linux-toradex.git/net/mac80211/mesh_plink.c, branch v3.19.3

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

2014-09-08T15:14:56+00:00

mac80211: mesh_plink: use get_unaligned_le16 instead of memcpy

2014-08-26T09:15:34+00:00

Use get_unaligned_le16 to access llid/plid.

Signed-off-by: Bob Copeland 
Signed-off-by: Johannes Berg

mac80211: mesh_plink: handle confirm frames with new plid

2014-08-26T09:12:55+00:00

The 802.11 standard says when processing a plink confirm
frame:

"If the peerLinkID in the mesh peering instance has not been
set, the Local Link ID field of the Mesh Peering Confirm
request shall be copied into the peerLinkID in the mesh
peering instance."

We were only doing this when receiving an open peering frame,
but it could happen that the open frame gets lost and so we
should handle this case rather than rejecting the confirm and
failing the whole peering process.

Reported-by: Yu Niiro 
Signed-off-by: Bob Copeland 
Signed-off-by: Johannes Berg

mac80211: don't duplicate station QoS capability data

2014-08-15T12:38:08+00:00

We currently track the QoS capability twice: for all peer stations
in the WLAN_STA_WME flag, and for any clients associated to an AP
interface separately for drivers in the sta->sta.wme field.

Remove the WLAN_STA_WME flag and track the capability only in the
driver-visible field, getting rid of the limitation that the field
is only valid in AP mode.

Reviewed-by: Arik Nemtsov 
Signed-off-by: Johannes Berg

mac80211: remove ignore_plink_timer flag

2014-06-23T09:05:27+00:00

The mesh_plink code is doing some interesting things with the
ignore_plink_timer flag.  It seems the original intent was to
handle this race:

cpu 0                           cpu 1
-----                           -----
                                start timer handler for state X
acquire sta_lock
change state from X to Y
mod_timer() / del_timer()
release sta_lock
                                acquire sta_lock
                                execute state Y timer too soon

However, using the mod_timer()/del_timer() return values to
detect these cases is broken.  As a result, timers get ignored
unnecessarily, and stations can get stuck in the peering state
machine.

Instead, we can detect the case by looking at the timer expiration.
In the case of del_timer, just ignore the timers in the following
(LISTEN/ESTAB) states since they won't have timers anyway.

Signed-off-by: Bob Copeland 
Signed-off-by: Johannes Berg

mac80211: enable WME for peer mesh STA

2014-01-06T16:43:06+00:00

Enable the WME for peer mesh STA so that the driver,
such as wcn36xx, will pick this up and enabling it in HW.

Signed-off-by: Chun-Yeow Yeoh 
Signed-off-by: Johannes Berg

mac80211: use put_unaligned_le16 in mesh_plink_frame_tx

2013-11-25T19:51:53+00:00

Use put_unaligned_le16 in mesh_plink_frame_tx.

Signed-off-by: Chun-Yeow Yeoh 
Signed-off-by: Johannes Berg

mac80211: clean up mesh local link ID generation

2013-11-25T19:50:29+00:00

802.11-2012 13.3.1 implicitly limits the mesh local link
ID range to that of AID, since for mesh PS the local link
ID must be indicated in the TIM IE, which only holds
IEEE80211_MAX_AID bits.

Also the code was allowing a local link ID of 0, but this
is not correct since that TIM bit is used for indicating
buffered mcast frames.

Generate a random, unique, link ID from 1 - 2007, and drop
a modulo conversion for the local link ID, but keep it for
the peer link ID in case he chose something > MAX_AID.

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

mac80211: factor out plink event gathering

2013-11-25T19:50:26+00:00

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

mac80211: factor out peering FSM

2013-11-25T19:50:23+00:00

Signed-off-by: Thomas Pedersen 
[fix some indentation, squash llid assignment]
Signed-off-by: Johannes Berg