linux-stable.git/net/mac80211/tx.c, branch linux-3.3.y

mac80211: fix AP mode EAP tx for VLAN stations

2012-05-07T15:53:37+00:00

commit 66f2c99af3d6f2d0aa1120884cf1c60613ef61c0 upstream.

EAP frames for stations in an AP VLAN are sent on the main AP interface
to avoid race conditions wrt. moving stations.
For that to work properly, sta_info_get_bss must be used instead of
sta_info_get when sending EAP packets.
Previously this was only done for cooked monitor injected packets, so
this patch adds a check for tx->skb->protocol to the same place.

Signed-off-by: Felix Fietkau 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

mac80211: fix tx->skb NULL pointer dereference

2012-01-16T20:01:16+00:00

In function ieee80211_tx_h_encrypt the var info was
initialized from tx->skb, since the fucntion
is called after the function ieee80211_tx_h_fragment
tx->skb is not valid anymore.

Signed-off-by: Yoni Divinsky 
Signed-off-by: John W. Linville

mac80211: Use appropriate TID for sending BAR, ADDBA and DELBA frames

2011-12-15T19:46:35+00:00

Currently BAR, ADDBA and DELBA frames are always sent using AC_VO. If
the TID for which a BA session is established is assigned to a different
queue BAR, ADDBA and DELBA frames can "overtake" frames of the according
BA session.

Hence, always put BA session related frames into the same queue as the
BA sessions data frames.

Signed-off-by: Helmut Schaa 
Signed-off-by: John W. Linville

mac80211: reduce station management complexity

2011-12-15T19:46:35+00:00

Now that IBSS no longer needs to insert stations
from atomic context, we can get rid of all the
special cases for that, and even get rid of the
sta_lock (though it needs to stay as tim_lock.)

This makes the station management code much more
straight-forward.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: count authorized stations per BSS

2011-12-15T19:46:34+00:00

Currently, each AP interface will send multicast
traffic if any interface has a station entry even
if that station entry is allocated only. With the
new station state management we can easily fix it
by adding a counter that counts each authorized
station only and send multicast traffic only when
the correct interface has at least one authorized
station.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: refactor station state transitions

2011-12-15T19:46:34+00:00

Station entries can have various states, the most
important ones being auth, assoc and authorized.
This patch prepares us for telling the driver about
these states, we don't want to confuse drivers with
strange transitions, so with this we enforce that
they move in the right order between them (back and
forth); some transitions might happen before the
driver even knows about the station, but at least
runtime transitions will be ordered correctly.

As a consequence, IBSS and MESH stations will now
have the ASSOC flag set (so they can transition to
AUTHORIZED), and we can get rid of a special case
in TX processing.

When freeing a station, unwind the state so that
other parts of the code (or drivers later) can rely
on the transitions.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: fix retransmit

2011-12-06T21:07:07+00:00

This fixes another regression from my "pass all
fragments to driver at once" patches -- if the
packet is being retransmitted then we don't go
through all handlers, but we still need to move
it to the skbs list, otherwise we run into the
first warning in __ieee80211_tx() and leak the
skb.

Signed-off-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: don't initiate path discovery when forwarding frame with unknown DA

2011-11-28T19:44:07+00:00

We used to initiate a path discovery when receiving a frame for which
there is no forwarding information. To cut down on PREQ spam, just send
a (gated) PERR in response.

Also separate path discovery logic from nexthop querying. This patch
means we no longer queue frames when forwarding, so kill the PERR TX
stuff in discard_frame().

Signed-off-by: Thomas Pedersen 
Signed-off-by: John W. Linville

{nl,cfg,mac}80211: Allow Setting Multicast Rate in Mesh

2011-11-28T19:44:02+00:00

Signed-off-by: Chun-Yeow Yeoh 
Signed-off-by: Thomas Pedersen 
Signed-off-by: John W. Linville

mac80211: call skb_put() before copying the data (trivial)

2011-11-28T19:43:57+00:00

It doesn't have any actual effect here, but we should
skb_put() *before* copying the data.

Signed-off-by: Eliad Peller 
Signed-off-by: John W. Linville