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9f6446c7 | 1 | /* Copyright (C) 2009-2015 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 | |
ebf38fb7 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
16 | */ |
17 | ||
c6c8fea2 | 18 | #include "main.h" |
785ea114 | 19 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
20 | #include "originator.h" |
21 | #include "hash.h" | |
22 | #include "translation-table.h" | |
23 | #include "routing.h" | |
24 | #include "gateway_client.h" | |
25 | #include "hard-interface.h" | |
c6c8fea2 | 26 | #include "soft-interface.h" |
23721387 | 27 | #include "bridge_loop_avoidance.h" |
d56b1705 | 28 | #include "network-coding.h" |
610bfc6b | 29 | #include "fragmentation.h" |
60432d75 | 30 | #include "multicast.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 */ |
bbad0a5e | 38 | 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 | 42 | |
323813ed | 43 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
44 | } |
45 | ||
7ea7b4a1 AQ |
46 | /** |
47 | * batadv_orig_node_vlan_get - get an orig_node_vlan object | |
48 | * @orig_node: the originator serving the VLAN | |
49 | * @vid: the VLAN identifier | |
50 | * | |
51 | * Returns the vlan object identified by vid and belonging to orig_node or NULL | |
52 | * if it does not exist. | |
53 | */ | |
54 | struct batadv_orig_node_vlan * | |
55 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
56 | unsigned short vid) | |
57 | { | |
58 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
59 | ||
60 | rcu_read_lock(); | |
61 | list_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { | |
62 | if (tmp->vid != vid) | |
63 | continue; | |
64 | ||
65 | if (!atomic_inc_not_zero(&tmp->refcount)) | |
66 | continue; | |
67 | ||
68 | vlan = tmp; | |
69 | ||
70 | break; | |
71 | } | |
72 | rcu_read_unlock(); | |
73 | ||
74 | return vlan; | |
75 | } | |
76 | ||
77 | /** | |
78 | * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan | |
79 | * object | |
80 | * @orig_node: the originator serving the VLAN | |
81 | * @vid: the VLAN identifier | |
82 | * | |
83 | * Returns NULL in case of failure or the vlan object identified by vid and | |
84 | * belonging to orig_node otherwise. The object is created and added to the list | |
85 | * if it does not exist. | |
86 | * | |
87 | * The object is returned with refcounter increased by 1. | |
88 | */ | |
89 | struct batadv_orig_node_vlan * | |
90 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
91 | unsigned short vid) | |
92 | { | |
93 | struct batadv_orig_node_vlan *vlan; | |
94 | ||
95 | spin_lock_bh(&orig_node->vlan_list_lock); | |
96 | ||
97 | /* first look if an object for this vid already exists */ | |
98 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
99 | if (vlan) | |
100 | goto out; | |
101 | ||
102 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
103 | if (!vlan) | |
104 | goto out; | |
105 | ||
106 | atomic_set(&vlan->refcount, 2); | |
107 | vlan->vid = vid; | |
108 | ||
109 | list_add_rcu(&vlan->list, &orig_node->vlan_list); | |
110 | ||
111 | out: | |
112 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
113 | ||
114 | return vlan; | |
115 | } | |
116 | ||
117 | /** | |
118 | * batadv_orig_node_vlan_free_ref - decrement the refcounter and possibly free | |
119 | * the originator-vlan object | |
120 | * @orig_vlan: the originator-vlan object to release | |
121 | */ | |
122 | void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan *orig_vlan) | |
123 | { | |
124 | if (atomic_dec_and_test(&orig_vlan->refcount)) | |
125 | kfree_rcu(orig_vlan, rcu); | |
126 | } | |
127 | ||
56303d34 | 128 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
129 | { |
130 | if (bat_priv->orig_hash) | |
5346c35e | 131 | return 0; |
c6c8fea2 | 132 | |
1a8eaf07 | 133 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
134 | |
135 | if (!bat_priv->orig_hash) | |
136 | goto err; | |
137 | ||
dec05074 AQ |
138 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
139 | &batadv_orig_hash_lock_class_key); | |
140 | ||
72414442 AQ |
141 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
142 | queue_delayed_work(batadv_event_workqueue, | |
143 | &bat_priv->orig_work, | |
144 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
145 | ||
5346c35e | 146 | return 0; |
c6c8fea2 SE |
147 | |
148 | err: | |
5346c35e | 149 | return -ENOMEM; |
c6c8fea2 SE |
150 | } |
151 | ||
89652331 SW |
152 | /** |
153 | * batadv_neigh_ifinfo_free_rcu - free the neigh_ifinfo object | |
154 | * @rcu: rcu pointer of the neigh_ifinfo object | |
155 | */ | |
156 | static void batadv_neigh_ifinfo_free_rcu(struct rcu_head *rcu) | |
157 | { | |
158 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
159 | ||
160 | neigh_ifinfo = container_of(rcu, struct batadv_neigh_ifinfo, rcu); | |
161 | ||
162 | if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) | |
163 | batadv_hardif_free_ref_now(neigh_ifinfo->if_outgoing); | |
164 | ||
165 | kfree(neigh_ifinfo); | |
166 | } | |
167 | ||
168 | /** | |
169 | * batadv_neigh_ifinfo_free_now - decrement the refcounter and possibly free | |
170 | * the neigh_ifinfo (without rcu callback) | |
171 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
172 | */ | |
173 | static void | |
174 | batadv_neigh_ifinfo_free_ref_now(struct batadv_neigh_ifinfo *neigh_ifinfo) | |
175 | { | |
176 | if (atomic_dec_and_test(&neigh_ifinfo->refcount)) | |
177 | batadv_neigh_ifinfo_free_rcu(&neigh_ifinfo->rcu); | |
178 | } | |
179 | ||
180 | /** | |
181 | * batadv_neigh_ifinfo_free_ref - decrement the refcounter and possibly free | |
182 | * the neigh_ifinfo | |
183 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
184 | */ | |
185 | void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo) | |
186 | { | |
187 | if (atomic_dec_and_test(&neigh_ifinfo->refcount)) | |
188 | call_rcu(&neigh_ifinfo->rcu, batadv_neigh_ifinfo_free_rcu); | |
189 | } | |
190 | ||
191 | /** | |
192 | * batadv_neigh_node_free_rcu - free the neigh_node | |
193 | * @rcu: rcu pointer of the neigh_node | |
194 | */ | |
195 | static void batadv_neigh_node_free_rcu(struct rcu_head *rcu) | |
196 | { | |
197 | struct hlist_node *node_tmp; | |
198 | struct batadv_neigh_node *neigh_node; | |
199 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
bcef1f3c | 200 | struct batadv_algo_ops *bao; |
89652331 SW |
201 | |
202 | neigh_node = container_of(rcu, struct batadv_neigh_node, rcu); | |
bcef1f3c | 203 | bao = neigh_node->orig_node->bat_priv->bat_algo_ops; |
89652331 SW |
204 | |
205 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
206 | &neigh_node->ifinfo_list, list) { | |
207 | batadv_neigh_ifinfo_free_ref_now(neigh_ifinfo); | |
208 | } | |
bcef1f3c AQ |
209 | |
210 | if (bao->bat_neigh_free) | |
211 | bao->bat_neigh_free(neigh_node); | |
212 | ||
89652331 SW |
213 | batadv_hardif_free_ref_now(neigh_node->if_incoming); |
214 | ||
215 | kfree(neigh_node); | |
216 | } | |
217 | ||
218 | /** | |
219 | * batadv_neigh_node_free_ref_now - decrement the neighbors refcounter | |
220 | * and possibly free it (without rcu callback) | |
221 | * @neigh_node: neigh neighbor to free | |
222 | */ | |
223 | static void | |
224 | batadv_neigh_node_free_ref_now(struct batadv_neigh_node *neigh_node) | |
225 | { | |
226 | if (atomic_dec_and_test(&neigh_node->refcount)) | |
227 | batadv_neigh_node_free_rcu(&neigh_node->rcu); | |
228 | } | |
229 | ||
230 | /** | |
231 | * batadv_neigh_node_free_ref - decrement the neighbors refcounter | |
232 | * and possibly free it | |
233 | * @neigh_node: neigh neighbor to free | |
234 | */ | |
56303d34 | 235 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 236 | { |
44524fcd | 237 | if (atomic_dec_and_test(&neigh_node->refcount)) |
89652331 | 238 | call_rcu(&neigh_node->rcu, batadv_neigh_node_free_rcu); |
a4c135c5 SW |
239 | } |
240 | ||
7351a482 SW |
241 | /** |
242 | * batadv_orig_node_get_router - router to the originator depending on iface | |
243 | * @orig_node: the orig node for the router | |
244 | * @if_outgoing: the interface where the payload packet has been received or | |
245 | * the OGM should be sent to | |
246 | * | |
247 | * Returns the neighbor which should be router for this orig_node/iface. | |
248 | * | |
249 | * The object is returned with refcounter increased by 1. | |
250 | */ | |
56303d34 | 251 | struct batadv_neigh_node * |
7351a482 SW |
252 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
253 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 254 | { |
7351a482 SW |
255 | struct batadv_orig_ifinfo *orig_ifinfo; |
256 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
257 | |
258 | rcu_read_lock(); | |
7351a482 SW |
259 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
260 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
261 | continue; | |
262 | ||
263 | router = rcu_dereference(orig_ifinfo->router); | |
264 | break; | |
265 | } | |
e1a5382f LL |
266 | |
267 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
268 | router = NULL; | |
269 | ||
270 | rcu_read_unlock(); | |
271 | return router; | |
272 | } | |
273 | ||
7351a482 SW |
274 | /** |
275 | * batadv_orig_ifinfo_get - find the ifinfo from an orig_node | |
276 | * @orig_node: the orig node to be queried | |
277 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
278 | * | |
279 | * Returns the requested orig_ifinfo or NULL if not found. | |
280 | * | |
281 | * The object is returned with refcounter increased by 1. | |
282 | */ | |
283 | struct batadv_orig_ifinfo * | |
284 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
285 | struct batadv_hard_iface *if_outgoing) | |
286 | { | |
287 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
288 | ||
289 | rcu_read_lock(); | |
290 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
291 | list) { | |
292 | if (tmp->if_outgoing != if_outgoing) | |
293 | continue; | |
294 | ||
295 | if (!atomic_inc_not_zero(&tmp->refcount)) | |
296 | continue; | |
297 | ||
298 | orig_ifinfo = tmp; | |
299 | break; | |
300 | } | |
301 | rcu_read_unlock(); | |
302 | ||
303 | return orig_ifinfo; | |
304 | } | |
305 | ||
306 | /** | |
307 | * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object | |
308 | * @orig_node: the orig node to be queried | |
309 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
310 | * | |
311 | * Returns NULL in case of failure or the orig_ifinfo object for the if_outgoing | |
312 | * interface otherwise. The object is created and added to the list | |
313 | * if it does not exist. | |
314 | * | |
315 | * The object is returned with refcounter increased by 1. | |
316 | */ | |
317 | struct batadv_orig_ifinfo * | |
318 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
319 | struct batadv_hard_iface *if_outgoing) | |
320 | { | |
321 | struct batadv_orig_ifinfo *orig_ifinfo = NULL; | |
322 | unsigned long reset_time; | |
323 | ||
324 | spin_lock_bh(&orig_node->neigh_list_lock); | |
325 | ||
326 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
327 | if (orig_ifinfo) | |
328 | goto out; | |
329 | ||
330 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
331 | if (!orig_ifinfo) | |
332 | goto out; | |
333 | ||
334 | if (if_outgoing != BATADV_IF_DEFAULT && | |
335 | !atomic_inc_not_zero(&if_outgoing->refcount)) { | |
336 | kfree(orig_ifinfo); | |
337 | orig_ifinfo = NULL; | |
338 | goto out; | |
339 | } | |
340 | ||
341 | reset_time = jiffies - 1; | |
342 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
343 | orig_ifinfo->batman_seqno_reset = reset_time; | |
344 | orig_ifinfo->if_outgoing = if_outgoing; | |
345 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
346 | atomic_set(&orig_ifinfo->refcount, 2); | |
347 | hlist_add_head_rcu(&orig_ifinfo->list, | |
348 | &orig_node->ifinfo_list); | |
349 | out: | |
350 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
351 | return orig_ifinfo; | |
352 | } | |
353 | ||
89652331 SW |
354 | /** |
355 | * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node | |
356 | * @neigh_node: the neigh node to be queried | |
357 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
358 | * | |
359 | * The object is returned with refcounter increased by 1. | |
360 | * | |
361 | * Returns the requested neigh_ifinfo or NULL if not found | |
362 | */ | |
363 | struct batadv_neigh_ifinfo * | |
364 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
365 | struct batadv_hard_iface *if_outgoing) | |
366 | { | |
367 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
368 | *tmp_neigh_ifinfo; | |
369 | ||
370 | rcu_read_lock(); | |
371 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
372 | list) { | |
373 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
374 | continue; | |
375 | ||
376 | if (!atomic_inc_not_zero(&tmp_neigh_ifinfo->refcount)) | |
377 | continue; | |
378 | ||
379 | neigh_ifinfo = tmp_neigh_ifinfo; | |
380 | break; | |
381 | } | |
382 | rcu_read_unlock(); | |
383 | ||
384 | return neigh_ifinfo; | |
385 | } | |
386 | ||
387 | /** | |
388 | * batadv_neigh_ifinfo_new - search and possibly create an neigh_ifinfo object | |
389 | * @neigh_node: the neigh node to be queried | |
390 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
391 | * | |
392 | * Returns NULL in case of failure or the neigh_ifinfo object for the | |
393 | * if_outgoing interface otherwise. The object is created and added to the list | |
394 | * if it does not exist. | |
395 | * | |
396 | * The object is returned with refcounter increased by 1. | |
397 | */ | |
398 | struct batadv_neigh_ifinfo * | |
399 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
400 | struct batadv_hard_iface *if_outgoing) | |
401 | { | |
402 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
403 | ||
404 | spin_lock_bh(&neigh->ifinfo_lock); | |
405 | ||
406 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
407 | if (neigh_ifinfo) | |
408 | goto out; | |
409 | ||
410 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
411 | if (!neigh_ifinfo) | |
412 | goto out; | |
413 | ||
414 | if (if_outgoing && !atomic_inc_not_zero(&if_outgoing->refcount)) { | |
415 | kfree(neigh_ifinfo); | |
416 | neigh_ifinfo = NULL; | |
417 | goto out; | |
418 | } | |
419 | ||
420 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
421 | atomic_set(&neigh_ifinfo->refcount, 2); | |
422 | neigh_ifinfo->if_outgoing = if_outgoing; | |
423 | ||
424 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); | |
425 | ||
426 | out: | |
427 | spin_unlock_bh(&neigh->ifinfo_lock); | |
428 | ||
429 | return neigh_ifinfo; | |
430 | } | |
431 | ||
0538f759 AQ |
432 | /** |
433 | * batadv_neigh_node_new - create and init a new neigh_node object | |
434 | * @hard_iface: the interface where the neighbour is connected to | |
435 | * @neigh_addr: the mac address of the neighbour interface | |
436 | * @orig_node: originator object representing the neighbour | |
437 | * | |
438 | * Allocates a new neigh_node object and initialises all the generic fields. | |
439 | * Returns the new object or NULL on failure. | |
440 | */ | |
56303d34 SE |
441 | struct batadv_neigh_node * |
442 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
0538f759 AQ |
443 | const uint8_t *neigh_addr, |
444 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 445 | { |
56303d34 | 446 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 447 | |
704509b8 | 448 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 449 | if (!neigh_node) |
7ae8b285 | 450 | goto out; |
c6c8fea2 | 451 | |
9591a79f | 452 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
453 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
454 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 455 | |
8fdd0153 | 456 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
457 | neigh_node->if_incoming = hard_iface; |
458 | neigh_node->orig_node = orig_node; | |
459 | ||
1605d0d6 ML |
460 | /* extra reference for return */ |
461 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 462 | |
7ae8b285 | 463 | out: |
c6c8fea2 SE |
464 | return neigh_node; |
465 | } | |
466 | ||
08bf0ed2 AQ |
467 | /** |
468 | * batadv_neigh_node_get - retrieve a neighbour from the list | |
469 | * @orig_node: originator which the neighbour belongs to | |
470 | * @hard_iface: the interface where this neighbour is connected to | |
471 | * @addr: the address of the neighbour | |
472 | * | |
473 | * Looks for and possibly returns a neighbour belonging to this originator list | |
474 | * which is connected through the provided hard interface. | |
475 | * Returns NULL if the neighbour is not found. | |
476 | */ | |
477 | struct batadv_neigh_node * | |
478 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
479 | const struct batadv_hard_iface *hard_iface, | |
480 | const uint8_t *addr) | |
481 | { | |
482 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
483 | ||
484 | rcu_read_lock(); | |
485 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
486 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
487 | continue; | |
488 | ||
489 | if (tmp_neigh_node->if_incoming != hard_iface) | |
490 | continue; | |
491 | ||
492 | if (!atomic_inc_not_zero(&tmp_neigh_node->refcount)) | |
493 | continue; | |
494 | ||
495 | res = tmp_neigh_node; | |
496 | break; | |
497 | } | |
498 | rcu_read_unlock(); | |
499 | ||
500 | return res; | |
501 | } | |
502 | ||
7351a482 SW |
503 | /** |
504 | * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object | |
505 | * @rcu: rcu pointer of the orig_ifinfo object | |
506 | */ | |
507 | static void batadv_orig_ifinfo_free_rcu(struct rcu_head *rcu) | |
508 | { | |
509 | struct batadv_orig_ifinfo *orig_ifinfo; | |
000c8dff | 510 | struct batadv_neigh_node *router; |
7351a482 SW |
511 | |
512 | orig_ifinfo = container_of(rcu, struct batadv_orig_ifinfo, rcu); | |
513 | ||
514 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) | |
515 | batadv_hardif_free_ref_now(orig_ifinfo->if_outgoing); | |
516 | ||
000c8dff SW |
517 | /* this is the last reference to this object */ |
518 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
519 | if (router) | |
520 | batadv_neigh_node_free_ref_now(router); | |
7351a482 SW |
521 | kfree(orig_ifinfo); |
522 | } | |
523 | ||
524 | /** | |
525 | * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free | |
526 | * the orig_ifinfo (without rcu callback) | |
527 | * @orig_ifinfo: the orig_ifinfo object to release | |
528 | */ | |
529 | static void | |
530 | batadv_orig_ifinfo_free_ref_now(struct batadv_orig_ifinfo *orig_ifinfo) | |
531 | { | |
532 | if (atomic_dec_and_test(&orig_ifinfo->refcount)) | |
533 | batadv_orig_ifinfo_free_rcu(&orig_ifinfo->rcu); | |
534 | } | |
535 | ||
536 | /** | |
537 | * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free | |
538 | * the orig_ifinfo | |
539 | * @orig_ifinfo: the orig_ifinfo object to release | |
540 | */ | |
541 | void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo) | |
542 | { | |
543 | if (atomic_dec_and_test(&orig_ifinfo->refcount)) | |
544 | call_rcu(&orig_ifinfo->rcu, batadv_orig_ifinfo_free_rcu); | |
545 | } | |
546 | ||
03fc7f86 | 547 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 548 | { |
b67bfe0d | 549 | struct hlist_node *node_tmp; |
f6c8b711 | 550 | struct batadv_neigh_node *neigh_node; |
56303d34 | 551 | struct batadv_orig_node *orig_node; |
7351a482 | 552 | struct batadv_orig_ifinfo *orig_ifinfo; |
16b1aba8 | 553 | |
56303d34 | 554 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 555 | |
f987ed6e ML |
556 | spin_lock_bh(&orig_node->neigh_list_lock); |
557 | ||
c6c8fea2 | 558 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 559 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 560 | &orig_node->neigh_list, list) { |
f987ed6e | 561 | hlist_del_rcu(&neigh_node->list); |
89652331 | 562 | batadv_neigh_node_free_ref_now(neigh_node); |
c6c8fea2 SE |
563 | } |
564 | ||
7351a482 SW |
565 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, |
566 | &orig_node->ifinfo_list, list) { | |
567 | hlist_del_rcu(&orig_ifinfo->list); | |
568 | batadv_orig_ifinfo_free_ref_now(orig_ifinfo); | |
569 | } | |
f987ed6e ML |
570 | spin_unlock_bh(&orig_node->neigh_list_lock); |
571 | ||
60432d75 LL |
572 | batadv_mcast_purge_orig(orig_node); |
573 | ||
d56b1705 MH |
574 | /* Free nc_nodes */ |
575 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
576 | ||
610bfc6b MH |
577 | batadv_frag_purge_orig(orig_node, NULL); |
578 | ||
d0015fdd AQ |
579 | if (orig_node->bat_priv->bat_algo_ops->bat_orig_free) |
580 | orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node); | |
581 | ||
a73105b8 | 582 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
583 | kfree(orig_node); |
584 | } | |
585 | ||
72822225 LL |
586 | /** |
587 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
588 | * schedule an rcu callback for freeing it | |
589 | * @orig_node: the orig node to free | |
590 | */ | |
56303d34 | 591 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
592 | { |
593 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 594 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
595 | } |
596 | ||
72822225 LL |
597 | /** |
598 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
599 | * possibly free it (without rcu callback) | |
600 | * @orig_node: the orig node to free | |
601 | */ | |
602 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
603 | { | |
604 | if (atomic_dec_and_test(&orig_node->refcount)) | |
605 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
606 | } | |
607 | ||
56303d34 | 608 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 609 | { |
5bf74e9c | 610 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 611 | struct hlist_node *node_tmp; |
16b1aba8 | 612 | struct hlist_head *head; |
16b1aba8 | 613 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 614 | struct batadv_orig_node *orig_node; |
c90681b8 | 615 | uint32_t i; |
16b1aba8 ML |
616 | |
617 | if (!hash) | |
c6c8fea2 SE |
618 | return; |
619 | ||
620 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
621 | ||
c6c8fea2 | 622 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
623 | |
624 | for (i = 0; i < hash->size; i++) { | |
625 | head = &hash->table[i]; | |
626 | list_lock = &hash->list_locks[i]; | |
627 | ||
628 | spin_lock_bh(list_lock); | |
b67bfe0d | 629 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 630 | head, hash_entry) { |
b67bfe0d | 631 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 632 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
633 | } |
634 | spin_unlock_bh(list_lock); | |
635 | } | |
636 | ||
1a8eaf07 | 637 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
638 | } |
639 | ||
bbad0a5e AQ |
640 | /** |
641 | * batadv_orig_node_new - creates a new orig_node | |
642 | * @bat_priv: the bat priv with all the soft interface information | |
643 | * @addr: the mac address of the originator | |
644 | * | |
645 | * Creates a new originator object and initialise all the generic fields. | |
646 | * The new object is not added to the originator list. | |
647 | * Returns the newly created object or NULL on failure. | |
9cfc7bd6 | 648 | */ |
bbad0a5e | 649 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
56303d34 | 650 | const uint8_t *addr) |
c6c8fea2 | 651 | { |
56303d34 | 652 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 653 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 654 | unsigned long reset_time; |
bbad0a5e | 655 | int i; |
c6c8fea2 | 656 | |
39c75a51 SE |
657 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
658 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 659 | |
704509b8 | 660 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
661 | if (!orig_node) |
662 | return NULL; | |
663 | ||
9591a79f | 664 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
7ea7b4a1 | 665 | INIT_LIST_HEAD(&orig_node->vlan_list); |
7351a482 | 666 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 667 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 668 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 669 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 670 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 671 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 672 | |
d56b1705 MH |
673 | batadv_nc_init_orig(orig_node); |
674 | ||
7b36e8ee ML |
675 | /* extra reference for return */ |
676 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 677 | |
16b1aba8 | 678 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 679 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 680 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 681 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 682 | orig_node->tt_buff = NULL; |
a73105b8 | 683 | orig_node->tt_buff_len = 0; |
2c667a33 | 684 | orig_node->last_seen = jiffies; |
42d0b044 SE |
685 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
686 | orig_node->bcast_seqno_reset = reset_time; | |
60432d75 LL |
687 | #ifdef CONFIG_BATMAN_ADV_MCAST |
688 | orig_node->mcast_flags = BATADV_NO_FLAGS; | |
689 | #endif | |
c6c8fea2 | 690 | |
7ea7b4a1 AQ |
691 | /* create a vlan object for the "untagged" LAN */ |
692 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
693 | if (!vlan) | |
694 | goto free_orig_node; | |
695 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
696 | * Immediately release vlan since it is not needed anymore in this | |
697 | * context | |
698 | */ | |
699 | batadv_orig_node_vlan_free_ref(vlan); | |
700 | ||
610bfc6b MH |
701 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
702 | INIT_HLIST_HEAD(&orig_node->fragments[i].head); | |
703 | spin_lock_init(&orig_node->fragments[i].lock); | |
704 | orig_node->fragments[i].size = 0; | |
705 | } | |
706 | ||
c6c8fea2 | 707 | return orig_node; |
c6c8fea2 SE |
708 | free_orig_node: |
709 | kfree(orig_node); | |
710 | return NULL; | |
711 | } | |
712 | ||
709de13f SW |
713 | /** |
714 | * batadv_purge_neigh_ifinfo - purge obsolete ifinfo entries from neighbor | |
715 | * @bat_priv: the bat priv with all the soft interface information | |
716 | * @neigh: orig node which is to be checked | |
717 | */ | |
718 | static void | |
719 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
720 | struct batadv_neigh_node *neigh) | |
721 | { | |
722 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
723 | struct batadv_hard_iface *if_outgoing; | |
724 | struct hlist_node *node_tmp; | |
725 | ||
726 | spin_lock_bh(&neigh->ifinfo_lock); | |
727 | ||
728 | /* for all ifinfo objects for this neighinator */ | |
729 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
730 | &neigh->ifinfo_list, list) { | |
731 | if_outgoing = neigh_ifinfo->if_outgoing; | |
732 | ||
733 | /* always keep the default interface */ | |
734 | if (if_outgoing == BATADV_IF_DEFAULT) | |
735 | continue; | |
736 | ||
737 | /* don't purge if the interface is not (going) down */ | |
738 | if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && | |
739 | (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && | |
740 | (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) | |
741 | continue; | |
742 | ||
743 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
744 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
745 | neigh->addr, if_outgoing->net_dev->name); | |
746 | ||
747 | hlist_del_rcu(&neigh_ifinfo->list); | |
748 | batadv_neigh_ifinfo_free_ref(neigh_ifinfo); | |
749 | } | |
750 | ||
751 | spin_unlock_bh(&neigh->ifinfo_lock); | |
752 | } | |
753 | ||
7351a482 SW |
754 | /** |
755 | * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator | |
756 | * @bat_priv: the bat priv with all the soft interface information | |
757 | * @orig_node: orig node which is to be checked | |
758 | * | |
759 | * Returns true if any ifinfo entry was purged, false otherwise. | |
760 | */ | |
761 | static bool | |
762 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
763 | struct batadv_orig_node *orig_node) | |
764 | { | |
765 | struct batadv_orig_ifinfo *orig_ifinfo; | |
766 | struct batadv_hard_iface *if_outgoing; | |
767 | struct hlist_node *node_tmp; | |
768 | bool ifinfo_purged = false; | |
769 | ||
770 | spin_lock_bh(&orig_node->neigh_list_lock); | |
771 | ||
772 | /* for all ifinfo objects for this originator */ | |
773 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
774 | &orig_node->ifinfo_list, list) { | |
775 | if_outgoing = orig_ifinfo->if_outgoing; | |
776 | ||
777 | /* always keep the default interface */ | |
778 | if (if_outgoing == BATADV_IF_DEFAULT) | |
779 | continue; | |
780 | ||
781 | /* don't purge if the interface is not (going) down */ | |
782 | if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && | |
783 | (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && | |
784 | (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) | |
785 | continue; | |
786 | ||
787 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
788 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
789 | orig_node->orig, if_outgoing->net_dev->name); | |
790 | ||
791 | ifinfo_purged = true; | |
792 | ||
793 | hlist_del_rcu(&orig_ifinfo->list); | |
794 | batadv_orig_ifinfo_free_ref(orig_ifinfo); | |
f3b3d901 SW |
795 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
796 | orig_node->last_bonding_candidate = NULL; | |
797 | batadv_orig_ifinfo_free_ref(orig_ifinfo); | |
798 | } | |
7351a482 SW |
799 | } |
800 | ||
801 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
802 | ||
803 | return ifinfo_purged; | |
804 | } | |
805 | ||
89652331 SW |
806 | /** |
807 | * batadv_purge_orig_neighbors - purges neighbors from originator | |
808 | * @bat_priv: the bat priv with all the soft interface information | |
809 | * @orig_node: orig node which is to be checked | |
810 | * | |
811 | * Returns true if any neighbor was purged, false otherwise | |
812 | */ | |
56303d34 SE |
813 | static bool |
814 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 815 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 816 | { |
b67bfe0d | 817 | struct hlist_node *node_tmp; |
56303d34 | 818 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 819 | bool neigh_purged = false; |
0b0094e0 | 820 | unsigned long last_seen; |
56303d34 | 821 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 822 | |
f987ed6e ML |
823 | spin_lock_bh(&orig_node->neigh_list_lock); |
824 | ||
c6c8fea2 | 825 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 826 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 827 | &orig_node->neigh_list, list) { |
1eda58bf SE |
828 | last_seen = neigh_node->last_seen; |
829 | if_incoming = neigh_node->if_incoming; | |
830 | ||
42d0b044 | 831 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
832 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
833 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
834 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
835 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
836 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
837 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 838 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
839 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
840 | orig_node->orig, neigh_node->addr, | |
841 | if_incoming->net_dev->name); | |
c6c8fea2 | 842 | else |
39c75a51 | 843 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
844 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
845 | orig_node->orig, neigh_node->addr, | |
846 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
847 | |
848 | neigh_purged = true; | |
9591a79f | 849 | |
f987ed6e | 850 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 851 | batadv_neigh_node_free_ref(neigh_node); |
709de13f SW |
852 | } else { |
853 | /* only necessary if not the whole neighbor is to be | |
854 | * deleted, but some interface has been removed. | |
855 | */ | |
856 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
857 | } |
858 | } | |
f987ed6e ML |
859 | |
860 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
861 | return neigh_purged; |
862 | } | |
863 | ||
89652331 SW |
864 | /** |
865 | * batadv_find_best_neighbor - finds the best neighbor after purging | |
866 | * @bat_priv: the bat priv with all the soft interface information | |
867 | * @orig_node: orig node which is to be checked | |
868 | * @if_outgoing: the interface for which the metric should be compared | |
869 | * | |
870 | * Returns the current best neighbor, with refcount increased. | |
871 | */ | |
872 | static struct batadv_neigh_node * | |
873 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
874 | struct batadv_orig_node *orig_node, | |
875 | struct batadv_hard_iface *if_outgoing) | |
876 | { | |
877 | struct batadv_neigh_node *best = NULL, *neigh; | |
878 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; | |
879 | ||
880 | rcu_read_lock(); | |
881 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
882 | if (best && (bao->bat_neigh_cmp(neigh, if_outgoing, | |
883 | best, if_outgoing) <= 0)) | |
884 | continue; | |
885 | ||
886 | if (!atomic_inc_not_zero(&neigh->refcount)) | |
887 | continue; | |
888 | ||
889 | if (best) | |
890 | batadv_neigh_node_free_ref(best); | |
891 | ||
892 | best = neigh; | |
893 | } | |
894 | rcu_read_unlock(); | |
895 | ||
896 | return best; | |
897 | } | |
898 | ||
7351a482 SW |
899 | /** |
900 | * batadv_purge_orig_node - purges obsolete information from an orig_node | |
901 | * @bat_priv: the bat priv with all the soft interface information | |
902 | * @orig_node: orig node which is to be checked | |
903 | * | |
904 | * This function checks if the orig_node or substructures of it have become | |
905 | * obsolete, and purges this information if that's the case. | |
906 | * | |
907 | * Returns true if the orig_node is to be removed, false otherwise. | |
908 | */ | |
56303d34 SE |
909 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
910 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 911 | { |
56303d34 | 912 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 913 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 914 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 915 | |
42d0b044 SE |
916 | if (batadv_has_timed_out(orig_node->last_seen, |
917 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 918 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
919 | "Originator timeout: originator %pM, last_seen %u\n", |
920 | orig_node->orig, | |
921 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 922 | return true; |
c6c8fea2 | 923 | } |
7b955a9f SW |
924 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
925 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 926 | |
7b955a9f | 927 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
928 | return false; |
929 | ||
7351a482 | 930 | /* first for NULL ... */ |
89652331 SW |
931 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
932 | BATADV_IF_DEFAULT); | |
7351a482 SW |
933 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
934 | best_neigh_node); | |
89652331 SW |
935 | if (best_neigh_node) |
936 | batadv_neigh_node_free_ref(best_neigh_node); | |
c6c8fea2 | 937 | |
7351a482 SW |
938 | /* ... then for all other interfaces. */ |
939 | rcu_read_lock(); | |
940 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
941 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
942 | continue; | |
943 | ||
944 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
945 | continue; | |
946 | ||
947 | best_neigh_node = batadv_find_best_neighbor(bat_priv, | |
948 | orig_node, | |
949 | hard_iface); | |
950 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
951 | best_neigh_node); | |
952 | if (best_neigh_node) | |
953 | batadv_neigh_node_free_ref(best_neigh_node); | |
954 | } | |
955 | rcu_read_unlock(); | |
956 | ||
c6c8fea2 SE |
957 | return false; |
958 | } | |
959 | ||
56303d34 | 960 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 961 | { |
5bf74e9c | 962 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 963 | struct hlist_node *node_tmp; |
c6c8fea2 | 964 | struct hlist_head *head; |
fb778ea1 | 965 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 966 | struct batadv_orig_node *orig_node; |
c90681b8 | 967 | uint32_t i; |
c6c8fea2 SE |
968 | |
969 | if (!hash) | |
970 | return; | |
971 | ||
c6c8fea2 SE |
972 | /* for all origins... */ |
973 | for (i = 0; i < hash->size; i++) { | |
974 | head = &hash->table[i]; | |
fb778ea1 | 975 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 976 | |
fb778ea1 | 977 | spin_lock_bh(list_lock); |
b67bfe0d | 978 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 979 | head, hash_entry) { |
03fc7f86 | 980 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 981 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 982 | hlist_del_rcu(&orig_node->hash_entry); |
9d31b3ce LL |
983 | batadv_tt_global_del_orig(orig_node->bat_priv, |
984 | orig_node, -1, | |
985 | "originator timed out"); | |
7d211efc | 986 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 987 | continue; |
c6c8fea2 | 988 | } |
610bfc6b MH |
989 | |
990 | batadv_frag_purge_orig(orig_node, | |
991 | batadv_frag_check_entry); | |
c6c8fea2 | 992 | } |
fb778ea1 | 993 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
994 | } |
995 | ||
7cf06bc6 SE |
996 | batadv_gw_node_purge(bat_priv); |
997 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
998 | } |
999 | ||
03fc7f86 | 1000 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 1001 | { |
56303d34 SE |
1002 | struct delayed_work *delayed_work; |
1003 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 1004 | |
56303d34 SE |
1005 | delayed_work = container_of(work, struct delayed_work, work); |
1006 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 1007 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
1008 | queue_delayed_work(batadv_event_workqueue, |
1009 | &bat_priv->orig_work, | |
1010 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1011 | } |
1012 | ||
56303d34 | 1013 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 1014 | { |
03fc7f86 | 1015 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
1016 | } |
1017 | ||
7d211efc | 1018 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
1019 | { |
1020 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 1021 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 1022 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 1023 | |
30da63a6 ML |
1024 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
1025 | if (!primary_if) | |
737a2a22 | 1026 | return 0; |
c6c8fea2 | 1027 | |
737a2a22 | 1028 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 1029 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 AQ |
1030 | primary_if->net_dev->dev_addr, net_dev->name, |
1031 | bat_priv->bat_algo_ops->name); | |
c6c8fea2 | 1032 | |
737a2a22 | 1033 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 | 1034 | |
737a2a22 AQ |
1035 | if (!bat_priv->bat_algo_ops->bat_orig_print) { |
1036 | seq_puts(seq, | |
1037 | "No printing function for this routing protocol\n"); | |
1038 | return 0; | |
c6c8fea2 SE |
1039 | } |
1040 | ||
cb1c92ec SW |
1041 | bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, |
1042 | BATADV_IF_DEFAULT); | |
c6c8fea2 | 1043 | |
30da63a6 | 1044 | return 0; |
c6c8fea2 SE |
1045 | } |
1046 | ||
cb1c92ec SW |
1047 | /** |
1048 | * batadv_orig_hardif_seq_print_text - writes originator infos for a specific | |
1049 | * outgoing interface | |
1050 | * @seq: debugfs table seq_file struct | |
1051 | * @offset: not used | |
1052 | * | |
1053 | * Returns 0 | |
1054 | */ | |
1055 | int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) | |
1056 | { | |
1057 | struct net_device *net_dev = (struct net_device *)seq->private; | |
1058 | struct batadv_hard_iface *hard_iface; | |
1059 | struct batadv_priv *bat_priv; | |
1060 | ||
1061 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1062 | ||
1063 | if (!hard_iface || !hard_iface->soft_iface) { | |
1064 | seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); | |
1065 | goto out; | |
1066 | } | |
1067 | ||
1068 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
1069 | if (!bat_priv->bat_algo_ops->bat_orig_print) { | |
1070 | seq_puts(seq, | |
1071 | "No printing function for this routing protocol\n"); | |
1072 | goto out; | |
1073 | } | |
1074 | ||
1075 | if (hard_iface->if_status != BATADV_IF_ACTIVE) { | |
1076 | seq_puts(seq, "Interface not active\n"); | |
1077 | goto out; | |
1078 | } | |
1079 | ||
1080 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", | |
1081 | BATADV_SOURCE_VERSION, hard_iface->net_dev->name, | |
1082 | hard_iface->net_dev->dev_addr, | |
1083 | hard_iface->soft_iface->name, bat_priv->bat_algo_ops->name); | |
1084 | ||
1085 | bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface); | |
1086 | ||
1087 | out: | |
16a41423 ML |
1088 | if (hard_iface) |
1089 | batadv_hardif_free_ref(hard_iface); | |
cb1c92ec SW |
1090 | return 0; |
1091 | } | |
1092 | ||
56303d34 SE |
1093 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
1094 | int max_if_num) | |
c6c8fea2 | 1095 | { |
56303d34 | 1096 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
d0015fdd | 1097 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
5bf74e9c | 1098 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1099 | struct hlist_head *head; |
56303d34 | 1100 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
1101 | uint32_t i; |
1102 | int ret; | |
c6c8fea2 SE |
1103 | |
1104 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1105 | * if_num |
1106 | */ | |
c6c8fea2 SE |
1107 | for (i = 0; i < hash->size; i++) { |
1108 | head = &hash->table[i]; | |
1109 | ||
fb778ea1 | 1110 | rcu_read_lock(); |
b67bfe0d | 1111 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
1112 | ret = 0; |
1113 | if (bao->bat_orig_add_if) | |
1114 | ret = bao->bat_orig_add_if(orig_node, | |
1115 | max_if_num); | |
5346c35e | 1116 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1117 | goto err; |
1118 | } | |
fb778ea1 | 1119 | rcu_read_unlock(); |
c6c8fea2 SE |
1120 | } |
1121 | ||
c6c8fea2 SE |
1122 | return 0; |
1123 | ||
1124 | err: | |
fb778ea1 | 1125 | rcu_read_unlock(); |
c6c8fea2 SE |
1126 | return -ENOMEM; |
1127 | } | |
1128 | ||
56303d34 SE |
1129 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
1130 | int max_if_num) | |
c6c8fea2 | 1131 | { |
56303d34 | 1132 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 1133 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1134 | struct hlist_head *head; |
56303d34 SE |
1135 | struct batadv_hard_iface *hard_iface_tmp; |
1136 | struct batadv_orig_node *orig_node; | |
d0015fdd | 1137 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
c90681b8 AQ |
1138 | uint32_t i; |
1139 | int ret; | |
c6c8fea2 SE |
1140 | |
1141 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1142 | * if_num |
1143 | */ | |
c6c8fea2 SE |
1144 | for (i = 0; i < hash->size; i++) { |
1145 | head = &hash->table[i]; | |
1146 | ||
fb778ea1 | 1147 | rcu_read_lock(); |
b67bfe0d | 1148 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
1149 | ret = 0; |
1150 | if (bao->bat_orig_del_if) | |
1151 | ret = bao->bat_orig_del_if(orig_node, | |
1152 | max_if_num, | |
1153 | hard_iface->if_num); | |
5346c35e | 1154 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1155 | goto err; |
1156 | } | |
fb778ea1 | 1157 | rcu_read_unlock(); |
c6c8fea2 SE |
1158 | } |
1159 | ||
1160 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
1161 | rcu_read_lock(); | |
3193e8fd | 1162 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 1163 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
1164 | continue; |
1165 | ||
e6c10f43 | 1166 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
1167 | continue; |
1168 | ||
e6c10f43 | 1169 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
1170 | continue; |
1171 | ||
e6c10f43 ML |
1172 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
1173 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
1174 | } |
1175 | rcu_read_unlock(); | |
1176 | ||
e6c10f43 | 1177 | hard_iface->if_num = -1; |
c6c8fea2 SE |
1178 | return 0; |
1179 | ||
1180 | err: | |
fb778ea1 | 1181 | rcu_read_unlock(); |
c6c8fea2 SE |
1182 | return -ENOMEM; |
1183 | } |