiffies(msecs); } @@ -288,7 +288,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv) /* when do we schedule a ogm packet to be sent */ static unsigned long batadv_iv_ogm_fwd_send_time(void) { - return jiffies + msecs_to_jiffies(prandom_u32() % (BATADV_JITTER / 2)); + return jiffies + msecs_to_jiffies(prandom_u32_max(BATADV_JITTER / 2)); } /* apply hop penalty for a normal link */ @@ -409,8 +409,10 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) if (WARN_ON(!forw_packet->if_outgoing)) return; - if (WARN_ON(forw_packet->if_outgoing->soft_iface != soft_iface)) + if (forw_packet->if_outgoing->soft_iface != soft_iface) { + pr_warn("%s: soft interface switch for queued OGM\n", __func__); return; + } if (forw_packet->if_incoming->if_status != BATADV_IF_ACTIVE) return; @@ -456,7 +458,7 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet, * if: * * - the send time is within our MAX_AGGREGATION_MS time - * - the resulting packet wont be bigger than + * - the resulting packet won't be bigger than * MAX_AGGREGATION_BYTES * otherwise aggregation is not possible */ @@ -517,8 +519,7 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet, } out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); return res; } @@ -855,8 +856,7 @@ static void batadv_iv_ogm_schedule_buff(struct batadv_hard_iface *hard_iface) rcu_read_unlock(); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) @@ -871,7 +871,7 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) } /** - * batadv_iv_orig_ifinfo_sum() - Get bcast_own sum for originator over iterface + * batadv_iv_orig_ifinfo_sum() - Get bcast_own sum for originator over interface * @orig_node: originator which reproadcasted the OGMs directly * @if_outgoing: interface which transmitted the original OGM and received the * direct rebroadcast @@ -1044,14 +1044,10 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, unlock: rcu_read_unlock(); out: - if (neigh_node) - batadv_neigh_node_put(neigh_node); - if (router) - batadv_neigh_node_put(router); - if (neigh_ifinfo) - batadv_neigh_ifinfo_put(neigh_ifinfo); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_node_put(neigh_node); + batadv_neigh_node_put(router); + batadv_neigh_ifinfo_put(neigh_ifinfo); + batadv_neigh_ifinfo_put(router_ifinfo); } /** @@ -1075,10 +1071,10 @@ static bool batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node, struct batadv_neigh_ifinfo *neigh_ifinfo; u8 total_count; u8 orig_eq_count, neigh_rq_count, neigh_rq_inv, tq_own; + unsigned int tq_iface_hop_penalty = BATADV_TQ_MAX_VALUE; unsigned int neigh_rq_inv_cube, neigh_rq_max_cube; unsigned int tq_asym_penalty, inv_asym_penalty; unsigned int combined_tq; - unsigned int tq_iface_penalty; bool ret = false; /* find corresponding one hop neighbor */ @@ -1157,31 +1153,32 @@ static bool batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node, inv_asym_penalty = BATADV_TQ_MAX_VALUE * neigh_rq_inv_cube; inv_asym_penalty /= neigh_rq_max_cube; tq_asym_penalty = BATADV_TQ_MAX_VALUE - inv_asym_penalty; + tq_iface_hop_penalty -= atomic_read(&if_incoming->hop_penalty); /* penalize if the OGM is forwarded on the same interface. WiFi * interfaces and other half duplex devices suffer from throughput * drops as they can't send and receive at the same time. */ - tq_iface_penalty = BATADV_TQ_MAX_VALUE; if (if_outgoing && if_incoming == if_outgoing && batadv_is_wifi_hardif(if_outgoing)) - tq_iface_penalty = batadv_hop_penalty(BATADV_TQ_MAX_VALUE, - bat_priv); + tq_iface_hop_penalty = batadv_hop_penalty(tq_iface_hop_penalty, + bat_priv); combined_tq = batadv_ogm_packet->tq * tq_own * tq_asym_penalty * - tq_iface_penalty; + tq_iface_hop_penalty; combined_tq /= BATADV_TQ_MAX_VALUE * BATADV_TQ_MAX_VALUE * BATADV_TQ_MAX_VALUE; batadv_ogm_packet->tq = combined_tq; batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "bidirectional: orig = %pM neigh = %pM => own_bcast = %2i, real recv = %2i, local tq: %3i, asym_penalty: %3i, iface_penalty: %3i, total tq: %3i, if_incoming = %s, if_outgoing = %s\n", + "bidirectional: orig = %pM neigh = %pM => own_bcast = %2i, real recv = %2i, local tq: %3i, asym_penalty: %3i, iface_hop_penalty: %3i, total tq: %3i, if_incoming = %s, if_outgoing = %s\n", orig_node->orig, orig_neigh_node->orig, total_count, - neigh_rq_count, tq_own, tq_asym_penalty, tq_iface_penalty, - batadv_ogm_packet->tq, if_incoming->net_dev->name, + neigh_rq_count, tq_own, tq_asym_penalty, + tq_iface_hop_penalty, batadv_ogm_packet->tq, + if_incoming->net_dev->name, if_outgoing ? if_outgoing->net_dev->name : "DEFAULT"); /* if link has the minimum required transmission quality @@ -1191,8 +1188,7 @@ static bool batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node, ret = true; out: - if (neigh_node) - batadv_neigh_node_put(neigh_node); + batadv_neigh_node_put(neigh_node); return ret; } @@ -1493,16 +1489,11 @@ out_neigh: if (orig_neigh_node && !is_single_hop_neigh) batadv_orig_node_put(orig_neigh_node); out: - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); - if (router) - batadv_neigh_node_put(router); - if (router_router) - batadv_neigh_node_put(router_router); - if (orig_neigh_router) - batadv_neigh_node_put(orig_neigh_router); - if (hardif_neigh) - batadv_hardif_neigh_put(hardif_neigh); + batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_node_put(router); + batadv_neigh_node_put(router_router); + batadv_neigh_node_put(orig_neigh_router); + batadv_hardif_neigh_put(hardif_neigh); consume_skb(skb_priv); } @@ -1554,7 +1545,7 @@ static void batadv_iv_ogm_process_reply(struct batadv_ogm_packet *ogm_packet, * batadv_iv_ogm_process() - process an incoming batman iv OGM * @skb: the skb containing the OGM * @ogm_offset: offset to the OGM which should be processed (for aggregates) - * @if_incoming: the interface where this packet was receved + * @if_incoming: the interface where this packet was received */ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, struct batadv_hard_iface *if_incoming) @@ -1778,106 +1769,6 @@ free_skb: return ret; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_iv_ogm_orig_print_neigh() - print neighbors for the originator table - * @orig_node: the orig_node for which the neighbors are printed - * @if_outgoing: outgoing interface for these entries - * @seq: debugfs table seq_file struct - * - * Must be called while holding an rcu lock. - */ -static void -batadv_iv_ogm_orig_print_neigh(struct batadv_orig_node *orig_node, - struct batadv_hard_iface *if_outgoing, - struct seq_file *seq) -{ - struct batadv_neigh_node *neigh_node; - struct batadv_neigh_ifinfo *n_ifinfo; - - hlist_for_each_entry_rcu(neigh_node, &orig_node->neigh_list, list) { - n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing); - if (!n_ifinfo) - continue; - - seq_printf(seq, " %pM (%3i)", - neigh_node->addr, - n_ifinfo->bat_iv.tq_avg); - - batadv_neigh_ifinfo_put(n_ifinfo); - } -} - -/** - * batadv_iv_ogm_orig_print() - print the originator table - * @bat_priv: the bat priv with all the soft interface information - * @seq: debugfs table seq_file struct - * @if_outgoing: the outgoing interface for which this should be printed - */ -static void batadv_iv_ogm_orig_print(struct batadv_priv *bat_priv, - struct seq_file *seq, - struct batadv_hard_iface *if_outgoing) -{ - struct batadv_neigh_node *neigh_node; - struct batadv_hashtable *hash = bat_priv->orig_hash; - int last_seen_msecs, last_seen_secs; - struct batadv_orig_node *orig_node; - struct batadv_neigh_ifinfo *n_ifinfo; - unsigned long last_seen_jiffies; - struct hlist_head *head; - int batman_count = 0; - u32 i; - - seq_puts(seq, - " Originator last-seen (#/255) Nexthop [outgoingIF]: Potential nexthops ...\n"); - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - neigh_node = batadv_orig_router_get(orig_node, - if_outgoing); - if (!neigh_node) - continue; - - n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, - if_outgoing); - if (!n_ifinfo) - goto next; - - if (n_ifinfo->bat_iv.tq_avg == 0) - goto next; - - last_seen_jiffies = jiffies - orig_node->last_seen; - last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); - last_seen_secs = last_seen_msecs / 1000; - last_seen_msecs = last_seen_msecs % 1000; - - seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", - orig_node->orig, last_seen_secs, - last_seen_msecs, n_ifinfo->bat_iv.tq_avg, - neigh_node->addr, - neigh_node->if_incoming->net_dev->name); - - batadv_iv_ogm_orig_print_neigh(orig_node, if_outgoing, - seq); - seq_putc(seq, '\n'); - batman_count++; - -next: - batadv_neigh_node_put(neigh_node); - if (n_ifinfo) - batadv_neigh_ifinfo_put(n_ifinfo); - } - rcu_read_unlock(); - } - - if (batman_count == 0) - seq_puts(seq, "No batman nodes in range ...\n"); -} -#endif - /** * batadv_iv_ogm_neigh_get_tq_avg() - Get the TQ average for a neighbour on a * given outgoing interface. @@ -1948,6 +1839,8 @@ batadv_iv_ogm_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, orig_node->orig) || nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN, neigh_node->addr) || + nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, + neigh_node->if_incoming->net_dev->name) || nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, neigh_node->if_incoming->net_dev->ifindex) || nla_put_u8(msg, BATADV_ATTR_TQ, tq_avg) || @@ -2021,8 +1914,7 @@ batadv_iv_ogm_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } out: - if (neigh_node_best) - batadv_neigh_node_put(neigh_node_best); + batadv_neigh_node_put(neigh_node_best); *sub_s = 0; return 0; @@ -2107,59 +1999,6 @@ batadv_iv_ogm_orig_dump(struct sk_buff *msg, struct netlink_callback *cb, cb->args[2] = sub; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_iv_hardif_neigh_print() - print a single hop neighbour node - * @seq: neighbour table seq_file struct - * @hardif_neigh: hardif neighbour information - */ -static void -batadv_iv_hardif_neigh_print(struct seq_file *seq, - struct batadv_hardif_neigh_node *hardif_neigh) -{ - int last_secs, last_msecs; - - last_secs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen) / 1000; - last_msecs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen) % 1000; - - seq_printf(seq, " %10s %pM %4i.%03is\n", - hardif_neigh->if_incoming->net_dev->name, - hardif_neigh->addr, last_secs, last_msecs); -} - -/** - * batadv_iv_ogm_neigh_print() - print the single hop neighbour list - * @bat_priv: the bat priv with all the soft interface information - * @seq: neighbour table seq_file struct - */ -static void batadv_iv_neigh_print(struct batadv_priv *bat_priv, - struct seq_file *seq) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_hardif_neigh_node *hardif_neigh; - struct batadv_hard_iface *hard_iface; - int batman_count = 0; - - seq_puts(seq, " IF Neighbor last-seen\n"); - - rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != net_dev) - continue; - - hlist_for_each_entry_rcu(hardif_neigh, - &hard_iface->neigh_list, list) { - batadv_iv_hardif_neigh_print(seq, hardif_neigh); - batman_count++; - } - } - rcu_read_unlock(); - - if (batman_count == 0) - seq_puts(seq, "No batman nodes in range ...\n"); -} -#endif - /** * batadv_iv_ogm_neigh_diff() - calculate tq difference of two neighbors * @neigh1: the first neighbor object of the comparison @@ -2197,10 +2036,8 @@ static bool batadv_iv_ogm_neigh_diff(struct batadv_neigh_node *neigh1, *diff = (int)tq1 - (int)tq2; out: - if (neigh1_ifinfo) - batadv_neigh_ifinfo_put(neigh1_ifinfo); - if (neigh2_ifinfo) - batadv_neigh_ifinfo_put(neigh2_ifinfo); + batadv_neigh_ifinfo_put(neigh1_ifinfo); + batadv_neigh_ifinfo_put(neigh2_ifinfo); return ret; } @@ -2230,6 +2067,8 @@ batadv_iv_ogm_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq, if (nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN, hardif_neigh->addr) || + nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, + hardif_neigh->if_incoming->net_dev->name) || nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, hardif_neigh->if_incoming->net_dev->ifindex) || nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS, @@ -2288,7 +2127,7 @@ batadv_iv_ogm_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq, * @msg: Netlink message to dump into * @cb: Control block containing additional options * @bat_priv: The bat priv with all the soft interface information - * @single_hardif: Limit dump to this hard interfaace + * @single_hardif: Limit dump to this hard interface */ static void batadv_iv_ogm_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, @@ -2445,8 +2284,7 @@ batadv_iv_gw_get_best_gw_node(struct batadv_priv *bat_priv) if (tmp_gw_factor > max_gw_factor || (tmp_gw_factor == max_gw_factor && tq_avg > max_tq)) { - if (curr_gw) - batadv_gw_node_put(curr_gw); + batadv_gw_node_put(curr_gw); curr_gw = gw_node; kref_get(&curr_gw->refcount); } @@ -2460,8 +2298,7 @@ batadv_iv_gw_get_best_gw_node(struct batadv_priv *bat_priv) * $routing_class more tq points) */ if (tq_avg > max_tq) { - if (curr_gw) - batadv_gw_node_put(curr_gw); + batadv_gw_node_put(curr_gw); curr_gw = gw_node; kref_get(&curr_gw->refcount); } @@ -2478,8 +2315,7 @@ batadv_iv_gw_get_best_gw_node(struct batadv_priv *bat_priv) next: batadv_neigh_node_put(router); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_ifinfo_put(router_ifinfo); } rcu_read_unlock(); @@ -2543,84 +2379,14 @@ static bool batadv_iv_gw_is_eligible(struct batadv_priv *bat_priv, ret = true; out: - if (router_gw_ifinfo) - batadv_neigh_ifinfo_put(router_gw_ifinfo); - if (router_orig_ifinfo) - batadv_neigh_ifinfo_put(router_orig_ifinfo); - if (router_gw) - batadv_neigh_node_put(router_gw); - if (router_orig) - batadv_neigh_node_put(router_orig); + batadv_neigh_ifinfo_put(router_gw_ifinfo); + batadv_neigh_ifinfo_put(router_orig_ifinfo); + batadv_neigh_node_put(router_gw); + batadv_neigh_node_put(router_orig); return ret; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/* fails if orig_node has no router */ -static int batadv_iv_gw_write_buffer_text(struct batadv_priv *bat_priv, - struct seq_file *seq, - const struct batadv_gw_node *gw_node) -{ - struct batadv_gw_node *curr_gw; - struct batadv_neigh_node *router; - struct batadv_neigh_ifinfo *router_ifinfo = NULL; - int ret = -1; - - router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT); - if (!router) - goto out; - - router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT); - if (!router_ifinfo) - goto out; - - curr_gw = batadv_gw_get_selected_gw_node(bat_priv); - - seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %u.%u/%u.%u MBit\n", - (curr_gw == gw_node ? "=>" : " "), - gw_node->orig_node->orig, - router_ifinfo->bat_iv.tq_avg, router->addr, - router->if_incoming->net_dev->name, - gw_node->bandwidth_down / 10, - gw_node->bandwidth_down % 10, - gw_node->bandwidth_up / 10, - gw_node->bandwidth_up % 10); - ret = seq_has_overflowed(seq) ? -1 : 0; - - if (curr_gw) - batadv_gw_node_put(curr_gw); -out: - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); - if (router) - batadv_neigh_node_put(router); - return ret; -} - -static void batadv_iv_gw_print(struct batadv_priv *bat_priv, - struct seq_file *seq) -{ - struct batadv_gw_node *gw_node; - int gw_count = 0; - - seq_puts(seq, - " Gateway (#/255) Nexthop [outgoingIF]: advertised uplink bandwidth\n"); - - rcu_read_lock(); - hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.gateway_list, list) { - /* fails if orig_node has no router */ - if (batadv_iv_gw_write_buffer_text(bat_priv, seq, gw_node) < 0) - continue; - - gw_count++; - } - rcu_read_unlock(); - - if (gw_count == 0) - seq_puts(seq, "No gateways in range ...\n"); -} -#endif - /** * batadv_iv_gw_dump_entry() - Dump a gateway into a message * @msg: Netlink message to dump into @@ -2677,6 +2443,8 @@ static int batadv_iv_gw_dump_entry(struct sk_buff *msg, u32 portid, router->addr) || nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, router->if_incoming->net_dev->name) || + nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, + router->if_incoming->net_dev->ifindex) || nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_DOWN, gw_node->bandwidth_down) || nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_UP, @@ -2689,12 +2457,9 @@ static int batadv_iv_gw_dump_entry(struct sk_buff *msg, u32 portid, ret = 0; out: - if (curr_gw) - batadv_gw_node_put(curr_gw); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); - if (router) - batadv_neigh_node_put(router); + batadv_gw_node_put(curr_gw); + batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_node_put(router); return ret; } @@ -2745,24 +2510,15 @@ static struct batadv_algo_ops batadv_batman_iv __read_mostly = { .neigh = { .cmp = batadv_iv_ogm_neigh_cmp, .is_similar_or_better = batadv_iv_ogm_neigh_is_sob, -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - .print = batadv_iv_neigh_print, -#endif .dump = batadv_iv_ogm_neigh_dump, }, .orig = { -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - .print = batadv_iv_ogm_orig_print, -#endif .dump = batadv_iv_ogm_orig_dump, }, .gw = { .init_sel_class = batadv_iv_init_sel_class, .get_best_gw_node = batadv_iv_gw_get_best_gw_node, .is_eligible = batadv_iv_gw_is_eligible, -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - .print = batadv_iv_gw_print, -#endif .dump = batadv_iv_gw_dump, }, }; diff --git a/net/batman-adv/bat_iv_ogm.h b/net/batman-adv/bat_iv_ogm.h index 0c57c1000c64..04b01bd684e8 100644 --- a/net/batman-adv/bat_iv_ogm.h +++ b/net/batman-adv/bat_iv_ogm.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index 0ecaf1bb0068..54e41fc709c3 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2013-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Linus Lüssing, Marek Lindner */ @@ -13,14 +13,13 @@ #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> +#include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/spinlock.h> #include <linux/stddef.h> @@ -107,8 +106,7 @@ static void batadv_v_iface_update_mac(struct batadv_hard_iface *hard_iface) batadv_v_primary_iface_set(hard_iface); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } static void @@ -119,92 +117,6 @@ batadv_v_hardif_neigh_init(struct batadv_hardif_neigh_node *hardif_neigh) batadv_v_elp_throughput_metric_update); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_v_orig_print_neigh() - print neighbors for the originator table - * @orig_node: the orig_node for which the neighbors are printed - * @if_outgoing: outgoing interface for these entries - * @seq: debugfs table seq_file struct - * - * Must be called while holding an rcu lock. - */ -static void -batadv_v_orig_print_neigh(struct batadv_orig_node *orig_node, - struct batadv_hard_iface *if_outgoing, - struct seq_file *seq) -{ - struct batadv_neigh_node *neigh_node; - struct batadv_neigh_ifinfo *n_ifinfo; - - hlist_for_each_entry_rcu(neigh_node, &orig_node->neigh_list, list) { - n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing); - if (!n_ifinfo) - continue; - - seq_printf(seq, " %pM (%9u.%1u)", - neigh_node->addr, - n_ifinfo->bat_v.throughput / 10, - n_ifinfo->bat_v.throughput % 10); - - batadv_neigh_ifinfo_put(n_ifinfo); - } -} - -/** - * batadv_v_hardif_neigh_print() - print a single ELP neighbour node - * @seq: neighbour table seq_file struct - * @hardif_neigh: hardif neighbour information - */ -static void -batadv_v_hardif_neigh_print(struct seq_file *seq, - struct batadv_hardif_neigh_node *hardif_neigh) -{ - int last_secs, last_msecs; - u32 throughput; - - last_secs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen) / 1000; - last_msecs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen) % 1000; - throughput = ewma_throughput_read(&hardif_neigh->bat_v.throughput); - - seq_printf(seq, "%pM %4i.%03is (%9u.%1u) [%10s]\n", - hardif_neigh->addr, last_secs, last_msecs, throughput / 10, - throughput % 10, hardif_neigh->if_incoming->net_dev->name); -} - -/** - * batadv_v_neigh_print() - print the single hop neighbour list - * @bat_priv: the bat priv with all the soft interface information - * @seq: neighbour table seq_file struct - */ -static void batadv_v_neigh_print(struct batadv_priv *bat_priv, - struct seq_file *seq) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_hardif_neigh_node *hardif_neigh; - struct batadv_hard_iface *hard_iface; - int batman_count = 0; - - seq_puts(seq, - " Neighbor last-seen ( throughput) [ IF]\n"); - - rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != net_dev) - continue; - - hlist_for_each_entry_rcu(hardif_neigh, - &hard_iface->neigh_list, list) { - batadv_v_hardif_neigh_print(seq, hardif_neigh); - batman_count++; - } - } - rcu_read_unlock(); - - if (batman_count == 0) - seq_puts(seq, "No batman nodes in range ...\n"); -} -#endif - /** * batadv_v_neigh_dump_neigh() - Dump a neighbour into a message * @msg: Netlink message to dump into @@ -233,6 +145,8 @@ batadv_v_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq, if (nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN, hardif_neigh->addr) || + nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, + hardif_neigh->if_incoming->net_dev->name) || nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, hardif_neigh->if_incoming->net_dev->ifindex) || nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS, @@ -337,75 +251,6 @@ batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, cb->args[1] = idx; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_v_orig_print() - print the originator table - * @bat_priv: the bat priv with all the soft interface information - * @seq: debugfs table seq_file struct - * @if_outgoing: the outgoing interface for which this should be printed - */ -static void batadv_v_orig_print(struct batadv_priv *bat_priv, - struct seq_file *seq, - struct batadv_hard_iface *if_outgoing) -{ - struct batadv_neigh_node *neigh_node; - struct batadv_hashtable *hash = bat_priv->orig_hash; - int last_seen_msecs, last_seen_secs; - struct batadv_orig_node *orig_node; - struct batadv_neigh_ifinfo *n_ifinfo; - unsigned long last_seen_jiffies; - struct hlist_head *head; - int batman_count = 0; - u32 i; - - seq_puts(seq, - " Originator last-seen ( throughput) Nexthop [outgoingIF]: Potential nexthops ...\n"); - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - neigh_node = batadv_orig_router_get(orig_node, - if_outgoing); - if (!neigh_node) - continue; - - n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, - if_outgoing); - if (!n_ifinfo) - goto next; - - last_seen_jiffies = jiffies - orig_node->last_seen; - last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); - last_seen_secs = last_seen_msecs / 1000; - last_seen_msecs = last_seen_msecs % 1000; - - seq_printf(seq, "%pM %4i.%03is (%9u.%1u) %pM [%10s]:", - orig_node->orig, last_seen_secs, - last_seen_msecs, - n_ifinfo->bat_v.throughput / 10, - n_ifinfo->bat_v.throughput % 10, - neigh_node->addr, - neigh_node->if_incoming->net_dev->name); - - batadv_v_orig_print_neigh(orig_node, if_outgoing, seq); - seq_putc(seq, '\n'); - batman_count++; - -next: - batadv_neigh_node_put(neigh_node); - if (n_ifinfo) - batadv_neigh_ifinfo_put(n_ifinfo); - } - rcu_read_unlock(); - } - - if (batman_count == 0) - seq_puts(seq, "No batman nodes in range ...\n"); -} -#endif - /** * batadv_v_orig_dump_subentry() - Dump an originator subentry into a message * @msg: Netlink message to dump into @@ -454,6 +299,8 @@ batadv_v_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, orig_node->orig) || nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN, neigh_node->addr) || + nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, + neigh_node->if_incoming->net_dev->name) || nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, neigh_node->if_incoming->net_dev->ifindex) || nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput) || @@ -518,8 +365,7 @@ batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } out: - if (neigh_node_best) - batadv_neigh_node_put(neigh_node_best); + batadv_neigh_node_put(neigh_node_best); *sub_s = 0; return 0; @@ -685,13 +531,6 @@ static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv, return count; } -static ssize_t batadv_v_show_sel_class(struct batadv_priv *bat_priv, char *buff) -{ - u32 class = atomic_read(&bat_priv->gw.sel_class); - - return sprintf(buff, "%u.%u MBit\n", class / 10, class % 10); -} - /** * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW * @gw_node: the GW to retrieve the metric for @@ -727,10 +566,8 @@ static int batadv_v_gw_throughput_get(struct batadv_gw_node *gw_node, u32 *bw) ret = 0; out: - if (router) - batadv_neigh_node_put(router); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_node_put(router); + batadv_neigh_ifinfo_put(router_ifinfo); return ret; } @@ -758,8 +595,7 @@ batadv_v_gw_get_best_gw_node(struct batadv_priv *bat_priv) if (curr_gw && bw <= max_bw) goto next; - if (curr_gw) - batadv_gw_node_put(curr_gw); + batadv_gw_node_put(curr_gw); curr_gw = gw_node; kref_get(&curr_gw->refcount); @@ -821,86 +657,12 @@ static bool batadv_v_gw_is_eligible(struct batadv_priv *bat_priv, ret = true; out: - if (curr_gw) - batadv_gw_node_put(curr_gw); - if (orig_gw) - batadv_gw_node_put(orig_gw); + batadv_gw_node_put(curr_gw); + batadv_gw_node_put(orig_gw); return ret; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/* fails if orig_node has no router */ -static int batadv_v_gw_write_buffer_text(struct batadv_priv *bat_priv, - struct seq_file *seq, - const struct batadv_gw_node *gw_node) -{ - struct batadv_gw_node *curr_gw; - struct batadv_neigh_node *router; - struct batadv_neigh_ifinfo *router_ifinfo = NULL; - int ret = -1; - - router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT); - if (!router) - goto out; - - router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT); - if (!router_ifinfo) - goto out; - - curr_gw = batadv_gw_get_selected_gw_node(bat_priv); - - seq_printf(seq, "%s %pM (%9u.%1u) %pM [%10s]: %u.%u/%u.%u MBit\n", - (curr_gw == gw_node ? "=>" : " "), - gw_node->orig_node->orig, - router_ifinfo->bat_v.throughput / 10, - router_ifinfo->bat_v.throughput % 10, router->addr, - router->if_incoming->net_dev->name, - gw_node->bandwidth_down / 10, - gw_node->bandwidth_down % 10, - gw_node->bandwidth_up / 10, - gw_node->bandwidth_up % 10); - ret = seq_has_overflowed(seq) ? -1 : 0; - - if (curr_gw) - batadv_gw_node_put(curr_gw); -out: - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); - if (router) - batadv_neigh_node_put(router); - return ret; -} - -/** - * batadv_v_gw_print() - print the gateway list - * @bat_priv: the bat priv with all the soft interface information - * @seq: gateway table seq_file struct - */ -static void batadv_v_gw_print(struct batadv_priv *bat_priv, - struct seq_file *seq) -{ - struct batadv_gw_node *gw_node; - int gw_count = 0; - - seq_puts(seq, - " Gateway ( throughput) Nexthop [outgoingIF]: advertised uplink bandwidth\n"); - - rcu_read_lock(); - hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.gateway_list, list) { - /* fails if orig_node has no router */ - if (batadv_v_gw_write_buffer_text(bat_priv, seq, gw_node) < 0) - continue; - - gw_count++; - } - rcu_read_unlock(); - - if (gw_count == 0) - seq_puts(seq, "No gateways in range ...\n"); -} -#endif - /** * batadv_v_gw_dump_entry() - Dump a gateway into a message * @msg: Netlink message to dump into @@ -974,6 +736,12 @@ static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid, goto out; } + if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, + router->if_incoming->net_dev->ifindex)) { + genlmsg_cancel(msg, hdr); + goto out; + } + if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_DOWN, gw_node->bandwidth_down)) { genlmsg_cancel(msg, hdr); @@ -989,12 +757,9 @@ static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid, ret = 0; out: - if (curr_gw) - batadv_gw_node_put(curr_gw); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); - if (router) - batadv_neigh_node_put(router); + batadv_gw_node_put(curr_gw); + batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_node_put(router); return ret; } @@ -1046,26 +811,16 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = { .hardif_init = batadv_v_hardif_neigh_init, .cmp = batadv_v_neigh_cmp, .is_similar_or_better = batadv_v_neigh_is_sob, -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - .print = batadv_v_neigh_print, -#endif .dump = batadv_v_neigh_dump, }, .orig = { -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - .print = batadv_v_orig_print, -#endif .dump = batadv_v_orig_dump, }, .gw = { .init_sel_class = batadv_v_init_sel_class, .store_sel_class = batadv_v_store_sel_class, - .show_sel_class = batadv_v_show_sel_class, .get_best_gw_node = batadv_v_gw_get_best_gw_node, .is_eligible = batadv_v_gw_is_eligible, -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - .print = batadv_v_gw_print, -#endif .dump = batadv_v_gw_dump, }, }; diff --git a/net/batman-adv/bat_v.h b/net/batman-adv/bat_v.h index 5e0be10bc84e..964431f4dc8d 100644 --- a/net/batman-adv/bat_v.h +++ b/net/batman-adv/bat_v.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Linus Lüssing */ diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 1e3172db7492..f1741fbfb617 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Linus Lüssing, Marek Lindner */ @@ -10,16 +10,18 @@ #include <linux/atomic.h> #include <linux/bitops.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> +#include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/nl80211.h> +#include <linux/prandom.h> #include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> @@ -49,7 +51,7 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface) unsigned int msecs; msecs = atomic_read(&hard_iface->bat_v.elp_interval) - BATADV_JITTER; - msecs += prandom_u32() % (2 * BATADV_JITTER); + msecs += prandom_u32_max(2 * BATADV_JITTER); queue_delayed_work(batadv_event_workqueue, &hard_iface->bat_v.elp_wq, msecs_to_jiffies(msecs)); @@ -60,7 +62,7 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface) * @neigh: the neighbour for which the throughput has to be obtained * * Return: The throughput towards the given neighbour in multiples of 100kpbs - * (a value of '1' equals to 0.1Mbps, '10' equals 1Mbps, etc). + * (a value of '1' equals 0.1Mbps, '10' equals 1Mbps, etc). */ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) { @@ -123,24 +125,10 @@ static u32 batadv_v_elp_get_throughput(struct batadv_hardif_neigh_node *neigh) /* if not a wifi interface, check if this device provides data via * ethtool (e.g. an Ethernet adapter) */ - memset(&link_settings, 0, sizeof(link_settings)); rtnl_lock(); ret = __ethtool_get_link_ksettings(hard_iface->net_dev, &link_settings); rtnl_unlock(); - - /* Virtual interface drivers such as tun / tap interfaces, VLAN, etc - * tend to initialize the interface throughput with some value for the - * sake of having a throughput number to export via ethtool. This - * exported throughput leaves batman-adv to conclude the interface - * throughput is genuine (reflecting reality), thus no measurements - * are necessary. - * - * Based on the observation that those interface types also tend to set - * the link auto-negotiation to 'off', batman-adv shall check this - * setting to differentiate between genuine link throughput information - * and placeholders installed by virtual interfaces. - */ - if (ret == 0 && link_settings.base.autoneg == AUTONEG_ENABLE) { + if (ret == 0) { /* link characteristics might change over time */ if (link_settings.base.duplex == DUPLEX_FULL) hard_iface->bat_v.flags |= BATADV_FULL_DUPLEX; @@ -196,8 +184,8 @@ void batadv_v_elp_throughput_metric_update(struct work_struct *work) * * Sends a predefined number of unicast wifi packets to a given neighbour in * order to trigger the throughput estimation on this link by the RC algorithm. - * Packets are sent only if there there is not enough payload unicast traffic - * towards this neighbour.. + * Packets are sent only if there is not enough payload unicast traffic towards + * this neighbour.. * * Return: True on success and false in case of error during skb preparation. */ @@ -257,7 +245,7 @@ batadv_v_elp_wifi_neigh_probe(struct batadv_hardif_neigh_node *neigh) * batadv_v_elp_periodic_work() - ELP periodic task per interface * @work: work queue item * - * Emits broadcast ELP message in regular intervals. + * Emits broadcast ELP messages in regular intervals. */ static void batadv_v_elp_periodic_work(struct work_struct *work) { @@ -497,14 +485,11 @@ static void batadv_v_elp_neigh_update(struct batadv_priv *bat_priv, hardif_neigh->bat_v.elp_interval = ntohl(elp_packet->elp_interval); hardif_free: - if (hardif_neigh) - batadv_hardif_neigh_put(hardif_neigh); + batadv_hardif_neigh_put(hardif_neigh); neigh_free: - if (neigh) - batadv_neigh_node_put(neigh); + batadv_neigh_node_put(neigh); orig_free: - if (orig_neigh) - batadv_orig_node_put(orig_neigh); + batadv_orig_node_put(orig_neigh); } /** @@ -512,7 +497,7 @@ orig_free: * @skb: the received packet * @if_incoming: the interface this packet was received through * - * Return: NET_RX_SUCCESS and consumes the skb if the packet was peoperly + * Return: NET_RX_SUCCESS and consumes the skb if the packet was properly * processed or NET_RX_DROP in case of failure. */ int batadv_v_elp_packet_recv(struct sk_buff *skb, diff --git a/net/batman-adv/bat_v_elp.h b/net/batman-adv/bat_v_elp.h index 4358d436be2a..9e2740195fa2 100644 --- a/net/batman-adv/bat_v_elp.h +++ b/net/batman-adv/bat_v_elp.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2013-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Linus Lüssing, Marek Lindner */ diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c index 969466218999..033639df96d8 100644 --- a/net/batman-adv/bat_v_ogm.c +++ b/net/batman-adv/bat_v_ogm.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2013-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Antonio Quartulli */ @@ -9,17 +9,19 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> +#include <linux/minmax.h> #include <linux/mutex.h> #include <linux/netdevice.h> +#include <linux/prandom.h> #include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> @@ -47,9 +49,9 @@ * @bat_priv: the bat priv with all the soft interface information * @addr: the address of the originator * - * Return: the orig_node corresponding to the specified address. If such object - * does not exist it is allocated here. In case of allocation failure returns - * NULL. + * Return: the orig_node corresponding to the specified address. If such an + * object does not exist, it is allocated here. In case of allocation failure + * returns NULL. */ struct batadv_orig_node *batadv_v_ogm_orig_get(struct batadv_priv *bat_priv, const u8 *addr) @@ -88,7 +90,7 @@ static void batadv_v_ogm_start_queue_timer(struct batadv_hard_iface *hard_iface) unsigned int msecs = BATADV_MAX_AGGREGATION_MS * 1000; /* msecs * [0.9, 1.1] */ - msecs += prandom_u32() % (msecs / 5) - (msecs / 10); + msecs += prandom_u32_max(msecs / 5) - (msecs / 10); queue_delayed_work(batadv_event_workqueue, &hard_iface->bat_v.aggr_wq, msecs_to_jiffies(msecs / 1000)); } @@ -107,7 +109,7 @@ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv) return; msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER; - msecs += prandom_u32() % (2 * BATADV_JITTER); + msecs += prandom_u32_max(2 * BATADV_JITTER); queue_delayed_work(batadv_event_workqueue, &bat_priv->bat_v.ogm_wq, msecs_to_jiffies(msecs)); } @@ -172,7 +174,7 @@ static bool batadv_v_ogm_queue_left(struct sk_buff *skb, * batadv_v_ogm_aggr_list_free - free all elements in an aggregation queue * @hard_iface: the interface holding the aggregation queue * - * Empties the OGMv2 aggregation queue and frees all the skbs it contained. + * Empties the OGMv2 aggregation queue and frees all the skbs it contains. * * Caller needs to hold the hard_iface->bat_v.aggr_list.lock. */ @@ -378,7 +380,7 @@ static void batadv_v_ogm_send(struct work_struct *work) * batadv_v_ogm_aggr_work() - OGM queue periodic task per interface * @work: work queue item * - * Emits aggregated OGM message in regular intervals. + * Emits aggregated OGM messages in regular intervals. */ void batadv_v_ogm_aggr_work(struct work_struct *work) { @@ -399,7 +401,7 @@ void batadv_v_ogm_aggr_work(struct work_struct *work) * batadv_v_ogm_iface_enable() - prepare an interface for B.A.T.M.A.N. V * @hard_iface: the interface to prepare * - * Takes care of scheduling own OGM sending routine for this interface. + * Takes care of scheduling its own OGM sending routine for this interface. * * Return: 0 on success or a negative error code otherwise */ @@ -455,15 +457,17 @@ unlock: * @throughput: the current throughput * * Apply a penalty on the current throughput metric value based on the - * characteristic of the interface where the OGM has been received. The return - * value is computed as follows: + * characteristic of the interface where the OGM has been received. + * + * Initially the per hardif hop penalty is applied to the throughput. After + * that the return value is then computed as follows: * - throughput * 50% if the incoming and outgoing interface are the * same WiFi interface and the throughput is above * 1MBit/s * - throughput if the outgoing interface is the default * interface (i.e. this OGM is processed for the * internal table and not forwarded) - * - throughput * hop penalty otherwise + * - throughput * node hop penalty otherwise * * Return: the penalised throughput metric. */ @@ -472,9 +476,14 @@ static u32 batadv_v_forward_penalty(struct batadv_priv *bat_priv, struct batadv_hard_iface *if_outgoing, u32 throughput) { + int if_hop_penalty = atomic_read(&if_incoming->hop_penalty); int hop_penalty = atomic_read(&bat_priv->hop_penalty); int hop_penalty_max = BATADV_TQ_MAX_VALUE; + /* Apply per hardif hop penalty */ + throughput = throughput * (hop_penalty_max - if_hop_penalty) / + hop_penalty_max; + /* Don't apply hop penalty in default originator table. */ if (if_outgoing == BATADV_IF_DEFAULT) return throughput; @@ -575,12 +584,9 @@ static void batadv_v_ogm_forward(struct batadv_priv *bat_priv, batadv_v_ogm_queue_on_if(skb, if_outgoing); out: - if (orig_ifinfo) - batadv_orig_ifinfo_put(orig_ifinfo); - if (router) - batadv_neigh_node_put(router); - if (neigh_ifinfo) - batadv_neigh_ifinfo_put(neigh_ifinfo); + batadv_orig_ifinfo_put(orig_ifinfo); + batadv_neigh_node_put(router); + batadv_neigh_ifinfo_put(neigh_ifinfo); } /** @@ -660,10 +666,8 @@ static int batadv_v_ogm_metric_update(struct batadv_priv *bat_priv, else ret = 0; out: - if (orig_ifinfo) - batadv_orig_ifinfo_put(orig_ifinfo); - if (neigh_ifinfo) - batadv_neigh_ifinfo_put(neigh_ifinfo); + batadv_orig_ifinfo_put(orig_ifinfo); + batadv_neigh_ifinfo_put(neigh_ifinfo); return ret; } @@ -754,16 +758,11 @@ static bool batadv_v_ogm_route_update(struct batadv_priv *bat_priv, batadv_update_route(bat_priv, orig_node, if_outgoing, neigh_node); out: - if (router) - batadv_neigh_node_put(router); - if (orig_neigh_router) - batadv_neigh_node_put(orig_neigh_router); - if (orig_neigh_node) - batadv_orig_node_put(orig_neigh_node); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); - if (neigh_ifinfo) - batadv_neigh_ifinfo_put(neigh_ifinfo); + batadv_neigh_node_put(router); + batadv_neigh_node_put(orig_neigh_router); + batadv_orig_node_put(orig_neigh_node); + batadv_neigh_ifinfo_put(router_ifinfo); + batadv_neigh_ifinfo_put(neigh_ifinfo); return forward; } @@ -847,7 +846,7 @@ batadv_v_ogm_aggr_packet(int buff_pos, int packet_len, * batadv_v_ogm_process() - process an incoming batman v OGM * @skb: the skb containing the OGM * @ogm_offset: offset to the OGM which should be processed (for aggregates) - * @if_incoming: the interface where this packet was receved + * @if_incoming: the interface where this packet was received */ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, struct batadv_hard_iface *if_incoming) @@ -874,6 +873,12 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, ntohl(ogm_packet->seqno), ogm_throughput, ogm_packet->ttl, ogm_packet->version, ntohs(ogm_packet->tvlv_len)); + if (batadv_is_my_mac(bat_priv, ogm_packet->orig)) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Drop packet: originator packet from ourself\n"); + return; + } + /* If the throughput metric is 0, immediately drop the packet. No need * to create orig_node / neigh_node for an unusable route. */ @@ -893,7 +898,7 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, orig_node = batadv_v_ogm_orig_get(bat_priv, ogm_packet->orig); if (!orig_node) - return; + goto out; neigh_node = batadv_neigh_node_get_or_create(orig_node, if_incoming, ethhdr->h_source); @@ -963,12 +968,9 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, } rcu_read_unlock(); out: - if (orig_node) - batadv_orig_node_put(orig_node); - if (neigh_node) - batadv_neigh_node_put(neigh_node); - if (hardif_neigh) - batadv_hardif_neigh_put(hardif_neigh); + batadv_orig_node_put(orig_node); + batadv_neigh_node_put(neigh_node); + batadv_hardif_neigh_put(hardif_neigh); } /** @@ -1001,11 +1003,6 @@ int batadv_v_ogm_packet_recv(struct sk_buff *skb, if (batadv_is_my_mac(bat_priv, ethhdr->h_source)) goto free_skb; - ogm_packet = (struct batadv_ogm2_packet *)skb->data; - - if (batadv_is_my_mac(bat_priv, ogm_packet->orig)) - goto free_skb; - batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_RX); batadv_add_counter(bat_priv, BATADV_CNT_MGMT_RX_BYTES, skb->len + ETH_HLEN); diff --git a/net/batman-adv/bat_v_ogm.h b/net/batman-adv/bat_v_ogm.h index 0ae2575f70bb..edeffedecade 100644 --- a/net/batman-adv/bat_v_ogm.h +++ b/net/batman-adv/bat_v_ogm.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2013-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Antonio Quartulli */ diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c index 4bc695cda397..649c41f393e1 100644 --- a/net/batman-adv/bitarray.c +++ b/net/batman-adv/bitarray.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2006-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner */ diff --git a/net/batman-adv/bitarray.h b/net/batman-adv/bitarray.h index 533c6d44cb58..37f7ae413bc6 100644 --- a/net/batman-adv/bitarray.h +++ b/net/batman-adv/bitarray.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2006-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner */ diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 41cc87f06b14..37ce6cfb3520 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Simon Wunderlich */ @@ -10,6 +10,7 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> #include <linux/compiler.h> +#include <linux/container_of.h> #include <linux/crc16.h> #include <linux/errno.h> #include <linux/etherdevice.h> @@ -27,7 +28,6 @@ #include <linux/netlink.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -65,7 +65,7 @@ batadv_bla_send_announce(struct batadv_priv *bat_priv, */ static inline u32 batadv_choose_claim(const void *data, u32 size) { - struct batadv_bla_claim *claim = (struct batadv_bla_claim *)data; + const struct batadv_bla_claim *claim = data; u32 hash = 0; hash = jhash(&claim->addr, sizeof(claim->addr), hash); @@ -83,11 +83,12 @@ static inline u32 batadv_choose_claim(const void *data, u32 size) */ static inline u32 batadv_choose_backbone_gw(const void *data, u32 size) { - const struct batadv_bla_claim *claim = (struct batadv_bla_claim *)data; + const struct batadv_bla_backbone_gw *gw; u32 hash = 0; - hash = jhash(&claim->addr, sizeof(claim->addr), hash); - hash = jhash(&claim->vid, sizeof(claim->vid), hash); + gw = data; + hash = jhash(&gw->orig, sizeof(gw->orig), hash); + hash = jhash(&gw->vid, sizeof(gw->vid), hash); return hash % size; } @@ -162,6 +163,9 @@ static void batadv_backbone_gw_release(struct kref *ref) */ static void batadv_backbone_gw_put(struct batadv_bla_backbone_gw *backbone_gw) { + if (!backbone_gw) + return; + kref_put(&backbone_gw->refcount, batadv_backbone_gw_release); } @@ -197,6 +201,9 @@ static void batadv_claim_release(struct kref *ref) */ static void batadv_claim_put(struct batadv_bla_claim *claim) { + if (!claim) + return; + kref_put(&claim->refcount, batadv_claim_release); } @@ -248,7 +255,7 @@ batadv_claim_hash_find(struct batadv_priv *bat_priv, * Return: backbone gateway if found or NULL otherwise */ static struct batadv_bla_backbone_gw * -batadv_backbone_hash_find(struct batadv_priv *bat_priv, u8 *addr, +batadv_backbone_hash_find(struct batadv_priv *bat_priv, const u8 *addr, unsigned short vid) { struct batadv_hashtable *hash = bat_priv->bla.backbone_hash; @@ -330,7 +337,7 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw) * @vid: the VLAN ID * @claimtype: the type of the claim (CLAIM, UNCLAIM, ANNOUNCE, ...) */ -static void batadv_bla_send_claim(struct batadv_priv *bat_priv, u8 *mac, +static void batadv_bla_send_claim(struct batadv_priv *bat_priv, const u8 *mac, unsigned short vid, int claimtype) { struct sk_buff *skb; @@ -395,7 +402,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, u8 *mac, break; case BATADV_CLAIM_TYPE_ANNOUNCE: /* announcement frame - * set HW SRC to the special mac containg the crc + * set HW SRC to the special mac containing the crc */ ether_addr_copy(hw_src, mac); batadv_dbg(BATADV_DBG_BLA, bat_priv, @@ -439,8 +446,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, u8 *mac, netif_rx(skb); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } /** @@ -483,7 +489,7 @@ static void batadv_bla_loopdetect_report(struct work_struct *work) * Return: the (possibly created) backbone gateway or NULL on error */ static struct batadv_bla_backbone_gw * -batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, u8 *orig, +batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, const u8 *orig, unsigned short vid, bool own_backbone) { struct batadv_bla_backbone_gw *entry; @@ -921,7 +927,7 @@ static bool batadv_handle_request(struct batadv_priv *bat_priv, */ static bool batadv_handle_unclaim(struct batadv_priv *bat_priv, struct batadv_hard_iface *primary_if, - u8 *backbone_addr, u8 *claim_addr, + const u8 *backbone_addr, const u8 *claim_addr, unsigned short vid) { struct batadv_bla_backbone_gw *backbone_gw; @@ -959,7 +965,7 @@ static bool batadv_handle_unclaim(struct batadv_priv *bat_priv, */ static bool batadv_handle_claim(struct batadv_priv *bat_priv, struct batadv_hard_iface *primary_if, - u8 *backbone_addr, u8 *claim_addr, + const u8 *backbone_addr, const u8 *claim_addr, unsigned short vid) { struct batadv_bla_backbone_gw *backbone_gw; @@ -992,7 +998,7 @@ static bool batadv_handle_claim(struct batadv_priv *bat_priv, * @hw_dst: the Hardware destination in the ARP Header * @ethhdr: pointer to the Ethernet header of the claim frame * - * checks if it is a claim packet and if its on the same group. + * checks if it is a claim packet and if it's on the same group. * This function also applies the group ID of the sender * if it is in the same mesh. * @@ -1040,7 +1046,7 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv, /* lets see if this originator is in our mesh */ orig_node = batadv_orig_hash_find(bat_priv, backbone_addr); - /* dont accept claims from gateways which are not in + /* don't accept claims from gateways which are not in * the same mesh or group. */ if (!orig_node) @@ -1498,8 +1504,7 @@ static void batadv_bla_periodic_work(struct work_struct *work) rcu_read_unlock(); } out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); queue_delayed_work(batadv_event_workqueue, &bat_priv->bla.work, msecs_to_jiffies(BATADV_BLA_PERIOD_LENGTH)); @@ -1556,10 +1561,14 @@ int batadv_bla_init(struct batadv_priv *bat_priv) return 0; bat_priv->bla.claim_hash = batadv_hash_new(128); - bat_priv->bla.backbone_hash = batadv_hash_new(32); + if (!bat_priv->bla.claim_hash) + return -ENOMEM; - if (!bat_priv->bla.claim_hash || !bat_priv->bla.backbone_hash) + bat_priv->bla.backbone_hash = batadv_hash_new(32); + if (!bat_priv->bla.backbone_hash) { + batadv_hash_destroy(bat_priv->bla.claim_hash); return -ENOMEM; + } batadv_hash_set_lock_class(bat_priv->bla.claim_hash, &batadv_claim_hash_lock_class_key); @@ -1576,13 +1585,16 @@ int batadv_bla_init(struct batadv_priv *bat_priv) } /** - * batadv_bla_check_bcast_duplist() - Check if a frame is in the broadcast dup. + * batadv_bla_check_duplist() - Check if a frame is in the broadcast dup. * @bat_priv: the bat priv with all the soft interface information - * @skb: contains the bcast_packet to be checked + * @skb: contains the multicast packet to be checked + * @payload_ptr: pointer to position inside the head buffer of the skb + * marking the start of the data to be CRC'ed + * @orig: originator mac address, NULL if unknown * - * check if it is on our broadcast list. Another gateway might - * have sent the same packet because it is connected to the same backbone, - * so we have to remove this duplicate. + * Check if it is on our broadcast list. Another gateway might have sent the + * same packet because it is connected to the same backbone, so we have to + * remove this duplicate. * * This is performed by checking the CRC, which will tell us * with a good chance that it is the same packet. If it is furthermore @@ -1591,19 +1603,17 @@ int batadv_bla_init(struct batadv_priv *bat_priv) * * Return: true if a packet is in the duplicate list, false otherwise. */ -bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, - struct sk_buff *skb) +static bool batadv_bla_check_duplist(struct batadv_priv *bat_priv, + struct sk_buff *skb, u8 *payload_ptr, + const u8 *orig) { - int i, curr; - __be32 crc; - struct batadv_bcast_packet *bcast_packet; struct batadv_bcast_duplist_entry *entry; bool ret = false; - - bcast_packet = (struct batadv_bcast_packet *)skb->data; + int i, curr; + __be32 crc; /* calculate the crc ... */ - crc = batadv_skb_crc32(skb, (u8 *)(bcast_packet + 1)); + crc = batadv_skb_crc32(skb, payload_ptr); spin_lock_bh(&bat_priv->bla.bcast_duplist_lock); @@ -1622,8 +1632,21 @@ bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, if (entry->crc != crc) continue; - if (batadv_compare_eth(entry->orig, bcast_packet->orig)) - continue; + /* are the originators both known and not anonymous? */ + if (orig && !is_zero_ether_addr(orig) && + !is_zero_ether_addr(entry->orig)) { + /* If known, check if the new frame came from + * the same originator: + * We are safe to take identical frames from the + * same orig, if known, as multiplications in + * the mesh are detected via the (orig, seqno) pair. + * So we can be a bit more liberal here and allow + * identical frames from the same orig which the source + * host might have sent multiple times on purpose. + */ + if (batadv_compare_eth(entry->orig, orig)) + continue; + } /* this entry seems to match: same crc, not too old, * and from another gw. therefore return true to forbid it. @@ -1639,7 +1662,14 @@ bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, entry = &bat_priv->bla.bcast_duplist[curr]; entry->crc = crc; entry->entrytime = jiffies; - ether_addr_copy(entry->orig, bcast_packet->orig); + + /* known originator */ + if (orig) + ether_addr_copy(entry->orig, orig); + /* anonymous originator */ + else + eth_zero_addr(entry->orig); + bat_priv->bla.bcast_duplist_curr = curr; out: @@ -1649,6 +1679,48 @@ out: } /** + * batadv_bla_check_ucast_duplist() - Check if a frame is in the broadcast dup. + * @bat_priv: the bat priv with all the soft interface information + * @skb: contains the multicast packet to be checked, decapsulated from a + * unicast_packet + * + * Check if it is on our broadcast list. Another gateway might have sent the + * same packet because it is connected to the same backbone, so we have to + * remove this duplicate. + * + * Return: true if a packet is in the duplicate list, false otherwise. + */ +static bool batadv_bla_check_ucast_duplist(struct batadv_priv *bat_priv, + struct sk_buff *skb) +{ + return batadv_bla_check_duplist(bat_priv, skb, (u8 *)skb->data, NULL); +} + +/** + * batadv_bla_check_bcast_duplist() - Check if a frame is in the broadcast dup. + * @bat_priv: the bat priv with all the soft interface information + * @skb: contains the bcast_packet to be checked + * + * Check if it is on our broadcast list. Another gateway might have sent the + * same packet because it is connected to the same backbone, so we have to + * remove this duplicate. + * + * Return: true if a packet is in the duplicate list, false otherwise. + */ +bool batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv, + struct sk_buff *skb) +{ + struct batadv_bcast_packet *bcast_packet; + u8 *payload_ptr; + + bcast_packet = (struct batadv_bcast_packet *)skb->data; + payload_ptr = (u8 *)(bcast_packet + 1); + + return batadv_bla_check_duplist(bat_priv, skb, payload_ptr, + bcast_packet->orig); +} + +/** * batadv_bla_is_backbone_gw_orig() - Check if the originator is a gateway for * the VLAN identified by vid. * @bat_priv: the bat priv with all the soft interface information @@ -1745,8 +1817,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv) batadv_hash_destroy(bat_priv->bla.backbone_hash); bat_priv->bla.backbone_hash = NULL; } - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } /** @@ -1757,7 +1828,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv) * @vid: the VLAN ID of the frame * * Checks if this packet is a loop detect frame which has been sent by us, - * throw an uevent and log the event if that is the case. + * throws an uevent and logs the event if that is the case. * * Return: true if it is a loop detect frame which is to be dropped, false * otherwise. @@ -1795,7 +1866,7 @@ batadv_bla_loopdetect_check(struct batadv_priv *bat_priv, struct sk_buff *skb, ret = queue_work(batadv_event_workqueue, &backbone_gw->report_work); - /* backbone_gw is unreferenced in the report work function function + /* backbone_gw is unreferenced in the report work function * if queue_work() call was successful */ if (!ret) @@ -1809,19 +1880,19 @@ batadv_bla_loopdetect_check(struct batadv_priv *bat_priv, struct sk_buff *skb, * @bat_priv: the bat priv with all the soft interface information * @skb: the frame to be checked * @vid: the VLAN ID of the frame - * @is_bcast: the packet came in a broadcast packet type. + * @packet_type: the batman packet type this frame came in * * batadv_bla_rx avoidance checks if: * * we have to race for a claim * * if the frame is allowed on the LAN * - * in these cases, the skb is further handled by this function + * In these cases, the skb is further handled by this function * * Return: true if handled, otherwise it returns false and the caller shall * further process the skb. */ bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, - unsigned short vid, bool is_bcast) + unsigned short vid, int packet_type) { struct batadv_bla_backbone_gw *backbone_gw; struct ethhdr *ethhdr; @@ -1843,9 +1914,32 @@ bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, goto handled; if (unlikely(atomic_read(&bat_priv->bla.num_requests))) - /* don't allow broadcasts while requests are in flight */ - if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast) - goto handled; + /* don't allow multicast packets while requests are in flight */ + if (is_multicast_ether_addr(ethhdr->h_dest)) + /* Both broadcast flooding or multicast-via-unicasts + * delivery might send to multiple backbone gateways + * sharing the same LAN and therefore need to coordinate + * which backbone gateway forwards into the LAN, + * by claiming the payload source address. + * + * Broadcast flooding and multicast-via-unicasts + * delivery use the following two batman packet types. + * Note: explicitly exclude BATADV_UNICAST_4ADDR, + * as the DHCP gateway feature will send explicitly + * to only one BLA gateway, so the claiming process + * should be avoided there. + */ + if (packet_type == BATADV_BCAST || + packet_type == BATADV_UNICAST) + goto handled; + + /* potential duplicates from foreign BLA backbone gateways via + * multicast-in-unicast packets + */ + if (is_multicast_ether_addr(ethhdr->h_dest) && + packet_type == BATADV_UNICAST && + batadv_bla_check_ucast_duplist(bat_priv, skb)) + goto handled; ether_addr_copy(search_claim.addr, ethhdr->h_source); search_claim.vid = vid; @@ -1880,13 +1974,14 @@ bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, goto allow; } - /* if it is a broadcast ... */ - if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast) { + /* if it is a multicast ... */ + if (is_multicast_ether_addr(ethhdr->h_dest) && + (packet_type == BATADV_BCAST || packet_type == BATADV_UNICAST)) { /* ... drop it. the responsible gateway is in charge. * - * We need to check is_bcast because with the gateway + * We need to check packet type because with the gateway * feature, broadcasts (like DHCP requests) may be sent - * using a unicast packet type. + * using a unicast 4 address packet type. See comment above. */ goto handled; } else { @@ -1909,10 +2004,8 @@ handled: ret = true; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (claim) - batadv_claim_put(claim); + batadv_hardif_put(primary_if); + batadv_claim_put(claim); return ret; } @@ -2016,76 +2109,11 @@ allow: handled: ret = true; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (claim) - batadv_claim_put(claim); + batadv_hardif_put(primary_if); + batadv_claim_put(claim); return ret; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_bla_claim_table_seq_print_text() - print the claim table in a seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->bla.claim_hash; - struct batadv_bla_backbone_gw *backbone_gw; - struct batadv_bla_claim *claim; - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - u16 backbone_crc; - u32 i; - bool is_own; - u8 *primary_addr; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - goto out; - - primary_addr = primary_if->net_dev->dev_addr; - seq_printf(seq, - "Claims announced for the mesh %s (orig %pM, group id %#.4x)\n", - net_dev->name, primary_addr, - ntohs(bat_priv->bla.claim_dest.group)); - seq_puts(seq, - " Client VID Originator [o] (CRC )\n"); - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(claim, head, hash_entry) { - backbone_gw = batadv_bla_claim_get_backbone_gw(claim); - - is_own = batadv_compare_eth(backbone_gw->orig, - primary_addr); - - spin_lock_bh(&backbone_gw->crc_lock); - backbone_crc = backbone_gw->crc; - spin_unlock_bh(&backbone_gw->crc_lock); - seq_printf(seq, " * %pM on %5d by %pM [%c] (%#.4x)\n", - claim->addr, batadv_print_vid(claim->vid), - backbone_gw->orig, - (is_own ? 'x' : ' '), - backbone_crc); - - batadv_backbone_gw_put(backbone_gw); - } - rcu_read_unlock(); - } -out: - if (primary_if) - batadv_hardif_put(primary_if); - return 0; -} -#endif - /** * batadv_bla_claim_dump_entry() - dump one entry of the claim table * to a netlink socket @@ -2103,7 +2131,7 @@ batadv_bla_claim_dump_entry(struct sk_buff *msg, u32 portid, struct batadv_hard_iface *primary_if, struct batadv_bla_claim *claim) { - u8 *primary_addr = primary_if->net_dev->dev_addr; + const u8 *primary_addr = primary_if->net_dev->dev_addr; u16 backbone_crc; bool is_own; void *hdr; @@ -2247,81 +2275,13 @@ int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + dev_put(soft_iface); return ret; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_bla_backbone_table_seq_print_text() - print the backbone table in a - * seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->bla.backbone_hash; - struct batadv_bla_backbone_gw *backbone_gw; - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - int secs, msecs; - u16 backbone_crc; - u32 i; - bool is_own; - u8 *primary_addr; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - goto out; - - primary_addr = primary_if->net_dev->dev_addr; - seq_printf(seq, - "Backbones announced for the mesh %s (orig %pM, group id %#.4x)\n", - net_dev->name, primary_addr, - ntohs(bat_priv->bla.claim_dest.group)); - seq_puts(seq, " Originator VID last seen (CRC )\n"); - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(backbone_gw, head, hash_entry) { - msecs = jiffies_to_msecs(jiffies - - backbone_gw->lasttime); - secs = msecs / 1000; - msecs = msecs % 1000; - - is_own = batadv_compare_eth(backbone_gw->orig, - primary_addr); - if (is_own) - continue; - - spin_lock_bh(&backbone_gw->crc_lock); - backbone_crc = backbone_gw->crc; - spin_unlock_bh(&backbone_gw->crc_lock); - - seq_printf(seq, " * %pM on %5d %4i.%03is (%#.4x)\n", - backbone_gw->orig, - batadv_print_vid(backbone_gw->vid), secs, - msecs, backbone_crc); - } - rcu_read_unlock(); - } -out: - if (primary_if) - batadv_hardif_put(primary_if); - return 0; -} -#endif - /** * batadv_bla_backbone_dump_entry() - dump one entry of the backbone table to a * netlink socket @@ -2339,7 +2299,7 @@ batadv_bla_backbone_dump_entry(struct sk_buff *msg, u32 portid, struct batadv_hard_iface *primary_if, struct batadv_bla_backbone_gw *backbone_gw) { - u8 *primary_addr = primary_if->net_dev->dev_addr; + const u8 *primary_addr = primary_if->net_dev->dev_addr; u16 backbone_crc; bool is_own; int msecs; @@ -2485,11 +2445,9 @@ int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + dev_put(soft_iface); return ret; } diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h index 41edb2c4a327..8673a265995f 100644 --- a/net/batman-adv/bridge_loop_avoidance.h +++ b/net/batman-adv/bridge_loop_avoidance.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Simon Wunderlich */ @@ -12,7 +12,6 @@ #include <linux/compiler.h> #include <linux/netdevice.h> #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/stddef.h> #include <linux/types.h> @@ -35,16 +34,13 @@ static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac) #ifdef CONFIG_BATMAN_ADV_BLA bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, - unsigned short vid, bool is_bcast); + unsigned short vid, int packet_type); bool batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid); bool batadv_bla_is_backbone_gw(struct sk_buff *skb, struct batadv_orig_node *orig_node, int hdr_size); -int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset); int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb); -int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, - void *offset); int batadv_bla_backbone_dump(struct sk_buff *msg, struct netlink_callback *cb); bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig, unsigned short vid); @@ -56,7 +52,6 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv, void batadv_bla_status_update(struct net_device *net_dev); int batadv_bla_init(struct batadv_priv *bat_priv); void batadv_bla_free(struct batadv_priv *bat_priv); -int batadv_bla_claim_dump(struct sk_buff *msg, struct netlink_callback *cb); #ifdef CONFIG_BATMAN_ADV_DAT bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, unsigned short vid); @@ -66,7 +61,7 @@ bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, static inline bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid, - bool is_bcast) + int packet_type) { return false; } @@ -84,18 +79,6 @@ static inline bool batadv_bla_is_backbone_gw(struct sk_buff *skb, return false; } -static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, - void *offset) -{ - return 0; -} - -static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, - void *offset) -{ - return 0; -} - static inline bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig, unsigned short vid) { diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c deleted file mode 100644 index 452856c27d20..000000000000 --- a/net/batman-adv/debugfs.c +++ /dev/null @@ -1,442 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#include "debugfs.h" -#include "main.h" - -#include <asm/current.h> -#include <linux/dcache.h> -#include <linux/debugfs.h> -#include <linux/errno.h> -#include <linux/export.h> -#include <linux/fs.h> -#include <linux/netdevice.h> -#include <linux/printk.h> -#include <linux/sched.h> -#include <linux/seq_file.h> -#include <linux/stat.h> -#include <linux/stddef.h> -#include <linux/stringify.h> -#include <linux/sysfs.h> -#include <net/net_namespace.h> - -#include "bat_algo.h" -#include "bridge_loop_avoidance.h" -#include "distributed-arp-table.h" -#include "gateway_client.h" -#include "icmp_socket.h" -#include "log.h" -#include "multicast.h" -#include "network-coding.h" -#include "originator.h" -#include "translation-table.h" - -static struct dentry *batadv_debugfs; - -/** - * batadv_debugfs_deprecated() - Log use of deprecated batadv debugfs access - * @file: file which was accessed - * @alt: explanation what can be used as alternative - */ -void batadv_debugfs_deprecated(struct file *file, const char *alt) -{ - struct dentry *dentry = file_dentry(file); - const char *name = dentry->d_name.name; - - pr_warn_ratelimited(DEPRECATED "%s (pid %d) Use of debugfs file \"%s\".\n%s", - current->comm, task_pid_nr(current), name, alt); -} - -static int batadv_algorithms_open(struct inode *inode, struct file *file) -{ - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_ROUTING_ALGOS instead\n"); - return single_open(file, batadv_algo_seq_print_text, NULL); -} - -static int neighbors_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_NEIGHBORS instead\n"); - return single_open(file, batadv_hardif_neigh_seq_print_text, net_dev); -} - -static int batadv_originators_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_ORIGINATORS instead\n"); - return single_open(file, batadv_orig_seq_print_text, net_dev); -} - -/** - * batadv_originators_hardif_open() - handles debugfs output for the originator - * table of an hard interface - * @inode: inode pointer to debugfs file - * @file: pointer to the seq_file - * - * Return: 0 on success or negative error number in case of failure - */ -static int batadv_originators_hardif_open(struct inode *inode, - struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_HARDIFS instead\n"); - return single_open(file, batadv_orig_hardif_seq_print_text, net_dev); -} - -static int batadv_gateways_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_GATEWAYS instead\n"); - return single_open(file, batadv_gw_client_seq_print_text, net_dev); -} - -static int batadv_transtable_global_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_TRANSTABLE_GLOBAL instead\n"); - return single_open(file, batadv_tt_global_seq_print_text, net_dev); -} - -#ifdef CONFIG_BATMAN_ADV_BLA -static int batadv_bla_claim_table_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_BLA_CLAIM instead\n"); - return single_open(file, batadv_bla_claim_table_seq_print_text, - net_dev); -} - -static int batadv_bla_backbone_table_open(struct inode *inode, - struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_BLA_BACKBONE instead\n"); - return single_open(file, batadv_bla_backbone_table_seq_print_text, - net_dev); -} - -#endif - -#ifdef CONFIG_BATMAN_ADV_DAT -/** - * batadv_dat_cache_open() - Prepare file handler for reads from dat_cache - * @inode: inode which was opened - * @file: file handle to be initialized - * - * Return: 0 on success or negative error number in case of failure - */ -static int batadv_dat_cache_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_DAT_CACHE instead\n"); - return single_open(file, batadv_dat_cache_seq_print_text, net_dev); -} -#endif - -static int batadv_transtable_local_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_TRANSTABLE_LOCAL instead\n"); - return single_open(file, batadv_tt_local_seq_print_text, net_dev); -} - -struct batadv_debuginfo { - struct attribute attr; - const struct file_operations fops; -}; - -#ifdef CONFIG_BATMAN_ADV_NC -static int batadv_nc_nodes_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, ""); - return single_open(file, batadv_nc_nodes_seq_print_text, net_dev); -} -#endif - -#ifdef CONFIG_BATMAN_ADV_MCAST -/** - * batadv_mcast_flags_open() - prepare file handler for reads from mcast_flags - * @inode: inode which was opened - * @file: file handle to be initialized - * - * Return: 0 on success or negative error number in case of failure - */ -static int batadv_mcast_flags_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - - batadv_debugfs_deprecated(file, - "Use genl command BATADV_CMD_GET_MCAST_FLAGS instead\n"); - return single_open(file, batadv_mcast_flags_seq_print_text, net_dev); -} -#endif - -#define BATADV_DEBUGINFO(_name, _mode, _open) \ -struct batadv_debuginfo batadv_debuginfo_##_name = { \ - .attr = { \ - .name = __stringify(_name), \ - .mode = _mode, \ - }, \ - .fops = { \ - .owner = THIS_MODULE, \ - .open = _open, \ - .read = seq_read, \ - .llseek = seq_lseek, \ - .release = single_release, \ - }, \ -} - -/* the following attributes are general and therefore they will be directly - * placed in the BATADV_DEBUGFS_SUBDIR subdirectory of debugfs - */ -static BATADV_DEBUGINFO(routing_algos, 0444, batadv_algorithms_open); - -static struct batadv_debuginfo *batadv_general_debuginfos[] = { - &batadv_debuginfo_routing_algos, - NULL, -}; - -/* The following attributes are per soft interface */ -static BATADV_DEBUGINFO(neighbors, 0444, neighbors_open); -static BATADV_DEBUGINFO(originators, 0444, batadv_originators_open); -static BATADV_DEBUGINFO(gateways, 0444, batadv_gateways_open); -static BATADV_DEBUGINFO(transtable_global, 0444, batadv_transtable_global_open); -#ifdef CONFIG_BATMAN_ADV_BLA -static BATADV_DEBUGINFO(bla_claim_table, 0444, batadv_bla_claim_table_open); -static BATADV_DEBUGINFO(bla_backbone_table, 0444, - batadv_bla_backbone_table_open); -#endif -#ifdef CONFIG_BATMAN_ADV_DAT -static BATADV_DEBUGINFO(dat_cache, 0444, batadv_dat_cache_open); -#endif -static BATADV_DEBUGINFO(transtable_local, 0444, batadv_transtable_local_open); -#ifdef CONFIG_BATMAN_ADV_NC -static BATADV_DEBUGINFO(nc_nodes, 0444, batadv_nc_nodes_open); -#endif -#ifdef CONFIG_BATMAN_ADV_MCAST -static BATADV_DEBUGINFO(mcast_flags, 0444, batadv_mcast_flags_open); -#endif - -static struct batadv_debuginfo *batadv_mesh_debuginfos[] = { - &batadv_debuginfo_neighbors, - &batadv_debuginfo_originators, - &batadv_debuginfo_gateways, - &batadv_debuginfo_transtable_global, -#ifdef CONFIG_BATMAN_ADV_BLA - &batadv_debuginfo_bla_claim_table, - &batadv_debuginfo_bla_backbone_table, -#endif -#ifdef CONFIG_BATMAN_ADV_DAT - &batadv_debuginfo_dat_cache, -#endif - &batadv_debuginfo_transtable_local, -#ifdef CONFIG_BATMAN_ADV_NC - &batadv_debuginfo_nc_nodes, -#endif -#ifdef CONFIG_BATMAN_ADV_MCAST - &batadv_debuginfo_mcast_flags, -#endif - NULL, -}; - -#define BATADV_HARDIF_DEBUGINFO(_name, _mode, _open) \ -struct batadv_debuginfo batadv_hardif_debuginfo_##_name = { \ - .attr = { \ - .name = __stringify(_name), \ - .mode = _mode, \ - }, \ - .fops = { \ - .owner = THIS_MODULE, \ - .open = _open, \ - .read = seq_read, \ - .llseek = seq_lseek, \ - .release = single_release, \ - }, \ -} - -static BATADV_HARDIF_DEBUGINFO(originators, 0444, - batadv_originators_hardif_open); - -static struct batadv_debuginfo *batadv_hardif_debuginfos[] = { - &batadv_hardif_debuginfo_originators, - NULL, -}; - -/** - * batadv_debugfs_init() - Initialize soft interface independent debugfs entries - */ -void batadv_debugfs_init(void) -{ - struct batadv_debuginfo **bat_debug; - - batadv_debugfs = debugfs_create_dir(BATADV_DEBUGFS_SUBDIR, NULL); - - for (bat_debug = batadv_general_debuginfos; *bat_debug; ++bat_debug) - debugfs_create_file(((*bat_debug)->attr).name, - S_IFREG | ((*bat_debug)->attr).mode, - batadv_debugfs, NULL, &(*bat_debug)->fops); -} - -/** - * batadv_debugfs_destroy() - Remove all debugfs entries - */ -void batadv_debugfs_destroy(void) -{ - debugfs_remove_recursive(batadv_debugfs); - batadv_debugfs = NULL; -} - -/** - * batadv_debugfs_add_hardif() - creates the base directory for a hard interface - * in debugfs. - * @hard_iface: hard interface which should be added. - */ -void batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface) -{ - struct net *net = dev_net(hard_iface->net_dev); - struct batadv_debuginfo **bat_debug; - - if (net != &init_net) - return; - - hard_iface->debug_dir = debugfs_create_dir(hard_iface->net_dev->name, - batadv_debugfs); - - for (bat_debug = batadv_hardif_debuginfos; *bat_debug; ++bat_debug) - debugfs_create_file(((*bat_debug)->attr).name, - S_IFREG | ((*bat_debug)->attr).mode, - hard_iface->debug_dir, hard_iface->net_dev, - &(*bat_debug)->fops); -} - -/** - * batadv_debugfs_rename_hardif() - Fix debugfs path for renamed hardif - * @hard_iface: hard interface which was renamed - */ -void batadv_debugfs_rename_hardif(struct batadv_hard_iface *hard_iface) -{ - const char *name = hard_iface->net_dev->name; - struct dentry *dir; - - dir = hard_iface->debug_dir; - if (!dir) - return; - - debugfs_rename(dir->d_parent, dir, dir->d_parent, name); -} - -/** - * batadv_debugfs_del_hardif() - delete the base directory for a hard interface - * in debugfs. - * @hard_iface: hard interface which is deleted. - */ -void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface) -{ - struct net *net = dev_net(hard_iface->net_dev); - - if (net != &init_net) - return; - - if (batadv_debugfs) { - debugfs_remove_recursive(hard_iface->debug_dir); - hard_iface->debug_dir = NULL; - } -} - -/** - * batadv_debugfs_add_meshif() - Initialize interface dependent debugfs entries - * @dev: netdev struct of the soft interface - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_debugfs_add_meshif(struct net_device *dev) -{ - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_debuginfo **bat_debug; - struct net *net = dev_net(dev); - - if (net != &init_net) - return 0; - - bat_priv->debug_dir = debugfs_create_dir(dev->name, batadv_debugfs); - - batadv_socket_setup(bat_priv); - - if (batadv_debug_log_setup(bat_priv) < 0) - goto rem_attr; - - for (bat_debug = batadv_mesh_debuginfos; *bat_debug; ++bat_debug) - debugfs_create_file(((*bat_debug)->attr).name, - S_IFREG | ((*bat_debug)->attr).mode, - bat_priv->debug_dir, dev, - &(*bat_debug)->fops); - - batadv_nc_init_debugfs(bat_priv); - - return 0; -rem_attr: - debugfs_remove_recursive(bat_priv->debug_dir); - bat_priv->debug_dir = NULL; - return -ENOMEM; -} - -/** - * batadv_debugfs_rename_meshif() - Fix debugfs path for renamed softif - * @dev: net_device which was renamed - */ -void batadv_debugfs_rename_meshif(struct net_device *dev) -{ - struct batadv_priv *bat_priv = netdev_priv(dev); - const char *name = dev->name; - struct dentry *dir; - - dir = bat_priv->debug_dir; - if (!dir) - return; - - debugfs_rename(dir->d_parent, dir, dir->d_parent, name); -} - -/** - * batadv_debugfs_del_meshif() - Remove interface dependent debugfs entries - * @dev: netdev struct of the soft interface - */ -void batadv_debugfs_del_meshif(struct net_device *dev) -{ - struct batadv_priv *bat_priv = netdev_priv(dev); - struct net *net = dev_net(dev); - - if (net != &init_net) - return; - - batadv_debug_log_cleanup(bat_priv); - - if (batadv_debugfs) { - debugfs_remove_recursive(bat_priv->debug_dir); - bat_priv->debug_dir = NULL; - } -} diff --git a/net/batman-adv/debugfs.h b/net/batman-adv/debugfs.h deleted file mode 100644 index 7e2e8f586f42..000000000000 --- a/net/batman-adv/debugfs.h +++ /dev/null @@ -1,73 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#ifndef _NET_BATMAN_ADV_DEBUGFS_H_ -#define _NET_BATMAN_ADV_DEBUGFS_H_ - -#include "main.h" - -#include <linux/fs.h> -#include <linux/netdevice.h> - -#define BATADV_DEBUGFS_SUBDIR "batman_adv" - -#if IS_ENABLED(CONFIG_BATMAN_ADV_DEBUGFS) - -void batadv_debugfs_deprecated(struct file *file, const char *alt); -void batadv_debugfs_init(void); -void batadv_debugfs_destroy(void); -int batadv_debugfs_add_meshif(struct net_device *dev); -void batadv_debugfs_rename_meshif(struct net_device *dev); -void batadv_debugfs_del_meshif(struct net_device *dev); -void batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface); -void batadv_debugfs_rename_hardif(struct batadv_hard_iface *hard_iface); -void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface); - -#else - -static inline void batadv_debugfs_deprecated(struct file *file, const char *alt) -{ -} - -static inline void batadv_debugfs_init(void) -{ -} - -static inline void batadv_debugfs_destroy(void) -{ -} - -static inline int batadv_debugfs_add_meshif(struct net_device *dev) -{ - return 0; -} - -static inline void batadv_debugfs_rename_meshif(struct net_device *dev) -{ -} - -static inline void batadv_debugfs_del_meshif(struct net_device *dev) -{ -} - -static inline -void batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface) -{ -} - -static inline -void batadv_debugfs_rename_hardif(struct batadv_hard_iface *hard_iface) -{ -} - -static inline -void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface) -{ -} - -#endif - -#endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */ diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 3d21dd83f8cc..fefb51a5f606 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Antonio Quartulli */ @@ -11,6 +11,7 @@ #include <linux/atomic.h> #include <linux/bitops.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -20,13 +21,11 @@ #include <linux/in.h> #include <linux/ip.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/netlink.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -88,7 +87,7 @@ struct batadv_dhcp_packet { __u8 sname[64]; __u8 file[128]; __be32 magic; - __u8 options[0]; + /* __u8 options[]; */ }; #define BATADV_DHCP_YIADDR_LEN sizeof(((struct batadv_dhcp_packet *)0)->yiaddr) @@ -128,6 +127,9 @@ static void batadv_dat_entry_release(struct kref *ref) */ static void batadv_dat_entry_put(struct batadv_dat_entry *dat_entry) { + if (!dat_entry) + return; + kref_put(&dat_entry->refcount, batadv_dat_entry_release); } @@ -406,8 +408,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip, &dat_entry->ip, dat_entry->mac_addr, batadv_print_vid(vid)); out: - if (dat_entry) - batadv_dat_entry_put(dat_entry); + batadv_dat_entry_put(dat_entry); } #ifdef CONFIG_BATMAN_ADV_DEBUG @@ -595,8 +596,7 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv, continue; max = tmp_max; - if (max_orig_node) - batadv_orig_node_put(max_orig_node); + batadv_orig_node_put(max_orig_node); max_orig_node = orig_node; } rcu_read_unlock(); @@ -666,7 +666,7 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst, * @vid: VLAN identifier * @packet_subtype: unicast4addr packet subtype to use * - * This function copies the skb with pskb_copy() and is sent as unicast packet + * This function copies the skb with pskb_copy() and is sent as a unicast packet * to each of the selected candidates. * * Return: true if the packet is sent to at least one candidate, false @@ -842,60 +842,6 @@ void batadv_dat_free(struct batadv_priv *bat_priv) batadv_dat_hash_free(bat_priv); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_dat_cache_seq_print_text() - print the local DAT hash table - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->dat.hash; - struct batadv_dat_entry *dat_entry; - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - unsigned long last_seen_jiffies; - int last_seen_msecs, last_seen_secs, last_seen_mins; - u32 i; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - goto out; - - seq_printf(seq, "Distributed ARP Table (%s):\n", net_dev->name); - seq_puts(seq, - " IPv4 MAC VID last-seen\n"); - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(dat_entry, head, hash_entry) { - last_seen_jiffies = jiffies - dat_entry->last_update; - last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); - last_seen_mins = last_seen_msecs / 60000; - last_seen_msecs = last_seen_msecs % 60000; - last_seen_secs = last_seen_msecs / 1000; - - seq_printf(seq, " * %15pI4 %pM %4i %6i:%02i\n", - &dat_entry->ip, dat_entry->mac_addr, - batadv_print_vid(dat_entry->vid), - last_seen_mins, last_seen_secs); - } - rcu_read_unlock(); - } - -out: - if (primary_if) - batadv_hardif_put(primary_if); - return 0; -} -#endif - /** * batadv_dat_cache_dump_entry() - dump one entry of the DAT cache table to a * netlink socket @@ -1036,11 +982,9 @@ int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + dev_put(soft_iface); return ret; } @@ -1273,8 +1217,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, BATADV_P_DAT_DHT_GET); } out: - if (dat_entry) - batadv_dat_entry_put(dat_entry); + batadv_dat_entry_put(dat_entry); return ret; } @@ -1341,8 +1284,7 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv, ret = true; } out: - if (dat_entry) - batadv_dat_entry_put(dat_entry); + batadv_dat_entry_put(dat_entry); if (ret) kfree_skb(skb); return ret; @@ -1475,8 +1417,7 @@ bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, out: if (dropped) kfree_skb(skb); - if (dat_entry) - batadv_dat_entry_put(dat_entry); + batadv_dat_entry_put(dat_entry); /* if dropped == false -> deliver to the interface */ return dropped; } @@ -1619,7 +1560,7 @@ static int batadv_dat_get_dhcp_message_type(struct sk_buff *skb) } /** - * batadv_dat_get_dhcp_yiaddr() - get yiaddr from a DHCP packet + * batadv_dat_dhcp_get_yiaddr() - get yiaddr from a DHCP packet * @skb: the DHCP packet to parse * @buf: a buffer to store the yiaddr in * @@ -1885,7 +1826,6 @@ bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv, ret = true; out: - if (dat_entry) - batadv_dat_entry_put(dat_entry); + batadv_dat_entry_put(dat_entry); return ret; } diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h index 2bff2f4a325c..bed7f3d20844 100644 --- a/net/batman-adv/distributed-arp-table.h +++ b/net/batman-adv/distributed-arp-table.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2011-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Antonio Quartulli */ @@ -12,7 +12,6 @@ #include <linux/compiler.h> #include <linux/netdevice.h> #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> #include <uapi/linux/batadv_packet.h> @@ -74,7 +73,6 @@ batadv_dat_init_own_addr(struct batadv_priv *bat_priv, int batadv_dat_init(struct batadv_priv *bat_priv); void batadv_dat_free(struct batadv_priv *bat_priv); -int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset); int batadv_dat_cache_dump(struct sk_buff *msg, struct netlink_callback *cb); /** @@ -163,11 +161,6 @@ static inline void batadv_dat_init_own_addr(struct batadv_priv *bat_priv, { } -static inline void batadv_arp_change_timeout(struct net_device *soft_iface, - const char *name) -{ -} - static inline int batadv_dat_init(struct batadv_priv *bat_priv) { return 0; diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c index 7cad97644d05..c120c7c6d25f 100644 --- a/net/batman-adv/fragmentation.c +++ b/net/batman-adv/fragmentation.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2013-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Martin Hundebøll <martin@hundeboll.net> */ @@ -14,8 +14,8 @@ #include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/lockdep.h> +#include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/slab.h> @@ -27,7 +27,6 @@ #include "originator.h" #include "routing.h" #include "send.h" -#include "soft-interface.h" /** * batadv_frag_clear_chain() - delete entries in the fragment buffer chain @@ -102,8 +101,8 @@ static int batadv_frag_size_limit(void) * * Caller must hold chain->lock. * - * Return: true if chain is empty and caller can just insert the new fragment - * without searching for the right position. + * Return: true if chain is empty and the caller can just insert the new + * fragment without searching for the right position. */ static bool batadv_frag_init_chain(struct batadv_frag_table_entry *chain, u16 seqno) @@ -306,7 +305,7 @@ free: * set *skb to merged packet; 2) Packet is buffered: Return true and set *skb * to NULL; 3) Error: Return false and free skb. * - * Return: true when packet is merged or buffered, false when skb is not not + * Return: true when the packet is merged or buffered, false when skb is not * used. */ bool batadv_frag_skb_buffer(struct sk_buff **skb, @@ -382,15 +381,14 @@ bool batadv_frag_skb_fwd(struct sk_buff *skb, } out: - if (orig_node_dst) - batadv_orig_node_put(orig_node_dst); - if (neigh_node) - batadv_neigh_node_put(neigh_node); + batadv_orig_node_put(orig_node_dst); + batadv_neigh_node_put(neigh_node); return ret; } /** * batadv_frag_create() - create a fragment from skb + * @net_dev: outgoing device for fragment * @skb: skb to create fragment from * @frag_head: header to use in new fragment * @fragment_size: size of new fragment @@ -401,22 +399,25 @@ out: * * Return: the new fragment, NULL on error. */ -static struct sk_buff *batadv_frag_create(struct sk_buff *skb, +static struct sk_buff *batadv_frag_create(struct net_device *net_dev, + struct sk_buff *skb, struct batadv_frag_packet *frag_head, unsigned int fragment_size) { + unsigned int ll_reserved = LL_RESERVED_SPACE(net_dev); + unsigned int tailroom = net_dev->needed_tailroom; struct sk_buff *skb_fragment; unsigned int header_size = sizeof(*frag_head); unsigned int mtu = fragment_size + header_size; - skb_fragment = netdev_alloc_skb(NULL, mtu + ETH_HLEN); + skb_fragment = dev_alloc_skb(ll_reserved + mtu + tailroom); if (!skb_fragment) goto err; skb_fragment->priority = skb->priority; /* Eat the last mtu-bytes of the skb */ - skb_reserve(skb_fragment, header_size + ETH_HLEN); + skb_reserve(skb_fragment, ll_reserved + header_size); skb_split(skb, skb_fragment, skb->len - fragment_size); /* Add the header */ @@ -439,11 +440,12 @@ int batadv_frag_send_packet(struct sk_buff *skb, struct batadv_orig_node *orig_node, struct batadv_neigh_node *neigh_node) { + struct net_device *net_dev = neigh_node->if_incoming->net_dev; struct batadv_priv *bat_priv; struct batadv_hard_iface *primary_if = NULL; struct batadv_frag_packet frag_header; struct sk_buff *skb_fragment; - unsigned int mtu = neigh_node->if_incoming->net_dev->mtu; + unsigned int mtu = net_dev->mtu; unsigned int header_size = sizeof(frag_header); unsigned int max_fragment_size, num_fragments; int ret; @@ -473,6 +475,17 @@ int batadv_frag_send_packet(struct sk_buff *skb, goto free_skb; } + /* GRO might have added fragments to the fragment list instead of + * frags[]. But this is not handled by skb_split and must be + * linearized to avoid incorrect length information after all + * batman-adv fragments were created and submitted to the + * hard-interface + */ + if (skb_has_frag_list(skb) && __skb_linearize(skb)) { + ret = -ENOMEM; + goto free_skb; + } + /* Create one header to be copied to all fragments */ frag_header.packet_type = BATADV_UNICAST_FRAG; frag_header.version = BATADV_COMPAT_VERSION; @@ -503,7 +516,7 @@ int batadv_frag_send_packet(struct sk_buff *skb, goto put_primary_if; } - skb_fragment = batadv_frag_create(skb, &frag_header, + skb_fragment = batadv_frag_create(net_dev, skb, &frag_header, max_fragment_size); if (!skb_fragment) { ret = -ENOMEM; @@ -522,13 +535,14 @@ int batadv_frag_send_packet(struct sk_buff *skb, frag_header.no++; } - /* Make room for the fragment header. */ - if (batadv_skb_head_push(skb, header_size) < 0 || - pskb_expand_head(skb, header_size + ETH_HLEN, 0, GFP_ATOMIC) < 0) { - ret = -ENOMEM; + /* make sure that there is at least enough head for the fragmentation + * and ethernet headers + */ + ret = skb_cow_head(skb, ETH_HLEN + header_size); + if (ret < 0) goto put_primary_if; - } + skb_push(skb, header_size); memcpy(skb->data, &frag_header, header_size); /* Send the last fragment */ diff --git a/net/batman-adv/fragmentation.h b/net/batman-adv/fragmentation.h index 881ef328b6cd..dbf0871f8703 100644 --- a/net/batman-adv/fragmentation.h +++ b/net/batman-adv/fragmentation.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2013-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Martin Hundebøll <martin@hundeboll.net> */ diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index e22e49289677..d26124bc27e1 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2009-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner */ @@ -9,6 +9,7 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -25,7 +26,6 @@ #include <linux/netlink.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -60,7 +60,7 @@ * after rcu grace period * @ref: kref pointer of the gw_node */ -static void batadv_gw_node_release(struct kref *ref) +void batadv_gw_node_release(struct kref *ref) { struct batadv_gw_node *gw_node; @@ -71,16 +71,6 @@ static void batadv_gw_node_release(struct kref *ref) } /** - * batadv_gw_node_put() - decrement the gw_node refcounter and possibly release - * it - * @gw_node: gateway node to free - */ -void batadv_gw_node_put(struct batadv_gw_node *gw_node) -{ - kref_put(&gw_node->refcount, batadv_gw_node_release); -} - -/** * batadv_gw_get_selected_gw_node() - Get currently selected gateway * @bat_priv: the bat priv with all the soft interface information * @@ -131,8 +121,7 @@ batadv_gw_get_selected_orig(struct batadv_priv *bat_priv) unlock: rcu_read_unlock(); out: - if (gw_node) - batadv_gw_node_put(gw_node); + batadv_gw_node_put(gw_node); return orig_node; } @@ -146,11 +135,10 @@ static void batadv_gw_select(struct batadv_priv *bat_priv, if (new_gw_node) kref_get(&new_gw_node->refcount); - curr_gw_node = rcu_dereference_protected(bat_priv->gw.curr_gw, 1); - rcu_assign_pointer(bat_priv->gw.curr_gw, new_gw_node); + curr_gw_node = rcu_replace_pointer(bat_priv->gw.curr_gw, new_gw_node, + true); - if (curr_gw_node) - batadv_gw_node_put(curr_gw_node); + batadv_gw_node_put(curr_gw_node); spin_unlock_bh(&bat_priv->gw.list_lock); } @@ -285,14 +273,10 @@ void batadv_gw_election(struct batadv_priv *bat_priv) batadv_gw_select(bat_priv, next_gw); out: - if (curr_gw) - batadv_gw_node_put(curr_gw); - if (next_gw) - batadv_gw_node_put(next_gw); - if (router) - batadv_neigh_node_put(router); - if (router_ifinfo) - batadv_neigh_ifinfo_put(router_ifinfo); + batadv_gw_node_put(curr_gw); + batadv_gw_node_put(next_gw); + batadv_neigh_node_put(router); + batadv_neigh_ifinfo_put(router_ifinfo); } /** @@ -326,8 +310,7 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv, reselect: batadv_gw_reselect(bat_priv); out: - if (curr_gw_orig) - batadv_orig_node_put(curr_gw_orig); + batadv_orig_node_put(curr_gw_orig); } /** @@ -467,13 +450,11 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv, if (gw_node == curr_gw) batadv_gw_reselect(bat_priv); - if (curr_gw) - batadv_gw_node_put(curr_gw); + batadv_gw_node_put(curr_gw); } out: - if (gw_node) - batadv_gw_node_put(gw_node); + batadv_gw_node_put(gw_node); } /** @@ -511,44 +492,6 @@ void batadv_gw_node_free(struct batadv_priv *bat_priv) spin_unlock_bh(&bat_priv->gw.list_lock); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -/** - * batadv_gw_client_seq_print_text() - Print the gateway table in a seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hard_iface *primary_if; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - return 0; - - seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", - BATADV_SOURCE_VERSION, primary_if->net_dev->name, - primary_if->net_dev->dev_addr, net_dev->name, - bat_priv->algo_ops->name); - - batadv_hardif_put(primary_if); - - if (!bat_priv->algo_ops->gw.print) { - seq_puts(seq, - "No printing function for this routing protocol\n"); - return 0; - } - - bat_priv->algo_ops->gw.print(bat_priv, seq); - - return 0; -} -#endif - /** * batadv_gw_dump() - Dump gateways into a message * @msg: Netlink message to dump into @@ -594,10 +537,8 @@ int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + batadv_hardif_put(primary_if); + dev_put(soft_iface); return ret; } @@ -703,8 +644,10 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len, chaddr_offset = *header_len + BATADV_DHCP_CHADDR_OFFSET; /* store the client address if the message is going to a client */ - if (ret == BATADV_DHCP_TO_CLIENT && - pskb_may_pull(skb, chaddr_offset + ETH_ALEN)) { + if (ret == BATADV_DHCP_TO_CLIENT) { + if (!pskb_may_pull(skb, chaddr_offset + ETH_ALEN)) + return BATADV_DHCP_NO; + /* check if the DHCP packet carries an Ethernet DHCP */ p = skb->data + *header_len + BATADV_DHCP_HTYPE_OFFSET; if (*p != BATADV_DHCP_HTYPE_ETHERNET) @@ -817,15 +760,10 @@ bool batadv_gw_out_of_range(struct batadv_priv *bat_priv, batadv_neigh_ifinfo_put(old_ifinfo); out: - if (orig_dst_node) - batadv_orig_node_put(orig_dst_node); - if (curr_gw) - batadv_gw_node_put(curr_gw); - if (gw_node) - batadv_gw_node_put(gw_node); - if (neigh_old) - batadv_neigh_node_put(neigh_old); - if (neigh_curr) - batadv_neigh_node_put(neigh_curr); + batadv_orig_node_put(orig_dst_node); + batadv_gw_node_put(curr_gw); + batadv_gw_node_put(gw_node); + batadv_neigh_node_put(neigh_old); + batadv_neigh_node_put(neigh_curr); return out_of_range; } diff --git a/net/batman-adv/gateway_client.h b/net/batman-adv/gateway_client.h index 88b5dba84354..95c2ccdaa554 100644 --- a/net/batman-adv/gateway_client.h +++ b/net/batman-adv/gateway_client.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2009-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner */ @@ -9,8 +9,8 @@ #include "main.h" +#include <linux/kref.h> #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> #include <uapi/linux/batadv_packet.h> @@ -28,10 +28,9 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv, void batadv_gw_node_delete(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node); void batadv_gw_node_free(struct batadv_priv *bat_priv); -void batadv_gw_node_put(struct batadv_gw_node *gw_node); +void batadv_gw_node_release(struct kref *ref); struct batadv_gw_node * batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv); -int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset); int batadv_gw_dump(struct sk_buff *msg, struct netlink_callback *cb); bool batadv_gw_out_of_range(struct batadv_priv *bat_priv, struct sk_buff *skb); enum batadv_dhcp_recipient @@ -40,4 +39,17 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len, struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node); +/** + * batadv_gw_node_put() - decrement the gw_node refcounter and possibly release + * it + * @gw_node: gateway node to free + */ +static inline void batadv_gw_node_put(struct batadv_gw_node *gw_node) +{ + if (!gw_node) + return; + + kref_put(&gw_node->refcount, batadv_gw_node_release); +} + #endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */ diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index 16cd9450ceb1..9349c76f30c5 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2009-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner */ @@ -10,7 +10,7 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> #include <linux/errno.h> -#include <linux/kernel.h> +#include <linux/kstrtox.h> #include <linux/limits.h> #include <linux/math64.h> #include <linux/netdevice.h> diff --git a/net/batman-adv/gateway_common.h b/net/batman-adv/gateway_common.h index c3a0c5a7f7e9..87c37f907261 100644 --- a/net/batman-adv/gateway_common.h +++ b/net/batman-adv/gateway_common.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2009-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner */ diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index c7e98a40dd33..41c1ad33d009 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -9,15 +9,16 @@ #include <linux/atomic.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/gfp.h> #include <linux/if.h> #include <linux/if_arp.h> #include <linux/if_ether.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/limits.h> #include <linux/list.h> +#include <linux/minmax.h> #include <linux/mutex.h> #include <linux/netdevice.h> #include <linux/printk.h> @@ -31,14 +32,12 @@ #include "bat_v.h" #include "bridge_loop_avoidance.h" -#include "debugfs.h" #include "distributed-arp-table.h" #include "gateway_client.h" #include "log.h" #include "originator.h" #include "send.h" #include "soft-interface.h" -#include "sysfs.h" #include "translation-table.h" /** @@ -138,10 +137,10 @@ static bool batadv_mutual_parents(const struct net_device *dev1, * @net_dev: the device to check * * If the user creates any virtual device on top of a batman-adv interface, it - * is important to prevent this new interface to be used to create a new mesh - * network (this behaviour would lead to a batman-over-batman configuration). - * This function recursively checks all the fathers of the device passed as - * argument looking for a batman-adv soft interface. + * is important to prevent this new interface from being used to create a new + * mesh network (this behaviour would lead to a batman-over-batman + * configuration). This function recursively checks all the fathers of the + * device passed as argument looking for a batman-adv soft interface. * * Return: true if the device is descendant of a batman-adv mesh interface (or * if it is a batman-adv interface itself), false otherwise @@ -151,25 +150,28 @@ static bool batadv_is_on_batman_iface(const struct net_device *net_dev) struct net *net = dev_net(net_dev); struct net_device *parent_dev; struct net *parent_net; + int iflink; bool ret; /* check if this is a batman-adv mesh interface */ if (batadv_softif_is_valid(net_dev)) return true; - /* no more parents..stop recursion */ - if (dev_get_iflink(net_dev) == 0 || - dev_get_iflink(net_dev) == net_dev->ifindex) + iflink = dev_get_iflink(net_dev); + if (iflink == 0) return false; parent_net = batadv_getlink_net(net_dev, net); + /* iflink to itself, most likely physical device */ + if (net == parent_net && iflink == net_dev->ifindex) + return false; + /* recurse over the parent device */ - parent_dev = __dev_get_by_index((struct net *)parent_net, - dev_get_iflink(net_dev)); - /* if we got a NULL parent_dev there is something broken.. */ + parent_dev = __dev_get_by_index((struct net *)parent_net, iflink); if (!parent_dev) { - pr_err("Cannot find parent device\n"); + pr_warn("Cannot find parent device. Skipping batadv-on-batadv check for %s\n", + net_dev->name); return false; } @@ -216,14 +218,15 @@ static struct net_device *batadv_get_real_netdevice(struct net_device *netdev) struct net_device *real_netdev = NULL; struct net *real_net; struct net *net; - int ifindex; + int iflink; ASSERT_RTNL(); if (!netdev) return NULL; - if (netdev->ifindex == dev_get_iflink(netdev)) { + iflink = dev_get_iflink(netdev); + if (iflink == 0) { dev_hold(netdev); return netdev; } @@ -233,13 +236,19 @@ static struct net_device *batadv_get_real_netdevice(struct net_device *netdev) goto out; net = dev_net(hard_iface->soft_iface); - ifindex = dev_get_iflink(netdev); real_net = batadv_getlink_net(netdev, net); - real_netdev = dev_get_by_index(real_net, ifindex); + + /* iflink to itself, most likely physical device */ + if (net == real_net && netdev->ifindex == iflink) { + real_netdev = netdev; + dev_hold(real_netdev); + goto out; + } + + real_netdev = dev_get_by_index(real_net, iflink); out: - if (hard_iface) - batadv_hardif_put(hard_iface); + batadv_hardif_put(hard_iface); return real_netdev; } @@ -299,9 +308,11 @@ static bool batadv_is_cfg80211_netdev(struct net_device *net_device) if (!net_device) return false; +#if IS_ENABLED(CONFIG_CFG80211) /* cfg80211 drivers have to set ieee80211_ptr */ if (net_device->ieee80211_ptr) return true; +#endif return false; } @@ -404,7 +415,7 @@ int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing, goto out; } - /* >1 neighbors -> (re)brodcast */ + /* >1 neighbors -> (re)broadcast */ if (rcu_dereference(hlist_next_rcu(first))) goto out; @@ -459,8 +470,7 @@ static void batadv_primary_if_update_addr(struct batadv_priv *bat_priv, batadv_dat_init_own_addr(bat_priv, primary_if); batadv_bla_update_orig_address(bat_priv, primary_if, oldif); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } static void batadv_primary_if_select(struct batadv_priv *bat_priv, @@ -473,8 +483,8 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv, if (new_hard_iface) kref_get(&new_hard_iface->refcount); - curr_hard_iface = rcu_dereference_protected(bat_priv->primary_if, 1); - rcu_assign_pointer(bat_priv->primary_if, new_hard_iface); + curr_hard_iface = rcu_replace_pointer(bat_priv->primary_if, + new_hard_iface, 1); if (!new_hard_iface) goto out; @@ -483,8 +493,7 @@ static void batadv_primary_if_select(struct batadv_priv *bat_priv, batadv_primary_if_update_addr(bat_priv, curr_hard_iface); out: - if (curr_hard_iface) - batadv_hardif_put(curr_hard_iface); + batadv_hardif_put(curr_hard_iface); } static bool @@ -554,6 +563,9 @@ static void batadv_hardif_recalc_extra_skbroom(struct net_device *soft_iface) needed_headroom = lower_headroom + (lower_header_len - ETH_HLEN); needed_headroom += batadv_max_header_len(); + /* fragmentation headers don't strip the unicast/... header */ + needed_headroom += sizeof(struct batadv_frag_packet); + soft_iface->needed_headroom = needed_headroom; soft_iface->needed_tailroom = lower_tailroom; } @@ -599,7 +611,7 @@ out: /* report to the other components the maximum amount of bytes that * batman-adv can send over the wire (without considering the payload * overhead). For example, this value is used by TT to compute the - * maximum local table table size + * maximum local table size */ atomic_set(&bat_priv->packet_size_max, min_mtu); @@ -656,8 +668,7 @@ batadv_hardif_activate_interface(struct batadv_hard_iface *hard_iface) bat_priv->algo_ops->iface.activate(hard_iface); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } static void @@ -676,81 +687,29 @@ batadv_hardif_deactivate_interface(struct batadv_hard_iface *hard_iface) } /** - * batadv_master_del_slave() - remove hard_iface from the current master iface - * @slave: the interface enslaved in another master - * @master: the master from which slave has to be removed - * - * Invoke ndo_del_slave on master passing slave as argument. In this way slave - * is free'd and master can correctly change its internal state. - * - * Return: 0 on success, a negative value representing the error otherwise - */ -static int batadv_master_del_slave(struct batadv_hard_iface *slave, - struct net_device *master) -{ - int ret; - - if (!master) - return 0; - - ret = -EBUSY; - if (master->netdev_ops->ndo_del_slave) - ret = master->netdev_ops->ndo_del_slave(master, slave->net_dev); - - return ret; -} - -/** * batadv_hardif_enable_interface() - Enslave hard interface to soft interface * @hard_iface: hard interface to add to soft interface - * @net: the applicable net namespace - * @iface_name: name of the soft interface + * @soft_iface: netdev struct of the mesh interface * * Return: 0 on success or negative error number in case of failure */ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, - struct net *net, const char *iface_name) + struct net_device *soft_iface) { struct batadv_priv *bat_priv; - struct net_device *soft_iface, *master; __be16 ethertype = htons(ETH_P_BATMAN); int max_header_len = batadv_max_header_len(); int ret; + if (hard_iface->net_dev->mtu < ETH_MIN_MTU + max_header_len) + return -EINVAL; + if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) goto out; kref_get(&hard_iface->refcount); - soft_iface = dev_get_by_name(net, iface_name); - - if (!soft_iface) { - soft_iface = batadv_softif_create(net, iface_name); - - if (!soft_iface) { - ret = -ENOMEM; - goto err; - } - - /* dev_get_by_name() increases the reference counter for us */ - dev_hold(soft_iface); - } - - if (!batadv_softif_is_valid(soft_iface)) { - pr_err("Can't create batman mesh interface %s: already exists as regular interface\n", - soft_iface->name); - ret = -EINVAL; - goto err_dev; - } - - /* check if the interface is enslaved in another virtual one and - * in that case unlink it first - */ - master = netdev_master_upper_dev_get(hard_iface->net_dev); - ret = batadv_master_del_slave(hard_iface, master); - if (ret) - goto err_dev; - + dev_hold(soft_iface); hard_iface->soft_iface = soft_iface; bat_priv = netdev_priv(hard_iface->soft_iface); @@ -808,7 +767,6 @@ err_upper: err_dev: hard_iface->soft_iface = NULL; dev_put(soft_iface); -err: batadv_hardif_put(hard_iface); return ret; } @@ -818,7 +776,7 @@ err: * @soft_iface: soft interface to check * * This function is only using RCU for locking - the result can therefore be - * off when another functions is modifying the list at the same time. The + * off when another function is modifying the list at the same time. The * caller can use the rtnl_lock to make sure that the count is accurate. * * Return: number of connected/enslaved hard interfaces @@ -843,11 +801,8 @@ static size_t batadv_hardif_cnt(const struct net_device *soft_iface) /** * batadv_hardif_disable_interface() - Remove hard interface from soft interface * @hard_iface: hard interface to be removed - * @autodel: whether to delete soft interface when it doesn't contain any other - * slave interfaces */ -void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, - enum batadv_hard_if_cleanup autodel) +void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface) { struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); struct batadv_hard_iface *primary_if = NULL; @@ -869,8 +824,7 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, new_if = batadv_hardif_get_active(hard_iface->soft_iface); batadv_primary_if_select(bat_priv, new_if); - if (new_if) - batadv_hardif_put(new_if); + batadv_hardif_put(new_if); } bat_priv->algo_ops->iface.disable(hard_iface); @@ -885,26 +839,20 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, batadv_hardif_recalc_extra_skbroom(hard_iface->soft_iface); /* nobody uses this interface anymore */ - if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1) { + if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1) batadv_gw_check_client_stop(bat_priv); - if (autodel == BATADV_IF_CLEANUP_AUTO) - batadv_softif_destroy_sysfs(hard_iface->soft_iface); - } - hard_iface->soft_iface = NULL; batadv_hardif_put(hard_iface); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } static struct batadv_hard_iface * batadv_hardif_add_interface(struct net_device *net_dev) { struct batadv_hard_iface *hard_iface; - int ret; ASSERT_RTNL(); @@ -917,16 +865,10 @@ batadv_hardif_add_interface(struct net_device *net_dev) if (!hard_iface) goto release_dev; - ret = batadv_sysfs_add_hardif(&hard_iface->hardif_obj, net_dev); - if (ret) - goto free_if; - hard_iface->net_dev = net_dev; hard_iface->soft_iface = NULL; hard_iface->if_status = BATADV_IF_NOT_IN_USE; - batadv_debugfs_add_hardif(hard_iface); - INIT_LIST_HEAD(&hard_iface->list); INIT_HLIST_HEAD(&hard_iface->neigh_list); @@ -939,6 +881,8 @@ batadv_hardif_add_interface(struct net_device *net_dev) if (batadv_is_wifi_hardif(hard_iface)) hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS; + atomic_set(&hard_iface->hop_penalty, 0); + batadv_v_hardif_init(hard_iface); batadv_check_known_mac_addr(hard_iface->net_dev); @@ -948,8 +892,6 @@ batadv_hardif_add_interface(struct net_device *net_dev) return hard_iface; -free_if: - kfree(hard_iface); release_dev: dev_put(net_dev); out: @@ -962,36 +904,16 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) /* first deactivate interface */ if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) - batadv_hardif_disable_interface(hard_iface, - BATADV_IF_CLEANUP_KEEP); + batadv_hardif_disable_interface(hard_iface); if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) return; hard_iface->if_status = BATADV_IF_TO_BE_REMOVED; - batadv_debugfs_del_hardif(hard_iface); - batadv_sysfs_del_hardif(&hard_iface->hardif_obj); batadv_hardif_put(hard_iface); } /** - * batadv_hardif_remove_interfaces() - Remove all hard interfaces - */ -void batadv_hardif_remove_interfaces(void) -{ - struct batadv_hard_iface *hard_iface, *hard_iface_tmp; - - rtnl_lock(); - list_for_each_entry_safe(hard_iface, hard_iface_tmp, - &batadv_hardif_list, list) { - list_del_rcu(&hard_iface->list); - batadv_hardif_generation++; - batadv_hardif_remove_interface(hard_iface); - } - rtnl_unlock(); -} - -/** * batadv_hard_if_event_softif() - Handle events for soft interfaces * @event: NETDEV_* event to handle * @net_dev: net_device which generated an event @@ -1005,13 +927,9 @@ static int batadv_hard_if_event_softif(unsigned long event, switch (event) { case NETDEV_REGISTER: - batadv_sysfs_add_meshif(net_dev); bat_priv = netdev_priv(net_dev); batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS); break; - case NETDEV_CHANGENAME: - batadv_debugfs_rename_meshif(net_dev); - break; } return NOTIFY_DONE; @@ -1076,9 +994,6 @@ static int batadv_hard_if_event(struct notifier_block *this, if (batadv_is_wifi_hardif(hard_iface)) hard_iface->num_bcasts = BATADV_NUM_BCASTS_WIRELESS; break; - case NETDEV_CHANGENAME: - batadv_debugfs_rename_hardif(hard_iface); - break; default: break; } @@ -1086,8 +1001,7 @@ static int batadv_hard_if_event(struct notifier_block *this, hardif_put: batadv_hardif_put(hard_iface); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); return NOTIFY_DONE; } diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index bad2e50135e8..64f660dbbe54 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -16,7 +16,6 @@ #include <linux/rcupdate.h> #include <linux/stddef.h> #include <linux/types.h> -#include <net/net_namespace.h> /** * enum batadv_hard_if_state - State of a hard interface @@ -42,12 +41,6 @@ enum batadv_hard_if_state { /** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */ BATADV_IF_TO_BE_ACTIVATED, - - /** - * @BATADV_IF_I_WANT_YOU: interface is queued up (using sysfs) for being - * added as slave interface of a batman-adv soft interface - */ - BATADV_IF_I_WANT_YOU, }; /** @@ -73,22 +66,6 @@ enum batadv_hard_if_bcast { BATADV_HARDIF_BCAST_DUPORIG, }; -/** - * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal - */ -enum batadv_hard_if_cleanup { - /** - * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface - */ - BATADV_IF_CLEANUP_KEEP, - - /** - * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was - * removed - */ - BATADV_IF_CLEANUP_AUTO, -}; - extern struct notifier_block batadv_hard_if_notifier; struct net_device *batadv_get_real_netdev(struct net_device *net_device); @@ -97,10 +74,8 @@ bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface); struct batadv_hard_iface* batadv_hardif_get_by_netdev(const struct net_device *net_dev); int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, - struct net *net, const char *iface_name); -void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, - enum batadv_hard_if_cleanup autodel); -void batadv_hardif_remove_interfaces(void); + struct net_device *soft_iface); +void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface); int batadv_hardif_min_mtu(struct net_device *soft_iface); void batadv_update_min_mtu(struct net_device *soft_iface); void batadv_hardif_release(struct kref *ref); @@ -114,6 +89,9 @@ int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing, */ static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) { + if (!hard_iface) + return; + kref_put(&hard_iface->refcount, batadv_hardif_release); } diff --git a/net/batman-adv/hash.c b/net/batman-adv/hash.c index 68638e0450a6..8016e619787f 100644 --- a/net/batman-adv/hash.c +++ b/net/batman-adv/hash.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2006-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner */ diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h index 91ae9f32b580..fb251c385a1b 100644 --- a/net/batman-adv/hash.h +++ b/net/batman-adv/hash.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2006-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner */ @@ -18,7 +18,7 @@ #include <linux/stddef.h> #include <linux/types.h> -/* callback to a compare function. should compare 2 element datas for their +/* callback to a compare function. should compare 2 element data for their * keys * * Return: true if same and false if not same diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c deleted file mode 100644 index ccb535c77e5d..000000000000 --- a/net/batman-adv/icmp_socket.c +++ /dev/null @@ -1,395 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#include "icmp_socket.h" -#include "main.h" - -#include <linux/atomic.h> -#include <linux/compiler.h> -#include <linux/debugfs.h> -#include <linux/errno.h> -#include <linux/etherdevice.h> -#include <linux/eventpoll.h> -#include <linux/export.h> -#include <linux/fcntl.h> -#include <linux/fs.h> -#include <linux/gfp.h> -#include <linux/if_ether.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/module.h> -#include <linux/netdevice.h> -#include <linux/pkt_sched.h> -#include <linux/poll.h> -#include <linux/printk.h> -#include <linux/sched.h> /* for linux/wait.h */ -#include <linux/skbuff.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/stddef.h> -#include <linux/string.h> -#include <linux/uaccess.h> -#include <linux/wait.h> -#include <uapi/linux/batadv_packet.h> - -#include "debugfs.h" -#include "hard-interface.h" -#include "log.h" -#include "originator.h" -#include "send.h" - -static struct batadv_socket_client *batadv_socket_client_hash[256]; - -static void batadv_socket_add_packet(struct batadv_socket_client *socket_client, - struct batadv_icmp_header *icmph, - size_t icmp_len); - -/** - * batadv_socket_init() - Initialize soft interface independent socket data - */ -void batadv_socket_init(void) -{ - memset(batadv_socket_client_hash, 0, sizeof(batadv_socket_client_hash)); -} - -static int batadv_socket_open(struct inode *inode, struct file *file) -{ - unsigned int i; - struct batadv_socket_client *socket_client; - - if (!try_module_get(THIS_MODULE)) - return -EBUSY; - - batadv_debugfs_deprecated(file, ""); - - stream_open(inode, file); - - socket_client = kmalloc(sizeof(*socket_client), GFP_KERNEL); - if (!socket_client) { - module_put(THIS_MODULE); - return -ENOMEM; - } - - for (i = 0; i < ARRAY_SIZE(batadv_socket_client_hash); i++) { - if (!batadv_socket_client_hash[i]) { - batadv_socket_client_hash[i] = socket_client; - break; - } - } - - if (i == ARRAY_SIZE(batadv_socket_client_hash)) { - pr_err("Error - can't add another packet client: maximum number of clients reached\n"); - kfree(socket_client); - module_put(THIS_MODULE); - return -EXFULL; - } - - INIT_LIST_HEAD(&socket_client->queue_list); - socket_client->queue_len = 0; - socket_client->index = i; - socket_client->bat_priv = inode->i_private; - spin_lock_init(&socket_client->lock); - init_waitqueue_head(&socket_client->queue_wait); - - file->private_data = socket_client; - - return 0; -} - -static int batadv_socket_release(struct inode *inode, struct file *file) -{ - struct batadv_socket_client *client = file->private_data; - struct batadv_socket_packet *packet, *tmp; - - spin_lock_bh(&client->lock); - - /* for all packets in the queue ... */ - list_for_each_entry_safe(packet, tmp, &client->queue_list, list) { - list_del(&packet->list); - kfree(packet); - } - - batadv_socket_client_hash[client->index] = NULL; - spin_unlock_bh(&client->lock); - - kfree(client); - module_put(THIS_MODULE); - - return 0; -} - -static ssize_t batadv_socket_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct batadv_socket_client *socket_client = file->private_data; - struct batadv_socket_packet *socket_packet; - size_t packet_len; - int error; - - if ((file->f_flags & O_NONBLOCK) && socket_client->queue_len == 0) - return -EAGAIN; - - if (!buf || count < sizeof(struct batadv_icmp_packet)) - return -EINVAL; - - if (!access_ok(buf, count)) - return -EFAULT; - - error = wait_event_interruptible(socket_client->queue_wait, - socket_client->queue_len); - - if (error) - return error; - - spin_lock_bh(&socket_client->lock); - - socket_packet = list_first_entry(&socket_client->queue_list, - struct batadv_socket_packet, list); - list_del(&socket_packet->list); - socket_client->queue_len--; - - spin_unlock_bh(&socket_client->lock); - - packet_len = min(count, socket_packet->icmp_len); - error = copy_to_user(buf, &socket_packet->icmp_packet, packet_len); - - kfree(socket_packet); - - if (error) - return -EFAULT; - - return packet_len; -} - -static ssize_t batadv_socket_write(struct file *file, const char __user *buff, - size_t len, loff_t *off) -{ - struct batadv_socket_client *socket_client = file->private_data; - struct batadv_priv *bat_priv = socket_client->bat_priv; - struct batadv_hard_iface *primary_if = NULL; - struct sk_buff *skb; - struct batadv_icmp_packet_rr *icmp_packet_rr; - struct batadv_icmp_header *icmp_header; - struct batadv_orig_node *orig_node = NULL; - struct batadv_neigh_node *neigh_node = NULL; - size_t packet_len = sizeof(struct batadv_icmp_packet); - u8 *addr; - - if (len < sizeof(struct batadv_icmp_header)) { - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Error - can't send packet from char device: invalid packet size\n"); - return -EINVAL; - } - - primary_if = batadv_primary_if_get_selected(bat_priv); - - if (!primary_if) { - len = -EFAULT; - goto out; - } - - if (len >= BATADV_ICMP_MAX_PACKET_SIZE) - packet_len = BATADV_ICMP_MAX_PACKET_SIZE; - else - packet_len = len; - - skb = netdev_alloc_skb_ip_align(NULL, packet_len + ETH_HLEN); - if (!skb) { - len = -ENOMEM; - goto out; - } - - skb->priority = TC_PRIO_CONTROL; - skb_reserve(skb, ETH_HLEN); - icmp_header = skb_put(skb, packet_len); - - if (copy_from_user(icmp_header, buff, packet_len)) { - len = -EFAULT; - goto free_skb; - } - - if (icmp_header->packet_type != BATADV_ICMP) { - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Error - can't send packet from char device: got bogus packet type (expected: BAT_ICMP)\n"); - len = -EINVAL; - goto free_skb; - } - - switch (icmp_header->msg_type) { - case BATADV_ECHO_REQUEST: - if (len < sizeof(struct batadv_icmp_packet)) { - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Error - can't send packet from char device: invalid packet size\n"); - len = -EINVAL; - goto free_skb; - } - - if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) - goto dst_unreach; - - orig_node = batadv_orig_hash_find(bat_priv, icmp_header->dst); - if (!orig_node) - goto dst_unreach; - - neigh_node = batadv_orig_router_get(orig_node, - BATADV_IF_DEFAULT); - if (!neigh_node) - goto dst_unreach; - - if (!neigh_node->if_incoming) - goto dst_unreach; - - if (neigh_node->if_incoming->if_status != BATADV_IF_ACTIVE) - goto dst_unreach; - - icmp_packet_rr = (struct batadv_icmp_packet_rr *)icmp_header; - if (packet_len == sizeof(*icmp_packet_rr)) { - addr = neigh_node->if_incoming->net_dev->dev_addr; - ether_addr_copy(icmp_packet_rr->rr[0], addr); - } - - break; - default: - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Error - can't send packet from char device: got unknown message type\n"); - len = -EINVAL; - goto free_skb; - } - - icmp_header->uid = socket_client->index; - - if (icmp_header->version != BATADV_COMPAT_VERSION) { - icmp_header->msg_type = BATADV_PARAMETER_PROBLEM; - icmp_header->version = BATADV_COMPAT_VERSION; - batadv_socket_add_packet(socket_client, icmp_header, - packet_len); - goto free_skb; - } - - ether_addr_copy(icmp_header->orig, primary_if->net_dev->dev_addr); - - batadv_send_unicast_skb(skb, neigh_node); - goto out; - -dst_unreach: - icmp_header->msg_type = BATADV_DESTINATION_UNREACHABLE; - batadv_socket_add_packet(socket_client, icmp_header, packet_len); -free_skb: - kfree_skb(skb); -out: - if (primary_if) - batadv_hardif_put(primary_if); - if (neigh_node) - batadv_neigh_node_put(neigh_node); - if (orig_node) - batadv_orig_node_put(orig_node); - return len; -} - -static __poll_t batadv_socket_poll(struct file *file, poll_table *wait) -{ - struct batadv_socket_client *socket_client = file->private_data; - - poll_wait(file, &socket_client->queue_wait, wait); - - if (socket_client->queue_len > 0) - return EPOLLIN | EPOLLRDNORM; - - return 0; -} - -static const struct file_operations batadv_fops = { - .owner = THIS_MODULE, - .open = batadv_socket_open, - .release = batadv_socket_release, - .read = batadv_socket_read, - .write = batadv_socket_write, - .poll = batadv_socket_poll, - .llseek = no_llseek, -}; - -/** - * batadv_socket_setup() - Create debugfs "socket" file - * @bat_priv: the bat priv with all the soft interface information - */ -void batadv_socket_setup(struct batadv_priv *bat_priv) -{ - debugfs_create_file(BATADV_ICMP_SOCKET, 0600, bat_priv->debug_dir, - bat_priv, &batadv_fops); -} - -/** - * batadv_socket_add_packet() - schedule an icmp packet to be sent to - * userspace on an icmp socket. - * @socket_client: the socket this packet belongs to - * @icmph: pointer to the header of the icmp packet - * @icmp_len: total length of the icmp packet - */ -static void batadv_socket_add_packet(struct batadv_socket_client *socket_client, - struct batadv_icmp_header *icmph, - size_t icmp_len) -{ - struct batadv_socket_packet *socket_packet; - size_t len; - - socket_packet = kmalloc(sizeof(*socket_packet), GFP_ATOMIC); - - if (!socket_packet) - return; - - len = icmp_len; - /* check the maximum length before filling the buffer */ - if (len > sizeof(socket_packet->icmp_packet)) - len = sizeof(socket_packet->icmp_packet); - - INIT_LIST_HEAD(&socket_packet->list); - memcpy(&socket_packet->icmp_packet, icmph, len); - socket_packet->icmp_len = len; - - spin_lock_bh(&socket_client->lock); - - /* while waiting for the lock the socket_client could have been - * deleted - */ - if (!batadv_socket_client_hash[icmph->uid]) { - spin_unlock_bh(&socket_client->lock); - kfree(socket_packet); - return; - } - - list_add_tail(&socket_packet->list, &socket_client->queue_list); - socket_client->queue_len++; - - if (socket_client->queue_len > 100) { - socket_packet = list_first_entry(&socket_client->queue_list, - struct batadv_socket_packet, - list); - - list_del(&socket_packet->list); - kfree(socket_packet); - socket_client->queue_len--; - } - - spin_unlock_bh(&socket_client->lock); - - wake_up(&socket_client->queue_wait); -} - -/** - * batadv_socket_receive_packet() - schedule an icmp packet to be received - * locally and sent to userspace. - * @icmph: pointer to the header of the icmp packet - * @icmp_len: total length of the icmp packet - */ -void batadv_socket_receive_packet(struct batadv_icmp_header *icmph, - size_t icmp_len) -{ - struct batadv_socket_client *hash; - - hash = batadv_socket_client_hash[icmph->uid]; - if (hash) - batadv_socket_add_packet(hash, icmph, icmp_len); -} diff --git a/net/batman-adv/icmp_socket.h b/net/batman-adv/icmp_socket.h deleted file mode 100644 index 6abd0f4742ef..000000000000 --- a/net/batman-adv/icmp_socket.h +++ /dev/null @@ -1,38 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#ifndef _NET_BATMAN_ADV_ICMP_SOCKET_H_ -#define _NET_BATMAN_ADV_ICMP_SOCKET_H_ - -#include "main.h" - -#include <linux/types.h> -#include <uapi/linux/batadv_packet.h> - -#define BATADV_ICMP_SOCKET "socket" - -void batadv_socket_setup(struct batadv_priv *bat_priv); - -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -void batadv_socket_init(void); -void batadv_socket_receive_packet(struct batadv_icmp_header *icmph, - size_t icmp_len); - -#else - -static inline void batadv_socket_init(void) -{ -} - -static inline void -batadv_socket_receive_packet(struct batadv_icmp_header *icmph, size_t icmp_len) -{ -} - -#endif - -#endif /* _NET_BATMAN_ADV_ICMP_SOCKET_H_ */ diff --git a/net/batman-adv/log.c b/net/batman-adv/log.c index a67b2b091447..7a93a1e94c40 100644 --- a/net/batman-adv/log.c +++ b/net/batman-adv/log.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner */ @@ -7,213 +7,10 @@ #include "log.h" #include "main.h" -#include <linux/compiler.h> -#include <linux/debugfs.h> -#include <linux/errno.h> -#include <linux/eventpoll.h> -#include <linux/export.h> -#include <linux/fcntl.h> -#include <linux/fs.h> -#include <linux/gfp.h> -#include <linux/jiffies.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/poll.h> -#include <linux/sched.h> /* for linux/wait.h */ -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/stddef.h> -#include <linux/types.h> -#include <linux/uaccess.h> -#include <linux/wait.h> -#include <stdarg.h> +#include <linux/stdarg.h> -#include "debugfs.h" #include "trace.h" -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1) - -static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN; - -static char *batadv_log_char_addr(struct batadv_priv_debug_log *debug_log, - size_t idx) -{ - return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK]; -} - -static void batadv_emit_log_char(struct batadv_priv_debug_log *debug_log, - char c) -{ - char *char_addr; - - char_addr = batadv_log_char_addr(debug_log, debug_log->log_end); - *char_addr = c; - debug_log->log_end++; - - if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len) - debug_log->log_start = debug_log->log_end - batadv_log_buff_len; -} - -__printf(2, 3) -static int batadv_fdebug_log(struct batadv_priv_debug_log *debug_log, - const char *fmt, ...) -{ - va_list args; - static char debug_log_buf[256]; - char *p; - - if (!debug_log) - return 0; - - spin_lock_bh(&debug_log->lock); - va_start(args, fmt); - vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args); - va_end(args); - - for (p = debug_log_buf; *p != 0; p++) - batadv_emit_log_char(debug_log, *p); - - spin_unlock_bh(&debug_log->lock); - - wake_up(&debug_log->queue_wait); - - return 0; -} - -static int batadv_log_open(struct inode *inode, struct file *file) -{ - if (!try_module_get(THIS_MODULE)) - return -EBUSY; - - batadv_debugfs_deprecated(file, - "Use tracepoint batadv:batadv_dbg instead\n"); - - stream_open(inode, file); - file->private_data = inode->i_private; - return 0; -} - -static int batadv_log_release(struct inode *inode, struct file *file) -{ - module_put(THIS_MODULE); - return 0; -} - -static bool batadv_log_empty(struct batadv_priv_debug_log *debug_log) -{ - return !(debug_log->log_start - debug_log->log_end); -} - -static ssize_t batadv_log_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct batadv_priv *bat_priv = file->private_data; - struct batadv_priv_debug_log *debug_log = bat_priv->debug_log; - int error, i = 0; - char *char_addr; - char c; - - if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log)) - return -EAGAIN; - - if (!buf) - return -EINVAL; - - if (count == 0) - return 0; - - if (!access_ok(buf, count)) - return -EFAULT; - - error = wait_event_interruptible(debug_log->queue_wait, - (!batadv_log_empty(debug_log))); - - if (error) - return error; - - spin_lock_bh(&debug_log->lock); - - while ((!error) && (i < count) && - (debug_log->log_start != debug_log->log_end)) { - char_addr = batadv_log_char_addr(debug_log, - debug_log->log_start); - c = *char_addr; - - debug_log->log_start++; - - spin_unlock_bh(&debug_log->lock); - - error = __put_user(c, buf); - - spin_lock_bh(&debug_log->lock); - - buf++; - i++; - } - - spin_unlock_bh(&debug_log->lock); - - if (!error) - return i; - - return error; -} - -static __poll_t batadv_log_poll(struct file *file, poll_table *wait) -{ - struct batadv_priv *bat_priv = file->private_data; - struct batadv_priv_debug_log *debug_log = bat_priv->debug_log; - - poll_wait(file, &debug_log->queue_wait, wait); - - if (!batadv_log_empty(debug_log)) - return EPOLLIN | EPOLLRDNORM; - - return 0; -} - -static const struct file_operations batadv_log_fops = { - .open = batadv_log_open, - .release = batadv_log_release, - .read = batadv_log_read, - .poll = batadv_log_poll, - .llseek = no_llseek, -}; - -/** - * batadv_debug_log_setup() - Initialize debug log - * @bat_priv: the bat priv with all the soft interface information - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_debug_log_setup(struct batadv_priv *bat_priv) -{ - bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC); - if (!bat_priv->debug_log) - return -ENOMEM; - - spin_lock_init(&bat_priv->debug_log->lock); - init_waitqueue_head(&bat_priv->debug_log->queue_wait); - - debugfs_create_file("log", 0400, bat_priv->debug_dir, bat_priv, - &batadv_log_fops); - return 0; -} - -/** - * batadv_debug_log_cleanup() - Destroy debug log - * @bat_priv: the bat priv with all the soft interface information - */ -void batadv_debug_log_cleanup(struct batadv_priv *bat_priv) -{ - kfree(bat_priv->debug_log); - bat_priv->debug_log = NULL; -} - -#endif /* CONFIG_BATMAN_ADV_DEBUGFS */ - /** * batadv_debug_log() - Add debug log entry * @bat_priv: the bat priv with all the soft interface information @@ -231,11 +28,6 @@ int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) vaf.fmt = fmt; vaf.va = &args; -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - batadv_fdebug_log(bat_priv->debug_log, "[%10u] %pV", - jiffies_to_msecs(jiffies), &vaf); -#endif - trace_batadv_dbg(bat_priv, &vaf); va_end(args); diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h index f9884dc56cf3..6717c965f0fa 100644 --- a/net/batman-adv/log.h +++ b/net/batman-adv/log.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -69,7 +69,7 @@ int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) __printf(2, 3); /** - * _batadv_dbg() - Store debug output with(out) ratelimiting + * _batadv_dbg() - Store debug output with(out) rate limiting * @type: type of debug message * @bat_priv: the bat priv with all the soft interface information * @ratelimited: whether output should be rate limited @@ -95,7 +95,7 @@ static inline void _batadv_dbg(int type __always_unused, #endif /** - * batadv_dbg() - Store debug output without ratelimiting + * batadv_dbg() - Store debug output without rate limiting * @type: type of debug message * @bat_priv: the bat priv with all the soft interface information * @arg: format string and variable arguments @@ -104,7 +104,7 @@ static inline void _batadv_dbg(int type __always_unused, _batadv_dbg(type, bat_priv, 0, ## arg) /** - * batadv_dbg_ratelimited() - Store debug output with ratelimiting + * batadv_dbg_ratelimited() - Store debug output with rate limiting * @type: type of debug message * @bat_priv: the bat priv with all the soft interface information * @arg: format string and variable arguments diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index d8a255c85e77..e8a449915566 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -9,6 +9,7 @@ #include <linux/atomic.h> #include <linux/build_bug.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/crc32c.h> #include <linux/device.h> #include <linux/errno.h> @@ -23,12 +24,12 @@ #include <linux/kobject.h> #include <linux/kref.h> #include <linux/list.h> +#include <linux/minmax.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/printk.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -44,12 +45,10 @@ #include "bat_iv_ogm.h" #include "bat_v.h" #include "bridge_loop_avoidance.h" -#include "debugfs.h" #include "distributed-arp-table.h" #include "gateway_client.h" #include "gateway_common.h" #include "hard-interface.h" -#include "icmp_socket.h" #include "log.h" #include "multicast.h" #include "netlink.h" @@ -113,9 +112,6 @@ static int __init batadv_init(void) if (!batadv_event_workqueue) goto err_create_wq; - batadv_socket_init(); - batadv_debugfs_init(); - register_netdevice_notifier(&batadv_hard_if_notifier); rtnl_link_register(&batadv_link_ops); batadv_netlink_register(); @@ -133,13 +129,10 @@ err_create_wq: static void __exit batadv_exit(void) { - batadv_debugfs_destroy(); batadv_netlink_unregister(); rtnl_link_unregister(&batadv_link_ops); unregister_netdevice_notifier(&batadv_hard_if_notifier); - batadv_hardif_remove_interfaces(); - flush_workqueue(batadv_event_workqueue); destroy_workqueue(batadv_event_workqueue); batadv_event_workqueue = NULL; @@ -197,29 +190,41 @@ int batadv_mesh_init(struct net_device *soft_iface) bat_priv->gw.generation = 0; - ret = batadv_v_mesh_init(bat_priv); - if (ret < 0) - goto err; - ret = batadv_originator_init(bat_priv); - if (ret < 0) - goto err; + if (ret < 0) { + atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); + goto err_orig; + } ret = batadv_tt_init(bat_priv); - if (ret < 0) - goto err; + if (ret < 0) { + atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); + goto err_tt; + } + + ret = batadv_v_mesh_init(bat_priv); + if (ret < 0) { + atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); + goto err_v; + } ret = batadv_bla_init(bat_priv); - if (ret < 0) - goto err; + if (ret < 0) { + atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); + goto err_bla; + } ret = batadv_dat_init(bat_priv); - if (ret < 0) - goto err; + if (ret < 0) { + atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); + goto err_dat; + } ret = batadv_nc_mesh_init(bat_priv); - if (ret < 0) - goto err; + if (ret < 0) { + atomic_set(&bat_priv->mesh_state, BATADV_MESH_DEACTIVATING); + goto err_nc; + } batadv_gw_init(bat_priv); batadv_mcast_init(bat_priv); @@ -229,8 +234,20 @@ int batadv_mesh_init(struct net_device *soft_iface) return 0; -err: - batadv_mesh_free(soft_iface); +err_nc: + batadv_dat_free(bat_priv); +err_dat: + batadv_bla_free(bat_priv); +err_bla: + batadv_v_mesh_free(bat_priv); +err_v: + batadv_tt_free(bat_priv); +err_tt: + batadv_originator_free(bat_priv); +err_orig: + batadv_purge_outstanding_packets(bat_priv, NULL); + atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); + return ret; } @@ -306,44 +323,6 @@ bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr) return is_my_mac; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_seq_print_text_primary_if_get() - called from debugfs table printing - * function that requires the primary interface - * @seq: debugfs table seq_file struct - * - * Return: primary interface if found or NULL otherwise. - */ -struct batadv_hard_iface * -batadv_seq_print_text_primary_if_get(struct seq_file *seq) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hard_iface *primary_if; - - primary_if = batadv_primary_if_get_selected(bat_priv); - - if (!primary_if) { - seq_printf(seq, - "BATMAN mesh %s disabled - please specify interfaces to enable it\n", - net_dev->name); - goto out; - } - - if (primary_if->if_status == BATADV_IF_ACTIVE) - goto out; - - seq_printf(seq, - "BATMAN mesh %s disabled - primary interface not active\n", - net_dev->name); - batadv_hardif_put(primary_if); - primary_if = NULL; - -out: - return primary_if; -} -#endif - /** * batadv_max_header_len() - calculate maximum encapsulation overhead for a * payload packet @@ -666,7 +645,7 @@ unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len) * @vid: the VLAN identifier for which the AP isolation attributed as to be * looked up * - * Return: true if AP isolation is on for the VLAN idenfied by vid, false + * Return: true if AP isolation is on for the VLAN identified by vid, false * otherwise */ bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid) @@ -747,7 +726,6 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR(BATADV_DRIVER_AUTHOR); MODULE_DESCRIPTION(BATADV_DRIVER_DESC); -MODULE_SUPPORTED_DEVICE(BATADV_DRIVER_DEVICE); MODULE_VERSION(BATADV_SOURCE_VERSION); MODULE_ALIAS_RTNL_LINK("batadv"); MODULE_ALIAS_GENL_FAMILY(BATADV_NL_NAME); diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 692306df7b6f..c48803b32bb0 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -13,7 +13,7 @@ #define BATADV_DRIVER_DEVICE "batman-adv" #ifndef BATADV_SOURCE_VERSION -#define BATADV_SOURCE_VERSION "2020.0" +#define BATADV_SOURCE_VERSION "2022.3" #endif /* B.A.T.M.A.N. parameters */ @@ -88,7 +88,6 @@ /* number of packets to send for broadcasts on different interface types */ #define BATADV_NUM_BCASTS_DEFAULT 1 #define BATADV_NUM_BCASTS_WIRELESS 3 -#define BATADV_NUM_BCASTS_MAX 3 /* length of the single packet used by the TP meter */ #define BATADV_TP_PACKET_LEN ETH_DATA_LEN @@ -212,7 +211,6 @@ enum batadv_uev_type { #include <linux/jiffies.h> #include <linux/netdevice.h> #include <linux/percpu.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> #include <uapi/linux/batadv_packet.h> @@ -243,8 +241,6 @@ extern struct workqueue_struct *batadv_event_workqueue; int batadv_mesh_init(struct net_device *soft_iface); void batadv_mesh_free(struct net_device *soft_iface); bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr); -struct batadv_hard_iface * -batadv_seq_print_text_primary_if_get(struct seq_file *seq); int batadv_max_header_len(void); void batadv_skb_set_priority(struct sk_buff *skb, int offset); int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, @@ -308,7 +304,7 @@ static inline bool batadv_has_timed_out(unsigned long timestamp, * @y: value to compare @x against * * It handles overflows/underflows and can correctly check for a predecessor - * unless the variable sequence number has grown by more then + * unless the variable sequence number has grown by more than * 2**(bitwidth(x)-1)-1. * * This means that for a u8 with the maximum value 255, it would think: @@ -330,11 +326,11 @@ static inline bool batadv_has_timed_out(unsigned long timestamp, /** * batadv_seq_after() - Checks if a sequence number x is a successor of y - * @x: potential sucessor of @y + * @x: potential successor of @y * @y: value to compare @x against * * It handles overflows/underflows and can correctly check for a successor - * unless the variable sequence number has grown by more then + * unless the variable sequence number has grown by more than * 2**(bitwidth(x)-1)-1. * * This means that for a u8 with the maximum value 255, it would think: diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index 9ebdc1e864b9..b238455913df 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2014-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Linus Lüssing */ @@ -11,6 +11,7 @@ #include <linux/bitops.h> #include <linux/bug.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -33,7 +34,6 @@ #include <linux/printk.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -51,6 +51,7 @@ #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> +#include "bridge_loop_avoidance.h" #include "hard-interface.h" #include "hash.h" #include "log.h" @@ -89,10 +90,9 @@ static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) rcu_read_lock(); do { upper = netdev_master_upper_dev_get_rcu(upper); - } while (upper && !(upper->priv_flags & IFF_EBRIDGE)); + } while (upper && !netif_is_bridge_master(upper)); - if (upper) - dev_hold(upper); + dev_hold(upper); rcu_read_unlock(); return upper; @@ -135,7 +135,7 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get_ipv6(struct net_device *dev) { struct inet6_dev *in6_dev = __in6_dev_get(dev); - if (in6_dev && in6_dev->cnf.mc_forwarding) + if (in6_dev && atomic_read(&in6_dev->cnf.mc_forwarding)) return BATADV_NO_FLAGS; else return BATADV_MCAST_WANT_NO_RTR6; @@ -193,53 +193,22 @@ static u8 batadv_mcast_mla_rtr_flags_softif_get(struct batadv_priv *bat_priv, * BATADV_MCAST_WANT_NO_RTR6: No IPv6 multicast router is present * The former two OR'd: no multicast router is present */ -#if IS_ENABLED(CONFIG_IPV6) static u8 batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv, struct net_device *bridge) { - struct list_head bridge_mcast_list = LIST_HEAD_INIT(bridge_mcast_list); struct net_device *dev = bat_priv->soft_iface; - struct br_ip_list *br_ip_entry, *tmp; - u8 flags = BATADV_MCAST_WANT_NO_RTR6; - int ret; + u8 flags = BATADV_NO_FLAGS; if (!bridge) return BATADV_MCAST_WANT_NO_RTR4 | BATADV_MCAST_WANT_NO_RTR6; - /* TODO: ask the bridge if a multicast router is present (the bridge - * is capable of performing proper RFC4286 multicast multicast router - * discovery) instead of searching for a ff02::2 listener here - */ - ret = br_multicast_list_adjacent(dev, &bridge_mcast_list); - if (ret < 0) - return BATADV_NO_FLAGS; - - list_for_each_entry_safe(br_ip_entry, tmp, &bridge_mcast_list, list) { - /* the bridge snooping does not maintain IPv4 link-local - * addresses - therefore we won't find any IPv4 multicast router - * address here, only IPv6 ones - */ - if (br_ip_entry->addr.proto == htons(ETH_P_IPV6) && - ipv6_addr_is_ll_all_routers(&br_ip_entry->addr.u.ip6)) - flags &= ~BATADV_MCAST_WANT_NO_RTR6; - - list_del(&br_ip_entry->list); - kfree(br_ip_entry); - } + if (!br_multicast_has_router_adjacent(dev, ETH_P_IP)) + flags |= BATADV_MCAST_WANT_NO_RTR4; + if (!br_multicast_has_router_adjacent(dev, ETH_P_IPV6)) + flags |= BATADV_MCAST_WANT_NO_RTR6; return flags; } -#else -static inline u8 -batadv_mcast_mla_rtr_flags_bridge_get(struct batadv_priv *bat_priv, - struct net_device *bridge) -{ - if (bridge) - return BATADV_NO_FLAGS; - else - return BATADV_MCAST_WANT_NO_RTR4 | BATADV_MCAST_WANT_NO_RTR6; -} -#endif /** * batadv_mcast_mla_rtr_flags_get() - get multicast router flags @@ -454,8 +423,9 @@ batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, return 0; } - read_lock_bh(&in6_dev->lock); - for (pmc6 = in6_dev->mc_list; pmc6; pmc6 = pmc6->next) { + for (pmc6 = rcu_dereference(in6_dev->mc_list); + pmc6; + pmc6 = rcu_dereference(pmc6->next)) { if (IPV6_ADDR_MC_SCOPE(&pmc6->mca_addr) < IPV6_ADDR_SCOPE_LINKLOCAL) continue; @@ -484,7 +454,6 @@ batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, hlist_add_head(&new->list, mcast_list); ret++; } - read_unlock_bh(&in6_dev->lock); rcu_read_unlock(); return ret; @@ -510,7 +479,7 @@ batadv_mcast_mla_softif_get_ipv6(struct net_device *dev, * the given mcast_list. In general, multicast listeners provided by * your multicast receiving applications run directly on this node. * - * If there is a bridge interface on top of dev, collects from that one + * If there is a bridge interface on top of dev, collect from that one * instead. Just like with IP addresses and routes, multicast listeners * will(/should) register to the bridge interface instead of an * enslaved bat0. @@ -540,8 +509,7 @@ batadv_mcast_mla_softif_get(struct net_device *dev, } out: - if (bridge) - dev_put(bridge); + dev_put(bridge); return ret4 + ret6; } @@ -561,10 +529,10 @@ out: static void batadv_mcast_mla_br_addr_cpy(char *dst, const struct br_ip *src) { if (src->proto == htons(ETH_P_IP)) - ip_eth_mc_map(src->u.ip4, dst); + ip_eth_mc_map(src->dst.ip4, dst); #if IS_ENABLED(CONFIG_IPV6) else if (src->proto == htons(ETH_P_IPV6)) - ipv6_eth_mc_map(&src->u.ip6, dst); + ipv6_eth_mc_map(&src->dst.ip6, dst); #endif else eth_zero_addr(dst); @@ -608,11 +576,11 @@ static int batadv_mcast_mla_bridge_get(struct net_device *dev, continue; if (tvlv_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES && - ipv4_is_local_multicast(br_ip_entry->addr.u.ip4)) + ipv4_is_local_multicast(br_ip_entry->addr.dst.ip4)) continue; if (!(tvlv_flags & BATADV_MCAST_WANT_NO_RTR4) && - !ipv4_is_local_multicast(br_ip_entry->addr.u.ip4)) + !ipv4_is_local_multicast(br_ip_entry->addr.dst.ip4)) continue; } @@ -622,11 +590,11 @@ static int batadv_mcast_mla_bridge_get(struct net_device *dev, continue; if (tvlv_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES && - ipv6_addr_is_ll_all_nodes(&br_ip_entry->addr.u.ip6)) + ipv6_addr_is_ll_all_nodes(&br_ip_entry->addr.dst.ip6)) continue; if (!(tvlv_flags & BATADV_MCAST_WANT_NO_RTR6) && - IPV6_ADDR_MC_SCOPE(&br_ip_entry->addr.u.ip6) > + IPV6_ADDR_MC_SCOPE(&br_ip_entry->addr.dst.ip6) > IPV6_ADDR_SCOPE_LINKLOCAL) continue; } @@ -828,12 +796,12 @@ batadv_mcast_bridge_log(struct batadv_priv *bat_priv, } /** - * batadv_mcast_flags_logs() - output debug information about mcast flag changes + * batadv_mcast_flags_log() - output debug information about mcast flag changes * @bat_priv: the bat priv with all the soft interface information * @flags: TVLV flags indicating the new multicast state * - * Whenever the multicast TVLV flags this nodes announces change this notifies - * userspace via the 'mcast' log level. + * Whenever the multicast TVLV flags this node announces change, this function + * should be used to notify userspace about the change. */ static void batadv_mcast_flags_log(struct batadv_priv *bat_priv, u8 flags) { @@ -1244,7 +1212,7 @@ batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv) * @ethhdr: an ethernet header to determine the protocol family from * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 or - * BATADV_MCAST_WANT_ALL_IPV6 flag, depending on the provided ethhdr, set and + * BATADV_MCAST_WANT_ALL_IPV6 flag, depending on the provided ethhdr, sets and * increases its refcount. */ static struct batadv_orig_node * @@ -1372,6 +1340,7 @@ batadv_mcast_forw_rtr_node_get(struct batadv_priv *bat_priv, * @bat_priv: the bat priv with all the soft interface information * @skb: The multicast packet to check * @orig: an originator to be set to forward the skb to + * @is_routable: stores whether the destination is routable * * Return: the forwarding mode as enum batadv_forw_mode and in case of * BATADV_FORW_SINGLE set the orig to the single originator the skb @@ -1379,17 +1348,16 @@ batadv_mcast_forw_rtr_node_get(struct batadv_priv *bat_priv, */ enum batadv_forw_mode batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, - struct batadv_orig_node **orig) + struct batadv_orig_node **orig, int *is_routable) { int ret, tt_count, ip_count, unsnoop_count, total_count; bool is_unsnoopable = false; unsigned int mcast_fanout; struct ethhdr *ethhdr; - int is_routable = 0; int rtr_count = 0; ret = batadv_mcast_forw_mode_check(bat_priv, skb, &is_unsnoopable, - &is_routable); + is_routable); if (ret == -ENOMEM) return BATADV_FORW_NONE; else if (ret < 0) @@ -1402,7 +1370,7 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, ip_count = batadv_mcast_forw_want_all_ip_count(bat_priv, ethhdr); unsnoop_count = !is_unsnoopable ? 0 : atomic_read(&bat_priv->mcast.num_want_all_unsnoopables); - rtr_count = batadv_mcast_forw_rtr_count(bat_priv, is_routable); + rtr_count = batadv_mcast_forw_rtr_count(bat_priv, *is_routable); total_count = tt_count + ip_count + unsnoop_count + rtr_count; @@ -1435,6 +1403,35 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, } /** + * batadv_mcast_forw_send_orig() - send a multicast packet to an originator + * @bat_priv: the bat priv with all the soft interface information + * @skb: the multicast packet to send + * @vid: the vlan identifier + * @orig_node: the originator to send the packet to + * + * Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise. + */ +int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned short vid, + struct batadv_orig_node *orig_node) +{ + /* Avoid sending multicast-in-unicast packets to other BLA + * gateways - they already got the frame from the LAN side + * we share with them. + * TODO: Refactor to take BLA into account earlier, to avoid + * reducing the mcast_fanout count. + */ + if (batadv_bla_is_backbone_gw_orig(bat_priv, orig_node->orig, vid)) { + dev_kfree_skb(skb); + return NET_XMIT_SUCCESS; + } + + return batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST, 0, + orig_node, vid); +} + +/** * batadv_mcast_forw_tt() - forwards a packet to multicast listeners * @bat_priv: the bat priv with all the soft interface information * @skb: the multicast packet to transmit @@ -1471,8 +1468,8 @@ batadv_mcast_forw_tt(struct batadv_priv *bat_priv, struct sk_buff *skb, break; } - batadv_send_skb_unicast(bat_priv, newskb, BATADV_UNICAST, 0, - orig_entry->orig_node, vid); + batadv_mcast_forw_send_orig(bat_priv, newskb, vid, + orig_entry->orig_node); } rcu_read_unlock(); @@ -1513,8 +1510,7 @@ batadv_mcast_forw_want_all_ipv4(struct batadv_priv *bat_priv, break; } - batadv_send_skb_unicast(bat_priv, newskb, BATADV_UNICAST, 0, - orig_node, vid); + batadv_mcast_forw_send_orig(bat_priv, newskb, vid, orig_node); } rcu_read_unlock(); return ret; @@ -1551,8 +1547,7 @@ batadv_mcast_forw_want_all_ipv6(struct batadv_priv *bat_priv, break; } - batadv_send_skb_unicast(bat_priv, newskb, BATADV_UNICAST, 0, - orig_node, vid); + batadv_mcast_forw_send_orig(bat_priv, newskb, vid, orig_node); } rcu_read_unlock(); return ret; @@ -1618,8 +1613,7 @@ batadv_mcast_forw_want_all_rtr4(struct batadv_priv *bat_priv, break; } - batadv_send_skb_unicast(bat_priv, newskb, BATADV_UNICAST, 0, - orig_node, vid); + batadv_mcast_forw_send_orig(bat_priv, newskb, vid, orig_node); } rcu_read_unlock(); return ret; @@ -1656,8 +1650,7 @@ batadv_mcast_forw_want_all_rtr6(struct batadv_priv *bat_priv, break; } - batadv_send_skb_unicast(bat_priv, newskb, BATADV_UNICAST, 0, - orig_node, vid); + batadv_mcast_forw_send_orig(bat_priv, newskb, vid, orig_node); } rcu_read_unlock(); return ret; @@ -1693,10 +1686,11 @@ batadv_mcast_forw_want_rtr(struct batadv_priv *bat_priv, } /** - * batadv_mcast_forw_send() - send packet to any detected multicast recpient + * batadv_mcast_forw_send() - send packet to any detected multicast recipient * @bat_priv: the bat priv with all the soft interface information * @skb: the multicast packet to transmit * @vid: the vlan identifier + * @is_routable: stores whether the destination is routable * * Sends copies of a frame with multicast destination to any node that signaled * interest in it, that is either via the translation table or the according @@ -1709,7 +1703,7 @@ batadv_mcast_forw_want_rtr(struct batadv_priv *bat_priv, * is neither IPv4 nor IPv6. NET_XMIT_SUCCESS otherwise. */ int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, - unsigned short vid) + unsigned short vid, int is_routable) { int ret; @@ -1725,12 +1719,16 @@ int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, return ret; } + if (!is_routable) + goto skip_mc_router; + ret = batadv_mcast_forw_want_rtr(bat_priv, skb, vid); if (ret != NET_XMIT_SUCCESS) { kfree_skb(skb); return ret; } +skip_mc_router: consume_skb(skb); return ret; } @@ -1742,7 +1740,8 @@ int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, * @mcast_flags: flags indicating the new multicast state * * If the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag of this originator, - * orig, has toggled then this method updates counter and list accordingly. + * orig, has toggled then this method updates the counter and the list + * accordingly. * * Caller needs to hold orig->mcast_handler_lock. */ @@ -1787,7 +1786,7 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv, * @mcast_flags: flags indicating the new multicast state * * If the BATADV_MCAST_WANT_ALL_IPV4 flag of this originator, orig, has - * toggled then this method updates counter and list accordingly. + * toggled then this method updates the counter and the list accordingly. * * Caller needs to hold orig->mcast_handler_lock. */ @@ -1832,7 +1831,7 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv, * @mcast_flags: flags indicating the new multicast state * * If the BATADV_MCAST_WANT_ALL_IPV6 flag of this originator, orig, has - * toggled then this method updates counter and list accordingly. + * toggled then this method updates the counter and the list accordingly. * * Caller needs to hold orig->mcast_handler_lock. */ @@ -1877,7 +1876,7 @@ static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv, * @mcast_flags: flags indicating the new multicast state * * If the BATADV_MCAST_WANT_NO_RTR4 flag of this originator, orig, has - * toggled then this method updates counter and list accordingly. + * toggled then this method updates the counter and the list accordingly. * * Caller needs to hold orig->mcast_handler_lock. */ @@ -1922,7 +1921,7 @@ static void batadv_mcast_want_rtr4_update(struct batadv_priv *bat_priv, * @mcast_flags: flags indicating the new multicast state * * If the BATADV_MCAST_WANT_NO_RTR6 flag of this originator, orig, has - * toggled then this method updates counter and list accordingly. + * toggled then this method updates the counter and the list accordingly. * * Caller needs to hold orig->mcast_handler_lock. */ @@ -2047,116 +2046,6 @@ void batadv_mcast_init(struct batadv_priv *bat_priv) batadv_mcast_start_timer(bat_priv); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_mcast_flags_print_header() - print own mcast flags to debugfs table - * @bat_priv: the bat priv with all the soft interface information - * @seq: debugfs table seq_file struct - * - * Prints our own multicast flags including a more specific reason why - * they are set, that is prints the bridge and querier state too, to - * the debugfs table specified via @seq. - */ -static void batadv_mcast_flags_print_header(struct batadv_priv *bat_priv, - struct seq_file *seq) -{ - struct batadv_mcast_mla_flags *mla_flags = &bat_priv->mcast.mla_flags; - char querier4, querier6, shadowing4, shadowing6; - bool bridged = mla_flags->bridged; - u8 flags = mla_flags->tvlv_flags; - - if (bridged) { - querier4 = mla_flags->querier_ipv4.exists ? '.' : '4'; - querier6 = mla_flags->querier_ipv6.exists ? '.' : '6'; - shadowing4 = mla_flags->querier_ipv4.shadowing ? '4' : '.'; - shadowing6 = mla_flags->querier_ipv6.shadowing ? '6' : '.'; - } else { - querier4 = '?'; - querier6 = '?'; - shadowing4 = '?'; - shadowing6 = '?'; - } - - seq_printf(seq, "Multicast flags (own flags: [%c%c%c%s%s])\n", - (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.', - (flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.', - (flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.', - !(flags & BATADV_MCAST_WANT_NO_RTR4) ? "R4" : ". ", - !(flags & BATADV_MCAST_WANT_NO_RTR6) ? "R6" : ". "); - seq_printf(seq, "* Bridged [U]\t\t\t\t%c\n", bridged ? 'U' : '.'); - seq_printf(seq, "* No IGMP/MLD Querier [4/6]:\t\t%c/%c\n", - querier4, querier6); - seq_printf(seq, "* Shadowing IGMP/MLD Querier [4/6]:\t%c/%c\n", - shadowing4, shadowing6); - seq_puts(seq, "-------------------------------------------\n"); - seq_printf(seq, " %-10s %s\n", "Originator", "Flags"); -} - -/** - * batadv_mcast_flags_seq_print_text() - print the mcast flags of other nodes - * @seq: seq file to print on - * @offset: not used - * - * This prints a table of (primary) originators and their according - * multicast flags, including (in the header) our own. - * - * Return: always 0 - */ -int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hard_iface *primary_if; - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct batadv_orig_node *orig_node; - struct hlist_head *head; - u8 flags; - u32 i; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - return 0; - - batadv_mcast_flags_print_header(bat_priv, seq); - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST, - &orig_node->capa_initialized)) - continue; - - if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST, - &orig_node->capabilities)) { - seq_printf(seq, "%pM -\n", orig_node->orig); - continue; - } - - flags = orig_node->mcast_flags; - - seq_printf(seq, "%pM [%c%c%c%s%s]\n", orig_node->orig, - (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) - ? 'U' : '.', - (flags & BATADV_MCAST_WANT_ALL_IPV4) - ? '4' : '.', - (flags & BATADV_MCAST_WANT_ALL_IPV6) - ? '6' : '.', - !(flags & BATADV_MCAST_WANT_NO_RTR4) - ? "R4" : ". ", - !(flags & BATADV_MCAST_WANT_NO_RTR6) - ? "R6" : ". "); - } - rcu_read_unlock(); - } - - batadv_hardif_put(primary_if); - - return 0; -} -#endif - /** * batadv_mcast_mesh_info_put() - put multicast info into a netlink message * @msg: buffer for the message @@ -2354,12 +2243,11 @@ batadv_mcast_netlink_get_primary(struct netlink_callback *cb, } out: - if (soft_iface) - dev_put(soft_iface); + dev_put(soft_iface); if (!ret && primary_if) *primary_if = hard_iface; - else if (hard_iface) + else batadv_hardif_put(hard_iface); return ret; diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h index ebf825991ecd..8aec818d0bf6 100644 --- a/net/batman-adv/multicast.h +++ b/net/batman-adv/multicast.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2014-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Linus Lüssing */ @@ -10,7 +10,6 @@ #include "main.h" #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> /** @@ -44,15 +43,19 @@ enum batadv_forw_mode { enum batadv_forw_mode batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, - struct batadv_orig_node **mcast_single_orig); + struct batadv_orig_node **mcast_single_orig, + int *is_routable); + +int batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned short vid, + struct batadv_orig_node *orig_node); int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, - unsigned short vid); + unsigned short vid, int is_routable); void batadv_mcast_init(struct batadv_priv *bat_priv); -int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset); - int batadv_mcast_mesh_info_put(struct sk_buff *msg, struct batadv_priv *bat_priv); @@ -66,14 +69,25 @@ void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node); static inline enum batadv_forw_mode batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, - struct batadv_orig_node **mcast_single_orig) + struct batadv_orig_node **mcast_single_orig, + int *is_routable) { return BATADV_FORW_ALL; } static inline int +batadv_mcast_forw_send_orig(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned short vid, + struct batadv_orig_node *orig_node) +{ + kfree_skb(skb); + return NET_XMIT_DROP; +} + +static inline int batadv_mcast_forw_send(struct batadv_priv *bat_priv, struct sk_buff *skb, - unsigned short vid) + unsigned short vid, int is_routable) { kfree_skb(skb); return NET_XMIT_DROP; diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 02ed073f95a9..a5e4a4e976cf 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2016-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Matthias Schiffer */ @@ -23,6 +23,7 @@ #include <linux/kernel.h> #include <linux/limits.h> #include <linux/list.h> +#include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/printk.h> @@ -192,7 +193,7 @@ static int batadv_netlink_mesh_fill_ap_isolation(struct sk_buff *msg, } /** - * batadv_option_set_ap_isolation() - Set ap_isolation from genl msg + * batadv_netlink_set_mesh_ap_isolation() - Set ap_isolation from genl msg * @attr: parsed BATADV_ATTR_AP_ISOLATION_ENABLED attribute * @bat_priv: the bat priv with all the soft interface information * @@ -358,15 +359,13 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, atomic_read(&bat_priv->orig_interval))) goto nla_put_failure; - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); genlmsg_end(msg, hdr); return 0; nla_put_failure: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); genlmsg_cancel(msg, hdr); return -EMSGSIZE; @@ -640,7 +639,7 @@ batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie) * @bat_priv: the bat priv with all the soft interface information * @dst: destination of tp_meter session * @result: reason for tp meter session stop - * @test_time: total time ot the tp_meter session + * @test_time: total time of the tp_meter session * @total_bytes: bytes acked to the receiver * @cookie: cookie of tp_meter session * @@ -756,7 +755,7 @@ batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info) } /** - * batadv_netlink_tp_meter_start() - Cancel a running tp_meter session + * batadv_netlink_tp_meter_cancel() - Cancel a running tp_meter session * @skb: received netlink message * @info: receiver information * @@ -813,6 +812,10 @@ static int batadv_netlink_hardif_fill(struct sk_buff *msg, bat_priv->soft_iface->ifindex)) goto nla_put_failure; + if (nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, + bat_priv->soft_iface->name)) + goto nla_put_failure; + if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX, net_dev->ifindex) || nla_put_string(msg, BATADV_ATTR_HARD_IFNAME, @@ -826,6 +829,10 @@ static int batadv_netlink_hardif_fill(struct sk_buff *msg, goto nla_put_failure; } + if (nla_put_u8(msg, BATADV_ATTR_HOP_PENALTY, + atomic_read(&hard_iface->hop_penalty))) + goto nla_put_failure; + #ifdef CONFIG_BATMAN_ADV_BATMAN_V if (nla_put_u32(msg, BATADV_ATTR_ELP_INTERVAL, atomic_read(&hard_iface->bat_v.elp_interval))) @@ -920,9 +927,15 @@ static int batadv_netlink_set_hardif(struct sk_buff *skb, { struct batadv_hard_iface *hard_iface = info->user_ptr[1]; struct batadv_priv *bat_priv = info->user_ptr[0]; + struct nlattr *attr; + + if (info->attrs[BATADV_ATTR_HOP_PENALTY]) { + attr = info->attrs[BATADV_ATTR_HOP_PENALTY]; + + atomic_set(&hard_iface->hop_penalty, nla_get_u8(attr)); + } #ifdef CONFIG_BATMAN_ADV_BATMAN_V - struct nlattr *attr; if (info->attrs[BATADV_ATTR_ELP_INTERVAL]) { attr = info->attrs[BATADV_ATTR_ELP_INTERVAL]; @@ -1034,6 +1047,10 @@ static int batadv_netlink_vlan_fill(struct sk_buff *msg, bat_priv->soft_iface->ifindex)) goto nla_put_failure; + if (nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, + bat_priv->soft_iface->name)) + goto nla_put_failure; + if (nla_put_u32(msg, BATADV_ATTR_VLANID, vlan->vid & VLAN_VID_MASK)) goto nla_put_failure; @@ -1340,7 +1357,7 @@ static void batadv_post_doit(const struct genl_ops *ops, struct sk_buff *skb, } } -static const struct genl_ops batadv_netlink_ops[] = { +static const struct genl_small_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_GET_MESH, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, @@ -1351,21 +1368,21 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_TP_METER, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_tp_meter_start, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_TP_METER_CANCEL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_tp_meter_cancel, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_GET_ROUTING_ALGOS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_algo_dump, }, { @@ -1380,68 +1397,68 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_tt_local_dump, }, { .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_tt_global_dump, }, { .cmd = BATADV_CMD_GET_ORIGINATORS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_orig_dump, }, { .cmd = BATADV_CMD_GET_NEIGHBORS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_hardif_neigh_dump, }, { .cmd = BATADV_CMD_GET_GATEWAYS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_gw_dump, }, { .cmd = BATADV_CMD_GET_BLA_CLAIM, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_bla_claim_dump, }, { .cmd = BATADV_CMD_GET_BLA_BACKBONE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_bla_backbone_dump, }, { .cmd = BATADV_CMD_GET_DAT_CACHE, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_dat_cache_dump, }, { .cmd = BATADV_CMD_GET_MCAST_FLAGS, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .dumpit = batadv_mcast_flags_dump, }, { .cmd = BATADV_CMD_SET_MESH, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_set_mesh, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_SET_HARDIF, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_set_hardif, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_HARDIF, @@ -1457,7 +1474,7 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_SET_VLAN, .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, - .flags = GENL_ADMIN_PERM, + .flags = GENL_UNS_ADMIN_PERM, .doit = batadv_netlink_set_vlan, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_VLAN, @@ -1474,8 +1491,9 @@ struct genl_family batadv_netlink_family __ro_after_init = { .pre_doit = batadv_pre_doit, .post_doit = batadv_post_doit, .module = THIS_MODULE, - .ops = batadv_netlink_ops, - .n_ops = ARRAY_SIZE(batadv_netlink_ops), + .small_ops = batadv_netlink_ops, + .n_small_ops = ARRAY_SIZE(batadv_netlink_ops), + .resv_start_op = BATADV_CMD_SET_VLAN + 1, .mcgrps = batadv_netlink_mcgrps, .n_mcgrps = ARRAY_SIZE(batadv_netlink_mcgrps), }; diff --git a/net/batman-adv/netlink.h b/net/batman-adv/netlink.h index 7ee48f916997..48102cc7490c 100644 --- a/net/batman-adv/netlink.h +++ b/net/batman-adv/netlink.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2016-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Matthias Schiffer */ diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index 8f0717c3f7b5..5f4aeeb60dc4 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2012-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Martin Hundebøll, Jeppe Ledet-Pedersen */ @@ -11,7 +11,7 @@ #include <linux/bitops.h> #include <linux/byteorder/generic.h> #include <linux/compiler.h> -#include <linux/debugfs.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> @@ -20,17 +20,15 @@ #include <linux/init.h> #include <linux/jhash.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> #include <linux/net.h> #include <linux/netdevice.h> +#include <linux/prandom.h> #include <linux/printk.h> -#include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -39,7 +37,6 @@ #include <linux/workqueue.h> #include <uapi/linux/batadv_packet.h> -#include "hard-interface.h" #include "hash.h" #include "log.h" #include "originator.h" @@ -61,13 +58,9 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb, */ int __init batadv_nc_init(void) { - int ret; - /* Register our packet type */ - ret = batadv_recv_handler_register(BATADV_CODED, - batadv_nc_recv_coded_packet); - - return ret; + return batadv_recv_handler_register(BATADV_CODED, + batadv_nc_recv_coded_packet); } /** @@ -134,7 +127,7 @@ static void batadv_nc_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, } /** - * batadv_nc_mesh_init() - initialise coding hash table and start house keeping + * batadv_nc_mesh_init() - initialise coding hash table and start housekeeping * @bat_priv: the bat priv with all the soft interface information * * Return: 0 on success or negative error number in case of failure @@ -155,8 +148,10 @@ int batadv_nc_mesh_init(struct batadv_priv *bat_priv) &batadv_nc_coding_hash_lock_class_key); bat_priv->nc.decoding_hash = batadv_hash_new(128); - if (!bat_priv->nc.decoding_hash) + if (!bat_priv->nc.decoding_hash) { + batadv_hash_destroy(bat_priv->nc.coding_hash); goto err; + } batadv_hash_set_lock_class(bat_priv->nc.decoding_hash, &batadv_nc_decoding_hash_lock_class_key); @@ -220,6 +215,9 @@ static void batadv_nc_node_release(struct kref *ref) */ static void batadv_nc_node_put(struct batadv_nc_node *nc_node) { + if (!nc_node) + return; + kref_put(&nc_node->refcount, batadv_nc_node_release); } @@ -244,13 +242,16 @@ static void batadv_nc_path_release(struct kref *ref) */ static void batadv_nc_path_put(struct batadv_nc_path *nc_path) { + if (!nc_path) + return; + kref_put(&nc_path->refcount, batadv_nc_path_release); } /** * batadv_nc_packet_free() - frees nc packet * @nc_packet: the nc packet to free - * @dropped: whether the packet is freed because is is dropped + * @dropped: whether the packet is freed because is dropped */ static void batadv_nc_packet_free(struct batadv_nc_packet *nc_packet, bool dropped) @@ -700,7 +701,7 @@ batadv_nc_process_nc_paths(struct batadv_priv *bat_priv, } /** - * batadv_nc_worker() - periodic task for house keeping related to network + * batadv_nc_worker() - periodic task for housekeeping related to network * coding * @work: kernel work struct */ @@ -933,10 +934,8 @@ void batadv_nc_update_nc_node(struct batadv_priv *bat_priv, out_nc_node->last_seen = jiffies; out: - if (in_nc_node) - batadv_nc_node_put(in_nc_node); - if (out_nc_node) - batadv_nc_node_put(out_nc_node); + batadv_nc_node_put(in_nc_node); + batadv_nc_node_put(out_nc_node); } /** @@ -1009,15 +1008,8 @@ static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv, */ static u8 batadv_nc_random_weight_tq(u8 tq) { - u8 rand_val, rand_tq; - - get_random_bytes(&rand_val, sizeof(rand_val)); - /* randomize the estimated packet loss (max TQ - estimated TQ) */ - rand_tq = rand_val * (BATADV_TQ_MAX_VALUE - tq); - - /* normalize the randomized packet loss */ - rand_tq /= BATADV_TQ_MAX_VALUE; + u8 rand_tq = prandom_u32_max(BATADV_TQ_MAX_VALUE + 1 - tq); /* convert to (randomized) estimated tq again */ return BATADV_TQ_MAX_VALUE - rand_tq; @@ -1219,14 +1211,10 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv, batadv_send_unicast_skb(skb_dest, first_dest); res = true; out: - if (router_neigh) - batadv_neigh_node_put(router_neigh); - if (router_coding) - batadv_neigh_node_put(router_coding); - if (router_neigh_ifinfo) - batadv_neigh_ifinfo_put(router_neigh_ifinfo); - if (router_coding_ifinfo) - batadv_neigh_ifinfo_put(router_coding_ifinfo); + batadv_neigh_node_put(router_neigh); + batadv_neigh_node_put(router_coding); + batadv_neigh_ifinfo_put(router_neigh_ifinfo); + batadv_neigh_ifinfo_put(router_coding_ifinfo); return res; } @@ -1323,7 +1311,7 @@ batadv_nc_path_search(struct batadv_priv *bat_priv, } /** - * batadv_nc_skb_src_search() - Loops through the list of neighoring nodes of + * batadv_nc_skb_src_search() - Loops through the list of neighboring nodes of * the skb's sender (may be equal to the originator). * @bat_priv: the bat priv with all the soft interface information * @skb: data skb to forward @@ -1409,10 +1397,10 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv, * @neigh_node: next hop to forward packet to * @ethhdr: pointer to the ethernet header inside the skb * - * Loops through list of neighboring nodes the next hop has a good connection to - * (receives OGMs with a sufficient quality). We need to find a neighbor of our - * next hop that potentially sent a packet which our next hop also received - * (overheard) and has stored for later decoding. + * Loops through the list of neighboring nodes the next hop has a good + * connection to (receives OGMs with a sufficient quality). We need to find a + * neighbor of our next hop that potentially sent a packet which our next hop + * also received (overheard) and has stored for later decoding. * * Return: true if the skb was consumed (encoded packet sent) or false otherwise */ @@ -1883,87 +1871,3 @@ void batadv_nc_mesh_free(struct batadv_priv *bat_priv) batadv_nc_purge_paths(bat_priv, bat_priv->nc.decoding_hash, NULL); batadv_hash_destroy(bat_priv->nc.decoding_hash); } - -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_nc_nodes_seq_print_text() - print the nc node information - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - struct batadv_orig_node *orig_node; - struct batadv_nc_node *nc_node; - int i; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - goto out; - - /* Traverse list of originators */ - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - /* For each orig_node in this bin */ - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - /* no need to print the orig node if it does not have - * network coding neighbors - */ - if (list_empty(&orig_node->in_coding_list) && - list_empty(&orig_node->out_coding_list)) - continue; - - seq_printf(seq, "Node: %pM\n", orig_node->orig); - - seq_puts(seq, " Ingoing: "); - /* For each in_nc_node to this orig_node */ - list_for_each_entry_rcu(nc_node, - &orig_node->in_coding_list, - list) - seq_printf(seq, "%pM ", - nc_node->addr); - seq_puts(seq, "\n Outgoing: "); - /* For out_nc_node to this orig_node */ - list_for_each_entry_rcu(nc_node, - &orig_node->out_coding_list, - list) - seq_printf(seq, "%pM ", - nc_node->addr); - seq_puts(seq, "\n\n"); - } - rcu_read_unlock(); - } - -out: - if (primary_if) - batadv_hardif_put(primary_if); - return 0; -} - -/** - * batadv_nc_init_debugfs() - create nc folder and related files in debugfs - * @bat_priv: the bat priv with all the soft interface information - */ -void batadv_nc_init_debugfs(struct batadv_priv *bat_priv) -{ - struct dentry *nc_dir; - - nc_dir = debugfs_create_dir("nc", bat_priv->debug_dir); - - debugfs_create_u8("min_tq", 0644, nc_dir, &bat_priv->nc.min_tq); - - debugfs_create_u32("max_fwd_delay", 0644, nc_dir, - &bat_priv->nc.max_fwd_delay); - - debugfs_create_u32("max_buffer_time", 0644, nc_dir, - &bat_priv->nc.max_buffer_time); -} -#endif diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h index 334289084127..368cc3130e4c 100644 --- a/net/batman-adv/network-coding.h +++ b/net/batman-adv/network-coding.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2012-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Martin Hundebøll, Jeppe Ledet-Pedersen */ @@ -10,7 +10,6 @@ #include "main.h" #include <linux/netdevice.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> #include <uapi/linux/batadv_packet.h> @@ -38,8 +37,6 @@ void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv, struct sk_buff *skb); void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, struct sk_buff *skb); -int batadv_nc_nodes_seq_print_text(struct seq_file *seq, void *offset); -void batadv_nc_init_debugfs(struct batadv_priv *bat_priv); #else /* ifdef CONFIG_BATMAN_ADV_NC */ @@ -104,16 +101,6 @@ batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, { } -static inline int batadv_nc_nodes_seq_print_text(struct seq_file *seq, - void *offset) -{ - return 0; -} - -static inline void batadv_nc_init_debugfs(struct batadv_priv *bat_priv) -{ -} - #endif /* ifdef CONFIG_BATMAN_ADV_NC */ #endif /* _NET_BATMAN_ADV_NETWORK_CODING_H_ */ diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 5b0c2fffc214..34903df4fe93 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2009-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -8,11 +8,11 @@ #include "main.h" #include <linux/atomic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> @@ -20,7 +20,6 @@ #include <linux/netlink.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -178,7 +177,7 @@ out: * and queue for free after rcu grace period * @ref: kref pointer of the originator-vlan object */ -static void batadv_orig_node_vlan_release(struct kref *ref) +void batadv_orig_node_vlan_release(struct kref *ref) { struct batadv_orig_node_vlan *orig_vlan; @@ -188,16 +187,6 @@ static void batadv_orig_node_vlan_release(struct kref *ref) } /** - * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release - * the originator-vlan object - * @orig_vlan: the originator-vlan object to release - */ -void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) -{ - kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); -} - -/** * batadv_originator_init() - Initialize all originator structures * @bat_priv: the bat priv with all the soft interface information * @@ -232,7 +221,7 @@ err: * free after rcu grace period * @ref: kref pointer of the neigh_ifinfo */ -static void batadv_neigh_ifinfo_release(struct kref *ref) +void batadv_neigh_ifinfo_release(struct kref *ref) { struct batadv_neigh_ifinfo *neigh_ifinfo; @@ -245,21 +234,11 @@ static void batadv_neigh_ifinfo_release(struct kref *ref) } /** - * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release - * the neigh_ifinfo - * @neigh_ifinfo: the neigh_ifinfo object to release - */ -void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) -{ - kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); -} - -/** * batadv_hardif_neigh_release() - release hardif neigh node from lists and * queue for free after rcu grace period * @ref: kref pointer of the neigh_node */ -static void batadv_hardif_neigh_release(struct kref *ref) +void batadv_hardif_neigh_release(struct kref *ref) { struct batadv_hardif_neigh_node *hardif_neigh; @@ -275,21 +254,11 @@ static void batadv_hardif_neigh_release(struct kref *ref) } /** - * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter - * and possibly release it - * @hardif_neigh: hardif neigh neighbor to free - */ -void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) -{ - kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); -} - -/** * batadv_neigh_node_release() - release neigh_node from lists and queue for * free after rcu grace period * @ref: kref pointer of the neigh_node */ -static void batadv_neigh_node_release(struct kref *ref) +void batadv_neigh_node_release(struct kref *ref) { struct hlist_node *node_tmp; struct batadv_neigh_node *neigh_node; @@ -310,22 +279,12 @@ static void batadv_neigh_node_release(struct kref *ref) } /** - * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly - * release it - * @neigh_node: neigh neighbor to free - */ -void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) -{ - kref_put(&neigh_node->refcount, batadv_neigh_node_release); -} - -/** * batadv_orig_router_get() - router to the originator depending on iface * @orig_node: the orig node for the router * @if_outgoing: the interface where the payload packet has been received or * the OGM should be sent to * - * Return: the neighbor which should be router for this orig_node/iface. + * Return: the neighbor which should be the router for this orig_node/iface. * * The object is returned with refcounter increased by 1. */ @@ -515,7 +474,7 @@ out: * Looks for and possibly returns a neighbour belonging to this originator list * which is connected through the provided hard interface. * - * Return: neighbor when found. Othwerwise NULL + * Return: neighbor when found. Otherwise NULL */ static struct batadv_neigh_node * batadv_neigh_node_get(const struct batadv_orig_node *orig_node, @@ -620,7 +579,7 @@ batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, * * Looks for and possibly returns a neighbour belonging to this hard interface. * - * Return: neighbor when found. Othwerwise NULL + * Return: neighbor when found. Otherwise NULL */ struct batadv_hardif_neigh_node * batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, @@ -705,8 +664,7 @@ batadv_neigh_node_create(struct batadv_orig_node *orig_node, out: spin_unlock_bh(&orig_node->neigh_list_lock); - if (hardif_neigh) - batadv_hardif_neigh_put(hardif_neigh); + batadv_hardif_neigh_put(hardif_neigh); return neigh_node; } @@ -733,42 +691,6 @@ batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_hardif_neigh_seq_print_text() - print the single hop neighbour list - * @seq: neighbour table seq_file struct - * @offset: not used - * - * Return: always 0 - */ -int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hard_iface *primary_if; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - return 0; - - seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", - BATADV_SOURCE_VERSION, primary_if->net_dev->name, - primary_if->net_dev->dev_addr, net_dev->name, - bat_priv->algo_ops->name); - - batadv_hardif_put(primary_if); - - if (!bat_priv->algo_ops->neigh.print) { - seq_puts(seq, - "No printing function for this routing protocol\n"); - return 0; - } - - bat_priv->algo_ops->neigh.print(bat_priv, seq); - return 0; -} -#endif - /** * batadv_hardif_neigh_dump() - Dump to netlink the neighbor infos for a * specific outgoing interface @@ -834,14 +756,10 @@ int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (hardif) - batadv_hardif_put(hardif); - if (hard_iface) - dev_put(hard_iface); - if (primary_if) - batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + batadv_hardif_put(hardif); + dev_put(hard_iface); + batadv_hardif_put(primary_if); + dev_put(soft_iface); return ret; } @@ -851,7 +769,7 @@ int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) * free after rcu grace period * @ref: kref pointer of the orig_ifinfo */ -static void batadv_orig_ifinfo_release(struct kref *ref) +void batadv_orig_ifinfo_release(struct kref *ref) { struct batadv_orig_ifinfo *orig_ifinfo; struct batadv_neigh_node *router; @@ -863,23 +781,12 @@ static void batadv_orig_ifinfo_release(struct kref *ref) /* this is the last reference to this object */ router = rcu_dereference_protected(orig_ifinfo->router, true); - if (router) - batadv_neigh_node_put(router); + batadv_neigh_node_put(router); kfree_rcu(orig_ifinfo, rcu); } /** - * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release - * the orig_ifinfo - * @orig_ifinfo: the orig_ifinfo object to release - */ -void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) -{ - kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); -} - -/** * batadv_orig_node_free_rcu() - free the orig_node * @rcu: rcu pointer of the orig_node */ @@ -902,7 +809,7 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu) * free after rcu grace period * @ref: kref pointer of the orig_node */ -static void batadv_orig_node_release(struct kref *ref) +void batadv_orig_node_release(struct kref *ref) { struct hlist_node *node_tmp; struct batadv_neigh_node *neigh_node; @@ -932,8 +839,7 @@ static void batadv_orig_node_release(struct kref *ref) orig_node->last_bonding_candidate = NULL; spin_unlock_bh(&orig_node->neigh_list_lock); - if (last_candidate) - batadv_orig_ifinfo_put(last_candidate); + batadv_orig_ifinfo_put(last_candidate); spin_lock_bh(&orig_node->vlan_list_lock); hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) { @@ -949,16 +855,6 @@ static void batadv_orig_node_release(struct kref *ref) } /** - * batadv_orig_node_put() - decrement the orig node refcounter and possibly - * release it - * @orig_node: the orig node to free - */ -void batadv_orig_node_put(struct batadv_orig_node *orig_node) -{ - kref_put(&orig_node->refcount, batadv_orig_node_release); -} - -/** * batadv_originator_free() - Free all originator structures * @bat_priv: the bat priv with all the soft interface information */ @@ -999,7 +895,7 @@ void batadv_originator_free(struct batadv_priv *bat_priv) * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the originator * - * Creates a new originator object and initialise all the generic fields. + * Creates a new originator object and initialises all the generic fields. * The new object is not added to the originator list. * * Return: the newly created object or NULL on failure. @@ -1250,8 +1146,7 @@ batadv_find_best_neighbor(struct batadv_priv *bat_priv, if (!kref_get_unless_zero(&neigh->refcount)) continue; - if (best) - batadv_neigh_node_put(best); + batadv_neigh_node_put(best); best = neigh; } @@ -1296,8 +1191,7 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, BATADV_IF_DEFAULT); batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, best_neigh_node); - if (best_neigh_node) - batadv_neigh_node_put(best_neigh_node); + batadv_neigh_node_put(best_neigh_node); /* ... then for all other interfaces. */ rcu_read_lock(); @@ -1316,8 +1210,7 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, hard_iface); batadv_update_route(bat_priv, orig_node, hard_iface, best_neigh_node); - if (best_neigh_node) - batadv_neigh_node_put(best_neigh_node); + batadv_neigh_node_put(best_neigh_node); batadv_hardif_put(hard_iface); } @@ -1382,90 +1275,6 @@ static void batadv_purge_orig(struct work_struct *work) msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -/** - * batadv_orig_seq_print_text() - Print the originator table in a seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hard_iface *primary_if; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - return 0; - - seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", - BATADV_SOURCE_VERSION, primary_if->net_dev->name, - primary_if->net_dev->dev_addr, net_dev->name, - bat_priv->algo_ops->name); - - batadv_hardif_put(primary_if); - - if (!bat_priv->algo_ops->orig.print) { - seq_puts(seq, - "No printing function for this routing protocol\n"); - return 0; - } - - bat_priv->algo_ops->orig.print(bat_priv, seq, BATADV_IF_DEFAULT); - - return 0; -} - -/** - * batadv_orig_hardif_seq_print_text() - writes originator infos for a specific - * outgoing interface - * @seq: debugfs table seq_file struct - * @offset: not used - * - * Return: 0 - */ -int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_hard_iface *hard_iface; - struct batadv_priv *bat_priv; - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - - if (!hard_iface || !hard_iface->soft_iface) { - seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); - goto out; - } - - bat_priv = netdev_priv(hard_iface->soft_iface); - if (!bat_priv->algo_ops->orig.print) { - seq_puts(seq, - "No printing function for this routing protocol\n"); - goto out; - } - - if (hard_iface->if_status != BATADV_IF_ACTIVE) { - seq_puts(seq, "Interface not active\n"); - goto out; - } - - seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", - BATADV_SOURCE_VERSION, hard_iface->net_dev->name, - hard_iface->net_dev->dev_addr, - hard_iface->soft_iface->name, bat_priv->algo_ops->name); - - bat_priv->algo_ops->orig.print(bat_priv, seq, hard_iface); - -out: - if (hard_iface) - batadv_hardif_put(hard_iface); - return 0; -} -#endif - /** * batadv_orig_dump() - Dump to netlink the originator infos for a specific * outgoing interface @@ -1531,14 +1340,10 @@ int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (hardif) - batadv_hardif_put(hardif); - if (hard_iface) - dev_put(hard_iface); - if (primary_if) - batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + batadv_hardif_put(hardif); + dev_put(hard_iface); + batadv_hardif_put(primary_if); + dev_put(soft_iface); return ret; } diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h index 7bc01c138b3a..ea3d69e4e670 100644 --- a/net/batman-adv/originator.h +++ b/net/batman-adv/originator.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -12,8 +12,8 @@ #include <linux/compiler.h> #include <linux/if_ether.h> #include <linux/jhash.h> +#include <linux/kref.h> #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> @@ -21,19 +21,18 @@ bool batadv_compare_orig(const struct hlist_node *node, const void *data2); int batadv_originator_init(struct batadv_priv *bat_priv); void batadv_originator_free(struct batadv_priv *bat_priv); void batadv_purge_orig_ref(struct batadv_priv *bat_priv); -void batadv_orig_node_put(struct batadv_orig_node *orig_node); +void batadv_orig_node_release(struct kref *ref); struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, const u8 *addr); struct batadv_hardif_neigh_node * batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, const u8 *neigh_addr); -void -batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh); +void batadv_hardif_neigh_release(struct kref *ref); struct batadv_neigh_node * batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, struct batadv_hard_iface *hard_iface, const u8 *neigh_addr); -void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node); +void batadv_neigh_node_release(struct kref *ref); struct batadv_neigh_node * batadv_orig_router_get(struct batadv_orig_node *orig_node, const struct batadv_hard_iface *if_outgoing); @@ -43,10 +42,9 @@ batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, struct batadv_neigh_ifinfo * batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, struct batadv_hard_iface *if_outgoing); -void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo); +void batadv_neigh_ifinfo_release(struct kref *ref); int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb); -int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset); struct batadv_orig_ifinfo * batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, @@ -54,18 +52,16 @@ batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, struct batadv_orig_ifinfo * batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, struct batadv_hard_iface *if_outgoing); -void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo); +void batadv_orig_ifinfo_release(struct kref *ref); -int batadv_orig_seq_print_text(struct seq_file *seq, void *offset); int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb); -int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset); struct batadv_orig_node_vlan * batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, unsigned short vid); struct batadv_orig_node_vlan * batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, unsigned short vid); -void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan); +void batadv_orig_node_vlan_release(struct kref *ref); /** * batadv_choose_orig() - Return the index of the orig entry in the hash table @@ -86,4 +82,86 @@ static inline u32 batadv_choose_orig(const void *data, u32 size) struct batadv_orig_node * batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data); +/** + * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release + * the originator-vlan object + * @orig_vlan: the originator-vlan object to release + */ +static inline void +batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) +{ + if (!orig_vlan) + return; + + kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); +} + +/** + * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release + * the neigh_ifinfo + * @neigh_ifinfo: the neigh_ifinfo object to release + */ +static inline void +batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) +{ + if (!neigh_ifinfo) + return; + + kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); +} + +/** + * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter + * and possibly release it + * @hardif_neigh: hardif neigh neighbor to free + */ +static inline void +batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) +{ + if (!hardif_neigh) + return; + + kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); +} + +/** + * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly + * release it + * @neigh_node: neigh neighbor to free + */ +static inline void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) +{ + if (!neigh_node) + return; + + kref_put(&neigh_node->refcount, batadv_neigh_node_release); +} + +/** + * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release + * the orig_ifinfo + * @orig_ifinfo: the orig_ifinfo object to release + */ +static inline void +batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) +{ + if (!orig_ifinfo) + return; + + kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); +} + +/** + * batadv_orig_node_put() - decrement the orig node refcounter and possibly + * release it + * @orig_node: the orig node to free + */ +static inline void batadv_orig_node_put(struct batadv_orig_node *orig_node) +{ + if (!orig_node) + return; + + kref_put(&orig_node->refcount, batadv_orig_node_release); +} + #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */ diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 3632bd976c56..83f31494ea4d 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -29,7 +29,6 @@ #include "distributed-arp-table.h" #include "fragmentation.h" #include "hard-interface.h" -#include "icmp_socket.h" #include "log.h" #include "network-coding.h" #include "originator.h" @@ -71,13 +70,13 @@ static void _batadv_update_route(struct batadv_priv *bat_priv, * the code needs to ensure the curr_router variable contains a pointer * to the replaced best neighbor. */ - curr_router = rcu_dereference_protected(orig_ifinfo->router, true); /* increase refcount of new best neighbor */ if (neigh_node) kref_get(&neigh_node->refcount); - rcu_assign_pointer(orig_ifinfo->router, neigh_node); + curr_router = rcu_replace_pointer(orig_ifinfo->router, neigh_node, + true); spin_unlock_bh(&orig_node->neigh_list_lock); batadv_orig_ifinfo_put(orig_ifinfo); @@ -102,8 +101,7 @@ static void _batadv_update_route(struct batadv_priv *bat_priv, } /* decrease refcount of previous best neighbor */ - if (curr_router) - batadv_neigh_node_put(curr_router); + batadv_neigh_node_put(curr_router); } /** @@ -129,8 +127,7 @@ void batadv_update_route(struct batadv_priv *bat_priv, _batadv_update_route(bat_priv, orig_node, recv_if, neigh_node); out: - if (router) - batadv_neigh_node_put(router); + batadv_neigh_node_put(router); } /** @@ -227,15 +224,6 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv, icmph = (struct batadv_icmp_header *)skb->data; switch (icmph->msg_type) { - case BATADV_ECHO_REPLY: - case BATADV_DESTINATION_UNREACHABLE: - case BATADV_TTL_EXCEEDED: - /* receive the packet */ - if (skb_linearize(skb) < 0) - break; - - batadv_socket_receive_packet(icmph, skb->len); - break; case BATADV_ECHO_REQUEST: /* answer echo request (ping) */ primary_if = batadv_primary_if_get_selected(bat_priv); @@ -279,10 +267,8 @@ static int batadv_recv_my_icmp_packet(struct batadv_priv *bat_priv, goto out; } out: - if (primary_if) - batadv_hardif_put(primary_if); - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); kfree_skb(skb); @@ -334,10 +320,8 @@ static int batadv_recv_icmp_ttl_exceeded(struct batadv_priv *bat_priv, skb = NULL; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); kfree_skb(skb); @@ -435,8 +419,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb, skb = NULL; put_orig_node: - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); free_skb: kfree_skb(skb); @@ -449,7 +432,7 @@ free_skb: * @skb: packet to check * @hdr_size: size of header to pull * - * Check for short header and bad addresses in given packet. + * Checks for short header and bad addresses in the given packet. * * Return: negative value when check fails and 0 otherwise. The negative value * depends on the reason: -ENODATA for bad header, -EBADR for broadcast @@ -523,8 +506,7 @@ batadv_last_bonding_replace(struct batadv_orig_node *orig_node, orig_node->last_bonding_candidate = new_candidate; spin_unlock_bh(&orig_node->neigh_list_lock); - if (old_candidate) - batadv_orig_ifinfo_put(old_candidate); + batadv_orig_ifinfo_put(old_candidate); } /** @@ -666,8 +648,7 @@ next: batadv_orig_ifinfo_put(next_candidate); } - if (last_candidate) - batadv_orig_ifinfo_put(last_candidate); + batadv_orig_ifinfo_put(last_candidate); return router; } @@ -766,7 +747,8 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, struct sk_buff *skb, struct batadv_orig_node *orig_node = NULL; struct batadv_hard_iface *primary_if = NULL; bool ret = false; - u8 *orig_addr, orig_ttvn; + const u8 *orig_addr; + u8 orig_ttvn; if (batadv_is_my_client(bat_priv, dst_addr, vid)) { primary_if = batadv_primary_if_get_selected(bat_priv); @@ -795,10 +777,8 @@ batadv_reroute_unicast_packet(struct batadv_priv *bat_priv, struct sk_buff *skb, ret = true; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); return ret; } @@ -826,6 +806,10 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, vid = batadv_get_vid(skb, hdr_len); ethhdr = (struct ethhdr *)(skb->data + hdr_len); + /* do not reroute multicast frames in a unicast header */ + if (is_multicast_ether_addr(ethhdr->h_dest)) + return true; + /* check if the destination client was served by this node and it is now * roaming. In this case, it means that the node has got a ROAM_ADV * message and that it knows the new destination in the mesh to re-route @@ -1037,8 +1021,7 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, orig_node); rx_success: - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); return NET_RX_SUCCESS; } @@ -1113,7 +1096,7 @@ free_skb: * @recv_if: interface that the skb is received on * * This function does one of the three following things: 1) Forward fragment, if - * the assembled packet will exceed our MTU; 2) Buffer fragment, if we till + * the assembled packet will exceed our MTU; 2) Buffer fragment, if we still * lack further fragments; 3) Merge fragments, if we have all needed parts. * * Return: NET_RX_DROP if the skb is not consumed, NET_RX_SUCCESS otherwise. @@ -1188,9 +1171,9 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, struct batadv_bcast_packet *bcast_packet; struct ethhdr *ethhdr; int hdr_size = sizeof(*bcast_packet); - int ret = NET_RX_DROP; s32 seq_diff; u32 seqno; + int ret; /* drop packet if it has not necessary minimum size */ if (unlikely(!pskb_may_pull(skb, hdr_size))) @@ -1216,7 +1199,7 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, if (batadv_is_my_mac(bat_priv, bcast_packet->orig)) goto free_skb; - if (bcast_packet->ttl < 2) + if (bcast_packet->ttl-- < 2) goto free_skb; orig_node = batadv_orig_hash_find(bat_priv, bcast_packet->orig); @@ -1255,7 +1238,9 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, batadv_skb_set_priority(skb, sizeof(struct batadv_bcast_packet)); /* rebroadcast packet */ - batadv_add_bcast_packet_to_list(bat_priv, skb, 1, false); + ret = batadv_forw_bcast_packet(bat_priv, skb, 0, false); + if (ret == NETDEV_TX_BUSY) + goto free_skb; /* don't hand the broadcast up if it is from an originator * from the same backbone. @@ -1281,8 +1266,8 @@ spin_unlock: spin_unlock_bh(&orig_node->bcast_seqno_lock); free_skb: kfree_skb(skb); + ret = NET_RX_DROP; out: - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); return ret; } diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index 2ed49db6eff5..5f387786e9a7 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 7f8ade04e08e..0379b126865d 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -10,13 +10,13 @@ #include <linux/atomic.h> #include <linux/bug.h> #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/gfp.h> #include <linux/if.h> #include <linux/if_ether.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/netdevice.h> @@ -152,8 +152,7 @@ int batadv_send_unicast_skb(struct sk_buff *skb, if (hardif_neigh && ret != NET_XMIT_DROP) hardif_neigh->bat_v.last_unicast_tx = jiffies; - if (hardif_neigh) - batadv_hardif_neigh_put(hardif_neigh); + batadv_hardif_neigh_put(hardif_neigh); #endif return ret; @@ -309,8 +308,7 @@ bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv, ret = true; out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); return ret; } @@ -425,8 +423,7 @@ int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv, ret = batadv_send_skb_unicast(bat_priv, skb, packet_type, packet_subtype, orig_node, vid); - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); return ret; } @@ -452,8 +449,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, ret = batadv_send_skb_unicast(bat_priv, skb, BATADV_UNICAST_4ADDR, BATADV_P_DATA, orig_node, vid); - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); return ret; } @@ -461,7 +457,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, /** * batadv_forw_packet_free() - free a forwarding packet * @forw_packet: The packet to free - * @dropped: whether the packet is freed because is is dropped + * @dropped: whether the packet is freed because is dropped * * This frees a forwarding packet and releases any resources it might * have claimed. @@ -474,10 +470,8 @@ void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet, else consume_skb(forw_packet->skb); - if (forw_packet->if_incoming) - batadv_hardif_put(forw_packet->if_incoming); - if (forw_packet->if_outgoing) - batadv_hardif_put(forw_packet->if_outgoing); + batadv_hardif_put(forw_packet->if_incoming); + batadv_hardif_put(forw_packet->if_outgoing); if (forw_packet->queue_left) atomic_inc(forw_packet->queue_left); kfree(forw_packet); @@ -605,8 +599,8 @@ bool batadv_forw_packet_steal(struct batadv_forw_packet *forw_packet, * given hard_iface. If hard_iface is NULL forwarding packets on all hard * interfaces will be claimed. * - * The packets are being moved from the forw_list to the cleanup_list and - * by that allows already running threads to notice the claiming. + * The packets are being moved from the forw_list to the cleanup_list. This + * makes it possible for already running threads to notice the claim. */ static void batadv_forw_packet_list_steal(struct hlist_head *forw_list, @@ -737,57 +731,52 @@ void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv, } /** - * batadv_add_bcast_packet_to_list() - queue broadcast packet for multiple sends + * batadv_forw_bcast_packet_to_list() - queue broadcast packet for transmissions * @bat_priv: the bat priv with all the soft interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending * @own_packet: true if it is a self-generated broadcast packet + * @if_in: the interface where the packet was received on + * @if_out: the outgoing interface to queue on * - * add a broadcast packet to the queue and setup timers. broadcast packets + * Adds a broadcast packet to the queue and sets up timers. Broadcast packets * are sent multiple times to increase probability for being received. * - * The skb is not consumed, so the caller should make sure that the - * skb is freed. + * This call clones the given skb, hence the caller needs to take into + * account that the data segment of the original skb might not be + * modifiable anymore. * * Return: NETDEV_TX_OK on success and NETDEV_TX_BUSY on errors. */ -int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv, - const struct sk_buff *skb, - unsigned long delay, - bool own_packet) +static int batadv_forw_bcast_packet_to_list(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet, + struct batadv_hard_iface *if_in, + struct batadv_hard_iface *if_out) { - struct batadv_hard_iface *primary_if; struct batadv_forw_packet *forw_packet; - struct batadv_bcast_packet *bcast_packet; + unsigned long send_time = jiffies; struct sk_buff *newskb; - primary_if = batadv_primary_if_get_selected(bat_priv); - if (!primary_if) + newskb = skb_clone(skb, GFP_ATOMIC); + if (!newskb) goto err; - newskb = skb_copy(skb, GFP_ATOMIC); - if (!newskb) { - batadv_hardif_put(primary_if); - goto err; - } - - forw_packet = batadv_forw_packet_alloc(primary_if, NULL, + forw_packet = batadv_forw_packet_alloc(if_in, if_out, &bat_priv->bcast_queue_left, bat_priv, newskb); - batadv_hardif_put(primary_if); if (!forw_packet) goto err_packet_free; - /* as we have a copy now, it is safe to decrease the TTL */ - bcast_packet = (struct batadv_bcast_packet *)newskb->data; - bcast_packet->ttl--; - forw_packet->own = own_packet; INIT_DELAYED_WORK(&forw_packet->delayed_work, batadv_send_outstanding_bcast_packet); - batadv_forw_packet_bcast_queue(bat_priv, forw_packet, jiffies + delay); + send_time += delay ? delay : msecs_to_jiffies(5); + + batadv_forw_packet_bcast_queue(bat_priv, forw_packet, send_time); return NETDEV_TX_OK; err_packet_free: @@ -797,9 +786,222 @@ err: } /** + * batadv_forw_bcast_packet_if() - forward and queue a broadcast packet + * @bat_priv: the bat priv with all the soft interface information + * @skb: broadcast packet to add + * @delay: number of jiffies to wait before sending + * @own_packet: true if it is a self-generated broadcast packet + * @if_in: the interface where the packet was received on + * @if_out: the outgoing interface to forward to + * + * Transmits a broadcast packet on the specified interface either immediately + * or if a delay is given after that. Furthermore, queues additional + * retransmissions if this interface is a wireless one. + * + * This call clones the given skb, hence the caller needs to take into + * account that the data segment of the original skb might not be + * modifiable anymore. + * + * Return: NETDEV_TX_OK on success and NETDEV_TX_BUSY on errors. + */ +static int batadv_forw_bcast_packet_if(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet, + struct batadv_hard_iface *if_in, + struct batadv_hard_iface *if_out) +{ + unsigned int num_bcasts = if_out->num_bcasts; + struct sk_buff *newskb; + int ret = NETDEV_TX_OK; + + if (!delay) { + newskb = skb_clone(skb, GFP_ATOMIC); + if (!newskb) + return NETDEV_TX_BUSY; + + batadv_send_broadcast_skb(newskb, if_out); + num_bcasts--; + } + + /* delayed broadcast or rebroadcasts? */ + if (num_bcasts >= 1) { + BATADV_SKB_CB(skb)->num_bcasts = num_bcasts; + + ret = batadv_forw_bcast_packet_to_list(bat_priv, skb, delay, + own_packet, if_in, + if_out); + } + + return ret; +} + +/** + * batadv_send_no_broadcast() - check whether (re)broadcast is necessary + * @bat_priv: the bat priv with all the soft interface information + * @skb: broadcast packet to check + * @own_packet: true if it is a self-generated broadcast packet + * @if_out: the outgoing interface checked and considered for (re)broadcast + * + * Return: False if a packet needs to be (re)broadcasted on the given interface, + * true otherwise. + */ +static bool batadv_send_no_broadcast(struct batadv_priv *bat_priv, + struct sk_buff *skb, bool own_packet, + struct batadv_hard_iface *if_out) +{ + struct batadv_hardif_neigh_node *neigh_node = NULL; + struct batadv_bcast_packet *bcast_packet; + u8 *orig_neigh; + u8 *neigh_addr; + char *type; + int ret; + + if (!own_packet) { + neigh_addr = eth_hdr(skb)->h_source; + neigh_node = batadv_hardif_neigh_get(if_out, + neigh_addr); + } + + bcast_packet = (struct batadv_bcast_packet *)skb->data; + orig_neigh = neigh_node ? neigh_node->orig : NULL; + + ret = batadv_hardif_no_broadcast(if_out, bcast_packet->orig, + orig_neigh); + + batadv_hardif_neigh_put(neigh_node); + + /* ok, may broadcast */ + if (!ret) + return false; + + /* no broadcast */ + switch (ret) { + case BATADV_HARDIF_BCAST_NORECIPIENT: + type = "no neighbor"; + break; + case BATADV_HARDIF_BCAST_DUPFWD: + type = "single neighbor is source"; + break; + case BATADV_HARDIF_BCAST_DUPORIG: + type = "single neighbor is originator"; + break; + default: + type = "unknown"; + } + + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "BCAST packet from orig %pM on %s suppressed: %s\n", + bcast_packet->orig, + if_out->net_dev->name, type); + + return true; +} + +/** + * __batadv_forw_bcast_packet() - forward and queue a broadcast packet + * @bat_priv: the bat priv with all the soft interface information + * @skb: broadcast packet to add + * @delay: number of jiffies to wait before sending + * @own_packet: true if it is a self-generated broadcast packet + * + * Transmits a broadcast packet either immediately or if a delay is given + * after that. Furthermore, queues additional retransmissions on wireless + * interfaces. + * + * This call clones the given skb, hence the caller needs to take into + * account that the data segment of the given skb might not be + * modifiable anymore. + * + * Return: NETDEV_TX_OK on success and NETDEV_TX_BUSY on errors. + */ +static int __batadv_forw_bcast_packet(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet) +{ + struct batadv_hard_iface *hard_iface; + struct batadv_hard_iface *primary_if; + int ret = NETDEV_TX_OK; + + primary_if = batadv_primary_if_get_selected(bat_priv); + if (!primary_if) + return NETDEV_TX_BUSY; + + rcu_read_lock(); + list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + if (hard_iface->soft_iface != bat_priv->soft_iface) + continue; + + if (!kref_get_unless_zero(&hard_iface->refcount)) + continue; + + if (batadv_send_no_broadcast(bat_priv, skb, own_packet, + hard_iface)) { + batadv_hardif_put(hard_iface); + continue; + } + + ret = batadv_forw_bcast_packet_if(bat_priv, skb, delay, + own_packet, primary_if, + hard_iface); + batadv_hardif_put(hard_iface); + + if (ret == NETDEV_TX_BUSY) + break; + } + rcu_read_unlock(); + + batadv_hardif_put(primary_if); + return ret; +} + +/** + * batadv_forw_bcast_packet() - forward and queue a broadcast packet + * @bat_priv: the bat priv with all the soft interface information + * @skb: broadcast packet to add + * @delay: number of jiffies to wait before sending + * @own_packet: true if it is a self-generated broadcast packet + * + * Transmits a broadcast packet either immediately or if a delay is given + * after that. Furthermore, queues additional retransmissions on wireless + * interfaces. + * + * Return: NETDEV_TX_OK on success and NETDEV_TX_BUSY on errors. + */ +int batadv_forw_bcast_packet(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet) +{ + return __batadv_forw_bcast_packet(bat_priv, skb, delay, own_packet); +} + +/** + * batadv_send_bcast_packet() - send and queue a broadcast packet + * @bat_priv: the bat priv with all the soft interface information + * @skb: broadcast packet to add + * @delay: number of jiffies to wait before sending + * @own_packet: true if it is a self-generated broadcast packet + * + * Transmits a broadcast packet either immediately or if a delay is given + * after that. Furthermore, queues additional retransmissions on wireless + * interfaces. + * + * Consumes the provided skb. + */ +void batadv_send_bcast_packet(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet) +{ + __batadv_forw_bcast_packet(bat_priv, skb, delay, own_packet); + consume_skb(skb); +} + +/** * batadv_forw_packet_bcasts_left() - check if a retransmission is necessary * @forw_packet: the forwarding packet to check - * @hard_iface: the interface to check on * * Checks whether a given packet has any (re)transmissions left on the provided * interface. @@ -811,28 +1013,20 @@ err: * Return: True if (re)transmissions are left, false otherwise. */ static bool -batadv_forw_packet_bcasts_left(struct batadv_forw_packet *forw_packet, - struct batadv_hard_iface *hard_iface) +batadv_forw_packet_bcasts_left(struct batadv_forw_packet *forw_packet) { - unsigned int max; - - if (hard_iface) - max = hard_iface->num_bcasts; - else - max = BATADV_NUM_BCASTS_MAX; - - return BATADV_SKB_CB(forw_packet->skb)->num_bcasts < max; + return BATADV_SKB_CB(forw_packet->skb)->num_bcasts; } /** - * batadv_forw_packet_bcasts_inc() - increment retransmission counter of a + * batadv_forw_packet_bcasts_dec() - decrement retransmission counter of a * packet - * @forw_packet: the packet to increase the counter for + * @forw_packet: the packet to decrease the counter for */ static void -batadv_forw_packet_bcasts_inc(struct batadv_forw_packet *forw_packet) +batadv_forw_packet_bcasts_dec(struct batadv_forw_packet *forw_packet) { - BATADV_SKB_CB(forw_packet->skb)->num_bcasts++; + BATADV_SKB_CB(forw_packet->skb)->num_bcasts--; } /** @@ -843,30 +1037,30 @@ batadv_forw_packet_bcasts_inc(struct batadv_forw_packet *forw_packet) */ bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet) { - return BATADV_SKB_CB(forw_packet->skb)->num_bcasts > 0; + unsigned char num_bcasts = BATADV_SKB_CB(forw_packet->skb)->num_bcasts; + + return num_bcasts != forw_packet->if_outgoing->num_bcasts; } +/** + * batadv_send_outstanding_bcast_packet() - transmit a queued broadcast packet + * @work: work queue item + * + * Transmits a queued broadcast packet and if necessary reschedules it. + */ static void batadv_send_outstanding_bcast_packet(struct work_struct *work) { - struct batadv_hard_iface *hard_iface; - struct batadv_hardif_neigh_node *neigh_node; - struct delayed_work *delayed_work; + unsigned long send_time = jiffies + msecs_to_jiffies(5); struct batadv_forw_packet *forw_packet; - struct batadv_bcast_packet *bcast_packet; - struct sk_buff *skb1; - struct net_device *soft_iface; + struct delayed_work *delayed_work; struct batadv_priv *bat_priv; - unsigned long send_time = jiffies + msecs_to_jiffies(5); + struct sk_buff *skb1; bool dropped = false; - u8 *neigh_addr; - u8 *orig_neigh; - int ret = 0; delayed_work = to_delayed_work(work); forw_packet = container_of(delayed_work, struct batadv_forw_packet, delayed_work); - soft_iface = forw_packet->if_incoming->soft_iface; - bat_priv = netdev_priv(soft_iface); + bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) { dropped = true; @@ -878,76 +1072,15 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work) goto out; } - bcast_packet = (struct batadv_bcast_packet *)forw_packet->skb->data; - - /* rebroadcast packet */ - rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != soft_iface) - continue; - - if (!batadv_forw_packet_bcasts_left(forw_packet, hard_iface)) - continue; - - if (forw_packet->own) { - neigh_node = NULL; - } else { - neigh_addr = eth_hdr(forw_packet->skb)->h_source; - neigh_node = batadv_hardif_neigh_get(hard_iface, - neigh_addr); - } - - orig_neigh = neigh_node ? neigh_node->orig : NULL; - - ret = batadv_hardif_no_broadcast(hard_iface, bcast_packet->orig, - orig_neigh); - - if (ret) { - char *type; - - switch (ret) { - case BATADV_HARDIF_BCAST_NORECIPIENT: - type = "no neighbor"; - break; - case BATADV_HARDIF_BCAST_DUPFWD: - type = "single neighbor is source"; - break; - case BATADV_HARDIF_BCAST_DUPORIG: - type = "single neighbor is originator"; - break; - default: - type = "unknown"; - } - - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "BCAST packet from orig %pM on %s suppressed: %s\n", - bcast_packet->orig, - hard_iface->net_dev->name, type); - - if (neigh_node) - batadv_hardif_neigh_put(neigh_node); - - continue; - } - - if (neigh_node) - batadv_hardif_neigh_put(neigh_node); - - if (!kref_get_unless_zero(&hard_iface->refcount)) - continue; - - /* send a copy of the saved skb */ - skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC); - if (skb1) - batadv_send_broadcast_skb(skb1, hard_iface); - - batadv_hardif_put(hard_iface); - } - rcu_read_unlock(); + /* send a copy of the saved skb */ + skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC); + if (!skb1) + goto out; - batadv_forw_packet_bcasts_inc(forw_packet); + batadv_send_broadcast_skb(skb1, forw_packet->if_outgoing); + batadv_forw_packet_bcasts_dec(forw_packet); - /* if we still have some more bcasts to send */ - if (batadv_forw_packet_bcasts_left(forw_packet, NULL)) { + if (batadv_forw_packet_bcasts_left(forw_packet)) { batadv_forw_packet_bcast_queue(bat_priv, forw_packet, send_time); return; diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h index 0d36e15589f6..08af251b765c 100644 --- a/net/batman-adv/send.h +++ b/net/batman-adv/send.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -39,10 +39,14 @@ int batadv_send_broadcast_skb(struct sk_buff *skb, struct batadv_hard_iface *hard_iface); int batadv_send_unicast_skb(struct sk_buff *skb, struct batadv_neigh_node *neigh_node); -int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv, - const struct sk_buff *skb, - unsigned long delay, - bool own_packet); +int batadv_forw_bcast_packet(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet); +void batadv_send_bcast_packet(struct batadv_priv *bat_priv, + struct sk_buff *skb, + unsigned long delay, + bool own_packet); void batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, const struct batadv_hard_iface *hard_iface); diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 5f05a728f347..0f5c0679b55a 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -11,6 +11,7 @@ #include <linux/byteorder/generic.h> #include <linux/cache.h> #include <linux/compiler.h> +#include <linux/container_of.h> #include <linux/cpumask.h> #include <linux/errno.h> #include <linux/etherdevice.h> @@ -19,17 +20,15 @@ #include <linux/if_ether.h> #include <linux/if_vlan.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> +#include <linux/lockdep.h> #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/percpu.h> -#include <linux/printk.h> #include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/rtnetlink.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/socket.h> @@ -37,12 +36,13 @@ #include <linux/stddef.h> #include <linux/string.h> #include <linux/types.h> +#include <net/net_namespace.h> +#include <net/netlink.h> #include <uapi/linux/batadv_packet.h> #include <uapi/linux/batman_adv.h> #include "bat_algo.h" #include "bridge_loop_avoidance.h" -#include "debugfs.h" #include "distributed-arp-table.h" #include "gateway_client.h" #include "hard-interface.h" @@ -50,7 +50,6 @@ #include "network-coding.h" #include "originator.h" #include "send.h" -#include "sysfs.h" #include "translation-table.h" /** @@ -135,7 +134,7 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) return -EADDRNOTAVAIL; ether_addr_copy(old_addr, dev->dev_addr); - ether_addr_copy(dev->dev_addr, addr->sa_data); + eth_hw_addr_set(dev, addr->sa_data); /* only modify transtable if it has been initialized before */ if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) @@ -192,13 +191,14 @@ static netdev_tx_t batadv_interface_tx(struct sk_buff *skb, struct vlan_ethhdr *vhdr; unsigned int header_len = 0; int data_len = skb->len, ret; - unsigned long brd_delay = 1; + unsigned long brd_delay = 0; bool do_bcast = false, client_added; unsigned short vid; u32 seqno; int gw_mode; enum batadv_forw_mode forw_mode = BATADV_FORW_SINGLE; struct batadv_orig_node *mcast_single_orig = NULL; + int mcast_is_routable = 0; int network_offset = ETH_HLEN; __be16 proto; @@ -301,7 +301,8 @@ static netdev_tx_t batadv_interface_tx(struct sk_buff *skb, send: if (do_bcast && !is_broadcast_ether_addr(ethhdr->h_dest)) { forw_mode = batadv_mcast_forw_mode(bat_priv, skb, - &mcast_single_orig); + &mcast_single_orig, + &mcast_is_routable); if (forw_mode == BATADV_FORW_NONE) goto dropped; @@ -331,7 +332,7 @@ send: bcast_packet = (struct batadv_bcast_packet *)skb->data; bcast_packet->version = BATADV_COMPAT_VERSION; - bcast_packet->ttl = BATADV_TTL; + bcast_packet->ttl = BATADV_TTL - 1; /* batman packet type: broadcast */ bcast_packet->packet_type = BATADV_BCAST; @@ -347,13 +348,7 @@ send: seqno = atomic_inc_return(&bat_priv->bcast_seqno); bcast_packet->seqno = htonl(seqno); - batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay, true); - - /* a copy is stored in the bcast list, therefore removing - * the original skb. - */ - consume_skb(skb); - + batadv_send_bcast_packet(bat_priv, skb, brd_delay, true); /* unicast packet */ } else { /* DHCP packets going to a server will use the GW feature */ @@ -363,11 +358,11 @@ send: goto dropped; ret = batadv_send_skb_via_gw(bat_priv, skb, vid); } else if (mcast_single_orig) { - ret = batadv_send_skb_unicast(bat_priv, skb, - BATADV_UNICAST, 0, - mcast_single_orig, vid); + ret = batadv_mcast_forw_send_orig(bat_priv, skb, vid, + mcast_single_orig); } else if (forw_mode == BATADV_FORW_SOME) { - ret = batadv_mcast_forw_send(bat_priv, skb, vid); + ret = batadv_mcast_forw_send(bat_priv, skb, vid, + mcast_is_routable); } else { if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) @@ -391,10 +386,8 @@ dropped: dropped_freed: batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); end: - if (mcast_single_orig) - batadv_orig_node_put(mcast_single_orig); - if (primary_if) - batadv_hardif_put(primary_if); + batadv_orig_node_put(mcast_single_orig); + batadv_hardif_put(primary_if); return NETDEV_TX_OK; } @@ -405,7 +398,7 @@ end: * @hdr_size: size of already parsed batman-adv header * @orig_node: originator from which the batman-adv packet was sent * - * Sends a ethernet frame to the receive path of the local @soft_iface. + * Sends an ethernet frame to the receive path of the local @soft_iface. * skb->data has still point to the batman-adv header with the size @hdr_size. * The caller has to have parsed this header already and made sure that at least * @hdr_size bytes are still available for pull in @skb. @@ -424,10 +417,10 @@ void batadv_interface_rx(struct net_device *soft_iface, struct vlan_ethhdr *vhdr; struct ethhdr *ethhdr; unsigned short vid; - bool is_bcast; + int packet_type; batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; - is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); + packet_type = batadv_bcast_packet->packet_type; skb_pull_rcsum(skb, hdr_size); skb_reset_mac_header(skb); @@ -470,7 +463,7 @@ void batadv_interface_rx(struct net_device *soft_iface, /* Let the bridge loop avoidance check the packet. If will * not handle it, we can safely push it up. */ - if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) + if (batadv_bla_rx(bat_priv, skb, vid, packet_type)) goto out; if (orig_node) @@ -509,7 +502,7 @@ out: * after rcu grace period * @ref: kref pointer of the vlan object */ -static void batadv_softif_vlan_release(struct kref *ref) +void batadv_softif_vlan_release(struct kref *ref) { struct batadv_softif_vlan *vlan; @@ -523,19 +516,6 @@ static void batadv_softif_vlan_release(struct kref *ref) } /** - * batadv_softif_vlan_put() - decrease the vlan object refcounter and - * possibly release it - * @vlan: the vlan object to release - */ -void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan) -{ - if (!vlan) - return; - - kref_put(&vlan->refcount, batadv_softif_vlan_release); -} - -/** * batadv_softif_vlan_get() - get the vlan object for a specific vid * @bat_priv: the bat priv with all the soft interface information * @vid: the identifier of the vlan object to retrieve @@ -574,7 +554,6 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) { struct batadv_softif_vlan *vlan; - int err; spin_lock_bh(&bat_priv->softif_vlan_list_lock); @@ -601,19 +580,6 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); spin_unlock_bh(&bat_priv->softif_vlan_list_lock); - /* batadv_sysfs_add_vlan cannot be in the spinlock section due to the - * sleeping behavior of the sysfs functions and the fs_reclaim lock - */ - err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); - if (err) { - /* ref for the function */ - batadv_softif_vlan_put(vlan); - - /* ref for the list */ - batadv_softif_vlan_put(vlan); - return err; - } - /* add a new TT local entry. This one will be marked with the NOPURGE * flag */ @@ -641,14 +607,13 @@ static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, vlan->vid, "vlan interface destroyed", false); - batadv_sysfs_del_vlan(bat_priv, vlan); batadv_softif_vlan_put(vlan); } /** * batadv_interface_add_vid() - ndo_add_vid API implementation * @dev: the netdev of the mesh interface - * @proto: protocol of the the vlan id + * @proto: protocol of the vlan id * @vid: identifier of the new vlan * * Set up all the internal structures for handling the new vlan on top of the @@ -661,7 +626,6 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, { struct batadv_priv *bat_priv = netdev_priv(dev); struct batadv_softif_vlan *vlan; - int ret; /* only 802.1Q vlans are supported. * batman-adv does not know how to handle other types @@ -681,17 +645,6 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, if (!vlan) return batadv_softif_create_vlan(bat_priv, vid); - /* recreate the sysfs object if it was already destroyed (and it should - * be since we received a kill_vid() for this vlan - */ - if (!vlan->kobj) { - ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); - if (ret) { - batadv_softif_vlan_put(vlan); - return ret; - } - } - /* add a new TT local entry. This one will be marked with the NOPURGE * flag. This must be added again, even if the vlan object already * exists, because the entry was deleted by kill_vid() @@ -706,7 +659,7 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, /** * batadv_interface_kill_vid() - ndo_kill_vid API implementation * @dev: the netdev of the mesh interface - * @proto: protocol of the the vlan id + * @proto: protocol of the vlan id * @vid: identifier of the deleted vlan * * Destroy all the internal structures used to handle the vlan identified by vid @@ -739,6 +692,36 @@ static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, return 0; } +/* batman-adv network devices have devices nesting below it and are a special + * "super class" of normal network devices; split their locks off into a + * separate class since they always nest. + */ +static struct lock_class_key batadv_netdev_xmit_lock_key; +static struct lock_class_key batadv_netdev_addr_lock_key; + +/** + * batadv_set_lockdep_class_one() - Set lockdep class for a single tx queue + * @dev: device which owns the tx queue + * @txq: tx queue to modify + * @_unused: always NULL + */ +static void batadv_set_lockdep_class_one(struct net_device *dev, + struct netdev_queue *txq, + void *_unused) +{ + lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); +} + +/** + * batadv_set_lockdep_class() - Set txq and addr_list lockdep class + * @dev: network device to modify + */ +static void batadv_set_lockdep_class(struct net_device *dev) +{ + lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); + netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); +} + /** * batadv_softif_init_late() - late stage initialization of soft interface * @dev: registered network device to modify @@ -752,6 +735,8 @@ static int batadv_softif_init_late(struct net_device *dev) int ret; size_t cnt_len = sizeof(u64) * BATADV_CNT_NUM; + batadv_set_lockdep_class(dev); + bat_priv = netdev_priv(dev); bat_priv->soft_iface = dev; @@ -813,22 +798,18 @@ static int batadv_softif_init_late(struct net_device *dev) batadv_nc_init_bat_priv(bat_priv); - ret = batadv_algo_select(bat_priv, batadv_routing_algo); - if (ret < 0) - goto free_bat_counters; - - ret = batadv_debugfs_add_meshif(dev); - if (ret < 0) - goto free_bat_counters; + if (!bat_priv->algo_ops) { + ret = batadv_algo_select(bat_priv, batadv_routing_algo); + if (ret < 0) + goto free_bat_counters; + } ret = batadv_mesh_init(dev); if (ret < 0) - goto unreg_debugfs; + goto free_bat_counters; return 0; -unreg_debugfs: - batadv_debugfs_del_meshif(dev); free_bat_counters: free_percpu(bat_priv->bat_counters); bat_priv->bat_counters = NULL; @@ -849,18 +830,16 @@ static int batadv_softif_slave_add(struct net_device *dev, struct netlink_ext_ack *extack) { struct batadv_hard_iface *hard_iface; - struct net *net = dev_net(dev); int ret = -EINVAL; hard_iface = batadv_hardif_get_by_netdev(slave_dev); if (!hard_iface || hard_iface->soft_iface) goto out; - ret = batadv_hardif_enable_interface(hard_iface, net, dev->name); + ret = batadv_hardif_enable_interface(hard_iface, dev); out: - if (hard_iface) - batadv_hardif_put(hard_iface); + batadv_hardif_put(hard_iface); return ret; } @@ -882,12 +861,11 @@ static int batadv_softif_slave_del(struct net_device *dev, if (!hard_iface || hard_iface->soft_iface != dev) goto out; - batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); + batadv_hardif_disable_interface(hard_iface); ret = 0; out: - if (hard_iface) - batadv_hardif_put(hard_iface); + batadv_hardif_put(hard_iface); return ret; } @@ -1005,7 +983,6 @@ static const struct ethtool_ops batadv_ethtool_ops = { */ static void batadv_softif_free(struct net_device *dev) { - batadv_debugfs_del_meshif(dev); batadv_mesh_free(dev); /* some scheduled RCU callbacks need the bat_priv struct to accomplish @@ -1042,57 +1019,56 @@ static void batadv_softif_init_early(struct net_device *dev) } /** - * batadv_softif_create() - Create and register soft interface - * @net: the applicable net namespace - * @name: name of the new soft interface + * batadv_softif_validate() - validate configuration of new batadv link + * @tb: IFLA_INFO_DATA netlink attributes + * @data: enum batadv_ifla_attrs attributes + * @extack: extended ACK report struct * - * Return: newly allocated soft_interface, NULL on errors + * Return: 0 if successful or error otherwise. */ -struct net_device *batadv_softif_create(struct net *net, const char *name) +static int batadv_softif_validate(struct nlattr *tb[], struct nlattr *data[], + struct netlink_ext_ack *extack) { - struct net_device *soft_iface; - int ret; + struct batadv_algo_ops *algo_ops; - soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, - NET_NAME_UNKNOWN, batadv_softif_init_early); - if (!soft_iface) - return NULL; - - dev_net_set(soft_iface, net); - - soft_iface->rtnl_link_ops = &batadv_link_ops; + if (!data) + return 0; - ret = register_netdevice(soft_iface); - if (ret < 0) { - pr_err("Unable to register the batman interface '%s': %i\n", - name, ret); - free_netdev(soft_iface); - return NULL; + if (data[IFLA_BATADV_ALGO_NAME]) { + algo_ops = batadv_algo_get(nla_data(data[IFLA_BATADV_ALGO_NAME])); + if (!algo_ops) + return -EINVAL; } - return soft_iface; + return 0; } /** - * batadv_softif_destroy_sysfs() - deletion of batadv_soft_interface via sysfs - * @soft_iface: the to-be-removed batman-adv interface + * batadv_softif_newlink() - pre-initialize and register new batadv link + * @src_net: the applicable net namespace + * @dev: network device to register + * @tb: IFLA_INFO_DATA netlink attributes + * @data: enum batadv_ifla_attrs attributes + * @extack: extended ACK report struct + * + * Return: 0 if successful or error otherwise. */ -void batadv_softif_destroy_sysfs(struct net_device *soft_iface) +static int batadv_softif_newlink(struct net *src_net, struct net_device *dev, + struct nlattr *tb[], struct nlattr *data[], + struct netlink_ext_ack *extack) { - struct batadv_priv *bat_priv = netdev_priv(soft_iface); - struct batadv_softif_vlan *vlan; - - ASSERT_RTNL(); + struct batadv_priv *bat_priv = netdev_priv(dev); + const char *algo_name; + int err; - /* destroy the "untagged" VLAN */ - vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); - if (vlan) { - batadv_softif_destroy_vlan(bat_priv, vlan); - batadv_softif_vlan_put(vlan); + if (data && data[IFLA_BATADV_ALGO_NAME]) { + algo_name = nla_data(data[IFLA_BATADV_ALGO_NAME]); + err = batadv_algo_select(bat_priv, algo_name); + if (err) + return -EINVAL; } - batadv_sysfs_del_meshif(soft_iface); - unregister_netdevice(soft_iface); + return register_netdevice(dev); } /** @@ -1110,8 +1086,7 @@ static void batadv_softif_destroy_netlink(struct net_device *soft_iface, list_for_each_entry(hard_iface, &batadv_hardif_list, list) { if (hard_iface->soft_iface == soft_iface) - batadv_hardif_disable_interface(hard_iface, - BATADV_IF_CLEANUP_KEEP); + batadv_hardif_disable_interface(hard_iface); } /* destroy the "untagged" VLAN */ @@ -1121,7 +1096,6 @@ static void batadv_softif_destroy_netlink(struct net_device *soft_iface, batadv_softif_vlan_put(vlan); } - batadv_sysfs_del_meshif(soft_iface); unregister_netdevice_queue(soft_iface, head); } @@ -1139,9 +1113,17 @@ bool batadv_softif_is_valid(const struct net_device *net_dev) return false; } +static const struct nla_policy batadv_ifla_policy[IFLA_BATADV_MAX + 1] = { + [IFLA_BATADV_ALGO_NAME] = { .type = NLA_NUL_STRING }, +}; + struct rtnl_link_ops batadv_link_ops __read_mostly = { .kind = "batadv", .priv_size = sizeof(struct batadv_priv), .setup = batadv_softif_init_early, + .maxtype = IFLA_BATADV_MAX, + .policy = batadv_ifla_policy, + .validate = batadv_softif_validate, + .newlink = batadv_softif_newlink, .dellink = batadv_softif_destroy_netlink, }; diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h index 534e08d6ad91..9f2003f1a497 100644 --- a/net/batman-adv/soft-interface.h +++ b/net/batman-adv/soft-interface.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner */ @@ -9,23 +9,34 @@ #include "main.h" +#include <linux/kref.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/types.h> -#include <net/net_namespace.h> #include <net/rtnetlink.h> int batadv_skb_head_push(struct sk_buff *skb, unsigned int len); void batadv_interface_rx(struct net_device *soft_iface, struct sk_buff *skb, int hdr_size, struct batadv_orig_node *orig_node); -struct net_device *batadv_softif_create(struct net *net, const char *name); -void batadv_softif_destroy_sysfs(struct net_device *soft_iface); bool batadv_softif_is_valid(const struct net_device *net_dev); extern struct rtnl_link_ops batadv_link_ops; int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid); -void batadv_softif_vlan_put(struct batadv_softif_vlan *softif_vlan); +void batadv_softif_vlan_release(struct kref *ref); struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, unsigned short vid); +/** + * batadv_softif_vlan_put() - decrease the vlan object refcounter and + * possibly release it + * @vlan: the vlan object to release + */ +static inline void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan) +{ + if (!vlan) + return; + + kref_put(&vlan->refcount, batadv_softif_vlan_release); +} + #endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */ diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c deleted file mode 100644 index c45962d8527b..000000000000 --- a/net/batman-adv/sysfs.c +++ /dev/null @@ -1,1271 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#include "sysfs.h" -#include "main.h" - -#include <asm/current.h> -#include <linux/atomic.h> -#include <linux/compiler.h> -#include <linux/device.h> -#include <linux/errno.h> -#include <linux/gfp.h> -#include <linux/if.h> -#include <linux/if_vlan.h> -#include <linux/kernel.h> -#include <linux/kobject.h> -#include <linux/kref.h> -#include <linux/limits.h> -#include <linux/netdevice.h> -#include <linux/printk.h> -#include <linux/rculist.h> -#include <linux/rcupdate.h> -#include <linux/rtnetlink.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/stddef.h> -#include <linux/string.h> -#include <linux/stringify.h> -#include <linux/workqueue.h> -#include <uapi/linux/batadv_packet.h> -#include <uapi/linux/batman_adv.h> - -#include "bridge_loop_avoidance.h" -#include "distributed-arp-table.h" -#include "gateway_client.h" -#include "gateway_common.h" -#include "hard-interface.h" -#include "log.h" -#include "netlink.h" -#include "network-coding.h" -#include "soft-interface.h" - -/** - * batadv_sysfs_deprecated() - Log use of deprecated batadv sysfs access - * @attr: attribute which was accessed - */ -static void batadv_sysfs_deprecated(struct attribute *attr) -{ - pr_warn_ratelimited(DEPRECATED "%s (pid %d) Use of sysfs file \"%s\".\nUse batadv genl family instead", - current->comm, task_pid_nr(current), attr->name); -} - -static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) -{ - struct device *dev = container_of(obj->parent, struct device, kobj); - - return to_net_dev(dev); -} - -static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(obj); - - return netdev_priv(net_dev); -} - -/** - * batadv_vlan_kobj_to_batpriv() - convert a vlan kobj in the associated batpriv - * @obj: kobject to covert - * - * Return: the associated batadv_priv struct. - */ -static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) -{ - /* VLAN specific attributes are located in the root sysfs folder if they - * refer to the untagged VLAN.. - */ - if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) - return batadv_kobj_to_batpriv(obj); - - /* ..while the attributes for the tagged vlans are located in - * the in the corresponding "vlan%VID" subfolder - */ - return batadv_kobj_to_batpriv(obj->parent); -} - -/** - * batadv_kobj_to_vlan() - convert a kobj in the associated softif_vlan struct - * @bat_priv: the bat priv with all the soft interface information - * @obj: kobject to covert - * - * Return: the associated softif_vlan struct if found, NULL otherwise. - */ -static struct batadv_softif_vlan * -batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) -{ - struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; - - rcu_read_lock(); - hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { - if (vlan_tmp->kobj != obj) - continue; - - if (!kref_get_unless_zero(&vlan_tmp->refcount)) - continue; - - vlan = vlan_tmp; - break; - } - rcu_read_unlock(); - - return vlan; -} - -/* Use this, if you have customized show and store functions for vlan attrs */ -#define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ -struct batadv_attribute batadv_attr_vlan_##_name = { \ - .attr = {.name = __stringify(_name), \ - .mode = _mode }, \ - .show = _show, \ - .store = _store, \ -} - -/* Use this, if you have customized show and store functions */ -#define BATADV_ATTR(_name, _mode, _show, _store) \ -struct batadv_attribute batadv_attr_##_name = { \ - .attr = {.name = __stringify(_name), \ - .mode = _mode }, \ - .show = _show, \ - .store = _store, \ -} - -#define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ -ssize_t batadv_store_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_priv *bat_priv = netdev_priv(net_dev); \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - length = __batadv_store_bool_attr(buff, count, _post_func, attr,\ - &bat_priv->_name, net_dev); \ - \ - batadv_netlink_notify_mesh(bat_priv); \ - \ - return length; \ -} - -#define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ -ssize_t batadv_show_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ - \ - batadv_sysfs_deprecated(attr); \ - return sprintf(buff, "%s\n", \ - atomic_read(&bat_priv->_name) == 0 ? \ - "disabled" : "enabled"); \ -} \ - -/* Use this, if you are going to turn a [name] in the soft-interface - * (bat_priv) on or off - */ -#define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \ - static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ - static BATADV_ATTR_SIF_SHOW_BOOL(_name) \ - static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ - batadv_store_##_name) - -#define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ -ssize_t batadv_store_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_priv *bat_priv = netdev_priv(net_dev); \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - length = __batadv_store_uint_attr(buff, count, _min, _max, \ - _post_func, attr, \ - &bat_priv->_var, net_dev, \ - NULL); \ - \ - batadv_netlink_notify_mesh(bat_priv); \ - \ - return length; \ -} - -#define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ -ssize_t batadv_show_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ - \ - batadv_sysfs_deprecated(attr); \ - return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ -} \ - -/* Use this, if you are going to set [name] in the soft-interface - * (bat_priv) to an unsigned integer value - */ -#define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ - static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\ - static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ - static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ - batadv_store_##_name) - -#define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ -ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ - struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ - kobj); \ - size_t res = __batadv_store_bool_attr(buff, count, _post_func, \ - attr, &vlan->_name, \ - bat_priv->soft_iface); \ - \ - batadv_sysfs_deprecated(attr); \ - if (vlan->vid) \ - batadv_netlink_notify_vlan(bat_priv, vlan); \ - else \ - batadv_netlink_notify_mesh(bat_priv); \ - \ - batadv_softif_vlan_put(vlan); \ - return res; \ -} - -#define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ -ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ - struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ - kobj); \ - size_t res = sprintf(buff, "%s\n", \ - atomic_read(&vlan->_name) == 0 ? \ - "disabled" : "enabled"); \ - \ - batadv_sysfs_deprecated(attr); \ - batadv_softif_vlan_put(vlan); \ - return res; \ -} - -/* Use this, if you are going to turn a [name] in the vlan struct on or off */ -#define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \ - static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ - static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ - static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \ - batadv_store_vlan_##_name) - -#define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ -ssize_t batadv_store_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_hard_iface *hard_iface; \ - struct batadv_priv *bat_priv; \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - hard_iface = batadv_hardif_get_by_netdev(net_dev); \ - if (!hard_iface) \ - return 0; \ - \ - length = __batadv_store_uint_attr(buff, count, _min, _max, \ - _post_func, attr, \ - &hard_iface->_var, \ - hard_iface->soft_iface, \ - net_dev); \ - \ - if (hard_iface->soft_iface) { \ - bat_priv = netdev_priv(hard_iface->soft_iface); \ - batadv_netlink_notify_hardif(bat_priv, hard_iface); \ - } \ - \ - batadv_hardif_put(hard_iface); \ - return length; \ -} - -#define BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ -ssize_t batadv_show_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_hard_iface *hard_iface; \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - hard_iface = batadv_hardif_get_by_netdev(net_dev); \ - if (!hard_iface) \ - return 0; \ - \ - length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var)); \ - \ - batadv_hardif_put(hard_iface); \ - return length; \ -} - -/* Use this, if you are going to set [name] in hard_iface to an - * unsigned integer value - */ -#define BATADV_ATTR_HIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ - static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, \ - _max, _post_func) \ - static BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ - static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ - batadv_store_##_name) - -static int batadv_store_bool_attr(char *buff, size_t count, - struct net_device *net_dev, - const char *attr_name, atomic_t *attr, - bool *changed) -{ - int enabled = -1; - - *changed = false; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if ((strncmp(buff, "1", 2) == 0) || - (strncmp(buff, "enable", 7) == 0) || - (strncmp(buff, "enabled", 8) == 0)) - enabled = 1; - - if ((strncmp(buff, "0", 2) == 0) || - (strncmp(buff, "disable", 8) == 0) || - (strncmp(buff, "disabled", 9) == 0)) - enabled = 0; - - if (enabled < 0) { - batadv_info(net_dev, "%s: Invalid parameter received: %s\n", - attr_name, buff); - return -EINVAL; - } - - if (atomic_read(attr) == enabled) - return count; - - batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, - atomic_read(attr) == 1 ? "enabled" : "disabled", - enabled == 1 ? "enabled" : "disabled"); - - *changed = true; - - atomic_set(attr, (unsigned int)enabled); - return count; -} - -static inline ssize_t -__batadv_store_bool_attr(char *buff, size_t count, - void (*post_func)(struct net_device *), - struct attribute *attr, - atomic_t *attr_store, struct net_device *net_dev) -{ - bool changed; - int ret; - - ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, - attr_store, &changed); - if (post_func && changed) - post_func(net_dev); - - return ret; -} - -static int batadv_store_uint_attr(const char *buff, size_t count, - struct net_device *net_dev, - struct net_device *slave_dev, - const char *attr_name, - unsigned int min, unsigned int max, - atomic_t *attr) -{ - char ifname[IFNAMSIZ + 3] = ""; - unsigned long uint_val; - int ret; - - ret = kstrtoul(buff, 10, &uint_val); - if (ret) { - batadv_info(net_dev, "%s: Invalid parameter received: %s\n", - attr_name, buff); - return -EINVAL; - } - - if (uint_val < min) { - batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", - attr_name, uint_val, min); - return -EINVAL; - } - - if (uint_val > max) { - batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", - attr_name, uint_val, max); - return -EINVAL; - } - - if (atomic_read(attr) == uint_val) - return count; - - if (slave_dev) - snprintf(ifname, sizeof(ifname), "%s: ", slave_dev->name); - - batadv_info(net_dev, "%s: %sChanging from: %i to: %lu\n", - attr_name, ifname, atomic_read(attr), uint_val); - - atomic_set(attr, uint_val); - return count; -} - -static ssize_t __batadv_store_uint_attr(const char *buff, size_t count, - int min, int max, - void (*post_func)(struct net_device *), - const struct attribute *attr, - atomic_t *attr_store, - struct net_device *net_dev, - struct net_device *slave_dev) -{ - int ret; - - ret = batadv_store_uint_attr(buff, count, net_dev, slave_dev, - attr->name, min, max, attr_store); - if (post_func && ret) - post_func(net_dev); - - return ret; -} - -static ssize_t batadv_show_bat_algo(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - - batadv_sysfs_deprecated(attr); - return sprintf(buff, "%s\n", bat_priv->algo_ops->name); -} - -static void batadv_post_gw_reselect(struct net_device *net_dev) -{ - struct batadv_priv *bat_priv = netdev_priv(net_dev); - - batadv_gw_reselect(bat_priv); -} - -static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - int bytes_written; - - batadv_sysfs_deprecated(attr); - - /* GW mode is not available if the routing algorithm in use does not - * implement the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -ENOENT; - - switch (atomic_read(&bat_priv->gw.mode)) { - case BATADV_GW_MODE_CLIENT: - bytes_written = sprintf(buff, "%s\n", - BATADV_GW_MODE_CLIENT_NAME); - break; - case BATADV_GW_MODE_SERVER: - bytes_written = sprintf(buff, "%s\n", - BATADV_GW_MODE_SERVER_NAME); - break; - default: - bytes_written = sprintf(buff, "%s\n", - BATADV_GW_MODE_OFF_NAME); - break; - } - - return bytes_written; -} - -static ssize_t batadv_store_gw_mode(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_priv *bat_priv = netdev_priv(net_dev); - char *curr_gw_mode_str; - int gw_mode_tmp = -1; - - batadv_sysfs_deprecated(attr); - - /* toggling GW mode is allowed only if the routing algorithm in use - * provides the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -EINVAL; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, - strlen(BATADV_GW_MODE_OFF_NAME)) == 0) - gw_mode_tmp = BATADV_GW_MODE_OFF; - - if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, - strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) - gw_mode_tmp = BATADV_GW_MODE_CLIENT; - - if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, - strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) - gw_mode_tmp = BATADV_GW_MODE_SERVER; - - if (gw_mode_tmp < 0) { - batadv_info(net_dev, - "Invalid parameter for 'gw mode' setting received: %s\n", - buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->gw.mode) == gw_mode_tmp) - return count; - - switch (atomic_read(&bat_priv->gw.mode)) { - case BATADV_GW_MODE_CLIENT: - curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; - break; - case BATADV_GW_MODE_SERVER: - curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; - break; - default: - curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; - break; - } - - batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", - curr_gw_mode_str, buff); - - /* Invoking batadv_gw_reselect() is not enough to really de-select the - * current GW. It will only instruct the gateway client code to perform - * a re-election the next time that this is needed. - * - * When gw client mode is being switched off the current GW must be - * de-selected explicitly otherwise no GW_ADD uevent is thrown on - * client mode re-activation. This is operation is performed in - * batadv_gw_check_client_stop(). - */ - batadv_gw_reselect(bat_priv); - /* always call batadv_gw_check_client_stop() before changing the gateway - * state - */ - batadv_gw_check_client_stop(bat_priv); - atomic_set(&bat_priv->gw.mode, (unsigned int)gw_mode_tmp); - batadv_gw_tvlv_container_update(bat_priv); - - batadv_netlink_notify_mesh(bat_priv); - - return count; -} - -static ssize_t batadv_show_gw_sel_class(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - - batadv_sysfs_deprecated(attr); - - /* GW selection class is not available if the routing algorithm in use - * does not implement the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -ENOENT; - - if (bat_priv->algo_ops->gw.show_sel_class) - return bat_priv->algo_ops->gw.show_sel_class(bat_priv, buff); - - return sprintf(buff, "%i\n", atomic_read(&bat_priv->gw.sel_class)); -} - -static ssize_t batadv_store_gw_sel_class(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - ssize_t length; - - batadv_sysfs_deprecated(attr); - - /* setting the GW selection class is allowed only if the routing - * algorithm in use implements the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -EINVAL; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if (bat_priv->algo_ops->gw.store_sel_class) - return bat_priv->algo_ops->gw.store_sel_class(bat_priv, buff, - count); - - length = __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE, - batadv_post_gw_reselect, attr, - &bat_priv->gw.sel_class, - bat_priv->soft_iface, NULL); - - batadv_netlink_notify_mesh(bat_priv); - - return length; -} - -static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - u32 down, up; - - batadv_sysfs_deprecated(attr); - - down = atomic_read(&bat_priv->gw.bandwidth_down); - up = atomic_read(&bat_priv->gw.bandwidth_up); - - return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10, - down % 10, up / 10, up % 10); -} - -static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - ssize_t length; - - batadv_sysfs_deprecated(attr); - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - length = batadv_gw_bandwidth_set(net_dev, buff, count); - - batadv_netlink_notify_mesh(bat_priv); - - return length; -} - -/** - * batadv_show_isolation_mark() - print the current isolation mark/mask - * @kobj: kobject representing the private mesh sysfs directory - * @attr: the batman-adv attribute the user is interacting with - * @buff: the buffer that will contain the data to send back to the user - * - * Return: the number of bytes written into 'buff' on success or a negative - * error code in case of failure - */ -static ssize_t batadv_show_isolation_mark(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - - batadv_sysfs_deprecated(attr); - return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark, - bat_priv->isolation_mark_mask); -} - -/** - * batadv_store_isolation_mark() - parse and store the isolation mark/mask - * entered by the user - * @kobj: kobject representing the private mesh sysfs directory - * @attr: the batman-adv attribute the user is interacting with - * @buff: the buffer containing the user data - * @count: number of bytes in the buffer - * - * Return: 'count' on success or a negative error code in case of failure - */ -static ssize_t batadv_store_isolation_mark(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_priv *bat_priv = netdev_priv(net_dev); - u32 mark, mask; - char *mask_ptr; - - batadv_sysfs_deprecated(attr); - - /* parse the mask if it has been specified, otherwise assume the mask is - * the biggest possible - */ - mask = 0xFFFFFFFF; - mask_ptr = strchr(buff, '/'); - if (mask_ptr) { - *mask_ptr = '\0'; - mask_ptr++; - - /* the mask must be entered in hex base as it is going to be a - * bitmask and not a prefix length - */ - if (kstrtou32(mask_ptr, 16, &mask) < 0) - return -EINVAL; - } - - /* the mark can be entered in any base */ - if (kstrtou32(buff, 0, &mark) < 0) - return -EINVAL; - - bat_priv->isolation_mark_mask = mask; - /* erase bits not covered by the mask */ - bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask; - - batadv_info(net_dev, - "New skb mark for extended isolation: %#.8x/%#.8x\n", - bat_priv->isolation_mark, bat_priv->isolation_mark_mask); - - batadv_netlink_notify_mesh(bat_priv); - - return count; -} - -BATADV_ATTR_SIF_BOOL(aggregated_ogms, 0644, NULL); -BATADV_ATTR_SIF_BOOL(bonding, 0644, NULL); -#ifdef CONFIG_BATMAN_ADV_BLA -BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, 0644, batadv_bla_status_update); -#endif -#ifdef CONFIG_BATMAN_ADV_DAT -BATADV_ATTR_SIF_BOOL(distributed_arp_table, 0644, batadv_dat_status_update); -#endif -BATADV_ATTR_SIF_BOOL(fragmentation, 0644, batadv_update_min_mtu); -static BATADV_ATTR(routing_algo, 0444, batadv_show_bat_algo, NULL); -static BATADV_ATTR(gw_mode, 0644, batadv_show_gw_mode, batadv_store_gw_mode); -BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, 0644, 2 * BATADV_JITTER, - INT_MAX, NULL); -BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, 0644, 0, BATADV_TQ_MAX_VALUE, - NULL); -static BATADV_ATTR(gw_sel_class, 0644, batadv_show_gw_sel_class, - batadv_store_gw_sel_class); -static BATADV_ATTR(gw_bandwidth, 0644, batadv_show_gw_bwidth, - batadv_store_gw_bwidth); -#ifdef CONFIG_BATMAN_ADV_MCAST -BATADV_ATTR_SIF_BOOL(multicast_mode, 0644, NULL); -#endif -#ifdef CONFIG_BATMAN_ADV_DEBUG -BATADV_ATTR_SIF_UINT(log_level, log_level, 0644, 0, BATADV_DBG_ALL, NULL); -#endif -#ifdef CONFIG_BATMAN_ADV_NC -BATADV_ATTR_SIF_BOOL(network_coding, 0644, batadv_nc_status_update); -#endif -static BATADV_ATTR(isolation_mark, 0644, batadv_show_isolation_mark, - batadv_store_isolation_mark); - -static struct batadv_attribute *batadv_mesh_attrs[] = { - &batadv_attr_aggregated_ogms, - &batadv_attr_bonding, -#ifdef CONFIG_BATMAN_ADV_BLA - &batadv_attr_bridge_loop_avoidance, -#endif -#ifdef CONFIG_BATMAN_ADV_DAT - &batadv_attr_distributed_arp_table, -#endif -#ifdef CONFIG_BATMAN_ADV_MCAST - &batadv_attr_multicast_mode, -#endif - &batadv_attr_fragmentation, - &batadv_attr_routing_algo, - &batadv_attr_gw_mode, - &batadv_attr_orig_interval, - &batadv_attr_hop_penalty, - &batadv_attr_gw_sel_class, - &batadv_attr_gw_bandwidth, -#ifdef CONFIG_BATMAN_ADV_DEBUG - &batadv_attr_log_level, -#endif -#ifdef CONFIG_BATMAN_ADV_NC - &batadv_attr_network_coding, -#endif - &batadv_attr_isolation_mark, - NULL, -}; - -BATADV_ATTR_VLAN_BOOL(ap_isolation, 0644, NULL); - -/* array of vlan specific sysfs attributes */ -static struct batadv_attribute *batadv_vlan_attrs[] = { - &batadv_attr_vlan_ap_isolation, - NULL, -}; - -/** - * batadv_sysfs_add_meshif() - Add soft interface specific sysfs entries - * @dev: netdev struct of the soft interface - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_sysfs_add_meshif(struct net_device *dev) -{ - struct kobject *batif_kobject = &dev->dev.kobj; - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_attribute **bat_attr; - int err; - - bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, - batif_kobject); - if (!bat_priv->mesh_obj) { - batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, - BATADV_SYSFS_IF_MESH_SUBDIR); - goto out; - } - - for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(bat_priv->mesh_obj, - &((*bat_attr)->attr)); - if (err) { - batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); - - kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); - kobject_del(bat_priv->mesh_obj); - kobject_put(bat_priv->mesh_obj); - bat_priv->mesh_obj = NULL; -out: - return -ENOMEM; -} - -/** - * batadv_sysfs_del_meshif() - Remove soft interface specific sysfs entries - * @dev: netdev struct of the soft interface - */ -void batadv_sysfs_del_meshif(struct net_device *dev) -{ - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_attribute **bat_attr; - - for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); - - kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); - kobject_del(bat_priv->mesh_obj); - kobject_put(bat_priv->mesh_obj); - bat_priv->mesh_obj = NULL; -} - -/** - * batadv_sysfs_add_vlan() - add all the needed sysfs objects for the new vlan - * @dev: netdev of the mesh interface - * @vlan: private data of the newly added VLAN interface - * - * Return: 0 on success and -ENOMEM if any of the structure allocations fails. - */ -int batadv_sysfs_add_vlan(struct net_device *dev, - struct batadv_softif_vlan *vlan) -{ - char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5]; - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_attribute **bat_attr; - int err; - - if (vlan->vid & BATADV_VLAN_HAS_TAG) { - sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu", - vlan->vid & VLAN_VID_MASK); - - vlan->kobj = kobject_create_and_add(vlan_subdir, - bat_priv->mesh_obj); - if (!vlan->kobj) { - batadv_err(dev, "Can't add sysfs directory: %s/%s\n", - dev->name, vlan_subdir); - goto out; - } - } else { - /* the untagged LAN uses the root folder to store its "VLAN - * specific attributes" - */ - vlan->kobj = bat_priv->mesh_obj; - kobject_get(bat_priv->mesh_obj); - } - - for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(vlan->kobj, - &((*bat_attr)->attr)); - if (err) { - batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, vlan_subdir, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); - - if (vlan->kobj != bat_priv->mesh_obj) { - kobject_uevent(vlan->kobj, KOBJ_REMOVE); - kobject_del(vlan->kobj); - } - kobject_put(vlan->kobj); - vlan->kobj = NULL; -out: - return -ENOMEM; -} - -/** - * batadv_sysfs_del_vlan() - remove all the sysfs objects for a given VLAN - * @bat_priv: the bat priv with all the soft interface information - * @vlan: the private data of the VLAN to destroy - */ -void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) -{ - struct batadv_attribute **bat_attr; - - for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); - - if (vlan->kobj != bat_priv->mesh_obj) { - kobject_uevent(vlan->kobj, KOBJ_REMOVE); - kobject_del(vlan->kobj); - } - kobject_put(vlan->kobj); - vlan->kobj = NULL; -} - -static ssize_t batadv_show_mesh_iface(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - ssize_t length; - const char *ifname; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return 0; - - if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) - ifname = "none"; - else - ifname = hard_iface->soft_iface->name; - - length = sprintf(buff, "%s\n", ifname); - - batadv_hardif_put(hard_iface); - - return length; -} - -/** - * batadv_store_mesh_iface_finish() - store new hardif mesh_iface state - * @net_dev: netdevice to add/remove to/from batman-adv soft-interface - * @ifname: name of soft-interface to modify - * - * Changes the parts of the hard+soft interface which can not be modified under - * sysfs lock (to prevent deadlock situations). - * - * Return: 0 on success, 0 < on failure - */ -static int batadv_store_mesh_iface_finish(struct net_device *net_dev, - char ifname[IFNAMSIZ]) -{ - struct net *net = dev_net(net_dev); - struct batadv_hard_iface *hard_iface; - int status_tmp; - int ret = 0; - - ASSERT_RTNL(); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return 0; - - if (strncmp(ifname, "none", 4) == 0) - status_tmp = BATADV_IF_NOT_IN_USE; - else - status_tmp = BATADV_IF_I_WANT_YOU; - - if (hard_iface->if_status == status_tmp) - goto out; - - if (hard_iface->soft_iface && - strncmp(hard_iface->soft_iface->name, ifname, IFNAMSIZ) == 0) - goto out; - - if (status_tmp == BATADV_IF_NOT_IN_USE) { - batadv_hardif_disable_interface(hard_iface, - BATADV_IF_CLEANUP_AUTO); - goto out; - } - - /* if the interface already is in use */ - if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) - batadv_hardif_disable_interface(hard_iface, - BATADV_IF_CLEANUP_AUTO); - - ret = batadv_hardif_enable_interface(hard_iface, net, ifname); -out: - batadv_hardif_put(hard_iface); - return ret; -} - -/** - * batadv_store_mesh_iface_work() - store new hardif mesh_iface state - * @work: work queue item - * - * Changes the parts of the hard+soft interface which can not be modified under - * sysfs lock (to prevent deadlock situations). - */ -static void batadv_store_mesh_iface_work(struct work_struct *work) -{ - struct batadv_store_mesh_work *store_work; - int ret; - - store_work = container_of(work, struct batadv_store_mesh_work, work); - - rtnl_lock(); - ret = batadv_store_mesh_iface_finish(store_work->net_dev, - store_work->soft_iface_name); - rtnl_unlock(); - - if (ret < 0) - pr_err("Failed to store new mesh_iface state %s for %s: %d\n", - store_work->soft_iface_name, store_work->net_dev->name, - ret); - - dev_put(store_work->net_dev); - kfree(store_work); -} - -static ssize_t batadv_store_mesh_iface(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_store_mesh_work *store_work; - - batadv_sysfs_deprecated(attr); - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if (strlen(buff) >= IFNAMSIZ) { - pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", - buff); - return -EINVAL; - } - - store_work = kmalloc(sizeof(*store_work), GFP_KERNEL); - if (!store_work) - return -ENOMEM; - - dev_hold(net_dev); - INIT_WORK(&store_work->work, batadv_store_mesh_iface_work); - store_work->net_dev = net_dev; - strscpy(store_work->soft_iface_name, buff, - sizeof(store_work->soft_iface_name)); - - queue_work(batadv_event_workqueue, &store_work->work); - - return count; -} - -static ssize_t batadv_show_iface_status(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - ssize_t length; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return 0; - - switch (hard_iface->if_status) { - case BATADV_IF_TO_BE_REMOVED: - length = sprintf(buff, "disabling\n"); - break; - case BATADV_IF_INACTIVE: - length = sprintf(buff, "inactive\n"); - break; - case BATADV_IF_ACTIVE: - length = sprintf(buff, "active\n"); - break; - case BATADV_IF_TO_BE_ACTIVATED: - length = sprintf(buff, "enabling\n"); - break; - case BATADV_IF_NOT_IN_USE: - default: - length = sprintf(buff, "not in use\n"); - break; - } - - batadv_hardif_put(hard_iface); - - return length; -} - -#ifdef CONFIG_BATMAN_ADV_BATMAN_V - -/** - * batadv_store_throughput_override() - parse and store throughput override - * entered by the user - * @kobj: kobject representing the private mesh sysfs directory - * @attr: the batman-adv attribute the user is interacting with - * @buff: the buffer containing the user data - * @count: number of bytes in the buffer - * - * Return: 'count' on success or a negative error code in case of failure - */ -static ssize_t batadv_store_throughput_override(struct kobject *kobj, - struct attribute *attr, - char *buff, size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - struct batadv_priv *bat_priv; - u32 tp_override; - u32 old_tp_override; - bool ret; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return -EINVAL; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - ret = batadv_parse_throughput(net_dev, buff, "throughput_override", - &tp_override); - if (!ret) - return count; - - old_tp_override = atomic_read(&hard_iface->bat_v.throughput_override); - if (old_tp_override == tp_override) - goto out; - - batadv_info(hard_iface->soft_iface, - "%s: %s: Changing from: %u.%u MBit to: %u.%u MBit\n", - "throughput_override", net_dev->name, - old_tp_override / 10, old_tp_override % 10, - tp_override / 10, tp_override % 10); - - atomic_set(&hard_iface->bat_v.throughput_override, tp_override); - - if (hard_iface->soft_iface) { - bat_priv = netdev_priv(hard_iface->soft_iface); - batadv_netlink_notify_hardif(bat_priv, hard_iface); - } - -out: - batadv_hardif_put(hard_iface); - return count; -} - -static ssize_t batadv_show_throughput_override(struct kobject *kobj, - struct attribute *attr, - char *buff) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - u32 tp_override; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return -EINVAL; - - tp_override = atomic_read(&hard_iface->bat_v.throughput_override); - - return sprintf(buff, "%u.%u MBit\n", tp_override / 10, - tp_override % 10); -} - -#endif - -static BATADV_ATTR(mesh_iface, 0644, batadv_show_mesh_iface, - batadv_store_mesh_iface); -static BATADV_ATTR(iface_status, 0444, batadv_show_iface_status, NULL); -#ifdef CONFIG_BATMAN_ADV_BATMAN_V -BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, 0644, - 2 * BATADV_JITTER, INT_MAX, NULL); -static BATADV_ATTR(throughput_override, 0644, batadv_show_throughput_override, - batadv_store_throughput_override); -#endif - -static struct batadv_attribute *batadv_batman_attrs[] = { - &batadv_attr_mesh_iface, - &batadv_attr_iface_status, -#ifdef CONFIG_BATMAN_ADV_BATMAN_V - &batadv_attr_elp_interval, - &batadv_attr_throughput_override, -#endif - NULL, -}; - -/** - * batadv_sysfs_add_hardif() - Add hard interface specific sysfs entries - * @hardif_obj: address where to store the pointer to new sysfs folder - * @dev: netdev struct of the hard interface - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) -{ - struct kobject *hardif_kobject = &dev->dev.kobj; - struct batadv_attribute **bat_attr; - int err; - - *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, - hardif_kobject); - - if (!*hardif_obj) { - batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, - BATADV_SYSFS_IF_BAT_SUBDIR); - goto out; - } - - for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); - if (err) { - batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); -out: - return -ENOMEM; -} - -/** - * batadv_sysfs_del_hardif() - Remove hard interface specific sysfs entries - * @hardif_obj: address to the pointer to which stores batman-adv sysfs folder - * of the hard interface - */ -void batadv_sysfs_del_hardif(struct kobject **hardif_obj) -{ - kobject_uevent(*hardif_obj, KOBJ_REMOVE); - kobject_del(*hardif_obj); - kobject_put(*hardif_obj); - *hardif_obj = NULL; -} diff --git a/net/batman-adv/sysfs.h b/net/batman-adv/sysfs.h deleted file mode 100644 index d987f8b30a98..000000000000 --- a/net/batman-adv/sysfs.h +++ /dev/null @@ -1,93 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#ifndef _NET_BATMAN_ADV_SYSFS_H_ -#define _NET_BATMAN_ADV_SYSFS_H_ - -#include "main.h" - -#include <linux/kobject.h> -#include <linux/netdevice.h> -#include <linux/sysfs.h> -#include <linux/types.h> - -#define BATADV_SYSFS_IF_MESH_SUBDIR "mesh" -#define BATADV_SYSFS_IF_BAT_SUBDIR "batman_adv" -/** - * BATADV_SYSFS_VLAN_SUBDIR_PREFIX - prefix of the subfolder that will be - * created in the sysfs hierarchy for each VLAN interface. The subfolder will - * be named "BATADV_SYSFS_VLAN_SUBDIR_PREFIX%vid". - */ -#define BATADV_SYSFS_VLAN_SUBDIR_PREFIX "vlan" - -/** - * struct batadv_attribute - sysfs export helper for batman-adv attributes - */ -struct batadv_attribute { - /** @attr: sysfs attribute file */ - struct attribute attr; - - /** - * @show: function to export the current attribute's content to sysfs - */ - ssize_t (*show)(struct kobject *kobj, struct attribute *attr, - char *buf); - - /** - * @store: function to load new value from character buffer and save it - * in batman-adv attribute - */ - ssize_t (*store)(struct kobject *kobj, struct attribute *attr, - char *buf, size_t count); -}; - -#ifdef CONFIG_BATMAN_ADV_SYSFS - -int batadv_sysfs_add_meshif(struct net_device *dev); -void batadv_sysfs_del_meshif(struct net_device *dev); -int batadv_sysfs_add_hardif(struct kobject **hardif_obj, - struct net_device *dev); -void batadv_sysfs_del_hardif(struct kobject **hardif_obj); -int batadv_sysfs_add_vlan(struct net_device *dev, - struct batadv_softif_vlan *vlan); -void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan); - -#else - -static inline int batadv_sysfs_add_meshif(struct net_device *dev) -{ - return 0; -} - -static inline void batadv_sysfs_del_meshif(struct net_device *dev) -{ -} - -static inline int batadv_sysfs_add_hardif(struct kobject **hardif_obj, - struct net_device *dev) -{ - return 0; -} - -static inline void batadv_sysfs_del_hardif(struct kobject **hardif_obj) -{ -} - -static inline int batadv_sysfs_add_vlan(struct net_device *dev, - struct batadv_softif_vlan *vlan) -{ - return 0; -} - -static inline void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) -{ -} - -#endif - -#endif /* _NET_BATMAN_ADV_SYSFS_H_ */ diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c index bd2ac570c42c..7f3dd3c393e0 100644 --- a/net/batman-adv/tp_meter.c +++ b/net/batman-adv/tp_meter.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2012-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Edo Monticelli, Antonio Quartulli */ @@ -12,17 +12,18 @@ #include <linux/byteorder/generic.h> #include <linux/cache.h> #include <linux/compiler.h> +#include <linux/container_of.h> #include <linux/err.h> #include <linux/etherdevice.h> #include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/kthread.h> #include <linux/limits.h> #include <linux/list.h> +#include <linux/minmax.h> #include <linux/netdevice.h> #include <linux/param.h> #include <linux/printk.h> @@ -66,7 +67,7 @@ /** * BATADV_TP_MAX_RTO - Maximum sender timeout. If the sender RTO gets beyond - * such amound of milliseconds, the receiver is considered unreachable and the + * such amount of milliseconds, the receiver is considered unreachable and the * connection is killed */ #define BATADV_TP_MAX_RTO 30000 @@ -108,10 +109,10 @@ static u32 batadv_tp_session_cookie(const u8 session[2], u8 icmp_uid) * batadv_tp_cwnd() - compute the new cwnd size * @base: base cwnd size value * @increment: the value to add to base to get the new size - * @min: minumim cwnd value (usually MSS) + * @min: minimum cwnd value (usually MSS) * - * Return the new cwnd size and ensures it does not exceed the Advertised - * Receiver Window size. It is wrap around safe. + * Return the new cwnd size and ensure it does not exceed the Advertised + * Receiver Window size. It is wrapped around safely. * For details refer to Section 3.1 of RFC5681 * * Return: new congestion window size in bytes @@ -130,7 +131,7 @@ static u32 batadv_tp_cwnd(u32 base, u32 increment, u32 min) } /** - * batadv_tp_updated_cwnd() - update the Congestion Windows + * batadv_tp_update_cwnd() - update the Congestion Windows * @tp_vars: the private data of the current TP meter session * @mss: maximum segment size of transmission * @@ -254,7 +255,7 @@ static void batadv_tp_batctl_error_notify(enum batadv_tp_meter_reason reason, * @dst: the other endpoint MAC address to look for * * Look for a tp_vars object matching dst as end_point and return it after - * having incremented the refcounter. Return NULL is not found + * having increment the refcounter. Return NULL is not found * * Return: matching tp_vars or NULL when no tp_vars with @dst was found */ @@ -291,7 +292,7 @@ static struct batadv_tp_vars *batadv_tp_list_find(struct batadv_priv *bat_priv, * @session: session identifier * * Look for a tp_vars object matching dst as end_point, session as tp meter - * session and return it after having incremented the refcounter. Return NULL + * session and return it after having increment the refcounter. Return NULL * is not found * * Return: matching tp_vars or NULL when no tp_vars was found @@ -357,6 +358,9 @@ static void batadv_tp_vars_release(struct kref *ref) */ static void batadv_tp_vars_put(struct batadv_tp_vars *tp_vars) { + if (!tp_vars) + return; + kref_put(&tp_vars->refcount, batadv_tp_vars_release); } @@ -627,9 +631,9 @@ static void batadv_tp_recv_ack(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node = NULL; const struct batadv_icmp_tp_packet *icmp; struct batadv_tp_vars *tp_vars; + const unsigned char *dev_addr; size_t packet_len, mss; u32 rtt, recv_ack, cwnd; - unsigned char *dev_addr; packet_len = BATADV_TP_PLEN; mss = BATADV_TP_PLEN; @@ -747,12 +751,9 @@ move_twnd: wake_up(&tp_vars->more_bytes); out: - if (likely(primary_if)) - batadv_hardif_put(primary_if); - if (likely(orig_node)) - batadv_orig_node_put(orig_node); - if (likely(tp_vars)) - batadv_tp_vars_put(tp_vars); + batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); + batadv_tp_vars_put(tp_vars); } /** @@ -881,17 +882,15 @@ static int batadv_tp_send(void *arg) } out: - if (likely(primary_if)) - batadv_hardif_put(primary_if); - if (likely(orig_node)) - batadv_orig_node_put(orig_node); + batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); batadv_tp_sender_end(bat_priv, tp_vars); batadv_tp_sender_cleanup(bat_priv, tp_vars); batadv_tp_vars_put(tp_vars); - do_exit(0); + return 0; } /** @@ -1204,10 +1203,8 @@ static int batadv_tp_send_ack(struct batadv_priv *bat_priv, const u8 *dst, ret = 0; out: - if (likely(orig_node)) - batadv_orig_node_put(orig_node); - if (likely(primary_if)) - batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); + batadv_hardif_put(primary_if); return ret; } @@ -1455,8 +1452,7 @@ send_ack: batadv_tp_send_ack(bat_priv, icmp->orig, tp_vars->last_recv, icmp->timestamp, icmp->session, icmp->uid); out: - if (likely(tp_vars)) - batadv_tp_vars_put(tp_vars); + batadv_tp_vars_put(tp_vars); } /** diff --git a/net/batman-adv/tp_meter.h b/net/batman-adv/tp_meter.h index 140105215aa2..f0046d366eac 100644 --- a/net/batman-adv/tp_meter.h +++ b/net/batman-adv/tp_meter.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2012-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Edo Monticelli, Antonio Quartulli */ diff --git a/net/batman-adv/trace.c b/net/batman-adv/trace.c index 3444d9e4e90d..ec8b9519076b 100644 --- a/net/batman-adv/trace.c +++ b/net/batman-adv/trace.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Sven Eckelmann */ diff --git a/net/batman-adv/trace.h b/net/batman-adv/trace.h index f631b1e01b89..5dd52bc5cabb 100644 --- a/net/batman-adv/trace.h +++ b/net/batman-adv/trace.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Sven Eckelmann */ @@ -9,13 +9,10 @@ #include "main.h" -#include <linux/bug.h> -#include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/percpu.h> #include <linux/printk.h> #include <linux/tracepoint.h> -#include <linux/types.h> #undef TRACE_SYSTEM #define TRACE_SYSTEM batadv @@ -29,8 +26,6 @@ #endif /* CONFIG_BATMAN_ADV_TRACING */ -#define BATADV_MAX_MSG_LEN 256 - TRACE_EVENT(batadv_dbg, TP_PROTO(struct batadv_priv *bat_priv, @@ -41,16 +36,13 @@ TRACE_EVENT(batadv_dbg, TP_STRUCT__entry( __string(device, bat_priv->soft_iface->name) __string(driver, KBUILD_MODNAME) - __dynamic_array(char, msg, BATADV_MAX_MSG_LEN) + __vstring(msg, vaf->fmt, vaf->va) ), TP_fast_assign( __assign_str(device, bat_priv->soft_iface->name); __assign_str(driver, KBUILD_MODNAME); - WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg), - BATADV_MAX_MSG_LEN, - vaf->fmt, - *vaf->va) >= BATADV_MAX_MSG_LEN); + __assign_vstr(msg, vaf->fmt, vaf->va); ), TP_printk( diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 852932838ddc..01d30c1e412c 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich, Antonio Quartulli */ @@ -13,6 +13,7 @@ #include <linux/byteorder/generic.h> #include <linux/cache.h> #include <linux/compiler.h> +#include <linux/container_of.h> #include <linux/crc32c.h> #include <linux/errno.h> #include <linux/etherdevice.h> @@ -21,7 +22,6 @@ #include <linux/init.h> #include <linux/jhash.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> @@ -30,7 +30,6 @@ #include <linux/netlink.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -104,10 +103,10 @@ static bool batadv_compare_tt(const struct hlist_node *node, const void *data2) */ static inline u32 batadv_choose_tt(const void *data, u32 size) { - struct batadv_tt_common_entry *tt; + const struct batadv_tt_common_entry *tt; u32 hash = 0; - tt = (struct batadv_tt_common_entry *)data; + tt = data; hash = jhash(&tt->addr, ETH_ALEN, hash); hash = jhash(&tt->vid, sizeof(tt->vid), hash); @@ -248,6 +247,9 @@ static void batadv_tt_local_entry_release(struct kref *ref) static void batadv_tt_local_entry_put(struct batadv_tt_local_entry *tt_local_entry) { + if (!tt_local_entry) + return; + kref_put(&tt_local_entry->common.refcount, batadv_tt_local_entry_release); } @@ -271,7 +273,7 @@ static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu) * queue for free after rcu grace period * @ref: kref pointer of the nc_node */ -static void batadv_tt_global_entry_release(struct kref *ref) +void batadv_tt_global_entry_release(struct kref *ref) { struct batadv_tt_global_entry *tt_global_entry; @@ -284,24 +286,13 @@ static void batadv_tt_global_entry_release(struct kref *ref) } /** - * batadv_tt_global_entry_put() - decrement the tt_global_entry refcounter and - * possibly release it - * @tt_global_entry: tt_global_entry to be free'd - */ -void batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry) -{ - kref_put(&tt_global_entry->common.refcount, - batadv_tt_global_entry_release); -} - -/** * batadv_tt_global_hash_count() - count the number of orig entries * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client to count entries for * @vid: VLAN identifier * * Return: the number of originators advertising the given address/data - * (excluding ourself). + * (excluding our self). */ int batadv_tt_global_hash_count(struct batadv_priv *bat_priv, const u8 *addr, unsigned short vid) @@ -453,6 +444,9 @@ static void batadv_tt_orig_list_entry_release(struct kref *ref) static void batadv_tt_orig_list_entry_put(struct batadv_tt_orig_list_entry *orig_entry) { + if (!orig_entry) + return; + kref_put(&orig_entry->refcount, batadv_tt_orig_list_entry_release); } @@ -819,14 +813,10 @@ check_roaming: ret = true; out: - if (in_hardif) - batadv_hardif_put(in_hardif); - if (in_dev) - dev_put(in_dev); - if (tt_local) - batadv_tt_local_entry_put(tt_local); - if (tt_global) - batadv_tt_global_entry_put(tt_global); + batadv_hardif_put(in_hardif); + dev_put(in_dev); + batadv_tt_local_entry_put(tt_local); + batadv_tt_global_entry_put(tt_global); return ret; } @@ -842,7 +832,7 @@ out: * table. In case of success the value is updated with the real amount of * reserved bytes * Allocate the needed amount of memory for the entire TT TVLV and write its - * header made up by one tvlv_tt_data object and a series of tvlv_tt_vlan_data + * header made up of one tvlv_tt_data object and a series of tvlv_tt_vlan_data * objects, one per active VLAN served by the originator node. * * Return: the size of the allocated buffer or 0 in case of failure. @@ -862,7 +852,7 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node, u8 *tt_change_ptr; spin_lock_bh(&orig_node->vlan_list_lock); - hlist_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) { + hlist_for_each_entry(vlan, &orig_node->vlan_list, list) { num_vlan++; num_entries += atomic_read(&vlan->tt.num_entries); } @@ -888,9 +878,10 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node, (*tt_data)->num_vlan = htons(num_vlan); tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(*tt_data + 1); - hlist_for_each_entry_rcu(vlan, &orig_node->vlan_list, list) { + hlist_for_each_entry(vlan, &orig_node->vlan_list, list) { tt_vlan->vid = htons(vlan->vid); tt_vlan->crc = htonl(vlan->tt.crc); + tt_vlan->reserved = 0; tt_vlan++; } @@ -937,7 +928,7 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, int change_offset; spin_lock_bh(&bat_priv->softif_vlan_list_lock); - hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) { + hlist_for_each_entry(vlan, &bat_priv->softif_vlan_list, list) { vlan_entries = atomic_read(&vlan->tt.num_entries); if (vlan_entries < 1) continue; @@ -967,13 +958,14 @@ batadv_tt_prepare_tvlv_local_data(struct batadv_priv *bat_priv, (*tt_data)->num_vlan = htons(num_vlan); tt_vlan = (struct batadv_tvlv_tt_vlan_data *)(*tt_data + 1); - hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) { + hlist_for_each_entry(vlan, &bat_priv->softif_vlan_list, list) { vlan_entries = atomic_read(&vlan->tt.num_entries); if (vlan_entries < 1) continue; tt_vlan->vid = htons(vlan->vid); tt_vlan->crc = htonl(vlan->tt.crc); + tt_vlan->reserved = 0; tt_vlan++; } @@ -1062,84 +1054,6 @@ container_register: kfree(tt_data); } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -/** - * batadv_tt_local_seq_print_text() - Print the local tt table in a seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->tt.local_hash; - struct batadv_tt_common_entry *tt_common_entry; - struct batadv_tt_local_entry *tt_local; - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - u32 i; - int last_seen_secs; - int last_seen_msecs; - unsigned long last_seen_jiffies; - bool no_purge; - u16 np_flag = BATADV_TT_CLIENT_NOPURGE; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - goto out; - - seq_printf(seq, - "Locally retrieved addresses (from %s) announced via TT (TTVN: %u):\n", - net_dev->name, (u8)atomic_read(&bat_priv->tt.vn)); - seq_puts(seq, - " Client VID Flags Last seen (CRC )\n"); - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(tt_common_entry, - head, hash_entry) { - tt_local = container_of(tt_common_entry, - struct batadv_tt_local_entry, - common); - last_seen_jiffies = jiffies - tt_local->last_seen; - last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); - last_seen_secs = last_seen_msecs / 1000; - last_seen_msecs = last_seen_msecs % 1000; - - no_purge = tt_common_entry->flags & np_flag; - seq_printf(seq, - " * %pM %4i [%c%c%c%c%c%c] %3u.%03u (%#.8x)\n", - tt_common_entry->addr, - batadv_print_vid(tt_common_entry->vid), - ((tt_common_entry->flags & - BATADV_TT_CLIENT_ROAM) ? 'R' : '.'), - no_purge ? 'P' : '.', - ((tt_common_entry->flags & - BATADV_TT_CLIENT_NEW) ? 'N' : '.'), - ((tt_common_entry->flags & - BATADV_TT_CLIENT_PENDING) ? 'X' : '.'), - ((tt_common_entry->flags & - BATADV_TT_CLIENT_WIFI) ? 'W' : '.'), - ((tt_common_entry->flags & - BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'), - no_purge ? 0 : last_seen_secs, - no_purge ? 0 : last_seen_msecs, - tt_local->vlan->tt.crc); - } - rcu_read_unlock(); - } -out: - if (primary_if) - batadv_hardif_put(primary_if); - return 0; -} -#endif - /** * batadv_tt_local_dump_entry() - Dump one TT local entry into a message * @msg :Netlink message to dump into @@ -1292,10 +1206,8 @@ int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + batadv_hardif_put(primary_if); + dev_put(soft_iface); cb->args[0] = bucket; cb->args[1] = idx; @@ -1382,8 +1294,7 @@ u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr, batadv_tt_local_entry_put(tt_removed_entry); out: - if (tt_local_entry) - batadv_tt_local_entry_put(tt_local_entry); + batadv_tt_local_entry_put(tt_local_entry); return curr_flags; } @@ -1653,8 +1564,7 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global, sync_flags: batadv_tt_global_sync_flags(tt_global); out: - if (orig_entry) - batadv_tt_orig_list_entry_put(orig_entry); + batadv_tt_orig_list_entry_put(orig_entry); spin_unlock_bh(&tt_global->list_lock); } @@ -1674,7 +1584,7 @@ out: * the function argument. * If a TT local entry exists for this non-mesh client remove it. * - * The caller must hold orig_node refcount. + * The caller must hold the orig_node refcount. * * Return: true if the new entry has been added, false otherwise */ @@ -1827,10 +1737,8 @@ out_remove: tt_global_entry->common.flags &= ~BATADV_TT_CLIENT_ROAM; out: - if (tt_global_entry) - batadv_tt_global_entry_put(tt_global_entry); - if (tt_local_entry) - batadv_tt_local_entry_put(tt_local_entry); + batadv_tt_global_entry_put(tt_global_entry); + batadv_tt_local_entry_put(tt_local_entry); return ret; } @@ -1839,7 +1747,7 @@ out: * @bat_priv: the bat priv with all the soft interface information * @tt_global_entry: global translation table entry to be analyzed * - * This functon assumes the caller holds rcu_read_lock(). + * This function assumes the caller holds rcu_read_lock(). * Return: best originator list entry or NULL on errors. */ static struct batadv_tt_orig_list_entry * @@ -1866,152 +1774,17 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv, } /* release the refcount for the "old" best */ - if (best_router) - batadv_neigh_node_put(best_router); + batadv_neigh_node_put(best_router); best_entry = orig_entry; best_router = router; } - if (best_router) - batadv_neigh_node_put(best_router); + batadv_neigh_node_put(best_router); return best_entry; } -#ifdef CONFIG_BATMAN_ADV_DEBUGFS -/** - * batadv_tt_global_print_entry() - print all orig nodes who announce the - * address for this global entry - * @bat_priv: the bat priv with all the soft interface information - * @tt_global_entry: global translation table entry to be printed - * @seq: debugfs table seq_file struct - * - * This functon assumes the caller holds rcu_read_lock(). - */ -static void -batadv_tt_global_print_entry(struct batadv_priv *bat_priv, - struct batadv_tt_global_entry *tt_global_entry, - struct seq_file *seq) -{ - struct batadv_tt_orig_list_entry *orig_entry, *best_entry; - struct batadv_tt_common_entry *tt_common_entry; - struct batadv_orig_node_vlan *vlan; - struct hlist_head *head; - u8 last_ttvn; - u16 flags; - - tt_common_entry = &tt_global_entry->common; - flags = tt_common_entry->flags; - - best_entry = batadv_transtable_best_orig(bat_priv, tt_global_entry); - if (best_entry) { - vlan = batadv_orig_node_vlan_get(best_entry->orig_node, - tt_common_entry->vid); - if (!vlan) { - seq_printf(seq, - " * Cannot retrieve VLAN %d for originator %pM\n", - batadv_print_vid(tt_common_entry->vid), - best_entry->orig_node->orig); - goto print_list; - } - - last_ttvn = atomic_read(&best_entry->orig_node->last_ttvn); - seq_printf(seq, - " %c %pM %4i (%3u) via %pM (%3u) (%#.8x) [%c%c%c%c]\n", - '*', tt_global_entry->common.addr, - batadv_print_vid(tt_global_entry->common.vid), - best_entry->ttvn, best_entry->orig_node->orig, - last_ttvn, vlan->tt.crc, - ((flags & BATADV_TT_CLIENT_ROAM) ? 'R' : '.'), - ((flags & BATADV_TT_CLIENT_WIFI) ? 'W' : '.'), - ((flags & BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'), - ((flags & BATADV_TT_CLIENT_TEMP) ? 'T' : '.')); - - batadv_orig_node_vlan_put(vlan); - } - -print_list: - head = &tt_global_entry->orig_list; - - hlist_for_each_entry_rcu(orig_entry, head, list) { - if (best_entry == orig_entry) - continue; - - vlan = batadv_orig_node_vlan_get(orig_entry->orig_node, - tt_common_entry->vid); - if (!vlan) { - seq_printf(seq, - " + Cannot retrieve VLAN %d for originator %pM\n", - batadv_print_vid(tt_common_entry->vid), - orig_entry->orig_node->orig); - continue; - } - - last_ttvn = atomic_read(&orig_entry->orig_node->last_ttvn); - seq_printf(seq, - " %c %pM %4d (%3u) via %pM (%3u) (%#.8x) [%c%c%c%c]\n", - '+', tt_global_entry->common.addr, - batadv_print_vid(tt_global_entry->common.vid), - orig_entry->ttvn, orig_entry->orig_node->orig, - last_ttvn, vlan->tt.crc, - ((flags & BATADV_TT_CLIENT_ROAM) ? 'R' : '.'), - ((flags & BATADV_TT_CLIENT_WIFI) ? 'W' : '.'), - ((flags & BATADV_TT_CLIENT_ISOLA) ? 'I' : '.'), - ((flags & BATADV_TT_CLIENT_TEMP) ? 'T' : '.')); - - batadv_orig_node_vlan_put(vlan); - } -} - -/** - * batadv_tt_global_seq_print_text() - Print the global tt table in a seq file - * @seq: seq file to print on - * @offset: not used - * - * Return: always 0 - */ -int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->tt.global_hash; - struct batadv_tt_common_entry *tt_common_entry; - struct batadv_tt_global_entry *tt_global; - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - u32 i; - - primary_if = batadv_seq_print_text_primary_if_get(seq); - if (!primary_if) - goto out; - - seq_printf(seq, - "Globally announced TT entries received via the mesh %s\n", - net_dev->name); - seq_puts(seq, - " Client VID (TTVN) Originator (Curr TTVN) (CRC ) Flags\n"); - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(tt_common_entry, - head, hash_entry) { - tt_global = container_of(tt_common_entry, - struct batadv_tt_global_entry, - common); - batadv_tt_global_print_entry(bat_priv, tt_global, seq); - } - rcu_read_unlock(); - } -out: - if (primary_if) - batadv_hardif_put(primary_if); - return 0; -} -#endif - /** * batadv_tt_global_dump_subentry() - Dump all TT local entries into a message * @msg: Netlink message to dump into @@ -2213,10 +1986,8 @@ int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb) ret = msg->len; out: - if (primary_if) - batadv_hardif_put(primary_if); - if (soft_iface) - dev_put(soft_iface); + batadv_hardif_put(primary_if); + dev_put(soft_iface); cb->args[0] = bucket; cb->args[1] = idx; @@ -2406,10 +2177,8 @@ static void batadv_tt_global_del(struct batadv_priv *bat_priv, } out: - if (tt_global_entry) - batadv_tt_global_entry_put(tt_global_entry); - if (local_entry) - batadv_tt_local_entry_put(local_entry); + batadv_tt_global_entry_put(tt_global_entry); + batadv_tt_local_entry_put(local_entry); } /** @@ -2636,10 +2405,8 @@ struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv, rcu_read_unlock(); out: - if (tt_global_entry) - batadv_tt_global_entry_put(tt_global_entry); - if (tt_local_entry) - batadv_tt_local_entry_put(tt_local_entry); + batadv_tt_global_entry_put(tt_global_entry); + batadv_tt_local_entry_put(tt_local_entry); return orig_node; } @@ -2816,6 +2583,9 @@ static void batadv_tt_req_node_release(struct kref *ref) */ static void batadv_tt_req_node_put(struct batadv_tt_req_node *tt_req_node) { + if (!tt_req_node) + return; + kref_put(&tt_req_node->refcount, batadv_tt_req_node_release); } @@ -2996,7 +2766,7 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv, u32 i; tt_tot = batadv_tt_entries(tt_len); - tt_change = (struct batadv_tvlv_tt_change *)tvlv_buff; + tt_change = tvlv_buff; if (!valid_cb) return; @@ -3197,8 +2967,7 @@ static bool batadv_send_tt_request(struct batadv_priv *bat_priv, ret = true; out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); if (ret && tt_req_node) { spin_lock_bh(&bat_priv->tt.req_list_lock); @@ -3209,8 +2978,7 @@ out: spin_unlock_bh(&bat_priv->tt.req_list_lock); } - if (tt_req_node) - batadv_tt_req_node_put(tt_req_node); + batadv_tt_req_node_put(tt_req_node); kfree(tvlv_tt_data); return ret; @@ -3341,10 +3109,8 @@ unlock: spin_unlock_bh(&req_dst_orig_node->tt_buff_lock); out: - if (res_dst_orig_node) - batadv_orig_node_put(res_dst_orig_node); - if (req_dst_orig_node) - batadv_orig_node_put(req_dst_orig_node); + batadv_orig_node_put(res_dst_orig_node); + batadv_orig_node_put(req_dst_orig_node); kfree(tvlv_tt_data); return ret; } @@ -3458,10 +3224,8 @@ unlock: spin_unlock_bh(&bat_priv->tt.last_changeset_lock); out: spin_unlock_bh(&bat_priv->tt.commit_lock); - if (orig_node) - batadv_orig_node_put(orig_node); - if (primary_if) - batadv_hardif_put(primary_if); + batadv_orig_node_put(orig_node); + batadv_hardif_put(primary_if); kfree(tvlv_tt_data); /* The packet was for this host, so it doesn't need to be re-routed */ return true; @@ -3546,8 +3310,7 @@ static void batadv_tt_fill_gtable(struct batadv_priv *bat_priv, atomic_set(&orig_node->last_ttvn, ttvn); out: - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); } static void batadv_tt_update_changes(struct batadv_priv *bat_priv, @@ -3588,8 +3351,7 @@ bool batadv_is_my_client(struct batadv_priv *bat_priv, const u8 *addr, goto out; ret = true; out: - if (tt_local_entry) - batadv_tt_local_entry_put(tt_local_entry); + batadv_tt_local_entry_put(tt_local_entry); return ret; } @@ -3652,8 +3414,7 @@ static void batadv_handle_tt_response(struct batadv_priv *bat_priv, spin_unlock_bh(&bat_priv->tt.req_list_lock); out: - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); } static void batadv_tt_roam_list_free(struct batadv_priv *bat_priv) @@ -3784,8 +3545,7 @@ static void batadv_send_roam_adv(struct batadv_priv *bat_priv, u8 *client, &tvlv_roam, sizeof(tvlv_roam)); out: - if (primary_if) - batadv_hardif_put(primary_if); + batadv_hardif_put(primary_if); } static void batadv_tt_purge(struct work_struct *work) @@ -4234,7 +3994,7 @@ static void batadv_tt_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, if (tvlv_value_len < sizeof(*tt_data)) return; - tt_data = (struct batadv_tvlv_tt_data *)tvlv_value; + tt_data = tvlv_value; tvlv_value_len -= sizeof(*tt_data); num_vlan = ntohs(tt_data->num_vlan); @@ -4277,7 +4037,7 @@ static int batadv_tt_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv, if (tvlv_value_len < sizeof(*tt_data)) return NET_RX_SUCCESS; - tt_data = (struct batadv_tvlv_tt_data *)tvlv_value; + tt_data = tvlv_value; tvlv_value_len -= sizeof(*tt_data); tt_vlan_len = sizeof(struct batadv_tvlv_tt_vlan_data); @@ -4369,7 +4129,7 @@ static int batadv_roam_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv, goto out; batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_RX); - roaming_adv = (struct batadv_tvlv_roam_adv *)tvlv_value; + roaming_adv = tvlv_value; batadv_dbg(BATADV_DBG_TT, bat_priv, "Received ROAMING_ADV from %pM (client %pM)\n", @@ -4380,8 +4140,7 @@ static int batadv_roam_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv, atomic_read(&orig_node->last_ttvn) + 1); out: - if (orig_node) - batadv_orig_node_put(orig_node); + batadv_orig_node_put(orig_node); return NET_RX_SUCCESS; } @@ -4403,8 +4162,10 @@ int batadv_tt_init(struct batadv_priv *bat_priv) return ret; ret = batadv_tt_global_init(bat_priv); - if (ret < 0) + if (ret < 0) { + batadv_tt_local_table_free(bat_priv); return ret; + } batadv_tvlv_handler_register(bat_priv, batadv_tt_tvlv_ogm_handler_v1, batadv_tt_tvlv_unicast_handler_v1, diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h index b24d35b9226a..d18740d9a22b 100644 --- a/net/batman-adv/translation-table.h +++ b/net/batman-adv/translation-table.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich, Antonio Quartulli */ @@ -9,9 +9,9 @@ #include "main.h" +#include <linux/kref.h> #include <linux/netdevice.h> #include <linux/netlink.h> -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/types.h> @@ -21,8 +21,6 @@ bool batadv_tt_local_add(struct net_device *soft_iface, const u8 *addr, u16 batadv_tt_local_remove(struct batadv_priv *bat_priv, const u8 *addr, unsigned short vid, const char *message, bool roaming); -int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset); -int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset); int batadv_tt_local_dump(struct sk_buff *msg, struct netlink_callback *cb); int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb); void batadv_tt_global_del_orig(struct batadv_priv *bat_priv, @@ -31,7 +29,7 @@ void batadv_tt_global_del_orig(struct batadv_priv *bat_priv, struct batadv_tt_global_entry * batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr, unsigned short vid); -void batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry); +void batadv_tt_global_entry_release(struct kref *ref); int batadv_tt_global_hash_count(struct batadv_priv *bat_priv, const u8 *addr, unsigned short vid); struct batadv_orig_node *batadv_transtable_search(struct batadv_priv *bat_priv, @@ -58,4 +56,19 @@ bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv, int batadv_tt_cache_init(void); void batadv_tt_cache_destroy(void); +/** + * batadv_tt_global_entry_put() - decrement the tt_global_entry refcounter and + * possibly release it + * @tt_global_entry: tt_global_entry to be free'd + */ +static inline void +batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry) +{ + if (!tt_global_entry) + return; + + kref_put(&tt_global_entry->common.refcount, + batadv_tt_global_entry_release); +} + #endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */ diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c index 0963a43ad996..7ec2e2343884 100644 --- a/net/batman-adv/tvlv.c +++ b/net/batman-adv/tvlv.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -7,10 +7,10 @@ #include "main.h" #include <linux/byteorder/generic.h> +#include <linux/container_of.h> #include <linux/etherdevice.h> #include <linux/gfp.h> #include <linux/if_ether.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> @@ -50,6 +50,9 @@ static void batadv_tvlv_handler_release(struct kref *ref) */ static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler) { + if (!tvlv_handler) + return; + kref_put(&tvlv_handler->refcount, batadv_tvlv_handler_release); } @@ -106,6 +109,9 @@ static void batadv_tvlv_container_release(struct kref *ref) */ static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv) { + if (!tvlv) + return; + kref_put(&tvlv->refcount, batadv_tvlv_container_release); } @@ -353,8 +359,8 @@ end: * @tvlv_value: tvlv content * @tvlv_value_len: tvlv content length * - * Return: success if handler was not found or the return value of the handler - * callback. + * Return: success if the handler was not found or the return value of the + * handler callback. */ static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv, struct batadv_tvlv_handler *tvlv_handler, @@ -438,8 +444,7 @@ int batadv_tvlv_containers_process(struct batadv_priv *bat_priv, ogm_source, orig_node, src, dst, tvlv_value, tvlv_value_cont_len); - if (tvlv_handler) - batadv_tvlv_handler_put(tvlv_handler); + batadv_tvlv_handler_put(tvlv_handler); tvlv_value = (u8 *)tvlv_value + tvlv_value_cont_len; tvlv_value_len -= tvlv_value_cont_len; } @@ -582,8 +587,8 @@ void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv, * @tvlv_value: tvlv content * @tvlv_value_len: tvlv content length */ -void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src, - u8 *dst, u8 type, u8 version, +void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, const u8 *src, + const u8 *dst, u8 type, u8 version, void *tvlv_value, u16 tvlv_value_len) { struct batadv_unicast_tvlv_packet *unicast_tvlv_packet; diff --git a/net/batman-adv/tvlv.h b/net/batman-adv/tvlv.h index d509d00c7a23..4cf8af00fc11 100644 --- a/net/batman-adv/tvlv.h +++ b/net/batman-adv/tvlv.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -42,8 +42,8 @@ int batadv_tvlv_containers_process(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, u8 *src, u8 *dst, void *tvlv_buff, u16 tvlv_buff_len); -void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src, - u8 *dst, u8 type, u8 version, +void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, const u8 *src, + const u8 *dst, u8 type, u8 version, void *tvlv_value, u16 tvlv_value_len); #endif /* _NET_BATMAN_ADV_TVLV_H_ */ diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 4a17a66cc572..758cd797a063 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors: +/* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ @@ -21,7 +21,6 @@ #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/sched.h> /* for linux/wait.h */ -#include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/spinlock.h> #include <linux/timer.h> @@ -187,9 +186,6 @@ struct batadv_hard_iface { /** @net_dev: pointer to the net_device */ struct net_device *net_dev; - /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */ - struct kobject *hardif_obj; - /** @refcount: number of contexts the object is used */ struct kref refcount; @@ -208,6 +204,12 @@ struct batadv_hard_iface { /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; + /** + * @hop_penalty: penalty which will be applied to the tq-field + * of an OGM received via this interface + */ + atomic_t hop_penalty; + /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */ struct batadv_hard_iface_bat_iv bat_iv; @@ -216,13 +218,6 @@ struct batadv_hard_iface { struct batadv_hard_iface_bat_v bat_v; #endif -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - /** - * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs - */ - struct dentry *debug_dir; -#endif - /** * @neigh_list: list of unique single hop neighbors via this interface */ @@ -233,7 +228,8 @@ struct batadv_hard_iface { }; /** - * struct batadv_orig_ifinfo - B.A.T.M.A.N. IV private orig_ifinfo members + * struct batadv_orig_ifinfo_bat_iv - B.A.T.M.A.N. IV private orig_ifinfo + * members */ struct batadv_orig_ifinfo_bat_iv { /** @@ -455,8 +451,8 @@ struct batadv_orig_node { spinlock_t tt_buff_lock; /** - * @tt_lock: prevents from updating the table while reading it. Table - * update is made up by two operations (data structure update and + * @tt_lock: avoids concurrent read from and write to the table. Table + * update is made up of two operations (data structure update and * metadata -CRC/TTVN-recalculation) and they have to be executed * atomically in order to avoid another thread to read the * table/metadata between those. @@ -748,7 +744,7 @@ struct batadv_neigh_ifinfo { * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression */ struct batadv_bcast_duplist_entry { - /** @orig: mac address of orig node orginating the broadcast */ + /** @orig: mac address of orig node originating the broadcast */ u8 orig[ETH_ALEN]; /** @crc: crc32 checksum of broadcast payload */ @@ -1010,7 +1006,7 @@ struct batadv_priv_tt { /** * @commit_lock: prevents from executing a local TT commit while reading - * the local table. The local TT commit is made up by two operations + * the local table. The local TT commit is made up of two operations * (data structure update and metadata -CRC/TTVN- recalculation) and * they have to be executed atomically in order to avoid another thread * to read the table/metadata between those. @@ -1024,7 +1020,7 @@ struct batadv_priv_tt { #ifdef CONFIG_BATMAN_ADV_BLA /** - * struct batadv_priv_bla - per mesh interface bridge loope avoidance data + * struct batadv_priv_bla - per mesh interface bridge loop avoidance data */ struct batadv_priv_bla { /** @num_requests: number of bla requests in flight */ @@ -1086,7 +1082,7 @@ struct batadv_priv_bla { * struct batadv_priv_debug_log - debug logging data */ struct batadv_priv_debug_log { - /** @log_buff: buffer holding the logs (ring bufer) */ + /** @log_buff: buffer holding the logs (ring buffer) */ char log_buff[BATADV_LOG_BUF_LEN]; /** @log_start: index of next character to read */ @@ -1300,13 +1296,6 @@ struct batadv_priv_nc { /** @work: work queue callback item for cleanup */ struct delayed_work work; -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - /** - * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs - */ - struct dentry *debug_dir; -#endif - /** * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq */ @@ -1486,7 +1475,7 @@ struct batadv_tp_vars { /** @unacked_lock: protect unacked_list */ spinlock_t unacked_lock; - /** @last_recv_time: time time (jiffies) a msg was received */ + /** @last_recv_time: time (jiffies) a msg was received */ unsigned long last_recv_time; /** @refcount: number of context where the object is used */ @@ -1506,9 +1495,6 @@ struct batadv_softif_vlan { /** @vid: VLAN identifier */ unsigned short vid; - /** @kobj: kobject for sysfs vlan subdirectory */ - struct kobject *kobj; - /** @ap_isolation: AP isolation state */ atomic_t ap_isolation; /* boolean */ @@ -1661,14 +1647,6 @@ struct batadv_priv { /** @batman_queue_left: number of remaining OGM packet slots */ atomic_t batman_queue_left; - /** @mesh_obj: kobject for sysfs mesh subdirectory */ - struct kobject *mesh_obj; - -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - /** @debug_dir: dentry for debugfs batman-adv subdirectory */ - struct dentry *debug_dir; -#endif - /** @forw_bat_list: list of aggregated OGMs that will be forwarded */ struct hlist_head forw_bat_list; @@ -1681,19 +1659,19 @@ struct batadv_priv { /** @tp_list: list of tp sessions */ struct hlist_head tp_list; - /** @tp_num: number of currently active tp sessions */ + /** @orig_hash: hash table containing mesh participants (orig nodes) */ struct batadv_hashtable *orig_hash; - /** @orig_hash: hash table containing mesh participants (orig nodes) */ + /** @forw_bat_list_lock: lock protecting forw_bat_list */ spinlock_t forw_bat_list_lock; - /** @forw_bat_list_lock: lock protecting forw_bat_list */ + /** @forw_bcast_list_lock: lock protecting forw_bcast_list */ spinlock_t forw_bcast_list_lock; - /** @forw_bcast_list_lock: lock protecting forw_bcast_list */ + /** @tp_list_lock: spinlock protecting @tp_list */ spinlock_t tp_list_lock; - /** @tp_list_lock: spinlock protecting @tp_list */ + /** @tp_num: number of currently active tp sessions */ atomic_t tp_num; /** @orig_work: work queue callback item for orig node purging */ @@ -1718,7 +1696,7 @@ struct batadv_priv { spinlock_t softif_vlan_list_lock; #ifdef CONFIG_BATMAN_ADV_BLA - /** @bla: bridge loope avoidance data */ + /** @bla: bridge loop avoidance data */ struct batadv_priv_bla bla; #endif @@ -1762,45 +1740,6 @@ struct batadv_priv { #endif }; -/** - * struct batadv_socket_client - layer2 icmp socket client data - */ -struct batadv_socket_client { - /** - * @queue_list: packet queue for packets destined for this socket client - */ - struct list_head queue_list; - - /** @queue_len: number of packets in the packet queue (queue_list) */ - unsigned int queue_len; - - /** @index: socket client's index in the batadv_socket_client_hash */ - unsigned char index; - - /** @lock: lock protecting queue_list, queue_len & index */ - spinlock_t lock; - - /** @queue_wait: socket client's wait queue */ - wait_queue_head_t queue_wait; - - /** @bat_priv: pointer to soft_iface this client belongs to */ - struct batadv_priv *bat_priv; -}; - -/** - * struct batadv_socket_packet - layer2 icmp packet for socket client - */ -struct batadv_socket_packet { - /** @list: list node for &batadv_socket_client.queue_list */ - struct list_head list; - - /** @icmp_len: size of the layer2 icmp packet */ - size_t icmp_len; - - /** @icmp_packet: layer2 icmp packet */ - u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE]; -}; - #ifdef CONFIG_BATMAN_ADV_BLA /** @@ -1990,7 +1929,7 @@ struct batadv_tt_change_node { */ struct batadv_tt_req_node { /** - * @addr: mac address address of the originator this request was sent to + * @addr: mac address of the originator this request was sent to */ u8 addr[ETH_ALEN]; @@ -2228,11 +2167,6 @@ struct batadv_algo_neigh_ops { struct batadv_neigh_node *neigh2, struct batadv_hard_iface *if_outgoing2); -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - /** @print: print the single hop neighbor list (optional) */ - void (*print)(struct batadv_priv *priv, struct seq_file *seq); -#endif - /** @dump: dump neighbors to a netlink socket (optional) */ void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *priv, @@ -2243,12 +2177,6 @@ struct batadv_algo_neigh_ops { * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific) */ struct batadv_algo_orig_ops { -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - /** @print: print the originator table (optional) */ - void (*print)(struct batadv_priv *priv, struct seq_file *seq, - struct batadv_hard_iface *hard_iface); -#endif - /** @dump: dump originators to a netlink socket (optional) */ void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *priv, @@ -2268,10 +2196,6 @@ struct batadv_algo_gw_ops { */ ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff, size_t count); - - /** @show_sel_class: prints the current GW selection class (optional) */ - ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff); - /** * @get_best_gw_node: select the best GW from the list of available * nodes (optional) @@ -2287,11 +2211,6 @@ struct batadv_algo_gw_ops { struct batadv_orig_node *curr_gw_orig, struct batadv_orig_node *orig_node); -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - /** @print: print the gateway table (optional) */ - void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq); -#endif - /** @dump: dump gateways to a netlink socket (optional) */ void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *priv); @@ -2450,21 +2369,4 @@ enum batadv_tvlv_handler_flags { BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2), }; -/** - * struct batadv_store_mesh_work - Work queue item to detach add/del interface - * from sysfs locks - */ -struct batadv_store_mesh_work { - /** - * @net_dev: netdevice to add/remove to/from batman-adv soft-interface - */ - struct net_device *net_dev; - - /** @soft_iface_name: name of soft-interface to modify */ - char soft_iface_name[IFNAMSIZ]; - - /** @work: work queue item */ - struct work_struct work; -}; - #endif /* _NET_BATMAN_ADV_TYPES_H_ */ |