1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) B.A.T.M.A.N. contributors:
4 * Linus Lüssing, Marek Lindner
10 #include <linux/atomic.h>
11 #include <linux/cache.h>
12 #include <linux/errno.h>
13 #include <linux/if_ether.h>
14 #include <linux/init.h>
15 #include <linux/jiffies.h>
16 #include <linux/kref.h>
17 #include <linux/list.h>
18 #include <linux/minmax.h>
19 #include <linux/netdevice.h>
20 #include <linux/netlink.h>
21 #include <linux/rculist.h>
22 #include <linux/rcupdate.h>
23 #include <linux/skbuff.h>
24 #include <linux/spinlock.h>
25 #include <linux/stddef.h>
26 #include <linux/types.h>
27 #include <linux/workqueue.h>
28 #include <net/genetlink.h>
29 #include <net/netlink.h>
30 #include <uapi/linux/batadv_packet.h>
31 #include <uapi/linux/batman_adv.h>
34 #include "bat_v_elp.h"
35 #include "bat_v_ogm.h"
36 #include "gateway_client.h"
37 #include "gateway_common.h"
38 #include "hard-interface.h"
42 #include "originator.h"
44 static void batadv_v_iface_activate(struct batadv_hard_iface *hard_iface)
46 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
47 struct batadv_hard_iface *primary_if;
49 primary_if = batadv_primary_if_get_selected(bat_priv);
52 batadv_v_elp_iface_activate(primary_if, hard_iface);
53 batadv_hardif_put(primary_if);
56 /* B.A.T.M.A.N. V does not use any queuing mechanism, therefore it can
57 * set the interface as ACTIVE right away, without any risk of race
60 if (hard_iface->if_status == BATADV_IF_TO_BE_ACTIVATED)
61 hard_iface->if_status = BATADV_IF_ACTIVE;
64 static int batadv_v_iface_enable(struct batadv_hard_iface *hard_iface)
68 ret = batadv_v_elp_iface_enable(hard_iface);
72 ret = batadv_v_ogm_iface_enable(hard_iface);
74 batadv_v_elp_iface_disable(hard_iface);
79 static void batadv_v_iface_disable(struct batadv_hard_iface *hard_iface)
81 batadv_v_ogm_iface_disable(hard_iface);
82 batadv_v_elp_iface_disable(hard_iface);
85 static void batadv_v_primary_iface_set(struct batadv_hard_iface *hard_iface)
87 batadv_v_elp_primary_iface_set(hard_iface);
88 batadv_v_ogm_primary_iface_set(hard_iface);
92 * batadv_v_iface_update_mac() - react to hard-interface MAC address change
93 * @hard_iface: the modified interface
95 * If the modified interface is the primary one, update the originator
96 * address in the ELP and OGM messages to reflect the new MAC address.
98 static void batadv_v_iface_update_mac(struct batadv_hard_iface *hard_iface)
100 struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
101 struct batadv_hard_iface *primary_if;
103 primary_if = batadv_primary_if_get_selected(bat_priv);
104 if (primary_if != hard_iface)
107 batadv_v_primary_iface_set(hard_iface);
109 batadv_hardif_put(primary_if);
113 batadv_v_hardif_neigh_init(struct batadv_hardif_neigh_node *hardif_neigh)
115 ewma_throughput_init(&hardif_neigh->bat_v.throughput);
116 INIT_WORK(&hardif_neigh->bat_v.metric_work,
117 batadv_v_elp_throughput_metric_update);
121 * batadv_v_neigh_dump_neigh() - Dump a neighbour into a message
122 * @msg: Netlink message to dump into
123 * @portid: Port making netlink request
124 * @seq: Sequence number of netlink message
125 * @hardif_neigh: Neighbour to dump
127 * Return: Error code, or 0 on success
130 batadv_v_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq,
131 struct batadv_hardif_neigh_node *hardif_neigh)
134 unsigned int last_seen_msecs;
137 last_seen_msecs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen);
138 throughput = ewma_throughput_read(&hardif_neigh->bat_v.throughput);
139 throughput = throughput * 100;
141 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
142 BATADV_CMD_GET_NEIGHBORS);
146 if (nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN,
147 hardif_neigh->addr) ||
148 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
149 hardif_neigh->if_incoming->net_dev->name) ||
150 nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
151 hardif_neigh->if_incoming->net_dev->ifindex) ||
152 nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS,
154 nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput))
155 goto nla_put_failure;
157 genlmsg_end(msg, hdr);
161 genlmsg_cancel(msg, hdr);
166 * batadv_v_neigh_dump_hardif() - Dump the neighbours of a hard interface into
168 * @msg: Netlink message to dump into
169 * @portid: Port making netlink request
170 * @seq: Sequence number of netlink message
171 * @bat_priv: The bat priv with all the soft interface information
172 * @hard_iface: The hard interface to be dumped
173 * @idx_s: Entries to be skipped
175 * This function assumes the caller holds rcu_read_lock().
177 * Return: Error code, or 0 on success
180 batadv_v_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq,
181 struct batadv_priv *bat_priv,
182 struct batadv_hard_iface *hard_iface,
185 struct batadv_hardif_neigh_node *hardif_neigh;
188 hlist_for_each_entry_rcu(hardif_neigh,
189 &hard_iface->neigh_list, list) {
193 if (batadv_v_neigh_dump_neigh(msg, portid, seq, hardif_neigh)) {
204 * batadv_v_neigh_dump() - Dump the neighbours of a hard interface into a
206 * @msg: Netlink message to dump into
207 * @cb: Control block containing additional options
208 * @bat_priv: The bat priv with all the soft interface information
209 * @single_hardif: Limit dumping to this hard interface
212 batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb,
213 struct batadv_priv *bat_priv,
214 struct batadv_hard_iface *single_hardif)
216 struct batadv_hard_iface *hard_iface;
218 int i_hardif_s = cb->args[0];
219 int idx = cb->args[1];
220 int portid = NETLINK_CB(cb->skb).portid;
224 if (i_hardif_s == 0) {
225 if (batadv_v_neigh_dump_hardif(msg, portid,
227 bat_priv, single_hardif,
232 list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
233 if (hard_iface->soft_iface != bat_priv->soft_iface)
236 if (i_hardif++ < i_hardif_s)
239 if (batadv_v_neigh_dump_hardif(msg, portid,
241 bat_priv, hard_iface,
250 cb->args[0] = i_hardif;
255 * batadv_v_orig_dump_subentry() - Dump an originator subentry into a message
256 * @msg: Netlink message to dump into
257 * @portid: Port making netlink request
258 * @seq: Sequence number of netlink message
259 * @bat_priv: The bat priv with all the soft interface information
260 * @if_outgoing: Limit dump to entries with this outgoing interface
261 * @orig_node: Originator to dump
262 * @neigh_node: Single hops neighbour
263 * @best: Is the best originator
265 * Return: Error code, or 0 on success
268 batadv_v_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq,
269 struct batadv_priv *bat_priv,
270 struct batadv_hard_iface *if_outgoing,
271 struct batadv_orig_node *orig_node,
272 struct batadv_neigh_node *neigh_node,
275 struct batadv_neigh_ifinfo *n_ifinfo;
276 unsigned int last_seen_msecs;
280 n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
284 throughput = n_ifinfo->bat_v.throughput * 100;
286 batadv_neigh_ifinfo_put(n_ifinfo);
288 last_seen_msecs = jiffies_to_msecs(jiffies - orig_node->last_seen);
290 if (if_outgoing != BATADV_IF_DEFAULT &&
291 if_outgoing != neigh_node->if_incoming)
294 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
295 BATADV_CMD_GET_ORIGINATORS);
299 if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, orig_node->orig) ||
300 nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN,
302 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
303 neigh_node->if_incoming->net_dev->name) ||
304 nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
305 neigh_node->if_incoming->net_dev->ifindex) ||
306 nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput) ||
307 nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS,
309 goto nla_put_failure;
311 if (best && nla_put_flag(msg, BATADV_ATTR_FLAG_BEST))
312 goto nla_put_failure;
314 genlmsg_end(msg, hdr);
318 genlmsg_cancel(msg, hdr);
323 * batadv_v_orig_dump_entry() - Dump an originator entry into a message
324 * @msg: Netlink message to dump into
325 * @portid: Port making netlink request
326 * @seq: Sequence number of netlink message
327 * @bat_priv: The bat priv with all the soft interface information
328 * @if_outgoing: Limit dump to entries with this outgoing interface
329 * @orig_node: Originator to dump
330 * @sub_s: Number of sub entries to skip
332 * This function assumes the caller holds rcu_read_lock().
334 * Return: Error code, or 0 on success
337 batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
338 struct batadv_priv *bat_priv,
339 struct batadv_hard_iface *if_outgoing,
340 struct batadv_orig_node *orig_node, int *sub_s)
342 struct batadv_neigh_node *neigh_node_best;
343 struct batadv_neigh_node *neigh_node;
347 neigh_node_best = batadv_orig_router_get(orig_node, if_outgoing);
348 if (!neigh_node_best)
351 hlist_for_each_entry_rcu(neigh_node, &orig_node->neigh_list, list) {
355 best = (neigh_node == neigh_node_best);
357 if (batadv_v_orig_dump_subentry(msg, portid, seq, bat_priv,
358 if_outgoing, orig_node,
360 batadv_neigh_node_put(neigh_node_best);
368 batadv_neigh_node_put(neigh_node_best);
375 * batadv_v_orig_dump_bucket() - Dump an originator bucket into a message
376 * @msg: Netlink message to dump into
377 * @portid: Port making netlink request
378 * @seq: Sequence number of netlink message
379 * @bat_priv: The bat priv with all the soft interface information
380 * @if_outgoing: Limit dump to entries with this outgoing interface
381 * @head: Bucket to be dumped
382 * @idx_s: Number of entries to be skipped
383 * @sub: Number of sub entries to be skipped
385 * Return: Error code, or 0 on success
388 batadv_v_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq,
389 struct batadv_priv *bat_priv,
390 struct batadv_hard_iface *if_outgoing,
391 struct hlist_head *head, int *idx_s, int *sub)
393 struct batadv_orig_node *orig_node;
397 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
401 if (batadv_v_orig_dump_entry(msg, portid, seq, bat_priv,
402 if_outgoing, orig_node, sub)) {
416 * batadv_v_orig_dump() - Dump the originators into a message
417 * @msg: Netlink message to dump into
418 * @cb: Control block containing additional options
419 * @bat_priv: The bat priv with all the soft interface information
420 * @if_outgoing: Limit dump to entries with this outgoing interface
423 batadv_v_orig_dump(struct sk_buff *msg, struct netlink_callback *cb,
424 struct batadv_priv *bat_priv,
425 struct batadv_hard_iface *if_outgoing)
427 struct batadv_hashtable *hash = bat_priv->orig_hash;
428 struct hlist_head *head;
429 int bucket = cb->args[0];
430 int idx = cb->args[1];
431 int sub = cb->args[2];
432 int portid = NETLINK_CB(cb->skb).portid;
434 while (bucket < hash->size) {
435 head = &hash->table[bucket];
437 if (batadv_v_orig_dump_bucket(msg, portid,
439 bat_priv, if_outgoing, head, &idx,
446 cb->args[0] = bucket;
451 static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1,
452 struct batadv_hard_iface *if_outgoing1,
453 struct batadv_neigh_node *neigh2,
454 struct batadv_hard_iface *if_outgoing2)
456 struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
459 ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
463 ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
467 ret = ifinfo1->bat_v.throughput - ifinfo2->bat_v.throughput;
469 batadv_neigh_ifinfo_put(ifinfo2);
471 batadv_neigh_ifinfo_put(ifinfo1);
476 static bool batadv_v_neigh_is_sob(struct batadv_neigh_node *neigh1,
477 struct batadv_hard_iface *if_outgoing1,
478 struct batadv_neigh_node *neigh2,
479 struct batadv_hard_iface *if_outgoing2)
481 struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
485 ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
489 ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
493 threshold = ifinfo1->bat_v.throughput / 4;
494 threshold = ifinfo1->bat_v.throughput - threshold;
496 ret = ifinfo2->bat_v.throughput > threshold;
498 batadv_neigh_ifinfo_put(ifinfo2);
500 batadv_neigh_ifinfo_put(ifinfo1);
506 * batadv_v_init_sel_class() - initialize GW selection class
507 * @bat_priv: the bat priv with all the soft interface information
509 static void batadv_v_init_sel_class(struct batadv_priv *bat_priv)
511 /* set default throughput difference threshold to 5Mbps */
512 atomic_set(&bat_priv->gw.sel_class, 50);
515 static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv,
516 char *buff, size_t count)
518 u32 old_class, class;
520 if (!batadv_parse_throughput(bat_priv->soft_iface, buff,
521 "B.A.T.M.A.N. V GW selection class",
525 old_class = atomic_read(&bat_priv->gw.sel_class);
526 atomic_set(&bat_priv->gw.sel_class, class);
528 if (old_class != class)
529 batadv_gw_reselect(bat_priv);
535 * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW
536 * @gw_node: the GW to retrieve the metric for
537 * @bw: the pointer where the metric will be stored. The metric is computed as
538 * the minimum between the GW advertised throughput and the path throughput to
541 * Return: 0 on success, -1 on failure
543 static int batadv_v_gw_throughput_get(struct batadv_gw_node *gw_node, u32 *bw)
545 struct batadv_neigh_ifinfo *router_ifinfo = NULL;
546 struct batadv_orig_node *orig_node;
547 struct batadv_neigh_node *router;
550 orig_node = gw_node->orig_node;
551 router = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT);
555 router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
559 /* the GW metric is computed as the minimum between the path throughput
560 * to reach the GW itself and the advertised bandwidth.
561 * This gives us an approximation of the effective throughput that the
562 * client can expect via this particular GW node
564 *bw = router_ifinfo->bat_v.throughput;
565 *bw = min_t(u32, *bw, gw_node->bandwidth_down);
569 batadv_neigh_node_put(router);
570 batadv_neigh_ifinfo_put(router_ifinfo);
576 * batadv_v_gw_get_best_gw_node() - retrieve the best GW node
577 * @bat_priv: the bat priv with all the soft interface information
579 * Return: the GW node having the best GW-metric, NULL if no GW is known
581 static struct batadv_gw_node *
582 batadv_v_gw_get_best_gw_node(struct batadv_priv *bat_priv)
584 struct batadv_gw_node *gw_node, *curr_gw = NULL;
588 hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.gateway_list, list) {
589 if (!kref_get_unless_zero(&gw_node->refcount))
592 if (batadv_v_gw_throughput_get(gw_node, &bw) < 0)
595 if (curr_gw && bw <= max_bw)
598 batadv_gw_node_put(curr_gw);
601 kref_get(&curr_gw->refcount);
605 batadv_gw_node_put(gw_node);
613 * batadv_v_gw_is_eligible() - check if a originator would be selected as GW
614 * @bat_priv: the bat priv with all the soft interface information
615 * @curr_gw_orig: originator representing the currently selected GW
616 * @orig_node: the originator representing the new candidate
618 * Return: true if orig_node can be selected as current GW, false otherwise
620 static bool batadv_v_gw_is_eligible(struct batadv_priv *bat_priv,
621 struct batadv_orig_node *curr_gw_orig,
622 struct batadv_orig_node *orig_node)
624 struct batadv_gw_node *curr_gw, *orig_gw = NULL;
625 u32 gw_throughput, orig_throughput, threshold;
628 threshold = atomic_read(&bat_priv->gw.sel_class);
630 curr_gw = batadv_gw_node_get(bat_priv, curr_gw_orig);
636 if (batadv_v_gw_throughput_get(curr_gw, &gw_throughput) < 0) {
641 orig_gw = batadv_gw_node_get(bat_priv, orig_node);
645 if (batadv_v_gw_throughput_get(orig_gw, &orig_throughput) < 0)
648 if (orig_throughput < gw_throughput)
651 if ((orig_throughput - gw_throughput) < threshold)
654 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
655 "Restarting gateway selection: better gateway found (throughput curr: %u, throughput new: %u)\n",
656 gw_throughput, orig_throughput);
660 batadv_gw_node_put(curr_gw);
661 batadv_gw_node_put(orig_gw);
667 * batadv_v_gw_dump_entry() - Dump a gateway into a message
668 * @msg: Netlink message to dump into
669 * @portid: Port making netlink request
670 * @cb: Control block containing additional options
671 * @bat_priv: The bat priv with all the soft interface information
672 * @gw_node: Gateway to be dumped
674 * Return: Error code, or 0 on success
676 static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid,
677 struct netlink_callback *cb,
678 struct batadv_priv *bat_priv,
679 struct batadv_gw_node *gw_node)
681 struct batadv_neigh_ifinfo *router_ifinfo = NULL;
682 struct batadv_neigh_node *router;
683 struct batadv_gw_node *curr_gw = NULL;
687 router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);
691 router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
695 curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
697 hdr = genlmsg_put(msg, portid, cb->nlh->nlmsg_seq,
698 &batadv_netlink_family, NLM_F_MULTI,
699 BATADV_CMD_GET_GATEWAYS);
705 genl_dump_check_consistent(cb, hdr);
709 if (curr_gw == gw_node) {
710 if (nla_put_flag(msg, BATADV_ATTR_FLAG_BEST)) {
711 genlmsg_cancel(msg, hdr);
716 if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN,
717 gw_node->orig_node->orig)) {
718 genlmsg_cancel(msg, hdr);
722 if (nla_put_u32(msg, BATADV_ATTR_THROUGHPUT,
723 router_ifinfo->bat_v.throughput)) {
724 genlmsg_cancel(msg, hdr);
728 if (nla_put(msg, BATADV_ATTR_ROUTER, ETH_ALEN, router->addr)) {
729 genlmsg_cancel(msg, hdr);
733 if (nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
734 router->if_incoming->net_dev->name)) {
735 genlmsg_cancel(msg, hdr);
739 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
740 router->if_incoming->net_dev->ifindex)) {
741 genlmsg_cancel(msg, hdr);
745 if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_DOWN,
746 gw_node->bandwidth_down)) {
747 genlmsg_cancel(msg, hdr);
751 if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_UP, gw_node->bandwidth_up)) {
752 genlmsg_cancel(msg, hdr);
756 genlmsg_end(msg, hdr);
760 batadv_gw_node_put(curr_gw);
761 batadv_neigh_ifinfo_put(router_ifinfo);
762 batadv_neigh_node_put(router);
767 * batadv_v_gw_dump() - Dump gateways into a message
768 * @msg: Netlink message to dump into
769 * @cb: Control block containing additional options
770 * @bat_priv: The bat priv with all the soft interface information
772 static void batadv_v_gw_dump(struct sk_buff *msg, struct netlink_callback *cb,
773 struct batadv_priv *bat_priv)
775 int portid = NETLINK_CB(cb->skb).portid;
776 struct batadv_gw_node *gw_node;
777 int idx_skip = cb->args[0];
780 spin_lock_bh(&bat_priv->gw.list_lock);
781 cb->seq = bat_priv->gw.generation << 1 | 1;
783 hlist_for_each_entry(gw_node, &bat_priv->gw.gateway_list, list) {
784 if (idx++ < idx_skip)
787 if (batadv_v_gw_dump_entry(msg, portid, cb, bat_priv,
796 spin_unlock_bh(&bat_priv->gw.list_lock);
798 cb->args[0] = idx_skip;
801 static struct batadv_algo_ops batadv_batman_v __read_mostly = {
804 .activate = batadv_v_iface_activate,
805 .enable = batadv_v_iface_enable,
806 .disable = batadv_v_iface_disable,
807 .update_mac = batadv_v_iface_update_mac,
808 .primary_set = batadv_v_primary_iface_set,
811 .hardif_init = batadv_v_hardif_neigh_init,
812 .cmp = batadv_v_neigh_cmp,
813 .is_similar_or_better = batadv_v_neigh_is_sob,
814 .dump = batadv_v_neigh_dump,
817 .dump = batadv_v_orig_dump,
820 .init_sel_class = batadv_v_init_sel_class,
821 .store_sel_class = batadv_v_store_sel_class,
822 .get_best_gw_node = batadv_v_gw_get_best_gw_node,
823 .is_eligible = batadv_v_gw_is_eligible,
824 .dump = batadv_v_gw_dump,
829 * batadv_v_hardif_init() - initialize the algorithm specific fields in the
830 * hard-interface object
831 * @hard_iface: the hard-interface to initialize
833 void batadv_v_hardif_init(struct batadv_hard_iface *hard_iface)
835 /* enable link throughput auto-detection by setting the throughput
838 atomic_set(&hard_iface->bat_v.throughput_override, 0);
839 atomic_set(&hard_iface->bat_v.elp_interval, 500);
841 hard_iface->bat_v.aggr_len = 0;
842 skb_queue_head_init(&hard_iface->bat_v.aggr_list);
843 INIT_DELAYED_WORK(&hard_iface->bat_v.aggr_wq,
844 batadv_v_ogm_aggr_work);
848 * batadv_v_mesh_init() - initialize the B.A.T.M.A.N. V private resources for a
850 * @bat_priv: the object representing the mesh interface to initialise
852 * Return: 0 on success or a negative error code otherwise
854 int batadv_v_mesh_init(struct batadv_priv *bat_priv)
858 ret = batadv_v_ogm_init(bat_priv);
866 * batadv_v_mesh_free() - free the B.A.T.M.A.N. V private resources for a mesh
867 * @bat_priv: the object representing the mesh interface to free
869 void batadv_v_mesh_free(struct batadv_priv *bat_priv)
871 batadv_v_ogm_free(bat_priv);
875 * batadv_v_init() - B.A.T.M.A.N. V initialization function
877 * Description: Takes care of initializing all the subcomponents.
878 * It is invoked upon module load only.
880 * Return: 0 on success or a negative error code otherwise
882 int __init batadv_v_init(void)
886 /* B.A.T.M.A.N. V echo location protocol packet */
887 ret = batadv_recv_handler_register(BATADV_ELP,
888 batadv_v_elp_packet_recv);
892 ret = batadv_recv_handler_register(BATADV_OGM2,
893 batadv_v_ogm_packet_recv);
897 ret = batadv_algo_register(&batadv_batman_v);
904 batadv_recv_handler_unregister(BATADV_OGM2);
907 batadv_recv_handler_unregister(BATADV_ELP);