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0b873931 | 1 | /* Copyright (C) 2009-2013 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 | ||
c6c8fea2 | 18 | #include "main.h" |
785ea114 | 19 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
20 | #include "originator.h" |
21 | #include "hash.h" | |
22 | #include "translation-table.h" | |
23 | #include "routing.h" | |
24 | #include "gateway_client.h" | |
25 | #include "hard-interface.h" | |
c6c8fea2 | 26 | #include "soft-interface.h" |
23721387 | 27 | #include "bridge_loop_avoidance.h" |
d56b1705 | 28 | #include "network-coding.h" |
610bfc6b | 29 | #include "fragmentation.h" |
c6c8fea2 | 30 | |
dec05074 AQ |
31 | /* hash class keys */ |
32 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
33 | ||
03fc7f86 | 34 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 35 | |
b8e2dd13 | 36 | /* returns 1 if they are the same originator */ |
bbad0a5e | 37 | int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 38 | { |
56303d34 SE |
39 | const void *data1 = container_of(node, struct batadv_orig_node, |
40 | hash_entry); | |
b8e2dd13 | 41 | |
323813ed | 42 | return batadv_compare_eth(data1, data2); |
b8e2dd13 SE |
43 | } |
44 | ||
7ea7b4a1 AQ |
45 | /** |
46 | * batadv_orig_node_vlan_get - get an orig_node_vlan object | |
47 | * @orig_node: the originator serving the VLAN | |
48 | * @vid: the VLAN identifier | |
49 | * | |
50 | * Returns the vlan object identified by vid and belonging to orig_node or NULL | |
51 | * if it does not exist. | |
52 | */ | |
53 | struct batadv_orig_node_vlan * | |
54 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
55 | unsigned short vid) | |
56 | { | |
57 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
58 | ||
59 | rcu_read_lock(); | |
60 | list_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { | |
61 | if (tmp->vid != vid) | |
62 | continue; | |
63 | ||
64 | if (!atomic_inc_not_zero(&tmp->refcount)) | |
65 | continue; | |
66 | ||
67 | vlan = tmp; | |
68 | ||
69 | break; | |
70 | } | |
71 | rcu_read_unlock(); | |
72 | ||
73 | return vlan; | |
74 | } | |
75 | ||
76 | /** | |
77 | * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan | |
78 | * object | |
79 | * @orig_node: the originator serving the VLAN | |
80 | * @vid: the VLAN identifier | |
81 | * | |
82 | * Returns NULL in case of failure or the vlan object identified by vid and | |
83 | * belonging to orig_node otherwise. The object is created and added to the list | |
84 | * if it does not exist. | |
85 | * | |
86 | * The object is returned with refcounter increased by 1. | |
87 | */ | |
88 | struct batadv_orig_node_vlan * | |
89 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
90 | unsigned short vid) | |
91 | { | |
92 | struct batadv_orig_node_vlan *vlan; | |
93 | ||
94 | spin_lock_bh(&orig_node->vlan_list_lock); | |
95 | ||
96 | /* first look if an object for this vid already exists */ | |
97 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
98 | if (vlan) | |
99 | goto out; | |
100 | ||
101 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
102 | if (!vlan) | |
103 | goto out; | |
104 | ||
105 | atomic_set(&vlan->refcount, 2); | |
106 | vlan->vid = vid; | |
107 | ||
108 | list_add_rcu(&vlan->list, &orig_node->vlan_list); | |
109 | ||
110 | out: | |
111 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
112 | ||
113 | return vlan; | |
114 | } | |
115 | ||
116 | /** | |
117 | * batadv_orig_node_vlan_free_ref - decrement the refcounter and possibly free | |
118 | * the originator-vlan object | |
119 | * @orig_vlan: the originator-vlan object to release | |
120 | */ | |
121 | void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan *orig_vlan) | |
122 | { | |
123 | if (atomic_dec_and_test(&orig_vlan->refcount)) | |
124 | kfree_rcu(orig_vlan, rcu); | |
125 | } | |
126 | ||
56303d34 | 127 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
128 | { |
129 | if (bat_priv->orig_hash) | |
5346c35e | 130 | return 0; |
c6c8fea2 | 131 | |
1a8eaf07 | 132 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
133 | |
134 | if (!bat_priv->orig_hash) | |
135 | goto err; | |
136 | ||
dec05074 AQ |
137 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
138 | &batadv_orig_hash_lock_class_key); | |
139 | ||
72414442 AQ |
140 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
141 | queue_delayed_work(batadv_event_workqueue, | |
142 | &bat_priv->orig_work, | |
143 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
144 | ||
5346c35e | 145 | return 0; |
c6c8fea2 SE |
146 | |
147 | err: | |
5346c35e | 148 | return -ENOMEM; |
c6c8fea2 SE |
149 | } |
150 | ||
56303d34 | 151 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 152 | { |
44524fcd | 153 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 154 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
155 | } |
156 | ||
e1a5382f | 157 | /* increases the refcounter of a found router */ |
56303d34 SE |
158 | struct batadv_neigh_node * |
159 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 160 | { |
56303d34 | 161 | struct batadv_neigh_node *router; |
e1a5382f LL |
162 | |
163 | rcu_read_lock(); | |
164 | router = rcu_dereference(orig_node->router); | |
165 | ||
166 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
167 | router = NULL; | |
168 | ||
169 | rcu_read_unlock(); | |
170 | return router; | |
171 | } | |
172 | ||
0538f759 AQ |
173 | /** |
174 | * batadv_neigh_node_new - create and init a new neigh_node object | |
175 | * @hard_iface: the interface where the neighbour is connected to | |
176 | * @neigh_addr: the mac address of the neighbour interface | |
177 | * @orig_node: originator object representing the neighbour | |
178 | * | |
179 | * Allocates a new neigh_node object and initialises all the generic fields. | |
180 | * Returns the new object or NULL on failure. | |
181 | */ | |
56303d34 SE |
182 | struct batadv_neigh_node * |
183 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
0538f759 AQ |
184 | const uint8_t *neigh_addr, |
185 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 186 | { |
56303d34 | 187 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 188 | |
704509b8 | 189 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 190 | if (!neigh_node) |
7ae8b285 | 191 | goto out; |
c6c8fea2 | 192 | |
9591a79f | 193 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 194 | |
7ae8b285 | 195 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
0538f759 AQ |
196 | neigh_node->if_incoming = hard_iface; |
197 | neigh_node->orig_node = orig_node; | |
198 | ||
1605d0d6 ML |
199 | /* extra reference for return */ |
200 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 201 | |
7ae8b285 | 202 | out: |
c6c8fea2 SE |
203 | return neigh_node; |
204 | } | |
205 | ||
03fc7f86 | 206 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 207 | { |
b67bfe0d | 208 | struct hlist_node *node_tmp; |
f6c8b711 | 209 | struct batadv_neigh_node *neigh_node; |
56303d34 | 210 | struct batadv_orig_node *orig_node; |
16b1aba8 | 211 | |
56303d34 | 212 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 213 | |
f987ed6e ML |
214 | spin_lock_bh(&orig_node->neigh_list_lock); |
215 | ||
c6c8fea2 | 216 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 217 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 218 | &orig_node->neigh_list, list) { |
f987ed6e | 219 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 220 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
221 | } |
222 | ||
f987ed6e ML |
223 | spin_unlock_bh(&orig_node->neigh_list_lock); |
224 | ||
d56b1705 MH |
225 | /* Free nc_nodes */ |
226 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
227 | ||
610bfc6b MH |
228 | batadv_frag_purge_orig(orig_node, NULL); |
229 | ||
95fb130d | 230 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, -1, |
08c36d3e | 231 | "originator timed out"); |
c6c8fea2 | 232 | |
d0015fdd AQ |
233 | if (orig_node->bat_priv->bat_algo_ops->bat_orig_free) |
234 | orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node); | |
235 | ||
a73105b8 | 236 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
237 | kfree(orig_node); |
238 | } | |
239 | ||
72822225 LL |
240 | /** |
241 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
242 | * schedule an rcu callback for freeing it | |
243 | * @orig_node: the orig node to free | |
244 | */ | |
56303d34 | 245 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
246 | { |
247 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 248 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
249 | } |
250 | ||
72822225 LL |
251 | /** |
252 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
253 | * possibly free it (without rcu callback) | |
254 | * @orig_node: the orig node to free | |
255 | */ | |
256 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
257 | { | |
258 | if (atomic_dec_and_test(&orig_node->refcount)) | |
259 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
260 | } | |
261 | ||
56303d34 | 262 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 263 | { |
5bf74e9c | 264 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 265 | struct hlist_node *node_tmp; |
16b1aba8 | 266 | struct hlist_head *head; |
16b1aba8 | 267 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 268 | struct batadv_orig_node *orig_node; |
c90681b8 | 269 | uint32_t i; |
16b1aba8 ML |
270 | |
271 | if (!hash) | |
c6c8fea2 SE |
272 | return; |
273 | ||
274 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
275 | ||
c6c8fea2 | 276 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
277 | |
278 | for (i = 0; i < hash->size; i++) { | |
279 | head = &hash->table[i]; | |
280 | list_lock = &hash->list_locks[i]; | |
281 | ||
282 | spin_lock_bh(list_lock); | |
b67bfe0d | 283 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 284 | head, hash_entry) { |
b67bfe0d | 285 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 286 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
287 | } |
288 | spin_unlock_bh(list_lock); | |
289 | } | |
290 | ||
1a8eaf07 | 291 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
292 | } |
293 | ||
bbad0a5e AQ |
294 | /** |
295 | * batadv_orig_node_new - creates a new orig_node | |
296 | * @bat_priv: the bat priv with all the soft interface information | |
297 | * @addr: the mac address of the originator | |
298 | * | |
299 | * Creates a new originator object and initialise all the generic fields. | |
300 | * The new object is not added to the originator list. | |
301 | * Returns the newly created object or NULL on failure. | |
9cfc7bd6 | 302 | */ |
bbad0a5e | 303 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
56303d34 | 304 | const uint8_t *addr) |
c6c8fea2 | 305 | { |
56303d34 | 306 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 307 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 308 | unsigned long reset_time; |
bbad0a5e | 309 | int i; |
c6c8fea2 | 310 | |
39c75a51 SE |
311 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
312 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 313 | |
704509b8 | 314 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
315 | if (!orig_node) |
316 | return NULL; | |
317 | ||
9591a79f | 318 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
7ea7b4a1 | 319 | INIT_LIST_HEAD(&orig_node->vlan_list); |
f3e0008f | 320 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 321 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 322 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 323 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 324 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 325 | |
d56b1705 MH |
326 | batadv_nc_init_orig(orig_node); |
327 | ||
7b36e8ee ML |
328 | /* extra reference for return */ |
329 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 330 | |
17071578 | 331 | orig_node->tt_initialised = false; |
16b1aba8 | 332 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 333 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 334 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 335 | orig_node->router = NULL; |
c8c991bf | 336 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 337 | orig_node->tt_buff = NULL; |
a73105b8 | 338 | orig_node->tt_buff_len = 0; |
42d0b044 SE |
339 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
340 | orig_node->bcast_seqno_reset = reset_time; | |
341 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 342 | |
7ea7b4a1 AQ |
343 | /* create a vlan object for the "untagged" LAN */ |
344 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
345 | if (!vlan) | |
346 | goto free_orig_node; | |
347 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
348 | * Immediately release vlan since it is not needed anymore in this | |
349 | * context | |
350 | */ | |
351 | batadv_orig_node_vlan_free_ref(vlan); | |
352 | ||
610bfc6b MH |
353 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
354 | INIT_HLIST_HEAD(&orig_node->fragments[i].head); | |
355 | spin_lock_init(&orig_node->fragments[i].lock); | |
356 | orig_node->fragments[i].size = 0; | |
357 | } | |
358 | ||
c6c8fea2 | 359 | return orig_node; |
c6c8fea2 SE |
360 | free_orig_node: |
361 | kfree(orig_node); | |
362 | return NULL; | |
363 | } | |
364 | ||
56303d34 SE |
365 | static bool |
366 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
367 | struct batadv_orig_node *orig_node, | |
81e26b1a | 368 | struct batadv_neigh_node **best_neigh) |
c6c8fea2 | 369 | { |
81e26b1a | 370 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
b67bfe0d | 371 | struct hlist_node *node_tmp; |
56303d34 | 372 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 373 | bool neigh_purged = false; |
0b0094e0 | 374 | unsigned long last_seen; |
56303d34 | 375 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 376 | |
81e26b1a | 377 | *best_neigh = NULL; |
c6c8fea2 | 378 | |
f987ed6e ML |
379 | spin_lock_bh(&orig_node->neigh_list_lock); |
380 | ||
c6c8fea2 | 381 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 382 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 383 | &orig_node->neigh_list, list) { |
1eda58bf SE |
384 | last_seen = neigh_node->last_seen; |
385 | if_incoming = neigh_node->if_incoming; | |
386 | ||
42d0b044 | 387 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
388 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
389 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
390 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
391 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
392 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
393 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 394 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
395 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
396 | orig_node->orig, neigh_node->addr, | |
397 | if_incoming->net_dev->name); | |
c6c8fea2 | 398 | else |
39c75a51 | 399 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
400 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
401 | orig_node->orig, neigh_node->addr, | |
402 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
403 | |
404 | neigh_purged = true; | |
9591a79f | 405 | |
f987ed6e | 406 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 407 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 408 | } else { |
81e26b1a AQ |
409 | /* store the best_neighbour if this is the first |
410 | * iteration or if a better neighbor has been found | |
411 | */ | |
412 | if (!*best_neigh || | |
413 | bao->bat_neigh_cmp(neigh_node, *best_neigh) > 0) | |
414 | *best_neigh = neigh_node; | |
c6c8fea2 SE |
415 | } |
416 | } | |
f987ed6e ML |
417 | |
418 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
419 | return neigh_purged; |
420 | } | |
421 | ||
56303d34 SE |
422 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
423 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 424 | { |
56303d34 | 425 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 426 | |
42d0b044 SE |
427 | if (batadv_has_timed_out(orig_node->last_seen, |
428 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 429 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
430 | "Originator timeout: originator %pM, last_seen %u\n", |
431 | orig_node->orig, | |
432 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
433 | return true; |
434 | } else { | |
03fc7f86 SE |
435 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
436 | &best_neigh_node)) | |
30d3c511 SE |
437 | batadv_update_route(bat_priv, orig_node, |
438 | best_neigh_node); | |
c6c8fea2 SE |
439 | } |
440 | ||
441 | return false; | |
442 | } | |
443 | ||
56303d34 | 444 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 445 | { |
5bf74e9c | 446 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 447 | struct hlist_node *node_tmp; |
c6c8fea2 | 448 | struct hlist_head *head; |
fb778ea1 | 449 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 450 | struct batadv_orig_node *orig_node; |
c90681b8 | 451 | uint32_t i; |
c6c8fea2 SE |
452 | |
453 | if (!hash) | |
454 | return; | |
455 | ||
c6c8fea2 SE |
456 | /* for all origins... */ |
457 | for (i = 0; i < hash->size; i++) { | |
458 | head = &hash->table[i]; | |
fb778ea1 | 459 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 460 | |
fb778ea1 | 461 | spin_lock_bh(list_lock); |
b67bfe0d | 462 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 463 | head, hash_entry) { |
03fc7f86 | 464 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 465 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 466 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 467 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 468 | continue; |
c6c8fea2 | 469 | } |
610bfc6b MH |
470 | |
471 | batadv_frag_purge_orig(orig_node, | |
472 | batadv_frag_check_entry); | |
c6c8fea2 | 473 | } |
fb778ea1 | 474 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
475 | } |
476 | ||
7cf06bc6 SE |
477 | batadv_gw_node_purge(bat_priv); |
478 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
479 | } |
480 | ||
03fc7f86 | 481 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 482 | { |
56303d34 SE |
483 | struct delayed_work *delayed_work; |
484 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 485 | |
56303d34 SE |
486 | delayed_work = container_of(work, struct delayed_work, work); |
487 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 488 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
489 | queue_delayed_work(batadv_event_workqueue, |
490 | &bat_priv->orig_work, | |
491 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
492 | } |
493 | ||
56303d34 | 494 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 495 | { |
03fc7f86 | 496 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
497 | } |
498 | ||
7d211efc | 499 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
500 | { |
501 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 502 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 503 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 504 | |
30da63a6 ML |
505 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
506 | if (!primary_if) | |
737a2a22 | 507 | return 0; |
c6c8fea2 | 508 | |
737a2a22 | 509 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 510 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 AQ |
511 | primary_if->net_dev->dev_addr, net_dev->name, |
512 | bat_priv->bat_algo_ops->name); | |
c6c8fea2 | 513 | |
737a2a22 | 514 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 | 515 | |
737a2a22 AQ |
516 | if (!bat_priv->bat_algo_ops->bat_orig_print) { |
517 | seq_puts(seq, | |
518 | "No printing function for this routing protocol\n"); | |
519 | return 0; | |
c6c8fea2 SE |
520 | } |
521 | ||
737a2a22 | 522 | bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq); |
c6c8fea2 | 523 | |
30da63a6 | 524 | return 0; |
c6c8fea2 SE |
525 | } |
526 | ||
56303d34 SE |
527 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
528 | int max_if_num) | |
c6c8fea2 | 529 | { |
56303d34 | 530 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
d0015fdd | 531 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
5bf74e9c | 532 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 533 | struct hlist_head *head; |
56303d34 | 534 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
535 | uint32_t i; |
536 | int ret; | |
c6c8fea2 SE |
537 | |
538 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
539 | * if_num |
540 | */ | |
c6c8fea2 SE |
541 | for (i = 0; i < hash->size; i++) { |
542 | head = &hash->table[i]; | |
543 | ||
fb778ea1 | 544 | rcu_read_lock(); |
b67bfe0d | 545 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
546 | ret = 0; |
547 | if (bao->bat_orig_add_if) | |
548 | ret = bao->bat_orig_add_if(orig_node, | |
549 | max_if_num); | |
5346c35e | 550 | if (ret == -ENOMEM) |
c6c8fea2 SE |
551 | goto err; |
552 | } | |
fb778ea1 | 553 | rcu_read_unlock(); |
c6c8fea2 SE |
554 | } |
555 | ||
c6c8fea2 SE |
556 | return 0; |
557 | ||
558 | err: | |
fb778ea1 | 559 | rcu_read_unlock(); |
c6c8fea2 SE |
560 | return -ENOMEM; |
561 | } | |
562 | ||
56303d34 SE |
563 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
564 | int max_if_num) | |
c6c8fea2 | 565 | { |
56303d34 | 566 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 567 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 568 | struct hlist_head *head; |
56303d34 SE |
569 | struct batadv_hard_iface *hard_iface_tmp; |
570 | struct batadv_orig_node *orig_node; | |
d0015fdd | 571 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
c90681b8 AQ |
572 | uint32_t i; |
573 | int ret; | |
c6c8fea2 SE |
574 | |
575 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
576 | * if_num |
577 | */ | |
c6c8fea2 SE |
578 | for (i = 0; i < hash->size; i++) { |
579 | head = &hash->table[i]; | |
580 | ||
fb778ea1 | 581 | rcu_read_lock(); |
b67bfe0d | 582 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
583 | ret = 0; |
584 | if (bao->bat_orig_del_if) | |
585 | ret = bao->bat_orig_del_if(orig_node, | |
586 | max_if_num, | |
587 | hard_iface->if_num); | |
5346c35e | 588 | if (ret == -ENOMEM) |
c6c8fea2 SE |
589 | goto err; |
590 | } | |
fb778ea1 | 591 | rcu_read_unlock(); |
c6c8fea2 SE |
592 | } |
593 | ||
594 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
595 | rcu_read_lock(); | |
3193e8fd | 596 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 597 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
598 | continue; |
599 | ||
e6c10f43 | 600 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
601 | continue; |
602 | ||
e6c10f43 | 603 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
604 | continue; |
605 | ||
e6c10f43 ML |
606 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
607 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
608 | } |
609 | rcu_read_unlock(); | |
610 | ||
e6c10f43 | 611 | hard_iface->if_num = -1; |
c6c8fea2 SE |
612 | return 0; |
613 | ||
614 | err: | |
fb778ea1 | 615 | rcu_read_unlock(); |
c6c8fea2 SE |
616 | return -ENOMEM; |
617 | } |