Commit Graph

722 Commits

Author SHA1 Message Date
Denis Kenzior f8b43c5cf4 mac80211: Correctly set noencrypt for PAE frames
The noencrypt flag was intended to be set if the "frame was received
unencrypted" according to include/uapi/linux/nl80211.h.  However, the
current behavior is opposite of this.

Cc: stable@vger.kernel.org
Fixes: 018f6fbf54 ("mac80211: Send control port frames over nl80211")
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Link: https://lore.kernel.org/r/20190827224120.14545-3-denkenz@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-08-29 16:40:00 +02:00
Denis Kenzior c8a41c6afa mac80211: Don't memset RXCB prior to PAE intercept
In ieee80211_deliver_skb_to_local_stack intercepts EAPoL frames if
mac80211 is configured to do so and forwards the contents over nl80211.
During this process some additional data is also forwarded, including
whether the frame was received encrypted or not.  Unfortunately just
prior to the call to ieee80211_deliver_skb_to_local_stack, skb->cb is
cleared, resulting in incorrect data being exposed over nl80211.

Fixes: 018f6fbf54 ("mac80211: Send control port frames over nl80211")
Cc: stable@vger.kernel.org
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Link: https://lore.kernel.org/r/20190827224120.14545-2-denkenz@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-08-29 16:38:36 +02:00
Linus Torvalds c884d8ac7f SPDX update for 5.2-rc6
Another round of SPDX updates for 5.2-rc6
 
 Here is what I am guessing is going to be the last "big" SPDX update for
 5.2.  It contains all of the remaining GPLv2 and GPLv2+ updates that
 were "easy" to determine by pattern matching.  The ones after this are
 going to be a bit more difficult and the people on the spdx list will be
 discussing them on a case-by-case basis now.
 
 Another 5000+ files are fixed up, so our overall totals are:
 	Files checked:            64545
 	Files with SPDX:          45529
 
 Compared to the 5.1 kernel which was:
 	Files checked:            63848
 	Files with SPDX:          22576
 This is a huge improvement.
 
 Also, we deleted another 20000 lines of boilerplate license crud, always
 nice to see in a diffstat.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXQyQYA8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymnGQCghETUBotn1p3hTjY56VEs6dGzpHMAnRT0m+lv
 kbsjBGEJpLbMRB2krnaU
 =RMcT
 -----END PGP SIGNATURE-----

Merge tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

Pull still more SPDX updates from Greg KH:
 "Another round of SPDX updates for 5.2-rc6

  Here is what I am guessing is going to be the last "big" SPDX update
  for 5.2. It contains all of the remaining GPLv2 and GPLv2+ updates
  that were "easy" to determine by pattern matching. The ones after this
  are going to be a bit more difficult and the people on the spdx list
  will be discussing them on a case-by-case basis now.

  Another 5000+ files are fixed up, so our overall totals are:
	Files checked:            64545
	Files with SPDX:          45529

  Compared to the 5.1 kernel which was:
	Files checked:            63848
	Files with SPDX:          22576

  This is a huge improvement.

  Also, we deleted another 20000 lines of boilerplate license crud,
  always nice to see in a diffstat"

* tag 'spdx-5.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (65 commits)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 507
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 506
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 505
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 503
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 502
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 501
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 498
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 497
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 496
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 495
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 490
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 489
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 488
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 487
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 486
  treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 485
  ...
2019-06-21 09:58:42 -07:00
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
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 <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Johannes Berg 588f7d39b3 mac80211: drop robust management frames from unknown TA
When receiving a robust management frame, drop it if we don't have
rx->sta since then we don't have a security association and thus
couldn't possibly validate the frame.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 15:46:33 +02:00
David S. Miller 30e5a9a5ba Various updates, notably:
* extended key ID support (from 802.11-2016)
  * per-STA TX power control support
  * mac80211 TX performance improvements
  * HE (802.11ax) updates
  * mesh link probing support
  * enhancements of multi-BSSID support (also related to HE)
  * OWE userspace processing support
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAlzC5YYACgkQB8qZga/f
 l8QDWg/+N7wm+l7bTMx4hjJzZZ60n9fBvyGJx0gsnPVH8wdOiPoh/epuI04I8I4m
 pGNbGvPB9Z4z2tD56XsIQnXf88ab3R27bRupSSW1vtzVSbDhg8wQ7jg0nABrdyDS
 PgoTmDMfVERLewXdntqRANzVYGfoWSOzo1u6A0Xhys8FqxxX/eD+Vdo4dKzmeN47
 +LDfuCpInVPn0TOpFp5IJ4+B4a0dhkz2/Q1BOE7NquXVvk4X77VJohV/BgQJ04Io
 yt7mn5rzYM6j4o1XLACxUEHkXvht6h34abG0yHRnuoAEp/sdPz2jAXT4OxYqs6x0
 XdLdr8gZgkMnnYaOQef74uJ2Ku+4A1ootjXSPazA7BWX0X5GqHnET/INk2S6cQPj
 C95LYfKC0ICD0qfioBmmHx8icDGoovcaswCju2ozfqWaD4Lwr3BcesnNDFtkHD9o
 aYaTTGGSxFyr2bZWTDpv4D4H5g3V4srRJsXs+SokL54nvlwd/smUJ4PVTLomP9y2
 XswRtLdoiUsCrJy967CXfhsxnE5SRhmBQE38Jq8/pzetlRk2spvJJC5MGYF0O/nT
 0UHbrjBCFUT2s8jv+gWWabOBUovsNJlgaxFwrZ/eNVIk0DK0ERoMV3V4MktU8uza
 Y339T14kxw4wlY2z5pOmEgkxmKZbPb55dBba04JEZzz9zDTawTk=
 =JQOx
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-davem-2019-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Various updates, notably:
 * extended key ID support (from 802.11-2016)
 * per-STA TX power control support
 * mac80211 TX performance improvements
 * HE (802.11ax) updates
 * mesh link probing support
 * enhancements of multi-BSSID support (also related to HE)
 * OWE userspace processing support
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26 16:05:52 -04:00
Alexander Wetzel 96fc6efb9a mac80211: IEEE 802.11 Extended Key ID support
Add support for Extended Key ID as defined in IEEE 802.11-2016.

 - Implement the nl80211 API for Extended Key ID
 - Extend mac80211 API to allow drivers to support Extended Key ID
 - Enable Extended Key ID by default for drivers only supporting SW
   crypto (e.g. mac80211_hwsim)
 - Allow unicast Tx usage to be supressed (IEEE80211_KEY_FLAG_NO_AUTO_TX)
 - Select the decryption key based on the MPDU keyid
 - Enforce existing assumptions in the code that rekeys don't change the
   cipher

Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
[remove module parameter]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-04-26 13:02:11 +02:00
Felix Fietkau b49c15e121 mac80211: un-schedule TXQs on powersave start
Once a station enters powersave, its queues should not be returned by
ieee80211_next_txq() anymore. They will be re-scheduled again after the
station has woken up again

Fixes: 1866760096 ("mac80211: Add TXQ scheduling API")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-03-29 11:14:11 +01:00
David S. Miller 70f3522614 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three conflicts, one of which, for marvell10g.c is non-trivial and
requires some follow-up from Heiner or someone else.

The issue is that Heiner converted the marvell10g driver over to
use the generic c45 code as much as possible.

However, in 'net' a bug fix appeared which makes sure that a new
local mask (MDIO_AN_10GBT_CTRL_ADV_NBT_MASK) with value 0x01e0
is cleared.

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-24 12:06:19 -08:00
Felix Fietkau 51d0af222f mac80211: allocate tailroom for forwarded mesh packets
Forwarded packets enter the tx path through ieee80211_add_pending_skb,
which skips the ieee80211_skb_resize call.
Fixes WARN_ON in ccmp_encrypt_skb and resulting packet loss.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 14:00:40 +01:00
Liad Kaufman c15353be91 mac80211: fix position of vendor_data read
The ieee80211_vendor_radiotap was read from the beginning
of the skb->data regardless of the existence of other
elements in radiotap that would cause it to move to another
position. Fix this by taking into account where it really
should be.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-02-22 13:45:38 +01:00
Mathieu Malaterre 7c53eb5d87 mac80211: Add attribute aligned(2) to struct 'action'
During refactor in commit 9e478066ea ("mac80211: fix MU-MIMO
follow-MAC mode") a new struct 'action' was declared with packed
attribute as:

  struct {
          struct ieee80211_hdr_3addr hdr;
          u8 category;
          u8 action_code;
  } __packed action;

But since struct 'ieee80211_hdr_3addr' is declared with an aligned
keyword as:

  struct ieee80211_hdr {
  	__le16 frame_control;
  	__le16 duration_id;
  	u8 addr1[ETH_ALEN];
  	u8 addr2[ETH_ALEN];
  	u8 addr3[ETH_ALEN];
  	__le16 seq_ctrl;
  	u8 addr4[ETH_ALEN];
  } __packed __aligned(2);

Solve the ambiguity of placing aligned structure in a packed one by
adding the aligned(2) attribute to struct 'action'.

This removes the following warning (W=1):

  net/mac80211/rx.c:234:2: warning: alignment 1 of 'struct <anonymous>' is less than 2 [-Wpacked-not-aligned]

Cc: Johannes Berg <johannes.berg@intel.com>
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-01-25 10:17:25 +01:00
Bob Copeland a0dc02039a mac80211: fix miscounting of ttl-dropped frames
In ieee80211_rx_h_mesh_fwding, we increment the 'dropped_frames_ttl'
counter when we decrement the ttl to zero.  For unicast frames
destined for other hosts, we stop processing the frame at that point.

For multicast frames, we do not rebroadcast it in this case, but we
do pass the frame up the stack to process it on this STA.  That
doesn't match the usual definition of "dropped," so don't count
those as such.

With this change, something like `ping6 -i0.2 ff02::1%mesh0` from a
peer in a ttl=1 network no longer increments the counter rapidly.

Signed-off-by: Bob Copeland <bobcopeland@fb.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-01-19 09:11:44 +01:00
David S. Miller 5a862f86b8 This time we have too many changes to list, highlights:
* virt_wifi - wireless control simulation on top of
    another network interface
  * hwsim configurability to test capabilities similar
    to real hardware
  * various mesh improvements
  * various radiotap vendor data fixes in mac80211
  * finally the nl_set_extack_cookie_u64() we talked
    about previously, used for
  * peer measurement APIs, right now only with FTM
    (flight time measurement) for location
  * made nl80211 radio/interface announcements more complete
  * various new HE (802.11ax) things:
    updates, TWT support, ...
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAlwaCwkACgkQB8qZga/f
 l8S7mA/+I1CJmGC7Pvy+SBFkzoY5zEjjzgZYL6sGo16qMs89NPcURSe5j+uCsDP3
 nKEjsvhQMYDfGNLTJJfWbDpGwm9LnKp69AFITlvfzmP6Sm36QMZr7oIC4abi8cW4
 osaO3qfdaNoZ//x72jgjrFhUAnphvT2BsRVMNEjz7sXcDd7Jm9NnpRhV8zgXFvLF
 dS2Ng51LM/BLMz5jQpyJUDZeeL/iBYybCecyckmVqzXPh1icIZETSqZXiN4ngv2A
 6p9BSGNtP6wmjnbkvZz5RDq76VhTPZWsTgTpVb45Wf1k2fm1rB96UgpqvfQtjTgB
 +7Zx2WRpMXM5OjGkwaEs8nawFmt7MHCGnhLPLWPCbXc685fhp3OFShysMJdYS/GZ
 IIRJ7+IchAQX1yluftB+NkQM9sBDjyseMBwxHRYkj/rQVhoLY1sT+ke7lkuV10o6
 DQqfpUTZAsIz7zkuscn7hkNdI/Rjub6BZjbrs1Jt9zSt9WQUBao23XudOI0j5JDa
 ErnfC5PISXMQWik5B9M1Zhq3H9qCI2Swh19lMmtxtSDQ9yrLrJkEJ5SA+aHoxNHj
 wSxBc3XXSW47qPXGX/D5DNnbOcOrE7kVZuD8YqRsy8VedyjIgEw7oQ21flAD4FC4
 R4TgbNkqpfZQsU29gaMkDkYXnfQDB/G9FOk6ARGxjBPjT55Hz0E=
 =EpyK
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-davem-2018-12-19' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
This time we have too many changes to list, highlights:
 * virt_wifi - wireless control simulation on top of
   another network interface
 * hwsim configurability to test capabilities similar
   to real hardware
 * various mesh improvements
 * various radiotap vendor data fixes in mac80211
 * finally the nl_set_extack_cookie_u64() we talked
   about previously, used for
 * peer measurement APIs, right now only with FTM
   (flight time measurement) for location
 * made nl80211 radio/interface announcements more complete
 * various new HE (802.11ax) things:
   updates, TWT support, ...
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-19 08:36:18 -08:00
Ilan Peer d359bbce06 mac80211: Properly access radiotap vendor data
The radiotap vendor data might be placed after some other
radiotap elements, and thus when accessing it, need to access
the correct offset in the skb data. Fix the code accordingly.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-12-19 09:41:10 +01:00
Johannes Berg efc38dd7d5 mac80211: fix radiotap vendor presence bitmap handling
Due to the alignment handling, it actually matters where in the code
we add the 4 bytes for the presence bitmap to the length; the first
field is the timestamp with 8 byte alignment so we need to add the
space for the extra vendor namespace presence bitmap *before* we do
any alignment for the fields.

Move the presence bitmap length accounting to the right place to fix
the alignment for the data properly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-12-19 09:39:01 +01:00
Ilan Peer 8020919a9b mac80211: Properly handle SKB with radiotap only
The monitor interface Rx handling of SKBs that contain only
radiotap information was buggy as it tried to access the
SKB assuming it contains a frame.

To fix this, check the RX_FLAG_NO_PSDU flag in the Rx status
(indicting that the SKB contains only radiotap information),
and do not perform data path specific processing when the flag
is set.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-12-18 13:15:25 +01:00
Emmanuel Grumbach 990d71846a mac80211: ignore NullFunc frames in the duplicate detection
NullFunc packets should never be duplicate just like
QoS-NullFunc packets.

We saw a client that enters / exits power save with
NullFunc frames (and not with QoS-NullFunc) despite the
fact that the association supports HT.
This specific client also re-uses a non-zero sequence number
for different NullFunc frames.
At some point, the client had to send a retransmission of
the NullFunc frame and we dropped it, leading to a
misalignment in the power save state.
Fix this by never consider a NullFunc frame as duplicate,
just like we do for QoS NullFunc frames.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=201449

CC: <stable@vger.kernel.org>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-12-05 12:34:49 +01:00
Yan-Hsuan Chuang c752cac9db mac80211: fix GFP_KERNEL under tasklet context
cfg80211_sta_opmode_change_notify needs a gfp_t flag to hint the nl80211
stack when allocating new skb, but it is called under tasklet context
here with GFP_KERNEL and kernel will yield a warning about it.

Cc: stable@vger.kernel.org
Fixes: ff84e7bfe1 ("mac80211: Add support to notify ht/vht opmode modification.")
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
ACKed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-11-09 08:56:12 +01:00
Johannes Berg 42dca5ef24 mac80211: avoid reflecting frames back to the client
I'm not really sure exactly _why_ I've been carrying a note
for what's probably _years_ to check that we don't do this,
but we clearly do reflect frames back to the station itself
if it sends such.

One way or the other, it's useless since the station doesn't
really need the AP to talk to itself, so suppress it.

While at it, clarify some of the logic by removing skb->data
references in favour of the destination address (pointer) we
already have separately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11 16:00:59 +02:00
David S. Miller 7957a9dea8 mac80211: Don't access sk_queue_head->next directly.
Use __skb_peek() instead.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-10 10:06:53 -07:00
Shaul Triebitz c3d1f87528 mac80211: support reporting 0-length PSDU in radiotap
For certain sounding frames, it may be useful to report them
to userspace even though they don't have a PSDU in order to
determine the PHY parameters (e.g. VHT rate/stream config.)
Add support for this to mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05 10:08:25 +02:00
Shaul Triebitz d1332e7be2 mac80211: support radiotap L-SIG data
As before with HE, the data needs to be provided by the
driver in the skb head, since there's not enough space
in the skb CB.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05 10:03:15 +02:00
Johannes Berg adf8ed01e4 mac80211: add an optional TXQ for other PS-buffered frames
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 <johannes.berg@intel.com>
2018-09-05 10:03:13 +02:00
Johannes Berg 331aead520 mac80211: use le16_encode_bits() instead of open-coding
Instead of open-coding the equivalent of le16_encode_bits(),
just use that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-05 10:03:13 +02:00
David S. Miller 36302685f5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-09-04 21:33:03 -07:00
David S. Miller fc3e3bf55f Here are quite a large number of fixes, notably:
* various A-MSDU building fixes (currently only affects mt76)
  * syzkaller & spectre fixes in hwsim
  * TXQ vs. teardown fix that was causing crashes
  * embed WMM info in reg rule, bad code here had been causing crashes
  * one compilation issue with fix from Arnd (rfkill-gpio includes)
  * fixes for a race and bad data during/after channel switch
  * nl80211: a validation fix, attribute type & unit fixes
 along with other small fixes.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAluNJXcACgkQB8qZga/f
 l8Qvfw//dBwlhMII862Evk4M8OzhdHfkJ4Kp/d2C476whbEySU/jRIIeetmVpXYV
 5cfStTxBpGkwMj5PXy3DaA2PO++L5qaApDJfHc8DNWNmvt9rRRJul1zP05HjZRxW
 G7aFCFRWVK0dlmVP9GC/b20KyUvz4OpklBnxylkIrx0FCkw5bAHs1SsjGZCg/6Tm
 008DAhFz3Ds6hNLxwricvrk5oQ6eC1cDfDd4Rtk3jCYQ4t7KFn5gFoKzKldfLdWe
 TFTpVQ26XAGzn9QVXzAiXN4ZNpUpZrFXosC7cn5Ugiyic4YtnHxS2wVDuL3vs1cL
 J2hoW6wjEBg+U6vmHMcijo1lnQwW7ueYUDWLJPNIXHA6A7sGyA6z6D7vbbvHfoG6
 L681BrYmTmKkXXquu5+r85/9WgP2cmzbRpoIxTQl3sU2Liw2k5IJ9ryLLyul+8z7
 spnDPOY7h4c0JrAvhjHkrKIbbW4FKYunxZJ8dn9eyAzOd/58iKoXzu4yAggwm+0V
 DtZiu0gSr52sKrh1vqEyfhrPFCN1Mc19DRsJBtabUfVEveQTwToCkbZ5s1sLqSId
 m30XUjjYOiRk7MZnncar0lE4//eJ6bnL3Wie3UTmO3xsMwlgKQPqjI4TprNogUCk
 R2dVeGmhm3HSriRHKJL3/D8uzw5mMBI3Kicw9tFSSyVjtJgxvpg=
 =lLBA
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-for-davem-2018-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Here are quite a large number of fixes, notably:
 * various A-MSDU building fixes (currently only affects mt76)
 * syzkaller & spectre fixes in hwsim
 * TXQ vs. teardown fix that was causing crashes
 * embed WMM info in reg rule, bad code here had been causing crashes
 * one compilation issue with fix from Arnd (rfkill-gpio includes)
 * fixes for a race and bad data during/after channel switch
 * nl80211: a validation fix, attribute type & unit fixes
along with other small fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-03 22:12:02 -07:00
Sathishkumar Muruganandam 1ecef20cf1 mac80211: add missing WFA Multi-AP backhaul STA Rx requirement
The current mac80211 WDS (4-address mode) can be used to cover most of the
Multi-AP requirements for Data frames per the WFA Multi-AP Specification v1.0.
When configuring AP/STA interfaces in 4-address mode, they are able to function
as fronthaul AP/backhaul STA of Multi-AP device complying below
Tx, Rx requirements except one missing STA Rx requirement added by this patch.

Multi-AP specification section 14.1 describes the following requirements:

Transmitter requirements
------------------------
1. Fronthaul AP
        i) When DA!=RA of backhaul STA, must use 4-address format
        ii) When DA==RA of backhaul STA, shall use either 3-address
            or 4-address format with RA updated with STA MAC

            (mac80211 support 4-address format via AP/VLAN interface)

2. Backhaul STA
        i) When SA!=TA of backhaul STA, must use 4-address format
        ii) When SA==TA of backhaul STA, shall use either 3-address
            or 4-address format with RA updated with AP MAC

            (mac80211 support 4-address format via use_4addr)

Receiver requirements
---------------------
1. Fronthaul AP
        i) When SA!=TA of backhaul STA, must support receiving 4-address
           format frames
        ii) When SA==TA of backhaul STA, must support receiving both
            3-address and 4-address format frames

            (mac80211 support both 3-addr & 4-addr via AP/VLAN interface)

2. Backhaul STA
        i) When DA!=RA of backhaul STA, must support receiving 4-address
           format frames
        ii) When DA==RA of backhaul STA,  must support receiving both
            3-address and 4-address format frames

            (mac80211 support only receiving 4-address format via
             use_4addr)

This patch addresses the above Rx requirement (ii) for backhaul STA to receive
unicast (DA==RA) 3-address frames in addition to 4-address frames.

The current design doesn't accept 3-address frames when configured in 4-address
mode (use_4addr). Hence add a check to allow 3-address frames when DA==RA of
backhaul STA (adhering to Table 9-26 of IEEE Std 802.11™-2016).

This case was tested with a bridged station interface when associated with
a non-mac80211 based vendor AP implementation using 3-address frames for WDS.

STA was able to support the Multi-AP Rx requirement when DA==RA. No issues,
no loops seen when tested with mac80211 based AP as well.

Verified and confirmed all other Tx and Rx requirements of AP and STA for
Multi-AP respectively. They all work using the current mac80211-WDS design.

Signed-off-by: Sathishkumar Muruganandam <murugana@codeaurora.org>

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-29 09:25:17 +02:00
Emmanuel Grumbach 20932750d9 mac80211: don't update the PM state of a peer upon a multicast frame
I changed the way mac80211 updates the PM state of the peer.
I forgot that we could also have multicast frames from the
peer and that those frame should of course not change the
PM state of the peer: A peer goes to power save when it
needs to scan, but it won't send the broadcast Probe Request
with the PM bit set.

This made us mark the peer as awake when it wasn't and then
Intel's firmware would fail to transmit because the peer is
asleep according to its database. The driver warned about
this and it looked like this:

 WARNING: CPU: 0 PID: 184 at /usr/src/linux-4.16.14/drivers/net/wireless/intel/iwlwifi/mvm/tx.c:1369 iwl_mvm_rx_tx_cmd+0x53b/0x860
 CPU: 0 PID: 184 Comm: irq/124-iwlwifi Not tainted 4.16.14 #1
 RIP: 0010:iwl_mvm_rx_tx_cmd+0x53b/0x860
 Call Trace:
  iwl_pcie_rx_handle+0x220/0x880
  iwl_pcie_irq_handler+0x6c9/0xa20
  ? irq_forced_thread_fn+0x60/0x60
  ? irq_thread_dtor+0x90/0x90

The relevant code that spits the WARNING is:

        case TX_STATUS_FAIL_DEST_PS:
                /* the FW should have stopped the queue and not
                 * return this status
                 */
                WARN_ON(1);
                info->flags |= IEEE80211_TX_STAT_TX_FILTERED;

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=199967.

Fixes: 9fef654433 ("mac80211: always update the PM state of a peer on MGMT / DATA frames")
Cc: <stable@vger.kernel.org>   #4.16+
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-28 11:12:42 +02:00
David S. Miller 19725496da Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-07-24 19:21:58 -07:00
Denis Kenzior a948f71384 nl80211/mac80211: allow non-linear skb in rx_control_port
The current implementation of cfg80211_rx_control_port assumed that the
caller could provide a contiguous region of memory for the control port
frame to be sent up to userspace.  Unfortunately, many drivers produce
non-linear skbs, especially for data frames.  This resulted in userspace
getting notified of control port frames with correct metadata (from
address, port, etc) yet garbage / nonsense contents, resulting in bad
handshakes, disconnections, etc.

mac80211 linearizes skbs containing management frames.  But it didn't
seem worthwhile to do this for control port frames.  Thus the signature
of cfg80211_rx_control_port was changed to take the skb directly.
nl80211 then takes care of obtaining control port frame data directly
from the (linear | non-linear) skb.

The caller is still responsible for freeing the skb,
cfg80211_rx_control_port does not take ownership of it.

Fixes: 6a671a50f8 ("nl80211: Add CMD_CONTROL_PORT_FRAME API")
Signed-off-by: Denis Kenzior <denkenz@gmail.com>
[fix some kernel-doc formatting, add fixes tag]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-07-06 14:34:42 +02:00
Luca Coelho 41cbb0f5a2 mac80211: add support for HE
Add support for HE in mac80211 conforming with P802.11ax_D1.4.

Johannes: Fix another bug with the buf_size comparison in agg-rx.c.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-18 22:40:32 +02:00
Johannes Berg b9771d41ae mac80211: support scan features for improved scan privacy
Support the new random SN and minimal probe request contents
scan flags for the case of software scan - for hardware scan
the drivers need to opt in, but may need to do only that,
depending on their implementation.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2018-06-15 13:34:40 +02:00
Johannes Berg c096b92aa7 mac80211: rename rtap_vendor_space to rtap_space
Since all the HE data won't fit into struct ieee80211_rx_status,
we'll (have to) move that into the SKB proper. This means we'll
need to skip over more things in the future, so rename this to
remove the vendor-only notion from it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-07 20:49:44 +02:00
Denis Kenzior 018f6fbf54 mac80211: Send control port frames over nl80211
If userspace requested control port frames to go over 80211, then do so.
The control packets are intercepted just prior to delivery of the packet
to the underlying network device.

Pre-authentication type frames (protocol: 0x88c7) are also forwarded
over nl80211.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 14:08:30 +02:00
tamizhr@codeaurora.org 97f5f4254a mac80211: Use proper chan_width enum in sta opmode event
Bandwidth change value reported via nl80211 contains mac80211
specific enum value(ieee80211_sta_rx_bw) and which is not
understand by userspace application. Map the mac80211 specific
value to nl80211_chan_width enum value to avoid using wrong value
in the userspace application. And used station's ht/vht capability
to map IEEE80211_STA_RX_BW_20 and IEEE80211_STA_RX_BW_160 with
proper nl80211 value.

Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 10:19:59 +02:00
tamizhr@codeaurora.org 57566b2003 mac80211: Use proper smps_mode enum in sta opmode event
SMPS_MODE change value notified via nl80211 contains mac80211
specific value(ieee80211_smps_mode) and user space application
will not know those values. This patch add support to map
the mac80211 enum value to nl80211_smps_mode which will be
understood by the userspace application.

Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-29 10:19:55 +02:00
Tosoni 1ad22fb5bb mac80211: inform wireless layer when frame RSSI is invalid
When the low-level driver returns an invalid RSSI indication,
set the signal value to 0 as an indication to the upper layer.

Also, skip average level computation if signal is invalid.

Signed-off-by: Jean Pierre TOSONI <jp.tosoni@acksys.fr>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-03-21 11:27:11 +01:00
Joe Perches 0c3d5a96d5 net: drivers/net: Remove unnecessary skb_copy_expand OOM messages
skb_copy_expand without __GFP_NOWARN already does a dump_stack
on OOM so these messages are redundant.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-15 14:28:03 -04:00
David S. Miller 0f3e9c97eb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
All of the conflicts were cases of overlapping changes.

In net/core/devlink.c, we have to make care that the
resouce size_params have become a struct member rather
than a pointer to such an object.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-06 01:20:46 -05:00
Felix Fietkau 24bba078ec mac80211: support A-MSDU in fast-rx
Only works if the IV was stripped from packets. Create a smaller
variant of ieee80211_rx_h_amsdu, which bypasses checks already done
within the fast-rx context.

In order to do so, update cfg80211's ieee80211_data_to_8023_exthdr()
to take the offset between header and snap.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-27 13:30:53 +01:00
Felix Fietkau 9251a4736e mac80211: support station 4-addr mode fast-rx
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-27 11:05:52 +01:00
Felix Fietkau 1d87016241 mac80211: support fast-rx with incompatible PS capabilities when PS is disabled
When powersave is disabled for the interface, we can do fast-rx anyway.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
[fixed indentation on one line]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-27 11:05:52 +01:00
Felix Fietkau 59cae5b9d6 mac80211: support AP 4-addr mode fast-rx
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-27 11:05:51 +01:00
Felix Fietkau b323ac19b7 mac80211: drop frames with unexpected DS bits from fast-rx to slow path
Fixes rx for 4-addr packets in AP mode. These may be used for setting
up a 4-addr link for stations that are allowed to do so.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-23 12:13:17 +01:00
Sara Sharon a1f2ba04cc mac80211: add get TID helper
Extracting the TID from the QOS header is common enough
to justify helper.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-22 21:13:03 +01:00
Johannes Berg 7299d6f7bf mac80211: support reporting A-MPDU EOF bit value/known
Support getting the EOF bit value reported from hardware
and writing it out to radiotap.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-02-22 21:13:02 +01:00
tamizhr@codeaurora.org ff84e7bfe1 mac80211: Add support to notify ht/vht opmode modification.
This will add support to send an event to a userspace application
whenever station advertise its ht/vht opmode modification through
an action frame.

Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-01-31 13:00:03 +01:00
David S. Miller a0ce093180 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-09 10:37:00 -05:00
Johannes Berg 736a80bbfd mac80211: mesh: drop frames appearing to be from us
If there are multiple mesh stations with the same MAC address,
they will both get confused and start throwing warnings.

Obviously in this case nothing can actually work anyway, so just
drop frames that look like they're from ourselves early on.

Reported-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-01-04 15:51:53 +01:00