1. 08 Feb, 2011 26 commits
  2. 07 Feb, 2011 6 commits
  3. 06 Feb, 2011 2 commits
  4. 04 Feb, 2011 6 commits
    • Ben Greear's avatar
      mac80211: Optimize scans on current operating channel. · b23b025f
      Ben Greear authored
      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: default avatarBen Greear <greearb@candelatech.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      b23b025f
    • Felix Fietkau's avatar
      ath9k: add additional checks for the baseband hang detection · cb8d61de
      Felix Fietkau authored
      Since even with the latest changes the false positive issue of the baseband
      hang check is not fully solved yet, additional checks are needed.
      If the baseband hang occurs, the rx_clear signal will be stuck to high, so
      we can use the cycle counters to confirm it.
      With this patch, a hardware reset is only triggered if the baseband hang
      check returned true three times in a row, with a beacon interval between
      each check and if the busy time was also 99% or more during the check
      intervals.
      Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      cb8d61de
    • Felix Fietkau's avatar
      mac80211: do not send duplicate data frames to the cooked monitor interface · b1f93314
      Felix Fietkau authored
      I can't think of a valid use case for this aside from debugging (which can
      also be done with a real monitor interface), and dropping these frames saves
      some precious CPU cycles.
      Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      b1f93314
    • Jouni Malinen's avatar
      ath: Fix clearing of secondary key cache entry for TKIP · 8e546104
      Jouni Malinen authored
      All register writes to the key cache have to be done in pairs. However,
      the clearing of a separate MIC entry with hardware revisions that use
      combined MIC key layout did not do that with one of the registers. Add
      the matching register write to the following register to make the KEY4
      register write actually complete.
      
      This is mostly a fix for a theoretical issue since the incorrect entry
      that could potentially be left behind in the key cache would not match
      with received frames. Anyway, better make this code clean the entry
      correctly using paired register writes.
      Signed-off-by: default avatarJouni Malinen <jouni.malinen@atheros.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      8e546104
    • Rajkumar Manoharan's avatar
      mac80211: do not restart ps timer during scan or offchannel · 8c99f691
      Rajkumar Manoharan authored
      While leaving oper channel, STA informs sleep state to AP to
      stop sending data. Till sending ack for the nullfunc, AP
      continues to send the data to STA which restarts ps_timer that
      is causing unnecessary nullfunc exchange on timer expiry
      when the STA was already moved to offchannel. So don't restart ps_timer
      on data reception during scan. This issue was identified by
      the following warning.
      
      WARNING: at net/mac80211/tx.c:661 invoke_tx_handlers+0xf07/0x1330 [mac80211]
      wlan0: Dropped data frame as no usable bitrate found while scanning and
      associated. Target station: 00:03:7f:0b:a6:1b on 5 GHz band
      Call Trace:
        [<ffffffffa0413ba7>] invoke_tx_handlers+0xf07/0x1330 [mac80211]
        [<ffffffffa0414056>] ieee80211_tx+0x86/0x2c0 [mac80211]
        [<ffffffffa0414345>] ieee80211_xmit+0xb5/0x1d0 [mac80211]
        [<ffffffffa04037e0>] ieee80211_dynamic_ps_enable_work+0x0/0xb0 [mac80211]
        [<ffffffffa04158cf>] ieee80211_tx_skb+0x4f/0x60 [mac80211]
        [<ffffffffa04026e6>] ieee80211_send_nullfunc+0x46/0x60 [mac80211]
        [<ffffffffa0403885>] ieee80211_dynamic_ps_enable_work+0xa5/0xb0 [mac80211]
      Reviewed-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarRajkumar Manoharan <rmanoharan@atheros.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      8c99f691
    • Jussi Kivilinna's avatar
      24d24c62