Commit | Line | Data |
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9cfc7bd6 | 1 | /* Copyright (C) 2009-2012 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" | |
28 | #include "unicast.h" | |
29 | #include "soft-interface.h" | |
23721387 | 30 | #include "bridge_loop_avoidance.h" |
c6c8fea2 | 31 | |
03fc7f86 | 32 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 33 | |
56303d34 | 34 | static void batadv_start_purge_timer(struct batadv_priv *bat_priv) |
c6c8fea2 | 35 | { |
03fc7f86 | 36 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
3193e8fd | 37 | queue_delayed_work(batadv_event_workqueue, |
0b0094e0 | 38 | &bat_priv->orig_work, msecs_to_jiffies(1000)); |
c6c8fea2 SE |
39 | } |
40 | ||
b8e2dd13 | 41 | /* returns 1 if they are the same originator */ |
03fc7f86 | 42 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 43 | { |
56303d34 SE |
44 | const void *data1 = container_of(node, struct batadv_orig_node, |
45 | hash_entry); | |
b8e2dd13 SE |
46 | |
47 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
48 | } | |
49 | ||
56303d34 | 50 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
51 | { |
52 | if (bat_priv->orig_hash) | |
5346c35e | 53 | return 0; |
c6c8fea2 | 54 | |
1a8eaf07 | 55 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
56 | |
57 | if (!bat_priv->orig_hash) | |
58 | goto err; | |
59 | ||
03fc7f86 | 60 | batadv_start_purge_timer(bat_priv); |
5346c35e | 61 | return 0; |
c6c8fea2 SE |
62 | |
63 | err: | |
5346c35e | 64 | return -ENOMEM; |
c6c8fea2 SE |
65 | } |
66 | ||
56303d34 | 67 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 68 | { |
44524fcd | 69 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 70 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
71 | } |
72 | ||
e1a5382f | 73 | /* increases the refcounter of a found router */ |
56303d34 SE |
74 | struct batadv_neigh_node * |
75 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 76 | { |
56303d34 | 77 | struct batadv_neigh_node *router; |
e1a5382f LL |
78 | |
79 | rcu_read_lock(); | |
80 | router = rcu_dereference(orig_node->router); | |
81 | ||
82 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
83 | router = NULL; | |
84 | ||
85 | rcu_read_unlock(); | |
86 | return router; | |
87 | } | |
88 | ||
56303d34 SE |
89 | struct batadv_neigh_node * |
90 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
91 | const uint8_t *neigh_addr, uint32_t seqno) | |
c6c8fea2 | 92 | { |
56303d34 SE |
93 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
94 | struct batadv_neigh_node *neigh_node; | |
c6c8fea2 | 95 | |
704509b8 | 96 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 97 | if (!neigh_node) |
7ae8b285 | 98 | goto out; |
c6c8fea2 | 99 | |
9591a79f | 100 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 101 | |
7ae8b285 | 102 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 103 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
104 | |
105 | /* extra reference for return */ | |
106 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 107 | |
39c75a51 | 108 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
109 | "Creating new neighbor %pM, initial seqno %d\n", |
110 | neigh_addr, seqno); | |
7ae8b285 ML |
111 | |
112 | out: | |
c6c8fea2 SE |
113 | return neigh_node; |
114 | } | |
115 | ||
03fc7f86 | 116 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 117 | { |
9591a79f | 118 | struct hlist_node *node, *node_tmp; |
56303d34 SE |
119 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
120 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 121 | |
56303d34 | 122 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 123 | |
f987ed6e ML |
124 | spin_lock_bh(&orig_node->neigh_list_lock); |
125 | ||
a4c135c5 SW |
126 | /* for all bonding members ... */ |
127 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
128 | &orig_node->bond_list, bonding_list) { | |
129 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 130 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
131 | } |
132 | ||
c6c8fea2 | 133 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
134 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
135 | &orig_node->neigh_list, list) { | |
f987ed6e | 136 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 137 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
138 | } |
139 | ||
f987ed6e ML |
140 | spin_unlock_bh(&orig_node->neigh_list_lock); |
141 | ||
88ed1e77 | 142 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
143 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
144 | "originator timed out"); | |
c6c8fea2 | 145 | |
a73105b8 | 146 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
147 | kfree(orig_node->bcast_own); |
148 | kfree(orig_node->bcast_own_sum); | |
149 | kfree(orig_node); | |
150 | } | |
151 | ||
56303d34 | 152 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
153 | { |
154 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 155 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
156 | } |
157 | ||
56303d34 | 158 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 159 | { |
5bf74e9c | 160 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 161 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 162 | struct hlist_head *head; |
16b1aba8 | 163 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 164 | struct batadv_orig_node *orig_node; |
c90681b8 | 165 | uint32_t i; |
16b1aba8 ML |
166 | |
167 | if (!hash) | |
c6c8fea2 SE |
168 | return; |
169 | ||
170 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
171 | ||
c6c8fea2 | 172 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
173 | |
174 | for (i = 0; i < hash->size; i++) { | |
175 | head = &hash->table[i]; | |
176 | list_lock = &hash->list_locks[i]; | |
177 | ||
178 | spin_lock_bh(list_lock); | |
7aadf889 ML |
179 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
180 | head, hash_entry) { | |
16b1aba8 | 181 | |
7aadf889 | 182 | hlist_del_rcu(node); |
7d211efc | 183 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
184 | } |
185 | spin_unlock_bh(list_lock); | |
186 | } | |
187 | ||
1a8eaf07 | 188 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
189 | } |
190 | ||
191 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
192 | * address if it does not exits |
193 | */ | |
56303d34 SE |
194 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
195 | const uint8_t *addr) | |
c6c8fea2 | 196 | { |
56303d34 | 197 | struct batadv_orig_node *orig_node; |
c6c8fea2 SE |
198 | int size; |
199 | int hash_added; | |
42d0b044 | 200 | unsigned long reset_time; |
c6c8fea2 | 201 | |
da641193 | 202 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 203 | if (orig_node) |
c6c8fea2 SE |
204 | return orig_node; |
205 | ||
39c75a51 SE |
206 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
207 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 208 | |
704509b8 | 209 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
210 | if (!orig_node) |
211 | return NULL; | |
212 | ||
9591a79f | 213 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 214 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 215 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 216 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 217 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 218 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
219 | |
220 | /* extra reference for return */ | |
221 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 222 | |
17071578 | 223 | orig_node->tt_initialised = false; |
16b1aba8 | 224 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 225 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 226 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 227 | orig_node->router = NULL; |
c8c991bf AQ |
228 | orig_node->tt_crc = 0; |
229 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 230 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
231 | orig_node->tt_buff_len = 0; |
232 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
233 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
234 | orig_node->bcast_seqno_reset = reset_time; | |
235 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 236 | |
a4c135c5 SW |
237 | atomic_set(&orig_node->bond_candidates, 0); |
238 | ||
42d0b044 | 239 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
240 | |
241 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
242 | if (!orig_node->bcast_own) | |
243 | goto free_orig_node; | |
244 | ||
245 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
246 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
247 | ||
248 | INIT_LIST_HEAD(&orig_node->frag_list); | |
249 | orig_node->last_frag_packet = 0; | |
250 | ||
251 | if (!orig_node->bcast_own_sum) | |
252 | goto free_bcast_own; | |
253 | ||
03fc7f86 | 254 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 255 | batadv_choose_orig, orig_node, |
c0a55929 | 256 | &orig_node->hash_entry); |
1a1f37d9 | 257 | if (hash_added != 0) |
c6c8fea2 SE |
258 | goto free_bcast_own_sum; |
259 | ||
260 | return orig_node; | |
261 | free_bcast_own_sum: | |
262 | kfree(orig_node->bcast_own_sum); | |
263 | free_bcast_own: | |
264 | kfree(orig_node->bcast_own); | |
265 | free_orig_node: | |
266 | kfree(orig_node); | |
267 | return NULL; | |
268 | } | |
269 | ||
56303d34 SE |
270 | static bool |
271 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
272 | struct batadv_orig_node *orig_node, | |
273 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 274 | { |
9591a79f | 275 | struct hlist_node *node, *node_tmp; |
56303d34 | 276 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 277 | bool neigh_purged = false; |
0b0094e0 | 278 | unsigned long last_seen; |
56303d34 | 279 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
280 | |
281 | *best_neigh_node = NULL; | |
282 | ||
f987ed6e ML |
283 | spin_lock_bh(&orig_node->neigh_list_lock); |
284 | ||
c6c8fea2 | 285 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
286 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
287 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 288 | |
1eda58bf SE |
289 | last_seen = neigh_node->last_seen; |
290 | if_incoming = neigh_node->if_incoming; | |
291 | ||
42d0b044 | 292 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
293 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
294 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
295 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
1eda58bf | 296 | |
e9a4f295 SE |
297 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
298 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
299 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 300 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
301 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
302 | orig_node->orig, neigh_node->addr, | |
303 | if_incoming->net_dev->name); | |
c6c8fea2 | 304 | else |
39c75a51 | 305 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
306 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
307 | orig_node->orig, neigh_node->addr, | |
308 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
309 | |
310 | neigh_purged = true; | |
9591a79f | 311 | |
f987ed6e | 312 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 313 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 314 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
315 | } else { |
316 | if ((!*best_neigh_node) || | |
317 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
318 | *best_neigh_node = neigh_node; | |
319 | } | |
320 | } | |
f987ed6e ML |
321 | |
322 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
323 | return neigh_purged; |
324 | } | |
325 | ||
56303d34 SE |
326 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
327 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 328 | { |
56303d34 | 329 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 330 | |
42d0b044 SE |
331 | if (batadv_has_timed_out(orig_node->last_seen, |
332 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 333 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
334 | "Originator timeout: originator %pM, last_seen %u\n", |
335 | orig_node->orig, | |
336 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
337 | return true; |
338 | } else { | |
03fc7f86 SE |
339 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
340 | &best_neigh_node)) | |
30d3c511 SE |
341 | batadv_update_route(bat_priv, orig_node, |
342 | best_neigh_node); | |
c6c8fea2 SE |
343 | } |
344 | ||
345 | return false; | |
346 | } | |
347 | ||
56303d34 | 348 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 349 | { |
5bf74e9c | 350 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 351 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 352 | struct hlist_head *head; |
fb778ea1 | 353 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 354 | struct batadv_orig_node *orig_node; |
c90681b8 | 355 | uint32_t i; |
c6c8fea2 SE |
356 | |
357 | if (!hash) | |
358 | return; | |
359 | ||
c6c8fea2 SE |
360 | /* for all origins... */ |
361 | for (i = 0; i < hash->size; i++) { | |
362 | head = &hash->table[i]; | |
fb778ea1 | 363 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 364 | |
fb778ea1 | 365 | spin_lock_bh(list_lock); |
7aadf889 ML |
366 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
367 | head, hash_entry) { | |
03fc7f86 | 368 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
c6c8fea2 | 369 | if (orig_node->gw_flags) |
7cf06bc6 SE |
370 | batadv_gw_node_delete(bat_priv, |
371 | orig_node); | |
7aadf889 | 372 | hlist_del_rcu(node); |
7d211efc | 373 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 374 | continue; |
c6c8fea2 SE |
375 | } |
376 | ||
1eda58bf | 377 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
4d5d2db8 | 378 | BATADV_FRAG_TIMEOUT)) |
88ed1e77 | 379 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 380 | } |
fb778ea1 | 381 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
382 | } |
383 | ||
7cf06bc6 SE |
384 | batadv_gw_node_purge(bat_priv); |
385 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
386 | } |
387 | ||
03fc7f86 | 388 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 389 | { |
56303d34 SE |
390 | struct delayed_work *delayed_work; |
391 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 392 | |
56303d34 SE |
393 | delayed_work = container_of(work, struct delayed_work, work); |
394 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 SE |
395 | _batadv_purge_orig(bat_priv); |
396 | batadv_start_purge_timer(bat_priv); | |
c6c8fea2 SE |
397 | } |
398 | ||
56303d34 | 399 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 400 | { |
03fc7f86 | 401 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
402 | } |
403 | ||
7d211efc | 404 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
405 | { |
406 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 407 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 408 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 409 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 410 | struct hlist_head *head; |
56303d34 SE |
411 | struct batadv_hard_iface *primary_if; |
412 | struct batadv_orig_node *orig_node; | |
413 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
414 | int batman_count = 0; |
415 | int last_seen_secs; | |
416 | int last_seen_msecs; | |
0aca2369 | 417 | unsigned long last_seen_jiffies; |
c90681b8 | 418 | uint32_t i; |
32ae9b22 | 419 | |
30da63a6 ML |
420 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
421 | if (!primary_if) | |
32ae9b22 | 422 | goto out; |
c6c8fea2 | 423 | |
44c4349a | 424 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 425 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 426 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 427 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
428 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
429 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 430 | |
c6c8fea2 SE |
431 | for (i = 0; i < hash->size; i++) { |
432 | head = &hash->table[i]; | |
433 | ||
fb778ea1 | 434 | rcu_read_lock(); |
7aadf889 | 435 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
7d211efc | 436 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 437 | if (!neigh_node) |
c6c8fea2 SE |
438 | continue; |
439 | ||
e1a5382f LL |
440 | if (neigh_node->tq_avg == 0) |
441 | goto next; | |
c6c8fea2 | 442 | |
0aca2369 SE |
443 | last_seen_jiffies = jiffies - orig_node->last_seen; |
444 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
445 | last_seen_secs = last_seen_msecs / 1000; | |
446 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 447 | |
c6c8fea2 SE |
448 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
449 | orig_node->orig, last_seen_secs, | |
450 | last_seen_msecs, neigh_node->tq_avg, | |
451 | neigh_node->addr, | |
452 | neigh_node->if_incoming->net_dev->name); | |
453 | ||
e1a5382f | 454 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 455 | &orig_node->neigh_list, list) { |
e1a5382f LL |
456 | seq_printf(seq, " %pM (%3i)", |
457 | neigh_node_tmp->addr, | |
458 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
459 | } |
460 | ||
461 | seq_printf(seq, "\n"); | |
462 | batman_count++; | |
e1a5382f LL |
463 | |
464 | next: | |
7d211efc | 465 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 466 | } |
fb778ea1 | 467 | rcu_read_unlock(); |
c6c8fea2 SE |
468 | } |
469 | ||
e1a5382f | 470 | if (batman_count == 0) |
c6c8fea2 SE |
471 | seq_printf(seq, "No batman nodes in range ...\n"); |
472 | ||
32ae9b22 ML |
473 | out: |
474 | if (primary_if) | |
e5d89254 | 475 | batadv_hardif_free_ref(primary_if); |
30da63a6 | 476 | return 0; |
c6c8fea2 SE |
477 | } |
478 | ||
56303d34 SE |
479 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
480 | int max_if_num) | |
c6c8fea2 SE |
481 | { |
482 | void *data_ptr; | |
42d0b044 | 483 | size_t data_size, old_size; |
c6c8fea2 | 484 | |
42d0b044 SE |
485 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
486 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
487 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 488 | if (!data_ptr) |
5346c35e | 489 | return -ENOMEM; |
c6c8fea2 | 490 | |
42d0b044 | 491 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
492 | kfree(orig_node->bcast_own); |
493 | orig_node->bcast_own = data_ptr; | |
494 | ||
495 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 496 | if (!data_ptr) |
5346c35e | 497 | return -ENOMEM; |
c6c8fea2 SE |
498 | |
499 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
500 | (max_if_num - 1) * sizeof(uint8_t)); | |
501 | kfree(orig_node->bcast_own_sum); | |
502 | orig_node->bcast_own_sum = data_ptr; | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
56303d34 SE |
507 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
508 | int max_if_num) | |
c6c8fea2 | 509 | { |
56303d34 | 510 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 511 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 512 | struct hlist_node *node; |
c6c8fea2 | 513 | struct hlist_head *head; |
56303d34 | 514 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
515 | uint32_t i; |
516 | int ret; | |
c6c8fea2 SE |
517 | |
518 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
519 | * if_num |
520 | */ | |
c6c8fea2 SE |
521 | for (i = 0; i < hash->size; i++) { |
522 | head = &hash->table[i]; | |
523 | ||
fb778ea1 | 524 | rcu_read_lock(); |
7aadf889 | 525 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 526 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 527 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
528 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
529 | ||
5346c35e | 530 | if (ret == -ENOMEM) |
c6c8fea2 SE |
531 | goto err; |
532 | } | |
fb778ea1 | 533 | rcu_read_unlock(); |
c6c8fea2 SE |
534 | } |
535 | ||
c6c8fea2 SE |
536 | return 0; |
537 | ||
538 | err: | |
fb778ea1 | 539 | rcu_read_unlock(); |
c6c8fea2 SE |
540 | return -ENOMEM; |
541 | } | |
542 | ||
56303d34 | 543 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 544 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
545 | { |
546 | void *data_ptr = NULL; | |
547 | int chunk_size; | |
548 | ||
549 | /* last interface was removed */ | |
550 | if (max_if_num == 0) | |
551 | goto free_bcast_own; | |
552 | ||
42d0b044 | 553 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 554 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 555 | if (!data_ptr) |
5346c35e | 556 | return -ENOMEM; |
c6c8fea2 SE |
557 | |
558 | /* copy first part */ | |
559 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
560 | ||
561 | /* copy second part */ | |
38e3c5f0 | 562 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
563 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
564 | (max_if_num - del_if_num) * chunk_size); | |
565 | ||
566 | free_bcast_own: | |
567 | kfree(orig_node->bcast_own); | |
568 | orig_node->bcast_own = data_ptr; | |
569 | ||
570 | if (max_if_num == 0) | |
571 | goto free_own_sum; | |
572 | ||
573 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 574 | if (!data_ptr) |
5346c35e | 575 | return -ENOMEM; |
c6c8fea2 SE |
576 | |
577 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
578 | del_if_num * sizeof(uint8_t)); | |
579 | ||
38e3c5f0 | 580 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
581 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
582 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
583 | ||
584 | free_own_sum: | |
585 | kfree(orig_node->bcast_own_sum); | |
586 | orig_node->bcast_own_sum = data_ptr; | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
56303d34 SE |
591 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
592 | int max_if_num) | |
c6c8fea2 | 593 | { |
56303d34 | 594 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 595 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 596 | struct hlist_node *node; |
c6c8fea2 | 597 | struct hlist_head *head; |
56303d34 SE |
598 | struct batadv_hard_iface *hard_iface_tmp; |
599 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
600 | uint32_t i; |
601 | int ret; | |
c6c8fea2 SE |
602 | |
603 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
604 | * if_num |
605 | */ | |
c6c8fea2 SE |
606 | for (i = 0; i < hash->size; i++) { |
607 | head = &hash->table[i]; | |
608 | ||
fb778ea1 | 609 | rcu_read_lock(); |
7aadf889 | 610 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 611 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
612 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
613 | hard_iface->if_num); | |
2ae2daf6 | 614 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 615 | |
5346c35e | 616 | if (ret == -ENOMEM) |
c6c8fea2 SE |
617 | goto err; |
618 | } | |
fb778ea1 | 619 | rcu_read_unlock(); |
c6c8fea2 SE |
620 | } |
621 | ||
622 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
623 | rcu_read_lock(); | |
3193e8fd | 624 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 625 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
626 | continue; |
627 | ||
e6c10f43 | 628 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
629 | continue; |
630 | ||
e6c10f43 | 631 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
632 | continue; |
633 | ||
e6c10f43 ML |
634 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
635 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
636 | } |
637 | rcu_read_unlock(); | |
638 | ||
e6c10f43 | 639 | hard_iface->if_num = -1; |
c6c8fea2 SE |
640 | return 0; |
641 | ||
642 | err: | |
fb778ea1 | 643 | rcu_read_unlock(); |
c6c8fea2 SE |
644 | return -ENOMEM; |
645 | } |