diff options
| author | Ben Greear <greearb@candelatech.com> | 2011-02-04 11:54:17 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-04 16:30:32 -0500 |
| commit | b23b025fe246f3acc2988eb6d400df34c27cb8ae (patch) | |
| tree | e1c8cd163dc4dc7c603652a9e101f8381cf66fdc /net/mac80211/rx.c | |
| parent | cb8d61de2d7f074654057b2b924da1efbf625ad4 (diff) | |
| download | blackbird-op-linux-b23b025fe246f3acc2988eb6d400df34c27cb8ae.tar.gz blackbird-op-linux-b23b025fe246f3acc2988eb6d400df34c27cb8ae.zip | |
mac80211: Optimize scans on current operating channel.
This should decrease un-necessary flushes, on/off channel work,
and channel changes in cases where the only scanned channel is
the current operating channel.
* Removes SCAN_OFF_CHANNEL flag, uses SDATA_STATE_OFFCHANNEL
and is-scanning flags instead.
* Add helper method to determine if we are currently configured
for the operating channel.
* Do no blindly go off/on channel in work.c Instead, only call
appropriate on/off code when we really need to change channels.
Always enable offchannel-ps mode when starting work,
and disable it when we are done.
* Consolidate ieee80211_offchannel_stop_station and
ieee80211_offchannel_stop_beaconing, call it
ieee80211_offchannel_stop_vifs instead.
* Accept non-beacon frames when scanning on operating channel.
* Scan state machine optimized to minimize on/off channel
transitions. Also, when going on-channel, go ahead and
re-enable beaconing. We're going to be there for 200ms,
so seems like some useful beaconing could happen.
Always enable offchannel-ps mode when starting software
scan, and disable it when we are done.
* Grab local->mtx earlier in __ieee80211_scan_completed_finish
so that we are protected when calling hw_config(), etc.
* Pass probe-responses up the stack if scanning on local
channel, so that mlme can take a look.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 753ffc41c1aa..b5f59ed24000 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -409,16 +409,10 @@ ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx) if (likely(!(status->rx_flags & IEEE80211_RX_IN_SCAN))) return RX_CONTINUE; - if (test_bit(SCAN_HW_SCANNING, &local->scanning)) + if (test_bit(SCAN_HW_SCANNING, &local->scanning) || + test_bit(SCAN_SW_SCANNING, &local->scanning)) return ieee80211_scan_rx(rx->sdata, skb); - if (test_bit(SCAN_SW_SCANNING, &local->scanning)) { - /* drop all the other packets during a software scan anyway */ - if (ieee80211_scan_rx(rx->sdata, skb) != RX_QUEUED) - dev_kfree_skb(skb); - return RX_QUEUED; - } - /* scanning finished during invoking of handlers */ I802_DEBUG_INC(local->rx_handlers_drop_passive_scan); return RX_DROP_UNUSABLE; @@ -2793,7 +2787,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, local->dot11ReceivedFragmentCount++; if (unlikely(test_bit(SCAN_HW_SCANNING, &local->scanning) || - test_bit(SCAN_OFF_CHANNEL, &local->scanning))) + test_bit(SCAN_SW_SCANNING, &local->scanning))) status->rx_flags |= IEEE80211_RX_IN_SCAN; if (ieee80211_is_mgmt(fc)) |
