diff options
Diffstat (limited to 'drivers/staging/batman-adv')
40 files changed, 0 insertions, 9116 deletions
diff --git a/drivers/staging/batman-adv/Kconfig b/drivers/staging/batman-adv/Kconfig deleted file mode 100644 index 8553f3517454..000000000000 --- a/drivers/staging/batman-adv/Kconfig +++ /dev/null @@ -1,26 +0,0 @@ -# -# B.A.T.M.A.N meshing protocol -# - -config BATMAN_ADV - tristate "B.A.T.M.A.N. Advanced Meshing Protocol" - depends on NET - default n - ---help--- - - B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is - a routing protocol for multi-hop ad-hoc mesh networks. The - networks may be wired or wireless. See - http://www.open-mesh.org/ for more information and user space - tools. - -config BATMAN_ADV_DEBUG - bool "B.A.T.M.A.N. debugging" - depends on BATMAN_ADV != n - ---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 kernel log. The - output is controlled via the module parameter debug. - diff --git a/drivers/staging/batman-adv/Makefile b/drivers/staging/batman-adv/Makefile deleted file mode 100644 index 78924283ea74..000000000000 --- a/drivers/staging/batman-adv/Makefile +++ /dev/null @@ -1,22 +0,0 @@ -# -# Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: -# -# Marek Lindner, Simon Wunderlich -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of version 2 of the GNU General Public -# License as published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -# 02110-1301, USA -# - -obj-$(CONFIG_BATMAN_ADV) += batman-adv.o -batman-adv-y := main.o bat_debugfs.o bat_sysfs.o send.o routing.o soft-interface.o icmp_socket.o translation-table.o bitarray.o hash.o ring_buffer.o vis.o hard-interface.o aggregation.o originator.o unicast.o diff --git a/drivers/staging/batman-adv/README b/drivers/staging/batman-adv/README deleted file mode 100644 index 7c878bb07f3a..000000000000 --- a/drivers/staging/batman-adv/README +++ /dev/null @@ -1,240 +0,0 @@ -[state: 04-09-2010] - -BATMAN-ADV ----------- - -Batman advanced is a new approach to wireless networking which -does no longer operate on the IP basis. Unlike the batman daemon, -which exchanges information using UDP packets and sets routing -tables, batman-advanced operates on ISO/OSI Layer 2 only and uses -and routes (or better: bridges) Ethernet Frames. It emulates a -virtual network switch of all nodes participating. Therefore all -nodes appear to be link local, thus all higher operating proto- -cols won't be affected by any changes within the network. You can -run almost any protocol above batman advanced, prominent examples -are: IPv4, IPv6, DHCP, IPX. - -Batman advanced was implemented as a Linux kernel driver to re- -duce the overhead to a minimum. It does not depend on any (other) -network driver, and can be used on wifi as well as ethernet lan, -vpn, etc ... (anything with ethernet-style layer 2). - -CONFIGURATION -------------- - -Load the batman-adv module into your kernel: - -# insmod batman-adv.ko - -The module is now waiting for activation. You must add some in- -terfaces on which batman can operate. After loading the module -batman advanced will scan your systems interfaces to search for -compatible interfaces. Once found, it will create subfolders in -the /sys directories of each supported interface, e.g. - -# ls /sys/class/net/eth0/batman_adv/ -# iface_status mesh_iface - -If an interface does not have the "batman_adv" subfolder it prob- -ably is not supported. Not supported interfaces are: loopback, -non-ethernet and batman's own interfaces. - -Note: After the module was loaded it will continuously watch for -new interfaces to verify the compatibility. There is no need to -reload the module if you plug your USB wifi adapter into your ma- -chine after batman advanced was initially loaded. - -To activate a given interface simply write "bat0" into its -"mesh_iface" file inside the batman_adv subfolder: - -# echo bat0 > /sys/class/net/eth0/batman_adv/mesh_iface - -Repeat this step for all interfaces you wish to add. Now batman -starts using/broadcasting on this/these interface(s). - -By reading the "iface_status" file you can check its status: - -# cat /sys/class/net/eth0/batman_adv/iface_status -# active - -To deactivate an interface you have to write "none" into its -"mesh_iface" file: - -# echo none > /sys/class/net/eth0/batman_adv/mesh_iface - - -All mesh wide settings can be found in batman's own interface -folder: - -# ls /sys/class/net/bat0/mesh/ -# aggregated_ogms bonding orig_interval vis_mode - - -There is a special folder for debugging informations: - -# ls /sys/kernel/debug/batman_adv/bat0/ -# originators socket transtable_global transtable_local -# vis_data - - -Some of the files contain all sort of status information regard- -ing the mesh network. For example, you can view the table of -originators (mesh participants) with: - -# cat /sys/kernel/debug/batman_adv/bat0/originators - -Other files allow to change batman's behaviour to better fit your -requirements. For instance, you can check the current originator -interval (value in milliseconds which determines how often batman -sends its broadcast packets): - -# cat /sys/class/net/bat0/mesh/orig_interval -# 1000 - -and also change its value: - -# echo 3000 > /sys/class/net/bat0/mesh/orig_interval - -In very mobile scenarios, you might want to adjust the originator -interval to a lower value. This will make the mesh more respon- -sive to topology changes, but will also increase the overhead. - - -USAGE ------ - -To make use of your newly created mesh, batman advanced provides -a new interface "bat0" which you should use from this point on. -All interfaces added to batman advanced are not relevant any -longer because batman handles them for you. Basically, one "hands -over" the data by using the batman interface and batman will make -sure it reaches its destination. - -The "bat0" interface can be used like any other regular inter- -face. It needs an IP address which can be either statically con- -figured or dynamically (by using DHCP or similar services): - -# NodeA: ifconfig bat0 192.168.0.1 -# NodeB: ifconfig bat0 192.168.0.2 -# NodeB: ping 192.168.0.1 - -Note: In order to avoid problems remove all IP addresses previ- -ously assigned to interfaces now used by batman advanced, e.g. - -# ifconfig eth0 0.0.0.0 - - -VISUALIZATION -------------- - -If you want topology visualization, at least one mesh node must -be configured as VIS-server: - -# echo "server" > /sys/class/net/bat0/mesh/vis_mode - -Each node is either configured as "server" or as "client" (de- -fault: "client"). Clients send their topology data to the server -next to them, and server synchronize with other servers. If there -is no server configured (default) within the mesh, no topology -information will be transmitted. With these "synchronizing -servers", there can be 1 or more vis servers sharing the same (or -at least very similar) data. - -When configured as server, you can get a topology snapshot of -your mesh: - -# cat /sys/kernel/debug/batman_adv/bat0/vis_data - -This raw output is intended to be easily parsable and convertable -with other tools. Have a look at the batctl README if you want a -vis output in dot or json format for instance and how those out- -puts could then be visualised in an image. - -The raw format consists of comma separated values per entry where -each entry is giving information about a certain source inter- -face. Each entry can/has to have the following values: --> "mac" - mac address of an originator's source interface - (each line begins with it) --> "TQ mac value" - src mac's link quality towards mac address - of a neighbor originator's interface which - is being used for routing --> "HNA mac" - HNA announced by source mac --> "PRIMARY" - this is a primary interface --> "SEC mac" - secondary mac address of source - (requires preceding PRIMARY) - -The TQ value has a range from 4 to 255 with 255 being the best. -The HNA entries are showing which hosts are connected to the mesh -via bat0 or being bridged into the mesh network. The PRIMARY/SEC -values are only applied on primary interfaces - - -LOGGING/DEBUGGING ------------------ - -All error messages, warnings and information messages are sent to -the kernel log. Depending on your operating system distribution -this can be read in one of a number of ways. Try using the com- -mands: dmesg, logread, or looking in the files /var/log/kern.log -or /var/log/syslog. All batman-adv messages are prefixed with -"batman-adv:" So to see just these messages try - -# dmesg | grep batman-adv - -When investigating problems with your mesh network it is some- -times necessary to see more detail debug messages. This must be -enabled when compiling the batman-adv module. When building bat- -man-adv as part of kernel, use "make menuconfig" and enable the -option "B.A.T.M.A.N. debugging". - -Those additional debug messages can be accessed using a special -file in debugfs - -# cat /sys/kernel/debug/batman_adv/bat0/log - -The additional debug output is by default disabled. It can be en- -abled during run time. Following log_levels are defined: - -0 - All debug output disabled -1 - Enable messages related to routing / flooding / broadcasting -2 - Enable route or hna added / changed / deleted -3 - Enable all messages - -The debug output can be changed at runtime using the file -/sys/class/net/bat0/mesh/log_level. e.g. - -# echo 2 > /sys/class/net/bat0/mesh/log_level - -will enable debug messages for when routes or HNAs change. - - -BATCTL ------- - -As batman advanced operates on layer 2 all hosts participating in -the virtual switch are completely transparent for all protocols -above layer 2. Therefore the common diagnosis tools do not work -as expected. To overcome these problems batctl was created. At -the moment the batctl contains ping, traceroute, tcpdump and -interfaces to the kernel module settings. - -For more information, please see the manpage (man batctl). - -batctl is available on http://www.open-mesh.org/ - - -CONTACT -------- - -Please send us comments, experiences, questions, anything :) - -IRC: #batman on irc.freenode.org -Mailing-list: b.a.t.m.a.n@b.a.t.m.a.n@lists.open-mesh.org - (optional subscription at - https://lists.open-mesh.org/mm/listinfo/b.a.t.m.a.n) - -You can also contact the Authors: - -Marek Lindner <lindner_marek@yahoo.de> -Simon Wunderlich <siwu@hrz.tu-chemnitz.de> - diff --git a/drivers/staging/batman-adv/TODO b/drivers/staging/batman-adv/TODO deleted file mode 100644 index 11c384f8b063..000000000000 --- a/drivers/staging/batman-adv/TODO +++ /dev/null @@ -1,14 +0,0 @@ - * remove own list functionality from hash - * use hlist_head, hlist_node in hash - * don't use callbacks for compare+choose in hash - * think about more efficient ways instead of abstraction of hash - * Request a new review - * Process the comments from the review - * Move into mainline proper - -Please send all patches to: - Marek Lindner <lindner_marek@yahoo.de> - Simon Wunderlich <siwu@hrz.tu-chemnitz.de> - Andrew Lunn <andrew@lunn.ch> - b.a.t.m.a.n@lists.open-mesh.org - Greg Kroah-Hartman <gregkh@suse.de> diff --git a/drivers/staging/batman-adv/aggregation.c b/drivers/staging/batman-adv/aggregation.c deleted file mode 100644 index 08624d44e231..000000000000 --- a/drivers/staging/batman-adv/aggregation.c +++ /dev/null @@ -1,275 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "aggregation.h" -#include "send.h" -#include "routing.h" - -/* calculate the size of the hna information for a given packet */ -static int hna_len(struct batman_packet *batman_packet) -{ - return batman_packet->num_hna * ETH_ALEN; -} - -/* return true if new_packet can be aggregated with forw_packet */ -static bool can_aggregate_with(struct batman_packet *new_batman_packet, - int packet_len, - unsigned long send_time, - bool directlink, - struct batman_if *if_incoming, - struct forw_packet *forw_packet) -{ - struct batman_packet *batman_packet = - (struct batman_packet *)forw_packet->skb->data; - int aggregated_bytes = forw_packet->packet_len + packet_len; - - /** - * we can aggregate the current packet to this aggregated packet - * if: - * - * - the send time is within our MAX_AGGREGATION_MS time - * - the resulting packet wont be bigger than - * MAX_AGGREGATION_BYTES - */ - - if (time_before(send_time, forw_packet->send_time) && - time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS), - forw_packet->send_time) && - (aggregated_bytes <= MAX_AGGREGATION_BYTES)) { - - /** - * check aggregation compatibility - * -> direct link packets are broadcasted on - * their interface only - * -> aggregate packet if the current packet is - * a "global" packet as well as the base - * packet - */ - - /* packets without direct link flag and high TTL - * are flooded through the net */ - if ((!directlink) && - (!(batman_packet->flags & DIRECTLINK)) && - (batman_packet->ttl != 1) && - - /* own packets originating non-primary - * interfaces leave only that interface */ - ((!forw_packet->own) || - (forw_packet->if_incoming->if_num == 0))) - return true; - - /* if the incoming packet is sent via this one - * interface only - we still can aggregate */ - if ((directlink) && - (new_batman_packet->ttl == 1) && - (forw_packet->if_incoming == if_incoming) && - - /* packets from direct neighbors or - * own secondary interface packets - * (= secondary interface packets in general) */ - (batman_packet->flags & DIRECTLINK || - (forw_packet->own && - forw_packet->if_incoming->if_num != 0))) - return true; - } - - return false; -} - -#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) -/* create a new aggregated packet and add this packet to it */ -static void new_aggregated_packet(unsigned char *packet_buff, int packet_len, - unsigned long send_time, bool direct_link, - struct batman_if *if_incoming, - int own_packet) -{ - struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct forw_packet *forw_packet_aggr; - unsigned long flags; - unsigned char *skb_buff; - - /* own packet should always be scheduled */ - if (!own_packet) { - if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) { - bat_dbg(DBG_BATMAN, bat_priv, - "batman packet queue full\n"); - return; - } - } - - forw_packet_aggr = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC); - if (!forw_packet_aggr) { - if (!own_packet) - atomic_inc(&bat_priv->batman_queue_left); - return; - } - - if ((atomic_read(&bat_priv->aggregation_enabled)) && - (packet_len < MAX_AGGREGATION_BYTES)) - forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES + - sizeof(struct ethhdr)); - else - forw_packet_aggr->skb = dev_alloc_skb(packet_len + - sizeof(struct ethhdr)); - - if (!forw_packet_aggr->skb) { - if (!own_packet) - atomic_inc(&bat_priv->batman_queue_left); - kfree(forw_packet_aggr); - return; - } - skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr)); - - INIT_HLIST_NODE(&forw_packet_aggr->list); - - skb_buff = skb_put(forw_packet_aggr->skb, packet_len); - forw_packet_aggr->packet_len = packet_len; - memcpy(skb_buff, packet_buff, packet_len); - - forw_packet_aggr->own = own_packet; - forw_packet_aggr->if_incoming = if_incoming; - forw_packet_aggr->num_packets = 0; - forw_packet_aggr->direct_link_flags = 0; - forw_packet_aggr->send_time = send_time; - - /* save packet direct link flag status */ - if (direct_link) - forw_packet_aggr->direct_link_flags |= 1; - - /* add new packet to packet list */ - spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags); - hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list); - spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags); - - /* start timer for this packet */ - INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work, - send_outstanding_bat_packet); - queue_delayed_work(bat_event_workqueue, - &forw_packet_aggr->delayed_work, - send_time - jiffies); -} - -/* aggregate a new packet into the existing aggregation */ -static void aggregate(struct forw_packet *forw_packet_aggr, - unsigned char *packet_buff, - int packet_len, - bool direct_link) -{ - unsigned char *skb_buff; - - skb_buff = skb_put(forw_packet_aggr->skb, packet_len); - memcpy(skb_buff, packet_buff, packet_len); - forw_packet_aggr->packet_len += packet_len; - forw_packet_aggr->num_packets++; - - /* save packet direct link flag status */ - if (direct_link) - forw_packet_aggr->direct_link_flags |= - (1 << forw_packet_aggr->num_packets); -} - -void add_bat_packet_to_list(struct bat_priv *bat_priv, - unsigned char *packet_buff, int packet_len, - struct batman_if *if_incoming, char own_packet, - unsigned long send_time) -{ - /** - * _aggr -> pointer to the packet we want to aggregate with - * _pos -> pointer to the position in the queue - */ - struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL; - struct hlist_node *tmp_node; - struct batman_packet *batman_packet = - (struct batman_packet *)packet_buff; - bool direct_link = batman_packet->flags & DIRECTLINK ? 1 : 0; - unsigned long flags; - - /* find position for the packet in the forward queue */ - spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags); - /* own packets are not to be aggregated */ - if ((atomic_read(&bat_priv->aggregation_enabled)) && (!own_packet)) { - hlist_for_each_entry(forw_packet_pos, tmp_node, - &bat_priv->forw_bat_list, list) { - if (can_aggregate_with(batman_packet, - packet_len, - send_time, - direct_link, - if_incoming, - forw_packet_pos)) { - forw_packet_aggr = forw_packet_pos; - break; - } - } - } - - /* nothing to aggregate with - either aggregation disabled or no - * suitable aggregation packet found */ - if (forw_packet_aggr == NULL) { - /* the following section can run without the lock */ - spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags); - - /** - * if we could not aggregate this packet with one of the others - * we hold it back for a while, so that it might be aggregated - * later on - */ - if ((!own_packet) && - (atomic_read(&bat_priv->aggregation_enabled))) - send_time += msecs_to_jiffies(MAX_AGGREGATION_MS); - - new_aggregated_packet(packet_buff, packet_len, - send_time, direct_link, - if_incoming, own_packet); - } else { - aggregate(forw_packet_aggr, - packet_buff, packet_len, - direct_link); - spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags); - } -} - -/* unpack the aggregated packets and process them one by one */ -void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff, - int packet_len, struct batman_if *if_incoming) -{ - struct batman_packet *batman_packet; - int buff_pos = 0; - unsigned char *hna_buff; - - batman_packet = (struct batman_packet *)packet_buff; - - do { - /* network to host order for our 32bit seqno, and the - orig_interval. */ - batman_packet->seqno = ntohl(batman_packet->seqno); - - hna_buff = packet_buff + buff_pos + BAT_PACKET_LEN; - receive_bat_packet(ethhdr, batman_packet, - hna_buff, hna_len(batman_packet), - if_incoming); - - buff_pos += BAT_PACKET_LEN + hna_len(batman_packet); - batman_packet = (struct batman_packet *) - (packet_buff + buff_pos); - } while (aggregated_packet(buff_pos, packet_len, - batman_packet->num_hna)); -} diff --git a/drivers/staging/batman-adv/aggregation.h b/drivers/staging/batman-adv/aggregation.h deleted file mode 100644 index 71a91b3da913..000000000000 --- a/drivers/staging/batman-adv/aggregation.h +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_AGGREGATION_H_ -#define _NET_BATMAN_ADV_AGGREGATION_H_ - -#include "main.h" - -/* is there another aggregated packet here? */ -static inline int aggregated_packet(int buff_pos, int packet_len, int num_hna) -{ - int next_buff_pos = buff_pos + BAT_PACKET_LEN + (num_hna * ETH_ALEN); - - return (next_buff_pos <= packet_len) && - (next_buff_pos <= MAX_AGGREGATION_BYTES); -} - -void add_bat_packet_to_list(struct bat_priv *bat_priv, - unsigned char *packet_buff, int packet_len, - struct batman_if *if_incoming, char own_packet, - unsigned long send_time); -void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff, - int packet_len, struct batman_if *if_incoming); - -#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */ diff --git a/drivers/staging/batman-adv/bat_debugfs.c b/drivers/staging/batman-adv/bat_debugfs.c deleted file mode 100644 index 57f84a9f8234..000000000000 --- a/drivers/staging/batman-adv/bat_debugfs.c +++ /dev/null @@ -1,343 +0,0 @@ -/* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" - -#include <linux/debugfs.h> - -#include "bat_debugfs.h" -#include "translation-table.h" -#include "originator.h" -#include "hard-interface.h" -#include "vis.h" -#include "icmp_socket.h" - -static struct dentry *bat_debugfs; - -#ifdef CONFIG_BATMAN_ADV_DEBUG -#define LOG_BUFF_MASK (log_buff_len-1) -#define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK]) - -static int log_buff_len = LOG_BUF_LEN; - -static void emit_log_char(struct debug_log *debug_log, char c) -{ - LOG_BUFF(debug_log->log_end) = c; - debug_log->log_end++; - - if (debug_log->log_end - debug_log->log_start > log_buff_len) - debug_log->log_start = debug_log->log_end - log_buff_len; -} - -static int fdebug_log(struct debug_log *debug_log, char *fmt, ...) -{ - int printed_len; - va_list args; - static char debug_log_buf[256]; - char *p; - unsigned long flags; - - if (!debug_log) - return 0; - - spin_lock_irqsave(&debug_log->lock, flags); - va_start(args, fmt); - printed_len = vscnprintf(debug_log_buf, sizeof(debug_log_buf), - fmt, args); - va_end(args); - - for (p = debug_log_buf; *p != 0; p++) - emit_log_char(debug_log, *p); - - spin_unlock_irqrestore(&debug_log->lock, flags); - - wake_up(&debug_log->queue_wait); - - return 0; -} - -int debug_log(struct bat_priv *bat_priv, char *fmt, ...) -{ - va_list args; - char tmp_log_buf[256]; - - va_start(args, fmt); - vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args); - fdebug_log(bat_priv->debug_log, "[%10u] %s", - (jiffies / HZ), tmp_log_buf); - va_end(args); - - return 0; -} - -static int log_open(struct inode *inode, struct file *file) -{ - nonseekable_open(inode, file); - file->private_data = inode->i_private; - inc_module_count(); - return 0; -} - -static int log_release(struct inode *inode, struct file *file) -{ - dec_module_count(); - return 0; -} - -static ssize_t log_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct bat_priv *bat_priv = file->private_data; - struct debug_log *debug_log = bat_priv->debug_log; - int error, i = 0; - char c; - unsigned long flags; - - if ((file->f_flags & O_NONBLOCK) && - !(debug_log->log_end - debug_log->log_start)) - return -EAGAIN; - - if ((!buf) || (count < 0)) - return -EINVAL; - - if (count == 0) - return 0; - - if (!access_ok(VERIFY_WRITE, buf, count)) - return -EFAULT; - - error = wait_event_interruptible(debug_log->queue_wait, - (debug_log->log_start - debug_log->log_end)); - - if (error) - return error; - - spin_lock_irqsave(&debug_log->lock, flags); - - while ((!error) && (i < count) && - (debug_log->log_start != debug_log->log_end)) { - c = LOG_BUFF(debug_log->log_start); - - debug_log->log_start++; - - spin_unlock_irqrestore(&debug_log->lock, flags); - - error = __put_user(c, buf); - - spin_lock_irqsave(&debug_log->lock, flags); - - buf++; - i++; - - } - - spin_unlock_irqrestore(&debug_log->lock, flags); - - if (!error) - return i; - - return error; -} - -static unsigned int log_poll(struct file *file, poll_table *wait) -{ - struct bat_priv *bat_priv = file->private_data; - struct debug_log *debug_log = bat_priv->debug_log; - - poll_wait(file, &debug_log->queue_wait, wait); - - if (debug_log->log_end - debug_log->log_start) - return POLLIN | POLLRDNORM; - - return 0; -} - -static const struct file_operations log_fops = { - .open = log_open, - .release = log_release, - .read = log_read, - .poll = log_poll, - .llseek = no_llseek, -}; - -static int debug_log_setup(struct bat_priv *bat_priv) -{ - struct dentry *d; - - if (!bat_priv->debug_dir) - goto err; - - bat_priv->debug_log = kzalloc(sizeof(struct debug_log), GFP_ATOMIC); - if (!bat_priv->debug_log) - goto err; - - spin_lock_init(&bat_priv->debug_log->lock); - init_waitqueue_head(&bat_priv->debug_log->queue_wait); - - d = debugfs_create_file("log", S_IFREG | S_IRUSR, - bat_priv->debug_dir, bat_priv, &log_fops); - if (d) - goto err; - - return 0; - -err: - return 1; -} - -static void debug_log_cleanup(struct bat_priv *bat_priv) -{ - kfree(bat_priv->debug_log); - bat_priv->debug_log = NULL; -} -#else /* CONFIG_BATMAN_ADV_DEBUG */ -static int debug_log_setup(struct bat_priv *bat_priv) -{ - bat_priv->debug_log = NULL; - return 0; -} - -static void debug_log_cleanup(struct bat_priv *bat_priv) -{ - return; -} -#endif - -static int originators_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, orig_seq_print_text, net_dev); -} - -static int transtable_global_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, hna_global_seq_print_text, net_dev); -} - -static int transtable_local_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, hna_local_seq_print_text, net_dev); -} - -static int vis_data_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, vis_seq_print_text, net_dev); -} - -struct bat_debuginfo { - struct attribute attr; - const struct file_operations fops; -}; - -#define BAT_DEBUGINFO(_name, _mode, _open) \ -struct bat_debuginfo bat_debuginfo_##_name = { \ - .attr = { .name = __stringify(_name), \ - .mode = _mode, }, \ - .fops = { .owner = THIS_MODULE, \ - .open = _open, \ - .read = seq_read, \ - .llseek = seq_lseek, \ - .release = single_release, \ - } \ -}; - -static BAT_DEBUGINFO(originators, S_IRUGO, originators_open); -static BAT_DEBUGINFO(transtable_global, S_IRUGO, transtable_global_open); -static BAT_DEBUGINFO(transtable_local, S_IRUGO, transtable_local_open); -static BAT_DEBUGINFO(vis_data, S_IRUGO, vis_data_open); - -static struct bat_debuginfo *mesh_debuginfos[] = { - &bat_debuginfo_originators, - &bat_debuginfo_transtable_global, - &bat_debuginfo_transtable_local, - &bat_debuginfo_vis_data, - NULL, -}; - -void debugfs_init(void) -{ - bat_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL); - if (bat_debugfs == ERR_PTR(-ENODEV)) - bat_debugfs = NULL; -} - -void debugfs_destroy(void) -{ - if (bat_debugfs) { - debugfs_remove_recursive(bat_debugfs); - bat_debugfs = NULL; - } -} - -int debugfs_add_meshif(struct net_device *dev) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - struct bat_debuginfo **bat_debug; - struct dentry *file; - - if (!bat_debugfs) - goto out; - - bat_priv->debug_dir = debugfs_create_dir(dev->name, bat_debugfs); - if (!bat_priv->debug_dir) - goto out; - - bat_socket_setup(bat_priv); - debug_log_setup(bat_priv); - - for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) { - file = debugfs_create_file(((*bat_debug)->attr).name, - S_IFREG | ((*bat_debug)->attr).mode, - bat_priv->debug_dir, - dev, &(*bat_debug)->fops); - if (!file) { - bat_err(dev, "Can't add debugfs file: %s/%s\n", - dev->name, ((*bat_debug)->attr).name); - goto rem_attr; - } - } - - return 0; -rem_attr: - debugfs_remove_recursive(bat_priv->debug_dir); - bat_priv->debug_dir = NULL; -out: -#ifdef CONFIG_DEBUG_FS - return -ENOMEM; -#else - return 0; -#endif /* CONFIG_DEBUG_FS */ -} - -void debugfs_del_meshif(struct net_device *dev) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - - debug_log_cleanup(bat_priv); - - if (bat_debugfs) { - debugfs_remove_recursive(bat_priv->debug_dir); - bat_priv->debug_dir = NULL; - } -} diff --git a/drivers/staging/batman-adv/bat_debugfs.h b/drivers/staging/batman-adv/bat_debugfs.h deleted file mode 100644 index 72df532b7d5f..000000000000 --- a/drivers/staging/batman-adv/bat_debugfs.h +++ /dev/null @@ -1,33 +0,0 @@ -/* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - - -#ifndef _NET_BATMAN_ADV_DEBUGFS_H_ -#define _NET_BATMAN_ADV_DEBUGFS_H_ - -#define DEBUGFS_BAT_SUBDIR "batman_adv" - -void debugfs_init(void); -void debugfs_destroy(void); -int debugfs_add_meshif(struct net_device *dev); -void debugfs_del_meshif(struct net_device *dev); - -#endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */ diff --git a/drivers/staging/batman-adv/bat_sysfs.c b/drivers/staging/batman-adv/bat_sysfs.c deleted file mode 100644 index bc17fb816300..000000000000 --- a/drivers/staging/batman-adv/bat_sysfs.c +++ /dev/null @@ -1,558 +0,0 @@ -/* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "bat_sysfs.h" -#include "translation-table.h" -#include "originator.h" -#include "hard-interface.h" -#include "vis.h" - -#define to_dev(obj) container_of(obj, struct device, kobj) - -#define BAT_ATTR(_name, _mode, _show, _store) \ -struct bat_attribute bat_attr_##_name = { \ - .attr = {.name = __stringify(_name), \ - .mode = _mode }, \ - .show = _show, \ - .store = _store, \ -}; - -static ssize_t show_aggr_ogms(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev)); - int aggr_status = atomic_read(&bat_priv->aggregation_enabled); - - return sprintf(buff, "%s\n", - aggr_status == 0 ? "disabled" : "enabled"); -} - -static ssize_t store_aggr_ogms(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct bat_priv *bat_priv = netdev_priv(net_dev); - int aggr_tmp = -1; - - if (((count == 2) && (buff[0] == '1')) || - (strncmp(buff, "enable", 6) == 0)) - aggr_tmp = 1; - - if (((count == 2) && (buff[0] == '0')) || - (strncmp(buff, "disable", 7) == 0)) - aggr_tmp = 0; - - if (aggr_tmp < 0) { - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - bat_info(net_dev, - "Invalid parameter for 'aggregate OGM' setting" - "received: %s\n", buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->aggregation_enabled) == aggr_tmp) - return count; - - bat_info(net_dev, "Changing aggregation from: %s to: %s\n", - atomic_read(&bat_priv->aggregation_enabled) == 1 ? - "enabled" : "disabled", aggr_tmp == 1 ? "enabled" : - "disabled"); - - atomic_set(&bat_priv->aggregation_enabled, (unsigned)aggr_tmp); - return count; -} - -static ssize_t show_bond(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev)); - int bond_status = atomic_read(&bat_priv->bonding_enabled); - - return sprintf(buff, "%s\n", - bond_status == 0 ? "disabled" : "enabled"); -} - -static ssize_t store_bond(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct bat_priv *bat_priv = netdev_priv(net_dev); - int bonding_enabled_tmp = -1; - - if (((count == 2) && (buff[0] == '1')) || - (strncmp(buff, "enable", 6) == 0)) - bonding_enabled_tmp = 1; - - if (((count == 2) && (buff[0] == '0')) || - (strncmp(buff, "disable", 7) == 0)) - bonding_enabled_tmp = 0; - - if (bonding_enabled_tmp < 0) { - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - bat_err(net_dev, - "Invalid parameter for 'bonding' setting received: " - "%s\n", buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->bonding_enabled) == bonding_enabled_tmp) - return count; - - bat_info(net_dev, "Changing bonding from: %s to: %s\n", - atomic_read(&bat_priv->bonding_enabled) == 1 ? - "enabled" : "disabled", - bonding_enabled_tmp == 1 ? "enabled" : "disabled"); - - atomic_set(&bat_priv->bonding_enabled, (unsigned)bonding_enabled_tmp); - return count; -} - -static ssize_t show_frag(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev)); - int frag_status = atomic_read(&bat_priv->frag_enabled); - - return sprintf(buff, "%s\n", - frag_status == 0 ? "disabled" : "enabled"); -} - -static ssize_t store_frag(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct bat_priv *bat_priv = netdev_priv(net_dev); - int frag_enabled_tmp = -1; - - if (((count == 2) && (buff[0] == '1')) || - (strncmp(buff, "enable", 6) == 0)) - frag_enabled_tmp = 1; - - if (((count == 2) && (buff[0] == '0')) || - (strncmp(buff, "disable", 7) == 0)) - frag_enabled_tmp = 0; - - if (frag_enabled_tmp < 0) { - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - bat_err(net_dev, - "Invalid parameter for 'fragmentation' setting on mesh" - "received: %s\n", buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->frag_enabled) == frag_enabled_tmp) - return count; - - bat_info(net_dev, "Changing fragmentation from: %s to: %s\n", - atomic_read(&bat_priv->frag_enabled) == 1 ? - "enabled" : "disabled", - frag_enabled_tmp == 1 ? "enabled" : "disabled"); - - atomic_set(&bat_priv->frag_enabled, (unsigned)frag_enabled_tmp); - update_min_mtu(net_dev); - return count; -} - -static ssize_t show_vis_mode(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev)); - int vis_mode = atomic_read(&bat_priv->vis_mode); - - return sprintf(buff, "%s\n", - vis_mode == VIS_TYPE_CLIENT_UPDATE ? - "client" : "server"); -} - -static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct bat_priv *bat_priv = netdev_priv(net_dev); - unsigned long val; - int ret, vis_mode_tmp = -1; - - ret = strict_strtoul(buff, 10, &val); - - if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) || - (strncmp(buff, "client", 6) == 0) || - (strncmp(buff, "off", 3) == 0)) - vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE; - - if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) || - (strncmp(buff, "server", 6) == 0)) - vis_mode_tmp = VIS_TYPE_SERVER_SYNC; - - if (vis_mode_tmp < 0) { - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - bat_info(net_dev, - "Invalid parameter for 'vis mode' setting received: " - "%s\n", buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp) - return count; - - bat_info(net_dev, "Changing vis mode from: %s to: %s\n", - atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ? - "client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ? - "client" : "server"); - - atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp); - return count; -} - -static ssize_t show_orig_interval(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev)); - - return sprintf(buff, "%i\n", - atomic_read(&bat_priv->orig_interval)); -} - -static ssize_t store_orig_interval(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct bat_priv *bat_priv = netdev_priv(net_dev); - unsigned long orig_interval_tmp; - int ret; - - ret = strict_strtoul(buff, 10, &orig_interval_tmp); - if (ret) { - bat_info(net_dev, "Invalid parameter for 'orig_interval' " - "setting received: %s\n", buff); - return -EINVAL; - } - - if (orig_interval_tmp < JITTER * 2) { - bat_info(net_dev, "New originator interval too small: %li " - "(min: %i)\n", orig_interval_tmp, JITTER * 2); - return -EINVAL; - } - - if (atomic_read(&bat_priv->orig_interval) == orig_interval_tmp) - return count; - - bat_info(net_dev, "Changing originator interval from: %i to: %li\n", - atomic_read(&bat_priv->orig_interval), - orig_interval_tmp); - - atomic_set(&bat_priv->orig_interval, orig_interval_tmp); - return count; -} - -#ifdef CONFIG_BATMAN_ADV_DEBUG -static ssize_t show_log_level(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct bat_priv *bat_priv = netdev_priv(to_net_dev(dev)); - int log_level = atomic_read(&bat_priv->log_level); - - return sprintf(buff, "%d\n", log_level); -} - -static ssize_t store_log_level(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct bat_priv *bat_priv = netdev_priv(net_dev); - unsigned long log_level_tmp; - int ret; - - ret = strict_strtoul(buff, 10, &log_level_tmp); - if (ret) { - bat_info(net_dev, "Invalid parameter for 'log_level' " - "setting received: %s\n", buff); - return -EINVAL; - } - - if (log_level_tmp > 3) { - bat_info(net_dev, "New log level too big: %li " - "(max: %i)\n", log_level_tmp, 3); - return -EINVAL; - } - - if (atomic_read(&bat_priv->log_level) == log_level_tmp) - return count; - - bat_info(net_dev, "Changing log level from: %i to: %li\n", - atomic_read(&bat_priv->log_level), - log_level_tmp); - - atomic_set(&bat_priv->log_level, (unsigned)log_level_tmp); - return count; -} -#endif - -static BAT_ATTR(aggregated_ogms, S_IRUGO | S_IWUSR, - show_aggr_ogms, store_aggr_ogms); -static BAT_ATTR(bonding, S_IRUGO | S_IWUSR, show_bond, store_bond); -static BAT_ATTR(fragmentation, S_IRUGO | S_IWUSR, show_frag, store_frag); -static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode); -static BAT_ATTR(orig_interval, S_IRUGO | S_IWUSR, - show_orig_interval, store_orig_interval); -#ifdef CONFIG_BATMAN_ADV_DEBUG -static BAT_ATTR(log_level, S_IRUGO | S_IWUSR, show_log_level, store_log_level); -#endif - -static struct bat_attribute *mesh_attrs[] = { - &bat_attr_aggregated_ogms, - &bat_attr_bonding, - &bat_attr_fragmentation, - &bat_attr_vis_mode, - &bat_attr_orig_interval, -#ifdef CONFIG_BATMAN_ADV_DEBUG - &bat_attr_log_level, -#endif - NULL, -}; - -int sysfs_add_meshif(struct net_device *dev) -{ - struct kobject *batif_kobject = &dev->dev.kobj; - struct bat_priv *bat_priv = netdev_priv(dev); - struct bat_attribute **bat_attr; - int err; - - bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR, - batif_kobject); - if (!bat_priv->mesh_obj) { - bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, - SYSFS_IF_MESH_SUBDIR); - goto out; - } - - for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(bat_priv->mesh_obj, - &((*bat_attr)->attr)); - if (err) { - bat_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, SYSFS_IF_MESH_SUBDIR, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); - - kobject_put(bat_priv->mesh_obj); - bat_priv->mesh_obj = NULL; -out: - return -ENOMEM; -} - -void sysfs_del_meshif(struct net_device *dev) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - struct bat_attribute **bat_attr; - - for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); - - kobject_put(bat_priv->mesh_obj); - bat_priv->mesh_obj = NULL; -} - -static ssize_t show_mesh_iface(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct batman_if *batman_if = get_batman_if_by_netdev(net_dev); - ssize_t length; - - if (!batman_if) - return 0; - - length = sprintf(buff, "%s\n", batman_if->if_status == IF_NOT_IN_USE ? - "none" : batman_if->soft_iface->name); - - hardif_put(batman_if); - - return length; -} - -static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr, - char *buff, size_t count) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct batman_if *batman_if = get_batman_if_by_netdev(net_dev); - int status_tmp = -1; - int ret; - - if (!batman_if) - return count; - - 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); - hardif_put(batman_if); - return -EINVAL; - } - - if (strncmp(buff, "none", 4) == 0) - status_tmp = IF_NOT_IN_USE; - else - status_tmp = IF_I_WANT_YOU; - - if ((batman_if->if_status == status_tmp) || ((batman_if->soft_iface) && - (strncmp(batman_if->soft_iface->name, buff, IFNAMSIZ) == 0))) { - hardif_put(batman_if); - return count; - } - - if (status_tmp == IF_NOT_IN_USE) { - rtnl_lock(); - hardif_disable_interface(batman_if); - rtnl_unlock(); - hardif_put(batman_if); - return count; - } - - /* if the interface already is in use */ - if (batman_if->if_status != IF_NOT_IN_USE) { - rtnl_lock(); - hardif_disable_interface(batman_if); - rtnl_unlock(); - } - - ret = hardif_enable_interface(batman_if, buff); - hardif_put(batman_if); - - return ret; -} - -static ssize_t show_iface_status(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct device *dev = to_dev(kobj->parent); - struct net_device *net_dev = to_net_dev(dev); - struct batman_if *batman_if = get_batman_if_by_netdev(net_dev); - ssize_t length; - - if (!batman_if) - return 0; - - switch (batman_if->if_status) { - case IF_TO_BE_REMOVED: - length = sprintf(buff, "disabling\n"); - break; - case IF_INACTIVE: - length = sprintf(buff, "inactive\n"); - break; - case IF_ACTIVE: - length = sprintf(buff, "active\n"); - break; - case IF_TO_BE_ACTIVATED: - length = sprintf(buff, "enabling\n"); - break; - case IF_NOT_IN_USE: - default: - length = sprintf(buff, "not in use\n"); - break; - } - - hardif_put(batman_if); - - return length; -} - -static BAT_ATTR(mesh_iface, S_IRUGO | S_IWUSR, - show_mesh_iface, store_mesh_iface); -static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL); - -static struct bat_attribute *batman_attrs[] = { - &bat_attr_mesh_iface, - &bat_attr_iface_status, - NULL, -}; - -int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) -{ - struct kobject *hardif_kobject = &dev->dev.kobj; - struct bat_attribute **bat_attr; - int err; - - *hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR, - hardif_kobject); - - if (!*hardif_obj) { - bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, - SYSFS_IF_BAT_SUBDIR); - goto out; - } - - for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); - if (err) { - bat_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, SYSFS_IF_BAT_SUBDIR, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); -out: - return -ENOMEM; -} - -void sysfs_del_hardif(struct kobject **hardif_obj) -{ - kobject_put(*hardif_obj); - *hardif_obj = NULL; -} diff --git a/drivers/staging/batman-adv/bat_sysfs.h b/drivers/staging/batman-adv/bat_sysfs.h deleted file mode 100644 index 7f186c007b4f..000000000000 --- a/drivers/staging/batman-adv/bat_sysfs.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - - -#ifndef _NET_BATMAN_ADV_SYSFS_H_ -#define _NET_BATMAN_ADV_SYSFS_H_ - -#define SYSFS_IF_MESH_SUBDIR "mesh" -#define SYSFS_IF_BAT_SUBDIR "batman_adv" - -struct bat_attribute { - struct attribute attr; - ssize_t (*show)(struct kobject *kobj, struct attribute *attr, - char *buf); - ssize_t (*store)(struct kobject *kobj, struct attribute *attr, - char *buf, size_t count); -}; - -int sysfs_add_meshif(struct net_device *dev); -void sysfs_del_meshif(struct net_device *dev); -int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev); -void sysfs_del_hardif(struct kobject **hardif_obj); - -#endif /* _NET_BATMAN_ADV_SYSFS_H_ */ diff --git a/drivers/staging/batman-adv/bitarray.c b/drivers/staging/batman-adv/bitarray.c deleted file mode 100644 index 814274fbaa2f..000000000000 --- a/drivers/staging/batman-adv/bitarray.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich, Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "bitarray.h" - -#include <linux/bitops.h> - -/* returns true if the corresponding bit in the given seq_bits indicates true - * and curr_seqno is within range of last_seqno */ -uint8_t get_bit_status(TYPE_OF_WORD *seq_bits, uint32_t last_seqno, - uint32_t curr_seqno) -{ - int32_t diff, word_offset, word_num; - - diff = last_seqno - curr_seqno; - if (diff < 0 || diff >= TQ_LOCAL_WINDOW_SIZE) { - return 0; - } else { - /* which word */ - word_num = (last_seqno - curr_seqno) / WORD_BIT_SIZE; - /* which position in the selected word */ - word_offset = (last_seqno - curr_seqno) % WORD_BIT_SIZE; - - if (seq_bits[word_num] & 1 << word_offset) - return 1; - else - return 0; - } -} - -/* turn corresponding bit on, so we can remember that we got the packet */ -void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n) -{ - int32_t word_offset, word_num; - - /* if too old, just drop it */ - if (n < 0 || n >= TQ_LOCAL_WINDOW_SIZE) - return; - - /* which word */ - word_num = n / WORD_BIT_SIZE; - /* which position in the selected word */ - word_offset = n % WORD_BIT_SIZE; - - seq_bits[word_num] |= 1 << word_offset; /* turn the position on */ -} - -/* shift the packet array by n places. */ -static void bit_shift(TYPE_OF_WORD *seq_bits, int32_t n) -{ - int32_t word_offset, word_num; - int32_t i; - - if (n <= 0 || n >= TQ_LOCAL_WINDOW_SIZE) - return; - - word_offset = n % WORD_BIT_SIZE;/* shift how much inside each word */ - word_num = n / WORD_BIT_SIZE; /* shift over how much (full) words */ - - for (i = NUM_WORDS - 1; i > word_num; i--) { - /* going from old to new, so we don't overwrite the data we copy - * from. - * - * left is high, right is low: FEDC BA98 7654 3210 - * ^^ ^^ - * vvvv - * ^^^^ = from, vvvvv =to, we'd have word_num==1 and - * word_offset==WORD_BIT_SIZE/2 ????? in this example. - * (=24 bits) - * - * our desired output would be: 9876 5432 1000 0000 - * */ - - seq_bits[i] = - (seq_bits[i - word_num] << word_offset) + - /* take the lower port from the left half, shift it left - * to its final position */ - (seq_bits[i - word_num - 1] >> - (WORD_BIT_SIZE-word_offset)); - /* and the upper part of the right half and shift it left to - * it's position */ - /* for our example that would be: word[0] = 9800 + 0076 = - * 9876 */ - } - /* now for our last word, i==word_num, we only have the it's "left" - * half. that's the 1000 word in our example.*/ - - seq_bits[i] = (seq_bits[i - word_num] << word_offset); - - /* pad the rest with 0, if there is anything */ - i--; - - for (; i >= 0; i--) - seq_bits[i] = 0; -} - -static void bit_reset_window(TYPE_OF_WORD *seq_bits) -{ - int i; - for (i = 0; i < NUM_WORDS; i++) - seq_bits[i] = 0; -} - - -/* receive and process one packet within the sequence number window. - * - * returns: - * 1 if the window was moved (either new or very old) - * 0 if the window was not moved/shifted. - */ -char bit_get_packet(void *priv, TYPE_OF_WORD *seq_bits, - int32_t seq_num_diff, int8_t set_mark) -{ - struct bat_priv *bat_priv = (struct bat_priv *)priv; - - /* sequence number is slightly older. We already got a sequence number - * higher than this one, so we just mark it. */ - - if ((seq_num_diff <= 0) && (seq_num_diff > -TQ_LOCAL_WINDOW_SIZE)) { - if (set_mark) - bit_mark(seq_bits, -seq_num_diff); - return 0; - } - - /* sequence number is slightly newer, so we shift the window and - * set the mark if required */ - - if ((seq_num_diff > 0) && (seq_num_diff < TQ_LOCAL_WINDOW_SIZE)) { - bit_shift(seq_bits, seq_num_diff); - - if (set_mark) - bit_mark(seq_bits, 0); - return 1; - } - - /* sequence number is much newer, probably missed a lot of packets */ - - if ((seq_num_diff >= TQ_LOCAL_WINDOW_SIZE) - || (seq_num_diff < EXPECTED_SEQNO_RANGE)) { - bat_dbg(DBG_BATMAN, bat_priv, - "We missed a lot of packets (%i) !\n", - seq_num_diff - 1); - bit_reset_window(seq_bits); - if (set_mark) - bit_mark(seq_bits, 0); - return 1; - } - - /* received a much older packet. The other host either restarted - * or the old packet got delayed somewhere in the network. The - * packet should be dropped without calling this function if the - * seqno window is protected. */ - - if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE) - || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) { - - bat_dbg(DBG_BATMAN, bat_priv, - "Other host probably restarted!\n"); - - bit_reset_window(seq_bits); - if (set_mark) - bit_mark(seq_bits, 0); - - return 1; - } - - /* never reached */ - return 0; -} - -/* count the hamming weight, how many good packets did we receive? just count - * the 1's. - */ -int bit_packet_count(TYPE_OF_WORD *seq_bits) -{ - int i, hamming = 0; - - for (i = 0; i < NUM_WORDS; i++) - hamming += hweight_long(seq_bits[i]); - - return hamming; -} diff --git a/drivers/staging/batman-adv/bitarray.h b/drivers/staging/batman-adv/bitarray.h deleted file mode 100644 index 77b1e61847e8..000000000000 --- a/drivers/staging/batman-adv/bitarray.h +++ /dev/null @@ -1,47 +0,0 @@ -/* - * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich, Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_BITARRAY_H_ -#define _NET_BATMAN_ADV_BITARRAY_H_ - -/* you should choose something big, if you don't want to waste cpu - * and keep the type in sync with bit_packet_count */ -#define TYPE_OF_WORD unsigned long -#define WORD_BIT_SIZE (sizeof(TYPE_OF_WORD) * 8) - -/* returns true if the corresponding bit in the given seq_bits indicates true - * and curr_seqno is within range of last_seqno */ -uint8_t get_bit_status(TYPE_OF_WORD *seq_bits, uint32_t last_seqno, - uint32_t curr_seqno); - -/* turn corresponding bit on, so we can remember that we got the packet */ -void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n); - - -/* receive and process one packet, returns 1 if received seq_num is considered - * new, 0 if old */ -char bit_get_packet(void *priv, TYPE_OF_WORD *seq_bits, - int32_t seq_num_diff, int8_t set_mark); - -/* count the hamming weight, how many good packets did we receive? */ -int bit_packet_count(TYPE_OF_WORD *seq_bits); - -#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */ diff --git a/drivers/staging/batman-adv/hard-interface.c b/drivers/staging/batman-adv/hard-interface.c deleted file mode 100644 index d85de82f941a..000000000000 --- a/drivers/staging/batman-adv/hard-interface.c +++ /dev/null @@ -1,647 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "hard-interface.h" -#include "soft-interface.h" -#include "send.h" -#include "translation-table.h" -#include "routing.h" -#include "bat_sysfs.h" -#include "originator.h" -#include "hash.h" - -#include <linux/if_arp.h> - -#define MIN(x, y) ((x) < (y) ? (x) : (y)) - -/* protect update critical side of if_list - but not the content */ -static DEFINE_SPINLOCK(if_list_lock); - -struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev) -{ - struct batman_if *batman_if; - - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if (batman_if->net_dev == net_dev) - goto out; - } - - batman_if = NULL; - -out: - if (batman_if) - hardif_hold(batman_if); - - rcu_read_unlock(); - return batman_if; -} - -static int is_valid_iface(struct net_device *net_dev) -{ - if (net_dev->flags & IFF_LOOPBACK) - return 0; - - if (net_dev->type != ARPHRD_ETHER) - return 0; - - if (net_dev->addr_len != ETH_ALEN) - return 0; - - /* no batman over batman */ -#ifdef HAVE_NET_DEVICE_OPS - if (net_dev->netdev_ops->ndo_start_xmit == interface_tx) - return 0; -#else - if (net_dev->hard_start_xmit == interface_tx) - return 0; -#endif - - /* Device is being bridged */ - /* if (net_dev->priv_flags & IFF_BRIDGE_PORT) - return 0; */ - - return 1; -} - -static struct batman_if *get_active_batman_if(struct net_device *soft_iface) -{ - struct batman_if *batman_if; - - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if (batman_if->soft_iface != soft_iface) - continue; - - if (batman_if->if_status == IF_ACTIVE) - goto out; - } - - batman_if = NULL; - -out: - if (batman_if) - hardif_hold(batman_if); - - rcu_read_unlock(); - return batman_if; -} - -static void update_primary_addr(struct bat_priv *bat_priv) -{ - struct vis_packet *vis_packet; - - vis_packet = (struct vis_packet *) - bat_priv->my_vis_info->skb_packet->data; - memcpy(vis_packet->vis_orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - memcpy(vis_packet->sender_orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); -} - -static void set_primary_if(struct bat_priv *bat_priv, - struct batman_if *batman_if) -{ - struct batman_packet *batman_packet; - struct batman_if *old_if; - - if (batman_if) - hardif_hold(batman_if); - - old_if = bat_priv->primary_if; - bat_priv->primary_if = batman_if; - - if (old_if) - hardif_put(old_if); - - if (!bat_priv->primary_if) - return; - - batman_packet = (struct batman_packet *)(batman_if->packet_buff); - batman_packet->flags = PRIMARIES_FIRST_HOP; - batman_packet->ttl = TTL; - - update_primary_addr(bat_priv); - - /*** - * hacky trick to make sure that we send the HNA information via - * our new primary interface - */ - atomic_set(&bat_priv->hna_local_changed, 1); -} - -static bool hardif_is_iface_up(struct batman_if *batman_if) -{ - if (batman_if->net_dev->flags & IFF_UP) - return true; - - return false; -} - -static void update_mac_addresses(struct batman_if *batman_if) -{ - memcpy(((struct batman_packet *)(batman_if->packet_buff))->orig, - batman_if->net_dev->dev_addr, ETH_ALEN); - memcpy(((struct batman_packet *)(batman_if->packet_buff))->prev_sender, - batman_if->net_dev->dev_addr, ETH_ALEN); -} - -static void check_known_mac_addr(struct net_device *net_dev) -{ - struct batman_if *batman_if; - - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if ((batman_if->if_status != IF_ACTIVE) && - (batman_if->if_status != IF_TO_BE_ACTIVATED)) - continue; - - if (batman_if->net_dev == net_dev) - continue; - - if (!compare_orig(batman_if->net_dev->dev_addr, - net_dev->dev_addr)) - continue; - - pr_warning("The newly added mac address (%pM) already exists " - "on: %s\n", net_dev->dev_addr, - batman_if->net_dev->name); - pr_warning("It is strongly recommended to keep mac addresses " - "unique to avoid problems!\n"); - } - rcu_read_unlock(); -} - -int hardif_min_mtu(struct net_device *soft_iface) -{ - struct bat_priv *bat_priv = netdev_priv(soft_iface); - struct batman_if *batman_if; - /* allow big frames if all devices are capable to do so - * (have MTU > 1500 + BAT_HEADER_LEN) */ - int min_mtu = ETH_DATA_LEN; - - if (atomic_read(&bat_priv->frag_enabled)) - goto out; - - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if ((batman_if->if_status != IF_ACTIVE) && - (batman_if->if_status != IF_TO_BE_ACTIVATED)) - continue; - - if (batman_if->soft_iface != soft_iface) - continue; - - min_mtu = MIN(batman_if->net_dev->mtu - BAT_HEADER_LEN, - min_mtu); - } - rcu_read_unlock(); -out: - return min_mtu; -} - -/* adjusts the MTU if a new interface with a smaller MTU appeared. */ -void update_min_mtu(struct net_device *soft_iface) -{ - int min_mtu; - - min_mtu = hardif_min_mtu(soft_iface); - if (soft_iface->mtu != min_mtu) - soft_iface->mtu = min_mtu; -} - -static void hardif_activate_interface(struct batman_if *batman_if) -{ - struct bat_priv *bat_priv; - - if (batman_if->if_status != IF_INACTIVE) - return; - - bat_priv = netdev_priv(batman_if->soft_iface); - - update_mac_addresses(batman_if); - batman_if->if_status = IF_TO_BE_ACTIVATED; - - /** - * the first active interface becomes our primary interface or - * the next active interface after the old primay interface was removed - */ - if (!bat_priv->primary_if) - set_primary_if(bat_priv, batman_if); - - bat_info(batman_if->soft_iface, "Interface activated: %s\n", - batman_if->net_dev->name); - - update_min_mtu(batman_if->soft_iface); - return; -} - -static void hardif_deactivate_interface(struct batman_if *batman_if) -{ - if ((batman_if->if_status != IF_ACTIVE) && - (batman_if->if_status != IF_TO_BE_ACTIVATED)) - return; - - batman_if->if_status = IF_INACTIVE; - - bat_info(batman_if->soft_iface, "Interface deactivated: %s\n", - batman_if->net_dev->name); - - update_min_mtu(batman_if->soft_iface); -} - -int hardif_enable_interface(struct batman_if *batman_if, char *iface_name) -{ - struct bat_priv *bat_priv; - struct batman_packet *batman_packet; - - if (batman_if->if_status != IF_NOT_IN_USE) - goto out; - - batman_if->soft_iface = dev_get_by_name(&init_net, iface_name); - - if (!batman_if->soft_iface) { - batman_if->soft_iface = softif_create(iface_name); - - if (!batman_if->soft_iface) - goto err; - - /* dev_get_by_name() increases the reference counter for us */ - dev_hold(batman_if->soft_iface); - } - - bat_priv = netdev_priv(batman_if->soft_iface); - batman_if->packet_len = BAT_PACKET_LEN; - batman_if->packet_buff = kmalloc(batman_if->packet_len, GFP_ATOMIC); - - if (!batman_if->packet_buff) { - bat_err(batman_if->soft_iface, "Can't add interface packet " - "(%s): out of memory\n", batman_if->net_dev->name); - goto err; - } - - batman_packet = (struct batman_packet *)(batman_if->packet_buff); - batman_packet->packet_type = BAT_PACKET; - batman_packet->version = COMPAT_VERSION; - batman_packet->flags = 0; - batman_packet->ttl = 2; - batman_packet->tq = TQ_MAX_VALUE; - batman_packet->num_hna = 0; - - batman_if->if_num = bat_priv->num_ifaces; - bat_priv->num_ifaces++; - batman_if->if_status = IF_INACTIVE; - orig_hash_add_if(batman_if, bat_priv->num_ifaces); - - batman_if->batman_adv_ptype.type = __constant_htons(ETH_P_BATMAN); - batman_if->batman_adv_ptype.func = batman_skb_recv; - batman_if->batman_adv_ptype.dev = batman_if->net_dev; - hardif_hold(batman_if); - dev_add_pack(&batman_if->batman_adv_ptype); - - atomic_set(&batman_if->seqno, 1); - atomic_set(&batman_if->frag_seqno, 1); - bat_info(batman_if->soft_iface, "Adding interface: %s\n", - batman_if->net_dev->name); - - if (atomic_read(&bat_priv->frag_enabled) && batman_if->net_dev->mtu < - ETH_DATA_LEN + BAT_HEADER_LEN) - bat_info(batman_if->soft_iface, - "The MTU of interface %s is too small (%i) to handle " - "the transport of batman-adv packets. Packets going " - "over this interface will be fragmented on layer2 " - "which could impact the performance. Setting the MTU " - "to %zi would solve the problem.\n", - batman_if->net_dev->name, batman_if->net_dev->mtu, - ETH_DATA_LEN + BAT_HEADER_LEN); - - if (!atomic_read(&bat_priv->frag_enabled) && batman_if->net_dev->mtu < - ETH_DATA_LEN + BAT_HEADER_LEN) - bat_info(batman_if->soft_iface, - "The MTU of interface %s is too small (%i) to handle " - "the transport of batman-adv packets. If you experience" - " problems getting traffic through try increasing the " - "MTU to %zi.\n", - batman_if->net_dev->name, batman_if->net_dev->mtu, - ETH_DATA_LEN + BAT_HEADER_LEN); - - if (hardif_is_iface_up(batman_if)) - hardif_activate_interface(batman_if); - else - bat_err(batman_if->soft_iface, "Not using interface %s " - "(retrying later): interface not active\n", - batman_if->net_dev->name); - - /* begin scheduling originator messages on that interface */ - schedule_own_packet(batman_if); - -out: - return 0; - -err: - return -ENOMEM; -} - -void hardif_disable_interface(struct batman_if *batman_if) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - - if (batman_if->if_status == IF_ACTIVE) - hardif_deactivate_interface(batman_if); - - if (batman_if->if_status != IF_INACTIVE) - return; - - bat_info(batman_if->soft_iface, "Removing interface: %s\n", - batman_if->net_dev->name); - dev_remove_pack(&batman_if->batman_adv_ptype); - hardif_put(batman_if); - - bat_priv->num_ifaces--; - orig_hash_del_if(batman_if, bat_priv->num_ifaces); - - if (batman_if == bat_priv->primary_if) { - struct batman_if *new_if; - - new_if = get_active_batman_if(batman_if->soft_iface); - set_primary_if(bat_priv, new_if); - - if (new_if) - hardif_put(new_if); - } - - kfree(batman_if->packet_buff); - batman_if->packet_buff = NULL; - batman_if->if_status = IF_NOT_IN_USE; - - /* delete all references to this batman_if */ - purge_orig_ref(bat_priv); - purge_outstanding_packets(bat_priv, batman_if); - dev_put(batman_if->soft_iface); - - /* nobody uses this interface anymore */ - if (!bat_priv->num_ifaces) - softif_destroy(batman_if->soft_iface); - - batman_if->soft_iface = NULL; -} - -static struct batman_if *hardif_add_interface(struct net_device *net_dev) -{ - struct batman_if *batman_if; - int ret; - - ret = is_valid_iface(net_dev); - if (ret != 1) - goto out; - - dev_hold(net_dev); - - batman_if = kmalloc(sizeof(struct batman_if), GFP_ATOMIC); - if (!batman_if) { - pr_err("Can't add interface (%s): out of memory\n", - net_dev->name); - goto release_dev; - } - - ret = sysfs_add_hardif(&batman_if->hardif_obj, net_dev); - if (ret) - goto free_if; - - batman_if->if_num = -1; - batman_if->net_dev = net_dev; - batman_if->soft_iface = NULL; - batman_if->if_status = IF_NOT_IN_USE; - INIT_LIST_HEAD(&batman_if->list); - atomic_set(&batman_if->refcnt, 0); - hardif_hold(batman_if); - - check_known_mac_addr(batman_if->net_dev); - - spin_lock(&if_list_lock); - list_add_tail_rcu(&batman_if->list, &if_list); - spin_unlock(&if_list_lock); - - /* extra reference for return */ - hardif_hold(batman_if); - return batman_if; - -free_if: - kfree(batman_if); -release_dev: - dev_put(net_dev); -out: - return NULL; -} - -static void hardif_remove_interface(struct batman_if *batman_if) -{ - /* first deactivate interface */ - if (batman_if->if_status != IF_NOT_IN_USE) - hardif_disable_interface(batman_if); - - if (batman_if->if_status != IF_NOT_IN_USE) - return; - - batman_if->if_status = IF_TO_BE_REMOVED; - synchronize_rcu(); - sysfs_del_hardif(&batman_if->hardif_obj); - hardif_put(batman_if); -} - -void hardif_remove_interfaces(void) -{ - struct batman_if *batman_if, *batman_if_tmp; - struct list_head if_queue; - - INIT_LIST_HEAD(&if_queue); - - spin_lock(&if_list_lock); - list_for_each_entry_safe(batman_if, batman_if_tmp, &if_list, list) { - list_del_rcu(&batman_if->list); - list_add_tail(&batman_if->list, &if_queue); - } - spin_unlock(&if_list_lock); - - rtnl_lock(); - list_for_each_entry_safe(batman_if, batman_if_tmp, &if_queue, list) { - hardif_remove_interface(batman_if); - } - rtnl_unlock(); -} - -static int hard_if_event(struct notifier_block *this, - unsigned long event, void *ptr) -{ - struct net_device *net_dev = (struct net_device *)ptr; - struct batman_if *batman_if = get_batman_if_by_netdev(net_dev); - struct bat_priv *bat_priv; - - if (!batman_if && event == NETDEV_REGISTER) - batman_if = hardif_add_interface(net_dev); - - if (!batman_if) - goto out; - - switch (event) { - case NETDEV_UP: - hardif_activate_interface(batman_if); - break; - case NETDEV_GOING_DOWN: - case NETDEV_DOWN: - hardif_deactivate_interface(batman_if); - break; - case NETDEV_UNREGISTER: - spin_lock(&if_list_lock); - list_del_rcu(&batman_if->list); - spin_unlock(&if_list_lock); - - hardif_remove_interface(batman_if); - break; - case NETDEV_CHANGEMTU: - if (batman_if->soft_iface) - update_min_mtu(batman_if->soft_iface); - break; - case NETDEV_CHANGEADDR: - if (batman_if->if_status == IF_NOT_IN_USE) { - hardif_put(batman_if); - goto out; - } - - check_known_mac_addr(batman_if->net_dev); - update_mac_addresses(batman_if); - - bat_priv = netdev_priv(batman_if->soft_iface); - if (batman_if == bat_priv->primary_if) - update_primary_addr(bat_priv); - break; - default: - break; - }; - hardif_put(batman_if); - -out: - return NOTIFY_DONE; -} - -/* receive a packet with the batman ethertype coming on a hard - * interface */ -int batman_skb_recv(struct sk_buff *skb, struct net_device *dev, - struct packet_type *ptype, struct net_device *orig_dev) -{ - struct bat_priv *bat_priv; - struct batman_packet *batman_packet; - struct batman_if *batman_if; - int ret; - - batman_if = container_of(ptype, struct batman_if, batman_adv_ptype); - skb = skb_share_check(skb, GFP_ATOMIC); - - /* skb was released by skb_share_check() */ - if (!skb) - goto err_out; - - /* packet should hold at least type and version */ - if (unlikely(!pskb_may_pull(skb, 2))) - goto err_free; - - /* expect a valid ethernet header here. */ - if (unlikely(skb->mac_len != sizeof(struct ethhdr) - || !skb_mac_header(skb))) - goto err_free; - - if (!batman_if->soft_iface) - goto err_free; - - bat_priv = netdev_priv(batman_if->soft_iface); - - if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) - goto err_free; - - /* discard frames on not active interfaces */ - if (batman_if->if_status != IF_ACTIVE) - goto err_free; - - batman_packet = (struct batman_packet *)skb->data; - - if (batman_packet->version != COMPAT_VERSION) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: incompatible batman version (%i)\n", - batman_packet->version); - goto err_free; - } - - /* all receive handlers return whether they received or reused - * the supplied skb. if not, we have to free the skb. */ - - switch (batman_packet->packet_type) { - /* batman originator packet */ - case BAT_PACKET: - ret = recv_bat_packet(skb, batman_if); - break; - - /* batman icmp packet */ - case BAT_ICMP: - ret = recv_icmp_packet(skb, batman_if); - break; - - /* unicast packet */ - case BAT_UNICAST: - ret = recv_unicast_packet(skb, batman_if); - break; - - /* fragmented unicast packet */ - case BAT_UNICAST_FRAG: - ret = recv_ucast_frag_packet(skb, batman_if); - break; - - /* broadcast packet */ - case BAT_BCAST: - ret = recv_bcast_packet(skb, batman_if); - break; - - /* vis packet */ - case BAT_VIS: - ret = recv_vis_packet(skb, batman_if); - break; - default: - ret = NET_RX_DROP; - } - - if (ret == NET_RX_DROP) - kfree_skb(skb); - - /* return NET_RX_SUCCESS in any case as we - * most probably dropped the packet for - * routing-logical reasons. */ - - return NET_RX_SUCCESS; - -err_free: - kfree_skb(skb); -err_out: - return NET_RX_DROP; -} - -struct notifier_block hard_if_notifier = { - .notifier_call = hard_if_event, -}; diff --git a/drivers/staging/batman-adv/hard-interface.h b/drivers/staging/batman-adv/hard-interface.h deleted file mode 100644 index d5508899065b..000000000000 --- a/drivers/staging/batman-adv/hard-interface.h +++ /dev/null @@ -1,58 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_ -#define _NET_BATMAN_ADV_HARD_INTERFACE_H_ - -#define IF_NOT_IN_USE 0 -#define IF_TO_BE_REMOVED 1 -#define IF_INACTIVE 2 -#define IF_ACTIVE 3 -#define IF_TO_BE_ACTIVATED 4 -#define IF_I_WANT_YOU 5 - -extern struct notifier_block hard_if_notifier; - -struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev); -int hardif_enable_interface(struct batman_if *batman_if, char *iface_name); -void hardif_disable_interface(struct batman_if *batman_if); -void hardif_remove_interfaces(void); -int batman_skb_recv(struct sk_buff *skb, - struct net_device *dev, - struct packet_type *ptype, - struct net_device *orig_dev); -int hardif_min_mtu(struct net_device *soft_iface); -void update_min_mtu(struct net_device *soft_iface); - -static inline void hardif_hold(struct batman_if *batman_if) -{ - atomic_inc(&batman_if->refcnt); -} - -static inline void hardif_put(struct batman_if *batman_if) -{ - if (atomic_dec_and_test(&batman_if->refcnt)) { - dev_put(batman_if->net_dev); - kfree(batman_if); - } -} - -#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */ diff --git a/drivers/staging/batman-adv/hash.c b/drivers/staging/batman-adv/hash.c deleted file mode 100644 index 8ef26eb4949d..000000000000 --- a/drivers/staging/batman-adv/hash.c +++ /dev/null @@ -1,306 +0,0 @@ -/* - * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich, Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "hash.h" - -/* clears the hash */ -static void hash_init(struct hashtable_t *hash) -{ - int i; - - hash->elements = 0; - - for (i = 0 ; i < hash->size; i++) - hash->table[i] = NULL; -} - -/* remove the hash structure. if hashdata_free_cb != NULL, this function will be - * called to remove the elements inside of the hash. if you don't remove the - * elements, memory might be leaked. */ -void hash_delete(struct hashtable_t *hash, hashdata_free_cb free_cb, void *arg) -{ - struct element_t *bucket, *last_bucket; - int i; - - for (i = 0; i < hash->size; i++) { - bucket = hash->table[i]; - - while (bucket != NULL) { - if (free_cb != NULL) - free_cb(bucket->data, arg); - - last_bucket = bucket; - bucket = bucket->next; - kfree(last_bucket); - } - } - - hash_destroy(hash); -} - -/* free only the hashtable and the hash itself. */ -void hash_destroy(struct hashtable_t *hash) -{ - kfree(hash->table); - kfree(hash); -} - -/* iterate though the hash. First element is selected if an iterator - * initialized with HASHIT() is supplied as iter. Use the returned - * (or supplied) iterator to access the elements until hash_iterate returns - * NULL. */ - -struct hash_it_t *hash_iterate(struct hashtable_t *hash, - struct hash_it_t *iter) -{ - if (!hash) - return NULL; - if (!iter) - return NULL; - - /* sanity checks first (if our bucket got deleted in the last - * iteration): */ - if (iter->bucket != NULL) { - if (iter->first_bucket != NULL) { - /* we're on the first element and it got removed after - * the last iteration. */ - if ((*iter->first_bucket) != iter->bucket) { - /* there are still other elements in the list */ - if ((*iter->first_bucket) != NULL) { - iter->prev_bucket = NULL; - iter->bucket = (*iter->first_bucket); - iter->first_bucket = - &hash->table[iter->index]; - return iter; - } else { - iter->bucket = NULL; - } - } - } else if (iter->prev_bucket != NULL) { - /* - * we're not on the first element, and the bucket got - * removed after the last iteration. the last bucket's - * next pointer is not pointing to our actual bucket - * anymore. select the next. - */ - if (iter->prev_bucket->next != iter->bucket) - iter->bucket = iter->prev_bucket; - } - } - - /* now as we are sane, select the next one if there is some */ - if (iter->bucket != NULL) { - if (iter->bucket->next != NULL) { - iter->prev_bucket = iter->bucket; - iter->bucket = iter->bucket->next; - iter->first_bucket = NULL; - return iter; - } - } - - /* if not returned yet, we've reached the last one on the index and have - * to search forward */ - iter->index++; - /* go through the entries of the hash table */ - while (iter->index < hash->size) { - if ((hash->table[iter->index]) != NULL) { - iter->prev_bucket = NULL; - iter->bucket = hash->table[iter->index]; - iter->first_bucket = &hash->table[iter->index]; - return iter; - } else { - iter->index++; - } - } - - /* nothing to iterate over anymore */ - return NULL; -} - -/* allocates and clears the hash */ -struct hashtable_t *hash_new(int size, hashdata_compare_cb compare, - hashdata_choose_cb choose) -{ - struct hashtable_t *hash; - - hash = kmalloc(sizeof(struct hashtable_t) , GFP_ATOMIC); - - if (hash == NULL) - return NULL; - - hash->size = size; - hash->table = kmalloc(sizeof(struct element_t *) * size, GFP_ATOMIC); - - if (hash->table == NULL) { - kfree(hash); - return NULL; - } - - hash_init(hash); - - hash->compare = compare; - hash->choose = choose; - - return hash; -} - -/* adds data to the hashtable. returns 0 on success, -1 on error */ -int hash_add(struct hashtable_t *hash, void *data) -{ - int index; - struct element_t *bucket, *prev_bucket = NULL; - - if (!hash) - return -1; - - index = hash->choose(data, hash->size); - bucket = hash->table[index]; - - while (bucket != NULL) { - if (hash->compare(bucket->data, data)) - return -1; - - prev_bucket = bucket; - bucket = bucket->next; - } - - /* found the tail of the list, add new element */ - bucket = kmalloc(sizeof(struct element_t), GFP_ATOMIC); - - if (bucket == NULL) - return -1; - - bucket->data = data; - bucket->next = NULL; - - /* and link it */ - if (prev_bucket == NULL) - hash->table[index] = bucket; - else - prev_bucket->next = bucket; - - hash->elements++; - return 0; -} - -/* finds data, based on the key in keydata. returns the found data on success, - * or NULL on error */ -void *hash_find(struct hashtable_t *hash, void *keydata) -{ - int index; - struct element_t *bucket; - - if (!hash) - return NULL; - - index = hash->choose(keydata , hash->size); - bucket = hash->table[index]; - - while (bucket != NULL) { - if (hash->compare(bucket->data, keydata)) - return bucket->data; - - bucket = bucket->next; - } - - return NULL; -} - -/* remove bucket (this might be used in hash_iterate() if you already found the - * bucket you want to delete and don't need the overhead to find it again with - * hash_remove(). But usually, you don't want to use this function, as it - * fiddles with hash-internals. */ -void *hash_remove_bucket(struct hashtable_t *hash, struct hash_it_t *hash_it_t) -{ - void *data_save; - - data_save = hash_it_t->bucket->data; - - if (hash_it_t->prev_bucket != NULL) - hash_it_t->prev_bucket->next = hash_it_t->bucket->next; - else if (hash_it_t->first_bucket != NULL) - (*hash_it_t->first_bucket) = hash_it_t->bucket->next; - - kfree(hash_it_t->bucket); - hash->elements--; - - return data_save; -} - -/* removes data from hash, if found. returns pointer do data on success, so you - * can remove the used structure yourself, or NULL on error . data could be the - * structure you use with just the key filled, we just need the key for - * comparing. */ -void *hash_remove(struct hashtable_t *hash, void *data) -{ - struct hash_it_t hash_it_t; - - hash_it_t.index = hash->choose(data, hash->size); - hash_it_t.bucket = hash->table[hash_it_t.index]; - hash_it_t.prev_bucket = NULL; - - while (hash_it_t.bucket != NULL) { - if (hash->compare(hash_it_t.bucket->data, data)) { - hash_it_t.first_bucket = - (hash_it_t.bucket == - hash->table[hash_it_t.index] ? - &hash->table[hash_it_t.index] : NULL); - return hash_remove_bucket(hash, &hash_it_t); - } - - hash_it_t.prev_bucket = hash_it_t.bucket; - hash_it_t.bucket = hash_it_t.bucket->next; - } - - return NULL; -} - -/* resize the hash, returns the pointer to the new hash or NULL on - * error. removes the old hash on success. */ -struct hashtable_t *hash_resize(struct hashtable_t *hash, int size) -{ - struct hashtable_t *new_hash; - struct element_t *bucket; - int i; - - /* initialize a new hash with the new size */ - new_hash = hash_new(size, hash->compare, hash->choose); - - if (new_hash == NULL) - return NULL; - - /* copy the elements */ - for (i = 0; i < hash->size; i++) { - bucket = hash->table[i]; - - while (bucket != NULL) { - hash_add(new_hash, bucket->data); - bucket = bucket->next; - } - } - - /* remove hash and eventual overflow buckets but not the content - * itself. */ - hash_delete(hash, NULL, NULL); - - return new_hash; -} diff --git a/drivers/staging/batman-adv/hash.h b/drivers/staging/batman-adv/hash.h deleted file mode 100644 index 2c8e1762389f..000000000000 --- a/drivers/staging/batman-adv/hash.h +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich, Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_HASH_H_ -#define _NET_BATMAN_ADV_HASH_H_ - -#define HASHIT(name) struct hash_it_t name = { \ - .index = -1, .bucket = NULL, \ - .prev_bucket = NULL, \ - .first_bucket = NULL } - - -typedef int (*hashdata_compare_cb)(void *, void *); -typedef int (*hashdata_choose_cb)(void *, int); -typedef void (*hashdata_free_cb)(void *, void *); - -struct element_t { - void *data; /* pointer to the data */ - struct element_t *next; /* overflow bucket pointer */ -}; - -struct hash_it_t { - int index; - struct element_t *bucket; - struct element_t *prev_bucket; - struct element_t **first_bucket; -}; - -struct hashtable_t { - struct element_t **table; /* the hashtable itself, with the buckets */ - int elements; /* number of elements registered */ - int size; /* size of hashtable */ - hashdata_compare_cb compare;/* callback to a compare function. should - * compare 2 element datas for their keys, - * return 0 if same and not 0 if not - * same */ - hashdata_choose_cb choose; /* the hashfunction, should return an index - * based on the key in the data of the first - * argument and the size the second */ -}; - -/* allocates and clears the hash */ -struct hashtable_t *hash_new(int size, hashdata_compare_cb compare, - hashdata_choose_cb choose); - -/* remove bucket (this might be used in hash_iterate() if you already found the - * bucket you want to delete and don't need the overhead to find it again with - * hash_remove(). But usually, you don't want to use this function, as it - * fiddles with hash-internals. */ -void *hash_remove_bucket(struct hashtable_t *hash, struct hash_it_t *hash_it_t); - -/* remove the hash structure. if hashdata_free_cb != NULL, this function will be - * called to remove the elements inside of the hash. if you don't remove the - * elements, memory might be leaked. */ -void hash_delete(struct hashtable_t *hash, hashdata_free_cb free_cb, void *arg); - -/* free only the hashtable and the hash itself. */ -void hash_destroy(struct hashtable_t *hash); - -/* adds data to the hashtable. returns 0 on success, -1 on error */ -int hash_add(struct hashtable_t *hash, void *data); - -/* removes data from hash, if found. returns pointer do data on success, so you - * can remove the used structure yourself, or NULL on error . data could be the - * structure you use with just the key filled, we just need the key for - * comparing. */ -void *hash_remove(struct hashtable_t *hash, void *data); - -/* finds data, based on the key in keydata. returns the found data on success, - * or NULL on error */ -void *hash_find(struct hashtable_t *hash, void *keydata); - -/* resize the hash, returns the pointer to the new hash or NULL on - * error. removes the old hash on success */ -struct hashtable_t *hash_resize(struct hashtable_t *hash, int size); - -/* iterate though the hash. first element is selected with iter_in NULL. use - * the returned iterator to access the elements until hash_it_t returns NULL. */ -struct hash_it_t *hash_iterate(struct hashtable_t *hash, - struct hash_it_t *iter_in); - -#endif /* _NET_BATMAN_ADV_HASH_H_ */ diff --git a/drivers/staging/batman-adv/icmp_socket.c b/drivers/staging/batman-adv/icmp_socket.c deleted file mode 100644 index 48856ca73b6a..000000000000 --- a/drivers/staging/batman-adv/icmp_socket.c +++ /dev/null @@ -1,359 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include <linux/debugfs.h> -#include <linux/slab.h> -#include "icmp_socket.h" -#include "send.h" -#include "types.h" -#include "hash.h" -#include "hard-interface.h" - - -static struct socket_client *socket_client_hash[256]; - -static void bat_socket_add_packet(struct socket_client *socket_client, - struct icmp_packet_rr *icmp_packet, - size_t icmp_len); - -void bat_socket_init(void) -{ - memset(socket_client_hash, 0, sizeof(socket_client_hash)); -} - -static int bat_socket_open(struct inode *inode, struct file *file) -{ - unsigned int i; - struct socket_client *socket_client; - - nonseekable_open(inode, file); - - socket_client = kmalloc(sizeof(struct socket_client), GFP_KERNEL); - - if (!socket_client) - return -ENOMEM; - - for (i = 0; i < ARRAY_SIZE(socket_client_hash); i++) { - if (!socket_client_hash[i]) { - socket_client_hash[i] = socket_client; - break; - } - } - - if (i == ARRAY_SIZE(socket_client_hash)) { - pr_err("Error - can't add another packet client: " - "maximum number of clients reached\n"); - kfree(socket_client); - 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; - - inc_module_count(); - return 0; -} - -static int bat_socket_release(struct inode *inode, struct file *file) -{ - struct socket_client *socket_client = file->private_data; - struct socket_packet *socket_packet; - struct list_head *list_pos, *list_pos_tmp; - unsigned long flags; - - spin_lock_irqsave(&socket_client->lock, flags); - - /* for all packets in the queue ... */ - list_for_each_safe(list_pos, list_pos_tmp, &socket_client->queue_list) { - socket_packet = list_entry(list_pos, - struct socket_packet, list); - - list_del(list_pos); - kfree(socket_packet); - } - - socket_client_hash[socket_client->index] = NULL; - spin_unlock_irqrestore(&socket_client->lock, flags); - - kfree(socket_client); - dec_module_count(); - - return 0; -} - -static ssize_t bat_socket_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct socket_client *socket_client = file->private_data; - struct socket_packet *socket_packet; - size_t packet_len; - int error; - unsigned long flags; - - if ((file->f_flags & O_NONBLOCK) && (socket_client->queue_len == 0)) - return -EAGAIN; - - if ((!buf) || (count < sizeof(struct icmp_packet))) - return -EINVAL; - - if (!access_ok(VERIFY_WRITE, buf, count)) - return -EFAULT; - - error = wait_event_interruptible(socket_client->queue_wait, - socket_client->queue_len); - - if (error) - return error; - - spin_lock_irqsave(&socket_client->lock, flags); - - socket_packet = list_first_entry(&socket_client->queue_list, - struct socket_packet, list); - list_del(&socket_packet->list); - socket_client->queue_len--; - - spin_unlock_irqrestore(&socket_client->lock, flags); - - error = __copy_to_user(buf, &socket_packet->icmp_packet, - socket_packet->icmp_len); - - packet_len = socket_packet->icmp_len; - kfree(socket_packet); - - if (error) - return -EFAULT; - - return packet_len; -} - -static ssize_t bat_socket_write(struct file *file, const char __user *buff, - size_t len, loff_t *off) -{ - struct socket_client *socket_client = file->private_data; - struct bat_priv *bat_priv = socket_client->bat_priv; - struct sk_buff *skb; - struct icmp_packet_rr *icmp_packet; - - struct orig_node *orig_node; - struct batman_if *batman_if; - size_t packet_len = sizeof(struct icmp_packet); - uint8_t dstaddr[ETH_ALEN]; - unsigned long flags; - - if (len < sizeof(struct icmp_packet)) { - bat_dbg(DBG_BATMAN, bat_priv, - "Error - can't send packet from char device: " - "invalid packet size\n"); - return -EINVAL; - } - - if (!bat_priv->primary_if) - return -EFAULT; - - if (len >= sizeof(struct icmp_packet_rr)) - packet_len = sizeof(struct icmp_packet_rr); - - skb = dev_alloc_skb(packet_len + sizeof(struct ethhdr)); - if (!skb) - return -ENOMEM; - - skb_reserve(skb, sizeof(struct ethhdr)); - icmp_packet = (struct icmp_packet_rr *)skb_put(skb, packet_len); - - if (!access_ok(VERIFY_READ, buff, packet_len)) { - len = -EFAULT; - goto free_skb; - } - - if (__copy_from_user(icmp_packet, buff, packet_len)) { - len = -EFAULT; - goto free_skb; - } - - if (icmp_packet->packet_type != BAT_ICMP) { - bat_dbg(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; - } - - if (icmp_packet->msg_type != ECHO_REQUEST) { - bat_dbg(DBG_BATMAN, bat_priv, - "Error - can't send packet from char device: " - "got bogus message type (expected: ECHO_REQUEST)\n"); - len = -EINVAL; - goto free_skb; - } - - icmp_packet->uid = socket_client->index; - - if (icmp_packet->version != COMPAT_VERSION) { - icmp_packet->msg_type = PARAMETER_PROBLEM; - icmp_packet->ttl = COMPAT_VERSION; - bat_socket_add_packet(socket_client, icmp_packet, packet_len); - goto free_skb; - } - - if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) - goto dst_unreach; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, - icmp_packet->dst)); - - if (!orig_node) - goto unlock; - - if (!orig_node->router) - goto unlock; - - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - if (!batman_if) - goto dst_unreach; - - if (batman_if->if_status != IF_ACTIVE) - goto dst_unreach; - - memcpy(icmp_packet->orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - - if (packet_len == sizeof(struct icmp_packet_rr)) - memcpy(icmp_packet->rr, batman_if->net_dev->dev_addr, ETH_ALEN); - - - send_skb_packet(skb, batman_if, dstaddr); - - goto out; - -unlock: - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); -dst_unreach: - icmp_packet->msg_type = DESTINATION_UNREACHABLE; - bat_socket_add_packet(socket_client, icmp_packet, packet_len); -free_skb: - kfree_skb(skb); -out: - return len; -} - -static unsigned int bat_socket_poll(struct file *file, poll_table *wait) -{ - struct socket_client *socket_client = file->private_data; - - poll_wait(file, &socket_client->queue_wait, wait); - - if (socket_client->queue_len > 0) - return POLLIN | POLLRDNORM; - - return 0; -} - -static const struct file_operations fops = { - .owner = THIS_MODULE, - .open = bat_socket_open, - .release = bat_socket_release, - .read = bat_socket_read, - .write = bat_socket_write, - .poll = bat_socket_poll, - .llseek = no_llseek, -}; - -int bat_socket_setup(struct bat_priv *bat_priv) -{ - struct dentry *d; - - if (!bat_priv->debug_dir) - goto err; - - d = debugfs_create_file(ICMP_SOCKET, S_IFREG | S_IWUSR | S_IRUSR, - bat_priv->debug_dir, bat_priv, &fops); - if (d) - goto err; - - return 0; - -err: - return 1; -} - -static void bat_socket_add_packet(struct socket_client *socket_client, - struct icmp_packet_rr *icmp_packet, - size_t icmp_len) -{ - struct socket_packet *socket_packet; - unsigned long flags; - - socket_packet = kmalloc(sizeof(struct socket_packet), GFP_ATOMIC); - - if (!socket_packet) - return; - - INIT_LIST_HEAD(&socket_packet->list); - memcpy(&socket_packet->icmp_packet, icmp_packet, icmp_len); - socket_packet->icmp_len = icmp_len; - - spin_lock_irqsave(&socket_client->lock, flags); - - /* while waiting for the lock the socket_client could have been - * deleted */ - if (!socket_client_hash[icmp_packet->uid]) { - spin_unlock_irqrestore(&socket_client->lock, flags); - 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 socket_packet, list); - - list_del(&socket_packet->list); - kfree(socket_packet); - socket_client->queue_len--; - } - - spin_unlock_irqrestore(&socket_client->lock, flags); - - wake_up(&socket_client->queue_wait); -} - -void bat_socket_receive_packet(struct icmp_packet_rr *icmp_packet, - size_t icmp_len) -{ - struct socket_client *hash = socket_client_hash[icmp_packet->uid]; - - if (hash) - bat_socket_add_packet(hash, icmp_packet, icmp_len); -} diff --git a/drivers/staging/batman-adv/icmp_socket.h b/drivers/staging/batman-adv/icmp_socket.h deleted file mode 100644 index bf9b348cde27..000000000000 --- a/drivers/staging/batman-adv/icmp_socket.h +++ /dev/null @@ -1,34 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_ICMP_SOCKET_H_ -#define _NET_BATMAN_ADV_ICMP_SOCKET_H_ - -#include "types.h" - -#define ICMP_SOCKET "socket" - -void bat_socket_init(void); -int bat_socket_setup(struct bat_priv *bat_priv); -void bat_socket_receive_packet(struct icmp_packet_rr *icmp_packet, - size_t icmp_len); - -#endif /* _NET_BATMAN_ADV_ICMP_SOCKET_H_ */ diff --git a/drivers/staging/batman-adv/main.c b/drivers/staging/batman-adv/main.c deleted file mode 100644 index 0587940d2723..000000000000 --- a/drivers/staging/batman-adv/main.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "bat_sysfs.h" -#include "bat_debugfs.h" -#include "routing.h" -#include "send.h" -#include "originator.h" -#include "soft-interface.h" -#include "icmp_socket.h" -#include "translation-table.h" -#include "hard-interface.h" -#include "types.h" -#include "vis.h" -#include "hash.h" - -struct list_head if_list; - -unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; - -struct workqueue_struct *bat_event_workqueue; - -static int __init batman_init(void) -{ - INIT_LIST_HEAD(&if_list); - - /* the name should not be longer than 10 chars - see - * http://lwn.net/Articles/23634/ */ - bat_event_workqueue = create_singlethread_workqueue("bat_events"); - - if (!bat_event_workqueue) - return -ENOMEM; - - bat_socket_init(); - debugfs_init(); - - register_netdevice_notifier(&hard_if_notifier); - - pr_info("B.A.T.M.A.N. advanced %s%s (compatibility version %i) " - "loaded\n", SOURCE_VERSION, REVISION_VERSION_STR, - COMPAT_VERSION); - - return 0; -} - -static void __exit batman_exit(void) -{ - debugfs_destroy(); - unregister_netdevice_notifier(&hard_if_notifier); - hardif_remove_interfaces(); - - flush_workqueue(bat_event_workqueue); - destroy_workqueue(bat_event_workqueue); - bat_event_workqueue = NULL; - - rcu_barrier(); -} - -int mesh_init(struct net_device *soft_iface) -{ - struct bat_priv *bat_priv = netdev_priv(soft_iface); - - spin_lock_init(&bat_priv->orig_hash_lock); - spin_lock_init(&bat_priv->forw_bat_list_lock); - spin_lock_init(&bat_priv->forw_bcast_list_lock); - spin_lock_init(&bat_priv->hna_lhash_lock); - spin_lock_init(&bat_priv->hna_ghash_lock); - spin_lock_init(&bat_priv->vis_hash_lock); - spin_lock_init(&bat_priv->vis_list_lock); - - INIT_HLIST_HEAD(&bat_priv->forw_bat_list); - INIT_HLIST_HEAD(&bat_priv->forw_bcast_list); - - if (originator_init(bat_priv) < 1) - goto err; - - if (hna_local_init(bat_priv) < 1) - goto err; - - if (hna_global_init(bat_priv) < 1) - goto err; - - hna_local_add(soft_iface, soft_iface->dev_addr); - - if (vis_init(bat_priv) < 1) - goto err; - - atomic_set(&bat_priv->mesh_state, MESH_ACTIVE); - goto end; - -err: - pr_err("Unable to allocate memory for mesh information structures: " - "out of mem ?\n"); - mesh_free(soft_iface); - return -1; - -end: - return 0; -} - -void mesh_free(struct net_device *soft_iface) -{ - struct bat_priv *bat_priv = netdev_priv(soft_iface); - - atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING); - - purge_outstanding_packets(bat_priv, NULL); - - vis_quit(bat_priv); - - originator_free(bat_priv); - - hna_local_free(bat_priv); - hna_global_free(bat_priv); - - atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); -} - -void inc_module_count(void) -{ - try_module_get(THIS_MODULE); -} - -void dec_module_count(void) -{ - module_put(THIS_MODULE); -} - -/* returns 1 if they are the same originator */ - -int compare_orig(void *data1, void *data2) -{ - return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); -} - -/* hashfunction to choose an entry in a hash table of given size */ -/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */ -int choose_orig(void *data, int32_t size) -{ - unsigned char *key = data; - uint32_t hash = 0; - size_t i; - - for (i = 0; i < 6; i++) { - hash += key[i]; - hash += (hash << 10); - hash ^= (hash >> 6); - } - - hash += (hash << 3); - hash ^= (hash >> 11); - hash += (hash << 15); - - return hash % size; -} - -int is_my_mac(uint8_t *addr) -{ - struct batman_if *batman_if; - - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if (batman_if->if_status != IF_ACTIVE) - continue; - - if (compare_orig(batman_if->net_dev->dev_addr, addr)) { - rcu_read_unlock(); - return 1; - } - } - rcu_read_unlock(); - return 0; - -} - -int is_bcast(uint8_t *addr) -{ - return (addr[0] == (uint8_t)0xff) && (addr[1] == (uint8_t)0xff); -} - -int is_mcast(uint8_t *addr) -{ - return *addr & 0x01; -} - -module_init(batman_init); -module_exit(batman_exit); - -MODULE_LICENSE("GPL"); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_SUPPORTED_DEVICE(DRIVER_DEVICE); -#ifdef REVISION_VERSION -MODULE_VERSION(SOURCE_VERSION "-" REVISION_VERSION); -#else -MODULE_VERSION(SOURCE_VERSION); -#endif diff --git a/drivers/staging/batman-adv/main.h b/drivers/staging/batman-adv/main.h deleted file mode 100644 index 5e3f51681f5e..000000000000 --- a/drivers/staging/batman-adv/main.h +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_MAIN_H_ -#define _NET_BATMAN_ADV_MAIN_H_ - -/* Kernel Programming */ -#define LINUX - -#define DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \ - "Simon Wunderlich <siwu@hrz.tu-chemnitz.de>" -#define DRIVER_DESC "B.A.T.M.A.N. advanced" -#define DRIVER_DEVICE "batman-adv" - -#define SOURCE_VERSION "next" - - -/* B.A.T.M.A.N. parameters */ - -#define TQ_MAX_VALUE 255 -#define JITTER 20 -#define TTL 50 /* Time To Live of broadcast messages */ - -#define PURGE_TIMEOUT 200 /* purge originators after time in seconds if no - * valid packet comes in -> TODO: check - * influence on TQ_LOCAL_WINDOW_SIZE */ -#define LOCAL_HNA_TIMEOUT 3600 /* in seconds */ - -#define TQ_LOCAL_WINDOW_SIZE 64 /* sliding packet range of received originator - * messages in squence numbers (should be a - * multiple of our word size) */ -#define TQ_GLOBAL_WINDOW_SIZE 5 -#define TQ_LOCAL_BIDRECT_SEND_MINIMUM 1 -#define TQ_LOCAL_BIDRECT_RECV_MINIMUM 1 -#define TQ_TOTAL_BIDRECT_LIMIT 1 - -#define TQ_HOP_PENALTY 10 - -#define NUM_WORDS (TQ_LOCAL_WINDOW_SIZE / WORD_BIT_SIZE) - -#define PACKBUFF_SIZE 2000 -#define LOG_BUF_LEN 8192 /* has to be a power of 2 */ - -#define VIS_INTERVAL 5000 /* 5 seconds */ - -/* how much worse secondary interfaces may be to - * to be considered as bonding candidates */ - -#define BONDING_TQ_THRESHOLD 50 - -#define MAX_AGGREGATION_BYTES 512 /* should not be bigger than 512 bytes or - * change the size of - * forw_packet->direct_link_flags */ -#define MAX_AGGREGATION_MS 100 - -#define RESET_PROTECTION_MS 30000 -#define EXPECTED_SEQNO_RANGE 65536 -/* don't reset again within 30 seconds */ - -#define MESH_INACTIVE 0 -#define MESH_ACTIVE 1 -#define MESH_DEACTIVATING 2 - -#define BCAST_QUEUE_LEN 256 -#define BATMAN_QUEUE_LEN 256 - -/* - * Debug Messages - */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt /* Append 'batman-adv: ' before - * kernel messages */ - -#define DBG_BATMAN 1 /* all messages related to routing / flooding / - * broadcasting / etc */ -#define DBG_ROUTES 2 /* route or hna added / changed / deleted */ -#define DBG_ALL 3 - -#define LOG_BUF_LEN 8192 /* has to be a power of 2 */ - - -/* - * Vis - */ - -/* #define VIS_SUBCLUSTERS_DISABLED */ - -/* - * Kernel headers - */ - -#include <linux/mutex.h> /* mutex */ -#include <linux/module.h> /* needed by all modules */ -#include <linux/netdevice.h> /* netdevice */ -#include <linux/if_ether.h> /* ethernet header */ -#include <linux/poll.h> /* poll_table */ -#include <linux/kthread.h> /* kernel threads */ -#include <linux/pkt_sched.h> /* schedule types */ -#include <linux/workqueue.h> /* workqueue */ -#include <linux/slab.h> -#include <net/sock.h> /* struct sock */ -#include <linux/jiffies.h> -#include <linux/seq_file.h> -#include "types.h" - -#ifndef REVISION_VERSION -#define REVISION_VERSION_STR "" -#else -#define REVISION_VERSION_STR " "REVISION_VERSION -#endif - -extern struct list_head if_list; - -extern unsigned char broadcast_addr[]; -extern struct workqueue_struct *bat_event_workqueue; - -int mesh_init(struct net_device *soft_iface); -void mesh_free(struct net_device *soft_iface); -void inc_module_count(void); -void dec_module_count(void); -int compare_orig(void *data1, void *data2); -int choose_orig(void *data, int32_t size); -int is_my_mac(uint8_t *addr); -int is_bcast(uint8_t *addr); -int is_mcast(uint8_t *addr); - -#ifdef CONFIG_BATMAN_ADV_DEBUG -int debug_log(struct bat_priv *bat_priv, char *fmt, ...); - -#define bat_dbg(type, bat_priv, fmt, arg...) \ - do { \ - if (atomic_read(&bat_priv->log_level) & type) \ - debug_log(bat_priv, fmt, ## arg); \ - } \ - while (0) -#else /* !CONFIG_BATMAN_ADV_DEBUG */ -static inline void bat_dbg(char type __attribute__((unused)), - struct bat_priv *bat_priv __attribute__((unused)), - char *fmt __attribute__((unused)), ...) -{ -} -#endif - -#define bat_warning(net_dev, fmt, arg...) \ - do { \ - struct net_device *_netdev = (net_dev); \ - struct bat_priv *_batpriv = netdev_priv(_netdev); \ - bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \ - pr_warning("%s: " fmt, _netdev->name, ## arg); \ - } while (0) -#define bat_info(net_dev, fmt, arg...) \ - do { \ - struct net_device *_netdev = (net_dev); \ - struct bat_priv *_batpriv = netdev_priv(_netdev); \ - bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \ - pr_info("%s: " fmt, _netdev->name, ## arg); \ - } while (0) -#define bat_err(net_dev, fmt, arg...) \ - do { \ - struct net_device *_netdev = (net_dev); \ - struct bat_priv *_batpriv = netdev_priv(_netdev); \ - bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \ - pr_err("%s: " fmt, _netdev->name, ## arg); \ - } while (0) - -#endif /* _NET_BATMAN_ADV_MAIN_H_ */ diff --git a/drivers/staging/batman-adv/originator.c b/drivers/staging/batman-adv/originator.c deleted file mode 100644 index 55270080a44b..000000000000 --- a/drivers/staging/batman-adv/originator.c +++ /dev/null @@ -1,533 +0,0 @@ -/* - * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -/* increase the reference counter for this originator */ - -#include "main.h" -#include "originator.h" -#include "hash.h" -#include "translation-table.h" -#include "routing.h" -#include "hard-interface.h" -#include "unicast.h" - -static void purge_orig(struct work_struct *work); - -static void start_purge_timer(struct bat_priv *bat_priv) -{ - INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig); - queue_delayed_work(bat_event_workqueue, &bat_priv->orig_work, 1 * HZ); -} - -int originator_init(struct bat_priv *bat_priv) -{ - unsigned long flags; - if (bat_priv->orig_hash) - return 1; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - bat_priv->orig_hash = hash_new(128, compare_orig, choose_orig); - - if (!bat_priv->orig_hash) - goto err; - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - start_purge_timer(bat_priv); - return 1; - -err: - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return 0; -} - -struct neigh_node * -create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, - uint8_t *neigh, struct batman_if *if_incoming) -{ - struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct neigh_node *neigh_node; - - bat_dbg(DBG_BATMAN, bat_priv, - "Creating new last-hop neighbor of originator\n"); - - neigh_node = kzalloc(sizeof(struct neigh_node), GFP_ATOMIC); - if (!neigh_node) - return NULL; - - INIT_LIST_HEAD(&neigh_node->list); - - memcpy(neigh_node->addr, neigh, ETH_ALEN); - neigh_node->orig_node = orig_neigh_node; - neigh_node->if_incoming = if_incoming; - - list_add_tail(&neigh_node->list, &orig_node->neigh_list); - return neigh_node; -} - -static void free_orig_node(void *data, void *arg) -{ - struct list_head *list_pos, *list_pos_tmp; - struct neigh_node *neigh_node; - struct orig_node *orig_node = (struct orig_node *)data; - struct bat_priv *bat_priv = (struct bat_priv *)arg; - - /* for all neighbors towards this originator ... */ - list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) { - neigh_node = list_entry(list_pos, struct neigh_node, list); - - list_del(list_pos); - kfree(neigh_node); - } - - frag_list_free(&orig_node->frag_list); - hna_global_del_orig(bat_priv, orig_node, "originator timed out"); - - kfree(orig_node->bcast_own); - kfree(orig_node->bcast_own_sum); - kfree(orig_node); -} - -void originator_free(struct bat_priv *bat_priv) -{ - unsigned long flags; - - if (!bat_priv->orig_hash) - return; - - cancel_delayed_work_sync(&bat_priv->orig_work); - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - hash_delete(bat_priv->orig_hash, free_orig_node, bat_priv); - bat_priv->orig_hash = NULL; - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); -} - -/* this function finds or creates an originator entry for the given - * address if it does not exits */ -struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr) -{ - struct orig_node *orig_node; - struct hashtable_t *swaphash; - int size; - - orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, addr)); - - if (orig_node) - return orig_node; - - bat_dbg(DBG_BATMAN, bat_priv, - "Creating new originator: %pM\n", addr); - - orig_node = kzalloc(sizeof(struct orig_node), GFP_ATOMIC); - if (!orig_node) - return NULL; - - INIT_LIST_HEAD(&orig_node->neigh_list); - - memcpy(orig_node->orig, addr, ETH_ALEN); - orig_node->router = NULL; - orig_node->hna_buff = NULL; - orig_node->bcast_seqno_reset = jiffies - 1 - - msecs_to_jiffies(RESET_PROTECTION_MS); - orig_node->batman_seqno_reset = jiffies - 1 - - msecs_to_jiffies(RESET_PROTECTION_MS); - - size = bat_priv->num_ifaces * sizeof(TYPE_OF_WORD) * NUM_WORDS; - - orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); - if (!orig_node->bcast_own) - goto free_orig_node; - - size = bat_priv->num_ifaces * sizeof(uint8_t); - orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); - - INIT_LIST_HEAD(&orig_node->frag_list); - orig_node->last_frag_packet = 0; - - if (!orig_node->bcast_own_sum) - goto free_bcast_own; - - if (hash_add(bat_priv->orig_hash, orig_node) < 0) - goto free_bcast_own_sum; - - if (bat_priv->orig_hash->elements * 4 > bat_priv->orig_hash->size) { - swaphash = hash_resize(bat_priv->orig_hash, - bat_priv->orig_hash->size * 2); - - if (!swaphash) - bat_dbg(DBG_BATMAN, bat_priv, - "Couldn't resize orig hash table\n"); - else - bat_priv->orig_hash = swaphash; - } - - return orig_node; -free_bcast_own_sum: - kfree(orig_node->bcast_own_sum); -free_bcast_own: - kfree(orig_node->bcast_own); -free_orig_node: - kfree(orig_node); - return NULL; -} - -static bool purge_orig_neighbors(struct bat_priv *bat_priv, - struct orig_node *orig_node, - struct neigh_node **best_neigh_node) -{ - struct list_head *list_pos, *list_pos_tmp; - struct neigh_node *neigh_node; - bool neigh_purged = false; - - *best_neigh_node = NULL; - - /* for all neighbors towards this originator ... */ - list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) { - neigh_node = list_entry(list_pos, struct neigh_node, list); - - if ((time_after(jiffies, - neigh_node->last_valid + PURGE_TIMEOUT * HZ)) || - (neigh_node->if_incoming->if_status == IF_INACTIVE) || - (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { - - if (neigh_node->if_incoming->if_status == - IF_TO_BE_REMOVED) - bat_dbg(DBG_BATMAN, bat_priv, - "neighbor purge: originator %pM, " - "neighbor: %pM, iface: %s\n", - orig_node->orig, neigh_node->addr, - neigh_node->if_incoming->net_dev->name); - else - bat_dbg(DBG_BATMAN, bat_priv, - "neighbor timeout: originator %pM, " - "neighbor: %pM, last_valid: %lu\n", - orig_node->orig, neigh_node->addr, - (neigh_node->last_valid / HZ)); - - neigh_purged = true; - list_del(list_pos); - kfree(neigh_node); - } else { - if ((*best_neigh_node == NULL) || - (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) - *best_neigh_node = neigh_node; - } - } - return neigh_purged; -} - -static bool purge_orig_node(struct bat_priv *bat_priv, - struct orig_node *orig_node) -{ - struct neigh_node *best_neigh_node; - - if (time_after(jiffies, - orig_node->last_valid + 2 * PURGE_TIMEOUT * HZ)) { - - bat_dbg(DBG_BATMAN, bat_priv, - "Originator timeout: originator %pM, last_valid %lu\n", - orig_node->orig, (orig_node->last_valid / HZ)); - return true; - } else { - if (purge_orig_neighbors(bat_priv, orig_node, - &best_neigh_node)) { - update_routes(bat_priv, orig_node, - best_neigh_node, - orig_node->hna_buff, - orig_node->hna_buff_len); - /* update bonding candidates, we could have lost - * some candidates. */ - update_bonding_candidates(bat_priv, orig_node); - } - } - - return false; -} - -static void _purge_orig(struct bat_priv *bat_priv) -{ - HASHIT(hashit); - struct orig_node *orig_node; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - /* for all origins... */ - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - orig_node = hashit.bucket->data; - - if (purge_orig_node(bat_priv, orig_node)) { - hash_remove_bucket(bat_priv->orig_hash, &hashit); - free_orig_node(orig_node, bat_priv); - } - - if (time_after(jiffies, (orig_node->last_frag_packet + - msecs_to_jiffies(FRAG_TIMEOUT)))) - frag_list_free(&orig_node->frag_list); - } - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - -} - -static void purge_orig(struct work_struct *work) -{ - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct bat_priv *bat_priv = - container_of(delayed_work, struct bat_priv, orig_work); - - _purge_orig(bat_priv); - start_purge_timer(bat_priv); -} - -void purge_orig_ref(struct bat_priv *bat_priv) -{ - _purge_orig(bat_priv); -} - -int orig_seq_print_text(struct seq_file *seq, void *offset) -{ - HASHIT(hashit); - struct net_device *net_dev = (struct net_device *)seq->private; - struct bat_priv *bat_priv = netdev_priv(net_dev); - struct orig_node *orig_node; - struct neigh_node *neigh_node; - int batman_count = 0; - int last_seen_secs; - int last_seen_msecs; - unsigned long flags; - - if ((!bat_priv->primary_if) || - (bat_priv->primary_if->if_status != IF_ACTIVE)) { - if (!bat_priv->primary_if) - return seq_printf(seq, "BATMAN mesh %s disabled - " - "please specify interfaces to enable it\n", - net_dev->name); - - return seq_printf(seq, "BATMAN mesh %s " - "disabled - primary interface not active\n", - net_dev->name); - } - - seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n", - SOURCE_VERSION, REVISION_VERSION_STR, - bat_priv->primary_if->net_dev->name, - bat_priv->primary_if->net_dev->dev_addr, net_dev->name); - seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", - "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", - "outgoingIF", "Potential nexthops"); - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - - orig_node = hashit.bucket->data; - - if (!orig_node->router) - continue; - - if (orig_node->router->tq_avg == 0) - continue; - - last_seen_secs = jiffies_to_msecs(jiffies - - orig_node->last_valid) / 1000; - last_seen_msecs = jiffies_to_msecs(jiffies - - orig_node->last_valid) % 1000; - - seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", - orig_node->orig, last_seen_secs, last_seen_msecs, - orig_node->router->tq_avg, orig_node->router->addr, - orig_node->router->if_incoming->net_dev->name); - - list_for_each_entry(neigh_node, &orig_node->neigh_list, list) { - seq_printf(seq, " %pM (%3i)", neigh_node->addr, - neigh_node->tq_avg); - } - - seq_printf(seq, "\n"); - batman_count++; - } - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - if ((batman_count == 0)) - seq_printf(seq, "No batman nodes in range ...\n"); - - return 0; -} - -static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) -{ - void *data_ptr; - - data_ptr = kmalloc(max_if_num * sizeof(TYPE_OF_WORD) * NUM_WORDS, - GFP_ATOMIC); - if (!data_ptr) { - pr_err("Can't resize orig: out of memory\n"); - return -1; - } - - memcpy(data_ptr, orig_node->bcast_own, - (max_if_num - 1) * sizeof(TYPE_OF_WORD) * NUM_WORDS); - kfree(orig_node->bcast_own); - orig_node->bcast_own = data_ptr; - - data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); - if (!data_ptr) { - pr_err("Can't resize orig: out of memory\n"); - return -1; - } - - memcpy(data_ptr, orig_node->bcast_own_sum, - (max_if_num - 1) * sizeof(uint8_t)); - kfree(orig_node->bcast_own_sum); - orig_node->bcast_own_sum = data_ptr; - - return 0; -} - -int orig_hash_add_if(struct batman_if *batman_if, int max_if_num) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - struct orig_node *orig_node; - unsigned long flags; - HASHIT(hashit); - - /* resize all orig nodes because orig_node->bcast_own(_sum) depend on - * if_num */ - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - orig_node = hashit.bucket->data; - - if (orig_node_add_if(orig_node, max_if_num) == -1) - goto err; - } - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return 0; - -err: - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return -ENOMEM; -} - -static int orig_node_del_if(struct orig_node *orig_node, - int max_if_num, int del_if_num) -{ - void *data_ptr = NULL; - int chunk_size; - - /* last interface was removed */ - if (max_if_num == 0) - goto free_bcast_own; - - chunk_size = sizeof(TYPE_OF_WORD) * NUM_WORDS; - data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); - if (!data_ptr) { - pr_err("Can't resize orig: out of memory\n"); - return -1; - } - - /* copy first part */ - memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); - - /* copy second part */ - memcpy(data_ptr + del_if_num * chunk_size, - orig_node->bcast_own + ((del_if_num + 1) * chunk_size), - (max_if_num - del_if_num) * chunk_size); - -free_bcast_own: - kfree(orig_node->bcast_own); - orig_node->bcast_own = data_ptr; - - if (max_if_num == 0) - goto free_own_sum; - - data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); - if (!data_ptr) { - pr_err("Can't resize orig: out of memory\n"); - return -1; - } - - memcpy(data_ptr, orig_node->bcast_own_sum, - del_if_num * sizeof(uint8_t)); - - memcpy(data_ptr + del_if_num * sizeof(uint8_t), - orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), - (max_if_num - del_if_num) * sizeof(uint8_t)); - -free_own_sum: - kfree(orig_node->bcast_own_sum); - orig_node->bcast_own_sum = data_ptr; - - return 0; -} - -int orig_hash_del_if(struct batman_if *batman_if, int max_if_num) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - struct batman_if *batman_if_tmp; - struct orig_node *orig_node; - unsigned long flags; - HASHIT(hashit); - int ret; - - /* resize all orig nodes because orig_node->bcast_own(_sum) depend on - * if_num */ - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - orig_node = hashit.bucket->data; - - ret = orig_node_del_if(orig_node, max_if_num, - batman_if->if_num); - - if (ret == -1) - goto err; - } - - /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ - rcu_read_lock(); - list_for_each_entry_rcu(batman_if_tmp, &if_list, list) { - if (batman_if_tmp->if_status == IF_NOT_IN_USE) - continue; - - if (batman_if == batman_if_tmp) - continue; - - if (batman_if->soft_iface != batman_if_tmp->soft_iface) - continue; - - if (batman_if_tmp->if_num > batman_if->if_num) - batman_if_tmp->if_num--; - } - rcu_read_unlock(); - - batman_if->if_num = -1; - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return 0; - -err: - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return -ENOMEM; -} diff --git a/drivers/staging/batman-adv/originator.h b/drivers/staging/batman-adv/originator.h deleted file mode 100644 index a97c4004776a..000000000000 --- a/drivers/staging/batman-adv/originator.h +++ /dev/null @@ -1,36 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_ -#define _NET_BATMAN_ADV_ORIGINATOR_H_ - -int originator_init(struct bat_priv *bat_priv); -void originator_free(struct bat_priv *bat_priv); -void purge_orig_ref(struct bat_priv *bat_priv); -struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr); -struct neigh_node * -create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, - uint8_t *neigh, struct batman_if *if_incoming); -int orig_seq_print_text(struct seq_file *seq, void *offset); -int orig_hash_add_if(struct batman_if *batman_if, int max_if_num); -int orig_hash_del_if(struct batman_if *batman_if, int max_if_num); - -#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */ diff --git a/drivers/staging/batman-adv/packet.h b/drivers/staging/batman-adv/packet.h deleted file mode 100644 index 2693383889a4..000000000000 --- a/drivers/staging/batman-adv/packet.h +++ /dev/null @@ -1,134 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_PACKET_H_ -#define _NET_BATMAN_ADV_PACKET_H_ - -#define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */ - -#define BAT_PACKET 0x01 -#define BAT_ICMP 0x02 -#define BAT_UNICAST 0x03 -#define BAT_BCAST 0x04 -#define BAT_VIS 0x05 -#define BAT_UNICAST_FRAG 0x06 - -/* this file is included by batctl which needs these defines */ -#define COMPAT_VERSION 13 -#define DIRECTLINK 0x40 -#define VIS_SERVER 0x20 -#define PRIMARIES_FIRST_HOP 0x10 - -/* ICMP message types */ -#define ECHO_REPLY 0 -#define DESTINATION_UNREACHABLE 3 -#define ECHO_REQUEST 8 -#define TTL_EXCEEDED 11 -#define PARAMETER_PROBLEM 12 - -/* vis defines */ -#define VIS_TYPE_SERVER_SYNC 0 -#define VIS_TYPE_CLIENT_UPDATE 1 - -/* fragmentation defines */ -#define UNI_FRAG_HEAD 0x01 - -struct batman_packet { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */ - uint8_t tq; - uint32_t seqno; - uint8_t orig[6]; - uint8_t prev_sender[6]; - uint8_t ttl; - uint8_t num_hna; -} __attribute__((packed)); - -#define BAT_PACKET_LEN sizeof(struct batman_packet) - -struct icmp_packet { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t msg_type; /* see ICMP message types above */ - uint8_t ttl; - uint8_t dst[6]; - uint8_t orig[6]; - uint16_t seqno; - uint8_t uid; -} __attribute__((packed)); - -#define BAT_RR_LEN 16 - -/* icmp_packet_rr must start with all fields from imcp_packet - * as this is assumed by code that handles ICMP packets */ -struct icmp_packet_rr { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t msg_type; /* see ICMP message types above */ - uint8_t ttl; - uint8_t dst[6]; - uint8_t orig[6]; - uint16_t seqno; - uint8_t uid; - uint8_t rr_cur; - uint8_t rr[BAT_RR_LEN][ETH_ALEN]; -} __attribute__((packed)); - -struct unicast_packet { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t dest[6]; - uint8_t ttl; -} __attribute__((packed)); - -struct unicast_frag_packet { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t dest[6]; - uint8_t ttl; - uint8_t flags; - uint8_t orig[6]; - uint16_t seqno; -} __attribute__((packed)); - -struct bcast_packet { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t orig[6]; - uint8_t ttl; - uint32_t seqno; -} __attribute__((packed)); - -struct vis_packet { - uint8_t packet_type; - uint8_t version; /* batman version field */ - uint8_t vis_type; /* which type of vis-participant sent this? */ - uint8_t entries; /* number of entries behind this struct */ - uint32_t seqno; /* sequence number */ - uint8_t ttl; /* TTL */ - uint8_t vis_orig[6]; /* originator that informs about its - * neighbors */ - uint8_t target_orig[6]; /* who should receive this packet */ - uint8_t sender_orig[6]; /* who sent or rebroadcasted this packet */ -} __attribute__((packed)); - -#endif /* _NET_BATMAN_ADV_PACKET_H_ */ diff --git a/drivers/staging/batman-adv/ring_buffer.c b/drivers/staging/batman-adv/ring_buffer.c deleted file mode 100644 index defd37c9be1f..000000000000 --- a/drivers/staging/batman-adv/ring_buffer.c +++ /dev/null @@ -1,52 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "ring_buffer.h" - -void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value) -{ - lq_recv[*lq_index] = value; - *lq_index = (*lq_index + 1) % TQ_GLOBAL_WINDOW_SIZE; -} - -uint8_t ring_buffer_avg(uint8_t lq_recv[]) -{ - uint8_t *ptr; - uint16_t count = 0, i = 0, sum = 0; - - ptr = lq_recv; - - while (i < TQ_GLOBAL_WINDOW_SIZE) { - if (*ptr != 0) { - count++; - sum += *ptr; - } - - i++; - ptr++; - } - - if (count == 0) - return 0; - - return (uint8_t)(sum / count); -} diff --git a/drivers/staging/batman-adv/ring_buffer.h b/drivers/staging/batman-adv/ring_buffer.h deleted file mode 100644 index 6b0cb9aaeba5..000000000000 --- a/drivers/staging/batman-adv/ring_buffer.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_RING_BUFFER_H_ -#define _NET_BATMAN_ADV_RING_BUFFER_H_ - -void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value); -uint8_t ring_buffer_avg(uint8_t lq_recv[]); - -#endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */ diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c deleted file mode 100644 index 657b69e6b957..000000000000 --- a/drivers/staging/batman-adv/routing.c +++ /dev/null @@ -1,1389 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "routing.h" -#include "send.h" -#include "hash.h" -#include "soft-interface.h" -#include "hard-interface.h" -#include "icmp_socket.h" -#include "translation-table.h" -#include "originator.h" -#include "types.h" -#include "ring_buffer.h" -#include "vis.h" -#include "aggregation.h" -#include "unicast.h" - -void slide_own_bcast_window(struct batman_if *batman_if) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - HASHIT(hashit); - struct orig_node *orig_node; - TYPE_OF_WORD *word; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - orig_node = hashit.bucket->data; - word = &(orig_node->bcast_own[batman_if->if_num * NUM_WORDS]); - - bit_get_packet(bat_priv, word, 1, 0); - orig_node->bcast_own_sum[batman_if->if_num] = - bit_packet_count(word); - } - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); -} - -static void update_HNA(struct bat_priv *bat_priv, struct orig_node *orig_node, - unsigned char *hna_buff, int hna_buff_len) -{ - if ((hna_buff_len != orig_node->hna_buff_len) || - ((hna_buff_len > 0) && - (orig_node->hna_buff_len > 0) && - (memcmp(orig_node->hna_buff, hna_buff, hna_buff_len) != 0))) { - - if (orig_node->hna_buff_len > 0) - hna_global_del_orig(bat_priv, orig_node, - "originator changed hna"); - - if ((hna_buff_len > 0) && (hna_buff != NULL)) - hna_global_add_orig(bat_priv, orig_node, - hna_buff, hna_buff_len); - } -} - -static void update_route(struct bat_priv *bat_priv, - struct orig_node *orig_node, - struct neigh_node *neigh_node, - unsigned char *hna_buff, int hna_buff_len) -{ - /* route deleted */ - if ((orig_node->router != NULL) && (neigh_node == NULL)) { - - bat_dbg(DBG_ROUTES, bat_priv, "Deleting route towards: %pM\n", - orig_node->orig); - hna_global_del_orig(bat_priv, orig_node, - "originator timed out"); - - /* route added */ - } else if ((orig_node->router == NULL) && (neigh_node != NULL)) { - - bat_dbg(DBG_ROUTES, bat_priv, - "Adding route towards: %pM (via %pM)\n", - orig_node->orig, neigh_node->addr); - hna_global_add_orig(bat_priv, orig_node, - hna_buff, hna_buff_len); - - /* route changed */ - } else { - bat_dbg(DBG_ROUTES, bat_priv, - "Changing route towards: %pM " - "(now via %pM - was via %pM)\n", - orig_node->orig, neigh_node->addr, - orig_node->router->addr); - } - - orig_node->router = neigh_node; -} - - -void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node, - struct neigh_node *neigh_node, unsigned char *hna_buff, - int hna_buff_len) -{ - - if (orig_node == NULL) - return; - - if (orig_node->router != neigh_node) - update_route(bat_priv, orig_node, neigh_node, - hna_buff, hna_buff_len); - /* may be just HNA changed */ - else - update_HNA(bat_priv, orig_node, hna_buff, hna_buff_len); -} - -static int is_bidirectional_neigh(struct orig_node *orig_node, - struct orig_node *orig_neigh_node, - struct batman_packet *batman_packet, - struct batman_if *if_incoming) -{ - struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; - unsigned char total_count; - - if (orig_node == orig_neigh_node) { - list_for_each_entry(tmp_neigh_node, - &orig_node->neigh_list, - list) { - - if (compare_orig(tmp_neigh_node->addr, - orig_neigh_node->orig) && - (tmp_neigh_node->if_incoming == if_incoming)) - neigh_node = tmp_neigh_node; - } - - if (!neigh_node) - neigh_node = create_neighbor(orig_node, - orig_neigh_node, - orig_neigh_node->orig, - if_incoming); - /* create_neighbor failed, return 0 */ - if (!neigh_node) - return 0; - - neigh_node->last_valid = jiffies; - } else { - /* find packet count of corresponding one hop neighbor */ - list_for_each_entry(tmp_neigh_node, - &orig_neigh_node->neigh_list, list) { - - if (compare_orig(tmp_neigh_node->addr, - orig_neigh_node->orig) && - (tmp_neigh_node->if_incoming == if_incoming)) - neigh_node = tmp_neigh_node; - } - - if (!neigh_node) - neigh_node = create_neighbor(orig_neigh_node, - orig_neigh_node, - orig_neigh_node->orig, - if_incoming); - /* create_neighbor failed, return 0 */ - if (!neigh_node) - return 0; - } - - orig_node->last_valid = jiffies; - - /* pay attention to not get a value bigger than 100 % */ - total_count = (orig_neigh_node->bcast_own_sum[if_incoming->if_num] > - neigh_node->real_packet_count ? - neigh_node->real_packet_count : - orig_neigh_node->bcast_own_sum[if_incoming->if_num]); - - /* if we have too few packets (too less data) we set tq_own to zero */ - /* if we receive too few packets it is not considered bidirectional */ - if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) || - (neigh_node->real_packet_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM)) - orig_neigh_node->tq_own = 0; - else - /* neigh_node->real_packet_count is never zero as we - * only purge old information when getting new - * information */ - orig_neigh_node->tq_own = (TQ_MAX_VALUE * total_count) / - neigh_node->real_packet_count; - - /* - * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does - * affect the nearly-symmetric links only a little, but - * punishes asymmetric links more. This will give a value - * between 0 and TQ_MAX_VALUE - */ - orig_neigh_node->tq_asym_penalty = - TQ_MAX_VALUE - - (TQ_MAX_VALUE * - (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) * - (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) * - (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count)) / - (TQ_LOCAL_WINDOW_SIZE * - TQ_LOCAL_WINDOW_SIZE * - TQ_LOCAL_WINDOW_SIZE); - - batman_packet->tq = ((batman_packet->tq * - orig_neigh_node->tq_own * - orig_neigh_node->tq_asym_penalty) / - (TQ_MAX_VALUE * TQ_MAX_VALUE)); - - bat_dbg(DBG_BATMAN, bat_priv, - "bidirectional: " - "orig = %-15pM neigh = %-15pM => own_bcast = %2i, " - "real recv = %2i, local tq: %3i, asym_penalty: %3i, " - "total tq: %3i\n", - orig_node->orig, orig_neigh_node->orig, total_count, - neigh_node->real_packet_count, orig_neigh_node->tq_own, - orig_neigh_node->tq_asym_penalty, batman_packet->tq); - - /* if link has the minimum required transmission quality - * consider it bidirectional */ - if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT) - return 1; - - return 0; -} - -static void update_orig(struct bat_priv *bat_priv, - struct orig_node *orig_node, - struct ethhdr *ethhdr, - struct batman_packet *batman_packet, - struct batman_if *if_incoming, - unsigned char *hna_buff, int hna_buff_len, - char is_duplicate) -{ - struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; - int tmp_hna_buff_len; - - bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): " - "Searching and updating originator entry of received packet\n"); - - list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { - if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && - (tmp_neigh_node->if_incoming == if_incoming)) { - neigh_node = tmp_neigh_node; - continue; - } - - if (is_duplicate) - continue; - - ring_buffer_set(tmp_neigh_node->tq_recv, - &tmp_neigh_node->tq_index, 0); - tmp_neigh_node->tq_avg = - ring_buffer_avg(tmp_neigh_node->tq_recv); - } - - if (!neigh_node) { - struct orig_node *orig_tmp; - - orig_tmp = get_orig_node(bat_priv, ethhdr->h_source); - if (!orig_tmp) - return; - - neigh_node = create_neighbor(orig_node, orig_tmp, - ethhdr->h_source, if_incoming); - if (!neigh_node) - return; - } else - bat_dbg(DBG_BATMAN, bat_priv, - "Updating existing last-hop neighbor of originator\n"); - - orig_node->flags = batman_packet->flags; - neigh_node->last_valid = jiffies; - - ring_buffer_set(neigh_node->tq_recv, - &neigh_node->tq_index, - batman_packet->tq); - neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv); - - if (!is_duplicate) { - orig_node->last_ttl = batman_packet->ttl; - neigh_node->last_ttl = batman_packet->ttl; - } - - tmp_hna_buff_len = (hna_buff_len > batman_packet->num_hna * ETH_ALEN ? - batman_packet->num_hna * ETH_ALEN : hna_buff_len); - - /* if this neighbor already is our next hop there is nothing - * to change */ - if (orig_node->router == neigh_node) - goto update_hna; - - /* if this neighbor does not offer a better TQ we won't consider it */ - if ((orig_node->router) && - (orig_node->router->tq_avg > neigh_node->tq_avg)) - goto update_hna; - - /* if the TQ is the same and the link not more symetric we - * won't consider it either */ - if ((orig_node->router) && - ((neigh_node->tq_avg == orig_node->router->tq_avg) && - (orig_node->router->orig_node->bcast_own_sum[if_incoming->if_num] - >= neigh_node->orig_node->bcast_own_sum[if_incoming->if_num]))) - goto update_hna; - - update_routes(bat_priv, orig_node, neigh_node, - hna_buff, tmp_hna_buff_len); - return; - -update_hna: - update_routes(bat_priv, orig_node, orig_node->router, - hna_buff, tmp_hna_buff_len); -} - -/* checks whether the host restarted and is in the protection time. - * returns: - * 0 if the packet is to be accepted - * 1 if the packet is to be ignored. - */ -static int window_protected(struct bat_priv *bat_priv, - int32_t seq_num_diff, - unsigned long *last_reset) -{ - if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE) - || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) { - if (time_after(jiffies, *last_reset + - msecs_to_jiffies(RESET_PROTECTION_MS))) { - - *last_reset = jiffies; - bat_dbg(DBG_BATMAN, bat_priv, - "old packet received, start protection\n"); - - return 0; - } else - return 1; - } - return 0; -} - -/* processes a batman packet for all interfaces, adjusts the sequence number and - * finds out whether it is a duplicate. - * returns: - * 1 the packet is a duplicate - * 0 the packet has not yet been received - * -1 the packet is old and has been received while the seqno window - * was protected. Caller should drop it. - */ -static char count_real_packets(struct ethhdr *ethhdr, - struct batman_packet *batman_packet, - struct batman_if *if_incoming) -{ - struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct orig_node *orig_node; - struct neigh_node *tmp_neigh_node; - char is_duplicate = 0; - int32_t seq_diff; - int need_update = 0; - int set_mark; - - orig_node = get_orig_node(bat_priv, batman_packet->orig); - if (orig_node == NULL) - return 0; - - seq_diff = batman_packet->seqno - orig_node->last_real_seqno; - - /* signalize caller that the packet is to be dropped. */ - if (window_protected(bat_priv, seq_diff, - &orig_node->batman_seqno_reset)) - return -1; - - list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { - - is_duplicate |= get_bit_status(tmp_neigh_node->real_bits, - orig_node->last_real_seqno, - batman_packet->seqno); - - if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && - (tmp_neigh_node->if_incoming == if_incoming)) - set_mark = 1; - else - set_mark = 0; - - /* if the window moved, set the update flag. */ - need_update |= bit_get_packet(bat_priv, - tmp_neigh_node->real_bits, - seq_diff, set_mark); - - tmp_neigh_node->real_packet_count = - bit_packet_count(tmp_neigh_node->real_bits); - } - - if (need_update) { - bat_dbg(DBG_BATMAN, bat_priv, - "updating last_seqno: old %d, new %d\n", - orig_node->last_real_seqno, batman_packet->seqno); - orig_node->last_real_seqno = batman_packet->seqno; - } - - return is_duplicate; -} - -/* copy primary address for bonding */ -static void mark_bonding_address(struct bat_priv *bat_priv, - struct orig_node *orig_node, - struct orig_node *orig_neigh_node, - struct batman_packet *batman_packet) - -{ - if (batman_packet->flags & PRIMARIES_FIRST_HOP) - memcpy(orig_neigh_node->primary_addr, - orig_node->orig, ETH_ALEN); - - return; -} - -/* mark possible bond.candidates in the neighbor list */ -void update_bonding_candidates(struct bat_priv *bat_priv, - struct orig_node *orig_node) -{ - int candidates; - int interference_candidate; - int best_tq; - struct neigh_node *tmp_neigh_node, *tmp_neigh_node2; - struct neigh_node *first_candidate, *last_candidate; - - /* update the candidates for this originator */ - if (!orig_node->router) { - orig_node->bond.candidates = 0; - return; - } - - best_tq = orig_node->router->tq_avg; - - /* update bond.candidates */ - - candidates = 0; - - /* mark other nodes which also received "PRIMARIES FIRST HOP" packets - * as "bonding partner" */ - - /* first, zero the list */ - list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { - tmp_neigh_node->next_bond_candidate = NULL; - } - - first_candidate = NULL; - last_candidate = NULL; - list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { - - /* only consider if it has the same primary address ... */ - if (memcmp(orig_node->orig, - tmp_neigh_node->orig_node->primary_addr, - ETH_ALEN) != 0) - continue; - - /* ... and is good enough to be considered */ - if (tmp_neigh_node->tq_avg < best_tq - BONDING_TQ_THRESHOLD) - continue; - - /* check if we have another candidate with the same - * mac address or interface. If we do, we won't - * select this candidate because of possible interference. */ - - interference_candidate = 0; - list_for_each_entry(tmp_neigh_node2, - &orig_node->neigh_list, list) { - - if (tmp_neigh_node2 == tmp_neigh_node) - continue; - - /* we only care if the other candidate is even - * considered as candidate. */ - if (tmp_neigh_node2->next_bond_candidate == NULL) - continue; - - - if ((tmp_neigh_node->if_incoming == - tmp_neigh_node2->if_incoming) - || (memcmp(tmp_neigh_node->addr, - tmp_neigh_node2->addr, ETH_ALEN) == 0)) { - - interference_candidate = 1; - break; - } - } - /* don't care further if it is an interference candidate */ - if (interference_candidate) - continue; - - if (first_candidate == NULL) { - first_candidate = tmp_neigh_node; - tmp_neigh_node->next_bond_candidate = first_candidate; - } else - tmp_neigh_node->next_bond_candidate = last_candidate; - - last_candidate = tmp_neigh_node; - - candidates++; - } - - if (candidates > 0) { - first_candidate->next_bond_candidate = last_candidate; - orig_node->bond.selected = first_candidate; - } - - orig_node->bond.candidates = candidates; -} - -void receive_bat_packet(struct ethhdr *ethhdr, - struct batman_packet *batman_packet, - unsigned char *hna_buff, int hna_buff_len, - struct batman_if *if_incoming) -{ - struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct batman_if *batman_if; - struct orig_node *orig_neigh_node, *orig_node; - char has_directlink_flag; - char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0; - char is_broadcast = 0, is_bidirectional, is_single_hop_neigh; - char is_duplicate; - uint32_t if_incoming_seqno; - - /* Silently drop when the batman packet is actually not a - * correct packet. - * - * This might happen if a packet is padded (e.g. Ethernet has a - * minimum frame length of 64 byte) and the aggregation interprets - * it as an additional length. - * - * TODO: A more sane solution would be to have a bit in the - * batman_packet to detect whether the packet is the last - * packet in an aggregation. Here we expect that the padding - * is always zero (or not 0x01) - */ - if (batman_packet->packet_type != BAT_PACKET) - return; - - /* could be changed by schedule_own_packet() */ - if_incoming_seqno = atomic_read(&if_incoming->seqno); - - has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0); - - is_single_hop_neigh = (compare_orig(ethhdr->h_source, - batman_packet->orig) ? 1 : 0); - - bat_dbg(DBG_BATMAN, bat_priv, - "Received BATMAN packet via NB: %pM, IF: %s [%pM] " - "(from OG: %pM, via prev OG: %pM, seqno %d, tq %d, " - "TTL %d, V %d, IDF %d)\n", - ethhdr->h_source, if_incoming->net_dev->name, - if_incoming->net_dev->dev_addr, batman_packet->orig, - batman_packet->prev_sender, batman_packet->seqno, - batman_packet->tq, batman_packet->ttl, batman_packet->version, - has_directlink_flag); - - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if (batman_if->if_status != IF_ACTIVE) - continue; - - if (batman_if->soft_iface != if_incoming->soft_iface) - continue; - - if (compare_orig(ethhdr->h_source, - batman_if->net_dev->dev_addr)) - is_my_addr = 1; - - if (compare_orig(batman_packet->orig, - batman_if->net_dev->dev_addr)) - is_my_orig = 1; - - if (compare_orig(batman_packet->prev_sender, - batman_if->net_dev->dev_addr)) - is_my_oldorig = 1; - - if (compare_orig(ethhdr->h_source, broadcast_addr)) - is_broadcast = 1; - } - rcu_read_unlock(); - - if (batman_packet->version != COMPAT_VERSION) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: incompatible batman version (%i)\n", - batman_packet->version); - return; - } - - if (is_my_addr) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: received my own broadcast (sender: %pM" - ")\n", - ethhdr->h_source); - return; - } - - if (is_broadcast) { - bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: " - "ignoring all packets with broadcast source addr (sender: %pM" - ")\n", ethhdr->h_source); - return; - } - - if (is_my_orig) { - TYPE_OF_WORD *word; - int offset; - - orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source); - - if (!orig_neigh_node) - return; - - /* neighbor has to indicate direct link and it has to - * come via the corresponding interface */ - /* if received seqno equals last send seqno save new - * seqno for bidirectional check */ - if (has_directlink_flag && - compare_orig(if_incoming->net_dev->dev_addr, - batman_packet->orig) && - (batman_packet->seqno - if_incoming_seqno + 2 == 0)) { - offset = if_incoming->if_num * NUM_WORDS; - word = &(orig_neigh_node->bcast_own[offset]); - bit_mark(word, 0); - orig_neigh_node->bcast_own_sum[if_incoming->if_num] = - bit_packet_count(word); - } - - bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: " - "originator packet from myself (via neighbor)\n"); - return; - } - - if (is_my_oldorig) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: ignoring all rebroadcast echos (sender: " - "%pM)\n", ethhdr->h_source); - return; - } - - orig_node = get_orig_node(bat_priv, batman_packet->orig); - if (orig_node == NULL) - return; - - is_duplicate = count_real_packets(ethhdr, batman_packet, if_incoming); - - if (is_duplicate == -1) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: packet within seqno protection time " - "(sender: %pM)\n", ethhdr->h_source); - return; - } - - if (batman_packet->tq == 0) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: originator packet with tq equal 0\n"); - return; - } - - /* avoid temporary routing loops */ - if ((orig_node->router) && - (orig_node->router->orig_node->router) && - (compare_orig(orig_node->router->addr, - batman_packet->prev_sender)) && - !(compare_orig(batman_packet->orig, batman_packet->prev_sender)) && - (compare_orig(orig_node->router->addr, - orig_node->router->orig_node->router->addr))) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: ignoring all rebroadcast packets that " - "may make me loop (sender: %pM)\n", ethhdr->h_source); - return; - } - - /* if sender is a direct neighbor the sender mac equals - * originator mac */ - orig_neigh_node = (is_single_hop_neigh ? - orig_node : - get_orig_node(bat_priv, ethhdr->h_source)); - if (orig_neigh_node == NULL) - return; - - /* drop packet if sender is not a direct neighbor and if we - * don't route towards it */ - if (!is_single_hop_neigh && - (orig_neigh_node->router == NULL)) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: OGM via unknown neighbor!\n"); - return; - } - - is_bidirectional = is_bidirectional_neigh(orig_node, orig_neigh_node, - batman_packet, if_incoming); - - /* update ranking if it is not a duplicate or has the same - * seqno and similar ttl as the non-duplicate */ - if (is_bidirectional && - (!is_duplicate || - ((orig_node->last_real_seqno == batman_packet->seqno) && - (orig_node->last_ttl - 3 <= batman_packet->ttl)))) - update_orig(bat_priv, orig_node, ethhdr, batman_packet, - if_incoming, hna_buff, hna_buff_len, is_duplicate); - - mark_bonding_address(bat_priv, orig_node, - orig_neigh_node, batman_packet); - update_bonding_candidates(bat_priv, orig_node); - - /* is single hop (direct) neighbor */ - if (is_single_hop_neigh) { - - /* mark direct link on incoming interface */ - schedule_forward_packet(orig_node, ethhdr, batman_packet, - 1, hna_buff_len, if_incoming); - - bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: " - "rebroadcast neighbor packet with direct link flag\n"); - return; - } - - /* multihop originator */ - if (!is_bidirectional) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: not received via bidirectional link\n"); - return; - } - - if (is_duplicate) { - bat_dbg(DBG_BATMAN, bat_priv, - "Drop packet: duplicate packet received\n"); - return; - } - - bat_dbg(DBG_BATMAN, bat_priv, - "Forwarding packet: rebroadcast originator packet\n"); - schedule_forward_packet(orig_node, ethhdr, batman_packet, - 0, hna_buff_len, if_incoming); -} - -int recv_bat_packet(struct sk_buff *skb, struct batman_if *batman_if) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - struct ethhdr *ethhdr; - unsigned long flags; - - /* drop packet if it has not necessary minimum size */ - if (unlikely(!pskb_may_pull(skb, sizeof(struct batman_packet)))) - return NET_RX_DROP; - - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* packet with broadcast indication but unicast recipient */ - if (!is_bcast(ethhdr->h_dest)) - return NET_RX_DROP; - - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - return NET_RX_DROP; - - /* create a copy of the skb, if needed, to modify it. */ - if (skb_cow(skb, 0) < 0) - return NET_RX_DROP; - - /* keep skb linear */ - if (skb_linearize(skb) < 0) - return NET_RX_DROP; - - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - receive_aggr_bat_packet(ethhdr, - skb->data, - skb_headlen(skb), - batman_if); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - kfree_skb(skb); - return NET_RX_SUCCESS; -} - -static int recv_my_icmp_packet(struct bat_priv *bat_priv, - struct sk_buff *skb, size_t icmp_len) -{ - struct orig_node *orig_node; - struct icmp_packet_rr *icmp_packet; - struct ethhdr *ethhdr; - struct batman_if *batman_if; - int ret; - unsigned long flags; - uint8_t dstaddr[ETH_ALEN]; - - icmp_packet = (struct icmp_packet_rr *)skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* add data to device queue */ - if (icmp_packet->msg_type != ECHO_REQUEST) { - bat_socket_receive_packet(icmp_packet, icmp_len); - return NET_RX_DROP; - } - - if (!bat_priv->primary_if) - return NET_RX_DROP; - - /* answer echo request (ping) */ - /* get routing information */ - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, - icmp_packet->orig)); - ret = NET_RX_DROP; - - if ((orig_node != NULL) && - (orig_node->router != NULL)) { - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - /* create a copy of the skb, if needed, to modify it. */ - if (skb_cow(skb, sizeof(struct ethhdr)) < 0) - return NET_RX_DROP; - - icmp_packet = (struct icmp_packet_rr *)skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN); - memcpy(icmp_packet->orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - icmp_packet->msg_type = ECHO_REPLY; - icmp_packet->ttl = TTL; - - send_skb_packet(skb, batman_if, dstaddr); - ret = NET_RX_SUCCESS; - - } else - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - return ret; -} - -static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv, - struct sk_buff *skb, size_t icmp_len) -{ - struct orig_node *orig_node; - struct icmp_packet *icmp_packet; - struct ethhdr *ethhdr; - struct batman_if *batman_if; - int ret; - unsigned long flags; - uint8_t dstaddr[ETH_ALEN]; - - icmp_packet = (struct icmp_packet *)skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* send TTL exceeded if packet is an echo request (traceroute) */ - if (icmp_packet->msg_type != ECHO_REQUEST) { - pr_debug("Warning - can't forward icmp packet from %pM to " - "%pM: ttl exceeded\n", icmp_packet->orig, - icmp_packet->dst); - return NET_RX_DROP; - } - - if (!bat_priv->primary_if) - return NET_RX_DROP; - - /* get routing information */ - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, icmp_packet->orig)); - ret = NET_RX_DROP; - - if ((orig_node != NULL) && - (orig_node->router != NULL)) { - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - /* create a copy of the skb, if needed, to modify it. */ - if (skb_cow(skb, sizeof(struct ethhdr)) < 0) - return NET_RX_DROP; - - icmp_packet = (struct icmp_packet *) skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN); - memcpy(icmp_packet->orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - icmp_packet->msg_type = TTL_EXCEEDED; - icmp_packet->ttl = TTL; - - send_skb_packet(skb, batman_if, dstaddr); - ret = NET_RX_SUCCESS; - - } else - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - return ret; -} - - -int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) -{ - struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); - struct icmp_packet_rr *icmp_packet; - struct ethhdr *ethhdr; - struct orig_node *orig_node; - struct batman_if *batman_if; - int hdr_size = sizeof(struct icmp_packet); - int ret; - unsigned long flags; - uint8_t dstaddr[ETH_ALEN]; - - /** - * we truncate all incoming icmp packets if they don't match our size - */ - if (skb->len >= sizeof(struct icmp_packet_rr)) - hdr_size = sizeof(struct icmp_packet_rr); - - /* drop packet if it has not necessary minimum size */ - if (unlikely(!pskb_may_pull(skb, hdr_size))) - return NET_RX_DROP; - - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* packet with unicast indication but broadcast recipient */ - if (is_bcast(ethhdr->h_dest)) - return NET_RX_DROP; - - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - return NET_RX_DROP; - - /* not for me */ - if (!is_my_mac(ethhdr->h_dest)) - return NET_RX_DROP; - - icmp_packet = (struct icmp_packet_rr *)skb->data; - - /* add record route information if not full */ - if ((hdr_size == sizeof(struct icmp_packet_rr)) && - (icmp_packet->rr_cur < BAT_RR_LEN)) { - memcpy(&(icmp_packet->rr[icmp_packet->rr_cur]), - ethhdr->h_dest, ETH_ALEN); - icmp_packet->rr_cur++; - } - - /* packet for me */ - if (is_my_mac(icmp_packet->dst)) - return recv_my_icmp_packet(bat_priv, skb, hdr_size); - - /* TTL exceeded */ - if (icmp_packet->ttl < 2) - return recv_icmp_ttl_exceeded(bat_priv, skb, hdr_size); - - ret = NET_RX_DROP; - - /* get routing information */ - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, icmp_packet->dst)); - - if ((orig_node != NULL) && - (orig_node->router != NULL)) { - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - /* create a copy of the skb, if needed, to modify it. */ - if (skb_cow(skb, sizeof(struct ethhdr)) < 0) - return NET_RX_DROP; - - icmp_packet = (struct icmp_packet_rr *)skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* decrement ttl */ - icmp_packet->ttl--; - - /* route it */ - send_skb_packet(skb, batman_if, dstaddr); - ret = NET_RX_SUCCESS; - - } else - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - return ret; -} - -/* find a suitable router for this originator, and use - * bonding if possible. */ -struct neigh_node *find_router(struct bat_priv *bat_priv, - struct orig_node *orig_node, - struct batman_if *recv_if) -{ - struct orig_node *primary_orig_node; - struct orig_node *router_orig; - struct neigh_node *router, *first_candidate, *best_router; - static uint8_t zero_mac[ETH_ALEN] = {0, 0, 0, 0, 0, 0}; - int bonding_enabled; - - if (!orig_node) - return NULL; - - if (!orig_node->router) - return NULL; - - /* without bonding, the first node should - * always choose the default router. */ - - bonding_enabled = atomic_read(&bat_priv->bonding_enabled); - - if ((!recv_if) && (!bonding_enabled)) - return orig_node->router; - - router_orig = orig_node->router->orig_node; - - /* if we have something in the primary_addr, we can search - * for a potential bonding candidate. */ - if (memcmp(router_orig->primary_addr, zero_mac, ETH_ALEN) == 0) - return orig_node->router; - - /* find the orig_node which has the primary interface. might - * even be the same as our router_orig in many cases */ - - if (memcmp(router_orig->primary_addr, - router_orig->orig, ETH_ALEN) == 0) { - primary_orig_node = router_orig; - } else { - primary_orig_node = hash_find(bat_priv->orig_hash, - router_orig->primary_addr); - - if (!primary_orig_node) - return orig_node->router; - } - - /* with less than 2 candidates, we can't do any - * bonding and prefer the original router. */ - - if (primary_orig_node->bond.candidates < 2) - return orig_node->router; - - - /* all nodes between should choose a candidate which - * is is not on the interface where the packet came - * in. */ - first_candidate = primary_orig_node->bond.selected; - router = first_candidate; - - if (bonding_enabled) { - /* in the bonding case, send the packets in a round - * robin fashion over the remaining interfaces. */ - do { - /* recv_if == NULL on the first node. */ - if (router->if_incoming != recv_if) - break; - - router = router->next_bond_candidate; - } while (router != first_candidate); - - primary_orig_node->bond.selected = router->next_bond_candidate; - - } else { - /* if bonding is disabled, use the best of the - * remaining candidates which are not using - * this interface. */ - best_router = first_candidate; - - do { - /* recv_if == NULL on the first node. */ - if ((router->if_incoming != recv_if) && - (router->tq_avg > best_router->tq_avg)) - best_router = router; - - router = router->next_bond_candidate; - } while (router != first_candidate); - - router = best_router; - } - - return router; -} - -static int check_unicast_packet(struct sk_buff *skb, int hdr_size) -{ - struct ethhdr *ethhdr; - - /* drop packet if it has not necessary minimum size */ - if (unlikely(!pskb_may_pull(skb, hdr_size))) - return -1; - - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* packet with unicast indication but broadcast recipient */ - if (is_bcast(ethhdr->h_dest)) - return -1; - - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - return -1; - - /* not for me */ - if (!is_my_mac(ethhdr->h_dest)) - return -1; - - return 0; -} - -static int route_unicast_packet(struct sk_buff *skb, - struct batman_if *recv_if, int hdr_size) -{ - struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); - struct orig_node *orig_node; - struct neigh_node *router; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN]; - unsigned long flags; - struct unicast_packet *unicast_packet; - struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb); - - unicast_packet = (struct unicast_packet *)skb->data; - - /* packet for me */ - if (is_my_mac(unicast_packet->dest)) { - interface_rx(recv_if->soft_iface, skb, hdr_size); - return NET_RX_SUCCESS; - } - - /* TTL exceeded */ - if (unicast_packet->ttl < 2) { - pr_debug("Warning - can't forward unicast packet from %pM to " - "%pM: ttl exceeded\n", ethhdr->h_source, - unicast_packet->dest); - return NET_RX_DROP; - } - - /* get routing information */ - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, unicast_packet->dest)); - - router = find_router(bat_priv, orig_node, recv_if); - - if (!router) { - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return NET_RX_DROP; - } - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - - batman_if = router->if_incoming; - memcpy(dstaddr, router->addr, ETH_ALEN); - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - /* create a copy of the skb, if needed, to modify it. */ - if (skb_cow(skb, sizeof(struct ethhdr)) < 0) - return NET_RX_DROP; - - unicast_packet = (struct unicast_packet *)skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* decrement ttl */ - unicast_packet->ttl--; - - /* route it */ - send_skb_packet(skb, batman_if, dstaddr); - - return NET_RX_SUCCESS; -} - -int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if) -{ - struct unicast_packet *unicast_packet; - int hdr_size = sizeof(struct unicast_packet); - - if (check_unicast_packet(skb, hdr_size) < 0) - return NET_RX_DROP; - - unicast_packet = (struct unicast_packet *)skb->data; - - /* packet for me */ - if (is_my_mac(unicast_packet->dest)) { - interface_rx(recv_if->soft_iface, skb, hdr_size); - return NET_RX_SUCCESS; - } - - return route_unicast_packet(skb, recv_if, hdr_size); -} - -int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if) -{ - struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); - struct unicast_frag_packet *unicast_packet; - struct orig_node *orig_node; - struct frag_packet_list_entry *tmp_frag_entry; - int hdr_size = sizeof(struct unicast_frag_packet); - unsigned long flags; - - if (check_unicast_packet(skb, hdr_size) < 0) - return NET_RX_DROP; - - unicast_packet = (struct unicast_frag_packet *)skb->data; - - /* packet for me */ - if (is_my_mac(unicast_packet->dest)) { - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, unicast_packet->orig)); - - if (!orig_node) { - pr_debug("couldn't find orig node for fragmentation\n"); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, - flags); - return NET_RX_DROP; - } - - orig_node->last_frag_packet = jiffies; - - if (list_empty(&orig_node->frag_list) && - create_frag_buffer(&orig_node->frag_list)) { - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, - flags); - return NET_RX_DROP; - } - - tmp_frag_entry = - search_frag_packet(&orig_node->frag_list, - unicast_packet); - - if (!tmp_frag_entry) { - create_frag_entry(&orig_node->frag_list, skb); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, - flags); - return NET_RX_SUCCESS; - } - - skb = merge_frag_packet(&orig_node->frag_list, - tmp_frag_entry, skb); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - if (!skb) - return NET_RX_DROP; - - interface_rx(recv_if->soft_iface, skb, hdr_size); - return NET_RX_SUCCESS; - } - - return route_unicast_packet(skb, recv_if, hdr_size); -} - - -int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if) -{ - struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); - struct orig_node *orig_node; - struct bcast_packet *bcast_packet; - struct ethhdr *ethhdr; - int hdr_size = sizeof(struct bcast_packet); - int32_t seq_diff; - unsigned long flags; - - /* drop packet if it has not necessary minimum size */ - if (unlikely(!pskb_may_pull(skb, hdr_size))) - return NET_RX_DROP; - - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* packet with broadcast indication but unicast recipient */ - if (!is_bcast(ethhdr->h_dest)) - return NET_RX_DROP; - - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - return NET_RX_DROP; - - /* ignore broadcasts sent by myself */ - if (is_my_mac(ethhdr->h_source)) - return NET_RX_DROP; - - bcast_packet = (struct bcast_packet *)skb->data; - - /* ignore broadcasts originated by myself */ - if (is_my_mac(bcast_packet->orig)) - return NET_RX_DROP; - - if (bcast_packet->ttl < 2) - return NET_RX_DROP; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - orig_node = ((struct orig_node *) - hash_find(bat_priv->orig_hash, bcast_packet->orig)); - - if (orig_node == NULL) { - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return NET_RX_DROP; - } - - /* check whether the packet is a duplicate */ - if (get_bit_status(orig_node->bcast_bits, - orig_node->last_bcast_seqno, - ntohl(bcast_packet->seqno))) { - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return NET_RX_DROP; - } - - seq_diff = ntohl(bcast_packet->seqno) - orig_node->last_bcast_seqno; - - /* check whether the packet is old and the host just restarted. */ - if (window_protected(bat_priv, seq_diff, - &orig_node->bcast_seqno_reset)) { - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - return NET_RX_DROP; - } - - /* mark broadcast in flood history, update window position - * if required. */ - if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1)) - orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno); - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - /* rebroadcast packet */ - add_bcast_packet_to_list(bat_priv, skb); - - /* broadcast for me */ - interface_rx(recv_if->soft_iface, skb, hdr_size); - - return NET_RX_SUCCESS; -} - -int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if) -{ - struct vis_packet *vis_packet; - struct ethhdr *ethhdr; - struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); - int hdr_size = sizeof(struct vis_packet); - - /* keep skb linear */ - if (skb_linearize(skb) < 0) - return NET_RX_DROP; - - if (unlikely(!pskb_may_pull(skb, hdr_size))) - return NET_RX_DROP; - - vis_packet = (struct vis_packet *)skb->data; - ethhdr = (struct ethhdr *)skb_mac_header(skb); - - /* not for me */ - if (!is_my_mac(ethhdr->h_dest)) - return NET_RX_DROP; - - /* ignore own packets */ - if (is_my_mac(vis_packet->vis_orig)) - return NET_RX_DROP; - - if (is_my_mac(vis_packet->sender_orig)) - return NET_RX_DROP; - - switch (vis_packet->vis_type) { - case VIS_TYPE_SERVER_SYNC: - receive_server_sync_packet(bat_priv, vis_packet, - skb_headlen(skb)); - break; - - case VIS_TYPE_CLIENT_UPDATE: - receive_client_update_packet(bat_priv, vis_packet, - skb_headlen(skb)); - break; - - default: /* ignore unknown packet */ - break; - } - - /* We take a copy of the data in the packet, so we should - always free the skbuf. */ - return NET_RX_DROP; -} diff --git a/drivers/staging/batman-adv/routing.h b/drivers/staging/batman-adv/routing.h deleted file mode 100644 index 92674c8d9c03..000000000000 --- a/drivers/staging/batman-adv/routing.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_ROUTING_H_ -#define _NET_BATMAN_ADV_ROUTING_H_ - -#include "types.h" - -void slide_own_bcast_window(struct batman_if *batman_if); -void receive_bat_packet(struct ethhdr *ethhdr, - struct batman_packet *batman_packet, - unsigned char *hna_buff, int hna_buff_len, - struct batman_if *if_incoming); -void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node, - struct neigh_node *neigh_node, unsigned char *hna_buff, - int hna_buff_len); -int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if); -int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if); -int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if); -int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if); -int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if); -int recv_bat_packet(struct sk_buff *skb, struct batman_if *recv_if); -struct neigh_node *find_router(struct bat_priv *bat_priv, - struct orig_node *orig_node, struct batman_if *recv_if); -void update_bonding_candidates(struct bat_priv *bat_priv, - struct orig_node *orig_node); - -#endif /* _NET_BATMAN_ADV_ROUTING_H_ */ diff --git a/drivers/staging/batman-adv/send.c b/drivers/staging/batman-adv/send.c deleted file mode 100644 index 7adf76ddd0ba..000000000000 --- a/drivers/staging/batman-adv/send.c +++ /dev/null @@ -1,580 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "send.h" -#include "routing.h" -#include "translation-table.h" -#include "soft-interface.h" -#include "hard-interface.h" -#include "types.h" -#include "vis.h" -#include "aggregation.h" - - -static void send_outstanding_bcast_packet(struct work_struct *work); - -/* apply hop penalty for a normal link */ -static uint8_t hop_penalty(const uint8_t tq) -{ - return (tq * (TQ_MAX_VALUE - TQ_HOP_PENALTY)) / (TQ_MAX_VALUE); -} - -/* when do we schedule our own packet to be sent */ -static unsigned long own_send_time(struct bat_priv *bat_priv) -{ - return jiffies + msecs_to_jiffies( - atomic_read(&bat_priv->orig_interval) - - JITTER + (random32() % 2*JITTER)); -} - -/* when do we schedule a forwarded packet to be sent */ -static unsigned long forward_send_time(struct bat_priv *bat_priv) -{ - return jiffies + msecs_to_jiffies(random32() % (JITTER/2)); -} - -/* send out an already prepared packet to the given address via the - * specified batman interface */ -int send_skb_packet(struct sk_buff *skb, - struct batman_if *batman_if, - uint8_t *dst_addr) -{ - struct ethhdr *ethhdr; - - if (batman_if->if_status != IF_ACTIVE) - goto send_skb_err; - - if (unlikely(!batman_if->net_dev)) - goto send_skb_err; - - if (!(batman_if->net_dev->flags & IFF_UP)) { - pr_warning("Interface %s is not up - can't send packet via " - "that interface!\n", batman_if->net_dev->name); - goto send_skb_err; - } - - /* push to the ethernet header. */ - if (my_skb_head_push(skb, sizeof(struct ethhdr)) < 0) - goto send_skb_err; - - skb_reset_mac_header(skb); - - ethhdr = (struct ethhdr *) skb_mac_header(skb); - memcpy(ethhdr->h_source, batman_if->net_dev->dev_addr, ETH_ALEN); - memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN); - ethhdr->h_proto = __constant_htons(ETH_P_BATMAN); - - skb_set_network_header(skb, ETH_HLEN); - skb->priority = TC_PRIO_CONTROL; - skb->protocol = __constant_htons(ETH_P_BATMAN); - - skb->dev = batman_if->net_dev; - - /* dev_queue_xmit() returns a negative result on error. However on - * congestion and traffic shaping, it drops and returns NET_XMIT_DROP - * (which is > 0). This will not be treated as an error. */ - - return dev_queue_xmit(skb); -send_skb_err: - kfree_skb(skb); - return NET_XMIT_DROP; -} - -/* Send a packet to a given interface */ -static void send_packet_to_if(struct forw_packet *forw_packet, - struct batman_if *batman_if) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - char *fwd_str; - uint8_t packet_num; - int16_t buff_pos; - struct batman_packet *batman_packet; - struct sk_buff *skb; - - if (batman_if->if_status != IF_ACTIVE) - return; - - packet_num = 0; - buff_pos = 0; - batman_packet = (struct batman_packet *)forw_packet->skb->data; - - /* adjust all flags and log packets */ - while (aggregated_packet(buff_pos, - forw_packet->packet_len, - batman_packet->num_hna)) { - - /* we might have aggregated direct link packets with an - * ordinary base packet */ - if ((forw_packet->direct_link_flags & (1 << packet_num)) && - (forw_packet->if_incoming == batman_if)) - batman_packet->flags |= DIRECTLINK; - else - batman_packet->flags &= ~DIRECTLINK; - - fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ? - "Sending own" : - "Forwarding")); - bat_dbg(DBG_BATMAN, bat_priv, - "%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d," - " IDF %s) on interface %s [%pM]\n", - fwd_str, (packet_num > 0 ? "aggregated " : ""), - batman_packet->orig, ntohl(batman_packet->seqno), - batman_packet->tq, batman_packet->ttl, - (batman_packet->flags & DIRECTLINK ? - "on" : "off"), - batman_if->net_dev->name, batman_if->net_dev->dev_addr); - - buff_pos += sizeof(struct batman_packet) + - (batman_packet->num_hna * ETH_ALEN); - packet_num++; - batman_packet = (struct batman_packet *) - (forw_packet->skb->data + buff_pos); - } - - /* create clone because function is called more than once */ - skb = skb_clone(forw_packet->skb, GFP_ATOMIC); - if (skb) - send_skb_packet(skb, batman_if, broadcast_addr); -} - -/* send a batman packet */ -static void send_packet(struct forw_packet *forw_packet) -{ - struct batman_if *batman_if; - struct net_device *soft_iface; - struct bat_priv *bat_priv; - struct batman_packet *batman_packet = - (struct batman_packet *)(forw_packet->skb->data); - unsigned char directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0); - - if (!forw_packet->if_incoming) { - pr_err("Error - can't forward packet: incoming iface not " - "specified\n"); - return; - } - - soft_iface = forw_packet->if_incoming->soft_iface; - bat_priv = netdev_priv(soft_iface); - - if (forw_packet->if_incoming->if_status != IF_ACTIVE) - return; - - /* multihomed peer assumed */ - /* non-primary OGMs are only broadcasted on their interface */ - if ((directlink && (batman_packet->ttl == 1)) || - (forw_packet->own && (forw_packet->if_incoming->if_num > 0))) { - - /* FIXME: what about aggregated packets ? */ - bat_dbg(DBG_BATMAN, bat_priv, - "%s packet (originator %pM, seqno %d, TTL %d) " - "on interface %s [%pM]\n", - (forw_packet->own ? "Sending own" : "Forwarding"), - batman_packet->orig, ntohl(batman_packet->seqno), - batman_packet->ttl, - forw_packet->if_incoming->net_dev->name, - forw_packet->if_incoming->net_dev->dev_addr); - - /* skb is only used once and than forw_packet is free'd */ - send_skb_packet(forw_packet->skb, forw_packet->if_incoming, - broadcast_addr); - forw_packet->skb = NULL; - - return; - } - - /* broadcast on every interface */ - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if (batman_if->soft_iface != soft_iface) - continue; - - send_packet_to_if(forw_packet, batman_if); - } - rcu_read_unlock(); -} - -static void rebuild_batman_packet(struct bat_priv *bat_priv, - struct batman_if *batman_if) -{ - int new_len; - unsigned char *new_buff; - struct batman_packet *batman_packet; - - new_len = sizeof(struct batman_packet) + - (bat_priv->num_local_hna * ETH_ALEN); - new_buff = kmalloc(new_len, GFP_ATOMIC); - - /* keep old buffer if kmalloc should fail */ - if (new_buff) { - memcpy(new_buff, batman_if->packet_buff, - sizeof(struct batman_packet)); - batman_packet = (struct batman_packet *)new_buff; - - batman_packet->num_hna = hna_local_fill_buffer(bat_priv, - new_buff + sizeof(struct batman_packet), - new_len - sizeof(struct batman_packet)); - - kfree(batman_if->packet_buff); - batman_if->packet_buff = new_buff; - batman_if->packet_len = new_len; - } -} - -void schedule_own_packet(struct batman_if *batman_if) -{ - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); - unsigned long send_time; - struct batman_packet *batman_packet; - int vis_server; - - if ((batman_if->if_status == IF_NOT_IN_USE) || - (batman_if->if_status == IF_TO_BE_REMOVED)) - return; - - vis_server = atomic_read(&bat_priv->vis_mode); - - /** - * the interface gets activated here to avoid race conditions between - * the moment of activating the interface in - * hardif_activate_interface() where the originator mac is set and - * outdated packets (especially uninitialized mac addresses) in the - * packet queue - */ - if (batman_if->if_status == IF_TO_BE_ACTIVATED) - batman_if->if_status = IF_ACTIVE; - - /* if local hna has changed and interface is a primary interface */ - if ((atomic_read(&bat_priv->hna_local_changed)) && - (batman_if == bat_priv->primary_if)) - rebuild_batman_packet(bat_priv, batman_if); - - /** - * NOTE: packet_buff might just have been re-allocated in - * rebuild_batman_packet() - */ - batman_packet = (struct batman_packet *)batman_if->packet_buff; - - /* change sequence number to network order */ - batman_packet->seqno = - htonl((uint32_t)atomic_read(&batman_if->seqno)); - - if (vis_server == VIS_TYPE_SERVER_SYNC) - batman_packet->flags |= VIS_SERVER; - else - batman_packet->flags &= ~VIS_SERVER; - - atomic_inc(&batman_if->seqno); - - slide_own_bcast_window(batman_if); - send_time = own_send_time(bat_priv); - add_bat_packet_to_list(bat_priv, - batman_if->packet_buff, - batman_if->packet_len, - batman_if, 1, send_time); -} - -void schedule_forward_packet(struct orig_node *orig_node, - struct ethhdr *ethhdr, - struct batman_packet *batman_packet, - uint8_t directlink, int hna_buff_len, - struct batman_if *if_incoming) -{ - struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - unsigned char in_tq, in_ttl, tq_avg = 0; - unsigned long send_time; - - if (batman_packet->ttl <= 1) { - bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n"); - return; - } - - in_tq = batman_packet->tq; - in_ttl = batman_packet->ttl; - - batman_packet->ttl--; - memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN); - - /* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast - * of our best tq value */ - if ((orig_node->router) && (orig_node->router->tq_avg != 0)) { - - /* rebroadcast ogm of best ranking neighbor as is */ - if (!compare_orig(orig_node->router->addr, ethhdr->h_source)) { - batman_packet->tq = orig_node->router->tq_avg; - - if (orig_node->router->last_ttl) - batman_packet->ttl = orig_node->router->last_ttl - - 1; - } - - tq_avg = orig_node->router->tq_avg; - } - - /* apply hop penalty */ - batman_packet->tq = hop_penalty(batman_packet->tq); - - bat_dbg(DBG_BATMAN, bat_priv, - "Forwarding packet: tq_orig: %i, tq_avg: %i, " - "tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n", - in_tq, tq_avg, batman_packet->tq, in_ttl - 1, - batman_packet->ttl); - - batman_packet->seqno = htonl(batman_packet->seqno); - - /* switch of primaries first hop flag when forwarding */ - batman_packet->flags &= ~PRIMARIES_FIRST_HOP; - if (directlink) - batman_packet->flags |= DIRECTLINK; - else - batman_packet->flags &= ~DIRECTLINK; - - send_time = forward_send_time(bat_priv); - add_bat_packet_to_list(bat_priv, - (unsigned char *)batman_packet, - sizeof(struct batman_packet) + hna_buff_len, - if_incoming, 0, send_time); -} - -static void forw_packet_free(struct forw_packet *forw_packet) -{ - if (forw_packet->skb) - kfree_skb(forw_packet->skb); - kfree(forw_packet); -} - -static void _add_bcast_packet_to_list(struct bat_priv *bat_priv, - struct forw_packet *forw_packet, - unsigned long send_time) -{ - unsigned long flags; - INIT_HLIST_NODE(&forw_packet->list); - - /* add new packet to packet list */ - spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags); - hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list); - spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags); - - /* start timer for this packet */ - INIT_DELAYED_WORK(&forw_packet->delayed_work, - send_outstanding_bcast_packet); - queue_delayed_work(bat_event_workqueue, &forw_packet->delayed_work, - send_time); -} - -#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) -/* add a broadcast packet to the queue and setup timers. broadcast packets - * are sent multiple times to increase probability for beeing received. - * - * This function returns NETDEV_TX_OK on success and NETDEV_TX_BUSY on - * errors. - * - * The skb is not consumed, so the caller should make sure that the - * skb is freed. */ -int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb) -{ - struct forw_packet *forw_packet; - struct bcast_packet *bcast_packet; - - if (!atomic_dec_not_zero(&bat_priv->bcast_queue_left)) { - bat_dbg(DBG_BATMAN, bat_priv, "bcast packet queue full\n"); - goto out; - } - - if (!bat_priv->primary_if) - goto out; - - forw_packet = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC); - - if (!forw_packet) - goto out_and_inc; - - skb = skb_copy(skb, GFP_ATOMIC); - if (!skb) - goto packet_free; - - /* as we have a copy now, it is safe to decrease the TTL */ - bcast_packet = (struct bcast_packet *)skb->data; - bcast_packet->ttl--; - - skb_reset_mac_header(skb); - - forw_packet->skb = skb; - forw_packet->if_incoming = bat_priv->primary_if; - - /* how often did we send the bcast packet ? */ - forw_packet->num_packets = 0; - - _add_bcast_packet_to_list(bat_priv, forw_packet, 1); - return NETDEV_TX_OK; - -packet_free: - kfree(forw_packet); -out_and_inc: - atomic_inc(&bat_priv->bcast_queue_left); -out: - return NETDEV_TX_BUSY; -} - -static void send_outstanding_bcast_packet(struct work_struct *work) -{ - struct batman_if *batman_if; - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct forw_packet *forw_packet = - container_of(delayed_work, struct forw_packet, delayed_work); - unsigned long flags; - struct sk_buff *skb1; - struct net_device *soft_iface = forw_packet->if_incoming->soft_iface; - struct bat_priv *bat_priv = netdev_priv(soft_iface); - - spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags); - hlist_del(&forw_packet->list); - spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags); - - if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING) - goto out; - - /* rebroadcast packet */ - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - if (batman_if->soft_iface != soft_iface) - continue; - - /* send a copy of the saved skb */ - skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC); - if (skb1) - send_skb_packet(skb1, batman_if, broadcast_addr); - } - rcu_read_unlock(); - - forw_packet->num_packets++; - - /* if we still have some more bcasts to send */ - if (forw_packet->num_packets < 3) { - _add_bcast_packet_to_list(bat_priv, forw_packet, - ((5 * HZ) / 1000)); - return; - } - -out: - forw_packet_free(forw_packet); - atomic_inc(&bat_priv->bcast_queue_left); -} - -void send_outstanding_bat_packet(struct work_struct *work) -{ - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct forw_packet *forw_packet = - container_of(delayed_work, struct forw_packet, delayed_work); - unsigned long flags; - struct bat_priv *bat_priv; - - bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); - spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags); - hlist_del(&forw_packet->list); - spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags); - - if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING) - goto out; - - send_packet(forw_packet); - - /** - * we have to have at least one packet in the queue - * to determine the queues wake up time unless we are - * shutting down - */ - if (forw_packet->own) - schedule_own_packet(forw_packet->if_incoming); - -out: - /* don't count own packet */ - if (!forw_packet->own) - atomic_inc(&bat_priv->batman_queue_left); - - forw_packet_free(forw_packet); -} - -void purge_outstanding_packets(struct bat_priv *bat_priv, - struct batman_if *batman_if) -{ - struct forw_packet *forw_packet; - struct hlist_node *tmp_node, *safe_tmp_node; - unsigned long flags; - - if (batman_if) - bat_dbg(DBG_BATMAN, bat_priv, - "purge_outstanding_packets(): %s\n", - batman_if->net_dev->name); - else - bat_dbg(DBG_BATMAN, bat_priv, - "purge_outstanding_packets()\n"); - - /* free bcast list */ - spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags); - hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node, - &bat_priv->forw_bcast_list, list) { - - /** - * if purge_outstanding_packets() was called with an argmument - * we delete only packets belonging to the given interface - */ - if ((batman_if) && - (forw_packet->if_incoming != batman_if)) - continue; - - spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags); - - /** - * send_outstanding_bcast_packet() will lock the list to - * delete the item from the list - */ - cancel_delayed_work_sync(&forw_packet->delayed_work); - spin_lock_irqsave(&bat_priv->forw_bcast_list_lock, flags); - } - spin_unlock_irqrestore(&bat_priv->forw_bcast_list_lock, flags); - - /* free batman packet list */ - spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags); - hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node, - &bat_priv->forw_bat_list, list) { - - /** - * if purge_outstanding_packets() was called with an argmument - * we delete only packets belonging to the given interface - */ - if ((batman_if) && - (forw_packet->if_incoming != batman_if)) - continue; - - spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags); - - /** - * send_outstanding_bat_packet() will lock the list to - * delete the item from the list - */ - cancel_delayed_work_sync(&forw_packet->delayed_work); - spin_lock_irqsave(&bat_priv->forw_bat_list_lock, flags); - } - spin_unlock_irqrestore(&bat_priv->forw_bat_list_lock, flags); -} diff --git a/drivers/staging/batman-adv/send.h b/drivers/staging/batman-adv/send.h deleted file mode 100644 index c4cefa8e4f85..000000000000 --- a/drivers/staging/batman-adv/send.h +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_SEND_H_ -#define _NET_BATMAN_ADV_SEND_H_ - -#include "types.h" - -int send_skb_packet(struct sk_buff *skb, - struct batman_if *batman_if, - uint8_t *dst_addr); -void schedule_own_packet(struct batman_if *batman_if); -void schedule_forward_packet(struct orig_node *orig_node, - struct ethhdr *ethhdr, - struct batman_packet *batman_packet, - uint8_t directlink, int hna_buff_len, - struct batman_if *if_outgoing); -int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb); -void send_outstanding_bat_packet(struct work_struct *work); -void purge_outstanding_packets(struct bat_priv *bat_priv, - struct batman_if *batman_if); - -#endif /* _NET_BATMAN_ADV_SEND_H_ */ diff --git a/drivers/staging/batman-adv/soft-interface.c b/drivers/staging/batman-adv/soft-interface.c deleted file mode 100644 index 0e996181daf7..000000000000 --- a/drivers/staging/batman-adv/soft-interface.c +++ /dev/null @@ -1,398 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "soft-interface.h" -#include "hard-interface.h" -#include "routing.h" -#include "send.h" -#include "bat_debugfs.h" -#include "translation-table.h" -#include "types.h" -#include "hash.h" -#include "send.h" -#include "bat_sysfs.h" -#include <linux/slab.h> -#include <linux/ethtool.h> -#include <linux/etherdevice.h> -#include "unicast.h" - - -static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); -static void bat_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info); -static u32 bat_get_msglevel(struct net_device *dev); -static void bat_set_msglevel(struct net_device *dev, u32 value); -static u32 bat_get_link(struct net_device *dev); -static u32 bat_get_rx_csum(struct net_device *dev); -static int bat_set_rx_csum(struct net_device *dev, u32 data); - -static const struct ethtool_ops bat_ethtool_ops = { - .get_settings = bat_get_settings, - .get_drvinfo = bat_get_drvinfo, - .get_msglevel = bat_get_msglevel, - .set_msglevel = bat_set_msglevel, - .get_link = bat_get_link, - .get_rx_csum = bat_get_rx_csum, - .set_rx_csum = bat_set_rx_csum -}; - -int my_skb_head_push(struct sk_buff *skb, unsigned int len) -{ - int result; - - /** - * TODO: We must check if we can release all references to non-payload - * data using skb_header_release in our skbs to allow skb_cow_header to - * work optimally. This means that those skbs are not allowed to read - * or write any data which is before the current position of skb->data - * after that call and thus allow other skbs with the same data buffer - * to write freely in that area. - */ - result = skb_cow_head(skb, len); - if (result < 0) - return result; - - skb_push(skb, len); - return 0; -} - -static int interface_open(struct net_device *dev) -{ - netif_start_queue(dev); - return 0; -} - -static int interface_release(struct net_device *dev) -{ - netif_stop_queue(dev); - return 0; -} - -static struct net_device_stats *interface_stats(struct net_device *dev) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - return &bat_priv->stats; -} - -static int interface_set_mac_addr(struct net_device *dev, void *p) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - struct sockaddr *addr = p; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - /* only modify hna-table if it has been initialised before */ - if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) { - hna_local_remove(bat_priv, dev->dev_addr, - "mac address changed"); - hna_local_add(dev, addr->sa_data); - } - - memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); - - return 0; -} - -static int interface_change_mtu(struct net_device *dev, int new_mtu) -{ - /* check ranges */ - if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev))) - return -EINVAL; - - dev->mtu = new_mtu; - - return 0; -} - -int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) -{ - struct ethhdr *ethhdr = (struct ethhdr *)skb->data; - struct bat_priv *bat_priv = netdev_priv(soft_iface); - struct bcast_packet *bcast_packet; - int data_len = skb->len, ret; - - if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) - goto dropped; - - soft_iface->trans_start = jiffies; - - /* TODO: check this for locks */ - hna_local_add(soft_iface, ethhdr->h_source); - - /* ethernet packet should be broadcasted */ - if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest)) { - if (!bat_priv->primary_if) - goto dropped; - - if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0) - goto dropped; - - bcast_packet = (struct bcast_packet *)skb->data; - bcast_packet->version = COMPAT_VERSION; - bcast_packet->ttl = TTL; - - /* batman packet type: broadcast */ - bcast_packet->packet_type = BAT_BCAST; - - /* hw address of first interface is the orig mac because only - * this mac is known throughout the mesh */ - memcpy(bcast_packet->orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - - /* set broadcast sequence number */ - bcast_packet->seqno = - htonl(atomic_inc_return(&bat_priv->bcast_seqno)); - - add_bcast_packet_to_list(bat_priv, skb); - - /* a copy is stored in the bcast list, therefore removing - * the original skb. */ - kfree_skb(skb); - - /* unicast packet */ - } else { - ret = unicast_send_skb(skb, bat_priv); - if (ret != 0) - goto dropped_freed; - } - - bat_priv->stats.tx_packets++; - bat_priv->stats.tx_bytes += data_len; - goto end; - -dropped: - kfree_skb(skb); -dropped_freed: - bat_priv->stats.tx_dropped++; -end: - return NETDEV_TX_OK; -} - -void interface_rx(struct net_device *soft_iface, - struct sk_buff *skb, int hdr_size) -{ - struct bat_priv *priv = netdev_priv(soft_iface); - - /* check if enough space is available for pulling, and pull */ - if (!pskb_may_pull(skb, hdr_size)) - goto dropped; - - skb_pull_rcsum(skb, hdr_size); -/* skb_set_mac_header(skb, -sizeof(struct ethhdr));*/ - - /* skb->dev & skb->pkt_type are set here */ - if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) - goto dropped; - skb->protocol = eth_type_trans(skb, soft_iface); - - /* should not be neccesary anymore as we use skb_pull_rcsum() - * TODO: please verify this and remove this TODO - * -- Dec 21st 2009, Simon Wunderlich */ - -/* skb->ip_summed = CHECKSUM_UNNECESSARY;*/ - - priv->stats.rx_packets++; - priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr); - - soft_iface->last_rx = jiffies; - - netif_rx(skb); - return; - -dropped: - kfree_skb(skb); - return; -} - -#ifdef HAVE_NET_DEVICE_OPS -static const struct net_device_ops bat_netdev_ops = { - .ndo_open = interface_open, - .ndo_stop = interface_release, - .ndo_get_stats = interface_stats, - .ndo_set_mac_address = interface_set_mac_addr, - .ndo_change_mtu = interface_change_mtu, - .ndo_start_xmit = interface_tx, - .ndo_validate_addr = eth_validate_addr -}; -#endif - -static void interface_setup(struct net_device *dev) -{ - struct bat_priv *priv = netdev_priv(dev); - char dev_addr[ETH_ALEN]; - - ether_setup(dev); - -#ifdef HAVE_NET_DEVICE_OPS - dev->netdev_ops = &bat_netdev_ops; -#else - dev->open = interface_open; - dev->stop = interface_release; - dev->get_stats = interface_stats; - dev->set_mac_address = interface_set_mac_addr; - dev->change_mtu = interface_change_mtu; - dev->hard_start_xmit = interface_tx; -#endif - dev->destructor = free_netdev; - - /** - * can't call min_mtu, because the needed variables - * have not been initialized yet - */ - dev->mtu = ETH_DATA_LEN; - dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the - * skbuff for our header */ - - /* generate random address */ - random_ether_addr(dev_addr); - memcpy(dev->dev_addr, dev_addr, ETH_ALEN); - - SET_ETHTOOL_OPS(dev, &bat_ethtool_ops); - - memset(priv, 0, sizeof(struct bat_priv)); -} - -struct net_device *softif_create(char *name) -{ - struct net_device *soft_iface; - struct bat_priv *bat_priv; - int ret; - - soft_iface = alloc_netdev(sizeof(struct bat_priv) , name, - interface_setup); - - if (!soft_iface) { - pr_err("Unable to allocate the batman interface: %s\n", name); - goto out; - } - - ret = register_netdev(soft_iface); - if (ret < 0) { - pr_err("Unable to register the batman interface '%s': %i\n", - name, ret); - goto free_soft_iface; - } - - bat_priv = netdev_priv(soft_iface); - - atomic_set(&bat_priv->aggregation_enabled, 1); - atomic_set(&bat_priv->bonding_enabled, 0); - atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE); - atomic_set(&bat_priv->orig_interval, 1000); - atomic_set(&bat_priv->log_level, 0); - atomic_set(&bat_priv->frag_enabled, 1); - atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN); - atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN); - - atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); - atomic_set(&bat_priv->bcast_seqno, 1); - atomic_set(&bat_priv->hna_local_changed, 0); - - bat_priv->primary_if = NULL; - bat_priv->num_ifaces = 0; - - ret = sysfs_add_meshif(soft_iface); - if (ret < 0) - goto unreg_soft_iface; - - ret = debugfs_add_meshif(soft_iface); - if (ret < 0) - goto unreg_sysfs; - - ret = mesh_init(soft_iface); - if (ret < 0) - goto unreg_debugfs; - - return soft_iface; - -unreg_debugfs: - debugfs_del_meshif(soft_iface); -unreg_sysfs: - sysfs_del_meshif(soft_iface); -unreg_soft_iface: - unregister_netdev(soft_iface); - return NULL; - -free_soft_iface: - free_netdev(soft_iface); -out: - return NULL; -} - -void softif_destroy(struct net_device *soft_iface) -{ - debugfs_del_meshif(soft_iface); - sysfs_del_meshif(soft_iface); - mesh_free(soft_iface); - unregister_netdevice(soft_iface); -} - -/* ethtool */ -static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - cmd->supported = 0; - cmd->advertising = 0; - cmd->speed = SPEED_10; - cmd->duplex = DUPLEX_FULL; - cmd->port = PORT_TP; - cmd->phy_address = 0; - cmd->transceiver = XCVR_INTERNAL; - cmd->autoneg = AUTONEG_DISABLE; - cmd->maxtxpkt = 0; - cmd->maxrxpkt = 0; - - return 0; -} - -static void bat_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - strcpy(info->driver, "B.A.T.M.A.N. advanced"); - strcpy(info->version, SOURCE_VERSION); - strcpy(info->fw_version, "N/A"); - strcpy(info->bus_info, "batman"); -} - -static u32 bat_get_msglevel(struct net_device *dev) -{ - return -EOPNOTSUPP; -} - -static void bat_set_msglevel(struct net_device *dev, u32 value) -{ -} - -static u32 bat_get_link(struct net_device *dev) -{ - return 1; -} - -static u32 bat_get_rx_csum(struct net_device *dev) -{ - return 0; -} - -static int bat_set_rx_csum(struct net_device *dev, u32 data) -{ - return -EOPNOTSUPP; -} diff --git a/drivers/staging/batman-adv/soft-interface.h b/drivers/staging/batman-adv/soft-interface.h deleted file mode 100644 index 843a7ec082fe..000000000000 --- a/drivers/staging/batman-adv/soft-interface.h +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_SOFT_INTERFACE_H_ -#define _NET_BATMAN_ADV_SOFT_INTERFACE_H_ - -int my_skb_head_push(struct sk_buff *skb, unsigned int len); -int interface_tx(struct sk_buff *skb, struct net_device *soft_iface); -void interface_rx(struct net_device *soft_iface, - struct sk_buff *skb, int hdr_size); -struct net_device *softif_create(char *name); -void softif_destroy(struct net_device *soft_iface); - -#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */ diff --git a/drivers/staging/batman-adv/sysfs-class-net-batman-adv b/drivers/staging/batman-adv/sysfs-class-net-batman-adv deleted file mode 100644 index 38dd762def4b..000000000000 --- a/drivers/staging/batman-adv/sysfs-class-net-batman-adv +++ /dev/null @@ -1,14 +0,0 @@ - -What: /sys/class/net/<iface>/batman-adv/mesh_iface -Date: May 2010 -Contact: Marek Lindner <lindner_marek@yahoo.de> -Description: - The /sys/class/net/<iface>/batman-adv/mesh_iface file - displays the batman mesh interface this <iface> - currently is associated with. - -What: /sys/class/net/<iface>/batman-adv/iface_status -Date: May 2010 -Contact: Marek Lindner <lindner_marek@yahoo.de> -Description: - Indicates the status of <iface> as it is seen by batman. diff --git a/drivers/staging/batman-adv/sysfs-class-net-mesh b/drivers/staging/batman-adv/sysfs-class-net-mesh deleted file mode 100644 index b4cdb6038bf1..000000000000 --- a/drivers/staging/batman-adv/sysfs-class-net-mesh +++ /dev/null @@ -1,41 +0,0 @@ - -What: /sys/class/net/<mesh_iface>/mesh/aggregated_ogms -Date: May 2010 -Contact: Marek Lindner <lindner_marek@yahoo.de> -Description: - Indicates whether the batman protocol messages of the - mesh <mesh_iface> shall be aggregated or not. - -What: /sys/class/net/<mesh_iface>/mesh/bonding -Date: June 2010 -Contact: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> -Description: - Indicates whether the data traffic going through the - mesh will be sent using multiple interfaces at the - same time (if available). - -What: /sys/class/net/<mesh_iface>/mesh/fragmentation -Date: October 2010 -Contact: Andreas Langer <an.langer@gmx.de> -Description: - Indicates whether the data traffic going through the - mesh will be fragmented or silently discarded if the - packet size exceeds the outgoing interface MTU. - -What: /sys/class/net/<mesh_iface>/mesh/orig_interval -Date: May 2010 -Contact: Marek Lindner <lindner_marek@yahoo.de> -Description: - Defines the interval in milliseconds in which batman - sends its protocol messages. - -What: /sys/class/net/<mesh_iface>/mesh/vis_mode -Date: May 2010 -Contact: Marek Lindner <lindner_marek@yahoo.de> -Description: - Each batman node only maintains information about its - own local neighborhood, therefore generating graphs - showing the topology of the entire mesh is not easily - feasible without having a central instance to collect - the local topologies from all nodes. This file allows - to activate the collecting (server) mode. diff --git a/drivers/staging/batman-adv/translation-table.c b/drivers/staging/batman-adv/translation-table.c deleted file mode 100644 index 681ccbda3eac..000000000000 --- a/drivers/staging/batman-adv/translation-table.c +++ /dev/null @@ -1,518 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "translation-table.h" -#include "soft-interface.h" -#include "types.h" -#include "hash.h" - -static void hna_local_purge(struct work_struct *work); -static void _hna_global_del_orig(struct bat_priv *bat_priv, - struct hna_global_entry *hna_global_entry, - char *message); - -static void hna_local_start_timer(struct bat_priv *bat_priv) -{ - INIT_DELAYED_WORK(&bat_priv->hna_work, hna_local_purge); - queue_delayed_work(bat_event_workqueue, &bat_priv->hna_work, 10 * HZ); -} - -int hna_local_init(struct bat_priv *bat_priv) -{ - if (bat_priv->hna_local_hash) - return 1; - - bat_priv->hna_local_hash = hash_new(128, compare_orig, choose_orig); - - if (!bat_priv->hna_local_hash) - return 0; - - atomic_set(&bat_priv->hna_local_changed, 0); - hna_local_start_timer(bat_priv); - - return 1; -} - -void hna_local_add(struct net_device *soft_iface, uint8_t *addr) -{ - struct bat_priv *bat_priv = netdev_priv(soft_iface); - struct hna_local_entry *hna_local_entry; - struct hna_global_entry *hna_global_entry; - struct hashtable_t *swaphash; - unsigned long flags; - int required_bytes; - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - hna_local_entry = - ((struct hna_local_entry *)hash_find(bat_priv->hna_local_hash, - addr)); - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - - if (hna_local_entry) { - hna_local_entry->last_seen = jiffies; - return; - } - - /* only announce as many hosts as possible in the batman-packet and - space in batman_packet->num_hna That also should give a limit to - MAC-flooding. */ - required_bytes = (bat_priv->num_local_hna + 1) * ETH_ALEN; - required_bytes += BAT_PACKET_LEN; - - if ((required_bytes > ETH_DATA_LEN) || - (atomic_read(&bat_priv->aggregation_enabled) && - required_bytes > MAX_AGGREGATION_BYTES) || - (bat_priv->num_local_hna + 1 > 255)) { - bat_dbg(DBG_ROUTES, bat_priv, - "Can't add new local hna entry (%pM): " - "number of local hna entries exceeds packet size\n", - addr); - return; - } - - bat_dbg(DBG_ROUTES, bat_priv, - "Creating new local hna entry: %pM\n", addr); - - hna_local_entry = kmalloc(sizeof(struct hna_local_entry), GFP_ATOMIC); - if (!hna_local_entry) - return; - - memcpy(hna_local_entry->addr, addr, ETH_ALEN); - hna_local_entry->last_seen = jiffies; - - /* the batman interface mac address should never be purged */ - if (compare_orig(addr, soft_iface->dev_addr)) - hna_local_entry->never_purge = 1; - else - hna_local_entry->never_purge = 0; - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - - hash_add(bat_priv->hna_local_hash, hna_local_entry); - bat_priv->num_local_hna++; - atomic_set(&bat_priv->hna_local_changed, 1); - - if (bat_priv->hna_local_hash->elements * 4 > - bat_priv->hna_local_hash->size) { - swaphash = hash_resize(bat_priv->hna_local_hash, - bat_priv->hna_local_hash->size * 2); - - if (!swaphash) - pr_err("Couldn't resize local hna hash table\n"); - else - bat_priv->hna_local_hash = swaphash; - } - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - - /* remove address from global hash if present */ - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - - hna_global_entry = ((struct hna_global_entry *) - hash_find(bat_priv->hna_global_hash, addr)); - - if (hna_global_entry) - _hna_global_del_orig(bat_priv, hna_global_entry, - "local hna received"); - - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); -} - -int hna_local_fill_buffer(struct bat_priv *bat_priv, - unsigned char *buff, int buff_len) -{ - struct hna_local_entry *hna_local_entry; - HASHIT(hashit); - int i = 0; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - - while (hash_iterate(bat_priv->hna_local_hash, &hashit)) { - - if (buff_len < (i + 1) * ETH_ALEN) - break; - - hna_local_entry = hashit.bucket->data; - memcpy(buff + (i * ETH_ALEN), hna_local_entry->addr, ETH_ALEN); - - i++; - } - - /* if we did not get all new local hnas see you next time ;-) */ - if (i == bat_priv->num_local_hna) - atomic_set(&bat_priv->hna_local_changed, 0); - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - return i; -} - -int hna_local_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct bat_priv *bat_priv = netdev_priv(net_dev); - struct hna_local_entry *hna_local_entry; - HASHIT(hashit); - HASHIT(hashit_count); - unsigned long flags; - size_t buf_size, pos; - char *buff; - - if (!bat_priv->primary_if) { - return seq_printf(seq, "BATMAN mesh %s disabled - " - "please specify interfaces to enable it\n", - net_dev->name); - } - - seq_printf(seq, "Locally retrieved addresses (from %s) " - "announced via HNA:\n", - net_dev->name); - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - - buf_size = 1; - /* Estimate length for: " * xx:xx:xx:xx:xx:xx\n" */ - while (hash_iterate(bat_priv->hna_local_hash, &hashit_count)) - buf_size += 21; - - buff = kmalloc(buf_size, GFP_ATOMIC); - if (!buff) { - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - return -ENOMEM; - } - buff[0] = '\0'; - pos = 0; - - while (hash_iterate(bat_priv->hna_local_hash, &hashit)) { - hna_local_entry = hashit.bucket->data; - - pos += snprintf(buff + pos, 22, " * %pM\n", - hna_local_entry->addr); - } - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - - seq_printf(seq, "%s", buff); - kfree(buff); - return 0; -} - -static void _hna_local_del(void *data, void *arg) -{ - struct bat_priv *bat_priv = (struct bat_priv *)arg; - - kfree(data); - bat_priv->num_local_hna--; - atomic_set(&bat_priv->hna_local_changed, 1); -} - -static void hna_local_del(struct bat_priv *bat_priv, - struct hna_local_entry *hna_local_entry, - char *message) -{ - bat_dbg(DBG_ROUTES, bat_priv, "Deleting local hna entry (%pM): %s\n", - hna_local_entry->addr, message); - - hash_remove(bat_priv->hna_local_hash, hna_local_entry->addr); - _hna_local_del(hna_local_entry, bat_priv); -} - -void hna_local_remove(struct bat_priv *bat_priv, - uint8_t *addr, char *message) -{ - struct hna_local_entry *hna_local_entry; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - - hna_local_entry = (struct hna_local_entry *) - hash_find(bat_priv->hna_local_hash, addr); - if (hna_local_entry) - hna_local_del(bat_priv, hna_local_entry, message); - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); -} - -static void hna_local_purge(struct work_struct *work) -{ - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct bat_priv *bat_priv = - container_of(delayed_work, struct bat_priv, hna_work); - struct hna_local_entry *hna_local_entry; - HASHIT(hashit); - unsigned long flags; - unsigned long timeout; - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - - while (hash_iterate(bat_priv->hna_local_hash, &hashit)) { - hna_local_entry = hashit.bucket->data; - - timeout = hna_local_entry->last_seen + LOCAL_HNA_TIMEOUT * HZ; - - if ((!hna_local_entry->never_purge) && - time_after(jiffies, timeout)) - hna_local_del(bat_priv, hna_local_entry, - "address timed out"); - } - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - hna_local_start_timer(bat_priv); -} - -void hna_local_free(struct bat_priv *bat_priv) -{ - if (!bat_priv->hna_local_hash) - return; - - cancel_delayed_work_sync(&bat_priv->hna_work); - hash_delete(bat_priv->hna_local_hash, _hna_local_del, bat_priv); - bat_priv->hna_local_hash = NULL; -} - -int hna_global_init(struct bat_priv *bat_priv) -{ - if (bat_priv->hna_global_hash) - return 1; - - bat_priv->hna_global_hash = hash_new(128, compare_orig, choose_orig); - - if (!bat_priv->hna_global_hash) - return 0; - - return 1; -} - -void hna_global_add_orig(struct bat_priv *bat_priv, - struct orig_node *orig_node, - unsigned char *hna_buff, int hna_buff_len) -{ - struct hna_global_entry *hna_global_entry; - struct hna_local_entry *hna_local_entry; - struct hashtable_t *swaphash; - int hna_buff_count = 0; - unsigned long flags; - unsigned char *hna_ptr; - - while ((hna_buff_count + 1) * ETH_ALEN <= hna_buff_len) { - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - - hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN); - hna_global_entry = (struct hna_global_entry *) - hash_find(bat_priv->hna_global_hash, hna_ptr); - - if (!hna_global_entry) { - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, - flags); - - hna_global_entry = - kmalloc(sizeof(struct hna_global_entry), - GFP_ATOMIC); - - if (!hna_global_entry) - break; - - memcpy(hna_global_entry->addr, hna_ptr, ETH_ALEN); - - bat_dbg(DBG_ROUTES, bat_priv, - "Creating new global hna entry: " - "%pM (via %pM)\n", - hna_global_entry->addr, orig_node->orig); - - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - hash_add(bat_priv->hna_global_hash, hna_global_entry); - - } - - hna_global_entry->orig_node = orig_node; - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); - - /* remove address from local hash if present */ - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - - hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN); - hna_local_entry = (struct hna_local_entry *) - hash_find(bat_priv->hna_local_hash, hna_ptr); - - if (hna_local_entry) - hna_local_del(bat_priv, hna_local_entry, - "global hna received"); - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - - hna_buff_count++; - } - - /* initialize, and overwrite if malloc succeeds */ - orig_node->hna_buff = NULL; - orig_node->hna_buff_len = 0; - - if (hna_buff_len > 0) { - orig_node->hna_buff = kmalloc(hna_buff_len, GFP_ATOMIC); - if (orig_node->hna_buff) { - memcpy(orig_node->hna_buff, hna_buff, hna_buff_len); - orig_node->hna_buff_len = hna_buff_len; - } - } - - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - - if (bat_priv->hna_global_hash->elements * 4 > - bat_priv->hna_global_hash->size) { - swaphash = hash_resize(bat_priv->hna_global_hash, - bat_priv->hna_global_hash->size * 2); - - if (!swaphash) - pr_err("Couldn't resize global hna hash table\n"); - else - bat_priv->hna_global_hash = swaphash; - } - - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); -} - -int hna_global_seq_print_text(struct seq_file *seq, void *offset) -{ - struct net_device *net_dev = (struct net_device *)seq->private; - struct bat_priv *bat_priv = netdev_priv(net_dev); - struct hna_global_entry *hna_global_entry; - HASHIT(hashit); - HASHIT(hashit_count); - unsigned long flags; - size_t buf_size, pos; - char *buff; - - if (!bat_priv->primary_if) { - return seq_printf(seq, "BATMAN mesh %s disabled - " - "please specify interfaces to enable it\n", - net_dev->name); - } - - seq_printf(seq, "Globally announced HNAs received via the mesh %s\n", - net_dev->name); - - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - - buf_size = 1; - /* Estimate length for: " * xx:xx:xx:xx:xx:xx via xx:xx:xx:xx:xx:xx\n"*/ - while (hash_iterate(bat_priv->hna_global_hash, &hashit_count)) - buf_size += 43; - - buff = kmalloc(buf_size, GFP_ATOMIC); - if (!buff) { - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); - return -ENOMEM; - } - buff[0] = '\0'; - pos = 0; - - while (hash_iterate(bat_priv->hna_global_hash, &hashit)) { - hna_global_entry = hashit.bucket->data; - - pos += snprintf(buff + pos, 44, - " * %pM via %pM\n", hna_global_entry->addr, - hna_global_entry->orig_node->orig); - } - - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); - - seq_printf(seq, "%s", buff); - kfree(buff); - return 0; -} - -static void _hna_global_del_orig(struct bat_priv *bat_priv, - struct hna_global_entry *hna_global_entry, - char *message) -{ - bat_dbg(DBG_ROUTES, bat_priv, - "Deleting global hna entry %pM (via %pM): %s\n", - hna_global_entry->addr, hna_global_entry->orig_node->orig, - message); - - hash_remove(bat_priv->hna_global_hash, hna_global_entry->addr); - kfree(hna_global_entry); -} - -void hna_global_del_orig(struct bat_priv *bat_priv, - struct orig_node *orig_node, char *message) -{ - struct hna_global_entry *hna_global_entry; - int hna_buff_count = 0; - unsigned long flags; - unsigned char *hna_ptr; - - if (orig_node->hna_buff_len == 0) - return; - - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - - while ((hna_buff_count + 1) * ETH_ALEN <= orig_node->hna_buff_len) { - hna_ptr = orig_node->hna_buff + (hna_buff_count * ETH_ALEN); - hna_global_entry = (struct hna_global_entry *) - hash_find(bat_priv->hna_global_hash, hna_ptr); - - if ((hna_global_entry) && - (hna_global_entry->orig_node == orig_node)) - _hna_global_del_orig(bat_priv, hna_global_entry, - message); - - hna_buff_count++; - } - - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); - - orig_node->hna_buff_len = 0; - kfree(orig_node->hna_buff); - orig_node->hna_buff = NULL; -} - -static void hna_global_del(void *data, void *arg) -{ - kfree(data); -} - -void hna_global_free(struct bat_priv *bat_priv) -{ - if (!bat_priv->hna_global_hash) - return; - - hash_delete(bat_priv->hna_global_hash, hna_global_del, NULL); - bat_priv->hna_global_hash = NULL; -} - -struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr) -{ - struct hna_global_entry *hna_global_entry; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->hna_ghash_lock, flags); - hna_global_entry = (struct hna_global_entry *) - hash_find(bat_priv->hna_global_hash, addr); - spin_unlock_irqrestore(&bat_priv->hna_ghash_lock, flags); - - if (!hna_global_entry) - return NULL; - - return hna_global_entry->orig_node; -} diff --git a/drivers/staging/batman-adv/translation-table.h b/drivers/staging/batman-adv/translation-table.h deleted file mode 100644 index 10c4c5c319b6..000000000000 --- a/drivers/staging/batman-adv/translation-table.h +++ /dev/null @@ -1,45 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ -#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ - -#include "types.h" - -int hna_local_init(struct bat_priv *bat_priv); -void hna_local_add(struct net_device *soft_iface, uint8_t *addr); -void hna_local_remove(struct bat_priv *bat_priv, - uint8_t *addr, char *message); -int hna_local_fill_buffer(struct bat_priv *bat_priv, - unsigned char *buff, int buff_len); -int hna_local_seq_print_text(struct seq_file *seq, void *offset); -void hna_local_free(struct bat_priv *bat_priv); -int hna_global_init(struct bat_priv *bat_priv); -void hna_global_add_orig(struct bat_priv *bat_priv, - struct orig_node *orig_node, - unsigned char *hna_buff, int hna_buff_len); -int hna_global_seq_print_text(struct seq_file *seq, void *offset); -void hna_global_del_orig(struct bat_priv *bat_priv, - struct orig_node *orig_node, char *message); -void hna_global_free(struct bat_priv *bat_priv); -struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr); - -#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */ diff --git a/drivers/staging/batman-adv/types.h b/drivers/staging/batman-adv/types.h deleted file mode 100644 index f3f7366231e7..000000000000 --- a/drivers/staging/batman-adv/types.h +++ /dev/null @@ -1,241 +0,0 @@ -/* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - - - -#ifndef _NET_BATMAN_ADV_TYPES_H_ -#define _NET_BATMAN_ADV_TYPES_H_ - -#include "packet.h" -#include "bitarray.h" - -#define BAT_HEADER_LEN (sizeof(struct ethhdr) + \ - ((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \ - sizeof(struct unicast_packet) : \ - sizeof(struct bcast_packet)))) - - -struct batman_if { - struct list_head list; - int16_t if_num; - char if_status; - struct net_device *net_dev; - atomic_t seqno; - atomic_t frag_seqno; - unsigned char *packet_buff; - int packet_len; - struct kobject *hardif_obj; - atomic_t refcnt; - struct packet_type batman_adv_ptype; - struct net_device *soft_iface; -}; - -/** - * orig_node - structure for orig_list maintaining nodes of mesh - * @primary_addr: hosts primary interface address - * @last_valid: when last packet from this node was received - * @bcast_seqno_reset: time when the broadcast seqno window was reset - * @batman_seqno_reset: time when the batman seqno window was reset - * @flags: for now only VIS_SERVER flag - * @last_real_seqno: last and best known squence number - * @last_ttl: ttl of last received packet - * @last_bcast_seqno: last broadcast sequence number received by this host - * - * @candidates: how many candidates are available - * @selected: next bonding candidate - */ -struct orig_node { - uint8_t orig[ETH_ALEN]; - uint8_t primary_addr[ETH_ALEN]; - struct neigh_node *router; - TYPE_OF_WORD *bcast_own; - uint8_t *bcast_own_sum; - uint8_t tq_own; - int tq_asym_penalty; - unsigned long last_valid; - unsigned long bcast_seqno_reset; - unsigned long batman_seqno_reset; - uint8_t flags; - unsigned char *hna_buff; - int16_t hna_buff_len; - uint32_t last_real_seqno; - uint8_t last_ttl; - TYPE_OF_WORD bcast_bits[NUM_WORDS]; - uint32_t last_bcast_seqno; - struct list_head neigh_list; - struct list_head frag_list; - unsigned long last_frag_packet; - struct { - uint8_t candidates; - struct neigh_node *selected; - } bond; -}; - -/** - * neigh_node - * @last_valid: when last packet via this neighbor was received - */ -struct neigh_node { - struct list_head list; - uint8_t addr[ETH_ALEN]; - uint8_t real_packet_count; - uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE]; - uint8_t tq_index; - uint8_t tq_avg; - uint8_t last_ttl; - struct neigh_node *next_bond_candidate; - unsigned long last_valid; - TYPE_OF_WORD real_bits[NUM_WORDS]; - struct orig_node *orig_node; - struct batman_if *if_incoming; -}; - - -struct bat_priv { - atomic_t mesh_state; - struct net_device_stats stats; - atomic_t aggregation_enabled; - atomic_t bonding_enabled; - atomic_t frag_enabled; - atomic_t vis_mode; - atomic_t orig_interval; - atomic_t log_level; - atomic_t bcast_seqno; - atomic_t bcast_queue_left; - atomic_t batman_queue_left; - char num_ifaces; - struct debug_log *debug_log; - struct batman_if *primary_if; - struct kobject *mesh_obj; - struct dentry *debug_dir; - struct hlist_head forw_bat_list; - struct hlist_head forw_bcast_list; - struct list_head vis_send_list; - struct hashtable_t *orig_hash; - struct hashtable_t *hna_local_hash; - struct hashtable_t *hna_global_hash; - struct hashtable_t *vis_hash; - spinlock_t orig_hash_lock; /* protects orig_hash */ - spinlock_t forw_bat_list_lock; /* protects forw_bat_list */ - spinlock_t forw_bcast_list_lock; /* protects */ - spinlock_t hna_lhash_lock; /* protects hna_local_hash */ - spinlock_t hna_ghash_lock; /* protects hna_global_hash */ - spinlock_t vis_hash_lock; /* protects vis_hash */ - spinlock_t vis_list_lock; /* protects vis_info::recv_list */ - int16_t num_local_hna; - atomic_t hna_local_changed; - struct delayed_work hna_work; - struct delayed_work orig_work; - struct delayed_work vis_work; - struct vis_info *my_vis_info; -}; - -struct socket_client { - struct list_head queue_list; - unsigned int queue_len; - unsigned char index; - spinlock_t lock; /* protects queue_list, queue_len, index */ - wait_queue_head_t queue_wait; - struct bat_priv *bat_priv; -}; - -struct socket_packet { - struct list_head list; - size_t icmp_len; - struct icmp_packet_rr icmp_packet; -}; - -struct hna_local_entry { - uint8_t addr[ETH_ALEN]; - unsigned long last_seen; - char never_purge; -}; - -struct hna_global_entry { - uint8_t addr[ETH_ALEN]; - struct orig_node *orig_node; -}; - -/** - * forw_packet - structure for forw_list maintaining packets to be - * send/forwarded - */ -struct forw_packet { - struct hlist_node list; - unsigned long send_time; - uint8_t own; - struct sk_buff *skb; - uint16_t packet_len; - uint32_t direct_link_flags; - uint8_t num_packets; - struct delayed_work delayed_work; - struct batman_if *if_incoming; -}; - -/* While scanning for vis-entries of a particular vis-originator - * this list collects its interfaces to create a subgraph/cluster - * out of them later - */ -struct if_list_entry { - uint8_t addr[ETH_ALEN]; - bool primary; - struct hlist_node list; -}; - -struct debug_log { - char log_buff[LOG_BUF_LEN]; - unsigned long log_start; - unsigned long log_end; - spinlock_t lock; /* protects log_buff, log_start and log_end */ - wait_queue_head_t queue_wait; -}; - -struct frag_packet_list_entry { - struct list_head list; - uint16_t seqno; - struct sk_buff *skb; -}; - -struct vis_info { - unsigned long first_seen; - struct list_head recv_list; - /* list of server-neighbors we received a vis-packet - * from. we should not reply to them. */ - struct list_head send_list; - struct kref refcount; - struct bat_priv *bat_priv; - /* this packet might be part of the vis send queue. */ - struct sk_buff *skb_packet; - /* vis_info may follow here*/ -} __attribute__((packed)); - -struct vis_info_entry { - uint8_t src[ETH_ALEN]; - uint8_t dest[ETH_ALEN]; - uint8_t quality; /* quality = 0 means HNA */ -} __attribute__((packed)); - -struct recvlist_node { - struct list_head list; - uint8_t mac[ETH_ALEN]; -}; - -#endif /* _NET_BATMAN_ADV_TYPES_H_ */ diff --git a/drivers/staging/batman-adv/unicast.c b/drivers/staging/batman-adv/unicast.c deleted file mode 100644 index 0459413ff67f..000000000000 --- a/drivers/staging/batman-adv/unicast.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: - * - * Andreas Langer - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "unicast.h" -#include "send.h" -#include "soft-interface.h" -#include "hash.h" -#include "translation-table.h" -#include "routing.h" -#include "hard-interface.h" - - -struct sk_buff *merge_frag_packet(struct list_head *head, - struct frag_packet_list_entry *tfp, - struct sk_buff *skb) -{ - struct unicast_frag_packet *up = - (struct unicast_frag_packet *)skb->data; - struct sk_buff *tmp_skb; - - /* set skb to the first part and tmp_skb to the second part */ - if (up->flags & UNI_FRAG_HEAD) { - tmp_skb = tfp->skb; - } else { - tmp_skb = skb; - skb = tfp->skb; - } - - skb_pull(tmp_skb, sizeof(struct unicast_frag_packet)); - if (pskb_expand_head(skb, 0, tmp_skb->len, GFP_ATOMIC) < 0) { - /* free buffered skb, skb will be freed later */ - kfree_skb(tfp->skb); - return NULL; - } - - /* move free entry to end */ - tfp->skb = NULL; - tfp->seqno = 0; - list_move_tail(&tfp->list, head); - - memcpy(skb_put(skb, tmp_skb->len), tmp_skb->data, tmp_skb->len); - kfree_skb(tmp_skb); - return skb; -} - -void create_frag_entry(struct list_head *head, struct sk_buff *skb) -{ - struct frag_packet_list_entry *tfp; - struct unicast_frag_packet *up = - (struct unicast_frag_packet *)skb->data; - - /* free and oldest packets stand at the end */ - tfp = list_entry((head)->prev, typeof(*tfp), list); - kfree_skb(tfp->skb); - - tfp->seqno = ntohs(up->seqno); - tfp->skb = skb; - list_move(&tfp->list, head); - return; -} - -int create_frag_buffer(struct list_head *head) -{ - int i; - struct frag_packet_list_entry *tfp; - - for (i = 0; i < FRAG_BUFFER_SIZE; i++) { - tfp = kmalloc(sizeof(struct frag_packet_list_entry), - GFP_ATOMIC); - if (!tfp) { - frag_list_free(head); - return -ENOMEM; - } - tfp->skb = NULL; - tfp->seqno = 0; - INIT_LIST_HEAD(&tfp->list); - list_add(&tfp->list, head); - } - - return 0; -} - -struct frag_packet_list_entry *search_frag_packet(struct list_head *head, - struct unicast_frag_packet *up) -{ - struct frag_packet_list_entry *tfp; - struct unicast_frag_packet *tmp_up = NULL; - uint16_t search_seqno; - - if (up->flags & UNI_FRAG_HEAD) - search_seqno = ntohs(up->seqno)+1; - else - search_seqno = ntohs(up->seqno)-1; - - list_for_each_entry(tfp, head, list) { - - if (!tfp->skb) - continue; - - if (tfp->seqno == ntohs(up->seqno)) - goto mov_tail; - - tmp_up = (struct unicast_frag_packet *)tfp->skb->data; - - if (tfp->seqno == search_seqno) { - - if ((tmp_up->flags & UNI_FRAG_HEAD) != - (up->flags & UNI_FRAG_HEAD)) - return tfp; - else - goto mov_tail; - } - } - return NULL; - -mov_tail: - list_move_tail(&tfp->list, head); - return NULL; -} - -void frag_list_free(struct list_head *head) -{ - struct frag_packet_list_entry *pf, *tmp_pf; - - if (!list_empty(head)) { - - list_for_each_entry_safe(pf, tmp_pf, head, list) { - kfree_skb(pf->skb); - list_del(&pf->list); - kfree(pf); - } - } - return; -} - -static int unicast_send_frag_skb(struct sk_buff *skb, struct bat_priv *bat_priv, - struct batman_if *batman_if, uint8_t dstaddr[], - struct orig_node *orig_node) -{ - struct unicast_frag_packet *ucast_frag1, *ucast_frag2; - int hdr_len = sizeof(struct unicast_frag_packet); - struct sk_buff *frag_skb; - int data_len = skb->len; - - if (!bat_priv->primary_if) - goto dropped; - - frag_skb = dev_alloc_skb(data_len - (data_len / 2) + hdr_len); - skb_split(skb, frag_skb, data_len / 2); - - if (my_skb_head_push(frag_skb, hdr_len) < 0 || - my_skb_head_push(skb, hdr_len) < 0) - goto drop_frag; - - ucast_frag1 = (struct unicast_frag_packet *)skb->data; - ucast_frag2 = (struct unicast_frag_packet *)frag_skb->data; - - ucast_frag1->version = COMPAT_VERSION; - ucast_frag1->packet_type = BAT_UNICAST_FRAG; - ucast_frag1->ttl = TTL; - memcpy(ucast_frag1->orig, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - memcpy(ucast_frag1->dest, orig_node->orig, ETH_ALEN); - - memcpy(ucast_frag2, ucast_frag1, sizeof(struct unicast_frag_packet)); - - ucast_frag1->flags |= UNI_FRAG_HEAD; - ucast_frag2->flags &= ~UNI_FRAG_HEAD; - - ucast_frag1->seqno = htons((uint16_t)atomic_inc_return( - &batman_if->frag_seqno)); - - ucast_frag2->seqno = htons((uint16_t)atomic_inc_return( - &batman_if->frag_seqno)); - - send_skb_packet(skb, batman_if, dstaddr); - send_skb_packet(frag_skb, batman_if, dstaddr); - return 0; - -drop_frag: - kfree_skb(frag_skb); -dropped: - kfree_skb(skb); - return 1; -} - -int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) -{ - struct ethhdr *ethhdr = (struct ethhdr *)skb->data; - struct unicast_packet *unicast_packet; - struct orig_node *orig_node; - struct batman_if *batman_if; - struct neigh_node *router; - int data_len = skb->len; - uint8_t dstaddr[6]; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - /* get routing information */ - orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, - ethhdr->h_dest)); - - /* check for hna host */ - if (!orig_node) - orig_node = transtable_search(bat_priv, ethhdr->h_dest); - - router = find_router(bat_priv, orig_node, NULL); - - if (!router) - goto unlock; - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - - batman_if = router->if_incoming; - memcpy(dstaddr, router->addr, ETH_ALEN); - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - if (batman_if->if_status != IF_ACTIVE) - goto dropped; - - if (atomic_read(&bat_priv->frag_enabled) && - data_len + sizeof(struct unicast_packet) > batman_if->net_dev->mtu) - return unicast_send_frag_skb(skb, bat_priv, batman_if, - dstaddr, orig_node); - - if (my_skb_head_push(skb, sizeof(struct unicast_packet)) < 0) - goto dropped; - - unicast_packet = (struct unicast_packet *)skb->data; - - unicast_packet->version = COMPAT_VERSION; - /* batman packet type: unicast */ - unicast_packet->packet_type = BAT_UNICAST; - /* set unicast ttl */ - unicast_packet->ttl = TTL; - /* copy the destination for faster routing */ - memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN); - - send_skb_packet(skb, batman_if, dstaddr); - return 0; - -unlock: - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); -dropped: - kfree_skb(skb); - return 1; -} diff --git a/drivers/staging/batman-adv/unicast.h b/drivers/staging/batman-adv/unicast.h deleted file mode 100644 index 797369771900..000000000000 --- a/drivers/staging/batman-adv/unicast.h +++ /dev/null @@ -1,39 +0,0 @@ -/* - * Copyright (C) 2010 B.A.T.M.A.N. contributors: - * - * Andreas Langer - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_UNICAST_H_ -#define _NET_BATMAN_ADV_UNICAST_H_ - -#define FRAG_TIMEOUT 10000 /* purge frag list entrys after time in ms */ -#define FRAG_BUFFER_SIZE 6 /* number of list elements in buffer */ - -struct sk_buff *merge_frag_packet(struct list_head *head, - struct frag_packet_list_entry *tfp, - struct sk_buff *skb); - -void create_frag_entry(struct list_head *head, struct sk_buff *skb); -int create_frag_buffer(struct list_head *head); -struct frag_packet_list_entry *search_frag_packet(struct list_head *head, - struct unicast_frag_packet *up); -void frag_list_free(struct list_head *head); -int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv); - -#endif /* _NET_BATMAN_ADV_UNICAST_H_ */ diff --git a/drivers/staging/batman-adv/vis.c b/drivers/staging/batman-adv/vis.c deleted file mode 100644 index 3d2c1bccf2e6..000000000000 --- a/drivers/staging/batman-adv/vis.c +++ /dev/null @@ -1,895 +0,0 @@ -/* - * Copyright (C) 2008-2010 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "send.h" -#include "translation-table.h" -#include "vis.h" -#include "soft-interface.h" -#include "hard-interface.h" -#include "hash.h" - -#define MAX_VIS_PACKET_SIZE 1000 - -/* Returns the smallest signed integer in two's complement with the sizeof x */ -#define smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u))) - -/* Checks if a sequence number x is a predecessor/successor of y. - * they handle overflows/underflows and can correctly check for a - * predecessor/successor unless the variable sequence number has grown by - * more then 2**(bitwidth(x)-1)-1. - * This means that for a uint8_t with the maximum value 255, it would think: - * - when adding nothing - it is neither a predecessor nor a successor - * - before adding more than 127 to the starting value - it is a predecessor, - * - when adding 128 - it is neither a predecessor nor a successor, - * - after adding more than 127 to the starting value - it is a successor */ -#define seq_before(x, y) ({typeof(x) _dummy = (x - y); \ - _dummy > smallest_signed_int(_dummy); }) -#define seq_after(x, y) seq_before(y, x) - -static void start_vis_timer(struct bat_priv *bat_priv); - -/* free the info */ -static void free_info(struct kref *ref) -{ - struct vis_info *info = container_of(ref, struct vis_info, refcount); - struct bat_priv *bat_priv = info->bat_priv; - struct recvlist_node *entry, *tmp; - unsigned long flags; - - list_del_init(&info->send_list); - spin_lock_irqsave(&bat_priv->vis_list_lock, flags); - list_for_each_entry_safe(entry, tmp, &info->recv_list, list) { - list_del(&entry->list); - kfree(entry); - } - - spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags); - kfree_skb(info->skb_packet); -} - -/* Compare two vis packets, used by the hashing algorithm */ -static int vis_info_cmp(void *data1, void *data2) -{ - struct vis_info *d1, *d2; - struct vis_packet *p1, *p2; - d1 = data1; - d2 = data2; - p1 = (struct vis_packet *)d1->skb_packet->data; - p2 = (struct vis_packet *)d2->skb_packet->data; - return compare_orig(p1->vis_orig, p2->vis_orig); -} - -/* hash function to choose an entry in a hash table of given size */ -/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */ -static int vis_info_choose(void *data, int size) -{ - struct vis_info *vis_info = data; - struct vis_packet *packet; - unsigned char *key; - uint32_t hash = 0; - size_t i; - - packet = (struct vis_packet *)vis_info->skb_packet->data; - key = packet->vis_orig; - for (i = 0; i < ETH_ALEN; i++) { - hash += key[i]; - hash += (hash << 10); - hash ^= (hash >> 6); - } - - hash += (hash << 3); - hash ^= (hash >> 11); - hash += (hash << 15); - - return hash % size; -} - -/* insert interface to the list of interfaces of one originator, if it - * does not already exist in the list */ -static void vis_data_insert_interface(const uint8_t *interface, - struct hlist_head *if_list, - bool primary) -{ - struct if_list_entry *entry; - struct hlist_node *pos; - - hlist_for_each_entry(entry, pos, if_list, list) { - if (compare_orig(entry->addr, (void *)interface)) - return; - } - - /* its a new address, add it to the list */ - entry = kmalloc(sizeof(*entry), GFP_ATOMIC); - if (!entry) - return; - memcpy(entry->addr, interface, ETH_ALEN); - entry->primary = primary; - hlist_add_head(&entry->list, if_list); -} - -static ssize_t vis_data_read_prim_sec(char *buff, struct hlist_head *if_list) -{ - struct if_list_entry *entry; - struct hlist_node *pos; - size_t len = 0; - - hlist_for_each_entry(entry, pos, if_list, list) { - if (entry->primary) - len += sprintf(buff + len, "PRIMARY, "); - else { - len += sprintf(buff + len, "SEC %pM, ", entry->addr); - } - } - - return len; -} - -static size_t vis_data_count_prim_sec(struct hlist_head *if_list) -{ - struct if_list_entry *entry; - struct hlist_node *pos; - size_t count = 0; - - hlist_for_each_entry(entry, pos, if_list, list) { - if (entry->primary) - count += 9; - else - count += 23; - } - - return count; -} - -/* read an entry */ -static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry, - uint8_t *src, bool primary) -{ - /* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */ - if (primary && entry->quality == 0) - return sprintf(buff, "HNA %pM, ", entry->dest); - else if (compare_orig(entry->src, src)) - return sprintf(buff, "TQ %pM %d, ", entry->dest, - entry->quality); - - return 0; -} - -int vis_seq_print_text(struct seq_file *seq, void *offset) -{ - HASHIT(hashit); - HASHIT(hashit_count); - struct vis_info *info; - struct vis_packet *packet; - struct vis_info_entry *entries; - struct net_device *net_dev = (struct net_device *)seq->private; - struct bat_priv *bat_priv = netdev_priv(net_dev); - HLIST_HEAD(vis_if_list); - struct if_list_entry *entry; - struct hlist_node *pos, *n; - int i; - unsigned long flags; - int vis_server = atomic_read(&bat_priv->vis_mode); - size_t buff_pos, buf_size; - char *buff; - - if ((!bat_priv->primary_if) || - (vis_server == VIS_TYPE_CLIENT_UPDATE)) - return 0; - - buf_size = 1; - /* Estimate length */ - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - while (hash_iterate(bat_priv->vis_hash, &hashit_count)) { - info = hashit_count.bucket->data; - packet = (struct vis_packet *)info->skb_packet->data; - entries = (struct vis_info_entry *) - ((char *)packet + sizeof(struct vis_packet)); - - for (i = 0; i < packet->entries; i++) { - if (entries[i].quality == 0) - continue; - vis_data_insert_interface(entries[i].src, &vis_if_list, - compare_orig(entries[i].src, packet->vis_orig)); - } - - hlist_for_each_entry(entry, pos, &vis_if_list, list) { - buf_size += 18 + 26 * packet->entries; - - /* add primary/secondary records */ - if (compare_orig(entry->addr, packet->vis_orig)) - buf_size += - vis_data_count_prim_sec(&vis_if_list); - - buf_size += 1; - } - - hlist_for_each_entry_safe(entry, pos, n, &vis_if_list, list) { - hlist_del(&entry->list); - kfree(entry); - } - } - - buff = kmalloc(buf_size, GFP_ATOMIC); - if (!buff) { - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); - return -ENOMEM; - } - buff[0] = '\0'; - buff_pos = 0; - - while (hash_iterate(bat_priv->vis_hash, &hashit)) { - info = hashit.bucket->data; - packet = (struct vis_packet *)info->skb_packet->data; - entries = (struct vis_info_entry *) - ((char *)packet + sizeof(struct vis_packet)); - - for (i = 0; i < packet->entries; i++) { - if (entries[i].quality == 0) - continue; - vis_data_insert_interface(entries[i].src, &vis_if_list, - compare_orig(entries[i].src, packet->vis_orig)); - } - - hlist_for_each_entry(entry, pos, &vis_if_list, list) { - buff_pos += sprintf(buff + buff_pos, "%pM,", - entry->addr); - - for (i = 0; i < packet->entries; i++) - buff_pos += vis_data_read_entry(buff + buff_pos, - &entries[i], - entry->addr, - entry->primary); - - /* add primary/secondary records */ - if (compare_orig(entry->addr, packet->vis_orig)) - buff_pos += - vis_data_read_prim_sec(buff + buff_pos, - &vis_if_list); - - buff_pos += sprintf(buff + buff_pos, "\n"); - } - - hlist_for_each_entry_safe(entry, pos, n, &vis_if_list, list) { - hlist_del(&entry->list); - kfree(entry); - } - } - - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); - - seq_printf(seq, "%s", buff); - kfree(buff); - - return 0; -} - -/* add the info packet to the send list, if it was not - * already linked in. */ -static void send_list_add(struct bat_priv *bat_priv, struct vis_info *info) -{ - if (list_empty(&info->send_list)) { - kref_get(&info->refcount); - list_add_tail(&info->send_list, &bat_priv->vis_send_list); - } -} - -/* delete the info packet from the send list, if it was - * linked in. */ -static void send_list_del(struct vis_info *info) -{ - if (!list_empty(&info->send_list)) { - list_del_init(&info->send_list); - kref_put(&info->refcount, free_info); - } -} - -/* tries to add one entry to the receive list. */ -static void recv_list_add(struct bat_priv *bat_priv, - struct list_head *recv_list, char *mac) -{ - struct recvlist_node *entry; - unsigned long flags; - - entry = kmalloc(sizeof(struct recvlist_node), GFP_ATOMIC); - if (!entry) - return; - - memcpy(entry->mac, mac, ETH_ALEN); - spin_lock_irqsave(&bat_priv->vis_list_lock, flags); - list_add_tail(&entry->list, recv_list); - spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags); -} - -/* returns 1 if this mac is in the recv_list */ -static int recv_list_is_in(struct bat_priv *bat_priv, - struct list_head *recv_list, char *mac) -{ - struct recvlist_node *entry; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->vis_list_lock, flags); - list_for_each_entry(entry, recv_list, list) { - if (memcmp(entry->mac, mac, ETH_ALEN) == 0) { - spin_unlock_irqrestore(&bat_priv->vis_list_lock, - flags); - return 1; - } - } - spin_unlock_irqrestore(&bat_priv->vis_list_lock, flags); - return 0; -} - -/* try to add the packet to the vis_hash. return NULL if invalid (e.g. too old, - * broken.. ). vis hash must be locked outside. is_new is set when the packet - * is newer than old entries in the hash. */ -static struct vis_info *add_packet(struct bat_priv *bat_priv, - struct vis_packet *vis_packet, - int vis_info_len, int *is_new, - int make_broadcast) -{ - struct vis_info *info, *old_info; - struct vis_packet *search_packet, *old_packet; - struct vis_info search_elem; - struct vis_packet *packet; - - *is_new = 0; - /* sanity check */ - if (!bat_priv->vis_hash) - return NULL; - - /* see if the packet is already in vis_hash */ - search_elem.skb_packet = dev_alloc_skb(sizeof(struct vis_packet)); - if (!search_elem.skb_packet) - return NULL; - search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet, - sizeof(struct vis_packet)); - - memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN); - old_info = hash_find(bat_priv->vis_hash, &search_elem); - kfree_skb(search_elem.skb_packet); - - if (old_info != NULL) { - old_packet = (struct vis_packet *)old_info->skb_packet->data; - if (!seq_after(ntohl(vis_packet->seqno), - ntohl(old_packet->seqno))) { - if (old_packet->seqno == vis_packet->seqno) { - recv_list_add(bat_priv, &old_info->recv_list, - vis_packet->sender_orig); - return old_info; - } else { - /* newer packet is already in hash. */ - return NULL; - } - } - /* remove old entry */ - hash_remove(bat_priv->vis_hash, old_info); - send_list_del(old_info); - kref_put(&old_info->refcount, free_info); - } - - info = kmalloc(sizeof(struct vis_info), GFP_ATOMIC); - if (!info) - return NULL; - - info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) + - vis_info_len + sizeof(struct ethhdr)); - if (!info->skb_packet) { - kfree(info); - return NULL; - } - skb_reserve(info->skb_packet, sizeof(struct ethhdr)); - packet = (struct vis_packet *)skb_put(info->skb_packet, - sizeof(struct vis_packet) + - vis_info_len); - - kref_init(&info->refcount); - INIT_LIST_HEAD(&info->send_list); - INIT_LIST_HEAD(&info->recv_list); - info->first_seen = jiffies; - info->bat_priv = bat_priv; - memcpy(packet, vis_packet, sizeof(struct vis_packet) + vis_info_len); - - /* initialize and add new packet. */ - *is_new = 1; - - /* Make it a broadcast packet, if required */ - if (make_broadcast) - memcpy(packet->target_orig, broadcast_addr, ETH_ALEN); - - /* repair if entries is longer than packet. */ - if (packet->entries * sizeof(struct vis_info_entry) > vis_info_len) - packet->entries = vis_info_len / sizeof(struct vis_info_entry); - - recv_list_add(bat_priv, &info->recv_list, packet->sender_orig); - - /* try to add it */ - if (hash_add(bat_priv->vis_hash, info) < 0) { - /* did not work (for some reason) */ - kref_put(&old_info->refcount, free_info); - info = NULL; - } - - return info; -} - -/* handle the server sync packet, forward if needed. */ -void receive_server_sync_packet(struct bat_priv *bat_priv, - struct vis_packet *vis_packet, - int vis_info_len) -{ - struct vis_info *info; - int is_new, make_broadcast; - unsigned long flags; - int vis_server = atomic_read(&bat_priv->vis_mode); - - make_broadcast = (vis_server == VIS_TYPE_SERVER_SYNC); - - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - info = add_packet(bat_priv, vis_packet, vis_info_len, - &is_new, make_broadcast); - if (!info) - goto end; - - /* only if we are server ourselves and packet is newer than the one in - * hash.*/ - if (vis_server == VIS_TYPE_SERVER_SYNC && is_new) - send_list_add(bat_priv, info); -end: - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); -} - -/* handle an incoming client update packet and schedule forward if needed. */ -void receive_client_update_packet(struct bat_priv *bat_priv, - struct vis_packet *vis_packet, - int vis_info_len) -{ - struct vis_info *info; - struct vis_packet *packet; - int is_new; - unsigned long flags; - int vis_server = atomic_read(&bat_priv->vis_mode); - int are_target = 0; - - /* clients shall not broadcast. */ - if (is_bcast(vis_packet->target_orig)) - return; - - /* Are we the target for this VIS packet? */ - if (vis_server == VIS_TYPE_SERVER_SYNC && - is_my_mac(vis_packet->target_orig)) - are_target = 1; - - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - info = add_packet(bat_priv, vis_packet, vis_info_len, - &is_new, are_target); - - if (!info) - goto end; - /* note that outdated packets will be dropped at this point. */ - - packet = (struct vis_packet *)info->skb_packet->data; - - /* send only if we're the target server or ... */ - if (are_target && is_new) { - packet->vis_type = VIS_TYPE_SERVER_SYNC; /* upgrade! */ - send_list_add(bat_priv, info); - - /* ... we're not the recipient (and thus need to forward). */ - } else if (!is_my_mac(packet->target_orig)) { - send_list_add(bat_priv, info); - } - -end: - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); -} - -/* Walk the originators and find the VIS server with the best tq. Set the packet - * address to its address and return the best_tq. - * - * Must be called with the originator hash locked */ -static int find_best_vis_server(struct bat_priv *bat_priv, - struct vis_info *info) -{ - HASHIT(hashit); - struct orig_node *orig_node; - struct vis_packet *packet; - int best_tq = -1; - - packet = (struct vis_packet *)info->skb_packet->data; - - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - orig_node = hashit.bucket->data; - if ((orig_node) && (orig_node->router) && - (orig_node->flags & VIS_SERVER) && - (orig_node->router->tq_avg > best_tq)) { - best_tq = orig_node->router->tq_avg; - memcpy(packet->target_orig, orig_node->orig, ETH_ALEN); - } - } - return best_tq; -} - -/* Return true if the vis packet is full. */ -static bool vis_packet_full(struct vis_info *info) -{ - struct vis_packet *packet; - packet = (struct vis_packet *)info->skb_packet->data; - - if (MAX_VIS_PACKET_SIZE / sizeof(struct vis_info_entry) - < packet->entries + 1) - return true; - return false; -} - -/* generates a packet of own vis data, - * returns 0 on success, -1 if no packet could be generated */ -static int generate_vis_packet(struct bat_priv *bat_priv) -{ - HASHIT(hashit_local); - HASHIT(hashit_global); - struct orig_node *orig_node; - struct vis_info *info = (struct vis_info *)bat_priv->my_vis_info; - struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data; - struct vis_info_entry *entry; - struct hna_local_entry *hna_local_entry; - int best_tq = -1; - unsigned long flags; - - info->first_seen = jiffies; - packet->vis_type = atomic_read(&bat_priv->vis_mode); - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - memcpy(packet->target_orig, broadcast_addr, ETH_ALEN); - packet->ttl = TTL; - packet->seqno = htonl(ntohl(packet->seqno) + 1); - packet->entries = 0; - skb_trim(info->skb_packet, sizeof(struct vis_packet)); - - if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) { - best_tq = find_best_vis_server(bat_priv, info); - - if (best_tq < 0) { - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, - flags); - return -1; - } - } - - while (hash_iterate(bat_priv->orig_hash, &hashit_global)) { - orig_node = hashit_global.bucket->data; - - if (!orig_node->router) - continue; - - if (!compare_orig(orig_node->router->addr, orig_node->orig)) - continue; - - if (orig_node->router->if_incoming->if_status != IF_ACTIVE) - continue; - - if (orig_node->router->tq_avg < 1) - continue; - - /* fill one entry into buffer. */ - entry = (struct vis_info_entry *) - skb_put(info->skb_packet, sizeof(*entry)); - memcpy(entry->src, - orig_node->router->if_incoming->net_dev->dev_addr, - ETH_ALEN); - memcpy(entry->dest, orig_node->orig, ETH_ALEN); - entry->quality = orig_node->router->tq_avg; - packet->entries++; - - if (vis_packet_full(info)) { - spin_unlock_irqrestore( - &bat_priv->orig_hash_lock, flags); - return 0; - } - } - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - spin_lock_irqsave(&bat_priv->hna_lhash_lock, flags); - while (hash_iterate(bat_priv->hna_local_hash, &hashit_local)) { - hna_local_entry = hashit_local.bucket->data; - entry = (struct vis_info_entry *)skb_put(info->skb_packet, - sizeof(*entry)); - memset(entry->src, 0, ETH_ALEN); - memcpy(entry->dest, hna_local_entry->addr, ETH_ALEN); - entry->quality = 0; /* 0 means HNA */ - packet->entries++; - - if (vis_packet_full(info)) { - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, - flags); - return 0; - } - } - - spin_unlock_irqrestore(&bat_priv->hna_lhash_lock, flags); - return 0; -} - -/* free old vis packets. Must be called with this vis_hash_lock - * held */ -static void purge_vis_packets(struct bat_priv *bat_priv) -{ - HASHIT(hashit); - struct vis_info *info; - - while (hash_iterate(bat_priv->vis_hash, &hashit)) { - info = hashit.bucket->data; - - /* never purge own data. */ - if (info == bat_priv->my_vis_info) - continue; - - if (time_after(jiffies, - info->first_seen + VIS_TIMEOUT * HZ)) { - hash_remove_bucket(bat_priv->vis_hash, &hashit); - send_list_del(info); - kref_put(&info->refcount, free_info); - } - } -} - -static void broadcast_vis_packet(struct bat_priv *bat_priv, - struct vis_info *info) -{ - HASHIT(hashit); - struct orig_node *orig_node; - struct vis_packet *packet; - struct sk_buff *skb; - unsigned long flags; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN]; - - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - packet = (struct vis_packet *)info->skb_packet->data; - - /* send to all routers in range. */ - while (hash_iterate(bat_priv->orig_hash, &hashit)) { - orig_node = hashit.bucket->data; - - /* if it's a vis server and reachable, send it. */ - if ((!orig_node) || (!orig_node->router)) - continue; - if (!(orig_node->flags & VIS_SERVER)) - continue; - /* don't send it if we already received the packet from - * this node. */ - if (recv_list_is_in(bat_priv, &info->recv_list, - orig_node->orig)) - continue; - - memcpy(packet->target_orig, orig_node->orig, ETH_ALEN); - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - skb = skb_clone(info->skb_packet, GFP_ATOMIC); - if (skb) - send_skb_packet(skb, batman_if, dstaddr); - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - - } - - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); -} - -static void unicast_vis_packet(struct bat_priv *bat_priv, - struct vis_info *info) -{ - struct orig_node *orig_node; - struct sk_buff *skb; - struct vis_packet *packet; - unsigned long flags; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN]; - - spin_lock_irqsave(&bat_priv->orig_hash_lock, flags); - packet = (struct vis_packet *)info->skb_packet->data; - orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, - packet->target_orig)); - - if ((!orig_node) || (!orig_node->router)) - goto out; - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); - - skb = skb_clone(info->skb_packet, GFP_ATOMIC); - if (skb) - send_skb_packet(skb, batman_if, dstaddr); - - return; - -out: - spin_unlock_irqrestore(&bat_priv->orig_hash_lock, flags); -} - -/* only send one vis packet. called from send_vis_packets() */ -static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info) -{ - struct vis_packet *packet; - - packet = (struct vis_packet *)info->skb_packet->data; - if (packet->ttl < 2) { - pr_debug("Error - can't send vis packet: ttl exceeded\n"); - return; - } - - memcpy(packet->sender_orig, bat_priv->primary_if->net_dev->dev_addr, - ETH_ALEN); - packet->ttl--; - - if (is_bcast(packet->target_orig)) - broadcast_vis_packet(bat_priv, info); - else - unicast_vis_packet(bat_priv, info); - packet->ttl++; /* restore TTL */ -} - -/* called from timer; send (and maybe generate) vis packet. */ -static void send_vis_packets(struct work_struct *work) -{ - struct delayed_work *delayed_work = - container_of(work, struct delayed_work, work); - struct bat_priv *bat_priv = - container_of(delayed_work, struct bat_priv, vis_work); - struct vis_info *info, *temp; - unsigned long flags; - - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - purge_vis_packets(bat_priv); - - if (generate_vis_packet(bat_priv) == 0) { - /* schedule if generation was successful */ - send_list_add(bat_priv, bat_priv->my_vis_info); - } - - list_for_each_entry_safe(info, temp, &bat_priv->vis_send_list, - send_list) { - - kref_get(&info->refcount); - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); - - if (bat_priv->primary_if) - send_vis_packet(bat_priv, info); - - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - send_list_del(info); - kref_put(&info->refcount, free_info); - } - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); - start_vis_timer(bat_priv); -} - -/* init the vis server. this may only be called when if_list is already - * initialized (e.g. bat0 is initialized, interfaces have been added) */ -int vis_init(struct bat_priv *bat_priv) -{ - struct vis_packet *packet; - unsigned long flags; - - if (bat_priv->vis_hash) - return 1; - - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - - bat_priv->vis_hash = hash_new(256, vis_info_cmp, vis_info_choose); - if (!bat_priv->vis_hash) { - pr_err("Can't initialize vis_hash\n"); - goto err; - } - - bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC); - if (!bat_priv->my_vis_info) { - pr_err("Can't initialize vis packet\n"); - goto err; - } - - bat_priv->my_vis_info->skb_packet = dev_alloc_skb( - sizeof(struct vis_packet) + - MAX_VIS_PACKET_SIZE + - sizeof(struct ethhdr)); - if (!bat_priv->my_vis_info->skb_packet) - goto free_info; - - skb_reserve(bat_priv->my_vis_info->skb_packet, sizeof(struct ethhdr)); - packet = (struct vis_packet *)skb_put( - bat_priv->my_vis_info->skb_packet, - sizeof(struct vis_packet)); - - /* prefill the vis info */ - bat_priv->my_vis_info->first_seen = jiffies - - msecs_to_jiffies(VIS_INTERVAL); - INIT_LIST_HEAD(&bat_priv->my_vis_info->recv_list); - INIT_LIST_HEAD(&bat_priv->my_vis_info->send_list); - kref_init(&bat_priv->my_vis_info->refcount); - bat_priv->my_vis_info->bat_priv = bat_priv; - packet->version = COMPAT_VERSION; - packet->packet_type = BAT_VIS; - packet->ttl = TTL; - packet->seqno = 0; - packet->entries = 0; - - INIT_LIST_HEAD(&bat_priv->vis_send_list); - - if (hash_add(bat_priv->vis_hash, bat_priv->my_vis_info) < 0) { - pr_err("Can't add own vis packet into hash\n"); - /* not in hash, need to remove it manually. */ - kref_put(&bat_priv->my_vis_info->refcount, free_info); - goto err; - } - - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); - start_vis_timer(bat_priv); - return 1; - -free_info: - kfree(bat_priv->my_vis_info); - bat_priv->my_vis_info = NULL; -err: - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); - vis_quit(bat_priv); - return 0; -} - -/* Decrease the reference count on a hash item info */ -static void free_info_ref(void *data, void *arg) -{ - struct vis_info *info = data; - - send_list_del(info); - kref_put(&info->refcount, free_info); -} - -/* shutdown vis-server */ -void vis_quit(struct bat_priv *bat_priv) -{ - unsigned long flags; - if (!bat_priv->vis_hash) - return; - - cancel_delayed_work_sync(&bat_priv->vis_work); - - spin_lock_irqsave(&bat_priv->vis_hash_lock, flags); - /* properly remove, kill timers ... */ - hash_delete(bat_priv->vis_hash, free_info_ref, NULL); - bat_priv->vis_hash = NULL; - bat_priv->my_vis_info = NULL; - spin_unlock_irqrestore(&bat_priv->vis_hash_lock, flags); -} - -/* schedule packets for (re)transmission */ -static void start_vis_timer(struct bat_priv *bat_priv) -{ - INIT_DELAYED_WORK(&bat_priv->vis_work, send_vis_packets); - queue_delayed_work(bat_event_workqueue, &bat_priv->vis_work, - msecs_to_jiffies(VIS_INTERVAL)); -} diff --git a/drivers/staging/batman-adv/vis.h b/drivers/staging/batman-adv/vis.h deleted file mode 100644 index 2c3b33089a9b..000000000000 --- a/drivers/staging/batman-adv/vis.h +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright (C) 2008-2010 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich, Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#ifndef _NET_BATMAN_ADV_VIS_H_ -#define _NET_BATMAN_ADV_VIS_H_ - -#define VIS_TIMEOUT 200 /* timeout of vis packets in seconds */ - -int vis_seq_print_text(struct seq_file *seq, void *offset); -void receive_server_sync_packet(struct bat_priv *bat_priv, - struct vis_packet *vis_packet, - int vis_info_len); -void receive_client_update_packet(struct bat_priv *bat_priv, - struct vis_packet *vis_packet, - int vis_info_len); -int vis_init(struct bat_priv *bat_priv); -void vis_quit(struct bat_priv *bat_priv); - -#endif /* _NET_BATMAN_ADV_VIS_H_ */ |