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 | ||
a8e7f4bc ML |
88 | struct neigh_node *create_neighbor(struct orig_node *orig_node, |
89 | struct orig_node *orig_neigh_node, | |
747e4221 | 90 | const uint8_t *neigh, |
e6c10f43 | 91 | struct hard_iface *if_incoming) |
c6c8fea2 SE |
92 | { |
93 | struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); | |
94 | struct neigh_node *neigh_node; | |
95 | ||
96 | bat_dbg(DBG_BATMAN, bat_priv, | |
97 | "Creating new last-hop neighbor of originator\n"); | |
98 | ||
704509b8 | 99 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 SE |
100 | if (!neigh_node) |
101 | return NULL; | |
102 | ||
9591a79f | 103 | INIT_HLIST_NODE(&neigh_node->list); |
a4c135c5 | 104 | INIT_LIST_HEAD(&neigh_node->bonding_list); |
68003903 | 105 | spin_lock_init(&neigh_node->tq_lock); |
c6c8fea2 SE |
106 | |
107 | memcpy(neigh_node->addr, neigh, ETH_ALEN); | |
108 | neigh_node->orig_node = orig_neigh_node; | |
109 | neigh_node->if_incoming = if_incoming; | |
1605d0d6 ML |
110 | |
111 | /* extra reference for return */ | |
112 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 113 | |
f987ed6e ML |
114 | spin_lock_bh(&orig_node->neigh_list_lock); |
115 | hlist_add_head_rcu(&neigh_node->list, &orig_node->neigh_list); | |
116 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
117 | return neigh_node; |
118 | } | |
119 | ||
7b36e8ee | 120 | static void orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 121 | { |
9591a79f | 122 | struct hlist_node *node, *node_tmp; |
a4c135c5 | 123 | struct neigh_node *neigh_node, *tmp_neigh_node; |
16b1aba8 ML |
124 | struct orig_node *orig_node; |
125 | ||
7b36e8ee | 126 | orig_node = container_of(rcu, struct orig_node, rcu); |
c6c8fea2 | 127 | |
f987ed6e ML |
128 | spin_lock_bh(&orig_node->neigh_list_lock); |
129 | ||
a4c135c5 SW |
130 | /* for all bonding members ... */ |
131 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
132 | &orig_node->bond_list, bonding_list) { | |
133 | list_del_rcu(&neigh_node->bonding_list); | |
44524fcd | 134 | neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
135 | } |
136 | ||
c6c8fea2 | 137 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
138 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
139 | &orig_node->neigh_list, list) { | |
f987ed6e | 140 | hlist_del_rcu(&neigh_node->list); |
44524fcd | 141 | neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
142 | } |
143 | ||
f987ed6e ML |
144 | spin_unlock_bh(&orig_node->neigh_list_lock); |
145 | ||
c6c8fea2 | 146 | frag_list_free(&orig_node->frag_list); |
2dafb49d | 147 | tt_global_del_orig(orig_node->bat_priv, orig_node, |
7c64fd98 | 148 | "originator timed out"); |
c6c8fea2 | 149 | |
a73105b8 | 150 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
151 | kfree(orig_node->bcast_own); |
152 | kfree(orig_node->bcast_own_sum); | |
153 | kfree(orig_node); | |
154 | } | |
155 | ||
7b36e8ee ML |
156 | void orig_node_free_ref(struct orig_node *orig_node) |
157 | { | |
158 | if (atomic_dec_and_test(&orig_node->refcount)) | |
159 | call_rcu(&orig_node->rcu, orig_node_free_rcu); | |
160 | } | |
161 | ||
c6c8fea2 SE |
162 | void originator_free(struct bat_priv *bat_priv) |
163 | { | |
16b1aba8 | 164 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 165 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 166 | struct hlist_head *head; |
16b1aba8 ML |
167 | spinlock_t *list_lock; /* spinlock to protect write access */ |
168 | struct orig_node *orig_node; | |
c90681b8 | 169 | uint32_t i; |
16b1aba8 ML |
170 | |
171 | if (!hash) | |
c6c8fea2 SE |
172 | return; |
173 | ||
174 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
175 | ||
c6c8fea2 | 176 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
177 | |
178 | for (i = 0; i < hash->size; i++) { | |
179 | head = &hash->table[i]; | |
180 | list_lock = &hash->list_locks[i]; | |
181 | ||
182 | spin_lock_bh(list_lock); | |
7aadf889 ML |
183 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
184 | head, hash_entry) { | |
16b1aba8 | 185 | |
7aadf889 | 186 | hlist_del_rcu(node); |
7b36e8ee | 187 | orig_node_free_ref(orig_node); |
16b1aba8 ML |
188 | } |
189 | spin_unlock_bh(list_lock); | |
190 | } | |
191 | ||
192 | hash_destroy(hash); | |
c6c8fea2 SE |
193 | } |
194 | ||
195 | /* this function finds or creates an originator entry for the given | |
196 | * address if it does not exits */ | |
747e4221 | 197 | struct orig_node *get_orig_node(struct bat_priv *bat_priv, const uint8_t *addr) |
c6c8fea2 SE |
198 | { |
199 | struct orig_node *orig_node; | |
200 | int size; | |
201 | int hash_added; | |
202 | ||
7aadf889 ML |
203 | orig_node = orig_hash_find(bat_priv, addr); |
204 | if (orig_node) | |
c6c8fea2 SE |
205 | return orig_node; |
206 | ||
207 | bat_dbg(DBG_BATMAN, bat_priv, | |
208 | "Creating new originator: %pM\n", addr); | |
209 | ||
704509b8 | 210 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
211 | if (!orig_node) |
212 | return NULL; | |
213 | ||
9591a79f | 214 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 215 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 216 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 217 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 218 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 219 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
220 | |
221 | /* extra reference for return */ | |
222 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 223 | |
17071578 | 224 | orig_node->tt_initialised = false; |
cc47f66e | 225 | orig_node->tt_poss_change = false; |
16b1aba8 | 226 | orig_node->bat_priv = bat_priv; |
c6c8fea2 SE |
227 | memcpy(orig_node->orig, addr, ETH_ALEN); |
228 | orig_node->router = NULL; | |
c8c991bf AQ |
229 | orig_node->tt_crc = 0; |
230 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 231 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
232 | orig_node->tt_buff_len = 0; |
233 | atomic_set(&orig_node->tt_size, 0); | |
c6c8fea2 SE |
234 | orig_node->bcast_seqno_reset = jiffies - 1 |
235 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
236 | orig_node->batman_seqno_reset = jiffies - 1 | |
237 | - msecs_to_jiffies(RESET_PROTECTION_MS); | |
238 | ||
a4c135c5 SW |
239 | atomic_set(&orig_node->bond_candidates, 0); |
240 | ||
c6c8fea2 SE |
241 | size = bat_priv->num_ifaces * sizeof(unsigned long) * NUM_WORDS; |
242 | ||
243 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
244 | if (!orig_node->bcast_own) | |
245 | goto free_orig_node; | |
246 | ||
247 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
248 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
249 | ||
250 | INIT_LIST_HEAD(&orig_node->frag_list); | |
251 | orig_node->last_frag_packet = 0; | |
252 | ||
253 | if (!orig_node->bcast_own_sum) | |
254 | goto free_bcast_own; | |
255 | ||
7aadf889 ML |
256 | hash_added = hash_add(bat_priv->orig_hash, compare_orig, |
257 | choose_orig, orig_node, &orig_node->hash_entry); | |
1a1f37d9 | 258 | if (hash_added != 0) |
c6c8fea2 SE |
259 | goto free_bcast_own_sum; |
260 | ||
261 | return orig_node; | |
262 | free_bcast_own_sum: | |
263 | kfree(orig_node->bcast_own_sum); | |
264 | free_bcast_own: | |
265 | kfree(orig_node->bcast_own); | |
266 | free_orig_node: | |
267 | kfree(orig_node); | |
268 | return NULL; | |
269 | } | |
270 | ||
271 | static bool purge_orig_neighbors(struct bat_priv *bat_priv, | |
272 | struct orig_node *orig_node, | |
273 | struct neigh_node **best_neigh_node) | |
274 | { | |
9591a79f | 275 | struct hlist_node *node, *node_tmp; |
c6c8fea2 SE |
276 | struct neigh_node *neigh_node; |
277 | bool neigh_purged = false; | |
0b0094e0 | 278 | unsigned long last_seen; |
c6c8fea2 SE |
279 | |
280 | *best_neigh_node = NULL; | |
281 | ||
f987ed6e ML |
282 | spin_lock_bh(&orig_node->neigh_list_lock); |
283 | ||
c6c8fea2 | 284 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
285 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
286 | &orig_node->neigh_list, list) { | |
c6c8fea2 | 287 | |
d7b2a97e | 288 | if ((has_timed_out(neigh_node->last_seen, PURGE_TIMEOUT)) || |
c6c8fea2 | 289 | (neigh_node->if_incoming->if_status == IF_INACTIVE) || |
1a241a57 | 290 | (neigh_node->if_incoming->if_status == IF_NOT_IN_USE) || |
c6c8fea2 SE |
291 | (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) { |
292 | ||
0b0094e0 ML |
293 | last_seen = neigh_node->last_seen; |
294 | ||
1a241a57 ML |
295 | if ((neigh_node->if_incoming->if_status == |
296 | IF_INACTIVE) || | |
297 | (neigh_node->if_incoming->if_status == | |
298 | IF_NOT_IN_USE) || | |
299 | (neigh_node->if_incoming->if_status == | |
300 | IF_TO_BE_REMOVED)) | |
c6c8fea2 | 301 | bat_dbg(DBG_BATMAN, bat_priv, |
86ceb360 | 302 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
c6c8fea2 SE |
303 | orig_node->orig, neigh_node->addr, |
304 | neigh_node->if_incoming->net_dev->name); | |
305 | else | |
306 | bat_dbg(DBG_BATMAN, bat_priv, | |
0b0094e0 | 307 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
c6c8fea2 | 308 | orig_node->orig, neigh_node->addr, |
0b0094e0 | 309 | jiffies_to_msecs(last_seen)); |
c6c8fea2 SE |
310 | |
311 | neigh_purged = true; | |
9591a79f | 312 | |
f987ed6e | 313 | hlist_del_rcu(&neigh_node->list); |
a4c135c5 | 314 | bonding_candidate_del(orig_node, neigh_node); |
44524fcd | 315 | neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
316 | } else { |
317 | if ((!*best_neigh_node) || | |
318 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
319 | *best_neigh_node = neigh_node; | |
320 | } | |
321 | } | |
f987ed6e ML |
322 | |
323 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
324 | return neigh_purged; |
325 | } | |
326 | ||
327 | static bool purge_orig_node(struct bat_priv *bat_priv, | |
328 | struct orig_node *orig_node) | |
329 | { | |
330 | struct neigh_node *best_neigh_node; | |
331 | ||
d7b2a97e | 332 | if (has_timed_out(orig_node->last_seen, 2 * PURGE_TIMEOUT)) { |
c6c8fea2 | 333 | bat_dbg(DBG_BATMAN, bat_priv, |
0b0094e0 ML |
334 | "Originator timeout: originator %pM, last_seen %u\n", |
335 | orig_node->orig, | |
336 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
337 | return true; |
338 | } else { | |
339 | if (purge_orig_neighbors(bat_priv, orig_node, | |
7c64fd98 | 340 | &best_neigh_node)) |
fc957275 | 341 | update_route(bat_priv, orig_node, best_neigh_node); |
c6c8fea2 SE |
342 | } |
343 | ||
344 | return false; | |
345 | } | |
346 | ||
347 | static void _purge_orig(struct bat_priv *bat_priv) | |
348 | { | |
349 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 350 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 351 | struct hlist_head *head; |
fb778ea1 | 352 | spinlock_t *list_lock; /* spinlock to protect write access */ |
c6c8fea2 | 353 | struct orig_node *orig_node; |
c90681b8 | 354 | uint32_t i; |
c6c8fea2 SE |
355 | |
356 | if (!hash) | |
357 | return; | |
358 | ||
c6c8fea2 SE |
359 | /* for all origins... */ |
360 | for (i = 0; i < hash->size; i++) { | |
361 | head = &hash->table[i]; | |
fb778ea1 | 362 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 363 | |
fb778ea1 | 364 | spin_lock_bh(list_lock); |
7aadf889 ML |
365 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
366 | head, hash_entry) { | |
c6c8fea2 SE |
367 | if (purge_orig_node(bat_priv, orig_node)) { |
368 | if (orig_node->gw_flags) | |
369 | gw_node_delete(bat_priv, orig_node); | |
7aadf889 | 370 | hlist_del_rcu(node); |
7b36e8ee | 371 | orig_node_free_ref(orig_node); |
fb778ea1 | 372 | continue; |
c6c8fea2 SE |
373 | } |
374 | ||
032b7969 ML |
375 | if (has_timed_out(orig_node->last_frag_packet, |
376 | FRAG_TIMEOUT)) | |
c6c8fea2 SE |
377 | frag_list_free(&orig_node->frag_list); |
378 | } | |
fb778ea1 | 379 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
380 | } |
381 | ||
c6c8fea2 SE |
382 | gw_node_purge(bat_priv); |
383 | gw_election(bat_priv); | |
c6c8fea2 SE |
384 | } |
385 | ||
386 | static void purge_orig(struct work_struct *work) | |
387 | { | |
388 | struct delayed_work *delayed_work = | |
389 | container_of(work, struct delayed_work, work); | |
390 | struct bat_priv *bat_priv = | |
391 | container_of(delayed_work, struct bat_priv, orig_work); | |
392 | ||
393 | _purge_orig(bat_priv); | |
394 | start_purge_timer(bat_priv); | |
395 | } | |
396 | ||
397 | void purge_orig_ref(struct bat_priv *bat_priv) | |
398 | { | |
399 | _purge_orig(bat_priv); | |
400 | } | |
401 | ||
402 | int orig_seq_print_text(struct seq_file *seq, void *offset) | |
403 | { | |
404 | struct net_device *net_dev = (struct net_device *)seq->private; | |
405 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
406 | struct hashtable_t *hash = bat_priv->orig_hash; | |
7aadf889 | 407 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 408 | struct hlist_head *head; |
32ae9b22 | 409 | struct hard_iface *primary_if; |
c6c8fea2 | 410 | struct orig_node *orig_node; |
e1a5382f | 411 | struct neigh_node *neigh_node, *neigh_node_tmp; |
c6c8fea2 SE |
412 | int batman_count = 0; |
413 | int last_seen_secs; | |
414 | int last_seen_msecs; | |
c90681b8 AQ |
415 | uint32_t i; |
416 | int ret = 0; | |
32ae9b22 ML |
417 | |
418 | primary_if = primary_if_get_selected(bat_priv); | |
c6c8fea2 | 419 | |
32ae9b22 | 420 | if (!primary_if) { |
86ceb360 SE |
421 | ret = seq_printf(seq, |
422 | "BATMAN mesh %s disabled - please specify interfaces to enable it\n", | |
32ae9b22 ML |
423 | net_dev->name); |
424 | goto out; | |
425 | } | |
c6c8fea2 | 426 | |
32ae9b22 | 427 | if (primary_if->if_status != IF_ACTIVE) { |
86ceb360 SE |
428 | ret = seq_printf(seq, |
429 | "BATMAN mesh %s disabled - primary interface not active\n", | |
32ae9b22 ML |
430 | net_dev->name); |
431 | goto out; | |
c6c8fea2 SE |
432 | } |
433 | ||
44c4349a SE |
434 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
435 | SOURCE_VERSION, primary_if->net_dev->name, | |
32ae9b22 | 436 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 SE |
437 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
438 | "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", | |
439 | "outgoingIF", "Potential nexthops"); | |
440 | ||
c6c8fea2 SE |
441 | for (i = 0; i < hash->size; i++) { |
442 | head = &hash->table[i]; | |
443 | ||
fb778ea1 | 444 | rcu_read_lock(); |
7aadf889 | 445 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
e1a5382f LL |
446 | neigh_node = orig_node_get_router(orig_node); |
447 | if (!neigh_node) | |
c6c8fea2 SE |
448 | continue; |
449 | ||
e1a5382f LL |
450 | if (neigh_node->tq_avg == 0) |
451 | goto next; | |
c6c8fea2 SE |
452 | |
453 | last_seen_secs = jiffies_to_msecs(jiffies - | |
d7b2a97e | 454 | orig_node->last_seen) / 1000; |
c6c8fea2 | 455 | last_seen_msecs = jiffies_to_msecs(jiffies - |
d7b2a97e | 456 | orig_node->last_seen) % 1000; |
c6c8fea2 | 457 | |
c6c8fea2 SE |
458 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
459 | orig_node->orig, last_seen_secs, | |
460 | last_seen_msecs, neigh_node->tq_avg, | |
461 | neigh_node->addr, | |
462 | neigh_node->if_incoming->net_dev->name); | |
463 | ||
e1a5382f | 464 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 465 | &orig_node->neigh_list, list) { |
e1a5382f LL |
466 | seq_printf(seq, " %pM (%3i)", |
467 | neigh_node_tmp->addr, | |
468 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
469 | } |
470 | ||
471 | seq_printf(seq, "\n"); | |
472 | batman_count++; | |
e1a5382f LL |
473 | |
474 | next: | |
475 | neigh_node_free_ref(neigh_node); | |
c6c8fea2 | 476 | } |
fb778ea1 | 477 | rcu_read_unlock(); |
c6c8fea2 SE |
478 | } |
479 | ||
e1a5382f | 480 | if (batman_count == 0) |
c6c8fea2 SE |
481 | seq_printf(seq, "No batman nodes in range ...\n"); |
482 | ||
32ae9b22 ML |
483 | out: |
484 | if (primary_if) | |
485 | hardif_free_ref(primary_if); | |
486 | return ret; | |
c6c8fea2 SE |
487 | } |
488 | ||
489 | static int orig_node_add_if(struct orig_node *orig_node, int max_if_num) | |
490 | { | |
491 | void *data_ptr; | |
492 | ||
493 | data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS, | |
494 | GFP_ATOMIC); | |
320f422f | 495 | if (!data_ptr) |
c6c8fea2 | 496 | return -1; |
c6c8fea2 SE |
497 | |
498 | memcpy(data_ptr, orig_node->bcast_own, | |
499 | (max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS); | |
500 | kfree(orig_node->bcast_own); | |
501 | orig_node->bcast_own = data_ptr; | |
502 | ||
503 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 504 | if (!data_ptr) |
c6c8fea2 | 505 | return -1; |
c6c8fea2 SE |
506 | |
507 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
508 | (max_if_num - 1) * sizeof(uint8_t)); | |
509 | kfree(orig_node->bcast_own_sum); | |
510 | orig_node->bcast_own_sum = data_ptr; | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
e6c10f43 | 515 | int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 516 | { |
e6c10f43 | 517 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 518 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 519 | struct hlist_node *node; |
c6c8fea2 | 520 | struct hlist_head *head; |
c6c8fea2 | 521 | struct orig_node *orig_node; |
c90681b8 AQ |
522 | uint32_t i; |
523 | int ret; | |
c6c8fea2 SE |
524 | |
525 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
526 | * if_num */ | |
c6c8fea2 SE |
527 | for (i = 0; i < hash->size; i++) { |
528 | head = &hash->table[i]; | |
529 | ||
fb778ea1 | 530 | rcu_read_lock(); |
7aadf889 | 531 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 ML |
532 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
533 | ret = orig_node_add_if(orig_node, max_if_num); | |
534 | spin_unlock_bh(&orig_node->ogm_cnt_lock); | |
535 | ||
536 | if (ret == -1) | |
c6c8fea2 SE |
537 | goto err; |
538 | } | |
fb778ea1 | 539 | rcu_read_unlock(); |
c6c8fea2 SE |
540 | } |
541 | ||
c6c8fea2 SE |
542 | return 0; |
543 | ||
544 | err: | |
fb778ea1 | 545 | rcu_read_unlock(); |
c6c8fea2 SE |
546 | return -ENOMEM; |
547 | } | |
548 | ||
549 | static int orig_node_del_if(struct orig_node *orig_node, | |
550 | int max_if_num, int del_if_num) | |
551 | { | |
552 | void *data_ptr = NULL; | |
553 | int chunk_size; | |
554 | ||
555 | /* last interface was removed */ | |
556 | if (max_if_num == 0) | |
557 | goto free_bcast_own; | |
558 | ||
559 | chunk_size = sizeof(unsigned long) * NUM_WORDS; | |
560 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); | |
320f422f | 561 | if (!data_ptr) |
c6c8fea2 | 562 | return -1; |
c6c8fea2 SE |
563 | |
564 | /* copy first part */ | |
565 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
566 | ||
567 | /* copy second part */ | |
38e3c5f0 | 568 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
569 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
570 | (max_if_num - del_if_num) * chunk_size); | |
571 | ||
572 | free_bcast_own: | |
573 | kfree(orig_node->bcast_own); | |
574 | orig_node->bcast_own = data_ptr; | |
575 | ||
576 | if (max_if_num == 0) | |
577 | goto free_own_sum; | |
578 | ||
579 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 580 | if (!data_ptr) |
c6c8fea2 | 581 | return -1; |
c6c8fea2 SE |
582 | |
583 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
584 | del_if_num * sizeof(uint8_t)); | |
585 | ||
38e3c5f0 | 586 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
587 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
588 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
589 | ||
590 | free_own_sum: | |
591 | kfree(orig_node->bcast_own_sum); | |
592 | orig_node->bcast_own_sum = data_ptr; | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
e6c10f43 | 597 | int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num) |
c6c8fea2 | 598 | { |
e6c10f43 | 599 | struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
c6c8fea2 | 600 | struct hashtable_t *hash = bat_priv->orig_hash; |
7aadf889 | 601 | struct hlist_node *node; |
c6c8fea2 | 602 | struct hlist_head *head; |
e6c10f43 | 603 | struct hard_iface *hard_iface_tmp; |
c6c8fea2 | 604 | struct orig_node *orig_node; |
c90681b8 AQ |
605 | uint32_t i; |
606 | int ret; | |
c6c8fea2 SE |
607 | |
608 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
609 | * if_num */ | |
c6c8fea2 SE |
610 | for (i = 0; i < hash->size; i++) { |
611 | head = &hash->table[i]; | |
612 | ||
fb778ea1 | 613 | rcu_read_lock(); |
7aadf889 | 614 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 615 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 616 | ret = orig_node_del_if(orig_node, max_if_num, |
e6c10f43 | 617 | hard_iface->if_num); |
2ae2daf6 | 618 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 SE |
619 | |
620 | if (ret == -1) | |
621 | goto err; | |
622 | } | |
fb778ea1 | 623 | rcu_read_unlock(); |
c6c8fea2 SE |
624 | } |
625 | ||
626 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
627 | rcu_read_lock(); | |
e6c10f43 ML |
628 | list_for_each_entry_rcu(hard_iface_tmp, &hardif_list, list) { |
629 | if (hard_iface_tmp->if_status == IF_NOT_IN_USE) | |
c6c8fea2 SE |
630 | continue; |
631 | ||
e6c10f43 | 632 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
633 | continue; |
634 | ||
e6c10f43 | 635 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
636 | continue; |
637 | ||
e6c10f43 ML |
638 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
639 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
640 | } |
641 | rcu_read_unlock(); | |
642 | ||
e6c10f43 | 643 | hard_iface->if_num = -1; |
c6c8fea2 SE |
644 | return 0; |
645 | ||
646 | err: | |
fb778ea1 | 647 | rcu_read_unlock(); |
c6c8fea2 SE |
648 | return -ENOMEM; |
649 | } |