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mac80211: make beacon-loss-count configurable

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On loaded systems with lots of VIFs, I see lots of beacon
timeouts, even though the connection to the AP is very
good.  Allow tuning the beacon-loss-count variable to
give the system longer to process beacons if the user
prefers.

Signed-off-by: Ben Greear <greearb@candelatech.com>
[add the number of beacons to the message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ben Greear 2013-03-19 14:19:56 -07:00 committed by Johannes Berg
parent 3a7bba649e
commit 59c1ec2b78
1 changed files with 7 additions and 3 deletions
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10
net/mac80211/mlme.c
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@ -56,7 +56,10 @@ MODULE_PARM_DESC(max_probe_tries,
* probe on beacon miss before declaring the connection lost
* default to what we want.
*/
#define IEEE80211_BEACON_LOSS_COUNT 7
static int beacon_loss_count = 7;
module_param(beacon_loss_count, int, 0644);
MODULE_PARM_DESC(beacon_loss_count,
"Number of beacon intervals before we decide beacon was lost.");
/*
* Time the connection can be idle before we probe
@ -1645,7 +1648,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
beacon_loss_count * bss_conf->beacon_int));
sdata->u.mgd.associated = cbss;
memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
@ -1977,7 +1980,8 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
if (beacon)
mlme_dbg_ratelimited(sdata,
"detected beacon loss from AP - probing\n");
"detected beacon loss from AP (missed %d beacons) - probing\n",
beacon_loss_count);
ieee80211_cqm_rssi_notify(&sdata->vif,
NL80211_CQM_RSSI_BEACON_LOSS_EVENT, GFP_KERNEL);