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e19f9759 | 1 | /* Copyright (C) 2009-2014 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; | |
200 | ||
201 | neigh_node = container_of(rcu, struct batadv_neigh_node, rcu); | |
202 | ||
203 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
204 | &neigh_node->ifinfo_list, list) { | |
205 | batadv_neigh_ifinfo_free_ref_now(neigh_ifinfo); | |
206 | } | |
207 | batadv_hardif_free_ref_now(neigh_node->if_incoming); | |
208 | ||
209 | kfree(neigh_node); | |
210 | } | |
211 | ||
212 | /** | |
213 | * batadv_neigh_node_free_ref_now - decrement the neighbors refcounter | |
214 | * and possibly free it (without rcu callback) | |
215 | * @neigh_node: neigh neighbor to free | |
216 | */ | |
217 | static void | |
218 | batadv_neigh_node_free_ref_now(struct batadv_neigh_node *neigh_node) | |
219 | { | |
220 | if (atomic_dec_and_test(&neigh_node->refcount)) | |
221 | batadv_neigh_node_free_rcu(&neigh_node->rcu); | |
222 | } | |
223 | ||
224 | /** | |
225 | * batadv_neigh_node_free_ref - decrement the neighbors refcounter | |
226 | * and possibly free it | |
227 | * @neigh_node: neigh neighbor to free | |
228 | */ | |
56303d34 | 229 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 230 | { |
44524fcd | 231 | if (atomic_dec_and_test(&neigh_node->refcount)) |
89652331 | 232 | call_rcu(&neigh_node->rcu, batadv_neigh_node_free_rcu); |
a4c135c5 SW |
233 | } |
234 | ||
7351a482 SW |
235 | /** |
236 | * batadv_orig_node_get_router - router to the originator depending on iface | |
237 | * @orig_node: the orig node for the router | |
238 | * @if_outgoing: the interface where the payload packet has been received or | |
239 | * the OGM should be sent to | |
240 | * | |
241 | * Returns the neighbor which should be router for this orig_node/iface. | |
242 | * | |
243 | * The object is returned with refcounter increased by 1. | |
244 | */ | |
56303d34 | 245 | struct batadv_neigh_node * |
7351a482 SW |
246 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
247 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 248 | { |
7351a482 SW |
249 | struct batadv_orig_ifinfo *orig_ifinfo; |
250 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
251 | |
252 | rcu_read_lock(); | |
7351a482 SW |
253 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
254 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
255 | continue; | |
256 | ||
257 | router = rcu_dereference(orig_ifinfo->router); | |
258 | break; | |
259 | } | |
e1a5382f LL |
260 | |
261 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
262 | router = NULL; | |
263 | ||
264 | rcu_read_unlock(); | |
265 | return router; | |
266 | } | |
267 | ||
7351a482 SW |
268 | /** |
269 | * batadv_orig_ifinfo_get - find the ifinfo from an orig_node | |
270 | * @orig_node: the orig node to be queried | |
271 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
272 | * | |
273 | * Returns the requested orig_ifinfo or NULL if not found. | |
274 | * | |
275 | * The object is returned with refcounter increased by 1. | |
276 | */ | |
277 | struct batadv_orig_ifinfo * | |
278 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
279 | struct batadv_hard_iface *if_outgoing) | |
280 | { | |
281 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
282 | ||
283 | rcu_read_lock(); | |
284 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
285 | list) { | |
286 | if (tmp->if_outgoing != if_outgoing) | |
287 | continue; | |
288 | ||
289 | if (!atomic_inc_not_zero(&tmp->refcount)) | |
290 | continue; | |
291 | ||
292 | orig_ifinfo = tmp; | |
293 | break; | |
294 | } | |
295 | rcu_read_unlock(); | |
296 | ||
297 | return orig_ifinfo; | |
298 | } | |
299 | ||
300 | /** | |
301 | * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object | |
302 | * @orig_node: the orig node to be queried | |
303 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
304 | * | |
305 | * Returns NULL in case of failure or the orig_ifinfo object for the if_outgoing | |
306 | * interface otherwise. The object is created and added to the list | |
307 | * if it does not exist. | |
308 | * | |
309 | * The object is returned with refcounter increased by 1. | |
310 | */ | |
311 | struct batadv_orig_ifinfo * | |
312 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
313 | struct batadv_hard_iface *if_outgoing) | |
314 | { | |
315 | struct batadv_orig_ifinfo *orig_ifinfo = NULL; | |
316 | unsigned long reset_time; | |
317 | ||
318 | spin_lock_bh(&orig_node->neigh_list_lock); | |
319 | ||
320 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
321 | if (orig_ifinfo) | |
322 | goto out; | |
323 | ||
324 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
325 | if (!orig_ifinfo) | |
326 | goto out; | |
327 | ||
328 | if (if_outgoing != BATADV_IF_DEFAULT && | |
329 | !atomic_inc_not_zero(&if_outgoing->refcount)) { | |
330 | kfree(orig_ifinfo); | |
331 | orig_ifinfo = NULL; | |
332 | goto out; | |
333 | } | |
334 | ||
335 | reset_time = jiffies - 1; | |
336 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
337 | orig_ifinfo->batman_seqno_reset = reset_time; | |
338 | orig_ifinfo->if_outgoing = if_outgoing; | |
339 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
340 | atomic_set(&orig_ifinfo->refcount, 2); | |
341 | hlist_add_head_rcu(&orig_ifinfo->list, | |
342 | &orig_node->ifinfo_list); | |
343 | out: | |
344 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
345 | return orig_ifinfo; | |
346 | } | |
347 | ||
89652331 SW |
348 | /** |
349 | * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node | |
350 | * @neigh_node: the neigh node to be queried | |
351 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
352 | * | |
353 | * The object is returned with refcounter increased by 1. | |
354 | * | |
355 | * Returns the requested neigh_ifinfo or NULL if not found | |
356 | */ | |
357 | struct batadv_neigh_ifinfo * | |
358 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
359 | struct batadv_hard_iface *if_outgoing) | |
360 | { | |
361 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
362 | *tmp_neigh_ifinfo; | |
363 | ||
364 | rcu_read_lock(); | |
365 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
366 | list) { | |
367 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
368 | continue; | |
369 | ||
370 | if (!atomic_inc_not_zero(&tmp_neigh_ifinfo->refcount)) | |
371 | continue; | |
372 | ||
373 | neigh_ifinfo = tmp_neigh_ifinfo; | |
374 | break; | |
375 | } | |
376 | rcu_read_unlock(); | |
377 | ||
378 | return neigh_ifinfo; | |
379 | } | |
380 | ||
381 | /** | |
382 | * batadv_neigh_ifinfo_new - search and possibly create an neigh_ifinfo object | |
383 | * @neigh_node: the neigh node to be queried | |
384 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
385 | * | |
386 | * Returns NULL in case of failure or the neigh_ifinfo object for the | |
387 | * if_outgoing interface otherwise. The object is created and added to the list | |
388 | * if it does not exist. | |
389 | * | |
390 | * The object is returned with refcounter increased by 1. | |
391 | */ | |
392 | struct batadv_neigh_ifinfo * | |
393 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
394 | struct batadv_hard_iface *if_outgoing) | |
395 | { | |
396 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
397 | ||
398 | spin_lock_bh(&neigh->ifinfo_lock); | |
399 | ||
400 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
401 | if (neigh_ifinfo) | |
402 | goto out; | |
403 | ||
404 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
405 | if (!neigh_ifinfo) | |
406 | goto out; | |
407 | ||
408 | if (if_outgoing && !atomic_inc_not_zero(&if_outgoing->refcount)) { | |
409 | kfree(neigh_ifinfo); | |
410 | neigh_ifinfo = NULL; | |
411 | goto out; | |
412 | } | |
413 | ||
414 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
415 | atomic_set(&neigh_ifinfo->refcount, 2); | |
416 | neigh_ifinfo->if_outgoing = if_outgoing; | |
417 | ||
418 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); | |
419 | ||
420 | out: | |
421 | spin_unlock_bh(&neigh->ifinfo_lock); | |
422 | ||
423 | return neigh_ifinfo; | |
424 | } | |
425 | ||
0538f759 AQ |
426 | /** |
427 | * batadv_neigh_node_new - create and init a new neigh_node object | |
428 | * @hard_iface: the interface where the neighbour is connected to | |
429 | * @neigh_addr: the mac address of the neighbour interface | |
430 | * @orig_node: originator object representing the neighbour | |
431 | * | |
432 | * Allocates a new neigh_node object and initialises all the generic fields. | |
433 | * Returns the new object or NULL on failure. | |
434 | */ | |
56303d34 SE |
435 | struct batadv_neigh_node * |
436 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
0538f759 AQ |
437 | const uint8_t *neigh_addr, |
438 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 439 | { |
56303d34 | 440 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 441 | |
704509b8 | 442 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 443 | if (!neigh_node) |
7ae8b285 | 444 | goto out; |
c6c8fea2 | 445 | |
9591a79f | 446 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
447 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
448 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 449 | |
8fdd0153 | 450 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
451 | neigh_node->if_incoming = hard_iface; |
452 | neigh_node->orig_node = orig_node; | |
453 | ||
1605d0d6 ML |
454 | /* extra reference for return */ |
455 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 456 | |
7ae8b285 | 457 | out: |
c6c8fea2 SE |
458 | return neigh_node; |
459 | } | |
460 | ||
08bf0ed2 AQ |
461 | /** |
462 | * batadv_neigh_node_get - retrieve a neighbour from the list | |
463 | * @orig_node: originator which the neighbour belongs to | |
464 | * @hard_iface: the interface where this neighbour is connected to | |
465 | * @addr: the address of the neighbour | |
466 | * | |
467 | * Looks for and possibly returns a neighbour belonging to this originator list | |
468 | * which is connected through the provided hard interface. | |
469 | * Returns NULL if the neighbour is not found. | |
470 | */ | |
471 | struct batadv_neigh_node * | |
472 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
473 | const struct batadv_hard_iface *hard_iface, | |
474 | const uint8_t *addr) | |
475 | { | |
476 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
477 | ||
478 | rcu_read_lock(); | |
479 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
480 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
481 | continue; | |
482 | ||
483 | if (tmp_neigh_node->if_incoming != hard_iface) | |
484 | continue; | |
485 | ||
486 | if (!atomic_inc_not_zero(&tmp_neigh_node->refcount)) | |
487 | continue; | |
488 | ||
489 | res = tmp_neigh_node; | |
490 | break; | |
491 | } | |
492 | rcu_read_unlock(); | |
493 | ||
494 | return res; | |
495 | } | |
496 | ||
7351a482 SW |
497 | /** |
498 | * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object | |
499 | * @rcu: rcu pointer of the orig_ifinfo object | |
500 | */ | |
501 | static void batadv_orig_ifinfo_free_rcu(struct rcu_head *rcu) | |
502 | { | |
503 | struct batadv_orig_ifinfo *orig_ifinfo; | |
000c8dff | 504 | struct batadv_neigh_node *router; |
7351a482 SW |
505 | |
506 | orig_ifinfo = container_of(rcu, struct batadv_orig_ifinfo, rcu); | |
507 | ||
508 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) | |
509 | batadv_hardif_free_ref_now(orig_ifinfo->if_outgoing); | |
510 | ||
000c8dff SW |
511 | /* this is the last reference to this object */ |
512 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
513 | if (router) | |
514 | batadv_neigh_node_free_ref_now(router); | |
7351a482 SW |
515 | kfree(orig_ifinfo); |
516 | } | |
517 | ||
518 | /** | |
519 | * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free | |
520 | * the orig_ifinfo (without rcu callback) | |
521 | * @orig_ifinfo: the orig_ifinfo object to release | |
522 | */ | |
523 | static void | |
524 | batadv_orig_ifinfo_free_ref_now(struct batadv_orig_ifinfo *orig_ifinfo) | |
525 | { | |
526 | if (atomic_dec_and_test(&orig_ifinfo->refcount)) | |
527 | batadv_orig_ifinfo_free_rcu(&orig_ifinfo->rcu); | |
528 | } | |
529 | ||
530 | /** | |
531 | * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free | |
532 | * the orig_ifinfo | |
533 | * @orig_ifinfo: the orig_ifinfo object to release | |
534 | */ | |
535 | void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo) | |
536 | { | |
537 | if (atomic_dec_and_test(&orig_ifinfo->refcount)) | |
538 | call_rcu(&orig_ifinfo->rcu, batadv_orig_ifinfo_free_rcu); | |
539 | } | |
540 | ||
03fc7f86 | 541 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 542 | { |
b67bfe0d | 543 | struct hlist_node *node_tmp; |
f6c8b711 | 544 | struct batadv_neigh_node *neigh_node; |
56303d34 | 545 | struct batadv_orig_node *orig_node; |
7351a482 | 546 | struct batadv_orig_ifinfo *orig_ifinfo; |
16b1aba8 | 547 | |
56303d34 | 548 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 549 | |
f987ed6e ML |
550 | spin_lock_bh(&orig_node->neigh_list_lock); |
551 | ||
c6c8fea2 | 552 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 553 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 554 | &orig_node->neigh_list, list) { |
f987ed6e | 555 | hlist_del_rcu(&neigh_node->list); |
89652331 | 556 | batadv_neigh_node_free_ref_now(neigh_node); |
c6c8fea2 SE |
557 | } |
558 | ||
7351a482 SW |
559 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, |
560 | &orig_node->ifinfo_list, list) { | |
561 | hlist_del_rcu(&orig_ifinfo->list); | |
562 | batadv_orig_ifinfo_free_ref_now(orig_ifinfo); | |
563 | } | |
f987ed6e ML |
564 | spin_unlock_bh(&orig_node->neigh_list_lock); |
565 | ||
60432d75 LL |
566 | batadv_mcast_purge_orig(orig_node); |
567 | ||
d56b1705 MH |
568 | /* Free nc_nodes */ |
569 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
570 | ||
610bfc6b MH |
571 | batadv_frag_purge_orig(orig_node, NULL); |
572 | ||
95fb130d | 573 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, -1, |
08c36d3e | 574 | "originator timed out"); |
c6c8fea2 | 575 | |
d0015fdd AQ |
576 | if (orig_node->bat_priv->bat_algo_ops->bat_orig_free) |
577 | orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node); | |
578 | ||
a73105b8 | 579 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
580 | kfree(orig_node); |
581 | } | |
582 | ||
72822225 LL |
583 | /** |
584 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
585 | * schedule an rcu callback for freeing it | |
586 | * @orig_node: the orig node to free | |
587 | */ | |
56303d34 | 588 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
589 | { |
590 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 591 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
592 | } |
593 | ||
72822225 LL |
594 | /** |
595 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
596 | * possibly free it (without rcu callback) | |
597 | * @orig_node: the orig node to free | |
598 | */ | |
599 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
600 | { | |
601 | if (atomic_dec_and_test(&orig_node->refcount)) | |
602 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
603 | } | |
604 | ||
56303d34 | 605 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 606 | { |
5bf74e9c | 607 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 608 | struct hlist_node *node_tmp; |
16b1aba8 | 609 | struct hlist_head *head; |
16b1aba8 | 610 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 611 | struct batadv_orig_node *orig_node; |
c90681b8 | 612 | uint32_t i; |
16b1aba8 ML |
613 | |
614 | if (!hash) | |
c6c8fea2 SE |
615 | return; |
616 | ||
617 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
618 | ||
c6c8fea2 | 619 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
620 | |
621 | for (i = 0; i < hash->size; i++) { | |
622 | head = &hash->table[i]; | |
623 | list_lock = &hash->list_locks[i]; | |
624 | ||
625 | spin_lock_bh(list_lock); | |
b67bfe0d | 626 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 627 | head, hash_entry) { |
b67bfe0d | 628 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 629 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
630 | } |
631 | spin_unlock_bh(list_lock); | |
632 | } | |
633 | ||
1a8eaf07 | 634 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
635 | } |
636 | ||
bbad0a5e AQ |
637 | /** |
638 | * batadv_orig_node_new - creates a new orig_node | |
639 | * @bat_priv: the bat priv with all the soft interface information | |
640 | * @addr: the mac address of the originator | |
641 | * | |
642 | * Creates a new originator object and initialise all the generic fields. | |
643 | * The new object is not added to the originator list. | |
644 | * Returns the newly created object or NULL on failure. | |
9cfc7bd6 | 645 | */ |
bbad0a5e | 646 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
56303d34 | 647 | const uint8_t *addr) |
c6c8fea2 | 648 | { |
56303d34 | 649 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 650 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 651 | unsigned long reset_time; |
bbad0a5e | 652 | int i; |
c6c8fea2 | 653 | |
39c75a51 SE |
654 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
655 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 656 | |
704509b8 | 657 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
658 | if (!orig_node) |
659 | return NULL; | |
660 | ||
9591a79f | 661 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
7ea7b4a1 | 662 | INIT_LIST_HEAD(&orig_node->vlan_list); |
7351a482 | 663 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 664 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 665 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 666 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 667 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 668 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 669 | |
d56b1705 MH |
670 | batadv_nc_init_orig(orig_node); |
671 | ||
7b36e8ee ML |
672 | /* extra reference for return */ |
673 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 674 | |
16b1aba8 | 675 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 676 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 677 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 678 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 679 | orig_node->tt_buff = NULL; |
a73105b8 | 680 | orig_node->tt_buff_len = 0; |
42d0b044 SE |
681 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
682 | orig_node->bcast_seqno_reset = reset_time; | |
60432d75 LL |
683 | #ifdef CONFIG_BATMAN_ADV_MCAST |
684 | orig_node->mcast_flags = BATADV_NO_FLAGS; | |
685 | #endif | |
c6c8fea2 | 686 | |
7ea7b4a1 AQ |
687 | /* create a vlan object for the "untagged" LAN */ |
688 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
689 | if (!vlan) | |
690 | goto free_orig_node; | |
691 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
692 | * Immediately release vlan since it is not needed anymore in this | |
693 | * context | |
694 | */ | |
695 | batadv_orig_node_vlan_free_ref(vlan); | |
696 | ||
610bfc6b MH |
697 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
698 | INIT_HLIST_HEAD(&orig_node->fragments[i].head); | |
699 | spin_lock_init(&orig_node->fragments[i].lock); | |
700 | orig_node->fragments[i].size = 0; | |
701 | } | |
702 | ||
c6c8fea2 | 703 | return orig_node; |
c6c8fea2 SE |
704 | free_orig_node: |
705 | kfree(orig_node); | |
706 | return NULL; | |
707 | } | |
708 | ||
709de13f SW |
709 | /** |
710 | * batadv_purge_neigh_ifinfo - purge obsolete ifinfo entries from neighbor | |
711 | * @bat_priv: the bat priv with all the soft interface information | |
712 | * @neigh: orig node which is to be checked | |
713 | */ | |
714 | static void | |
715 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
716 | struct batadv_neigh_node *neigh) | |
717 | { | |
718 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
719 | struct batadv_hard_iface *if_outgoing; | |
720 | struct hlist_node *node_tmp; | |
721 | ||
722 | spin_lock_bh(&neigh->ifinfo_lock); | |
723 | ||
724 | /* for all ifinfo objects for this neighinator */ | |
725 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
726 | &neigh->ifinfo_list, list) { | |
727 | if_outgoing = neigh_ifinfo->if_outgoing; | |
728 | ||
729 | /* always keep the default interface */ | |
730 | if (if_outgoing == BATADV_IF_DEFAULT) | |
731 | continue; | |
732 | ||
733 | /* don't purge if the interface is not (going) down */ | |
734 | if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && | |
735 | (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && | |
736 | (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) | |
737 | continue; | |
738 | ||
739 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
740 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
741 | neigh->addr, if_outgoing->net_dev->name); | |
742 | ||
743 | hlist_del_rcu(&neigh_ifinfo->list); | |
744 | batadv_neigh_ifinfo_free_ref(neigh_ifinfo); | |
745 | } | |
746 | ||
747 | spin_unlock_bh(&neigh->ifinfo_lock); | |
748 | } | |
749 | ||
7351a482 SW |
750 | /** |
751 | * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator | |
752 | * @bat_priv: the bat priv with all the soft interface information | |
753 | * @orig_node: orig node which is to be checked | |
754 | * | |
755 | * Returns true if any ifinfo entry was purged, false otherwise. | |
756 | */ | |
757 | static bool | |
758 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
759 | struct batadv_orig_node *orig_node) | |
760 | { | |
761 | struct batadv_orig_ifinfo *orig_ifinfo; | |
762 | struct batadv_hard_iface *if_outgoing; | |
763 | struct hlist_node *node_tmp; | |
764 | bool ifinfo_purged = false; | |
765 | ||
766 | spin_lock_bh(&orig_node->neigh_list_lock); | |
767 | ||
768 | /* for all ifinfo objects for this originator */ | |
769 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
770 | &orig_node->ifinfo_list, list) { | |
771 | if_outgoing = orig_ifinfo->if_outgoing; | |
772 | ||
773 | /* always keep the default interface */ | |
774 | if (if_outgoing == BATADV_IF_DEFAULT) | |
775 | continue; | |
776 | ||
777 | /* don't purge if the interface is not (going) down */ | |
778 | if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && | |
779 | (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && | |
780 | (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) | |
781 | continue; | |
782 | ||
783 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
784 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
785 | orig_node->orig, if_outgoing->net_dev->name); | |
786 | ||
787 | ifinfo_purged = true; | |
788 | ||
789 | hlist_del_rcu(&orig_ifinfo->list); | |
790 | batadv_orig_ifinfo_free_ref(orig_ifinfo); | |
f3b3d901 SW |
791 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
792 | orig_node->last_bonding_candidate = NULL; | |
793 | batadv_orig_ifinfo_free_ref(orig_ifinfo); | |
794 | } | |
7351a482 SW |
795 | } |
796 | ||
797 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
798 | ||
799 | return ifinfo_purged; | |
800 | } | |
801 | ||
802 | ||
89652331 SW |
803 | /** |
804 | * batadv_purge_orig_neighbors - purges neighbors from originator | |
805 | * @bat_priv: the bat priv with all the soft interface information | |
806 | * @orig_node: orig node which is to be checked | |
807 | * | |
808 | * Returns true if any neighbor was purged, false otherwise | |
809 | */ | |
56303d34 SE |
810 | static bool |
811 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 812 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 813 | { |
b67bfe0d | 814 | struct hlist_node *node_tmp; |
56303d34 | 815 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 816 | bool neigh_purged = false; |
0b0094e0 | 817 | unsigned long last_seen; |
56303d34 | 818 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 819 | |
f987ed6e ML |
820 | spin_lock_bh(&orig_node->neigh_list_lock); |
821 | ||
c6c8fea2 | 822 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 823 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 824 | &orig_node->neigh_list, list) { |
1eda58bf SE |
825 | last_seen = neigh_node->last_seen; |
826 | if_incoming = neigh_node->if_incoming; | |
827 | ||
42d0b044 | 828 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
829 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
830 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
831 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
832 | if ((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)) | |
39c75a51 | 835 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
836 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
837 | orig_node->orig, neigh_node->addr, | |
838 | if_incoming->net_dev->name); | |
c6c8fea2 | 839 | else |
39c75a51 | 840 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
841 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
842 | orig_node->orig, neigh_node->addr, | |
843 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
844 | |
845 | neigh_purged = true; | |
9591a79f | 846 | |
f987ed6e | 847 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 848 | batadv_neigh_node_free_ref(neigh_node); |
709de13f SW |
849 | } else { |
850 | /* only necessary if not the whole neighbor is to be | |
851 | * deleted, but some interface has been removed. | |
852 | */ | |
853 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
854 | } |
855 | } | |
f987ed6e ML |
856 | |
857 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
858 | return neigh_purged; |
859 | } | |
860 | ||
89652331 SW |
861 | /** |
862 | * batadv_find_best_neighbor - finds the best neighbor after purging | |
863 | * @bat_priv: the bat priv with all the soft interface information | |
864 | * @orig_node: orig node which is to be checked | |
865 | * @if_outgoing: the interface for which the metric should be compared | |
866 | * | |
867 | * Returns the current best neighbor, with refcount increased. | |
868 | */ | |
869 | static struct batadv_neigh_node * | |
870 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
871 | struct batadv_orig_node *orig_node, | |
872 | struct batadv_hard_iface *if_outgoing) | |
873 | { | |
874 | struct batadv_neigh_node *best = NULL, *neigh; | |
875 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; | |
876 | ||
877 | rcu_read_lock(); | |
878 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
879 | if (best && (bao->bat_neigh_cmp(neigh, if_outgoing, | |
880 | best, if_outgoing) <= 0)) | |
881 | continue; | |
882 | ||
883 | if (!atomic_inc_not_zero(&neigh->refcount)) | |
884 | continue; | |
885 | ||
886 | if (best) | |
887 | batadv_neigh_node_free_ref(best); | |
888 | ||
889 | best = neigh; | |
890 | } | |
891 | rcu_read_unlock(); | |
892 | ||
893 | return best; | |
894 | } | |
895 | ||
7351a482 SW |
896 | /** |
897 | * batadv_purge_orig_node - purges obsolete information from an orig_node | |
898 | * @bat_priv: the bat priv with all the soft interface information | |
899 | * @orig_node: orig node which is to be checked | |
900 | * | |
901 | * This function checks if the orig_node or substructures of it have become | |
902 | * obsolete, and purges this information if that's the case. | |
903 | * | |
904 | * Returns true if the orig_node is to be removed, false otherwise. | |
905 | */ | |
56303d34 SE |
906 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
907 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 908 | { |
56303d34 | 909 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 910 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 911 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 912 | |
42d0b044 SE |
913 | if (batadv_has_timed_out(orig_node->last_seen, |
914 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 915 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
916 | "Originator timeout: originator %pM, last_seen %u\n", |
917 | orig_node->orig, | |
918 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 919 | return true; |
c6c8fea2 | 920 | } |
7b955a9f SW |
921 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
922 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 923 | |
7b955a9f | 924 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
925 | return false; |
926 | ||
7351a482 | 927 | /* first for NULL ... */ |
89652331 SW |
928 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
929 | BATADV_IF_DEFAULT); | |
7351a482 SW |
930 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
931 | best_neigh_node); | |
89652331 SW |
932 | if (best_neigh_node) |
933 | batadv_neigh_node_free_ref(best_neigh_node); | |
c6c8fea2 | 934 | |
7351a482 SW |
935 | /* ... then for all other interfaces. */ |
936 | rcu_read_lock(); | |
937 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
938 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
939 | continue; | |
940 | ||
941 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
942 | continue; | |
943 | ||
944 | best_neigh_node = batadv_find_best_neighbor(bat_priv, | |
945 | orig_node, | |
946 | hard_iface); | |
947 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
948 | best_neigh_node); | |
949 | if (best_neigh_node) | |
950 | batadv_neigh_node_free_ref(best_neigh_node); | |
951 | } | |
952 | rcu_read_unlock(); | |
953 | ||
c6c8fea2 SE |
954 | return false; |
955 | } | |
956 | ||
56303d34 | 957 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 958 | { |
5bf74e9c | 959 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 960 | struct hlist_node *node_tmp; |
c6c8fea2 | 961 | struct hlist_head *head; |
fb778ea1 | 962 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 963 | struct batadv_orig_node *orig_node; |
c90681b8 | 964 | uint32_t i; |
c6c8fea2 SE |
965 | |
966 | if (!hash) | |
967 | return; | |
968 | ||
c6c8fea2 SE |
969 | /* for all origins... */ |
970 | for (i = 0; i < hash->size; i++) { | |
971 | head = &hash->table[i]; | |
fb778ea1 | 972 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 973 | |
fb778ea1 | 974 | spin_lock_bh(list_lock); |
b67bfe0d | 975 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 976 | head, hash_entry) { |
03fc7f86 | 977 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 978 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 979 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 980 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 981 | continue; |
c6c8fea2 | 982 | } |
610bfc6b MH |
983 | |
984 | batadv_frag_purge_orig(orig_node, | |
985 | batadv_frag_check_entry); | |
c6c8fea2 | 986 | } |
fb778ea1 | 987 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
988 | } |
989 | ||
7cf06bc6 SE |
990 | batadv_gw_node_purge(bat_priv); |
991 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
992 | } |
993 | ||
03fc7f86 | 994 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 995 | { |
56303d34 SE |
996 | struct delayed_work *delayed_work; |
997 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 998 | |
56303d34 SE |
999 | delayed_work = container_of(work, struct delayed_work, work); |
1000 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 1001 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
1002 | queue_delayed_work(batadv_event_workqueue, |
1003 | &bat_priv->orig_work, | |
1004 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1005 | } |
1006 | ||
56303d34 | 1007 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 1008 | { |
03fc7f86 | 1009 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
1010 | } |
1011 | ||
7d211efc | 1012 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
1013 | { |
1014 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 1015 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 1016 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 1017 | |
30da63a6 ML |
1018 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
1019 | if (!primary_if) | |
737a2a22 | 1020 | return 0; |
c6c8fea2 | 1021 | |
737a2a22 | 1022 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 1023 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 AQ |
1024 | primary_if->net_dev->dev_addr, net_dev->name, |
1025 | bat_priv->bat_algo_ops->name); | |
c6c8fea2 | 1026 | |
737a2a22 | 1027 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 | 1028 | |
737a2a22 AQ |
1029 | if (!bat_priv->bat_algo_ops->bat_orig_print) { |
1030 | seq_puts(seq, | |
1031 | "No printing function for this routing protocol\n"); | |
1032 | return 0; | |
c6c8fea2 SE |
1033 | } |
1034 | ||
cb1c92ec SW |
1035 | bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, |
1036 | BATADV_IF_DEFAULT); | |
c6c8fea2 | 1037 | |
30da63a6 | 1038 | return 0; |
c6c8fea2 SE |
1039 | } |
1040 | ||
cb1c92ec SW |
1041 | /** |
1042 | * batadv_orig_hardif_seq_print_text - writes originator infos for a specific | |
1043 | * outgoing interface | |
1044 | * @seq: debugfs table seq_file struct | |
1045 | * @offset: not used | |
1046 | * | |
1047 | * Returns 0 | |
1048 | */ | |
1049 | int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) | |
1050 | { | |
1051 | struct net_device *net_dev = (struct net_device *)seq->private; | |
1052 | struct batadv_hard_iface *hard_iface; | |
1053 | struct batadv_priv *bat_priv; | |
1054 | ||
1055 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1056 | ||
1057 | if (!hard_iface || !hard_iface->soft_iface) { | |
1058 | seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
1063 | if (!bat_priv->bat_algo_ops->bat_orig_print) { | |
1064 | seq_puts(seq, | |
1065 | "No printing function for this routing protocol\n"); | |
1066 | goto out; | |
1067 | } | |
1068 | ||
1069 | if (hard_iface->if_status != BATADV_IF_ACTIVE) { | |
1070 | seq_puts(seq, "Interface not active\n"); | |
1071 | goto out; | |
1072 | } | |
1073 | ||
1074 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", | |
1075 | BATADV_SOURCE_VERSION, hard_iface->net_dev->name, | |
1076 | hard_iface->net_dev->dev_addr, | |
1077 | hard_iface->soft_iface->name, bat_priv->bat_algo_ops->name); | |
1078 | ||
1079 | bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface); | |
1080 | ||
1081 | out: | |
16a41423 ML |
1082 | if (hard_iface) |
1083 | batadv_hardif_free_ref(hard_iface); | |
cb1c92ec SW |
1084 | return 0; |
1085 | } | |
1086 | ||
56303d34 SE |
1087 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
1088 | int max_if_num) | |
c6c8fea2 | 1089 | { |
56303d34 | 1090 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
d0015fdd | 1091 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
5bf74e9c | 1092 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1093 | struct hlist_head *head; |
56303d34 | 1094 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
1095 | uint32_t i; |
1096 | int ret; | |
c6c8fea2 SE |
1097 | |
1098 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1099 | * if_num |
1100 | */ | |
c6c8fea2 SE |
1101 | for (i = 0; i < hash->size; i++) { |
1102 | head = &hash->table[i]; | |
1103 | ||
fb778ea1 | 1104 | rcu_read_lock(); |
b67bfe0d | 1105 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
1106 | ret = 0; |
1107 | if (bao->bat_orig_add_if) | |
1108 | ret = bao->bat_orig_add_if(orig_node, | |
1109 | max_if_num); | |
5346c35e | 1110 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1111 | goto err; |
1112 | } | |
fb778ea1 | 1113 | rcu_read_unlock(); |
c6c8fea2 SE |
1114 | } |
1115 | ||
c6c8fea2 SE |
1116 | return 0; |
1117 | ||
1118 | err: | |
fb778ea1 | 1119 | rcu_read_unlock(); |
c6c8fea2 SE |
1120 | return -ENOMEM; |
1121 | } | |
1122 | ||
56303d34 SE |
1123 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
1124 | int max_if_num) | |
c6c8fea2 | 1125 | { |
56303d34 | 1126 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 1127 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1128 | struct hlist_head *head; |
56303d34 SE |
1129 | struct batadv_hard_iface *hard_iface_tmp; |
1130 | struct batadv_orig_node *orig_node; | |
d0015fdd | 1131 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
c90681b8 AQ |
1132 | uint32_t i; |
1133 | int ret; | |
c6c8fea2 SE |
1134 | |
1135 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1136 | * if_num |
1137 | */ | |
c6c8fea2 SE |
1138 | for (i = 0; i < hash->size; i++) { |
1139 | head = &hash->table[i]; | |
1140 | ||
fb778ea1 | 1141 | rcu_read_lock(); |
b67bfe0d | 1142 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
1143 | ret = 0; |
1144 | if (bao->bat_orig_del_if) | |
1145 | ret = bao->bat_orig_del_if(orig_node, | |
1146 | max_if_num, | |
1147 | hard_iface->if_num); | |
5346c35e | 1148 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1149 | goto err; |
1150 | } | |
fb778ea1 | 1151 | rcu_read_unlock(); |
c6c8fea2 SE |
1152 | } |
1153 | ||
1154 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
1155 | rcu_read_lock(); | |
3193e8fd | 1156 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 1157 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
1158 | continue; |
1159 | ||
e6c10f43 | 1160 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
1161 | continue; |
1162 | ||
e6c10f43 | 1163 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
1164 | continue; |
1165 | ||
e6c10f43 ML |
1166 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
1167 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
1168 | } |
1169 | rcu_read_unlock(); | |
1170 | ||
e6c10f43 | 1171 | hard_iface->if_num = -1; |
c6c8fea2 SE |
1172 | return 0; |
1173 | ||
1174 | err: | |
fb778ea1 | 1175 | rcu_read_unlock(); |
c6c8fea2 SE |
1176 | return -ENOMEM; |
1177 | } |