1. 08 Feb, 2013 33 commits
  2. 04 Feb, 2013 7 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
      cfg80211: wrap BSS kref · 0532d4f1
      Johannes Berg authored
      
      
      Add inline wrappers for the BSS struct krefs
      to be able to extend them easily later.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      0532d4f1
    • Johannes Berg's avatar
      cfg80211: remove a local variable · 9537f227
      Johannes Berg authored
      
      
      This local variable is only used once, so remove it.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      9537f227
    • Johannes Berg's avatar
      cfg80211: use lockdep to assert lock is held · 4b1af479
      Johannes Berg authored
      
      
      Instead of annotating with a comment, add a lockdep
      annotation which also serves as documentation.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      4b1af479
    • Johannes Berg's avatar
      mac80211: send deauth if connection was lost during suspend · 6b684db1
      Johannes Berg authored
      
      
      If the driver determined the connection was lost or that
      it couldn't securely maintain the connection when coming
      out of WoWLAN, send a deauth frame to the AP to also let
      it know.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      6b684db1
    • 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
    • Johannes Berg's avatar
      cfg80211: move locking into cfg80211_bss_age · 2ca813ad
      Johannes Berg authored
      
      
      There's no reason for it to require external
      locking, move it into the function.
      Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      2ca813ad