diff options
Diffstat (limited to 'drivers/staging/batman-adv/originator.c')
-rw-r--r-- | drivers/staging/batman-adv/originator.c | 533 |
1 files changed, 0 insertions, 533 deletions
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; -} |