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7db7d9f3 | 1 | // SPDX-License-Identifier: GPL-2.0 |
6b1aea8c | 2 | /* Copyright (C) 2009-2018 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner, Simon Wunderlich | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2 of the GNU General Public | |
8 | * License as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
ebf38fb7 | 16 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
17 | */ |
18 | ||
1e2c2a4f | 19 | #include "originator.h" |
c6c8fea2 | 20 | #include "main.h" |
1e2c2a4f | 21 | |
7c124391 | 22 | #include <linux/atomic.h> |
1e2c2a4f SE |
23 | #include <linux/errno.h> |
24 | #include <linux/etherdevice.h> | |
b92b94ac | 25 | #include <linux/gfp.h> |
1e2c2a4f SE |
26 | #include <linux/jiffies.h> |
27 | #include <linux/kernel.h> | |
90f564df | 28 | #include <linux/kref.h> |
1e2c2a4f SE |
29 | #include <linux/list.h> |
30 | #include <linux/lockdep.h> | |
31 | #include <linux/netdevice.h> | |
85cf8c85 | 32 | #include <linux/netlink.h> |
d0fa4f3f | 33 | #include <linux/rculist.h> |
3326afe6 | 34 | #include <linux/rcupdate.h> |
1e2c2a4f | 35 | #include <linux/seq_file.h> |
85cf8c85 | 36 | #include <linux/skbuff.h> |
1e2c2a4f SE |
37 | #include <linux/slab.h> |
38 | #include <linux/spinlock.h> | |
3326afe6 | 39 | #include <linux/stddef.h> |
1e2c2a4f | 40 | #include <linux/workqueue.h> |
85cf8c85 MS |
41 | #include <net/sock.h> |
42 | #include <uapi/linux/batman_adv.h> | |
1e2c2a4f | 43 | |
01d350d1 | 44 | #include "bat_algo.h" |
785ea114 | 45 | #include "distributed-arp-table.h" |
1e2c2a4f | 46 | #include "fragmentation.h" |
c6c8fea2 SE |
47 | #include "gateway_client.h" |
48 | #include "hard-interface.h" | |
1e2c2a4f | 49 | #include "hash.h" |
ba412080 | 50 | #include "log.h" |
60432d75 | 51 | #include "multicast.h" |
85cf8c85 | 52 | #include "netlink.h" |
1e2c2a4f SE |
53 | #include "network-coding.h" |
54 | #include "routing.h" | |
85cf8c85 | 55 | #include "soft-interface.h" |
1e2c2a4f | 56 | #include "translation-table.h" |
c6c8fea2 | 57 | |
dec05074 AQ |
58 | /* hash class keys */ |
59 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
60 | ||
ff15c27c SE |
61 | /** |
62 | * batadv_orig_hash_find() - Find and return originator from orig_hash | |
63 | * @bat_priv: the bat priv with all the soft interface information | |
64 | * @data: mac address of the originator | |
65 | * | |
66 | * Return: orig_node (with increased refcnt), NULL on errors | |
67 | */ | |
3326afe6 DV |
68 | struct batadv_orig_node * |
69 | batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data) | |
70 | { | |
71 | struct batadv_hashtable *hash = bat_priv->orig_hash; | |
72 | struct hlist_head *head; | |
73 | struct batadv_orig_node *orig_node, *orig_node_tmp = NULL; | |
74 | int index; | |
75 | ||
76 | if (!hash) | |
77 | return NULL; | |
78 | ||
79 | index = batadv_choose_orig(data, hash->size); | |
80 | head = &hash->table[index]; | |
81 | ||
82 | rcu_read_lock(); | |
83 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { | |
84 | if (!batadv_compare_eth(orig_node, data)) | |
85 | continue; | |
86 | ||
87 | if (!kref_get_unless_zero(&orig_node->refcount)) | |
88 | continue; | |
89 | ||
90 | orig_node_tmp = orig_node; | |
91 | break; | |
92 | } | |
93 | rcu_read_unlock(); | |
94 | ||
95 | return orig_node_tmp; | |
96 | } | |
97 | ||
03fc7f86 | 98 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 99 | |
62fe710f | 100 | /** |
7e9a8c2c | 101 | * batadv_compare_orig() - comparing function used in the originator hash table |
7afcbbef SE |
102 | * @node: node in the local table |
103 | * @data2: second object to compare the node to | |
62fe710f | 104 | * |
4b426b10 | 105 | * Return: true if they are the same originator |
62fe710f | 106 | */ |
4b426b10 | 107 | bool batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 108 | { |
56303d34 SE |
109 | const void *data1 = container_of(node, struct batadv_orig_node, |
110 | hash_entry); | |
b8e2dd13 | 111 | |
323813ed | 112 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
113 | } |
114 | ||
7ea7b4a1 | 115 | /** |
7e9a8c2c | 116 | * batadv_orig_node_vlan_get() - get an orig_node_vlan object |
7ea7b4a1 AQ |
117 | * @orig_node: the originator serving the VLAN |
118 | * @vid: the VLAN identifier | |
119 | * | |
62fe710f | 120 | * Return: the vlan object identified by vid and belonging to orig_node or NULL |
7ea7b4a1 AQ |
121 | * if it does not exist. |
122 | */ | |
123 | struct batadv_orig_node_vlan * | |
124 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
125 | unsigned short vid) | |
126 | { | |
127 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
128 | ||
129 | rcu_read_lock(); | |
d0fa4f3f | 130 | hlist_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { |
7ea7b4a1 AQ |
131 | if (tmp->vid != vid) |
132 | continue; | |
133 | ||
161a3be9 | 134 | if (!kref_get_unless_zero(&tmp->refcount)) |
7ea7b4a1 AQ |
135 | continue; |
136 | ||
137 | vlan = tmp; | |
138 | ||
139 | break; | |
140 | } | |
141 | rcu_read_unlock(); | |
142 | ||
143 | return vlan; | |
144 | } | |
145 | ||
146 | /** | |
7e9a8c2c | 147 | * batadv_orig_node_vlan_new() - search and possibly create an orig_node_vlan |
7ea7b4a1 AQ |
148 | * object |
149 | * @orig_node: the originator serving the VLAN | |
150 | * @vid: the VLAN identifier | |
151 | * | |
62fe710f | 152 | * Return: NULL in case of failure or the vlan object identified by vid and |
7ea7b4a1 AQ |
153 | * belonging to orig_node otherwise. The object is created and added to the list |
154 | * if it does not exist. | |
155 | * | |
156 | * The object is returned with refcounter increased by 1. | |
157 | */ | |
158 | struct batadv_orig_node_vlan * | |
159 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
160 | unsigned short vid) | |
161 | { | |
162 | struct batadv_orig_node_vlan *vlan; | |
163 | ||
164 | spin_lock_bh(&orig_node->vlan_list_lock); | |
165 | ||
166 | /* first look if an object for this vid already exists */ | |
167 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
168 | if (vlan) | |
169 | goto out; | |
170 | ||
171 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
172 | if (!vlan) | |
173 | goto out; | |
174 | ||
161a3be9 | 175 | kref_init(&vlan->refcount); |
7ea7b4a1 AQ |
176 | vlan->vid = vid; |
177 | ||
09537d18 | 178 | kref_get(&vlan->refcount); |
d0fa4f3f | 179 | hlist_add_head_rcu(&vlan->list, &orig_node->vlan_list); |
7ea7b4a1 AQ |
180 | |
181 | out: | |
182 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
183 | ||
184 | return vlan; | |
185 | } | |
186 | ||
187 | /** | |
7e9a8c2c | 188 | * batadv_orig_node_vlan_release() - release originator-vlan object from lists |
161a3be9 SE |
189 | * and queue for free after rcu grace period |
190 | * @ref: kref pointer of the originator-vlan object | |
191 | */ | |
192 | static void batadv_orig_node_vlan_release(struct kref *ref) | |
193 | { | |
194 | struct batadv_orig_node_vlan *orig_vlan; | |
195 | ||
196 | orig_vlan = container_of(ref, struct batadv_orig_node_vlan, refcount); | |
197 | ||
198 | kfree_rcu(orig_vlan, rcu); | |
199 | } | |
200 | ||
201 | /** | |
7e9a8c2c | 202 | * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release |
21754e25 | 203 | * the originator-vlan object |
7ea7b4a1 AQ |
204 | * @orig_vlan: the originator-vlan object to release |
205 | */ | |
21754e25 | 206 | void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) |
7ea7b4a1 | 207 | { |
161a3be9 | 208 | kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); |
7ea7b4a1 AQ |
209 | } |
210 | ||
ff15c27c SE |
211 | /** |
212 | * batadv_originator_init() - Initialize all originator structures | |
213 | * @bat_priv: the bat priv with all the soft interface information | |
214 | * | |
215 | * Return: 0 on success or negative error number in case of failure | |
216 | */ | |
56303d34 | 217 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
218 | { |
219 | if (bat_priv->orig_hash) | |
5346c35e | 220 | return 0; |
c6c8fea2 | 221 | |
1a8eaf07 | 222 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
223 | |
224 | if (!bat_priv->orig_hash) | |
225 | goto err; | |
226 | ||
dec05074 AQ |
227 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
228 | &batadv_orig_hash_lock_class_key); | |
229 | ||
72414442 AQ |
230 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
231 | queue_delayed_work(batadv_event_workqueue, | |
232 | &bat_priv->orig_work, | |
233 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
234 | ||
5346c35e | 235 | return 0; |
c6c8fea2 SE |
236 | |
237 | err: | |
5346c35e | 238 | return -ENOMEM; |
c6c8fea2 SE |
239 | } |
240 | ||
89652331 | 241 | /** |
7e9a8c2c | 242 | * batadv_neigh_ifinfo_release() - release neigh_ifinfo from lists and queue for |
ae3e1e36 | 243 | * free after rcu grace period |
962c6832 | 244 | * @ref: kref pointer of the neigh_ifinfo |
89652331 | 245 | */ |
962c6832 | 246 | static void batadv_neigh_ifinfo_release(struct kref *ref) |
89652331 | 247 | { |
962c6832 SE |
248 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
249 | ||
250 | neigh_ifinfo = container_of(ref, struct batadv_neigh_ifinfo, refcount); | |
251 | ||
ae3e1e36 | 252 | if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 253 | batadv_hardif_put(neigh_ifinfo->if_outgoing); |
ae3e1e36 SE |
254 | |
255 | kfree_rcu(neigh_ifinfo, rcu); | |
89652331 SW |
256 | } |
257 | ||
258 | /** | |
7e9a8c2c | 259 | * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release |
89652331 SW |
260 | * the neigh_ifinfo |
261 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
262 | */ | |
044fa3ae | 263 | void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) |
89652331 | 264 | { |
962c6832 | 265 | kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); |
89652331 SW |
266 | } |
267 | ||
cef63419 | 268 | /** |
7e9a8c2c | 269 | * batadv_hardif_neigh_release() - release hardif neigh node from lists and |
f6389692 | 270 | * queue for free after rcu grace period |
90f564df | 271 | * @ref: kref pointer of the neigh_node |
cef63419 | 272 | */ |
90f564df | 273 | static void batadv_hardif_neigh_release(struct kref *ref) |
cef63419 | 274 | { |
90f564df SE |
275 | struct batadv_hardif_neigh_node *hardif_neigh; |
276 | ||
277 | hardif_neigh = container_of(ref, struct batadv_hardif_neigh_node, | |
278 | refcount); | |
279 | ||
f6389692 SE |
280 | spin_lock_bh(&hardif_neigh->if_incoming->neigh_list_lock); |
281 | hlist_del_init_rcu(&hardif_neigh->list); | |
282 | spin_unlock_bh(&hardif_neigh->if_incoming->neigh_list_lock); | |
bab7c6c3 | 283 | |
82047ad7 | 284 | batadv_hardif_put(hardif_neigh->if_incoming); |
f6389692 | 285 | kfree_rcu(hardif_neigh, rcu); |
cef63419 ML |
286 | } |
287 | ||
288 | /** | |
7e9a8c2c | 289 | * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter |
f6389692 | 290 | * and possibly release it |
cef63419 ML |
291 | * @hardif_neigh: hardif neigh neighbor to free |
292 | */ | |
accadc35 | 293 | void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) |
cef63419 | 294 | { |
90f564df | 295 | kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); |
cef63419 ML |
296 | } |
297 | ||
89652331 | 298 | /** |
7e9a8c2c | 299 | * batadv_neigh_node_release() - release neigh_node from lists and queue for |
b4d922cf | 300 | * free after rcu grace period |
77ae32e8 | 301 | * @ref: kref pointer of the neigh_node |
89652331 | 302 | */ |
77ae32e8 | 303 | static void batadv_neigh_node_release(struct kref *ref) |
89652331 SW |
304 | { |
305 | struct hlist_node *node_tmp; | |
77ae32e8 | 306 | struct batadv_neigh_node *neigh_node; |
89652331 SW |
307 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
308 | ||
77ae32e8 | 309 | neigh_node = container_of(ref, struct batadv_neigh_node, refcount); |
89652331 SW |
310 | |
311 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
312 | &neigh_node->ifinfo_list, list) { | |
044fa3ae | 313 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
89652331 | 314 | } |
bcef1f3c | 315 | |
abe59c65 | 316 | batadv_hardif_neigh_put(neigh_node->hardif_neigh); |
cef63419 | 317 | |
82047ad7 | 318 | batadv_hardif_put(neigh_node->if_incoming); |
89652331 | 319 | |
b4d922cf | 320 | kfree_rcu(neigh_node, rcu); |
89652331 SW |
321 | } |
322 | ||
89652331 | 323 | /** |
7e9a8c2c | 324 | * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly |
77ae32e8 | 325 | * release it |
89652331 SW |
326 | * @neigh_node: neigh neighbor to free |
327 | */ | |
25bb2509 | 328 | void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 329 | { |
77ae32e8 | 330 | kref_put(&neigh_node->refcount, batadv_neigh_node_release); |
a4c135c5 SW |
331 | } |
332 | ||
7351a482 | 333 | /** |
7e9a8c2c | 334 | * batadv_orig_router_get() - router to the originator depending on iface |
7351a482 SW |
335 | * @orig_node: the orig node for the router |
336 | * @if_outgoing: the interface where the payload packet has been received or | |
337 | * the OGM should be sent to | |
338 | * | |
62fe710f | 339 | * Return: the neighbor which should be router for this orig_node/iface. |
7351a482 SW |
340 | * |
341 | * The object is returned with refcounter increased by 1. | |
342 | */ | |
56303d34 | 343 | struct batadv_neigh_node * |
7351a482 SW |
344 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
345 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 346 | { |
7351a482 SW |
347 | struct batadv_orig_ifinfo *orig_ifinfo; |
348 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
349 | |
350 | rcu_read_lock(); | |
7351a482 SW |
351 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
352 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
353 | continue; | |
354 | ||
355 | router = rcu_dereference(orig_ifinfo->router); | |
356 | break; | |
357 | } | |
e1a5382f | 358 | |
77ae32e8 | 359 | if (router && !kref_get_unless_zero(&router->refcount)) |
e1a5382f LL |
360 | router = NULL; |
361 | ||
362 | rcu_read_unlock(); | |
363 | return router; | |
364 | } | |
365 | ||
7351a482 | 366 | /** |
7e9a8c2c | 367 | * batadv_orig_ifinfo_get() - find the ifinfo from an orig_node |
7351a482 SW |
368 | * @orig_node: the orig node to be queried |
369 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
370 | * | |
62fe710f | 371 | * Return: the requested orig_ifinfo or NULL if not found. |
7351a482 SW |
372 | * |
373 | * The object is returned with refcounter increased by 1. | |
374 | */ | |
375 | struct batadv_orig_ifinfo * | |
376 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
377 | struct batadv_hard_iface *if_outgoing) | |
378 | { | |
379 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
380 | ||
381 | rcu_read_lock(); | |
382 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
383 | list) { | |
384 | if (tmp->if_outgoing != if_outgoing) | |
385 | continue; | |
386 | ||
a6ba0d34 | 387 | if (!kref_get_unless_zero(&tmp->refcount)) |
7351a482 SW |
388 | continue; |
389 | ||
390 | orig_ifinfo = tmp; | |
391 | break; | |
392 | } | |
393 | rcu_read_unlock(); | |
394 | ||
395 | return orig_ifinfo; | |
396 | } | |
397 | ||
398 | /** | |
7e9a8c2c | 399 | * batadv_orig_ifinfo_new() - search and possibly create an orig_ifinfo object |
7351a482 SW |
400 | * @orig_node: the orig node to be queried |
401 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
402 | * | |
62fe710f | 403 | * Return: NULL in case of failure or the orig_ifinfo object for the if_outgoing |
7351a482 SW |
404 | * interface otherwise. The object is created and added to the list |
405 | * if it does not exist. | |
406 | * | |
407 | * The object is returned with refcounter increased by 1. | |
408 | */ | |
409 | struct batadv_orig_ifinfo * | |
410 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
411 | struct batadv_hard_iface *if_outgoing) | |
412 | { | |
422d2f77 | 413 | struct batadv_orig_ifinfo *orig_ifinfo; |
7351a482 SW |
414 | unsigned long reset_time; |
415 | ||
416 | spin_lock_bh(&orig_node->neigh_list_lock); | |
417 | ||
418 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
419 | if (orig_ifinfo) | |
420 | goto out; | |
421 | ||
422 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
423 | if (!orig_ifinfo) | |
424 | goto out; | |
425 | ||
17a86915 SE |
426 | if (if_outgoing != BATADV_IF_DEFAULT) |
427 | kref_get(&if_outgoing->refcount); | |
7351a482 SW |
428 | |
429 | reset_time = jiffies - 1; | |
430 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
431 | orig_ifinfo->batman_seqno_reset = reset_time; | |
432 | orig_ifinfo->if_outgoing = if_outgoing; | |
433 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
a6ba0d34 | 434 | kref_init(&orig_ifinfo->refcount); |
f257b99b | 435 | |
a6ba0d34 | 436 | kref_get(&orig_ifinfo->refcount); |
7351a482 SW |
437 | hlist_add_head_rcu(&orig_ifinfo->list, |
438 | &orig_node->ifinfo_list); | |
439 | out: | |
440 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
441 | return orig_ifinfo; | |
442 | } | |
443 | ||
89652331 | 444 | /** |
7e9a8c2c | 445 | * batadv_neigh_ifinfo_get() - find the ifinfo from an neigh_node |
e51f0397 | 446 | * @neigh: the neigh node to be queried |
89652331 SW |
447 | * @if_outgoing: the interface for which the ifinfo should be acquired |
448 | * | |
449 | * The object is returned with refcounter increased by 1. | |
450 | * | |
62fe710f | 451 | * Return: the requested neigh_ifinfo or NULL if not found |
89652331 SW |
452 | */ |
453 | struct batadv_neigh_ifinfo * | |
454 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
455 | struct batadv_hard_iface *if_outgoing) | |
456 | { | |
457 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
458 | *tmp_neigh_ifinfo; | |
459 | ||
460 | rcu_read_lock(); | |
461 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
462 | list) { | |
463 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
464 | continue; | |
465 | ||
962c6832 | 466 | if (!kref_get_unless_zero(&tmp_neigh_ifinfo->refcount)) |
89652331 SW |
467 | continue; |
468 | ||
469 | neigh_ifinfo = tmp_neigh_ifinfo; | |
470 | break; | |
471 | } | |
472 | rcu_read_unlock(); | |
473 | ||
474 | return neigh_ifinfo; | |
475 | } | |
476 | ||
477 | /** | |
7e9a8c2c | 478 | * batadv_neigh_ifinfo_new() - search and possibly create an neigh_ifinfo object |
e51f0397 | 479 | * @neigh: the neigh node to be queried |
89652331 SW |
480 | * @if_outgoing: the interface for which the ifinfo should be acquired |
481 | * | |
62fe710f | 482 | * Return: NULL in case of failure or the neigh_ifinfo object for the |
89652331 SW |
483 | * if_outgoing interface otherwise. The object is created and added to the list |
484 | * if it does not exist. | |
485 | * | |
486 | * The object is returned with refcounter increased by 1. | |
487 | */ | |
488 | struct batadv_neigh_ifinfo * | |
489 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
490 | struct batadv_hard_iface *if_outgoing) | |
491 | { | |
492 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
493 | ||
494 | spin_lock_bh(&neigh->ifinfo_lock); | |
495 | ||
496 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
497 | if (neigh_ifinfo) | |
498 | goto out; | |
499 | ||
500 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
501 | if (!neigh_ifinfo) | |
502 | goto out; | |
503 | ||
17a86915 SE |
504 | if (if_outgoing) |
505 | kref_get(&if_outgoing->refcount); | |
89652331 SW |
506 | |
507 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
962c6832 | 508 | kref_init(&neigh_ifinfo->refcount); |
89652331 SW |
509 | neigh_ifinfo->if_outgoing = if_outgoing; |
510 | ||
2e774ac2 | 511 | kref_get(&neigh_ifinfo->refcount); |
89652331 SW |
512 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); |
513 | ||
514 | out: | |
515 | spin_unlock_bh(&neigh->ifinfo_lock); | |
516 | ||
517 | return neigh_ifinfo; | |
518 | } | |
519 | ||
ed292663 | 520 | /** |
7e9a8c2c | 521 | * batadv_neigh_node_get() - retrieve a neighbour from the list |
ed292663 ML |
522 | * @orig_node: originator which the neighbour belongs to |
523 | * @hard_iface: the interface where this neighbour is connected to | |
524 | * @addr: the address of the neighbour | |
525 | * | |
526 | * Looks for and possibly returns a neighbour belonging to this originator list | |
527 | * which is connected through the provided hard interface. | |
62fe710f SE |
528 | * |
529 | * Return: neighbor when found. Othwerwise NULL | |
ed292663 ML |
530 | */ |
531 | static struct batadv_neigh_node * | |
532 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
533 | const struct batadv_hard_iface *hard_iface, | |
534 | const u8 *addr) | |
535 | { | |
536 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
537 | ||
538 | rcu_read_lock(); | |
539 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
540 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
541 | continue; | |
542 | ||
543 | if (tmp_neigh_node->if_incoming != hard_iface) | |
544 | continue; | |
545 | ||
77ae32e8 | 546 | if (!kref_get_unless_zero(&tmp_neigh_node->refcount)) |
ed292663 ML |
547 | continue; |
548 | ||
549 | res = tmp_neigh_node; | |
550 | break; | |
551 | } | |
552 | rcu_read_unlock(); | |
553 | ||
554 | return res; | |
555 | } | |
556 | ||
cef63419 | 557 | /** |
7e9a8c2c | 558 | * batadv_hardif_neigh_create() - create a hardif neighbour node |
cef63419 ML |
559 | * @hard_iface: the interface this neighbour is connected to |
560 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 561 | * @orig_node: originator object representing the neighbour |
cef63419 | 562 | * |
62fe710f | 563 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
564 | */ |
565 | static struct batadv_hardif_neigh_node * | |
566 | batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
567 | const u8 *neigh_addr, |
568 | struct batadv_orig_node *orig_node) | |
cef63419 | 569 | { |
8248a4c7 | 570 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
422d2f77 | 571 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
572 | |
573 | spin_lock_bh(&hard_iface->neigh_list_lock); | |
574 | ||
575 | /* check if neighbor hasn't been added in the meantime */ | |
576 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
577 | if (hardif_neigh) | |
578 | goto out; | |
579 | ||
cef63419 | 580 | hardif_neigh = kzalloc(sizeof(*hardif_neigh), GFP_ATOMIC); |
17a86915 | 581 | if (!hardif_neigh) |
cef63419 | 582 | goto out; |
cef63419 | 583 | |
17a86915 | 584 | kref_get(&hard_iface->refcount); |
cef63419 ML |
585 | INIT_HLIST_NODE(&hardif_neigh->list); |
586 | ether_addr_copy(hardif_neigh->addr, neigh_addr); | |
3111beed | 587 | ether_addr_copy(hardif_neigh->orig, orig_node->orig); |
cef63419 ML |
588 | hardif_neigh->if_incoming = hard_iface; |
589 | hardif_neigh->last_seen = jiffies; | |
590 | ||
90f564df | 591 | kref_init(&hardif_neigh->refcount); |
cef63419 | 592 | |
29824a55 AQ |
593 | if (bat_priv->algo_ops->neigh.hardif_init) |
594 | bat_priv->algo_ops->neigh.hardif_init(hardif_neigh); | |
8248a4c7 | 595 | |
9ca488dd | 596 | hlist_add_head_rcu(&hardif_neigh->list, &hard_iface->neigh_list); |
cef63419 ML |
597 | |
598 | out: | |
599 | spin_unlock_bh(&hard_iface->neigh_list_lock); | |
600 | return hardif_neigh; | |
601 | } | |
602 | ||
603 | /** | |
7e9a8c2c | 604 | * batadv_hardif_neigh_get_or_create() - retrieve or create a hardif neighbour |
cef63419 ML |
605 | * node |
606 | * @hard_iface: the interface this neighbour is connected to | |
607 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 608 | * @orig_node: originator object representing the neighbour |
cef63419 | 609 | * |
62fe710f | 610 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
611 | */ |
612 | static struct batadv_hardif_neigh_node * | |
613 | batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
614 | const u8 *neigh_addr, |
615 | struct batadv_orig_node *orig_node) | |
cef63419 | 616 | { |
422d2f77 | 617 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
618 | |
619 | /* first check without locking to avoid the overhead */ | |
620 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
621 | if (hardif_neigh) | |
622 | return hardif_neigh; | |
623 | ||
3111beed | 624 | return batadv_hardif_neigh_create(hard_iface, neigh_addr, orig_node); |
cef63419 ML |
625 | } |
626 | ||
627 | /** | |
7e9a8c2c | 628 | * batadv_hardif_neigh_get() - retrieve a hardif neighbour from the list |
cef63419 ML |
629 | * @hard_iface: the interface where this neighbour is connected to |
630 | * @neigh_addr: the address of the neighbour | |
631 | * | |
632 | * Looks for and possibly returns a neighbour belonging to this hard interface. | |
62fe710f SE |
633 | * |
634 | * Return: neighbor when found. Othwerwise NULL | |
cef63419 ML |
635 | */ |
636 | struct batadv_hardif_neigh_node * | |
637 | batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, | |
638 | const u8 *neigh_addr) | |
639 | { | |
640 | struct batadv_hardif_neigh_node *tmp_hardif_neigh, *hardif_neigh = NULL; | |
641 | ||
642 | rcu_read_lock(); | |
643 | hlist_for_each_entry_rcu(tmp_hardif_neigh, | |
644 | &hard_iface->neigh_list, list) { | |
645 | if (!batadv_compare_eth(tmp_hardif_neigh->addr, neigh_addr)) | |
646 | continue; | |
647 | ||
90f564df | 648 | if (!kref_get_unless_zero(&tmp_hardif_neigh->refcount)) |
cef63419 ML |
649 | continue; |
650 | ||
651 | hardif_neigh = tmp_hardif_neigh; | |
652 | break; | |
653 | } | |
654 | rcu_read_unlock(); | |
655 | ||
656 | return hardif_neigh; | |
657 | } | |
658 | ||
0538f759 | 659 | /** |
7e9a8c2c | 660 | * batadv_neigh_node_create() - create a neigh node object |
3f32f8a6 | 661 | * @orig_node: originator object representing the neighbour |
0538f759 AQ |
662 | * @hard_iface: the interface where the neighbour is connected to |
663 | * @neigh_addr: the mac address of the neighbour interface | |
0538f759 AQ |
664 | * |
665 | * Allocates a new neigh_node object and initialises all the generic fields. | |
62fe710f | 666 | * |
6f0a6b5e | 667 | * Return: the neighbour node if found or created or NULL otherwise. |
0538f759 | 668 | */ |
6f0a6b5e ML |
669 | static struct batadv_neigh_node * |
670 | batadv_neigh_node_create(struct batadv_orig_node *orig_node, | |
671 | struct batadv_hard_iface *hard_iface, | |
672 | const u8 *neigh_addr) | |
c6c8fea2 | 673 | { |
56303d34 | 674 | struct batadv_neigh_node *neigh_node; |
cef63419 | 675 | struct batadv_hardif_neigh_node *hardif_neigh = NULL; |
c6c8fea2 | 676 | |
e123705e LL |
677 | spin_lock_bh(&orig_node->neigh_list_lock); |
678 | ||
741aa06b ML |
679 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); |
680 | if (neigh_node) | |
681 | goto out; | |
682 | ||
cef63419 | 683 | hardif_neigh = batadv_hardif_neigh_get_or_create(hard_iface, |
3111beed | 684 | neigh_addr, orig_node); |
cef63419 ML |
685 | if (!hardif_neigh) |
686 | goto out; | |
687 | ||
704509b8 | 688 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 689 | if (!neigh_node) |
7ae8b285 | 690 | goto out; |
c6c8fea2 | 691 | |
9591a79f | 692 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
693 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
694 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 695 | |
17a86915 | 696 | kref_get(&hard_iface->refcount); |
8fdd0153 | 697 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
698 | neigh_node->if_incoming = hard_iface; |
699 | neigh_node->orig_node = orig_node; | |
e48474ed | 700 | neigh_node->last_seen = jiffies; |
0538f759 | 701 | |
abe59c65 SE |
702 | /* increment unique neighbor refcount */ |
703 | kref_get(&hardif_neigh->refcount); | |
704 | neigh_node->hardif_neigh = hardif_neigh; | |
705 | ||
1605d0d6 | 706 | /* extra reference for return */ |
77ae32e8 | 707 | kref_init(&neigh_node->refcount); |
c6c8fea2 | 708 | |
84274458 | 709 | kref_get(&neigh_node->refcount); |
741aa06b | 710 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); |
741aa06b ML |
711 | |
712 | batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv, | |
713 | "Creating new neighbor %pM for orig_node %pM on interface %s\n", | |
714 | neigh_addr, orig_node->orig, hard_iface->net_dev->name); | |
715 | ||
7ae8b285 | 716 | out: |
e123705e LL |
717 | spin_unlock_bh(&orig_node->neigh_list_lock); |
718 | ||
cef63419 | 719 | if (hardif_neigh) |
accadc35 | 720 | batadv_hardif_neigh_put(hardif_neigh); |
c6c8fea2 SE |
721 | return neigh_node; |
722 | } | |
723 | ||
6f0a6b5e | 724 | /** |
7e9a8c2c | 725 | * batadv_neigh_node_get_or_create() - retrieve or create a neigh node object |
6f0a6b5e ML |
726 | * @orig_node: originator object representing the neighbour |
727 | * @hard_iface: the interface where the neighbour is connected to | |
728 | * @neigh_addr: the mac address of the neighbour interface | |
729 | * | |
730 | * Return: the neighbour node if found or created or NULL otherwise. | |
731 | */ | |
732 | struct batadv_neigh_node * | |
733 | batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, | |
734 | struct batadv_hard_iface *hard_iface, | |
735 | const u8 *neigh_addr) | |
736 | { | |
422d2f77 | 737 | struct batadv_neigh_node *neigh_node; |
6f0a6b5e ML |
738 | |
739 | /* first check without locking to avoid the overhead */ | |
740 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); | |
741 | if (neigh_node) | |
742 | return neigh_node; | |
743 | ||
744 | return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); | |
745 | } | |
746 | ||
dc1cbd14 | 747 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
7587405a | 748 | /** |
7e9a8c2c | 749 | * batadv_hardif_neigh_seq_print_text() - print the single hop neighbour list |
7587405a ML |
750 | * @seq: neighbour table seq_file struct |
751 | * @offset: not used | |
752 | * | |
62fe710f | 753 | * Return: always 0 |
7587405a ML |
754 | */ |
755 | int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) | |
756 | { | |
757 | struct net_device *net_dev = (struct net_device *)seq->private; | |
758 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
759 | struct batadv_hard_iface *primary_if; | |
760 | ||
761 | primary_if = batadv_seq_print_text_primary_if_get(seq); | |
762 | if (!primary_if) | |
763 | return 0; | |
764 | ||
765 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", | |
766 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, | |
767 | primary_if->net_dev->dev_addr, net_dev->name, | |
29824a55 | 768 | bat_priv->algo_ops->name); |
7587405a | 769 | |
82047ad7 | 770 | batadv_hardif_put(primary_if); |
7587405a | 771 | |
29824a55 | 772 | if (!bat_priv->algo_ops->neigh.print) { |
7587405a ML |
773 | seq_puts(seq, |
774 | "No printing function for this routing protocol\n"); | |
775 | return 0; | |
776 | } | |
777 | ||
29824a55 | 778 | bat_priv->algo_ops->neigh.print(bat_priv, seq); |
7587405a ML |
779 | return 0; |
780 | } | |
dc1cbd14 | 781 | #endif |
7587405a | 782 | |
85cf8c85 | 783 | /** |
7e9a8c2c SE |
784 | * batadv_hardif_neigh_dump() - Dump to netlink the neighbor infos for a |
785 | * specific outgoing interface | |
85cf8c85 MS |
786 | * @msg: message to dump into |
787 | * @cb: parameters for the dump | |
788 | * | |
789 | * Return: 0 or error value | |
790 | */ | |
791 | int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
792 | { | |
793 | struct net *net = sock_net(cb->skb->sk); | |
794 | struct net_device *soft_iface; | |
795 | struct net_device *hard_iface = NULL; | |
796 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
797 | struct batadv_priv *bat_priv; | |
798 | struct batadv_hard_iface *primary_if = NULL; | |
799 | int ret; | |
800 | int ifindex, hard_ifindex; | |
801 | ||
802 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
803 | if (!ifindex) | |
804 | return -EINVAL; | |
805 | ||
806 | soft_iface = dev_get_by_index(net, ifindex); | |
807 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
808 | ret = -ENODEV; | |
809 | goto out; | |
810 | } | |
811 | ||
812 | bat_priv = netdev_priv(soft_iface); | |
813 | ||
814 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
815 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
816 | ret = -ENOENT; | |
817 | goto out; | |
818 | } | |
819 | ||
820 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
821 | BATADV_ATTR_HARD_IFINDEX); | |
822 | if (hard_ifindex) { | |
823 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
824 | if (hard_iface) | |
825 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
826 | ||
827 | if (!hardif) { | |
828 | ret = -ENODEV; | |
829 | goto out; | |
830 | } | |
831 | ||
832 | if (hardif->soft_iface != soft_iface) { | |
833 | ret = -ENOENT; | |
834 | goto out; | |
835 | } | |
836 | } | |
837 | ||
838 | if (!bat_priv->algo_ops->neigh.dump) { | |
839 | ret = -EOPNOTSUPP; | |
840 | goto out; | |
841 | } | |
842 | ||
843 | bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif); | |
844 | ||
845 | ret = msg->len; | |
846 | ||
847 | out: | |
848 | if (hardif) | |
849 | batadv_hardif_put(hardif); | |
850 | if (hard_iface) | |
851 | dev_put(hard_iface); | |
852 | if (primary_if) | |
853 | batadv_hardif_put(primary_if); | |
854 | if (soft_iface) | |
855 | dev_put(soft_iface); | |
856 | ||
857 | return ret; | |
858 | } | |
859 | ||
7351a482 | 860 | /** |
7e9a8c2c | 861 | * batadv_orig_ifinfo_release() - release orig_ifinfo from lists and queue for |
2baa753c | 862 | * free after rcu grace period |
a6ba0d34 | 863 | * @ref: kref pointer of the orig_ifinfo |
7351a482 | 864 | */ |
a6ba0d34 | 865 | static void batadv_orig_ifinfo_release(struct kref *ref) |
7351a482 | 866 | { |
a6ba0d34 | 867 | struct batadv_orig_ifinfo *orig_ifinfo; |
000c8dff | 868 | struct batadv_neigh_node *router; |
7351a482 | 869 | |
a6ba0d34 SE |
870 | orig_ifinfo = container_of(ref, struct batadv_orig_ifinfo, refcount); |
871 | ||
7351a482 | 872 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 873 | batadv_hardif_put(orig_ifinfo->if_outgoing); |
7351a482 | 874 | |
000c8dff SW |
875 | /* this is the last reference to this object */ |
876 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
877 | if (router) | |
25bb2509 | 878 | batadv_neigh_node_put(router); |
2baa753c SE |
879 | |
880 | kfree_rcu(orig_ifinfo, rcu); | |
7351a482 SW |
881 | } |
882 | ||
883 | /** | |
7e9a8c2c | 884 | * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release |
deed9660 | 885 | * the orig_ifinfo |
7351a482 SW |
886 | * @orig_ifinfo: the orig_ifinfo object to release |
887 | */ | |
35f94779 | 888 | void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) |
7351a482 | 889 | { |
a6ba0d34 | 890 | kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); |
7351a482 SW |
891 | } |
892 | ||
893 | /** | |
7e9a8c2c | 894 | * batadv_orig_node_free_rcu() - free the orig_node |
deed9660 | 895 | * @rcu: rcu pointer of the orig_node |
7351a482 | 896 | */ |
deed9660 | 897 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
7351a482 | 898 | { |
deed9660 SE |
899 | struct batadv_orig_node *orig_node; |
900 | ||
901 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); | |
902 | ||
903 | batadv_mcast_purge_orig(orig_node); | |
904 | ||
905 | batadv_frag_purge_orig(orig_node, NULL); | |
906 | ||
deed9660 SE |
907 | kfree(orig_node->tt_buff); |
908 | kfree(orig_node); | |
7351a482 SW |
909 | } |
910 | ||
deed9660 | 911 | /** |
7e9a8c2c | 912 | * batadv_orig_node_release() - release orig_node from lists and queue for |
deed9660 | 913 | * free after rcu grace period |
7c124391 | 914 | * @ref: kref pointer of the orig_node |
deed9660 | 915 | */ |
7c124391 | 916 | static void batadv_orig_node_release(struct kref *ref) |
c6c8fea2 | 917 | { |
b67bfe0d | 918 | struct hlist_node *node_tmp; |
f6c8b711 | 919 | struct batadv_neigh_node *neigh_node; |
7c124391 | 920 | struct batadv_orig_node *orig_node; |
7351a482 | 921 | struct batadv_orig_ifinfo *orig_ifinfo; |
33fbb1f3 | 922 | struct batadv_orig_node_vlan *vlan; |
cbef1e10 | 923 | struct batadv_orig_ifinfo *last_candidate; |
16b1aba8 | 924 | |
7c124391 SE |
925 | orig_node = container_of(ref, struct batadv_orig_node, refcount); |
926 | ||
f987ed6e ML |
927 | spin_lock_bh(&orig_node->neigh_list_lock); |
928 | ||
c6c8fea2 | 929 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 930 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 931 | &orig_node->neigh_list, list) { |
f987ed6e | 932 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 933 | batadv_neigh_node_put(neigh_node); |
c6c8fea2 SE |
934 | } |
935 | ||
7351a482 SW |
936 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, |
937 | &orig_node->ifinfo_list, list) { | |
938 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 939 | batadv_orig_ifinfo_put(orig_ifinfo); |
7351a482 | 940 | } |
cbef1e10 SE |
941 | |
942 | last_candidate = orig_node->last_bonding_candidate; | |
943 | orig_node->last_bonding_candidate = NULL; | |
f987ed6e ML |
944 | spin_unlock_bh(&orig_node->neigh_list_lock); |
945 | ||
cbef1e10 SE |
946 | if (last_candidate) |
947 | batadv_orig_ifinfo_put(last_candidate); | |
948 | ||
33fbb1f3 SE |
949 | spin_lock_bh(&orig_node->vlan_list_lock); |
950 | hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) { | |
951 | hlist_del_rcu(&vlan->list); | |
952 | batadv_orig_node_vlan_put(vlan); | |
953 | } | |
954 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
955 | ||
d56b1705 MH |
956 | /* Free nc_nodes */ |
957 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
958 | ||
deed9660 | 959 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
c6c8fea2 SE |
960 | } |
961 | ||
72822225 | 962 | /** |
7e9a8c2c | 963 | * batadv_orig_node_put() - decrement the orig node refcounter and possibly |
deed9660 | 964 | * release it |
72822225 LL |
965 | * @orig_node: the orig node to free |
966 | */ | |
5d967310 | 967 | void batadv_orig_node_put(struct batadv_orig_node *orig_node) |
7b36e8ee | 968 | { |
7c124391 | 969 | kref_put(&orig_node->refcount, batadv_orig_node_release); |
7b36e8ee ML |
970 | } |
971 | ||
ff15c27c SE |
972 | /** |
973 | * batadv_originator_free() - Free all originator structures | |
974 | * @bat_priv: the bat priv with all the soft interface information | |
975 | */ | |
56303d34 | 976 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 977 | { |
5bf74e9c | 978 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 979 | struct hlist_node *node_tmp; |
16b1aba8 | 980 | struct hlist_head *head; |
16b1aba8 | 981 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 982 | struct batadv_orig_node *orig_node; |
6b5e971a | 983 | u32 i; |
16b1aba8 ML |
984 | |
985 | if (!hash) | |
c6c8fea2 SE |
986 | return; |
987 | ||
988 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
989 | ||
c6c8fea2 | 990 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
991 | |
992 | for (i = 0; i < hash->size; i++) { | |
993 | head = &hash->table[i]; | |
994 | list_lock = &hash->list_locks[i]; | |
995 | ||
996 | spin_lock_bh(list_lock); | |
b67bfe0d | 997 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 998 | head, hash_entry) { |
b67bfe0d | 999 | hlist_del_rcu(&orig_node->hash_entry); |
5d967310 | 1000 | batadv_orig_node_put(orig_node); |
16b1aba8 ML |
1001 | } |
1002 | spin_unlock_bh(list_lock); | |
1003 | } | |
1004 | ||
1a8eaf07 | 1005 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
1006 | } |
1007 | ||
bbad0a5e | 1008 | /** |
7e9a8c2c | 1009 | * batadv_orig_node_new() - creates a new orig_node |
bbad0a5e AQ |
1010 | * @bat_priv: the bat priv with all the soft interface information |
1011 | * @addr: the mac address of the originator | |
1012 | * | |
1013 | * Creates a new originator object and initialise all the generic fields. | |
1014 | * The new object is not added to the originator list. | |
62fe710f SE |
1015 | * |
1016 | * Return: the newly created object or NULL on failure. | |
9cfc7bd6 | 1017 | */ |
bbad0a5e | 1018 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
6b5e971a | 1019 | const u8 *addr) |
c6c8fea2 | 1020 | { |
56303d34 | 1021 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 1022 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 1023 | unsigned long reset_time; |
bbad0a5e | 1024 | int i; |
c6c8fea2 | 1025 | |
39c75a51 SE |
1026 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1027 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 1028 | |
704509b8 | 1029 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
1030 | if (!orig_node) |
1031 | return NULL; | |
1032 | ||
9591a79f | 1033 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
d0fa4f3f | 1034 | INIT_HLIST_HEAD(&orig_node->vlan_list); |
7351a482 | 1035 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 1036 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 1037 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 1038 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 1039 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 1040 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 1041 | |
d56b1705 MH |
1042 | batadv_nc_init_orig(orig_node); |
1043 | ||
7b36e8ee | 1044 | /* extra reference for return */ |
7c124391 | 1045 | kref_init(&orig_node->refcount); |
c6c8fea2 | 1046 | |
16b1aba8 | 1047 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 1048 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 1049 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 1050 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 1051 | orig_node->tt_buff = NULL; |
a73105b8 | 1052 | orig_node->tt_buff_len = 0; |
2c667a33 | 1053 | orig_node->last_seen = jiffies; |
42d0b044 SE |
1054 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
1055 | orig_node->bcast_seqno_reset = reset_time; | |
8a4023c5 | 1056 | |
60432d75 LL |
1057 | #ifdef CONFIG_BATMAN_ADV_MCAST |
1058 | orig_node->mcast_flags = BATADV_NO_FLAGS; | |
8a4023c5 LL |
1059 | INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node); |
1060 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node); | |
1061 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node); | |
1062 | spin_lock_init(&orig_node->mcast_handler_lock); | |
60432d75 | 1063 | #endif |
c6c8fea2 | 1064 | |
7ea7b4a1 AQ |
1065 | /* create a vlan object for the "untagged" LAN */ |
1066 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
1067 | if (!vlan) | |
1068 | goto free_orig_node; | |
1069 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
1070 | * Immediately release vlan since it is not needed anymore in this | |
1071 | * context | |
1072 | */ | |
21754e25 | 1073 | batadv_orig_node_vlan_put(vlan); |
7ea7b4a1 | 1074 | |
610bfc6b | 1075 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
176e5b77 | 1076 | INIT_HLIST_HEAD(&orig_node->fragments[i].fragment_list); |
610bfc6b MH |
1077 | spin_lock_init(&orig_node->fragments[i].lock); |
1078 | orig_node->fragments[i].size = 0; | |
1079 | } | |
1080 | ||
c6c8fea2 | 1081 | return orig_node; |
c6c8fea2 SE |
1082 | free_orig_node: |
1083 | kfree(orig_node); | |
1084 | return NULL; | |
1085 | } | |
1086 | ||
709de13f | 1087 | /** |
7e9a8c2c | 1088 | * batadv_purge_neigh_ifinfo() - purge obsolete ifinfo entries from neighbor |
709de13f SW |
1089 | * @bat_priv: the bat priv with all the soft interface information |
1090 | * @neigh: orig node which is to be checked | |
1091 | */ | |
1092 | static void | |
1093 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
1094 | struct batadv_neigh_node *neigh) | |
1095 | { | |
1096 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
1097 | struct batadv_hard_iface *if_outgoing; | |
1098 | struct hlist_node *node_tmp; | |
1099 | ||
1100 | spin_lock_bh(&neigh->ifinfo_lock); | |
1101 | ||
1102 | /* for all ifinfo objects for this neighinator */ | |
1103 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
1104 | &neigh->ifinfo_list, list) { | |
1105 | if_outgoing = neigh_ifinfo->if_outgoing; | |
1106 | ||
1107 | /* always keep the default interface */ | |
1108 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1109 | continue; | |
1110 | ||
1111 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1112 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1113 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1114 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
709de13f SW |
1115 | continue; |
1116 | ||
1117 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1118 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
1119 | neigh->addr, if_outgoing->net_dev->name); | |
1120 | ||
1121 | hlist_del_rcu(&neigh_ifinfo->list); | |
044fa3ae | 1122 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
709de13f SW |
1123 | } |
1124 | ||
1125 | spin_unlock_bh(&neigh->ifinfo_lock); | |
1126 | } | |
1127 | ||
7351a482 | 1128 | /** |
7e9a8c2c | 1129 | * batadv_purge_orig_ifinfo() - purge obsolete ifinfo entries from originator |
7351a482 SW |
1130 | * @bat_priv: the bat priv with all the soft interface information |
1131 | * @orig_node: orig node which is to be checked | |
1132 | * | |
62fe710f | 1133 | * Return: true if any ifinfo entry was purged, false otherwise. |
7351a482 SW |
1134 | */ |
1135 | static bool | |
1136 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
1137 | struct batadv_orig_node *orig_node) | |
1138 | { | |
1139 | struct batadv_orig_ifinfo *orig_ifinfo; | |
1140 | struct batadv_hard_iface *if_outgoing; | |
1141 | struct hlist_node *node_tmp; | |
1142 | bool ifinfo_purged = false; | |
1143 | ||
1144 | spin_lock_bh(&orig_node->neigh_list_lock); | |
1145 | ||
1146 | /* for all ifinfo objects for this originator */ | |
1147 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
1148 | &orig_node->ifinfo_list, list) { | |
1149 | if_outgoing = orig_ifinfo->if_outgoing; | |
1150 | ||
1151 | /* always keep the default interface */ | |
1152 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1153 | continue; | |
1154 | ||
1155 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1156 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1157 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1158 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
7351a482 SW |
1159 | continue; |
1160 | ||
1161 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1162 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
1163 | orig_node->orig, if_outgoing->net_dev->name); | |
1164 | ||
1165 | ifinfo_purged = true; | |
1166 | ||
1167 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 1168 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 SW |
1169 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
1170 | orig_node->last_bonding_candidate = NULL; | |
35f94779 | 1171 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 | 1172 | } |
7351a482 SW |
1173 | } |
1174 | ||
1175 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
1176 | ||
1177 | return ifinfo_purged; | |
1178 | } | |
1179 | ||
89652331 | 1180 | /** |
7e9a8c2c | 1181 | * batadv_purge_orig_neighbors() - purges neighbors from originator |
89652331 SW |
1182 | * @bat_priv: the bat priv with all the soft interface information |
1183 | * @orig_node: orig node which is to be checked | |
1184 | * | |
62fe710f | 1185 | * Return: true if any neighbor was purged, false otherwise |
89652331 | 1186 | */ |
56303d34 SE |
1187 | static bool |
1188 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 1189 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 1190 | { |
b67bfe0d | 1191 | struct hlist_node *node_tmp; |
56303d34 | 1192 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 1193 | bool neigh_purged = false; |
0b0094e0 | 1194 | unsigned long last_seen; |
56303d34 | 1195 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 1196 | |
f987ed6e ML |
1197 | spin_lock_bh(&orig_node->neigh_list_lock); |
1198 | ||
c6c8fea2 | 1199 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 1200 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 1201 | &orig_node->neigh_list, list) { |
1eda58bf SE |
1202 | last_seen = neigh_node->last_seen; |
1203 | if_incoming = neigh_node->if_incoming; | |
1204 | ||
825ffe1f SE |
1205 | if (batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT) || |
1206 | if_incoming->if_status == BATADV_IF_INACTIVE || | |
1207 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1208 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) { | |
1209 | if (if_incoming->if_status == BATADV_IF_INACTIVE || | |
1210 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1211 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) | |
39c75a51 | 1212 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1213 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
1214 | orig_node->orig, neigh_node->addr, | |
1215 | if_incoming->net_dev->name); | |
c6c8fea2 | 1216 | else |
39c75a51 | 1217 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1218 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
1219 | orig_node->orig, neigh_node->addr, | |
1220 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
1221 | |
1222 | neigh_purged = true; | |
9591a79f | 1223 | |
f987ed6e | 1224 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 1225 | batadv_neigh_node_put(neigh_node); |
709de13f SW |
1226 | } else { |
1227 | /* only necessary if not the whole neighbor is to be | |
1228 | * deleted, but some interface has been removed. | |
1229 | */ | |
1230 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
1231 | } |
1232 | } | |
f987ed6e ML |
1233 | |
1234 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
1235 | return neigh_purged; |
1236 | } | |
1237 | ||
89652331 | 1238 | /** |
7e9a8c2c | 1239 | * batadv_find_best_neighbor() - finds the best neighbor after purging |
89652331 SW |
1240 | * @bat_priv: the bat priv with all the soft interface information |
1241 | * @orig_node: orig node which is to be checked | |
1242 | * @if_outgoing: the interface for which the metric should be compared | |
1243 | * | |
62fe710f | 1244 | * Return: the current best neighbor, with refcount increased. |
89652331 SW |
1245 | */ |
1246 | static struct batadv_neigh_node * | |
1247 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
1248 | struct batadv_orig_node *orig_node, | |
1249 | struct batadv_hard_iface *if_outgoing) | |
1250 | { | |
1251 | struct batadv_neigh_node *best = NULL, *neigh; | |
29824a55 | 1252 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
89652331 SW |
1253 | |
1254 | rcu_read_lock(); | |
1255 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
29824a55 AQ |
1256 | if (best && (bao->neigh.cmp(neigh, if_outgoing, best, |
1257 | if_outgoing) <= 0)) | |
89652331 SW |
1258 | continue; |
1259 | ||
77ae32e8 | 1260 | if (!kref_get_unless_zero(&neigh->refcount)) |
89652331 SW |
1261 | continue; |
1262 | ||
1263 | if (best) | |
25bb2509 | 1264 | batadv_neigh_node_put(best); |
89652331 SW |
1265 | |
1266 | best = neigh; | |
1267 | } | |
1268 | rcu_read_unlock(); | |
1269 | ||
1270 | return best; | |
1271 | } | |
1272 | ||
7351a482 | 1273 | /** |
7e9a8c2c | 1274 | * batadv_purge_orig_node() - purges obsolete information from an orig_node |
7351a482 SW |
1275 | * @bat_priv: the bat priv with all the soft interface information |
1276 | * @orig_node: orig node which is to be checked | |
1277 | * | |
1278 | * This function checks if the orig_node or substructures of it have become | |
1279 | * obsolete, and purges this information if that's the case. | |
1280 | * | |
62fe710f | 1281 | * Return: true if the orig_node is to be removed, false otherwise. |
7351a482 | 1282 | */ |
56303d34 SE |
1283 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
1284 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 1285 | { |
56303d34 | 1286 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 1287 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 1288 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 1289 | |
42d0b044 SE |
1290 | if (batadv_has_timed_out(orig_node->last_seen, |
1291 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 1292 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1293 | "Originator timeout: originator %pM, last_seen %u\n", |
1294 | orig_node->orig, | |
1295 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 1296 | return true; |
c6c8fea2 | 1297 | } |
7b955a9f SW |
1298 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
1299 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 1300 | |
7b955a9f | 1301 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
1302 | return false; |
1303 | ||
7351a482 | 1304 | /* first for NULL ... */ |
89652331 SW |
1305 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
1306 | BATADV_IF_DEFAULT); | |
7351a482 SW |
1307 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
1308 | best_neigh_node); | |
89652331 | 1309 | if (best_neigh_node) |
25bb2509 | 1310 | batadv_neigh_node_put(best_neigh_node); |
c6c8fea2 | 1311 | |
7351a482 SW |
1312 | /* ... then for all other interfaces. */ |
1313 | rcu_read_lock(); | |
1314 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
1315 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
1316 | continue; | |
1317 | ||
1318 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
1319 | continue; | |
1320 | ||
27353446 SE |
1321 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
1322 | continue; | |
1323 | ||
7351a482 SW |
1324 | best_neigh_node = batadv_find_best_neighbor(bat_priv, |
1325 | orig_node, | |
1326 | hard_iface); | |
1327 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
1328 | best_neigh_node); | |
1329 | if (best_neigh_node) | |
25bb2509 | 1330 | batadv_neigh_node_put(best_neigh_node); |
27353446 SE |
1331 | |
1332 | batadv_hardif_put(hard_iface); | |
7351a482 SW |
1333 | } |
1334 | rcu_read_unlock(); | |
1335 | ||
c6c8fea2 SE |
1336 | return false; |
1337 | } | |
1338 | ||
3b1709de SE |
1339 | /** |
1340 | * batadv_purge_orig_ref() - Purge all outdated originators | |
1341 | * @bat_priv: the bat priv with all the soft interface information | |
1342 | */ | |
1343 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) | |
c6c8fea2 | 1344 | { |
5bf74e9c | 1345 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 1346 | struct hlist_node *node_tmp; |
c6c8fea2 | 1347 | struct hlist_head *head; |
fb778ea1 | 1348 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 1349 | struct batadv_orig_node *orig_node; |
6b5e971a | 1350 | u32 i; |
c6c8fea2 SE |
1351 | |
1352 | if (!hash) | |
1353 | return; | |
1354 | ||
c6c8fea2 SE |
1355 | /* for all origins... */ |
1356 | for (i = 0; i < hash->size; i++) { | |
1357 | head = &hash->table[i]; | |
fb778ea1 | 1358 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 1359 | |
fb778ea1 | 1360 | spin_lock_bh(list_lock); |
b67bfe0d | 1361 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 1362 | head, hash_entry) { |
03fc7f86 | 1363 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 1364 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 1365 | hlist_del_rcu(&orig_node->hash_entry); |
9d31b3ce LL |
1366 | batadv_tt_global_del_orig(orig_node->bat_priv, |
1367 | orig_node, -1, | |
1368 | "originator timed out"); | |
5d967310 | 1369 | batadv_orig_node_put(orig_node); |
fb778ea1 | 1370 | continue; |
c6c8fea2 | 1371 | } |
610bfc6b MH |
1372 | |
1373 | batadv_frag_purge_orig(orig_node, | |
1374 | batadv_frag_check_entry); | |
c6c8fea2 | 1375 | } |
fb778ea1 | 1376 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
1377 | } |
1378 | ||
7cf06bc6 | 1379 | batadv_gw_election(bat_priv); |
c6c8fea2 SE |
1380 | } |
1381 | ||
03fc7f86 | 1382 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 1383 | { |
56303d34 SE |
1384 | struct delayed_work *delayed_work; |
1385 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 1386 | |
4ba4bc0f | 1387 | delayed_work = to_delayed_work(work); |
56303d34 | 1388 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
3b1709de | 1389 | batadv_purge_orig_ref(bat_priv); |
72414442 AQ |
1390 | queue_delayed_work(batadv_event_workqueue, |
1391 | &bat_priv->orig_work, | |
1392 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1393 | } |
1394 | ||
dc1cbd14 | 1395 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
ff15c27c SE |
1396 | |
1397 | /** | |
1398 | * batadv_orig_seq_print_text() - Print the originator table in a seq file | |
1399 | * @seq: seq file to print on | |
1400 | * @offset: not used | |
1401 | * | |
1402 | * Return: always 0 | |
1403 | */ | |
7d211efc | 1404 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
1405 | { |
1406 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 1407 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 1408 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 1409 | |
30da63a6 ML |
1410 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
1411 | if (!primary_if) | |
737a2a22 | 1412 | return 0; |
c6c8fea2 | 1413 | |
737a2a22 | 1414 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 1415 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 | 1416 | primary_if->net_dev->dev_addr, net_dev->name, |
29824a55 | 1417 | bat_priv->algo_ops->name); |
c6c8fea2 | 1418 | |
82047ad7 | 1419 | batadv_hardif_put(primary_if); |
c6c8fea2 | 1420 | |
29824a55 | 1421 | if (!bat_priv->algo_ops->orig.print) { |
737a2a22 AQ |
1422 | seq_puts(seq, |
1423 | "No printing function for this routing protocol\n"); | |
1424 | return 0; | |
c6c8fea2 SE |
1425 | } |
1426 | ||
29824a55 | 1427 | bat_priv->algo_ops->orig.print(bat_priv, seq, BATADV_IF_DEFAULT); |
c6c8fea2 | 1428 | |
30da63a6 | 1429 | return 0; |
c6c8fea2 SE |
1430 | } |
1431 | ||
cb1c92ec | 1432 | /** |
7e9a8c2c | 1433 | * batadv_orig_hardif_seq_print_text() - writes originator infos for a specific |
cb1c92ec SW |
1434 | * outgoing interface |
1435 | * @seq: debugfs table seq_file struct | |
1436 | * @offset: not used | |
1437 | * | |
62fe710f | 1438 | * Return: 0 |
cb1c92ec SW |
1439 | */ |
1440 | int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) | |
1441 | { | |
1442 | struct net_device *net_dev = (struct net_device *)seq->private; | |
1443 | struct batadv_hard_iface *hard_iface; | |
1444 | struct batadv_priv *bat_priv; | |
1445 | ||
1446 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1447 | ||
1448 | if (!hard_iface || !hard_iface->soft_iface) { | |
1449 | seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); | |
1450 | goto out; | |
1451 | } | |
1452 | ||
1453 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
29824a55 | 1454 | if (!bat_priv->algo_ops->orig.print) { |
cb1c92ec SW |
1455 | seq_puts(seq, |
1456 | "No printing function for this routing protocol\n"); | |
1457 | goto out; | |
1458 | } | |
1459 | ||
1460 | if (hard_iface->if_status != BATADV_IF_ACTIVE) { | |
1461 | seq_puts(seq, "Interface not active\n"); | |
1462 | goto out; | |
1463 | } | |
1464 | ||
1465 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", | |
1466 | BATADV_SOURCE_VERSION, hard_iface->net_dev->name, | |
1467 | hard_iface->net_dev->dev_addr, | |
29824a55 | 1468 | hard_iface->soft_iface->name, bat_priv->algo_ops->name); |
cb1c92ec | 1469 | |
29824a55 | 1470 | bat_priv->algo_ops->orig.print(bat_priv, seq, hard_iface); |
cb1c92ec SW |
1471 | |
1472 | out: | |
16a41423 | 1473 | if (hard_iface) |
82047ad7 | 1474 | batadv_hardif_put(hard_iface); |
cb1c92ec SW |
1475 | return 0; |
1476 | } | |
dc1cbd14 | 1477 | #endif |
cb1c92ec | 1478 | |
85cf8c85 | 1479 | /** |
7e9a8c2c | 1480 | * batadv_orig_dump() - Dump to netlink the originator infos for a specific |
85cf8c85 MS |
1481 | * outgoing interface |
1482 | * @msg: message to dump into | |
1483 | * @cb: parameters for the dump | |
1484 | * | |
1485 | * Return: 0 or error value | |
1486 | */ | |
1487 | int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
1488 | { | |
1489 | struct net *net = sock_net(cb->skb->sk); | |
1490 | struct net_device *soft_iface; | |
1491 | struct net_device *hard_iface = NULL; | |
1492 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
1493 | struct batadv_priv *bat_priv; | |
1494 | struct batadv_hard_iface *primary_if = NULL; | |
1495 | int ret; | |
1496 | int ifindex, hard_ifindex; | |
1497 | ||
1498 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
1499 | if (!ifindex) | |
1500 | return -EINVAL; | |
1501 | ||
1502 | soft_iface = dev_get_by_index(net, ifindex); | |
1503 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
1504 | ret = -ENODEV; | |
1505 | goto out; | |
1506 | } | |
1507 | ||
1508 | bat_priv = netdev_priv(soft_iface); | |
1509 | ||
1510 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
1511 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
1512 | ret = -ENOENT; | |
1513 | goto out; | |
1514 | } | |
1515 | ||
1516 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
1517 | BATADV_ATTR_HARD_IFINDEX); | |
1518 | if (hard_ifindex) { | |
1519 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
1520 | if (hard_iface) | |
1521 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
1522 | ||
1523 | if (!hardif) { | |
1524 | ret = -ENODEV; | |
1525 | goto out; | |
1526 | } | |
1527 | ||
1528 | if (hardif->soft_iface != soft_iface) { | |
1529 | ret = -ENOENT; | |
1530 | goto out; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | if (!bat_priv->algo_ops->orig.dump) { | |
1535 | ret = -EOPNOTSUPP; | |
1536 | goto out; | |
1537 | } | |
1538 | ||
1539 | bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif); | |
1540 | ||
1541 | ret = msg->len; | |
1542 | ||
1543 | out: | |
1544 | if (hardif) | |
1545 | batadv_hardif_put(hardif); | |
1546 | if (hard_iface) | |
1547 | dev_put(hard_iface); | |
1548 | if (primary_if) | |
1549 | batadv_hardif_put(primary_if); | |
1550 | if (soft_iface) | |
1551 | dev_put(soft_iface); | |
1552 | ||
1553 | return ret; | |
1554 | } |