1 /* Copyright (C) 2011-2013 B.A.T.M.A.N. contributors:
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
22 #include "hard-interface.h"
23 #include "originator.h"
24 #include "bridge_loop_avoidance.h"
25 #include "translation-table.h"
28 #include <linux/etherdevice.h>
29 #include <linux/crc16.h>
30 #include <linux/if_arp.h>
32 #include <linux/if_vlan.h>
34 static const uint8_t batadv_announce_mac[4] = {0x43, 0x05, 0x43, 0x05};
36 static void batadv_bla_periodic_work(struct work_struct *work);
38 batadv_bla_send_announce(struct batadv_priv *bat_priv,
39 struct batadv_bla_backbone_gw *backbone_gw);
41 /* return the index of the claim */
42 static inline uint32_t batadv_choose_claim(const void *data, uint32_t size)
44 struct batadv_bla_claim *claim = (struct batadv_bla_claim *)data;
47 hash = batadv_hash_bytes(hash, &claim->addr, sizeof(claim->addr));
48 hash = batadv_hash_bytes(hash, &claim->vid, sizeof(claim->vid));
57 /* return the index of the backbone gateway */
58 static inline uint32_t batadv_choose_backbone_gw(const void *data,
61 const struct batadv_bla_claim *claim = (struct batadv_bla_claim *)data;
64 hash = batadv_hash_bytes(hash, &claim->addr, sizeof(claim->addr));
65 hash = batadv_hash_bytes(hash, &claim->vid, sizeof(claim->vid));
75 /* compares address and vid of two backbone gws */
76 static int batadv_compare_backbone_gw(const struct hlist_node *node,
79 const void *data1 = container_of(node, struct batadv_bla_backbone_gw,
81 const struct batadv_bla_backbone_gw *gw1 = data1, *gw2 = data2;
83 if (!batadv_compare_eth(gw1->orig, gw2->orig))
86 if (gw1->vid != gw2->vid)
92 /* compares address and vid of two claims */
93 static int batadv_compare_claim(const struct hlist_node *node,
96 const void *data1 = container_of(node, struct batadv_bla_claim,
98 const struct batadv_bla_claim *cl1 = data1, *cl2 = data2;
100 if (!batadv_compare_eth(cl1->addr, cl2->addr))
103 if (cl1->vid != cl2->vid)
109 /* free a backbone gw */
111 batadv_backbone_gw_free_ref(struct batadv_bla_backbone_gw *backbone_gw)
113 if (atomic_dec_and_test(&backbone_gw->refcount))
114 kfree_rcu(backbone_gw, rcu);
117 /* finally deinitialize the claim */
118 static void batadv_claim_free_rcu(struct rcu_head *rcu)
120 struct batadv_bla_claim *claim;
122 claim = container_of(rcu, struct batadv_bla_claim, rcu);
124 batadv_backbone_gw_free_ref(claim->backbone_gw);
128 /* free a claim, call claim_free_rcu if its the last reference */
129 static void batadv_claim_free_ref(struct batadv_bla_claim *claim)
131 if (atomic_dec_and_test(&claim->refcount))
132 call_rcu(&claim->rcu, batadv_claim_free_rcu);
135 /* @bat_priv: the bat priv with all the soft interface information
136 * @data: search data (may be local/static data)
138 * looks for a claim in the hash, and returns it if found
141 static struct batadv_bla_claim
142 *batadv_claim_hash_find(struct batadv_priv *bat_priv,
143 struct batadv_bla_claim *data)
145 struct batadv_hashtable *hash = bat_priv->bla.claim_hash;
146 struct hlist_head *head;
147 struct batadv_bla_claim *claim;
148 struct batadv_bla_claim *claim_tmp = NULL;
154 index = batadv_choose_claim(data, hash->size);
155 head = &hash->table[index];
158 hlist_for_each_entry_rcu(claim, head, hash_entry) {
159 if (!batadv_compare_claim(&claim->hash_entry, data))
162 if (!atomic_inc_not_zero(&claim->refcount))
174 * batadv_backbone_hash_find - looks for a claim in the hash
175 * @bat_priv: the bat priv with all the soft interface information
176 * @addr: the address of the originator
179 * Returns claim if found or NULL otherwise.
181 static struct batadv_bla_backbone_gw *
182 batadv_backbone_hash_find(struct batadv_priv *bat_priv,
183 uint8_t *addr, short vid)
185 struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
186 struct hlist_head *head;
187 struct batadv_bla_backbone_gw search_entry, *backbone_gw;
188 struct batadv_bla_backbone_gw *backbone_gw_tmp = NULL;
194 memcpy(search_entry.orig, addr, ETH_ALEN);
195 search_entry.vid = vid;
197 index = batadv_choose_backbone_gw(&search_entry, hash->size);
198 head = &hash->table[index];
201 hlist_for_each_entry_rcu(backbone_gw, head, hash_entry) {
202 if (!batadv_compare_backbone_gw(&backbone_gw->hash_entry,
206 if (!atomic_inc_not_zero(&backbone_gw->refcount))
209 backbone_gw_tmp = backbone_gw;
214 return backbone_gw_tmp;
217 /* delete all claims for a backbone */
219 batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw)
221 struct batadv_hashtable *hash;
222 struct hlist_node *node_tmp;
223 struct hlist_head *head;
224 struct batadv_bla_claim *claim;
226 spinlock_t *list_lock; /* protects write access to the hash lists */
228 hash = backbone_gw->bat_priv->bla.claim_hash;
232 for (i = 0; i < hash->size; i++) {
233 head = &hash->table[i];
234 list_lock = &hash->list_locks[i];
236 spin_lock_bh(list_lock);
237 hlist_for_each_entry_safe(claim, node_tmp,
239 if (claim->backbone_gw != backbone_gw)
242 batadv_claim_free_ref(claim);
243 hlist_del_rcu(&claim->hash_entry);
245 spin_unlock_bh(list_lock);
248 /* all claims gone, intialize CRC */
249 backbone_gw->crc = BATADV_BLA_CRC_INIT;
253 * batadv_bla_send_claim - sends a claim frame according to the provided info
254 * @bat_priv: the bat priv with all the soft interface information
255 * @orig: the mac address to be announced within the claim
257 * @claimtype: the type of the claim (CLAIM, UNCLAIM, ANNOUNCE, ...)
259 static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
260 short vid, int claimtype)
263 struct ethhdr *ethhdr;
264 struct batadv_hard_iface *primary_if;
265 struct net_device *soft_iface;
267 struct batadv_bla_claim_dst local_claim_dest;
270 primary_if = batadv_primary_if_get_selected(bat_priv);
274 memcpy(&local_claim_dest, &bat_priv->bla.claim_dest,
275 sizeof(local_claim_dest));
276 local_claim_dest.type = claimtype;
278 soft_iface = primary_if->soft_iface;
280 skb = arp_create(ARPOP_REPLY, ETH_P_ARP,
281 /* IP DST: 0.0.0.0 */
283 primary_if->soft_iface,
284 /* IP SRC: 0.0.0.0 */
286 /* Ethernet DST: Broadcast */
288 /* Ethernet SRC/HW SRC: originator mac */
289 primary_if->net_dev->dev_addr,
290 /* HW DST: FF:43:05:XX:YY:YY
291 * with XX = claim type
292 * and YY:YY = group id
294 (uint8_t *)&local_claim_dest);
299 ethhdr = (struct ethhdr *)skb->data;
300 hw_src = (uint8_t *)ethhdr + ETH_HLEN + sizeof(struct arphdr);
302 /* now we pretend that the client would have sent this ... */
304 case BATADV_CLAIM_TYPE_CLAIM:
305 /* normal claim frame
306 * set Ethernet SRC to the clients mac
308 memcpy(ethhdr->h_source, mac, ETH_ALEN);
309 batadv_dbg(BATADV_DBG_BLA, bat_priv,
310 "bla_send_claim(): CLAIM %pM on vid %d\n", mac, vid);
312 case BATADV_CLAIM_TYPE_UNCLAIM:
314 * set HW SRC to the clients mac
316 memcpy(hw_src, mac, ETH_ALEN);
317 batadv_dbg(BATADV_DBG_BLA, bat_priv,
318 "bla_send_claim(): UNCLAIM %pM on vid %d\n", mac,
321 case BATADV_CLAIM_TYPE_ANNOUNCE:
322 /* announcement frame
323 * set HW SRC to the special mac containg the crc
325 memcpy(hw_src, mac, ETH_ALEN);
326 batadv_dbg(BATADV_DBG_BLA, bat_priv,
327 "bla_send_claim(): ANNOUNCE of %pM on vid %d\n",
328 ethhdr->h_source, vid);
330 case BATADV_CLAIM_TYPE_REQUEST:
332 * set HW SRC and header destination to the receiving backbone
335 memcpy(hw_src, mac, ETH_ALEN);
336 memcpy(ethhdr->h_dest, mac, ETH_ALEN);
337 batadv_dbg(BATADV_DBG_BLA, bat_priv,
338 "bla_send_claim(): REQUEST of %pM to %pMon vid %d\n",
339 ethhdr->h_source, ethhdr->h_dest, vid);
344 skb = vlan_insert_tag(skb, vid);
346 skb_reset_mac_header(skb);
347 skb->protocol = eth_type_trans(skb, soft_iface);
348 batadv_inc_counter(bat_priv, BATADV_CNT_RX);
349 batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
350 skb->len + ETH_HLEN);
351 soft_iface->last_rx = jiffies;
356 batadv_hardif_free_ref(primary_if);
360 * batadv_bla_get_backbone_gw
361 * @bat_priv: the bat priv with all the soft interface information
362 * @orig: the mac address of the originator
365 * searches for the backbone gw or creates a new one if it could not
368 static struct batadv_bla_backbone_gw *
369 batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, uint8_t *orig,
370 short vid, bool own_backbone)
372 struct batadv_bla_backbone_gw *entry;
373 struct batadv_orig_node *orig_node;
376 entry = batadv_backbone_hash_find(bat_priv, orig, vid);
381 batadv_dbg(BATADV_DBG_BLA, bat_priv,
382 "bla_get_backbone_gw(): not found (%pM, %d), creating new entry\n",
385 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
390 entry->lasttime = jiffies;
391 entry->crc = BATADV_BLA_CRC_INIT;
392 entry->bat_priv = bat_priv;
393 atomic_set(&entry->request_sent, 0);
394 atomic_set(&entry->wait_periods, 0);
395 memcpy(entry->orig, orig, ETH_ALEN);
397 /* one for the hash, one for returning */
398 atomic_set(&entry->refcount, 2);
400 hash_added = batadv_hash_add(bat_priv->bla.backbone_hash,
401 batadv_compare_backbone_gw,
402 batadv_choose_backbone_gw, entry,
405 if (unlikely(hash_added != 0)) {
406 /* hash failed, free the structure */
411 /* this is a gateway now, remove any tt entries */
412 orig_node = batadv_orig_hash_find(bat_priv, orig);
414 batadv_tt_global_del_orig(bat_priv, orig_node,
415 "became a backbone gateway");
416 batadv_orig_node_free_ref(orig_node);
420 batadv_bla_send_announce(bat_priv, entry);
422 /* this will be decreased in the worker thread */
423 atomic_inc(&entry->request_sent);
424 atomic_set(&entry->wait_periods, BATADV_BLA_WAIT_PERIODS);
425 atomic_inc(&bat_priv->bla.num_requests);
431 /* update or add the own backbone gw to make sure we announce
432 * where we receive other backbone gws
435 batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv,
436 struct batadv_hard_iface *primary_if,
439 struct batadv_bla_backbone_gw *backbone_gw;
441 backbone_gw = batadv_bla_get_backbone_gw(bat_priv,
442 primary_if->net_dev->dev_addr,
444 if (unlikely(!backbone_gw))
447 backbone_gw->lasttime = jiffies;
448 batadv_backbone_gw_free_ref(backbone_gw);
451 /* @bat_priv: the bat priv with all the soft interface information
452 * @vid: the vid where the request came on
454 * Repeat all of our own claims, and finally send an ANNOUNCE frame
455 * to allow the requester another check if the CRC is correct now.
457 static void batadv_bla_answer_request(struct batadv_priv *bat_priv,
458 struct batadv_hard_iface *primary_if,
461 struct hlist_head *head;
462 struct batadv_hashtable *hash;
463 struct batadv_bla_claim *claim;
464 struct batadv_bla_backbone_gw *backbone_gw;
467 batadv_dbg(BATADV_DBG_BLA, bat_priv,
468 "bla_answer_request(): received a claim request, send all of our own claims again\n");
470 backbone_gw = batadv_backbone_hash_find(bat_priv,
471 primary_if->net_dev->dev_addr,
476 hash = bat_priv->bla.claim_hash;
477 for (i = 0; i < hash->size; i++) {
478 head = &hash->table[i];
481 hlist_for_each_entry_rcu(claim, head, hash_entry) {
482 /* only own claims are interesting */
483 if (claim->backbone_gw != backbone_gw)
486 batadv_bla_send_claim(bat_priv, claim->addr, claim->vid,
487 BATADV_CLAIM_TYPE_CLAIM);
492 /* finally, send an announcement frame */
493 batadv_bla_send_announce(bat_priv, backbone_gw);
494 batadv_backbone_gw_free_ref(backbone_gw);
497 /* @backbone_gw: the backbone gateway from whom we are out of sync
499 * When the crc is wrong, ask the backbone gateway for a full table update.
500 * After the request, it will repeat all of his own claims and finally
501 * send an announcement claim with which we can check again.
503 static void batadv_bla_send_request(struct batadv_bla_backbone_gw *backbone_gw)
505 /* first, remove all old entries */
506 batadv_bla_del_backbone_claims(backbone_gw);
508 batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
509 "Sending REQUEST to %pM\n", backbone_gw->orig);
512 batadv_bla_send_claim(backbone_gw->bat_priv, backbone_gw->orig,
513 backbone_gw->vid, BATADV_CLAIM_TYPE_REQUEST);
515 /* no local broadcasts should be sent or received, for now. */
516 if (!atomic_read(&backbone_gw->request_sent)) {
517 atomic_inc(&backbone_gw->bat_priv->bla.num_requests);
518 atomic_set(&backbone_gw->request_sent, 1);
522 /* @bat_priv: the bat priv with all the soft interface information
523 * @backbone_gw: our backbone gateway which should be announced
525 * This function sends an announcement. It is called from multiple
528 static void batadv_bla_send_announce(struct batadv_priv *bat_priv,
529 struct batadv_bla_backbone_gw *backbone_gw)
531 uint8_t mac[ETH_ALEN];
534 memcpy(mac, batadv_announce_mac, 4);
535 crc = htons(backbone_gw->crc);
536 memcpy(&mac[4], &crc, 2);
538 batadv_bla_send_claim(bat_priv, mac, backbone_gw->vid,
539 BATADV_CLAIM_TYPE_ANNOUNCE);
543 * batadv_bla_add_claim - Adds a claim in the claim hash
544 * @bat_priv: the bat priv with all the soft interface information
545 * @mac: the mac address of the claim
546 * @vid: the VLAN ID of the frame
547 * @backbone_gw: the backbone gateway which claims it
549 static void batadv_bla_add_claim(struct batadv_priv *bat_priv,
550 const uint8_t *mac, const short vid,
551 struct batadv_bla_backbone_gw *backbone_gw)
553 struct batadv_bla_claim *claim;
554 struct batadv_bla_claim search_claim;
557 memcpy(search_claim.addr, mac, ETH_ALEN);
558 search_claim.vid = vid;
559 claim = batadv_claim_hash_find(bat_priv, &search_claim);
561 /* create a new claim entry if it does not exist yet. */
563 claim = kzalloc(sizeof(*claim), GFP_ATOMIC);
567 memcpy(claim->addr, mac, ETH_ALEN);
569 claim->lasttime = jiffies;
570 claim->backbone_gw = backbone_gw;
572 atomic_set(&claim->refcount, 2);
573 batadv_dbg(BATADV_DBG_BLA, bat_priv,
574 "bla_add_claim(): adding new entry %pM, vid %d to hash ...\n",
576 hash_added = batadv_hash_add(bat_priv->bla.claim_hash,
577 batadv_compare_claim,
578 batadv_choose_claim, claim,
581 if (unlikely(hash_added != 0)) {
582 /* only local changes happened. */
587 claim->lasttime = jiffies;
588 if (claim->backbone_gw == backbone_gw)
589 /* no need to register a new backbone */
592 batadv_dbg(BATADV_DBG_BLA, bat_priv,
593 "bla_add_claim(): changing ownership for %pM, vid %d\n",
596 claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
597 batadv_backbone_gw_free_ref(claim->backbone_gw);
599 /* set (new) backbone gw */
600 atomic_inc(&backbone_gw->refcount);
601 claim->backbone_gw = backbone_gw;
603 backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
604 backbone_gw->lasttime = jiffies;
607 batadv_claim_free_ref(claim);
610 /* Delete a claim from the claim hash which has the
611 * given mac address and vid.
613 static void batadv_bla_del_claim(struct batadv_priv *bat_priv,
614 const uint8_t *mac, const short vid)
616 struct batadv_bla_claim search_claim, *claim;
618 memcpy(search_claim.addr, mac, ETH_ALEN);
619 search_claim.vid = vid;
620 claim = batadv_claim_hash_find(bat_priv, &search_claim);
624 batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla_del_claim(): %pM, vid %d\n",
627 batadv_hash_remove(bat_priv->bla.claim_hash, batadv_compare_claim,
628 batadv_choose_claim, claim);
629 batadv_claim_free_ref(claim); /* reference from the hash is gone */
631 claim->backbone_gw->crc ^= crc16(0, claim->addr, ETH_ALEN);
633 /* don't need the reference from hash_find() anymore */
634 batadv_claim_free_ref(claim);
637 /* check for ANNOUNCE frame, return 1 if handled */
638 static int batadv_handle_announce(struct batadv_priv *bat_priv,
639 uint8_t *an_addr, uint8_t *backbone_addr,
642 struct batadv_bla_backbone_gw *backbone_gw;
645 if (memcmp(an_addr, batadv_announce_mac, 4) != 0)
648 backbone_gw = batadv_bla_get_backbone_gw(bat_priv, backbone_addr, vid,
651 if (unlikely(!backbone_gw))
655 /* handle as ANNOUNCE frame */
656 backbone_gw->lasttime = jiffies;
657 crc = ntohs(*((__be16 *)(&an_addr[4])));
659 batadv_dbg(BATADV_DBG_BLA, bat_priv,
660 "handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %#.4x\n",
661 vid, backbone_gw->orig, crc);
663 if (backbone_gw->crc != crc) {
664 batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
665 "handle_announce(): CRC FAILED for %pM/%d (my = %#.4x, sent = %#.4x)\n",
666 backbone_gw->orig, backbone_gw->vid,
667 backbone_gw->crc, crc);
669 batadv_bla_send_request(backbone_gw);
671 /* if we have sent a request and the crc was OK,
672 * we can allow traffic again.
674 if (atomic_read(&backbone_gw->request_sent)) {
675 atomic_dec(&backbone_gw->bat_priv->bla.num_requests);
676 atomic_set(&backbone_gw->request_sent, 0);
680 batadv_backbone_gw_free_ref(backbone_gw);
684 /* check for REQUEST frame, return 1 if handled */
685 static int batadv_handle_request(struct batadv_priv *bat_priv,
686 struct batadv_hard_iface *primary_if,
687 uint8_t *backbone_addr,
688 struct ethhdr *ethhdr, short vid)
690 /* check for REQUEST frame */
691 if (!batadv_compare_eth(backbone_addr, ethhdr->h_dest))
694 /* sanity check, this should not happen on a normal switch,
695 * we ignore it in this case.
697 if (!batadv_compare_eth(ethhdr->h_dest, primary_if->net_dev->dev_addr))
700 batadv_dbg(BATADV_DBG_BLA, bat_priv,
701 "handle_request(): REQUEST vid %d (sent by %pM)...\n",
702 vid, ethhdr->h_source);
704 batadv_bla_answer_request(bat_priv, primary_if, vid);
708 /* check for UNCLAIM frame, return 1 if handled */
709 static int batadv_handle_unclaim(struct batadv_priv *bat_priv,
710 struct batadv_hard_iface *primary_if,
711 uint8_t *backbone_addr,
712 uint8_t *claim_addr, short vid)
714 struct batadv_bla_backbone_gw *backbone_gw;
716 /* unclaim in any case if it is our own */
717 if (primary_if && batadv_compare_eth(backbone_addr,
718 primary_if->net_dev->dev_addr))
719 batadv_bla_send_claim(bat_priv, claim_addr, vid,
720 BATADV_CLAIM_TYPE_UNCLAIM);
722 backbone_gw = batadv_backbone_hash_find(bat_priv, backbone_addr, vid);
727 /* this must be an UNCLAIM frame */
728 batadv_dbg(BATADV_DBG_BLA, bat_priv,
729 "handle_unclaim(): UNCLAIM %pM on vid %d (sent by %pM)...\n",
730 claim_addr, vid, backbone_gw->orig);
732 batadv_bla_del_claim(bat_priv, claim_addr, vid);
733 batadv_backbone_gw_free_ref(backbone_gw);
737 /* check for CLAIM frame, return 1 if handled */
738 static int batadv_handle_claim(struct batadv_priv *bat_priv,
739 struct batadv_hard_iface *primary_if,
740 uint8_t *backbone_addr, uint8_t *claim_addr,
743 struct batadv_bla_backbone_gw *backbone_gw;
745 /* register the gateway if not yet available, and add the claim. */
747 backbone_gw = batadv_bla_get_backbone_gw(bat_priv, backbone_addr, vid,
750 if (unlikely(!backbone_gw))
753 /* this must be a CLAIM frame */
754 batadv_bla_add_claim(bat_priv, claim_addr, vid, backbone_gw);
755 if (batadv_compare_eth(backbone_addr, primary_if->net_dev->dev_addr))
756 batadv_bla_send_claim(bat_priv, claim_addr, vid,
757 BATADV_CLAIM_TYPE_CLAIM);
759 /* TODO: we could call something like tt_local_del() here. */
761 batadv_backbone_gw_free_ref(backbone_gw);
766 * batadv_check_claim_group
767 * @bat_priv: the bat priv with all the soft interface information
768 * @hw_src: the Hardware source in the ARP Header
769 * @hw_dst: the Hardware destination in the ARP Header
770 * @ethhdr: pointer to the Ethernet header of the claim frame
772 * checks if it is a claim packet and if its on the same group.
773 * This function also applies the group ID of the sender
774 * if it is in the same mesh.
777 * 2 - if it is a claim packet and on the same group
778 * 1 - if is a claim packet from another group
779 * 0 - if it is not a claim packet
781 static int batadv_check_claim_group(struct batadv_priv *bat_priv,
782 struct batadv_hard_iface *primary_if,
783 uint8_t *hw_src, uint8_t *hw_dst,
784 struct ethhdr *ethhdr)
786 uint8_t *backbone_addr;
787 struct batadv_orig_node *orig_node;
788 struct batadv_bla_claim_dst *bla_dst, *bla_dst_own;
790 bla_dst = (struct batadv_bla_claim_dst *)hw_dst;
791 bla_dst_own = &bat_priv->bla.claim_dest;
793 /* check if it is a claim packet in general */
794 if (memcmp(bla_dst->magic, bla_dst_own->magic,
795 sizeof(bla_dst->magic)) != 0)
798 /* if announcement packet, use the source,
799 * otherwise assume it is in the hw_src
801 switch (bla_dst->type) {
802 case BATADV_CLAIM_TYPE_CLAIM:
803 backbone_addr = hw_src;
805 case BATADV_CLAIM_TYPE_REQUEST:
806 case BATADV_CLAIM_TYPE_ANNOUNCE:
807 case BATADV_CLAIM_TYPE_UNCLAIM:
808 backbone_addr = ethhdr->h_source;
814 /* don't accept claim frames from ourselves */
815 if (batadv_compare_eth(backbone_addr, primary_if->net_dev->dev_addr))
818 /* if its already the same group, it is fine. */
819 if (bla_dst->group == bla_dst_own->group)
822 /* lets see if this originator is in our mesh */
823 orig_node = batadv_orig_hash_find(bat_priv, backbone_addr);
825 /* dont accept claims from gateways which are not in
826 * the same mesh or group.
831 /* if our mesh friends mac is bigger, use it for ourselves. */
832 if (ntohs(bla_dst->group) > ntohs(bla_dst_own->group)) {
833 batadv_dbg(BATADV_DBG_BLA, bat_priv,
834 "taking other backbones claim group: %#.4x\n",
835 ntohs(bla_dst->group));
836 bla_dst_own->group = bla_dst->group;
839 batadv_orig_node_free_ref(orig_node);
845 /* @bat_priv: the bat priv with all the soft interface information
846 * @skb: the frame to be checked
848 * Check if this is a claim frame, and process it accordingly.
850 * returns 1 if it was a claim frame, otherwise return 0 to
851 * tell the callee that it can use the frame on its own.
853 static int batadv_bla_process_claim(struct batadv_priv *bat_priv,
854 struct batadv_hard_iface *primary_if,
857 struct ethhdr *ethhdr;
858 struct vlan_ethhdr *vhdr;
859 struct arphdr *arphdr;
860 uint8_t *hw_src, *hw_dst;
861 struct batadv_bla_claim_dst *bla_dst;
867 ethhdr = (struct ethhdr *)skb_mac_header(skb);
869 if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
870 vhdr = (struct vlan_ethhdr *)ethhdr;
871 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
872 proto = ntohs(vhdr->h_vlan_encapsulated_proto);
873 headlen = sizeof(*vhdr);
875 proto = ntohs(ethhdr->h_proto);
879 if (proto != ETH_P_ARP)
880 return 0; /* not a claim frame */
882 /* this must be a ARP frame. check if it is a claim. */
884 if (unlikely(!pskb_may_pull(skb, headlen + arp_hdr_len(skb->dev))))
887 /* pskb_may_pull() may have modified the pointers, get ethhdr again */
888 ethhdr = (struct ethhdr *)skb_mac_header(skb);
889 arphdr = (struct arphdr *)((uint8_t *)ethhdr + headlen);
891 /* Check whether the ARP frame carries a valid
894 if (arphdr->ar_hrd != htons(ARPHRD_ETHER))
896 if (arphdr->ar_pro != htons(ETH_P_IP))
898 if (arphdr->ar_hln != ETH_ALEN)
900 if (arphdr->ar_pln != 4)
903 hw_src = (uint8_t *)arphdr + sizeof(struct arphdr);
904 hw_dst = hw_src + ETH_ALEN + 4;
905 bla_dst = (struct batadv_bla_claim_dst *)hw_dst;
907 /* check if it is a claim frame. */
908 ret = batadv_check_claim_group(bat_priv, primary_if, hw_src, hw_dst,
911 batadv_dbg(BATADV_DBG_BLA, bat_priv,
912 "bla_process_claim(): received a claim frame from another group. From: %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
913 ethhdr->h_source, vid, hw_src, hw_dst);
918 /* become a backbone gw ourselves on this vlan if not happened yet */
919 batadv_bla_update_own_backbone_gw(bat_priv, primary_if, vid);
921 /* check for the different types of claim frames ... */
922 switch (bla_dst->type) {
923 case BATADV_CLAIM_TYPE_CLAIM:
924 if (batadv_handle_claim(bat_priv, primary_if, hw_src,
925 ethhdr->h_source, vid))
928 case BATADV_CLAIM_TYPE_UNCLAIM:
929 if (batadv_handle_unclaim(bat_priv, primary_if,
930 ethhdr->h_source, hw_src, vid))
934 case BATADV_CLAIM_TYPE_ANNOUNCE:
935 if (batadv_handle_announce(bat_priv, hw_src, ethhdr->h_source,
939 case BATADV_CLAIM_TYPE_REQUEST:
940 if (batadv_handle_request(bat_priv, primary_if, hw_src, ethhdr,
946 batadv_dbg(BATADV_DBG_BLA, bat_priv,
947 "bla_process_claim(): ERROR - this looks like a claim frame, but is useless. eth src %pM on vid %d ...(hw_src %pM, hw_dst %pM)\n",
948 ethhdr->h_source, vid, hw_src, hw_dst);
952 /* Check when we last heard from other nodes, and remove them in case of
953 * a time out, or clean all backbone gws if now is set.
955 static void batadv_bla_purge_backbone_gw(struct batadv_priv *bat_priv, int now)
957 struct batadv_bla_backbone_gw *backbone_gw;
958 struct hlist_node *node_tmp;
959 struct hlist_head *head;
960 struct batadv_hashtable *hash;
961 spinlock_t *list_lock; /* protects write access to the hash lists */
964 hash = bat_priv->bla.backbone_hash;
968 for (i = 0; i < hash->size; i++) {
969 head = &hash->table[i];
970 list_lock = &hash->list_locks[i];
972 spin_lock_bh(list_lock);
973 hlist_for_each_entry_safe(backbone_gw, node_tmp,
977 if (!batadv_has_timed_out(backbone_gw->lasttime,
978 BATADV_BLA_BACKBONE_TIMEOUT))
981 batadv_dbg(BATADV_DBG_BLA, backbone_gw->bat_priv,
982 "bla_purge_backbone_gw(): backbone gw %pM timed out\n",
986 /* don't wait for the pending request anymore */
987 if (atomic_read(&backbone_gw->request_sent))
988 atomic_dec(&bat_priv->bla.num_requests);
990 batadv_bla_del_backbone_claims(backbone_gw);
992 hlist_del_rcu(&backbone_gw->hash_entry);
993 batadv_backbone_gw_free_ref(backbone_gw);
995 spin_unlock_bh(list_lock);
1000 * batadv_bla_purge_claims
1001 * @bat_priv: the bat priv with all the soft interface information
1002 * @primary_if: the selected primary interface, may be NULL if now is set
1003 * @now: whether the whole hash shall be wiped now
1005 * Check when we heard last time from our own claims, and remove them in case of
1006 * a time out, or clean all claims if now is set
1008 static void batadv_bla_purge_claims(struct batadv_priv *bat_priv,
1009 struct batadv_hard_iface *primary_if,
1012 struct batadv_bla_claim *claim;
1013 struct hlist_head *head;
1014 struct batadv_hashtable *hash;
1017 hash = bat_priv->bla.claim_hash;
1021 for (i = 0; i < hash->size; i++) {
1022 head = &hash->table[i];
1025 hlist_for_each_entry_rcu(claim, head, hash_entry) {
1028 if (!batadv_compare_eth(claim->backbone_gw->orig,
1029 primary_if->net_dev->dev_addr))
1031 if (!batadv_has_timed_out(claim->lasttime,
1032 BATADV_BLA_CLAIM_TIMEOUT))
1035 batadv_dbg(BATADV_DBG_BLA, bat_priv,
1036 "bla_purge_claims(): %pM, vid %d, time out\n",
1037 claim->addr, claim->vid);
1040 batadv_handle_unclaim(bat_priv, primary_if,
1041 claim->backbone_gw->orig,
1042 claim->addr, claim->vid);
1049 * batadv_bla_update_orig_address
1050 * @bat_priv: the bat priv with all the soft interface information
1051 * @primary_if: the new selected primary_if
1052 * @oldif: the old primary interface, may be NULL
1054 * Update the backbone gateways when the own orig address changes.
1056 void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
1057 struct batadv_hard_iface *primary_if,
1058 struct batadv_hard_iface *oldif)
1060 struct batadv_bla_backbone_gw *backbone_gw;
1061 struct hlist_head *head;
1062 struct batadv_hashtable *hash;
1066 /* reset bridge loop avoidance group id */
1067 group = htons(crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN));
1068 bat_priv->bla.claim_dest.group = group;
1071 batadv_bla_purge_claims(bat_priv, NULL, 1);
1072 batadv_bla_purge_backbone_gw(bat_priv, 1);
1076 hash = bat_priv->bla.backbone_hash;
1080 for (i = 0; i < hash->size; i++) {
1081 head = &hash->table[i];
1084 hlist_for_each_entry_rcu(backbone_gw, head, hash_entry) {
1085 /* own orig still holds the old value. */
1086 if (!batadv_compare_eth(backbone_gw->orig,
1087 oldif->net_dev->dev_addr))
1090 memcpy(backbone_gw->orig,
1091 primary_if->net_dev->dev_addr, ETH_ALEN);
1092 /* send an announce frame so others will ask for our
1093 * claims and update their tables.
1095 batadv_bla_send_announce(bat_priv, backbone_gw);
1101 /* periodic work to do:
1102 * * purge structures when they are too old
1103 * * send announcements
1105 static void batadv_bla_periodic_work(struct work_struct *work)
1107 struct delayed_work *delayed_work;
1108 struct batadv_priv *bat_priv;
1109 struct batadv_priv_bla *priv_bla;
1110 struct hlist_head *head;
1111 struct batadv_bla_backbone_gw *backbone_gw;
1112 struct batadv_hashtable *hash;
1113 struct batadv_hard_iface *primary_if;
1116 delayed_work = container_of(work, struct delayed_work, work);
1117 priv_bla = container_of(delayed_work, struct batadv_priv_bla, work);
1118 bat_priv = container_of(priv_bla, struct batadv_priv, bla);
1119 primary_if = batadv_primary_if_get_selected(bat_priv);
1123 batadv_bla_purge_claims(bat_priv, primary_if, 0);
1124 batadv_bla_purge_backbone_gw(bat_priv, 0);
1126 if (!atomic_read(&bat_priv->bridge_loop_avoidance))
1129 hash = bat_priv->bla.backbone_hash;
1133 for (i = 0; i < hash->size; i++) {
1134 head = &hash->table[i];
1137 hlist_for_each_entry_rcu(backbone_gw, head, hash_entry) {
1138 if (!batadv_compare_eth(backbone_gw->orig,
1139 primary_if->net_dev->dev_addr))
1142 backbone_gw->lasttime = jiffies;
1144 batadv_bla_send_announce(bat_priv, backbone_gw);
1146 /* request_sent is only set after creation to avoid
1147 * problems when we are not yet known as backbone gw
1150 * We can reset this now after we waited some periods
1151 * to give bridge forward delays and bla group forming
1155 if (atomic_read(&backbone_gw->request_sent) == 0)
1158 if (!atomic_dec_and_test(&backbone_gw->wait_periods))
1161 atomic_dec(&backbone_gw->bat_priv->bla.num_requests);
1162 atomic_set(&backbone_gw->request_sent, 0);
1168 batadv_hardif_free_ref(primary_if);
1170 queue_delayed_work(batadv_event_workqueue, &bat_priv->bla.work,
1171 msecs_to_jiffies(BATADV_BLA_PERIOD_LENGTH));
1174 /* The hash for claim and backbone hash receive the same key because they
1175 * are getting initialized by hash_new with the same key. Reinitializing
1176 * them with to different keys to allow nested locking without generating
1179 static struct lock_class_key batadv_claim_hash_lock_class_key;
1180 static struct lock_class_key batadv_backbone_hash_lock_class_key;
1182 /* initialize all bla structures */
1183 int batadv_bla_init(struct batadv_priv *bat_priv)
1186 uint8_t claim_dest[ETH_ALEN] = {0xff, 0x43, 0x05, 0x00, 0x00, 0x00};
1187 struct batadv_hard_iface *primary_if;
1189 unsigned long entrytime;
1191 spin_lock_init(&bat_priv->bla.bcast_duplist_lock);
1193 batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla hash registering\n");
1195 /* setting claim destination address */
1196 memcpy(&bat_priv->bla.claim_dest.magic, claim_dest, 3);
1197 bat_priv->bla.claim_dest.type = 0;
1198 primary_if = batadv_primary_if_get_selected(bat_priv);
1200 crc = crc16(0, primary_if->net_dev->dev_addr, ETH_ALEN);
1201 bat_priv->bla.claim_dest.group = htons(crc);
1202 batadv_hardif_free_ref(primary_if);
1204 bat_priv->bla.claim_dest.group = 0; /* will be set later */
1207 /* initialize the duplicate list */
1208 entrytime = jiffies - msecs_to_jiffies(BATADV_DUPLIST_TIMEOUT);
1209 for (i = 0; i < BATADV_DUPLIST_SIZE; i++)
1210 bat_priv->bla.bcast_duplist[i].entrytime = entrytime;
1211 bat_priv->bla.bcast_duplist_curr = 0;
1213 if (bat_priv->bla.claim_hash)
1216 bat_priv->bla.claim_hash = batadv_hash_new(128);
1217 bat_priv->bla.backbone_hash = batadv_hash_new(32);
1219 if (!bat_priv->bla.claim_hash || !bat_priv->bla.backbone_hash)
1222 batadv_hash_set_lock_class(bat_priv->bla.claim_hash,
1223 &batadv_claim_hash_lock_class_key);
1224 batadv_hash_set_lock_class(bat_priv->bla.backbone_hash,
1225 &batadv_backbone_hash_lock_class_key);
1227 batadv_dbg(BATADV_DBG_BLA, bat_priv, "bla hashes initialized\n");
1229 INIT_DELAYED_WORK(&bat_priv->bla.work, batadv_bla_periodic_work);
1231 queue_delayed_work(batadv_event_workqueue, &bat_priv->bla.work,
1232 msecs_to_jiffies(BATADV_BLA_PERIOD_LENGTH));
1237 * batadv_bla_check_bcast_duplist
1238 * @bat_priv: the bat priv with all the soft interface information
1239 * @skb: contains the bcast_packet to be checked
1241 * check if it is on our broadcast list. Another gateway might
1242 * have sent the same packet because it is connected to the same backbone,
1243 * so we have to remove this duplicate.
1245 * This is performed by checking the CRC, which will tell us
1246 * with a good chance that it is the same packet. If it is furthermore
1247 * sent by another host, drop it. We allow equal packets from
1248 * the same host however as this might be intended.
1250 int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
1251 struct sk_buff *skb)
1253 int i, curr, ret = 0;
1255 struct batadv_bcast_packet *bcast_packet;
1256 struct batadv_bcast_duplist_entry *entry;
1258 bcast_packet = (struct batadv_bcast_packet *)skb->data;
1260 /* calculate the crc ... */
1261 crc = batadv_skb_crc32(skb, (u8 *)(bcast_packet + 1));
1263 spin_lock_bh(&bat_priv->bla.bcast_duplist_lock);
1265 for (i = 0; i < BATADV_DUPLIST_SIZE; i++) {
1266 curr = (bat_priv->bla.bcast_duplist_curr + i);
1267 curr %= BATADV_DUPLIST_SIZE;
1268 entry = &bat_priv->bla.bcast_duplist[curr];
1270 /* we can stop searching if the entry is too old ;
1271 * later entries will be even older
1273 if (batadv_has_timed_out(entry->entrytime,
1274 BATADV_DUPLIST_TIMEOUT))
1277 if (entry->crc != crc)
1280 if (batadv_compare_eth(entry->orig, bcast_packet->orig))
1283 /* this entry seems to match: same crc, not too old,
1284 * and from another gw. therefore return 1 to forbid it.
1289 /* not found, add a new entry (overwrite the oldest entry)
1290 * and allow it, its the first occurence.
1292 curr = (bat_priv->bla.bcast_duplist_curr + BATADV_DUPLIST_SIZE - 1);
1293 curr %= BATADV_DUPLIST_SIZE;
1294 entry = &bat_priv->bla.bcast_duplist[curr];
1296 entry->entrytime = jiffies;
1297 memcpy(entry->orig, bcast_packet->orig, ETH_ALEN);
1298 bat_priv->bla.bcast_duplist_curr = curr;
1301 spin_unlock_bh(&bat_priv->bla.bcast_duplist_lock);
1308 /* @bat_priv: the bat priv with all the soft interface information
1309 * @orig: originator mac address
1311 * check if the originator is a gateway for any VLAN ID.
1313 * returns 1 if it is found, 0 otherwise
1315 int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, uint8_t *orig)
1317 struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
1318 struct hlist_head *head;
1319 struct batadv_bla_backbone_gw *backbone_gw;
1322 if (!atomic_read(&bat_priv->bridge_loop_avoidance))
1328 for (i = 0; i < hash->size; i++) {
1329 head = &hash->table[i];
1332 hlist_for_each_entry_rcu(backbone_gw, head, hash_entry) {
1333 if (batadv_compare_eth(backbone_gw->orig, orig)) {
1346 * batadv_bla_is_backbone_gw
1347 * @skb: the frame to be checked
1348 * @orig_node: the orig_node of the frame
1349 * @hdr_size: maximum length of the frame
1351 * bla_is_backbone_gw inspects the skb for the VLAN ID and returns 1
1352 * if the orig_node is also a gateway on the soft interface, otherwise it
1355 int batadv_bla_is_backbone_gw(struct sk_buff *skb,
1356 struct batadv_orig_node *orig_node, int hdr_size)
1358 struct ethhdr *ethhdr;
1359 struct vlan_ethhdr *vhdr;
1360 struct batadv_bla_backbone_gw *backbone_gw;
1363 if (!atomic_read(&orig_node->bat_priv->bridge_loop_avoidance))
1366 /* first, find out the vid. */
1367 if (!pskb_may_pull(skb, hdr_size + ETH_HLEN))
1370 ethhdr = (struct ethhdr *)(((uint8_t *)skb->data) + hdr_size);
1372 if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
1373 if (!pskb_may_pull(skb, hdr_size + sizeof(struct vlan_ethhdr)))
1376 vhdr = (struct vlan_ethhdr *)(skb->data + hdr_size);
1377 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
1380 /* see if this originator is a backbone gw for this VLAN */
1381 backbone_gw = batadv_backbone_hash_find(orig_node->bat_priv,
1382 orig_node->orig, vid);
1386 batadv_backbone_gw_free_ref(backbone_gw);
1390 /* free all bla structures (for softinterface free or module unload) */
1391 void batadv_bla_free(struct batadv_priv *bat_priv)
1393 struct batadv_hard_iface *primary_if;
1395 cancel_delayed_work_sync(&bat_priv->bla.work);
1396 primary_if = batadv_primary_if_get_selected(bat_priv);
1398 if (bat_priv->bla.claim_hash) {
1399 batadv_bla_purge_claims(bat_priv, primary_if, 1);
1400 batadv_hash_destroy(bat_priv->bla.claim_hash);
1401 bat_priv->bla.claim_hash = NULL;
1403 if (bat_priv->bla.backbone_hash) {
1404 batadv_bla_purge_backbone_gw(bat_priv, 1);
1405 batadv_hash_destroy(bat_priv->bla.backbone_hash);
1406 bat_priv->bla.backbone_hash = NULL;
1409 batadv_hardif_free_ref(primary_if);
1414 * @bat_priv: the bat priv with all the soft interface information
1415 * @skb: the frame to be checked
1416 * @vid: the VLAN ID of the frame
1417 * @is_bcast: the packet came in a broadcast packet type.
1419 * bla_rx avoidance checks if:
1420 * * we have to race for a claim
1421 * * if the frame is allowed on the LAN
1423 * in these cases, the skb is further handled by this function and
1424 * returns 1, otherwise it returns 0 and the caller shall further
1427 int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
1430 struct ethhdr *ethhdr;
1431 struct batadv_bla_claim search_claim, *claim = NULL;
1432 struct batadv_hard_iface *primary_if;
1435 ethhdr = (struct ethhdr *)skb_mac_header(skb);
1437 primary_if = batadv_primary_if_get_selected(bat_priv);
1441 if (!atomic_read(&bat_priv->bridge_loop_avoidance))
1445 if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
1446 /* don't allow broadcasts while requests are in flight */
1447 if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast)
1450 memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
1451 search_claim.vid = vid;
1452 claim = batadv_claim_hash_find(bat_priv, &search_claim);
1455 /* possible optimization: race for a claim */
1456 /* No claim exists yet, claim it for us!
1458 batadv_handle_claim(bat_priv, primary_if,
1459 primary_if->net_dev->dev_addr,
1460 ethhdr->h_source, vid);
1464 /* if it is our own claim ... */
1465 if (batadv_compare_eth(claim->backbone_gw->orig,
1466 primary_if->net_dev->dev_addr)) {
1467 /* ... allow it in any case */
1468 claim->lasttime = jiffies;
1472 /* if it is a broadcast ... */
1473 if (is_multicast_ether_addr(ethhdr->h_dest) && is_bcast) {
1474 /* ... drop it. the responsible gateway is in charge.
1476 * We need to check is_bcast because with the gateway
1477 * feature, broadcasts (like DHCP requests) may be sent
1478 * using a unicast packet type.
1482 /* seems the client considers us as its best gateway.
1483 * send a claim and update the claim table
1486 batadv_handle_claim(bat_priv, primary_if,
1487 primary_if->net_dev->dev_addr,
1488 ethhdr->h_source, vid);
1492 batadv_bla_update_own_backbone_gw(bat_priv, primary_if, vid);
1502 batadv_hardif_free_ref(primary_if);
1504 batadv_claim_free_ref(claim);
1510 * @bat_priv: the bat priv with all the soft interface information
1511 * @skb: the frame to be checked
1512 * @vid: the VLAN ID of the frame
1515 * * a claim was received which has to be processed
1516 * * the frame is allowed on the mesh
1518 * in these cases, the skb is further handled by this function and
1519 * returns 1, otherwise it returns 0 and the caller shall further
1522 int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid)
1524 struct ethhdr *ethhdr;
1525 struct batadv_bla_claim search_claim, *claim = NULL;
1526 struct batadv_hard_iface *primary_if;
1529 primary_if = batadv_primary_if_get_selected(bat_priv);
1533 if (!atomic_read(&bat_priv->bridge_loop_avoidance))
1536 /* in VLAN case, the mac header might not be set. */
1537 skb_reset_mac_header(skb);
1539 if (batadv_bla_process_claim(bat_priv, primary_if, skb))
1542 ethhdr = (struct ethhdr *)skb_mac_header(skb);
1544 if (unlikely(atomic_read(&bat_priv->bla.num_requests)))
1545 /* don't allow broadcasts while requests are in flight */
1546 if (is_multicast_ether_addr(ethhdr->h_dest))
1549 memcpy(search_claim.addr, ethhdr->h_source, ETH_ALEN);
1550 search_claim.vid = vid;
1552 claim = batadv_claim_hash_find(bat_priv, &search_claim);
1554 /* if no claim exists, allow it. */
1558 /* check if we are responsible. */
1559 if (batadv_compare_eth(claim->backbone_gw->orig,
1560 primary_if->net_dev->dev_addr)) {
1561 /* if yes, the client has roamed and we have
1564 batadv_handle_unclaim(bat_priv, primary_if,
1565 primary_if->net_dev->dev_addr,
1566 ethhdr->h_source, vid);
1570 /* check if it is a multicast/broadcast frame */
1571 if (is_multicast_ether_addr(ethhdr->h_dest)) {
1572 /* drop it. the responsible gateway has forwarded it into
1573 * the backbone network.
1577 /* we must allow it. at least if we are
1578 * responsible for the DESTINATION.
1583 batadv_bla_update_own_backbone_gw(bat_priv, primary_if, vid);
1590 batadv_hardif_free_ref(primary_if);
1592 batadv_claim_free_ref(claim);
1596 int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset)
1598 struct net_device *net_dev = (struct net_device *)seq->private;
1599 struct batadv_priv *bat_priv = netdev_priv(net_dev);
1600 struct batadv_hashtable *hash = bat_priv->bla.claim_hash;
1601 struct batadv_bla_claim *claim;
1602 struct batadv_hard_iface *primary_if;
1603 struct hlist_head *head;
1606 uint8_t *primary_addr;
1608 primary_if = batadv_seq_print_text_primary_if_get(seq);
1612 primary_addr = primary_if->net_dev->dev_addr;
1614 "Claims announced for the mesh %s (orig %pM, group id %#.4x)\n",
1615 net_dev->name, primary_addr,
1616 ntohs(bat_priv->bla.claim_dest.group));
1617 seq_printf(seq, " %-17s %-5s %-17s [o] (%-6s)\n",
1618 "Client", "VID", "Originator", "CRC");
1619 for (i = 0; i < hash->size; i++) {
1620 head = &hash->table[i];
1623 hlist_for_each_entry_rcu(claim, head, hash_entry) {
1624 is_own = batadv_compare_eth(claim->backbone_gw->orig,
1626 seq_printf(seq, " * %pM on % 5d by %pM [%c] (%#.4x)\n",
1627 claim->addr, claim->vid,
1628 claim->backbone_gw->orig,
1629 (is_own ? 'x' : ' '),
1630 claim->backbone_gw->crc);
1636 batadv_hardif_free_ref(primary_if);
1640 int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
1642 struct net_device *net_dev = (struct net_device *)seq->private;
1643 struct batadv_priv *bat_priv = netdev_priv(net_dev);
1644 struct batadv_hashtable *hash = bat_priv->bla.backbone_hash;
1645 struct batadv_bla_backbone_gw *backbone_gw;
1646 struct batadv_hard_iface *primary_if;
1647 struct hlist_head *head;
1651 uint8_t *primary_addr;
1653 primary_if = batadv_seq_print_text_primary_if_get(seq);
1657 primary_addr = primary_if->net_dev->dev_addr;
1659 "Backbones announced for the mesh %s (orig %pM, group id %#.4x)\n",
1660 net_dev->name, primary_addr,
1661 ntohs(bat_priv->bla.claim_dest.group));
1662 seq_printf(seq, " %-17s %-5s %-9s (%-6s)\n",
1663 "Originator", "VID", "last seen", "CRC");
1664 for (i = 0; i < hash->size; i++) {
1665 head = &hash->table[i];
1668 hlist_for_each_entry_rcu(backbone_gw, head, hash_entry) {
1669 msecs = jiffies_to_msecs(jiffies -
1670 backbone_gw->lasttime);
1671 secs = msecs / 1000;
1672 msecs = msecs % 1000;
1674 is_own = batadv_compare_eth(backbone_gw->orig,
1680 " * %pM on % 5d % 4i.%03is (%#.4x)\n",
1681 backbone_gw->orig, backbone_gw->vid,
1682 secs, msecs, backbone_gw->crc);
1688 batadv_hardif_free_ref(primary_if);