Commit | Line | Data |
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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" | |
c6c8fea2 | 28 | #include "soft-interface.h" |
23721387 | 29 | #include "bridge_loop_avoidance.h" |
d56b1705 | 30 | #include "network-coding.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, | |
863dd7a8 | 94 | const uint8_t *neigh_addr) |
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, |
d1dc3073 AQ |
112 | "Creating new neighbor %pM on interface %s\n", neigh_addr, |
113 | hard_iface->net_dev->name); | |
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 | ||
d56b1705 MH |
145 | /* Free nc_nodes */ |
146 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
147 | ||
08c36d3e SE |
148 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
149 | "originator timed out"); | |
c6c8fea2 | 150 | |
a73105b8 | 151 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
152 | kfree(orig_node->bcast_own); |
153 | kfree(orig_node->bcast_own_sum); | |
154 | kfree(orig_node); | |
155 | } | |
156 | ||
72822225 LL |
157 | /** |
158 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
159 | * schedule an rcu callback for freeing it | |
160 | * @orig_node: the orig node to free | |
161 | */ | |
56303d34 | 162 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
163 | { |
164 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 165 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
166 | } |
167 | ||
72822225 LL |
168 | /** |
169 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
170 | * possibly free it (without rcu callback) | |
171 | * @orig_node: the orig node to free | |
172 | */ | |
173 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
174 | { | |
175 | if (atomic_dec_and_test(&orig_node->refcount)) | |
176 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
177 | } | |
178 | ||
56303d34 | 179 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 180 | { |
5bf74e9c | 181 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 182 | struct hlist_node *node_tmp; |
16b1aba8 | 183 | struct hlist_head *head; |
16b1aba8 | 184 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 185 | struct batadv_orig_node *orig_node; |
c90681b8 | 186 | uint32_t i; |
16b1aba8 ML |
187 | |
188 | if (!hash) | |
c6c8fea2 SE |
189 | return; |
190 | ||
191 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
192 | ||
c6c8fea2 | 193 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
194 | |
195 | for (i = 0; i < hash->size; i++) { | |
196 | head = &hash->table[i]; | |
197 | list_lock = &hash->list_locks[i]; | |
198 | ||
199 | spin_lock_bh(list_lock); | |
b67bfe0d | 200 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 201 | head, hash_entry) { |
b67bfe0d | 202 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 203 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
204 | } |
205 | spin_unlock_bh(list_lock); | |
206 | } | |
207 | ||
1a8eaf07 | 208 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
209 | } |
210 | ||
211 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
212 | * address if it does not exits |
213 | */ | |
56303d34 SE |
214 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
215 | const uint8_t *addr) | |
c6c8fea2 | 216 | { |
56303d34 | 217 | struct batadv_orig_node *orig_node; |
c6c8fea2 SE |
218 | int size; |
219 | int hash_added; | |
42d0b044 | 220 | unsigned long reset_time; |
c6c8fea2 | 221 | |
da641193 | 222 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 223 | if (orig_node) |
c6c8fea2 SE |
224 | return orig_node; |
225 | ||
39c75a51 SE |
226 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
227 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 228 | |
704509b8 | 229 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
230 | if (!orig_node) |
231 | return NULL; | |
232 | ||
9591a79f | 233 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 234 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 235 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 236 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 237 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 238 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee | 239 | |
d56b1705 MH |
240 | batadv_nc_init_orig(orig_node); |
241 | ||
7b36e8ee ML |
242 | /* extra reference for return */ |
243 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 244 | |
17071578 | 245 | orig_node->tt_initialised = false; |
16b1aba8 | 246 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 247 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 248 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 249 | orig_node->router = NULL; |
c8c991bf AQ |
250 | orig_node->tt_crc = 0; |
251 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 252 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
253 | orig_node->tt_buff_len = 0; |
254 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
255 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
256 | orig_node->bcast_seqno_reset = reset_time; | |
257 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 258 | |
a4c135c5 SW |
259 | atomic_set(&orig_node->bond_candidates, 0); |
260 | ||
42d0b044 | 261 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
262 | |
263 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
264 | if (!orig_node->bcast_own) | |
265 | goto free_orig_node; | |
266 | ||
267 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
268 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
269 | ||
c6c8fea2 SE |
270 | if (!orig_node->bcast_own_sum) |
271 | goto free_bcast_own; | |
272 | ||
03fc7f86 | 273 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 274 | batadv_choose_orig, orig_node, |
c0a55929 | 275 | &orig_node->hash_entry); |
1a1f37d9 | 276 | if (hash_added != 0) |
c6c8fea2 SE |
277 | goto free_bcast_own_sum; |
278 | ||
279 | return orig_node; | |
280 | free_bcast_own_sum: | |
281 | kfree(orig_node->bcast_own_sum); | |
282 | free_bcast_own: | |
283 | kfree(orig_node->bcast_own); | |
284 | free_orig_node: | |
285 | kfree(orig_node); | |
286 | return NULL; | |
287 | } | |
288 | ||
56303d34 SE |
289 | static bool |
290 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
291 | struct batadv_orig_node *orig_node, | |
292 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 293 | { |
b67bfe0d | 294 | struct hlist_node *node_tmp; |
56303d34 | 295 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 296 | bool neigh_purged = false; |
0b0094e0 | 297 | unsigned long last_seen; |
56303d34 | 298 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
299 | |
300 | *best_neigh_node = NULL; | |
301 | ||
f987ed6e ML |
302 | spin_lock_bh(&orig_node->neigh_list_lock); |
303 | ||
c6c8fea2 | 304 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 305 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 306 | &orig_node->neigh_list, list) { |
1eda58bf SE |
307 | last_seen = neigh_node->last_seen; |
308 | if_incoming = neigh_node->if_incoming; | |
309 | ||
42d0b044 | 310 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
311 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
312 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
313 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
314 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
315 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
316 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 317 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
318 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
319 | orig_node->orig, neigh_node->addr, | |
320 | if_incoming->net_dev->name); | |
c6c8fea2 | 321 | else |
39c75a51 | 322 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
323 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
324 | orig_node->orig, neigh_node->addr, | |
325 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
326 | |
327 | neigh_purged = true; | |
9591a79f | 328 | |
f987ed6e | 329 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 330 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 331 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
332 | } else { |
333 | if ((!*best_neigh_node) || | |
334 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
335 | *best_neigh_node = neigh_node; | |
336 | } | |
337 | } | |
f987ed6e ML |
338 | |
339 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
340 | return neigh_purged; |
341 | } | |
342 | ||
56303d34 SE |
343 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
344 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 345 | { |
56303d34 | 346 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 347 | |
42d0b044 SE |
348 | if (batadv_has_timed_out(orig_node->last_seen, |
349 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 350 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
351 | "Originator timeout: originator %pM, last_seen %u\n", |
352 | orig_node->orig, | |
353 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
354 | return true; |
355 | } else { | |
03fc7f86 SE |
356 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
357 | &best_neigh_node)) | |
30d3c511 SE |
358 | batadv_update_route(bat_priv, orig_node, |
359 | best_neigh_node); | |
c6c8fea2 SE |
360 | } |
361 | ||
362 | return false; | |
363 | } | |
364 | ||
56303d34 | 365 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 366 | { |
5bf74e9c | 367 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 368 | struct hlist_node *node_tmp; |
c6c8fea2 | 369 | struct hlist_head *head; |
fb778ea1 | 370 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 371 | struct batadv_orig_node *orig_node; |
c90681b8 | 372 | uint32_t i; |
c6c8fea2 SE |
373 | |
374 | if (!hash) | |
375 | return; | |
376 | ||
c6c8fea2 SE |
377 | /* for all origins... */ |
378 | for (i = 0; i < hash->size; i++) { | |
379 | head = &hash->table[i]; | |
fb778ea1 | 380 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 381 | |
fb778ea1 | 382 | spin_lock_bh(list_lock); |
b67bfe0d | 383 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 384 | head, hash_entry) { |
03fc7f86 | 385 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 386 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 387 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 388 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 389 | continue; |
c6c8fea2 | 390 | } |
c6c8fea2 | 391 | } |
fb778ea1 | 392 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
393 | } |
394 | ||
7cf06bc6 SE |
395 | batadv_gw_node_purge(bat_priv); |
396 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
397 | } |
398 | ||
03fc7f86 | 399 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 400 | { |
56303d34 SE |
401 | struct delayed_work *delayed_work; |
402 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 403 | |
56303d34 SE |
404 | delayed_work = container_of(work, struct delayed_work, work); |
405 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 406 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
407 | queue_delayed_work(batadv_event_workqueue, |
408 | &bat_priv->orig_work, | |
409 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
410 | } |
411 | ||
56303d34 | 412 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 413 | { |
03fc7f86 | 414 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
415 | } |
416 | ||
7d211efc | 417 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
418 | { |
419 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 420 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 421 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 422 | struct hlist_head *head; |
56303d34 SE |
423 | struct batadv_hard_iface *primary_if; |
424 | struct batadv_orig_node *orig_node; | |
425 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
426 | int batman_count = 0; |
427 | int last_seen_secs; | |
428 | int last_seen_msecs; | |
0aca2369 | 429 | unsigned long last_seen_jiffies; |
c90681b8 | 430 | uint32_t i; |
32ae9b22 | 431 | |
30da63a6 ML |
432 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
433 | if (!primary_if) | |
32ae9b22 | 434 | goto out; |
c6c8fea2 | 435 | |
44c4349a | 436 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 437 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 438 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 439 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
440 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
441 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 442 | |
c6c8fea2 SE |
443 | for (i = 0; i < hash->size; i++) { |
444 | head = &hash->table[i]; | |
445 | ||
fb778ea1 | 446 | rcu_read_lock(); |
b67bfe0d | 447 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
7d211efc | 448 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 449 | if (!neigh_node) |
c6c8fea2 SE |
450 | continue; |
451 | ||
e1a5382f LL |
452 | if (neigh_node->tq_avg == 0) |
453 | goto next; | |
c6c8fea2 | 454 | |
0aca2369 SE |
455 | last_seen_jiffies = jiffies - orig_node->last_seen; |
456 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
457 | last_seen_secs = last_seen_msecs / 1000; | |
458 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 459 | |
c6c8fea2 SE |
460 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
461 | orig_node->orig, last_seen_secs, | |
462 | last_seen_msecs, neigh_node->tq_avg, | |
463 | neigh_node->addr, | |
464 | neigh_node->if_incoming->net_dev->name); | |
465 | ||
b67bfe0d | 466 | hlist_for_each_entry_rcu(neigh_node_tmp, |
f987ed6e | 467 | &orig_node->neigh_list, list) { |
e1a5382f LL |
468 | seq_printf(seq, " %pM (%3i)", |
469 | neigh_node_tmp->addr, | |
470 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
471 | } |
472 | ||
0c814653 | 473 | seq_puts(seq, "\n"); |
c6c8fea2 | 474 | batman_count++; |
e1a5382f LL |
475 | |
476 | next: | |
7d211efc | 477 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 478 | } |
fb778ea1 | 479 | rcu_read_unlock(); |
c6c8fea2 SE |
480 | } |
481 | ||
e1a5382f | 482 | if (batman_count == 0) |
0c814653 | 483 | seq_puts(seq, "No batman nodes in range ...\n"); |
c6c8fea2 | 484 | |
32ae9b22 ML |
485 | out: |
486 | if (primary_if) | |
e5d89254 | 487 | batadv_hardif_free_ref(primary_if); |
30da63a6 | 488 | return 0; |
c6c8fea2 SE |
489 | } |
490 | ||
56303d34 SE |
491 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
492 | int max_if_num) | |
c6c8fea2 SE |
493 | { |
494 | void *data_ptr; | |
42d0b044 | 495 | size_t data_size, old_size; |
c6c8fea2 | 496 | |
42d0b044 SE |
497 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
498 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
499 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 500 | if (!data_ptr) |
5346c35e | 501 | return -ENOMEM; |
c6c8fea2 | 502 | |
42d0b044 | 503 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
504 | kfree(orig_node->bcast_own); |
505 | orig_node->bcast_own = data_ptr; | |
506 | ||
507 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 508 | if (!data_ptr) |
5346c35e | 509 | return -ENOMEM; |
c6c8fea2 SE |
510 | |
511 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
512 | (max_if_num - 1) * sizeof(uint8_t)); | |
513 | kfree(orig_node->bcast_own_sum); | |
514 | orig_node->bcast_own_sum = data_ptr; | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
56303d34 SE |
519 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
520 | int max_if_num) | |
c6c8fea2 | 521 | { |
56303d34 | 522 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 523 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 524 | struct hlist_head *head; |
56303d34 | 525 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
526 | uint32_t i; |
527 | int ret; | |
c6c8fea2 SE |
528 | |
529 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
530 | * if_num |
531 | */ | |
c6c8fea2 SE |
532 | for (i = 0; i < hash->size; i++) { |
533 | head = &hash->table[i]; | |
534 | ||
fb778ea1 | 535 | rcu_read_lock(); |
b67bfe0d | 536 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 537 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 538 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
539 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
540 | ||
5346c35e | 541 | if (ret == -ENOMEM) |
c6c8fea2 SE |
542 | goto err; |
543 | } | |
fb778ea1 | 544 | rcu_read_unlock(); |
c6c8fea2 SE |
545 | } |
546 | ||
c6c8fea2 SE |
547 | return 0; |
548 | ||
549 | err: | |
fb778ea1 | 550 | rcu_read_unlock(); |
c6c8fea2 SE |
551 | return -ENOMEM; |
552 | } | |
553 | ||
56303d34 | 554 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 555 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
556 | { |
557 | void *data_ptr = NULL; | |
558 | int chunk_size; | |
559 | ||
560 | /* last interface was removed */ | |
561 | if (max_if_num == 0) | |
562 | goto free_bcast_own; | |
563 | ||
42d0b044 | 564 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 565 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 566 | if (!data_ptr) |
5346c35e | 567 | return -ENOMEM; |
c6c8fea2 SE |
568 | |
569 | /* copy first part */ | |
570 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
571 | ||
572 | /* copy second part */ | |
38e3c5f0 | 573 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
574 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
575 | (max_if_num - del_if_num) * chunk_size); | |
576 | ||
577 | free_bcast_own: | |
578 | kfree(orig_node->bcast_own); | |
579 | orig_node->bcast_own = data_ptr; | |
580 | ||
581 | if (max_if_num == 0) | |
582 | goto free_own_sum; | |
583 | ||
584 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 585 | if (!data_ptr) |
5346c35e | 586 | return -ENOMEM; |
c6c8fea2 SE |
587 | |
588 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
589 | del_if_num * sizeof(uint8_t)); | |
590 | ||
38e3c5f0 | 591 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
592 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
593 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
594 | ||
595 | free_own_sum: | |
596 | kfree(orig_node->bcast_own_sum); | |
597 | orig_node->bcast_own_sum = data_ptr; | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
56303d34 SE |
602 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
603 | int max_if_num) | |
c6c8fea2 | 604 | { |
56303d34 | 605 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 606 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 607 | struct hlist_head *head; |
56303d34 SE |
608 | struct batadv_hard_iface *hard_iface_tmp; |
609 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
610 | uint32_t i; |
611 | int ret; | |
c6c8fea2 SE |
612 | |
613 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
614 | * if_num |
615 | */ | |
c6c8fea2 SE |
616 | for (i = 0; i < hash->size; i++) { |
617 | head = &hash->table[i]; | |
618 | ||
fb778ea1 | 619 | rcu_read_lock(); |
b67bfe0d | 620 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 621 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
622 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
623 | hard_iface->if_num); | |
2ae2daf6 | 624 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 625 | |
5346c35e | 626 | if (ret == -ENOMEM) |
c6c8fea2 SE |
627 | goto err; |
628 | } | |
fb778ea1 | 629 | rcu_read_unlock(); |
c6c8fea2 SE |
630 | } |
631 | ||
632 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
633 | rcu_read_lock(); | |
3193e8fd | 634 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 635 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
636 | continue; |
637 | ||
e6c10f43 | 638 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
639 | continue; |
640 | ||
e6c10f43 | 641 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
642 | continue; |
643 | ||
e6c10f43 ML |
644 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
645 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
646 | } |
647 | rcu_read_unlock(); | |
648 | ||
e6c10f43 | 649 | hard_iface->if_num = -1; |
c6c8fea2 SE |
650 | return 0; |
651 | ||
652 | err: | |
fb778ea1 | 653 | rcu_read_unlock(); |
c6c8fea2 SE |
654 | return -ENOMEM; |
655 | } |