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ac79cbb9 | 1 | /* Copyright (C) 2009-2017 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
2 | * |
3 | * Marek Lindner, Simon Wunderlich | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of version 2 of the GNU General Public | |
7 | * License as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
ebf38fb7 | 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
c6c8fea2 SE |
16 | */ |
17 | ||
1e2c2a4f | 18 | #include "originator.h" |
c6c8fea2 | 19 | #include "main.h" |
1e2c2a4f | 20 | |
7c124391 | 21 | #include <linux/atomic.h> |
1e2c2a4f SE |
22 | #include <linux/errno.h> |
23 | #include <linux/etherdevice.h> | |
24 | #include <linux/fs.h> | |
25 | #include <linux/jiffies.h> | |
26 | #include <linux/kernel.h> | |
90f564df | 27 | #include <linux/kref.h> |
1e2c2a4f SE |
28 | #include <linux/list.h> |
29 | #include <linux/lockdep.h> | |
30 | #include <linux/netdevice.h> | |
85cf8c85 | 31 | #include <linux/netlink.h> |
d0fa4f3f | 32 | #include <linux/rculist.h> |
3326afe6 | 33 | #include <linux/rcupdate.h> |
1e2c2a4f | 34 | #include <linux/seq_file.h> |
85cf8c85 | 35 | #include <linux/skbuff.h> |
1e2c2a4f SE |
36 | #include <linux/slab.h> |
37 | #include <linux/spinlock.h> | |
3326afe6 | 38 | #include <linux/stddef.h> |
1e2c2a4f | 39 | #include <linux/workqueue.h> |
85cf8c85 MS |
40 | #include <net/sock.h> |
41 | #include <uapi/linux/batman_adv.h> | |
1e2c2a4f | 42 | |
01d350d1 | 43 | #include "bat_algo.h" |
785ea114 | 44 | #include "distributed-arp-table.h" |
1e2c2a4f | 45 | #include "fragmentation.h" |
c6c8fea2 SE |
46 | #include "gateway_client.h" |
47 | #include "hard-interface.h" | |
1e2c2a4f | 48 | #include "hash.h" |
ba412080 | 49 | #include "log.h" |
60432d75 | 50 | #include "multicast.h" |
85cf8c85 | 51 | #include "netlink.h" |
1e2c2a4f SE |
52 | #include "network-coding.h" |
53 | #include "routing.h" | |
85cf8c85 | 54 | #include "soft-interface.h" |
1e2c2a4f | 55 | #include "translation-table.h" |
c6c8fea2 | 56 | |
dec05074 AQ |
57 | /* hash class keys */ |
58 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
59 | ||
3326afe6 DV |
60 | struct batadv_orig_node * |
61 | batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data) | |
62 | { | |
63 | struct batadv_hashtable *hash = bat_priv->orig_hash; | |
64 | struct hlist_head *head; | |
65 | struct batadv_orig_node *orig_node, *orig_node_tmp = NULL; | |
66 | int index; | |
67 | ||
68 | if (!hash) | |
69 | return NULL; | |
70 | ||
71 | index = batadv_choose_orig(data, hash->size); | |
72 | head = &hash->table[index]; | |
73 | ||
74 | rcu_read_lock(); | |
75 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { | |
76 | if (!batadv_compare_eth(orig_node, data)) | |
77 | continue; | |
78 | ||
79 | if (!kref_get_unless_zero(&orig_node->refcount)) | |
80 | continue; | |
81 | ||
82 | orig_node_tmp = orig_node; | |
83 | break; | |
84 | } | |
85 | rcu_read_unlock(); | |
86 | ||
87 | return orig_node_tmp; | |
88 | } | |
89 | ||
03fc7f86 | 90 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 91 | |
62fe710f | 92 | /** |
7afcbbef SE |
93 | * batadv_compare_orig - comparing function used in the originator hash table |
94 | * @node: node in the local table | |
95 | * @data2: second object to compare the node to | |
62fe710f | 96 | * |
4b426b10 | 97 | * Return: true if they are the same originator |
62fe710f | 98 | */ |
4b426b10 | 99 | bool batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 100 | { |
56303d34 SE |
101 | const void *data1 = container_of(node, struct batadv_orig_node, |
102 | hash_entry); | |
b8e2dd13 | 103 | |
323813ed | 104 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
105 | } |
106 | ||
7ea7b4a1 AQ |
107 | /** |
108 | * batadv_orig_node_vlan_get - get an orig_node_vlan object | |
109 | * @orig_node: the originator serving the VLAN | |
110 | * @vid: the VLAN identifier | |
111 | * | |
62fe710f | 112 | * Return: the vlan object identified by vid and belonging to orig_node or NULL |
7ea7b4a1 AQ |
113 | * if it does not exist. |
114 | */ | |
115 | struct batadv_orig_node_vlan * | |
116 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
117 | unsigned short vid) | |
118 | { | |
119 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
120 | ||
121 | rcu_read_lock(); | |
d0fa4f3f | 122 | hlist_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { |
7ea7b4a1 AQ |
123 | if (tmp->vid != vid) |
124 | continue; | |
125 | ||
161a3be9 | 126 | if (!kref_get_unless_zero(&tmp->refcount)) |
7ea7b4a1 AQ |
127 | continue; |
128 | ||
129 | vlan = tmp; | |
130 | ||
131 | break; | |
132 | } | |
133 | rcu_read_unlock(); | |
134 | ||
135 | return vlan; | |
136 | } | |
137 | ||
138 | /** | |
139 | * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan | |
140 | * object | |
141 | * @orig_node: the originator serving the VLAN | |
142 | * @vid: the VLAN identifier | |
143 | * | |
62fe710f | 144 | * Return: NULL in case of failure or the vlan object identified by vid and |
7ea7b4a1 AQ |
145 | * belonging to orig_node otherwise. The object is created and added to the list |
146 | * if it does not exist. | |
147 | * | |
148 | * The object is returned with refcounter increased by 1. | |
149 | */ | |
150 | struct batadv_orig_node_vlan * | |
151 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
152 | unsigned short vid) | |
153 | { | |
154 | struct batadv_orig_node_vlan *vlan; | |
155 | ||
156 | spin_lock_bh(&orig_node->vlan_list_lock); | |
157 | ||
158 | /* first look if an object for this vid already exists */ | |
159 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
160 | if (vlan) | |
161 | goto out; | |
162 | ||
163 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
164 | if (!vlan) | |
165 | goto out; | |
166 | ||
161a3be9 | 167 | kref_init(&vlan->refcount); |
7ea7b4a1 AQ |
168 | vlan->vid = vid; |
169 | ||
09537d18 | 170 | kref_get(&vlan->refcount); |
d0fa4f3f | 171 | hlist_add_head_rcu(&vlan->list, &orig_node->vlan_list); |
7ea7b4a1 AQ |
172 | |
173 | out: | |
174 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
175 | ||
176 | return vlan; | |
177 | } | |
178 | ||
179 | /** | |
161a3be9 SE |
180 | * batadv_orig_node_vlan_release - release originator-vlan object from lists |
181 | * and queue for free after rcu grace period | |
182 | * @ref: kref pointer of the originator-vlan object | |
183 | */ | |
184 | static void batadv_orig_node_vlan_release(struct kref *ref) | |
185 | { | |
186 | struct batadv_orig_node_vlan *orig_vlan; | |
187 | ||
188 | orig_vlan = container_of(ref, struct batadv_orig_node_vlan, refcount); | |
189 | ||
190 | kfree_rcu(orig_vlan, rcu); | |
191 | } | |
192 | ||
193 | /** | |
21754e25 SE |
194 | * batadv_orig_node_vlan_put - decrement the refcounter and possibly release |
195 | * the originator-vlan object | |
7ea7b4a1 AQ |
196 | * @orig_vlan: the originator-vlan object to release |
197 | */ | |
21754e25 | 198 | void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) |
7ea7b4a1 | 199 | { |
161a3be9 | 200 | kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); |
7ea7b4a1 AQ |
201 | } |
202 | ||
56303d34 | 203 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
204 | { |
205 | if (bat_priv->orig_hash) | |
5346c35e | 206 | return 0; |
c6c8fea2 | 207 | |
1a8eaf07 | 208 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
209 | |
210 | if (!bat_priv->orig_hash) | |
211 | goto err; | |
212 | ||
dec05074 AQ |
213 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
214 | &batadv_orig_hash_lock_class_key); | |
215 | ||
72414442 AQ |
216 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
217 | queue_delayed_work(batadv_event_workqueue, | |
218 | &bat_priv->orig_work, | |
219 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
220 | ||
5346c35e | 221 | return 0; |
c6c8fea2 SE |
222 | |
223 | err: | |
5346c35e | 224 | return -ENOMEM; |
c6c8fea2 SE |
225 | } |
226 | ||
89652331 | 227 | /** |
ae3e1e36 SE |
228 | * batadv_neigh_ifinfo_release - release neigh_ifinfo from lists and queue for |
229 | * free after rcu grace period | |
962c6832 | 230 | * @ref: kref pointer of the neigh_ifinfo |
89652331 | 231 | */ |
962c6832 | 232 | static void batadv_neigh_ifinfo_release(struct kref *ref) |
89652331 | 233 | { |
962c6832 SE |
234 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
235 | ||
236 | neigh_ifinfo = container_of(ref, struct batadv_neigh_ifinfo, refcount); | |
237 | ||
ae3e1e36 | 238 | if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 239 | batadv_hardif_put(neigh_ifinfo->if_outgoing); |
ae3e1e36 SE |
240 | |
241 | kfree_rcu(neigh_ifinfo, rcu); | |
89652331 SW |
242 | } |
243 | ||
244 | /** | |
044fa3ae | 245 | * batadv_neigh_ifinfo_put - decrement the refcounter and possibly release |
89652331 SW |
246 | * the neigh_ifinfo |
247 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
248 | */ | |
044fa3ae | 249 | void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) |
89652331 | 250 | { |
962c6832 | 251 | kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); |
89652331 SW |
252 | } |
253 | ||
cef63419 | 254 | /** |
f6389692 SE |
255 | * batadv_hardif_neigh_release - release hardif neigh node from lists and |
256 | * queue for free after rcu grace period | |
90f564df | 257 | * @ref: kref pointer of the neigh_node |
cef63419 | 258 | */ |
90f564df | 259 | static void batadv_hardif_neigh_release(struct kref *ref) |
cef63419 | 260 | { |
90f564df SE |
261 | struct batadv_hardif_neigh_node *hardif_neigh; |
262 | ||
263 | hardif_neigh = container_of(ref, struct batadv_hardif_neigh_node, | |
264 | refcount); | |
265 | ||
f6389692 SE |
266 | spin_lock_bh(&hardif_neigh->if_incoming->neigh_list_lock); |
267 | hlist_del_init_rcu(&hardif_neigh->list); | |
268 | spin_unlock_bh(&hardif_neigh->if_incoming->neigh_list_lock); | |
bab7c6c3 | 269 | |
82047ad7 | 270 | batadv_hardif_put(hardif_neigh->if_incoming); |
f6389692 | 271 | kfree_rcu(hardif_neigh, rcu); |
cef63419 ML |
272 | } |
273 | ||
274 | /** | |
accadc35 | 275 | * batadv_hardif_neigh_put - decrement the hardif neighbors refcounter |
f6389692 | 276 | * and possibly release it |
cef63419 ML |
277 | * @hardif_neigh: hardif neigh neighbor to free |
278 | */ | |
accadc35 | 279 | void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) |
cef63419 | 280 | { |
90f564df | 281 | kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); |
cef63419 ML |
282 | } |
283 | ||
89652331 | 284 | /** |
b4d922cf SE |
285 | * batadv_neigh_node_release - release neigh_node from lists and queue for |
286 | * free after rcu grace period | |
77ae32e8 | 287 | * @ref: kref pointer of the neigh_node |
89652331 | 288 | */ |
77ae32e8 | 289 | static void batadv_neigh_node_release(struct kref *ref) |
89652331 SW |
290 | { |
291 | struct hlist_node *node_tmp; | |
77ae32e8 | 292 | struct batadv_neigh_node *neigh_node; |
89652331 SW |
293 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
294 | ||
77ae32e8 | 295 | neigh_node = container_of(ref, struct batadv_neigh_node, refcount); |
89652331 SW |
296 | |
297 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
298 | &neigh_node->ifinfo_list, list) { | |
044fa3ae | 299 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
89652331 | 300 | } |
bcef1f3c | 301 | |
abe59c65 | 302 | batadv_hardif_neigh_put(neigh_node->hardif_neigh); |
cef63419 | 303 | |
82047ad7 | 304 | batadv_hardif_put(neigh_node->if_incoming); |
89652331 | 305 | |
b4d922cf | 306 | kfree_rcu(neigh_node, rcu); |
89652331 SW |
307 | } |
308 | ||
89652331 | 309 | /** |
25bb2509 | 310 | * batadv_neigh_node_put - decrement the neighbors refcounter and possibly |
77ae32e8 | 311 | * release it |
89652331 SW |
312 | * @neigh_node: neigh neighbor to free |
313 | */ | |
25bb2509 | 314 | void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 315 | { |
77ae32e8 | 316 | kref_put(&neigh_node->refcount, batadv_neigh_node_release); |
a4c135c5 SW |
317 | } |
318 | ||
7351a482 | 319 | /** |
6d030de8 | 320 | * batadv_orig_router_get - router to the originator depending on iface |
7351a482 SW |
321 | * @orig_node: the orig node for the router |
322 | * @if_outgoing: the interface where the payload packet has been received or | |
323 | * the OGM should be sent to | |
324 | * | |
62fe710f | 325 | * Return: the neighbor which should be router for this orig_node/iface. |
7351a482 SW |
326 | * |
327 | * The object is returned with refcounter increased by 1. | |
328 | */ | |
56303d34 | 329 | struct batadv_neigh_node * |
7351a482 SW |
330 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
331 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 332 | { |
7351a482 SW |
333 | struct batadv_orig_ifinfo *orig_ifinfo; |
334 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
335 | |
336 | rcu_read_lock(); | |
7351a482 SW |
337 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
338 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
339 | continue; | |
340 | ||
341 | router = rcu_dereference(orig_ifinfo->router); | |
342 | break; | |
343 | } | |
e1a5382f | 344 | |
77ae32e8 | 345 | if (router && !kref_get_unless_zero(&router->refcount)) |
e1a5382f LL |
346 | router = NULL; |
347 | ||
348 | rcu_read_unlock(); | |
349 | return router; | |
350 | } | |
351 | ||
7351a482 SW |
352 | /** |
353 | * batadv_orig_ifinfo_get - find the ifinfo from an orig_node | |
354 | * @orig_node: the orig node to be queried | |
355 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
356 | * | |
62fe710f | 357 | * Return: the requested orig_ifinfo or NULL if not found. |
7351a482 SW |
358 | * |
359 | * The object is returned with refcounter increased by 1. | |
360 | */ | |
361 | struct batadv_orig_ifinfo * | |
362 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
363 | struct batadv_hard_iface *if_outgoing) | |
364 | { | |
365 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
366 | ||
367 | rcu_read_lock(); | |
368 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
369 | list) { | |
370 | if (tmp->if_outgoing != if_outgoing) | |
371 | continue; | |
372 | ||
a6ba0d34 | 373 | if (!kref_get_unless_zero(&tmp->refcount)) |
7351a482 SW |
374 | continue; |
375 | ||
376 | orig_ifinfo = tmp; | |
377 | break; | |
378 | } | |
379 | rcu_read_unlock(); | |
380 | ||
381 | return orig_ifinfo; | |
382 | } | |
383 | ||
384 | /** | |
385 | * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object | |
386 | * @orig_node: the orig node to be queried | |
387 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
388 | * | |
62fe710f | 389 | * Return: NULL in case of failure or the orig_ifinfo object for the if_outgoing |
7351a482 SW |
390 | * interface otherwise. The object is created and added to the list |
391 | * if it does not exist. | |
392 | * | |
393 | * The object is returned with refcounter increased by 1. | |
394 | */ | |
395 | struct batadv_orig_ifinfo * | |
396 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
397 | struct batadv_hard_iface *if_outgoing) | |
398 | { | |
422d2f77 | 399 | struct batadv_orig_ifinfo *orig_ifinfo; |
7351a482 SW |
400 | unsigned long reset_time; |
401 | ||
402 | spin_lock_bh(&orig_node->neigh_list_lock); | |
403 | ||
404 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
405 | if (orig_ifinfo) | |
406 | goto out; | |
407 | ||
408 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
409 | if (!orig_ifinfo) | |
410 | goto out; | |
411 | ||
17a86915 SE |
412 | if (if_outgoing != BATADV_IF_DEFAULT) |
413 | kref_get(&if_outgoing->refcount); | |
7351a482 SW |
414 | |
415 | reset_time = jiffies - 1; | |
416 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
417 | orig_ifinfo->batman_seqno_reset = reset_time; | |
418 | orig_ifinfo->if_outgoing = if_outgoing; | |
419 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
a6ba0d34 | 420 | kref_init(&orig_ifinfo->refcount); |
f257b99b | 421 | |
a6ba0d34 | 422 | kref_get(&orig_ifinfo->refcount); |
7351a482 SW |
423 | hlist_add_head_rcu(&orig_ifinfo->list, |
424 | &orig_node->ifinfo_list); | |
425 | out: | |
426 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
427 | return orig_ifinfo; | |
428 | } | |
429 | ||
89652331 SW |
430 | /** |
431 | * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node | |
e51f0397 | 432 | * @neigh: the neigh node to be queried |
89652331 SW |
433 | * @if_outgoing: the interface for which the ifinfo should be acquired |
434 | * | |
435 | * The object is returned with refcounter increased by 1. | |
436 | * | |
62fe710f | 437 | * Return: the requested neigh_ifinfo or NULL if not found |
89652331 SW |
438 | */ |
439 | struct batadv_neigh_ifinfo * | |
440 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
441 | struct batadv_hard_iface *if_outgoing) | |
442 | { | |
443 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
444 | *tmp_neigh_ifinfo; | |
445 | ||
446 | rcu_read_lock(); | |
447 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
448 | list) { | |
449 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
450 | continue; | |
451 | ||
962c6832 | 452 | if (!kref_get_unless_zero(&tmp_neigh_ifinfo->refcount)) |
89652331 SW |
453 | continue; |
454 | ||
455 | neigh_ifinfo = tmp_neigh_ifinfo; | |
456 | break; | |
457 | } | |
458 | rcu_read_unlock(); | |
459 | ||
460 | return neigh_ifinfo; | |
461 | } | |
462 | ||
463 | /** | |
464 | * batadv_neigh_ifinfo_new - search and possibly create an neigh_ifinfo object | |
e51f0397 | 465 | * @neigh: the neigh node to be queried |
89652331 SW |
466 | * @if_outgoing: the interface for which the ifinfo should be acquired |
467 | * | |
62fe710f | 468 | * Return: NULL in case of failure or the neigh_ifinfo object for the |
89652331 SW |
469 | * if_outgoing interface otherwise. The object is created and added to the list |
470 | * if it does not exist. | |
471 | * | |
472 | * The object is returned with refcounter increased by 1. | |
473 | */ | |
474 | struct batadv_neigh_ifinfo * | |
475 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
476 | struct batadv_hard_iface *if_outgoing) | |
477 | { | |
478 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
479 | ||
480 | spin_lock_bh(&neigh->ifinfo_lock); | |
481 | ||
482 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
483 | if (neigh_ifinfo) | |
484 | goto out; | |
485 | ||
486 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
487 | if (!neigh_ifinfo) | |
488 | goto out; | |
489 | ||
17a86915 SE |
490 | if (if_outgoing) |
491 | kref_get(&if_outgoing->refcount); | |
89652331 SW |
492 | |
493 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
962c6832 | 494 | kref_init(&neigh_ifinfo->refcount); |
89652331 SW |
495 | neigh_ifinfo->if_outgoing = if_outgoing; |
496 | ||
2e774ac2 | 497 | kref_get(&neigh_ifinfo->refcount); |
89652331 SW |
498 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); |
499 | ||
500 | out: | |
501 | spin_unlock_bh(&neigh->ifinfo_lock); | |
502 | ||
503 | return neigh_ifinfo; | |
504 | } | |
505 | ||
ed292663 ML |
506 | /** |
507 | * batadv_neigh_node_get - retrieve a neighbour from the list | |
508 | * @orig_node: originator which the neighbour belongs to | |
509 | * @hard_iface: the interface where this neighbour is connected to | |
510 | * @addr: the address of the neighbour | |
511 | * | |
512 | * Looks for and possibly returns a neighbour belonging to this originator list | |
513 | * which is connected through the provided hard interface. | |
62fe710f SE |
514 | * |
515 | * Return: neighbor when found. Othwerwise NULL | |
ed292663 ML |
516 | */ |
517 | static struct batadv_neigh_node * | |
518 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
519 | const struct batadv_hard_iface *hard_iface, | |
520 | const u8 *addr) | |
521 | { | |
522 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
523 | ||
524 | rcu_read_lock(); | |
525 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
526 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
527 | continue; | |
528 | ||
529 | if (tmp_neigh_node->if_incoming != hard_iface) | |
530 | continue; | |
531 | ||
77ae32e8 | 532 | if (!kref_get_unless_zero(&tmp_neigh_node->refcount)) |
ed292663 ML |
533 | continue; |
534 | ||
535 | res = tmp_neigh_node; | |
536 | break; | |
537 | } | |
538 | rcu_read_unlock(); | |
539 | ||
540 | return res; | |
541 | } | |
542 | ||
cef63419 ML |
543 | /** |
544 | * batadv_hardif_neigh_create - create a hardif neighbour node | |
545 | * @hard_iface: the interface this neighbour is connected to | |
546 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 547 | * @orig_node: originator object representing the neighbour |
cef63419 | 548 | * |
62fe710f | 549 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
550 | */ |
551 | static struct batadv_hardif_neigh_node * | |
552 | batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
553 | const u8 *neigh_addr, |
554 | struct batadv_orig_node *orig_node) | |
cef63419 | 555 | { |
8248a4c7 | 556 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
422d2f77 | 557 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
558 | |
559 | spin_lock_bh(&hard_iface->neigh_list_lock); | |
560 | ||
561 | /* check if neighbor hasn't been added in the meantime */ | |
562 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
563 | if (hardif_neigh) | |
564 | goto out; | |
565 | ||
cef63419 | 566 | hardif_neigh = kzalloc(sizeof(*hardif_neigh), GFP_ATOMIC); |
17a86915 | 567 | if (!hardif_neigh) |
cef63419 | 568 | goto out; |
cef63419 | 569 | |
17a86915 | 570 | kref_get(&hard_iface->refcount); |
cef63419 ML |
571 | INIT_HLIST_NODE(&hardif_neigh->list); |
572 | ether_addr_copy(hardif_neigh->addr, neigh_addr); | |
3111beed | 573 | ether_addr_copy(hardif_neigh->orig, orig_node->orig); |
cef63419 ML |
574 | hardif_neigh->if_incoming = hard_iface; |
575 | hardif_neigh->last_seen = jiffies; | |
576 | ||
90f564df | 577 | kref_init(&hardif_neigh->refcount); |
cef63419 | 578 | |
29824a55 AQ |
579 | if (bat_priv->algo_ops->neigh.hardif_init) |
580 | bat_priv->algo_ops->neigh.hardif_init(hardif_neigh); | |
8248a4c7 | 581 | |
9ca488dd | 582 | hlist_add_head_rcu(&hardif_neigh->list, &hard_iface->neigh_list); |
cef63419 ML |
583 | |
584 | out: | |
585 | spin_unlock_bh(&hard_iface->neigh_list_lock); | |
586 | return hardif_neigh; | |
587 | } | |
588 | ||
589 | /** | |
590 | * batadv_hardif_neigh_get_or_create - retrieve or create a hardif neighbour | |
591 | * node | |
592 | * @hard_iface: the interface this neighbour is connected to | |
593 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 594 | * @orig_node: originator object representing the neighbour |
cef63419 | 595 | * |
62fe710f | 596 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
597 | */ |
598 | static struct batadv_hardif_neigh_node * | |
599 | batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
600 | const u8 *neigh_addr, |
601 | struct batadv_orig_node *orig_node) | |
cef63419 | 602 | { |
422d2f77 | 603 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
604 | |
605 | /* first check without locking to avoid the overhead */ | |
606 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
607 | if (hardif_neigh) | |
608 | return hardif_neigh; | |
609 | ||
3111beed | 610 | return batadv_hardif_neigh_create(hard_iface, neigh_addr, orig_node); |
cef63419 ML |
611 | } |
612 | ||
613 | /** | |
614 | * batadv_hardif_neigh_get - retrieve a hardif neighbour from the list | |
615 | * @hard_iface: the interface where this neighbour is connected to | |
616 | * @neigh_addr: the address of the neighbour | |
617 | * | |
618 | * Looks for and possibly returns a neighbour belonging to this hard interface. | |
62fe710f SE |
619 | * |
620 | * Return: neighbor when found. Othwerwise NULL | |
cef63419 ML |
621 | */ |
622 | struct batadv_hardif_neigh_node * | |
623 | batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, | |
624 | const u8 *neigh_addr) | |
625 | { | |
626 | struct batadv_hardif_neigh_node *tmp_hardif_neigh, *hardif_neigh = NULL; | |
627 | ||
628 | rcu_read_lock(); | |
629 | hlist_for_each_entry_rcu(tmp_hardif_neigh, | |
630 | &hard_iface->neigh_list, list) { | |
631 | if (!batadv_compare_eth(tmp_hardif_neigh->addr, neigh_addr)) | |
632 | continue; | |
633 | ||
90f564df | 634 | if (!kref_get_unless_zero(&tmp_hardif_neigh->refcount)) |
cef63419 ML |
635 | continue; |
636 | ||
637 | hardif_neigh = tmp_hardif_neigh; | |
638 | break; | |
639 | } | |
640 | rcu_read_unlock(); | |
641 | ||
642 | return hardif_neigh; | |
643 | } | |
644 | ||
0538f759 | 645 | /** |
6f0a6b5e | 646 | * batadv_neigh_node_create - create a neigh node object |
3f32f8a6 | 647 | * @orig_node: originator object representing the neighbour |
0538f759 AQ |
648 | * @hard_iface: the interface where the neighbour is connected to |
649 | * @neigh_addr: the mac address of the neighbour interface | |
0538f759 AQ |
650 | * |
651 | * Allocates a new neigh_node object and initialises all the generic fields. | |
62fe710f | 652 | * |
6f0a6b5e | 653 | * Return: the neighbour node if found or created or NULL otherwise. |
0538f759 | 654 | */ |
6f0a6b5e ML |
655 | static struct batadv_neigh_node * |
656 | batadv_neigh_node_create(struct batadv_orig_node *orig_node, | |
657 | struct batadv_hard_iface *hard_iface, | |
658 | const u8 *neigh_addr) | |
c6c8fea2 | 659 | { |
56303d34 | 660 | struct batadv_neigh_node *neigh_node; |
cef63419 | 661 | struct batadv_hardif_neigh_node *hardif_neigh = NULL; |
c6c8fea2 | 662 | |
e123705e LL |
663 | spin_lock_bh(&orig_node->neigh_list_lock); |
664 | ||
741aa06b ML |
665 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); |
666 | if (neigh_node) | |
667 | goto out; | |
668 | ||
cef63419 | 669 | hardif_neigh = batadv_hardif_neigh_get_or_create(hard_iface, |
3111beed | 670 | neigh_addr, orig_node); |
cef63419 ML |
671 | if (!hardif_neigh) |
672 | goto out; | |
673 | ||
704509b8 | 674 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 675 | if (!neigh_node) |
7ae8b285 | 676 | goto out; |
c6c8fea2 | 677 | |
9591a79f | 678 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
679 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
680 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 681 | |
17a86915 | 682 | kref_get(&hard_iface->refcount); |
8fdd0153 | 683 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
684 | neigh_node->if_incoming = hard_iface; |
685 | neigh_node->orig_node = orig_node; | |
e48474ed | 686 | neigh_node->last_seen = jiffies; |
0538f759 | 687 | |
abe59c65 SE |
688 | /* increment unique neighbor refcount */ |
689 | kref_get(&hardif_neigh->refcount); | |
690 | neigh_node->hardif_neigh = hardif_neigh; | |
691 | ||
1605d0d6 | 692 | /* extra reference for return */ |
77ae32e8 | 693 | kref_init(&neigh_node->refcount); |
c6c8fea2 | 694 | |
84274458 | 695 | kref_get(&neigh_node->refcount); |
741aa06b | 696 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); |
741aa06b ML |
697 | |
698 | batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv, | |
699 | "Creating new neighbor %pM for orig_node %pM on interface %s\n", | |
700 | neigh_addr, orig_node->orig, hard_iface->net_dev->name); | |
701 | ||
7ae8b285 | 702 | out: |
e123705e LL |
703 | spin_unlock_bh(&orig_node->neigh_list_lock); |
704 | ||
cef63419 | 705 | if (hardif_neigh) |
accadc35 | 706 | batadv_hardif_neigh_put(hardif_neigh); |
c6c8fea2 SE |
707 | return neigh_node; |
708 | } | |
709 | ||
6f0a6b5e ML |
710 | /** |
711 | * batadv_neigh_node_get_or_create - retrieve or create a neigh node object | |
712 | * @orig_node: originator object representing the neighbour | |
713 | * @hard_iface: the interface where the neighbour is connected to | |
714 | * @neigh_addr: the mac address of the neighbour interface | |
715 | * | |
716 | * Return: the neighbour node if found or created or NULL otherwise. | |
717 | */ | |
718 | struct batadv_neigh_node * | |
719 | batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, | |
720 | struct batadv_hard_iface *hard_iface, | |
721 | const u8 *neigh_addr) | |
722 | { | |
422d2f77 | 723 | struct batadv_neigh_node *neigh_node; |
6f0a6b5e ML |
724 | |
725 | /* first check without locking to avoid the overhead */ | |
726 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); | |
727 | if (neigh_node) | |
728 | return neigh_node; | |
729 | ||
730 | return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); | |
731 | } | |
732 | ||
dc1cbd14 | 733 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
7587405a ML |
734 | /** |
735 | * batadv_hardif_neigh_seq_print_text - print the single hop neighbour list | |
736 | * @seq: neighbour table seq_file struct | |
737 | * @offset: not used | |
738 | * | |
62fe710f | 739 | * Return: always 0 |
7587405a ML |
740 | */ |
741 | int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) | |
742 | { | |
743 | struct net_device *net_dev = (struct net_device *)seq->private; | |
744 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
745 | struct batadv_hard_iface *primary_if; | |
746 | ||
747 | primary_if = batadv_seq_print_text_primary_if_get(seq); | |
748 | if (!primary_if) | |
749 | return 0; | |
750 | ||
751 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", | |
752 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, | |
753 | primary_if->net_dev->dev_addr, net_dev->name, | |
29824a55 | 754 | bat_priv->algo_ops->name); |
7587405a | 755 | |
82047ad7 | 756 | batadv_hardif_put(primary_if); |
7587405a | 757 | |
29824a55 | 758 | if (!bat_priv->algo_ops->neigh.print) { |
7587405a ML |
759 | seq_puts(seq, |
760 | "No printing function for this routing protocol\n"); | |
761 | return 0; | |
762 | } | |
763 | ||
29824a55 | 764 | bat_priv->algo_ops->neigh.print(bat_priv, seq); |
7587405a ML |
765 | return 0; |
766 | } | |
dc1cbd14 | 767 | #endif |
7587405a | 768 | |
85cf8c85 MS |
769 | /** |
770 | * batadv_hardif_neigh_dump - Dump to netlink the neighbor infos for a specific | |
771 | * outgoing interface | |
772 | * @msg: message to dump into | |
773 | * @cb: parameters for the dump | |
774 | * | |
775 | * Return: 0 or error value | |
776 | */ | |
777 | int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
778 | { | |
779 | struct net *net = sock_net(cb->skb->sk); | |
780 | struct net_device *soft_iface; | |
781 | struct net_device *hard_iface = NULL; | |
782 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
783 | struct batadv_priv *bat_priv; | |
784 | struct batadv_hard_iface *primary_if = NULL; | |
785 | int ret; | |
786 | int ifindex, hard_ifindex; | |
787 | ||
788 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
789 | if (!ifindex) | |
790 | return -EINVAL; | |
791 | ||
792 | soft_iface = dev_get_by_index(net, ifindex); | |
793 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
794 | ret = -ENODEV; | |
795 | goto out; | |
796 | } | |
797 | ||
798 | bat_priv = netdev_priv(soft_iface); | |
799 | ||
800 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
801 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
802 | ret = -ENOENT; | |
803 | goto out; | |
804 | } | |
805 | ||
806 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
807 | BATADV_ATTR_HARD_IFINDEX); | |
808 | if (hard_ifindex) { | |
809 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
810 | if (hard_iface) | |
811 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
812 | ||
813 | if (!hardif) { | |
814 | ret = -ENODEV; | |
815 | goto out; | |
816 | } | |
817 | ||
818 | if (hardif->soft_iface != soft_iface) { | |
819 | ret = -ENOENT; | |
820 | goto out; | |
821 | } | |
822 | } | |
823 | ||
824 | if (!bat_priv->algo_ops->neigh.dump) { | |
825 | ret = -EOPNOTSUPP; | |
826 | goto out; | |
827 | } | |
828 | ||
829 | bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif); | |
830 | ||
831 | ret = msg->len; | |
832 | ||
833 | out: | |
834 | if (hardif) | |
835 | batadv_hardif_put(hardif); | |
836 | if (hard_iface) | |
837 | dev_put(hard_iface); | |
838 | if (primary_if) | |
839 | batadv_hardif_put(primary_if); | |
840 | if (soft_iface) | |
841 | dev_put(soft_iface); | |
842 | ||
843 | return ret; | |
844 | } | |
845 | ||
7351a482 | 846 | /** |
2baa753c SE |
847 | * batadv_orig_ifinfo_release - release orig_ifinfo from lists and queue for |
848 | * free after rcu grace period | |
a6ba0d34 | 849 | * @ref: kref pointer of the orig_ifinfo |
7351a482 | 850 | */ |
a6ba0d34 | 851 | static void batadv_orig_ifinfo_release(struct kref *ref) |
7351a482 | 852 | { |
a6ba0d34 | 853 | struct batadv_orig_ifinfo *orig_ifinfo; |
000c8dff | 854 | struct batadv_neigh_node *router; |
7351a482 | 855 | |
a6ba0d34 SE |
856 | orig_ifinfo = container_of(ref, struct batadv_orig_ifinfo, refcount); |
857 | ||
7351a482 | 858 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 859 | batadv_hardif_put(orig_ifinfo->if_outgoing); |
7351a482 | 860 | |
000c8dff SW |
861 | /* this is the last reference to this object */ |
862 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
863 | if (router) | |
25bb2509 | 864 | batadv_neigh_node_put(router); |
2baa753c SE |
865 | |
866 | kfree_rcu(orig_ifinfo, rcu); | |
7351a482 SW |
867 | } |
868 | ||
869 | /** | |
35f94779 | 870 | * batadv_orig_ifinfo_put - decrement the refcounter and possibly release |
deed9660 | 871 | * the orig_ifinfo |
7351a482 SW |
872 | * @orig_ifinfo: the orig_ifinfo object to release |
873 | */ | |
35f94779 | 874 | void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) |
7351a482 | 875 | { |
a6ba0d34 | 876 | kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); |
7351a482 SW |
877 | } |
878 | ||
879 | /** | |
deed9660 SE |
880 | * batadv_orig_node_free_rcu - free the orig_node |
881 | * @rcu: rcu pointer of the orig_node | |
7351a482 | 882 | */ |
deed9660 | 883 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
7351a482 | 884 | { |
deed9660 SE |
885 | struct batadv_orig_node *orig_node; |
886 | ||
887 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); | |
888 | ||
889 | batadv_mcast_purge_orig(orig_node); | |
890 | ||
891 | batadv_frag_purge_orig(orig_node, NULL); | |
892 | ||
29824a55 AQ |
893 | if (orig_node->bat_priv->algo_ops->orig.free) |
894 | orig_node->bat_priv->algo_ops->orig.free(orig_node); | |
deed9660 SE |
895 | |
896 | kfree(orig_node->tt_buff); | |
897 | kfree(orig_node); | |
7351a482 SW |
898 | } |
899 | ||
deed9660 SE |
900 | /** |
901 | * batadv_orig_node_release - release orig_node from lists and queue for | |
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 | /** |
5d967310 | 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 | ||
56303d34 | 961 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 962 | { |
5bf74e9c | 963 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 964 | struct hlist_node *node_tmp; |
16b1aba8 | 965 | struct hlist_head *head; |
16b1aba8 | 966 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 967 | struct batadv_orig_node *orig_node; |
6b5e971a | 968 | u32 i; |
16b1aba8 ML |
969 | |
970 | if (!hash) | |
c6c8fea2 SE |
971 | return; |
972 | ||
973 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
974 | ||
c6c8fea2 | 975 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
976 | |
977 | for (i = 0; i < hash->size; i++) { | |
978 | head = &hash->table[i]; | |
979 | list_lock = &hash->list_locks[i]; | |
980 | ||
981 | spin_lock_bh(list_lock); | |
b67bfe0d | 982 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 983 | head, hash_entry) { |
b67bfe0d | 984 | hlist_del_rcu(&orig_node->hash_entry); |
5d967310 | 985 | batadv_orig_node_put(orig_node); |
16b1aba8 ML |
986 | } |
987 | spin_unlock_bh(list_lock); | |
988 | } | |
989 | ||
1a8eaf07 | 990 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
991 | } |
992 | ||
bbad0a5e AQ |
993 | /** |
994 | * batadv_orig_node_new - creates a new orig_node | |
995 | * @bat_priv: the bat priv with all the soft interface information | |
996 | * @addr: the mac address of the originator | |
997 | * | |
998 | * Creates a new originator object and initialise all the generic fields. | |
999 | * The new object is not added to the originator list. | |
62fe710f SE |
1000 | * |
1001 | * Return: the newly created object or NULL on failure. | |
9cfc7bd6 | 1002 | */ |
bbad0a5e | 1003 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
6b5e971a | 1004 | const u8 *addr) |
c6c8fea2 | 1005 | { |
56303d34 | 1006 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 1007 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 1008 | unsigned long reset_time; |
bbad0a5e | 1009 | int i; |
c6c8fea2 | 1010 | |
39c75a51 SE |
1011 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1012 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 1013 | |
704509b8 | 1014 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
1015 | if (!orig_node) |
1016 | return NULL; | |
1017 | ||
9591a79f | 1018 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
d0fa4f3f | 1019 | INIT_HLIST_HEAD(&orig_node->vlan_list); |
7351a482 | 1020 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 1021 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 1022 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 1023 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 1024 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 1025 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 1026 | |
d56b1705 MH |
1027 | batadv_nc_init_orig(orig_node); |
1028 | ||
7b36e8ee | 1029 | /* extra reference for return */ |
7c124391 | 1030 | kref_init(&orig_node->refcount); |
c6c8fea2 | 1031 | |
16b1aba8 | 1032 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 1033 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 1034 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 1035 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 1036 | orig_node->tt_buff = NULL; |
a73105b8 | 1037 | orig_node->tt_buff_len = 0; |
2c667a33 | 1038 | orig_node->last_seen = jiffies; |
42d0b044 SE |
1039 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
1040 | orig_node->bcast_seqno_reset = reset_time; | |
8a4023c5 | 1041 | |
60432d75 LL |
1042 | #ifdef CONFIG_BATMAN_ADV_MCAST |
1043 | orig_node->mcast_flags = BATADV_NO_FLAGS; | |
8a4023c5 LL |
1044 | INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node); |
1045 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node); | |
1046 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node); | |
1047 | spin_lock_init(&orig_node->mcast_handler_lock); | |
60432d75 | 1048 | #endif |
c6c8fea2 | 1049 | |
7ea7b4a1 AQ |
1050 | /* create a vlan object for the "untagged" LAN */ |
1051 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
1052 | if (!vlan) | |
1053 | goto free_orig_node; | |
1054 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
1055 | * Immediately release vlan since it is not needed anymore in this | |
1056 | * context | |
1057 | */ | |
21754e25 | 1058 | batadv_orig_node_vlan_put(vlan); |
7ea7b4a1 | 1059 | |
610bfc6b | 1060 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
176e5b77 | 1061 | INIT_HLIST_HEAD(&orig_node->fragments[i].fragment_list); |
610bfc6b MH |
1062 | spin_lock_init(&orig_node->fragments[i].lock); |
1063 | orig_node->fragments[i].size = 0; | |
1064 | } | |
1065 | ||
c6c8fea2 | 1066 | return orig_node; |
c6c8fea2 SE |
1067 | free_orig_node: |
1068 | kfree(orig_node); | |
1069 | return NULL; | |
1070 | } | |
1071 | ||
709de13f SW |
1072 | /** |
1073 | * batadv_purge_neigh_ifinfo - purge obsolete ifinfo entries from neighbor | |
1074 | * @bat_priv: the bat priv with all the soft interface information | |
1075 | * @neigh: orig node which is to be checked | |
1076 | */ | |
1077 | static void | |
1078 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
1079 | struct batadv_neigh_node *neigh) | |
1080 | { | |
1081 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
1082 | struct batadv_hard_iface *if_outgoing; | |
1083 | struct hlist_node *node_tmp; | |
1084 | ||
1085 | spin_lock_bh(&neigh->ifinfo_lock); | |
1086 | ||
1087 | /* for all ifinfo objects for this neighinator */ | |
1088 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
1089 | &neigh->ifinfo_list, list) { | |
1090 | if_outgoing = neigh_ifinfo->if_outgoing; | |
1091 | ||
1092 | /* always keep the default interface */ | |
1093 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1094 | continue; | |
1095 | ||
1096 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1097 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1098 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1099 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
709de13f SW |
1100 | continue; |
1101 | ||
1102 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1103 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
1104 | neigh->addr, if_outgoing->net_dev->name); | |
1105 | ||
1106 | hlist_del_rcu(&neigh_ifinfo->list); | |
044fa3ae | 1107 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
709de13f SW |
1108 | } |
1109 | ||
1110 | spin_unlock_bh(&neigh->ifinfo_lock); | |
1111 | } | |
1112 | ||
7351a482 SW |
1113 | /** |
1114 | * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator | |
1115 | * @bat_priv: the bat priv with all the soft interface information | |
1116 | * @orig_node: orig node which is to be checked | |
1117 | * | |
62fe710f | 1118 | * Return: true if any ifinfo entry was purged, false otherwise. |
7351a482 SW |
1119 | */ |
1120 | static bool | |
1121 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
1122 | struct batadv_orig_node *orig_node) | |
1123 | { | |
1124 | struct batadv_orig_ifinfo *orig_ifinfo; | |
1125 | struct batadv_hard_iface *if_outgoing; | |
1126 | struct hlist_node *node_tmp; | |
1127 | bool ifinfo_purged = false; | |
1128 | ||
1129 | spin_lock_bh(&orig_node->neigh_list_lock); | |
1130 | ||
1131 | /* for all ifinfo objects for this originator */ | |
1132 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
1133 | &orig_node->ifinfo_list, list) { | |
1134 | if_outgoing = orig_ifinfo->if_outgoing; | |
1135 | ||
1136 | /* always keep the default interface */ | |
1137 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1138 | continue; | |
1139 | ||
1140 | /* don't purge if the interface is not (going) down */ | |
825ffe1f SE |
1141 | if (if_outgoing->if_status != BATADV_IF_INACTIVE && |
1142 | if_outgoing->if_status != BATADV_IF_NOT_IN_USE && | |
1143 | if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED) | |
7351a482 SW |
1144 | continue; |
1145 | ||
1146 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1147 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
1148 | orig_node->orig, if_outgoing->net_dev->name); | |
1149 | ||
1150 | ifinfo_purged = true; | |
1151 | ||
1152 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 1153 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 SW |
1154 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
1155 | orig_node->last_bonding_candidate = NULL; | |
35f94779 | 1156 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 | 1157 | } |
7351a482 SW |
1158 | } |
1159 | ||
1160 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
1161 | ||
1162 | return ifinfo_purged; | |
1163 | } | |
1164 | ||
89652331 SW |
1165 | /** |
1166 | * batadv_purge_orig_neighbors - purges neighbors from originator | |
1167 | * @bat_priv: the bat priv with all the soft interface information | |
1168 | * @orig_node: orig node which is to be checked | |
1169 | * | |
62fe710f | 1170 | * Return: true if any neighbor was purged, false otherwise |
89652331 | 1171 | */ |
56303d34 SE |
1172 | static bool |
1173 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 1174 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 1175 | { |
b67bfe0d | 1176 | struct hlist_node *node_tmp; |
56303d34 | 1177 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 1178 | bool neigh_purged = false; |
0b0094e0 | 1179 | unsigned long last_seen; |
56303d34 | 1180 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 1181 | |
f987ed6e ML |
1182 | spin_lock_bh(&orig_node->neigh_list_lock); |
1183 | ||
c6c8fea2 | 1184 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 1185 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 1186 | &orig_node->neigh_list, list) { |
1eda58bf SE |
1187 | last_seen = neigh_node->last_seen; |
1188 | if_incoming = neigh_node->if_incoming; | |
1189 | ||
825ffe1f SE |
1190 | if (batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT) || |
1191 | if_incoming->if_status == BATADV_IF_INACTIVE || | |
1192 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1193 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) { | |
1194 | if (if_incoming->if_status == BATADV_IF_INACTIVE || | |
1195 | if_incoming->if_status == BATADV_IF_NOT_IN_USE || | |
1196 | if_incoming->if_status == BATADV_IF_TO_BE_REMOVED) | |
39c75a51 | 1197 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1198 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
1199 | orig_node->orig, neigh_node->addr, | |
1200 | if_incoming->net_dev->name); | |
c6c8fea2 | 1201 | else |
39c75a51 | 1202 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1203 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
1204 | orig_node->orig, neigh_node->addr, | |
1205 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
1206 | |
1207 | neigh_purged = true; | |
9591a79f | 1208 | |
f987ed6e | 1209 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 1210 | batadv_neigh_node_put(neigh_node); |
709de13f SW |
1211 | } else { |
1212 | /* only necessary if not the whole neighbor is to be | |
1213 | * deleted, but some interface has been removed. | |
1214 | */ | |
1215 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
1216 | } |
1217 | } | |
f987ed6e ML |
1218 | |
1219 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
1220 | return neigh_purged; |
1221 | } | |
1222 | ||
89652331 SW |
1223 | /** |
1224 | * batadv_find_best_neighbor - finds the best neighbor after purging | |
1225 | * @bat_priv: the bat priv with all the soft interface information | |
1226 | * @orig_node: orig node which is to be checked | |
1227 | * @if_outgoing: the interface for which the metric should be compared | |
1228 | * | |
62fe710f | 1229 | * Return: the current best neighbor, with refcount increased. |
89652331 SW |
1230 | */ |
1231 | static struct batadv_neigh_node * | |
1232 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
1233 | struct batadv_orig_node *orig_node, | |
1234 | struct batadv_hard_iface *if_outgoing) | |
1235 | { | |
1236 | struct batadv_neigh_node *best = NULL, *neigh; | |
29824a55 | 1237 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
89652331 SW |
1238 | |
1239 | rcu_read_lock(); | |
1240 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
29824a55 AQ |
1241 | if (best && (bao->neigh.cmp(neigh, if_outgoing, best, |
1242 | if_outgoing) <= 0)) | |
89652331 SW |
1243 | continue; |
1244 | ||
77ae32e8 | 1245 | if (!kref_get_unless_zero(&neigh->refcount)) |
89652331 SW |
1246 | continue; |
1247 | ||
1248 | if (best) | |
25bb2509 | 1249 | batadv_neigh_node_put(best); |
89652331 SW |
1250 | |
1251 | best = neigh; | |
1252 | } | |
1253 | rcu_read_unlock(); | |
1254 | ||
1255 | return best; | |
1256 | } | |
1257 | ||
7351a482 SW |
1258 | /** |
1259 | * batadv_purge_orig_node - purges obsolete information from an orig_node | |
1260 | * @bat_priv: the bat priv with all the soft interface information | |
1261 | * @orig_node: orig node which is to be checked | |
1262 | * | |
1263 | * This function checks if the orig_node or substructures of it have become | |
1264 | * obsolete, and purges this information if that's the case. | |
1265 | * | |
62fe710f | 1266 | * Return: true if the orig_node is to be removed, false otherwise. |
7351a482 | 1267 | */ |
56303d34 SE |
1268 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
1269 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 1270 | { |
56303d34 | 1271 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 1272 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 1273 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 1274 | |
42d0b044 SE |
1275 | if (batadv_has_timed_out(orig_node->last_seen, |
1276 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 1277 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1278 | "Originator timeout: originator %pM, last_seen %u\n", |
1279 | orig_node->orig, | |
1280 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 1281 | return true; |
c6c8fea2 | 1282 | } |
7b955a9f SW |
1283 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
1284 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 1285 | |
7b955a9f | 1286 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
1287 | return false; |
1288 | ||
7351a482 | 1289 | /* first for NULL ... */ |
89652331 SW |
1290 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
1291 | BATADV_IF_DEFAULT); | |
7351a482 SW |
1292 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
1293 | best_neigh_node); | |
89652331 | 1294 | if (best_neigh_node) |
25bb2509 | 1295 | batadv_neigh_node_put(best_neigh_node); |
c6c8fea2 | 1296 | |
7351a482 SW |
1297 | /* ... then for all other interfaces. */ |
1298 | rcu_read_lock(); | |
1299 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
1300 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
1301 | continue; | |
1302 | ||
1303 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
1304 | continue; | |
1305 | ||
27353446 SE |
1306 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
1307 | continue; | |
1308 | ||
7351a482 SW |
1309 | best_neigh_node = batadv_find_best_neighbor(bat_priv, |
1310 | orig_node, | |
1311 | hard_iface); | |
1312 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
1313 | best_neigh_node); | |
1314 | if (best_neigh_node) | |
25bb2509 | 1315 | batadv_neigh_node_put(best_neigh_node); |
27353446 SE |
1316 | |
1317 | batadv_hardif_put(hard_iface); | |
7351a482 SW |
1318 | } |
1319 | rcu_read_unlock(); | |
1320 | ||
c6c8fea2 SE |
1321 | return false; |
1322 | } | |
1323 | ||
56303d34 | 1324 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 1325 | { |
5bf74e9c | 1326 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 1327 | struct hlist_node *node_tmp; |
c6c8fea2 | 1328 | struct hlist_head *head; |
fb778ea1 | 1329 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 1330 | struct batadv_orig_node *orig_node; |
6b5e971a | 1331 | u32 i; |
c6c8fea2 SE |
1332 | |
1333 | if (!hash) | |
1334 | return; | |
1335 | ||
c6c8fea2 SE |
1336 | /* for all origins... */ |
1337 | for (i = 0; i < hash->size; i++) { | |
1338 | head = &hash->table[i]; | |
fb778ea1 | 1339 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 1340 | |
fb778ea1 | 1341 | spin_lock_bh(list_lock); |
b67bfe0d | 1342 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 1343 | head, hash_entry) { |
03fc7f86 | 1344 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 1345 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 1346 | hlist_del_rcu(&orig_node->hash_entry); |
9d31b3ce LL |
1347 | batadv_tt_global_del_orig(orig_node->bat_priv, |
1348 | orig_node, -1, | |
1349 | "originator timed out"); | |
5d967310 | 1350 | batadv_orig_node_put(orig_node); |
fb778ea1 | 1351 | continue; |
c6c8fea2 | 1352 | } |
610bfc6b MH |
1353 | |
1354 | batadv_frag_purge_orig(orig_node, | |
1355 | batadv_frag_check_entry); | |
c6c8fea2 | 1356 | } |
fb778ea1 | 1357 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
1358 | } |
1359 | ||
7cf06bc6 | 1360 | batadv_gw_election(bat_priv); |
c6c8fea2 SE |
1361 | } |
1362 | ||
03fc7f86 | 1363 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 1364 | { |
56303d34 SE |
1365 | struct delayed_work *delayed_work; |
1366 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 1367 | |
4ba4bc0f | 1368 | delayed_work = to_delayed_work(work); |
56303d34 | 1369 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
03fc7f86 | 1370 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
1371 | queue_delayed_work(batadv_event_workqueue, |
1372 | &bat_priv->orig_work, | |
1373 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1374 | } |
1375 | ||
56303d34 | 1376 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 1377 | { |
03fc7f86 | 1378 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
1379 | } |
1380 | ||
dc1cbd14 | 1381 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
7d211efc | 1382 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
1383 | { |
1384 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 1385 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 1386 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 1387 | |
30da63a6 ML |
1388 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
1389 | if (!primary_if) | |
737a2a22 | 1390 | return 0; |
c6c8fea2 | 1391 | |
737a2a22 | 1392 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 1393 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 | 1394 | primary_if->net_dev->dev_addr, net_dev->name, |
29824a55 | 1395 | bat_priv->algo_ops->name); |
c6c8fea2 | 1396 | |
82047ad7 | 1397 | batadv_hardif_put(primary_if); |
c6c8fea2 | 1398 | |
29824a55 | 1399 | if (!bat_priv->algo_ops->orig.print) { |
737a2a22 AQ |
1400 | seq_puts(seq, |
1401 | "No printing function for this routing protocol\n"); | |
1402 | return 0; | |
c6c8fea2 SE |
1403 | } |
1404 | ||
29824a55 | 1405 | bat_priv->algo_ops->orig.print(bat_priv, seq, BATADV_IF_DEFAULT); |
c6c8fea2 | 1406 | |
30da63a6 | 1407 | return 0; |
c6c8fea2 SE |
1408 | } |
1409 | ||
cb1c92ec SW |
1410 | /** |
1411 | * batadv_orig_hardif_seq_print_text - writes originator infos for a specific | |
1412 | * outgoing interface | |
1413 | * @seq: debugfs table seq_file struct | |
1414 | * @offset: not used | |
1415 | * | |
62fe710f | 1416 | * Return: 0 |
cb1c92ec SW |
1417 | */ |
1418 | int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) | |
1419 | { | |
1420 | struct net_device *net_dev = (struct net_device *)seq->private; | |
1421 | struct batadv_hard_iface *hard_iface; | |
1422 | struct batadv_priv *bat_priv; | |
1423 | ||
1424 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1425 | ||
1426 | if (!hard_iface || !hard_iface->soft_iface) { | |
1427 | seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); | |
1428 | goto out; | |
1429 | } | |
1430 | ||
1431 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
29824a55 | 1432 | if (!bat_priv->algo_ops->orig.print) { |
cb1c92ec SW |
1433 | seq_puts(seq, |
1434 | "No printing function for this routing protocol\n"); | |
1435 | goto out; | |
1436 | } | |
1437 | ||
1438 | if (hard_iface->if_status != BATADV_IF_ACTIVE) { | |
1439 | seq_puts(seq, "Interface not active\n"); | |
1440 | goto out; | |
1441 | } | |
1442 | ||
1443 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", | |
1444 | BATADV_SOURCE_VERSION, hard_iface->net_dev->name, | |
1445 | hard_iface->net_dev->dev_addr, | |
29824a55 | 1446 | hard_iface->soft_iface->name, bat_priv->algo_ops->name); |
cb1c92ec | 1447 | |
29824a55 | 1448 | bat_priv->algo_ops->orig.print(bat_priv, seq, hard_iface); |
cb1c92ec SW |
1449 | |
1450 | out: | |
16a41423 | 1451 | if (hard_iface) |
82047ad7 | 1452 | batadv_hardif_put(hard_iface); |
cb1c92ec SW |
1453 | return 0; |
1454 | } | |
dc1cbd14 | 1455 | #endif |
cb1c92ec | 1456 | |
85cf8c85 MS |
1457 | /** |
1458 | * batadv_orig_dump - Dump to netlink the originator infos for a specific | |
1459 | * outgoing interface | |
1460 | * @msg: message to dump into | |
1461 | * @cb: parameters for the dump | |
1462 | * | |
1463 | * Return: 0 or error value | |
1464 | */ | |
1465 | int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
1466 | { | |
1467 | struct net *net = sock_net(cb->skb->sk); | |
1468 | struct net_device *soft_iface; | |
1469 | struct net_device *hard_iface = NULL; | |
1470 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
1471 | struct batadv_priv *bat_priv; | |
1472 | struct batadv_hard_iface *primary_if = NULL; | |
1473 | int ret; | |
1474 | int ifindex, hard_ifindex; | |
1475 | ||
1476 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
1477 | if (!ifindex) | |
1478 | return -EINVAL; | |
1479 | ||
1480 | soft_iface = dev_get_by_index(net, ifindex); | |
1481 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
1482 | ret = -ENODEV; | |
1483 | goto out; | |
1484 | } | |
1485 | ||
1486 | bat_priv = netdev_priv(soft_iface); | |
1487 | ||
1488 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
1489 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
1490 | ret = -ENOENT; | |
1491 | goto out; | |
1492 | } | |
1493 | ||
1494 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
1495 | BATADV_ATTR_HARD_IFINDEX); | |
1496 | if (hard_ifindex) { | |
1497 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
1498 | if (hard_iface) | |
1499 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
1500 | ||
1501 | if (!hardif) { | |
1502 | ret = -ENODEV; | |
1503 | goto out; | |
1504 | } | |
1505 | ||
1506 | if (hardif->soft_iface != soft_iface) { | |
1507 | ret = -ENOENT; | |
1508 | goto out; | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | if (!bat_priv->algo_ops->orig.dump) { | |
1513 | ret = -EOPNOTSUPP; | |
1514 | goto out; | |
1515 | } | |
1516 | ||
1517 | bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif); | |
1518 | ||
1519 | ret = msg->len; | |
1520 | ||
1521 | out: | |
1522 | if (hardif) | |
1523 | batadv_hardif_put(hardif); | |
1524 | if (hard_iface) | |
1525 | dev_put(hard_iface); | |
1526 | if (primary_if) | |
1527 | batadv_hardif_put(primary_if); | |
1528 | if (soft_iface) | |
1529 | dev_put(soft_iface); | |
1530 | ||
1531 | return ret; | |
1532 | } | |
1533 | ||
56303d34 SE |
1534 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
1535 | int max_if_num) | |
c6c8fea2 | 1536 | { |
56303d34 | 1537 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
29824a55 | 1538 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
5bf74e9c | 1539 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1540 | struct hlist_head *head; |
56303d34 | 1541 | struct batadv_orig_node *orig_node; |
6b5e971a | 1542 | u32 i; |
c90681b8 | 1543 | int ret; |
c6c8fea2 SE |
1544 | |
1545 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1546 | * if_num |
1547 | */ | |
c6c8fea2 SE |
1548 | for (i = 0; i < hash->size; i++) { |
1549 | head = &hash->table[i]; | |
1550 | ||
fb778ea1 | 1551 | rcu_read_lock(); |
b67bfe0d | 1552 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd | 1553 | ret = 0; |
29824a55 AQ |
1554 | if (bao->orig.add_if) |
1555 | ret = bao->orig.add_if(orig_node, max_if_num); | |
5346c35e | 1556 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1557 | goto err; |
1558 | } | |
fb778ea1 | 1559 | rcu_read_unlock(); |
c6c8fea2 SE |
1560 | } |
1561 | ||
c6c8fea2 SE |
1562 | return 0; |
1563 | ||
1564 | err: | |
fb778ea1 | 1565 | rcu_read_unlock(); |
c6c8fea2 SE |
1566 | return -ENOMEM; |
1567 | } | |
1568 | ||
56303d34 SE |
1569 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
1570 | int max_if_num) | |
c6c8fea2 | 1571 | { |
56303d34 | 1572 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 1573 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1574 | struct hlist_head *head; |
56303d34 SE |
1575 | struct batadv_hard_iface *hard_iface_tmp; |
1576 | struct batadv_orig_node *orig_node; | |
29824a55 | 1577 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
6b5e971a | 1578 | u32 i; |
c90681b8 | 1579 | int ret; |
c6c8fea2 SE |
1580 | |
1581 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1582 | * if_num |
1583 | */ | |
c6c8fea2 SE |
1584 | for (i = 0; i < hash->size; i++) { |
1585 | head = &hash->table[i]; | |
1586 | ||
fb778ea1 | 1587 | rcu_read_lock(); |
b67bfe0d | 1588 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd | 1589 | ret = 0; |
29824a55 AQ |
1590 | if (bao->orig.del_if) |
1591 | ret = bao->orig.del_if(orig_node, max_if_num, | |
1592 | hard_iface->if_num); | |
5346c35e | 1593 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1594 | goto err; |
1595 | } | |
fb778ea1 | 1596 | rcu_read_unlock(); |
c6c8fea2 SE |
1597 | } |
1598 | ||
1599 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
1600 | rcu_read_lock(); | |
3193e8fd | 1601 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 1602 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
1603 | continue; |
1604 | ||
e6c10f43 | 1605 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
1606 | continue; |
1607 | ||
e6c10f43 | 1608 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
1609 | continue; |
1610 | ||
e6c10f43 ML |
1611 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
1612 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
1613 | } |
1614 | rcu_read_unlock(); | |
1615 | ||
e6c10f43 | 1616 | hard_iface->if_num = -1; |
c6c8fea2 SE |
1617 | return 0; |
1618 | ||
1619 | err: | |
fb778ea1 | 1620 | rcu_read_unlock(); |
c6c8fea2 SE |
1621 | return -ENOMEM; |
1622 | } |