mesh.c revision 25d49e4d63564c7004a4d6735d1d8c3cc41a7394
12e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/*
2264d9b7d8a629620c8de84c614910c3164e935f8Rui Paulo * Copyright (c) 2008, 2009 open80211s Ltd.
32e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Authors:    Luis Carlos Cobo <luisca@cozybit.com>
42e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * 	       Javier Cardona <javier@cozybit.com>
52e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
62e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * This program is free software; you can redistribute it and/or modify
72e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * it under the terms of the GNU General Public License version 2 as
82e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * published by the Free Software Foundation.
92e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */
102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
115a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h>
1251ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo#include <asm/unaligned.h>
132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo#include "ieee80211_i.h"
142e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo#include "mesh.h"
152e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
163491707a070c1183c709516b2f876f798c7a9a84Rui Paulo#define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
173491707a070c1183c709516b2f876f798c7a9a84Rui Paulo#define MESHCONF_CAPAB_FORWARDING    0x08
182e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
195bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#define TMR_RUNNING_HK	0
205bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#define TMR_RUNNING_MP	1
21e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo#define TMR_RUNNING_MPR	2
225bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
232e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Coboint mesh_allocated;
242e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobostatic struct kmem_cache *rm_cache;
252e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
2625d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen#ifdef CONFIG_MAC80211_MESH
2725d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersenbool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
2825d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen{
2925d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen	return (mgmt->u.action.u.mesh_action.action_code ==
3025d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen			WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
3125d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen}
3225d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen#else
3325d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersenbool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
3425d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen{ return false; }
3525d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen#endif
3625d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen
372e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobovoid ieee80211s_init(void)
382e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
392e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	mesh_pathtbl_init();
402e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	mesh_allocated = 1;
412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
422e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo				     0, 0, NULL);
432e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
442e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
452e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobovoid ieee80211s_stop(void)
462e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
472e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	mesh_pathtbl_unregister();
482e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	kmem_cache_destroy(rm_cache);
492e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
502e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
51472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_housekeeping_timer(unsigned long data)
52472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
53472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_sub_if_data *sdata = (void *) data;
54472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_local *local = sdata->local;
55472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
56472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
576b9ac4425d6ec871faf54540e0f1c5ff420a8f29Rui Paulo	set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
585bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
595bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	if (local->quiescing) {
605bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
615bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		return;
625bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	}
635bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
6464592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg	ieee80211_queue_work(&local->hw, &sdata->work);
65472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
66472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
672e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/**
682e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_matches_local - check if the config of a mesh point matches ours
692e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
702e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @ie: information elements of a management frame from the mesh peer
71f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene * @sdata: local mesh subif
722e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
732e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * This function checks if the mesh configuration of a mesh point matches the
742e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * local mesh configuration, i.e. if both nodes belong to the same mesh network.
752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */
76f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenebool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_data *sdata)
772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
78472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
792e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
802e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	/*
812e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 * As support for each feature is added, check for matching
822e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 * - On mesh config capabilities
832e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 *   - Power Save Support En
842e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 *   - Sync support enabled
852e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 *   - Sync support active
862e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 *   - Sync support required from peer
872e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 *   - MDA enabled
882e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 * - Power management control on fc
892e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 */
90472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (ifmsh->mesh_id_len == ie->mesh_id_len &&
91472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
92136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo		(ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
93136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo		(ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
94136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo		(ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
95136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo		(ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
96136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo		(ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth))
972e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		return true;
982e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
992e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	return false;
1002e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
1012e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/**
1032e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
1042e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
1052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @ie: information elements of a management frame from the mesh peer
1062e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */
107f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenebool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
1082e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
109136cfa28615ccce0f9374811480e0b81c4191ea5Rui Paulo	return (ie->mesh_config->meshconf_cap &
1103491707a070c1183c709516b2f876f798c7a9a84Rui Paulo	    MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
1112e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
1122e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/**
1142e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
1152e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
116d0709a65181beb787ef3f58cfe45536a2bb254c8Johannes Berg * @sdata: mesh interface in which mesh beacons are going to be updated
1172e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */
118d0709a65181beb787ef3f58cfe45536a2bb254c8Johannes Bergvoid mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
1192e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
1202e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	bool free_plinks;
1212e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1222e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	/* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
1232e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 * the mesh interface might be able to establish plinks with peers that
124b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo	 * are already on the table but are not on PLINK_ESTAB state. However,
125b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo	 * in general the mesh interface is not accepting peer link requests
126b4e08ea141e6d663dec31b31d6289baeaaa2a3a2Luis Carlos Cobo	 * from new peers, and that must be reflected in the beacon
1272e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	 */
1282e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	free_plinks = mesh_plink_availables(sdata);
1292e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
130472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (free_plinks != sdata->u.mesh.accepting_plinks)
131472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
1322e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
1332e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
134f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greeneint mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
1352e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
1362e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	int i;
1372e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
138472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
139472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (!sdata->u.mesh.rmc)
1402e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		return -ENOMEM;
141472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
1422e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	for (i = 0; i < RMC_BUCKETS; i++)
143472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
1442e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	return 0;
1452e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
1462e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
147f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greenevoid mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
1482e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
149472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct mesh_rmc *rmc = sdata->u.mesh.rmc;
1502e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	struct rmc_entry *p, *n;
1512e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	int i;
1522e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
153472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (!sdata->u.mesh.rmc)
1542e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		return;
1552e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1562e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	for (i = 0; i < RMC_BUCKETS; i++)
1572e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
1582e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			list_del(&p->list);
1592e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			kmem_cache_free(rm_cache, p);
1602e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		}
1612e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1622e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	kfree(rmc);
163472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	sdata->u.mesh.rmc = NULL;
1642e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
1652e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1662e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo/**
1672e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
1682e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
1692e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @sa:		source address
1702e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * @mesh_hdr:	mesh_header
1712e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
1722e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Returns: 0 if the frame is not in the cache, nonzero otherwise.
1732e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo *
1742e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * Checks using the source address and the mesh sequence number if we have
1752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * received this frame lately. If the frame is not in the cache, it is added to
1762e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo * it.
1772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo */
1782e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Coboint mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
179f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene		   struct ieee80211_sub_if_data *sdata)
1802e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
181472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct mesh_rmc *rmc = sdata->u.mesh.rmc;
1822e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	u32 seqnum = 0;
1832e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	int entries = 0;
1842e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	u8 idx;
1852e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	struct rmc_entry *p, *n;
1862e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
1872e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	/* Don't care about endianness since only match matters */
18851ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo	memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
18951ceddade0fb1e15f080b2555f3b3e1d68c6707eLuis Carlos Cobo	idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
1902e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
1912e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		++entries;
1922e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		if (time_after(jiffies, p->exp_time) ||
1932e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo				(entries == RMC_QUEUE_MAX_LEN)) {
1942e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			list_del(&p->list);
1952e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			kmem_cache_free(rm_cache, p);
1962e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			--entries;
197f64f9e719261a87818dd192a3a2352e5b20fbd0fJoe Perches		} else if ((seqnum == p->seqnum) &&
198f64f9e719261a87818dd192a3a2352e5b20fbd0fJoe Perches			   (memcmp(sa, p->sa, ETH_ALEN) == 0))
1992e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			return -1;
2002e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	}
2012e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
2022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
2032e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	if (!p) {
2042e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		printk(KERN_DEBUG "o11s: could not allocate RMC entry\n");
2052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		return 0;
2062e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	}
2072e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	p->seqnum = seqnum;
2082e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	p->exp_time = jiffies + RMC_TIMEOUT;
2092e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	memcpy(p->sa, sa, ETH_ALEN);
2102e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	list_add(&p->list, &rmc->bucket[idx].list);
2112e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	return 0;
2122e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
2132e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
214082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint
215082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
216082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{
217082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
218082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 *pos, neighbors;
219082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
220082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
221082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (skb_tailroom(skb) < 2 + meshconf_len)
222082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return -ENOMEM;
223082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
224082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	pos = skb_put(skb, 2 + meshconf_len);
225082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = WLAN_EID_MESH_CONFIG;
226082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = meshconf_len;
227082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
228082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Active path selection protocol ID */
229082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = ifmsh->mesh_pp_id;
230082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Active path selection metric ID   */
231082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = ifmsh->mesh_pm_id;
232082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Congestion control mode identifier */
233082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = ifmsh->mesh_cc_id;
234082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Synchronization protocol identifier */
235082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = ifmsh->mesh_sp_id;
236082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Authentication Protocol identifier */
237082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = ifmsh->mesh_auth_id;
238082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Mesh Formation Info - number of neighbors */
239082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	neighbors = atomic_read(&ifmsh->mshstats.estab_plinks);
240082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Number of neighbor mesh STAs or 15 whichever is smaller */
241082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	neighbors = (neighbors > 15) ? 15 : neighbors;
242082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = neighbors << 1;
243082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* Mesh capability */
244082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	ifmsh->accepting_plinks = mesh_plink_availables(sdata);
245082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos = MESHCONF_CAPAB_FORWARDING;
246082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ |= ifmsh->accepting_plinks ?
247082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	    MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
248082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = 0x00;
249082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
250082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
251082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen}
252082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
253082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint
254082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_meshid_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
255082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{
256082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
257082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 *pos;
258082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
259082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
260082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return -ENOMEM;
261082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
262082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
263082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = WLAN_EID_MESH_ID;
264082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = ifmsh->mesh_id_len;
265082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (ifmsh->mesh_id_len)
266082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
267082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
268082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
269082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen}
270082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
271082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint
272082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_vendor_ies(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
273082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{
274082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
275082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 offset, len;
276082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	const u8 *data;
277082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
278082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (!ifmsh->ie || !ifmsh->ie_len)
279082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return 0;
280082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
281082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* fast-forward to vendor IEs */
282082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
283082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
284082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (offset) {
285082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		len = ifmsh->ie_len - offset;
286082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		data = ifmsh->ie + offset;
287082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		if (skb_tailroom(skb) < len)
288082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen			return -ENOMEM;
289082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		memcpy(skb_put(skb, len), data, len);
290082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	}
291082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
292082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
293082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen}
294082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
295082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint
296082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_rsn_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
297082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{
298082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
299082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 len = 0;
300082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	const u8 *data;
301082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
302082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (!ifmsh->ie || !ifmsh->ie_len)
303082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return 0;
304082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
305082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	/* find RSN IE */
306082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	data = ifmsh->ie;
307082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	while (data < ifmsh->ie + ifmsh->ie_len) {
308082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		if (*data == WLAN_EID_RSN) {
309082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen			len = data[1] + 2;
310082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen			break;
311082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		}
312082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		data++;
313082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	}
314082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
315082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (len) {
316082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		if (skb_tailroom(skb) < len)
317082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen			return -ENOMEM;
318082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		memcpy(skb_put(skb, len), data, len);
319082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	}
320082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
321082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
322082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen}
323082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
324082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint
325082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_srates_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
3262e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
327f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene	struct ieee80211_local *local = sdata->local;
3282e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	struct ieee80211_supported_band *sband;
329082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	int rate;
330082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 i, rates, *pos;
3312e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
3322e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
333082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	rates = sband->n_bitrates;
334082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (rates > 8)
335082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		rates = 8;
336082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
337082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (skb_tailroom(skb) < rates + 2)
338082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return -ENOMEM;
339082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
340082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	pos = skb_put(skb, rates + 2);
3412e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	*pos++ = WLAN_EID_SUPP_RATES;
342082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	*pos++ = rates;
343082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	for (i = 0; i < rates; i++) {
3442e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		rate = sband->bitrates[i].bitrate;
3452e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		*pos++ = (u8) (rate / 5);
3462e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	}
3472e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
348082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
349082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen}
350082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
351082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint
352082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenmesh_add_ext_srates_ie(struct sk_buff *skb,
353082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		       struct ieee80211_sub_if_data *sdata)
354082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{
355082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_local *local = sdata->local;
356082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_supported_band *sband;
357082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	int rate;
358082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 i, exrates, *pos;
359082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
360082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
361082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	exrates = sband->n_bitrates;
362082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (exrates > 8)
363082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		exrates -= 8;
364082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	else
365082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		exrates = 0;
366082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
367082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (skb_tailroom(skb) < exrates + 2)
368082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return -ENOMEM;
369082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
370082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (exrates) {
371082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		pos = skb_put(skb, exrates + 2);
3722e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		*pos++ = WLAN_EID_EXT_SUPP_RATES;
373082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		*pos++ = exrates;
374082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		for (i = 8; i < sband->n_bitrates; i++) {
3752e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			rate = sband->bitrates[i].bitrate;
3762e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo			*pos++ = (u8) (rate / 5);
3772e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		}
3782e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	}
379082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
380082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen}
381082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
382082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersenint mesh_add_ds_params_ie(struct sk_buff *skb,
383082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen			  struct ieee80211_sub_if_data *sdata)
384082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen{
385082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_local *local = sdata->local;
386082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	struct ieee80211_supported_band *sband;
387082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	u8 *pos;
3882e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
389082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	if (skb_tailroom(skb) < 3)
390082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen		return -ENOMEM;
391082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen
392082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
393be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo	if (sband->band == IEEE80211_BAND_2GHZ) {
394be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo		pos = skb_put(skb, 2 + 1);
395be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo		*pos++ = WLAN_EID_DS_PARAMS;
396be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo		*pos++ = 1;
397be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo		*pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
398be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo	}
399be125c60e46e165fbfe33db36a4a9d943d560a5bRui Paulo
400082ebb0c258d28af7452b19df9ef8b7553f37690Thomas Pedersen	return 0;
4012e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
4022e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
4032e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobostatic void ieee80211_mesh_path_timer(unsigned long data)
4042e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo{
4052e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo	struct ieee80211_sub_if_data *sdata =
4062e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo		(struct ieee80211_sub_if_data *) data;
407472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
408133b822638ff01eb1e32e1917b197c40ed095dddJohannes Berg	struct ieee80211_local *local = sdata->local;
4092e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
4105bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	if (local->quiescing) {
4115bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
4125bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		return;
4135bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	}
4145bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
41564592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg	ieee80211_queue_work(&local->hw, &sdata->work);
4162e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo}
4172e3c8736820bf72a8ad10721c7e31d36d4fa7790Luis Carlos Cobo
418e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulostatic void ieee80211_mesh_path_root_timer(unsigned long data)
419e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo{
420e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	struct ieee80211_sub_if_data *sdata =
421e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		(struct ieee80211_sub_if_data *) data;
422e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
423e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	struct ieee80211_local *local = sdata->local;
424e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
425e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
426e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
427e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	if (local->quiescing) {
428e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
429e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		return;
430e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	}
431e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
43264592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg	ieee80211_queue_work(&local->hw, &sdata->work);
433e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo}
434e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
43563c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulovoid ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
43663c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo{
43763c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo	if (ifmsh->mshcfg.dot11MeshHWMPRootMode)
43863c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo		set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
43963c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo	else {
44063c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo		clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
44163c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo		/* stop running timer */
44263c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo		del_timer_sync(&ifmsh->mesh_path_root_timer);
44363c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo	}
44463c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo}
44563c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo
446902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg/**
4473c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
4483c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @hdr:    	802.11 frame header
4493c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @fc:		frame control field
4503c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @meshda:	destination address in the mesh
4513c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * @meshsa:	source address address in the mesh.  Same as TA, as frame is
4523c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona *              locally originated.
4533c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona *
4543c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona * Return the length of the 802.11 (does not include a mesh control header)
4553c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona */
45615ff63653e507ec928a4a4386405a82446e096b1Johannes Bergint ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
45715ff63653e507ec928a4a4386405a82446e096b1Johannes Berg				  const u8 *meshda, const u8 *meshsa)
45815ff63653e507ec928a4a4386405a82446e096b1Johannes Berg{
4593c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona	if (is_multicast_ether_addr(meshda)) {
4603c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
4613c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		/* DA TA SA */
4623c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memcpy(hdr->addr1, meshda, ETH_ALEN);
4633c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memcpy(hdr->addr2, meshsa, ETH_ALEN);
4643c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memcpy(hdr->addr3, meshsa, ETH_ALEN);
4653c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		return 24;
4663c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona	} else {
4673c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS |
4683c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona				IEEE80211_FCTL_TODS);
4693c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		/* RA TA DA SA */
4703c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memset(hdr->addr1, 0, ETH_ALEN);   /* RA is resolved later */
4713c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memcpy(hdr->addr2, meshsa, ETH_ALEN);
4723c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memcpy(hdr->addr3, meshda, ETH_ALEN);
4733c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		memcpy(hdr->addr4, meshsa, ETH_ALEN);
4743c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		return 30;
4753c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona	}
4763c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona}
4773c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona
4783c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona/**
479902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * ieee80211_new_mesh_header - create a new mesh header
480902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * @meshhdr:    uninitialized mesh header
481902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * @sdata:	mesh interface to be used
48261ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * @addr4or5:   1st address in the ae header, which may correspond to address 4
48361ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona *              (if addr6 is NULL) or address 5 (if addr6 is present). It may
48461ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona *              be NULL.
48561ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona * @addr6:	2nd address in the ae header, which corresponds to addr6 of the
48661ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona *              mesh frame
487902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg *
488902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg * Return the header length.
489902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg */
490902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Bergint ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
49161ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona		struct ieee80211_sub_if_data *sdata, char *addr4or5,
49261ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona		char *addr6)
493902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg{
4943c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona	int aelen = 0;
49561ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona	BUG_ON(!addr4or5 && addr6);
4960c3cee72a403e3b4992a5478c9c33d668c246c22Julia Lawall	memset(meshhdr, 0, sizeof(*meshhdr));
497472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
498472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
499472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	sdata->u.mesh.mesh_seqnum++;
50061ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona	if (addr4or5 && !addr6) {
5013c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		meshhdr->flags |= MESH_FLAGS_AE_A4;
5023c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		aelen += ETH_ALEN;
50361ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona		memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
50461ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona	} else if (addr4or5 && addr6) {
5053c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
5063c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona		aelen += 2 * ETH_ALEN;
50761ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona		memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
50861ad5394590c5c5338ab4ec50553d809a9996d50Javier Cardona		memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
5093c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona	}
5103c5772a5279de9eadfff7adb5ddea08106495fffJavier Cardona	return 6 + aelen;
511902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg}
512902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg
513472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
514472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg			   struct ieee80211_if_mesh *ifmsh)
515472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
516472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	bool free_plinks;
517472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
518472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
519472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	printk(KERN_DEBUG "%s: running mesh housekeeping\n",
52047846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg	       sdata->name);
521472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg#endif
522472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
523472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
524472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	mesh_path_expire(sdata);
525472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
526472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	free_plinks = mesh_plink_availables(sdata);
527472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (free_plinks != sdata->u.mesh.accepting_plinks)
5282d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
529472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
530472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	mod_timer(&ifmsh->housekeeping_timer,
531472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		  round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
532472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
533472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
534e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulostatic void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
535e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo{
536e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
537e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
538e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	mesh_path_tx_root_frame(sdata);
539e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	mod_timer(&ifmsh->mesh_path_root_timer,
540e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		  round_jiffies(jiffies + IEEE80211_MESH_RANN_INTERVAL));
541e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo}
542e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
5435bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#ifdef CONFIG_PM
5445bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
5455bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{
5465bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
5475bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
5485bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	/* use atomic bitops in case both timers fire at the same time */
5495bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
5505bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	if (del_timer_sync(&ifmsh->housekeeping_timer))
5515bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
5525bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	if (del_timer_sync(&ifmsh->mesh_path_timer))
5535bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
554e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	if (del_timer_sync(&ifmsh->mesh_path_root_timer))
555e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
5565bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg}
5575bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
5585bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Bergvoid ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
5595bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg{
5605bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
5615bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg
5625bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
5635bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		add_timer(&ifmsh->housekeeping_timer);
5645bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg	if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
5655bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg		add_timer(&ifmsh->mesh_path_timer);
566e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
567e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		add_timer(&ifmsh->mesh_path_root_timer);
56863c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo	ieee80211_mesh_root_setup(ifmsh);
5695bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg}
5705bb644a0fd25a5e083ecbfaa92a211db99aa6ef7Johannes Berg#endif
571472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
572472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
573472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
574472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
575472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_local *local = sdata->local;
576472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
57709b174702601079c3a04806754be30ffbd70db4dJohannes Berg	local->fif_other_bss++;
57809b174702601079c3a04806754be30ffbd70db4dJohannes Berg	/* mesh ifaces must set allmulti to forward mcast traffic */
57909b174702601079c3a04806754be30ffbd70db4dJohannes Berg	atomic_inc(&local->iff_allmultis);
58009b174702601079c3a04806754be30ffbd70db4dJohannes Berg	ieee80211_configure_filter(local);
58109b174702601079c3a04806754be30ffbd70db4dJohannes Berg
582c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona	ifmsh->mesh_cc_id = 0;	/* Disabled */
583c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona	ifmsh->mesh_sp_id = 0;	/* Neighbor Offset */
584c7108a7111cd9e592d6ad498be37276dbea75d2bJavier Cardona	ifmsh->mesh_auth_id = 0;	/* Disabled */
5856b9ac4425d6ec871faf54540e0f1c5ff420a8f29Rui Paulo	set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
58663c5723bc3af8d4e86984dd4ff0c78218de418d0Rui Paulo	ieee80211_mesh_root_setup(ifmsh);
58764592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg	ieee80211_queue_work(&local->hw, &sdata->work);
5885b365834255d7c90fc724b032c814dfa297aacf9Javier Cardona	sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
5892d0ddec5b2b859f06116f631fc0ffe94fbceb556Johannes Berg	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
5905b365834255d7c90fc724b032c814dfa297aacf9Javier Cardona						BSS_CHANGED_BEACON_ENABLED |
5915b365834255d7c90fc724b032c814dfa297aacf9Javier Cardona						BSS_CHANGED_BEACON_INT);
592472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
593472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
594472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
595472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
59609b174702601079c3a04806754be30ffbd70db4dJohannes Berg	struct ieee80211_local *local = sdata->local;
59729cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
59829cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg
59929cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg	ifmsh->mesh_id_len = 0;
60029cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
60129cbe68c516a48a9a88b3226878570c6cbd83c02Johannes Berg	sta_info_flush(local, NULL);
60209b174702601079c3a04806754be30ffbd70db4dJohannes Berg
603472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	del_timer_sync(&sdata->u.mesh.housekeeping_timer);
604e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
605472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	/*
606b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg	 * If the timer fired while we waited for it, it will have
607b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg	 * requeued the work. Now the work will be running again
608b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg	 * but will not rearm the timer again because it checks
609b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg	 * whether the interface is running, which, at this point,
610b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg	 * it no longer is.
611b7413430d4d2a6168e68231d9f93763047b6d60cJohannes Berg	 */
61264592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg	cancel_work_sync(&sdata->work);
61309b174702601079c3a04806754be30ffbd70db4dJohannes Berg
61409b174702601079c3a04806754be30ffbd70db4dJohannes Berg	local->fif_other_bss--;
61509b174702601079c3a04806754be30ffbd70db4dJohannes Berg	atomic_dec(&local->iff_allmultis);
61609b174702601079c3a04806754be30ffbd70db4dJohannes Berg	ieee80211_configure_filter(local);
617472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
618472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
619472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
620472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					u16 stype,
621472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					struct ieee80211_mgmt *mgmt,
622472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					size_t len,
623472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					struct ieee80211_rx_status *rx_status)
624472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
625c6a1fa12d206882757264869f8e32d606b930e2aJohannes Berg	struct ieee80211_local *local = sdata->local;
626472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee802_11_elems elems;
627472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_channel *channel;
628881d948c23442173a011f1adcfe4c95bf7f27515Johannes Berg	u32 supp_rates = 0;
629472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	size_t baselen;
630472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	int freq;
631472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	enum ieee80211_band band = rx_status->band;
632472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
633472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	/* ignore ProbeResp to foreign address */
634472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (stype == IEEE80211_STYPE_PROBE_RESP &&
63547846c9b0c10808d9337d2e7d09361f3e0a0a71aJohannes Berg	    compare_ether_addr(mgmt->da, sdata->vif.addr))
636472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		return;
637472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
638472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
639472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (baselen > len)
640472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		return;
641472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
642472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
643472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg			       &elems);
644472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
6455cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona	/* ignore beacons from secure mesh peers if our security is off */
646b130e5cec958bae3867cf6ab09a9b24ba8fada01Javier Cardona	if (elems.rsn_len && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE)
6475cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona		return;
6485cff5e01e818029a5d2c3c31b7ae5e5e7ee70452Javier Cardona
649472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (elems.ds_params && elems.ds_params_len == 1)
65059eb21a6504731fc16db4cf9463065dd61093e08Bruno Randolf		freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
651472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	else
652472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		freq = rx_status->freq;
653472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
654472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	channel = ieee80211_get_channel(local->hw.wiphy, freq);
655472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
656472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
657472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		return;
658472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
659472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (elems.mesh_id && elems.mesh_config &&
660472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	    mesh_matches_local(&elems, sdata)) {
661472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		supp_rates = ieee80211_sta_get_rates(local, &elems, band);
6621570ca59279a74db73b8ff840abdfaf64a9ee2ffJavier Cardona		mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
663472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	}
664472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
665472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
666472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergstatic void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
667472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					  struct ieee80211_mgmt *mgmt,
668472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					  size_t len,
669472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					  struct ieee80211_rx_status *rx_status)
670472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
671472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	switch (mgmt->u.action.category) {
6728db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen	case WLAN_CATEGORY_SELF_PROTECTED:
6738db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen		switch (mgmt->u.action.u.self_prot.action_code) {
6748db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen		case WLAN_SP_MESH_PEERING_OPEN:
6758db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen		case WLAN_SP_MESH_PEERING_CLOSE:
6768db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen		case WLAN_SP_MESH_PEERING_CONFIRM:
6778db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen			mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
6788db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen			break;
6798db098507c5cbe499061d0f6aea426a36e7c72d7Thomas Pedersen		}
680472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		break;
68125d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen	case WLAN_CATEGORY_MESH_ACTION:
68225d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen		if (mesh_action_is_path_sel(mgmt))
68325d49e4d63564c7004a4d6735d1d8c3cc41a7394Thomas Pedersen			mesh_rx_path_sel_frame(sdata, mgmt, len);
684472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		break;
685472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	}
686472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
687472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
6881fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
6891fa57d017366fb26b58af110a38b36a4f0214a62Johannes Berg				   struct sk_buff *skb)
690472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
691472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_rx_status *rx_status;
692472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_mgmt *mgmt;
693472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	u16 stype;
694472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
695f1d58c2521eb160178b2151d6326d8dc5d7c8560Johannes Berg	rx_status = IEEE80211_SKB_RXCB(skb);
696472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	mgmt = (struct ieee80211_mgmt *) skb->data;
697472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
698472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
699472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	switch (stype) {
700472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	case IEEE80211_STYPE_PROBE_RESP:
701472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	case IEEE80211_STYPE_BEACON:
702472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
703472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg					    rx_status);
704472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		break;
705472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	case IEEE80211_STYPE_ACTION:
706472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
707472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		break;
708472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	}
709472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
710472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
7111fa57d017366fb26b58af110a38b36a4f0214a62Johannes Bergvoid ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
712472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
713472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
714472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
715472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	if (ifmsh->preq_queue_len &&
716472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	    time_after(jiffies,
717472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		       ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
718472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		mesh_path_start_discovery(sdata);
719472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
72018889231e4527dfe23145efe318e74744794a95dJavier Cardona	if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
72118889231e4527dfe23145efe318e74744794a95dJavier Cardona		mesh_mpath_table_grow();
72218889231e4527dfe23145efe318e74744794a95dJavier Cardona
723dcac908babcd8ce21057e476c8df609b28ad2cd8Nick Ledovskikh	if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
72418889231e4527dfe23145efe318e74744794a95dJavier Cardona		mesh_mpp_table_grow();
72518889231e4527dfe23145efe318e74744794a95dJavier Cardona
72618889231e4527dfe23145efe318e74744794a95dJavier Cardona	if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
727472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		ieee80211_mesh_housekeeping(sdata, ifmsh);
728e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo
729e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
730e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		ieee80211_mesh_rootpath(sdata);
731472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
732472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
733472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Bergvoid ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
734472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg{
735472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_sub_if_data *sdata;
736472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
737472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	rcu_read_lock();
738472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	list_for_each_entry_rcu(sdata, &local->interfaces, list)
739472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		if (ieee80211_vif_is_mesh(&sdata->vif))
74064592c8fc0e99d445fc3fdedddeb6088e20086f1Johannes Berg			ieee80211_queue_work(&local->hw, &sdata->work);
741472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	rcu_read_unlock();
742472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
743472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
744902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Bergvoid ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
745902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg{
746472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
747472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
748472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	setup_timer(&ifmsh->housekeeping_timer,
749472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		    ieee80211_mesh_housekeeping_timer,
750472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg		    (unsigned long) sdata);
751472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg
752472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	ifmsh->accepting_plinks = true;
753472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	ifmsh->preq_id = 0;
754d19b3bf6384e66ac6e11a61ee31ed2cfe149f4d8Rui Paulo	ifmsh->sn = 0;
755472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	atomic_set(&ifmsh->mpaths, 0);
756f698d856f65c3fea091cc303a135967965c5b880Jasper Bryant-Greene	mesh_rmc_init(sdata);
757472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	ifmsh->last_preq = jiffies;
758902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg	/* Allocate all mesh structures when creating the first mesh interface. */
759902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg	if (!mesh_allocated)
760902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg		ieee80211s_init();
761472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	setup_timer(&ifmsh->mesh_path_timer,
762902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg		    ieee80211_mesh_path_timer,
763902acc7896d7649fb30e4b22bd4e643c7f34b02cJohannes Berg		    (unsigned long) sdata);
764e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo	setup_timer(&ifmsh->mesh_path_root_timer,
765e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		    ieee80211_mesh_path_root_timer,
766e304bfd30f356f7b75d30cad0029ecca705fd590Rui Paulo		    (unsigned long) sdata);
767472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	INIT_LIST_HEAD(&ifmsh->preq_queue.list);
768472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg	spin_lock_init(&ifmsh->mesh_preq_queue_lock);
769472dbc45dc1966284de72d7de15690c17ed2cf33Johannes Berg}
770