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); |
1605d0d6 ML |
102 | |
103 | /* extra reference for return */ | |
104 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 105 | |
7ae8b285 ML |
106 | bat_dbg(DBG_BATMAN, bat_priv, |
107 | "Creating new neighbor %pM, initial seqno %d\n", | |
108 | neigh_addr, seqno); | |
109 | ||
110 | out: | |
c6c8fea2 SE |
111 | return neigh_node; |
112 | } | |
113 | ||
7b36e8ee | 114 | static void orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 115 | { |
9591a79f | 116 | struct hlist_node *node, *node_tmp; |
a4c135c5 | 117 | struct neigh_node *neigh_node, *tmp_neigh_node; |
16b1aba8 ML |
118 | struct orig_node *orig_node; |
119 | ||
7b36e8ee | 120 | orig_node = container_of(rcu, struct orig_node, rcu); |
c6c8fea2 | 121 | |
f987ed6e ML |
122 | spin_lock_bh(&orig_node->neigh_list_lock); |
123 | ||
a4c135c5 SW |
124 | /* for all bonding members ... */ |
125 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
126 | &orig_node->bond_list, bonding_list) { | |
127 | list_del_rcu(&neigh_node->bonding_list); | |
44524fcd | 128 | neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
129 | } |
130 | ||
c6c8fea2 | 131 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
132 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
133 | &orig_node->neigh_list, list) { | |
f987ed6e | 134 | hlist_del_rcu(&neigh_node->list); |
44524fcd | 135 | neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
136 | } |
137 | ||
f987ed6e ML |
138 | spin_unlock_bh(&orig_node->neigh_list_lock); |
139 | ||
c6c8fea2 | 140 | frag_list_free(&orig_node->frag_list); |
2dafb49d | 141 | tt_global_del_orig(orig_node->bat_priv, orig_node, |
7c64fd98 | 142 | "originator timed out"); |
c6c8fea2 | 143 | |
a73105b8 | 144 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
145 | kfree(orig_node->bcast_own); |
146 | kfree(orig_node->bcast_own_sum); | |
147 | kfree(orig_node); | |
148 | } | |
149 | ||
7b36e8ee ML |
150 | void orig_node_free_ref(struct orig_node *orig_node) |
151 | { | |
152 | if (atomic_dec_and_test(&orig_node->refcount)) | |
153 | call_rcu(&orig_node->rcu, orig_node_free_rcu); | |
154 | } | |
155 | ||
c6c8fea2 SE |
156 | void originator_free(struct bat_priv *bat_priv) |
157 | { | |
16b1aba8 | 158 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 159 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 160 | struct hlist_head *head; |
16b1aba8 ML |
161 | spinlock_t *list_lock; /* spinlock to protect write access */ |
162 | struct orig_node *orig_node; | |
c90681b8 | 163 | uint32_t i; |
16b1aba8 ML |
164 | |
165 | if (!hash) | |
c6c8fea2 SE |
166 | return; |
167 | ||
168 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
169 | ||
c6c8fea2 | 170 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
171 | |
172 | for (i = 0; i < hash->size; i++) { | |
173 | head = &hash->table[i]; | |
174 | list_lock = &hash->list_locks[i]; | |
175 | ||
176 | spin_lock_bh(list_lock); | |
7aadf889 ML |
177 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
178 | head, hash_entry) { | |
16b1aba8 | 179 | |
7aadf889 | 180 | hlist_del_rcu(node); |
7b36e8ee | 181 | orig_node_free_ref(orig_node); |
16b1aba8 ML |
182 | } |
183 | spin_unlock_bh(list_lock); | |
184 | } | |
185 | ||
186 | hash_destroy(hash); | |
c6c8fea2 SE |
187 | } |
188 | ||
189 | /* this function finds or creates an originator entry for the given | |
190 | * address if it does not exits */ | |
747e4221 | 191 | struct orig_node *get_orig_node(struct bat_priv *bat_priv, const uint8_t *addr) |
c6c8fea2 SE |
192 | { |
193 | struct orig_node *orig_node; | |
194 | int size; | |
195 | int hash_added; | |
196 | ||
7aadf889 ML |
197 | orig_node = orig_hash_find(bat_priv, addr); |
198 | if (orig_node) | |
c6c8fea2 SE |
199 | return orig_node; |
200 | ||
201 | bat_dbg(DBG_BATMAN, bat_priv, | |
202 | "Creating new originator: %pM\n", addr); | |
203 | ||
704509b8 | 204 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
205 | if (!orig_node) |
206 | return NULL; | |
207 | ||
9591a79f | 208 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 209 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 210 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 211 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 212 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 213 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
214 | |
215 | /* extra reference for return */ | |
216 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 217 | |
17071578 | 218 | orig_node->tt_initialised = false; |
cc47f66e | 219 | orig_node->tt_poss_change = false; |
16b1aba8 | 220 | orig_node->bat_priv = bat_priv; |
c6c8fea2 SE |
221 | memcpy(orig_node->orig, addr, ETH_ALEN); |
222 | orig_node->router = NULL; | |
c8c991bf AQ |
223 | orig_node->tt_crc = 0; |
224 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 225 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
226 | orig_node->tt_buff_len = 0; |
227 | atomic_set(&orig_node->tt_size, 0); | |
c6c8fea2 SE |
228 | orig_node->bcast_seqno_reset = jiffies - 1 |
229 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
230 | orig_node->batman_seqno_reset = jiffies - 1 | |
231 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
232 | ||
a4c135c5 SW |
233 | atomic_set(&orig_node->bond_candidates, 0); |
234 | ||
c6c8fea2 SE |
235 | size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS; |
236 | ||
237 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
238 | if (!orig_node->bcast_own) | |
239 | goto free_orig_node; | |
240 | ||
241 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
242 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
243 | ||
244 | INIT_LIST_HEAD(&orig_node->frag_list); | |
245 | orig_node->last_frag_packet = 0; | |
246 | ||
247 | if (!orig_node->bcast_own_sum) | |
248 | goto free_bcast_own; | |
249 | ||
7aadf889 ML |
250 | hash_added = hash_add(bat_priv->orig_hash, compare_orig, |
251 | choose_orig, orig_node, &orig_node->hash_entry); | |
1a1f37d9 | 252 | if (hash_added != 0) |
c6c8fea2 SE |
253 | goto free_bcast_own_sum; |
254 | ||
255 | return orig_node; | |
256 | free_bcast_own_sum: | |
257 | kfree(orig_node->bcast_own_sum); | |
258 | free_bcast_own: | |
259 | kfree(orig_node->bcast_own); | |
260 | free_orig_node: | |
261 | kfree(orig_node); | |
262 | return NULL; | |
263 | } | |
264 | ||
265 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, | |
266 | struct orig_node *orig_node, | |
267 | struct neigh_node **best_neigh_node) | |
268 | { | |
9591a79f | 269 | struct hlist_node *node, *node_tmp; |
c6c8fea2 SE |
270 | struct neigh_node *neigh_node; |
271 | bool neigh_purged = false; | |
0b0094e0 | 272 | unsigned long last_seen; |
c6c8fea2 SE |
273 | |
274 | *best_neigh_node = NULL; | |
275 | ||
f987ed6e ML |
276 | spin_lock_bh(&orig_node->neigh_list_lock); |
277 | ||
c6c8fea2 | 278 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
279 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
280 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 281 | |
d7b2a97e | 282 | if ((has_timed_out(neigh_node->last_seen, PURGE_TIMEOUT)) || |
c6c8fea2 | 283 | (neigh_node->if_incoming->if_status == IF_INACTIVE) || |
1a241a57 | 284 | (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) || |
c6c8fea2 SE |
285 | (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { |
286 | ||
0b0094e0 ML |
287 | last_seen = neigh_node->last_seen; |
288 | ||
1a241a57 ML |
289 | if ((neigh_node->if_incoming->if_status == |
290 | IF_INACTIVE) || | |
291 | (neigh_node->if_incoming->if_status == | |
292 | IF_NOT_IN_USE) || | |
293 | (neigh_node->if_incoming->if_status == | |
294 | IF_TO_BE_REMOVED)) | |
c6c8fea2 | 295 | bat_dbg(DBG_BATMAN, bat_priv, |
86ceb360 | 296 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
c6c8fea2 SE |
297 | orig_node->orig, neigh_node->addr, |
298 | neigh_node->if_incoming->net_dev->name); | |
299 | else | |
300 | bat_dbg(DBG_BATMAN, bat_priv, | |
0b0094e0 | 301 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
c6c8fea2 | 302 | orig_node->orig, neigh_node->addr, |
0b0094e0 | 303 | jiffies_to_msecs(last_seen)); |
c6c8fea2 SE |
304 | |
305 | neigh_purged = true; | |
9591a79f | 306 | |
f987ed6e | 307 | hlist_del_rcu(&neigh_node->list); |
a4c135c5 | 308 | bonding_candidate_del(orig_node, neigh_node); |
44524fcd | 309 | neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
310 | } else { |
311 | if ((!*best_neigh_node) || | |
312 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
313 | *best_neigh_node = neigh_node; | |
314 | } | |
315 | } | |
f987ed6e ML |
316 | |
317 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
318 | return neigh_purged; |
319 | } | |
320 | ||
321 | static bool purge_orig_node(struct bat_priv *bat_priv, | |
322 | struct orig_node *orig_node) | |
323 | { | |
324 | struct neigh_node *best_neigh_node; | |
325 | ||
d7b2a97e | 326 | if (has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
c6c8fea2 | 327 | bat_dbg(DBG_BATMAN, bat_priv, |
0b0094e0 ML |
328 | "Originator timeout: originator %pM, last_seen %u\n", |
329 | orig_node->orig, | |
330 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
331 | return true; |
332 | } else { | |
333 | if (purge_orig_neighbors(bat_priv, orig_node, | |
7c64fd98 | 334 | &best_neigh_node)) |
fc957275 | 335 | update_route(bat_priv, orig_node, best_neigh_node); |
c6c8fea2 SE |
336 | } |
337 | ||
338 | return false; | |
339 | } | |
340 | ||
341 | static void _purge_orig(struct bat_priv *bat_priv) | |
342 | { | |
343 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 344 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 345 | struct hlist_head *head; |
fb778ea1 | 346 | spinlock_t *list_lock; /* spinlock to protect write access */ |
c6c8fea2 | 347 | struct orig_node *orig_node; |
c90681b8 | 348 | uint32_t i; |
c6c8fea2 SE |
349 | |
350 | if (!hash) | |
351 | return; | |
352 | ||
c6c8fea2 SE |
353 | /* for all origins... */ |
354 | for (i = 0; i < hash->size; i++) { | |
355 | head = &hash->table[i]; | |
fb778ea1 | 356 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 357 | |
fb778ea1 | 358 | spin_lock_bh(list_lock); |
7aadf889 ML |
359 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
360 | head, hash_entry) { | |
c6c8fea2 SE |
361 | if (purge_orig_node(bat_priv, orig_node)) { |
362 | if (orig_node->gw_flags) | |
363 | gw_node_delete(bat_priv, orig_node); | |
7aadf889 | 364 | hlist_del_rcu(node); |
7b36e8ee | 365 | orig_node_free_ref(orig_node); |
fb778ea1 | 366 | continue; |
c6c8fea2 SE |
367 | } |
368 | ||
032b7969 ML |
369 | if (has_timed_out(orig_node->last_frag_packet, |
370 | FRAG_TIMEOUT)) | |
c6c8fea2 SE |
371 | frag_list_free(&orig_node->frag_list); |
372 | } | |
fb778ea1 | 373 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
374 | } |
375 | ||
c6c8fea2 SE |
376 | gw_node_purge(bat_priv); |
377 | gw_election(bat_priv); | |
c6c8fea2 SE |
378 | } |
379 | ||
380 | static void purge_orig(struct work_struct *work) | |
381 | { | |
382 | struct delayed_work *delayed_work = | |
383 | container_of(work, struct delayed_work, work); | |
384 | struct bat_priv *bat_priv = | |
385 | container_of(delayed_work, struct bat_priv, orig_work); | |
386 | ||
387 | _purge_orig(bat_priv); | |
388 | start_purge_timer(bat_priv); | |
389 | } | |
390 | ||
391 | void purge_orig_ref(struct bat_priv *bat_priv) | |
392 | { | |
393 | _purge_orig(bat_priv); | |
394 | } | |
395 | ||
396 | int orig_seq_print_text(struct seq_file *seq, void *offset) | |
397 | { | |
398 | struct net_device *net_dev = (struct net_device *)seq->private; | |
399 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
400 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 401 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 402 | struct hlist_head *head; |
32ae9b22 | 403 | struct hard_iface *primary_if; |
c6c8fea2 | 404 | struct orig_node *orig_node; |
e1a5382f | 405 | struct neigh_node *neigh_node, *neigh_node_tmp; |
c6c8fea2 SE |
406 | int batman_count = 0; |
407 | int last_seen_secs; | |
408 | int last_seen_msecs; | |
c90681b8 AQ |
409 | uint32_t i; |
410 | int ret = 0; | |
32ae9b22 ML |
411 | |
412 | primary_if = primary_if_get_selected(bat_priv); | |
c6c8fea2 | 413 | |
32ae9b22 | 414 | if (!primary_if) { |
86ceb360 SE |
415 | ret = seq_printf(seq, |
416 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
417 | net_dev->name); |
418 | goto out; | |
419 | } | |
c6c8fea2 | 420 | |
32ae9b22 | 421 | if (primary_if->if_status != IF_ACTIVE) { |
86ceb360 SE |
422 | ret = seq_printf(seq, |
423 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
424 | net_dev->name); |
425 | goto out; | |
c6c8fea2 SE |
426 | } |
427 | ||
44c4349a SE |
428 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
429 | SOURCE_VERSION, primary_if->net_dev->name, | |
32ae9b22 | 430 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 SE |
431 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
432 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", | |
433 | "outgoingIF", "Potential nexthops"); | |
434 | ||
c6c8fea2 SE |
435 | for (i = 0; i < hash->size; i++) { |
436 | head = &hash->table[i]; | |
437 | ||
fb778ea1 | 438 | rcu_read_lock(); |
7aadf889 | 439 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
e1a5382f LL |
440 | neigh_node = orig_node_get_router(orig_node); |
441 | if (!neigh_node) | |
c6c8fea2 SE |
442 | continue; |
443 | ||
e1a5382f LL |
444 | if (neigh_node->tq_avg == 0) |
445 | goto next; | |
c6c8fea2 SE |
446 | |
447 | last_seen_secs = jiffies_to_msecs(jiffies - | |
d7b2a97e | 448 | orig_node->last_seen) / 1000; |
c6c8fea2 | 449 | last_seen_msecs = jiffies_to_msecs(jiffies - |
d7b2a97e | 450 | orig_node->last_seen) % 1000; |
c6c8fea2 | 451 | |
c6c8fea2 SE |
452 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
453 | orig_node->orig, last_seen_secs, | |
454 | last_seen_msecs, neigh_node->tq_avg, | |
455 | neigh_node->addr, | |
456 | neigh_node->if_incoming->net_dev->name); | |
457 | ||
e1a5382f | 458 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 459 | &orig_node->neigh_list, list) { |
e1a5382f LL |
460 | seq_printf(seq, " %pM (%3i)", |
461 | neigh_node_tmp->addr, | |
462 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
463 | } |
464 | ||
465 | seq_printf(seq, "\n"); | |
466 | batman_count++; | |
e1a5382f LL |
467 | |
468 | next: | |
469 | neigh_node_free_ref(neigh_node); | |
c6c8fea2 | 470 | } |
fb778ea1 | 471 | rcu_read_unlock(); |
c6c8fea2 SE |
472 | } |
473 | ||
e1a5382f | 474 | if (batman_count == 0) |
c6c8fea2 SE |
475 | seq_printf(seq, "No batman nodes in range ...\n"); |
476 | ||
32ae9b22 ML |
477 | out: |
478 | if (primary_if) | |
479 | hardif_free_ref(primary_if); | |
480 | return ret; | |
c6c8fea2 SE |
481 | } |
482 | ||
483 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) | |
484 | { | |
485 | void *data_ptr; | |
486 | ||
487 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, | |
488 | GFP_ATOMIC); | |
320f422f | 489 | if (!data_ptr) |
c6c8fea2 | 490 | return -1; |
c6c8fea2 SE |
491 | |
492 | memcpy(data_ptr, orig_node->bcast_own, | |
493 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); | |
494 | kfree(orig_node->bcast_own); | |
495 | orig_node->bcast_own = data_ptr; | |
496 | ||
497 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 498 | if (!data_ptr) |
c6c8fea2 | 499 | return -1; |
c6c8fea2 SE |
500 | |
501 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
502 | (max_if_num - 1) * sizeof(uint8_t)); | |
503 | kfree(orig_node->bcast_own_sum); | |
504 | orig_node->bcast_own_sum = data_ptr; | |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
e6c10f43 | 509 | int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 510 | { |
e6c10f43 | 511 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 512 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 513 | struct hlist_node *node; |
c6c8fea2 | 514 | struct hlist_head *head; |
c6c8fea2 | 515 | struct orig_node *orig_node; |
c90681b8 AQ |
516 | uint32_t i; |
517 | int ret; | |
c6c8fea2 SE |
518 | |
519 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
520 | * if_num */ | |
c6c8fea2 SE |
521 | for (i = 0; i < hash->size; i++) { |
522 | head = &hash->table[i]; | |
523 | ||
fb778ea1 | 524 | rcu_read_lock(); |
7aadf889 | 525 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 ML |
526 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
527 | ret = orig_node_add_if(orig_node, max_if_num); | |
528 | spin_unlock_bh(&orig_node->ogm_cnt_lock); | |
529 | ||
530 | if (ret == -1) | |
c6c8fea2 SE |
531 | goto err; |
532 | } | |
fb778ea1 | 533 | rcu_read_unlock(); |
c6c8fea2 SE |
534 | } |
535 | ||
c6c8fea2 SE |
536 | return 0; |
537 | ||
538 | err: | |
fb778ea1 | 539 | rcu_read_unlock(); |
c6c8fea2 SE |
540 | return -ENOMEM; |
541 | } | |
542 | ||
543 | static int orig_node_del_if(struct orig_node *orig_node, | |
544 | int max_if_num, int del_if_num) | |
545 | { | |
546 | void *data_ptr = NULL; | |
547 | int chunk_size; | |
548 | ||
549 | /* last interface was removed */ | |
550 | if (max_if_num == 0) | |
551 | goto free_bcast_own; | |
552 | ||
553 | chunk_size = sizeof(unsigned long) * NUM_WORDS; | |
554 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); | |
320f422f | 555 | if (!data_ptr) |
c6c8fea2 | 556 | return -1; |
c6c8fea2 SE |
557 | |
558 | /* copy first part */ | |
559 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
560 | ||
561 | /* copy second part */ | |
38e3c5f0 | 562 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
563 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
564 | (max_if_num - del_if_num) * chunk_size); | |
565 | ||
566 | free_bcast_own: | |
567 | kfree(orig_node->bcast_own); | |
568 | orig_node->bcast_own = data_ptr; | |
569 | ||
570 | if (max_if_num == 0) | |
571 | goto free_own_sum; | |
572 | ||
573 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 574 | if (!data_ptr) |
c6c8fea2 | 575 | return -1; |
c6c8fea2 SE |
576 | |
577 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
578 | del_if_num * sizeof(uint8_t)); | |
579 | ||
38e3c5f0 | 580 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
581 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
582 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
583 | ||
584 | free_own_sum: | |
585 | kfree(orig_node->bcast_own_sum); | |
586 | orig_node->bcast_own_sum = data_ptr; | |
587 | ||
588 | return 0; | |
589 | } | |
590 | ||
e6c10f43 | 591 | int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 592 | { |
e6c10f43 | 593 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 594 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 595 | struct hlist_node *node; |
c6c8fea2 | 596 | struct hlist_head *head; |
e6c10f43 | 597 | struct hard_iface *hard_iface_tmp; |
c6c8fea2 | 598 | struct orig_node *orig_node; |
c90681b8 AQ |
599 | uint32_t i; |
600 | int ret; | |
c6c8fea2 SE |
601 | |
602 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
603 | * if_num */ | |
c6c8fea2 SE |
604 | for (i = 0; i < hash->size; i++) { |
605 | head = &hash->table[i]; | |
606 | ||
fb778ea1 | 607 | rcu_read_lock(); |
7aadf889 | 608 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 609 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 610 | ret = orig_node_del_if(orig_node, max_if_num, |
e6c10f43 | 611 | hard_iface->if_num); |
2ae2daf6 | 612 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 SE |
613 | |
614 | if (ret == -1) | |
615 | goto err; | |
616 | } | |
fb778ea1 | 617 | rcu_read_unlock(); |
c6c8fea2 SE |
618 | } |
619 | ||
620 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
621 | rcu_read_lock(); | |
e6c10f43 ML |
622 | list_for_each_entry_rcu(hard_iface_tmp, &hardif_list, list) { |
623 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) | |
c6c8fea2 SE |
624 | continue; |
625 | ||
e6c10f43 | 626 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
627 | continue; |
628 | ||
e6c10f43 | 629 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
630 | continue; |
631 | ||
e6c10f43 ML |
632 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
633 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
634 | } |
635 | rcu_read_unlock(); | |
636 | ||
e6c10f43 | 637 | hard_iface->if_num = -1; |
c6c8fea2 SE |
638 | return 0; |
639 | ||
640 | err: | |
fb778ea1 | 641 | rcu_read_unlock(); |
c6c8fea2 SE |
642 | return -ENOMEM; |
643 | } |