Release 4.11 net/mac80211/mesh.c

/*
 * Copyright (c) 2008, 2009 open80211s Ltd.
 * Authors:    Luis Carlos Cobo <luisca@cozybit.com>
 *             Javier Cardona <javier@cozybit.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/slab.h>
#include <asm/unaligned.h>
#include "ieee80211_i.h"
#include "mesh.h"
#include "driver-ops.h"


static int mesh_allocated;

static struct kmem_cache *rm_cache;



bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
{
	return (mgmt->u.action.u.mesh_action.action_code ==
			WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
}

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void ieee80211s_init(void)
{
	mesh_allocated = 1;
	rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
				     0, 0, NULL);
}

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void ieee80211s_stop(void)
{
	if (!mesh_allocated)
		return;
	kmem_cache_destroy(rm_cache);
}

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6
33.33%
1
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18
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static void ieee80211_mesh_housekeeping_timer(unsigned long data)
{
	struct ieee80211_sub_if_data *sdata = (void *) data;
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;

	set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);

	ieee80211_queue_work(&local->hw, &sdata->work);
}

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Johannes Berg
56
86.15%
2
33.33%
Rui Paulo
6
9.23%
1
16.67%
Luis R. Rodriguez
2
3.08%
2
33.33%
Javier Cardona
1
1.54%
1
16.67%
Total
65
100.00%
6
100.00%

/**
 * mesh_matches_local - check if the config of a mesh point matches ours
 *
 * @sdata: local mesh subif
 * @ie: information elements of a management frame from the mesh peer
 *
 * This function checks if the mesh configuration of a mesh point matches the
 * local mesh configuration, i.e. if both nodes belong to the same mesh network.
 */


bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
			struct ieee802_11_elems *ie)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u32 basic_rates = 0;
	struct cfg80211_chan_def sta_chan_def;

	/*
         * As support for each feature is added, check for matching
         * - On mesh config capabilities
         *   - Power Save Support En
         *   - Sync support enabled
         *   - Sync support active
         *   - Sync support required from peer
         *   - MDA enabled
         * - Power management control on fc
         */
	if (!(ifmsh->mesh_id_len == ie->mesh_id_len &&
	     memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
	     (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
	     (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
	     (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
	     (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
	     (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
		return false;

	ieee80211_sta_get_rates(sdata, ie, ieee80211_get_sdata_band(sdata),
				&basic_rates);

	if (sdata->vif.bss_conf.basic_rates != basic_rates)
		return false;

	cfg80211_chandef_create(&sta_chan_def, sdata->vif.bss_conf.chandef.chan,
				NL80211_CHAN_NO_HT);
	ieee80211_chandef_ht_oper(ie->ht_operation, &sta_chan_def);
	ieee80211_chandef_vht_oper(ie->vht_operation, &sta_chan_def);

	if (!cfg80211_chandef_compatible(&sdata->vif.bss_conf.chandef,
					 &sta_chan_def))
		return false;

	return true;
}

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66
29.73%
6
31.58%
Luis Carlos Cobo Rus
65
29.28%
2
10.53%
Rui Paulo
25
11.26%
2
10.53%
Thomas Pedersen
24
10.81%
2
10.53%
Ashok Nagarajan
16
7.21%
3
15.79%
Javier Cardona
14
6.31%
1
5.26%
Bob Copeland
9
4.05%
1
5.26%
Jasper Bryant-Greene
2
0.90%
1
5.26%
Simon Wunderlich
1
0.45%
1
5.26%
Total
222
100.00%
19
100.00%

/**
 * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
 *
 * @ie: information elements of a management frame from the mesh peer
 */


bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
{
	return (ie->mesh_config->meshconf_cap &
			IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
}

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Luis Carlos Cobo Rus
20
86.96%
1
33.33%
Rui Paulo
2
8.70%
1
33.33%
Marco Porsch
1
4.35%
1
33.33%
Total
23
100.00%
3
100.00%

/**
 * mesh_accept_plinks_update - update accepting_plink in local mesh beacons
 *
 * @sdata: mesh interface in which mesh beacons are going to be updated
 *
 * Returns: beacon changed flag if the beacon content changed.
 */


u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
{
	bool free_plinks;
	u32 changed = 0;

	/* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
         * the mesh interface might be able to establish plinks with peers that
         * are already on the table but are not on PLINK_ESTAB state. However,
         * in general the mesh interface is not accepting peer link requests
         * from new peers, and that must be reflected in the beacon
         */
	free_plinks = mesh_plink_availables(sdata);

	if (free_plinks != sdata->u.mesh.accepting_plinks) {
		sdata->u.mesh.accepting_plinks = free_plinks;
		changed = BSS_CHANGED_BEACON;
	}

	return changed;
}

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Luis Carlos Cobo Rus
31
54.39%
2
40.00%
Marco Porsch
23
40.35%
1
20.00%
Johannes Berg
3
5.26%
2
40.00%
Total
57
100.00%
5
100.00%

/*
 * mesh_sta_cleanup - clean up any mesh sta state
 *
 * @sta: mesh sta to clean up.
 */


void mesh_sta_cleanup(struct sta_info *sta)
{
	struct ieee80211_sub_if_data *sdata = sta->sdata;
	u32 changed = mesh_plink_deactivate(sta);

	if (changed)
		ieee80211_mbss_info_change_notify(sdata, changed);
}

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Thomas Pedersen
36
94.74%
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Jouni Malinen
1
2.63%
1
25.00%
Bob Copeland
1
2.63%
1
25.00%
Total
38
100.00%
4
100.00%



int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
{
	int i;

	sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
	if (!sdata->u.mesh.rmc)
		return -ENOMEM;
	sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
	for (i = 0; i < RMC_BUCKETS; i++)
		INIT_HLIST_HEAD(&sdata->u.mesh.rmc->bucket[i]);
	return 0;
}

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Luis Carlos Cobo Rus
87
92.55%
1
25.00%
Johannes Berg
4
4.26%
1
25.00%
Jasper Bryant-Greene
2
2.13%
1
25.00%
Bob Copeland
1
1.06%
1
25.00%
Total
94
100.00%
4
100.00%



void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
{
	struct mesh_rmc *rmc = sdata->u.mesh.rmc;
	struct rmc_entry *p;
	struct hlist_node *n;
	int i;

	if (!sdata->u.mesh.rmc)
		return;

	for (i = 0; i < RMC_BUCKETS; i++) {
		hlist_for_each_entry_safe(p, n, &rmc->bucket[i], list) {
			hlist_del(&p->list);
			kmem_cache_free(rm_cache, p);
		}
	}

	kfree(rmc);
	sdata->u.mesh.rmc = NULL;
}

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Luis Carlos Cobo Rus
92
87.62%
1
16.67%
Bob Copeland
5
4.76%
1
16.67%
Johannes Berg
5
4.76%
2
33.33%
Jasper Bryant-Greene
2
1.90%
1
16.67%
Thomas Pedersen
1
0.95%
1
16.67%
Total
105
100.00%
6
100.00%

/**
 * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
 *
 * @sdata:      interface
 * @sa:         source address
 * @mesh_hdr:   mesh_header
 *
 * Returns: 0 if the frame is not in the cache, nonzero otherwise.
 *
 * Checks using the source address and the mesh sequence number if we have
 * received this frame lately. If the frame is not in the cache, it is added to
 * it.
 */


int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
		   const u8 *sa, struct ieee80211s_hdr *mesh_hdr)
{
	struct mesh_rmc *rmc = sdata->u.mesh.rmc;
	u32 seqnum = 0;
	int entries = 0;
	u8 idx;
	struct rmc_entry *p;
	struct hlist_node *n;

	if (!rmc)
		return -1;

	/* Don't care about endianness since only match matters */
	memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
	idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
	hlist_for_each_entry_safe(p, n, &rmc->bucket[idx], list) {
		++entries;
		if (time_after(jiffies, p->exp_time) ||
		    entries == RMC_QUEUE_MAX_LEN) {
			hlist_del(&p->list);
			kmem_cache_free(rm_cache, p);
			--entries;
		} else if ((seqnum == p->seqnum) && ether_addr_equal(sa, p->sa))
			return -1;
	}

	p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
	if (!p)
		return 0;

	p->seqnum = seqnum;
	p->exp_time = jiffies + RMC_TIMEOUT;
	memcpy(p->sa, sa, ETH_ALEN);
	hlist_add_head(&p->list, &rmc->bucket[idx]);
	return 0;
}

Contributors
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Luis Carlos Cobo Rus
206
88.79%
2
22.22%
Bob Copeland
15
6.47%
2
22.22%
Johannes Berg
7
3.02%
2
22.22%
Jasper Bryant-Greene
2
0.86%
1
11.11%
Joe Perches
1
0.43%
1
11.11%
Thomas Pedersen
1
0.43%
1
11.11%
Total
232
100.00%
9
100.00%



int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
			 struct sk_buff *skb)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u8 *pos, neighbors;
	u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);

	if (skb_tailroom(skb) < 2 + meshconf_len)
		return -ENOMEM;

	pos = skb_put(skb, 2 + meshconf_len);
	*pos++ = WLAN_EID_MESH_CONFIG;
	*pos++ = meshconf_len;

	/* save a pointer for quick updates in pre-tbtt */
	ifmsh->meshconf_offset = pos - skb->data;

	/* Active path selection protocol ID */
	*pos++ = ifmsh->mesh_pp_id;
	/* Active path selection metric ID   */
	*pos++ = ifmsh->mesh_pm_id;
	/* Congestion control mode identifier */
	*pos++ = ifmsh->mesh_cc_id;
	/* Synchronization protocol identifier */
	*pos++ = ifmsh->mesh_sp_id;
	/* Authentication Protocol identifier */
	*pos++ = ifmsh->mesh_auth_id;
	/* Mesh Formation Info - number of neighbors */
	neighbors = atomic_read(&ifmsh->estab_plinks);
	neighbors = min_t(int, neighbors, IEEE80211_MAX_MESH_PEERINGS);
	*pos++ = neighbors << 1;
	/* Mesh capability */
	*pos = 0x00;
	*pos |= ifmsh->mshcfg.dot11MeshForwarding ?
			IEEE80211_MESHCONF_CAPAB_FORWARDING : 0x00;
	*pos |= ifmsh->accepting_plinks ?
			IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
	/* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
	*pos |= ifmsh->ps_peers_deep_sleep ?
			IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL : 0x00;
	return 0;
}

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Thomas Pedersen
89
42.18%
2
18.18%
Luis Carlos Cobo Rus
72
34.12%
1
9.09%
Marco Porsch
14
6.64%
2
18.18%
Chun-Yeow Yeoh
13
6.16%
1
9.09%
Rui Paulo
10
4.74%
2
18.18%
Jacob Minshall
7
3.32%
1
9.09%
Johannes Berg
5
2.37%
1
9.09%
Jasper Bryant-Greene
1
0.47%
1
9.09%
Total
211
100.00%
11
100.00%



int mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u8 *pos;

	if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
		return -ENOMEM;

	pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
	*pos++ = WLAN_EID_MESH_ID;
	*pos++ = ifmsh->mesh_id_len;
	if (ifmsh->mesh_id_len)
		memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);

	return 0;
}

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Thomas Pedersen
51
52.58%
1
33.33%
Luis Carlos Cobo Rus
41
42.27%
1
33.33%
Johannes Berg
5
5.15%
1
33.33%
Total
97
100.00%
3
100.00%



static int mesh_add_awake_window_ie(struct ieee80211_sub_if_data *sdata,
				    struct sk_buff *skb)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u8 *pos;

	/* see IEEE802.11-2012 13.14.6 */
	if (ifmsh->ps_peers_light_sleep == 0 &&
	    ifmsh->ps_peers_deep_sleep == 0 &&
	    ifmsh->nonpeer_pm == NL80211_MESH_POWER_ACTIVE)
		return 0;

	if (skb_tailroom(skb) < 4)
		return -ENOMEM;

	pos = skb_put(skb, 2 + 2);
	*pos++ = WLAN_EID_MESH_AWAKE_WINDOW;
	*pos++ = 2;
	put_unaligned_le16(ifmsh->mshcfg.dot11MeshAwakeWindowDuration, pos);

	return 0;
}

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Marco Porsch
101
95.28%
1
50.00%
Johannes Berg
5
4.72%
1
50.00%
Total
106
100.00%
2
100.00%



int mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata,
			struct sk_buff *skb)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u8 offset, len;
	const u8 *data;

	if (!ifmsh->ie || !ifmsh->ie_len)
		return 0;

	/* fast-forward to vendor IEs */
	offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);

	if (offset < ifmsh->ie_len) {
		len = ifmsh->ie_len - offset;
		data = ifmsh->ie + offset;
		if (skb_tailroom(skb) < len)
			return -ENOMEM;
		memcpy(skb_put(skb, len), data, len);
	}

	return 0;
}

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CommitProp
Thomas Pedersen
99
79.84%
1
14.29%
Luis Carlos Cobo Rus
7
5.65%
1
14.29%
Johannes Berg
6
4.84%
2
28.57%
Javier Cardona
5
4.03%
1
14.29%
Thorsten Horstmann
4
3.23%
1
14.29%
Rui Paulo
3
2.42%
1
14.29%
Total
124
100.00%
7
100.00%



int mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u8 len = 0;
	const u8 *data;

	if (!ifmsh->ie || !ifmsh->ie_len)
		return 0;

	/* find RSN IE */
	data = cfg80211_find_ie(WLAN_EID_RSN, ifmsh->ie, ifmsh->ie_len);
	if (!data)
		return 0;

	len = data[1] + 2;

	if (skb_tailroom(skb) < len)
		return -ENOMEM;
	memcpy(skb_put(skb, len), data, len);

	return 0;
}

Contributors
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CommitProp
Thomas Pedersen
98
85.22%
1
25.00%
Bob Copeland
11
9.57%
1
25.00%
Johannes Berg
5
4.35%
1
25.00%
Rui Paulo
1
0.87%
1
25.00%
Total
115
100.00%
4
100.00%



static int mesh_add_ds_params_ie(struct ieee80211_sub_if_data *sdata,
				 struct sk_buff *skb)
{
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct ieee80211_channel *chan;
	u8 *pos;

	if (skb_tailroom(skb) < 3)
		return -ENOMEM;

	rcu_read_lock();
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		return -EINVAL;
	}
	chan = chanctx_conf->def.chan;
	rcu_read_unlock();

	pos = skb_put(skb, 2 + 1);
	*pos++ = WLAN_EID_DS_PARAMS;
	*pos++ = 1;
	*pos++ = ieee80211_frequency_to_channel(chan->center_freq);

	return 0;
}

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Johannes Berg
57
46.72%
4
57.14%
Thomas Pedersen
46
37.70%
1
14.29%
Javier Cardona
18
14.75%
1
14.29%
Luis Carlos Cobo Rus
1
0.82%
1
14.29%
Total
122
100.00%
7
100.00%



int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
		       struct sk_buff *skb)
{
	struct ieee80211_local *local = sdata->local;
	enum nl80211_band band = ieee80211_get_sdata_band(sdata);
	struct ieee80211_supported_band *sband;
	u8 *pos;

	sband = local->hw.wiphy->bands[band];
	if (!sband->ht_cap.ht_supported ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
		return 0;

	if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
		return -ENOMEM;

	pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
	ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap);

	return 0;
}

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Thomas Pedersen
107
68.59%
1
12.50%
Simon Wunderlich
24
15.38%
1
12.50%
Johannes Berg
22
14.10%
5
62.50%
Ben Greear
3
1.92%
1
12.50%
Total
156
100.00%
8
100.00%



int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata,
			struct sk_buff *skb)
{
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct ieee80211_channel *channel;
	struct ieee80211_supported_band *sband;
	struct ieee80211_sta_ht_cap *ht_cap;
	u8 *pos;

	rcu_read_lock();
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		return -EINVAL;
	}
	channel = chanctx_conf->def.chan;
	rcu_read_unlock();

	sband = local->hw.wiphy->bands[channel->band];
	ht_cap = &sband->ht_cap;

	if (!ht_cap->ht_supported ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
		return 0;

	if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_operation))
		return -ENOMEM;

	pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation));
	ieee80211_ie_build_ht_oper(pos, ht_cap, &sdata->vif.bss_conf.chandef,
				   sdata->vif.bss_conf.ht_operation_mode,
				   false);

	return 0;
}

Contributors
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CommitProp
Thomas Pedersen
99
44.80%
1
12.50%
Johannes Berg
78
35.29%
4
50.00%
Bob Copeland
34
15.38%
1
12.50%
Ashok Nagarajan
8
3.62%
1
12.50%
Arik Nemtsov
2
0.90%
1
12.50%
Total
221
100.00%
8
100.00%



int mesh_add_vht_cap_ie(struct ieee80211_sub_if_data *sdata,
			struct sk_buff *skb)
{
	struct ieee80211_local *local = sdata->local;
	enum nl80211_band band = ieee80211_get_sdata_band(sdata);
	struct ieee80211_supported_band *sband;
	u8 *pos;

	sband = local->hw.wiphy->bands[band];
	if (!sband->vht_cap.vht_supported ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
		return 0;

	if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_cap))
		return -ENOMEM;

	pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_cap));
	ieee80211_ie_build_vht_cap(pos, &sband->vht_cap, sband->vht_cap.cap);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Bob Copeland
155
99.36%
1
50.00%
Johannes Berg
1
0.64%
1
50.00%
Total
156
100.00%
2
100.00%



int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data *sdata,
			 struct sk_buff *skb)
{
	struct ieee80211_local *local = sdata->local;
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct ieee80211_channel *channel;
	struct ieee80211_supported_band *sband;
	struct ieee80211_sta_vht_cap *vht_cap;
	u8 *pos;

	rcu_read_lock();
	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
	if (WARN_ON(!chanctx_conf)) {
		rcu_read_unlock();
		return -EINVAL;
	}
	channel = chanctx_conf->def.chan;
	rcu_read_unlock();

	sband = local->hw.wiphy->bands[channel->band];
	vht_cap = &sband->vht_cap;

	if (!vht_cap->vht_supported ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
	    sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
		return 0;

	if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_vht_operation))
		return -ENOMEM;

	pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_operation));
	ieee80211_ie_build_vht_oper(pos, vht_cap,
				    &sdata->vif.bss_conf.chandef);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Bob Copeland
211
100.00%
1
100.00%
Total
211
100.00%
1
100.00%



static void ieee80211_mesh_path_timer(unsigned long data)
{
	struct ieee80211_sub_if_data *sdata =
		(struct ieee80211_sub_if_data *) data;

	ieee80211_queue_work(&sdata->local->hw, &sdata->work);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Luis Carlos Cobo Rus
32
86.49%
1
20.00%
Luis R. Rodriguez
2
5.41%
2
40.00%
Stanislaw Gruszka
2
5.41%
1
20.00%
Johannes Berg
1
2.70%
1
20.00%
Total
37
100.00%
5
100.00%



static void ieee80211_mesh_path_root_timer(unsigned long data)
{
	struct ieee80211_sub_if_data *sdata =
		(struct ieee80211_sub_if_data *) data;
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;

	set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);

	ieee80211_queue_work(&sdata->local->hw, &sdata->work);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rui Paulo
56
94.92%
1
33.33%
Stanislaw Gruszka
2
3.39%
1
33.33%
Johannes Berg
1
1.69%
1
33.33%
Total
59
100.00%
3
100.00%



void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
{
	if (ifmsh->mshcfg.dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)
		set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
	else {
		clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
		/* stop running timer */
		del_timer_sync(&ifmsh->mesh_path_root_timer);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Rui Paulo
50
96.15%
1
50.00%
Chun-Yeow Yeoh
2
3.85%
1
50.00%
Total
52
100.00%
2
100.00%

/**
 * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
 * @hdr:        802.11 frame header
 * @fc:         frame control field
 * @meshda:     destination address in the mesh
 * @meshsa:     source address address in the mesh.  Same as TA, as frame is
 *              locally originated.
 *
 * Return the length of the 802.11 (does not include a mesh control header)
 */


int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
				  const u8 *meshda, const u8 *meshsa)
{
	if (is_multicast_ether_addr(meshda)) {
		*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
		/* DA TA SA */
		memcpy(hdr->addr1, meshda, ETH_ALEN);
		memcpy(hdr->addr2, meshsa, ETH_ALEN);
		memcpy(hdr->addr3, meshsa, ETH_ALEN);
		return 24;
	} else {
		*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
		/* RA TA DA SA */
		eth_zero_addr(hdr->addr1);   /* RA is resolved later */
		memcpy(hdr->addr2, meshsa, ETH_ALEN);
		memcpy(hdr->addr3, meshda, ETH_ALEN);
		memcpy(hdr->addr4, meshsa, ETH_ALEN);
		return 30;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Javier Cardona
131
96.32%
1
33.33%
Johannes Berg
4
2.94%
1
33.33%
Joe Perches
1
0.74%
1
33.33%
Total
136
100.00%
3
100.00%

/**
 * ieee80211_new_mesh_header - create a new mesh header
 * @sdata:      mesh interface to be used
 * @meshhdr:    uninitialized mesh header
 * @addr4or5:   1st address in the ae header, which may correspond to address 4
 *              (if addr6 is NULL) or address 5 (if addr6 is present). It may
 *              be NULL.
 * @addr6:      2nd address in the ae header, which corresponds to addr6 of the
 *              mesh frame
 *
 * Return the header length.
 */


unsigned int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
				       struct ieee80211s_hdr *meshhdr,
				       const char *addr4or5, const char *addr6)
{
	if (WARN_ON(!addr4or5 && addr6))
		return 0;

	memset(meshhdr, 0, sizeof(*meshhdr));

	meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;

	/* FIXME: racy -- TX on multiple queues can be concurrent */
	put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
	sdata->u.mesh.mesh_seqnum++;

	if (addr4or5 && !addr6) {
		meshhdr->flags |= MESH_FLAGS_AE_A4;
		memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
		return 2 * ETH_ALEN;
	} else if (addr4or5 && addr6) {
		meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
		memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
		memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
		return 3 * ETH_ALEN;
	}

	return ETH_ALEN;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Javier Cardona
86
50.29%
2
25.00%
Johannes Berg
75
43.86%
3
37.50%
Luis Carlos Cobo Rus
8
4.68%
1
12.50%
Andrzej Hajda
1
0.58%
1
12.50%
Julia Lawall
1
0.58%
1
12.50%
Total
171
100.00%
8
100.00%



static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata)
{
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	u32 changed;

	if (ifmsh->mshcfg.plink_timeout > 0)
		ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ);
	mesh_path_expire(sdata);

	changed = mesh_accept_plinks_update(sdata);
	ieee80211_mbss_info_change_notify(sdata, changed);

	mod_timer(&ifmsh->housekeeping_timer,
		  round_jiffies(jiffies +
				IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Johannes Berg
60
72.29%
3
42.86%
Masashi Honma
10
12.05%
1
14.29%
Colleen Twitty
7
8.43%
1
14.29%
Marco Porsch
5
6.02%
1
14.29%
Thomas Pedersen
1
1.20%
1
14.29%
Total
83
100.00%
7
100.00%



static void ieee80211_mesh_rootpath(struct