Commit | Line | Data |
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7db7d9f3 | 1 | // SPDX-License-Identifier: GPL-2.0 |
68e039f9 | 2 | /* Copyright (C) 2009-2020 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner, Simon Wunderlich | |
c6c8fea2 SE |
5 | */ |
6 | ||
1e2c2a4f | 7 | #include "originator.h" |
c6c8fea2 | 8 | #include "main.h" |
1e2c2a4f | 9 | |
7c124391 | 10 | #include <linux/atomic.h> |
1e2c2a4f SE |
11 | #include <linux/errno.h> |
12 | #include <linux/etherdevice.h> | |
b92b94ac | 13 | #include <linux/gfp.h> |
1e2c2a4f SE |
14 | #include <linux/jiffies.h> |
15 | #include <linux/kernel.h> | |
90f564df | 16 | #include <linux/kref.h> |
1e2c2a4f SE |
17 | #include <linux/list.h> |
18 | #include <linux/lockdep.h> | |
19 | #include <linux/netdevice.h> | |
85cf8c85 | 20 | #include <linux/netlink.h> |
d0fa4f3f | 21 | #include <linux/rculist.h> |
3326afe6 | 22 | #include <linux/rcupdate.h> |
85cf8c85 | 23 | #include <linux/skbuff.h> |
1e2c2a4f SE |
24 | #include <linux/slab.h> |
25 | #include <linux/spinlock.h> | |
3326afe6 | 26 | #include <linux/stddef.h> |
1e2c2a4f | 27 | #include <linux/workqueue.h> |
85cf8c85 | 28 | #include <net/sock.h> |
61caf3d1 | 29 | #include <uapi/linux/batadv_packet.h> |
85cf8c85 | 30 | #include <uapi/linux/batman_adv.h> |
1e2c2a4f | 31 | |
01d350d1 | 32 | #include "bat_algo.h" |
785ea114 | 33 | #include "distributed-arp-table.h" |
1e2c2a4f | 34 | #include "fragmentation.h" |
c6c8fea2 SE |
35 | #include "gateway_client.h" |
36 | #include "hard-interface.h" | |
1e2c2a4f | 37 | #include "hash.h" |
ba412080 | 38 | #include "log.h" |
60432d75 | 39 | #include "multicast.h" |
85cf8c85 | 40 | #include "netlink.h" |
1e2c2a4f SE |
41 | #include "network-coding.h" |
42 | #include "routing.h" | |
85cf8c85 | 43 | #include "soft-interface.h" |
1e2c2a4f | 44 | #include "translation-table.h" |
c6c8fea2 | 45 | |
dec05074 AQ |
46 | /* hash class keys */ |
47 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
48 | ||
ff15c27c SE |
49 | /** |
50 | * batadv_orig_hash_find() - Find and return originator from orig_hash | |
51 | * @bat_priv: the bat priv with all the soft interface information | |
52 | * @data: mac address of the originator | |
53 | * | |
54 | * Return: orig_node (with increased refcnt), NULL on errors | |
55 | */ | |
3326afe6 DV |
56 | struct batadv_orig_node * |
57 | batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data) | |
58 | { | |
59 | struct batadv_hashtable *hash = bat_priv->orig_hash; | |
60 | struct hlist_head *head; | |
61 | struct batadv_orig_node *orig_node, *orig_node_tmp = NULL; | |
62 | int index; | |
63 | ||
64 | if (!hash) | |
65 | return NULL; | |
66 | ||
67 | index = batadv_choose_orig(data, hash->size); | |
68 | head = &hash->table[index]; | |
69 | ||
70 | rcu_read_lock(); | |
71 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { | |
72 | if (!batadv_compare_eth(orig_node, data)) | |
73 | continue; | |
74 | ||
75 | if (!kref_get_unless_zero(&orig_node->refcount)) | |
76 | continue; | |
77 | ||
78 | orig_node_tmp = orig_node; | |
79 | break; | |
80 | } | |
81 | rcu_read_unlock(); | |
82 | ||
83 | return orig_node_tmp; | |
84 | } | |
85 | ||
03fc7f86 | 86 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 87 | |
62fe710f | 88 | /** |
7e9a8c2c | 89 | * batadv_compare_orig() - comparing function used in the originator hash table |
7afcbbef SE |
90 | * @node: node in the local table |
91 | * @data2: second object to compare the node to | |
62fe710f | 92 | * |
4b426b10 | 93 | * Return: true if they are the same originator |
62fe710f | 94 | */ |
4b426b10 | 95 | bool batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 96 | { |
56303d34 SE |
97 | const void *data1 = container_of(node, struct batadv_orig_node, |
98 | hash_entry); | |
b8e2dd13 | 99 | |
323813ed | 100 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
101 | } |
102 | ||
7ea7b4a1 | 103 | /** |
7e9a8c2c | 104 | * batadv_orig_node_vlan_get() - get an orig_node_vlan object |
7ea7b4a1 AQ |
105 | * @orig_node: the originator serving the VLAN |
106 | * @vid: the VLAN identifier | |
107 | * | |
62fe710f | 108 | * Return: the vlan object identified by vid and belonging to orig_node or NULL |
7ea7b4a1 AQ |
109 | * if it does not exist. |
110 | */ | |
111 | struct batadv_orig_node_vlan * | |
112 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
113 | unsigned short vid) | |
114 | { | |
115 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
116 | ||
117 | rcu_read_lock(); | |
d0fa4f3f | 118 | hlist_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { |
7ea7b4a1 AQ |
119 | if (tmp->vid != vid) |
120 | continue; | |
121 | ||
161a3be9 | 122 | if (!kref_get_unless_zero(&tmp->refcount)) |
7ea7b4a1 AQ |
123 | continue; |
124 | ||
125 | vlan = tmp; | |
126 | ||
127 | break; | |
128 | } | |
129 | rcu_read_unlock(); | |
130 | ||
131 | return vlan; | |
132 | } | |
133 | ||
134 | /** | |
7e9a8c2c | 135 | * batadv_orig_node_vlan_new() - search and possibly create an orig_node_vlan |
7ea7b4a1 AQ |
136 | * object |
137 | * @orig_node: the originator serving the VLAN | |
138 | * @vid: the VLAN identifier | |
139 | * | |
62fe710f | 140 | * Return: NULL in case of failure or the vlan object identified by vid and |
7ea7b4a1 AQ |
141 | * belonging to orig_node otherwise. The object is created and added to the list |
142 | * if it does not exist. | |
143 | * | |
144 | * The object is returned with refcounter increased by 1. | |
145 | */ | |
146 | struct batadv_orig_node_vlan * | |
147 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
148 | unsigned short vid) | |
149 | { | |
150 | struct batadv_orig_node_vlan *vlan; | |
151 | ||
152 | spin_lock_bh(&orig_node->vlan_list_lock); | |
153 | ||
154 | /* first look if an object for this vid already exists */ | |
155 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
156 | if (vlan) | |
157 | goto out; | |
158 | ||
159 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
160 | if (!vlan) | |
161 | goto out; | |
162 | ||
161a3be9 | 163 | kref_init(&vlan->refcount); |
7ea7b4a1 AQ |
164 | vlan->vid = vid; |
165 | ||
09537d18 | 166 | kref_get(&vlan->refcount); |
d0fa4f3f | 167 | hlist_add_head_rcu(&vlan->list, &orig_node->vlan_list); |
7ea7b4a1 AQ |
168 | |
169 | out: | |
170 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
171 | ||
172 | return vlan; | |
173 | } | |
174 | ||
175 | /** | |
7e9a8c2c | 176 | * batadv_orig_node_vlan_release() - release originator-vlan object from lists |
161a3be9 SE |
177 | * and queue for free after rcu grace period |
178 | * @ref: kref pointer of the originator-vlan object | |
179 | */ | |
180 | static void batadv_orig_node_vlan_release(struct kref *ref) | |
181 | { | |
182 | struct batadv_orig_node_vlan *orig_vlan; | |
183 | ||
184 | orig_vlan = container_of(ref, struct batadv_orig_node_vlan, refcount); | |
185 | ||
186 | kfree_rcu(orig_vlan, rcu); | |
187 | } | |
188 | ||
189 | /** | |
7e9a8c2c | 190 | * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release |
21754e25 | 191 | * the originator-vlan object |
7ea7b4a1 AQ |
192 | * @orig_vlan: the originator-vlan object to release |
193 | */ | |
21754e25 | 194 | void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) |
7ea7b4a1 | 195 | { |
161a3be9 | 196 | kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); |
7ea7b4a1 AQ |
197 | } |
198 | ||
ff15c27c SE |
199 | /** |
200 | * batadv_originator_init() - Initialize all originator structures | |
201 | * @bat_priv: the bat priv with all the soft interface information | |
202 | * | |
203 | * Return: 0 on success or negative error number in case of failure | |
204 | */ | |
56303d34 | 205 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
206 | { |
207 | if (bat_priv->orig_hash) | |
5346c35e | 208 | return 0; |
c6c8fea2 | 209 | |
1a8eaf07 | 210 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
211 | |
212 | if (!bat_priv->orig_hash) | |
213 | goto err; | |
214 | ||
dec05074 AQ |
215 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
216 | &batadv_orig_hash_lock_class_key); | |
217 | ||
72414442 AQ |
218 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
219 | queue_delayed_work(batadv_event_workqueue, | |
220 | &bat_priv->orig_work, | |
221 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
222 | ||
5346c35e | 223 | return 0; |
c6c8fea2 SE |
224 | |
225 | err: | |
5346c35e | 226 | return -ENOMEM; |
c6c8fea2 SE |
227 | } |
228 | ||
89652331 | 229 | /** |
7e9a8c2c | 230 | * batadv_neigh_ifinfo_release() - release neigh_ifinfo from lists and queue for |
ae3e1e36 | 231 | * free after rcu grace period |
962c6832 | 232 | * @ref: kref pointer of the neigh_ifinfo |
89652331 | 233 | */ |
962c6832 | 234 | static void batadv_neigh_ifinfo_release(struct kref *ref) |
89652331 | 235 | { |
962c6832 SE |
236 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
237 | ||
238 | neigh_ifinfo = container_of(ref, struct batadv_neigh_ifinfo, refcount); | |
239 | ||
ae3e1e36 | 240 | if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 241 | batadv_hardif_put(neigh_ifinfo->if_outgoing); |
ae3e1e36 SE |
242 | |
243 | kfree_rcu(neigh_ifinfo, rcu); | |
89652331 SW |
244 | } |
245 | ||
246 | /** | |
7e9a8c2c | 247 | * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release |
89652331 SW |
248 | * the neigh_ifinfo |
249 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
250 | */ | |
044fa3ae | 251 | void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) |
89652331 | 252 | { |
962c6832 | 253 | kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); |
89652331 SW |
254 | } |
255 | ||
cef63419 | 256 | /** |
7e9a8c2c | 257 | * batadv_hardif_neigh_release() - release hardif neigh node from lists and |
f6389692 | 258 | * queue for free after rcu grace period |
90f564df | 259 | * @ref: kref pointer of the neigh_node |
cef63419 | 260 | */ |
90f564df | 261 | static void batadv_hardif_neigh_release(struct kref *ref) |
cef63419 | 262 | { |
90f564df SE |
263 | struct batadv_hardif_neigh_node *hardif_neigh; |
264 | ||
265 | hardif_neigh = container_of(ref, struct batadv_hardif_neigh_node, | |
266 | refcount); | |
267 | ||
f6389692 SE |
268 | spin_lock_bh(&hardif_neigh->if_incoming->neigh_list_lock); |
269 | hlist_del_init_rcu(&hardif_neigh->list); | |
270 | spin_unlock_bh(&hardif_neigh->if_incoming->neigh_list_lock); | |
bab7c6c3 | 271 | |
82047ad7 | 272 | batadv_hardif_put(hardif_neigh->if_incoming); |
f6389692 | 273 | kfree_rcu(hardif_neigh, rcu); |
cef63419 ML |
274 | } |
275 | ||
276 | /** | |
7e9a8c2c | 277 | * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter |
f6389692 | 278 | * and possibly release it |
cef63419 ML |
279 | * @hardif_neigh: hardif neigh neighbor to free |
280 | */ | |
accadc35 | 281 | void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) |
cef63419 | 282 | { |
90f564df | 283 | kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); |
cef63419 ML |
284 | } |
285 | ||
89652331 | 286 | /** |
7e9a8c2c | 287 | * batadv_neigh_node_release() - release neigh_node from lists and queue for |
b4d922cf | 288 | * free after rcu grace period |
77ae32e8 | 289 | * @ref: kref pointer of the neigh_node |
89652331 | 290 | */ |
77ae32e8 | 291 | static void batadv_neigh_node_release(struct kref *ref) |
89652331 SW |
292 | { |
293 | struct hlist_node *node_tmp; | |
77ae32e8 | 294 | struct batadv_neigh_node *neigh_node; |
89652331 SW |
295 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
296 | ||
77ae32e8 | 297 | neigh_node = container_of(ref, struct batadv_neigh_node, refcount); |
89652331 SW |
298 | |
299 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
300 | &neigh_node->ifinfo_list, list) { | |
044fa3ae | 301 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
89652331 | 302 | } |
bcef1f3c | 303 | |
abe59c65 | 304 | batadv_hardif_neigh_put(neigh_node->hardif_neigh); |
cef63419 | 305 | |
82047ad7 | 306 | batadv_hardif_put(neigh_node->if_incoming); |
89652331 | 307 | |
b4d922cf | 308 | kfree_rcu(neigh_node, rcu); |
89652331 SW |
309 | } |
310 | ||
89652331 | 311 | /** |
7e9a8c2c | 312 | * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly |
77ae32e8 | 313 | * release it |
89652331 SW |
314 | * @neigh_node: neigh neighbor to free |
315 | */ | |
25bb2509 | 316 | void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 317 | { |
77ae32e8 | 318 | kref_put(&neigh_node->refcount, batadv_neigh_node_release); |
a4c135c5 SW |
319 | } |
320 | ||
7351a482 | 321 | /** |
7e9a8c2c | 322 | * batadv_orig_router_get() - router to the originator depending on iface |
7351a482 SW |
323 | * @orig_node: the orig node for the router |
324 | * @if_outgoing: the interface where the payload packet has been received or | |
325 | * the OGM should be sent to | |
326 | * | |
bccb48c8 | 327 | * Return: the neighbor which should be the router for this orig_node/iface. |
7351a482 SW |
328 | * |
329 | * The object is returned with refcounter increased by 1. | |
330 | */ | |
56303d34 | 331 | struct batadv_neigh_node * |
7351a482 SW |
332 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
333 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 334 | { |
7351a482 SW |
335 | struct batadv_orig_ifinfo *orig_ifinfo; |
336 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
337 | |
338 | rcu_read_lock(); | |
7351a482 SW |
339 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
340 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
341 | continue; | |
342 | ||
343 | router = rcu_dereference(orig_ifinfo->router); | |
344 | break; | |
345 | } | |
e1a5382f | 346 | |
77ae32e8 | 347 | if (router && !kref_get_unless_zero(&router->refcount)) |
e1a5382f LL |
348 | router = NULL; |
349 | ||
350 | rcu_read_unlock(); | |
351 | return router; | |
352 | } | |
353 | ||
7351a482 | 354 | /** |
7e9a8c2c | 355 | * batadv_orig_ifinfo_get() - find the ifinfo from an orig_node |
7351a482 SW |
356 | * @orig_node: the orig node to be queried |
357 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
358 | * | |
62fe710f | 359 | * Return: the requested orig_ifinfo or NULL if not found. |
7351a482 SW |
360 | * |
361 | * The object is returned with refcounter increased by 1. | |
362 | */ | |
363 | struct batadv_orig_ifinfo * | |
364 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
365 | struct batadv_hard_iface *if_outgoing) | |
366 | { | |
367 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
368 | ||
369 | rcu_read_lock(); | |
370 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
371 | list) { | |
372 | if (tmp->if_outgoing != if_outgoing) | |
373 | continue; | |
374 | ||
a6ba0d34 | 375 | if (!kref_get_unless_zero(&tmp->refcount)) |
7351a482 SW |
376 | continue; |
377 | ||
378 | orig_ifinfo = tmp; | |
379 | break; | |
380 | } | |
381 | rcu_read_unlock(); | |
382 | ||
383 | return orig_ifinfo; | |
384 | } | |
385 | ||
386 | /** | |
7e9a8c2c | 387 | * batadv_orig_ifinfo_new() - search and possibly create an orig_ifinfo object |
7351a482 SW |
388 | * @orig_node: the orig node to be queried |
389 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
390 | * | |
62fe710f | 391 | * Return: NULL in case of failure or the orig_ifinfo object for the if_outgoing |
7351a482 SW |
392 | * interface otherwise. The object is created and added to the list |
393 | * if it does not exist. | |
394 | * | |
395 | * The object is returned with refcounter increased by 1. | |
396 | */ | |
397 | struct batadv_orig_ifinfo * | |
398 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
399 | struct batadv_hard_iface *if_outgoing) | |
400 | { | |
422d2f77 | 401 | struct batadv_orig_ifinfo *orig_ifinfo; |
7351a482 SW |
402 | unsigned long reset_time; |
403 | ||
404 | spin_lock_bh(&orig_node->neigh_list_lock); | |
405 | ||
406 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
407 | if (orig_ifinfo) | |
408 | goto out; | |
409 | ||
410 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
411 | if (!orig_ifinfo) | |
412 | goto out; | |
413 | ||
17a86915 SE |
414 | if (if_outgoing != BATADV_IF_DEFAULT) |
415 | kref_get(&if_outgoing->refcount); | |
7351a482 SW |
416 | |
417 | reset_time = jiffies - 1; | |
418 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
419 | orig_ifinfo->batman_seqno_reset = reset_time; | |
420 | orig_ifinfo->if_outgoing = if_outgoing; | |
421 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
a6ba0d34 | 422 | kref_init(&orig_ifinfo->refcount); |
f257b99b | 423 | |
a6ba0d34 | 424 | kref_get(&orig_ifinfo->refcount); |
7351a482 SW |
425 | hlist_add_head_rcu(&orig_ifinfo->list, |
426 | &orig_node->ifinfo_list); | |
427 | out: | |
428 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
429 | return orig_ifinfo; | |
430 | } | |
431 | ||
89652331 | 432 | /** |
7e9a8c2c | 433 | * batadv_neigh_ifinfo_get() - find the ifinfo from an neigh_node |
e51f0397 | 434 | * @neigh: the neigh node to be queried |
89652331 SW |
435 | * @if_outgoing: the interface for which the ifinfo should be acquired |
436 | * | |
437 | * The object is returned with refcounter increased by 1. | |
438 | * | |
62fe710f | 439 | * Return: the requested neigh_ifinfo or NULL if not found |
89652331 SW |
440 | */ |
441 | struct batadv_neigh_ifinfo * | |
442 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
443 | struct batadv_hard_iface *if_outgoing) | |
444 | { | |
445 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
446 | *tmp_neigh_ifinfo; | |
447 | ||
448 | rcu_read_lock(); | |
449 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
450 | list) { | |
451 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
452 | continue; | |
453 | ||
962c6832 | 454 | if (!kref_get_unless_zero(&tmp_neigh_ifinfo->refcount)) |
89652331 SW |
455 | continue; |
456 | ||
457 | neigh_ifinfo = tmp_neigh_ifinfo; | |
458 | break; | |
459 | } | |
460 | rcu_read_unlock(); | |
461 | ||
462 | return neigh_ifinfo; | |
463 | } | |
464 | ||
465 | /** | |
7e9a8c2c | 466 | * batadv_neigh_ifinfo_new() - search and possibly create an neigh_ifinfo object |
e51f0397 | 467 | * @neigh: the neigh node to be queried |
89652331 SW |
468 | * @if_outgoing: the interface for which the ifinfo should be acquired |
469 | * | |
62fe710f | 470 | * Return: NULL in case of failure or the neigh_ifinfo object for the |
89652331 SW |
471 | * if_outgoing interface otherwise. The object is created and added to the list |
472 | * if it does not exist. | |
473 | * | |
474 | * The object is returned with refcounter increased by 1. | |
475 | */ | |
476 | struct batadv_neigh_ifinfo * | |
477 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
478 | struct batadv_hard_iface *if_outgoing) | |
479 | { | |
480 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
481 | ||
482 | spin_lock_bh(&neigh->ifinfo_lock); | |
483 | ||
484 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
485 | if (neigh_ifinfo) | |
486 | goto out; | |
487 | ||
488 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
489 | if (!neigh_ifinfo) | |
490 | goto out; | |
491 | ||
17a86915 SE |
492 | if (if_outgoing) |
493 | kref_get(&if_outgoing->refcount); | |
89652331 SW |
494 | |
495 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
962c6832 | 496 | kref_init(&neigh_ifinfo->refcount); |
89652331 SW |
497 | neigh_ifinfo->if_outgoing = if_outgoing; |
498 | ||
2e774ac2 | 499 | kref_get(&neigh_ifinfo->refcount); |
89652331 SW |
500 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); |
501 | ||
502 | out: | |
503 | spin_unlock_bh(&neigh->ifinfo_lock); | |
504 | ||
505 | return neigh_ifinfo; | |
506 | } | |
507 | ||
ed292663 | 508 | /** |
7e9a8c2c | 509 | * batadv_neigh_node_get() - retrieve a neighbour from the list |
ed292663 ML |
510 | * @orig_node: originator which the neighbour belongs to |
511 | * @hard_iface: the interface where this neighbour is connected to | |
512 | * @addr: the address of the neighbour | |
513 | * | |
514 | * Looks for and possibly returns a neighbour belonging to this originator list | |
515 | * which is connected through the provided hard interface. | |
62fe710f | 516 | * |
bccb48c8 | 517 | * Return: neighbor when found. Otherwise NULL |
ed292663 ML |
518 | */ |
519 | static struct batadv_neigh_node * | |
520 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
521 | const struct batadv_hard_iface *hard_iface, | |
522 | const u8 *addr) | |
523 | { | |
524 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
525 | ||
526 | rcu_read_lock(); | |
527 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
528 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
529 | continue; | |
530 | ||
531 | if (tmp_neigh_node->if_incoming != hard_iface) | |
532 | continue; | |
533 | ||
77ae32e8 | 534 | if (!kref_get_unless_zero(&tmp_neigh_node->refcount)) |
ed292663 ML |
535 | continue; |
536 | ||
537 | res = tmp_neigh_node; | |
538 | break; | |
539 | } | |
540 | rcu_read_unlock(); | |
541 | ||
542 | return res; | |
543 | } | |
544 | ||
cef63419 | 545 | /** |
7e9a8c2c | 546 | * batadv_hardif_neigh_create() - create a hardif neighbour node |
cef63419 ML |
547 | * @hard_iface: the interface this neighbour is connected to |
548 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 549 | * @orig_node: originator object representing the neighbour |
cef63419 | 550 | * |
62fe710f | 551 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
552 | */ |
553 | static struct batadv_hardif_neigh_node * | |
554 | batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
555 | const u8 *neigh_addr, |
556 | struct batadv_orig_node *orig_node) | |
cef63419 | 557 | { |
8248a4c7 | 558 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
422d2f77 | 559 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
560 | |
561 | spin_lock_bh(&hard_iface->neigh_list_lock); | |
562 | ||
563 | /* check if neighbor hasn't been added in the meantime */ | |
564 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
565 | if (hardif_neigh) | |
566 | goto out; | |
567 | ||
cef63419 | 568 | hardif_neigh = kzalloc(sizeof(*hardif_neigh), GFP_ATOMIC); |
17a86915 | 569 | if (!hardif_neigh) |
cef63419 | 570 | goto out; |
cef63419 | 571 | |
17a86915 | 572 | kref_get(&hard_iface->refcount); |
cef63419 ML |
573 | INIT_HLIST_NODE(&hardif_neigh->list); |
574 | ether_addr_copy(hardif_neigh->addr, neigh_addr); | |
3111beed | 575 | ether_addr_copy(hardif_neigh->orig, orig_node->orig); |
cef63419 ML |
576 | hardif_neigh->if_incoming = hard_iface; |
577 | hardif_neigh->last_seen = jiffies; | |
578 | ||
90f564df | 579 | kref_init(&hardif_neigh->refcount); |
cef63419 | 580 | |
29824a55 AQ |
581 | if (bat_priv->algo_ops->neigh.hardif_init) |
582 | bat_priv->algo_ops->neigh.hardif_init(hardif_neigh); | |
8248a4c7 | 583 | |
9ca488dd | 584 | hlist_add_head_rcu(&hardif_neigh->list, &hard_iface->neigh_list); |
cef63419 ML |
585 | |
586 | out: | |
587 | spin_unlock_bh(&hard_iface->neigh_list_lock); | |
588 | return hardif_neigh; | |
589 | } | |
590 | ||
591 | /** | |
7e9a8c2c | 592 | * batadv_hardif_neigh_get_or_create() - retrieve or create a hardif neighbour |
cef63419 ML |
593 | * node |
594 | * @hard_iface: the interface this neighbour is connected to | |
595 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 596 | * @orig_node: originator object representing the neighbour |
cef63419 | 597 | * |
62fe710f | 598 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
599 | */ |
600 | static struct batadv_hardif_neigh_node * | |
601 | batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
602 | const u8 *neigh_addr, |
603 | struct batadv_orig_node *orig_node) | |
cef63419 | 604 | { |
422d2f77 | 605 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
606 | |
607 | /* first check without locking to avoid the overhead */ | |
608 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
609 | if (hardif_neigh) | |
610 | return hardif_neigh; | |
611 | ||
3111beed | 612 | return batadv_hardif_neigh_create(hard_iface, neigh_addr, orig_node); |
cef63419 ML |
613 | } |
614 | ||
615 | /** | |
7e9a8c2c | 616 | * batadv_hardif_neigh_get() - retrieve a hardif neighbour from the list |
cef63419 ML |
617 | * @hard_iface: the interface where this neighbour is connected to |
618 | * @neigh_addr: the address of the neighbour | |
619 | * | |
620 | * Looks for and possibly returns a neighbour belonging to this hard interface. | |
62fe710f | 621 | * |
bccb48c8 | 622 | * Return: neighbor when found. Otherwise NULL |
cef63419 ML |
623 | */ |
624 | struct batadv_hardif_neigh_node * | |
625 | batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, | |
626 | const u8 *neigh_addr) | |
627 | { | |
628 | struct batadv_hardif_neigh_node *tmp_hardif_neigh, *hardif_neigh = NULL; | |
629 | ||
630 | rcu_read_lock(); | |
631 | hlist_for_each_entry_rcu(tmp_hardif_neigh, | |
632 | &hard_iface->neigh_list, list) { | |
633 | if (!batadv_compare_eth(tmp_hardif_neigh->addr, neigh_addr)) | |
634 | continue; | |
635 | ||
90f564df | 636 | if (!kref_get_unless_zero(&tmp_hardif_neigh->refcount)) |
cef63419 ML |
637 | continue; |
638 | ||
639 | hardif_neigh = tmp_hardif_neigh; | |
640 | break; | |
641 | } | |
642 | rcu_read_unlock(); | |
643 | ||
644 | return hardif_neigh; | |
645 | } | |
646 | ||
0538f759 | 647 | /** |
7e9a8c2c | 648 | * batadv_neigh_node_create() - create a neigh node object |
3f32f8a6 | 649 | * @orig_node: originator object representing the neighbour |
0538f759 AQ |
650 | * @hard_iface: the interface where the neighbour is connected to |
651 | * @neigh_addr: the mac address of the neighbour interface | |
0538f759 AQ |
652 | * |
653 | * Allocates a new neigh_node object and initialises all the generic fields. | |
62fe710f | 654 | * |
6f0a6b5e | 655 | * Return: the neighbour node if found or created or NULL otherwise. |
0538f759 | 656 | */ |
6f0a6b5e ML |
657 | static struct batadv_neigh_node * |
658 | batadv_neigh_node_create(struct batadv_orig_node *orig_node, | |
659 | struct batadv_hard_iface *hard_iface, | |
660 | const u8 *neigh_addr) | |
c6c8fea2 | 661 | { |
56303d34 | 662 | struct batadv_neigh_node *neigh_node; |
cef63419 | 663 | struct batadv_hardif_neigh_node *hardif_neigh = NULL; |
c6c8fea2 | 664 | |
e123705e LL |
665 | spin_lock_bh(&orig_node->neigh_list_lock); |
666 | ||
741aa06b ML |
667 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); |
668 | if (neigh_node) | |
669 | goto out; | |
670 | ||
cef63419 | 671 | hardif_neigh = batadv_hardif_neigh_get_or_create(hard_iface, |
3111beed | 672 | neigh_addr, orig_node); |
cef63419 ML |
673 | if (!hardif_neigh) |
674 | goto out; | |
675 | ||
704509b8 | 676 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 677 | if (!neigh_node) |
7ae8b285 | 678 | goto out; |
c6c8fea2 | 679 | |
9591a79f | 680 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
681 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
682 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 683 | |
17a86915 | 684 | kref_get(&hard_iface->refcount); |
8fdd0153 | 685 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
686 | neigh_node->if_incoming = hard_iface; |
687 | neigh_node->orig_node = orig_node; | |
e48474ed | 688 | neigh_node->last_seen = jiffies; |
0538f759 | 689 | |
abe59c65 SE |
690 | /* increment unique neighbor refcount */ |
691 | kref_get(&hardif_neigh->refcount); | |
692 | neigh_node->hardif_neigh = hardif_neigh; | |
693 | ||
1605d0d6 | 694 | /* extra reference for return */ |
77ae32e8 | 695 | kref_init(&neigh_node->refcount); |
c6c8fea2 | 696 | |
84274458 | 697 | kref_get(&neigh_node->refcount); |
741aa06b | 698 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); |
741aa06b ML |
699 | |
700 | batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv, | |
701 | "Creating new neighbor %pM for orig_node %pM on interface %s\n", | |
702 | neigh_addr, orig_node->orig, hard_iface->net_dev->name); | |
703 | ||
7ae8b285 | 704 | out: |
e123705e LL |
705 | spin_unlock_bh(&orig_node->neigh_list_lock); |
706 | ||
cef63419 | 707 | if (hardif_neigh) |
accadc35 | 708 | batadv_hardif_neigh_put(hardif_neigh); |
c6c8fea2 SE |
709 | return neigh_node; |
710 | } | |
711 | ||
6f0a6b5e | 712 | /** |
7e9a8c2c | 713 | * batadv_neigh_node_get_or_create() - retrieve or create a neigh node object |
6f0a6b5e ML |
714 | * @orig_node: originator object representing the neighbour |
715 | * @hard_iface: the interface where the neighbour is connected to | |
716 | * @neigh_addr: the mac address of the neighbour interface | |
717 | * | |
718 | * Return: the neighbour node if found or created or NULL otherwise. | |
719 | */ | |
720 | struct batadv_neigh_node * | |
721 | batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, | |
722 | struct batadv_hard_iface *hard_iface, | |
723 | const u8 *neigh_addr) | |
724 | { | |
422d2f77 | 725 | struct batadv_neigh_node *neigh_node; |
6f0a6b5e ML |
726 | |
727 | /* first check without locking to avoid the overhead */ | |
728 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); | |
729 | if (neigh_node) | |
730 | return neigh_node; | |
731 | ||
732 | return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); | |
733 | } | |
734 | ||
85cf8c85 | 735 | /** |
7e9a8c2c SE |
736 | * batadv_hardif_neigh_dump() - Dump to netlink the neighbor infos for a |
737 | * specific outgoing interface | |
85cf8c85 MS |
738 | * @msg: message to dump into |
739 | * @cb: parameters for the dump | |
740 | * | |
741 | * Return: 0 or error value | |
742 | */ | |
743 | int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
744 | { | |
745 | struct net *net = sock_net(cb->skb->sk); | |
746 | struct net_device *soft_iface; | |
747 | struct net_device *hard_iface = NULL; | |
748 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
749 | struct batadv_priv *bat_priv; | |
750 | struct batadv_hard_iface *primary_if = NULL; | |
751 | int ret; | |
752 | int ifindex, hard_ifindex; | |
753 | ||
754 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
755 | if (!ifindex) | |
756 | return -EINVAL; | |
757 | ||
758 | soft_iface = dev_get_by_index(net, ifindex); | |
759 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
760 | ret = -ENODEV; | |
761 | goto out; | |
762 | } | |
763 | ||
764 | bat_priv = netdev_priv(soft_iface); | |
765 | ||
766 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
767 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
768 | ret = -ENOENT; | |
769 | goto out; | |
770 | } | |
771 | ||
772 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
773 | BATADV_ATTR_HARD_IFINDEX); | |
774 | if (hard_ifindex) { | |
775 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
776 | if (hard_iface) | |
777 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
778 | ||
779 | if (!hardif) { | |
780 | ret = -ENODEV; | |
781 | goto out; | |
782 | } | |
783 | ||
784 | if (hardif->soft_iface != soft_iface) { | |
785 | ret = -ENOENT; | |
786 | goto out; | |
787 | } | |
788 | } | |
789 | ||
790 | if (!bat_priv->algo_ops->neigh.dump) { | |
791 | ret = -EOPNOTSUPP; | |
792 | goto out; | |
793 | } | |
794 | ||
795 | bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif); | |
796 | ||
797 | ret = msg->len; | |
798 | ||
799 | out: | |
800 | if (hardif) | |
801 | batadv_hardif_put(hardif); | |
802 | if (hard_iface) | |
803 | dev_put(hard_iface); | |
804 | if (primary_if) | |
805 | batadv_hardif_put(primary_if); | |
806 | if (soft_iface) | |
807 | dev_put(soft_iface); | |
808 | ||
809 | return ret; | |
810 | } | |
811 | ||
7351a482 | 812 | /** |
7e9a8c2c | 813 | * batadv_orig_ifinfo_release() - release orig_ifinfo from lists and queue for |
2baa753c | 814 | * free after rcu grace period |
a6ba0d34 | 815 | * @ref: kref pointer of the orig_ifinfo |
7351a482 | 816 | */ |
a6ba0d34 | 817 | static void batadv_orig_ifinfo_release(struct kref *ref) |
7351a482 | 818 | { |
a6ba0d34 | 819 | struct batadv_orig_ifinfo *orig_ifinfo; |
000c8dff | 820 | struct batadv_neigh_node *router; |
7351a482 | 821 | |
a6ba0d34 SE |
822 | orig_ifinfo = container_of(ref, struct batadv_orig_ifinfo, refcount); |
823 | ||
7351a482 | 824 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 825 | batadv_hardif_put(orig_ifinfo->if_outgoing); |
7351a482 | 826 | |
000c8dff SW |
827 | /* this is the last reference to this object */ |
828 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
829 | if (router) | |
25bb2509 | 830 | batadv_neigh_node_put(router); |
2baa753c SE |
831 | |
832 | kfree_rcu(orig_ifinfo, rcu); | |
7351a482 SW |
833 | } |
834 | ||
835 | /** | |
7e9a8c2c | 836 | * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release |
deed9660 | 837 | * the orig_ifinfo |
7351a482 SW |
838 | * @orig_ifinfo: the orig_ifinfo object to release |
839 | */ | |
35f94779 | 840 | void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) |
7351a482 | 841 | { |
a6ba0d34 | 842 | kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); |
7351a482 SW |
843 | } |
844 | ||
845 | /** | |
7e9a8c2c | 846 | * batadv_orig_node_free_rcu() - free the orig_node |
deed9660 | 847 | * @rcu: rcu pointer of the orig_node |
7351a482 | 848 | */ |
deed9660 | 849 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
7351a482 | 850 | { |
deed9660 SE |
851 | struct batadv_orig_node *orig_node; |
852 | ||
853 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); | |
854 | ||
855 | batadv_mcast_purge_orig(orig_node); | |
856 | ||
857 | batadv_frag_purge_orig(orig_node, NULL); | |
858 | ||
deed9660 SE |
859 | kfree(orig_node->tt_buff); |
860 | kfree(orig_node); | |
7351a482 SW |
861 | } |
862 | ||
deed9660 | 863 | /** |
7e9a8c2c | 864 | * batadv_orig_node_release() - release orig_node from lists and queue for |
deed9660 | 865 | * free after rcu grace period |
7c124391 | 866 | * @ref: kref pointer of the orig_node |
deed9660 | 867 | */ |
7c124391 | 868 | static void batadv_orig_node_release(struct kref *ref) |
c6c8fea2 | 869 | { |
b67bfe0d | 870 | struct hlist_node *node_tmp; |
f6c8b711 | 871 | struct batadv_neigh_node *neigh_node; |
7c124391 | 872 | struct batadv_orig_node *orig_node; |
7351a482 | 873 | struct batadv_orig_ifinfo *orig_ifinfo; |
33fbb1f3 | 874 | struct batadv_orig_node_vlan *vlan; |
cbef1e10 | 875 | struct batadv_orig_ifinfo *last_candidate; |
16b1aba8 | 876 | |
7c124391 SE |
877 | orig_node = container_of(ref, struct batadv_orig_node, refcount); |
878 | ||
f987ed6e ML |
879 | spin_lock_bh(&orig_node->neigh_list_lock); |
880 | ||
c6c8fea2 | 881 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 882 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 883 | &orig_node->neigh_list, list) { |
f987ed6e | 884 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 885 | batadv_neigh_node_put(neigh_node); |
c6c8fea2 SE |
886 | } |
887 | ||
7351a482 SW |
888 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, |
889 | &orig_node->ifinfo_list, list) { | |
890 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 891 | batadv_orig_ifinfo_put(orig_ifinfo); |
7351a482 | 892 | } |
cbef1e10 SE |
893 | |
894 | last_candidate = orig_node->last_bonding_candidate; | |
895 | orig_node->last_bonding_candidate = NULL; | |
f987ed6e ML |
896 | spin_unlock_bh(&orig_node->neigh_list_lock); |
897 | ||
cbef1e10 SE |
898 | if (last_candidate) |
899 | batadv_orig_ifinfo_put(last_candidate); | |
900 | ||
33fbb1f3 SE |
901 | spin_lock_bh(&orig_node->vlan_list_lock); |
902 | hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) { | |
903 | hlist_del_rcu(&vlan->list); | |
904 | batadv_orig_node_vlan_put(vlan); | |
905 | } | |
906 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
907 | ||
d56b1705 MH |
908 | /* Free nc_nodes */ |
909 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
910 | ||
deed9660 | 911 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
c6c8fea2 SE |
912 | } |
913 | ||
72822225 | 914 | /** |
7e9a8c2c | 915 | * batadv_orig_node_put() - decrement the orig node refcounter and possibly |
deed9660 | 916 | * release it |
72822225 LL |
917 | * @orig_node: the orig node to free |
918 | */ | |
5d967310 | 919 | void batadv_orig_node_put(struct batadv_orig_node *orig_node) |
7b36e8ee | 920 | { |
7c124391 | 921 | kref_put(&orig_node->refcount, batadv_orig_node_release); |
7b36e8ee ML |
922 | } |
923 | ||
ff15c27c SE |
924 | /** |
925 | * batadv_originator_free() - Free all originator structures | |
926 | * @bat_priv: the bat priv with all the soft interface information | |
927 | */ | |
56303d34 | 928 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 929 | { |
5bf74e9c | 930 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 931 | struct hlist_node *node_tmp; |
16b1aba8 | 932 | struct hlist_head *head; |
16b1aba8 | 933 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 934 | struct batadv_orig_node *orig_node; |
6b5e971a | 935 | u32 i; |
16b1aba8 ML |
936 | |
937 | if (!hash) | |
c6c8fea2 SE |
938 | return; |
939 | ||
940 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
941 | ||
c6c8fea2 | 942 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
943 | |
944 | for (i = 0; i < hash->size; i++) { | |
945 | head = &hash->table[i]; | |
946 | list_lock = &hash->list_locks[i]; | |
947 | ||
948 | spin_lock_bh(list_lock); | |
b67bfe0d | 949 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 950 | head, hash_entry) { |
b67bfe0d | 951 | hlist_del_rcu(&orig_node->hash_entry); |
5d967310 | 952 | batadv_orig_node_put(orig_node); |
16b1aba8 ML |
953 | } |
954 | spin_unlock_bh(list_lock); | |
955 | } | |
956 | ||
1a8eaf07 | 957 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
958 | } |
959 | ||
bbad0a5e | 960 | /** |
7e9a8c2c | 961 | * batadv_orig_node_new() - creates a new orig_node |
bbad0a5e AQ |
962 | * @bat_priv: the bat priv with all the soft interface information |
963 | * @addr: the mac address of the originator | |
964 | * | |
bccb48c8 | 965 | * Creates a new originator object and initialises all the generic fields. |
bbad0a5e | 966 | * The new object is not added to the originator list. |
62fe710f SE |
967 | * |
968 | * Return: the newly created object or NULL on failure. | |
9cfc7bd6 | 969 | */ |
bbad0a5e | 970 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
6b5e971a | 971 | const u8 *addr) |
c6c8fea2 | 972 | { |
56303d34 | 973 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 974 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 975 | unsigned long reset_time; |
bbad0a5e | 976 | int i; |
c6c8fea2 | 977 | |
39c75a51 SE |
978 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
979 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 980 | |
704509b8 | 981 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
982 | if (!orig_node) |
983 | return NULL; | |
984 | ||
9591a79f | 985 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
d0fa4f3f | 986 | INIT_HLIST_HEAD(&orig_node->vlan_list); |
7351a482 | 987 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 988 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 989 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 990 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 991 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 992 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 993 | |
d56b1705 MH |
994 | batadv_nc_init_orig(orig_node); |
995 | ||
7b36e8ee | 996 | /* extra reference for return */ |
7c124391 | 997 | kref_init(&orig_node->refcount); |
c6c8fea2 | 998 | |
16b1aba8 | 999 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 1000 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 1001 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 1002 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 1003 | orig_node->tt_buff = NULL; |
a73105b8 | 1004 | orig_node->tt_buff_len = 0; |
2c667a33 | 1005 | orig_node->last_seen = jiffies; |
42d0b044 SE |
1006 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
1007 | orig_node->bcast_seqno_reset = reset_time; | |
8a4023c5 | 1008 | |
60432d75 | 1009 | #ifdef CONFIG_BATMAN_ADV_MCAST |
61caf3d1 LL |
1010 | orig_node->mcast_flags = BATADV_MCAST_WANT_NO_RTR4; |
1011 | orig_node->mcast_flags |= BATADV_MCAST_WANT_NO_RTR6; | |
8a4023c5 LL |
1012 | INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node); |
1013 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node); | |
1014 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node); | |
1015 | spin_lock_init(&orig_node->mcast_handler_lock); | |
60432d75 | 1016 | #endif |
c6c8fea2 | 1017 | |
7ea7b4a1 AQ |
1018 | /* create a vlan object for the "untagged" LAN */ |
1019 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
1020 | if (!vlan) | |
1021 | goto free_orig_node; | |
1022 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
1023 | * Immediately release vlan since it is not needed anymore in this | |
1024 | * context | |
1025 | */ | |
21754e25 | 1026 | batadv_orig_node_vlan_put(vlan); |
7ea7b4a1 | 1027 | |
610bfc6b | 1028 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
176e5b77 | 1029 | INIT_HLIST_HEAD(&orig_node->fragments[i].fragment_list); |
610bfc6b MH |
1030 | spin_lock_init(&orig_node->fragments[i].lock); |
1031 | orig_node->fragments[i].size = 0; | |
1032 | } | |
1033 | ||
c6c8fea2 | 1034 | return orig_node; |
c6c8fea2 SE |
1035 | free_orig_node: |
1036 | kfree(orig_node); | |
1037 | return NULL; | |
1038 | } | |
1039 | ||
709de13f | 1040 | /** |
7e9a8c2c | 1041 | * batadv_purge_neigh_ifinfo() - purge obsolete ifinfo entries from neighbor |
709de13f SW |
1042 | * @bat_priv: the bat priv with all the soft interface information |
1043 | * @neigh: orig node which is to be checked | |
1044 | */ | |
1045 | static void | |
1046 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
1047 | struct batadv_neigh_node *neigh) | |
1048 | { | |
1049 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
1050 | struct batadv_hard_iface *if_outgoing; | |
1051 | struct hlist_node *node_tmp; | |
1052 | ||
1053 | spin_lock_bh(&neigh->ifinfo_lock); | |
1054 | ||
1055 | /* for all ifinfo objects for this neighinator */ | |
1056 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
1057 | &neigh->ifinfo_list, list) { | |
1058 | if_outgoing = neigh_ifinfo->if_outgoing; | |
1059 | ||
1060 | /* always keep the default interface */ | |
1061 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1062 | continue; | |
1063 | ||
1064 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1065 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1066 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1067 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
709de13f SW |
1068 | continue; |
1069 | ||
1070 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1071 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
1072 | neigh->addr, if_outgoing->net_dev->name); | |
1073 | ||
1074 | hlist_del_rcu(&neigh_ifinfo->list); | |
044fa3ae | 1075 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
709de13f SW |
1076 | } |
1077 | ||
1078 | spin_unlock_bh(&neigh->ifinfo_lock); | |
1079 | } | |
1080 | ||
7351a482 | 1081 | /** |
7e9a8c2c | 1082 | * batadv_purge_orig_ifinfo() - purge obsolete ifinfo entries from originator |
7351a482 SW |
1083 | * @bat_priv: the bat priv with all the soft interface information |
1084 | * @orig_node: orig node which is to be checked | |
1085 | * | |
62fe710f | 1086 | * Return: true if any ifinfo entry was purged, false otherwise. |
7351a482 SW |
1087 | */ |
1088 | static bool | |
1089 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
1090 | struct batadv_orig_node *orig_node) | |
1091 | { | |
1092 | struct batadv_orig_ifinfo *orig_ifinfo; | |
1093 | struct batadv_hard_iface *if_outgoing; | |
1094 | struct hlist_node *node_tmp; | |
1095 | bool ifinfo_purged = false; | |
1096 | ||
1097 | spin_lock_bh(&orig_node->neigh_list_lock); | |
1098 | ||
1099 | /* for all ifinfo objects for this originator */ | |
1100 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
1101 | &orig_node->ifinfo_list, list) { | |
1102 | if_outgoing = orig_ifinfo->if_outgoing; | |
1103 | ||
1104 | /* always keep the default interface */ | |
1105 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1106 | continue; | |
1107 | ||
1108 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1109 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1110 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1111 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
7351a482 SW |
1112 | continue; |
1113 | ||
1114 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1115 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
1116 | orig_node->orig, if_outgoing->net_dev->name); | |
1117 | ||
1118 | ifinfo_purged = true; | |
1119 | ||
1120 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 1121 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 SW |
1122 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
1123 | orig_node->last_bonding_candidate = NULL; | |
35f94779 | 1124 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 | 1125 | } |
7351a482 SW |
1126 | } |
1127 | ||
1128 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
1129 | ||
1130 | return ifinfo_purged; | |
1131 | } | |
1132 | ||
89652331 | 1133 | /** |
7e9a8c2c | 1134 | * batadv_purge_orig_neighbors() - purges neighbors from originator |
89652331 SW |
1135 | * @bat_priv: the bat priv with all the soft interface information |
1136 | * @orig_node: orig node which is to be checked | |
1137 | * | |
62fe710f | 1138 | * Return: true if any neighbor was purged, false otherwise |
89652331 | 1139 | */ |
56303d34 SE |
1140 | static bool |
1141 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 1142 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 1143 | { |
b67bfe0d | 1144 | struct hlist_node *node_tmp; |
56303d34 | 1145 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 1146 | bool neigh_purged = false; |
0b0094e0 | 1147 | unsigned long last_seen; |
56303d34 | 1148 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 1149 | |
f987ed6e ML |
1150 | spin_lock_bh(&orig_node->neigh_list_lock); |
1151 | ||
c6c8fea2 | 1152 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 1153 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 1154 | &orig_node->neigh_list, list) { |
1eda58bf SE |
1155 | last_seen = neigh_node->last_seen; |
1156 | if_incoming = neigh_node->if_incoming; | |
1157 | ||
825ffe1f SE |
1158 | if (batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT) || |
1159 | if_incoming->if_status == BATADV_IF_INACTIVE || | |
1160 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1161 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) { | |
1162 | if (if_incoming->if_status == BATADV_IF_INACTIVE || | |
1163 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1164 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) | |
39c75a51 | 1165 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1166 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
1167 | orig_node->orig, neigh_node->addr, | |
1168 | if_incoming->net_dev->name); | |
c6c8fea2 | 1169 | else |
39c75a51 | 1170 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1171 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
1172 | orig_node->orig, neigh_node->addr, | |
1173 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
1174 | |
1175 | neigh_purged = true; | |
9591a79f | 1176 | |
f987ed6e | 1177 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 1178 | batadv_neigh_node_put(neigh_node); |
709de13f SW |
1179 | } else { |
1180 | /* only necessary if not the whole neighbor is to be | |
1181 | * deleted, but some interface has been removed. | |
1182 | */ | |
1183 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
1184 | } |
1185 | } | |
f987ed6e ML |
1186 | |
1187 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
1188 | return neigh_purged; |
1189 | } | |
1190 | ||
89652331 | 1191 | /** |
7e9a8c2c | 1192 | * batadv_find_best_neighbor() - finds the best neighbor after purging |
89652331 SW |
1193 | * @bat_priv: the bat priv with all the soft interface information |
1194 | * @orig_node: orig node which is to be checked | |
1195 | * @if_outgoing: the interface for which the metric should be compared | |
1196 | * | |
62fe710f | 1197 | * Return: the current best neighbor, with refcount increased. |
89652331 SW |
1198 | */ |
1199 | static struct batadv_neigh_node * | |
1200 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
1201 | struct batadv_orig_node *orig_node, | |
1202 | struct batadv_hard_iface *if_outgoing) | |
1203 | { | |
1204 | struct batadv_neigh_node *best = NULL, *neigh; | |
29824a55 | 1205 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
89652331 SW |
1206 | |
1207 | rcu_read_lock(); | |
1208 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
29824a55 AQ |
1209 | if (best && (bao->neigh.cmp(neigh, if_outgoing, best, |
1210 | if_outgoing) <= 0)) | |
89652331 SW |
1211 | continue; |
1212 | ||
77ae32e8 | 1213 | if (!kref_get_unless_zero(&neigh->refcount)) |
89652331 SW |
1214 | continue; |
1215 | ||
1216 | if (best) | |
25bb2509 | 1217 | batadv_neigh_node_put(best); |
89652331 SW |
1218 | |
1219 | best = neigh; | |
1220 | } | |
1221 | rcu_read_unlock(); | |
1222 | ||
1223 | return best; | |
1224 | } | |
1225 | ||
7351a482 | 1226 | /** |
7e9a8c2c | 1227 | * batadv_purge_orig_node() - purges obsolete information from an orig_node |
7351a482 SW |
1228 | * @bat_priv: the bat priv with all the soft interface information |
1229 | * @orig_node: orig node which is to be checked | |
1230 | * | |
1231 | * This function checks if the orig_node or substructures of it have become | |
1232 | * obsolete, and purges this information if that's the case. | |
1233 | * | |
62fe710f | 1234 | * Return: true if the orig_node is to be removed, false otherwise. |
7351a482 | 1235 | */ |
56303d34 SE |
1236 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
1237 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 1238 | { |
56303d34 | 1239 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 1240 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 1241 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 1242 | |
42d0b044 SE |
1243 | if (batadv_has_timed_out(orig_node->last_seen, |
1244 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 1245 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1246 | "Originator timeout: originator %pM, last_seen %u\n", |
1247 | orig_node->orig, | |
1248 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 1249 | return true; |
c6c8fea2 | 1250 | } |
7b955a9f SW |
1251 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
1252 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 1253 | |
7b955a9f | 1254 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
1255 | return false; |
1256 | ||
7351a482 | 1257 | /* first for NULL ... */ |
89652331 SW |
1258 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
1259 | BATADV_IF_DEFAULT); | |
7351a482 SW |
1260 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
1261 | best_neigh_node); | |
89652331 | 1262 | if (best_neigh_node) |
25bb2509 | 1263 | batadv_neigh_node_put(best_neigh_node); |
c6c8fea2 | 1264 | |
7351a482 SW |
1265 | /* ... then for all other interfaces. */ |
1266 | rcu_read_lock(); | |
1267 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
1268 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
1269 | continue; | |
1270 | ||
1271 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
1272 | continue; | |
1273 | ||
27353446 SE |
1274 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
1275 | continue; | |
1276 | ||
7351a482 SW |
1277 | best_neigh_node = batadv_find_best_neighbor(bat_priv, |
1278 | orig_node, | |
1279 | hard_iface); | |
1280 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
1281 | best_neigh_node); | |
1282 | if (best_neigh_node) | |
25bb2509 | 1283 | batadv_neigh_node_put(best_neigh_node); |
27353446 SE |
1284 | |
1285 | batadv_hardif_put(hard_iface); | |
7351a482 SW |
1286 | } |
1287 | rcu_read_unlock(); | |
1288 | ||
c6c8fea2 SE |
1289 | return false; |
1290 | } | |
1291 | ||
3b1709de SE |
1292 | /** |
1293 | * batadv_purge_orig_ref() - Purge all outdated originators | |
1294 | * @bat_priv: the bat priv with all the soft interface information | |
1295 | */ | |
1296 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) | |
c6c8fea2 | 1297 | { |
5bf74e9c | 1298 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 1299 | struct hlist_node *node_tmp; |
c6c8fea2 | 1300 | struct hlist_head *head; |
fb778ea1 | 1301 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 1302 | struct batadv_orig_node *orig_node; |
6b5e971a | 1303 | u32 i; |
c6c8fea2 SE |
1304 | |
1305 | if (!hash) | |
1306 | return; | |
1307 | ||
c6c8fea2 SE |
1308 | /* for all origins... */ |
1309 | for (i = 0; i < hash->size; i++) { | |
1310 | head = &hash->table[i]; | |
fb778ea1 | 1311 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 1312 | |
fb778ea1 | 1313 | spin_lock_bh(list_lock); |
b67bfe0d | 1314 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 1315 | head, hash_entry) { |
03fc7f86 | 1316 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 1317 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 1318 | hlist_del_rcu(&orig_node->hash_entry); |
9d31b3ce LL |
1319 | batadv_tt_global_del_orig(orig_node->bat_priv, |
1320 | orig_node, -1, | |
1321 | "originator timed out"); | |
5d967310 | 1322 | batadv_orig_node_put(orig_node); |
fb778ea1 | 1323 | continue; |
c6c8fea2 | 1324 | } |
610bfc6b MH |
1325 | |
1326 | batadv_frag_purge_orig(orig_node, | |
1327 | batadv_frag_check_entry); | |
c6c8fea2 | 1328 | } |
fb778ea1 | 1329 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
1330 | } |
1331 | ||
7cf06bc6 | 1332 | batadv_gw_election(bat_priv); |
c6c8fea2 SE |
1333 | } |
1334 | ||
03fc7f86 | 1335 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 1336 | { |
56303d34 SE |
1337 | struct delayed_work *delayed_work; |
1338 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 1339 | |
4ba4bc0f | 1340 | delayed_work = to_delayed_work(work); |
56303d34 | 1341 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
3b1709de | 1342 | batadv_purge_orig_ref(bat_priv); |
72414442 AQ |
1343 | queue_delayed_work(batadv_event_workqueue, |
1344 | &bat_priv->orig_work, | |
1345 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1346 | } |
1347 | ||
85cf8c85 | 1348 | /** |
7e9a8c2c | 1349 | * batadv_orig_dump() - Dump to netlink the originator infos for a specific |
85cf8c85 MS |
1350 | * outgoing interface |
1351 | * @msg: message to dump into | |
1352 | * @cb: parameters for the dump | |
1353 | * | |
1354 | * Return: 0 or error value | |
1355 | */ | |
1356 | int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
1357 | { | |
1358 | struct net *net = sock_net(cb->skb->sk); | |
1359 | struct net_device *soft_iface; | |
1360 | struct net_device *hard_iface = NULL; | |
1361 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
1362 | struct batadv_priv *bat_priv; | |
1363 | struct batadv_hard_iface *primary_if = NULL; | |
1364 | int ret; | |
1365 | int ifindex, hard_ifindex; | |
1366 | ||
1367 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
1368 | if (!ifindex) | |
1369 | return -EINVAL; | |
1370 | ||
1371 | soft_iface = dev_get_by_index(net, ifindex); | |
1372 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
1373 | ret = -ENODEV; | |
1374 | goto out; | |
1375 | } | |
1376 | ||
1377 | bat_priv = netdev_priv(soft_iface); | |
1378 | ||
1379 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
1380 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
1381 | ret = -ENOENT; | |
1382 | goto out; | |
1383 | } | |
1384 | ||
1385 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
1386 | BATADV_ATTR_HARD_IFINDEX); | |
1387 | if (hard_ifindex) { | |
1388 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
1389 | if (hard_iface) | |
1390 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
1391 | ||
1392 | if (!hardif) { | |
1393 | ret = -ENODEV; | |
1394 | goto out; | |
1395 | } | |
1396 | ||
1397 | if (hardif->soft_iface != soft_iface) { | |
1398 | ret = -ENOENT; | |
1399 | goto out; | |
1400 | } | |
1401 | } | |
1402 | ||
1403 | if (!bat_priv->algo_ops->orig.dump) { | |
1404 | ret = -EOPNOTSUPP; | |
1405 | goto out; | |
1406 | } | |
1407 | ||
1408 | bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif); | |
1409 | ||
1410 | ret = msg->len; | |
1411 | ||
1412 | out: | |
1413 | if (hardif) | |
1414 | batadv_hardif_put(hardif); | |
1415 | if (hard_iface) | |
1416 | dev_put(hard_iface); | |
1417 | if (primary_if) | |
1418 | batadv_hardif_put(primary_if); | |
1419 | if (soft_iface) | |
1420 | dev_put(soft_iface); | |
1421 | ||
1422 | return ret; | |
1423 | } |