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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 SE |
20 | #include "main.h" |
21 | #include "originator.h" | |
22 | #include "hash.h" | |
23 | #include "translation-table.h" | |
24 | #include "routing.h" | |
25 | #include "gateway_client.h" | |
26 | #include "hard-interface.h" | |
27 | #include "unicast.h" | |
28 | #include "soft-interface.h" | |
23721387 | 29 | #include "bridge_loop_avoidance.h" |
c6c8fea2 | 30 | |
03fc7f86 | 31 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 32 | |
56303d34 | 33 | static void batadv_start_purge_timer(struct batadv_priv *bat_priv) |
c6c8fea2 | 34 | { |
03fc7f86 | 35 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
3193e8fd | 36 | queue_delayed_work(batadv_event_workqueue, |
0b0094e0 | 37 | &bat_priv->orig_work, msecs_to_jiffies(1000)); |
c6c8fea2 SE |
38 | } |
39 | ||
b8e2dd13 | 40 | /* returns 1 if they are the same originator */ |
03fc7f86 | 41 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 42 | { |
56303d34 SE |
43 | const void *data1 = container_of(node, struct batadv_orig_node, |
44 | hash_entry); | |
b8e2dd13 SE |
45 | |
46 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
47 | } | |
48 | ||
56303d34 | 49 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
50 | { |
51 | if (bat_priv->orig_hash) | |
5346c35e | 52 | return 0; |
c6c8fea2 | 53 | |
1a8eaf07 | 54 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
55 | |
56 | if (!bat_priv->orig_hash) | |
57 | goto err; | |
58 | ||
03fc7f86 | 59 | batadv_start_purge_timer(bat_priv); |
5346c35e | 60 | return 0; |
c6c8fea2 SE |
61 | |
62 | err: | |
5346c35e | 63 | return -ENOMEM; |
c6c8fea2 SE |
64 | } |
65 | ||
56303d34 | 66 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 67 | { |
44524fcd | 68 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 69 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
70 | } |
71 | ||
e1a5382f | 72 | /* increases the refcounter of a found router */ |
56303d34 SE |
73 | struct batadv_neigh_node * |
74 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 75 | { |
56303d34 | 76 | struct batadv_neigh_node *router; |
e1a5382f LL |
77 | |
78 | rcu_read_lock(); | |
79 | router = rcu_dereference(orig_node->router); | |
80 | ||
81 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
82 | router = NULL; | |
83 | ||
84 | rcu_read_unlock(); | |
85 | return router; | |
86 | } | |
87 | ||
56303d34 SE |
88 | struct batadv_neigh_node * |
89 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
90 | const uint8_t *neigh_addr, uint32_t seqno) | |
c6c8fea2 | 91 | { |
56303d34 SE |
92 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
93 | struct batadv_neigh_node *neigh_node; | |
c6c8fea2 | 94 | |
704509b8 | 95 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 96 | if (!neigh_node) |
7ae8b285 | 97 | goto out; |
c6c8fea2 | 98 | |
9591a79f | 99 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 100 | |
7ae8b285 | 101 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 102 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
103 | |
104 | /* extra reference for return */ | |
105 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 106 | |
39c75a51 | 107 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
108 | "Creating new neighbor %pM, initial seqno %d\n", |
109 | neigh_addr, seqno); | |
7ae8b285 ML |
110 | |
111 | out: | |
c6c8fea2 SE |
112 | return neigh_node; |
113 | } | |
114 | ||
03fc7f86 | 115 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 116 | { |
9591a79f | 117 | struct hlist_node *node, *node_tmp; |
56303d34 SE |
118 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
119 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 120 | |
56303d34 | 121 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 122 | |
f987ed6e ML |
123 | spin_lock_bh(&orig_node->neigh_list_lock); |
124 | ||
a4c135c5 SW |
125 | /* for all bonding members ... */ |
126 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
127 | &orig_node->bond_list, bonding_list) { | |
128 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 129 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
130 | } |
131 | ||
c6c8fea2 | 132 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
133 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
134 | &orig_node->neigh_list, list) { | |
f987ed6e | 135 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 136 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
137 | } |
138 | ||
f987ed6e ML |
139 | spin_unlock_bh(&orig_node->neigh_list_lock); |
140 | ||
88ed1e77 | 141 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
142 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
143 | "originator timed out"); | |
c6c8fea2 | 144 | |
a73105b8 | 145 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
146 | kfree(orig_node->bcast_own); |
147 | kfree(orig_node->bcast_own_sum); | |
148 | kfree(orig_node); | |
149 | } | |
150 | ||
56303d34 | 151 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
152 | { |
153 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 154 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
155 | } |
156 | ||
56303d34 | 157 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 158 | { |
5bf74e9c | 159 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 160 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 161 | struct hlist_head *head; |
16b1aba8 | 162 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 163 | struct batadv_orig_node *orig_node; |
c90681b8 | 164 | uint32_t i; |
16b1aba8 ML |
165 | |
166 | if (!hash) | |
c6c8fea2 SE |
167 | return; |
168 | ||
169 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
170 | ||
c6c8fea2 | 171 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
172 | |
173 | for (i = 0; i < hash->size; i++) { | |
174 | head = &hash->table[i]; | |
175 | list_lock = &hash->list_locks[i]; | |
176 | ||
177 | spin_lock_bh(list_lock); | |
7aadf889 ML |
178 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
179 | head, hash_entry) { | |
16b1aba8 | 180 | |
7aadf889 | 181 | hlist_del_rcu(node); |
7d211efc | 182 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
183 | } |
184 | spin_unlock_bh(list_lock); | |
185 | } | |
186 | ||
1a8eaf07 | 187 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
188 | } |
189 | ||
190 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
191 | * address if it does not exits |
192 | */ | |
56303d34 SE |
193 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
194 | const uint8_t *addr) | |
c6c8fea2 | 195 | { |
56303d34 | 196 | struct batadv_orig_node *orig_node; |
c6c8fea2 SE |
197 | int size; |
198 | int hash_added; | |
42d0b044 | 199 | unsigned long reset_time; |
c6c8fea2 | 200 | |
da641193 | 201 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 202 | if (orig_node) |
c6c8fea2 SE |
203 | return orig_node; |
204 | ||
39c75a51 SE |
205 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
206 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 207 | |
704509b8 | 208 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
209 | if (!orig_node) |
210 | return NULL; | |
211 | ||
9591a79f | 212 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 213 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 214 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 215 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 216 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 217 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
218 | |
219 | /* extra reference for return */ | |
220 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 221 | |
17071578 | 222 | orig_node->tt_initialised = false; |
cc47f66e | 223 | orig_node->tt_poss_change = false; |
16b1aba8 | 224 | orig_node->bat_priv = bat_priv; |
c6c8fea2 SE |
225 | memcpy(orig_node->orig, addr, ETH_ALEN); |
226 | orig_node->router = NULL; | |
c8c991bf AQ |
227 | orig_node->tt_crc = 0; |
228 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 229 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
230 | orig_node->tt_buff_len = 0; |
231 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
232 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
233 | orig_node->bcast_seqno_reset = reset_time; | |
234 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 235 | |
a4c135c5 SW |
236 | atomic_set(&orig_node->bond_candidates, 0); |
237 | ||
42d0b044 | 238 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
239 | |
240 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
241 | if (!orig_node->bcast_own) | |
242 | goto free_orig_node; | |
243 | ||
244 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
245 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
246 | ||
247 | INIT_LIST_HEAD(&orig_node->frag_list); | |
248 | orig_node->last_frag_packet = 0; | |
249 | ||
250 | if (!orig_node->bcast_own_sum) | |
251 | goto free_bcast_own; | |
252 | ||
03fc7f86 | 253 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 254 | batadv_choose_orig, orig_node, |
c0a55929 | 255 | &orig_node->hash_entry); |
1a1f37d9 | 256 | if (hash_added != 0) |
c6c8fea2 SE |
257 | goto free_bcast_own_sum; |
258 | ||
259 | return orig_node; | |
260 | free_bcast_own_sum: | |
261 | kfree(orig_node->bcast_own_sum); | |
262 | free_bcast_own: | |
263 | kfree(orig_node->bcast_own); | |
264 | free_orig_node: | |
265 | kfree(orig_node); | |
266 | return NULL; | |
267 | } | |
268 | ||
56303d34 SE |
269 | static bool |
270 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
271 | struct batadv_orig_node *orig_node, | |
272 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 273 | { |
9591a79f | 274 | struct hlist_node *node, *node_tmp; |
56303d34 | 275 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 276 | bool neigh_purged = false; |
0b0094e0 | 277 | unsigned long last_seen; |
56303d34 | 278 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
279 | |
280 | *best_neigh_node = NULL; | |
281 | ||
f987ed6e ML |
282 | spin_lock_bh(&orig_node->neigh_list_lock); |
283 | ||
c6c8fea2 | 284 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
285 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
286 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 287 | |
1eda58bf SE |
288 | last_seen = neigh_node->last_seen; |
289 | if_incoming = neigh_node->if_incoming; | |
290 | ||
42d0b044 | 291 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
292 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
293 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
294 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
1eda58bf | 295 | |
e9a4f295 SE |
296 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
297 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
298 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 299 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
300 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
301 | orig_node->orig, neigh_node->addr, | |
302 | if_incoming->net_dev->name); | |
c6c8fea2 | 303 | else |
39c75a51 | 304 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
305 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
306 | orig_node->orig, neigh_node->addr, | |
307 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
308 | |
309 | neigh_purged = true; | |
9591a79f | 310 | |
f987ed6e | 311 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 312 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 313 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
314 | } else { |
315 | if ((!*best_neigh_node) || | |
316 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
317 | *best_neigh_node = neigh_node; | |
318 | } | |
319 | } | |
f987ed6e ML |
320 | |
321 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
322 | return neigh_purged; |
323 | } | |
324 | ||
56303d34 SE |
325 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
326 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 327 | { |
56303d34 | 328 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 329 | |
42d0b044 SE |
330 | if (batadv_has_timed_out(orig_node->last_seen, |
331 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 332 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
333 | "Originator timeout: originator %pM, last_seen %u\n", |
334 | orig_node->orig, | |
335 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
336 | return true; |
337 | } else { | |
03fc7f86 SE |
338 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
339 | &best_neigh_node)) | |
30d3c511 SE |
340 | batadv_update_route(bat_priv, orig_node, |
341 | best_neigh_node); | |
c6c8fea2 SE |
342 | } |
343 | ||
344 | return false; | |
345 | } | |
346 | ||
56303d34 | 347 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 348 | { |
5bf74e9c | 349 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 350 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 351 | struct hlist_head *head; |
fb778ea1 | 352 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 353 | struct batadv_orig_node *orig_node; |
c90681b8 | 354 | uint32_t i; |
c6c8fea2 SE |
355 | |
356 | if (!hash) | |
357 | return; | |
358 | ||
c6c8fea2 SE |
359 | /* for all origins... */ |
360 | for (i = 0; i < hash->size; i++) { | |
361 | head = &hash->table[i]; | |
fb778ea1 | 362 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 363 | |
fb778ea1 | 364 | spin_lock_bh(list_lock); |
7aadf889 ML |
365 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
366 | head, hash_entry) { | |
03fc7f86 | 367 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
c6c8fea2 | 368 | if (orig_node->gw_flags) |
7cf06bc6 SE |
369 | batadv_gw_node_delete(bat_priv, |
370 | orig_node); | |
7aadf889 | 371 | hlist_del_rcu(node); |
7d211efc | 372 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 373 | continue; |
c6c8fea2 SE |
374 | } |
375 | ||
1eda58bf | 376 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
4d5d2db8 | 377 | BATADV_FRAG_TIMEOUT)) |
88ed1e77 | 378 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 379 | } |
fb778ea1 | 380 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
381 | } |
382 | ||
7cf06bc6 SE |
383 | batadv_gw_node_purge(bat_priv); |
384 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
385 | } |
386 | ||
03fc7f86 | 387 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 388 | { |
56303d34 SE |
389 | struct delayed_work *delayed_work; |
390 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 391 | |
56303d34 SE |
392 | delayed_work = container_of(work, struct delayed_work, work); |
393 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 SE |
394 | _batadv_purge_orig(bat_priv); |
395 | batadv_start_purge_timer(bat_priv); | |
c6c8fea2 SE |
396 | } |
397 | ||
56303d34 | 398 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 399 | { |
03fc7f86 | 400 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
401 | } |
402 | ||
7d211efc | 403 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
404 | { |
405 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 406 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 407 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 408 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 409 | struct hlist_head *head; |
56303d34 SE |
410 | struct batadv_hard_iface *primary_if; |
411 | struct batadv_orig_node *orig_node; | |
412 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
413 | int batman_count = 0; |
414 | int last_seen_secs; | |
415 | int last_seen_msecs; | |
0aca2369 | 416 | unsigned long last_seen_jiffies; |
c90681b8 AQ |
417 | uint32_t i; |
418 | int ret = 0; | |
32ae9b22 | 419 | |
e5d89254 | 420 | primary_if = batadv_primary_if_get_selected(bat_priv); |
c6c8fea2 | 421 | |
32ae9b22 | 422 | if (!primary_if) { |
86ceb360 SE |
423 | ret = seq_printf(seq, |
424 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
425 | net_dev->name); |
426 | goto out; | |
427 | } | |
c6c8fea2 | 428 | |
e9a4f295 | 429 | if (primary_if->if_status != BATADV_IF_ACTIVE) { |
86ceb360 SE |
430 | ret = seq_printf(seq, |
431 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
432 | net_dev->name); |
433 | goto out; | |
c6c8fea2 SE |
434 | } |
435 | ||
44c4349a | 436 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 437 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 438 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 439 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
440 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
441 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 442 | |
c6c8fea2 SE |
443 | for (i = 0; i < hash->size; i++) { |
444 | head = &hash->table[i]; | |
445 | ||
fb778ea1 | 446 | rcu_read_lock(); |
7aadf889 | 447 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
7d211efc | 448 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 449 | if (!neigh_node) |
c6c8fea2 SE |
450 | continue; |
451 | ||
e1a5382f LL |
452 | if (neigh_node->tq_avg == 0) |
453 | goto next; | |
c6c8fea2 | 454 | |
0aca2369 SE |
455 | last_seen_jiffies = jiffies - orig_node->last_seen; |
456 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
457 | last_seen_secs = last_seen_msecs / 1000; | |
458 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 459 | |
c6c8fea2 SE |
460 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
461 | orig_node->orig, last_seen_secs, | |
462 | last_seen_msecs, neigh_node->tq_avg, | |
463 | neigh_node->addr, | |
464 | neigh_node->if_incoming->net_dev->name); | |
465 | ||
e1a5382f | 466 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 467 | &orig_node->neigh_list, list) { |
e1a5382f LL |
468 | seq_printf(seq, " %pM (%3i)", |
469 | neigh_node_tmp->addr, | |
470 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
471 | } |
472 | ||
473 | seq_printf(seq, "\n"); | |
474 | batman_count++; | |
e1a5382f LL |
475 | |
476 | next: | |
7d211efc | 477 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 478 | } |
fb778ea1 | 479 | rcu_read_unlock(); |
c6c8fea2 SE |
480 | } |
481 | ||
e1a5382f | 482 | if (batman_count == 0) |
c6c8fea2 SE |
483 | seq_printf(seq, "No batman nodes in range ...\n"); |
484 | ||
32ae9b22 ML |
485 | out: |
486 | if (primary_if) | |
e5d89254 | 487 | batadv_hardif_free_ref(primary_if); |
32ae9b22 | 488 | return ret; |
c6c8fea2 SE |
489 | } |
490 | ||
56303d34 SE |
491 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
492 | int max_if_num) | |
c6c8fea2 SE |
493 | { |
494 | void *data_ptr; | |
42d0b044 | 495 | size_t data_size, old_size; |
c6c8fea2 | 496 | |
42d0b044 SE |
497 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
498 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
499 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 500 | if (!data_ptr) |
5346c35e | 501 | return -ENOMEM; |
c6c8fea2 | 502 | |
42d0b044 | 503 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
504 | kfree(orig_node->bcast_own); |
505 | orig_node->bcast_own = data_ptr; | |
506 | ||
507 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 508 | if (!data_ptr) |
5346c35e | 509 | return -ENOMEM; |
c6c8fea2 SE |
510 | |
511 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
512 | (max_if_num - 1) * sizeof(uint8_t)); | |
513 | kfree(orig_node->bcast_own_sum); | |
514 | orig_node->bcast_own_sum = data_ptr; | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
56303d34 SE |
519 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
520 | int max_if_num) | |
c6c8fea2 | 521 | { |
56303d34 | 522 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 523 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 524 | struct hlist_node *node; |
c6c8fea2 | 525 | struct hlist_head *head; |
56303d34 | 526 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
527 | uint32_t i; |
528 | int ret; | |
c6c8fea2 SE |
529 | |
530 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
531 | * if_num |
532 | */ | |
c6c8fea2 SE |
533 | for (i = 0; i < hash->size; i++) { |
534 | head = &hash->table[i]; | |
535 | ||
fb778ea1 | 536 | rcu_read_lock(); |
7aadf889 | 537 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 538 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 539 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
540 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
541 | ||
5346c35e | 542 | if (ret == -ENOMEM) |
c6c8fea2 SE |
543 | goto err; |
544 | } | |
fb778ea1 | 545 | rcu_read_unlock(); |
c6c8fea2 SE |
546 | } |
547 | ||
c6c8fea2 SE |
548 | return 0; |
549 | ||
550 | err: | |
fb778ea1 | 551 | rcu_read_unlock(); |
c6c8fea2 SE |
552 | return -ENOMEM; |
553 | } | |
554 | ||
56303d34 | 555 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 556 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
557 | { |
558 | void *data_ptr = NULL; | |
559 | int chunk_size; | |
560 | ||
561 | /* last interface was removed */ | |
562 | if (max_if_num == 0) | |
563 | goto free_bcast_own; | |
564 | ||
42d0b044 | 565 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 566 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 567 | if (!data_ptr) |
5346c35e | 568 | return -ENOMEM; |
c6c8fea2 SE |
569 | |
570 | /* copy first part */ | |
571 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
572 | ||
573 | /* copy second part */ | |
38e3c5f0 | 574 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
575 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
576 | (max_if_num - del_if_num) * chunk_size); | |
577 | ||
578 | free_bcast_own: | |
579 | kfree(orig_node->bcast_own); | |
580 | orig_node->bcast_own = data_ptr; | |
581 | ||
582 | if (max_if_num == 0) | |
583 | goto free_own_sum; | |
584 | ||
585 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 586 | if (!data_ptr) |
5346c35e | 587 | return -ENOMEM; |
c6c8fea2 SE |
588 | |
589 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
590 | del_if_num * sizeof(uint8_t)); | |
591 | ||
38e3c5f0 | 592 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
593 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
594 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
595 | ||
596 | free_own_sum: | |
597 | kfree(orig_node->bcast_own_sum); | |
598 | orig_node->bcast_own_sum = data_ptr; | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
56303d34 SE |
603 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
604 | int max_if_num) | |
c6c8fea2 | 605 | { |
56303d34 | 606 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 607 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 608 | struct hlist_node *node; |
c6c8fea2 | 609 | struct hlist_head *head; |
56303d34 SE |
610 | struct batadv_hard_iface *hard_iface_tmp; |
611 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
612 | uint32_t i; |
613 | int ret; | |
c6c8fea2 SE |
614 | |
615 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
616 | * if_num |
617 | */ | |
c6c8fea2 SE |
618 | for (i = 0; i < hash->size; i++) { |
619 | head = &hash->table[i]; | |
620 | ||
fb778ea1 | 621 | rcu_read_lock(); |
7aadf889 | 622 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 623 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
624 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
625 | hard_iface->if_num); | |
2ae2daf6 | 626 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 627 | |
5346c35e | 628 | if (ret == -ENOMEM) |
c6c8fea2 SE |
629 | goto err; |
630 | } | |
fb778ea1 | 631 | rcu_read_unlock(); |
c6c8fea2 SE |
632 | } |
633 | ||
634 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
635 | rcu_read_lock(); | |
3193e8fd | 636 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 637 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
638 | continue; |
639 | ||
e6c10f43 | 640 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
641 | continue; |
642 | ||
e6c10f43 | 643 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
644 | continue; |
645 | ||
e6c10f43 ML |
646 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
647 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
648 | } |
649 | rcu_read_unlock(); | |
650 | ||
e6c10f43 | 651 | hard_iface->if_num = -1; |
c6c8fea2 SE |
652 | return 0; |
653 | ||
654 | err: | |
fb778ea1 | 655 | rcu_read_unlock(); |
c6c8fea2 SE |
656 | return -ENOMEM; |
657 | } |