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 | ||
c6c8fea2 SE |
50 | int originator_init(struct bat_priv *bat_priv) |
51 | { | |
52 | if (bat_priv->orig_hash) | |
53 | return 1; | |
54 | ||
c6c8fea2 SE |
55 | bat_priv->orig_hash = hash_new(1024); |
56 | ||
57 | if (!bat_priv->orig_hash) | |
58 | goto err; | |
59 | ||
c6c8fea2 SE |
60 | start_purge_timer(bat_priv); |
61 | return 1; | |
62 | ||
63 | err: | |
c6c8fea2 SE |
64 | return 0; |
65 | } | |
66 | ||
44524fcd | 67 | void 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 LL |
73 | /* increases the refcounter of a found router */ |
74 | struct neigh_node *orig_node_get_router(struct orig_node *orig_node) | |
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); | |
44524fcd | 129 | 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); |
44524fcd | 136 | neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
137 | } |
138 | ||
f987ed6e ML |
139 | spin_unlock_bh(&orig_node->neigh_list_lock); |
140 | ||
c6c8fea2 | 141 | frag_list_free(&orig_node->frag_list); |
2dafb49d | 142 | tt_global_del_orig(orig_node->bat_priv, orig_node, |
7c64fd98 | 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 | ||
7b36e8ee ML |
151 | void orig_node_free_ref(struct orig_node *orig_node) |
152 | { | |
153 | if (atomic_dec_and_test(&orig_node->refcount)) | |
154 | call_rcu(&orig_node->rcu, orig_node_free_rcu); | |
155 | } | |
156 | ||
c6c8fea2 SE |
157 | void originator_free(struct bat_priv *bat_priv) |
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); |
7b36e8ee | 182 | orig_node_free_ref(orig_node); |
16b1aba8 ML |
183 | } |
184 | spin_unlock_bh(list_lock); | |
185 | } | |
186 | ||
187 | 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 */ | |
747e4221 | 192 | struct orig_node *get_orig_node(struct bat_priv *bat_priv, const uint8_t *addr) |
c6c8fea2 SE |
193 | { |
194 | struct orig_node *orig_node; | |
195 | int size; | |
196 | int hash_added; | |
197 | ||
7aadf889 ML |
198 | orig_node = orig_hash_find(bat_priv, addr); |
199 | if (orig_node) | |
c6c8fea2 SE |
200 | return orig_node; |
201 | ||
202 | bat_dbg(DBG_BATMAN, bat_priv, | |
203 | "Creating new originator: %pM\n", addr); | |
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 | ||
7aadf889 ML |
251 | hash_added = hash_add(bat_priv->orig_hash, compare_orig, |
252 | choose_orig, orig_node, &orig_node->hash_entry); | |
1a1f37d9 | 253 | if (hash_added != 0) |
c6c8fea2 SE |
254 | goto free_bcast_own_sum; |
255 | ||
256 | return orig_node; | |
257 | free_bcast_own_sum: | |
258 | kfree(orig_node->bcast_own_sum); | |
259 | free_bcast_own: | |
260 | kfree(orig_node->bcast_own); | |
261 | free_orig_node: | |
262 | kfree(orig_node); | |
263 | return NULL; | |
264 | } | |
265 | ||
266 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, | |
267 | struct orig_node *orig_node, | |
268 | struct neigh_node **best_neigh_node) | |
269 | { | |
9591a79f | 270 | struct hlist_node *node, *node_tmp; |
c6c8fea2 SE |
271 | struct neigh_node *neigh_node; |
272 | bool neigh_purged = false; | |
0b0094e0 | 273 | unsigned long last_seen; |
c6c8fea2 SE |
274 | |
275 | *best_neigh_node = NULL; | |
276 | ||
f987ed6e ML |
277 | spin_lock_bh(&orig_node->neigh_list_lock); |
278 | ||
c6c8fea2 | 279 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
280 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
281 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 282 | |
d7b2a97e | 283 | if ((has_timed_out(neigh_node->last_seen, PURGE_TIMEOUT)) || |
c6c8fea2 | 284 | (neigh_node->if_incoming->if_status == IF_INACTIVE) || |
1a241a57 | 285 | (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) || |
c6c8fea2 SE |
286 | (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { |
287 | ||
0b0094e0 ML |
288 | last_seen = neigh_node->last_seen; |
289 | ||
1a241a57 ML |
290 | if ((neigh_node->if_incoming->if_status == |
291 | IF_INACTIVE) || | |
292 | (neigh_node->if_incoming->if_status == | |
293 | IF_NOT_IN_USE) || | |
294 | (neigh_node->if_incoming->if_status == | |
295 | IF_TO_BE_REMOVED)) | |
c6c8fea2 | 296 | bat_dbg(DBG_BATMAN, bat_priv, |
86ceb360 | 297 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
c6c8fea2 SE |
298 | orig_node->orig, neigh_node->addr, |
299 | neigh_node->if_incoming->net_dev->name); | |
300 | else | |
301 | bat_dbg(DBG_BATMAN, bat_priv, | |
0b0094e0 | 302 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
c6c8fea2 | 303 | orig_node->orig, neigh_node->addr, |
0b0094e0 | 304 | jiffies_to_msecs(last_seen)); |
c6c8fea2 SE |
305 | |
306 | neigh_purged = true; | |
9591a79f | 307 | |
f987ed6e | 308 | hlist_del_rcu(&neigh_node->list); |
a4c135c5 | 309 | bonding_candidate_del(orig_node, neigh_node); |
44524fcd | 310 | 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 | ||
d7b2a97e | 327 | if (has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
c6c8fea2 | 328 | bat_dbg(DBG_BATMAN, bat_priv, |
0b0094e0 ML |
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)) |
fc957275 | 336 | update_route(bat_priv, orig_node, best_neigh_node); |
c6c8fea2 SE |
337 | } |
338 | ||
339 | return false; | |
340 | } | |
341 | ||
342 | static void _purge_orig(struct bat_priv *bat_priv) | |
343 | { | |
344 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 345 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 346 | struct hlist_head *head; |
fb778ea1 | 347 | spinlock_t *list_lock; /* spinlock to protect write access */ |
c6c8fea2 | 348 | struct orig_node *orig_node; |
c90681b8 | 349 | uint32_t i; |
c6c8fea2 SE |
350 | |
351 | if (!hash) | |
352 | return; | |
353 | ||
c6c8fea2 SE |
354 | /* for all origins... */ |
355 | for (i = 0; i < hash->size; i++) { | |
356 | head = &hash->table[i]; | |
fb778ea1 | 357 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 358 | |
fb778ea1 | 359 | spin_lock_bh(list_lock); |
7aadf889 ML |
360 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
361 | head, hash_entry) { | |
c6c8fea2 SE |
362 | if (purge_orig_node(bat_priv, orig_node)) { |
363 | if (orig_node->gw_flags) | |
364 | gw_node_delete(bat_priv, orig_node); | |
7aadf889 | 365 | hlist_del_rcu(node); |
7b36e8ee | 366 | orig_node_free_ref(orig_node); |
fb778ea1 | 367 | continue; |
c6c8fea2 SE |
368 | } |
369 | ||
032b7969 ML |
370 | if (has_timed_out(orig_node->last_frag_packet, |
371 | FRAG_TIMEOUT)) | |
c6c8fea2 SE |
372 | frag_list_free(&orig_node->frag_list); |
373 | } | |
fb778ea1 | 374 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
375 | } |
376 | ||
c6c8fea2 SE |
377 | gw_node_purge(bat_priv); |
378 | gw_election(bat_priv); | |
c6c8fea2 SE |
379 | } |
380 | ||
381 | static void purge_orig(struct work_struct *work) | |
382 | { | |
383 | struct delayed_work *delayed_work = | |
384 | container_of(work, struct delayed_work, work); | |
385 | struct bat_priv *bat_priv = | |
386 | container_of(delayed_work, struct bat_priv, orig_work); | |
387 | ||
388 | _purge_orig(bat_priv); | |
389 | start_purge_timer(bat_priv); | |
390 | } | |
391 | ||
392 | void purge_orig_ref(struct bat_priv *bat_priv) | |
393 | { | |
394 | _purge_orig(bat_priv); | |
395 | } | |
396 | ||
397 | int orig_seq_print_text(struct seq_file *seq, void *offset) | |
398 | { | |
399 | struct net_device *net_dev = (struct net_device *)seq->private; | |
400 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
401 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 402 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 403 | struct hlist_head *head; |
32ae9b22 | 404 | struct hard_iface *primary_if; |
c6c8fea2 | 405 | struct orig_node *orig_node; |
e1a5382f | 406 | struct neigh_node *neigh_node, *neigh_node_tmp; |
c6c8fea2 SE |
407 | int batman_count = 0; |
408 | int last_seen_secs; | |
409 | int last_seen_msecs; | |
c90681b8 AQ |
410 | uint32_t i; |
411 | int ret = 0; | |
32ae9b22 ML |
412 | |
413 | primary_if = primary_if_get_selected(bat_priv); | |
c6c8fea2 | 414 | |
32ae9b22 | 415 | if (!primary_if) { |
86ceb360 SE |
416 | ret = seq_printf(seq, |
417 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
418 | net_dev->name); |
419 | goto out; | |
420 | } | |
c6c8fea2 | 421 | |
32ae9b22 | 422 | if (primary_if->if_status != IF_ACTIVE) { |
86ceb360 SE |
423 | ret = seq_printf(seq, |
424 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
425 | net_dev->name); |
426 | goto out; | |
c6c8fea2 SE |
427 | } |
428 | ||
44c4349a SE |
429 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
430 | SOURCE_VERSION, primary_if->net_dev->name, | |
32ae9b22 | 431 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 SE |
432 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
433 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", | |
434 | "outgoingIF", "Potential nexthops"); | |
435 | ||
c6c8fea2 SE |
436 | for (i = 0; i < hash->size; i++) { |
437 | head = &hash->table[i]; | |
438 | ||
fb778ea1 | 439 | rcu_read_lock(); |
7aadf889 | 440 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
e1a5382f LL |
441 | neigh_node = orig_node_get_router(orig_node); |
442 | if (!neigh_node) | |
c6c8fea2 SE |
443 | continue; |
444 | ||
e1a5382f LL |
445 | if (neigh_node->tq_avg == 0) |
446 | goto next; | |
c6c8fea2 SE |
447 | |
448 | last_seen_secs = jiffies_to_msecs(jiffies - | |
d7b2a97e | 449 | orig_node->last_seen) / 1000; |
c6c8fea2 | 450 | last_seen_msecs = jiffies_to_msecs(jiffies - |
d7b2a97e | 451 | orig_node->last_seen) % 1000; |
c6c8fea2 | 452 | |
c6c8fea2 SE |
453 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
454 | orig_node->orig, last_seen_secs, | |
455 | last_seen_msecs, neigh_node->tq_avg, | |
456 | neigh_node->addr, | |
457 | neigh_node->if_incoming->net_dev->name); | |
458 | ||
e1a5382f | 459 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 460 | &orig_node->neigh_list, list) { |
e1a5382f LL |
461 | seq_printf(seq, " %pM (%3i)", |
462 | neigh_node_tmp->addr, | |
463 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
464 | } |
465 | ||
466 | seq_printf(seq, "\n"); | |
467 | batman_count++; | |
e1a5382f LL |
468 | |
469 | next: | |
470 | neigh_node_free_ref(neigh_node); | |
c6c8fea2 | 471 | } |
fb778ea1 | 472 | rcu_read_unlock(); |
c6c8fea2 SE |
473 | } |
474 | ||
e1a5382f | 475 | if (batman_count == 0) |
c6c8fea2 SE |
476 | seq_printf(seq, "No batman nodes in range ...\n"); |
477 | ||
32ae9b22 ML |
478 | out: |
479 | if (primary_if) | |
480 | hardif_free_ref(primary_if); | |
481 | return ret; | |
c6c8fea2 SE |
482 | } |
483 | ||
484 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) | |
485 | { | |
486 | void *data_ptr; | |
487 | ||
488 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, | |
489 | GFP_ATOMIC); | |
320f422f | 490 | if (!data_ptr) |
c6c8fea2 | 491 | return -1; |
c6c8fea2 SE |
492 | |
493 | memcpy(data_ptr, orig_node->bcast_own, | |
494 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); | |
495 | kfree(orig_node->bcast_own); | |
496 | orig_node->bcast_own = data_ptr; | |
497 | ||
498 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 499 | if (!data_ptr) |
c6c8fea2 | 500 | return -1; |
c6c8fea2 SE |
501 | |
502 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
503 | (max_if_num - 1) * sizeof(uint8_t)); | |
504 | kfree(orig_node->bcast_own_sum); | |
505 | orig_node->bcast_own_sum = data_ptr; | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
e6c10f43 | 510 | int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 511 | { |
e6c10f43 | 512 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 513 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 514 | struct hlist_node *node; |
c6c8fea2 | 515 | struct hlist_head *head; |
c6c8fea2 | 516 | struct orig_node *orig_node; |
c90681b8 AQ |
517 | uint32_t i; |
518 | int ret; | |
c6c8fea2 SE |
519 | |
520 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
521 | * if_num */ | |
c6c8fea2 SE |
522 | for (i = 0; i < hash->size; i++) { |
523 | head = &hash->table[i]; | |
524 | ||
fb778ea1 | 525 | rcu_read_lock(); |
7aadf889 | 526 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 ML |
527 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
528 | ret = orig_node_add_if(orig_node, max_if_num); | |
529 | spin_unlock_bh(&orig_node->ogm_cnt_lock); | |
530 | ||
531 | if (ret == -1) | |
c6c8fea2 SE |
532 | goto err; |
533 | } | |
fb778ea1 | 534 | rcu_read_unlock(); |
c6c8fea2 SE |
535 | } |
536 | ||
c6c8fea2 SE |
537 | return 0; |
538 | ||
539 | err: | |
fb778ea1 | 540 | rcu_read_unlock(); |
c6c8fea2 SE |
541 | return -ENOMEM; |
542 | } | |
543 | ||
544 | static int orig_node_del_if(struct orig_node *orig_node, | |
545 | int max_if_num, int del_if_num) | |
546 | { | |
547 | void *data_ptr = NULL; | |
548 | int chunk_size; | |
549 | ||
550 | /* last interface was removed */ | |
551 | if (max_if_num == 0) | |
552 | goto free_bcast_own; | |
553 | ||
554 | chunk_size = sizeof(unsigned long) * NUM_WORDS; | |
555 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); | |
320f422f | 556 | if (!data_ptr) |
c6c8fea2 | 557 | return -1; |
c6c8fea2 SE |
558 | |
559 | /* copy first part */ | |
560 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
561 | ||
562 | /* copy second part */ | |
38e3c5f0 | 563 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
564 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
565 | (max_if_num - del_if_num) * chunk_size); | |
566 | ||
567 | free_bcast_own: | |
568 | kfree(orig_node->bcast_own); | |
569 | orig_node->bcast_own = data_ptr; | |
570 | ||
571 | if (max_if_num == 0) | |
572 | goto free_own_sum; | |
573 | ||
574 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 575 | if (!data_ptr) |
c6c8fea2 | 576 | return -1; |
c6c8fea2 SE |
577 | |
578 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
579 | del_if_num * sizeof(uint8_t)); | |
580 | ||
38e3c5f0 | 581 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
582 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
583 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
584 | ||
585 | free_own_sum: | |
586 | kfree(orig_node->bcast_own_sum); | |
587 | orig_node->bcast_own_sum = data_ptr; | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
e6c10f43 | 592 | int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 593 | { |
e6c10f43 | 594 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 595 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 596 | struct hlist_node *node; |
c6c8fea2 | 597 | struct hlist_head *head; |
e6c10f43 | 598 | struct hard_iface *hard_iface_tmp; |
c6c8fea2 | 599 | struct 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 | |
604 | * if_num */ | |
c6c8fea2 SE |
605 | for (i = 0; i < hash->size; i++) { |
606 | head = &hash->table[i]; | |
607 | ||
fb778ea1 | 608 | rcu_read_lock(); |
7aadf889 | 609 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 610 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 611 | ret = orig_node_del_if(orig_node, max_if_num, |
e6c10f43 | 612 | hard_iface->if_num); |
2ae2daf6 | 613 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 SE |
614 | |
615 | if (ret == -1) | |
616 | goto err; | |
617 | } | |
fb778ea1 | 618 | rcu_read_unlock(); |
c6c8fea2 SE |
619 | } |
620 | ||
621 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
622 | rcu_read_lock(); | |
e6c10f43 ML |
623 | list_for_each_entry_rcu(hard_iface_tmp, &hardif_list, list) { |
624 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) | |
c6c8fea2 SE |
625 | continue; |
626 | ||
e6c10f43 | 627 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
628 | continue; |
629 | ||
e6c10f43 | 630 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
631 | continue; |
632 | ||
e6c10f43 ML |
633 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
634 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
635 | } |
636 | rcu_read_unlock(); | |
637 | ||
e6c10f43 | 638 | hard_iface->if_num = -1; |
c6c8fea2 SE |
639 | return 0; |
640 | ||
641 | err: | |
fb778ea1 | 642 | rcu_read_unlock(); |
c6c8fea2 SE |
643 | return -ENOMEM; |
644 | } |