Commit 92778180 authored May 14, 2009 by Jouni Malinen Committed by John W. Linville May 20, 2009

mac80211: Cancel pending probereq poll on beacon RX



While the probe request poll is expected to work, it looks like it
does not always result in getting a response. The exact reason for
this is unclear, but anyway, if we do receive a Beacon frame from our
AP, there is no need to disconnect based on the probereq poll. This
seems to help keep the connection bit more stable in cases where
beacon loss is occurring semi-frequently.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 13bdcd90

net/mac80211/mlme.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -1824,6 +1824,16 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
		memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0)
		return;

		if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) {
		#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
		if (net_ratelimit()) {
		printk(KERN_DEBUG "%s: cancelling probereq poll due "
		"to a received beacon\n", sdata->dev->name);
		}
		#endif
		ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
		}

		ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
		ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
		len - baselen, &elems,

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