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0b873931 | 1 | /* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
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 | |
c6c8fea2 SE |
18 | */ |
19 | ||
c6c8fea2 | 20 | #include "main.h" |
785ea114 | 21 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
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" | |
28 | #include "unicast.h" | |
29 | #include "soft-interface.h" | |
23721387 | 30 | #include "bridge_loop_avoidance.h" |
c6c8fea2 | 31 | |
dec05074 AQ |
32 | /* hash class keys */ |
33 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
34 | ||
03fc7f86 | 35 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 36 | |
b8e2dd13 | 37 | /* returns 1 if they are the same originator */ |
03fc7f86 | 38 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 39 | { |
56303d34 SE |
40 | const void *data1 = container_of(node, struct batadv_orig_node, |
41 | hash_entry); | |
b8e2dd13 SE |
42 | |
43 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
44 | } | |
45 | ||
56303d34 | 46 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
47 | { |
48 | if (bat_priv->orig_hash) | |
5346c35e | 49 | return 0; |
c6c8fea2 | 50 | |
1a8eaf07 | 51 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
52 | |
53 | if (!bat_priv->orig_hash) | |
54 | goto err; | |
55 | ||
dec05074 AQ |
56 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
57 | &batadv_orig_hash_lock_class_key); | |
58 | ||
72414442 AQ |
59 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
60 | queue_delayed_work(batadv_event_workqueue, | |
61 | &bat_priv->orig_work, | |
62 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
63 | ||
5346c35e | 64 | return 0; |
c6c8fea2 SE |
65 | |
66 | err: | |
5346c35e | 67 | return -ENOMEM; |
c6c8fea2 SE |
68 | } |
69 | ||
56303d34 | 70 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 71 | { |
44524fcd | 72 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 73 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
74 | } |
75 | ||
e1a5382f | 76 | /* increases the refcounter of a found router */ |
56303d34 SE |
77 | struct batadv_neigh_node * |
78 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 79 | { |
56303d34 | 80 | struct batadv_neigh_node *router; |
e1a5382f LL |
81 | |
82 | rcu_read_lock(); | |
83 | router = rcu_dereference(orig_node->router); | |
84 | ||
85 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
86 | router = NULL; | |
87 | ||
88 | rcu_read_unlock(); | |
89 | return router; | |
90 | } | |
91 | ||
56303d34 SE |
92 | struct batadv_neigh_node * |
93 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
94 | const uint8_t *neigh_addr, uint32_t seqno) | |
c6c8fea2 | 95 | { |
56303d34 SE |
96 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
97 | struct batadv_neigh_node *neigh_node; | |
c6c8fea2 | 98 | |
704509b8 | 99 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 100 | if (!neigh_node) |
7ae8b285 | 101 | goto out; |
c6c8fea2 | 102 | |
9591a79f | 103 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 104 | |
7ae8b285 | 105 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 106 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
107 | |
108 | /* extra reference for return */ | |
109 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 110 | |
39c75a51 | 111 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
112 | "Creating new neighbor %pM, initial seqno %d\n", |
113 | neigh_addr, seqno); | |
7ae8b285 ML |
114 | |
115 | out: | |
c6c8fea2 SE |
116 | return neigh_node; |
117 | } | |
118 | ||
03fc7f86 | 119 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 120 | { |
b67bfe0d | 121 | struct hlist_node *node_tmp; |
56303d34 SE |
122 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
123 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 124 | |
56303d34 | 125 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 126 | |
f987ed6e ML |
127 | spin_lock_bh(&orig_node->neigh_list_lock); |
128 | ||
a4c135c5 SW |
129 | /* for all bonding members ... */ |
130 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
131 | &orig_node->bond_list, bonding_list) { | |
132 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 133 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
134 | } |
135 | ||
c6c8fea2 | 136 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 137 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 138 | &orig_node->neigh_list, list) { |
f987ed6e | 139 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 140 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
141 | } |
142 | ||
f987ed6e ML |
143 | spin_unlock_bh(&orig_node->neigh_list_lock); |
144 | ||
88ed1e77 | 145 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
146 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
147 | "originator timed out"); | |
c6c8fea2 | 148 | |
a73105b8 | 149 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
150 | kfree(orig_node->bcast_own); |
151 | kfree(orig_node->bcast_own_sum); | |
152 | kfree(orig_node); | |
153 | } | |
154 | ||
56303d34 | 155 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
156 | { |
157 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 158 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
159 | } |
160 | ||
56303d34 | 161 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 162 | { |
5bf74e9c | 163 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 164 | struct hlist_node *node_tmp; |
16b1aba8 | 165 | struct hlist_head *head; |
16b1aba8 | 166 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 167 | struct batadv_orig_node *orig_node; |
c90681b8 | 168 | uint32_t i; |
16b1aba8 ML |
169 | |
170 | if (!hash) | |
c6c8fea2 SE |
171 | return; |
172 | ||
173 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
174 | ||
c6c8fea2 | 175 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
176 | |
177 | for (i = 0; i < hash->size; i++) { | |
178 | head = &hash->table[i]; | |
179 | list_lock = &hash->list_locks[i]; | |
180 | ||
181 | spin_lock_bh(list_lock); | |
b67bfe0d | 182 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 183 | head, hash_entry) { |
b67bfe0d | 184 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 185 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
186 | } |
187 | spin_unlock_bh(list_lock); | |
188 | } | |
189 | ||
1a8eaf07 | 190 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
191 | } |
192 | ||
193 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
194 | * address if it does not exits |
195 | */ | |
56303d34 SE |
196 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
197 | const uint8_t *addr) | |
c6c8fea2 | 198 | { |
56303d34 | 199 | struct batadv_orig_node *orig_node; |
c6c8fea2 SE |
200 | int size; |
201 | int hash_added; | |
42d0b044 | 202 | unsigned long reset_time; |
c6c8fea2 | 203 | |
da641193 | 204 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 205 | if (orig_node) |
c6c8fea2 SE |
206 | return orig_node; |
207 | ||
39c75a51 SE |
208 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
209 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 210 | |
704509b8 | 211 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
212 | if (!orig_node) |
213 | return NULL; | |
214 | ||
9591a79f | 215 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 216 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 217 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 218 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 219 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 220 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
221 | |
222 | /* extra reference for return */ | |
223 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 224 | |
17071578 | 225 | orig_node->tt_initialised = false; |
16b1aba8 | 226 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 227 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 228 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 229 | orig_node->router = NULL; |
c8c991bf AQ |
230 | orig_node->tt_crc = 0; |
231 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 232 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
233 | orig_node->tt_buff_len = 0; |
234 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
235 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
236 | orig_node->bcast_seqno_reset = reset_time; | |
237 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 238 | |
a4c135c5 SW |
239 | atomic_set(&orig_node->bond_candidates, 0); |
240 | ||
42d0b044 | 241 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
242 | |
243 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
244 | if (!orig_node->bcast_own) | |
245 | goto free_orig_node; | |
246 | ||
247 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
248 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
249 | ||
250 | INIT_LIST_HEAD(&orig_node->frag_list); | |
251 | orig_node->last_frag_packet = 0; | |
252 | ||
253 | if (!orig_node->bcast_own_sum) | |
254 | goto free_bcast_own; | |
255 | ||
03fc7f86 | 256 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 257 | batadv_choose_orig, orig_node, |
c0a55929 | 258 | &orig_node->hash_entry); |
1a1f37d9 | 259 | if (hash_added != 0) |
c6c8fea2 SE |
260 | goto free_bcast_own_sum; |
261 | ||
262 | return orig_node; | |
263 | free_bcast_own_sum: | |
264 | kfree(orig_node->bcast_own_sum); | |
265 | free_bcast_own: | |
266 | kfree(orig_node->bcast_own); | |
267 | free_orig_node: | |
268 | kfree(orig_node); | |
269 | return NULL; | |
270 | } | |
271 | ||
56303d34 SE |
272 | static bool |
273 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
274 | struct batadv_orig_node *orig_node, | |
275 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 276 | { |
b67bfe0d | 277 | struct hlist_node *node_tmp; |
56303d34 | 278 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 279 | bool neigh_purged = false; |
0b0094e0 | 280 | unsigned long last_seen; |
56303d34 | 281 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
282 | |
283 | *best_neigh_node = NULL; | |
284 | ||
f987ed6e ML |
285 | spin_lock_bh(&orig_node->neigh_list_lock); |
286 | ||
c6c8fea2 | 287 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 288 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 289 | &orig_node->neigh_list, list) { |
1eda58bf SE |
290 | last_seen = neigh_node->last_seen; |
291 | if_incoming = neigh_node->if_incoming; | |
292 | ||
42d0b044 | 293 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
294 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
295 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
296 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
297 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
298 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
299 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 300 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
301 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
302 | orig_node->orig, neigh_node->addr, | |
303 | if_incoming->net_dev->name); | |
c6c8fea2 | 304 | else |
39c75a51 | 305 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
306 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
307 | orig_node->orig, neigh_node->addr, | |
308 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
309 | |
310 | neigh_purged = true; | |
9591a79f | 311 | |
f987ed6e | 312 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 313 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 314 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
315 | } else { |
316 | if ((!*best_neigh_node) || | |
317 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
318 | *best_neigh_node = neigh_node; | |
319 | } | |
320 | } | |
f987ed6e ML |
321 | |
322 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
323 | return neigh_purged; |
324 | } | |
325 | ||
56303d34 SE |
326 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
327 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 328 | { |
56303d34 | 329 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 330 | |
42d0b044 SE |
331 | if (batadv_has_timed_out(orig_node->last_seen, |
332 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 333 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
334 | "Originator timeout: originator %pM, last_seen %u\n", |
335 | orig_node->orig, | |
336 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
337 | return true; |
338 | } else { | |
03fc7f86 SE |
339 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
340 | &best_neigh_node)) | |
30d3c511 SE |
341 | batadv_update_route(bat_priv, orig_node, |
342 | best_neigh_node); | |
c6c8fea2 SE |
343 | } |
344 | ||
345 | return false; | |
346 | } | |
347 | ||
56303d34 | 348 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 349 | { |
5bf74e9c | 350 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 351 | struct hlist_node *node_tmp; |
c6c8fea2 | 352 | struct hlist_head *head; |
fb778ea1 | 353 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 354 | struct batadv_orig_node *orig_node; |
c90681b8 | 355 | uint32_t i; |
c6c8fea2 SE |
356 | |
357 | if (!hash) | |
358 | return; | |
359 | ||
c6c8fea2 SE |
360 | /* for all origins... */ |
361 | for (i = 0; i < hash->size; i++) { | |
362 | head = &hash->table[i]; | |
fb778ea1 | 363 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 364 | |
fb778ea1 | 365 | spin_lock_bh(list_lock); |
b67bfe0d | 366 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 367 | head, hash_entry) { |
03fc7f86 | 368 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
c6c8fea2 | 369 | if (orig_node->gw_flags) |
7cf06bc6 SE |
370 | batadv_gw_node_delete(bat_priv, |
371 | orig_node); | |
b67bfe0d | 372 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 373 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 374 | continue; |
c6c8fea2 SE |
375 | } |
376 | ||
1eda58bf | 377 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
4d5d2db8 | 378 | BATADV_FRAG_TIMEOUT)) |
88ed1e77 | 379 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 380 | } |
fb778ea1 | 381 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
382 | } |
383 | ||
7cf06bc6 SE |
384 | batadv_gw_node_purge(bat_priv); |
385 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
386 | } |
387 | ||
03fc7f86 | 388 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 389 | { |
56303d34 SE |
390 | struct delayed_work *delayed_work; |
391 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 392 | |
56303d34 SE |
393 | delayed_work = container_of(work, struct delayed_work, work); |
394 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 395 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
396 | queue_delayed_work(batadv_event_workqueue, |
397 | &bat_priv->orig_work, | |
398 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
399 | } |
400 | ||
56303d34 | 401 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 402 | { |
03fc7f86 | 403 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
404 | } |
405 | ||
7d211efc | 406 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
407 | { |
408 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 409 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 410 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 411 | struct hlist_head *head; |
56303d34 SE |
412 | struct batadv_hard_iface *primary_if; |
413 | struct batadv_orig_node *orig_node; | |
414 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
415 | int batman_count = 0; |
416 | int last_seen_secs; | |
417 | int last_seen_msecs; | |
0aca2369 | 418 | unsigned long last_seen_jiffies; |
c90681b8 | 419 | uint32_t i; |
32ae9b22 | 420 | |
30da63a6 ML |
421 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
422 | if (!primary_if) | |
32ae9b22 | 423 | goto out; |
c6c8fea2 | 424 | |
44c4349a | 425 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 426 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 427 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 428 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
429 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
430 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 431 | |
c6c8fea2 SE |
432 | for (i = 0; i < hash->size; i++) { |
433 | head = &hash->table[i]; | |
434 | ||
fb778ea1 | 435 | rcu_read_lock(); |
b67bfe0d | 436 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
7d211efc | 437 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 438 | if (!neigh_node) |
c6c8fea2 SE |
439 | continue; |
440 | ||
e1a5382f LL |
441 | if (neigh_node->tq_avg == 0) |
442 | goto next; | |
c6c8fea2 | 443 | |
0aca2369 SE |
444 | last_seen_jiffies = jiffies - orig_node->last_seen; |
445 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
446 | last_seen_secs = last_seen_msecs / 1000; | |
447 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 448 | |
c6c8fea2 SE |
449 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
450 | orig_node->orig, last_seen_secs, | |
451 | last_seen_msecs, neigh_node->tq_avg, | |
452 | neigh_node->addr, | |
453 | neigh_node->if_incoming->net_dev->name); | |
454 | ||
b67bfe0d | 455 | hlist_for_each_entry_rcu(neigh_node_tmp, |
f987ed6e | 456 | &orig_node->neigh_list, list) { |
e1a5382f LL |
457 | seq_printf(seq, " %pM (%3i)", |
458 | neigh_node_tmp->addr, | |
459 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
460 | } |
461 | ||
462 | seq_printf(seq, "\n"); | |
463 | batman_count++; | |
e1a5382f LL |
464 | |
465 | next: | |
7d211efc | 466 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 467 | } |
fb778ea1 | 468 | rcu_read_unlock(); |
c6c8fea2 SE |
469 | } |
470 | ||
e1a5382f | 471 | if (batman_count == 0) |
c6c8fea2 SE |
472 | seq_printf(seq, "No batman nodes in range ...\n"); |
473 | ||
32ae9b22 ML |
474 | out: |
475 | if (primary_if) | |
e5d89254 | 476 | batadv_hardif_free_ref(primary_if); |
30da63a6 | 477 | return 0; |
c6c8fea2 SE |
478 | } |
479 | ||
56303d34 SE |
480 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
481 | int max_if_num) | |
c6c8fea2 SE |
482 | { |
483 | void *data_ptr; | |
42d0b044 | 484 | size_t data_size, old_size; |
c6c8fea2 | 485 | |
42d0b044 SE |
486 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
487 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
488 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 489 | if (!data_ptr) |
5346c35e | 490 | return -ENOMEM; |
c6c8fea2 | 491 | |
42d0b044 | 492 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
493 | kfree(orig_node->bcast_own); |
494 | orig_node->bcast_own = data_ptr; | |
495 | ||
496 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 497 | if (!data_ptr) |
5346c35e | 498 | return -ENOMEM; |
c6c8fea2 SE |
499 | |
500 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
501 | (max_if_num - 1) * sizeof(uint8_t)); | |
502 | kfree(orig_node->bcast_own_sum); | |
503 | orig_node->bcast_own_sum = data_ptr; | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
56303d34 SE |
508 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
509 | int max_if_num) | |
c6c8fea2 | 510 | { |
56303d34 | 511 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 512 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 513 | struct hlist_head *head; |
56303d34 | 514 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
515 | uint32_t i; |
516 | int ret; | |
c6c8fea2 SE |
517 | |
518 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
519 | * if_num |
520 | */ | |
c6c8fea2 SE |
521 | for (i = 0; i < hash->size; i++) { |
522 | head = &hash->table[i]; | |
523 | ||
fb778ea1 | 524 | rcu_read_lock(); |
b67bfe0d | 525 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 526 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 527 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
528 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
529 | ||
5346c35e | 530 | if (ret == -ENOMEM) |
c6c8fea2 SE |
531 | goto err; |
532 | } | |
fb778ea1 | 533 | rcu_read_unlock(); |
c6c8fea2 SE |
534 | } |
535 | ||
c6c8fea2 SE |
536 | return 0; |
537 | ||
538 | err: | |
fb778ea1 | 539 | rcu_read_unlock(); |
c6c8fea2 SE |
540 | return -ENOMEM; |
541 | } | |
542 | ||
56303d34 | 543 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 544 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
545 | { |
546 | void *data_ptr = NULL; | |
547 | int chunk_size; | |
548 | ||
549 | /* last interface was removed */ | |
550 | if (max_if_num == 0) | |
551 | goto free_bcast_own; | |
552 | ||
42d0b044 | 553 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 554 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 555 | if (!data_ptr) |
5346c35e | 556 | return -ENOMEM; |
c6c8fea2 SE |
557 | |
558 | /* copy first part */ | |
559 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
560 | ||
561 | /* copy second part */ | |
38e3c5f0 | 562 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
563 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
564 | (max_if_num - del_if_num) * chunk_size); | |
565 | ||
566 | free_bcast_own: | |
567 | kfree(orig_node->bcast_own); | |
568 | orig_node->bcast_own = data_ptr; | |
569 | ||
570 | if (max_if_num == 0) | |
571 | goto free_own_sum; | |
572 | ||
573 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 574 | if (!data_ptr) |
5346c35e | 575 | return -ENOMEM; |
c6c8fea2 SE |
576 | |
577 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
578 | del_if_num * sizeof(uint8_t)); | |
579 | ||
38e3c5f0 | 580 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
581 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
582 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
583 | ||
584 | free_own_sum: | |
585 | kfree(orig_node->bcast_own_sum); | |
586 | orig_node->bcast_own_sum = data_ptr; | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
56303d34 SE |
591 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
592 | int max_if_num) | |
c6c8fea2 | 593 | { |
56303d34 | 594 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 595 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 596 | struct hlist_head *head; |
56303d34 SE |
597 | struct batadv_hard_iface *hard_iface_tmp; |
598 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
599 | uint32_t i; |
600 | int ret; | |
c6c8fea2 SE |
601 | |
602 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
603 | * if_num |
604 | */ | |
c6c8fea2 SE |
605 | for (i = 0; i < hash->size; i++) { |
606 | head = &hash->table[i]; | |
607 | ||
fb778ea1 | 608 | rcu_read_lock(); |
b67bfe0d | 609 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 610 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
611 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
612 | hard_iface->if_num); | |
2ae2daf6 | 613 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 614 | |
5346c35e | 615 | if (ret == -ENOMEM) |
c6c8fea2 SE |
616 | goto err; |
617 | } | |
fb778ea1 | 618 | rcu_read_unlock(); |
c6c8fea2 SE |
619 | } |
620 | ||
621 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
622 | rcu_read_lock(); | |
3193e8fd | 623 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 624 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
625 | continue; |
626 | ||
e6c10f43 | 627 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
628 | continue; |
629 | ||
e6c10f43 | 630 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
631 | continue; |
632 | ||
e6c10f43 ML |
633 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
634 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
635 | } |
636 | rcu_read_unlock(); | |
637 | ||
e6c10f43 | 638 | hard_iface->if_num = -1; |
c6c8fea2 SE |
639 | return 0; |
640 | ||
641 | err: | |
fb778ea1 | 642 | rcu_read_unlock(); |
c6c8fea2 SE |
643 | return -ENOMEM; |
644 | } |