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Commit 5815814b authored by Javier Cardona's avatar Javier Cardona Committed by John W. Linville
Browse files

mac80211: Early detection of broken mesh paths when using minstrel. 



This change triggers a path discovery as soon as the link quality degrades
below a certain threshold.  This results in a faster path recovery time than
by simply relying on the periodic path refresh mechanism to detect broken
links.

Signed-off-by: default avatarJavier Cardona <javier@cozybit.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d403a1c6

net/mac80211/rc80211_minstrel.c

+7 −1
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ 
#include <linux/random.h>

#include <linux/ieee80211.h>

#include <net/mac80211.h>

#include "mesh.h"

#include "rate.h"

#include "rc80211_minstrel.h"
@@ -178,9 +179,14 @@ minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband, 


		if ((i != IEEE80211_TX_MAX_RATES - 1) && (ar[i + 1].idx < 0)) {

			mi->r[ndx].success += success;

			if (si)

			if (si) {

				si->fail_avg = (18050 - mi->r[ndx].probability)

					/ 180;

				WARN_ON(si->fail_avg > 100);

				if (si->fail_avg == 100 &&

					ieee80211_vif_is_mesh(&si->sdata->vif))

					mesh_plink_broken(si);

			}

		}

	}