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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" |
d56b1705 | 31 | #include "network-coding.h" |
c6c8fea2 | 32 | |
dec05074 AQ |
33 | /* hash class keys */ |
34 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
35 | ||
03fc7f86 | 36 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 37 | |
b8e2dd13 | 38 | /* returns 1 if they are the same originator */ |
03fc7f86 | 39 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 40 | { |
56303d34 SE |
41 | const void *data1 = container_of(node, struct batadv_orig_node, |
42 | hash_entry); | |
b8e2dd13 SE |
43 | |
44 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
45 | } | |
46 | ||
56303d34 | 47 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
48 | { |
49 | if (bat_priv->orig_hash) | |
5346c35e | 50 | return 0; |
c6c8fea2 | 51 | |
1a8eaf07 | 52 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
53 | |
54 | if (!bat_priv->orig_hash) | |
55 | goto err; | |
56 | ||
dec05074 AQ |
57 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
58 | &batadv_orig_hash_lock_class_key); | |
59 | ||
72414442 AQ |
60 | 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 | ||
5346c35e | 65 | return 0; |
c6c8fea2 SE |
66 | |
67 | err: | |
5346c35e | 68 | return -ENOMEM; |
c6c8fea2 SE |
69 | } |
70 | ||
56303d34 | 71 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 72 | { |
44524fcd | 73 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 74 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
75 | } |
76 | ||
e1a5382f | 77 | /* increases the refcounter of a found router */ |
56303d34 SE |
78 | struct batadv_neigh_node * |
79 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 80 | { |
56303d34 | 81 | struct batadv_neigh_node *router; |
e1a5382f LL |
82 | |
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 | ||
56303d34 SE |
93 | struct batadv_neigh_node * |
94 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
95 | const uint8_t *neigh_addr, uint32_t seqno) | |
c6c8fea2 | 96 | { |
56303d34 SE |
97 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
98 | struct batadv_neigh_node *neigh_node; | |
c6c8fea2 | 99 | |
704509b8 | 100 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 101 | if (!neigh_node) |
7ae8b285 | 102 | goto out; |
c6c8fea2 | 103 | |
9591a79f | 104 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 105 | |
7ae8b285 | 106 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 107 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
108 | |
109 | /* extra reference for return */ | |
110 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 111 | |
39c75a51 | 112 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
113 | "Creating new neighbor %pM, initial seqno %d\n", |
114 | neigh_addr, seqno); | |
7ae8b285 ML |
115 | |
116 | out: | |
c6c8fea2 SE |
117 | return neigh_node; |
118 | } | |
119 | ||
03fc7f86 | 120 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 121 | { |
b67bfe0d | 122 | struct hlist_node *node_tmp; |
56303d34 SE |
123 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
124 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 125 | |
56303d34 | 126 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 127 | |
f987ed6e ML |
128 | spin_lock_bh(&orig_node->neigh_list_lock); |
129 | ||
a4c135c5 SW |
130 | /* 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); | |
7d211efc | 134 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
135 | } |
136 | ||
c6c8fea2 | 137 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 138 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 139 | &orig_node->neigh_list, list) { |
f987ed6e | 140 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 141 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
142 | } |
143 | ||
f987ed6e ML |
144 | spin_unlock_bh(&orig_node->neigh_list_lock); |
145 | ||
d56b1705 MH |
146 | /* Free nc_nodes */ |
147 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
148 | ||
88ed1e77 | 149 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
150 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
151 | "originator timed out"); | |
c6c8fea2 | 152 | |
a73105b8 | 153 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
154 | kfree(orig_node->bcast_own); |
155 | kfree(orig_node->bcast_own_sum); | |
156 | kfree(orig_node); | |
157 | } | |
158 | ||
72822225 LL |
159 | /** |
160 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
161 | * schedule an rcu callback for freeing it | |
162 | * @orig_node: the orig node to free | |
163 | */ | |
56303d34 | 164 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
165 | { |
166 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 167 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
168 | } |
169 | ||
72822225 LL |
170 | /** |
171 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
172 | * possibly free it (without rcu callback) | |
173 | * @orig_node: the orig node to free | |
174 | */ | |
175 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
176 | { | |
177 | if (atomic_dec_and_test(&orig_node->refcount)) | |
178 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
179 | } | |
180 | ||
56303d34 | 181 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 182 | { |
5bf74e9c | 183 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 184 | struct hlist_node *node_tmp; |
16b1aba8 | 185 | struct hlist_head *head; |
16b1aba8 | 186 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 187 | struct batadv_orig_node *orig_node; |
c90681b8 | 188 | uint32_t i; |
16b1aba8 ML |
189 | |
190 | if (!hash) | |
c6c8fea2 SE |
191 | return; |
192 | ||
193 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
194 | ||
c6c8fea2 | 195 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
196 | |
197 | for (i = 0; i < hash->size; i++) { | |
198 | head = &hash->table[i]; | |
199 | list_lock = &hash->list_locks[i]; | |
200 | ||
201 | spin_lock_bh(list_lock); | |
b67bfe0d | 202 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 203 | head, hash_entry) { |
b67bfe0d | 204 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 205 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
206 | } |
207 | spin_unlock_bh(list_lock); | |
208 | } | |
209 | ||
1a8eaf07 | 210 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
211 | } |
212 | ||
213 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
214 | * address if it does not exits |
215 | */ | |
56303d34 SE |
216 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
217 | const uint8_t *addr) | |
c6c8fea2 | 218 | { |
56303d34 | 219 | struct batadv_orig_node *orig_node; |
c6c8fea2 SE |
220 | int size; |
221 | int hash_added; | |
42d0b044 | 222 | unsigned long reset_time; |
c6c8fea2 | 223 | |
da641193 | 224 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 225 | if (orig_node) |
c6c8fea2 SE |
226 | return orig_node; |
227 | ||
39c75a51 SE |
228 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
229 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 230 | |
704509b8 | 231 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
232 | if (!orig_node) |
233 | return NULL; | |
234 | ||
9591a79f | 235 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 236 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 237 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 238 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 239 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 240 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee | 241 | |
d56b1705 MH |
242 | batadv_nc_init_orig(orig_node); |
243 | ||
7b36e8ee ML |
244 | /* extra reference for return */ |
245 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 246 | |
17071578 | 247 | orig_node->tt_initialised = false; |
16b1aba8 | 248 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 249 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 250 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 251 | orig_node->router = NULL; |
c8c991bf AQ |
252 | orig_node->tt_crc = 0; |
253 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 254 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
255 | orig_node->tt_buff_len = 0; |
256 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
257 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
258 | orig_node->bcast_seqno_reset = reset_time; | |
259 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 260 | |
a4c135c5 SW |
261 | atomic_set(&orig_node->bond_candidates, 0); |
262 | ||
42d0b044 | 263 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
264 | |
265 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
266 | if (!orig_node->bcast_own) | |
267 | goto free_orig_node; | |
268 | ||
269 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
270 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
271 | ||
272 | INIT_LIST_HEAD(&orig_node->frag_list); | |
273 | orig_node->last_frag_packet = 0; | |
274 | ||
275 | if (!orig_node->bcast_own_sum) | |
276 | goto free_bcast_own; | |
277 | ||
03fc7f86 | 278 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 279 | batadv_choose_orig, orig_node, |
c0a55929 | 280 | &orig_node->hash_entry); |
1a1f37d9 | 281 | if (hash_added != 0) |
c6c8fea2 SE |
282 | goto free_bcast_own_sum; |
283 | ||
284 | return orig_node; | |
285 | free_bcast_own_sum: | |
286 | kfree(orig_node->bcast_own_sum); | |
287 | free_bcast_own: | |
288 | kfree(orig_node->bcast_own); | |
289 | free_orig_node: | |
290 | kfree(orig_node); | |
291 | return NULL; | |
292 | } | |
293 | ||
56303d34 SE |
294 | static bool |
295 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
296 | struct batadv_orig_node *orig_node, | |
297 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 298 | { |
b67bfe0d | 299 | struct hlist_node *node_tmp; |
56303d34 | 300 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 301 | bool neigh_purged = false; |
0b0094e0 | 302 | unsigned long last_seen; |
56303d34 | 303 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
304 | |
305 | *best_neigh_node = NULL; | |
306 | ||
f987ed6e ML |
307 | spin_lock_bh(&orig_node->neigh_list_lock); |
308 | ||
c6c8fea2 | 309 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 310 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 311 | &orig_node->neigh_list, list) { |
1eda58bf SE |
312 | last_seen = neigh_node->last_seen; |
313 | if_incoming = neigh_node->if_incoming; | |
314 | ||
42d0b044 | 315 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
316 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
317 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
318 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
319 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
320 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
321 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 322 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
323 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
324 | orig_node->orig, neigh_node->addr, | |
325 | if_incoming->net_dev->name); | |
c6c8fea2 | 326 | else |
39c75a51 | 327 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
328 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
329 | orig_node->orig, neigh_node->addr, | |
330 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
331 | |
332 | neigh_purged = true; | |
9591a79f | 333 | |
f987ed6e | 334 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 335 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 336 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
337 | } else { |
338 | if ((!*best_neigh_node) || | |
339 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
340 | *best_neigh_node = neigh_node; | |
341 | } | |
342 | } | |
f987ed6e ML |
343 | |
344 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
345 | return neigh_purged; |
346 | } | |
347 | ||
56303d34 SE |
348 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
349 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 350 | { |
56303d34 | 351 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 352 | |
42d0b044 SE |
353 | if (batadv_has_timed_out(orig_node->last_seen, |
354 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 355 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
356 | "Originator timeout: originator %pM, last_seen %u\n", |
357 | orig_node->orig, | |
358 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
359 | return true; |
360 | } else { | |
03fc7f86 SE |
361 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
362 | &best_neigh_node)) | |
30d3c511 SE |
363 | batadv_update_route(bat_priv, orig_node, |
364 | best_neigh_node); | |
c6c8fea2 SE |
365 | } |
366 | ||
367 | return false; | |
368 | } | |
369 | ||
56303d34 | 370 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 371 | { |
5bf74e9c | 372 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 373 | struct hlist_node *node_tmp; |
c6c8fea2 | 374 | struct hlist_head *head; |
fb778ea1 | 375 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 376 | struct batadv_orig_node *orig_node; |
c90681b8 | 377 | uint32_t i; |
c6c8fea2 SE |
378 | |
379 | if (!hash) | |
380 | return; | |
381 | ||
c6c8fea2 SE |
382 | /* for all origins... */ |
383 | for (i = 0; i < hash->size; i++) { | |
384 | head = &hash->table[i]; | |
fb778ea1 | 385 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 386 | |
fb778ea1 | 387 | spin_lock_bh(list_lock); |
b67bfe0d | 388 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 389 | head, hash_entry) { |
03fc7f86 | 390 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
c6c8fea2 | 391 | if (orig_node->gw_flags) |
7cf06bc6 SE |
392 | batadv_gw_node_delete(bat_priv, |
393 | orig_node); | |
b67bfe0d | 394 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 395 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 396 | continue; |
c6c8fea2 SE |
397 | } |
398 | ||
1eda58bf | 399 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
4d5d2db8 | 400 | BATADV_FRAG_TIMEOUT)) |
88ed1e77 | 401 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 402 | } |
fb778ea1 | 403 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
404 | } |
405 | ||
7cf06bc6 SE |
406 | batadv_gw_node_purge(bat_priv); |
407 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
408 | } |
409 | ||
03fc7f86 | 410 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 411 | { |
56303d34 SE |
412 | struct delayed_work *delayed_work; |
413 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 414 | |
56303d34 SE |
415 | delayed_work = container_of(work, struct delayed_work, work); |
416 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 417 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
418 | queue_delayed_work(batadv_event_workqueue, |
419 | &bat_priv->orig_work, | |
420 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
421 | } |
422 | ||
56303d34 | 423 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 424 | { |
03fc7f86 | 425 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
426 | } |
427 | ||
7d211efc | 428 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
429 | { |
430 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 431 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 432 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 433 | struct hlist_head *head; |
56303d34 SE |
434 | struct batadv_hard_iface *primary_if; |
435 | struct batadv_orig_node *orig_node; | |
436 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
437 | int batman_count = 0; |
438 | int last_seen_secs; | |
439 | int last_seen_msecs; | |
0aca2369 | 440 | unsigned long last_seen_jiffies; |
c90681b8 | 441 | uint32_t i; |
32ae9b22 | 442 | |
30da63a6 ML |
443 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
444 | if (!primary_if) | |
32ae9b22 | 445 | goto out; |
c6c8fea2 | 446 | |
44c4349a | 447 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 448 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 449 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 450 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
451 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
452 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 453 | |
c6c8fea2 SE |
454 | for (i = 0; i < hash->size; i++) { |
455 | head = &hash->table[i]; | |
456 | ||
fb778ea1 | 457 | rcu_read_lock(); |
b67bfe0d | 458 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
7d211efc | 459 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 460 | if (!neigh_node) |
c6c8fea2 SE |
461 | continue; |
462 | ||
e1a5382f LL |
463 | if (neigh_node->tq_avg == 0) |
464 | goto next; | |
c6c8fea2 | 465 | |
0aca2369 SE |
466 | last_seen_jiffies = jiffies - orig_node->last_seen; |
467 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
468 | last_seen_secs = last_seen_msecs / 1000; | |
469 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 470 | |
c6c8fea2 SE |
471 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
472 | orig_node->orig, last_seen_secs, | |
473 | last_seen_msecs, neigh_node->tq_avg, | |
474 | neigh_node->addr, | |
475 | neigh_node->if_incoming->net_dev->name); | |
476 | ||
b67bfe0d | 477 | hlist_for_each_entry_rcu(neigh_node_tmp, |
f987ed6e | 478 | &orig_node->neigh_list, list) { |
e1a5382f LL |
479 | seq_printf(seq, " %pM (%3i)", |
480 | neigh_node_tmp->addr, | |
481 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
482 | } |
483 | ||
0c814653 | 484 | seq_puts(seq, "\n"); |
c6c8fea2 | 485 | batman_count++; |
e1a5382f LL |
486 | |
487 | next: | |
7d211efc | 488 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 489 | } |
fb778ea1 | 490 | rcu_read_unlock(); |
c6c8fea2 SE |
491 | } |
492 | ||
e1a5382f | 493 | if (batman_count == 0) |
0c814653 | 494 | seq_puts(seq, "No batman nodes in range ...\n"); |
c6c8fea2 | 495 | |
32ae9b22 ML |
496 | out: |
497 | if (primary_if) | |
e5d89254 | 498 | batadv_hardif_free_ref(primary_if); |
30da63a6 | 499 | return 0; |
c6c8fea2 SE |
500 | } |
501 | ||
56303d34 SE |
502 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
503 | int max_if_num) | |
c6c8fea2 SE |
504 | { |
505 | void *data_ptr; | |
42d0b044 | 506 | size_t data_size, old_size; |
c6c8fea2 | 507 | |
42d0b044 SE |
508 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
509 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
510 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 511 | if (!data_ptr) |
5346c35e | 512 | return -ENOMEM; |
c6c8fea2 | 513 | |
42d0b044 | 514 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
515 | kfree(orig_node->bcast_own); |
516 | orig_node->bcast_own = data_ptr; | |
517 | ||
518 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 519 | if (!data_ptr) |
5346c35e | 520 | return -ENOMEM; |
c6c8fea2 SE |
521 | |
522 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
523 | (max_if_num - 1) * sizeof(uint8_t)); | |
524 | kfree(orig_node->bcast_own_sum); | |
525 | orig_node->bcast_own_sum = data_ptr; | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
56303d34 SE |
530 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
531 | int max_if_num) | |
c6c8fea2 | 532 | { |
56303d34 | 533 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 534 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 535 | struct hlist_head *head; |
56303d34 | 536 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
537 | uint32_t i; |
538 | int ret; | |
c6c8fea2 SE |
539 | |
540 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
541 | * if_num |
542 | */ | |
c6c8fea2 SE |
543 | for (i = 0; i < hash->size; i++) { |
544 | head = &hash->table[i]; | |
545 | ||
fb778ea1 | 546 | rcu_read_lock(); |
b67bfe0d | 547 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 548 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 549 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
550 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
551 | ||
5346c35e | 552 | if (ret == -ENOMEM) |
c6c8fea2 SE |
553 | goto err; |
554 | } | |
fb778ea1 | 555 | rcu_read_unlock(); |
c6c8fea2 SE |
556 | } |
557 | ||
c6c8fea2 SE |
558 | return 0; |
559 | ||
560 | err: | |
fb778ea1 | 561 | rcu_read_unlock(); |
c6c8fea2 SE |
562 | return -ENOMEM; |
563 | } | |
564 | ||
56303d34 | 565 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 566 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
567 | { |
568 | void *data_ptr = NULL; | |
569 | int chunk_size; | |
570 | ||
571 | /* last interface was removed */ | |
572 | if (max_if_num == 0) | |
573 | goto free_bcast_own; | |
574 | ||
42d0b044 | 575 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 576 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 577 | if (!data_ptr) |
5346c35e | 578 | return -ENOMEM; |
c6c8fea2 SE |
579 | |
580 | /* copy first part */ | |
581 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
582 | ||
583 | /* copy second part */ | |
38e3c5f0 | 584 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
585 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
586 | (max_if_num - del_if_num) * chunk_size); | |
587 | ||
588 | free_bcast_own: | |
589 | kfree(orig_node->bcast_own); | |
590 | orig_node->bcast_own = data_ptr; | |
591 | ||
592 | if (max_if_num == 0) | |
593 | goto free_own_sum; | |
594 | ||
595 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 596 | if (!data_ptr) |
5346c35e | 597 | return -ENOMEM; |
c6c8fea2 SE |
598 | |
599 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
600 | del_if_num * sizeof(uint8_t)); | |
601 | ||
38e3c5f0 | 602 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
603 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
604 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
605 | ||
606 | free_own_sum: | |
607 | kfree(orig_node->bcast_own_sum); | |
608 | orig_node->bcast_own_sum = data_ptr; | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
56303d34 SE |
613 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
614 | int max_if_num) | |
c6c8fea2 | 615 | { |
56303d34 | 616 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 617 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 618 | struct hlist_head *head; |
56303d34 SE |
619 | struct batadv_hard_iface *hard_iface_tmp; |
620 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
621 | uint32_t i; |
622 | int ret; | |
c6c8fea2 SE |
623 | |
624 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
625 | * if_num |
626 | */ | |
c6c8fea2 SE |
627 | for (i = 0; i < hash->size; i++) { |
628 | head = &hash->table[i]; | |
629 | ||
fb778ea1 | 630 | rcu_read_lock(); |
b67bfe0d | 631 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 632 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
633 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
634 | hard_iface->if_num); | |
2ae2daf6 | 635 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 636 | |
5346c35e | 637 | if (ret == -ENOMEM) |
c6c8fea2 SE |
638 | goto err; |
639 | } | |
fb778ea1 | 640 | rcu_read_unlock(); |
c6c8fea2 SE |
641 | } |
642 | ||
643 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
644 | rcu_read_lock(); | |
3193e8fd | 645 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 646 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
647 | continue; |
648 | ||
e6c10f43 | 649 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
650 | continue; |
651 | ||
e6c10f43 | 652 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
653 | continue; |
654 | ||
e6c10f43 ML |
655 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
656 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
657 | } |
658 | rcu_read_unlock(); | |
659 | ||
e6c10f43 | 660 | hard_iface->if_num = -1; |
c6c8fea2 SE |
661 | return 0; |
662 | ||
663 | err: | |
fb778ea1 | 664 | rcu_read_unlock(); |
c6c8fea2 SE |
665 | return -ENOMEM; |
666 | } |