Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 1 | /* |
Sven Eckelmann | 567db7b | 2012-01-01 00:41:38 +0100 | [diff] [blame] | 2 | * Copyright (C) 2009-2012 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" |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 31 | #include "bridge_loop_avoidance.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 32 | |
| 33 | static void purge_orig(struct work_struct *work); |
| 34 | |
| 35 | static void start_purge_timer(struct bat_priv *bat_priv) |
| 36 | { |
| 37 | INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig); |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 38 | queue_delayed_work(bat_event_workqueue, |
| 39 | &bat_priv->orig_work, msecs_to_jiffies(1000)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 40 | } |
| 41 | |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 42 | /* returns 1 if they are the same originator */ |
| 43 | static int compare_orig(const struct hlist_node *node, const void *data2) |
| 44 | { |
| 45 | const void *data1 = container_of(node, struct orig_node, hash_entry); |
| 46 | |
| 47 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); |
| 48 | } |
| 49 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 50 | int originator_init(struct bat_priv *bat_priv) |
| 51 | { |
| 52 | if (bat_priv->orig_hash) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 53 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 54 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 55 | bat_priv->orig_hash = hash_new(1024); |
| 56 | |
| 57 | if (!bat_priv->orig_hash) |
| 58 | goto err; |
| 59 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 60 | start_purge_timer(bat_priv); |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 61 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 62 | |
| 63 | err: |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 64 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 65 | } |
| 66 | |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 67 | void neigh_node_free_ref(struct neigh_node *neigh_node) |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 68 | { |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 69 | if (atomic_dec_and_test(&neigh_node->refcount)) |
Paul E. McKenney | ae179ae | 2011-05-01 23:27:50 -0700 | [diff] [blame] | 70 | kfree_rcu(neigh_node, rcu); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 71 | } |
| 72 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 73 | /* increases the refcounter of a found router */ |
| 74 | struct neigh_node *orig_node_get_router(struct orig_node *orig_node) |
| 75 | { |
| 76 | struct neigh_node *router; |
| 77 | |
| 78 | rcu_read_lock(); |
| 79 | router = rcu_dereference(orig_node->router); |
| 80 | |
| 81 | if (router && !atomic_inc_not_zero(&router->refcount)) |
| 82 | router = NULL; |
| 83 | |
| 84 | rcu_read_unlock(); |
| 85 | return router; |
| 86 | } |
| 87 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 88 | struct neigh_node *batadv_neigh_node_new(struct hard_iface *hard_iface, |
| 89 | const uint8_t *neigh_addr, |
| 90 | uint32_t seqno) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 91 | { |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 92 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 93 | struct neigh_node *neigh_node; |
| 94 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 95 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 96 | if (!neigh_node) |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 97 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 98 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 99 | INIT_HLIST_NODE(&neigh_node->list); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 100 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 101 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
Marek Lindner | e3b0d0d | 2012-03-17 15:28:32 +0800 | [diff] [blame] | 102 | spin_lock_init(&neigh_node->lq_update_lock); |
Marek Lindner | 1605d0d | 2011-02-18 12:28:11 +0000 | [diff] [blame] | 103 | |
| 104 | /* extra reference for return */ |
| 105 | atomic_set(&neigh_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 106 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 107 | bat_dbg(DBG_BATMAN, bat_priv, |
| 108 | "Creating new neighbor %pM, initial seqno %d\n", |
| 109 | neigh_addr, seqno); |
| 110 | |
| 111 | out: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 112 | return neigh_node; |
| 113 | } |
| 114 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 115 | static void orig_node_free_rcu(struct rcu_head *rcu) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 116 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 117 | struct hlist_node *node, *node_tmp; |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 118 | struct neigh_node *neigh_node, *tmp_neigh_node; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 119 | struct orig_node *orig_node; |
| 120 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 121 | orig_node = container_of(rcu, struct orig_node, rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 122 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 123 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 124 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 125 | /* for all bonding members ... */ |
| 126 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, |
| 127 | &orig_node->bond_list, bonding_list) { |
| 128 | list_del_rcu(&neigh_node->bonding_list); |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 129 | neigh_node_free_ref(neigh_node); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 130 | } |
| 131 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 132 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 133 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 134 | &orig_node->neigh_list, list) { |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 135 | hlist_del_rcu(&neigh_node->list); |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 136 | neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 139 | spin_unlock_bh(&orig_node->neigh_list_lock); |
| 140 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 141 | frag_list_free(&orig_node->frag_list); |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 142 | tt_global_del_orig(orig_node->bat_priv, orig_node, |
Sven Eckelmann | 7c64fd9 | 2012-02-28 10:55:36 +0100 | [diff] [blame] | 143 | "originator timed out"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 144 | |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 145 | kfree(orig_node->tt_buff); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 146 | kfree(orig_node->bcast_own); |
| 147 | kfree(orig_node->bcast_own_sum); |
| 148 | kfree(orig_node); |
| 149 | } |
| 150 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 151 | void orig_node_free_ref(struct orig_node *orig_node) |
| 152 | { |
| 153 | if (atomic_dec_and_test(&orig_node->refcount)) |
| 154 | call_rcu(&orig_node->rcu, orig_node_free_rcu); |
| 155 | } |
| 156 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 157 | void originator_free(struct bat_priv *bat_priv) |
| 158 | { |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 159 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 160 | struct hlist_node *node, *node_tmp; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 161 | struct hlist_head *head; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 162 | spinlock_t *list_lock; /* spinlock to protect write access */ |
| 163 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 164 | uint32_t i; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 165 | |
| 166 | if (!hash) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 167 | return; |
| 168 | |
| 169 | cancel_delayed_work_sync(&bat_priv->orig_work); |
| 170 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 171 | bat_priv->orig_hash = NULL; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 172 | |
| 173 | for (i = 0; i < hash->size; i++) { |
| 174 | head = &hash->table[i]; |
| 175 | list_lock = &hash->list_locks[i]; |
| 176 | |
| 177 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 178 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 179 | head, hash_entry) { |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 180 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 181 | hlist_del_rcu(node); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 182 | orig_node_free_ref(orig_node); |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 183 | } |
| 184 | spin_unlock_bh(list_lock); |
| 185 | } |
| 186 | |
| 187 | hash_destroy(hash); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | /* this function finds or creates an originator entry for the given |
| 191 | * address if it does not exits */ |
Sven Eckelmann | 747e422 | 2011-05-14 23:14:50 +0200 | [diff] [blame] | 192 | 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] | 193 | { |
| 194 | struct orig_node *orig_node; |
| 195 | int size; |
| 196 | int hash_added; |
| 197 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 198 | orig_node = orig_hash_find(bat_priv, addr); |
| 199 | if (orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 200 | return orig_node; |
| 201 | |
| 202 | bat_dbg(DBG_BATMAN, bat_priv, |
| 203 | "Creating new originator: %pM\n", addr); |
| 204 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 205 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 206 | if (!orig_node) |
| 207 | return NULL; |
| 208 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 209 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 210 | INIT_LIST_HEAD(&orig_node->bond_list); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 211 | spin_lock_init(&orig_node->ogm_cnt_lock); |
Marek Lindner | f3e0008 | 2011-01-25 21:52:11 +0000 | [diff] [blame] | 212 | spin_lock_init(&orig_node->bcast_seqno_lock); |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 213 | spin_lock_init(&orig_node->neigh_list_lock); |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 214 | spin_lock_init(&orig_node->tt_buff_lock); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 215 | |
| 216 | /* extra reference for return */ |
| 217 | atomic_set(&orig_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 218 | |
Antonio Quartulli | 1707157 | 2011-11-07 16:36:40 +0100 | [diff] [blame] | 219 | orig_node->tt_initialised = false; |
Antonio Quartulli | cc47f66 | 2011-04-27 14:27:57 +0200 | [diff] [blame] | 220 | orig_node->tt_poss_change = false; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 221 | orig_node->bat_priv = bat_priv; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 222 | memcpy(orig_node->orig, addr, ETH_ALEN); |
| 223 | orig_node->router = NULL; |
Antonio Quartulli | c8c991b | 2011-07-07 01:40:57 +0200 | [diff] [blame] | 224 | orig_node->tt_crc = 0; |
| 225 | atomic_set(&orig_node->last_ttvn, 0); |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 226 | orig_node->tt_buff = NULL; |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 227 | orig_node->tt_buff_len = 0; |
| 228 | atomic_set(&orig_node->tt_size, 0); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 229 | orig_node->bcast_seqno_reset = jiffies - 1 |
| 230 | - msecs_to_jiffies(RESET_PROTECTION_MS); |
| 231 | orig_node->batman_seqno_reset = jiffies - 1 |
| 232 | - msecs_to_jiffies(RESET_PROTECTION_MS); |
| 233 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 234 | atomic_set(&orig_node->bond_candidates, 0); |
| 235 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 236 | size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS; |
| 237 | |
| 238 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); |
| 239 | if (!orig_node->bcast_own) |
| 240 | goto free_orig_node; |
| 241 | |
| 242 | size = bat_priv->num_ifaces * sizeof(uint8_t); |
| 243 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); |
| 244 | |
| 245 | INIT_LIST_HEAD(&orig_node->frag_list); |
| 246 | orig_node->last_frag_packet = 0; |
| 247 | |
| 248 | if (!orig_node->bcast_own_sum) |
| 249 | goto free_bcast_own; |
| 250 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 251 | hash_added = hash_add(bat_priv->orig_hash, compare_orig, |
| 252 | choose_orig, orig_node, &orig_node->hash_entry); |
Antonio Quartulli | 1a1f37d | 2011-07-10 00:36:36 +0200 | [diff] [blame] | 253 | if (hash_added != 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 254 | goto free_bcast_own_sum; |
| 255 | |
| 256 | return orig_node; |
| 257 | free_bcast_own_sum: |
| 258 | kfree(orig_node->bcast_own_sum); |
| 259 | free_bcast_own: |
| 260 | kfree(orig_node->bcast_own); |
| 261 | free_orig_node: |
| 262 | kfree(orig_node); |
| 263 | return NULL; |
| 264 | } |
| 265 | |
| 266 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, |
| 267 | struct orig_node *orig_node, |
| 268 | struct neigh_node **best_neigh_node) |
| 269 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 270 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 271 | struct neigh_node *neigh_node; |
| 272 | bool neigh_purged = false; |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 273 | unsigned long last_seen; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 274 | |
| 275 | *best_neigh_node = NULL; |
| 276 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 277 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 278 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 279 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 280 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 281 | &orig_node->neigh_list, list) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 282 | |
Marek Lindner | d7b2a97 | 2012-03-01 15:35:19 +0800 | [diff] [blame] | 283 | if ((has_timed_out(neigh_node->last_seen, PURGE_TIMEOUT)) || |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 284 | (neigh_node->if_incoming->if_status == IF_INACTIVE) || |
Marek Lindner | 1a241a5 | 2011-01-19 19:16:10 +0000 | [diff] [blame] | 285 | (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) || |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 286 | (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { |
| 287 | |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 288 | last_seen = neigh_node->last_seen; |
| 289 | |
Marek Lindner | 1a241a5 | 2011-01-19 19:16:10 +0000 | [diff] [blame] | 290 | if ((neigh_node->if_incoming->if_status == |
| 291 | IF_INACTIVE) || |
| 292 | (neigh_node->if_incoming->if_status == |
| 293 | IF_NOT_IN_USE) || |
| 294 | (neigh_node->if_incoming->if_status == |
| 295 | IF_TO_BE_REMOVED)) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 296 | bat_dbg(DBG_BATMAN, bat_priv, |
Sven Eckelmann | 86ceb36 | 2012-03-07 09:07:45 +0100 | [diff] [blame] | 297 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 298 | orig_node->orig, neigh_node->addr, |
| 299 | neigh_node->if_incoming->net_dev->name); |
| 300 | else |
| 301 | bat_dbg(DBG_BATMAN, bat_priv, |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 302 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 303 | orig_node->orig, neigh_node->addr, |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 304 | jiffies_to_msecs(last_seen)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 305 | |
| 306 | neigh_purged = true; |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 307 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 308 | hlist_del_rcu(&neigh_node->list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 309 | bonding_candidate_del(orig_node, neigh_node); |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 310 | neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 311 | } else { |
| 312 | if ((!*best_neigh_node) || |
| 313 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) |
| 314 | *best_neigh_node = neigh_node; |
| 315 | } |
| 316 | } |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 317 | |
| 318 | spin_unlock_bh(&orig_node->neigh_list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 319 | return neigh_purged; |
| 320 | } |
| 321 | |
| 322 | static bool purge_orig_node(struct bat_priv *bat_priv, |
| 323 | struct orig_node *orig_node) |
| 324 | { |
| 325 | struct neigh_node *best_neigh_node; |
| 326 | |
Marek Lindner | d7b2a97 | 2012-03-01 15:35:19 +0800 | [diff] [blame] | 327 | if (has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 328 | bat_dbg(DBG_BATMAN, bat_priv, |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 329 | "Originator timeout: originator %pM, last_seen %u\n", |
| 330 | orig_node->orig, |
| 331 | jiffies_to_msecs(orig_node->last_seen)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 332 | return true; |
| 333 | } else { |
| 334 | if (purge_orig_neighbors(bat_priv, orig_node, |
Sven Eckelmann | 7c64fd9 | 2012-02-28 10:55:36 +0100 | [diff] [blame] | 335 | &best_neigh_node)) |
Marek Lindner | fc95727 | 2011-07-30 12:04:12 +0200 | [diff] [blame] | 336 | update_route(bat_priv, orig_node, best_neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | return false; |
| 340 | } |
| 341 | |
| 342 | static void _purge_orig(struct bat_priv *bat_priv) |
| 343 | { |
| 344 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 345 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 346 | struct hlist_head *head; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 347 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 348 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 349 | uint32_t i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 350 | |
| 351 | if (!hash) |
| 352 | return; |
| 353 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 354 | /* for all origins... */ |
| 355 | for (i = 0; i < hash->size; i++) { |
| 356 | head = &hash->table[i]; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 357 | list_lock = &hash->list_locks[i]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 358 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 359 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 360 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 361 | head, hash_entry) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 362 | if (purge_orig_node(bat_priv, orig_node)) { |
| 363 | if (orig_node->gw_flags) |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame^] | 364 | batadv_gw_node_delete(bat_priv, |
| 365 | orig_node); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 366 | hlist_del_rcu(node); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 367 | orig_node_free_ref(orig_node); |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 368 | continue; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 369 | } |
| 370 | |
Marek Lindner | 032b796 | 2011-12-20 19:30:40 +0800 | [diff] [blame] | 371 | if (has_timed_out(orig_node->last_frag_packet, |
| 372 | FRAG_TIMEOUT)) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 373 | frag_list_free(&orig_node->frag_list); |
| 374 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 375 | spin_unlock_bh(list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 376 | } |
| 377 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame^] | 378 | batadv_gw_node_purge(bat_priv); |
| 379 | batadv_gw_election(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | static void purge_orig(struct work_struct *work) |
| 383 | { |
| 384 | struct delayed_work *delayed_work = |
| 385 | container_of(work, struct delayed_work, work); |
| 386 | struct bat_priv *bat_priv = |
| 387 | container_of(delayed_work, struct bat_priv, orig_work); |
| 388 | |
| 389 | _purge_orig(bat_priv); |
| 390 | start_purge_timer(bat_priv); |
| 391 | } |
| 392 | |
| 393 | void purge_orig_ref(struct bat_priv *bat_priv) |
| 394 | { |
| 395 | _purge_orig(bat_priv); |
| 396 | } |
| 397 | |
| 398 | int orig_seq_print_text(struct seq_file *seq, void *offset) |
| 399 | { |
| 400 | struct net_device *net_dev = (struct net_device *)seq->private; |
| 401 | struct bat_priv *bat_priv = netdev_priv(net_dev); |
| 402 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 403 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 404 | struct hlist_head *head; |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 405 | struct hard_iface *primary_if; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 406 | struct orig_node *orig_node; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 407 | struct neigh_node *neigh_node, *neigh_node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 408 | int batman_count = 0; |
| 409 | int last_seen_secs; |
| 410 | int last_seen_msecs; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 411 | uint32_t i; |
| 412 | int ret = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 413 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 414 | primary_if = primary_if_get_selected(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 415 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 416 | if (!primary_if) { |
Sven Eckelmann | 86ceb36 | 2012-03-07 09:07:45 +0100 | [diff] [blame] | 417 | ret = seq_printf(seq, |
| 418 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 419 | net_dev->name); |
| 420 | goto out; |
| 421 | } |
| 422 | |
| 423 | if (primary_if->if_status != IF_ACTIVE) { |
Sven Eckelmann | 86ceb36 | 2012-03-07 09:07:45 +0100 | [diff] [blame] | 424 | ret = seq_printf(seq, |
| 425 | "BATMAN mesh %s disabled - primary interface not active\n", |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 426 | net_dev->name); |
| 427 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 428 | } |
| 429 | |
Sven Eckelmann | 44c4349 | 2011-07-05 10:42:51 +0200 | [diff] [blame] | 430 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
| 431 | SOURCE_VERSION, primary_if->net_dev->name, |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 432 | primary_if->net_dev->dev_addr, net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 433 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
| 434 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", |
| 435 | "outgoingIF", "Potential nexthops"); |
| 436 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 437 | for (i = 0; i < hash->size; i++) { |
| 438 | head = &hash->table[i]; |
| 439 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 440 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 441 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 442 | neigh_node = orig_node_get_router(orig_node); |
| 443 | if (!neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 444 | continue; |
| 445 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 446 | if (neigh_node->tq_avg == 0) |
| 447 | goto next; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 448 | |
| 449 | last_seen_secs = jiffies_to_msecs(jiffies - |
Marek Lindner | d7b2a97 | 2012-03-01 15:35:19 +0800 | [diff] [blame] | 450 | orig_node->last_seen) / 1000; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 451 | last_seen_msecs = jiffies_to_msecs(jiffies - |
Marek Lindner | d7b2a97 | 2012-03-01 15:35:19 +0800 | [diff] [blame] | 452 | orig_node->last_seen) % 1000; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 453 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 454 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
| 455 | orig_node->orig, last_seen_secs, |
| 456 | last_seen_msecs, neigh_node->tq_avg, |
| 457 | neigh_node->addr, |
| 458 | neigh_node->if_incoming->net_dev->name); |
| 459 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 460 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 461 | &orig_node->neigh_list, list) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 462 | seq_printf(seq, " %pM (%3i)", |
| 463 | neigh_node_tmp->addr, |
| 464 | neigh_node_tmp->tq_avg); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 465 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 466 | |
| 467 | seq_printf(seq, "\n"); |
| 468 | batman_count++; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 469 | |
| 470 | next: |
| 471 | neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 472 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 473 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 474 | } |
| 475 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 476 | if (batman_count == 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 477 | seq_printf(seq, "No batman nodes in range ...\n"); |
| 478 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 479 | out: |
| 480 | if (primary_if) |
| 481 | hardif_free_ref(primary_if); |
| 482 | return ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) |
| 486 | { |
| 487 | void *data_ptr; |
| 488 | |
| 489 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, |
| 490 | GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 491 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 492 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 493 | |
| 494 | memcpy(data_ptr, orig_node->bcast_own, |
| 495 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); |
| 496 | kfree(orig_node->bcast_own); |
| 497 | orig_node->bcast_own = data_ptr; |
| 498 | |
| 499 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 500 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 501 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 502 | |
| 503 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 504 | (max_if_num - 1) * sizeof(uint8_t)); |
| 505 | kfree(orig_node->bcast_own_sum); |
| 506 | orig_node->bcast_own_sum = data_ptr; |
| 507 | |
| 508 | return 0; |
| 509 | } |
| 510 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 511 | 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] | 512 | { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 513 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 514 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 515 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 516 | struct hlist_head *head; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 517 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 518 | uint32_t i; |
| 519 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 520 | |
| 521 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
| 522 | * if_num */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 523 | for (i = 0; i < hash->size; i++) { |
| 524 | head = &hash->table[i]; |
| 525 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 526 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 527 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 528 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
| 529 | ret = orig_node_add_if(orig_node, max_if_num); |
| 530 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
| 531 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 532 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 533 | goto err; |
| 534 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 535 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 536 | } |
| 537 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 538 | return 0; |
| 539 | |
| 540 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 541 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 542 | return -ENOMEM; |
| 543 | } |
| 544 | |
| 545 | static int orig_node_del_if(struct orig_node *orig_node, |
| 546 | int max_if_num, int del_if_num) |
| 547 | { |
| 548 | void *data_ptr = NULL; |
| 549 | int chunk_size; |
| 550 | |
| 551 | /* last interface was removed */ |
| 552 | if (max_if_num == 0) |
| 553 | goto free_bcast_own; |
| 554 | |
| 555 | chunk_size = sizeof(unsigned long) * NUM_WORDS; |
| 556 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 557 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 558 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 559 | |
| 560 | /* copy first part */ |
| 561 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); |
| 562 | |
| 563 | /* copy second part */ |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 564 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 565 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
| 566 | (max_if_num - del_if_num) * chunk_size); |
| 567 | |
| 568 | free_bcast_own: |
| 569 | kfree(orig_node->bcast_own); |
| 570 | orig_node->bcast_own = data_ptr; |
| 571 | |
| 572 | if (max_if_num == 0) |
| 573 | goto free_own_sum; |
| 574 | |
| 575 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 576 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 577 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 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; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 601 | uint32_t i; |
| 602 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 603 | |
| 604 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
| 605 | * if_num */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 606 | for (i = 0; i < hash->size; i++) { |
| 607 | head = &hash->table[i]; |
| 608 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 609 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 610 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 611 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 612 | ret = orig_node_del_if(orig_node, max_if_num, |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 613 | hard_iface->if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 614 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 615 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 616 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 617 | goto err; |
| 618 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 619 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 620 | } |
| 621 | |
| 622 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ |
| 623 | rcu_read_lock(); |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 624 | list_for_each_entry_rcu(hard_iface_tmp, &hardif_list, list) { |
| 625 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 626 | continue; |
| 627 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 628 | if (hard_iface == hard_iface_tmp) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 629 | continue; |
| 630 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 631 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 632 | continue; |
| 633 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 634 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
| 635 | hard_iface_tmp->if_num--; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 636 | } |
| 637 | rcu_read_unlock(); |
| 638 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 639 | hard_iface->if_num = -1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 640 | return 0; |
| 641 | |
| 642 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 643 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 644 | return -ENOMEM; |
| 645 | } |