1. 15 Feb, 2013 3 commits
  2. 11 Feb, 2013 1 commit
    • Seth Forshee's avatar
      mac80211: Fix tx queue handling during scans · 6c17b77b
      Seth Forshee authored
      
      
      Scans currently work by stopping the netdev tx queues but leaving the
      mac80211 queues active. This stops the flow of incoming packets while
      still allowing mac80211 to transmit nullfunc and probe request frames to
      facilitate scanning. However, the driver may try to wake the mac80211
      queues while in this state, which will also wake the netdev queues.
      
      To prevent this, add a new queue stop reason,
      IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, to be used when stopping the tx
      queues for off-channel operation. This prevents the netdev queues from
      waking when a driver wakes the mac80211 queues.
      
      This also stops all frames from being transmitted, even those meant to
      be sent off-channel. Add a new tx control flag,
      IEEE80211_TX_CTL_OFFCHAN_TX_OK, which allows frames to be transmitted
      when the queues are stopped only for the off-channel stop reason. Update
      all locations transmitting off-channel frames to use this flag.
      Signed-off-by: default avatarSeth Forshee <seth.forshee@canonical.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      6c17b77b
  3. 04 Feb, 2013 2 commits
    • Marco Porsch's avatar
      mac80211: mesh power save basics · 3f52b7e3
      Marco Porsch authored
      
      
      Add routines to
      - maintain a PS mode for each peer and a non-peer PS mode
      - indicate own PS mode in transmitted frames
      - track neighbor STAs power modes
      - buffer frames when neighbors are in PS mode
      - add TIM and Awake Window IE to beacons
      - release frames in Mesh Peer Service Periods
      
      Add local_pm to sta_info to represent the link-specific power
      mode at this station towards the remote station. When a peer
      link is established, use the default power mode stored in mesh
      config. Update the PS status if the peering status of a neighbor
      changes.
      Maintain a mesh power mode for non-peer mesh STAs. Set the
      non-peer power mode to active mode during peering. Authenticated
      mesh peering is currently not working when either node is
      configured to be in power save mode.
      
      Indicate the current power mode in transmitted frames. Use QoS
      Nulls to indicate mesh power mode transitions.
      For performance reasons, calls to the function setting the frame
      flags are placed in HWMP routing routines, as there the STA
      pointer is already available.
      
      Add peer_pm to sta_info to represent the peer's link-specific
      power mode towards the local station. Add nonpeer_pm to
      represent the peer's power mode towards all non-peer stations.
      Track power modes based on received frames.
      
      Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS
      neighbor counter and group-addressed frame buffer).
      
      Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame
      buffering routines in the tx path. Update num_sta_ps to buffer
      and release group-addressed frames after DTIM beacons.
      
      Announce the awake window duration in beacons if in light or
      deep sleep mode towards any peer or non-peer. Create a TIM IE
      similarly to AP mode and add it to mesh beacons. Parse received
      Awake Window IEs and check TIM IEs for buffered frames.
      
      Release frames towards peers in mesh Peer Service Periods. Use
      the corresponding trigger frames and monitor the MPSP status.
      Append a QoS Null as trigger frame if neccessary to properly end
      the MPSP. Currently, in HT channels MPSPs behave imperfectly and
      show large delay spikes and frame losses.
      Signed-off-by: default avatarMarco Porsch <marco@cozybit.com>
      Signed-off-by: default avatarIvan Bezyazychnyy <ivan.bezyazychnyy@gmail.com>
      Signed-off-by: default avatarMike Krinkin <krinkin.m.u@gmail.com>
      Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      3f52b7e3
    • Johannes Berg's avatar
      mac80211: allow transmitting deauth with tainted key · e54faf29
      Johannes Berg authored
      
      
      When we had a connection for WoWLAN and after resume it
      needed to be disconnected, the previous commit enabled
      sending a deauth frame to the AP. This frame would not
      go through on MFP-enabled networks as the key for it is
      marked tainted before the frame is transmitted.
      
      Allow a tainted key to be used for deauth frames. Worst
      case, we'll use a wrong key because the PTK was rekeyed
      while suspended, but more likely the PTK is still fine
      and the taint flag really only applies to the GTK(s).
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      e54faf29
  4. 25 Jan, 2013 1 commit
    • Arnd Bergmann's avatar
      mac80211: avoid a build warning · fe80123d
      Arnd Bergmann authored
      
      
      gcc cannot prove that the value of sdata->vif.type does not
      change between the switch() statement and the second
      comparison to NL80211_IFTYPE_AP, causing a harmless
      warning.
      Slightly reordering the code makes the warning go away
      with no functional change.
      
      Without this patch, building ARM at91sam9g45_defconfig with
      gcc-4.6 results in:
      
      net/mac80211/tx.c: In function 'ieee80211_subif_start_xmit':
      net/mac80211/tx.c:1797:22: warning: 'chanctx_conf' may be used uninitialized in this function [-Wuninitialized]
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Cc: Johannes Berg <johannes@sipsolutions.net>
      Cc: "John W. Linville" <linville@tuxdriver.com>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: linux-wireless@vger.kernel.org
      Cc: netdev@vger.kernel.org
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      fe80123d
  5. 16 Jan, 2013 2 commits
  6. 30 Nov, 2012 1 commit
  7. 26 Nov, 2012 1 commit
    • Johannes Berg's avatar
      mac80211: convert to channel definition struct · 4bf88530
      Johannes Berg authored
      
      
      Convert mac80211 (and where necessary, some drivers a
      little bit) to the new channel definition struct.
      
      This will allow extending mac80211 for VHT, which is
      currently restricted to channel contexts since there
      are no drivers using that which makes it easier. As
      I also don't care about VHT for drivers not using the
      channel context API, I won't convert the previous API
      to VHT support.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      4bf88530
  8. 10 Nov, 2012 1 commit
  9. 07 Nov, 2012 1 commit
  10. 19 Oct, 2012 1 commit
    • Marco Porsch's avatar
      mac80211: make client powersave independent of interface type · d012a605
      Marco Porsch authored
      
      
      This patch prepares mac80211 for a later implementation of mesh or
      ad-hoc powersave clients.
      The structures related to powersave (buffer, TIM map, counters) are
      moved from the AP-specific interface structure to a generic structure
      that can be embedded into any interface type.
      The functions related to powersave are prepared to allow easy
      extension with different interface types. For example with:
      
      + } else if (sta->sdata->vif.type == NL80211_IFTYPE_MESH_POINT) {
      +         ps = &sdata->u.mesh.ps;
      
      Some references to the AP's beacon structure are removed where they
      were obviously not used.
      
      The patch compiles without warning and has been briefly tested as AP
      interface with one client in PS mode.
      Signed-off-by: default avatarMarco Porsch <marco.porsch@etit.tu-chemnitz.de>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      d012a605
  11. 18 Oct, 2012 1 commit
  12. 17 Oct, 2012 1 commit
    • Johannes Berg's avatar
      mac80211: use channel contexts · 55de908a
      Johannes Berg authored
      
      
      Instead of operating on a single channel only,
      use the new channel context infrastructure in
      all mac80211 code.
      
      This enables drivers that want to use the new
      channel context infrastructure to use multiple
      channels, while nothing should change for all
      the other drivers that don't support it.
      
      Right now this disables both TX power settings
      and spatial multiplexing powersave. Both need
      to be re-enabled on a channel context basis.
      
      Additionally, when channel contexts are used
      drop the connection when channel switch is
      received rather than trying to handle it. This
      will have to be improved later.
      
      [With fixes from Eliad and Emmanuel incorporated]
      Signed-off-by: default avatarEliad Peller <eliad@wizery.com>
      Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      55de908a
  13. 08 Oct, 2012 1 commit
  14. 10 Sep, 2012 1 commit
    • Johannes Berg's avatar
      mac80211: add key flag for management keys · e548c49e
      Johannes Berg authored
      
      
      Mark keys that might be used to receive management
      frames so drivers can fall back on software crypto
      for them if they don't support hardware offload.
      As the new flag is only set correctly for RX keys
      and the existing IEEE80211_KEY_FLAG_SW_MGMT flag
      can only affect TX, also rename the latter to
      IEEE80211_KEY_FLAG_SW_MGMT_TX.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      e548c49e
  15. 22 Aug, 2012 1 commit
  16. 20 Aug, 2012 3 commits
  17. 31 Jul, 2012 4 commits
  18. 12 Jul, 2012 2 commits
  19. 11 Jul, 2012 1 commit
  20. 10 Jul, 2012 1 commit
  21. 03 Jul, 2012 1 commit
  22. 02 Jul, 2012 2 commits
  23. 28 Jun, 2012 1 commit
  24. 26 Jun, 2012 1 commit
  25. 24 Jun, 2012 1 commit
    • Johannes Berg's avatar
      mac80211: clean up debugging · bdcbd8e0
      Johannes Berg authored
      
      
      There are a few things that make the logging and
      debugging in mac80211 less useful than it should
      be right now:
       * a lot of messages should be pr_info, not pr_debug
       * wholesale use of pr_debug makes it require *both*
         Kconfig and dynamic configuration
       * there are still a lot of ifdefs
       * the style is very inconsistent, sometimes the
         sdata->name is printed in front
      
      Clean up everything, introducing new macros and
      separating out the station MLME debugging into
      a new Kconfig symbol.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      bdcbd8e0
  26. 05 Jun, 2012 1 commit
  27. 04 Jun, 2012 1 commit
    • Chun-Yeow Yeoh's avatar
      mac80211: Fix Unreachable Mesh Station Problem when joining to another MBSS · b8bacc18
      Chun-Yeow Yeoh authored
      
      
      Mesh station that joins an MBSS is reachable using mesh portal with 6
      address frame by mesh stations from another MBSS if these two different
      MBSSes are bridged. However, if the mesh station later moves into the
      same MBSS of those mesh stations, it is unreachable by mesh stations
      in the MBSS due to the mpp_paths table is not deleted. A quick fix
      is to perform mesh_path_lookup, if it is available for the target
      destination, mpp_path_lookup is not performed. When the mesh station
      moves back to its original MBSS, the mesh_paths will be deleted once
      expired. So, it will be reachable using mpp_path_lookup again.
      Signed-off-by: default avatarChun-Yeow Yeoh <yeohchunyeow@gmail.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      b8bacc18
  28. 29 May, 2012 1 commit
  29. 15 May, 2012 1 commit