Commit | Line | Data |
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7db7d9f3 | 1 | // SPDX-License-Identifier: GPL-2.0 |
7a79d717 | 2 | /* Copyright (C) 2009-2019 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> |
1e2c2a4f | 23 | #include <linux/seq_file.h> |
85cf8c85 | 24 | #include <linux/skbuff.h> |
1e2c2a4f SE |
25 | #include <linux/slab.h> |
26 | #include <linux/spinlock.h> | |
3326afe6 | 27 | #include <linux/stddef.h> |
1e2c2a4f | 28 | #include <linux/workqueue.h> |
85cf8c85 | 29 | #include <net/sock.h> |
61caf3d1 | 30 | #include <uapi/linux/batadv_packet.h> |
85cf8c85 | 31 | #include <uapi/linux/batman_adv.h> |
1e2c2a4f | 32 | |
01d350d1 | 33 | #include "bat_algo.h" |
785ea114 | 34 | #include "distributed-arp-table.h" |
1e2c2a4f | 35 | #include "fragmentation.h" |
c6c8fea2 SE |
36 | #include "gateway_client.h" |
37 | #include "hard-interface.h" | |
1e2c2a4f | 38 | #include "hash.h" |
ba412080 | 39 | #include "log.h" |
60432d75 | 40 | #include "multicast.h" |
85cf8c85 | 41 | #include "netlink.h" |
1e2c2a4f SE |
42 | #include "network-coding.h" |
43 | #include "routing.h" | |
85cf8c85 | 44 | #include "soft-interface.h" |
1e2c2a4f | 45 | #include "translation-table.h" |
c6c8fea2 | 46 | |
dec05074 AQ |
47 | /* hash class keys */ |
48 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
49 | ||
ff15c27c SE |
50 | /** |
51 | * batadv_orig_hash_find() - Find and return originator from orig_hash | |
52 | * @bat_priv: the bat priv with all the soft interface information | |
53 | * @data: mac address of the originator | |
54 | * | |
55 | * Return: orig_node (with increased refcnt), NULL on errors | |
56 | */ | |
3326afe6 DV |
57 | struct batadv_orig_node * |
58 | batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data) | |
59 | { | |
60 | struct batadv_hashtable *hash = bat_priv->orig_hash; | |
61 | struct hlist_head *head; | |
62 | struct batadv_orig_node *orig_node, *orig_node_tmp = NULL; | |
63 | int index; | |
64 | ||
65 | if (!hash) | |
66 | return NULL; | |
67 | ||
68 | index = batadv_choose_orig(data, hash->size); | |
69 | head = &hash->table[index]; | |
70 | ||
71 | rcu_read_lock(); | |
72 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { | |
73 | if (!batadv_compare_eth(orig_node, data)) | |
74 | continue; | |
75 | ||
76 | if (!kref_get_unless_zero(&orig_node->refcount)) | |
77 | continue; | |
78 | ||
79 | orig_node_tmp = orig_node; | |
80 | break; | |
81 | } | |
82 | rcu_read_unlock(); | |
83 | ||
84 | return orig_node_tmp; | |
85 | } | |
86 | ||
03fc7f86 | 87 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 88 | |
62fe710f | 89 | /** |
7e9a8c2c | 90 | * batadv_compare_orig() - comparing function used in the originator hash table |
7afcbbef SE |
91 | * @node: node in the local table |
92 | * @data2: second object to compare the node to | |
62fe710f | 93 | * |
4b426b10 | 94 | * Return: true if they are the same originator |
62fe710f | 95 | */ |
4b426b10 | 96 | bool batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 97 | { |
56303d34 SE |
98 | const void *data1 = container_of(node, struct batadv_orig_node, |
99 | hash_entry); | |
b8e2dd13 | 100 | |
323813ed | 101 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
102 | } |
103 | ||
7ea7b4a1 | 104 | /** |
7e9a8c2c | 105 | * batadv_orig_node_vlan_get() - get an orig_node_vlan object |
7ea7b4a1 AQ |
106 | * @orig_node: the originator serving the VLAN |
107 | * @vid: the VLAN identifier | |
108 | * | |
62fe710f | 109 | * Return: the vlan object identified by vid and belonging to orig_node or NULL |
7ea7b4a1 AQ |
110 | * if it does not exist. |
111 | */ | |
112 | struct batadv_orig_node_vlan * | |
113 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
114 | unsigned short vid) | |
115 | { | |
116 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
117 | ||
118 | rcu_read_lock(); | |
d0fa4f3f | 119 | hlist_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { |
7ea7b4a1 AQ |
120 | if (tmp->vid != vid) |
121 | continue; | |
122 | ||
161a3be9 | 123 | if (!kref_get_unless_zero(&tmp->refcount)) |
7ea7b4a1 AQ |
124 | continue; |
125 | ||
126 | vlan = tmp; | |
127 | ||
128 | break; | |
129 | } | |
130 | rcu_read_unlock(); | |
131 | ||
132 | return vlan; | |
133 | } | |
134 | ||
135 | /** | |
7e9a8c2c | 136 | * batadv_orig_node_vlan_new() - search and possibly create an orig_node_vlan |
7ea7b4a1 AQ |
137 | * object |
138 | * @orig_node: the originator serving the VLAN | |
139 | * @vid: the VLAN identifier | |
140 | * | |
62fe710f | 141 | * Return: NULL in case of failure or the vlan object identified by vid and |
7ea7b4a1 AQ |
142 | * belonging to orig_node otherwise. The object is created and added to the list |
143 | * if it does not exist. | |
144 | * | |
145 | * The object is returned with refcounter increased by 1. | |
146 | */ | |
147 | struct batadv_orig_node_vlan * | |
148 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
149 | unsigned short vid) | |
150 | { | |
151 | struct batadv_orig_node_vlan *vlan; | |
152 | ||
153 | spin_lock_bh(&orig_node->vlan_list_lock); | |
154 | ||
155 | /* first look if an object for this vid already exists */ | |
156 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
157 | if (vlan) | |
158 | goto out; | |
159 | ||
160 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
161 | if (!vlan) | |
162 | goto out; | |
163 | ||
161a3be9 | 164 | kref_init(&vlan->refcount); |
7ea7b4a1 AQ |
165 | vlan->vid = vid; |
166 | ||
09537d18 | 167 | kref_get(&vlan->refcount); |
d0fa4f3f | 168 | hlist_add_head_rcu(&vlan->list, &orig_node->vlan_list); |
7ea7b4a1 AQ |
169 | |
170 | out: | |
171 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
172 | ||
173 | return vlan; | |
174 | } | |
175 | ||
176 | /** | |
7e9a8c2c | 177 | * batadv_orig_node_vlan_release() - release originator-vlan object from lists |
161a3be9 SE |
178 | * and queue for free after rcu grace period |
179 | * @ref: kref pointer of the originator-vlan object | |
180 | */ | |
181 | static void batadv_orig_node_vlan_release(struct kref *ref) | |
182 | { | |
183 | struct batadv_orig_node_vlan *orig_vlan; | |
184 | ||
185 | orig_vlan = container_of(ref, struct batadv_orig_node_vlan, refcount); | |
186 | ||
187 | kfree_rcu(orig_vlan, rcu); | |
188 | } | |
189 | ||
190 | /** | |
7e9a8c2c | 191 | * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release |
21754e25 | 192 | * the originator-vlan object |
7ea7b4a1 AQ |
193 | * @orig_vlan: the originator-vlan object to release |
194 | */ | |
21754e25 | 195 | void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) |
7ea7b4a1 | 196 | { |
161a3be9 | 197 | kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); |
7ea7b4a1 AQ |
198 | } |
199 | ||
ff15c27c SE |
200 | /** |
201 | * batadv_originator_init() - Initialize all originator structures | |
202 | * @bat_priv: the bat priv with all the soft interface information | |
203 | * | |
204 | * Return: 0 on success or negative error number in case of failure | |
205 | */ | |
56303d34 | 206 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
207 | { |
208 | if (bat_priv->orig_hash) | |
5346c35e | 209 | return 0; |
c6c8fea2 | 210 | |
1a8eaf07 | 211 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
212 | |
213 | if (!bat_priv->orig_hash) | |
214 | goto err; | |
215 | ||
dec05074 AQ |
216 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
217 | &batadv_orig_hash_lock_class_key); | |
218 | ||
72414442 AQ |
219 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
220 | queue_delayed_work(batadv_event_workqueue, | |
221 | &bat_priv->orig_work, | |
222 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
223 | ||
5346c35e | 224 | return 0; |
c6c8fea2 SE |
225 | |
226 | err: | |
5346c35e | 227 | return -ENOMEM; |
c6c8fea2 SE |
228 | } |
229 | ||
89652331 | 230 | /** |
7e9a8c2c | 231 | * batadv_neigh_ifinfo_release() - release neigh_ifinfo from lists and queue for |
ae3e1e36 | 232 | * free after rcu grace period |
962c6832 | 233 | * @ref: kref pointer of the neigh_ifinfo |
89652331 | 234 | */ |
962c6832 | 235 | static void batadv_neigh_ifinfo_release(struct kref *ref) |
89652331 | 236 | { |
962c6832 SE |
237 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
238 | ||
239 | neigh_ifinfo = container_of(ref, struct batadv_neigh_ifinfo, refcount); | |
240 | ||
ae3e1e36 | 241 | if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 242 | batadv_hardif_put(neigh_ifinfo->if_outgoing); |
ae3e1e36 SE |
243 | |
244 | kfree_rcu(neigh_ifinfo, rcu); | |
89652331 SW |
245 | } |
246 | ||
247 | /** | |
7e9a8c2c | 248 | * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release |
89652331 SW |
249 | * the neigh_ifinfo |
250 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
251 | */ | |
044fa3ae | 252 | void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) |
89652331 | 253 | { |
962c6832 | 254 | kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); |
89652331 SW |
255 | } |
256 | ||
cef63419 | 257 | /** |
7e9a8c2c | 258 | * batadv_hardif_neigh_release() - release hardif neigh node from lists and |
f6389692 | 259 | * queue for free after rcu grace period |
90f564df | 260 | * @ref: kref pointer of the neigh_node |
cef63419 | 261 | */ |
90f564df | 262 | static void batadv_hardif_neigh_release(struct kref *ref) |
cef63419 | 263 | { |
90f564df SE |
264 | struct batadv_hardif_neigh_node *hardif_neigh; |
265 | ||
266 | hardif_neigh = container_of(ref, struct batadv_hardif_neigh_node, | |
267 | refcount); | |
268 | ||
f6389692 SE |
269 | spin_lock_bh(&hardif_neigh->if_incoming->neigh_list_lock); |
270 | hlist_del_init_rcu(&hardif_neigh->list); | |
271 | spin_unlock_bh(&hardif_neigh->if_incoming->neigh_list_lock); | |
bab7c6c3 | 272 | |
82047ad7 | 273 | batadv_hardif_put(hardif_neigh->if_incoming); |
f6389692 | 274 | kfree_rcu(hardif_neigh, rcu); |
cef63419 ML |
275 | } |
276 | ||
277 | /** | |
7e9a8c2c | 278 | * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter |
f6389692 | 279 | * and possibly release it |
cef63419 ML |
280 | * @hardif_neigh: hardif neigh neighbor to free |
281 | */ | |
accadc35 | 282 | void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) |
cef63419 | 283 | { |
90f564df | 284 | kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); |
cef63419 ML |
285 | } |
286 | ||
89652331 | 287 | /** |
7e9a8c2c | 288 | * batadv_neigh_node_release() - release neigh_node from lists and queue for |
b4d922cf | 289 | * free after rcu grace period |
77ae32e8 | 290 | * @ref: kref pointer of the neigh_node |
89652331 | 291 | */ |
77ae32e8 | 292 | static void batadv_neigh_node_release(struct kref *ref) |
89652331 SW |
293 | { |
294 | struct hlist_node *node_tmp; | |
77ae32e8 | 295 | struct batadv_neigh_node *neigh_node; |
89652331 SW |
296 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
297 | ||
77ae32e8 | 298 | neigh_node = container_of(ref, struct batadv_neigh_node, refcount); |
89652331 SW |
299 | |
300 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
301 | &neigh_node->ifinfo_list, list) { | |
044fa3ae | 302 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
89652331 | 303 | } |
bcef1f3c | 304 | |
abe59c65 | 305 | batadv_hardif_neigh_put(neigh_node->hardif_neigh); |
cef63419 | 306 | |
82047ad7 | 307 | batadv_hardif_put(neigh_node->if_incoming); |
89652331 | 308 | |
b4d922cf | 309 | kfree_rcu(neigh_node, rcu); |
89652331 SW |
310 | } |
311 | ||
89652331 | 312 | /** |
7e9a8c2c | 313 | * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly |
77ae32e8 | 314 | * release it |
89652331 SW |
315 | * @neigh_node: neigh neighbor to free |
316 | */ | |
25bb2509 | 317 | void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 318 | { |
77ae32e8 | 319 | kref_put(&neigh_node->refcount, batadv_neigh_node_release); |
a4c135c5 SW |
320 | } |
321 | ||
7351a482 | 322 | /** |
7e9a8c2c | 323 | * batadv_orig_router_get() - router to the originator depending on iface |
7351a482 SW |
324 | * @orig_node: the orig node for the router |
325 | * @if_outgoing: the interface where the payload packet has been received or | |
326 | * the OGM should be sent to | |
327 | * | |
62fe710f | 328 | * Return: the neighbor which should be router for this orig_node/iface. |
7351a482 SW |
329 | * |
330 | * The object is returned with refcounter increased by 1. | |
331 | */ | |
56303d34 | 332 | struct batadv_neigh_node * |
7351a482 SW |
333 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
334 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 335 | { |
7351a482 SW |
336 | struct batadv_orig_ifinfo *orig_ifinfo; |
337 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
338 | |
339 | rcu_read_lock(); | |
7351a482 SW |
340 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
341 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
342 | continue; | |
343 | ||
344 | router = rcu_dereference(orig_ifinfo->router); | |
345 | break; | |
346 | } | |
e1a5382f | 347 | |
77ae32e8 | 348 | if (router && !kref_get_unless_zero(&router->refcount)) |
e1a5382f LL |
349 | router = NULL; |
350 | ||
351 | rcu_read_unlock(); | |
352 | return router; | |
353 | } | |
354 | ||
7351a482 | 355 | /** |
7e9a8c2c | 356 | * batadv_orig_ifinfo_get() - find the ifinfo from an orig_node |
7351a482 SW |
357 | * @orig_node: the orig node to be queried |
358 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
359 | * | |
62fe710f | 360 | * Return: the requested orig_ifinfo or NULL if not found. |
7351a482 SW |
361 | * |
362 | * The object is returned with refcounter increased by 1. | |
363 | */ | |
364 | struct batadv_orig_ifinfo * | |
365 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
366 | struct batadv_hard_iface *if_outgoing) | |
367 | { | |
368 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
369 | ||
370 | rcu_read_lock(); | |
371 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
372 | list) { | |
373 | if (tmp->if_outgoing != if_outgoing) | |
374 | continue; | |
375 | ||
a6ba0d34 | 376 | if (!kref_get_unless_zero(&tmp->refcount)) |
7351a482 SW |
377 | continue; |
378 | ||
379 | orig_ifinfo = tmp; | |
380 | break; | |
381 | } | |
382 | rcu_read_unlock(); | |
383 | ||
384 | return orig_ifinfo; | |
385 | } | |
386 | ||
387 | /** | |
7e9a8c2c | 388 | * batadv_orig_ifinfo_new() - search and possibly create an orig_ifinfo object |
7351a482 SW |
389 | * @orig_node: the orig node to be queried |
390 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
391 | * | |
62fe710f | 392 | * Return: NULL in case of failure or the orig_ifinfo object for the if_outgoing |
7351a482 SW |
393 | * interface otherwise. The object is created and added to the list |
394 | * if it does not exist. | |
395 | * | |
396 | * The object is returned with refcounter increased by 1. | |
397 | */ | |
398 | struct batadv_orig_ifinfo * | |
399 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
400 | struct batadv_hard_iface *if_outgoing) | |
401 | { | |
422d2f77 | 402 | struct batadv_orig_ifinfo *orig_ifinfo; |
7351a482 SW |
403 | unsigned long reset_time; |
404 | ||
405 | spin_lock_bh(&orig_node->neigh_list_lock); | |
406 | ||
407 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
408 | if (orig_ifinfo) | |
409 | goto out; | |
410 | ||
411 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
412 | if (!orig_ifinfo) | |
413 | goto out; | |
414 | ||
17a86915 SE |
415 | if (if_outgoing != BATADV_IF_DEFAULT) |
416 | kref_get(&if_outgoing->refcount); | |
7351a482 SW |
417 | |
418 | reset_time = jiffies - 1; | |
419 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
420 | orig_ifinfo->batman_seqno_reset = reset_time; | |
421 | orig_ifinfo->if_outgoing = if_outgoing; | |
422 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
a6ba0d34 | 423 | kref_init(&orig_ifinfo->refcount); |
f257b99b | 424 | |
a6ba0d34 | 425 | kref_get(&orig_ifinfo->refcount); |
7351a482 SW |
426 | hlist_add_head_rcu(&orig_ifinfo->list, |
427 | &orig_node->ifinfo_list); | |
428 | out: | |
429 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
430 | return orig_ifinfo; | |
431 | } | |
432 | ||
89652331 | 433 | /** |
7e9a8c2c | 434 | * batadv_neigh_ifinfo_get() - find the ifinfo from an neigh_node |
e51f0397 | 435 | * @neigh: the neigh node to be queried |
89652331 SW |
436 | * @if_outgoing: the interface for which the ifinfo should be acquired |
437 | * | |
438 | * The object is returned with refcounter increased by 1. | |
439 | * | |
62fe710f | 440 | * Return: the requested neigh_ifinfo or NULL if not found |
89652331 SW |
441 | */ |
442 | struct batadv_neigh_ifinfo * | |
443 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
444 | struct batadv_hard_iface *if_outgoing) | |
445 | { | |
446 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
447 | *tmp_neigh_ifinfo; | |
448 | ||
449 | rcu_read_lock(); | |
450 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
451 | list) { | |
452 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
453 | continue; | |
454 | ||
962c6832 | 455 | if (!kref_get_unless_zero(&tmp_neigh_ifinfo->refcount)) |
89652331 SW |
456 | continue; |
457 | ||
458 | neigh_ifinfo = tmp_neigh_ifinfo; | |
459 | break; | |
460 | } | |
461 | rcu_read_unlock(); | |
462 | ||
463 | return neigh_ifinfo; | |
464 | } | |
465 | ||
466 | /** | |
7e9a8c2c | 467 | * batadv_neigh_ifinfo_new() - search and possibly create an neigh_ifinfo object |
e51f0397 | 468 | * @neigh: the neigh node to be queried |
89652331 SW |
469 | * @if_outgoing: the interface for which the ifinfo should be acquired |
470 | * | |
62fe710f | 471 | * Return: NULL in case of failure or the neigh_ifinfo object for the |
89652331 SW |
472 | * if_outgoing interface otherwise. The object is created and added to the list |
473 | * if it does not exist. | |
474 | * | |
475 | * The object is returned with refcounter increased by 1. | |
476 | */ | |
477 | struct batadv_neigh_ifinfo * | |
478 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
479 | struct batadv_hard_iface *if_outgoing) | |
480 | { | |
481 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
482 | ||
483 | spin_lock_bh(&neigh->ifinfo_lock); | |
484 | ||
485 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
486 | if (neigh_ifinfo) | |
487 | goto out; | |
488 | ||
489 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
490 | if (!neigh_ifinfo) | |
491 | goto out; | |
492 | ||
17a86915 SE |
493 | if (if_outgoing) |
494 | kref_get(&if_outgoing->refcount); | |
89652331 SW |
495 | |
496 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
962c6832 | 497 | kref_init(&neigh_ifinfo->refcount); |
89652331 SW |
498 | neigh_ifinfo->if_outgoing = if_outgoing; |
499 | ||
2e774ac2 | 500 | kref_get(&neigh_ifinfo->refcount); |
89652331 SW |
501 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); |
502 | ||
503 | out: | |
504 | spin_unlock_bh(&neigh->ifinfo_lock); | |
505 | ||
506 | return neigh_ifinfo; | |
507 | } | |
508 | ||
ed292663 | 509 | /** |
7e9a8c2c | 510 | * batadv_neigh_node_get() - retrieve a neighbour from the list |
ed292663 ML |
511 | * @orig_node: originator which the neighbour belongs to |
512 | * @hard_iface: the interface where this neighbour is connected to | |
513 | * @addr: the address of the neighbour | |
514 | * | |
515 | * Looks for and possibly returns a neighbour belonging to this originator list | |
516 | * which is connected through the provided hard interface. | |
62fe710f SE |
517 | * |
518 | * Return: neighbor when found. Othwerwise NULL | |
ed292663 ML |
519 | */ |
520 | static struct batadv_neigh_node * | |
521 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
522 | const struct batadv_hard_iface *hard_iface, | |
523 | const u8 *addr) | |
524 | { | |
525 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
526 | ||
527 | rcu_read_lock(); | |
528 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
529 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
530 | continue; | |
531 | ||
532 | if (tmp_neigh_node->if_incoming != hard_iface) | |
533 | continue; | |
534 | ||
77ae32e8 | 535 | if (!kref_get_unless_zero(&tmp_neigh_node->refcount)) |
ed292663 ML |
536 | continue; |
537 | ||
538 | res = tmp_neigh_node; | |
539 | break; | |
540 | } | |
541 | rcu_read_unlock(); | |
542 | ||
543 | return res; | |
544 | } | |
545 | ||
cef63419 | 546 | /** |
7e9a8c2c | 547 | * batadv_hardif_neigh_create() - create a hardif neighbour node |
cef63419 ML |
548 | * @hard_iface: the interface this neighbour is connected to |
549 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 550 | * @orig_node: originator object representing the neighbour |
cef63419 | 551 | * |
62fe710f | 552 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
553 | */ |
554 | static struct batadv_hardif_neigh_node * | |
555 | batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
556 | const u8 *neigh_addr, |
557 | struct batadv_orig_node *orig_node) | |
cef63419 | 558 | { |
8248a4c7 | 559 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
422d2f77 | 560 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
561 | |
562 | spin_lock_bh(&hard_iface->neigh_list_lock); | |
563 | ||
564 | /* check if neighbor hasn't been added in the meantime */ | |
565 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
566 | if (hardif_neigh) | |
567 | goto out; | |
568 | ||
cef63419 | 569 | hardif_neigh = kzalloc(sizeof(*hardif_neigh), GFP_ATOMIC); |
17a86915 | 570 | if (!hardif_neigh) |
cef63419 | 571 | goto out; |
cef63419 | 572 | |
17a86915 | 573 | kref_get(&hard_iface->refcount); |
cef63419 ML |
574 | INIT_HLIST_NODE(&hardif_neigh->list); |
575 | ether_addr_copy(hardif_neigh->addr, neigh_addr); | |
3111beed | 576 | ether_addr_copy(hardif_neigh->orig, orig_node->orig); |
cef63419 ML |
577 | hardif_neigh->if_incoming = hard_iface; |
578 | hardif_neigh->last_seen = jiffies; | |
579 | ||
90f564df | 580 | kref_init(&hardif_neigh->refcount); |
cef63419 | 581 | |
29824a55 AQ |
582 | if (bat_priv->algo_ops->neigh.hardif_init) |
583 | bat_priv->algo_ops->neigh.hardif_init(hardif_neigh); | |
8248a4c7 | 584 | |
9ca488dd | 585 | hlist_add_head_rcu(&hardif_neigh->list, &hard_iface->neigh_list); |
cef63419 ML |
586 | |
587 | out: | |
588 | spin_unlock_bh(&hard_iface->neigh_list_lock); | |
589 | return hardif_neigh; | |
590 | } | |
591 | ||
592 | /** | |
7e9a8c2c | 593 | * batadv_hardif_neigh_get_or_create() - retrieve or create a hardif neighbour |
cef63419 ML |
594 | * node |
595 | * @hard_iface: the interface this neighbour is connected to | |
596 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 597 | * @orig_node: originator object representing the neighbour |
cef63419 | 598 | * |
62fe710f | 599 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
600 | */ |
601 | static struct batadv_hardif_neigh_node * | |
602 | batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
603 | const u8 *neigh_addr, |
604 | struct batadv_orig_node *orig_node) | |
cef63419 | 605 | { |
422d2f77 | 606 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
607 | |
608 | /* first check without locking to avoid the overhead */ | |
609 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
610 | if (hardif_neigh) | |
611 | return hardif_neigh; | |
612 | ||
3111beed | 613 | return batadv_hardif_neigh_create(hard_iface, neigh_addr, orig_node); |
cef63419 ML |
614 | } |
615 | ||
616 | /** | |
7e9a8c2c | 617 | * batadv_hardif_neigh_get() - retrieve a hardif neighbour from the list |
cef63419 ML |
618 | * @hard_iface: the interface where this neighbour is connected to |
619 | * @neigh_addr: the address of the neighbour | |
620 | * | |
621 | * Looks for and possibly returns a neighbour belonging to this hard interface. | |
62fe710f SE |
622 | * |
623 | * Return: neighbor when found. Othwerwise NULL | |
cef63419 ML |
624 | */ |
625 | struct batadv_hardif_neigh_node * | |
626 | batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, | |
627 | const u8 *neigh_addr) | |
628 | { | |
629 | struct batadv_hardif_neigh_node *tmp_hardif_neigh, *hardif_neigh = NULL; | |
630 | ||
631 | rcu_read_lock(); | |
632 | hlist_for_each_entry_rcu(tmp_hardif_neigh, | |
633 | &hard_iface->neigh_list, list) { | |
634 | if (!batadv_compare_eth(tmp_hardif_neigh->addr, neigh_addr)) | |
635 | continue; | |
636 | ||
90f564df | 637 | if (!kref_get_unless_zero(&tmp_hardif_neigh->refcount)) |
cef63419 ML |
638 | continue; |
639 | ||
640 | hardif_neigh = tmp_hardif_neigh; | |
641 | break; | |
642 | } | |
643 | rcu_read_unlock(); | |
644 | ||
645 | return hardif_neigh; | |
646 | } | |
647 | ||
0538f759 | 648 | /** |
7e9a8c2c | 649 | * batadv_neigh_node_create() - create a neigh node object |
3f32f8a6 | 650 | * @orig_node: originator object representing the neighbour |
0538f759 AQ |
651 | * @hard_iface: the interface where the neighbour is connected to |
652 | * @neigh_addr: the mac address of the neighbour interface | |
0538f759 AQ |
653 | * |
654 | * Allocates a new neigh_node object and initialises all the generic fields. | |
62fe710f | 655 | * |
6f0a6b5e | 656 | * Return: the neighbour node if found or created or NULL otherwise. |
0538f759 | 657 | */ |
6f0a6b5e ML |
658 | static struct batadv_neigh_node * |
659 | batadv_neigh_node_create(struct batadv_orig_node *orig_node, | |
660 | struct batadv_hard_iface *hard_iface, | |
661 | const u8 *neigh_addr) | |
c6c8fea2 | 662 | { |
56303d34 | 663 | struct batadv_neigh_node *neigh_node; |
cef63419 | 664 | struct batadv_hardif_neigh_node *hardif_neigh = NULL; |
c6c8fea2 | 665 | |
e123705e LL |
666 | spin_lock_bh(&orig_node->neigh_list_lock); |
667 | ||
741aa06b ML |
668 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); |
669 | if (neigh_node) | |
670 | goto out; | |
671 | ||
cef63419 | 672 | hardif_neigh = batadv_hardif_neigh_get_or_create(hard_iface, |
3111beed | 673 | neigh_addr, orig_node); |
cef63419 ML |
674 | if (!hardif_neigh) |
675 | goto out; | |
676 | ||
704509b8 | 677 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 678 | if (!neigh_node) |
7ae8b285 | 679 | goto out; |
c6c8fea2 | 680 | |
9591a79f | 681 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
682 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
683 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 684 | |
17a86915 | 685 | kref_get(&hard_iface->refcount); |
8fdd0153 | 686 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
687 | neigh_node->if_incoming = hard_iface; |
688 | neigh_node->orig_node = orig_node; | |
e48474ed | 689 | neigh_node->last_seen = jiffies; |
0538f759 | 690 | |
abe59c65 SE |
691 | /* increment unique neighbor refcount */ |
692 | kref_get(&hardif_neigh->refcount); | |
693 | neigh_node->hardif_neigh = hardif_neigh; | |
694 | ||
1605d0d6 | 695 | /* extra reference for return */ |
77ae32e8 | 696 | kref_init(&neigh_node->refcount); |
c6c8fea2 | 697 | |
84274458 | 698 | kref_get(&neigh_node->refcount); |
741aa06b | 699 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); |
741aa06b ML |
700 | |
701 | batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv, | |
702 | "Creating new neighbor %pM for orig_node %pM on interface %s\n", | |
703 | neigh_addr, orig_node->orig, hard_iface->net_dev->name); | |
704 | ||
7ae8b285 | 705 | out: |
e123705e LL |
706 | spin_unlock_bh(&orig_node->neigh_list_lock); |
707 | ||
cef63419 | 708 | if (hardif_neigh) |
accadc35 | 709 | batadv_hardif_neigh_put(hardif_neigh); |
c6c8fea2 SE |
710 | return neigh_node; |
711 | } | |
712 | ||
6f0a6b5e | 713 | /** |
7e9a8c2c | 714 | * batadv_neigh_node_get_or_create() - retrieve or create a neigh node object |
6f0a6b5e ML |
715 | * @orig_node: originator object representing the neighbour |
716 | * @hard_iface: the interface where the neighbour is connected to | |
717 | * @neigh_addr: the mac address of the neighbour interface | |
718 | * | |
719 | * Return: the neighbour node if found or created or NULL otherwise. | |
720 | */ | |
721 | struct batadv_neigh_node * | |
722 | batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, | |
723 | struct batadv_hard_iface *hard_iface, | |
724 | const u8 *neigh_addr) | |
725 | { | |
422d2f77 | 726 | struct batadv_neigh_node *neigh_node; |
6f0a6b5e ML |
727 | |
728 | /* first check without locking to avoid the overhead */ | |
729 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); | |
730 | if (neigh_node) | |
731 | return neigh_node; | |
732 | ||
733 | return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); | |
734 | } | |
735 | ||
dc1cbd14 | 736 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
7587405a | 737 | /** |
7e9a8c2c | 738 | * batadv_hardif_neigh_seq_print_text() - print the single hop neighbour list |
7587405a ML |
739 | * @seq: neighbour table seq_file struct |
740 | * @offset: not used | |
741 | * | |
62fe710f | 742 | * Return: always 0 |
7587405a ML |
743 | */ |
744 | int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) | |
745 | { | |
746 | struct net_device *net_dev = (struct net_device *)seq->private; | |
747 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
748 | struct batadv_hard_iface *primary_if; | |
749 | ||
750 | primary_if = batadv_seq_print_text_primary_if_get(seq); | |
751 | if (!primary_if) | |
752 | return 0; | |
753 | ||
754 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", | |
755 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, | |
756 | primary_if->net_dev->dev_addr, net_dev->name, | |
29824a55 | 757 | bat_priv->algo_ops->name); |
7587405a | 758 | |
82047ad7 | 759 | batadv_hardif_put(primary_if); |
7587405a | 760 | |
29824a55 | 761 | if (!bat_priv->algo_ops->neigh.print) { |
7587405a ML |
762 | seq_puts(seq, |
763 | "No printing function for this routing protocol\n"); | |
764 | return 0; | |
765 | } | |
766 | ||
29824a55 | 767 | bat_priv->algo_ops->neigh.print(bat_priv, seq); |
7587405a ML |
768 | return 0; |
769 | } | |
dc1cbd14 | 770 | #endif |
7587405a | 771 | |
85cf8c85 | 772 | /** |
7e9a8c2c SE |
773 | * batadv_hardif_neigh_dump() - Dump to netlink the neighbor infos for a |
774 | * specific outgoing interface | |
85cf8c85 MS |
775 | * @msg: message to dump into |
776 | * @cb: parameters for the dump | |
777 | * | |
778 | * Return: 0 or error value | |
779 | */ | |
780 | int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
781 | { | |
782 | struct net *net = sock_net(cb->skb->sk); | |
783 | struct net_device *soft_iface; | |
784 | struct net_device *hard_iface = NULL; | |
785 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
786 | struct batadv_priv *bat_priv; | |
787 | struct batadv_hard_iface *primary_if = NULL; | |
788 | int ret; | |
789 | int ifindex, hard_ifindex; | |
790 | ||
791 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
792 | if (!ifindex) | |
793 | return -EINVAL; | |
794 | ||
795 | soft_iface = dev_get_by_index(net, ifindex); | |
796 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
797 | ret = -ENODEV; | |
798 | goto out; | |
799 | } | |
800 | ||
801 | bat_priv = netdev_priv(soft_iface); | |
802 | ||
803 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
804 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
805 | ret = -ENOENT; | |
806 | goto out; | |
807 | } | |
808 | ||
809 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
810 | BATADV_ATTR_HARD_IFINDEX); | |
811 | if (hard_ifindex) { | |
812 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
813 | if (hard_iface) | |
814 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
815 | ||
816 | if (!hardif) { | |
817 | ret = -ENODEV; | |
818 | goto out; | |
819 | } | |
820 | ||
821 | if (hardif->soft_iface != soft_iface) { | |
822 | ret = -ENOENT; | |
823 | goto out; | |
824 | } | |
825 | } | |
826 | ||
827 | if (!bat_priv->algo_ops->neigh.dump) { | |
828 | ret = -EOPNOTSUPP; | |
829 | goto out; | |
830 | } | |
831 | ||
832 | bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif); | |
833 | ||
834 | ret = msg->len; | |
835 | ||
836 | out: | |
837 | if (hardif) | |
838 | batadv_hardif_put(hardif); | |
839 | if (hard_iface) | |
840 | dev_put(hard_iface); | |
841 | if (primary_if) | |
842 | batadv_hardif_put(primary_if); | |
843 | if (soft_iface) | |
844 | dev_put(soft_iface); | |
845 | ||
846 | return ret; | |
847 | } | |
848 | ||
7351a482 | 849 | /** |
7e9a8c2c | 850 | * batadv_orig_ifinfo_release() - release orig_ifinfo from lists and queue for |
2baa753c | 851 | * free after rcu grace period |
a6ba0d34 | 852 | * @ref: kref pointer of the orig_ifinfo |
7351a482 | 853 | */ |
a6ba0d34 | 854 | static void batadv_orig_ifinfo_release(struct kref *ref) |
7351a482 | 855 | { |
a6ba0d34 | 856 | struct batadv_orig_ifinfo *orig_ifinfo; |
000c8dff | 857 | struct batadv_neigh_node *router; |
7351a482 | 858 | |
a6ba0d34 SE |
859 | orig_ifinfo = container_of(ref, struct batadv_orig_ifinfo, refcount); |
860 | ||
7351a482 | 861 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 862 | batadv_hardif_put(orig_ifinfo->if_outgoing); |
7351a482 | 863 | |
000c8dff SW |
864 | /* this is the last reference to this object */ |
865 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
866 | if (router) | |
25bb2509 | 867 | batadv_neigh_node_put(router); |
2baa753c SE |
868 | |
869 | kfree_rcu(orig_ifinfo, rcu); | |
7351a482 SW |
870 | } |
871 | ||
872 | /** | |
7e9a8c2c | 873 | * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release |
deed9660 | 874 | * the orig_ifinfo |
7351a482 SW |
875 | * @orig_ifinfo: the orig_ifinfo object to release |
876 | */ | |
35f94779 | 877 | void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) |
7351a482 | 878 | { |
a6ba0d34 | 879 | kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); |
7351a482 SW |
880 | } |
881 | ||
882 | /** | |
7e9a8c2c | 883 | * batadv_orig_node_free_rcu() - free the orig_node |
deed9660 | 884 | * @rcu: rcu pointer of the orig_node |
7351a482 | 885 | */ |
deed9660 | 886 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
7351a482 | 887 | { |
deed9660 SE |
888 | struct batadv_orig_node *orig_node; |
889 | ||
890 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); | |
891 | ||
892 | batadv_mcast_purge_orig(orig_node); | |
893 | ||
894 | batadv_frag_purge_orig(orig_node, NULL); | |
895 | ||
deed9660 SE |
896 | kfree(orig_node->tt_buff); |
897 | kfree(orig_node); | |
7351a482 SW |
898 | } |
899 | ||
deed9660 | 900 | /** |
7e9a8c2c | 901 | * batadv_orig_node_release() - release orig_node from lists and queue for |
deed9660 | 902 | * free after rcu grace period |
7c124391 | 903 | * @ref: kref pointer of the orig_node |
deed9660 | 904 | */ |
7c124391 | 905 | static void batadv_orig_node_release(struct kref *ref) |
c6c8fea2 | 906 | { |
b67bfe0d | 907 | struct hlist_node *node_tmp; |
f6c8b711 | 908 | struct batadv_neigh_node *neigh_node; |
7c124391 | 909 | struct batadv_orig_node *orig_node; |
7351a482 | 910 | struct batadv_orig_ifinfo *orig_ifinfo; |
33fbb1f3 | 911 | struct batadv_orig_node_vlan *vlan; |
cbef1e10 | 912 | struct batadv_orig_ifinfo *last_candidate; |
16b1aba8 | 913 | |
7c124391 SE |
914 | orig_node = container_of(ref, struct batadv_orig_node, refcount); |
915 | ||
f987ed6e ML |
916 | spin_lock_bh(&orig_node->neigh_list_lock); |
917 | ||
c6c8fea2 | 918 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 919 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 920 | &orig_node->neigh_list, list) { |
f987ed6e | 921 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 922 | batadv_neigh_node_put(neigh_node); |
c6c8fea2 SE |
923 | } |
924 | ||
7351a482 SW |
925 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, |
926 | &orig_node->ifinfo_list, list) { | |
927 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 928 | batadv_orig_ifinfo_put(orig_ifinfo); |
7351a482 | 929 | } |
cbef1e10 SE |
930 | |
931 | last_candidate = orig_node->last_bonding_candidate; | |
932 | orig_node->last_bonding_candidate = NULL; | |
f987ed6e ML |
933 | spin_unlock_bh(&orig_node->neigh_list_lock); |
934 | ||
cbef1e10 SE |
935 | if (last_candidate) |
936 | batadv_orig_ifinfo_put(last_candidate); | |
937 | ||
33fbb1f3 SE |
938 | spin_lock_bh(&orig_node->vlan_list_lock); |
939 | hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) { | |
940 | hlist_del_rcu(&vlan->list); | |
941 | batadv_orig_node_vlan_put(vlan); | |
942 | } | |
943 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
944 | ||
d56b1705 MH |
945 | /* Free nc_nodes */ |
946 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
947 | ||
deed9660 | 948 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
c6c8fea2 SE |
949 | } |
950 | ||
72822225 | 951 | /** |
7e9a8c2c | 952 | * batadv_orig_node_put() - decrement the orig node refcounter and possibly |
deed9660 | 953 | * release it |
72822225 LL |
954 | * @orig_node: the orig node to free |
955 | */ | |
5d967310 | 956 | void batadv_orig_node_put(struct batadv_orig_node *orig_node) |
7b36e8ee | 957 | { |
7c124391 | 958 | kref_put(&orig_node->refcount, batadv_orig_node_release); |
7b36e8ee ML |
959 | } |
960 | ||
ff15c27c SE |
961 | /** |
962 | * batadv_originator_free() - Free all originator structures | |
963 | * @bat_priv: the bat priv with all the soft interface information | |
964 | */ | |
56303d34 | 965 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 966 | { |
5bf74e9c | 967 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 968 | struct hlist_node *node_tmp; |
16b1aba8 | 969 | struct hlist_head *head; |
16b1aba8 | 970 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 971 | struct batadv_orig_node *orig_node; |
6b5e971a | 972 | u32 i; |
16b1aba8 ML |
973 | |
974 | if (!hash) | |
c6c8fea2 SE |
975 | return; |
976 | ||
977 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
978 | ||
c6c8fea2 | 979 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
980 | |
981 | for (i = 0; i < hash->size; i++) { | |
982 | head = &hash->table[i]; | |
983 | list_lock = &hash->list_locks[i]; | |
984 | ||
985 | spin_lock_bh(list_lock); | |
b67bfe0d | 986 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 987 | head, hash_entry) { |
b67bfe0d | 988 | hlist_del_rcu(&orig_node->hash_entry); |
5d967310 | 989 | batadv_orig_node_put(orig_node); |
16b1aba8 ML |
990 | } |
991 | spin_unlock_bh(list_lock); | |
992 | } | |
993 | ||
1a8eaf07 | 994 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
995 | } |
996 | ||
bbad0a5e | 997 | /** |
7e9a8c2c | 998 | * batadv_orig_node_new() - creates a new orig_node |
bbad0a5e AQ |
999 | * @bat_priv: the bat priv with all the soft interface information |
1000 | * @addr: the mac address of the originator | |
1001 | * | |
1002 | * Creates a new originator object and initialise all the generic fields. | |
1003 | * The new object is not added to the originator list. | |
62fe710f SE |
1004 | * |
1005 | * Return: the newly created object or NULL on failure. | |
9cfc7bd6 | 1006 | */ |
bbad0a5e | 1007 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
6b5e971a | 1008 | const u8 *addr) |
c6c8fea2 | 1009 | { |
56303d34 | 1010 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 1011 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 1012 | unsigned long reset_time; |
bbad0a5e | 1013 | int i; |
c6c8fea2 | 1014 | |
39c75a51 SE |
1015 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1016 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 1017 | |
704509b8 | 1018 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
1019 | if (!orig_node) |
1020 | return NULL; | |
1021 | ||
9591a79f | 1022 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
d0fa4f3f | 1023 | INIT_HLIST_HEAD(&orig_node->vlan_list); |
7351a482 | 1024 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 1025 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 1026 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 1027 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 1028 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 1029 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 1030 | |
d56b1705 MH |
1031 | batadv_nc_init_orig(orig_node); |
1032 | ||
7b36e8ee | 1033 | /* extra reference for return */ |
7c124391 | 1034 | kref_init(&orig_node->refcount); |
c6c8fea2 | 1035 | |
16b1aba8 | 1036 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 1037 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 1038 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 1039 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 1040 | orig_node->tt_buff = NULL; |
a73105b8 | 1041 | orig_node->tt_buff_len = 0; |
2c667a33 | 1042 | orig_node->last_seen = jiffies; |
42d0b044 SE |
1043 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
1044 | orig_node->bcast_seqno_reset = reset_time; | |
8a4023c5 | 1045 | |
60432d75 | 1046 | #ifdef CONFIG_BATMAN_ADV_MCAST |
61caf3d1 LL |
1047 | orig_node->mcast_flags = BATADV_MCAST_WANT_NO_RTR4; |
1048 | orig_node->mcast_flags |= BATADV_MCAST_WANT_NO_RTR6; | |
8a4023c5 LL |
1049 | INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node); |
1050 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node); | |
1051 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node); | |
1052 | spin_lock_init(&orig_node->mcast_handler_lock); | |
60432d75 | 1053 | #endif |
c6c8fea2 | 1054 | |
7ea7b4a1 AQ |
1055 | /* create a vlan object for the "untagged" LAN */ |
1056 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
1057 | if (!vlan) | |
1058 | goto free_orig_node; | |
1059 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
1060 | * Immediately release vlan since it is not needed anymore in this | |
1061 | * context | |
1062 | */ | |
21754e25 | 1063 | batadv_orig_node_vlan_put(vlan); |
7ea7b4a1 | 1064 | |
610bfc6b | 1065 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
176e5b77 | 1066 | INIT_HLIST_HEAD(&orig_node->fragments[i].fragment_list); |
610bfc6b MH |
1067 | spin_lock_init(&orig_node->fragments[i].lock); |
1068 | orig_node->fragments[i].size = 0; | |
1069 | } | |
1070 | ||
c6c8fea2 | 1071 | return orig_node; |
c6c8fea2 SE |
1072 | free_orig_node: |
1073 | kfree(orig_node); | |
1074 | return NULL; | |
1075 | } | |
1076 | ||
709de13f | 1077 | /** |
7e9a8c2c | 1078 | * batadv_purge_neigh_ifinfo() - purge obsolete ifinfo entries from neighbor |
709de13f SW |
1079 | * @bat_priv: the bat priv with all the soft interface information |
1080 | * @neigh: orig node which is to be checked | |
1081 | */ | |
1082 | static void | |
1083 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
1084 | struct batadv_neigh_node *neigh) | |
1085 | { | |
1086 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
1087 | struct batadv_hard_iface *if_outgoing; | |
1088 | struct hlist_node *node_tmp; | |
1089 | ||
1090 | spin_lock_bh(&neigh->ifinfo_lock); | |
1091 | ||
1092 | /* for all ifinfo objects for this neighinator */ | |
1093 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
1094 | &neigh->ifinfo_list, list) { | |
1095 | if_outgoing = neigh_ifinfo->if_outgoing; | |
1096 | ||
1097 | /* always keep the default interface */ | |
1098 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1099 | continue; | |
1100 | ||
1101 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1102 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1103 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1104 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
709de13f SW |
1105 | continue; |
1106 | ||
1107 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1108 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
1109 | neigh->addr, if_outgoing->net_dev->name); | |
1110 | ||
1111 | hlist_del_rcu(&neigh_ifinfo->list); | |
044fa3ae | 1112 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
709de13f SW |
1113 | } |
1114 | ||
1115 | spin_unlock_bh(&neigh->ifinfo_lock); | |
1116 | } | |
1117 | ||
7351a482 | 1118 | /** |
7e9a8c2c | 1119 | * batadv_purge_orig_ifinfo() - purge obsolete ifinfo entries from originator |
7351a482 SW |
1120 | * @bat_priv: the bat priv with all the soft interface information |
1121 | * @orig_node: orig node which is to be checked | |
1122 | * | |
62fe710f | 1123 | * Return: true if any ifinfo entry was purged, false otherwise. |
7351a482 SW |
1124 | */ |
1125 | static bool | |
1126 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
1127 | struct batadv_orig_node *orig_node) | |
1128 | { | |
1129 | struct batadv_orig_ifinfo *orig_ifinfo; | |
1130 | struct batadv_hard_iface *if_outgoing; | |
1131 | struct hlist_node *node_tmp; | |
1132 | bool ifinfo_purged = false; | |
1133 | ||
1134 | spin_lock_bh(&orig_node->neigh_list_lock); | |
1135 | ||
1136 | /* for all ifinfo objects for this originator */ | |
1137 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
1138 | &orig_node->ifinfo_list, list) { | |
1139 | if_outgoing = orig_ifinfo->if_outgoing; | |
1140 | ||
1141 | /* always keep the default interface */ | |
1142 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1143 | continue; | |
1144 | ||
1145 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1146 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1147 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1148 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
7351a482 SW |
1149 | continue; |
1150 | ||
1151 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1152 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
1153 | orig_node->orig, if_outgoing->net_dev->name); | |
1154 | ||
1155 | ifinfo_purged = true; | |
1156 | ||
1157 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 1158 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 SW |
1159 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
1160 | orig_node->last_bonding_candidate = NULL; | |
35f94779 | 1161 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 | 1162 | } |
7351a482 SW |
1163 | } |
1164 | ||
1165 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
1166 | ||
1167 | return ifinfo_purged; | |
1168 | } | |
1169 | ||
89652331 | 1170 | /** |
7e9a8c2c | 1171 | * batadv_purge_orig_neighbors() - purges neighbors from originator |
89652331 SW |
1172 | * @bat_priv: the bat priv with all the soft interface information |
1173 | * @orig_node: orig node which is to be checked | |
1174 | * | |
62fe710f | 1175 | * Return: true if any neighbor was purged, false otherwise |
89652331 | 1176 | */ |
56303d34 SE |
1177 | static bool |
1178 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 1179 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 1180 | { |
b67bfe0d | 1181 | struct hlist_node *node_tmp; |
56303d34 | 1182 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 1183 | bool neigh_purged = false; |
0b0094e0 | 1184 | unsigned long last_seen; |
56303d34 | 1185 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 1186 | |
f987ed6e ML |
1187 | spin_lock_bh(&orig_node->neigh_list_lock); |
1188 | ||
c6c8fea2 | 1189 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 1190 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 1191 | &orig_node->neigh_list, list) { |
1eda58bf SE |
1192 | last_seen = neigh_node->last_seen; |
1193 | if_incoming = neigh_node->if_incoming; | |
1194 | ||
825ffe1f SE |
1195 | if (batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT) || |
1196 | if_incoming->if_status == BATADV_IF_INACTIVE || | |
1197 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1198 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) { | |
1199 | if (if_incoming->if_status == BATADV_IF_INACTIVE || | |
1200 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1201 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) | |
39c75a51 | 1202 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1203 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
1204 | orig_node->orig, neigh_node->addr, | |
1205 | if_incoming->net_dev->name); | |
c6c8fea2 | 1206 | else |
39c75a51 | 1207 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1208 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
1209 | orig_node->orig, neigh_node->addr, | |
1210 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
1211 | |
1212 | neigh_purged = true; | |
9591a79f | 1213 | |
f987ed6e | 1214 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 1215 | batadv_neigh_node_put(neigh_node); |
709de13f SW |
1216 | } else { |
1217 | /* only necessary if not the whole neighbor is to be | |
1218 | * deleted, but some interface has been removed. | |
1219 | */ | |
1220 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
1221 | } |
1222 | } | |
f987ed6e ML |
1223 | |
1224 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
1225 | return neigh_purged; |
1226 | } | |
1227 | ||
89652331 | 1228 | /** |
7e9a8c2c | 1229 | * batadv_find_best_neighbor() - finds the best neighbor after purging |
89652331 SW |
1230 | * @bat_priv: the bat priv with all the soft interface information |
1231 | * @orig_node: orig node which is to be checked | |
1232 | * @if_outgoing: the interface for which the metric should be compared | |
1233 | * | |
62fe710f | 1234 | * Return: the current best neighbor, with refcount increased. |
89652331 SW |
1235 | */ |
1236 | static struct batadv_neigh_node * | |
1237 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
1238 | struct batadv_orig_node *orig_node, | |
1239 | struct batadv_hard_iface *if_outgoing) | |
1240 | { | |
1241 | struct batadv_neigh_node *best = NULL, *neigh; | |
29824a55 | 1242 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
89652331 SW |
1243 | |
1244 | rcu_read_lock(); | |
1245 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
29824a55 AQ |
1246 | if (best && (bao->neigh.cmp(neigh, if_outgoing, best, |
1247 | if_outgoing) <= 0)) | |
89652331 SW |
1248 | continue; |
1249 | ||
77ae32e8 | 1250 | if (!kref_get_unless_zero(&neigh->refcount)) |
89652331 SW |
1251 | continue; |
1252 | ||
1253 | if (best) | |
25bb2509 | 1254 | batadv_neigh_node_put(best); |
89652331 SW |
1255 | |
1256 | best = neigh; | |
1257 | } | |
1258 | rcu_read_unlock(); | |
1259 | ||
1260 | return best; | |
1261 | } | |
1262 | ||
7351a482 | 1263 | /** |
7e9a8c2c | 1264 | * batadv_purge_orig_node() - purges obsolete information from an orig_node |
7351a482 SW |
1265 | * @bat_priv: the bat priv with all the soft interface information |
1266 | * @orig_node: orig node which is to be checked | |
1267 | * | |
1268 | * This function checks if the orig_node or substructures of it have become | |
1269 | * obsolete, and purges this information if that's the case. | |
1270 | * | |
62fe710f | 1271 | * Return: true if the orig_node is to be removed, false otherwise. |
7351a482 | 1272 | */ |
56303d34 SE |
1273 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
1274 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 1275 | { |
56303d34 | 1276 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 1277 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 1278 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 1279 | |
42d0b044 SE |
1280 | if (batadv_has_timed_out(orig_node->last_seen, |
1281 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 1282 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1283 | "Originator timeout: originator %pM, last_seen %u\n", |
1284 | orig_node->orig, | |
1285 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 1286 | return true; |
c6c8fea2 | 1287 | } |
7b955a9f SW |
1288 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
1289 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 1290 | |
7b955a9f | 1291 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
1292 | return false; |
1293 | ||
7351a482 | 1294 | /* first for NULL ... */ |
89652331 SW |
1295 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
1296 | BATADV_IF_DEFAULT); | |
7351a482 SW |
1297 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
1298 | best_neigh_node); | |
89652331 | 1299 | if (best_neigh_node) |
25bb2509 | 1300 | batadv_neigh_node_put(best_neigh_node); |
c6c8fea2 | 1301 | |
7351a482 SW |
1302 | /* ... then for all other interfaces. */ |
1303 | rcu_read_lock(); | |
1304 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
1305 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
1306 | continue; | |
1307 | ||
1308 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
1309 | continue; | |
1310 | ||
27353446 SE |
1311 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
1312 | continue; | |
1313 | ||
7351a482 SW |
1314 | best_neigh_node = batadv_find_best_neighbor(bat_priv, |
1315 | orig_node, | |
1316 | hard_iface); | |
1317 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
1318 | best_neigh_node); | |
1319 | if (best_neigh_node) | |
25bb2509 | 1320 | batadv_neigh_node_put(best_neigh_node); |
27353446 SE |
1321 | |
1322 | batadv_hardif_put(hard_iface); | |
7351a482 SW |
1323 | } |
1324 | rcu_read_unlock(); | |
1325 | ||
c6c8fea2 SE |
1326 | return false; |
1327 | } | |
1328 | ||
3b1709de SE |
1329 | /** |
1330 | * batadv_purge_orig_ref() - Purge all outdated originators | |
1331 | * @bat_priv: the bat priv with all the soft interface information | |
1332 | */ | |
1333 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) | |
c6c8fea2 | 1334 | { |
5bf74e9c | 1335 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 1336 | struct hlist_node *node_tmp; |
c6c8fea2 | 1337 | struct hlist_head *head; |
fb778ea1 | 1338 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 1339 | struct batadv_orig_node *orig_node; |
6b5e971a | 1340 | u32 i; |
c6c8fea2 SE |
1341 | |
1342 | if (!hash) | |
1343 | return; | |
1344 | ||
c6c8fea2 SE |
1345 | /* for all origins... */ |
1346 | for (i = 0; i < hash->size; i++) { | |
1347 | head = &hash->table[i]; | |
fb778ea1 | 1348 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 1349 | |
fb778ea1 | 1350 | spin_lock_bh(list_lock); |
b67bfe0d | 1351 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 1352 | head, hash_entry) { |
03fc7f86 | 1353 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 1354 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 1355 | hlist_del_rcu(&orig_node->hash_entry); |
9d31b3ce LL |
1356 | batadv_tt_global_del_orig(orig_node->bat_priv, |
1357 | orig_node, -1, | |
1358 | "originator timed out"); | |
5d967310 | 1359 | batadv_orig_node_put(orig_node); |
fb778ea1 | 1360 | continue; |
c6c8fea2 | 1361 | } |
610bfc6b MH |
1362 | |
1363 | batadv_frag_purge_orig(orig_node, | |
1364 | batadv_frag_check_entry); | |
c6c8fea2 | 1365 | } |
fb778ea1 | 1366 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
1367 | } |
1368 | ||
7cf06bc6 | 1369 | batadv_gw_election(bat_priv); |
c6c8fea2 SE |
1370 | } |
1371 | ||
03fc7f86 | 1372 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 1373 | { |
56303d34 SE |
1374 | struct delayed_work *delayed_work; |
1375 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 1376 | |
4ba4bc0f | 1377 | delayed_work = to_delayed_work(work); |
56303d34 | 1378 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
3b1709de | 1379 | batadv_purge_orig_ref(bat_priv); |
72414442 AQ |
1380 | queue_delayed_work(batadv_event_workqueue, |
1381 | &bat_priv->orig_work, | |
1382 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1383 | } |
1384 | ||
dc1cbd14 | 1385 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
ff15c27c SE |
1386 | |
1387 | /** | |
1388 | * batadv_orig_seq_print_text() - Print the originator table in a seq file | |
1389 | * @seq: seq file to print on | |
1390 | * @offset: not used | |
1391 | * | |
1392 | * Return: always 0 | |
1393 | */ | |
7d211efc | 1394 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
1395 | { |
1396 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 1397 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 1398 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 1399 | |
30da63a6 ML |
1400 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
1401 | if (!primary_if) | |
737a2a22 | 1402 | return 0; |
c6c8fea2 | 1403 | |
737a2a22 | 1404 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 1405 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 | 1406 | primary_if->net_dev->dev_addr, net_dev->name, |
29824a55 | 1407 | bat_priv->algo_ops->name); |
c6c8fea2 | 1408 | |
82047ad7 | 1409 | batadv_hardif_put(primary_if); |
c6c8fea2 | 1410 | |
29824a55 | 1411 | if (!bat_priv->algo_ops->orig.print) { |
737a2a22 AQ |
1412 | seq_puts(seq, |
1413 | "No printing function for this routing protocol\n"); | |
1414 | return 0; | |
c6c8fea2 SE |
1415 | } |
1416 | ||
29824a55 | 1417 | bat_priv->algo_ops->orig.print(bat_priv, seq, BATADV_IF_DEFAULT); |
c6c8fea2 | 1418 | |
30da63a6 | 1419 | return 0; |
c6c8fea2 SE |
1420 | } |
1421 | ||
cb1c92ec | 1422 | /** |
7e9a8c2c | 1423 | * batadv_orig_hardif_seq_print_text() - writes originator infos for a specific |
cb1c92ec SW |
1424 | * outgoing interface |
1425 | * @seq: debugfs table seq_file struct | |
1426 | * @offset: not used | |
1427 | * | |
62fe710f | 1428 | * Return: 0 |
cb1c92ec SW |
1429 | */ |
1430 | int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) | |
1431 | { | |
1432 | struct net_device *net_dev = (struct net_device *)seq->private; | |
1433 | struct batadv_hard_iface *hard_iface; | |
1434 | struct batadv_priv *bat_priv; | |
1435 | ||
1436 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1437 | ||
1438 | if (!hard_iface || !hard_iface->soft_iface) { | |
1439 | seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); | |
1440 | goto out; | |
1441 | } | |
1442 | ||
1443 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
29824a55 | 1444 | if (!bat_priv->algo_ops->orig.print) { |
cb1c92ec SW |
1445 | seq_puts(seq, |
1446 | "No printing function for this routing protocol\n"); | |
1447 | goto out; | |
1448 | } | |
1449 | ||
1450 | if (hard_iface->if_status != BATADV_IF_ACTIVE) { | |
1451 | seq_puts(seq, "Interface not active\n"); | |
1452 | goto out; | |
1453 | } | |
1454 | ||
1455 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", | |
1456 | BATADV_SOURCE_VERSION, hard_iface->net_dev->name, | |
1457 | hard_iface->net_dev->dev_addr, | |
29824a55 | 1458 | hard_iface->soft_iface->name, bat_priv->algo_ops->name); |
cb1c92ec | 1459 | |
29824a55 | 1460 | bat_priv->algo_ops->orig.print(bat_priv, seq, hard_iface); |
cb1c92ec SW |
1461 | |
1462 | out: | |
16a41423 | 1463 | if (hard_iface) |
82047ad7 | 1464 | batadv_hardif_put(hard_iface); |
cb1c92ec SW |
1465 | return 0; |
1466 | } | |
dc1cbd14 | 1467 | #endif |
cb1c92ec | 1468 | |
85cf8c85 | 1469 | /** |
7e9a8c2c | 1470 | * batadv_orig_dump() - Dump to netlink the originator infos for a specific |
85cf8c85 MS |
1471 | * outgoing interface |
1472 | * @msg: message to dump into | |
1473 | * @cb: parameters for the dump | |
1474 | * | |
1475 | * Return: 0 or error value | |
1476 | */ | |
1477 | int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
1478 | { | |
1479 | struct net *net = sock_net(cb->skb->sk); | |
1480 | struct net_device *soft_iface; | |
1481 | struct net_device *hard_iface = NULL; | |
1482 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
1483 | struct batadv_priv *bat_priv; | |
1484 | struct batadv_hard_iface *primary_if = NULL; | |
1485 | int ret; | |
1486 | int ifindex, hard_ifindex; | |
1487 | ||
1488 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
1489 | if (!ifindex) | |
1490 | return -EINVAL; | |
1491 | ||
1492 | soft_iface = dev_get_by_index(net, ifindex); | |
1493 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
1494 | ret = -ENODEV; | |
1495 | goto out; | |
1496 | } | |
1497 | ||
1498 | bat_priv = netdev_priv(soft_iface); | |
1499 | ||
1500 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
1501 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
1502 | ret = -ENOENT; | |
1503 | goto out; | |
1504 | } | |
1505 | ||
1506 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
1507 | BATADV_ATTR_HARD_IFINDEX); | |
1508 | if (hard_ifindex) { | |
1509 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
1510 | if (hard_iface) | |
1511 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
1512 | ||
1513 | if (!hardif) { | |
1514 | ret = -ENODEV; | |
1515 | goto out; | |
1516 | } | |
1517 | ||
1518 | if (hardif->soft_iface != soft_iface) { | |
1519 | ret = -ENOENT; | |
1520 | goto out; | |
1521 | } | |
1522 | } | |
1523 | ||
1524 | if (!bat_priv->algo_ops->orig.dump) { | |
1525 | ret = -EOPNOTSUPP; | |
1526 | goto out; | |
1527 | } | |
1528 | ||
1529 | bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif); | |
1530 | ||
1531 | ret = msg->len; | |
1532 | ||
1533 | out: | |
1534 | if (hardif) | |
1535 | batadv_hardif_put(hardif); | |
1536 | if (hard_iface) | |
1537 | dev_put(hard_iface); | |
1538 | if (primary_if) | |
1539 | batadv_hardif_put(primary_if); | |
1540 | if (soft_iface) | |
1541 | dev_put(soft_iface); | |
1542 | ||
1543 | return ret; | |
1544 | } |