linux-toradex.git/net/mac80211/mesh.h, branch v3.9.8

mac80211: clean up mesh code

2013-02-15T14:46:37+00:00

There's various code with strange indentation,
questionable loop and locking constructs, etc.

The bigger change is moving the "sdata" argument
to the first argument of all functions, like all
other mac80211 functions that have one.

Signed-off-by: Johannes Berg

mac80211: cache mesh beacon

2013-02-15T08:41:40+00:00

Previously, the entire mesh beacon would be generated each
time the beacon timer fired. Instead generate a beacon
head and tail (so the TIM can easily be inserted when mesh
power save is on) when starting a mesh or the MBSS
parameters change.

Also add a mutex for protecting beacon updates and
preventing leaks.

Signed-off-by: Thomas Pedersen 
Signed-off-by: Johannes Berg

mac80211: constify IE parsing

2013-02-15T08:41:39+00:00

Make all the parsed IE pointers const, and propagate
the change to all the users etc.

Signed-off-by: Johannes Berg

mac80211: consolidate MBSS change notification

2013-02-15T08:41:09+00:00

A few mesh utility functions will call
ieee80211_bss_info_change_notify(), and then the caller
might notify the driver of the same change again. Avoid
this redundancy by propagating the BSS changes and
generally calling bss_info_change_notify() once per
change.

Signed-off-by: Thomas Pedersen 
Signed-off-by: Johannes Berg

mac80211: fix mesh sta teardown

2013-02-11T17:44:54+00:00

The patch "mac80211: clean up mesh sta allocation warning"
moved some mesh initialization into a path which is only
called when the kernel handles peering. This causes a hang
when mac80211 tries to clean up a userspace-allocated
station entry and delete a timer which has never been
initialized.

To avoid this, only do any mesh sta peering teardown if
the kernel is actually handling it.

The same is true when quiescing before suspend.

Signed-off-by: Thomas Pedersen 
Signed-off-by: Johannes Berg

mac80211: mesh power save basics

2013-02-04T17:57:47+00:00

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: Marco Porsch 
Signed-off-by: Ivan Bezyazychnyy 
Signed-off-by: Mike Krinkin 
Signed-off-by: Max Filippov 
Signed-off-by: Johannes Berg

{cfg,nl,mac}80211: set beacon interval and DTIM period on mesh join

2013-01-16T21:44:04+00:00

Move the default mesh beacon interval and DTIM period to cfg80211
and make them accessible to nl80211. This enables setting both
values when joining an MBSS.

Previously the DTIM parameter was not set by mac80211 so the
driver's default value was used.

Signed-off-by: Marco Porsch 
Signed-off-by: Johannes Berg

mac80211: update mesh peer link counter during userspace peering

2013-01-16T21:40:56+00:00

The established peer link count is indicated in mesh beacons and
used for other internal tasks. Previously it was not updated when
authenticated peering is performed in userspace.

Signed-off-by: Marco Porsch 
Acked-by: Thomas Pedersen 
Signed-off-by: Johannes Berg

mac80211: RMC buckets are just list heads

2013-01-03T11:59:59+00:00

The array of rmc_entrys is redundant since only the
list_head is used. Make this an array of list_heads
instead and save ~6k per vif at runtime :D

Signed-off-by: Thomas Pedersen 
Signed-off-by: Johannes Berg

mac80211: move Mesh Capability field definition to ieee80211.h

2012-11-26T10:35:21+00:00

Signed-off-by: Marco Porsch 
[prefix with IEEE80211_]
Signed-off-by: Johannes Berg