Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 1 | /* Copyright (C) 2009-2012 B.A.T.M.A.N. contributors: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 2 | * |
| 3 | * Marek Lindner, Simon Wunderlich |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of version 2 of the GNU General Public |
| 7 | * License as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 17 | * 02110-1301, USA |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 18 | */ |
| 19 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 20 | #include "main.h" |
| 21 | #include "originator.h" |
| 22 | #include "hash.h" |
| 23 | #include "translation-table.h" |
| 24 | #include "routing.h" |
| 25 | #include "gateway_client.h" |
| 26 | #include "hard-interface.h" |
| 27 | #include "unicast.h" |
| 28 | #include "soft-interface.h" |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 29 | #include "bridge_loop_avoidance.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 30 | |
| 31 | static void purge_orig(struct work_struct *work); |
| 32 | |
| 33 | static void start_purge_timer(struct bat_priv *bat_priv) |
| 34 | { |
| 35 | INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 36 | queue_delayed_work(batadv_event_workqueue, |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 37 | &bat_priv->orig_work, msecs_to_jiffies(1000)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 38 | } |
| 39 | |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 40 | /* returns 1 if they are the same originator */ |
| 41 | static int compare_orig(const struct hlist_node *node, const void *data2) |
| 42 | { |
| 43 | const void *data1 = container_of(node, struct orig_node, hash_entry); |
| 44 | |
| 45 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); |
| 46 | } |
| 47 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 48 | int batadv_originator_init(struct bat_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 49 | { |
| 50 | if (bat_priv->orig_hash) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 51 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 52 | |
Sven Eckelmann | 1a8eaf0 | 2012-05-12 02:09:32 +0200 | [diff] [blame] | 53 | bat_priv->orig_hash = batadv_hash_new(1024); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 54 | |
| 55 | if (!bat_priv->orig_hash) |
| 56 | goto err; |
| 57 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 58 | start_purge_timer(bat_priv); |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 59 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 60 | |
| 61 | err: |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 62 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 63 | } |
| 64 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 65 | void batadv_neigh_node_free_ref(struct neigh_node *neigh_node) |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 66 | { |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 67 | if (atomic_dec_and_test(&neigh_node->refcount)) |
Paul E. McKenney | ae179ae | 2011-05-01 23:27:50 -0700 | [diff] [blame] | 68 | kfree_rcu(neigh_node, rcu); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 69 | } |
| 70 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 71 | /* increases the refcounter of a found router */ |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 72 | struct neigh_node *batadv_orig_node_get_router(struct orig_node *orig_node) |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 73 | { |
| 74 | struct neigh_node *router; |
| 75 | |
| 76 | rcu_read_lock(); |
| 77 | router = rcu_dereference(orig_node->router); |
| 78 | |
| 79 | if (router && !atomic_inc_not_zero(&router->refcount)) |
| 80 | router = NULL; |
| 81 | |
| 82 | rcu_read_unlock(); |
| 83 | return router; |
| 84 | } |
| 85 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 86 | struct neigh_node *batadv_neigh_node_new(struct hard_iface *hard_iface, |
| 87 | const uint8_t *neigh_addr, |
| 88 | uint32_t seqno) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 89 | { |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 90 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 91 | struct neigh_node *neigh_node; |
| 92 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 93 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 94 | if (!neigh_node) |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 95 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 96 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 97 | INIT_HLIST_NODE(&neigh_node->list); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 98 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 99 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
Marek Lindner | e3b0d0d | 2012-03-17 15:28:32 +0800 | [diff] [blame] | 100 | spin_lock_init(&neigh_node->lq_update_lock); |
Marek Lindner | 1605d0d | 2011-02-18 12:28:11 +0000 | [diff] [blame] | 101 | |
| 102 | /* extra reference for return */ |
| 103 | atomic_set(&neigh_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 104 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 105 | batadv_dbg(DBG_BATMAN, bat_priv, |
| 106 | "Creating new neighbor %pM, initial seqno %d\n", |
| 107 | neigh_addr, seqno); |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 108 | |
| 109 | out: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 110 | return neigh_node; |
| 111 | } |
| 112 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 113 | static void orig_node_free_rcu(struct rcu_head *rcu) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 114 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 115 | struct hlist_node *node, *node_tmp; |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 116 | struct neigh_node *neigh_node, *tmp_neigh_node; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 117 | struct orig_node *orig_node; |
| 118 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 119 | orig_node = container_of(rcu, struct orig_node, rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 120 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 121 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 122 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 123 | /* for all bonding members ... */ |
| 124 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, |
| 125 | &orig_node->bond_list, bonding_list) { |
| 126 | list_del_rcu(&neigh_node->bonding_list); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 127 | batadv_neigh_node_free_ref(neigh_node); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 130 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 131 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 132 | &orig_node->neigh_list, list) { |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 133 | hlist_del_rcu(&neigh_node->list); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 134 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 135 | } |
| 136 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 137 | spin_unlock_bh(&orig_node->neigh_list_lock); |
| 138 | |
Sven Eckelmann | 88ed1e77 | 2012-05-12 02:09:40 +0200 | [diff] [blame] | 139 | batadv_frag_list_free(&orig_node->frag_list); |
Sven Eckelmann | 08c36d3 | 2012-05-12 02:09:39 +0200 | [diff] [blame] | 140 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
| 141 | "originator timed out"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 142 | |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 143 | kfree(orig_node->tt_buff); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 144 | kfree(orig_node->bcast_own); |
| 145 | kfree(orig_node->bcast_own_sum); |
| 146 | kfree(orig_node); |
| 147 | } |
| 148 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 149 | void batadv_orig_node_free_ref(struct orig_node *orig_node) |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 150 | { |
| 151 | if (atomic_dec_and_test(&orig_node->refcount)) |
| 152 | call_rcu(&orig_node->rcu, orig_node_free_rcu); |
| 153 | } |
| 154 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 155 | void batadv_originator_free(struct bat_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 156 | { |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 157 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 158 | struct hlist_node *node, *node_tmp; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 159 | struct hlist_head *head; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 160 | spinlock_t *list_lock; /* spinlock to protect write access */ |
| 161 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 162 | uint32_t i; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 163 | |
| 164 | if (!hash) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 165 | return; |
| 166 | |
| 167 | cancel_delayed_work_sync(&bat_priv->orig_work); |
| 168 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 169 | bat_priv->orig_hash = NULL; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 170 | |
| 171 | for (i = 0; i < hash->size; i++) { |
| 172 | head = &hash->table[i]; |
| 173 | list_lock = &hash->list_locks[i]; |
| 174 | |
| 175 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 176 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 177 | head, hash_entry) { |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 178 | |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 179 | hlist_del_rcu(node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 180 | batadv_orig_node_free_ref(orig_node); |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 181 | } |
| 182 | spin_unlock_bh(list_lock); |
| 183 | } |
| 184 | |
Sven Eckelmann | 1a8eaf0 | 2012-05-12 02:09:32 +0200 | [diff] [blame] | 185 | batadv_hash_destroy(hash); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | /* this function finds or creates an originator entry for the given |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 189 | * address if it does not exits |
| 190 | */ |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 191 | struct orig_node *batadv_get_orig_node(struct bat_priv *bat_priv, |
| 192 | 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 | |
Sven Eckelmann | da64119 | 2012-05-12 13:48:56 +0200 | [diff] [blame] | 198 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 199 | if (orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 200 | return orig_node; |
| 201 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 202 | batadv_dbg(DBG_BATMAN, bat_priv, "Creating new originator: %pM\n", |
| 203 | addr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 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 | |
Sven Eckelmann | c0a5592 | 2012-05-12 13:48:55 +0200 | [diff] [blame] | 251 | hash_added = batadv_hash_add(bat_priv->orig_hash, compare_orig, |
Sven Eckelmann | da64119 | 2012-05-12 13:48:56 +0200 | [diff] [blame] | 252 | batadv_choose_orig, orig_node, |
Sven Eckelmann | c0a5592 | 2012-05-12 13:48:55 +0200 | [diff] [blame] | 253 | &orig_node->hash_entry); |
Antonio Quartulli | 1a1f37d | 2011-07-10 00:36:36 +0200 | [diff] [blame] | 254 | if (hash_added != 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 255 | goto free_bcast_own_sum; |
| 256 | |
| 257 | return orig_node; |
| 258 | free_bcast_own_sum: |
| 259 | kfree(orig_node->bcast_own_sum); |
| 260 | free_bcast_own: |
| 261 | kfree(orig_node->bcast_own); |
| 262 | free_orig_node: |
| 263 | kfree(orig_node); |
| 264 | return NULL; |
| 265 | } |
| 266 | |
| 267 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, |
| 268 | struct orig_node *orig_node, |
| 269 | struct neigh_node **best_neigh_node) |
| 270 | { |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 271 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 272 | struct neigh_node *neigh_node; |
| 273 | bool neigh_purged = false; |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 274 | unsigned long last_seen; |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 275 | struct hard_iface *if_incoming; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 276 | |
| 277 | *best_neigh_node = NULL; |
| 278 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 279 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 280 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 281 | /* for all neighbors towards this originator ... */ |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 282 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
| 283 | &orig_node->neigh_list, list) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 284 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 285 | last_seen = neigh_node->last_seen; |
| 286 | if_incoming = neigh_node->if_incoming; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 287 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 288 | if ((batadv_has_timed_out(last_seen, PURGE_TIMEOUT)) || |
| 289 | (if_incoming->if_status == IF_INACTIVE) || |
| 290 | (if_incoming->if_status == IF_NOT_IN_USE) || |
| 291 | (if_incoming->if_status == IF_TO_BE_REMOVED)) { |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 292 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 293 | if ((if_incoming->if_status == IF_INACTIVE) || |
| 294 | (if_incoming->if_status == IF_NOT_IN_USE) || |
| 295 | (if_incoming->if_status == IF_TO_BE_REMOVED)) |
| 296 | batadv_dbg(DBG_BATMAN, bat_priv, |
| 297 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
| 298 | orig_node->orig, neigh_node->addr, |
| 299 | if_incoming->net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 300 | else |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 301 | batadv_dbg(DBG_BATMAN, bat_priv, |
| 302 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
| 303 | orig_node->orig, neigh_node->addr, |
| 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); |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 309 | batadv_bonding_candidate_del(orig_node, neigh_node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 310 | batadv_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 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 327 | if (batadv_has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
| 328 | batadv_dbg(DBG_BATMAN, bat_priv, |
| 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)) |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 336 | batadv_update_route(bat_priv, orig_node, |
| 337 | best_neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | return false; |
| 341 | } |
| 342 | |
| 343 | static void _purge_orig(struct bat_priv *bat_priv) |
| 344 | { |
| 345 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 346 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 347 | struct hlist_head *head; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 348 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 349 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 350 | uint32_t i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 351 | |
| 352 | if (!hash) |
| 353 | return; |
| 354 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 355 | /* for all origins... */ |
| 356 | for (i = 0; i < hash->size; i++) { |
| 357 | head = &hash->table[i]; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 358 | list_lock = &hash->list_locks[i]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 359 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 360 | spin_lock_bh(list_lock); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 361 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
| 362 | head, hash_entry) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 363 | if (purge_orig_node(bat_priv, orig_node)) { |
| 364 | if (orig_node->gw_flags) |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 365 | batadv_gw_node_delete(bat_priv, |
| 366 | orig_node); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 367 | hlist_del_rcu(node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 368 | batadv_orig_node_free_ref(orig_node); |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 369 | continue; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 370 | } |
| 371 | |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame^] | 372 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
| 373 | FRAG_TIMEOUT)) |
Sven Eckelmann | 88ed1e77 | 2012-05-12 02:09:40 +0200 | [diff] [blame] | 374 | batadv_frag_list_free(&orig_node->frag_list); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 375 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 376 | spin_unlock_bh(list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 377 | } |
| 378 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 379 | batadv_gw_node_purge(bat_priv); |
| 380 | batadv_gw_election(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | static void purge_orig(struct work_struct *work) |
| 384 | { |
| 385 | struct delayed_work *delayed_work = |
| 386 | container_of(work, struct delayed_work, work); |
| 387 | struct bat_priv *bat_priv = |
| 388 | container_of(delayed_work, struct bat_priv, orig_work); |
| 389 | |
| 390 | _purge_orig(bat_priv); |
| 391 | start_purge_timer(bat_priv); |
| 392 | } |
| 393 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 394 | void batadv_purge_orig_ref(struct bat_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 395 | { |
| 396 | _purge_orig(bat_priv); |
| 397 | } |
| 398 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 399 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 400 | { |
| 401 | struct net_device *net_dev = (struct net_device *)seq->private; |
| 402 | struct bat_priv *bat_priv = netdev_priv(net_dev); |
| 403 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 404 | struct hlist_node *node, *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 405 | struct hlist_head *head; |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 406 | struct hard_iface *primary_if; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 407 | struct orig_node *orig_node; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 408 | struct neigh_node *neigh_node, *neigh_node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 409 | int batman_count = 0; |
| 410 | int last_seen_secs; |
| 411 | int last_seen_msecs; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 412 | uint32_t i; |
| 413 | int ret = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 414 | |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 415 | primary_if = batadv_primary_if_get_selected(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 416 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 417 | if (!primary_if) { |
Sven Eckelmann | 86ceb36 | 2012-03-07 09:07:45 +0100 | [diff] [blame] | 418 | ret = seq_printf(seq, |
| 419 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 420 | net_dev->name); |
| 421 | goto out; |
| 422 | } |
| 423 | |
| 424 | if (primary_if->if_status != IF_ACTIVE) { |
Sven Eckelmann | 86ceb36 | 2012-03-07 09:07:45 +0100 | [diff] [blame] | 425 | ret = seq_printf(seq, |
| 426 | "BATMAN mesh %s disabled - primary interface not active\n", |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 427 | net_dev->name); |
| 428 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 429 | } |
| 430 | |
Sven Eckelmann | 44c4349 | 2011-07-05 10:42:51 +0200 | [diff] [blame] | 431 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
| 432 | SOURCE_VERSION, primary_if->net_dev->name, |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 433 | primary_if->net_dev->dev_addr, net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 434 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
| 435 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", |
| 436 | "outgoingIF", "Potential nexthops"); |
| 437 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 438 | for (i = 0; i < hash->size; i++) { |
| 439 | head = &hash->table[i]; |
| 440 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 441 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 442 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 443 | neigh_node = batadv_orig_node_get_router(orig_node); |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 444 | if (!neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 445 | continue; |
| 446 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 447 | if (neigh_node->tq_avg == 0) |
| 448 | goto next; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 449 | |
| 450 | last_seen_secs = jiffies_to_msecs(jiffies - |
Marek Lindner | d7b2a97 | 2012-03-01 15:35:19 +0800 | [diff] [blame] | 451 | orig_node->last_seen) / 1000; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 452 | last_seen_msecs = jiffies_to_msecs(jiffies - |
Marek Lindner | d7b2a97 | 2012-03-01 15:35:19 +0800 | [diff] [blame] | 453 | orig_node->last_seen) % 1000; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 454 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 455 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
| 456 | orig_node->orig, last_seen_secs, |
| 457 | last_seen_msecs, neigh_node->tq_avg, |
| 458 | neigh_node->addr, |
| 459 | neigh_node->if_incoming->net_dev->name); |
| 460 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 461 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 462 | &orig_node->neigh_list, list) { |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 463 | seq_printf(seq, " %pM (%3i)", |
| 464 | neigh_node_tmp->addr, |
| 465 | neigh_node_tmp->tq_avg); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 466 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 467 | |
| 468 | seq_printf(seq, "\n"); |
| 469 | batman_count++; |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 470 | |
| 471 | next: |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 472 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 473 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 474 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 475 | } |
| 476 | |
Linus Lüssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 477 | if (batman_count == 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 478 | seq_printf(seq, "No batman nodes in range ...\n"); |
| 479 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 480 | out: |
| 481 | if (primary_if) |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 482 | batadv_hardif_free_ref(primary_if); |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 483 | return ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) |
| 487 | { |
| 488 | void *data_ptr; |
| 489 | |
| 490 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, |
| 491 | GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 492 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 493 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 494 | |
| 495 | memcpy(data_ptr, orig_node->bcast_own, |
| 496 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); |
| 497 | kfree(orig_node->bcast_own); |
| 498 | orig_node->bcast_own = data_ptr; |
| 499 | |
| 500 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 501 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 502 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 503 | |
| 504 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 505 | (max_if_num - 1) * sizeof(uint8_t)); |
| 506 | kfree(orig_node->bcast_own_sum); |
| 507 | orig_node->bcast_own_sum = data_ptr; |
| 508 | |
| 509 | return 0; |
| 510 | } |
| 511 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 512 | int batadv_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] | 513 | { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 514 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 515 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 516 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 517 | struct hlist_head *head; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 518 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 519 | uint32_t i; |
| 520 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 521 | |
| 522 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 523 | * if_num |
| 524 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 525 | for (i = 0; i < hash->size; i++) { |
| 526 | head = &hash->table[i]; |
| 527 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 528 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 529 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 530 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
| 531 | ret = orig_node_add_if(orig_node, max_if_num); |
| 532 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
| 533 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 534 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 535 | goto err; |
| 536 | } |
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 | } |
| 539 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 540 | return 0; |
| 541 | |
| 542 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 543 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 544 | return -ENOMEM; |
| 545 | } |
| 546 | |
| 547 | static int orig_node_del_if(struct orig_node *orig_node, |
| 548 | int max_if_num, int del_if_num) |
| 549 | { |
| 550 | void *data_ptr = NULL; |
| 551 | int chunk_size; |
| 552 | |
| 553 | /* last interface was removed */ |
| 554 | if (max_if_num == 0) |
| 555 | goto free_bcast_own; |
| 556 | |
| 557 | chunk_size = sizeof(unsigned long) * NUM_WORDS; |
| 558 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 559 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 560 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 561 | |
| 562 | /* copy first part */ |
| 563 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); |
| 564 | |
| 565 | /* copy second part */ |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 566 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 567 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
| 568 | (max_if_num - del_if_num) * chunk_size); |
| 569 | |
| 570 | free_bcast_own: |
| 571 | kfree(orig_node->bcast_own); |
| 572 | orig_node->bcast_own = data_ptr; |
| 573 | |
| 574 | if (max_if_num == 0) |
| 575 | goto free_own_sum; |
| 576 | |
| 577 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 578 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 579 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 580 | |
| 581 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 582 | del_if_num * sizeof(uint8_t)); |
| 583 | |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 584 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 585 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
| 586 | (max_if_num - del_if_num) * sizeof(uint8_t)); |
| 587 | |
| 588 | free_own_sum: |
| 589 | kfree(orig_node->bcast_own_sum); |
| 590 | orig_node->bcast_own_sum = data_ptr; |
| 591 | |
| 592 | return 0; |
| 593 | } |
| 594 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 595 | int batadv_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] | 596 | { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 597 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 598 | struct hashtable_t *hash = bat_priv->orig_hash; |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 599 | struct hlist_node *node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 600 | struct hlist_head *head; |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 601 | struct hard_iface *hard_iface_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 602 | struct orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 603 | uint32_t i; |
| 604 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 605 | |
| 606 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 607 | * if_num |
| 608 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 609 | for (i = 0; i < hash->size; i++) { |
| 610 | head = &hash->table[i]; |
| 611 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 612 | rcu_read_lock(); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 613 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 614 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 615 | ret = orig_node_del_if(orig_node, max_if_num, |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 616 | hard_iface->if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 617 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 618 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 619 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 620 | goto err; |
| 621 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 622 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 623 | } |
| 624 | |
| 625 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ |
| 626 | rcu_read_lock(); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 627 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 628 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) |
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 == hard_iface_tmp) |
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->soft_iface != hard_iface_tmp->soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 635 | continue; |
| 636 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 637 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
| 638 | hard_iface_tmp->if_num--; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 639 | } |
| 640 | rcu_read_unlock(); |
| 641 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 642 | hard_iface->if_num = -1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 643 | return 0; |
| 644 | |
| 645 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 646 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 647 | return -ENOMEM; |
| 648 | } |