1. 13 Feb, 2009 2 commits
    • Kalle Valo's avatar
      mac80211: use ps-poll when dynamic power save mode is disabled · 572e0012
      Kalle Valo authored
      When a directed tim bit is set, mac80211 currently disables power save
      ands sends a null frame to the AP. But if dynamic power save is
      disabled, mac80211 will not enable power save ever gain. Fix this by
      adding ps-poll functionality to mac80211. When a directed tim bit is
      set, mac80211 sends a ps-poll frame to the AP and checks for the more
      data bit in the returned data frames.
      
      Using ps-poll is slower than waking up with null frame, but it's saves more
      power in cases where the traffic is low. Userspace can control if either
      ps-poll or null wakeup method is used by enabling and disabling dynamic
      power save.
      Signed-off-by: default avatarKalle Valo <kalle.valo@nokia.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      572e0012
    • Kalle Valo's avatar
      mac80211: remove multicast check from check_tim() · 1fb3606b
      Kalle Valo authored
      Currently mac80211 checks for the multicast tim bit from beacons,
      disables power save and sends a null frame if the bit is set. This was
      added to support ath9k. But this is a bit controversial because the AP will
      send multicast frames immediately after the beacon and the time constraints
      are really high. Relying mac80211 to be fast enough here might not be
      reliable in all situations. And there's no need to send a null frame, AP
      will send the frames immediately after the dtim beacon no matter what.
      
      Also if dynamic power save is disabled (iwconfig wlan0 power timeout 0)
      currently mac80211 disables power save whenever the multicast bit is set
      but it's never enabled again after receiving the first multicast/broadcast
      frame.
      
      The current implementation is not usable on p54/stlc45xx and the
      easiest way to fix this is to remove the multicast tim bit check
      altogether. Handling multicast tim bit in host is rare, most of the
      designs do this in firmware/hardware, so it's better not to have it in
      mac80211. It's a lot better to do this in firmware/hardware, or if
      that's not possible it could be done in the driver.
      
      Also renamed the function to ieee80211_check_tim() to follow the style
      of the file.
      Signed-off-by: default avatarKalle Valo <kalle.valo@nokia.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      1fb3606b
  2. 11 Feb, 2009 1 commit
  3. 09 Feb, 2009 4 commits
  4. 29 Jan, 2009 21 commits
  5. 22 Jan, 2009 1 commit
  6. 19 Dec, 2008 5 commits
  7. 12 Dec, 2008 1 commit
  8. 05 Dec, 2008 2 commits
  9. 26 Nov, 2008 1 commit
  10. 25 Nov, 2008 1 commit
    • Luis R. Rodriguez's avatar
      cfg80211/mac80211: Add 802.11d support · 3f2355cb
      Luis R. Rodriguez authored
      This adds country IE parsing to mac80211 and enables its usage
      within the new regulatory infrastructure in cfg80211. We parse
      the country IEs only on management beacons for the BSSID you are
      associated to and disregard the IEs when the country and environment
      (indoor, outdoor, any) matches the already processed country IE.
      
      To avoid following misinformed or outdated APs we build and use
      a regulatory domain out of the intersection between what the AP
      provides us on the country IE and what CRDA is aware is allowed
      on the same country.
      
      A secondary device is allowed to follow only the same country IE
      as it make no sense for two devices on a system to be in two
      different countries.
      
      In the case the AP is using country IEs for an incorrect country
      the user may help compliance further by setting the regulatory
      domain before or after the IE is parsed and in that case another
      intersection will be performed.
      
      CONFIG_WIRELESS_OLD_REGULATORY is supported but requires CRDA
      present.
      Signed-off-by: default avatarLuis R. Rodriguez <lrodriguez@atheros.com>
      Acked-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      3f2355cb
  11. 21 Nov, 2008 1 commit