Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1 | /* |
Sven Eckelmann | 64afe35 | 2011-01-27 10:38:15 +0100 | [diff] [blame] | 2 | * Copyright (C) 2009-2011 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 3 | * |
| 4 | * Marek Lindner, Simon Wunderlich |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of version 2 of the GNU General Public |
| 8 | * License as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 18 | * 02110-1301, USA |
| 19 | * |
| 20 | */ |
| 21 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 22 | #include "main.h" |
| 23 | #include "originator.h" |
| 24 | #include "hash.h" |
| 25 | #include "translation-table.h" |
| 26 | #include "routing.h" |
| 27 | #include "gateway_client.h" |
| 28 | #include "hard-interface.h" |
| 29 | #include "unicast.h" |
| 30 | #include "soft-interface.h" |
| 31 | |
| 32 | static void purge_orig(struct work_struct *work); |
| 33 | |
| 34 | static void start_purge_timer(struct bat_priv *bat_priv) |
| 35 | { |
| 36 | INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig); |
| 37 | queue_delayed_work(bat_event_workqueue, &bat_priv->orig_work, 1 * HZ); |
| 38 | } |
| 39 | |
| 40 | int originator_init(struct bat_priv *bat_priv) |
| 41 | { |
| 42 | if (bat_priv->orig_hash) |
| 43 | return 1; |
| 44 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 45 | bat_priv->orig_hash = hash_new(1024); |
| 46 | |
| 47 | if (!bat_priv->orig_hash) |
| 48 | goto err; |
| 49 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 50 | start_purge_timer(bat_priv); |
| 51 | return 1; |
| 52 | |
| 53 | err: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 54 | return 0; |
| 55 | } |
| 56 | |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 57 | void neigh_node_free_ref(struct neigh_node *neigh_node) |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 58 | { |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 59 | if (atomic_dec_and_test(&neigh_node->refcount)) |
Paul E. McKenney | ae179ae | 2011-05-01 23:27:50 -0700 | [diff] [blame] | 60 | kfree_rcu(neigh_node, rcu); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 61 | } |
| 62 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 63 | /* increases the refcounter of a found router */ |
| 64 | struct neigh_node *orig_node_get_router(struct orig_node *orig_node) |
| 65 | { |
| 66 | struct neigh_node *router; |
| 67 | |
| 68 | rcu_read_lock(); |
| 69 | router = rcu_dereference(orig_node->router); |
| 70 | |
| 71 | if (router && !atomic_inc_not_zero(&router->refcount)) |
| 72 | router = NULL; |
| 73 | |
| 74 | rcu_read_unlock(); |
| 75 | return router; |
| 76 | } |
| 77 | |
Marek Lindner | a8e7f4b | 2010-12-12 21:57:10 +0000 | [diff] [blame] | 78 | struct neigh_node *create_neighbor(struct orig_node *orig_node, |
| 79 | struct orig_node *orig_neigh_node, |
Sven Eckelmann | 747e422 | 2011-05-14 23:14:50 +0200 | [diff] [blame^] | 80 | const uint8_t *neigh, |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 81 | struct hard_iface *if_incoming) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 82 | { |
| 83 | struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); |
| 84 | struct neigh_node *neigh_node; |
| 85 | |
| 86 | bat_dbg(DBG_BATMAN, bat_priv, |
| 87 | "Creating new last-hop neighbor of originator\n"); |
| 88 | |
| 89 | neigh_node = kzalloc(sizeof(struct neigh_node), GFP_ATOMIC); |
| 90 | if (!neigh_node) |
| 91 | return NULL; |
| 92 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 93 | INIT_HLIST_NODE(&neigh_node->list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 94 | INIT_LIST_HEAD(&neigh_node->bonding_list); |
Linus Lüssing | 6800390 | 2011-03-14 22:43:40 +0000 | [diff] [blame] | 95 | spin_lock_init(&neigh_node->tq_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 96 | |
| 97 | memcpy(neigh_node->addr, neigh, ETH_ALEN); |
| 98 | neigh_node->orig_node = orig_neigh_node; |
| 99 | neigh_node->if_incoming = if_incoming; |
Marek Lindner | 1605d0d | 2011-02-18 12:28:11 +0000 | [diff] [blame] | 100 | |
| 101 | /* extra reference for return */ |
| 102 | atomic_set(&neigh_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 103 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 104 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 105 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); |
| 106 | spin_unlock_bh(&orig_node->neigh_list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 107 | return neigh_node; |
| 108 | } |
| 109 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 110 | static void orig_node_free_rcu(struct rcu_head *rcu) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 111 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 112 | struct hlist_node *node, *node_tmp; |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 113 | struct neigh_node *neigh_node, *tmp_neigh_node; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 114 | struct orig_node *orig_node; |
| 115 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 116 | orig_node = container_of(rcu, struct orig_node, rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 117 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 118 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 119 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 120 | /* for all bonding members ... */ |
| 121 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, |
| 122 | &orig_node->bond_list, bonding_list) { |
| 123 | list_del_rcu(&neigh_node->bonding_list); |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 124 | neigh_node_free_ref(neigh_node); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 125 | } |
| 126 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 127 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 128 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 129 | &orig_node->neigh_list, list) { |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 130 | hlist_del_rcu(&neigh_node->list); |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 131 | neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 132 | } |
| 133 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 134 | spin_unlock_bh(&orig_node->neigh_list_lock); |
| 135 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 136 | frag_list_free(&orig_node->frag_list); |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 137 | tt_global_del_orig(orig_node->bat_priv, orig_node, |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 138 | "originator timed out"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 139 | |
| 140 | kfree(orig_node->bcast_own); |
| 141 | kfree(orig_node->bcast_own_sum); |
| 142 | kfree(orig_node); |
| 143 | } |
| 144 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 145 | void orig_node_free_ref(struct orig_node *orig_node) |
| 146 | { |
| 147 | if (atomic_dec_and_test(&orig_node->refcount)) |
| 148 | call_rcu(&orig_node->rcu, orig_node_free_rcu); |
| 149 | } |
| 150 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 151 | void originator_free(struct bat_priv *bat_priv) |
| 152 | { |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 153 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 154 | struct hlist_node *node, *node_tmp; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 155 | struct hlist_head *head; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 156 | spinlock_t *list_lock; /* spinlock to protect write access */ |
| 157 | struct orig_node *orig_node; |
| 158 | int i; |
| 159 | |
| 160 | if (!hash) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 161 | return; |
| 162 | |
| 163 | cancel_delayed_work_sync(&bat_priv->orig_work); |
| 164 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 165 | bat_priv->orig_hash = NULL; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 166 | |
| 167 | for (i = 0; i < hash->size; i++) { |
| 168 | head = &hash->table[i]; |
| 169 | list_lock = &hash->list_locks[i]; |
| 170 | |
| 171 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 172 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 173 | head, hash_entry) { |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 174 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 175 | hlist_del_rcu(node); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 176 | orig_node_free_ref(orig_node); |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 177 | } |
| 178 | spin_unlock_bh(list_lock); |
| 179 | } |
| 180 | |
| 181 | hash_destroy(hash); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | /* this function finds or creates an originator entry for the given |
| 185 | * address if it does not exits */ |
Sven Eckelmann | 747e422 | 2011-05-14 23:14:50 +0200 | [diff] [blame^] | 186 | struct orig_node *get_orig_node(struct bat_priv *bat_priv, const uint8_t *addr) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 187 | { |
| 188 | struct orig_node *orig_node; |
| 189 | int size; |
| 190 | int hash_added; |
| 191 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 192 | orig_node = orig_hash_find(bat_priv, addr); |
| 193 | if (orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 194 | return orig_node; |
| 195 | |
| 196 | bat_dbg(DBG_BATMAN, bat_priv, |
| 197 | "Creating new originator: %pM\n", addr); |
| 198 | |
| 199 | orig_node = kzalloc(sizeof(struct orig_node), GFP_ATOMIC); |
| 200 | if (!orig_node) |
| 201 | return NULL; |
| 202 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 203 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 204 | INIT_LIST_HEAD(&orig_node->bond_list); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 205 | spin_lock_init(&orig_node->ogm_cnt_lock); |
Marek Lindner | f3e0008 | 2011-01-25 21:52:11 +0000 | [diff] [blame] | 206 | spin_lock_init(&orig_node->bcast_seqno_lock); |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 207 | spin_lock_init(&orig_node->neigh_list_lock); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 208 | |
| 209 | /* extra reference for return */ |
| 210 | atomic_set(&orig_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 211 | |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 212 | orig_node->bat_priv = bat_priv; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 213 | memcpy(orig_node->orig, addr, ETH_ALEN); |
| 214 | orig_node->router = NULL; |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 215 | orig_node->tt_buff = NULL; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 216 | orig_node->bcast_seqno_reset = jiffies - 1 |
| 217 | - msecs_to_jiffies(RESET_PROTECTION_MS); |
| 218 | orig_node->batman_seqno_reset = jiffies - 1 |
| 219 | - msecs_to_jiffies(RESET_PROTECTION_MS); |
| 220 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 221 | atomic_set(&orig_node->bond_candidates, 0); |
| 222 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 223 | size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS; |
| 224 | |
| 225 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); |
| 226 | if (!orig_node->bcast_own) |
| 227 | goto free_orig_node; |
| 228 | |
| 229 | size = bat_priv->num_ifaces * sizeof(uint8_t); |
| 230 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); |
| 231 | |
| 232 | INIT_LIST_HEAD(&orig_node->frag_list); |
| 233 | orig_node->last_frag_packet = 0; |
| 234 | |
| 235 | if (!orig_node->bcast_own_sum) |
| 236 | goto free_bcast_own; |
| 237 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 238 | hash_added = hash_add(bat_priv->orig_hash, compare_orig, |
| 239 | choose_orig, orig_node, &orig_node->hash_entry); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 240 | if (hash_added < 0) |
| 241 | goto free_bcast_own_sum; |
| 242 | |
| 243 | return orig_node; |
| 244 | free_bcast_own_sum: |
| 245 | kfree(orig_node->bcast_own_sum); |
| 246 | free_bcast_own: |
| 247 | kfree(orig_node->bcast_own); |
| 248 | free_orig_node: |
| 249 | kfree(orig_node); |
| 250 | return NULL; |
| 251 | } |
| 252 | |
| 253 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, |
| 254 | struct orig_node *orig_node, |
| 255 | struct neigh_node **best_neigh_node) |
| 256 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 257 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 258 | struct neigh_node *neigh_node; |
| 259 | bool neigh_purged = false; |
| 260 | |
| 261 | *best_neigh_node = NULL; |
| 262 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 263 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 264 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 265 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 266 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 267 | &orig_node->neigh_list, list) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 268 | |
| 269 | if ((time_after(jiffies, |
| 270 | neigh_node->last_valid + PURGE_TIMEOUT * HZ)) || |
| 271 | (neigh_node->if_incoming->if_status == IF_INACTIVE) || |
Marek Lindner | 1a241a5 | 2011-01-19 19:16:10 +0000 | [diff] [blame] | 272 | (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) || |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 273 | (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { |
| 274 | |
Marek Lindner | 1a241a5 | 2011-01-19 19:16:10 +0000 | [diff] [blame] | 275 | if ((neigh_node->if_incoming->if_status == |
| 276 | IF_INACTIVE) || |
| 277 | (neigh_node->if_incoming->if_status == |
| 278 | IF_NOT_IN_USE) || |
| 279 | (neigh_node->if_incoming->if_status == |
| 280 | IF_TO_BE_REMOVED)) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 281 | bat_dbg(DBG_BATMAN, bat_priv, |
| 282 | "neighbor purge: originator %pM, " |
| 283 | "neighbor: %pM, iface: %s\n", |
| 284 | orig_node->orig, neigh_node->addr, |
| 285 | neigh_node->if_incoming->net_dev->name); |
| 286 | else |
| 287 | bat_dbg(DBG_BATMAN, bat_priv, |
| 288 | "neighbor timeout: originator %pM, " |
| 289 | "neighbor: %pM, last_valid: %lu\n", |
| 290 | orig_node->orig, neigh_node->addr, |
| 291 | (neigh_node->last_valid / HZ)); |
| 292 | |
| 293 | neigh_purged = true; |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 294 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 295 | hlist_del_rcu(&neigh_node->list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 296 | bonding_candidate_del(orig_node, neigh_node); |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 297 | neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 298 | } else { |
| 299 | if ((!*best_neigh_node) || |
| 300 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) |
| 301 | *best_neigh_node = neigh_node; |
| 302 | } |
| 303 | } |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 304 | |
| 305 | spin_unlock_bh(&orig_node->neigh_list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 306 | return neigh_purged; |
| 307 | } |
| 308 | |
| 309 | static bool purge_orig_node(struct bat_priv *bat_priv, |
| 310 | struct orig_node *orig_node) |
| 311 | { |
| 312 | struct neigh_node *best_neigh_node; |
| 313 | |
| 314 | if (time_after(jiffies, |
| 315 | orig_node->last_valid + 2 * PURGE_TIMEOUT * HZ)) { |
| 316 | |
| 317 | bat_dbg(DBG_BATMAN, bat_priv, |
| 318 | "Originator timeout: originator %pM, last_valid %lu\n", |
| 319 | orig_node->orig, (orig_node->last_valid / HZ)); |
| 320 | return true; |
| 321 | } else { |
| 322 | if (purge_orig_neighbors(bat_priv, orig_node, |
| 323 | &best_neigh_node)) { |
| 324 | update_routes(bat_priv, orig_node, |
| 325 | best_neigh_node, |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 326 | orig_node->tt_buff, |
| 327 | orig_node->tt_buff_len); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | |
| 331 | return false; |
| 332 | } |
| 333 | |
| 334 | static void _purge_orig(struct bat_priv *bat_priv) |
| 335 | { |
| 336 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 337 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 338 | struct hlist_head *head; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 339 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 340 | struct orig_node *orig_node; |
| 341 | int i; |
| 342 | |
| 343 | if (!hash) |
| 344 | return; |
| 345 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 346 | /* for all origins... */ |
| 347 | for (i = 0; i < hash->size; i++) { |
| 348 | head = &hash->table[i]; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 349 | list_lock = &hash->list_locks[i]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 350 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 351 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 352 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 353 | head, hash_entry) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 354 | if (purge_orig_node(bat_priv, orig_node)) { |
| 355 | if (orig_node->gw_flags) |
| 356 | gw_node_delete(bat_priv, orig_node); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 357 | hlist_del_rcu(node); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 358 | orig_node_free_ref(orig_node); |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 359 | continue; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | if (time_after(jiffies, orig_node->last_frag_packet + |
| 363 | msecs_to_jiffies(FRAG_TIMEOUT))) |
| 364 | frag_list_free(&orig_node->frag_list); |
| 365 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 366 | spin_unlock_bh(list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 367 | } |
| 368 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 369 | gw_node_purge(bat_priv); |
| 370 | gw_election(bat_priv); |
| 371 | |
| 372 | softif_neigh_purge(bat_priv); |
| 373 | } |
| 374 | |
| 375 | static void purge_orig(struct work_struct *work) |
| 376 | { |
| 377 | struct delayed_work *delayed_work = |
| 378 | container_of(work, struct delayed_work, work); |
| 379 | struct bat_priv *bat_priv = |
| 380 | container_of(delayed_work, struct bat_priv, orig_work); |
| 381 | |
| 382 | _purge_orig(bat_priv); |
| 383 | start_purge_timer(bat_priv); |
| 384 | } |
| 385 | |
| 386 | void purge_orig_ref(struct bat_priv *bat_priv) |
| 387 | { |
| 388 | _purge_orig(bat_priv); |
| 389 | } |
| 390 | |
| 391 | int orig_seq_print_text(struct seq_file *seq, void *offset) |
| 392 | { |
| 393 | struct net_device *net_dev = (struct net_device *)seq->private; |
| 394 | struct bat_priv *bat_priv = netdev_priv(net_dev); |
| 395 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 396 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 397 | struct hlist_head *head; |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 398 | struct hard_iface *primary_if; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 399 | struct orig_node *orig_node; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 400 | struct neigh_node *neigh_node, *neigh_node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 401 | int batman_count = 0; |
| 402 | int last_seen_secs; |
| 403 | int last_seen_msecs; |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 404 | int i, ret = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 405 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 406 | primary_if = primary_if_get_selected(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 407 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 408 | if (!primary_if) { |
| 409 | ret = seq_printf(seq, "BATMAN mesh %s disabled - " |
| 410 | "please specify interfaces to enable it\n", |
| 411 | net_dev->name); |
| 412 | goto out; |
| 413 | } |
| 414 | |
| 415 | if (primary_if->if_status != IF_ACTIVE) { |
| 416 | ret = seq_printf(seq, "BATMAN mesh %s " |
| 417 | "disabled - primary interface not active\n", |
| 418 | net_dev->name); |
| 419 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n", |
| 423 | SOURCE_VERSION, REVISION_VERSION_STR, |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 424 | primary_if->net_dev->name, |
| 425 | primary_if->net_dev->dev_addr, net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 426 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
| 427 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", |
| 428 | "outgoingIF", "Potential nexthops"); |
| 429 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 430 | for (i = 0; i < hash->size; i++) { |
| 431 | head = &hash->table[i]; |
| 432 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 433 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 434 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 435 | neigh_node = orig_node_get_router(orig_node); |
| 436 | if (!neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 437 | continue; |
| 438 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 439 | if (neigh_node->tq_avg == 0) |
| 440 | goto next; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 441 | |
| 442 | last_seen_secs = jiffies_to_msecs(jiffies - |
| 443 | orig_node->last_valid) / 1000; |
| 444 | last_seen_msecs = jiffies_to_msecs(jiffies - |
| 445 | orig_node->last_valid) % 1000; |
| 446 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 447 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
| 448 | orig_node->orig, last_seen_secs, |
| 449 | last_seen_msecs, neigh_node->tq_avg, |
| 450 | neigh_node->addr, |
| 451 | neigh_node->if_incoming->net_dev->name); |
| 452 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 453 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 454 | &orig_node->neigh_list, list) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 455 | seq_printf(seq, " %pM (%3i)", |
| 456 | neigh_node_tmp->addr, |
| 457 | neigh_node_tmp->tq_avg); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 458 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 459 | |
| 460 | seq_printf(seq, "\n"); |
| 461 | batman_count++; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 462 | |
| 463 | next: |
| 464 | neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 465 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 466 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 467 | } |
| 468 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 469 | if (batman_count == 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 470 | seq_printf(seq, "No batman nodes in range ...\n"); |
| 471 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 472 | out: |
| 473 | if (primary_if) |
| 474 | hardif_free_ref(primary_if); |
| 475 | return ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) |
| 479 | { |
| 480 | void *data_ptr; |
| 481 | |
| 482 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, |
| 483 | GFP_ATOMIC); |
| 484 | if (!data_ptr) { |
| 485 | pr_err("Can't resize orig: out of memory\n"); |
| 486 | return -1; |
| 487 | } |
| 488 | |
| 489 | memcpy(data_ptr, orig_node->bcast_own, |
| 490 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); |
| 491 | kfree(orig_node->bcast_own); |
| 492 | orig_node->bcast_own = data_ptr; |
| 493 | |
| 494 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
| 495 | if (!data_ptr) { |
| 496 | pr_err("Can't resize orig: out of memory\n"); |
| 497 | return -1; |
| 498 | } |
| 499 | |
| 500 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 501 | (max_if_num - 1) * sizeof(uint8_t)); |
| 502 | kfree(orig_node->bcast_own_sum); |
| 503 | orig_node->bcast_own_sum = data_ptr; |
| 504 | |
| 505 | return 0; |
| 506 | } |
| 507 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 508 | int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 509 | { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 510 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 511 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 512 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 513 | struct hlist_head *head; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 514 | struct orig_node *orig_node; |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 515 | int i, ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 516 | |
| 517 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
| 518 | * if_num */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 519 | for (i = 0; i < hash->size; i++) { |
| 520 | head = &hash->table[i]; |
| 521 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 522 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 523 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 524 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
| 525 | ret = orig_node_add_if(orig_node, max_if_num); |
| 526 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
| 527 | |
| 528 | if (ret == -1) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 529 | goto err; |
| 530 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 531 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 532 | } |
| 533 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 534 | return 0; |
| 535 | |
| 536 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 537 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 538 | return -ENOMEM; |
| 539 | } |
| 540 | |
| 541 | static int orig_node_del_if(struct orig_node *orig_node, |
| 542 | int max_if_num, int del_if_num) |
| 543 | { |
| 544 | void *data_ptr = NULL; |
| 545 | int chunk_size; |
| 546 | |
| 547 | /* last interface was removed */ |
| 548 | if (max_if_num == 0) |
| 549 | goto free_bcast_own; |
| 550 | |
| 551 | chunk_size = sizeof(unsigned long) * NUM_WORDS; |
| 552 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
| 553 | if (!data_ptr) { |
| 554 | pr_err("Can't resize orig: out of memory\n"); |
| 555 | return -1; |
| 556 | } |
| 557 | |
| 558 | /* copy first part */ |
| 559 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); |
| 560 | |
| 561 | /* copy second part */ |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 562 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 563 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
| 564 | (max_if_num - del_if_num) * chunk_size); |
| 565 | |
| 566 | free_bcast_own: |
| 567 | kfree(orig_node->bcast_own); |
| 568 | orig_node->bcast_own = data_ptr; |
| 569 | |
| 570 | if (max_if_num == 0) |
| 571 | goto free_own_sum; |
| 572 | |
| 573 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
| 574 | if (!data_ptr) { |
| 575 | pr_err("Can't resize orig: out of memory\n"); |
| 576 | return -1; |
| 577 | } |
| 578 | |
| 579 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 580 | del_if_num * sizeof(uint8_t)); |
| 581 | |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 582 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 583 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
| 584 | (max_if_num - del_if_num) * sizeof(uint8_t)); |
| 585 | |
| 586 | free_own_sum: |
| 587 | kfree(orig_node->bcast_own_sum); |
| 588 | orig_node->bcast_own_sum = data_ptr; |
| 589 | |
| 590 | return 0; |
| 591 | } |
| 592 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 593 | int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 594 | { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 595 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 596 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 597 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 598 | struct hlist_head *head; |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 599 | struct hard_iface *hard_iface_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 600 | struct orig_node *orig_node; |
| 601 | int i, ret; |
| 602 | |
| 603 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
| 604 | * if_num */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 605 | for (i = 0; i < hash->size; i++) { |
| 606 | head = &hash->table[i]; |
| 607 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 608 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 609 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 610 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 611 | ret = orig_node_del_if(orig_node, max_if_num, |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 612 | hard_iface->if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 613 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 614 | |
| 615 | if (ret == -1) |
| 616 | goto err; |
| 617 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 618 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ |
| 622 | rcu_read_lock(); |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 623 | list_for_each_entry_rcu(hard_iface_tmp, &hardif_list, list) { |
| 624 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 625 | continue; |
| 626 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 627 | if (hard_iface == hard_iface_tmp) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 628 | continue; |
| 629 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 630 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 631 | continue; |
| 632 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 633 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
| 634 | hard_iface_tmp->if_num--; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 635 | } |
| 636 | rcu_read_unlock(); |
| 637 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 638 | hard_iface->if_num = -1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 639 | return 0; |
| 640 | |
| 641 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 642 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 643 | return -ENOMEM; |
| 644 | } |