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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 SE |
30 | |
31 | static void purge_orig(struct work_struct *work); | |
32 | ||
33 | static void start_purge_timer(struct bat_priv *bat_priv) | |
34 | { | |
35 | INIT_DELAYED_WORK(&bat_priv->orig_work, 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 SE |
40 | /* returns 1 if they are the same originator */ |
41 | static int compare_orig(const struct hlist_node *node, const void *data2) | |
42 | { | |
43 | const void *data1 = container_of(node, struct orig_node, hash_entry); | |
44 | ||
45 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
46 | } | |
47 | ||
7d211efc | 48 | int batadv_originator_init(struct bat_priv *bat_priv) |
c6c8fea2 SE |
49 | { |
50 | if (bat_priv->orig_hash) | |
5346c35e | 51 | return 0; |
c6c8fea2 | 52 | |
1a8eaf07 | 53 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
54 | |
55 | if (!bat_priv->orig_hash) | |
56 | goto err; | |
57 | ||
c6c8fea2 | 58 | start_purge_timer(bat_priv); |
5346c35e | 59 | return 0; |
c6c8fea2 SE |
60 | |
61 | err: | |
5346c35e | 62 | return -ENOMEM; |
c6c8fea2 SE |
63 | } |
64 | ||
7d211efc | 65 | void batadv_neigh_node_free_ref(struct neigh_node *neigh_node) |
a4c135c5 | 66 | { |
44524fcd | 67 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 68 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
69 | } |
70 | ||
e1a5382f | 71 | /* increases the refcounter of a found router */ |
7d211efc | 72 | struct neigh_node *batadv_orig_node_get_router(struct orig_node *orig_node) |
e1a5382f LL |
73 | { |
74 | struct neigh_node *router; | |
75 | ||
76 | rcu_read_lock(); | |
77 | router = rcu_dereference(orig_node->router); | |
78 | ||
79 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
80 | router = NULL; | |
81 | ||
82 | rcu_read_unlock(); | |
83 | return router; | |
84 | } | |
85 | ||
7ae8b285 ML |
86 | struct neigh_node *batadv_neigh_node_new(struct hard_iface *hard_iface, |
87 | const uint8_t *neigh_addr, | |
88 | uint32_t seqno) | |
c6c8fea2 | 89 | { |
7ae8b285 | 90 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 SE |
91 | struct neigh_node *neigh_node; |
92 | ||
704509b8 | 93 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 94 | if (!neigh_node) |
7ae8b285 | 95 | goto out; |
c6c8fea2 | 96 | |
9591a79f | 97 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 98 | |
7ae8b285 | 99 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 100 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
101 | |
102 | /* extra reference for return */ | |
103 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 104 | |
1eda58bf SE |
105 | batadv_dbg(DBG_BATMAN, bat_priv, |
106 | "Creating new neighbor %pM, initial seqno %d\n", | |
107 | neigh_addr, seqno); | |
7ae8b285 ML |
108 | |
109 | out: | |
c6c8fea2 SE |
110 | return neigh_node; |
111 | } | |
112 | ||
7b36e8ee | 113 | static void orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 114 | { |
9591a79f | 115 | struct hlist_node *node, *node_tmp; |
a4c135c5 | 116 | struct neigh_node *neigh_node, *tmp_neigh_node; |
16b1aba8 ML |
117 | struct orig_node *orig_node; |
118 | ||
7b36e8ee | 119 | orig_node = container_of(rcu, struct orig_node, rcu); |
c6c8fea2 | 120 | |
f987ed6e ML |
121 | spin_lock_bh(&orig_node->neigh_list_lock); |
122 | ||
a4c135c5 SW |
123 | /* for all bonding members ... */ |
124 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
125 | &orig_node->bond_list, bonding_list) { | |
126 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 127 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
128 | } |
129 | ||
c6c8fea2 | 130 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
131 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
132 | &orig_node->neigh_list, list) { | |
f987ed6e | 133 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 134 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
135 | } |
136 | ||
f987ed6e ML |
137 | spin_unlock_bh(&orig_node->neigh_list_lock); |
138 | ||
88ed1e77 | 139 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
140 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
141 | "originator timed out"); | |
c6c8fea2 | 142 | |
a73105b8 | 143 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
144 | kfree(orig_node->bcast_own); |
145 | kfree(orig_node->bcast_own_sum); | |
146 | kfree(orig_node); | |
147 | } | |
148 | ||
7d211efc | 149 | void batadv_orig_node_free_ref(struct orig_node *orig_node) |
7b36e8ee ML |
150 | { |
151 | if (atomic_dec_and_test(&orig_node->refcount)) | |
152 | call_rcu(&orig_node->rcu, orig_node_free_rcu); | |
153 | } | |
154 | ||
7d211efc | 155 | void batadv_originator_free(struct bat_priv *bat_priv) |
c6c8fea2 | 156 | { |
16b1aba8 | 157 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 158 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 159 | struct hlist_head *head; |
16b1aba8 ML |
160 | spinlock_t *list_lock; /* spinlock to protect write access */ |
161 | struct orig_node *orig_node; | |
c90681b8 | 162 | uint32_t i; |
16b1aba8 ML |
163 | |
164 | if (!hash) | |
c6c8fea2 SE |
165 | return; |
166 | ||
167 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
168 | ||
c6c8fea2 | 169 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
170 | |
171 | for (i = 0; i < hash->size; i++) { | |
172 | head = &hash->table[i]; | |
173 | list_lock = &hash->list_locks[i]; | |
174 | ||
175 | spin_lock_bh(list_lock); | |
7aadf889 ML |
176 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
177 | head, hash_entry) { | |
16b1aba8 | 178 | |
7aadf889 | 179 | hlist_del_rcu(node); |
7d211efc | 180 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
181 | } |
182 | spin_unlock_bh(list_lock); | |
183 | } | |
184 | ||
1a8eaf07 | 185 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
186 | } |
187 | ||
188 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
189 | * address if it does not exits |
190 | */ | |
7d211efc SE |
191 | struct orig_node *batadv_get_orig_node(struct bat_priv *bat_priv, |
192 | const uint8_t *addr) | |
c6c8fea2 SE |
193 | { |
194 | struct orig_node *orig_node; | |
195 | int size; | |
196 | int hash_added; | |
197 | ||
da641193 | 198 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 199 | if (orig_node) |
c6c8fea2 SE |
200 | return orig_node; |
201 | ||
1eda58bf SE |
202 | batadv_dbg(DBG_BATMAN, bat_priv, "Creating new originator: %pM\n", |
203 | addr); | |
c6c8fea2 | 204 | |
704509b8 | 205 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
206 | if (!orig_node) |
207 | return NULL; | |
208 | ||
9591a79f | 209 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 210 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 211 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 212 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 213 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 214 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
215 | |
216 | /* extra reference for return */ | |
217 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 218 | |
17071578 | 219 | orig_node->tt_initialised = false; |
cc47f66e | 220 | orig_node->tt_poss_change = false; |
16b1aba8 | 221 | orig_node->bat_priv = bat_priv; |
c6c8fea2 SE |
222 | memcpy(orig_node->orig, addr, ETH_ALEN); |
223 | orig_node->router = NULL; | |
c8c991bf AQ |
224 | orig_node->tt_crc = 0; |
225 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 226 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
227 | orig_node->tt_buff_len = 0; |
228 | atomic_set(&orig_node->tt_size, 0); | |
c6c8fea2 SE |
229 | orig_node->bcast_seqno_reset = jiffies - 1 |
230 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
231 | orig_node->batman_seqno_reset = jiffies - 1 | |
232 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
233 | ||
a4c135c5 SW |
234 | atomic_set(&orig_node->bond_candidates, 0); |
235 | ||
c6c8fea2 SE |
236 | size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS; |
237 | ||
238 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
239 | if (!orig_node->bcast_own) | |
240 | goto free_orig_node; | |
241 | ||
242 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
243 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
244 | ||
245 | INIT_LIST_HEAD(&orig_node->frag_list); | |
246 | orig_node->last_frag_packet = 0; | |
247 | ||
248 | if (!orig_node->bcast_own_sum) | |
249 | goto free_bcast_own; | |
250 | ||
c0a55929 | 251 | hash_added = batadv_hash_add(bat_priv->orig_hash, compare_orig, |
da641193 | 252 | batadv_choose_orig, orig_node, |
c0a55929 | 253 | &orig_node->hash_entry); |
1a1f37d9 | 254 | if (hash_added != 0) |
c6c8fea2 SE |
255 | goto free_bcast_own_sum; |
256 | ||
257 | return orig_node; | |
258 | free_bcast_own_sum: | |
259 | kfree(orig_node->bcast_own_sum); | |
260 | free_bcast_own: | |
261 | kfree(orig_node->bcast_own); | |
262 | free_orig_node: | |
263 | kfree(orig_node); | |
264 | return NULL; | |
265 | } | |
266 | ||
267 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, | |
268 | struct orig_node *orig_node, | |
269 | struct neigh_node **best_neigh_node) | |
270 | { | |
9591a79f | 271 | struct hlist_node *node, *node_tmp; |
c6c8fea2 SE |
272 | struct neigh_node *neigh_node; |
273 | bool neigh_purged = false; | |
0b0094e0 | 274 | unsigned long last_seen; |
1eda58bf | 275 | struct hard_iface *if_incoming; |
c6c8fea2 SE |
276 | |
277 | *best_neigh_node = NULL; | |
278 | ||
f987ed6e ML |
279 | spin_lock_bh(&orig_node->neigh_list_lock); |
280 | ||
c6c8fea2 | 281 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
282 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
283 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 284 | |
1eda58bf SE |
285 | last_seen = neigh_node->last_seen; |
286 | if_incoming = neigh_node->if_incoming; | |
287 | ||
288 | if ((batadv_has_timed_out(last_seen, PURGE_TIMEOUT)) || | |
289 | (if_incoming->if_status == IF_INACTIVE) || | |
290 | (if_incoming->if_status == IF_NOT_IN_USE) || | |
291 | (if_incoming->if_status == IF_TO_BE_REMOVED)) { | |
292 | ||
293 | if ((if_incoming->if_status == IF_INACTIVE) || | |
294 | (if_incoming->if_status == IF_NOT_IN_USE) || | |
295 | (if_incoming->if_status == IF_TO_BE_REMOVED)) | |
296 | batadv_dbg(DBG_BATMAN, bat_priv, | |
297 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", | |
298 | orig_node->orig, neigh_node->addr, | |
299 | if_incoming->net_dev->name); | |
c6c8fea2 | 300 | else |
1eda58bf SE |
301 | batadv_dbg(DBG_BATMAN, bat_priv, |
302 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", | |
303 | orig_node->orig, neigh_node->addr, | |
304 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
305 | |
306 | neigh_purged = true; | |
9591a79f | 307 | |
f987ed6e | 308 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 309 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 310 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
311 | } else { |
312 | if ((!*best_neigh_node) || | |
313 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
314 | *best_neigh_node = neigh_node; | |
315 | } | |
316 | } | |
f987ed6e ML |
317 | |
318 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
319 | return neigh_purged; |
320 | } | |
321 | ||
322 | static bool purge_orig_node(struct bat_priv *bat_priv, | |
323 | struct orig_node *orig_node) | |
324 | { | |
325 | struct neigh_node *best_neigh_node; | |
326 | ||
1eda58bf SE |
327 | if (batadv_has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
328 | batadv_dbg(DBG_BATMAN, bat_priv, | |
329 | "Originator timeout: originator %pM, last_seen %u\n", | |
330 | orig_node->orig, | |
331 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
332 | return true; |
333 | } else { | |
334 | if (purge_orig_neighbors(bat_priv, orig_node, | |
7c64fd98 | 335 | &best_neigh_node)) |
30d3c511 SE |
336 | batadv_update_route(bat_priv, orig_node, |
337 | best_neigh_node); | |
c6c8fea2 SE |
338 | } |
339 | ||
340 | return false; | |
341 | } | |
342 | ||
343 | static void _purge_orig(struct bat_priv *bat_priv) | |
344 | { | |
345 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 346 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 347 | struct hlist_head *head; |
fb778ea1 | 348 | spinlock_t *list_lock; /* spinlock to protect write access */ |
c6c8fea2 | 349 | struct orig_node *orig_node; |
c90681b8 | 350 | uint32_t i; |
c6c8fea2 SE |
351 | |
352 | if (!hash) | |
353 | return; | |
354 | ||
c6c8fea2 SE |
355 | /* for all origins... */ |
356 | for (i = 0; i < hash->size; i++) { | |
357 | head = &hash->table[i]; | |
fb778ea1 | 358 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 359 | |
fb778ea1 | 360 | spin_lock_bh(list_lock); |
7aadf889 ML |
361 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
362 | head, hash_entry) { | |
c6c8fea2 SE |
363 | if (purge_orig_node(bat_priv, orig_node)) { |
364 | if (orig_node->gw_flags) | |
7cf06bc6 SE |
365 | batadv_gw_node_delete(bat_priv, |
366 | orig_node); | |
7aadf889 | 367 | hlist_del_rcu(node); |
7d211efc | 368 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 369 | continue; |
c6c8fea2 SE |
370 | } |
371 | ||
1eda58bf SE |
372 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
373 | FRAG_TIMEOUT)) | |
88ed1e77 | 374 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 375 | } |
fb778ea1 | 376 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
377 | } |
378 | ||
7cf06bc6 SE |
379 | batadv_gw_node_purge(bat_priv); |
380 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
381 | } |
382 | ||
383 | static void purge_orig(struct work_struct *work) | |
384 | { | |
385 | struct delayed_work *delayed_work = | |
386 | container_of(work, struct delayed_work, work); | |
387 | struct bat_priv *bat_priv = | |
388 | container_of(delayed_work, struct bat_priv, orig_work); | |
389 | ||
390 | _purge_orig(bat_priv); | |
391 | start_purge_timer(bat_priv); | |
392 | } | |
393 | ||
7d211efc | 394 | void batadv_purge_orig_ref(struct bat_priv *bat_priv) |
c6c8fea2 SE |
395 | { |
396 | _purge_orig(bat_priv); | |
397 | } | |
398 | ||
7d211efc | 399 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
400 | { |
401 | struct net_device *net_dev = (struct net_device *)seq->private; | |
402 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
403 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 404 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 405 | struct hlist_head *head; |
32ae9b22 | 406 | struct hard_iface *primary_if; |
c6c8fea2 | 407 | struct orig_node *orig_node; |
e1a5382f | 408 | struct neigh_node *neigh_node, *neigh_node_tmp; |
c6c8fea2 SE |
409 | int batman_count = 0; |
410 | int last_seen_secs; | |
411 | int last_seen_msecs; | |
c90681b8 AQ |
412 | uint32_t i; |
413 | int ret = 0; | |
32ae9b22 | 414 | |
e5d89254 | 415 | primary_if = batadv_primary_if_get_selected(bat_priv); |
c6c8fea2 | 416 | |
32ae9b22 | 417 | if (!primary_if) { |
86ceb360 SE |
418 | ret = seq_printf(seq, |
419 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
420 | net_dev->name); |
421 | goto out; | |
422 | } | |
c6c8fea2 | 423 | |
32ae9b22 | 424 | if (primary_if->if_status != IF_ACTIVE) { |
86ceb360 SE |
425 | ret = seq_printf(seq, |
426 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
427 | net_dev->name); |
428 | goto out; | |
c6c8fea2 SE |
429 | } |
430 | ||
44c4349a SE |
431 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
432 | SOURCE_VERSION, primary_if->net_dev->name, | |
32ae9b22 | 433 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 SE |
434 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
435 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", | |
436 | "outgoingIF", "Potential nexthops"); | |
437 | ||
c6c8fea2 SE |
438 | for (i = 0; i < hash->size; i++) { |
439 | head = &hash->table[i]; | |
440 | ||
fb778ea1 | 441 | rcu_read_lock(); |
7aadf889 | 442 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
7d211efc | 443 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 444 | if (!neigh_node) |
c6c8fea2 SE |
445 | continue; |
446 | ||
e1a5382f LL |
447 | if (neigh_node->tq_avg == 0) |
448 | goto next; | |
c6c8fea2 SE |
449 | |
450 | last_seen_secs = jiffies_to_msecs(jiffies - | |
d7b2a97e | 451 | orig_node->last_seen) / 1000; |
c6c8fea2 | 452 | last_seen_msecs = jiffies_to_msecs(jiffies - |
d7b2a97e | 453 | orig_node->last_seen) % 1000; |
c6c8fea2 | 454 | |
c6c8fea2 SE |
455 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
456 | orig_node->orig, last_seen_secs, | |
457 | last_seen_msecs, neigh_node->tq_avg, | |
458 | neigh_node->addr, | |
459 | neigh_node->if_incoming->net_dev->name); | |
460 | ||
e1a5382f | 461 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 462 | &orig_node->neigh_list, list) { |
e1a5382f LL |
463 | seq_printf(seq, " %pM (%3i)", |
464 | neigh_node_tmp->addr, | |
465 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
466 | } |
467 | ||
468 | seq_printf(seq, "\n"); | |
469 | batman_count++; | |
e1a5382f LL |
470 | |
471 | next: | |
7d211efc | 472 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 473 | } |
fb778ea1 | 474 | rcu_read_unlock(); |
c6c8fea2 SE |
475 | } |
476 | ||
e1a5382f | 477 | if (batman_count == 0) |
c6c8fea2 SE |
478 | seq_printf(seq, "No batman nodes in range ...\n"); |
479 | ||
32ae9b22 ML |
480 | out: |
481 | if (primary_if) | |
e5d89254 | 482 | batadv_hardif_free_ref(primary_if); |
32ae9b22 | 483 | return ret; |
c6c8fea2 SE |
484 | } |
485 | ||
486 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) | |
487 | { | |
488 | void *data_ptr; | |
489 | ||
490 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, | |
491 | GFP_ATOMIC); | |
320f422f | 492 | if (!data_ptr) |
5346c35e | 493 | return -ENOMEM; |
c6c8fea2 SE |
494 | |
495 | memcpy(data_ptr, orig_node->bcast_own, | |
496 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); | |
497 | kfree(orig_node->bcast_own); | |
498 | orig_node->bcast_own = data_ptr; | |
499 | ||
500 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 501 | if (!data_ptr) |
5346c35e | 502 | return -ENOMEM; |
c6c8fea2 SE |
503 | |
504 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
505 | (max_if_num - 1) * sizeof(uint8_t)); | |
506 | kfree(orig_node->bcast_own_sum); | |
507 | orig_node->bcast_own_sum = data_ptr; | |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
7d211efc | 512 | int batadv_orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 513 | { |
e6c10f43 | 514 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 515 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 516 | struct hlist_node *node; |
c6c8fea2 | 517 | struct hlist_head *head; |
c6c8fea2 | 518 | struct orig_node *orig_node; |
c90681b8 AQ |
519 | uint32_t i; |
520 | int ret; | |
c6c8fea2 SE |
521 | |
522 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
523 | * if_num |
524 | */ | |
c6c8fea2 SE |
525 | for (i = 0; i < hash->size; i++) { |
526 | head = &hash->table[i]; | |
527 | ||
fb778ea1 | 528 | rcu_read_lock(); |
7aadf889 | 529 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 ML |
530 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
531 | ret = orig_node_add_if(orig_node, max_if_num); | |
532 | spin_unlock_bh(&orig_node->ogm_cnt_lock); | |
533 | ||
5346c35e | 534 | if (ret == -ENOMEM) |
c6c8fea2 SE |
535 | goto err; |
536 | } | |
fb778ea1 | 537 | rcu_read_unlock(); |
c6c8fea2 SE |
538 | } |
539 | ||
c6c8fea2 SE |
540 | return 0; |
541 | ||
542 | err: | |
fb778ea1 | 543 | rcu_read_unlock(); |
c6c8fea2 SE |
544 | return -ENOMEM; |
545 | } | |
546 | ||
547 | static int orig_node_del_if(struct orig_node *orig_node, | |
548 | int max_if_num, int del_if_num) | |
549 | { | |
550 | void *data_ptr = NULL; | |
551 | int chunk_size; | |
552 | ||
553 | /* last interface was removed */ | |
554 | if (max_if_num == 0) | |
555 | goto free_bcast_own; | |
556 | ||
557 | chunk_size = sizeof(unsigned long) * NUM_WORDS; | |
558 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); | |
320f422f | 559 | if (!data_ptr) |
5346c35e | 560 | return -ENOMEM; |
c6c8fea2 SE |
561 | |
562 | /* copy first part */ | |
563 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
564 | ||
565 | /* copy second part */ | |
38e3c5f0 | 566 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
567 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
568 | (max_if_num - del_if_num) * chunk_size); | |
569 | ||
570 | free_bcast_own: | |
571 | kfree(orig_node->bcast_own); | |
572 | orig_node->bcast_own = data_ptr; | |
573 | ||
574 | if (max_if_num == 0) | |
575 | goto free_own_sum; | |
576 | ||
577 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 578 | if (!data_ptr) |
5346c35e | 579 | return -ENOMEM; |
c6c8fea2 SE |
580 | |
581 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
582 | del_if_num * sizeof(uint8_t)); | |
583 | ||
38e3c5f0 | 584 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
585 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
586 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
587 | ||
588 | free_own_sum: | |
589 | kfree(orig_node->bcast_own_sum); | |
590 | orig_node->bcast_own_sum = data_ptr; | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
7d211efc | 595 | int batadv_orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 596 | { |
e6c10f43 | 597 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 598 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 599 | struct hlist_node *node; |
c6c8fea2 | 600 | struct hlist_head *head; |
e6c10f43 | 601 | struct hard_iface *hard_iface_tmp; |
c6c8fea2 | 602 | struct orig_node *orig_node; |
c90681b8 AQ |
603 | uint32_t i; |
604 | int ret; | |
c6c8fea2 SE |
605 | |
606 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
607 | * if_num |
608 | */ | |
c6c8fea2 SE |
609 | for (i = 0; i < hash->size; i++) { |
610 | head = &hash->table[i]; | |
611 | ||
fb778ea1 | 612 | rcu_read_lock(); |
7aadf889 | 613 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 614 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 615 | ret = orig_node_del_if(orig_node, max_if_num, |
e6c10f43 | 616 | hard_iface->if_num); |
2ae2daf6 | 617 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 618 | |
5346c35e | 619 | if (ret == -ENOMEM) |
c6c8fea2 SE |
620 | goto err; |
621 | } | |
fb778ea1 | 622 | rcu_read_unlock(); |
c6c8fea2 SE |
623 | } |
624 | ||
625 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
626 | rcu_read_lock(); | |
3193e8fd | 627 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e6c10f43 | 628 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) |
c6c8fea2 SE |
629 | continue; |
630 | ||
e6c10f43 | 631 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
632 | continue; |
633 | ||
e6c10f43 | 634 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
635 | continue; |
636 | ||
e6c10f43 ML |
637 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
638 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
639 | } |
640 | rcu_read_unlock(); | |
641 | ||
e6c10f43 | 642 | hard_iface->if_num = -1; |
c6c8fea2 SE |
643 | return 0; |
644 | ||
645 | err: | |
fb778ea1 | 646 | rcu_read_unlock(); |
c6c8fea2 SE |
647 | return -ENOMEM; |
648 | } |