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9cfc7bd6 | 1 | /* Copyright (C) 2009-2012 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
2 | * |
3 | * Marek Lindner, Simon Wunderlich | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of version 2 of the GNU General Public | |
7 | * License as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
17 | * 02110-1301, USA | |
c6c8fea2 SE |
18 | */ |
19 | ||
c6c8fea2 | 20 | #include "main.h" |
785ea114 | 21 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
22 | #include "originator.h" |
23 | #include "hash.h" | |
24 | #include "translation-table.h" | |
25 | #include "routing.h" | |
26 | #include "gateway_client.h" | |
27 | #include "hard-interface.h" | |
28 | #include "unicast.h" | |
29 | #include "soft-interface.h" | |
23721387 | 30 | #include "bridge_loop_avoidance.h" |
c6c8fea2 | 31 | |
dec05074 AQ |
32 | /* hash class keys */ |
33 | static struct lock_class_key batadv_orig_hash_lock_class_key; | |
34 | ||
03fc7f86 | 35 | static void batadv_purge_orig(struct work_struct *work); |
c6c8fea2 | 36 | |
56303d34 | 37 | static void batadv_start_purge_timer(struct batadv_priv *bat_priv) |
c6c8fea2 | 38 | { |
03fc7f86 | 39 | INIT_DELAYED_WORK(&bat_priv->orig_work, batadv_purge_orig); |
3193e8fd | 40 | queue_delayed_work(batadv_event_workqueue, |
0b0094e0 | 41 | &bat_priv->orig_work, msecs_to_jiffies(1000)); |
c6c8fea2 SE |
42 | } |
43 | ||
b8e2dd13 | 44 | /* returns 1 if they are the same originator */ |
03fc7f86 | 45 | static int batadv_compare_orig(const struct hlist_node *node, const void *data2) |
b8e2dd13 | 46 | { |
56303d34 SE |
47 | const void *data1 = container_of(node, struct batadv_orig_node, |
48 | hash_entry); | |
b8e2dd13 SE |
49 | |
50 | return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); | |
51 | } | |
52 | ||
56303d34 | 53 | int batadv_originator_init(struct batadv_priv *bat_priv) |
c6c8fea2 SE |
54 | { |
55 | if (bat_priv->orig_hash) | |
5346c35e | 56 | return 0; |
c6c8fea2 | 57 | |
1a8eaf07 | 58 | bat_priv->orig_hash = batadv_hash_new(1024); |
c6c8fea2 SE |
59 | |
60 | if (!bat_priv->orig_hash) | |
61 | goto err; | |
62 | ||
dec05074 AQ |
63 | batadv_hash_set_lock_class(bat_priv->orig_hash, |
64 | &batadv_orig_hash_lock_class_key); | |
65 | ||
03fc7f86 | 66 | batadv_start_purge_timer(bat_priv); |
5346c35e | 67 | return 0; |
c6c8fea2 SE |
68 | |
69 | err: | |
5346c35e | 70 | return -ENOMEM; |
c6c8fea2 SE |
71 | } |
72 | ||
56303d34 | 73 | void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) |
a4c135c5 | 74 | { |
44524fcd | 75 | if (atomic_dec_and_test(&neigh_node->refcount)) |
ae179ae4 | 76 | kfree_rcu(neigh_node, rcu); |
a4c135c5 SW |
77 | } |
78 | ||
e1a5382f | 79 | /* increases the refcounter of a found router */ |
56303d34 SE |
80 | struct batadv_neigh_node * |
81 | batadv_orig_node_get_router(struct batadv_orig_node *orig_node) | |
e1a5382f | 82 | { |
56303d34 | 83 | struct batadv_neigh_node *router; |
e1a5382f LL |
84 | |
85 | rcu_read_lock(); | |
86 | router = rcu_dereference(orig_node->router); | |
87 | ||
88 | if (router && !atomic_inc_not_zero(&router->refcount)) | |
89 | router = NULL; | |
90 | ||
91 | rcu_read_unlock(); | |
92 | return router; | |
93 | } | |
94 | ||
56303d34 SE |
95 | struct batadv_neigh_node * |
96 | batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, | |
97 | const uint8_t *neigh_addr, uint32_t seqno) | |
c6c8fea2 | 98 | { |
56303d34 SE |
99 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
100 | struct batadv_neigh_node *neigh_node; | |
c6c8fea2 | 101 | |
704509b8 | 102 | neigh_node = kzalloc(sizeof(*neigh_node), GFP_ATOMIC); |
c6c8fea2 | 103 | if (!neigh_node) |
7ae8b285 | 104 | goto out; |
c6c8fea2 | 105 | |
9591a79f | 106 | INIT_HLIST_NODE(&neigh_node->list); |
c6c8fea2 | 107 | |
7ae8b285 | 108 | memcpy(neigh_node->addr, neigh_addr, ETH_ALEN); |
e3b0d0de | 109 | spin_lock_init(&neigh_node->lq_update_lock); |
1605d0d6 ML |
110 | |
111 | /* extra reference for return */ | |
112 | atomic_set(&neigh_node->refcount, 2); | |
c6c8fea2 | 113 | |
39c75a51 | 114 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
115 | "Creating new neighbor %pM, initial seqno %d\n", |
116 | neigh_addr, seqno); | |
7ae8b285 ML |
117 | |
118 | out: | |
c6c8fea2 SE |
119 | return neigh_node; |
120 | } | |
121 | ||
03fc7f86 | 122 | static void batadv_orig_node_free_rcu(struct rcu_head *rcu) |
c6c8fea2 | 123 | { |
9591a79f | 124 | struct hlist_node *node, *node_tmp; |
56303d34 SE |
125 | struct batadv_neigh_node *neigh_node, *tmp_neigh_node; |
126 | struct batadv_orig_node *orig_node; | |
16b1aba8 | 127 | |
56303d34 | 128 | orig_node = container_of(rcu, struct batadv_orig_node, rcu); |
c6c8fea2 | 129 | |
f987ed6e ML |
130 | spin_lock_bh(&orig_node->neigh_list_lock); |
131 | ||
a4c135c5 SW |
132 | /* for all bonding members ... */ |
133 | list_for_each_entry_safe(neigh_node, tmp_neigh_node, | |
134 | &orig_node->bond_list, bonding_list) { | |
135 | list_del_rcu(&neigh_node->bonding_list); | |
7d211efc | 136 | batadv_neigh_node_free_ref(neigh_node); |
a4c135c5 SW |
137 | } |
138 | ||
c6c8fea2 | 139 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
140 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
141 | &orig_node->neigh_list, list) { | |
f987ed6e | 142 | hlist_del_rcu(&neigh_node->list); |
7d211efc | 143 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
144 | } |
145 | ||
f987ed6e ML |
146 | spin_unlock_bh(&orig_node->neigh_list_lock); |
147 | ||
88ed1e77 | 148 | batadv_frag_list_free(&orig_node->frag_list); |
08c36d3e SE |
149 | batadv_tt_global_del_orig(orig_node->bat_priv, orig_node, |
150 | "originator timed out"); | |
c6c8fea2 | 151 | |
a73105b8 | 152 | kfree(orig_node->tt_buff); |
c6c8fea2 SE |
153 | kfree(orig_node->bcast_own); |
154 | kfree(orig_node->bcast_own_sum); | |
155 | kfree(orig_node); | |
156 | } | |
157 | ||
56303d34 | 158 | void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node) |
7b36e8ee ML |
159 | { |
160 | if (atomic_dec_and_test(&orig_node->refcount)) | |
03fc7f86 | 161 | call_rcu(&orig_node->rcu, batadv_orig_node_free_rcu); |
7b36e8ee ML |
162 | } |
163 | ||
56303d34 | 164 | void batadv_originator_free(struct batadv_priv *bat_priv) |
c6c8fea2 | 165 | { |
5bf74e9c | 166 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 167 | struct hlist_node *node, *node_tmp; |
16b1aba8 | 168 | struct hlist_head *head; |
16b1aba8 | 169 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 170 | struct batadv_orig_node *orig_node; |
c90681b8 | 171 | uint32_t i; |
16b1aba8 ML |
172 | |
173 | if (!hash) | |
c6c8fea2 SE |
174 | return; |
175 | ||
176 | cancel_delayed_work_sync(&bat_priv->orig_work); | |
177 | ||
c6c8fea2 | 178 | bat_priv->orig_hash = NULL; |
16b1aba8 ML |
179 | |
180 | for (i = 0; i < hash->size; i++) { | |
181 | head = &hash->table[i]; | |
182 | list_lock = &hash->list_locks[i]; | |
183 | ||
184 | spin_lock_bh(list_lock); | |
7aadf889 ML |
185 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
186 | head, hash_entry) { | |
7aadf889 | 187 | hlist_del_rcu(node); |
7d211efc | 188 | batadv_orig_node_free_ref(orig_node); |
16b1aba8 ML |
189 | } |
190 | spin_unlock_bh(list_lock); | |
191 | } | |
192 | ||
1a8eaf07 | 193 | batadv_hash_destroy(hash); |
c6c8fea2 SE |
194 | } |
195 | ||
196 | /* this function finds or creates an originator entry for the given | |
9cfc7bd6 SE |
197 | * address if it does not exits |
198 | */ | |
56303d34 SE |
199 | struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv, |
200 | const uint8_t *addr) | |
c6c8fea2 | 201 | { |
56303d34 | 202 | struct batadv_orig_node *orig_node; |
c6c8fea2 SE |
203 | int size; |
204 | int hash_added; | |
42d0b044 | 205 | unsigned long reset_time; |
c6c8fea2 | 206 | |
da641193 | 207 | orig_node = batadv_orig_hash_find(bat_priv, addr); |
7aadf889 | 208 | if (orig_node) |
c6c8fea2 SE |
209 | return orig_node; |
210 | ||
39c75a51 SE |
211 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
212 | "Creating new originator: %pM\n", addr); | |
c6c8fea2 | 213 | |
704509b8 | 214 | orig_node = kzalloc(sizeof(*orig_node), GFP_ATOMIC); |
c6c8fea2 SE |
215 | if (!orig_node) |
216 | return NULL; | |
217 | ||
9591a79f | 218 | INIT_HLIST_HEAD(&orig_node->neigh_list); |
a4c135c5 | 219 | INIT_LIST_HEAD(&orig_node->bond_list); |
2ae2daf6 | 220 | spin_lock_init(&orig_node->ogm_cnt_lock); |
f3e0008f | 221 | spin_lock_init(&orig_node->bcast_seqno_lock); |
f987ed6e | 222 | spin_lock_init(&orig_node->neigh_list_lock); |
a73105b8 | 223 | spin_lock_init(&orig_node->tt_buff_lock); |
7b36e8ee ML |
224 | |
225 | /* extra reference for return */ | |
226 | atomic_set(&orig_node->refcount, 2); | |
c6c8fea2 | 227 | |
17071578 | 228 | orig_node->tt_initialised = false; |
16b1aba8 | 229 | orig_node->bat_priv = bat_priv; |
c6c8fea2 | 230 | memcpy(orig_node->orig, addr, ETH_ALEN); |
785ea114 | 231 | batadv_dat_init_orig_node_addr(orig_node); |
c6c8fea2 | 232 | orig_node->router = NULL; |
c8c991bf AQ |
233 | orig_node->tt_crc = 0; |
234 | atomic_set(&orig_node->last_ttvn, 0); | |
2dafb49d | 235 | orig_node->tt_buff = NULL; |
a73105b8 AQ |
236 | orig_node->tt_buff_len = 0; |
237 | atomic_set(&orig_node->tt_size, 0); | |
42d0b044 SE |
238 | reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); |
239 | orig_node->bcast_seqno_reset = reset_time; | |
240 | orig_node->batman_seqno_reset = reset_time; | |
c6c8fea2 | 241 | |
a4c135c5 SW |
242 | atomic_set(&orig_node->bond_candidates, 0); |
243 | ||
42d0b044 | 244 | size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 SE |
245 | |
246 | orig_node->bcast_own = kzalloc(size, GFP_ATOMIC); | |
247 | if (!orig_node->bcast_own) | |
248 | goto free_orig_node; | |
249 | ||
250 | size = bat_priv->num_ifaces * sizeof(uint8_t); | |
251 | orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC); | |
252 | ||
253 | INIT_LIST_HEAD(&orig_node->frag_list); | |
254 | orig_node->last_frag_packet = 0; | |
255 | ||
256 | if (!orig_node->bcast_own_sum) | |
257 | goto free_bcast_own; | |
258 | ||
03fc7f86 | 259 | hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig, |
da641193 | 260 | batadv_choose_orig, orig_node, |
c0a55929 | 261 | &orig_node->hash_entry); |
1a1f37d9 | 262 | if (hash_added != 0) |
c6c8fea2 SE |
263 | goto free_bcast_own_sum; |
264 | ||
265 | return orig_node; | |
266 | free_bcast_own_sum: | |
267 | kfree(orig_node->bcast_own_sum); | |
268 | free_bcast_own: | |
269 | kfree(orig_node->bcast_own); | |
270 | free_orig_node: | |
271 | kfree(orig_node); | |
272 | return NULL; | |
273 | } | |
274 | ||
56303d34 SE |
275 | static bool |
276 | batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, | |
277 | struct batadv_orig_node *orig_node, | |
278 | struct batadv_neigh_node **best_neigh_node) | |
c6c8fea2 | 279 | { |
9591a79f | 280 | struct hlist_node *node, *node_tmp; |
56303d34 | 281 | struct batadv_neigh_node *neigh_node; |
c6c8fea2 | 282 | bool neigh_purged = false; |
0b0094e0 | 283 | unsigned long last_seen; |
56303d34 | 284 | struct batadv_hard_iface *if_incoming; |
c6c8fea2 SE |
285 | |
286 | *best_neigh_node = NULL; | |
287 | ||
f987ed6e ML |
288 | spin_lock_bh(&orig_node->neigh_list_lock); |
289 | ||
c6c8fea2 | 290 | /* for all neighbors towards this originator ... */ |
9591a79f ML |
291 | hlist_for_each_entry_safe(neigh_node, node, node_tmp, |
292 | &orig_node->neigh_list, list) { | |
1eda58bf SE |
293 | last_seen = neigh_node->last_seen; |
294 | if_incoming = neigh_node->if_incoming; | |
295 | ||
42d0b044 | 296 | if ((batadv_has_timed_out(last_seen, BATADV_PURGE_TIMEOUT)) || |
e9a4f295 SE |
297 | (if_incoming->if_status == BATADV_IF_INACTIVE) || |
298 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
299 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) { | |
e9a4f295 SE |
300 | if ((if_incoming->if_status == BATADV_IF_INACTIVE) || |
301 | (if_incoming->if_status == BATADV_IF_NOT_IN_USE) || | |
302 | (if_incoming->if_status == BATADV_IF_TO_BE_REMOVED)) | |
39c75a51 | 303 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
304 | "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n", |
305 | orig_node->orig, neigh_node->addr, | |
306 | if_incoming->net_dev->name); | |
c6c8fea2 | 307 | else |
39c75a51 | 308 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
309 | "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n", |
310 | orig_node->orig, neigh_node->addr, | |
311 | jiffies_to_msecs(last_seen)); | |
c6c8fea2 SE |
312 | |
313 | neigh_purged = true; | |
9591a79f | 314 | |
f987ed6e | 315 | hlist_del_rcu(&neigh_node->list); |
30d3c511 | 316 | batadv_bonding_candidate_del(orig_node, neigh_node); |
7d211efc | 317 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 SE |
318 | } else { |
319 | if ((!*best_neigh_node) || | |
320 | (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) | |
321 | *best_neigh_node = neigh_node; | |
322 | } | |
323 | } | |
f987ed6e ML |
324 | |
325 | spin_unlock_bh(&orig_node->neigh_list_lock); | |
c6c8fea2 SE |
326 | return neigh_purged; |
327 | } | |
328 | ||
56303d34 SE |
329 | static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, |
330 | struct batadv_orig_node *orig_node) | |
c6c8fea2 | 331 | { |
56303d34 | 332 | struct batadv_neigh_node *best_neigh_node; |
c6c8fea2 | 333 | |
42d0b044 SE |
334 | if (batadv_has_timed_out(orig_node->last_seen, |
335 | 2 * BATADV_PURGE_TIMEOUT)) { | |
39c75a51 | 336 | batadv_dbg(BATADV_DBG_BATMAN, bat_priv, |
1eda58bf SE |
337 | "Originator timeout: originator %pM, last_seen %u\n", |
338 | orig_node->orig, | |
339 | jiffies_to_msecs(orig_node->last_seen)); | |
c6c8fea2 SE |
340 | return true; |
341 | } else { | |
03fc7f86 SE |
342 | if (batadv_purge_orig_neighbors(bat_priv, orig_node, |
343 | &best_neigh_node)) | |
30d3c511 SE |
344 | batadv_update_route(bat_priv, orig_node, |
345 | best_neigh_node); | |
c6c8fea2 SE |
346 | } |
347 | ||
348 | return false; | |
349 | } | |
350 | ||
56303d34 | 351 | static void _batadv_purge_orig(struct batadv_priv *bat_priv) |
c6c8fea2 | 352 | { |
5bf74e9c | 353 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 354 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 355 | struct hlist_head *head; |
fb778ea1 | 356 | spinlock_t *list_lock; /* spinlock to protect write access */ |
56303d34 | 357 | struct batadv_orig_node *orig_node; |
c90681b8 | 358 | uint32_t i; |
c6c8fea2 SE |
359 | |
360 | if (!hash) | |
361 | return; | |
362 | ||
c6c8fea2 SE |
363 | /* for all origins... */ |
364 | for (i = 0; i < hash->size; i++) { | |
365 | head = &hash->table[i]; | |
fb778ea1 | 366 | list_lock = &hash->list_locks[i]; |
c6c8fea2 | 367 | |
fb778ea1 | 368 | spin_lock_bh(list_lock); |
7aadf889 ML |
369 | hlist_for_each_entry_safe(orig_node, node, node_tmp, |
370 | head, hash_entry) { | |
03fc7f86 | 371 | if (batadv_purge_orig_node(bat_priv, orig_node)) { |
c6c8fea2 | 372 | if (orig_node->gw_flags) |
7cf06bc6 SE |
373 | batadv_gw_node_delete(bat_priv, |
374 | orig_node); | |
7aadf889 | 375 | hlist_del_rcu(node); |
7d211efc | 376 | batadv_orig_node_free_ref(orig_node); |
fb778ea1 | 377 | continue; |
c6c8fea2 SE |
378 | } |
379 | ||
1eda58bf | 380 | if (batadv_has_timed_out(orig_node->last_frag_packet, |
4d5d2db8 | 381 | BATADV_FRAG_TIMEOUT)) |
88ed1e77 | 382 | batadv_frag_list_free(&orig_node->frag_list); |
c6c8fea2 | 383 | } |
fb778ea1 | 384 | spin_unlock_bh(list_lock); |
c6c8fea2 SE |
385 | } |
386 | ||
7cf06bc6 SE |
387 | batadv_gw_node_purge(bat_priv); |
388 | batadv_gw_election(bat_priv); | |
c6c8fea2 SE |
389 | } |
390 | ||
03fc7f86 | 391 | static void batadv_purge_orig(struct work_struct *work) |
c6c8fea2 | 392 | { |
56303d34 SE |
393 | struct delayed_work *delayed_work; |
394 | struct batadv_priv *bat_priv; | |
c6c8fea2 | 395 | |
56303d34 SE |
396 | delayed_work = container_of(work, struct delayed_work, work); |
397 | bat_priv = container_of(delayed_work, struct batadv_priv, orig_work); | |
03fc7f86 SE |
398 | _batadv_purge_orig(bat_priv); |
399 | batadv_start_purge_timer(bat_priv); | |
c6c8fea2 SE |
400 | } |
401 | ||
56303d34 | 402 | void batadv_purge_orig_ref(struct batadv_priv *bat_priv) |
c6c8fea2 | 403 | { |
03fc7f86 | 404 | _batadv_purge_orig(bat_priv); |
c6c8fea2 SE |
405 | } |
406 | ||
7d211efc | 407 | int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) |
c6c8fea2 SE |
408 | { |
409 | struct net_device *net_dev = (struct net_device *)seq->private; | |
56303d34 | 410 | struct batadv_priv *bat_priv = netdev_priv(net_dev); |
5bf74e9c | 411 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 412 | struct hlist_node *node, *node_tmp; |
c6c8fea2 | 413 | struct hlist_head *head; |
56303d34 SE |
414 | struct batadv_hard_iface *primary_if; |
415 | struct batadv_orig_node *orig_node; | |
416 | struct batadv_neigh_node *neigh_node, *neigh_node_tmp; | |
c6c8fea2 SE |
417 | int batman_count = 0; |
418 | int last_seen_secs; | |
419 | int last_seen_msecs; | |
0aca2369 | 420 | unsigned long last_seen_jiffies; |
c90681b8 | 421 | uint32_t i; |
32ae9b22 | 422 | |
30da63a6 ML |
423 | primary_if = batadv_seq_print_text_primary_if_get(seq); |
424 | if (!primary_if) | |
32ae9b22 | 425 | goto out; |
c6c8fea2 | 426 | |
44c4349a | 427 | seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n", |
42d0b044 | 428 | BATADV_SOURCE_VERSION, primary_if->net_dev->name, |
32ae9b22 | 429 | primary_if->net_dev->dev_addr, net_dev->name); |
c6c8fea2 | 430 | seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n", |
42d0b044 SE |
431 | "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE, |
432 | "Nexthop", "outgoingIF", "Potential nexthops"); | |
c6c8fea2 | 433 | |
c6c8fea2 SE |
434 | for (i = 0; i < hash->size; i++) { |
435 | head = &hash->table[i]; | |
436 | ||
fb778ea1 | 437 | rcu_read_lock(); |
7aadf889 | 438 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
7d211efc | 439 | neigh_node = batadv_orig_node_get_router(orig_node); |
e1a5382f | 440 | if (!neigh_node) |
c6c8fea2 SE |
441 | continue; |
442 | ||
e1a5382f LL |
443 | if (neigh_node->tq_avg == 0) |
444 | goto next; | |
c6c8fea2 | 445 | |
0aca2369 SE |
446 | last_seen_jiffies = jiffies - orig_node->last_seen; |
447 | last_seen_msecs = jiffies_to_msecs(last_seen_jiffies); | |
448 | last_seen_secs = last_seen_msecs / 1000; | |
449 | last_seen_msecs = last_seen_msecs % 1000; | |
c6c8fea2 | 450 | |
c6c8fea2 SE |
451 | seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:", |
452 | orig_node->orig, last_seen_secs, | |
453 | last_seen_msecs, neigh_node->tq_avg, | |
454 | neigh_node->addr, | |
455 | neigh_node->if_incoming->net_dev->name); | |
456 | ||
e1a5382f | 457 | hlist_for_each_entry_rcu(neigh_node_tmp, node_tmp, |
f987ed6e | 458 | &orig_node->neigh_list, list) { |
e1a5382f LL |
459 | seq_printf(seq, " %pM (%3i)", |
460 | neigh_node_tmp->addr, | |
461 | neigh_node_tmp->tq_avg); | |
c6c8fea2 SE |
462 | } |
463 | ||
464 | seq_printf(seq, "\n"); | |
465 | batman_count++; | |
e1a5382f LL |
466 | |
467 | next: | |
7d211efc | 468 | batadv_neigh_node_free_ref(neigh_node); |
c6c8fea2 | 469 | } |
fb778ea1 | 470 | rcu_read_unlock(); |
c6c8fea2 SE |
471 | } |
472 | ||
e1a5382f | 473 | if (batman_count == 0) |
c6c8fea2 SE |
474 | seq_printf(seq, "No batman nodes in range ...\n"); |
475 | ||
32ae9b22 ML |
476 | out: |
477 | if (primary_if) | |
e5d89254 | 478 | batadv_hardif_free_ref(primary_if); |
30da63a6 | 479 | return 0; |
c6c8fea2 SE |
480 | } |
481 | ||
56303d34 SE |
482 | static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node, |
483 | int max_if_num) | |
c6c8fea2 SE |
484 | { |
485 | void *data_ptr; | |
42d0b044 | 486 | size_t data_size, old_size; |
c6c8fea2 | 487 | |
42d0b044 SE |
488 | data_size = max_if_num * sizeof(unsigned long) * BATADV_NUM_WORDS; |
489 | old_size = (max_if_num - 1) * sizeof(unsigned long) * BATADV_NUM_WORDS; | |
490 | data_ptr = kmalloc(data_size, GFP_ATOMIC); | |
320f422f | 491 | if (!data_ptr) |
5346c35e | 492 | return -ENOMEM; |
c6c8fea2 | 493 | |
42d0b044 | 494 | memcpy(data_ptr, orig_node->bcast_own, old_size); |
c6c8fea2 SE |
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) |
5346c35e | 500 | return -ENOMEM; |
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 | ||
56303d34 SE |
510 | int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, |
511 | int max_if_num) | |
c6c8fea2 | 512 | { |
56303d34 | 513 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 514 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 515 | struct hlist_node *node; |
c6c8fea2 | 516 | struct hlist_head *head; |
56303d34 | 517 | struct batadv_orig_node *orig_node; |
c90681b8 AQ |
518 | uint32_t i; |
519 | int ret; | |
c6c8fea2 SE |
520 | |
521 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
522 | * if_num |
523 | */ | |
c6c8fea2 SE |
524 | for (i = 0; i < hash->size; i++) { |
525 | head = &hash->table[i]; | |
526 | ||
fb778ea1 | 527 | rcu_read_lock(); |
7aadf889 | 528 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 529 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 | 530 | ret = batadv_orig_node_add_if(orig_node, max_if_num); |
2ae2daf6 ML |
531 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
532 | ||
5346c35e | 533 | if (ret == -ENOMEM) |
c6c8fea2 SE |
534 | goto err; |
535 | } | |
fb778ea1 | 536 | rcu_read_unlock(); |
c6c8fea2 SE |
537 | } |
538 | ||
c6c8fea2 SE |
539 | return 0; |
540 | ||
541 | err: | |
fb778ea1 | 542 | rcu_read_unlock(); |
c6c8fea2 SE |
543 | return -ENOMEM; |
544 | } | |
545 | ||
56303d34 | 546 | static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node, |
03fc7f86 | 547 | int max_if_num, int del_if_num) |
c6c8fea2 SE |
548 | { |
549 | void *data_ptr = NULL; | |
550 | int chunk_size; | |
551 | ||
552 | /* last interface was removed */ | |
553 | if (max_if_num == 0) | |
554 | goto free_bcast_own; | |
555 | ||
42d0b044 | 556 | chunk_size = sizeof(unsigned long) * BATADV_NUM_WORDS; |
c6c8fea2 | 557 | data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC); |
320f422f | 558 | if (!data_ptr) |
5346c35e | 559 | return -ENOMEM; |
c6c8fea2 SE |
560 | |
561 | /* copy first part */ | |
562 | memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size); | |
563 | ||
564 | /* copy second part */ | |
38e3c5f0 | 565 | memcpy((char *)data_ptr + del_if_num * chunk_size, |
c6c8fea2 SE |
566 | orig_node->bcast_own + ((del_if_num + 1) * chunk_size), |
567 | (max_if_num - del_if_num) * chunk_size); | |
568 | ||
569 | free_bcast_own: | |
570 | kfree(orig_node->bcast_own); | |
571 | orig_node->bcast_own = data_ptr; | |
572 | ||
573 | if (max_if_num == 0) | |
574 | goto free_own_sum; | |
575 | ||
576 | data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC); | |
320f422f | 577 | if (!data_ptr) |
5346c35e | 578 | return -ENOMEM; |
c6c8fea2 SE |
579 | |
580 | memcpy(data_ptr, orig_node->bcast_own_sum, | |
581 | del_if_num * sizeof(uint8_t)); | |
582 | ||
38e3c5f0 | 583 | memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t), |
c6c8fea2 SE |
584 | orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)), |
585 | (max_if_num - del_if_num) * sizeof(uint8_t)); | |
586 | ||
587 | free_own_sum: | |
588 | kfree(orig_node->bcast_own_sum); | |
589 | orig_node->bcast_own_sum = data_ptr; | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
56303d34 SE |
594 | int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, |
595 | int max_if_num) | |
c6c8fea2 | 596 | { |
56303d34 | 597 | struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); |
5bf74e9c | 598 | struct batadv_hashtable *hash = bat_priv->orig_hash; |
7aadf889 | 599 | struct hlist_node *node; |
c6c8fea2 | 600 | struct hlist_head *head; |
56303d34 SE |
601 | struct batadv_hard_iface *hard_iface_tmp; |
602 | struct batadv_orig_node *orig_node; | |
c90681b8 AQ |
603 | uint32_t i; |
604 | int ret; | |
c6c8fea2 SE |
605 | |
606 | /* resize all orig nodes because orig_node->bcast_own(_sum) depend on | |
9cfc7bd6 SE |
607 | * if_num |
608 | */ | |
c6c8fea2 SE |
609 | for (i = 0; i < hash->size; i++) { |
610 | head = &hash->table[i]; | |
611 | ||
fb778ea1 | 612 | rcu_read_lock(); |
7aadf889 | 613 | hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) { |
2ae2daf6 | 614 | spin_lock_bh(&orig_node->ogm_cnt_lock); |
03fc7f86 SE |
615 | ret = batadv_orig_node_del_if(orig_node, max_if_num, |
616 | hard_iface->if_num); | |
2ae2daf6 | 617 | spin_unlock_bh(&orig_node->ogm_cnt_lock); |
c6c8fea2 | 618 | |
5346c35e | 619 | if (ret == -ENOMEM) |
c6c8fea2 SE |
620 | goto err; |
621 | } | |
fb778ea1 | 622 | rcu_read_unlock(); |
c6c8fea2 SE |
623 | } |
624 | ||
625 | /* renumber remaining batman interfaces _inside_ of orig_hash_lock */ | |
626 | rcu_read_lock(); | |
3193e8fd | 627 | list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) { |
e9a4f295 | 628 | if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE) |
c6c8fea2 SE |
629 | continue; |
630 | ||
e6c10f43 | 631 | if (hard_iface == hard_iface_tmp) |
c6c8fea2 SE |
632 | continue; |
633 | ||
e6c10f43 | 634 | if (hard_iface->soft_iface != hard_iface_tmp->soft_iface) |
c6c8fea2 SE |
635 | continue; |
636 | ||
e6c10f43 ML |
637 | if (hard_iface_tmp->if_num > hard_iface->if_num) |
638 | hard_iface_tmp->if_num--; | |
c6c8fea2 SE |
639 | } |
640 | rcu_read_unlock(); | |
641 | ||
e6c10f43 | 642 | hard_iface->if_num = -1; |
c6c8fea2 SE |
643 | return 0; |
644 | ||
645 | err: | |
fb778ea1 | 646 | rcu_read_unlock(); |
c6c8fea2 SE |
647 | return -ENOMEM; |
648 | } |