Here's my proposal how to implement beacon filtering in mac80211. The
basic idea is simple, the driver enables filtering whenever mac80211
enables power save and the driver calls ieee80211_beacon_loss()
whenever hardware informs about beacon loss.
I have tested this with stlc45xx and based on simple tests this seems
to work. For reference I earlier sent stlc45xx patch to this list.
v2:
o rebase to 2.6.29-rc7-wl
o rename ieee80211_rx_trigger() to ieee80211_sta_rx_notify()
o move check for sta mode in ieee80211_sta_rx_notify() to rx.c
o move unicast check from rx.c to ieee80211_sta_rx_notify()
o add comment for setting last_beacon in ieee80211_rx_mgmt_assoc_resp()
o rename IEEE80211_HW_BEACON_FILTERING to IEEE80211_HW_BEACON_FILTER
o send probe request from ieee80211_beacon_loss_work()
o API documentation
o enable beacon filtering only when power save is enabled
o disable power save (and hence beacon filtering) while scanning to make
it possible to have reliable scan results even when beacon filtering
is enabled
TODO:
o test with different hardware (without beacon filtering) to
avoid regressions
---
Kalle Valo (4):
mac80211: add beacon filtering support
mac80211: disable power save when scanning
mac80211: track beacons separately from the rx path activity
mac80211: decrease execution of the associated timer
include/net/mac80211.h | 30 +++++++++--
net/mac80211/ieee80211_i.h | 5 ++
net/mac80211/iface.c | 3 +
net/mac80211/mlme.c | 124 +++++++++++++++++++++++++++++++++-----------
net/mac80211/rx.c | 9 +++
net/mac80211/scan.c | 54 ++++++++++++++++++-
6 files changed, 185 insertions(+), 40 deletions(-)
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