mac80211: use nullfunc instead of probe request for connection monitoring

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nullfunc frames are better for connection monitoring, because probe requests
are answered even if the AP has already dropped the connection, whereas
nullfunc frames from an unassociated station will trigger a disassoc/deauth
frame from the AP (WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA), which allows
the station to reconnect immediately instead of waiting until it attempts to
transmit the next unicast frame.

This only works on hardware with reliable tx ACK reporting, any other hardware
needs to fall back to the probe request method.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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This commit is contained in:

Felix Fietkau 2010-11-23 03:10:31 +01:00 • committed by John W. Linville

parent dd5b4cc71c

commit 4e5ff37692

3 changed files with 72 additions and 26 deletions

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2

net/mac80211/ieee80211_i.h

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92

net/mac80211/mlme.c

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4

net/mac80211/status.c

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