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authorJavier Cardona <javier@cozybit.com>2009-08-18 04:15:55 +0400
committerJohn W. Linville <linville@tuxdriver.com>2009-08-20 19:36:02 +0400
commitbfc32e6a9559d3e30925929cd9a9df7498f325db (patch)
treef0e5f1bdf902fe463fa994d44cafcab39b357380 /net/mac80211/rc80211_minstrel.c
parent92ed48e5230e8f5906dda0cc31715b3b7e3fe303 (diff)
downloadlinux-bfc32e6a9559d3e30925929cd9a9df7498f325db.tar.xz
mac80211: Decouple fail_avg stats used by mesh from rate control algorithm.
Mesh uses the tx failure average to compute the (m)path metric. This used to be done inside the rate control module. This patch breaks the dependency between the mesh stack and the rate control algorithm. Mesh will now work independently of the chosen rate control algorithm. The mesh stack keeps a moving average of the average transmission losses for each mesh peer station. If the fail average exceeds a certain threshold, the peer link is marked as broken. Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rc80211_minstrel.c')
-rw-r--r--net/mac80211/rc80211_minstrel.c16
1 files changed, 1 insertions, 15 deletions
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index 007164919e02..7c5142988bbb 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -51,7 +51,6 @@
#include <linux/random.h>
#include <linux/ieee80211.h>
#include <net/mac80211.h>
-#include "mesh.h"
#include "rate.h"
#include "rc80211_minstrel.h"
@@ -156,16 +155,12 @@ minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
struct sk_buff *skb)
{
struct minstrel_sta_info *mi = priv_sta;
- struct minstrel_priv *mp = (struct minstrel_priv *)priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *ar = info->status.rates;
- struct ieee80211_local *local = hw_to_local(mp->hw);
- struct sta_info *si;
int i, ndx;
int success;
success = !!(info->flags & IEEE80211_TX_STAT_ACK);
- si = sta_info_get(local, sta->addr);
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
if (ar[i].idx < 0)
@@ -177,17 +172,8 @@ minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
mi->r[ndx].attempts += ar[i].count;
- if ((i != IEEE80211_TX_MAX_RATES - 1) && (ar[i + 1].idx < 0)) {
+ if ((i != IEEE80211_TX_MAX_RATES - 1) && (ar[i + 1].idx < 0))
mi->r[ndx].success += success;
- 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);
- }
- }
}
if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) && (i >= 0))