blob: 585e684a380b8c0d70ba69a56f0cb6496cbb41e9 [file] [log] [blame]
Antonio Quartulli0b873932013-01-04 03:05:31 +01001/* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +00002 *
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 Eckelmannc6c8fea2010-12-13 11:19:28 +000018 */
19
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000020#include "main.h"
Antonio Quartulli785ea112011-11-23 11:35:44 +010021#include "distributed-arp-table.h"
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000022#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"
28#include "unicast.h"
29#include "soft-interface.h"
Simon Wunderlich23721382012-01-22 20:00:19 +010030#include "bridge_loop_avoidance.h"
Martin Hundebølld56b1702013-01-25 11:12:39 +010031#include "network-coding.h"
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000032
Antonio Quartullidec05072012-11-10 11:00:32 +010033/* hash class keys */
34static struct lock_class_key batadv_orig_hash_lock_class_key;
35
Sven Eckelmann03fc7f82012-05-12 18:34:00 +020036static void batadv_purge_orig(struct work_struct *work);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000037
Sven Eckelmannb8e2dd12011-06-15 15:08:59 +020038/* returns 1 if they are the same originator */
Sven Eckelmann03fc7f82012-05-12 18:34:00 +020039static int batadv_compare_orig(const struct hlist_node *node, const void *data2)
Sven Eckelmannb8e2dd12011-06-15 15:08:59 +020040{
Sven Eckelmann56303d32012-06-05 22:31:31 +020041 const void *data1 = container_of(node, struct batadv_orig_node,
42 hash_entry);
Sven Eckelmannb8e2dd12011-06-15 15:08:59 +020043
44 return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
45}
46
Sven Eckelmann56303d32012-06-05 22:31:31 +020047int batadv_originator_init(struct batadv_priv *bat_priv)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000048{
49 if (bat_priv->orig_hash)
Sven Eckelmann5346c352012-05-05 13:27:28 +020050 return 0;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000051
Sven Eckelmann1a8eaf02012-05-12 02:09:32 +020052 bat_priv->orig_hash = batadv_hash_new(1024);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000053
54 if (!bat_priv->orig_hash)
55 goto err;
56
Antonio Quartullidec05072012-11-10 11:00:32 +010057 batadv_hash_set_lock_class(bat_priv->orig_hash,
58 &batadv_orig_hash_lock_class_key);
59
Antonio Quartulli72414442012-12-25 13:14:37 +010060 INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig);
61 queue_delayed_work(batadv_event_workqueue,
62 &bat_priv->orig_work,
63 msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD));
64
Sven Eckelmann5346c352012-05-05 13:27:28 +020065 return 0;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000066
67err:
Sven Eckelmann5346c352012-05-05 13:27:28 +020068 return -ENOMEM;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000069}
70
Sven Eckelmann56303d32012-06-05 22:31:31 +020071void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node)
Simon Wunderlicha4c135c2011-01-19 20:01:43 +000072{
Marek Lindner44524fc2011-02-10 14:33:53 +000073 if (atomic_dec_and_test(&neigh_node->refcount))
Paul E. McKenneyae179ae2011-05-01 23:27:50 -070074 kfree_rcu(neigh_node, rcu);
Simon Wunderlicha4c135c2011-01-19 20:01:43 +000075}
76
Linus Lüssinge1a5382f2011-03-14 22:43:37 +000077/* increases the refcounter of a found router */
Sven Eckelmann56303d32012-06-05 22:31:31 +020078struct batadv_neigh_node *
79batadv_orig_node_get_router(struct batadv_orig_node *orig_node)
Linus Lüssinge1a5382f2011-03-14 22:43:37 +000080{
Sven Eckelmann56303d32012-06-05 22:31:31 +020081 struct batadv_neigh_node *router;
Linus Lüssinge1a5382f2011-03-14 22:43:37 +000082
83 rcu_read_lock();
84 router = rcu_dereference(orig_node->router);
85
86 if (router && !atomic_inc_not_zero(&router->refcount))
87 router = NULL;
88
89 rcu_read_unlock();
90 return router;
91}
92
Sven Eckelmann56303d32012-06-05 22:31:31 +020093struct batadv_neigh_node *
94batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
95 const uint8_t *neigh_addr, uint32_t seqno)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000096{
Sven Eckelmann56303d32012-06-05 22:31:31 +020097 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
98 struct batadv_neigh_node *neigh_node;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +000099
Sven Eckelmann704509b2011-05-14 23:14:54 +0200100 neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000101 if (!neigh_node)
Marek Lindner7ae8b282012-03-01 15:35:21 +0800102 goto out;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000103
Marek Lindner9591a792010-12-12 21:57:11 +0000104 INIT_HLIST_NODE(&neigh_node->list);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000105
Marek Lindner7ae8b282012-03-01 15:35:21 +0800106 memcpy(neigh_node->addr, neigh_addr, ETH_ALEN);
Marek Lindnere3b0d0d2012-03-17 15:28:32 +0800107 spin_lock_init(&neigh_node->lq_update_lock);
Marek Lindner1605d0d2011-02-18 12:28:11 +0000108
109 /* extra reference for return */
110 atomic_set(&neigh_node->refcount, 2);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000111
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200112 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200113 "Creating new neighbor %pM, initial seqno %d\n",
114 neigh_addr, seqno);
Marek Lindner7ae8b282012-03-01 15:35:21 +0800115
116out:
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000117 return neigh_node;
118}
119
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200120static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000121{
Sasha Levinb67bfe02013-02-27 17:06:00 -0800122 struct hlist_node *node_tmp;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200123 struct batadv_neigh_node *neigh_node, *tmp_neigh_node;
124 struct batadv_orig_node *orig_node;
Marek Lindner16b1aba2011-01-19 20:01:42 +0000125
Sven Eckelmann56303d32012-06-05 22:31:31 +0200126 orig_node = container_of(rcu, struct batadv_orig_node, rcu);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000127
Marek Lindnerf987ed62010-12-12 21:57:12 +0000128 spin_lock_bh(&orig_node->neigh_list_lock);
129
Simon Wunderlicha4c135c2011-01-19 20:01:43 +0000130 /* for all bonding members ... */
131 list_for_each_entry_safe(neigh_node, tmp_neigh_node,
132 &orig_node->bond_list, bonding_list) {
133 list_del_rcu(&neigh_node->bonding_list);
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200134 batadv_neigh_node_free_ref(neigh_node);
Simon Wunderlicha4c135c2011-01-19 20:01:43 +0000135 }
136
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000137 /* for all neighbors towards this originator ... */
Sasha Levinb67bfe02013-02-27 17:06:00 -0800138 hlist_for_each_entry_safe(neigh_node, node_tmp,
Marek Lindner9591a792010-12-12 21:57:11 +0000139 &orig_node->neigh_list, list) {
Marek Lindnerf987ed62010-12-12 21:57:12 +0000140 hlist_del_rcu(&neigh_node->list);
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200141 batadv_neigh_node_free_ref(neigh_node);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000142 }
143
Marek Lindnerf987ed62010-12-12 21:57:12 +0000144 spin_unlock_bh(&orig_node->neigh_list_lock);
145
Martin Hundebølld56b1702013-01-25 11:12:39 +0100146 /* Free nc_nodes */
147 batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL);
148
Sven Eckelmann88ed1e772012-05-12 02:09:40 +0200149 batadv_frag_list_free(&orig_node->frag_list);
Sven Eckelmann08c36d32012-05-12 02:09:39 +0200150 batadv_tt_global_del_orig(orig_node->bat_priv, orig_node,
151 "originator timed out");
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000152
Antonio Quartullia73105b2011-04-27 14:27:44 +0200153 kfree(orig_node->tt_buff);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000154 kfree(orig_node->bcast_own);
155 kfree(orig_node->bcast_own_sum);
156 kfree(orig_node);
157}
158
Sven Eckelmann56303d32012-06-05 22:31:31 +0200159void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node)
Marek Lindner7b36e8e2011-02-18 12:28:10 +0000160{
161 if (atomic_dec_and_test(&orig_node->refcount))
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200162 call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu);
Marek Lindner7b36e8e2011-02-18 12:28:10 +0000163}
164
Sven Eckelmann56303d32012-06-05 22:31:31 +0200165void batadv_originator_free(struct batadv_priv *bat_priv)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000166{
Sven Eckelmann5bf74e92012-06-05 22:31:28 +0200167 struct batadv_hashtable *hash = bat_priv->orig_hash;
Sasha Levinb67bfe02013-02-27 17:06:00 -0800168 struct hlist_node *node_tmp;
Marek Lindner16b1aba2011-01-19 20:01:42 +0000169 struct hlist_head *head;
Marek Lindner16b1aba2011-01-19 20:01:42 +0000170 spinlock_t *list_lock; /* spinlock to protect write access */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200171 struct batadv_orig_node *orig_node;
Antonio Quartullic90681b2011-10-05 17:05:25 +0200172 uint32_t i;
Marek Lindner16b1aba2011-01-19 20:01:42 +0000173
174 if (!hash)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000175 return;
176
177 cancel_delayed_work_sync(&bat_priv->orig_work);
178
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000179 bat_priv->orig_hash = NULL;
Marek Lindner16b1aba2011-01-19 20:01:42 +0000180
181 for (i = 0; i < hash->size; i++) {
182 head = &hash->table[i];
183 list_lock = &hash->list_locks[i];
184
185 spin_lock_bh(list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800186 hlist_for_each_entry_safe(orig_node, node_tmp,
Marek Lindner7aadf882011-02-18 12:28:09 +0000187 head, hash_entry) {
Sasha Levinb67bfe02013-02-27 17:06:00 -0800188 hlist_del_rcu(&orig_node->hash_entry);
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200189 batadv_orig_node_free_ref(orig_node);
Marek Lindner16b1aba2011-01-19 20:01:42 +0000190 }
191 spin_unlock_bh(list_lock);
192 }
193
Sven Eckelmann1a8eaf02012-05-12 02:09:32 +0200194 batadv_hash_destroy(hash);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000195}
196
197/* this function finds or creates an originator entry for the given
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200198 * address if it does not exits
199 */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200200struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
201 const uint8_t *addr)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000202{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200203 struct batadv_orig_node *orig_node;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000204 int size;
205 int hash_added;
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200206 unsigned long reset_time;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000207
Sven Eckelmannda641192012-05-12 13:48:56 +0200208 orig_node = batadv_orig_hash_find(bat_priv, addr);
Marek Lindner7aadf882011-02-18 12:28:09 +0000209 if (orig_node)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000210 return orig_node;
211
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200212 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
213 "Creating new originator: %pM\n", addr);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000214
Sven Eckelmann704509b2011-05-14 23:14:54 +0200215 orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000216 if (!orig_node)
217 return NULL;
218
Marek Lindner9591a792010-12-12 21:57:11 +0000219 INIT_HLIST_HEAD(&orig_node->neigh_list);
Simon Wunderlicha4c135c2011-01-19 20:01:43 +0000220 INIT_LIST_HEAD(&orig_node->bond_list);
Marek Lindner2ae2daf2011-01-19 20:01:42 +0000221 spin_lock_init(&orig_node->ogm_cnt_lock);
Marek Lindnerf3e00082011-01-25 21:52:11 +0000222 spin_lock_init(&orig_node->bcast_seqno_lock);
Marek Lindnerf987ed62010-12-12 21:57:12 +0000223 spin_lock_init(&orig_node->neigh_list_lock);
Antonio Quartullia73105b2011-04-27 14:27:44 +0200224 spin_lock_init(&orig_node->tt_buff_lock);
Marek Lindner7b36e8e2011-02-18 12:28:10 +0000225
Martin Hundebølld56b1702013-01-25 11:12:39 +0100226 batadv_nc_init_orig(orig_node);
227
Marek Lindner7b36e8e2011-02-18 12:28:10 +0000228 /* extra reference for return */
229 atomic_set(&orig_node->refcount, 2);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000230
Antonio Quartulli17071572011-11-07 16:36:40 +0100231 orig_node->tt_initialised = false;
Marek Lindner16b1aba2011-01-19 20:01:42 +0000232 orig_node->bat_priv = bat_priv;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000233 memcpy(orig_node->orig, addr, ETH_ALEN);
Antonio Quartulli785ea112011-11-23 11:35:44 +0100234 batadv_dat_init_orig_node_addr(orig_node);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000235 orig_node->router = NULL;
Antonio Quartullic8c991b2011-07-07 01:40:57 +0200236 orig_node->tt_crc = 0;
237 atomic_set(&orig_node->last_ttvn, 0);
Antonio Quartulli2dafb492011-05-05 08:42:45 +0200238 orig_node->tt_buff = NULL;
Antonio Quartullia73105b2011-04-27 14:27:44 +0200239 orig_node->tt_buff_len = 0;
240 atomic_set(&orig_node->tt_size, 0);
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200241 reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS);
242 orig_node->bcast_seqno_reset = reset_time;
243 orig_node->batman_seqno_reset = reset_time;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000244
Simon Wunderlicha4c135c2011-01-19 20:01:43 +0000245 atomic_set(&orig_node->bond_candidates, 0);
246
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200247 size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000248
249 orig_node->bcast_own = kzalloc(size, GFP_ATOMIC);
250 if (!orig_node->bcast_own)
251 goto free_orig_node;
252
253 size = bat_priv->num_ifaces * sizeof(uint8_t);
254 orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC);
255
256 INIT_LIST_HEAD(&orig_node->frag_list);
257 orig_node->last_frag_packet = 0;
258
259 if (!orig_node->bcast_own_sum)
260 goto free_bcast_own;
261
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200262 hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig,
Sven Eckelmannda641192012-05-12 13:48:56 +0200263 batadv_choose_orig, orig_node,
Sven Eckelmannc0a55922012-05-12 13:48:55 +0200264 &orig_node->hash_entry);
Antonio Quartulli1a1f37d2011-07-10 00:36:36 +0200265 if (hash_added != 0)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000266 goto free_bcast_own_sum;
267
268 return orig_node;
269free_bcast_own_sum:
270 kfree(orig_node->bcast_own_sum);
271free_bcast_own:
272 kfree(orig_node->bcast_own);
273free_orig_node:
274 kfree(orig_node);
275 return NULL;
276}
277
Sven Eckelmann56303d32012-06-05 22:31:31 +0200278static bool
279batadv_purge_orig_neighbors(struct batadv_priv *bat_priv,
280 struct batadv_orig_node *orig_node,
281 struct batadv_neigh_node **best_neigh_node)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000282{
Sasha Levinb67bfe02013-02-27 17:06:00 -0800283 struct hlist_node *node_tmp;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200284 struct batadv_neigh_node *neigh_node;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000285 bool neigh_purged = false;
Marek Lindner0b0094e2012-03-01 15:35:20 +0800286 unsigned long last_seen;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200287 struct batadv_hard_iface *if_incoming;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000288
289 *best_neigh_node = NULL;
290
Marek Lindnerf987ed62010-12-12 21:57:12 +0000291 spin_lock_bh(&orig_node->neigh_list_lock);
292
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000293 /* for all neighbors towards this originator ... */
Sasha Levinb67bfe02013-02-27 17:06:00 -0800294 hlist_for_each_entry_safe(neigh_node, node_tmp,
Marek Lindner9591a792010-12-12 21:57:11 +0000295 &orig_node->neigh_list, list) {
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200296 last_seen = neigh_node->last_seen;
297 if_incoming = neigh_node->if_incoming;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000298
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200299 if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) ||
Sven Eckelmanne9a4f292012-06-03 22:19:19 +0200300 (if_incoming->if_status == BATADV_IF_INACTIVE) ||
301 (if_incoming->if_status == BATADV_IF_NOT_IN_USE) ||
302 (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) {
Sven Eckelmanne9a4f292012-06-03 22:19:19 +0200303 if ((if_incoming->if_status == BATADV_IF_INACTIVE) ||
304 (if_incoming->if_status == BATADV_IF_NOT_IN_USE) ||
305 (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED))
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200306 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200307 "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n",
308 orig_node->orig, neigh_node->addr,
309 if_incoming->net_dev->name);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000310 else
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200311 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200312 "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n",
313 orig_node->orig, neigh_node->addr,
314 jiffies_to_msecs(last_seen));
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000315
316 neigh_purged = true;
Marek Lindner9591a792010-12-12 21:57:11 +0000317
Marek Lindnerf987ed62010-12-12 21:57:12 +0000318 hlist_del_rcu(&neigh_node->list);
Sven Eckelmann30d3c512012-05-12 02:09:36 +0200319 batadv_bonding_candidate_del(orig_node, neigh_node);
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200320 batadv_neigh_node_free_ref(neigh_node);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000321 } else {
322 if ((!*best_neigh_node) ||
323 (neigh_node->tq_avg > (*best_neigh_node)->tq_avg))
324 *best_neigh_node = neigh_node;
325 }
326 }
Marek Lindnerf987ed62010-12-12 21:57:12 +0000327
328 spin_unlock_bh(&orig_node->neigh_list_lock);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000329 return neigh_purged;
330}
331
Sven Eckelmann56303d32012-06-05 22:31:31 +0200332static bool batadv_purge_orig_node(struct batadv_priv *bat_priv,
333 struct batadv_orig_node *orig_node)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000334{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200335 struct batadv_neigh_node *best_neigh_node;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000336
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200337 if (batadv_has_timed_out(orig_node->last_seen,
338 2 * BATADV_PURGE_TIMEOUT)) {
Sven Eckelmann39c75a52012-06-03 22:19:22 +0200339 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200340 "Originator timeout: originator %pM, last_seen %u\n",
341 orig_node->orig,
342 jiffies_to_msecs(orig_node->last_seen));
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000343 return true;
344 } else {
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200345 if (batadv_purge_orig_neighbors(bat_priv, orig_node,
346 &best_neigh_node))
Sven Eckelmann30d3c512012-05-12 02:09:36 +0200347 batadv_update_route(bat_priv, orig_node,
348 best_neigh_node);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000349 }
350
351 return false;
352}
353
Sven Eckelmann56303d32012-06-05 22:31:31 +0200354static void _batadv_purge_orig(struct batadv_priv *bat_priv)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000355{
Sven Eckelmann5bf74e92012-06-05 22:31:28 +0200356 struct batadv_hashtable *hash = bat_priv->orig_hash;
Sasha Levinb67bfe02013-02-27 17:06:00 -0800357 struct hlist_node *node_tmp;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000358 struct hlist_head *head;
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000359 spinlock_t *list_lock; /* spinlock to protect write access */
Sven Eckelmann56303d32012-06-05 22:31:31 +0200360 struct batadv_orig_node *orig_node;
Antonio Quartullic90681b2011-10-05 17:05:25 +0200361 uint32_t i;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000362
363 if (!hash)
364 return;
365
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000366 /* for all origins... */
367 for (i = 0; i < hash->size; i++) {
368 head = &hash->table[i];
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000369 list_lock = &hash->list_locks[i];
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000370
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000371 spin_lock_bh(list_lock);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800372 hlist_for_each_entry_safe(orig_node, node_tmp,
Marek Lindner7aadf882011-02-18 12:28:09 +0000373 head, hash_entry) {
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200374 if (batadv_purge_orig_node(bat_priv, orig_node)) {
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000375 if (orig_node->gw_flags)
Sven Eckelmann7cf06bc2012-05-12 02:09:29 +0200376 batadv_gw_node_delete(bat_priv,
377 orig_node);
Sasha Levinb67bfe02013-02-27 17:06:00 -0800378 hlist_del_rcu(&orig_node->hash_entry);
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200379 batadv_orig_node_free_ref(orig_node);
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000380 continue;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000381 }
382
Sven Eckelmann1eda58b2012-05-12 13:48:58 +0200383 if (batadv_has_timed_out(orig_node->last_frag_packet,
Sven Eckelmann4d5d2db82012-06-03 22:19:15 +0200384 BATADV_FRAG_TIMEOUT))
Sven Eckelmann88ed1e772012-05-12 02:09:40 +0200385 batadv_frag_list_free(&orig_node->frag_list);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000386 }
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000387 spin_unlock_bh(list_lock);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000388 }
389
Sven Eckelmann7cf06bc2012-05-12 02:09:29 +0200390 batadv_gw_node_purge(bat_priv);
391 batadv_gw_election(bat_priv);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000392}
393
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200394static void batadv_purge_orig(struct work_struct *work)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000395{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200396 struct delayed_work *delayed_work;
397 struct batadv_priv *bat_priv;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000398
Sven Eckelmann56303d32012-06-05 22:31:31 +0200399 delayed_work = container_of(work, struct delayed_work, work);
400 bat_priv = container_of(delayed_work, struct batadv_priv, orig_work);
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200401 _batadv_purge_orig(bat_priv);
Antonio Quartulli72414442012-12-25 13:14:37 +0100402 queue_delayed_work(batadv_event_workqueue,
403 &bat_priv->orig_work,
404 msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD));
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000405}
406
Sven Eckelmann56303d32012-06-05 22:31:31 +0200407void batadv_purge_orig_ref(struct batadv_priv *bat_priv)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000408{
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200409 _batadv_purge_orig(bat_priv);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000410}
411
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200412int batadv_orig_seq_print_text(struct seq_file *seq, void *offset)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000413{
414 struct net_device *net_dev = (struct net_device *)seq->private;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200415 struct batadv_priv *bat_priv = netdev_priv(net_dev);
Sven Eckelmann5bf74e92012-06-05 22:31:28 +0200416 struct batadv_hashtable *hash = bat_priv->orig_hash;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000417 struct hlist_head *head;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200418 struct batadv_hard_iface *primary_if;
419 struct batadv_orig_node *orig_node;
420 struct batadv_neigh_node *neigh_node, *neigh_node_tmp;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000421 int batman_count = 0;
422 int last_seen_secs;
423 int last_seen_msecs;
Sven Eckelmann0aca2362012-06-19 20:26:30 +0200424 unsigned long last_seen_jiffies;
Antonio Quartullic90681b2011-10-05 17:05:25 +0200425 uint32_t i;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000426
Marek Lindner30da63a2012-08-03 17:15:46 +0200427 primary_if = batadv_seq_print_text_primary_if_get(seq);
428 if (!primary_if)
Marek Lindner32ae9b22011-04-20 15:40:58 +0200429 goto out;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000430
Sven Eckelmann44c43492011-07-05 10:42:51 +0200431 seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n",
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200432 BATADV_SOURCE_VERSION, primary_if->net_dev->name,
Marek Lindner32ae9b22011-04-20 15:40:58 +0200433 primary_if->net_dev->dev_addr, net_dev->name);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000434 seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200435 "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE,
436 "Nexthop", "outgoingIF", "Potential nexthops");
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000437
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000438 for (i = 0; i < hash->size; i++) {
439 head = &hash->table[i];
440
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000441 rcu_read_lock();
Sasha Levinb67bfe02013-02-27 17:06:00 -0800442 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200443 neigh_node = batadv_orig_node_get_router(orig_node);
Linus Lüssinge1a5382f2011-03-14 22:43:37 +0000444 if (!neigh_node)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000445 continue;
446
Linus Lüssinge1a5382f2011-03-14 22:43:37 +0000447 if (neigh_node->tq_avg == 0)
448 goto next;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000449
Sven Eckelmann0aca2362012-06-19 20:26:30 +0200450 last_seen_jiffies = jiffies - orig_node->last_seen;
451 last_seen_msecs = jiffies_to_msecs(last_seen_jiffies);
452 last_seen_secs = last_seen_msecs / 1000;
453 last_seen_msecs = last_seen_msecs % 1000;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000454
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000455 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
Sasha Levinb67bfe02013-02-27 17:06:00 -0800461 hlist_for_each_entry_rcu(neigh_node_tmp,
Marek Lindnerf987ed62010-12-12 21:57:12 +0000462 &orig_node->neigh_list, list) {
Linus Lüssinge1a5382f2011-03-14 22:43:37 +0000463 seq_printf(seq, " %pM (%3i)",
464 neigh_node_tmp->addr,
465 neigh_node_tmp->tq_avg);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000466 }
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000467
468 seq_printf(seq, "\n");
469 batman_count++;
Linus Lüssinge1a5382f2011-03-14 22:43:37 +0000470
471next:
Sven Eckelmann7d211ef2012-05-12 02:09:34 +0200472 batadv_neigh_node_free_ref(neigh_node);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000473 }
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000474 rcu_read_unlock();
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000475 }
476
Linus Lüssinge1a5382f2011-03-14 22:43:37 +0000477 if (batman_count == 0)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000478 seq_printf(seq, "No batman nodes in range ...\n");
479
Marek Lindner32ae9b22011-04-20 15:40:58 +0200480out:
481 if (primary_if)
Sven Eckelmanne5d89252012-05-12 13:48:54 +0200482 batadv_hardif_free_ref(primary_if);
Marek Lindner30da63a2012-08-03 17:15:46 +0200483 return 0;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000484}
485
Sven Eckelmann56303d32012-06-05 22:31:31 +0200486static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node,
487 int max_if_num)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000488{
489 void *data_ptr;
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200490 size_t data_size, old_size;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000491
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200492 data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS;
493 old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS;
494 data_ptr = kmalloc(data_size, GFP_ATOMIC);
Joe Perches320f4222011-08-29 14:17:24 -0700495 if (!data_ptr)
Sven Eckelmann5346c352012-05-05 13:27:28 +0200496 return -ENOMEM;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000497
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200498 memcpy(data_ptr, orig_node->bcast_own, old_size);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000499 kfree(orig_node->bcast_own);
500 orig_node->bcast_own = data_ptr;
501
502 data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
Joe Perches320f4222011-08-29 14:17:24 -0700503 if (!data_ptr)
Sven Eckelmann5346c352012-05-05 13:27:28 +0200504 return -ENOMEM;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000505
506 memcpy(data_ptr, orig_node->bcast_own_sum,
507 (max_if_num - 1) * sizeof(uint8_t));
508 kfree(orig_node->bcast_own_sum);
509 orig_node->bcast_own_sum = data_ptr;
510
511 return 0;
512}
513
Sven Eckelmann56303d32012-06-05 22:31:31 +0200514int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
515 int max_if_num)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000516{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200517 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
Sven Eckelmann5bf74e92012-06-05 22:31:28 +0200518 struct batadv_hashtable *hash = bat_priv->orig_hash;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000519 struct hlist_head *head;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200520 struct batadv_orig_node *orig_node;
Antonio Quartullic90681b2011-10-05 17:05:25 +0200521 uint32_t i;
522 int ret;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000523
524 /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200525 * if_num
526 */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000527 for (i = 0; i < hash->size; i++) {
528 head = &hash->table[i];
529
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000530 rcu_read_lock();
Sasha Levinb67bfe02013-02-27 17:06:00 -0800531 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
Marek Lindner2ae2daf2011-01-19 20:01:42 +0000532 spin_lock_bh(&orig_node->ogm_cnt_lock);
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200533 ret = batadv_orig_node_add_if(orig_node, max_if_num);
Marek Lindner2ae2daf2011-01-19 20:01:42 +0000534 spin_unlock_bh(&orig_node->ogm_cnt_lock);
535
Sven Eckelmann5346c352012-05-05 13:27:28 +0200536 if (ret == -ENOMEM)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000537 goto err;
538 }
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000539 rcu_read_unlock();
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000540 }
541
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000542 return 0;
543
544err:
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000545 rcu_read_unlock();
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000546 return -ENOMEM;
547}
548
Sven Eckelmann56303d32012-06-05 22:31:31 +0200549static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node,
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200550 int max_if_num, int del_if_num)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000551{
552 void *data_ptr = NULL;
553 int chunk_size;
554
555 /* last interface was removed */
556 if (max_if_num == 0)
557 goto free_bcast_own;
558
Sven Eckelmann42d0b042012-06-03 22:19:17 +0200559 chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000560 data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
Joe Perches320f4222011-08-29 14:17:24 -0700561 if (!data_ptr)
Sven Eckelmann5346c352012-05-05 13:27:28 +0200562 return -ENOMEM;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000563
564 /* copy first part */
565 memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
566
567 /* copy second part */
Sven Eckelmann38e3c5f2011-05-14 23:14:49 +0200568 memcpy((char *)data_ptr + del_if_num * chunk_size,
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000569 orig_node->bcast_own + ((del_if_num + 1) * chunk_size),
570 (max_if_num - del_if_num) * chunk_size);
571
572free_bcast_own:
573 kfree(orig_node->bcast_own);
574 orig_node->bcast_own = data_ptr;
575
576 if (max_if_num == 0)
577 goto free_own_sum;
578
579 data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
Joe Perches320f4222011-08-29 14:17:24 -0700580 if (!data_ptr)
Sven Eckelmann5346c352012-05-05 13:27:28 +0200581 return -ENOMEM;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000582
583 memcpy(data_ptr, orig_node->bcast_own_sum,
584 del_if_num * sizeof(uint8_t));
585
Sven Eckelmann38e3c5f2011-05-14 23:14:49 +0200586 memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t),
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000587 orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)),
588 (max_if_num - del_if_num) * sizeof(uint8_t));
589
590free_own_sum:
591 kfree(orig_node->bcast_own_sum);
592 orig_node->bcast_own_sum = data_ptr;
593
594 return 0;
595}
596
Sven Eckelmann56303d32012-06-05 22:31:31 +0200597int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
598 int max_if_num)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000599{
Sven Eckelmann56303d32012-06-05 22:31:31 +0200600 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
Sven Eckelmann5bf74e92012-06-05 22:31:28 +0200601 struct batadv_hashtable *hash = bat_priv->orig_hash;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000602 struct hlist_head *head;
Sven Eckelmann56303d32012-06-05 22:31:31 +0200603 struct batadv_hard_iface *hard_iface_tmp;
604 struct batadv_orig_node *orig_node;
Antonio Quartullic90681b2011-10-05 17:05:25 +0200605 uint32_t i;
606 int ret;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000607
608 /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
Sven Eckelmann9cfc7bd2012-05-12 02:09:43 +0200609 * if_num
610 */
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000611 for (i = 0; i < hash->size; i++) {
612 head = &hash->table[i];
613
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000614 rcu_read_lock();
Sasha Levinb67bfe02013-02-27 17:06:00 -0800615 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
Marek Lindner2ae2daf2011-01-19 20:01:42 +0000616 spin_lock_bh(&orig_node->ogm_cnt_lock);
Sven Eckelmann03fc7f82012-05-12 18:34:00 +0200617 ret = batadv_orig_node_del_if(orig_node, max_if_num,
618 hard_iface->if_num);
Marek Lindner2ae2daf2011-01-19 20:01:42 +0000619 spin_unlock_bh(&orig_node->ogm_cnt_lock);
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000620
Sven Eckelmann5346c352012-05-05 13:27:28 +0200621 if (ret == -ENOMEM)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000622 goto err;
623 }
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000624 rcu_read_unlock();
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000625 }
626
627 /* renumber remaining batman interfaces _inside_ of orig_hash_lock */
628 rcu_read_lock();
Sven Eckelmann3193e8f2012-05-12 02:09:42 +0200629 list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) {
Sven Eckelmanne9a4f292012-06-03 22:19:19 +0200630 if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000631 continue;
632
Marek Lindnere6c10f42011-02-18 12:33:20 +0000633 if (hard_iface == hard_iface_tmp)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000634 continue;
635
Marek Lindnere6c10f42011-02-18 12:33:20 +0000636 if (hard_iface->soft_iface != hard_iface_tmp->soft_iface)
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000637 continue;
638
Marek Lindnere6c10f42011-02-18 12:33:20 +0000639 if (hard_iface_tmp->if_num > hard_iface->if_num)
640 hard_iface_tmp->if_num--;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000641 }
642 rcu_read_unlock();
643
Marek Lindnere6c10f42011-02-18 12:33:20 +0000644 hard_iface->if_num = -1;
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000645 return 0;
646
647err:
Marek Lindnerfb778ea2011-01-19 20:01:40 +0000648 rcu_read_unlock();
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000649 return -ENOMEM;
650}