Antonio Quartulli | 0b87393 | 2013-01-04 03:05:31 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2009-2013 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" |
Antonio Quartulli | 785ea11 | 2011-11-23 11:35:44 +0100 | [diff] [blame] | 21 | #include "distributed-arp-table.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 22 | #include "originator.h" |
| 23 | #include "hash.h" |
| 24 | #include "translation-table.h" |
| 25 | #include "routing.h" |
| 26 | #include "gateway_client.h" |
| 27 | #include "hard-interface.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 28 | #include "soft-interface.h" |
Simon Wunderlich | 2372138 | 2012-01-22 20:00:19 +0100 | [diff] [blame] | 29 | #include "bridge_loop_avoidance.h" |
Martin Hundebøll | d56b170 | 2013-01-25 11:12:39 +0100 | [diff] [blame] | 30 | #include "network-coding.h" |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 31 | #include "fragmentation.h" |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 32 | |
Antonio Quartulli | dec0507 | 2012-11-10 11:00:32 +0100 | [diff] [blame] | 33 | /* hash class keys */ |
| 34 | static struct lock_class_key batadv_orig_hash_lock_class_key; |
| 35 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 36 | static void batadv_purge_orig(struct work_struct *work); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 37 | |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 38 | /* returns 1 if they are the same originator */ |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 39 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 40 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 41 | const void *data1 = container_of(node, struct batadv_orig_node, |
| 42 | hash_entry); |
Sven Eckelmann | b8e2dd1 | 2011-06-15 15:08:59 +0200 | [diff] [blame] | 43 | |
| 44 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); |
| 45 | } |
| 46 | |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 47 | /** |
| 48 | * batadv_orig_node_vlan_get - get an orig_node_vlan object |
| 49 | * @orig_node: the originator serving the VLAN |
| 50 | * @vid: the VLAN identifier |
| 51 | * |
| 52 | * Returns the vlan object identified by vid and belonging to orig_node or NULL |
| 53 | * if it does not exist. |
| 54 | */ |
| 55 | struct batadv_orig_node_vlan * |
| 56 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, |
| 57 | unsigned short vid) |
| 58 | { |
| 59 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; |
| 60 | |
| 61 | rcu_read_lock(); |
| 62 | list_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { |
| 63 | if (tmp->vid != vid) |
| 64 | continue; |
| 65 | |
| 66 | if (!atomic_inc_not_zero(&tmp->refcount)) |
| 67 | continue; |
| 68 | |
| 69 | vlan = tmp; |
| 70 | |
| 71 | break; |
| 72 | } |
| 73 | rcu_read_unlock(); |
| 74 | |
| 75 | return vlan; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan |
| 80 | * object |
| 81 | * @orig_node: the originator serving the VLAN |
| 82 | * @vid: the VLAN identifier |
| 83 | * |
| 84 | * Returns NULL in case of failure or the vlan object identified by vid and |
| 85 | * belonging to orig_node otherwise. The object is created and added to the list |
| 86 | * if it does not exist. |
| 87 | * |
| 88 | * The object is returned with refcounter increased by 1. |
| 89 | */ |
| 90 | struct batadv_orig_node_vlan * |
| 91 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, |
| 92 | unsigned short vid) |
| 93 | { |
| 94 | struct batadv_orig_node_vlan *vlan; |
| 95 | |
| 96 | spin_lock_bh(&orig_node->vlan_list_lock); |
| 97 | |
| 98 | /* first look if an object for this vid already exists */ |
| 99 | vlan = batadv_orig_node_vlan_get(orig_node, vid); |
| 100 | if (vlan) |
| 101 | goto out; |
| 102 | |
| 103 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); |
| 104 | if (!vlan) |
| 105 | goto out; |
| 106 | |
| 107 | atomic_set(&vlan->refcount, 2); |
| 108 | vlan->vid = vid; |
| 109 | |
| 110 | list_add_rcu(&vlan->list, &orig_node->vlan_list); |
| 111 | |
| 112 | out: |
| 113 | spin_unlock_bh(&orig_node->vlan_list_lock); |
| 114 | |
| 115 | return vlan; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * batadv_orig_node_vlan_free_ref - decrement the refcounter and possibly free |
| 120 | * the originator-vlan object |
| 121 | * @orig_vlan: the originator-vlan object to release |
| 122 | */ |
| 123 | void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan *orig_vlan) |
| 124 | { |
| 125 | if (atomic_dec_and_test(&orig_vlan->refcount)) |
| 126 | kfree_rcu(orig_vlan, rcu); |
| 127 | } |
| 128 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 129 | int batadv_originator_init(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 130 | { |
| 131 | if (bat_priv->orig_hash) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 132 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 133 | |
Sven Eckelmann | 1a8eaf0 | 2012-05-12 02:09:32 +0200 | [diff] [blame] | 134 | bat_priv->orig_hash = batadv_hash_new(1024); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 135 | |
| 136 | if (!bat_priv->orig_hash) |
| 137 | goto err; |
| 138 | |
Antonio Quartulli | dec0507 | 2012-11-10 11:00:32 +0100 | [diff] [blame] | 139 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
| 140 | &batadv_orig_hash_lock_class_key); |
| 141 | |
Antonio Quartulli | 7241444 | 2012-12-25 13:14:37 +0100 | [diff] [blame] | 142 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
| 143 | queue_delayed_work(batadv_event_workqueue, |
| 144 | &bat_priv->orig_work, |
| 145 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); |
| 146 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 147 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 148 | |
| 149 | err: |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 150 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 151 | } |
| 152 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 153 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 154 | { |
Marek Lindner | 44524fc | 2011-02-10 14:33:53 +0000 | [diff] [blame] | 155 | if (atomic_dec_and_test(&neigh_node->refcount)) |
Paul E. McKenney | ae179ae | 2011-05-01 23:27:50 -0700 | [diff] [blame] | 156 | kfree_rcu(neigh_node, rcu); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 157 | } |
| 158 | |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 159 | /* increases the refcounter of a found router */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 160 | struct batadv_neigh_node * |
| 161 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 162 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 163 | struct batadv_neigh_node *router; |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 164 | |
| 165 | rcu_read_lock(); |
| 166 | router = rcu_dereference(orig_node->router); |
| 167 | |
| 168 | if (router && !atomic_inc_not_zero(&router->refcount)) |
| 169 | router = NULL; |
| 170 | |
| 171 | rcu_read_unlock(); |
| 172 | return router; |
| 173 | } |
| 174 | |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 175 | /** |
| 176 | * batadv_neigh_node_new - create and init a new neigh_node object |
| 177 | * @hard_iface: the interface where the neighbour is connected to |
| 178 | * @neigh_addr: the mac address of the neighbour interface |
| 179 | * @orig_node: originator object representing the neighbour |
| 180 | * |
| 181 | * Allocates a new neigh_node object and initialises all the generic fields. |
| 182 | * Returns the new object or NULL on failure. |
| 183 | */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 184 | struct batadv_neigh_node * |
| 185 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 186 | const uint8_t *neigh_addr, |
| 187 | struct batadv_orig_node *orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 188 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 189 | struct batadv_neigh_node *neigh_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 190 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 191 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 192 | if (!neigh_node) |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 193 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 194 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 195 | INIT_HLIST_NODE(&neigh_node->list); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 196 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 197 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 198 | neigh_node->if_incoming = hard_iface; |
| 199 | neigh_node->orig_node = orig_node; |
| 200 | |
| 201 | INIT_LIST_HEAD(&neigh_node->bonding_list); |
Marek Lindner | 1605d0d | 2011-02-18 12:28:11 +0000 | [diff] [blame] | 202 | |
| 203 | /* extra reference for return */ |
| 204 | atomic_set(&neigh_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 205 | |
Marek Lindner | 7ae8b28 | 2012-03-01 15:35:21 +0800 | [diff] [blame] | 206 | out: |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 207 | return neigh_node; |
| 208 | } |
| 209 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 210 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 211 | { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 212 | struct hlist_node *node_tmp; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 213 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
| 214 | struct batadv_orig_node *orig_node; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 215 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 216 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 217 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 218 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 219 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 220 | /* for all bonding members ... */ |
| 221 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, |
| 222 | &orig_node->bond_list, bonding_list) { |
| 223 | list_del_rcu(&neigh_node->bonding_list); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 224 | batadv_neigh_node_free_ref(neigh_node); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 225 | } |
| 226 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 227 | /* for all neighbors towards this originator ... */ |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 228 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 229 | &orig_node->neigh_list, list) { |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 230 | hlist_del_rcu(&neigh_node->list); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 231 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 232 | } |
| 233 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 234 | spin_unlock_bh(&orig_node->neigh_list_lock); |
| 235 | |
Martin Hundebøll | d56b170 | 2013-01-25 11:12:39 +0100 | [diff] [blame] | 236 | /* Free nc_nodes */ |
| 237 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); |
| 238 | |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 239 | batadv_frag_purge_orig(orig_node, NULL); |
| 240 | |
Antonio Quartulli | 95fb130 | 2013-08-07 18:28:55 +0200 | [diff] [blame] | 241 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, -1, |
Sven Eckelmann | 08c36d3 | 2012-05-12 02:09:39 +0200 | [diff] [blame] | 242 | "originator timed out"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 243 | |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 244 | kfree(orig_node->tt_buff); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 245 | kfree(orig_node->bcast_own); |
| 246 | kfree(orig_node->bcast_own_sum); |
| 247 | kfree(orig_node); |
| 248 | } |
| 249 | |
Linus LĂĽssing | 7282222 | 2013-04-15 21:43:29 +0800 | [diff] [blame] | 250 | /** |
| 251 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly |
| 252 | * schedule an rcu callback for freeing it |
| 253 | * @orig_node: the orig node to free |
| 254 | */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 255 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 256 | { |
| 257 | if (atomic_dec_and_test(&orig_node->refcount)) |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 258 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 259 | } |
| 260 | |
Linus LĂĽssing | 7282222 | 2013-04-15 21:43:29 +0800 | [diff] [blame] | 261 | /** |
| 262 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and |
| 263 | * possibly free it (without rcu callback) |
| 264 | * @orig_node: the orig node to free |
| 265 | */ |
| 266 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) |
| 267 | { |
| 268 | if (atomic_dec_and_test(&orig_node->refcount)) |
| 269 | batadv_orig_node_free_rcu(&orig_node->rcu); |
| 270 | } |
| 271 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 272 | void batadv_originator_free(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 273 | { |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 274 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 275 | struct hlist_node *node_tmp; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 276 | struct hlist_head *head; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 277 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 278 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 279 | uint32_t i; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 280 | |
| 281 | if (!hash) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 282 | return; |
| 283 | |
| 284 | cancel_delayed_work_sync(&bat_priv->orig_work); |
| 285 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 286 | bat_priv->orig_hash = NULL; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 287 | |
| 288 | for (i = 0; i < hash->size; i++) { |
| 289 | head = &hash->table[i]; |
| 290 | list_lock = &hash->list_locks[i]; |
| 291 | |
| 292 | spin_lock_bh(list_lock); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 293 | hlist_for_each_entry_safe(orig_node, node_tmp, |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 294 | head, hash_entry) { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 295 | hlist_del_rcu(&orig_node->hash_entry); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 296 | batadv_orig_node_free_ref(orig_node); |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 297 | } |
| 298 | spin_unlock_bh(list_lock); |
| 299 | } |
| 300 | |
Sven Eckelmann | 1a8eaf0 | 2012-05-12 02:09:32 +0200 | [diff] [blame] | 301 | batadv_hash_destroy(hash); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | /* this function finds or creates an originator entry for the given |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 305 | * address if it does not exits |
| 306 | */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 307 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
| 308 | const uint8_t *addr) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 309 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 310 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 311 | struct batadv_orig_node_vlan *vlan; |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 312 | int size, i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 313 | int hash_added; |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 314 | unsigned long reset_time; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 315 | |
Sven Eckelmann | da64119 | 2012-05-12 13:48:56 +0200 | [diff] [blame] | 316 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 317 | if (orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 318 | return orig_node; |
| 319 | |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 320 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
| 321 | "Creating new originator: %pM\n", addr); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 322 | |
Sven Eckelmann | 704509b | 2011-05-14 23:14:54 +0200 | [diff] [blame] | 323 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 324 | if (!orig_node) |
| 325 | return NULL; |
| 326 | |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 327 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 328 | INIT_LIST_HEAD(&orig_node->bond_list); |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 329 | INIT_LIST_HEAD(&orig_node->vlan_list); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 330 | spin_lock_init(&orig_node->ogm_cnt_lock); |
Marek Lindner | f3e0008 | 2011-01-25 21:52:11 +0000 | [diff] [blame] | 331 | spin_lock_init(&orig_node->bcast_seqno_lock); |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 332 | spin_lock_init(&orig_node->neigh_list_lock); |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 333 | spin_lock_init(&orig_node->tt_buff_lock); |
Antonio Quartulli | a70a9aa | 2013-07-30 22:16:24 +0200 | [diff] [blame] | 334 | spin_lock_init(&orig_node->tt_lock); |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 335 | spin_lock_init(&orig_node->vlan_list_lock); |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 336 | |
Martin Hundebøll | d56b170 | 2013-01-25 11:12:39 +0100 | [diff] [blame] | 337 | batadv_nc_init_orig(orig_node); |
| 338 | |
Marek Lindner | 7b36e8e | 2011-02-18 12:28:10 +0000 | [diff] [blame] | 339 | /* extra reference for return */ |
| 340 | atomic_set(&orig_node->refcount, 2); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 341 | |
Antonio Quartulli | 1707157 | 2011-11-07 16:36:40 +0100 | [diff] [blame] | 342 | orig_node->tt_initialised = false; |
Marek Lindner | 16b1aba | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 343 | orig_node->bat_priv = bat_priv; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 344 | memcpy(orig_node->orig, addr, ETH_ALEN); |
Antonio Quartulli | 785ea11 | 2011-11-23 11:35:44 +0100 | [diff] [blame] | 345 | batadv_dat_init_orig_node_addr(orig_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 346 | orig_node->router = NULL; |
Antonio Quartulli | c8c991b | 2011-07-07 01:40:57 +0200 | [diff] [blame] | 347 | atomic_set(&orig_node->last_ttvn, 0); |
Antonio Quartulli | 2dafb49 | 2011-05-05 08:42:45 +0200 | [diff] [blame] | 348 | orig_node->tt_buff = NULL; |
Antonio Quartulli | a73105b | 2011-04-27 14:27:44 +0200 | [diff] [blame] | 349 | orig_node->tt_buff_len = 0; |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 350 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
| 351 | orig_node->bcast_seqno_reset = reset_time; |
| 352 | orig_node->batman_seqno_reset = reset_time; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 353 | |
Simon Wunderlich | a4c135c | 2011-01-19 20:01:43 +0000 | [diff] [blame] | 354 | atomic_set(&orig_node->bond_candidates, 0); |
| 355 | |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 356 | /* create a vlan object for the "untagged" LAN */ |
| 357 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); |
| 358 | if (!vlan) |
| 359 | goto free_orig_node; |
| 360 | /* batadv_orig_node_vlan_new() increases the refcounter. |
| 361 | * Immediately release vlan since it is not needed anymore in this |
| 362 | * context |
| 363 | */ |
| 364 | batadv_orig_node_vlan_free_ref(vlan); |
| 365 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 366 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 367 | |
| 368 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); |
| 369 | if (!orig_node->bcast_own) |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 370 | goto free_vlan; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 371 | |
| 372 | size = bat_priv->num_ifaces * sizeof(uint8_t); |
| 373 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); |
| 374 | |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 375 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
| 376 | INIT_HLIST_HEAD(&orig_node->fragments[i].head); |
| 377 | spin_lock_init(&orig_node->fragments[i].lock); |
| 378 | orig_node->fragments[i].size = 0; |
| 379 | } |
| 380 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 381 | if (!orig_node->bcast_own_sum) |
| 382 | goto free_bcast_own; |
| 383 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 384 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
Sven Eckelmann | da64119 | 2012-05-12 13:48:56 +0200 | [diff] [blame] | 385 | batadv_choose_orig, orig_node, |
Sven Eckelmann | c0a5592 | 2012-05-12 13:48:55 +0200 | [diff] [blame] | 386 | &orig_node->hash_entry); |
Antonio Quartulli | 1a1f37d | 2011-07-10 00:36:36 +0200 | [diff] [blame] | 387 | if (hash_added != 0) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 388 | goto free_bcast_own_sum; |
| 389 | |
| 390 | return orig_node; |
| 391 | free_bcast_own_sum: |
| 392 | kfree(orig_node->bcast_own_sum); |
| 393 | free_bcast_own: |
| 394 | kfree(orig_node->bcast_own); |
Antonio Quartulli | 7ea7b4a | 2013-07-30 22:16:25 +0200 | [diff] [blame] | 395 | free_vlan: |
| 396 | batadv_orig_node_vlan_free_ref(vlan); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 397 | free_orig_node: |
| 398 | kfree(orig_node); |
| 399 | return NULL; |
| 400 | } |
| 401 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 402 | static bool |
| 403 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, |
| 404 | struct batadv_orig_node *orig_node, |
| 405 | struct batadv_neigh_node **best_neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 406 | { |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 407 | struct hlist_node *node_tmp; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 408 | struct batadv_neigh_node *neigh_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 409 | bool neigh_purged = false; |
Marek Lindner | 0b0094e | 2012-03-01 15:35:20 +0800 | [diff] [blame] | 410 | unsigned long last_seen; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 411 | struct batadv_hard_iface *if_incoming; |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 412 | uint8_t best_metric = 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 413 | |
| 414 | *best_neigh_node = NULL; |
| 415 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 416 | spin_lock_bh(&orig_node->neigh_list_lock); |
| 417 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 418 | /* for all neighbors towards this originator ... */ |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 419 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 420 | &orig_node->neigh_list, list) { |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 421 | last_seen = neigh_node->last_seen; |
| 422 | if_incoming = neigh_node->if_incoming; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 423 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 424 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 425 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
| 426 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || |
| 427 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 428 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
| 429 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || |
| 430 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 431 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 432 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
| 433 | orig_node->orig, neigh_node->addr, |
| 434 | if_incoming->net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 435 | else |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 436 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 437 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
| 438 | orig_node->orig, neigh_node->addr, |
| 439 | jiffies_to_msecs(last_seen)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 440 | |
| 441 | neigh_purged = true; |
Marek Lindner | 9591a79 | 2010-12-12 21:57:11 +0000 | [diff] [blame] | 442 | |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 443 | hlist_del_rcu(&neigh_node->list); |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 444 | batadv_bonding_candidate_del(orig_node, neigh_node); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 445 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 446 | } else { |
| 447 | if ((!*best_neigh_node) || |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 448 | (neigh_node->bat_iv.tq_avg > best_metric)) { |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 449 | *best_neigh_node = neigh_node; |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 450 | best_metric = neigh_node->bat_iv.tq_avg; |
| 451 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 452 | } |
| 453 | } |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 454 | |
| 455 | spin_unlock_bh(&orig_node->neigh_list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 456 | return neigh_purged; |
| 457 | } |
| 458 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 459 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
| 460 | struct batadv_orig_node *orig_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 461 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 462 | struct batadv_neigh_node *best_neigh_node; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 463 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 464 | if (batadv_has_timed_out(orig_node->last_seen, |
| 465 | 2 * BATADV_PURGE_TIMEOUT)) { |
Sven Eckelmann | 39c75a5 | 2012-06-03 22:19:22 +0200 | [diff] [blame] | 466 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
Sven Eckelmann | 1eda58b | 2012-05-12 13:48:58 +0200 | [diff] [blame] | 467 | "Originator timeout: originator %pM, last_seen %u\n", |
| 468 | orig_node->orig, |
| 469 | jiffies_to_msecs(orig_node->last_seen)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 470 | return true; |
| 471 | } else { |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 472 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
| 473 | &best_neigh_node)) |
Sven Eckelmann | 30d3c51 | 2012-05-12 02:09:36 +0200 | [diff] [blame] | 474 | batadv_update_route(bat_priv, orig_node, |
| 475 | best_neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | return false; |
| 479 | } |
| 480 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 481 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 482 | { |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 483 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 484 | struct hlist_node *node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 485 | struct hlist_head *head; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 486 | spinlock_t *list_lock; /* spinlock to protect write access */ |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 487 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 488 | uint32_t i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 489 | |
| 490 | if (!hash) |
| 491 | return; |
| 492 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 493 | /* for all origins... */ |
| 494 | for (i = 0; i < hash->size; i++) { |
| 495 | head = &hash->table[i]; |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 496 | list_lock = &hash->list_locks[i]; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 497 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 498 | spin_lock_bh(list_lock); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 499 | hlist_for_each_entry_safe(orig_node, node_tmp, |
Marek Lindner | 7aadf88 | 2011-02-18 12:28:09 +0000 | [diff] [blame] | 500 | head, hash_entry) { |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 501 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
Marek Lindner | 414254e | 2013-04-23 21:39:58 +0800 | [diff] [blame] | 502 | batadv_gw_node_delete(bat_priv, orig_node); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 503 | hlist_del_rcu(&orig_node->hash_entry); |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 504 | batadv_orig_node_free_ref(orig_node); |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 505 | continue; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 506 | } |
Martin Hundebøll | 610bfc6bc | 2013-05-23 16:53:02 +0200 | [diff] [blame] | 507 | |
| 508 | batadv_frag_purge_orig(orig_node, |
| 509 | batadv_frag_check_entry); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 510 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 511 | spin_unlock_bh(list_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 512 | } |
| 513 | |
Sven Eckelmann | 7cf06bc | 2012-05-12 02:09:29 +0200 | [diff] [blame] | 514 | batadv_gw_node_purge(bat_priv); |
| 515 | batadv_gw_election(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 516 | } |
| 517 | |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 518 | static void batadv_purge_orig(struct work_struct *work) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 519 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 520 | struct delayed_work *delayed_work; |
| 521 | struct batadv_priv *bat_priv; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 522 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 523 | delayed_work = container_of(work, struct delayed_work, work); |
| 524 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 525 | _batadv_purge_orig(bat_priv); |
Antonio Quartulli | 7241444 | 2012-12-25 13:14:37 +0100 | [diff] [blame] | 526 | queue_delayed_work(batadv_event_workqueue, |
| 527 | &bat_priv->orig_work, |
| 528 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 529 | } |
| 530 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 531 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 532 | { |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 533 | _batadv_purge_orig(bat_priv); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 534 | } |
| 535 | |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 536 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 537 | { |
| 538 | struct net_device *net_dev = (struct net_device *)seq->private; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 539 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 540 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 541 | struct hlist_head *head; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 542 | struct batadv_hard_iface *primary_if; |
| 543 | struct batadv_orig_node *orig_node; |
| 544 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 545 | int batman_count = 0; |
| 546 | int last_seen_secs; |
| 547 | int last_seen_msecs; |
Sven Eckelmann | 0aca236 | 2012-06-19 20:26:30 +0200 | [diff] [blame] | 548 | unsigned long last_seen_jiffies; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 549 | uint32_t i; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 550 | |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 551 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
| 552 | if (!primary_if) |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 553 | goto out; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 554 | |
Sven Eckelmann | 44c4349 | 2011-07-05 10:42:51 +0200 | [diff] [blame] | 555 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 556 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 557 | primary_if->net_dev->dev_addr, net_dev->name); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 558 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 559 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
| 560 | "Nexthop", "outgoingIF", "Potential nexthops"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 561 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 562 | for (i = 0; i < hash->size; i++) { |
| 563 | head = &hash->table[i]; |
| 564 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 565 | rcu_read_lock(); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 566 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 567 | neigh_node = batadv_orig_node_get_router(orig_node); |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 568 | if (!neigh_node) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 569 | continue; |
| 570 | |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 571 | if (neigh_node->bat_iv.tq_avg == 0) |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 572 | goto next; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 573 | |
Sven Eckelmann | 0aca236 | 2012-06-19 20:26:30 +0200 | [diff] [blame] | 574 | last_seen_jiffies = jiffies - orig_node->last_seen; |
| 575 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); |
| 576 | last_seen_secs = last_seen_msecs / 1000; |
| 577 | last_seen_msecs = last_seen_msecs % 1000; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 578 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 579 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
| 580 | orig_node->orig, last_seen_secs, |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 581 | last_seen_msecs, neigh_node->bat_iv.tq_avg, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 582 | neigh_node->addr, |
| 583 | neigh_node->if_incoming->net_dev->name); |
| 584 | |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 585 | hlist_for_each_entry_rcu(neigh_node_tmp, |
Marek Lindner | f987ed6 | 2010-12-12 21:57:12 +0000 | [diff] [blame] | 586 | &orig_node->neigh_list, list) { |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 587 | seq_printf(seq, " %pM (%3i)", |
| 588 | neigh_node_tmp->addr, |
Antonio Quartulli | 0538f75 | 2013-09-02 12:15:01 +0200 | [diff] [blame^] | 589 | neigh_node_tmp->bat_iv.tq_avg); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 590 | } |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 591 | |
Antonio Quartulli | 0c81465 | 2013-03-21 09:23:29 +0100 | [diff] [blame] | 592 | seq_puts(seq, "\n"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 593 | batman_count++; |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 594 | |
| 595 | next: |
Sven Eckelmann | 7d211ef | 2012-05-12 02:09:34 +0200 | [diff] [blame] | 596 | batadv_neigh_node_free_ref(neigh_node); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 597 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 598 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 599 | } |
| 600 | |
Linus LĂĽssing | e1a5382f | 2011-03-14 22:43:37 +0000 | [diff] [blame] | 601 | if (batman_count == 0) |
Antonio Quartulli | 0c81465 | 2013-03-21 09:23:29 +0100 | [diff] [blame] | 602 | seq_puts(seq, "No batman nodes in range ...\n"); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 603 | |
Marek Lindner | 32ae9b2 | 2011-04-20 15:40:58 +0200 | [diff] [blame] | 604 | out: |
| 605 | if (primary_if) |
Sven Eckelmann | e5d8925 | 2012-05-12 13:48:54 +0200 | [diff] [blame] | 606 | batadv_hardif_free_ref(primary_if); |
Marek Lindner | 30da63a | 2012-08-03 17:15:46 +0200 | [diff] [blame] | 607 | return 0; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 608 | } |
| 609 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 610 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
| 611 | int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 612 | { |
| 613 | void *data_ptr; |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 614 | size_t data_size, old_size; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 615 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 616 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
| 617 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; |
| 618 | data_ptr = kmalloc(data_size, GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 619 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 620 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 621 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 622 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 623 | kfree(orig_node->bcast_own); |
| 624 | orig_node->bcast_own = data_ptr; |
| 625 | |
| 626 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 627 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 628 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 629 | |
| 630 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 631 | (max_if_num - 1) * sizeof(uint8_t)); |
| 632 | kfree(orig_node->bcast_own_sum); |
| 633 | orig_node->bcast_own_sum = data_ptr; |
| 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 638 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
| 639 | int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 640 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 641 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 642 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 643 | struct hlist_head *head; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 644 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 645 | uint32_t i; |
| 646 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 647 | |
| 648 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 649 | * if_num |
| 650 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 651 | for (i = 0; i < hash->size; i++) { |
| 652 | head = &hash->table[i]; |
| 653 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 654 | rcu_read_lock(); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 655 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 656 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 657 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 658 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
| 659 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 660 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 661 | goto err; |
| 662 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 663 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 664 | } |
| 665 | |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 666 | return 0; |
| 667 | |
| 668 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 669 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 670 | return -ENOMEM; |
| 671 | } |
| 672 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 673 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 674 | int max_if_num, int del_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 675 | { |
| 676 | void *data_ptr = NULL; |
| 677 | int chunk_size; |
| 678 | |
| 679 | /* last interface was removed */ |
| 680 | if (max_if_num == 0) |
| 681 | goto free_bcast_own; |
| 682 | |
Sven Eckelmann | 42d0b04 | 2012-06-03 22:19:17 +0200 | [diff] [blame] | 683 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 684 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 685 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 686 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 687 | |
| 688 | /* copy first part */ |
| 689 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); |
| 690 | |
| 691 | /* copy second part */ |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 692 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 693 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
| 694 | (max_if_num - del_if_num) * chunk_size); |
| 695 | |
| 696 | free_bcast_own: |
| 697 | kfree(orig_node->bcast_own); |
| 698 | orig_node->bcast_own = data_ptr; |
| 699 | |
| 700 | if (max_if_num == 0) |
| 701 | goto free_own_sum; |
| 702 | |
| 703 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); |
Joe Perches | 320f422 | 2011-08-29 14:17:24 -0700 | [diff] [blame] | 704 | if (!data_ptr) |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 705 | return -ENOMEM; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 706 | |
| 707 | memcpy(data_ptr, orig_node->bcast_own_sum, |
| 708 | del_if_num * sizeof(uint8_t)); |
| 709 | |
Sven Eckelmann | 38e3c5f | 2011-05-14 23:14:49 +0200 | [diff] [blame] | 710 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 711 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
| 712 | (max_if_num - del_if_num) * sizeof(uint8_t)); |
| 713 | |
| 714 | free_own_sum: |
| 715 | kfree(orig_node->bcast_own_sum); |
| 716 | orig_node->bcast_own_sum = data_ptr; |
| 717 | |
| 718 | return 0; |
| 719 | } |
| 720 | |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 721 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
| 722 | int max_if_num) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 723 | { |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 724 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
Sven Eckelmann | 5bf74e9 | 2012-06-05 22:31:28 +0200 | [diff] [blame] | 725 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 726 | struct hlist_head *head; |
Sven Eckelmann | 56303d3 | 2012-06-05 22:31:31 +0200 | [diff] [blame] | 727 | struct batadv_hard_iface *hard_iface_tmp; |
| 728 | struct batadv_orig_node *orig_node; |
Antonio Quartulli | c90681b | 2011-10-05 17:05:25 +0200 | [diff] [blame] | 729 | uint32_t i; |
| 730 | int ret; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 731 | |
| 732 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on |
Sven Eckelmann | 9cfc7bd | 2012-05-12 02:09:43 +0200 | [diff] [blame] | 733 | * if_num |
| 734 | */ |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 735 | for (i = 0; i < hash->size; i++) { |
| 736 | head = &hash->table[i]; |
| 737 | |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 738 | rcu_read_lock(); |
Sasha Levin | b67bfe0 | 2013-02-27 17:06:00 -0800 | [diff] [blame] | 739 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 740 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | 03fc7f8 | 2012-05-12 18:34:00 +0200 | [diff] [blame] | 741 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
| 742 | hard_iface->if_num); |
Marek Lindner | 2ae2daf | 2011-01-19 20:01:42 +0000 | [diff] [blame] | 743 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 744 | |
Sven Eckelmann | 5346c35 | 2012-05-05 13:27:28 +0200 | [diff] [blame] | 745 | if (ret == -ENOMEM) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 746 | goto err; |
| 747 | } |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 748 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ |
| 752 | rcu_read_lock(); |
Sven Eckelmann | 3193e8f | 2012-05-12 02:09:42 +0200 | [diff] [blame] | 753 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
Sven Eckelmann | e9a4f29 | 2012-06-03 22:19:19 +0200 | [diff] [blame] | 754 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 755 | continue; |
| 756 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 757 | if (hard_iface == hard_iface_tmp) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 758 | continue; |
| 759 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 760 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 761 | continue; |
| 762 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 763 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
| 764 | hard_iface_tmp->if_num--; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 765 | } |
| 766 | rcu_read_unlock(); |
| 767 | |
Marek Lindner | e6c10f4 | 2011-02-18 12:33:20 +0000 | [diff] [blame] | 768 | hard_iface->if_num = -1; |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 769 | return 0; |
| 770 | |
| 771 | err: |
Marek Lindner | fb778ea | 2011-01-19 20:01:40 +0000 | [diff] [blame] | 772 | rcu_read_unlock(); |
Sven Eckelmann | c6c8fea | 2010-12-13 11:19:28 +0000 | [diff] [blame] | 773 | return -ENOMEM; |
| 774 | } |