linux.git/net/mac80211/rx.c, branch v4.3

mac80211: use DECLARE_EWMA

2015-08-14T15:49:53+00:00

Instead of using the out-of-line average calculation, use the new
DECLARE_EWMA() macro to declare a signal EWMA, and use that.

This actually *reduces* the code size slightly (on x86-64) while
also reducing the station info size by 80 bytes.

Signed-off-by: Johannes Berg

mac80211: Only accept data frames in OCB mode

2015-08-14T15:49:49+00:00

Currently OCB mode accepts frames with bssid==broadcast and type!=beacon.
Some non-data frames are sent matching this, for example probe responses.
This results in unnecessary creation of STA entries.

Signed-off-by: Bertold Van den Bergh 
Signed-off-by: Johannes Berg

mac80211: TDLS: handle chan-switch in RTNL locked work

2015-07-17T13:40:15+00:00

Move TDLS channel-switch Rx handling into an RTNL locked work. This is
required to add proper regulatory checking to incoming channel-switch
requests.
Queue incoming requests in a dedicated skb queue and handle the request
in a device-specific work to avoid deadlocking on interface removal.

Signed-off-by: Arik Nemtsov 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: remove IEEE80211_RX_FRAGMENTED

2015-07-17T13:38:04+00:00

There's a long-standing TODO item to use this flag in the cooked
monitor RX, but clearly it was never needed and now this hasn't
been used by userspace for a long time, so no userspace changes
could require it now.

Remove the unused flag.

Signed-off-by: Johannes Berg

mac80211: remove key TX/RX counter

2015-07-17T13:38:01+00:00

This counter is inherently racy (since it can be incremented by RX
as well as by concurrent TX) and only available in debugfs. Instead
of fixing it to be per-CPU or similar, remove it for now. If needed
it should be added without races and with proper nl80211, perhaps
even addressing the threshold reporting TODO item that's been there
since the code was originally added.

Signed-off-by: Johannes Berg

mac80211: remove zero-length A-MPDU subframe reporting

2015-07-17T13:38:00+00:00

As there's no driver using this capability and reporting zero-length
A-MPDU subframes for radiotap monitoring, remove the capability to
free up two RX flags.

Signed-off-by: Johannes Berg

mac80211: don't store napi struct

2015-07-17T13:37:59+00:00

When introducing multiple RX queues, a single NAPI struct will not
be sufficient. Instead of trying to store multiple, simply change
the API to have the NAPI struct passed to the RX function. This of
course means that drivers using rx_irqsafe() cannot use NAPI, but
that seems a reasonable trade-off, particularly since only two of
all drivers are currently using it at all.

While at it, we can now remove the IEEE80211_RX_REORDER_TIMER flag
again since this code path cannot have a napi struct anyway.

Signed-off-by: Johannes Berg

mac80211: move ieee80211_get_bssid into RX file

2015-07-17T13:37:57+00:00

This function is only used in the RX code, so moving it into
that file gives the compiler better optimisation possibilities
and also allows us to remove the check for short frames (which
in the RX path cannot happen, but as a generic utility needed
to be checked.)

Signed-off-by: Johannes Berg

mac80211: remove short frame test and counter

2015-07-17T13:37:55+00:00

Short frames less than 16 octets are already blocked in the monitor
code by the should_drop_frame() function, and cannot get into the
regular RX path. Therefore, this check can never trigger and the
counter invariably stays zero. Remove the useless code.

Signed-off-by: Johannes Berg

mac80211: rename 'sta_inf' variable to more common 'sta'

2015-07-17T13:37:53+00:00

We typically use 'sta' for the station info struct, and if needed
'pubsta' for the public (driver-visible) portion thereof. Do this
in the ieee80211_sta_ps_transition() function.

Signed-off-by: Johannes Berg