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  1. 08 Feb, 2013 1 commit
  3. 04 Feb, 2013 16 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
    • Johannes Berg's avatar
      cfg80211: fix BSS IE allocation comment · 50521aa8
      Johannes Berg authored 
      The comment about allocating the IEs together with
the BSS struct is no longer true, remove it. Also
fix a typo in the same area.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      50521aa8
    • Johannes Berg's avatar
      mac80211: remove unused SSID from BSS · 3146a7da
      Johannes Berg authored 
      The ssid/ssid_len fields in the private BSS
struct are unused, contrary to the comment
we do look up the SSID in the few cases we
need it.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      3146a7da
    • Johannes Berg's avatar
      cfg80211: remove unused cfg80211_get_mesh · 37e08381
      Johannes Berg authored 
      As Thomas pointed out, cfg80211_get_mesh() is
unused and can be removed.

Cc: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      37e08381
    • Johannes Berg's avatar
      cfg80211: simplify mesh BSS comparison · 3af6341c
      Johannes Berg authored 
      Instead of first checking if a BSS is an MBSS
and then doing the comparisons, inline it all
into the BSS comparison function. This avoids
doing the IE searches twice and is also a lot
less code.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      3af6341c
    • Johannes Berg's avatar
      cfg80211: fix BSS list hidden SSID lookup · 4593c4cb
      Johannes Berg authored 
      When trying to find a hidden SSID, the lookup function
is done wrong; the code is trying to combine the two
lookups into one, and as a consequence doesn't always
find the entry at all. To understand this, consider a
case where multiple BSS entries with the same channel
and BSSID exist but have different SSID length. Then
comparing against the probe response SSID length is
bound to cause problems since the hidden one might be
either zeroed out or zero-length.

To fix this we need to do two lookups for the two ways
to hide SSIDs.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      4593c4cb
    • Johannes Berg's avatar
      cfg80211: refactor hidden SSID finding · 5622f5bb
      Johannes Berg authored 
      Instead of duplicating the rbtree functions, pass
an argument to the compare function. This removes
the code duplication for the two searches.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      5622f5bb
    • Vladimir Kondratiev's avatar
      cfg80211: expand per-station byte counters to 64bit · 42745e03
      Vladimir Kondratiev authored 
      In per-station statistics, present 32bit counters are too small
for practical purposes - with gigabit speeds, it get overlapped
every few seconds.

Expand counters in the struct station_info to be 64-bit.
Driver can still fill only 32-bit and indicate in @filled
only bits like STATION_INFO_[TR]X_BYTES; in case driver provides
full 64-bit counter, it should also set in @filled
bit STATION_INFO_[TR]RX_BYTES64

Netlink sends both 32-bit and 64-bit counters, if present, to not
break userspace.
Signed-off-by: default avatarVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
[change to also have 32-bit counters if driver advertises 64-bit]
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      42745e03
    • Johannes Berg's avatar
      mac80211: always allow calling ieee80211_connection_loss() · 682bd38b
      Johannes Berg authored 
      With multi-channel, there's a corner case where a driver
doesn't receive a beacon soon enough to be able to sync
its timers with the AP. In this case, the only recovery
(after trying again) is to disconnect from the AP. Allow
calling ieee80211_connection_loss() for such cases. To
make that possible, modify the work function to not rely
on the IEEE80211_HW_CONNECTION_MONITOR flag but use new
state kept in the interface instead.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      682bd38b
    • Johannes Berg's avatar
      mac80211: send deauth when connection is lost · eef9e54c
      Johannes Berg authored 
      If the driver determines the connection is lost,
send a deauth frame to the AP anyway just in case
it still considers the connection alive. The frame
might not go through, but at least we've tried.
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
      eef9e54c
  5. 01 Feb, 2013 23 commits
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