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);
110 batadv_hardif_put(primary_if);
114 batadv_v_hardif_neigh_init(struct batadv_hardif_neigh_node *hardif_neigh)
116 ewma_throughput_init(&hardif_neigh->bat_v.throughput);
117 INIT_WORK(&hardif_neigh->bat_v.metric_work,
118 batadv_v_elp_throughput_metric_update);
122 * batadv_v_neigh_dump_neigh() - Dump a neighbour into a message
123 * @msg: Netlink message to dump into
124 * @portid: Port making netlink request
125 * @seq: Sequence number of netlink message
126 * @hardif_neigh: Neighbour to dump
128 * Return: Error code, or 0 on success
131 batadv_v_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq,
132 struct batadv_hardif_neigh_node *hardif_neigh)
135 unsigned int last_seen_msecs;
138 last_seen_msecs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen);
139 throughput = ewma_throughput_read(&hardif_neigh->bat_v.throughput);
140 throughput = throughput * 100;
142 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
143 BATADV_CMD_GET_NEIGHBORS);
147 if (nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN,
148 hardif_neigh->addr) ||
149 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
150 hardif_neigh->if_incoming->net_dev->name) ||
151 nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
152 hardif_neigh->if_incoming->net_dev->ifindex) ||
153 nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS,
155 nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput))
156 goto nla_put_failure;
158 genlmsg_end(msg, hdr);
162 genlmsg_cancel(msg, hdr);
167 * batadv_v_neigh_dump_hardif() - Dump the neighbours of a hard interface into
169 * @msg: Netlink message to dump into
170 * @portid: Port making netlink request
171 * @seq: Sequence number of netlink message
172 * @bat_priv: The bat priv with all the soft interface information
173 * @hard_iface: The hard interface to be dumped
174 * @idx_s: Entries to be skipped
176 * This function assumes the caller holds rcu_read_lock().
178 * Return: Error code, or 0 on success
181 batadv_v_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq,
182 struct batadv_priv *bat_priv,
183 struct batadv_hard_iface *hard_iface,
186 struct batadv_hardif_neigh_node *hardif_neigh;
189 hlist_for_each_entry_rcu(hardif_neigh,
190 &hard_iface->neigh_list, list) {
194 if (batadv_v_neigh_dump_neigh(msg, portid, seq, hardif_neigh)) {
205 * batadv_v_neigh_dump() - Dump the neighbours of a hard interface into a
207 * @msg: Netlink message to dump into
208 * @cb: Control block containing additional options
209 * @bat_priv: The bat priv with all the soft interface information
210 * @single_hardif: Limit dumping to this hard interface
213 batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb,
214 struct batadv_priv *bat_priv,
215 struct batadv_hard_iface *single_hardif)
217 struct batadv_hard_iface *hard_iface;
219 int i_hardif_s = cb->args[0];
220 int idx = cb->args[1];
221 int portid = NETLINK_CB(cb->skb).portid;
225 if (i_hardif_s == 0) {
226 if (batadv_v_neigh_dump_hardif(msg, portid,
228 bat_priv, single_hardif,
233 list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
234 if (hard_iface->soft_iface != bat_priv->soft_iface)
237 if (i_hardif++ < i_hardif_s)
240 if (batadv_v_neigh_dump_hardif(msg, portid,
242 bat_priv, hard_iface,
251 cb->args[0] = i_hardif;
256 * batadv_v_orig_dump_subentry() - Dump an originator subentry into a message
257 * @msg: Netlink message to dump into
258 * @portid: Port making netlink request
259 * @seq: Sequence number of netlink message
260 * @bat_priv: The bat priv with all the soft interface information
261 * @if_outgoing: Limit dump to entries with this outgoing interface
262 * @orig_node: Originator to dump
263 * @neigh_node: Single hops neighbour
264 * @best: Is the best originator
266 * Return: Error code, or 0 on success
269 batadv_v_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq,
270 struct batadv_priv *bat_priv,
271 struct batadv_hard_iface *if_outgoing,
272 struct batadv_orig_node *orig_node,
273 struct batadv_neigh_node *neigh_node,
276 struct batadv_neigh_ifinfo *n_ifinfo;
277 unsigned int last_seen_msecs;
281 n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
285 throughput = n_ifinfo->bat_v.throughput * 100;
287 batadv_neigh_ifinfo_put(n_ifinfo);
289 last_seen_msecs = jiffies_to_msecs(jiffies - orig_node->last_seen);
291 if (if_outgoing != BATADV_IF_DEFAULT &&
292 if_outgoing != neigh_node->if_incoming)
295 hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
296 BATADV_CMD_GET_ORIGINATORS);
300 if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, orig_node->orig) ||
301 nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN,
303 nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
304 neigh_node->if_incoming->net_dev->name) ||
305 nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
306 neigh_node->if_incoming->net_dev->ifindex) ||
307 nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput) ||
308 nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS,
310 goto nla_put_failure;
312 if (best && nla_put_flag(msg, BATADV_ATTR_FLAG_BEST))
313 goto nla_put_failure;
315 genlmsg_end(msg, hdr);
319 genlmsg_cancel(msg, hdr);
324 * batadv_v_orig_dump_entry() - Dump an originator entry into a message
325 * @msg: Netlink message to dump into
326 * @portid: Port making netlink request
327 * @seq: Sequence number of netlink message
328 * @bat_priv: The bat priv with all the soft interface information
329 * @if_outgoing: Limit dump to entries with this outgoing interface
330 * @orig_node: Originator to dump
331 * @sub_s: Number of sub entries to skip
333 * This function assumes the caller holds rcu_read_lock().
335 * Return: Error code, or 0 on success
338 batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
339 struct batadv_priv *bat_priv,
340 struct batadv_hard_iface *if_outgoing,
341 struct batadv_orig_node *orig_node, int *sub_s)
343 struct batadv_neigh_node *neigh_node_best;
344 struct batadv_neigh_node *neigh_node;
348 neigh_node_best = batadv_orig_router_get(orig_node, if_outgoing);
349 if (!neigh_node_best)
352 hlist_for_each_entry_rcu(neigh_node, &orig_node->neigh_list, list) {
356 best = (neigh_node == neigh_node_best);
358 if (batadv_v_orig_dump_subentry(msg, portid, seq, bat_priv,
359 if_outgoing, orig_node,
361 batadv_neigh_node_put(neigh_node_best);
370 batadv_neigh_node_put(neigh_node_best);
377 * batadv_v_orig_dump_bucket() - Dump an originator bucket into a message
378 * @msg: Netlink message to dump into
379 * @portid: Port making netlink request
380 * @seq: Sequence number of netlink message
381 * @bat_priv: The bat priv with all the soft interface information
382 * @if_outgoing: Limit dump to entries with this outgoing interface
383 * @head: Bucket to be dumped
384 * @idx_s: Number of entries to be skipped
385 * @sub: Number of sub entries to be skipped
387 * Return: Error code, or 0 on success
390 batadv_v_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq,
391 struct batadv_priv *bat_priv,
392 struct batadv_hard_iface *if_outgoing,
393 struct hlist_head *head, int *idx_s, int *sub)
395 struct batadv_orig_node *orig_node;
399 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
403 if (batadv_v_orig_dump_entry(msg, portid, seq, bat_priv,
404 if_outgoing, orig_node, sub)) {
418 * batadv_v_orig_dump() - Dump the originators into a message
419 * @msg: Netlink message to dump into
420 * @cb: Control block containing additional options
421 * @bat_priv: The bat priv with all the soft interface information
422 * @if_outgoing: Limit dump to entries with this outgoing interface
425 batadv_v_orig_dump(struct sk_buff *msg, struct netlink_callback *cb,
426 struct batadv_priv *bat_priv,
427 struct batadv_hard_iface *if_outgoing)
429 struct batadv_hashtable *hash = bat_priv->orig_hash;
430 struct hlist_head *head;
431 int bucket = cb->args[0];
432 int idx = cb->args[1];
433 int sub = cb->args[2];
434 int portid = NETLINK_CB(cb->skb).portid;
436 while (bucket < hash->size) {
437 head = &hash->table[bucket];
439 if (batadv_v_orig_dump_bucket(msg, portid,
441 bat_priv, if_outgoing, head, &idx,
448 cb->args[0] = bucket;
453 static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1,
454 struct batadv_hard_iface *if_outgoing1,
455 struct batadv_neigh_node *neigh2,
456 struct batadv_hard_iface *if_outgoing2)
458 struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
461 ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
465 ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
469 ret = ifinfo1->bat_v.throughput - ifinfo2->bat_v.throughput;
471 batadv_neigh_ifinfo_put(ifinfo2);
473 batadv_neigh_ifinfo_put(ifinfo1);
478 static bool batadv_v_neigh_is_sob(struct batadv_neigh_node *neigh1,
479 struct batadv_hard_iface *if_outgoing1,
480 struct batadv_neigh_node *neigh2,
481 struct batadv_hard_iface *if_outgoing2)
483 struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
487 ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
491 ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
495 threshold = ifinfo1->bat_v.throughput / 4;
496 threshold = ifinfo1->bat_v.throughput - threshold;
498 ret = ifinfo2->bat_v.throughput > threshold;
500 batadv_neigh_ifinfo_put(ifinfo2);
502 batadv_neigh_ifinfo_put(ifinfo1);
508 * batadv_v_init_sel_class() - initialize GW selection class
509 * @bat_priv: the bat priv with all the soft interface information
511 static void batadv_v_init_sel_class(struct batadv_priv *bat_priv)
513 /* set default throughput difference threshold to 5Mbps */
514 atomic_set(&bat_priv->gw.sel_class, 50);
517 static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv,
518 char *buff, size_t count)
520 u32 old_class, class;
522 if (!batadv_parse_throughput(bat_priv->soft_iface, buff,
523 "B.A.T.M.A.N. V GW selection class",
527 old_class = atomic_read(&bat_priv->gw.sel_class);
528 atomic_set(&bat_priv->gw.sel_class, class);
530 if (old_class != class)
531 batadv_gw_reselect(bat_priv);
537 * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW
538 * @gw_node: the GW to retrieve the metric for
539 * @bw: the pointer where the metric will be stored. The metric is computed as
540 * the minimum between the GW advertised throughput and the path throughput to
543 * Return: 0 on success, -1 on failure
545 static int batadv_v_gw_throughput_get(struct batadv_gw_node *gw_node, u32 *bw)
547 struct batadv_neigh_ifinfo *router_ifinfo = NULL;
548 struct batadv_orig_node *orig_node;
549 struct batadv_neigh_node *router;
552 orig_node = gw_node->orig_node;
553 router = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT);
557 router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
561 /* the GW metric is computed as the minimum between the path throughput
562 * to reach the GW itself and the advertised bandwidth.
563 * This gives us an approximation of the effective throughput that the
564 * client can expect via this particular GW node
566 *bw = router_ifinfo->bat_v.throughput;
567 *bw = min_t(u32, *bw, gw_node->bandwidth_down);
572 batadv_neigh_node_put(router);
574 batadv_neigh_ifinfo_put(router_ifinfo);
580 * batadv_v_gw_get_best_gw_node() - retrieve the best GW node
581 * @bat_priv: the bat priv with all the soft interface information
583 * Return: the GW node having the best GW-metric, NULL if no GW is known
585 static struct batadv_gw_node *
586 batadv_v_gw_get_best_gw_node(struct batadv_priv *bat_priv)
588 struct batadv_gw_node *gw_node, *curr_gw = NULL;
592 hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.gateway_list, list) {
593 if (!kref_get_unless_zero(&gw_node->refcount))
596 if (batadv_v_gw_throughput_get(gw_node, &bw) < 0)
599 if (curr_gw && bw <= max_bw)
603 batadv_gw_node_put(curr_gw);
606 kref_get(&curr_gw->refcount);
610 batadv_gw_node_put(gw_node);
618 * batadv_v_gw_is_eligible() - check if a originator would be selected as GW
619 * @bat_priv: the bat priv with all the soft interface information
620 * @curr_gw_orig: originator representing the currently selected GW
621 * @orig_node: the originator representing the new candidate
623 * Return: true if orig_node can be selected as current GW, false otherwise
625 static bool batadv_v_gw_is_eligible(struct batadv_priv *bat_priv,
626 struct batadv_orig_node *curr_gw_orig,
627 struct batadv_orig_node *orig_node)
629 struct batadv_gw_node *curr_gw, *orig_gw = NULL;
630 u32 gw_throughput, orig_throughput, threshold;
633 threshold = atomic_read(&bat_priv->gw.sel_class);
635 curr_gw = batadv_gw_node_get(bat_priv, curr_gw_orig);
641 if (batadv_v_gw_throughput_get(curr_gw, &gw_throughput) < 0) {
646 orig_gw = batadv_gw_node_get(bat_priv, orig_node);
650 if (batadv_v_gw_throughput_get(orig_gw, &orig_throughput) < 0)
653 if (orig_throughput < gw_throughput)
656 if ((orig_throughput - gw_throughput) < threshold)
659 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
660 "Restarting gateway selection: better gateway found (throughput curr: %u, throughput new: %u)\n",
661 gw_throughput, orig_throughput);
666 batadv_gw_node_put(curr_gw);
668 batadv_gw_node_put(orig_gw);
674 * batadv_v_gw_dump_entry() - Dump a gateway into a message
675 * @msg: Netlink message to dump into
676 * @portid: Port making netlink request
677 * @cb: Control block containing additional options
678 * @bat_priv: The bat priv with all the soft interface information
679 * @gw_node: Gateway to be dumped
681 * Return: Error code, or 0 on success
683 static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid,
684 struct netlink_callback *cb,
685 struct batadv_priv *bat_priv,
686 struct batadv_gw_node *gw_node)
688 struct batadv_neigh_ifinfo *router_ifinfo = NULL;
689 struct batadv_neigh_node *router;
690 struct batadv_gw_node *curr_gw = NULL;
694 router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);
698 router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
702 curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
704 hdr = genlmsg_put(msg, portid, cb->nlh->nlmsg_seq,
705 &batadv_netlink_family, NLM_F_MULTI,
706 BATADV_CMD_GET_GATEWAYS);
712 genl_dump_check_consistent(cb, hdr);
716 if (curr_gw == gw_node) {
717 if (nla_put_flag(msg, BATADV_ATTR_FLAG_BEST)) {
718 genlmsg_cancel(msg, hdr);
723 if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN,
724 gw_node->orig_node->orig)) {
725 genlmsg_cancel(msg, hdr);
729 if (nla_put_u32(msg, BATADV_ATTR_THROUGHPUT,
730 router_ifinfo->bat_v.throughput)) {
731 genlmsg_cancel(msg, hdr);
735 if (nla_put(msg, BATADV_ATTR_ROUTER, ETH_ALEN, router->addr)) {
736 genlmsg_cancel(msg, hdr);
740 if (nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
741 router->if_incoming->net_dev->name)) {
742 genlmsg_cancel(msg, hdr);
746 if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
747 router->if_incoming->net_dev->ifindex)) {
748 genlmsg_cancel(msg, hdr);
752 if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_DOWN,
753 gw_node->bandwidth_down)) {
754 genlmsg_cancel(msg, hdr);
758 if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_UP, gw_node->bandwidth_up)) {
759 genlmsg_cancel(msg, hdr);
763 genlmsg_end(msg, hdr);
768 batadv_gw_node_put(curr_gw);
770 batadv_neigh_ifinfo_put(router_ifinfo);
772 batadv_neigh_node_put(router);
777 * batadv_v_gw_dump() - Dump gateways into a message
778 * @msg: Netlink message to dump into
779 * @cb: Control block containing additional options
780 * @bat_priv: The bat priv with all the soft interface information
782 static void batadv_v_gw_dump(struct sk_buff *msg, struct netlink_callback *cb,
783 struct batadv_priv *bat_priv)
785 int portid = NETLINK_CB(cb->skb).portid;
786 struct batadv_gw_node *gw_node;
787 int idx_skip = cb->args[0];
790 spin_lock_bh(&bat_priv->gw.list_lock);
791 cb->seq = bat_priv->gw.generation << 1 | 1;
793 hlist_for_each_entry(gw_node, &bat_priv->gw.gateway_list, list) {
794 if (idx++ < idx_skip)
797 if (batadv_v_gw_dump_entry(msg, portid, cb, bat_priv,
806 spin_unlock_bh(&bat_priv->gw.list_lock);
808 cb->args[0] = idx_skip;
811 static struct batadv_algo_ops batadv_batman_v __read_mostly = {
814 .activate = batadv_v_iface_activate,
815 .enable = batadv_v_iface_enable,
816 .disable = batadv_v_iface_disable,
817 .update_mac = batadv_v_iface_update_mac,
818 .primary_set = batadv_v_primary_iface_set,
821 .hardif_init = batadv_v_hardif_neigh_init,
822 .cmp = batadv_v_neigh_cmp,
823 .is_similar_or_better = batadv_v_neigh_is_sob,
824 .dump = batadv_v_neigh_dump,
827 .dump = batadv_v_orig_dump,
830 .init_sel_class = batadv_v_init_sel_class,
831 .store_sel_class = batadv_v_store_sel_class,
832 .get_best_gw_node = batadv_v_gw_get_best_gw_node,
833 .is_eligible = batadv_v_gw_is_eligible,
834 .dump = batadv_v_gw_dump,
839 * batadv_v_hardif_init() - initialize the algorithm specific fields in the
840 * hard-interface object
841 * @hard_iface: the hard-interface to initialize
843 void batadv_v_hardif_init(struct batadv_hard_iface *hard_iface)
845 /* enable link throughput auto-detection by setting the throughput
848 atomic_set(&hard_iface->bat_v.throughput_override, 0);
849 atomic_set(&hard_iface->bat_v.elp_interval, 500);
851 hard_iface->bat_v.aggr_len = 0;
852 skb_queue_head_init(&hard_iface->bat_v.aggr_list);
853 INIT_DELAYED_WORK(&hard_iface->bat_v.aggr_wq,
854 batadv_v_ogm_aggr_work);
858 * batadv_v_mesh_init() - initialize the B.A.T.M.A.N. V private resources for a
860 * @bat_priv: the object representing the mesh interface to initialise
862 * Return: 0 on success or a negative error code otherwise
864 int batadv_v_mesh_init(struct batadv_priv *bat_priv)
868 ret = batadv_v_ogm_init(bat_priv);
876 * batadv_v_mesh_free() - free the B.A.T.M.A.N. V private resources for a mesh
877 * @bat_priv: the object representing the mesh interface to free
879 void batadv_v_mesh_free(struct batadv_priv *bat_priv)
881 batadv_v_ogm_free(bat_priv);
885 * batadv_v_init() - B.A.T.M.A.N. V initialization function
887 * Description: Takes care of initializing all the subcomponents.
888 * It is invoked upon module load only.
890 * Return: 0 on success or a negative error code otherwise
892 int __init batadv_v_init(void)
896 /* B.A.T.M.A.N. V echo location protocol packet */
897 ret = batadv_recv_handler_register(BATADV_ELP,
898 batadv_v_elp_packet_recv);
902 ret = batadv_recv_handler_register(BATADV_OGM2,
903 batadv_v_ogm_packet_recv);
907 ret = batadv_algo_register(&batadv_batman_v);
914 batadv_recv_handler_unregister(BATADV_OGM2);
917 batadv_recv_handler_unregister(BATADV_ELP);