Commit | Line | Data |
---|---|---|
c6c8fea2 | 1 | /* |
567db7b0 | 2 | * Copyright (C) 2009-2012 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
3 | * |
4 | * Marek Lindner, Simon Wunderlich | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2 of the GNU General Public | |
8 | * License as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
18 | * 02110-1301, USA | |
19 | * | |
20 | */ | |
21 | ||
c6c8fea2 SE |
22 | #include "main.h" |
23 | #include "originator.h" | |
24 | #include "hash.h" | |
25 | #include "translation-table.h" | |
26 | #include "routing.h" | |
27 | #include "gateway_client.h" | |
28 | #include "hard-interface.h" | |
29 | #include "unicast.h" | |
30 | #include "soft-interface.h" | |
23721387 | 31 | #include "bridge_loop_avoidance.h" |
c6c8fea2 SE |
32 | |
33 | static void purge_orig(struct work_struct *work); | |
34 | ||
35 | static void start_purge_timer(struct bat_priv *bat_priv) | |
36 | { | |
37 | INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig); | |
0b0094e0 ML |
38 | queue_delayed_work(bat_event_workqueue, |
39 | &bat_priv->orig_work, msecs_to_jiffies(1000)); | |
c6c8fea2 SE |
40 | } |
41 | ||
b8e2dd13 SE |
42 | /* returns 1 if they are the same originator */ |
43 | static int compare_orig(const struct hlist_node *node, const void *data2) | |
44 | { | |
45 | const void *data1 = container_of(node, struct orig_node, hash_entry); | |
46 | ||
47 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
48 | } | |
49 | ||
7d211efc | 50 | int batadv_originator_init(struct bat_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 | ||
c6c8fea2 | 60 | start_purge_timer(bat_priv); |
5346c35e | 61 | return 0; |
c6c8fea2 SE |
62 | |
63 | err: | |
5346c35e | 64 | return -ENOMEM; |
c6c8fea2 SE |
65 | } |
66 | ||
7d211efc | 67 | void batadv_neigh_node_free_ref(struct 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 */ |
7d211efc | 74 | struct neigh_node *batadv_orig_node_get_router(struct orig_node *orig_node) |
e1a5382f LL |
75 | { |
76 | struct neigh_node *router; | |
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 | ||
7ae8b285 ML |
88 | struct neigh_node *batadv_neigh_node_new(struct hard_iface *hard_iface, |
89 | const uint8_t *neigh_addr, | |
90 | uint32_t seqno) | |
c6c8fea2 | 91 | { |
7ae8b285 | 92 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 SE |
93 | struct neigh_node *neigh_node; |
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 | |
7ae8b285 ML |
107 | bat_dbg(DBG_BATMAN, bat_priv, |
108 | "Creating new neighbor %pM, initial seqno %d\n", | |
109 | neigh_addr, seqno); | |
110 | ||
111 | out: | |
c6c8fea2 SE |
112 | return neigh_node; |
113 | } | |
114 | ||
7b36e8ee | 115 | static void orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 116 | { |
9591a79f | 117 | struct hlist_node *node, *node_tmp; |
a4c135c5 | 118 | struct neigh_node *neigh_node, *tmp_neigh_node; |
16b1aba8 ML |
119 | struct orig_node *orig_node; |
120 | ||
7b36e8ee | 121 | orig_node = container_of(rcu, struct 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 | ||
7d211efc | 151 | void batadv_orig_node_free_ref(struct orig_node *orig_node) |
7b36e8ee ML |
152 | { |
153 | if (atomic_dec_and_test(&orig_node->refcount)) | |
154 | call_rcu(&orig_node->rcu, orig_node_free_rcu); | |
155 | } | |
156 | ||
7d211efc | 157 | void batadv_originator_free(struct bat_priv *bat_priv) |
c6c8fea2 | 158 | { |
16b1aba8 | 159 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 160 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 161 | struct hlist_head *head; |
16b1aba8 ML |
162 | spinlock_t *list_lock; /* spinlock to protect write access */ |
163 | struct 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 | |
191 | * address if it does not exits */ | |
7d211efc SE |
192 | struct orig_node *batadv_get_orig_node(struct bat_priv *bat_priv, |
193 | const uint8_t *addr) | |
c6c8fea2 SE |
194 | { |
195 | struct orig_node *orig_node; | |
196 | int size; | |
197 | int hash_added; | |
198 | ||
7aadf889 ML |
199 | orig_node = orig_hash_find(bat_priv, addr); |
200 | if (orig_node) | |
c6c8fea2 SE |
201 | return orig_node; |
202 | ||
203 | bat_dbg(DBG_BATMAN, bat_priv, | |
204 | "Creating new originator: %pM\n", addr); | |
205 | ||
704509b8 | 206 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
207 | if (!orig_node) |
208 | return NULL; | |
209 | ||
9591a79f | 210 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 211 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 212 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 213 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 214 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 215 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
216 | |
217 | /* extra reference for return */ | |
218 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 219 | |
17071578 | 220 | orig_node->tt_initialised = false; |
cc47f66e | 221 | orig_node->tt_poss_change = false; |
16b1aba8 | 222 | orig_node->bat_priv = bat_priv; |
c6c8fea2 SE |
223 | memcpy(orig_node->orig, addr, ETH_ALEN); |
224 | orig_node->router = NULL; | |
c8c991bf AQ |
225 | orig_node->tt_crc = 0; |
226 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 227 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
228 | orig_node->tt_buff_len = 0; |
229 | atomic_set(&orig_node->tt_size, 0); | |
c6c8fea2 SE |
230 | orig_node->bcast_seqno_reset = jiffies - 1 |
231 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
232 | orig_node->batman_seqno_reset = jiffies - 1 | |
233 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
234 | ||
a4c135c5 SW |
235 | atomic_set(&orig_node->bond_candidates, 0); |
236 | ||
c6c8fea2 SE |
237 | size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS; |
238 | ||
239 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
240 | if (!orig_node->bcast_own) | |
241 | goto free_orig_node; | |
242 | ||
243 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
244 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
245 | ||
246 | INIT_LIST_HEAD(&orig_node->frag_list); | |
247 | orig_node->last_frag_packet = 0; | |
248 | ||
249 | if (!orig_node->bcast_own_sum) | |
250 | goto free_bcast_own; | |
251 | ||
7aadf889 ML |
252 | hash_added = hash_add(bat_priv->orig_hash, compare_orig, |
253 | choose_orig, orig_node, &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; |
c6c8fea2 SE |
275 | |
276 | *best_neigh_node = NULL; | |
277 | ||
f987ed6e ML |
278 | spin_lock_bh(&orig_node->neigh_list_lock); |
279 | ||
c6c8fea2 | 280 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
281 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
282 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 283 | |
d7b2a97e | 284 | if ((has_timed_out(neigh_node->last_seen, PURGE_TIMEOUT)) || |
c6c8fea2 | 285 | (neigh_node->if_incoming->if_status == IF_INACTIVE) || |
1a241a57 | 286 | (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) || |
c6c8fea2 SE |
287 | (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { |
288 | ||
0b0094e0 ML |
289 | last_seen = neigh_node->last_seen; |
290 | ||
1a241a57 ML |
291 | if ((neigh_node->if_incoming->if_status == |
292 | IF_INACTIVE) || | |
293 | (neigh_node->if_incoming->if_status == | |
294 | IF_NOT_IN_USE) || | |
295 | (neigh_node->if_incoming->if_status == | |
296 | IF_TO_BE_REMOVED)) | |
c6c8fea2 | 297 | bat_dbg(DBG_BATMAN, bat_priv, |
86ceb360 | 298 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
c6c8fea2 SE |
299 | orig_node->orig, neigh_node->addr, |
300 | neigh_node->if_incoming->net_dev->name); | |
301 | else | |
302 | bat_dbg(DBG_BATMAN, bat_priv, | |
0b0094e0 | 303 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
c6c8fea2 | 304 | orig_node->orig, neigh_node->addr, |
0b0094e0 | 305 | jiffies_to_msecs(last_seen)); |
c6c8fea2 SE |
306 | |
307 | neigh_purged = true; | |
9591a79f | 308 | |
f987ed6e | 309 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 310 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 311 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
312 | } else { |
313 | if ((!*best_neigh_node) || | |
314 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
315 | *best_neigh_node = neigh_node; | |
316 | } | |
317 | } | |
f987ed6e ML |
318 | |
319 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
320 | return neigh_purged; |
321 | } | |
322 | ||
323 | static bool purge_orig_node(struct bat_priv *bat_priv, | |
324 | struct orig_node *orig_node) | |
325 | { | |
326 | struct neigh_node *best_neigh_node; | |
327 | ||
d7b2a97e | 328 | if (has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
c6c8fea2 | 329 | bat_dbg(DBG_BATMAN, bat_priv, |
0b0094e0 ML |
330 | "Originator timeout: originator %pM, last_seen %u\n", |
331 | orig_node->orig, | |
332 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
333 | return true; |
334 | } else { | |
335 | if (purge_orig_neighbors(bat_priv, orig_node, | |
7c64fd98 | 336 | &best_neigh_node)) |
30d3c511 SE |
337 | batadv_update_route(bat_priv, orig_node, |
338 | best_neigh_node); | |
c6c8fea2 SE |
339 | } |
340 | ||
341 | return false; | |
342 | } | |
343 | ||
344 | static void _purge_orig(struct bat_priv *bat_priv) | |
345 | { | |
346 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 347 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 348 | struct hlist_head *head; |
fb778ea1 | 349 | spinlock_t *list_lock; /* spinlock to protect write access */ |
c6c8fea2 | 350 | struct orig_node *orig_node; |
c90681b8 | 351 | uint32_t i; |
c6c8fea2 SE |
352 | |
353 | if (!hash) | |
354 | return; | |
355 | ||
c6c8fea2 SE |
356 | /* for all origins... */ |
357 | for (i = 0; i < hash->size; i++) { | |
358 | head = &hash->table[i]; | |
fb778ea1 | 359 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 360 | |
fb778ea1 | 361 | spin_lock_bh(list_lock); |
7aadf889 ML |
362 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
363 | head, hash_entry) { | |
c6c8fea2 SE |
364 | if (purge_orig_node(bat_priv, orig_node)) { |
365 | if (orig_node->gw_flags) | |
7cf06bc6 SE |
366 | batadv_gw_node_delete(bat_priv, |
367 | orig_node); | |
7aadf889 | 368 | hlist_del_rcu(node); |
7d211efc | 369 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 370 | continue; |
c6c8fea2 SE |
371 | } |
372 | ||
032b7969 ML |
373 | if (has_timed_out(orig_node->last_frag_packet, |
374 | FRAG_TIMEOUT)) | |
88ed1e77 | 375 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 376 | } |
fb778ea1 | 377 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
378 | } |
379 | ||
7cf06bc6 SE |
380 | batadv_gw_node_purge(bat_priv); |
381 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
382 | } |
383 | ||
384 | static void purge_orig(struct work_struct *work) | |
385 | { | |
386 | struct delayed_work *delayed_work = | |
387 | container_of(work, struct delayed_work, work); | |
388 | struct bat_priv *bat_priv = | |
389 | container_of(delayed_work, struct bat_priv, orig_work); | |
390 | ||
391 | _purge_orig(bat_priv); | |
392 | start_purge_timer(bat_priv); | |
393 | } | |
394 | ||
7d211efc | 395 | void batadv_purge_orig_ref(struct bat_priv *bat_priv) |
c6c8fea2 SE |
396 | { |
397 | _purge_orig(bat_priv); | |
398 | } | |
399 | ||
7d211efc | 400 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
401 | { |
402 | struct net_device *net_dev = (struct net_device *)seq->private; | |
403 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
404 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 405 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 406 | struct hlist_head *head; |
32ae9b22 | 407 | struct hard_iface *primary_if; |
c6c8fea2 | 408 | struct orig_node *orig_node; |
e1a5382f | 409 | struct neigh_node *neigh_node, *neigh_node_tmp; |
c6c8fea2 SE |
410 | int batman_count = 0; |
411 | int last_seen_secs; | |
412 | int last_seen_msecs; | |
c90681b8 AQ |
413 | uint32_t i; |
414 | int ret = 0; | |
32ae9b22 ML |
415 | |
416 | primary_if = primary_if_get_selected(bat_priv); | |
c6c8fea2 | 417 | |
32ae9b22 | 418 | if (!primary_if) { |
86ceb360 SE |
419 | ret = seq_printf(seq, |
420 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
421 | net_dev->name); |
422 | goto out; | |
423 | } | |
c6c8fea2 | 424 | |
32ae9b22 | 425 | if (primary_if->if_status != IF_ACTIVE) { |
86ceb360 SE |
426 | ret = seq_printf(seq, |
427 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
428 | net_dev->name); |
429 | goto out; | |
c6c8fea2 SE |
430 | } |
431 | ||
44c4349a SE |
432 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
433 | SOURCE_VERSION, primary_if->net_dev->name, | |
32ae9b22 | 434 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 SE |
435 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
436 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", | |
437 | "outgoingIF", "Potential nexthops"); | |
438 | ||
c6c8fea2 SE |
439 | for (i = 0; i < hash->size; i++) { |
440 | head = &hash->table[i]; | |
441 | ||
fb778ea1 | 442 | rcu_read_lock(); |
7aadf889 | 443 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
7d211efc | 444 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 445 | if (!neigh_node) |
c6c8fea2 SE |
446 | continue; |
447 | ||
e1a5382f LL |
448 | if (neigh_node->tq_avg == 0) |
449 | goto next; | |
c6c8fea2 SE |
450 | |
451 | last_seen_secs = jiffies_to_msecs(jiffies - | |
d7b2a97e | 452 | orig_node->last_seen) / 1000; |
c6c8fea2 | 453 | last_seen_msecs = jiffies_to_msecs(jiffies - |
d7b2a97e | 454 | orig_node->last_seen) % 1000; |
c6c8fea2 | 455 | |
c6c8fea2 SE |
456 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
457 | orig_node->orig, last_seen_secs, | |
458 | last_seen_msecs, neigh_node->tq_avg, | |
459 | neigh_node->addr, | |
460 | neigh_node->if_incoming->net_dev->name); | |
461 | ||
e1a5382f | 462 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 463 | &orig_node->neigh_list, list) { |
e1a5382f LL |
464 | seq_printf(seq, " %pM (%3i)", |
465 | neigh_node_tmp->addr, | |
466 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
467 | } |
468 | ||
469 | seq_printf(seq, "\n"); | |
470 | batman_count++; | |
e1a5382f LL |
471 | |
472 | next: | |
7d211efc | 473 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 474 | } |
fb778ea1 | 475 | rcu_read_unlock(); |
c6c8fea2 SE |
476 | } |
477 | ||
e1a5382f | 478 | if (batman_count == 0) |
c6c8fea2 SE |
479 | seq_printf(seq, "No batman nodes in range ...\n"); |
480 | ||
32ae9b22 ML |
481 | out: |
482 | if (primary_if) | |
483 | hardif_free_ref(primary_if); | |
484 | return ret; | |
c6c8fea2 SE |
485 | } |
486 | ||
487 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) | |
488 | { | |
489 | void *data_ptr; | |
490 | ||
491 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, | |
492 | GFP_ATOMIC); | |
320f422f | 493 | if (!data_ptr) |
5346c35e | 494 | return -ENOMEM; |
c6c8fea2 SE |
495 | |
496 | memcpy(data_ptr, orig_node->bcast_own, | |
497 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); | |
498 | kfree(orig_node->bcast_own); | |
499 | orig_node->bcast_own = data_ptr; | |
500 | ||
501 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 502 | if (!data_ptr) |
5346c35e | 503 | return -ENOMEM; |
c6c8fea2 SE |
504 | |
505 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
506 | (max_if_num - 1) * sizeof(uint8_t)); | |
507 | kfree(orig_node->bcast_own_sum); | |
508 | orig_node->bcast_own_sum = data_ptr; | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
7d211efc | 513 | int batadv_orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 514 | { |
e6c10f43 | 515 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 516 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 517 | struct hlist_node *node; |
c6c8fea2 | 518 | struct hlist_head *head; |
c6c8fea2 | 519 | struct orig_node *orig_node; |
c90681b8 AQ |
520 | uint32_t i; |
521 | int ret; | |
c6c8fea2 SE |
522 | |
523 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
524 | * if_num */ | |
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 | |
607 | * if_num */ | |
c6c8fea2 SE |
608 | for (i = 0; i < hash->size; i++) { |
609 | head = &hash->table[i]; | |
610 | ||
fb778ea1 | 611 | rcu_read_lock(); |
7aadf889 | 612 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 613 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 614 | ret = orig_node_del_if(orig_node, max_if_num, |
e6c10f43 | 615 | hard_iface->if_num); |
2ae2daf6 | 616 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 617 | |
5346c35e | 618 | if (ret == -ENOMEM) |
c6c8fea2 SE |
619 | goto err; |
620 | } | |
fb778ea1 | 621 | rcu_read_unlock(); |
c6c8fea2 SE |
622 | } |
623 | ||
624 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
625 | rcu_read_lock(); | |
e6c10f43 ML |
626 | list_for_each_entry_rcu(hard_iface_tmp, &hardif_list, list) { |
627 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) | |
c6c8fea2 SE |
628 | continue; |
629 | ||
e6c10f43 | 630 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
631 | continue; |
632 | ||
e6c10f43 | 633 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
634 | continue; |
635 | ||
e6c10f43 ML |
636 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
637 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
638 | } |
639 | rcu_read_unlock(); | |
640 | ||
e6c10f43 | 641 | hard_iface->if_num = -1; |
c6c8fea2 SE |
642 | return 0; |
643 | ||
644 | err: | |
fb778ea1 | 645 | rcu_read_unlock(); |
c6c8fea2 SE |
646 | return -ENOMEM; |
647 | } |