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mac80211: make beacon-loss-count configurable
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>
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@ -56,7 +56,10 @@ MODULE_PARM_DESC(max_probe_tries,
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* probe on beacon miss before declaring the connection lost
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* default to what we want.
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*/
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#define IEEE80211_BEACON_LOSS_COUNT 7
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static int beacon_loss_count = 7;
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module_param(beacon_loss_count, int, 0644);
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MODULE_PARM_DESC(beacon_loss_count,
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"Number of beacon intervals before we decide beacon was lost.");
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/*
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* Time the connection can be idle before we probe
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@ -1645,7 +1648,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
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bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
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sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
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IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
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beacon_loss_count * bss_conf->beacon_int));
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sdata->u.mgd.associated = cbss;
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memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
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@ -1977,7 +1980,8 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
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if (beacon)
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mlme_dbg_ratelimited(sdata,
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"detected beacon loss from AP - probing\n");
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"detected beacon loss from AP (missed %d beacons) - probing\n",
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beacon_loss_count);
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ieee80211_cqm_rssi_notify(&sdata->vif,
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NL80211_CQM_RSSI_BEACON_LOSS_EVENT, GFP_KERNEL);
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