linux-stable.git/net/wireless/util.c, branch v3.8

cfg80211: fix BSS struct IE access races

2012-11-30T12:42:20+00:00

When a BSS struct is updated, the IEs are currently
overwritten or freed. This can lead to races if some
other CPU is accessing the BSS struct and using the
IEs concurrently.

Fix this by always allocating the IEs in a new struct
that holds the data and length and protecting access
to this new struct with RCU.

Signed-off-by: Johannes Berg

nl80211/cfg80211: add VHT MCS support

2012-11-26T11:42:59+00:00

Add support for reporting and calculating VHT MCSes.

Note that I'm not completely sure that the bitrate
calculations are correct, nor that they can't be
simplified.

Signed-off-by: Johannes Berg

cfg80211: change function signature of cfg80211_get_p2p_attr()

2012-11-26T10:28:55+00:00

The function cfg80211_get_p2p_attr() can fail and returns
a negative error code. However, the return type is unsigned
int. The largest positive number is determined by desired_len
variable in the function, which is u16. So changing the return
type to int to allow easy error checking. Also change the type
for the attribute to enum for improved type checking.

Signed-off-by: Arend van Spriel 
[fix indentation, don't use u8 attr variable]
Signed-off-by: Johannes Berg

wireless: add utility function to get P2P attribute

2012-11-06T12:24:52+00:00

Parsing the P2P attributes can be tricky as their
contents can be split across multiple (vendor) IEs.
Thus, it's not possible to parse them like IEs (by
returning a pointer to the data.) Instead, provide
a function that copies the attribute data into a
caller-provided buffer and returns the size needed
(useful in case the buffer was too small.)

Signed-off-by: Johannes Berg

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

2012-10-29T20:05:51+00:00

Conflicts:
	drivers/net/wireless/mwifiex/cfg80211.c

mac80211: verify that skb data is present

2012-10-26T20:52:42+00:00

A number of places in the mesh code don't check that
the frame data is present and in the skb header when
trying to access. Add those checks and the necessary
pskb_may_pull() calls. This prevents accessing data
that doesn't actually exist.

To do this, export ieee80211_get_mesh_hdrlen() to be
able to use it in mac80211.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg

wireless: drop invalid mesh address extension frames

2012-10-26T20:52:41+00:00

The mesh header can have address extension by a 4th
or a 5th and 6th address, but never both. Drop such
frames in 802.11 -> 802.3 conversion along with any
frames that have the wrong extension.

Cc: stable@vger.kernel.org
Reviewed-by: Javier Cardona 
Signed-off-by: Johannes Berg

cfg80211: add wrappers for registered_device_ops

2012-10-18T08:53:37+00:00

This will allow adding central tracing like in mac80211.

Signed-off-by: Hila Gonen 
Reviewed-by: Emmanuel Grumbach 
Reviewed-by: Johannes Berg 
Signed-off-by: Johannes Berg

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

2012-08-24T16:25:30+00:00

cfg80211: add P2P Device abstraction

2012-08-20T11:58:21+00:00

In order to support using a different MAC address
for the P2P Device address we must first have a
P2P Device abstraction that can be assigned a MAC
address.

This abstraction will also be useful to support
offloading P2P operations to the device, e.g.
periodic listen for discoverability.

Currently, the driver is responsible for assigning
a MAC address to the P2P Device, but this could be
changed by allowing a MAC address to be given to
the NEW_INTERFACE command.

As it has no associated netdev, a P2P Device can
only be identified by its wdev identifier but the
previous patches allowed using the wdev identifier
in various APIs, e.g. remain-on-channel.

Signed-off-by: Johannes Berg