Commit | Line | Data |
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9cfc7bd6 | 1 | /* Copyright (C) 2009-2012 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 SE |
20 | #include "main.h" |
21 | #include "originator.h" | |
22 | #include "hash.h" | |
23 | #include "translation-table.h" | |
24 | #include "routing.h" | |
25 | #include "gateway_client.h" | |
26 | #include "hard-interface.h" | |
27 | #include "unicast.h" | |
28 | #include "soft-interface.h" | |
23721387 | 29 | #include "bridge_loop_avoidance.h" |
c6c8fea2 | 30 | |
03fc7f86 | 31 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 32 | |
03fc7f86 | 33 | static void batadv_start_purge_timer(struct bat_priv *bat_priv) |
c6c8fea2 | 34 | { |
03fc7f86 | 35 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
3193e8fd | 36 | queue_delayed_work(batadv_event_workqueue, |
0b0094e0 | 37 | &bat_priv->orig_work, msecs_to_jiffies(1000)); |
c6c8fea2 SE |
38 | } |
39 | ||
b8e2dd13 | 40 | /* returns 1 if they are the same originator */ |
03fc7f86 | 41 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 SE |
42 | { |
43 | const void *data1 = container_of(node, struct orig_node, hash_entry); | |
44 | ||
45 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
46 | } | |
47 | ||
7d211efc | 48 | int batadv_originator_init(struct bat_priv *bat_priv) |
c6c8fea2 SE |
49 | { |
50 | if (bat_priv->orig_hash) | |
5346c35e | 51 | return 0; |
c6c8fea2 | 52 | |
1a8eaf07 | 53 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
54 | |
55 | if (!bat_priv->orig_hash) | |
56 | goto err; | |
57 | ||
03fc7f86 | 58 | batadv_start_purge_timer(bat_priv); |
5346c35e | 59 | return 0; |
c6c8fea2 SE |
60 | |
61 | err: | |
5346c35e | 62 | return -ENOMEM; |
c6c8fea2 SE |
63 | } |
64 | ||
7d211efc | 65 | void batadv_neigh_node_free_ref(struct neigh_node *neigh_node) |
a4c135c5 | 66 | { |
44524fcd | 67 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 68 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
69 | } |
70 | ||
e1a5382f | 71 | /* increases the refcounter of a found router */ |
7d211efc | 72 | struct neigh_node *batadv_orig_node_get_router(struct orig_node *orig_node) |
e1a5382f LL |
73 | { |
74 | struct neigh_node *router; | |
75 | ||
76 | rcu_read_lock(); | |
77 | router = rcu_dereference(orig_node->router); | |
78 | ||
79 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
80 | router = NULL; | |
81 | ||
82 | rcu_read_unlock(); | |
83 | return router; | |
84 | } | |
85 | ||
7ae8b285 ML |
86 | struct neigh_node *batadv_neigh_node_new(struct hard_iface *hard_iface, |
87 | const uint8_t *neigh_addr, | |
88 | uint32_t seqno) | |
c6c8fea2 | 89 | { |
7ae8b285 | 90 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 SE |
91 | struct neigh_node *neigh_node; |
92 | ||
704509b8 | 93 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 94 | if (!neigh_node) |
7ae8b285 | 95 | goto out; |
c6c8fea2 | 96 | |
9591a79f | 97 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 98 | |
7ae8b285 | 99 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 100 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
101 | |
102 | /* extra reference for return */ | |
103 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 104 | |
39c75a51 | 105 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
106 | "Creating new neighbor %pM, initial seqno %d\n", |
107 | neigh_addr, seqno); | |
7ae8b285 ML |
108 | |
109 | out: | |
c6c8fea2 SE |
110 | return neigh_node; |
111 | } | |
112 | ||
03fc7f86 | 113 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 114 | { |
9591a79f | 115 | struct hlist_node *node, *node_tmp; |
a4c135c5 | 116 | struct neigh_node *neigh_node, *tmp_neigh_node; |
16b1aba8 ML |
117 | struct orig_node *orig_node; |
118 | ||
7b36e8ee | 119 | orig_node = container_of(rcu, struct orig_node, rcu); |
c6c8fea2 | 120 | |
f987ed6e ML |
121 | spin_lock_bh(&orig_node->neigh_list_lock); |
122 | ||
a4c135c5 SW |
123 | /* for all bonding members ... */ |
124 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
125 | &orig_node->bond_list, bonding_list) { | |
126 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 127 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
128 | } |
129 | ||
c6c8fea2 | 130 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
131 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
132 | &orig_node->neigh_list, list) { | |
f987ed6e | 133 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 134 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
135 | } |
136 | ||
f987ed6e ML |
137 | spin_unlock_bh(&orig_node->neigh_list_lock); |
138 | ||
88ed1e77 | 139 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
140 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
141 | "originator timed out"); | |
c6c8fea2 | 142 | |
a73105b8 | 143 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
144 | kfree(orig_node->bcast_own); |
145 | kfree(orig_node->bcast_own_sum); | |
146 | kfree(orig_node); | |
147 | } | |
148 | ||
7d211efc | 149 | void batadv_orig_node_free_ref(struct orig_node *orig_node) |
7b36e8ee ML |
150 | { |
151 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 152 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
153 | } |
154 | ||
7d211efc | 155 | void batadv_originator_free(struct bat_priv *bat_priv) |
c6c8fea2 | 156 | { |
5bf74e9c | 157 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 158 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 159 | struct hlist_head *head; |
16b1aba8 ML |
160 | spinlock_t *list_lock; /* spinlock to protect write access */ |
161 | struct orig_node *orig_node; | |
c90681b8 | 162 | uint32_t i; |
16b1aba8 ML |
163 | |
164 | if (!hash) | |
c6c8fea2 SE |
165 | return; |
166 | ||
167 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
168 | ||
c6c8fea2 | 169 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
170 | |
171 | for (i = 0; i < hash->size; i++) { | |
172 | head = &hash->table[i]; | |
173 | list_lock = &hash->list_locks[i]; | |
174 | ||
175 | spin_lock_bh(list_lock); | |
7aadf889 ML |
176 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
177 | head, hash_entry) { | |
16b1aba8 | 178 | |
7aadf889 | 179 | hlist_del_rcu(node); |
7d211efc | 180 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
181 | } |
182 | spin_unlock_bh(list_lock); | |
183 | } | |
184 | ||
1a8eaf07 | 185 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
186 | } |
187 | ||
188 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
189 | * address if it does not exits |
190 | */ | |
7d211efc SE |
191 | struct orig_node *batadv_get_orig_node(struct bat_priv *bat_priv, |
192 | const uint8_t *addr) | |
c6c8fea2 SE |
193 | { |
194 | struct orig_node *orig_node; | |
195 | int size; | |
196 | int hash_added; | |
42d0b044 | 197 | unsigned long reset_time; |
c6c8fea2 | 198 | |
da641193 | 199 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 200 | if (orig_node) |
c6c8fea2 SE |
201 | return orig_node; |
202 | ||
39c75a51 SE |
203 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
204 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 205 | |
704509b8 | 206 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
207 | if (!orig_node) |
208 | return NULL; | |
209 | ||
9591a79f | 210 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 211 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 212 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 213 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 214 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 215 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
216 | |
217 | /* extra reference for return */ | |
218 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 219 | |
17071578 | 220 | orig_node->tt_initialised = false; |
cc47f66e | 221 | orig_node->tt_poss_change = false; |
16b1aba8 | 222 | orig_node->bat_priv = bat_priv; |
c6c8fea2 SE |
223 | memcpy(orig_node->orig, addr, ETH_ALEN); |
224 | orig_node->router = NULL; | |
c8c991bf AQ |
225 | orig_node->tt_crc = 0; |
226 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 227 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
228 | orig_node->tt_buff_len = 0; |
229 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
230 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
231 | orig_node->bcast_seqno_reset = reset_time; | |
232 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 233 | |
a4c135c5 SW |
234 | atomic_set(&orig_node->bond_candidates, 0); |
235 | ||
42d0b044 | 236 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
237 | |
238 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
239 | if (!orig_node->bcast_own) | |
240 | goto free_orig_node; | |
241 | ||
242 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
243 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
244 | ||
245 | INIT_LIST_HEAD(&orig_node->frag_list); | |
246 | orig_node->last_frag_packet = 0; | |
247 | ||
248 | if (!orig_node->bcast_own_sum) | |
249 | goto free_bcast_own; | |
250 | ||
03fc7f86 | 251 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 252 | batadv_choose_orig, orig_node, |
c0a55929 | 253 | &orig_node->hash_entry); |
1a1f37d9 | 254 | if (hash_added != 0) |
c6c8fea2 SE |
255 | goto free_bcast_own_sum; |
256 | ||
257 | return orig_node; | |
258 | free_bcast_own_sum: | |
259 | kfree(orig_node->bcast_own_sum); | |
260 | free_bcast_own: | |
261 | kfree(orig_node->bcast_own); | |
262 | free_orig_node: | |
263 | kfree(orig_node); | |
264 | return NULL; | |
265 | } | |
266 | ||
03fc7f86 SE |
267 | static bool batadv_purge_orig_neighbors(struct bat_priv *bat_priv, |
268 | struct orig_node *orig_node, | |
269 | struct neigh_node **best_neigh_node) | |
c6c8fea2 | 270 | { |
9591a79f | 271 | struct hlist_node *node, *node_tmp; |
c6c8fea2 SE |
272 | struct neigh_node *neigh_node; |
273 | bool neigh_purged = false; | |
0b0094e0 | 274 | unsigned long last_seen; |
1eda58bf | 275 | struct hard_iface *if_incoming; |
c6c8fea2 SE |
276 | |
277 | *best_neigh_node = NULL; | |
278 | ||
f987ed6e ML |
279 | spin_lock_bh(&orig_node->neigh_list_lock); |
280 | ||
c6c8fea2 | 281 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
282 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
283 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 284 | |
1eda58bf SE |
285 | last_seen = neigh_node->last_seen; |
286 | if_incoming = neigh_node->if_incoming; | |
287 | ||
42d0b044 | 288 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
289 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
290 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
291 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
1eda58bf | 292 | |
e9a4f295 SE |
293 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
294 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
295 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 296 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
297 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
298 | orig_node->orig, neigh_node->addr, | |
299 | if_incoming->net_dev->name); | |
c6c8fea2 | 300 | else |
39c75a51 | 301 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
302 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
303 | orig_node->orig, neigh_node->addr, | |
304 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
305 | |
306 | neigh_purged = true; | |
9591a79f | 307 | |
f987ed6e | 308 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 309 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 310 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
311 | } else { |
312 | if ((!*best_neigh_node) || | |
313 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
314 | *best_neigh_node = neigh_node; | |
315 | } | |
316 | } | |
f987ed6e ML |
317 | |
318 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
319 | return neigh_purged; |
320 | } | |
321 | ||
03fc7f86 SE |
322 | static bool batadv_purge_orig_node(struct bat_priv *bat_priv, |
323 | struct orig_node *orig_node) | |
c6c8fea2 SE |
324 | { |
325 | struct neigh_node *best_neigh_node; | |
326 | ||
42d0b044 SE |
327 | if (batadv_has_timed_out(orig_node->last_seen, |
328 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 329 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
330 | "Originator timeout: originator %pM, last_seen %u\n", |
331 | orig_node->orig, | |
332 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
333 | return true; |
334 | } else { | |
03fc7f86 SE |
335 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
336 | &best_neigh_node)) | |
30d3c511 SE |
337 | batadv_update_route(bat_priv, orig_node, |
338 | best_neigh_node); | |
c6c8fea2 SE |
339 | } |
340 | ||
341 | return false; | |
342 | } | |
343 | ||
03fc7f86 | 344 | static void _batadv_purge_orig(struct bat_priv *bat_priv) |
c6c8fea2 | 345 | { |
5bf74e9c | 346 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 347 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 348 | struct hlist_head *head; |
fb778ea1 | 349 | spinlock_t *list_lock; /* spinlock to protect write access */ |
c6c8fea2 | 350 | struct orig_node *orig_node; |
c90681b8 | 351 | uint32_t i; |
c6c8fea2 SE |
352 | |
353 | if (!hash) | |
354 | return; | |
355 | ||
c6c8fea2 SE |
356 | /* for all origins... */ |
357 | for (i = 0; i < hash->size; i++) { | |
358 | head = &hash->table[i]; | |
fb778ea1 | 359 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 360 | |
fb778ea1 | 361 | spin_lock_bh(list_lock); |
7aadf889 ML |
362 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
363 | head, hash_entry) { | |
03fc7f86 | 364 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
c6c8fea2 | 365 | if (orig_node->gw_flags) |
7cf06bc6 SE |
366 | batadv_gw_node_delete(bat_priv, |
367 | orig_node); | |
7aadf889 | 368 | hlist_del_rcu(node); |
7d211efc | 369 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 370 | continue; |
c6c8fea2 SE |
371 | } |
372 | ||
1eda58bf | 373 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
4d5d2db8 | 374 | BATADV_FRAG_TIMEOUT)) |
88ed1e77 | 375 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 376 | } |
fb778ea1 | 377 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
378 | } |
379 | ||
7cf06bc6 SE |
380 | batadv_gw_node_purge(bat_priv); |
381 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
382 | } |
383 | ||
03fc7f86 | 384 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 SE |
385 | { |
386 | struct delayed_work *delayed_work = | |
387 | container_of(work, struct delayed_work, work); | |
388 | struct bat_priv *bat_priv = | |
389 | container_of(delayed_work, struct bat_priv, orig_work); | |
390 | ||
03fc7f86 SE |
391 | _batadv_purge_orig(bat_priv); |
392 | batadv_start_purge_timer(bat_priv); | |
c6c8fea2 SE |
393 | } |
394 | ||
7d211efc | 395 | void batadv_purge_orig_ref(struct bat_priv *bat_priv) |
c6c8fea2 | 396 | { |
03fc7f86 | 397 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
398 | } |
399 | ||
7d211efc | 400 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
401 | { |
402 | struct net_device *net_dev = (struct net_device *)seq->private; | |
403 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
5bf74e9c | 404 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 405 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 406 | struct hlist_head *head; |
32ae9b22 | 407 | struct hard_iface *primary_if; |
c6c8fea2 | 408 | struct orig_node *orig_node; |
e1a5382f | 409 | struct neigh_node *neigh_node, *neigh_node_tmp; |
c6c8fea2 SE |
410 | int batman_count = 0; |
411 | int last_seen_secs; | |
412 | int last_seen_msecs; | |
c90681b8 AQ |
413 | uint32_t i; |
414 | int ret = 0; | |
32ae9b22 | 415 | |
e5d89254 | 416 | primary_if = batadv_primary_if_get_selected(bat_priv); |
c6c8fea2 | 417 | |
32ae9b22 | 418 | if (!primary_if) { |
86ceb360 SE |
419 | ret = seq_printf(seq, |
420 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
421 | net_dev->name); |
422 | goto out; | |
423 | } | |
c6c8fea2 | 424 | |
e9a4f295 | 425 | if (primary_if->if_status != BATADV_IF_ACTIVE) { |
86ceb360 SE |
426 | ret = seq_printf(seq, |
427 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
428 | net_dev->name); |
429 | goto out; | |
c6c8fea2 SE |
430 | } |
431 | ||
44c4349a | 432 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 433 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 434 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 435 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
436 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
437 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 438 | |
c6c8fea2 SE |
439 | for (i = 0; i < hash->size; i++) { |
440 | head = &hash->table[i]; | |
441 | ||
fb778ea1 | 442 | rcu_read_lock(); |
7aadf889 | 443 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
7d211efc | 444 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 445 | if (!neigh_node) |
c6c8fea2 SE |
446 | continue; |
447 | ||
e1a5382f LL |
448 | if (neigh_node->tq_avg == 0) |
449 | goto next; | |
c6c8fea2 SE |
450 | |
451 | last_seen_secs = jiffies_to_msecs(jiffies - | |
d7b2a97e | 452 | orig_node->last_seen) / 1000; |
c6c8fea2 | 453 | last_seen_msecs = jiffies_to_msecs(jiffies - |
d7b2a97e | 454 | orig_node->last_seen) % 1000; |
c6c8fea2 | 455 | |
c6c8fea2 SE |
456 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
457 | orig_node->orig, last_seen_secs, | |
458 | last_seen_msecs, neigh_node->tq_avg, | |
459 | neigh_node->addr, | |
460 | neigh_node->if_incoming->net_dev->name); | |
461 | ||
e1a5382f | 462 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 463 | &orig_node->neigh_list, list) { |
e1a5382f LL |
464 | seq_printf(seq, " %pM (%3i)", |
465 | neigh_node_tmp->addr, | |
466 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
467 | } |
468 | ||
469 | seq_printf(seq, "\n"); | |
470 | batman_count++; | |
e1a5382f LL |
471 | |
472 | next: | |
7d211efc | 473 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 474 | } |
fb778ea1 | 475 | rcu_read_unlock(); |
c6c8fea2 SE |
476 | } |
477 | ||
e1a5382f | 478 | if (batman_count == 0) |
c6c8fea2 SE |
479 | seq_printf(seq, "No batman nodes in range ...\n"); |
480 | ||
32ae9b22 ML |
481 | out: |
482 | if (primary_if) | |
e5d89254 | 483 | batadv_hardif_free_ref(primary_if); |
32ae9b22 | 484 | return ret; |
c6c8fea2 SE |
485 | } |
486 | ||
03fc7f86 | 487 | static int batadv_orig_node_add_if(struct orig_node *orig_node, int max_if_num) |
c6c8fea2 SE |
488 | { |
489 | void *data_ptr; | |
42d0b044 | 490 | size_t data_size, old_size; |
c6c8fea2 | 491 | |
42d0b044 SE |
492 | 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); | |
320f422f | 495 | if (!data_ptr) |
5346c35e | 496 | return -ENOMEM; |
c6c8fea2 | 497 | |
42d0b044 | 498 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
499 | 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); | |
320f422f | 503 | if (!data_ptr) |
5346c35e | 504 | return -ENOMEM; |
c6c8fea2 SE |
505 | |
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 | ||
7d211efc | 514 | int batadv_orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 515 | { |
e6c10f43 | 516 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 517 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 518 | struct hlist_node *node; |
c6c8fea2 | 519 | struct hlist_head *head; |
c6c8fea2 | 520 | struct orig_node *orig_node; |
c90681b8 AQ |
521 | uint32_t i; |
522 | int ret; | |
c6c8fea2 SE |
523 | |
524 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
525 | * if_num |
526 | */ | |
c6c8fea2 SE |
527 | for (i = 0; i < hash->size; i++) { |
528 | head = &hash->table[i]; | |
529 | ||
fb778ea1 | 530 | rcu_read_lock(); |
7aadf889 | 531 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 532 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 533 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
534 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
535 | ||
5346c35e | 536 | if (ret == -ENOMEM) |
c6c8fea2 SE |
537 | goto err; |
538 | } | |
fb778ea1 | 539 | rcu_read_unlock(); |
c6c8fea2 SE |
540 | } |
541 | ||
c6c8fea2 SE |
542 | return 0; |
543 | ||
544 | err: | |
fb778ea1 | 545 | rcu_read_unlock(); |
c6c8fea2 SE |
546 | return -ENOMEM; |
547 | } | |
548 | ||
03fc7f86 SE |
549 | static int batadv_orig_node_del_if(struct orig_node *orig_node, |
550 | int max_if_num, int del_if_num) | |
c6c8fea2 SE |
551 | { |
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 | ||
42d0b044 | 559 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 560 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 561 | if (!data_ptr) |
5346c35e | 562 | return -ENOMEM; |
c6c8fea2 SE |
563 | |
564 | /* copy first part */ | |
565 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
566 | ||
567 | /* copy second part */ | |
38e3c5f0 | 568 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
569 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
570 | (max_if_num - del_if_num) * chunk_size); | |
571 | ||
572 | free_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); | |
320f422f | 580 | if (!data_ptr) |
5346c35e | 581 | return -ENOMEM; |
c6c8fea2 SE |
582 | |
583 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
584 | del_if_num * sizeof(uint8_t)); | |
585 | ||
38e3c5f0 | 586 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
587 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
588 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
589 | ||
590 | free_own_sum: | |
591 | kfree(orig_node->bcast_own_sum); | |
592 | orig_node->bcast_own_sum = data_ptr; | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
7d211efc | 597 | int batadv_orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 598 | { |
e6c10f43 | 599 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 600 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 601 | struct hlist_node *node; |
c6c8fea2 | 602 | struct hlist_head *head; |
e6c10f43 | 603 | struct hard_iface *hard_iface_tmp; |
c6c8fea2 | 604 | struct orig_node *orig_node; |
c90681b8 AQ |
605 | uint32_t i; |
606 | int ret; | |
c6c8fea2 SE |
607 | |
608 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
609 | * if_num |
610 | */ | |
c6c8fea2 SE |
611 | for (i = 0; i < hash->size; i++) { |
612 | head = &hash->table[i]; | |
613 | ||
fb778ea1 | 614 | rcu_read_lock(); |
7aadf889 | 615 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 616 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
617 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
618 | hard_iface->if_num); | |
2ae2daf6 | 619 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 620 | |
5346c35e | 621 | if (ret == -ENOMEM) |
c6c8fea2 SE |
622 | goto err; |
623 | } | |
fb778ea1 | 624 | rcu_read_unlock(); |
c6c8fea2 SE |
625 | } |
626 | ||
627 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
628 | rcu_read_lock(); | |
3193e8fd | 629 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 630 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
631 | continue; |
632 | ||
e6c10f43 | 633 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
634 | continue; |
635 | ||
e6c10f43 | 636 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
637 | continue; |
638 | ||
e6c10f43 ML |
639 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
640 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
641 | } |
642 | rcu_read_unlock(); | |
643 | ||
e6c10f43 | 644 | hard_iface->if_num = -1; |
c6c8fea2 SE |
645 | return 0; |
646 | ||
647 | err: | |
fb778ea1 | 648 | rcu_read_unlock(); |
c6c8fea2 SE |
649 | return -ENOMEM; |
650 | } |