Commit | Line | Data |
---|---|---|
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 | ||
199 | INIT_LIST_HEAD(&neigh_node->bonding_list); | |
1605d0d6 ML |
200 | |
201 | /* extra reference for return */ | |
202 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 203 | |
7ae8b285 | 204 | out: |
c6c8fea2 SE |
205 | return neigh_node; |
206 | } | |
207 | ||
03fc7f86 | 208 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 209 | { |
b67bfe0d | 210 | struct hlist_node *node_tmp; |
56303d34 SE |
211 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
212 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 213 | |
56303d34 | 214 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 215 | |
f987ed6e ML |
216 | spin_lock_bh(&orig_node->neigh_list_lock); |
217 | ||
a4c135c5 SW |
218 | /* for all bonding members ... */ |
219 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
220 | &orig_node->bond_list, bonding_list) { | |
221 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 222 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
223 | } |
224 | ||
c6c8fea2 | 225 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 226 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 227 | &orig_node->neigh_list, list) { |
f987ed6e | 228 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 229 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
230 | } |
231 | ||
f987ed6e ML |
232 | spin_unlock_bh(&orig_node->neigh_list_lock); |
233 | ||
d56b1705 MH |
234 | /* Free nc_nodes */ |
235 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
236 | ||
610bfc6b MH |
237 | batadv_frag_purge_orig(orig_node, NULL); |
238 | ||
95fb130d | 239 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, -1, |
08c36d3e | 240 | "originator timed out"); |
c6c8fea2 | 241 | |
d0015fdd AQ |
242 | if (orig_node->bat_priv->bat_algo_ops->bat_orig_free) |
243 | orig_node->bat_priv->bat_algo_ops->bat_orig_free(orig_node); | |
244 | ||
a73105b8 | 245 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
246 | kfree(orig_node); |
247 | } | |
248 | ||
72822225 LL |
249 | /** |
250 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
251 | * schedule an rcu callback for freeing it | |
252 | * @orig_node: the orig node to free | |
253 | */ | |
56303d34 | 254 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
255 | { |
256 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 257 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
258 | } |
259 | ||
72822225 LL |
260 | /** |
261 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
262 | * possibly free it (without rcu callback) | |
263 | * @orig_node: the orig node to free | |
264 | */ | |
265 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
266 | { | |
267 | if (atomic_dec_and_test(&orig_node->refcount)) | |
268 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
269 | } | |
270 | ||
56303d34 | 271 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 272 | { |
5bf74e9c | 273 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 274 | struct hlist_node *node_tmp; |
16b1aba8 | 275 | struct hlist_head *head; |
16b1aba8 | 276 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 277 | struct batadv_orig_node *orig_node; |
c90681b8 | 278 | uint32_t i; |
16b1aba8 ML |
279 | |
280 | if (!hash) | |
c6c8fea2 SE |
281 | return; |
282 | ||
283 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
284 | ||
c6c8fea2 | 285 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
286 | |
287 | for (i = 0; i < hash->size; i++) { | |
288 | head = &hash->table[i]; | |
289 | list_lock = &hash->list_locks[i]; | |
290 | ||
291 | spin_lock_bh(list_lock); | |
b67bfe0d | 292 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 293 | head, hash_entry) { |
b67bfe0d | 294 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 295 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
296 | } |
297 | spin_unlock_bh(list_lock); | |
298 | } | |
299 | ||
1a8eaf07 | 300 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
301 | } |
302 | ||
bbad0a5e AQ |
303 | /** |
304 | * batadv_orig_node_new - creates a new orig_node | |
305 | * @bat_priv: the bat priv with all the soft interface information | |
306 | * @addr: the mac address of the originator | |
307 | * | |
308 | * Creates a new originator object and initialise all the generic fields. | |
309 | * The new object is not added to the originator list. | |
310 | * Returns the newly created object or NULL on failure. | |
9cfc7bd6 | 311 | */ |
bbad0a5e | 312 | struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, |
56303d34 | 313 | const uint8_t *addr) |
c6c8fea2 | 314 | { |
56303d34 | 315 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 316 | struct batadv_orig_node_vlan *vlan; |
42d0b044 | 317 | unsigned long reset_time; |
bbad0a5e | 318 | int i; |
c6c8fea2 | 319 | |
39c75a51 SE |
320 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
321 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 322 | |
704509b8 | 323 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
324 | if (!orig_node) |
325 | return NULL; | |
326 | ||
9591a79f | 327 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 328 | INIT_LIST_HEAD(&orig_node->bond_list); |
7ea7b4a1 | 329 | INIT_LIST_HEAD(&orig_node->vlan_list); |
f3e0008f | 330 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 331 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 332 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 333 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 334 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 335 | |
d56b1705 MH |
336 | batadv_nc_init_orig(orig_node); |
337 | ||
7b36e8ee ML |
338 | /* extra reference for return */ |
339 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 340 | |
17071578 | 341 | orig_node->tt_initialised = false; |
16b1aba8 | 342 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 343 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 344 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 345 | orig_node->router = NULL; |
c8c991bf | 346 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 347 | orig_node->tt_buff = NULL; |
a73105b8 | 348 | orig_node->tt_buff_len = 0; |
42d0b044 SE |
349 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
350 | orig_node->bcast_seqno_reset = reset_time; | |
351 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 352 | |
a4c135c5 SW |
353 | atomic_set(&orig_node->bond_candidates, 0); |
354 | ||
7ea7b4a1 AQ |
355 | /* create a vlan object for the "untagged" LAN */ |
356 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
357 | if (!vlan) | |
358 | goto free_orig_node; | |
359 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
360 | * Immediately release vlan since it is not needed anymore in this | |
361 | * context | |
362 | */ | |
363 | batadv_orig_node_vlan_free_ref(vlan); | |
364 | ||
610bfc6b MH |
365 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
366 | INIT_HLIST_HEAD(&orig_node->fragments[i].head); | |
367 | spin_lock_init(&orig_node->fragments[i].lock); | |
368 | orig_node->fragments[i].size = 0; | |
369 | } | |
370 | ||
c6c8fea2 | 371 | return orig_node; |
c6c8fea2 SE |
372 | free_orig_node: |
373 | kfree(orig_node); | |
374 | return NULL; | |
375 | } | |
376 | ||
56303d34 SE |
377 | static bool |
378 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
379 | struct batadv_orig_node *orig_node, | |
81e26b1a | 380 | struct batadv_neigh_node **best_neigh) |
c6c8fea2 | 381 | { |
81e26b1a | 382 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
b67bfe0d | 383 | struct hlist_node *node_tmp; |
56303d34 | 384 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 385 | bool neigh_purged = false; |
0b0094e0 | 386 | unsigned long last_seen; |
56303d34 | 387 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 | 388 | |
81e26b1a | 389 | *best_neigh = NULL; |
c6c8fea2 | 390 | |
f987ed6e ML |
391 | spin_lock_bh(&orig_node->neigh_list_lock); |
392 | ||
c6c8fea2 | 393 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 394 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 395 | &orig_node->neigh_list, list) { |
1eda58bf SE |
396 | last_seen = neigh_node->last_seen; |
397 | if_incoming = neigh_node->if_incoming; | |
398 | ||
42d0b044 | 399 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
400 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
401 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
402 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
403 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
404 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
405 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 406 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
407 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
408 | orig_node->orig, neigh_node->addr, | |
409 | if_incoming->net_dev->name); | |
c6c8fea2 | 410 | else |
39c75a51 | 411 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
412 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
413 | orig_node->orig, neigh_node->addr, | |
414 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
415 | |
416 | neigh_purged = true; | |
9591a79f | 417 | |
f987ed6e | 418 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 419 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 420 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 421 | } else { |
81e26b1a AQ |
422 | /* store the best_neighbour if this is the first |
423 | * iteration or if a better neighbor has been found | |
424 | */ | |
425 | if (!*best_neigh || | |
426 | bao->bat_neigh_cmp(neigh_node, *best_neigh) > 0) | |
427 | *best_neigh = neigh_node; | |
c6c8fea2 SE |
428 | } |
429 | } | |
f987ed6e ML |
430 | |
431 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
432 | return neigh_purged; |
433 | } | |
434 | ||
56303d34 SE |
435 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
436 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 437 | { |
56303d34 | 438 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 439 | |
42d0b044 SE |
440 | if (batadv_has_timed_out(orig_node->last_seen, |
441 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 442 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
443 | "Originator timeout: originator %pM, last_seen %u\n", |
444 | orig_node->orig, | |
445 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
446 | return true; |
447 | } else { | |
03fc7f86 SE |
448 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
449 | &best_neigh_node)) | |
30d3c511 SE |
450 | batadv_update_route(bat_priv, orig_node, |
451 | best_neigh_node); | |
c6c8fea2 SE |
452 | } |
453 | ||
454 | return false; | |
455 | } | |
456 | ||
56303d34 | 457 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 458 | { |
5bf74e9c | 459 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 460 | struct hlist_node *node_tmp; |
c6c8fea2 | 461 | struct hlist_head *head; |
fb778ea1 | 462 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 463 | struct batadv_orig_node *orig_node; |
c90681b8 | 464 | uint32_t i; |
c6c8fea2 SE |
465 | |
466 | if (!hash) | |
467 | return; | |
468 | ||
c6c8fea2 SE |
469 | /* for all origins... */ |
470 | for (i = 0; i < hash->size; i++) { | |
471 | head = &hash->table[i]; | |
fb778ea1 | 472 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 473 | |
fb778ea1 | 474 | spin_lock_bh(list_lock); |
b67bfe0d | 475 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 476 | head, hash_entry) { |
03fc7f86 | 477 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 478 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 479 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 480 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 481 | continue; |
c6c8fea2 | 482 | } |
610bfc6b MH |
483 | |
484 | batadv_frag_purge_orig(orig_node, | |
485 | batadv_frag_check_entry); | |
c6c8fea2 | 486 | } |
fb778ea1 | 487 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
488 | } |
489 | ||
7cf06bc6 SE |
490 | batadv_gw_node_purge(bat_priv); |
491 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
492 | } |
493 | ||
03fc7f86 | 494 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 495 | { |
56303d34 SE |
496 | struct delayed_work *delayed_work; |
497 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 498 | |
56303d34 SE |
499 | delayed_work = container_of(work, struct delayed_work, work); |
500 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 501 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
502 | queue_delayed_work(batadv_event_workqueue, |
503 | &bat_priv->orig_work, | |
504 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
505 | } |
506 | ||
56303d34 | 507 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 508 | { |
03fc7f86 | 509 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
510 | } |
511 | ||
7d211efc | 512 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
513 | { |
514 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 515 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
56303d34 | 516 | struct batadv_hard_iface *primary_if; |
32ae9b22 | 517 | |
30da63a6 ML |
518 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
519 | if (!primary_if) | |
737a2a22 | 520 | return 0; |
c6c8fea2 | 521 | |
737a2a22 | 522 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s %s)]\n", |
42d0b044 | 523 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
737a2a22 AQ |
524 | primary_if->net_dev->dev_addr, net_dev->name, |
525 | bat_priv->bat_algo_ops->name); | |
c6c8fea2 | 526 | |
737a2a22 | 527 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 | 528 | |
737a2a22 AQ |
529 | if (!bat_priv->bat_algo_ops->bat_orig_print) { |
530 | seq_puts(seq, | |
531 | "No printing function for this routing protocol\n"); | |
532 | return 0; | |
c6c8fea2 SE |
533 | } |
534 | ||
737a2a22 | 535 | bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq); |
c6c8fea2 | 536 | |
30da63a6 | 537 | return 0; |
c6c8fea2 SE |
538 | } |
539 | ||
56303d34 SE |
540 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
541 | int max_if_num) | |
c6c8fea2 | 542 | { |
56303d34 | 543 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
d0015fdd | 544 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
5bf74e9c | 545 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 546 | struct hlist_head *head; |
56303d34 | 547 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
548 | uint32_t i; |
549 | int ret; | |
c6c8fea2 SE |
550 | |
551 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
552 | * if_num |
553 | */ | |
c6c8fea2 SE |
554 | for (i = 0; i < hash->size; i++) { |
555 | head = &hash->table[i]; | |
556 | ||
fb778ea1 | 557 | rcu_read_lock(); |
b67bfe0d | 558 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
559 | ret = 0; |
560 | if (bao->bat_orig_add_if) | |
561 | ret = bao->bat_orig_add_if(orig_node, | |
562 | max_if_num); | |
5346c35e | 563 | if (ret == -ENOMEM) |
c6c8fea2 SE |
564 | goto err; |
565 | } | |
fb778ea1 | 566 | rcu_read_unlock(); |
c6c8fea2 SE |
567 | } |
568 | ||
c6c8fea2 SE |
569 | return 0; |
570 | ||
571 | err: | |
fb778ea1 | 572 | rcu_read_unlock(); |
c6c8fea2 SE |
573 | return -ENOMEM; |
574 | } | |
575 | ||
56303d34 SE |
576 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
577 | int max_if_num) | |
c6c8fea2 | 578 | { |
56303d34 | 579 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 580 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 581 | struct hlist_head *head; |
56303d34 SE |
582 | struct batadv_hard_iface *hard_iface_tmp; |
583 | struct batadv_orig_node *orig_node; | |
d0015fdd | 584 | struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; |
c90681b8 AQ |
585 | uint32_t i; |
586 | int ret; | |
c6c8fea2 SE |
587 | |
588 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
589 | * if_num |
590 | */ | |
c6c8fea2 SE |
591 | for (i = 0; i < hash->size; i++) { |
592 | head = &hash->table[i]; | |
593 | ||
fb778ea1 | 594 | rcu_read_lock(); |
b67bfe0d | 595 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
d0015fdd AQ |
596 | ret = 0; |
597 | if (bao->bat_orig_del_if) | |
598 | ret = bao->bat_orig_del_if(orig_node, | |
599 | max_if_num, | |
600 | hard_iface->if_num); | |
5346c35e | 601 | if (ret == -ENOMEM) |
c6c8fea2 SE |
602 | goto err; |
603 | } | |
fb778ea1 | 604 | rcu_read_unlock(); |
c6c8fea2 SE |
605 | } |
606 | ||
607 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
608 | rcu_read_lock(); | |
3193e8fd | 609 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 610 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
611 | continue; |
612 | ||
e6c10f43 | 613 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
614 | continue; |
615 | ||
e6c10f43 | 616 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
617 | continue; |
618 | ||
e6c10f43 ML |
619 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
620 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
621 | } |
622 | rcu_read_unlock(); | |
623 | ||
e6c10f43 | 624 | hard_iface->if_num = -1; |
c6c8fea2 SE |
625 | return 0; |
626 | ||
627 | err: | |
fb778ea1 | 628 | rcu_read_unlock(); |
c6c8fea2 SE |
629 | return -ENOMEM; |
630 | } |