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0046b040 | 1 | /* Copyright (C) 2009-2016 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> |
1e2c2a4f | 33 | #include <linux/seq_file.h> |
85cf8c85 | 34 | #include <linux/skbuff.h> |
1e2c2a4f SE |
35 | #include <linux/slab.h> |
36 | #include <linux/spinlock.h> | |
37 | #include <linux/workqueue.h> | |
85cf8c85 MS |
38 | #include <net/sock.h> |
39 | #include <uapi/linux/batman_adv.h> | |
1e2c2a4f | 40 | |
01d350d1 | 41 | #include "bat_algo.h" |
785ea114 | 42 | #include "distributed-arp-table.h" |
1e2c2a4f | 43 | #include "fragmentation.h" |
c6c8fea2 SE |
44 | #include "gateway_client.h" |
45 | #include "hard-interface.h" | |
1e2c2a4f | 46 | #include "hash.h" |
ba412080 | 47 | #include "log.h" |
60432d75 | 48 | #include "multicast.h" |
85cf8c85 | 49 | #include "netlink.h" |
1e2c2a4f SE |
50 | #include "network-coding.h" |
51 | #include "routing.h" | |
85cf8c85 | 52 | #include "soft-interface.h" |
1e2c2a4f | 53 | #include "translation-table.h" |
c6c8fea2 | 54 | |
dec05074 AQ |
55 | /* hash class keys */ |
56 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
57 | ||
03fc7f86 | 58 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 59 | |
62fe710f | 60 | /** |
7afcbbef SE |
61 | * batadv_compare_orig - comparing function used in the originator hash table |
62 | * @node: node in the local table | |
63 | * @data2: second object to compare the node to | |
62fe710f | 64 | * |
4b426b10 | 65 | * Return: true if they are the same originator |
62fe710f | 66 | */ |
4b426b10 | 67 | bool batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 68 | { |
56303d34 SE |
69 | const void *data1 = container_of(node, struct batadv_orig_node, |
70 | hash_entry); | |
b8e2dd13 | 71 | |
323813ed | 72 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
73 | } |
74 | ||
7ea7b4a1 AQ |
75 | /** |
76 | * batadv_orig_node_vlan_get - get an orig_node_vlan object | |
77 | * @orig_node: the originator serving the VLAN | |
78 | * @vid: the VLAN identifier | |
79 | * | |
62fe710f | 80 | * Return: the vlan object identified by vid and belonging to orig_node or NULL |
7ea7b4a1 AQ |
81 | * if it does not exist. |
82 | */ | |
83 | struct batadv_orig_node_vlan * | |
84 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
85 | unsigned short vid) | |
86 | { | |
87 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
88 | ||
89 | rcu_read_lock(); | |
d0fa4f3f | 90 | hlist_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { |
7ea7b4a1 AQ |
91 | if (tmp->vid != vid) |
92 | continue; | |
93 | ||
161a3be9 | 94 | if (!kref_get_unless_zero(&tmp->refcount)) |
7ea7b4a1 AQ |
95 | continue; |
96 | ||
97 | vlan = tmp; | |
98 | ||
99 | break; | |
100 | } | |
101 | rcu_read_unlock(); | |
102 | ||
103 | return vlan; | |
104 | } | |
105 | ||
106 | /** | |
107 | * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan | |
108 | * object | |
109 | * @orig_node: the originator serving the VLAN | |
110 | * @vid: the VLAN identifier | |
111 | * | |
62fe710f | 112 | * Return: NULL in case of failure or the vlan object identified by vid and |
7ea7b4a1 AQ |
113 | * belonging to orig_node otherwise. The object is created and added to the list |
114 | * if it does not exist. | |
115 | * | |
116 | * The object is returned with refcounter increased by 1. | |
117 | */ | |
118 | struct batadv_orig_node_vlan * | |
119 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
120 | unsigned short vid) | |
121 | { | |
122 | struct batadv_orig_node_vlan *vlan; | |
123 | ||
124 | spin_lock_bh(&orig_node->vlan_list_lock); | |
125 | ||
126 | /* first look if an object for this vid already exists */ | |
127 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
128 | if (vlan) | |
129 | goto out; | |
130 | ||
131 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
132 | if (!vlan) | |
133 | goto out; | |
134 | ||
161a3be9 | 135 | kref_init(&vlan->refcount); |
7ea7b4a1 AQ |
136 | vlan->vid = vid; |
137 | ||
09537d18 | 138 | kref_get(&vlan->refcount); |
d0fa4f3f | 139 | hlist_add_head_rcu(&vlan->list, &orig_node->vlan_list); |
7ea7b4a1 AQ |
140 | |
141 | out: | |
142 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
143 | ||
144 | return vlan; | |
145 | } | |
146 | ||
147 | /** | |
161a3be9 SE |
148 | * batadv_orig_node_vlan_release - release originator-vlan object from lists |
149 | * and queue for free after rcu grace period | |
150 | * @ref: kref pointer of the originator-vlan object | |
151 | */ | |
152 | static void batadv_orig_node_vlan_release(struct kref *ref) | |
153 | { | |
154 | struct batadv_orig_node_vlan *orig_vlan; | |
155 | ||
156 | orig_vlan = container_of(ref, struct batadv_orig_node_vlan, refcount); | |
157 | ||
158 | kfree_rcu(orig_vlan, rcu); | |
159 | } | |
160 | ||
161 | /** | |
21754e25 SE |
162 | * batadv_orig_node_vlan_put - decrement the refcounter and possibly release |
163 | * the originator-vlan object | |
7ea7b4a1 AQ |
164 | * @orig_vlan: the originator-vlan object to release |
165 | */ | |
21754e25 | 166 | void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) |
7ea7b4a1 | 167 | { |
161a3be9 | 168 | kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); |
7ea7b4a1 AQ |
169 | } |
170 | ||
56303d34 | 171 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
172 | { |
173 | if (bat_priv->orig_hash) | |
5346c35e | 174 | return 0; |
c6c8fea2 | 175 | |
1a8eaf07 | 176 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
177 | |
178 | if (!bat_priv->orig_hash) | |
179 | goto err; | |
180 | ||
dec05074 AQ |
181 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
182 | &batadv_orig_hash_lock_class_key); | |
183 | ||
72414442 AQ |
184 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
185 | queue_delayed_work(batadv_event_workqueue, | |
186 | &bat_priv->orig_work, | |
187 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
188 | ||
5346c35e | 189 | return 0; |
c6c8fea2 SE |
190 | |
191 | err: | |
5346c35e | 192 | return -ENOMEM; |
c6c8fea2 SE |
193 | } |
194 | ||
89652331 | 195 | /** |
ae3e1e36 SE |
196 | * batadv_neigh_ifinfo_release - release neigh_ifinfo from lists and queue for |
197 | * free after rcu grace period | |
962c6832 | 198 | * @ref: kref pointer of the neigh_ifinfo |
89652331 | 199 | */ |
962c6832 | 200 | static void batadv_neigh_ifinfo_release(struct kref *ref) |
89652331 | 201 | { |
962c6832 SE |
202 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
203 | ||
204 | neigh_ifinfo = container_of(ref, struct batadv_neigh_ifinfo, refcount); | |
205 | ||
ae3e1e36 | 206 | if (neigh_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 207 | batadv_hardif_put(neigh_ifinfo->if_outgoing); |
ae3e1e36 SE |
208 | |
209 | kfree_rcu(neigh_ifinfo, rcu); | |
89652331 SW |
210 | } |
211 | ||
212 | /** | |
044fa3ae | 213 | * batadv_neigh_ifinfo_put - decrement the refcounter and possibly release |
89652331 SW |
214 | * the neigh_ifinfo |
215 | * @neigh_ifinfo: the neigh_ifinfo object to release | |
216 | */ | |
044fa3ae | 217 | void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) |
89652331 | 218 | { |
962c6832 | 219 | kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release); |
89652331 SW |
220 | } |
221 | ||
cef63419 | 222 | /** |
f6389692 SE |
223 | * batadv_hardif_neigh_release - release hardif neigh node from lists and |
224 | * queue for free after rcu grace period | |
90f564df | 225 | * @ref: kref pointer of the neigh_node |
cef63419 | 226 | */ |
90f564df | 227 | static void batadv_hardif_neigh_release(struct kref *ref) |
cef63419 | 228 | { |
90f564df SE |
229 | struct batadv_hardif_neigh_node *hardif_neigh; |
230 | ||
231 | hardif_neigh = container_of(ref, struct batadv_hardif_neigh_node, | |
232 | refcount); | |
233 | ||
f6389692 SE |
234 | spin_lock_bh(&hardif_neigh->if_incoming->neigh_list_lock); |
235 | hlist_del_init_rcu(&hardif_neigh->list); | |
236 | spin_unlock_bh(&hardif_neigh->if_incoming->neigh_list_lock); | |
bab7c6c3 | 237 | |
82047ad7 | 238 | batadv_hardif_put(hardif_neigh->if_incoming); |
f6389692 | 239 | kfree_rcu(hardif_neigh, rcu); |
cef63419 ML |
240 | } |
241 | ||
242 | /** | |
accadc35 | 243 | * batadv_hardif_neigh_put - decrement the hardif neighbors refcounter |
f6389692 | 244 | * and possibly release it |
cef63419 ML |
245 | * @hardif_neigh: hardif neigh neighbor to free |
246 | */ | |
accadc35 | 247 | void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) |
cef63419 | 248 | { |
90f564df | 249 | kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release); |
cef63419 ML |
250 | } |
251 | ||
89652331 | 252 | /** |
b4d922cf SE |
253 | * batadv_neigh_node_release - release neigh_node from lists and queue for |
254 | * free after rcu grace period | |
77ae32e8 | 255 | * @ref: kref pointer of the neigh_node |
89652331 | 256 | */ |
77ae32e8 | 257 | static void batadv_neigh_node_release(struct kref *ref) |
89652331 SW |
258 | { |
259 | struct hlist_node *node_tmp; | |
77ae32e8 | 260 | struct batadv_neigh_node *neigh_node; |
89652331 SW |
261 | struct batadv_neigh_ifinfo *neigh_ifinfo; |
262 | ||
77ae32e8 | 263 | neigh_node = container_of(ref, struct batadv_neigh_node, refcount); |
89652331 SW |
264 | |
265 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
266 | &neigh_node->ifinfo_list, list) { | |
044fa3ae | 267 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
89652331 | 268 | } |
bcef1f3c | 269 | |
abe59c65 | 270 | batadv_hardif_neigh_put(neigh_node->hardif_neigh); |
cef63419 | 271 | |
82047ad7 | 272 | batadv_hardif_put(neigh_node->if_incoming); |
89652331 | 273 | |
b4d922cf | 274 | kfree_rcu(neigh_node, rcu); |
89652331 SW |
275 | } |
276 | ||
89652331 | 277 | /** |
25bb2509 | 278 | * batadv_neigh_node_put - decrement the neighbors refcounter and possibly |
77ae32e8 | 279 | * release it |
89652331 SW |
280 | * @neigh_node: neigh neighbor to free |
281 | */ | |
25bb2509 | 282 | void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 283 | { |
77ae32e8 | 284 | kref_put(&neigh_node->refcount, batadv_neigh_node_release); |
a4c135c5 SW |
285 | } |
286 | ||
7351a482 | 287 | /** |
6d030de8 | 288 | * batadv_orig_router_get - router to the originator depending on iface |
7351a482 SW |
289 | * @orig_node: the orig node for the router |
290 | * @if_outgoing: the interface where the payload packet has been received or | |
291 | * the OGM should be sent to | |
292 | * | |
62fe710f | 293 | * Return: the neighbor which should be router for this orig_node/iface. |
7351a482 SW |
294 | * |
295 | * The object is returned with refcounter increased by 1. | |
296 | */ | |
56303d34 | 297 | struct batadv_neigh_node * |
7351a482 SW |
298 | batadv_orig_router_get(struct batadv_orig_node *orig_node, |
299 | const struct batadv_hard_iface *if_outgoing) | |
e1a5382f | 300 | { |
7351a482 SW |
301 | struct batadv_orig_ifinfo *orig_ifinfo; |
302 | struct batadv_neigh_node *router = NULL; | |
e1a5382f LL |
303 | |
304 | rcu_read_lock(); | |
7351a482 SW |
305 | hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { |
306 | if (orig_ifinfo->if_outgoing != if_outgoing) | |
307 | continue; | |
308 | ||
309 | router = rcu_dereference(orig_ifinfo->router); | |
310 | break; | |
311 | } | |
e1a5382f | 312 | |
77ae32e8 | 313 | if (router && !kref_get_unless_zero(&router->refcount)) |
e1a5382f LL |
314 | router = NULL; |
315 | ||
316 | rcu_read_unlock(); | |
317 | return router; | |
318 | } | |
319 | ||
7351a482 SW |
320 | /** |
321 | * batadv_orig_ifinfo_get - find the ifinfo from an orig_node | |
322 | * @orig_node: the orig node to be queried | |
323 | * @if_outgoing: the interface for which the ifinfo should be acquired | |
324 | * | |
62fe710f | 325 | * Return: the requested orig_ifinfo or NULL if not found. |
7351a482 SW |
326 | * |
327 | * The object is returned with refcounter increased by 1. | |
328 | */ | |
329 | struct batadv_orig_ifinfo * | |
330 | batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, | |
331 | struct batadv_hard_iface *if_outgoing) | |
332 | { | |
333 | struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; | |
334 | ||
335 | rcu_read_lock(); | |
336 | hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, | |
337 | list) { | |
338 | if (tmp->if_outgoing != if_outgoing) | |
339 | continue; | |
340 | ||
a6ba0d34 | 341 | if (!kref_get_unless_zero(&tmp->refcount)) |
7351a482 SW |
342 | continue; |
343 | ||
344 | orig_ifinfo = tmp; | |
345 | break; | |
346 | } | |
347 | rcu_read_unlock(); | |
348 | ||
349 | return orig_ifinfo; | |
350 | } | |
351 | ||
352 | /** | |
353 | * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object | |
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: NULL in case of failure or the orig_ifinfo object for the if_outgoing |
7351a482 SW |
358 | * interface otherwise. The object is created and added to the list |
359 | * if it does not exist. | |
360 | * | |
361 | * The object is returned with refcounter increased by 1. | |
362 | */ | |
363 | struct batadv_orig_ifinfo * | |
364 | batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, | |
365 | struct batadv_hard_iface *if_outgoing) | |
366 | { | |
422d2f77 | 367 | struct batadv_orig_ifinfo *orig_ifinfo; |
7351a482 SW |
368 | unsigned long reset_time; |
369 | ||
370 | spin_lock_bh(&orig_node->neigh_list_lock); | |
371 | ||
372 | orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); | |
373 | if (orig_ifinfo) | |
374 | goto out; | |
375 | ||
376 | orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); | |
377 | if (!orig_ifinfo) | |
378 | goto out; | |
379 | ||
17a86915 SE |
380 | if (if_outgoing != BATADV_IF_DEFAULT) |
381 | kref_get(&if_outgoing->refcount); | |
7351a482 SW |
382 | |
383 | reset_time = jiffies - 1; | |
384 | reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); | |
385 | orig_ifinfo->batman_seqno_reset = reset_time; | |
386 | orig_ifinfo->if_outgoing = if_outgoing; | |
387 | INIT_HLIST_NODE(&orig_ifinfo->list); | |
a6ba0d34 | 388 | kref_init(&orig_ifinfo->refcount); |
f257b99b | 389 | |
a6ba0d34 | 390 | kref_get(&orig_ifinfo->refcount); |
7351a482 SW |
391 | hlist_add_head_rcu(&orig_ifinfo->list, |
392 | &orig_node->ifinfo_list); | |
393 | out: | |
394 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
395 | return orig_ifinfo; | |
396 | } | |
397 | ||
89652331 SW |
398 | /** |
399 | * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node | |
e51f0397 | 400 | * @neigh: the neigh node to be queried |
89652331 SW |
401 | * @if_outgoing: the interface for which the ifinfo should be acquired |
402 | * | |
403 | * The object is returned with refcounter increased by 1. | |
404 | * | |
62fe710f | 405 | * Return: the requested neigh_ifinfo or NULL if not found |
89652331 SW |
406 | */ |
407 | struct batadv_neigh_ifinfo * | |
408 | batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, | |
409 | struct batadv_hard_iface *if_outgoing) | |
410 | { | |
411 | struct batadv_neigh_ifinfo *neigh_ifinfo = NULL, | |
412 | *tmp_neigh_ifinfo; | |
413 | ||
414 | rcu_read_lock(); | |
415 | hlist_for_each_entry_rcu(tmp_neigh_ifinfo, &neigh->ifinfo_list, | |
416 | list) { | |
417 | if (tmp_neigh_ifinfo->if_outgoing != if_outgoing) | |
418 | continue; | |
419 | ||
962c6832 | 420 | if (!kref_get_unless_zero(&tmp_neigh_ifinfo->refcount)) |
89652331 SW |
421 | continue; |
422 | ||
423 | neigh_ifinfo = tmp_neigh_ifinfo; | |
424 | break; | |
425 | } | |
426 | rcu_read_unlock(); | |
427 | ||
428 | return neigh_ifinfo; | |
429 | } | |
430 | ||
431 | /** | |
432 | * batadv_neigh_ifinfo_new - search and possibly create an neigh_ifinfo object | |
e51f0397 | 433 | * @neigh: the neigh node to be queried |
89652331 SW |
434 | * @if_outgoing: the interface for which the ifinfo should be acquired |
435 | * | |
62fe710f | 436 | * Return: NULL in case of failure or the neigh_ifinfo object for the |
89652331 SW |
437 | * if_outgoing interface otherwise. The object is created and added to the list |
438 | * if it does not exist. | |
439 | * | |
440 | * The object is returned with refcounter increased by 1. | |
441 | */ | |
442 | struct batadv_neigh_ifinfo * | |
443 | batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, | |
444 | struct batadv_hard_iface *if_outgoing) | |
445 | { | |
446 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
447 | ||
448 | spin_lock_bh(&neigh->ifinfo_lock); | |
449 | ||
450 | neigh_ifinfo = batadv_neigh_ifinfo_get(neigh, if_outgoing); | |
451 | if (neigh_ifinfo) | |
452 | goto out; | |
453 | ||
454 | neigh_ifinfo = kzalloc(sizeof(*neigh_ifinfo), GFP_ATOMIC); | |
455 | if (!neigh_ifinfo) | |
456 | goto out; | |
457 | ||
17a86915 SE |
458 | if (if_outgoing) |
459 | kref_get(&if_outgoing->refcount); | |
89652331 SW |
460 | |
461 | INIT_HLIST_NODE(&neigh_ifinfo->list); | |
962c6832 | 462 | kref_init(&neigh_ifinfo->refcount); |
89652331 SW |
463 | neigh_ifinfo->if_outgoing = if_outgoing; |
464 | ||
2e774ac2 | 465 | kref_get(&neigh_ifinfo->refcount); |
89652331 SW |
466 | hlist_add_head_rcu(&neigh_ifinfo->list, &neigh->ifinfo_list); |
467 | ||
468 | out: | |
469 | spin_unlock_bh(&neigh->ifinfo_lock); | |
470 | ||
471 | return neigh_ifinfo; | |
472 | } | |
473 | ||
ed292663 ML |
474 | /** |
475 | * batadv_neigh_node_get - retrieve a neighbour from the list | |
476 | * @orig_node: originator which the neighbour belongs to | |
477 | * @hard_iface: the interface where this neighbour is connected to | |
478 | * @addr: the address of the neighbour | |
479 | * | |
480 | * Looks for and possibly returns a neighbour belonging to this originator list | |
481 | * which is connected through the provided hard interface. | |
62fe710f SE |
482 | * |
483 | * Return: neighbor when found. Othwerwise NULL | |
ed292663 ML |
484 | */ |
485 | static struct batadv_neigh_node * | |
486 | batadv_neigh_node_get(const struct batadv_orig_node *orig_node, | |
487 | const struct batadv_hard_iface *hard_iface, | |
488 | const u8 *addr) | |
489 | { | |
490 | struct batadv_neigh_node *tmp_neigh_node, *res = NULL; | |
491 | ||
492 | rcu_read_lock(); | |
493 | hlist_for_each_entry_rcu(tmp_neigh_node, &orig_node->neigh_list, list) { | |
494 | if (!batadv_compare_eth(tmp_neigh_node->addr, addr)) | |
495 | continue; | |
496 | ||
497 | if (tmp_neigh_node->if_incoming != hard_iface) | |
498 | continue; | |
499 | ||
77ae32e8 | 500 | if (!kref_get_unless_zero(&tmp_neigh_node->refcount)) |
ed292663 ML |
501 | continue; |
502 | ||
503 | res = tmp_neigh_node; | |
504 | break; | |
505 | } | |
506 | rcu_read_unlock(); | |
507 | ||
508 | return res; | |
509 | } | |
510 | ||
cef63419 ML |
511 | /** |
512 | * batadv_hardif_neigh_create - create a hardif neighbour node | |
513 | * @hard_iface: the interface this neighbour is connected to | |
514 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 515 | * @orig_node: originator object representing the neighbour |
cef63419 | 516 | * |
62fe710f | 517 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
518 | */ |
519 | static struct batadv_hardif_neigh_node * | |
520 | batadv_hardif_neigh_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
521 | const u8 *neigh_addr, |
522 | struct batadv_orig_node *orig_node) | |
cef63419 | 523 | { |
8248a4c7 | 524 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
422d2f77 | 525 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
526 | |
527 | spin_lock_bh(&hard_iface->neigh_list_lock); | |
528 | ||
529 | /* check if neighbor hasn't been added in the meantime */ | |
530 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
531 | if (hardif_neigh) | |
532 | goto out; | |
533 | ||
cef63419 | 534 | hardif_neigh = kzalloc(sizeof(*hardif_neigh), GFP_ATOMIC); |
17a86915 | 535 | if (!hardif_neigh) |
cef63419 | 536 | goto out; |
cef63419 | 537 | |
17a86915 | 538 | kref_get(&hard_iface->refcount); |
cef63419 ML |
539 | INIT_HLIST_NODE(&hardif_neigh->list); |
540 | ether_addr_copy(hardif_neigh->addr, neigh_addr); | |
3111beed | 541 | ether_addr_copy(hardif_neigh->orig, orig_node->orig); |
cef63419 ML |
542 | hardif_neigh->if_incoming = hard_iface; |
543 | hardif_neigh->last_seen = jiffies; | |
544 | ||
90f564df | 545 | kref_init(&hardif_neigh->refcount); |
cef63419 | 546 | |
29824a55 AQ |
547 | if (bat_priv->algo_ops->neigh.hardif_init) |
548 | bat_priv->algo_ops->neigh.hardif_init(hardif_neigh); | |
8248a4c7 | 549 | |
9ca488dd | 550 | hlist_add_head_rcu(&hardif_neigh->list, &hard_iface->neigh_list); |
cef63419 ML |
551 | |
552 | out: | |
553 | spin_unlock_bh(&hard_iface->neigh_list_lock); | |
554 | return hardif_neigh; | |
555 | } | |
556 | ||
557 | /** | |
558 | * batadv_hardif_neigh_get_or_create - retrieve or create a hardif neighbour | |
559 | * node | |
560 | * @hard_iface: the interface this neighbour is connected to | |
561 | * @neigh_addr: the interface address of the neighbour to retrieve | |
3111beed | 562 | * @orig_node: originator object representing the neighbour |
cef63419 | 563 | * |
62fe710f | 564 | * Return: the hardif neighbour node if found or created or NULL otherwise. |
cef63419 ML |
565 | */ |
566 | static struct batadv_hardif_neigh_node * | |
567 | batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, | |
3111beed LL |
568 | const u8 *neigh_addr, |
569 | struct batadv_orig_node *orig_node) | |
cef63419 | 570 | { |
422d2f77 | 571 | struct batadv_hardif_neigh_node *hardif_neigh; |
cef63419 ML |
572 | |
573 | /* first check without locking to avoid the overhead */ | |
574 | hardif_neigh = batadv_hardif_neigh_get(hard_iface, neigh_addr); | |
575 | if (hardif_neigh) | |
576 | return hardif_neigh; | |
577 | ||
3111beed | 578 | return batadv_hardif_neigh_create(hard_iface, neigh_addr, orig_node); |
cef63419 ML |
579 | } |
580 | ||
581 | /** | |
582 | * batadv_hardif_neigh_get - retrieve a hardif neighbour from the list | |
583 | * @hard_iface: the interface where this neighbour is connected to | |
584 | * @neigh_addr: the address of the neighbour | |
585 | * | |
586 | * Looks for and possibly returns a neighbour belonging to this hard interface. | |
62fe710f SE |
587 | * |
588 | * Return: neighbor when found. Othwerwise NULL | |
cef63419 ML |
589 | */ |
590 | struct batadv_hardif_neigh_node * | |
591 | batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, | |
592 | const u8 *neigh_addr) | |
593 | { | |
594 | struct batadv_hardif_neigh_node *tmp_hardif_neigh, *hardif_neigh = NULL; | |
595 | ||
596 | rcu_read_lock(); | |
597 | hlist_for_each_entry_rcu(tmp_hardif_neigh, | |
598 | &hard_iface->neigh_list, list) { | |
599 | if (!batadv_compare_eth(tmp_hardif_neigh->addr, neigh_addr)) | |
600 | continue; | |
601 | ||
90f564df | 602 | if (!kref_get_unless_zero(&tmp_hardif_neigh->refcount)) |
cef63419 ML |
603 | continue; |
604 | ||
605 | hardif_neigh = tmp_hardif_neigh; | |
606 | break; | |
607 | } | |
608 | rcu_read_unlock(); | |
609 | ||
610 | return hardif_neigh; | |
611 | } | |
612 | ||
0538f759 | 613 | /** |
6f0a6b5e | 614 | * batadv_neigh_node_create - create a neigh node object |
3f32f8a6 | 615 | * @orig_node: originator object representing the neighbour |
0538f759 AQ |
616 | * @hard_iface: the interface where the neighbour is connected to |
617 | * @neigh_addr: the mac address of the neighbour interface | |
0538f759 AQ |
618 | * |
619 | * Allocates a new neigh_node object and initialises all the generic fields. | |
62fe710f | 620 | * |
6f0a6b5e | 621 | * Return: the neighbour node if found or created or NULL otherwise. |
0538f759 | 622 | */ |
6f0a6b5e ML |
623 | static struct batadv_neigh_node * |
624 | batadv_neigh_node_create(struct batadv_orig_node *orig_node, | |
625 | struct batadv_hard_iface *hard_iface, | |
626 | const u8 *neigh_addr) | |
c6c8fea2 | 627 | { |
56303d34 | 628 | struct batadv_neigh_node *neigh_node; |
cef63419 | 629 | struct batadv_hardif_neigh_node *hardif_neigh = NULL; |
c6c8fea2 | 630 | |
e123705e LL |
631 | spin_lock_bh(&orig_node->neigh_list_lock); |
632 | ||
741aa06b ML |
633 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); |
634 | if (neigh_node) | |
635 | goto out; | |
636 | ||
cef63419 | 637 | hardif_neigh = batadv_hardif_neigh_get_or_create(hard_iface, |
3111beed | 638 | neigh_addr, orig_node); |
cef63419 ML |
639 | if (!hardif_neigh) |
640 | goto out; | |
641 | ||
704509b8 | 642 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 643 | if (!neigh_node) |
7ae8b285 | 644 | goto out; |
c6c8fea2 | 645 | |
9591a79f | 646 | INIT_HLIST_NODE(&neigh_node->list); |
89652331 SW |
647 | INIT_HLIST_HEAD(&neigh_node->ifinfo_list); |
648 | spin_lock_init(&neigh_node->ifinfo_lock); | |
c6c8fea2 | 649 | |
17a86915 | 650 | kref_get(&hard_iface->refcount); |
8fdd0153 | 651 | ether_addr_copy(neigh_node->addr, neigh_addr); |
0538f759 AQ |
652 | neigh_node->if_incoming = hard_iface; |
653 | neigh_node->orig_node = orig_node; | |
e48474ed | 654 | neigh_node->last_seen = jiffies; |
0538f759 | 655 | |
abe59c65 SE |
656 | /* increment unique neighbor refcount */ |
657 | kref_get(&hardif_neigh->refcount); | |
658 | neigh_node->hardif_neigh = hardif_neigh; | |
659 | ||
1605d0d6 | 660 | /* extra reference for return */ |
77ae32e8 | 661 | kref_init(&neigh_node->refcount); |
c6c8fea2 | 662 | |
84274458 | 663 | kref_get(&neigh_node->refcount); |
741aa06b | 664 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); |
741aa06b ML |
665 | |
666 | batadv_dbg(BATADV_DBG_BATMAN, orig_node->bat_priv, | |
667 | "Creating new neighbor %pM for orig_node %pM on interface %s\n", | |
668 | neigh_addr, orig_node->orig, hard_iface->net_dev->name); | |
669 | ||
7ae8b285 | 670 | out: |
e123705e LL |
671 | spin_unlock_bh(&orig_node->neigh_list_lock); |
672 | ||
cef63419 | 673 | if (hardif_neigh) |
accadc35 | 674 | batadv_hardif_neigh_put(hardif_neigh); |
c6c8fea2 SE |
675 | return neigh_node; |
676 | } | |
677 | ||
6f0a6b5e ML |
678 | /** |
679 | * batadv_neigh_node_get_or_create - retrieve or create a neigh node object | |
680 | * @orig_node: originator object representing the neighbour | |
681 | * @hard_iface: the interface where the neighbour is connected to | |
682 | * @neigh_addr: the mac address of the neighbour interface | |
683 | * | |
684 | * Return: the neighbour node if found or created or NULL otherwise. | |
685 | */ | |
686 | struct batadv_neigh_node * | |
687 | batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, | |
688 | struct batadv_hard_iface *hard_iface, | |
689 | const u8 *neigh_addr) | |
690 | { | |
422d2f77 | 691 | struct batadv_neigh_node *neigh_node; |
6f0a6b5e ML |
692 | |
693 | /* first check without locking to avoid the overhead */ | |
694 | neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); | |
695 | if (neigh_node) | |
696 | return neigh_node; | |
697 | ||
698 | return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); | |
699 | } | |
700 | ||
dc1cbd14 | 701 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
7587405a ML |
702 | /** |
703 | * batadv_hardif_neigh_seq_print_text - print the single hop neighbour list | |
704 | * @seq: neighbour table seq_file struct | |
705 | * @offset: not used | |
706 | * | |
62fe710f | 707 | * Return: always 0 |
7587405a ML |
708 | */ |
709 | int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) | |
710 | { | |
711 | struct net_device *net_dev = (struct net_device *)seq->private; | |
712 | struct batadv_priv *bat_priv = netdev_priv(net_dev); | |
713 | struct batadv_hard_iface *primary_if; | |
714 | ||
715 | primary_if = batadv_seq_print_text_primary_if_get(seq); | |
716 | if (!primary_if) | |
717 | return 0; | |
718 | ||
719 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", | |
720 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, | |
721 | primary_if->net_dev->dev_addr, net_dev->name, | |
29824a55 | 722 | bat_priv->algo_ops->name); |
7587405a | 723 | |
82047ad7 | 724 | batadv_hardif_put(primary_if); |
7587405a | 725 | |
29824a55 | 726 | if (!bat_priv->algo_ops->neigh.print) { |
7587405a ML |
727 | seq_puts(seq, |
728 | "No printing function for this routing protocol\n"); | |
729 | return 0; | |
730 | } | |
731 | ||
29824a55 | 732 | bat_priv->algo_ops->neigh.print(bat_priv, seq); |
7587405a ML |
733 | return 0; |
734 | } | |
dc1cbd14 | 735 | #endif |
7587405a | 736 | |
85cf8c85 MS |
737 | /** |
738 | * batadv_hardif_neigh_dump - Dump to netlink the neighbor infos for a specific | |
739 | * outgoing interface | |
740 | * @msg: message to dump into | |
741 | * @cb: parameters for the dump | |
742 | * | |
743 | * Return: 0 or error value | |
744 | */ | |
745 | int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
746 | { | |
747 | struct net *net = sock_net(cb->skb->sk); | |
748 | struct net_device *soft_iface; | |
749 | struct net_device *hard_iface = NULL; | |
750 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
751 | struct batadv_priv *bat_priv; | |
752 | struct batadv_hard_iface *primary_if = NULL; | |
753 | int ret; | |
754 | int ifindex, hard_ifindex; | |
755 | ||
756 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
757 | if (!ifindex) | |
758 | return -EINVAL; | |
759 | ||
760 | soft_iface = dev_get_by_index(net, ifindex); | |
761 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
762 | ret = -ENODEV; | |
763 | goto out; | |
764 | } | |
765 | ||
766 | bat_priv = netdev_priv(soft_iface); | |
767 | ||
768 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
769 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
770 | ret = -ENOENT; | |
771 | goto out; | |
772 | } | |
773 | ||
774 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
775 | BATADV_ATTR_HARD_IFINDEX); | |
776 | if (hard_ifindex) { | |
777 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
778 | if (hard_iface) | |
779 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
780 | ||
781 | if (!hardif) { | |
782 | ret = -ENODEV; | |
783 | goto out; | |
784 | } | |
785 | ||
786 | if (hardif->soft_iface != soft_iface) { | |
787 | ret = -ENOENT; | |
788 | goto out; | |
789 | } | |
790 | } | |
791 | ||
792 | if (!bat_priv->algo_ops->neigh.dump) { | |
793 | ret = -EOPNOTSUPP; | |
794 | goto out; | |
795 | } | |
796 | ||
797 | bat_priv->algo_ops->neigh.dump(msg, cb, bat_priv, hardif); | |
798 | ||
799 | ret = msg->len; | |
800 | ||
801 | out: | |
802 | if (hardif) | |
803 | batadv_hardif_put(hardif); | |
804 | if (hard_iface) | |
805 | dev_put(hard_iface); | |
806 | if (primary_if) | |
807 | batadv_hardif_put(primary_if); | |
808 | if (soft_iface) | |
809 | dev_put(soft_iface); | |
810 | ||
811 | return ret; | |
812 | } | |
813 | ||
7351a482 | 814 | /** |
2baa753c SE |
815 | * batadv_orig_ifinfo_release - release orig_ifinfo from lists and queue for |
816 | * free after rcu grace period | |
a6ba0d34 | 817 | * @ref: kref pointer of the orig_ifinfo |
7351a482 | 818 | */ |
a6ba0d34 | 819 | static void batadv_orig_ifinfo_release(struct kref *ref) |
7351a482 | 820 | { |
a6ba0d34 | 821 | struct batadv_orig_ifinfo *orig_ifinfo; |
000c8dff | 822 | struct batadv_neigh_node *router; |
7351a482 | 823 | |
a6ba0d34 SE |
824 | orig_ifinfo = container_of(ref, struct batadv_orig_ifinfo, refcount); |
825 | ||
7351a482 | 826 | if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) |
82047ad7 | 827 | batadv_hardif_put(orig_ifinfo->if_outgoing); |
7351a482 | 828 | |
000c8dff SW |
829 | /* this is the last reference to this object */ |
830 | router = rcu_dereference_protected(orig_ifinfo->router, true); | |
831 | if (router) | |
25bb2509 | 832 | batadv_neigh_node_put(router); |
2baa753c SE |
833 | |
834 | kfree_rcu(orig_ifinfo, rcu); | |
7351a482 SW |
835 | } |
836 | ||
837 | /** | |
35f94779 | 838 | * batadv_orig_ifinfo_put - decrement the refcounter and possibly release |
deed9660 | 839 | * the orig_ifinfo |
7351a482 SW |
840 | * @orig_ifinfo: the orig_ifinfo object to release |
841 | */ | |
35f94779 | 842 | void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) |
7351a482 | 843 | { |
a6ba0d34 | 844 | kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release); |
7351a482 SW |
845 | } |
846 | ||
847 | /** | |
deed9660 SE |
848 | * batadv_orig_node_free_rcu - free the orig_node |
849 | * @rcu: rcu pointer of the orig_node | |
7351a482 | 850 | */ |
deed9660 | 851 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
7351a482 | 852 | { |
deed9660 SE |
853 | struct batadv_orig_node *orig_node; |
854 | ||
855 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); | |
856 | ||
857 | batadv_mcast_purge_orig(orig_node); | |
858 | ||
859 | batadv_frag_purge_orig(orig_node, NULL); | |
860 | ||
29824a55 AQ |
861 | if (orig_node->bat_priv->algo_ops->orig.free) |
862 | orig_node->bat_priv->algo_ops->orig.free(orig_node); | |
deed9660 SE |
863 | |
864 | kfree(orig_node->tt_buff); | |
865 | kfree(orig_node); | |
7351a482 SW |
866 | } |
867 | ||
deed9660 SE |
868 | /** |
869 | * batadv_orig_node_release - release orig_node from lists and queue for | |
870 | * free after rcu grace period | |
7c124391 | 871 | * @ref: kref pointer of the orig_node |
deed9660 | 872 | */ |
7c124391 | 873 | static void batadv_orig_node_release(struct kref *ref) |
c6c8fea2 | 874 | { |
b67bfe0d | 875 | struct hlist_node *node_tmp; |
f6c8b711 | 876 | struct batadv_neigh_node *neigh_node; |
7c124391 | 877 | struct batadv_orig_node *orig_node; |
7351a482 | 878 | struct batadv_orig_ifinfo *orig_ifinfo; |
33fbb1f3 | 879 | struct batadv_orig_node_vlan *vlan; |
cbef1e10 | 880 | struct batadv_orig_ifinfo *last_candidate; |
16b1aba8 | 881 | |
7c124391 SE |
882 | orig_node = container_of(ref, struct batadv_orig_node, refcount); |
883 | ||
f987ed6e ML |
884 | spin_lock_bh(&orig_node->neigh_list_lock); |
885 | ||
c6c8fea2 | 886 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 887 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 888 | &orig_node->neigh_list, list) { |
f987ed6e | 889 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 890 | batadv_neigh_node_put(neigh_node); |
c6c8fea2 SE |
891 | } |
892 | ||
7351a482 SW |
893 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, |
894 | &orig_node->ifinfo_list, list) { | |
895 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 896 | batadv_orig_ifinfo_put(orig_ifinfo); |
7351a482 | 897 | } |
cbef1e10 SE |
898 | |
899 | last_candidate = orig_node->last_bonding_candidate; | |
900 | orig_node->last_bonding_candidate = NULL; | |
f987ed6e ML |
901 | spin_unlock_bh(&orig_node->neigh_list_lock); |
902 | ||
cbef1e10 SE |
903 | if (last_candidate) |
904 | batadv_orig_ifinfo_put(last_candidate); | |
905 | ||
33fbb1f3 SE |
906 | spin_lock_bh(&orig_node->vlan_list_lock); |
907 | hlist_for_each_entry_safe(vlan, node_tmp, &orig_node->vlan_list, list) { | |
908 | hlist_del_rcu(&vlan->list); | |
909 | batadv_orig_node_vlan_put(vlan); | |
910 | } | |
911 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
912 | ||
d56b1705 MH |
913 | /* Free nc_nodes */ |
914 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
915 | ||
deed9660 | 916 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
c6c8fea2 SE |
917 | } |
918 | ||
72822225 | 919 | /** |
5d967310 | 920 | * batadv_orig_node_put - decrement the orig node refcounter and possibly |
deed9660 | 921 | * release it |
72822225 LL |
922 | * @orig_node: the orig node to free |
923 | */ | |
5d967310 | 924 | void batadv_orig_node_put(struct batadv_orig_node *orig_node) |
7b36e8ee | 925 | { |
7c124391 | 926 | kref_put(&orig_node->refcount, batadv_orig_node_release); |
7b36e8ee ML |
927 | } |
928 | ||
56303d34 | 929 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 930 | { |
5bf74e9c | 931 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 932 | struct hlist_node *node_tmp; |
16b1aba8 | 933 | struct hlist_head *head; |
16b1aba8 | 934 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 935 | struct batadv_orig_node *orig_node; |
6b5e971a | 936 | u32 i; |
16b1aba8 ML |
937 | |
938 | if (!hash) | |
c6c8fea2 SE |
939 | return; |
940 | ||
941 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
942 | ||
c6c8fea2 | 943 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
944 | |
945 | for (i = 0; i < hash->size; i++) { | |
946 | head = &hash->table[i]; | |
947 | list_lock = &hash->list_locks[i]; | |
948 | ||
949 | spin_lock_bh(list_lock); | |
b67bfe0d | 950 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 951 | head, hash_entry) { |
b67bfe0d | 952 | hlist_del_rcu(&orig_node->hash_entry); |
5d967310 | 953 | batadv_orig_node_put(orig_node); |
16b1aba8 ML |
954 | } |
955 | spin_unlock_bh(list_lock); | |
956 | } | |
957 | ||
1a8eaf07 | 958 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
959 | } |
960 | ||
bbad0a5e AQ |
961 | /** |
962 | * batadv_orig_node_new - creates a new orig_node | |
963 | * @bat_priv: the bat priv with all the soft interface information | |
964 | * @addr: the mac address of the originator | |
965 | * | |
966 | * Creates a new originator object and initialise all the generic fields. | |
967 | * The new object is not added to the originator list. | |
62fe710f SE |
968 | * |
969 | * Return: the newly created object or NULL on failure. | |
9cfc7bd6 | 970 | */ |
bbad0a5e | 971 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
6b5e971a | 972 | const u8 *addr) |
c6c8fea2 | 973 | { |
56303d34 | 974 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 975 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 976 | unsigned long reset_time; |
bbad0a5e | 977 | int i; |
c6c8fea2 | 978 | |
39c75a51 SE |
979 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
980 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 981 | |
704509b8 | 982 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
983 | if (!orig_node) |
984 | return NULL; | |
985 | ||
9591a79f | 986 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
d0fa4f3f | 987 | INIT_HLIST_HEAD(&orig_node->vlan_list); |
7351a482 | 988 | INIT_HLIST_HEAD(&orig_node->ifinfo_list); |
f3e0008f | 989 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 990 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 991 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 992 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 993 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 994 | |
d56b1705 MH |
995 | batadv_nc_init_orig(orig_node); |
996 | ||
7b36e8ee | 997 | /* extra reference for return */ |
7c124391 | 998 | kref_init(&orig_node->refcount); |
c6c8fea2 | 999 | |
16b1aba8 | 1000 | orig_node->bat_priv = bat_priv; |
8fdd0153 | 1001 | ether_addr_copy(orig_node->orig, addr); |
785ea114 | 1002 | batadv_dat_init_orig_node_addr(orig_node); |
c8c991bf | 1003 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 1004 | orig_node->tt_buff = NULL; |
a73105b8 | 1005 | orig_node->tt_buff_len = 0; |
2c667a33 | 1006 | orig_node->last_seen = jiffies; |
42d0b044 SE |
1007 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
1008 | orig_node->bcast_seqno_reset = reset_time; | |
8a4023c5 | 1009 | |
60432d75 LL |
1010 | #ifdef CONFIG_BATMAN_ADV_MCAST |
1011 | orig_node->mcast_flags = BATADV_NO_FLAGS; | |
8a4023c5 LL |
1012 | INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node); |
1013 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node); | |
1014 | INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node); | |
1015 | spin_lock_init(&orig_node->mcast_handler_lock); | |
60432d75 | 1016 | #endif |
c6c8fea2 | 1017 | |
7ea7b4a1 AQ |
1018 | /* create a vlan object for the "untagged" LAN */ |
1019 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
1020 | if (!vlan) | |
1021 | goto free_orig_node; | |
1022 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
1023 | * Immediately release vlan since it is not needed anymore in this | |
1024 | * context | |
1025 | */ | |
21754e25 | 1026 | batadv_orig_node_vlan_put(vlan); |
7ea7b4a1 | 1027 | |
610bfc6b | 1028 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
176e5b77 | 1029 | INIT_HLIST_HEAD(&orig_node->fragments[i].fragment_list); |
610bfc6b MH |
1030 | spin_lock_init(&orig_node->fragments[i].lock); |
1031 | orig_node->fragments[i].size = 0; | |
1032 | } | |
1033 | ||
c6c8fea2 | 1034 | return orig_node; |
c6c8fea2 SE |
1035 | free_orig_node: |
1036 | kfree(orig_node); | |
1037 | return NULL; | |
1038 | } | |
1039 | ||
709de13f SW |
1040 | /** |
1041 | * batadv_purge_neigh_ifinfo - purge obsolete ifinfo entries from neighbor | |
1042 | * @bat_priv: the bat priv with all the soft interface information | |
1043 | * @neigh: orig node which is to be checked | |
1044 | */ | |
1045 | static void | |
1046 | batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, | |
1047 | struct batadv_neigh_node *neigh) | |
1048 | { | |
1049 | struct batadv_neigh_ifinfo *neigh_ifinfo; | |
1050 | struct batadv_hard_iface *if_outgoing; | |
1051 | struct hlist_node *node_tmp; | |
1052 | ||
1053 | spin_lock_bh(&neigh->ifinfo_lock); | |
1054 | ||
1055 | /* for all ifinfo objects for this neighinator */ | |
1056 | hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, | |
1057 | &neigh->ifinfo_list, list) { | |
1058 | if_outgoing = neigh_ifinfo->if_outgoing; | |
1059 | ||
1060 | /* always keep the default interface */ | |
1061 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1062 | continue; | |
1063 | ||
1064 | /* don't purge if the interface is not (going) down */ | |
1065 | if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && | |
1066 | (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && | |
1067 | (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) | |
1068 | continue; | |
1069 | ||
1070 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1071 | "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", | |
1072 | neigh->addr, if_outgoing->net_dev->name); | |
1073 | ||
1074 | hlist_del_rcu(&neigh_ifinfo->list); | |
044fa3ae | 1075 | batadv_neigh_ifinfo_put(neigh_ifinfo); |
709de13f SW |
1076 | } |
1077 | ||
1078 | spin_unlock_bh(&neigh->ifinfo_lock); | |
1079 | } | |
1080 | ||
7351a482 SW |
1081 | /** |
1082 | * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator | |
1083 | * @bat_priv: the bat priv with all the soft interface information | |
1084 | * @orig_node: orig node which is to be checked | |
1085 | * | |
62fe710f | 1086 | * Return: true if any ifinfo entry was purged, false otherwise. |
7351a482 SW |
1087 | */ |
1088 | static bool | |
1089 | batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, | |
1090 | struct batadv_orig_node *orig_node) | |
1091 | { | |
1092 | struct batadv_orig_ifinfo *orig_ifinfo; | |
1093 | struct batadv_hard_iface *if_outgoing; | |
1094 | struct hlist_node *node_tmp; | |
1095 | bool ifinfo_purged = false; | |
1096 | ||
1097 | spin_lock_bh(&orig_node->neigh_list_lock); | |
1098 | ||
1099 | /* for all ifinfo objects for this originator */ | |
1100 | hlist_for_each_entry_safe(orig_ifinfo, node_tmp, | |
1101 | &orig_node->ifinfo_list, list) { | |
1102 | if_outgoing = orig_ifinfo->if_outgoing; | |
1103 | ||
1104 | /* always keep the default interface */ | |
1105 | if (if_outgoing == BATADV_IF_DEFAULT) | |
1106 | continue; | |
1107 | ||
1108 | /* don't purge if the interface is not (going) down */ | |
1109 | if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && | |
1110 | (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && | |
1111 | (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) | |
1112 | continue; | |
1113 | ||
1114 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, | |
1115 | "router/ifinfo purge: originator %pM, iface: %s\n", | |
1116 | orig_node->orig, if_outgoing->net_dev->name); | |
1117 | ||
1118 | ifinfo_purged = true; | |
1119 | ||
1120 | hlist_del_rcu(&orig_ifinfo->list); | |
35f94779 | 1121 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 SW |
1122 | if (orig_node->last_bonding_candidate == orig_ifinfo) { |
1123 | orig_node->last_bonding_candidate = NULL; | |
35f94779 | 1124 | batadv_orig_ifinfo_put(orig_ifinfo); |
f3b3d901 | 1125 | } |
7351a482 SW |
1126 | } |
1127 | ||
1128 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
1129 | ||
1130 | return ifinfo_purged; | |
1131 | } | |
1132 | ||
89652331 SW |
1133 | /** |
1134 | * batadv_purge_orig_neighbors - purges neighbors from originator | |
1135 | * @bat_priv: the bat priv with all the soft interface information | |
1136 | * @orig_node: orig node which is to be checked | |
1137 | * | |
62fe710f | 1138 | * Return: true if any neighbor was purged, false otherwise |
89652331 | 1139 | */ |
56303d34 SE |
1140 | static bool |
1141 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
89652331 | 1142 | struct batadv_orig_node *orig_node) |
c6c8fea2 | 1143 | { |
b67bfe0d | 1144 | struct hlist_node *node_tmp; |
56303d34 | 1145 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 1146 | bool neigh_purged = false; |
0b0094e0 | 1147 | unsigned long last_seen; |
56303d34 | 1148 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 1149 | |
f987ed6e ML |
1150 | spin_lock_bh(&orig_node->neigh_list_lock); |
1151 | ||
c6c8fea2 | 1152 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 1153 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 1154 | &orig_node->neigh_list, list) { |
1eda58bf SE |
1155 | last_seen = neigh_node->last_seen; |
1156 | if_incoming = neigh_node->if_incoming; | |
1157 | ||
42d0b044 | 1158 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
1159 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
1160 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
1161 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
1162 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
1163 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
1164 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 1165 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1166 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
1167 | orig_node->orig, neigh_node->addr, | |
1168 | if_incoming->net_dev->name); | |
c6c8fea2 | 1169 | else |
39c75a51 | 1170 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1171 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
1172 | orig_node->orig, neigh_node->addr, | |
1173 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
1174 | |
1175 | neigh_purged = true; | |
9591a79f | 1176 | |
f987ed6e | 1177 | hlist_del_rcu(&neigh_node->list); |
25bb2509 | 1178 | batadv_neigh_node_put(neigh_node); |
709de13f SW |
1179 | } else { |
1180 | /* only necessary if not the whole neighbor is to be | |
1181 | * deleted, but some interface has been removed. | |
1182 | */ | |
1183 | batadv_purge_neigh_ifinfo(bat_priv, neigh_node); | |
c6c8fea2 SE |
1184 | } |
1185 | } | |
f987ed6e ML |
1186 | |
1187 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
1188 | return neigh_purged; |
1189 | } | |
1190 | ||
89652331 SW |
1191 | /** |
1192 | * batadv_find_best_neighbor - finds the best neighbor after purging | |
1193 | * @bat_priv: the bat priv with all the soft interface information | |
1194 | * @orig_node: orig node which is to be checked | |
1195 | * @if_outgoing: the interface for which the metric should be compared | |
1196 | * | |
62fe710f | 1197 | * Return: the current best neighbor, with refcount increased. |
89652331 SW |
1198 | */ |
1199 | static struct batadv_neigh_node * | |
1200 | batadv_find_best_neighbor(struct batadv_priv *bat_priv, | |
1201 | struct batadv_orig_node *orig_node, | |
1202 | struct batadv_hard_iface *if_outgoing) | |
1203 | { | |
1204 | struct batadv_neigh_node *best = NULL, *neigh; | |
29824a55 | 1205 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
89652331 SW |
1206 | |
1207 | rcu_read_lock(); | |
1208 | hlist_for_each_entry_rcu(neigh, &orig_node->neigh_list, list) { | |
29824a55 AQ |
1209 | if (best && (bao->neigh.cmp(neigh, if_outgoing, best, |
1210 | if_outgoing) <= 0)) | |
89652331 SW |
1211 | continue; |
1212 | ||
77ae32e8 | 1213 | if (!kref_get_unless_zero(&neigh->refcount)) |
89652331 SW |
1214 | continue; |
1215 | ||
1216 | if (best) | |
25bb2509 | 1217 | batadv_neigh_node_put(best); |
89652331 SW |
1218 | |
1219 | best = neigh; | |
1220 | } | |
1221 | rcu_read_unlock(); | |
1222 | ||
1223 | return best; | |
1224 | } | |
1225 | ||
7351a482 SW |
1226 | /** |
1227 | * batadv_purge_orig_node - purges obsolete information from an orig_node | |
1228 | * @bat_priv: the bat priv with all the soft interface information | |
1229 | * @orig_node: orig node which is to be checked | |
1230 | * | |
1231 | * This function checks if the orig_node or substructures of it have become | |
1232 | * obsolete, and purges this information if that's the case. | |
1233 | * | |
62fe710f | 1234 | * Return: true if the orig_node is to be removed, false otherwise. |
7351a482 | 1235 | */ |
56303d34 SE |
1236 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
1237 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 1238 | { |
56303d34 | 1239 | struct batadv_neigh_node *best_neigh_node; |
7351a482 | 1240 | struct batadv_hard_iface *hard_iface; |
7b955a9f | 1241 | bool changed_ifinfo, changed_neigh; |
c6c8fea2 | 1242 | |
42d0b044 SE |
1243 | if (batadv_has_timed_out(orig_node->last_seen, |
1244 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 1245 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
1246 | "Originator timeout: originator %pM, last_seen %u\n", |
1247 | orig_node->orig, | |
1248 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 | 1249 | return true; |
c6c8fea2 | 1250 | } |
7b955a9f SW |
1251 | changed_ifinfo = batadv_purge_orig_ifinfo(bat_priv, orig_node); |
1252 | changed_neigh = batadv_purge_orig_neighbors(bat_priv, orig_node); | |
7351a482 | 1253 | |
7b955a9f | 1254 | if (!changed_ifinfo && !changed_neigh) |
89652331 SW |
1255 | return false; |
1256 | ||
7351a482 | 1257 | /* first for NULL ... */ |
89652331 SW |
1258 | best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, |
1259 | BATADV_IF_DEFAULT); | |
7351a482 SW |
1260 | batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, |
1261 | best_neigh_node); | |
89652331 | 1262 | if (best_neigh_node) |
25bb2509 | 1263 | batadv_neigh_node_put(best_neigh_node); |
c6c8fea2 | 1264 | |
7351a482 SW |
1265 | /* ... then for all other interfaces. */ |
1266 | rcu_read_lock(); | |
1267 | list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { | |
1268 | if (hard_iface->if_status != BATADV_IF_ACTIVE) | |
1269 | continue; | |
1270 | ||
1271 | if (hard_iface->soft_iface != bat_priv->soft_iface) | |
1272 | continue; | |
1273 | ||
27353446 SE |
1274 | if (!kref_get_unless_zero(&hard_iface->refcount)) |
1275 | continue; | |
1276 | ||
7351a482 SW |
1277 | best_neigh_node = batadv_find_best_neighbor(bat_priv, |
1278 | orig_node, | |
1279 | hard_iface); | |
1280 | batadv_update_route(bat_priv, orig_node, hard_iface, | |
1281 | best_neigh_node); | |
1282 | if (best_neigh_node) | |
25bb2509 | 1283 | batadv_neigh_node_put(best_neigh_node); |
27353446 SE |
1284 | |
1285 | batadv_hardif_put(hard_iface); | |
7351a482 SW |
1286 | } |
1287 | rcu_read_unlock(); | |
1288 | ||
c6c8fea2 SE |
1289 | return false; |
1290 | } | |
1291 | ||
56303d34 | 1292 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 1293 | { |
5bf74e9c | 1294 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 1295 | struct hlist_node *node_tmp; |
c6c8fea2 | 1296 | struct hlist_head *head; |
fb778ea1 | 1297 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 1298 | struct batadv_orig_node *orig_node; |
6b5e971a | 1299 | u32 i; |
c6c8fea2 SE |
1300 | |
1301 | if (!hash) | |
1302 | return; | |
1303 | ||
c6c8fea2 SE |
1304 | /* for all origins... */ |
1305 | for (i = 0; i < hash->size; i++) { | |
1306 | head = &hash->table[i]; | |
fb778ea1 | 1307 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 1308 | |
fb778ea1 | 1309 | spin_lock_bh(list_lock); |
b67bfe0d | 1310 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 1311 | head, hash_entry) { |
03fc7f86 | 1312 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 1313 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 1314 | hlist_del_rcu(&orig_node->hash_entry); |
9d31b3ce LL |
1315 | batadv_tt_global_del_orig(orig_node->bat_priv, |
1316 | orig_node, -1, | |
1317 | "originator timed out"); | |
5d967310 | 1318 | batadv_orig_node_put(orig_node); |
fb778ea1 | 1319 | continue; |
c6c8fea2 | 1320 | } |
610bfc6b MH |
1321 | |
1322 | batadv_frag_purge_orig(orig_node, | |
1323 | batadv_frag_check_entry); | |
c6c8fea2 | 1324 | } |
fb778ea1 | 1325 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
1326 | } |
1327 | ||
7cf06bc6 | 1328 | batadv_gw_election(bat_priv); |
c6c8fea2 SE |
1329 | } |
1330 | ||
03fc7f86 | 1331 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 1332 | { |
56303d34 SE |
1333 | struct delayed_work *delayed_work; |
1334 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 1335 | |
4ba4bc0f | 1336 | delayed_work = to_delayed_work(work); |
56303d34 | 1337 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); |
03fc7f86 | 1338 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
1339 | queue_delayed_work(batadv_event_workqueue, |
1340 | &bat_priv->orig_work, | |
1341 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
1342 | } |
1343 | ||
56303d34 | 1344 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 1345 | { |
03fc7f86 | 1346 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
1347 | } |
1348 | ||
dc1cbd14 | 1349 | #ifdef CONFIG_BATMAN_ADV_DEBUGFS |
7d211efc | 1350 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
1351 | { |
1352 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 1353 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 1354 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 1355 | |
30da63a6 ML |
1356 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
1357 | if (!primary_if) | |
737a2a22 | 1358 | return 0; |
c6c8fea2 | 1359 | |
737a2a22 | 1360 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 1361 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 | 1362 | primary_if->net_dev->dev_addr, net_dev->name, |
29824a55 | 1363 | bat_priv->algo_ops->name); |
c6c8fea2 | 1364 | |
82047ad7 | 1365 | batadv_hardif_put(primary_if); |
c6c8fea2 | 1366 | |
29824a55 | 1367 | if (!bat_priv->algo_ops->orig.print) { |
737a2a22 AQ |
1368 | seq_puts(seq, |
1369 | "No printing function for this routing protocol\n"); | |
1370 | return 0; | |
c6c8fea2 SE |
1371 | } |
1372 | ||
29824a55 | 1373 | bat_priv->algo_ops->orig.print(bat_priv, seq, BATADV_IF_DEFAULT); |
c6c8fea2 | 1374 | |
30da63a6 | 1375 | return 0; |
c6c8fea2 SE |
1376 | } |
1377 | ||
cb1c92ec SW |
1378 | /** |
1379 | * batadv_orig_hardif_seq_print_text - writes originator infos for a specific | |
1380 | * outgoing interface | |
1381 | * @seq: debugfs table seq_file struct | |
1382 | * @offset: not used | |
1383 | * | |
62fe710f | 1384 | * Return: 0 |
cb1c92ec SW |
1385 | */ |
1386 | int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) | |
1387 | { | |
1388 | struct net_device *net_dev = (struct net_device *)seq->private; | |
1389 | struct batadv_hard_iface *hard_iface; | |
1390 | struct batadv_priv *bat_priv; | |
1391 | ||
1392 | hard_iface = batadv_hardif_get_by_netdev(net_dev); | |
1393 | ||
1394 | if (!hard_iface || !hard_iface->soft_iface) { | |
1395 | seq_puts(seq, "Interface not known to B.A.T.M.A.N.\n"); | |
1396 | goto out; | |
1397 | } | |
1398 | ||
1399 | bat_priv = netdev_priv(hard_iface->soft_iface); | |
29824a55 | 1400 | if (!bat_priv->algo_ops->orig.print) { |
cb1c92ec SW |
1401 | seq_puts(seq, |
1402 | "No printing function for this routing protocol\n"); | |
1403 | goto out; | |
1404 | } | |
1405 | ||
1406 | if (hard_iface->if_status != BATADV_IF_ACTIVE) { | |
1407 | seq_puts(seq, "Interface not active\n"); | |
1408 | goto out; | |
1409 | } | |
1410 | ||
1411 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, IF/MAC: %s/%pM (%s %s)]\n", | |
1412 | BATADV_SOURCE_VERSION, hard_iface->net_dev->name, | |
1413 | hard_iface->net_dev->dev_addr, | |
29824a55 | 1414 | hard_iface->soft_iface->name, bat_priv->algo_ops->name); |
cb1c92ec | 1415 | |
29824a55 | 1416 | bat_priv->algo_ops->orig.print(bat_priv, seq, hard_iface); |
cb1c92ec SW |
1417 | |
1418 | out: | |
16a41423 | 1419 | if (hard_iface) |
82047ad7 | 1420 | batadv_hardif_put(hard_iface); |
cb1c92ec SW |
1421 | return 0; |
1422 | } | |
dc1cbd14 | 1423 | #endif |
cb1c92ec | 1424 | |
85cf8c85 MS |
1425 | /** |
1426 | * batadv_orig_dump - Dump to netlink the originator infos for a specific | |
1427 | * outgoing interface | |
1428 | * @msg: message to dump into | |
1429 | * @cb: parameters for the dump | |
1430 | * | |
1431 | * Return: 0 or error value | |
1432 | */ | |
1433 | int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) | |
1434 | { | |
1435 | struct net *net = sock_net(cb->skb->sk); | |
1436 | struct net_device *soft_iface; | |
1437 | struct net_device *hard_iface = NULL; | |
1438 | struct batadv_hard_iface *hardif = BATADV_IF_DEFAULT; | |
1439 | struct batadv_priv *bat_priv; | |
1440 | struct batadv_hard_iface *primary_if = NULL; | |
1441 | int ret; | |
1442 | int ifindex, hard_ifindex; | |
1443 | ||
1444 | ifindex = batadv_netlink_get_ifindex(cb->nlh, BATADV_ATTR_MESH_IFINDEX); | |
1445 | if (!ifindex) | |
1446 | return -EINVAL; | |
1447 | ||
1448 | soft_iface = dev_get_by_index(net, ifindex); | |
1449 | if (!soft_iface || !batadv_softif_is_valid(soft_iface)) { | |
1450 | ret = -ENODEV; | |
1451 | goto out; | |
1452 | } | |
1453 | ||
1454 | bat_priv = netdev_priv(soft_iface); | |
1455 | ||
1456 | primary_if = batadv_primary_if_get_selected(bat_priv); | |
1457 | if (!primary_if || primary_if->if_status != BATADV_IF_ACTIVE) { | |
1458 | ret = -ENOENT; | |
1459 | goto out; | |
1460 | } | |
1461 | ||
1462 | hard_ifindex = batadv_netlink_get_ifindex(cb->nlh, | |
1463 | BATADV_ATTR_HARD_IFINDEX); | |
1464 | if (hard_ifindex) { | |
1465 | hard_iface = dev_get_by_index(net, hard_ifindex); | |
1466 | if (hard_iface) | |
1467 | hardif = batadv_hardif_get_by_netdev(hard_iface); | |
1468 | ||
1469 | if (!hardif) { | |
1470 | ret = -ENODEV; | |
1471 | goto out; | |
1472 | } | |
1473 | ||
1474 | if (hardif->soft_iface != soft_iface) { | |
1475 | ret = -ENOENT; | |
1476 | goto out; | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | if (!bat_priv->algo_ops->orig.dump) { | |
1481 | ret = -EOPNOTSUPP; | |
1482 | goto out; | |
1483 | } | |
1484 | ||
1485 | bat_priv->algo_ops->orig.dump(msg, cb, bat_priv, hardif); | |
1486 | ||
1487 | ret = msg->len; | |
1488 | ||
1489 | out: | |
1490 | if (hardif) | |
1491 | batadv_hardif_put(hardif); | |
1492 | if (hard_iface) | |
1493 | dev_put(hard_iface); | |
1494 | if (primary_if) | |
1495 | batadv_hardif_put(primary_if); | |
1496 | if (soft_iface) | |
1497 | dev_put(soft_iface); | |
1498 | ||
1499 | return ret; | |
1500 | } | |
1501 | ||
56303d34 SE |
1502 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
1503 | int max_if_num) | |
c6c8fea2 | 1504 | { |
56303d34 | 1505 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
29824a55 | 1506 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
5bf74e9c | 1507 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1508 | struct hlist_head *head; |
56303d34 | 1509 | struct batadv_orig_node *orig_node; |
6b5e971a | 1510 | u32 i; |
c90681b8 | 1511 | int ret; |
c6c8fea2 SE |
1512 | |
1513 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1514 | * if_num |
1515 | */ | |
c6c8fea2 SE |
1516 | for (i = 0; i < hash->size; i++) { |
1517 | head = &hash->table[i]; | |
1518 | ||
fb778ea1 | 1519 | rcu_read_lock(); |
b67bfe0d | 1520 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd | 1521 | ret = 0; |
29824a55 AQ |
1522 | if (bao->orig.add_if) |
1523 | ret = bao->orig.add_if(orig_node, max_if_num); | |
5346c35e | 1524 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1525 | goto err; |
1526 | } | |
fb778ea1 | 1527 | rcu_read_unlock(); |
c6c8fea2 SE |
1528 | } |
1529 | ||
c6c8fea2 SE |
1530 | return 0; |
1531 | ||
1532 | err: | |
fb778ea1 | 1533 | rcu_read_unlock(); |
c6c8fea2 SE |
1534 | return -ENOMEM; |
1535 | } | |
1536 | ||
56303d34 SE |
1537 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
1538 | int max_if_num) | |
c6c8fea2 | 1539 | { |
56303d34 | 1540 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 1541 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 1542 | struct hlist_head *head; |
56303d34 SE |
1543 | struct batadv_hard_iface *hard_iface_tmp; |
1544 | struct batadv_orig_node *orig_node; | |
29824a55 | 1545 | struct batadv_algo_ops *bao = bat_priv->algo_ops; |
6b5e971a | 1546 | u32 i; |
c90681b8 | 1547 | int ret; |
c6c8fea2 SE |
1548 | |
1549 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
1550 | * if_num |
1551 | */ | |
c6c8fea2 SE |
1552 | for (i = 0; i < hash->size; i++) { |
1553 | head = &hash->table[i]; | |
1554 | ||
fb778ea1 | 1555 | rcu_read_lock(); |
b67bfe0d | 1556 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd | 1557 | ret = 0; |
29824a55 AQ |
1558 | if (bao->orig.del_if) |
1559 | ret = bao->orig.del_if(orig_node, max_if_num, | |
1560 | hard_iface->if_num); | |
5346c35e | 1561 | if (ret == -ENOMEM) |
c6c8fea2 SE |
1562 | goto err; |
1563 | } | |
fb778ea1 | 1564 | rcu_read_unlock(); |
c6c8fea2 SE |
1565 | } |
1566 | ||
1567 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
1568 | rcu_read_lock(); | |
3193e8fd | 1569 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 1570 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
1571 | continue; |
1572 | ||
e6c10f43 | 1573 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
1574 | continue; |
1575 | ||
e6c10f43 | 1576 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
1577 | continue; |
1578 | ||
e6c10f43 ML |
1579 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
1580 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
1581 | } |
1582 | rcu_read_unlock(); | |
1583 | ||
e6c10f43 | 1584 | hard_iface->if_num = -1; |
c6c8fea2 SE |
1585 | return 0; |
1586 | ||
1587 | err: | |
fb778ea1 | 1588 | rcu_read_unlock(); |
c6c8fea2 SE |
1589 | return -ENOMEM; |
1590 | } |