Eric Lee / smarc-fsl-linux-kernel

05 Jan, 2012

2 commits

  • 67f61261b   mac80211: remove dead code ... Browse Code »

    ieee80211_offchannel_enable_all_ps function is no longer used
    and looks like its logic is extensively handled in
    ieee80211_offchannel_stop_vifs

    Signed-off-by: Mohammed Shafi Shajakhan
    Signed-off-by: John W. Linville

    Mohammed Shafi Shajakhan
     
  • f6e8cb72a   mac80211: always clear SDATA_STATE_OFFCHANNEL flag ... Browse Code »

    If the vif is stopped while it is offchannel (e.g. right
    after p2p negotiation) the SDATA_STATE_OFFCHANNEL flag
    is never get cleared, resulting in various bad effects
    (e.g. GO can't start beaconing).

    Fix it by clearing the SDATA_STATE_OFFCHANNEL flag
    even if the vif is stopped.

    Signed-off-by: Eliad Peller
    Signed-off-by: John W. Linville

    Eliad Peller
     

01 Dec, 2011

1 commit

  • e76aadc57   mac80211: revert on-channel work optimisations ... Browse Code »

    The on-channel work optimisations have caused a
    number of issues, and the code is unfortunately
    very complex and almost impossible to follow.
    Instead of attempting to put in more workarounds
    let's just remove those optimisations, we can
    work on them again later, after we change the
    whole auth/assoc design.

    This should fix rate_control_send_low() warnings,
    see RH bug 731365.

    Cc: stable@vger.kernel.org
    Signed-off-by: Johannes Berg
    Signed-off-by: John W. Linville

    Johannes Berg
     

23 Nov, 2011

1 commit

18 Nov, 2011

1 commit

  • fcac4fb00   mac80211: call ieee80211_recalc_idle() after sending packets ... Browse Code »

    Some drivers (e.g. ath9k) assume that it's safe to go into low-power mode
    immediately after the idle state changes. To support that, mac80211 even
    calls drv_flush() before that happens.
    In some instances, mac80211 sent a packet right after recalculating the
    idle state, this patch fixes that.

    Signed-off-by: Felix Fietkau
    Signed-off-by: John W. Linville

    Felix Fietkau
     

01 Nov, 2011

1 commit

05 Feb, 2011

1 commit

  • b23b025fe   mac80211: Optimize scans on current operating channel. ... Browse Code »

    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
    Signed-off-by: John W. Linville

    Ben Greear
     

06 Jan, 2011

2 commits

17 Sep, 2010

2 commits

  • 3bc3c0d74   mac80211: disable beacon monitor while going offchannel ... Browse Code »

    The beacon monitor should be disabled when going off channel
    to prevent spurious warnings and triggering connection
    deterioration work such as sending probe requests. Re-enable
    the beacon monitor once we come back to the home channel.

    This patch has fixes for stable kernels [2.6.34+].

    Cc: stable@kernel.org
    Cc: Paul Stewart
    Cc: Amod Bodas
    Signed-off-by: Luis R. Rodriguez
    Signed-off-by: John W. Linville

    Luis R. Rodriguez
     
  • 4730d5977   mac80211: reset connection idle when going offchannel ... Browse Code »

    When we go offchannel mac80211 currently leaves alive the
    connection idle monitor. This should be instead postponed
    until we come back to our home channel, otherwise by the
    time we get back to the home channel we could be triggering
    unecesary probe requests. For APs that do not respond to
    unicast probe requests (Nexus One is a simple example) this
    means we essentially get disconnected after the probes
    fails.

    This patch has stable fixes for kernels [2.6.35+]

    Cc: stable@kernel.org
    Cc: Paul Stewart
    Cc: Amod Bodas
    Signed-off-by: Luis R. Rodriguez
    Signed-off-by: John W. Linville

    Luis R. Rodriguez
     

28 Aug, 2010

1 commit

  • 5b714c6a3   mac80211: fix offchannel queue stop ... Browse Code »

    Somebody noticed this problem, and I outlined
    to them how to fix it, but haven't heard back
    from them. So while I was adding the state
    field I figured I could use it to fix it.

    The problem, as I understand it, is that when
    we go offchannel while the driver has a queue
    stopped, the driver will likely start draining
    the queue and then enable it while offchannel.
    This in turn will enable the interface queue,
    and that leads to transmitting data frames on
    the wrong channel.

    Fix this by keeping track of offchannel status
    per interface, and not enabling the interface
    queues on interfaces that are offchannel when
    the driver enables a queue.

    Signed-off-by: Johannes Berg
    Signed-off-by: John W. Linville

    Johannes Berg
     

16 Jan, 2010

1 commit

  • 93895757d   mac80211: Fixed netif_tx_wake_all_queues in IBSS mode ... Browse Code »

    When ieee80211_offchannel_return is called, it needs to re-enabled TX
    queues that have been stopped in ieee80211_offchannel_stop_beaconing or
    ieee80211_offchannel_stop_station. It happens if we are doing a scan with an
    IBSS interface. In this case, the interface stopped transmitting.

    Signed-off-by: Benoit Papillault
    Signed-off-by: John W. Linville

    Benoit Papillault
     

07 Jan, 2010

1 commit

29 Dec, 2009

2 commits