linux-stable.git/net/mac80211/debugfs_sta.c, branch v5.4.73

mac80211: drop data frames without key on encrypted links

2020-04-01T09:02:01+00:00

commit a0761a301746ec2d92d7fcb82af69c0a6a4339aa upstream.

If we know that we have an encrypted link (based on having had
a key configured for TX in the past) then drop all data frames
in the key selection handler if there's no key anymore.

This fixes an issue with mac80211 internal TXQs - there we can
buffer frames for an encrypted link, but then if the key is no
longer there when they're dequeued, the frames are sent without
encryption. This happens if a station is disconnected while the
frames are still on the TXQ.

Detecting that a link should be encrypted based on a first key
having been configured for TX is fine as there are no use cases
for a connection going from with encryption to no encryption.
With extended key IDs, however, there is a case of having a key
configured for only decryption, so we can't just trigger this
behaviour on a key being configured.

Cc: stable@vger.kernel.org
Reported-by: Jouni Malinen 
Signed-off-by: Johannes Berg 
Signed-off-by: Luca Coelho 
Link: https://lore.kernel.org/r/iwlwifi.20200326150855.6865c7f28a14.I9fb1d911b064262d33e33dfba730cdeef83926ca@changeid
Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2019-06-22T12:59:24+00:00

Minor SPDX change conflict.

Signed-off-by: David S. Miller

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

mac80211: no need to check return value of debugfs_create functions

2019-06-14T14:08:28+00:00

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Johannes Berg 
Cc: "David S. Miller" 
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Johannes Berg

mac80211: update HE IEs to D3.3

2019-02-22T12:46:55+00:00

Update element names and new fields according to D3.3 of
the HE spec.

Signed-off-by: Liad Kaufman 
Signed-off-by: Luca Coelho 
Signed-off-by: Johannes Berg

mac80211: Add airtime accounting and scheduling to TXQs

2019-01-19T08:31:43+00:00

This adds airtime accounting and scheduling to the mac80211 TXQ
scheduler. A new callback, ieee80211_sta_register_airtime(), is added
that drivers can call to report airtime usage for stations.

When airtime information is present, mac80211 will schedule TXQs
(through ieee80211_next_txq()) in a way that enforces airtime fairness
between active stations. This scheduling works the same way as the ath9k
in-driver airtime fairness scheduling. If no airtime usage is reported
by the driver, the scheduler will default to round-robin scheduling.

For drivers that don't control TXQ scheduling in software, a new API
function, ieee80211_txq_may_transmit(), is added which the driver can use
to check if the TXQ is eligible for transmission, or should be throttled to
enforce fairness. Calls to this function must also be enclosed in
ieee80211_txq_schedule_{start,end}() calls to ensure proper locking.

The API ieee80211_txq_may_transmit() also ensures that TXQ list will be
aligned aginst driver's own round-robin scheduler list. i.e it rotates
the TXQ list till it makes the requested node becomes the first entry
in TXQ list. Thus both the TXQ list and driver's list are in sync.

Co-developed-by: Rajkumar Manoharan 
Signed-off-by: Louie Lu 
[added debugfs write op to reset airtime counter]
Signed-off-by: Toke Høiland-Jørgensen 
Signed-off-by: Rajkumar Manoharan 
Signed-off-by: Johannes Berg

mac80211: debugfs: avoid variable shadowing

2018-11-09T10:14:51+00:00

We have a macro here that uses an inner variable 'i' that
also exists in the outer scope - use '_i' in the macro.

Signed-off-by: Johannes Berg

wireless: align to draft 11ax D3.0

2018-09-05T08:09:50+00:00

Align to new 11ax draft D3.0.  Change/add new MAC and PHY capabilities
and update drivers' 11ax capabilities and mac80211's debugfs
accordingly.

Signed-off-by: Shaul Triebitz 
Signed-off-by: Luca Coelho 
Signed-off-by: Johannes Berg

mac80211: add an optional TXQ for other PS-buffered frames

2018-09-05T08:03:13+00:00

Some drivers may want to also use the TXQ abstraction with
non-data packets that need powersave buffering, so add a
hardware flag to allow this.

Signed-off-by: Johannes Berg

mac80211: Add he_capa debugfs entry

2018-09-05T08:03:13+00:00

Export HE capabilities information via debugfs, similar to HT & VHT.

Signed-off-by: Ido Yariv 
Signed-off-by: Luca Coelho 
Signed-off-by: Johannes Berg