1 /* Copyright (C) 2009-2013 B.A.T.M.A.N. contributors:
3 * Marek Lindner, Simon Wunderlich
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.
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.
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
21 #include "distributed-arp-table.h"
22 #include "originator.h"
24 #include "translation-table.h"
26 #include "gateway_client.h"
27 #include "hard-interface.h"
28 #include "soft-interface.h"
29 #include "bridge_loop_avoidance.h"
30 #include "network-coding.h"
31 #include "fragmentation.h"
34 static struct lock_class_key batadv_orig_hash_lock_class_key
;
36 static void batadv_purge_orig(struct work_struct
*work
);
38 /* returns 1 if they are the same originator */
39 static int batadv_compare_orig(const struct hlist_node
*node
, const void *data2
)
41 const void *data1
= container_of(node
, struct batadv_orig_node
,
44 return (memcmp(data1
, data2
, ETH_ALEN
) == 0 ? 1 : 0);
48 * batadv_orig_node_vlan_get - get an orig_node_vlan object
49 * @orig_node: the originator serving the VLAN
50 * @vid: the VLAN identifier
52 * Returns the vlan object identified by vid and belonging to orig_node or NULL
53 * if it does not exist.
55 struct batadv_orig_node_vlan
*
56 batadv_orig_node_vlan_get(struct batadv_orig_node
*orig_node
,
59 struct batadv_orig_node_vlan
*vlan
= NULL
, *tmp
;
62 list_for_each_entry_rcu(tmp
, &orig_node
->vlan_list
, list
) {
66 if (!atomic_inc_not_zero(&tmp
->refcount
))
79 * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan
81 * @orig_node: the originator serving the VLAN
82 * @vid: the VLAN identifier
84 * Returns NULL in case of failure or the vlan object identified by vid and
85 * belonging to orig_node otherwise. The object is created and added to the list
86 * if it does not exist.
88 * The object is returned with refcounter increased by 1.
90 struct batadv_orig_node_vlan
*
91 batadv_orig_node_vlan_new(struct batadv_orig_node
*orig_node
,
94 struct batadv_orig_node_vlan
*vlan
;
96 spin_lock_bh(&orig_node
->vlan_list_lock
);
98 /* first look if an object for this vid already exists */
99 vlan
= batadv_orig_node_vlan_get(orig_node
, vid
);
103 vlan
= kzalloc(sizeof(*vlan
), GFP_ATOMIC
);
107 atomic_set(&vlan
->refcount
, 2);
110 list_add_rcu(&vlan
->list
, &orig_node
->vlan_list
);
113 spin_unlock_bh(&orig_node
->vlan_list_lock
);
119 * batadv_orig_node_vlan_free_ref - decrement the refcounter and possibly free
120 * the originator-vlan object
121 * @orig_vlan: the originator-vlan object to release
123 void batadv_orig_node_vlan_free_ref(struct batadv_orig_node_vlan
*orig_vlan
)
125 if (atomic_dec_and_test(&orig_vlan
->refcount
))
126 kfree_rcu(orig_vlan
, rcu
);
129 int batadv_originator_init(struct batadv_priv
*bat_priv
)
131 if (bat_priv
->orig_hash
)
134 bat_priv
->orig_hash
= batadv_hash_new(1024);
136 if (!bat_priv
->orig_hash
)
139 batadv_hash_set_lock_class(bat_priv
->orig_hash
,
140 &batadv_orig_hash_lock_class_key
);
142 INIT_DELAYED_WORK(&bat_priv
->orig_work
, batadv_purge_orig
);
143 queue_delayed_work(batadv_event_workqueue
,
144 &bat_priv
->orig_work
,
145 msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD
));
153 void batadv_neigh_node_free_ref(struct batadv_neigh_node
*neigh_node
)
155 if (atomic_dec_and_test(&neigh_node
->refcount
))
156 kfree_rcu(neigh_node
, rcu
);
159 /* increases the refcounter of a found router */
160 struct batadv_neigh_node
*
161 batadv_orig_node_get_router(struct batadv_orig_node
*orig_node
)
163 struct batadv_neigh_node
*router
;
166 router
= rcu_dereference(orig_node
->router
);
168 if (router
&& !atomic_inc_not_zero(&router
->refcount
))
175 struct batadv_neigh_node
*
176 batadv_neigh_node_new(struct batadv_hard_iface
*hard_iface
,
177 const uint8_t *neigh_addr
)
179 struct batadv_priv
*bat_priv
= netdev_priv(hard_iface
->soft_iface
);
180 struct batadv_neigh_node
*neigh_node
;
182 neigh_node
= kzalloc(sizeof(*neigh_node
), GFP_ATOMIC
);
186 INIT_HLIST_NODE(&neigh_node
->list
);
188 memcpy(neigh_node
->addr
, neigh_addr
, ETH_ALEN
);
189 spin_lock_init(&neigh_node
->lq_update_lock
);
191 /* extra reference for return */
192 atomic_set(&neigh_node
->refcount
, 2);
194 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
195 "Creating new neighbor %pM on interface %s\n", neigh_addr
,
196 hard_iface
->net_dev
->name
);
202 static void batadv_orig_node_free_rcu(struct rcu_head
*rcu
)
204 struct hlist_node
*node_tmp
;
205 struct batadv_neigh_node
*neigh_node
, *tmp_neigh_node
;
206 struct batadv_orig_node
*orig_node
;
208 orig_node
= container_of(rcu
, struct batadv_orig_node
, rcu
);
210 spin_lock_bh(&orig_node
->neigh_list_lock
);
212 /* for all bonding members ... */
213 list_for_each_entry_safe(neigh_node
, tmp_neigh_node
,
214 &orig_node
->bond_list
, bonding_list
) {
215 list_del_rcu(&neigh_node
->bonding_list
);
216 batadv_neigh_node_free_ref(neigh_node
);
219 /* for all neighbors towards this originator ... */
220 hlist_for_each_entry_safe(neigh_node
, node_tmp
,
221 &orig_node
->neigh_list
, list
) {
222 hlist_del_rcu(&neigh_node
->list
);
223 batadv_neigh_node_free_ref(neigh_node
);
226 spin_unlock_bh(&orig_node
->neigh_list_lock
);
229 batadv_nc_purge_orig(orig_node
->bat_priv
, orig_node
, NULL
);
231 batadv_frag_purge_orig(orig_node
, NULL
);
233 batadv_tt_global_del_orig(orig_node
->bat_priv
, orig_node
,
234 "originator timed out");
236 kfree(orig_node
->tt_buff
);
237 kfree(orig_node
->bcast_own
);
238 kfree(orig_node
->bcast_own_sum
);
243 * batadv_orig_node_free_ref - decrement the orig node refcounter and possibly
244 * schedule an rcu callback for freeing it
245 * @orig_node: the orig node to free
247 void batadv_orig_node_free_ref(struct batadv_orig_node
*orig_node
)
249 if (atomic_dec_and_test(&orig_node
->refcount
))
250 call_rcu(&orig_node
->rcu
, batadv_orig_node_free_rcu
);
254 * batadv_orig_node_free_ref_now - decrement the orig node refcounter and
255 * possibly free it (without rcu callback)
256 * @orig_node: the orig node to free
258 void batadv_orig_node_free_ref_now(struct batadv_orig_node
*orig_node
)
260 if (atomic_dec_and_test(&orig_node
->refcount
))
261 batadv_orig_node_free_rcu(&orig_node
->rcu
);
264 void batadv_originator_free(struct batadv_priv
*bat_priv
)
266 struct batadv_hashtable
*hash
= bat_priv
->orig_hash
;
267 struct hlist_node
*node_tmp
;
268 struct hlist_head
*head
;
269 spinlock_t
*list_lock
; /* spinlock to protect write access */
270 struct batadv_orig_node
*orig_node
;
276 cancel_delayed_work_sync(&bat_priv
->orig_work
);
278 bat_priv
->orig_hash
= NULL
;
280 for (i
= 0; i
< hash
->size
; i
++) {
281 head
= &hash
->table
[i
];
282 list_lock
= &hash
->list_locks
[i
];
284 spin_lock_bh(list_lock
);
285 hlist_for_each_entry_safe(orig_node
, node_tmp
,
287 hlist_del_rcu(&orig_node
->hash_entry
);
288 batadv_orig_node_free_ref(orig_node
);
290 spin_unlock_bh(list_lock
);
293 batadv_hash_destroy(hash
);
296 /* this function finds or creates an originator entry for the given
297 * address if it does not exits
299 struct batadv_orig_node
*batadv_get_orig_node(struct batadv_priv
*bat_priv
,
302 struct batadv_orig_node
*orig_node
;
303 struct batadv_orig_node_vlan
*vlan
;
306 unsigned long reset_time
;
308 orig_node
= batadv_orig_hash_find(bat_priv
, addr
);
312 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
313 "Creating new originator: %pM\n", addr
);
315 orig_node
= kzalloc(sizeof(*orig_node
), GFP_ATOMIC
);
319 INIT_HLIST_HEAD(&orig_node
->neigh_list
);
320 INIT_LIST_HEAD(&orig_node
->bond_list
);
321 INIT_LIST_HEAD(&orig_node
->vlan_list
);
322 spin_lock_init(&orig_node
->ogm_cnt_lock
);
323 spin_lock_init(&orig_node
->bcast_seqno_lock
);
324 spin_lock_init(&orig_node
->neigh_list_lock
);
325 spin_lock_init(&orig_node
->tt_buff_lock
);
326 spin_lock_init(&orig_node
->tt_lock
);
327 spin_lock_init(&orig_node
->vlan_list_lock
);
329 batadv_nc_init_orig(orig_node
);
331 /* extra reference for return */
332 atomic_set(&orig_node
->refcount
, 2);
334 orig_node
->tt_initialised
= false;
335 orig_node
->bat_priv
= bat_priv
;
336 memcpy(orig_node
->orig
, addr
, ETH_ALEN
);
337 batadv_dat_init_orig_node_addr(orig_node
);
338 orig_node
->router
= NULL
;
339 atomic_set(&orig_node
->last_ttvn
, 0);
340 orig_node
->tt_buff
= NULL
;
341 orig_node
->tt_buff_len
= 0;
342 reset_time
= jiffies
- 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS
);
343 orig_node
->bcast_seqno_reset
= reset_time
;
344 orig_node
->batman_seqno_reset
= reset_time
;
346 atomic_set(&orig_node
->bond_candidates
, 0);
348 /* create a vlan object for the "untagged" LAN */
349 vlan
= batadv_orig_node_vlan_new(orig_node
, BATADV_NO_FLAGS
);
352 /* batadv_orig_node_vlan_new() increases the refcounter.
353 * Immediately release vlan since it is not needed anymore in this
356 batadv_orig_node_vlan_free_ref(vlan
);
358 size
= bat_priv
->num_ifaces
* sizeof(unsigned long) * BATADV_NUM_WORDS
;
360 orig_node
->bcast_own
= kzalloc(size
, GFP_ATOMIC
);
361 if (!orig_node
->bcast_own
)
364 size
= bat_priv
->num_ifaces
* sizeof(uint8_t);
365 orig_node
->bcast_own_sum
= kzalloc(size
, GFP_ATOMIC
);
367 for (i
= 0; i
< BATADV_FRAG_BUFFER_COUNT
; i
++) {
368 INIT_HLIST_HEAD(&orig_node
->fragments
[i
].head
);
369 spin_lock_init(&orig_node
->fragments
[i
].lock
);
370 orig_node
->fragments
[i
].size
= 0;
373 if (!orig_node
->bcast_own_sum
)
376 hash_added
= batadv_hash_add(bat_priv
->orig_hash
, batadv_compare_orig
,
377 batadv_choose_orig
, orig_node
,
378 &orig_node
->hash_entry
);
380 goto free_bcast_own_sum
;
384 kfree(orig_node
->bcast_own_sum
);
386 kfree(orig_node
->bcast_own
);
388 batadv_orig_node_vlan_free_ref(vlan
);
395 batadv_purge_orig_neighbors(struct batadv_priv
*bat_priv
,
396 struct batadv_orig_node
*orig_node
,
397 struct batadv_neigh_node
**best_neigh_node
)
399 struct hlist_node
*node_tmp
;
400 struct batadv_neigh_node
*neigh_node
;
401 bool neigh_purged
= false;
402 unsigned long last_seen
;
403 struct batadv_hard_iface
*if_incoming
;
405 *best_neigh_node
= NULL
;
407 spin_lock_bh(&orig_node
->neigh_list_lock
);
409 /* for all neighbors towards this originator ... */
410 hlist_for_each_entry_safe(neigh_node
, node_tmp
,
411 &orig_node
->neigh_list
, list
) {
412 last_seen
= neigh_node
->last_seen
;
413 if_incoming
= neigh_node
->if_incoming
;
415 if ((batadv_has_timed_out(last_seen
, BATADV_PURGE_TIMEOUT
)) ||
416 (if_incoming
->if_status
== BATADV_IF_INACTIVE
) ||
417 (if_incoming
->if_status
== BATADV_IF_NOT_IN_USE
) ||
418 (if_incoming
->if_status
== BATADV_IF_TO_BE_REMOVED
)) {
419 if ((if_incoming
->if_status
== BATADV_IF_INACTIVE
) ||
420 (if_incoming
->if_status
== BATADV_IF_NOT_IN_USE
) ||
421 (if_incoming
->if_status
== BATADV_IF_TO_BE_REMOVED
))
422 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
423 "neighbor purge: originator %pM, neighbor: %pM, iface: %s\n",
424 orig_node
->orig
, neigh_node
->addr
,
425 if_incoming
->net_dev
->name
);
427 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
428 "neighbor timeout: originator %pM, neighbor: %pM, last_seen: %u\n",
429 orig_node
->orig
, neigh_node
->addr
,
430 jiffies_to_msecs(last_seen
));
434 hlist_del_rcu(&neigh_node
->list
);
435 batadv_bonding_candidate_del(orig_node
, neigh_node
);
436 batadv_neigh_node_free_ref(neigh_node
);
438 if ((!*best_neigh_node
) ||
439 (neigh_node
->tq_avg
> (*best_neigh_node
)->tq_avg
))
440 *best_neigh_node
= neigh_node
;
444 spin_unlock_bh(&orig_node
->neigh_list_lock
);
448 static bool batadv_purge_orig_node(struct batadv_priv
*bat_priv
,
449 struct batadv_orig_node
*orig_node
)
451 struct batadv_neigh_node
*best_neigh_node
;
453 if (batadv_has_timed_out(orig_node
->last_seen
,
454 2 * BATADV_PURGE_TIMEOUT
)) {
455 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
456 "Originator timeout: originator %pM, last_seen %u\n",
458 jiffies_to_msecs(orig_node
->last_seen
));
461 if (batadv_purge_orig_neighbors(bat_priv
, orig_node
,
463 batadv_update_route(bat_priv
, orig_node
,
470 static void _batadv_purge_orig(struct batadv_priv
*bat_priv
)
472 struct batadv_hashtable
*hash
= bat_priv
->orig_hash
;
473 struct hlist_node
*node_tmp
;
474 struct hlist_head
*head
;
475 spinlock_t
*list_lock
; /* spinlock to protect write access */
476 struct batadv_orig_node
*orig_node
;
482 /* for all origins... */
483 for (i
= 0; i
< hash
->size
; i
++) {
484 head
= &hash
->table
[i
];
485 list_lock
= &hash
->list_locks
[i
];
487 spin_lock_bh(list_lock
);
488 hlist_for_each_entry_safe(orig_node
, node_tmp
,
490 if (batadv_purge_orig_node(bat_priv
, orig_node
)) {
491 batadv_gw_node_delete(bat_priv
, orig_node
);
492 hlist_del_rcu(&orig_node
->hash_entry
);
493 batadv_orig_node_free_ref(orig_node
);
497 batadv_frag_purge_orig(orig_node
,
498 batadv_frag_check_entry
);
500 spin_unlock_bh(list_lock
);
503 batadv_gw_node_purge(bat_priv
);
504 batadv_gw_election(bat_priv
);
507 static void batadv_purge_orig(struct work_struct
*work
)
509 struct delayed_work
*delayed_work
;
510 struct batadv_priv
*bat_priv
;
512 delayed_work
= container_of(work
, struct delayed_work
, work
);
513 bat_priv
= container_of(delayed_work
, struct batadv_priv
, orig_work
);
514 _batadv_purge_orig(bat_priv
);
515 queue_delayed_work(batadv_event_workqueue
,
516 &bat_priv
->orig_work
,
517 msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD
));
520 void batadv_purge_orig_ref(struct batadv_priv
*bat_priv
)
522 _batadv_purge_orig(bat_priv
);
525 int batadv_orig_seq_print_text(struct seq_file
*seq
, void *offset
)
527 struct net_device
*net_dev
= (struct net_device
*)seq
->private;
528 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
529 struct batadv_hashtable
*hash
= bat_priv
->orig_hash
;
530 struct hlist_head
*head
;
531 struct batadv_hard_iface
*primary_if
;
532 struct batadv_orig_node
*orig_node
;
533 struct batadv_neigh_node
*neigh_node
, *neigh_node_tmp
;
534 int batman_count
= 0;
537 unsigned long last_seen_jiffies
;
540 primary_if
= batadv_seq_print_text_primary_if_get(seq
);
544 seq_printf(seq
, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n",
545 BATADV_SOURCE_VERSION
, primary_if
->net_dev
->name
,
546 primary_if
->net_dev
->dev_addr
, net_dev
->name
);
547 seq_printf(seq
, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
548 "Originator", "last-seen", "#", BATADV_TQ_MAX_VALUE
,
549 "Nexthop", "outgoingIF", "Potential nexthops");
551 for (i
= 0; i
< hash
->size
; i
++) {
552 head
= &hash
->table
[i
];
555 hlist_for_each_entry_rcu(orig_node
, head
, hash_entry
) {
556 neigh_node
= batadv_orig_node_get_router(orig_node
);
560 if (neigh_node
->tq_avg
== 0)
563 last_seen_jiffies
= jiffies
- orig_node
->last_seen
;
564 last_seen_msecs
= jiffies_to_msecs(last_seen_jiffies
);
565 last_seen_secs
= last_seen_msecs
/ 1000;
566 last_seen_msecs
= last_seen_msecs
% 1000;
568 seq_printf(seq
, "%pM %4i.%03is (%3i) %pM [%10s]:",
569 orig_node
->orig
, last_seen_secs
,
570 last_seen_msecs
, neigh_node
->tq_avg
,
572 neigh_node
->if_incoming
->net_dev
->name
);
574 hlist_for_each_entry_rcu(neigh_node_tmp
,
575 &orig_node
->neigh_list
, list
) {
576 seq_printf(seq
, " %pM (%3i)",
577 neigh_node_tmp
->addr
,
578 neigh_node_tmp
->tq_avg
);
585 batadv_neigh_node_free_ref(neigh_node
);
590 if (batman_count
== 0)
591 seq_puts(seq
, "No batman nodes in range ...\n");
595 batadv_hardif_free_ref(primary_if
);
599 static int batadv_orig_node_add_if(struct batadv_orig_node
*orig_node
,
603 size_t data_size
, old_size
;
605 data_size
= max_if_num
* sizeof(unsigned long) * BATADV_NUM_WORDS
;
606 old_size
= (max_if_num
- 1) * sizeof(unsigned long) * BATADV_NUM_WORDS
;
607 data_ptr
= kmalloc(data_size
, GFP_ATOMIC
);
611 memcpy(data_ptr
, orig_node
->bcast_own
, old_size
);
612 kfree(orig_node
->bcast_own
);
613 orig_node
->bcast_own
= data_ptr
;
615 data_ptr
= kmalloc(max_if_num
* sizeof(uint8_t), GFP_ATOMIC
);
619 memcpy(data_ptr
, orig_node
->bcast_own_sum
,
620 (max_if_num
- 1) * sizeof(uint8_t));
621 kfree(orig_node
->bcast_own_sum
);
622 orig_node
->bcast_own_sum
= data_ptr
;
627 int batadv_orig_hash_add_if(struct batadv_hard_iface
*hard_iface
,
630 struct batadv_priv
*bat_priv
= netdev_priv(hard_iface
->soft_iface
);
631 struct batadv_hashtable
*hash
= bat_priv
->orig_hash
;
632 struct hlist_head
*head
;
633 struct batadv_orig_node
*orig_node
;
637 /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
640 for (i
= 0; i
< hash
->size
; i
++) {
641 head
= &hash
->table
[i
];
644 hlist_for_each_entry_rcu(orig_node
, head
, hash_entry
) {
645 spin_lock_bh(&orig_node
->ogm_cnt_lock
);
646 ret
= batadv_orig_node_add_if(orig_node
, max_if_num
);
647 spin_unlock_bh(&orig_node
->ogm_cnt_lock
);
662 static int batadv_orig_node_del_if(struct batadv_orig_node
*orig_node
,
663 int max_if_num
, int del_if_num
)
665 void *data_ptr
= NULL
;
668 /* last interface was removed */
672 chunk_size
= sizeof(unsigned long) * BATADV_NUM_WORDS
;
673 data_ptr
= kmalloc(max_if_num
* chunk_size
, GFP_ATOMIC
);
677 /* copy first part */
678 memcpy(data_ptr
, orig_node
->bcast_own
, del_if_num
* chunk_size
);
680 /* copy second part */
681 memcpy((char *)data_ptr
+ del_if_num
* chunk_size
,
682 orig_node
->bcast_own
+ ((del_if_num
+ 1) * chunk_size
),
683 (max_if_num
- del_if_num
) * chunk_size
);
686 kfree(orig_node
->bcast_own
);
687 orig_node
->bcast_own
= data_ptr
;
692 data_ptr
= kmalloc(max_if_num
* sizeof(uint8_t), GFP_ATOMIC
);
696 memcpy(data_ptr
, orig_node
->bcast_own_sum
,
697 del_if_num
* sizeof(uint8_t));
699 memcpy((char *)data_ptr
+ del_if_num
* sizeof(uint8_t),
700 orig_node
->bcast_own_sum
+ ((del_if_num
+ 1) * sizeof(uint8_t)),
701 (max_if_num
- del_if_num
) * sizeof(uint8_t));
704 kfree(orig_node
->bcast_own_sum
);
705 orig_node
->bcast_own_sum
= data_ptr
;
710 int batadv_orig_hash_del_if(struct batadv_hard_iface
*hard_iface
,
713 struct batadv_priv
*bat_priv
= netdev_priv(hard_iface
->soft_iface
);
714 struct batadv_hashtable
*hash
= bat_priv
->orig_hash
;
715 struct hlist_head
*head
;
716 struct batadv_hard_iface
*hard_iface_tmp
;
717 struct batadv_orig_node
*orig_node
;
721 /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
724 for (i
= 0; i
< hash
->size
; i
++) {
725 head
= &hash
->table
[i
];
728 hlist_for_each_entry_rcu(orig_node
, head
, hash_entry
) {
729 spin_lock_bh(&orig_node
->ogm_cnt_lock
);
730 ret
= batadv_orig_node_del_if(orig_node
, max_if_num
,
732 spin_unlock_bh(&orig_node
->ogm_cnt_lock
);
740 /* renumber remaining batman interfaces _inside_ of orig_hash_lock */
742 list_for_each_entry_rcu(hard_iface_tmp
, &batadv_hardif_list
, list
) {
743 if (hard_iface_tmp
->if_status
== BATADV_IF_NOT_IN_USE
)
746 if (hard_iface
== hard_iface_tmp
)
749 if (hard_iface
->soft_iface
!= hard_iface_tmp
->soft_iface
)
752 if (hard_iface_tmp
->if_num
> hard_iface
->if_num
)
753 hard_iface_tmp
->if_num
--;
757 hard_iface
->if_num
= -1;