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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 | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
17 | * 02110-1301, USA | |
c6c8fea2 SE |
18 | */ |
19 | ||
c6c8fea2 | 20 | #include "main.h" |
785ea114 | 21 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
22 | #include "originator.h" |
23 | #include "hash.h" | |
24 | #include "translation-table.h" | |
25 | #include "routing.h" | |
26 | #include "gateway_client.h" | |
27 | #include "hard-interface.h" | |
c6c8fea2 | 28 | #include "soft-interface.h" |
23721387 | 29 | #include "bridge_loop_avoidance.h" |
d56b1705 | 30 | #include "network-coding.h" |
610bfc6b | 31 | #include "fragmentation.h" |
c6c8fea2 | 32 | |
dec05074 AQ |
33 | /* hash class keys */ |
34 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
35 | ||
03fc7f86 | 36 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 37 | |
b8e2dd13 | 38 | /* returns 1 if they are the same originator */ |
03fc7f86 | 39 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 40 | { |
56303d34 SE |
41 | const void *data1 = container_of(node, struct batadv_orig_node, |
42 | hash_entry); | |
b8e2dd13 SE |
43 | |
44 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
45 | } | |
46 | ||
7ea7b4a1 AQ |
47 | /** |
48 | * batadv_orig_node_vlan_get - get an orig_node_vlan object | |
49 | * @orig_node: the originator serving the VLAN | |
50 | * @vid: the VLAN identifier | |
51 | * | |
52 | * Returns the vlan object identified by vid and belonging to orig_node or NULL | |
53 | * if it does not exist. | |
54 | */ | |
55 | struct batadv_orig_node_vlan * | |
56 | batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, | |
57 | unsigned short vid) | |
58 | { | |
59 | struct batadv_orig_node_vlan *vlan = NULL, *tmp; | |
60 | ||
61 | rcu_read_lock(); | |
62 | list_for_each_entry_rcu(tmp, &orig_node->vlan_list, list) { | |
63 | if (tmp->vid != vid) | |
64 | continue; | |
65 | ||
66 | if (!atomic_inc_not_zero(&tmp->refcount)) | |
67 | continue; | |
68 | ||
69 | vlan = tmp; | |
70 | ||
71 | break; | |
72 | } | |
73 | rcu_read_unlock(); | |
74 | ||
75 | return vlan; | |
76 | } | |
77 | ||
78 | /** | |
79 | * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan | |
80 | * object | |
81 | * @orig_node: the originator serving the VLAN | |
82 | * @vid: the VLAN identifier | |
83 | * | |
84 | * Returns NULL in case of failure or the vlan object identified by vid and | |
85 | * belonging to orig_node otherwise. The object is created and added to the list | |
86 | * if it does not exist. | |
87 | * | |
88 | * The object is returned with refcounter increased by 1. | |
89 | */ | |
90 | struct batadv_orig_node_vlan * | |
91 | batadv_orig_node_vlan_new(struct batadv_orig_node *orig_node, | |
92 | unsigned short vid) | |
93 | { | |
94 | struct batadv_orig_node_vlan *vlan; | |
95 | ||
96 | spin_lock_bh(&orig_node->vlan_list_lock); | |
97 | ||
98 | /* first look if an object for this vid already exists */ | |
99 | vlan = batadv_orig_node_vlan_get(orig_node, vid); | |
100 | if (vlan) | |
101 | goto out; | |
102 | ||
103 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
104 | if (!vlan) | |
105 | goto out; | |
106 | ||
107 | atomic_set(&vlan->refcount, 2); | |
108 | vlan->vid = vid; | |
109 | ||
110 | list_add_rcu(&vlan->list, &orig_node->vlan_list); | |
111 | ||
112 | out: | |
113 | spin_unlock_bh(&orig_node->vlan_list_lock); | |
114 | ||
115 | return vlan; | |
116 | } | |
117 | ||
118 | /** | |
119 | * batadv_orig_node_vlan_free_ref - decrement the refcounter and possibly free | |
120 | * the originator-vlan object | |
121 | * @orig_vlan: the originator-vlan object to release | |
122 | */ | |
123 | void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan *orig_vlan) | |
124 | { | |
125 | if (atomic_dec_and_test(&orig_vlan->refcount)) | |
126 | kfree_rcu(orig_vlan, rcu); | |
127 | } | |
128 | ||
56303d34 | 129 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
130 | { |
131 | if (bat_priv->orig_hash) | |
5346c35e | 132 | return 0; |
c6c8fea2 | 133 | |
1a8eaf07 | 134 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
135 | |
136 | if (!bat_priv->orig_hash) | |
137 | goto err; | |
138 | ||
dec05074 AQ |
139 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
140 | &batadv_orig_hash_lock_class_key); | |
141 | ||
72414442 AQ |
142 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
143 | queue_delayed_work(batadv_event_workqueue, | |
144 | &bat_priv->orig_work, | |
145 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
146 | ||
5346c35e | 147 | return 0; |
c6c8fea2 SE |
148 | |
149 | err: | |
5346c35e | 150 | return -ENOMEM; |
c6c8fea2 SE |
151 | } |
152 | ||
56303d34 | 153 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 154 | { |
44524fcd | 155 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 156 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
157 | } |
158 | ||
e1a5382f | 159 | /* increases the refcounter of a found router */ |
56303d34 SE |
160 | struct batadv_neigh_node * |
161 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 162 | { |
56303d34 | 163 | struct batadv_neigh_node *router; |
e1a5382f LL |
164 | |
165 | rcu_read_lock(); | |
166 | router = rcu_dereference(orig_node->router); | |
167 | ||
168 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
169 | router = NULL; | |
170 | ||
171 | rcu_read_unlock(); | |
172 | return router; | |
173 | } | |
174 | ||
56303d34 SE |
175 | struct batadv_neigh_node * |
176 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
863dd7a8 | 177 | const uint8_t *neigh_addr) |
c6c8fea2 | 178 | { |
56303d34 SE |
179 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
180 | struct batadv_neigh_node *neigh_node; | |
c6c8fea2 | 181 | |
704509b8 | 182 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 183 | if (!neigh_node) |
7ae8b285 | 184 | goto out; |
c6c8fea2 | 185 | |
9591a79f | 186 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 187 | |
7ae8b285 | 188 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 189 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
190 | |
191 | /* extra reference for return */ | |
192 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 193 | |
39c75a51 | 194 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
d1dc3073 AQ |
195 | "Creating new neighbor %pM on interface %s\n", neigh_addr, |
196 | hard_iface->net_dev->name); | |
7ae8b285 ML |
197 | |
198 | out: | |
c6c8fea2 SE |
199 | return neigh_node; |
200 | } | |
201 | ||
03fc7f86 | 202 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 203 | { |
b67bfe0d | 204 | struct hlist_node *node_tmp; |
56303d34 SE |
205 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
206 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 207 | |
56303d34 | 208 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 209 | |
f987ed6e ML |
210 | spin_lock_bh(&orig_node->neigh_list_lock); |
211 | ||
a4c135c5 SW |
212 | /* for all bonding members ... */ |
213 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
214 | &orig_node->bond_list, bonding_list) { | |
215 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 216 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
217 | } |
218 | ||
c6c8fea2 | 219 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 220 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 221 | &orig_node->neigh_list, list) { |
f987ed6e | 222 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 223 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
224 | } |
225 | ||
f987ed6e ML |
226 | spin_unlock_bh(&orig_node->neigh_list_lock); |
227 | ||
d56b1705 MH |
228 | /* Free nc_nodes */ |
229 | batadv_nc_purge_orig(orig_node->bat_priv, orig_node, NULL); | |
230 | ||
610bfc6b MH |
231 | batadv_frag_purge_orig(orig_node, NULL); |
232 | ||
95fb130d | 233 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, -1, |
08c36d3e | 234 | "originator timed out"); |
c6c8fea2 | 235 | |
a73105b8 | 236 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
237 | kfree(orig_node->bcast_own); |
238 | kfree(orig_node->bcast_own_sum); | |
239 | kfree(orig_node); | |
240 | } | |
241 | ||
72822225 LL |
242 | /** |
243 | * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly | |
244 | * schedule an rcu callback for freeing it | |
245 | * @orig_node: the orig node to free | |
246 | */ | |
56303d34 | 247 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
248 | { |
249 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 250 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
251 | } |
252 | ||
72822225 LL |
253 | /** |
254 | * batadv_orig_node_free_ref_now - decrement the orig node refcounter and | |
255 | * possibly free it (without rcu callback) | |
256 | * @orig_node: the orig node to free | |
257 | */ | |
258 | void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node) | |
259 | { | |
260 | if (atomic_dec_and_test(&orig_node->refcount)) | |
261 | batadv_orig_node_free_rcu(&orig_node->rcu); | |
262 | } | |
263 | ||
56303d34 | 264 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 265 | { |
5bf74e9c | 266 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 267 | struct hlist_node *node_tmp; |
16b1aba8 | 268 | struct hlist_head *head; |
16b1aba8 | 269 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 270 | struct batadv_orig_node *orig_node; |
c90681b8 | 271 | uint32_t i; |
16b1aba8 ML |
272 | |
273 | if (!hash) | |
c6c8fea2 SE |
274 | return; |
275 | ||
276 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
277 | ||
c6c8fea2 | 278 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
279 | |
280 | for (i = 0; i < hash->size; i++) { | |
281 | head = &hash->table[i]; | |
282 | list_lock = &hash->list_locks[i]; | |
283 | ||
284 | spin_lock_bh(list_lock); | |
b67bfe0d | 285 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 286 | head, hash_entry) { |
b67bfe0d | 287 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 288 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
289 | } |
290 | spin_unlock_bh(list_lock); | |
291 | } | |
292 | ||
1a8eaf07 | 293 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
294 | } |
295 | ||
296 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
297 | * address if it does not exits |
298 | */ | |
56303d34 SE |
299 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
300 | const uint8_t *addr) | |
c6c8fea2 | 301 | { |
56303d34 | 302 | struct batadv_orig_node *orig_node; |
7ea7b4a1 | 303 | struct batadv_orig_node_vlan *vlan; |
610bfc6b | 304 | int size, i; |
c6c8fea2 | 305 | int hash_added; |
42d0b044 | 306 | unsigned long reset_time; |
c6c8fea2 | 307 | |
da641193 | 308 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 309 | if (orig_node) |
c6c8fea2 SE |
310 | return orig_node; |
311 | ||
39c75a51 SE |
312 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
313 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 314 | |
704509b8 | 315 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
316 | if (!orig_node) |
317 | return NULL; | |
318 | ||
9591a79f | 319 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 320 | INIT_LIST_HEAD(&orig_node->bond_list); |
7ea7b4a1 | 321 | INIT_LIST_HEAD(&orig_node->vlan_list); |
2ae2daf6 | 322 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 323 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 324 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 325 | spin_lock_init(&orig_node->tt_buff_lock); |
a70a9aa9 | 326 | spin_lock_init(&orig_node->tt_lock); |
7ea7b4a1 | 327 | spin_lock_init(&orig_node->vlan_list_lock); |
7b36e8ee | 328 | |
d56b1705 MH |
329 | batadv_nc_init_orig(orig_node); |
330 | ||
7b36e8ee ML |
331 | /* extra reference for return */ |
332 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 333 | |
17071578 | 334 | orig_node->tt_initialised = false; |
16b1aba8 | 335 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 336 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 337 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 338 | orig_node->router = NULL; |
c8c991bf | 339 | atomic_set(&orig_node->last_ttvn, 0); |
2dafb49d | 340 | orig_node->tt_buff = NULL; |
a73105b8 | 341 | orig_node->tt_buff_len = 0; |
42d0b044 SE |
342 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
343 | orig_node->bcast_seqno_reset = reset_time; | |
344 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 345 | |
a4c135c5 SW |
346 | atomic_set(&orig_node->bond_candidates, 0); |
347 | ||
7ea7b4a1 AQ |
348 | /* create a vlan object for the "untagged" LAN */ |
349 | vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); | |
350 | if (!vlan) | |
351 | goto free_orig_node; | |
352 | /* batadv_orig_node_vlan_new() increases the refcounter. | |
353 | * Immediately release vlan since it is not needed anymore in this | |
354 | * context | |
355 | */ | |
356 | batadv_orig_node_vlan_free_ref(vlan); | |
357 | ||
42d0b044 | 358 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
359 | |
360 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
361 | if (!orig_node->bcast_own) | |
7ea7b4a1 | 362 | goto free_vlan; |
c6c8fea2 SE |
363 | |
364 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
365 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
366 | ||
610bfc6b MH |
367 | for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) { |
368 | INIT_HLIST_HEAD(&orig_node->fragments[i].head); | |
369 | spin_lock_init(&orig_node->fragments[i].lock); | |
370 | orig_node->fragments[i].size = 0; | |
371 | } | |
372 | ||
c6c8fea2 SE |
373 | if (!orig_node->bcast_own_sum) |
374 | goto free_bcast_own; | |
375 | ||
03fc7f86 | 376 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 377 | batadv_choose_orig, orig_node, |
c0a55929 | 378 | &orig_node->hash_entry); |
1a1f37d9 | 379 | if (hash_added != 0) |
c6c8fea2 SE |
380 | goto free_bcast_own_sum; |
381 | ||
382 | return orig_node; | |
383 | free_bcast_own_sum: | |
384 | kfree(orig_node->bcast_own_sum); | |
385 | free_bcast_own: | |
386 | kfree(orig_node->bcast_own); | |
7ea7b4a1 AQ |
387 | free_vlan: |
388 | batadv_orig_node_vlan_free_ref(vlan); | |
c6c8fea2 SE |
389 | free_orig_node: |
390 | kfree(orig_node); | |
391 | return NULL; | |
392 | } | |
393 | ||
56303d34 SE |
394 | static bool |
395 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
396 | struct batadv_orig_node *orig_node, | |
397 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 398 | { |
b67bfe0d | 399 | struct hlist_node *node_tmp; |
56303d34 | 400 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 401 | bool neigh_purged = false; |
0b0094e0 | 402 | unsigned long last_seen; |
56303d34 | 403 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
404 | |
405 | *best_neigh_node = NULL; | |
406 | ||
f987ed6e ML |
407 | spin_lock_bh(&orig_node->neigh_list_lock); |
408 | ||
c6c8fea2 | 409 | /* for all neighbors towards this originator ... */ |
b67bfe0d | 410 | hlist_for_each_entry_safe(neigh_node, node_tmp, |
9591a79f | 411 | &orig_node->neigh_list, list) { |
1eda58bf SE |
412 | last_seen = neigh_node->last_seen; |
413 | if_incoming = neigh_node->if_incoming; | |
414 | ||
42d0b044 | 415 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
416 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
417 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
418 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
419 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
420 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
421 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 422 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
423 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
424 | orig_node->orig, neigh_node->addr, | |
425 | if_incoming->net_dev->name); | |
c6c8fea2 | 426 | else |
39c75a51 | 427 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
428 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
429 | orig_node->orig, neigh_node->addr, | |
430 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
431 | |
432 | neigh_purged = true; | |
9591a79f | 433 | |
f987ed6e | 434 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 435 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 436 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
437 | } else { |
438 | if ((!*best_neigh_node) || | |
439 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
440 | *best_neigh_node = neigh_node; | |
441 | } | |
442 | } | |
f987ed6e ML |
443 | |
444 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
445 | return neigh_purged; |
446 | } | |
447 | ||
56303d34 SE |
448 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
449 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 450 | { |
56303d34 | 451 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 452 | |
42d0b044 SE |
453 | if (batadv_has_timed_out(orig_node->last_seen, |
454 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 455 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
456 | "Originator timeout: originator %pM, last_seen %u\n", |
457 | orig_node->orig, | |
458 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
459 | return true; |
460 | } else { | |
03fc7f86 SE |
461 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
462 | &best_neigh_node)) | |
30d3c511 SE |
463 | batadv_update_route(bat_priv, orig_node, |
464 | best_neigh_node); | |
c6c8fea2 SE |
465 | } |
466 | ||
467 | return false; | |
468 | } | |
469 | ||
56303d34 | 470 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 471 | { |
5bf74e9c | 472 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
b67bfe0d | 473 | struct hlist_node *node_tmp; |
c6c8fea2 | 474 | struct hlist_head *head; |
fb778ea1 | 475 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 476 | struct batadv_orig_node *orig_node; |
c90681b8 | 477 | uint32_t i; |
c6c8fea2 SE |
478 | |
479 | if (!hash) | |
480 | return; | |
481 | ||
c6c8fea2 SE |
482 | /* for all origins... */ |
483 | for (i = 0; i < hash->size; i++) { | |
484 | head = &hash->table[i]; | |
fb778ea1 | 485 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 486 | |
fb778ea1 | 487 | spin_lock_bh(list_lock); |
b67bfe0d | 488 | hlist_for_each_entry_safe(orig_node, node_tmp, |
7aadf889 | 489 | head, hash_entry) { |
03fc7f86 | 490 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
414254e3 | 491 | batadv_gw_node_delete(bat_priv, orig_node); |
b67bfe0d | 492 | hlist_del_rcu(&orig_node->hash_entry); |
7d211efc | 493 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 494 | continue; |
c6c8fea2 | 495 | } |
610bfc6b MH |
496 | |
497 | batadv_frag_purge_orig(orig_node, | |
498 | batadv_frag_check_entry); | |
c6c8fea2 | 499 | } |
fb778ea1 | 500 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
501 | } |
502 | ||
7cf06bc6 SE |
503 | batadv_gw_node_purge(bat_priv); |
504 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
505 | } |
506 | ||
03fc7f86 | 507 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 508 | { |
56303d34 SE |
509 | struct delayed_work *delayed_work; |
510 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 511 | |
56303d34 SE |
512 | delayed_work = container_of(work, struct delayed_work, work); |
513 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 | 514 | _batadv_purge_orig(bat_priv); |
72414442 AQ |
515 | queue_delayed_work(batadv_event_workqueue, |
516 | &bat_priv->orig_work, | |
517 | msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); | |
c6c8fea2 SE |
518 | } |
519 | ||
56303d34 | 520 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 521 | { |
03fc7f86 | 522 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
523 | } |
524 | ||
7d211efc | 525 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
526 | { |
527 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 528 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 529 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 530 | struct hlist_head *head; |
56303d34 SE |
531 | struct batadv_hard_iface *primary_if; |
532 | struct batadv_orig_node *orig_node; | |
533 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
534 | int batman_count = 0; |
535 | int last_seen_secs; | |
536 | int last_seen_msecs; | |
0aca2369 | 537 | unsigned long last_seen_jiffies; |
c90681b8 | 538 | uint32_t i; |
32ae9b22 | 539 | |
30da63a6 ML |
540 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
541 | if (!primary_if) | |
32ae9b22 | 542 | goto out; |
c6c8fea2 | 543 | |
44c4349a | 544 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 545 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 546 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 547 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
548 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
549 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 550 | |
c6c8fea2 SE |
551 | for (i = 0; i < hash->size; i++) { |
552 | head = &hash->table[i]; | |
553 | ||
fb778ea1 | 554 | rcu_read_lock(); |
b67bfe0d | 555 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
7d211efc | 556 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 557 | if (!neigh_node) |
c6c8fea2 SE |
558 | continue; |
559 | ||
e1a5382f LL |
560 | if (neigh_node->tq_avg == 0) |
561 | goto next; | |
c6c8fea2 | 562 | |
0aca2369 SE |
563 | last_seen_jiffies = jiffies - orig_node->last_seen; |
564 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
565 | last_seen_secs = last_seen_msecs / 1000; | |
566 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 567 | |
c6c8fea2 SE |
568 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
569 | orig_node->orig, last_seen_secs, | |
570 | last_seen_msecs, neigh_node->tq_avg, | |
571 | neigh_node->addr, | |
572 | neigh_node->if_incoming->net_dev->name); | |
573 | ||
b67bfe0d | 574 | hlist_for_each_entry_rcu(neigh_node_tmp, |
f987ed6e | 575 | &orig_node->neigh_list, list) { |
e1a5382f LL |
576 | seq_printf(seq, " %pM (%3i)", |
577 | neigh_node_tmp->addr, | |
578 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
579 | } |
580 | ||
0c814653 | 581 | seq_puts(seq, "\n"); |
c6c8fea2 | 582 | batman_count++; |
e1a5382f LL |
583 | |
584 | next: | |
7d211efc | 585 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 586 | } |
fb778ea1 | 587 | rcu_read_unlock(); |
c6c8fea2 SE |
588 | } |
589 | ||
e1a5382f | 590 | if (batman_count == 0) |
0c814653 | 591 | seq_puts(seq, "No batman nodes in range ...\n"); |
c6c8fea2 | 592 | |
32ae9b22 ML |
593 | out: |
594 | if (primary_if) | |
e5d89254 | 595 | batadv_hardif_free_ref(primary_if); |
30da63a6 | 596 | return 0; |
c6c8fea2 SE |
597 | } |
598 | ||
56303d34 SE |
599 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
600 | int max_if_num) | |
c6c8fea2 SE |
601 | { |
602 | void *data_ptr; | |
42d0b044 | 603 | size_t data_size, old_size; |
c6c8fea2 | 604 | |
42d0b044 SE |
605 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
606 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
607 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 608 | if (!data_ptr) |
5346c35e | 609 | return -ENOMEM; |
c6c8fea2 | 610 | |
42d0b044 | 611 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
612 | kfree(orig_node->bcast_own); |
613 | orig_node->bcast_own = data_ptr; | |
614 | ||
615 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 616 | if (!data_ptr) |
5346c35e | 617 | return -ENOMEM; |
c6c8fea2 SE |
618 | |
619 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
620 | (max_if_num - 1) * sizeof(uint8_t)); | |
621 | kfree(orig_node->bcast_own_sum); | |
622 | orig_node->bcast_own_sum = data_ptr; | |
623 | ||
624 | return 0; | |
625 | } | |
626 | ||
56303d34 SE |
627 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
628 | int max_if_num) | |
c6c8fea2 | 629 | { |
56303d34 | 630 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 631 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 632 | struct hlist_head *head; |
56303d34 | 633 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
634 | uint32_t i; |
635 | int ret; | |
c6c8fea2 SE |
636 | |
637 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
638 | * if_num |
639 | */ | |
c6c8fea2 SE |
640 | for (i = 0; i < hash->size; i++) { |
641 | head = &hash->table[i]; | |
642 | ||
fb778ea1 | 643 | rcu_read_lock(); |
b67bfe0d | 644 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 645 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 646 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
647 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
648 | ||
5346c35e | 649 | if (ret == -ENOMEM) |
c6c8fea2 SE |
650 | goto err; |
651 | } | |
fb778ea1 | 652 | rcu_read_unlock(); |
c6c8fea2 SE |
653 | } |
654 | ||
c6c8fea2 SE |
655 | return 0; |
656 | ||
657 | err: | |
fb778ea1 | 658 | rcu_read_unlock(); |
c6c8fea2 SE |
659 | return -ENOMEM; |
660 | } | |
661 | ||
56303d34 | 662 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 663 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
664 | { |
665 | void *data_ptr = NULL; | |
666 | int chunk_size; | |
667 | ||
668 | /* last interface was removed */ | |
669 | if (max_if_num == 0) | |
670 | goto free_bcast_own; | |
671 | ||
42d0b044 | 672 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 673 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 674 | if (!data_ptr) |
5346c35e | 675 | return -ENOMEM; |
c6c8fea2 SE |
676 | |
677 | /* copy first part */ | |
678 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
679 | ||
680 | /* copy second part */ | |
38e3c5f0 | 681 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
682 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
683 | (max_if_num - del_if_num) * chunk_size); | |
684 | ||
685 | free_bcast_own: | |
686 | kfree(orig_node->bcast_own); | |
687 | orig_node->bcast_own = data_ptr; | |
688 | ||
689 | if (max_if_num == 0) | |
690 | goto free_own_sum; | |
691 | ||
692 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 693 | if (!data_ptr) |
5346c35e | 694 | return -ENOMEM; |
c6c8fea2 SE |
695 | |
696 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
697 | del_if_num * sizeof(uint8_t)); | |
698 | ||
38e3c5f0 | 699 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
700 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
701 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
702 | ||
703 | free_own_sum: | |
704 | kfree(orig_node->bcast_own_sum); | |
705 | orig_node->bcast_own_sum = data_ptr; | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
56303d34 SE |
710 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
711 | int max_if_num) | |
c6c8fea2 | 712 | { |
56303d34 | 713 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 714 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
c6c8fea2 | 715 | struct hlist_head *head; |
56303d34 SE |
716 | struct batadv_hard_iface *hard_iface_tmp; |
717 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
718 | uint32_t i; |
719 | int ret; | |
c6c8fea2 SE |
720 | |
721 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
722 | * if_num |
723 | */ | |
c6c8fea2 SE |
724 | for (i = 0; i < hash->size; i++) { |
725 | head = &hash->table[i]; | |
726 | ||
fb778ea1 | 727 | rcu_read_lock(); |
b67bfe0d | 728 | hlist_for_each_entry_rcu(orig_node, head, hash_entry) { |
2ae2daf6 | 729 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
730 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
731 | hard_iface->if_num); | |
2ae2daf6 | 732 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 733 | |
5346c35e | 734 | if (ret == -ENOMEM) |
c6c8fea2 SE |
735 | goto err; |
736 | } | |
fb778ea1 | 737 | rcu_read_unlock(); |
c6c8fea2 SE |
738 | } |
739 | ||
740 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
741 | rcu_read_lock(); | |
3193e8fd | 742 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 743 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
744 | continue; |
745 | ||
e6c10f43 | 746 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
747 | continue; |
748 | ||
e6c10f43 | 749 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
750 | continue; |
751 | ||
e6c10f43 ML |
752 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
753 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
754 | } |
755 | rcu_read_unlock(); | |
756 | ||
e6c10f43 | 757 | hard_iface->if_num = -1; |
c6c8fea2 SE |
758 | return 0; |
759 | ||
760 | err: | |
fb778ea1 | 761 | rcu_read_unlock(); |
c6c8fea2 SE |
762 | return -ENOMEM; |
763 | } |