Commit Graph

575 Commits

Author SHA1 Message Date
Johannes Berg
5a490510ba mac80211: use per-CPU TX/RX statistics
This isn't all that relevant for RX right now, but TX can be concurrent
due to multi-queue and the accounting is therefore broken.

Use the standard per-CPU statistics to avoid this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:16:11 +02:00
Johannes Berg
6fe3eac793 mac80211: OCB: remove pointless check for broadcast BSSID
The OCB input path already checked that the BSSID is the broadcast
address, so the later check can never fail.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:14:14 +02:00
Johannes Berg
a58fbe1a85 mac80211: clean up/rename prepare_for_handlers()
The function really shouldn't be called prepare_for_handlers(),
all it does is check if the frame should be dropped. Rename it
to ieee80211_accept_frame() and clean it up a bit.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:14:14 +02:00
Johannes Berg
5c90067c0f mac80211: remove IEEE80211_RX_RA_MATCH
With promisc support gone, only AP and P2P-Device type interfaces
still clear IEEE80211_RX_RA_MATCH. In both cases this isn't really
necessary though, so we can remove that flag and the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:14:13 +02:00
Johannes Berg
df1404650c mac80211: remove support for IFF_PROMISC
This support is essentially useless as typically networks are encrypted,
frames will be filtered by hardware, and rate scaling will be done with
the intended recipient in mind. For real monitoring of the network, the
monitor mode support should be used instead.

Removing it removes a lot of corner cases.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:14:13 +02:00
Johannes Berg
17c18bf880 mac80211: add TX fastpath
In order to speed up mac80211's TX path, add the "fast-xmit" cache
that will cache the data frame 802.11 header and other data to be
able to build the frame more quickly. This cache is rebuilt when
external triggers imply changes, but a lot of the checks done per
packet today are simplified away to the check for the cache.

There's also a more detailed description in the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-22 10:02:25 +02:00
David S. Miller
4e78eb0dbf There isn't much left, but we have
* new mac80211 internal software queue to allow drivers to have
    shorter hardware queues and pull on-demand
  * use rhashtable for mac80211 station table
  * minstrel rate control debug improvements and some refactoring
  * fix noisy message about TX power reduction
  * fix continuous message printing and activity if CRDA doesn't respond
  * fix VHT-related capabilities with "iw connect" or "iwconfig ..."
  * fix Kconfig for cfg80211 wireless extensions compatibility
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABCAAGBQJVJ7CPAAoJEDBSmw7B7bqr8+IQAKCAbUyd6PFRT5tcz9kW5GCW
 /ibb+n1e14yWKgNEe1gddUGKG/L3HGCBXNkCYzR2M8mlL7dLPqspaBcGHS4dx8F4
 D0AuikqvtXIxfAXi0zmU2uo7rH7u2X34R2LtS8AlKByD+jmFvxMiPPvxNFgzJu/7
 63UQm73p2pnu/KdXLW1OQEcpZtZJ9+N/uBiq9zbVdX3A8T84ME0oMyy+EAQqCZdK
 CcsTXHCnAgmmXWJlu1JRdopr1bd38mSGB70eXduFtPqDdmtQRnoaCQ9e+tJDA4j4
 svEw0yDmsc4WG1EKLKKCRd3uFOZsng+lcXrHfpm5wlSPpCOItfQ9BzT3x1u6Y5JU
 Z1WMOMkkEce+95U7/RLoXwC/2RS3XelUXTde4cGIRMvO5drOrU58P0gdn3J+yKbv
 6v+2GGKy/39tdXUOxIl3EZT/huIl+h1UNO8C2hyaEwdXK+X1zl31/u6kk1Ns18Wr
 YPEJixxHx0zR8jaZgDC7OlWLuqn4Ay+Ls9yCyIesdHzKpizJKqn83PntYnpJmxoA
 9hlIyRDWnqH44KxzB85ni1C2Qudec3mcCWIWV7M+UoSC1Cgs/LxDzH7kRejR2ZIl
 vRhg5pqyr53L0h2lq5DO4Cj4UzbXb7YioKJRxjyKloNOlRrCZtK/VEsHbdsKEcIp
 d/wHj1AyFZeQfuhk8Qqr
 =mtuo
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-davem-2015-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
There isn't much left, but we have
 * new mac80211 internal software queue to allow drivers to have
   shorter hardware queues and pull on-demand
 * use rhashtable for mac80211 station table
 * minstrel rate control debug improvements and some refactoring
 * fix noisy message about TX power reduction
 * fix continuous message printing and activity if CRDA doesn't respond
 * fix VHT-related capabilities with "iw connect" or "iwconfig ..."
 * fix Kconfig for cfg80211 wireless extensions compatibility
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-12 20:43:46 -04:00
David S. Miller
9f0d34bc34 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/usb/asix_common.c
	drivers/net/usb/sr9800.c
	drivers/net/usb/usbnet.c
	include/linux/usb/usbnet.h
	net/ipv4/tcp_ipv4.c
	net/ipv6/tcp_ipv6.c

The TCP conflicts were overlapping changes.  In 'net' we added a
READ_ONCE() to the socket cached RX route read, whilst in 'net-next'
Eric Dumazet touched the surrounding code dealing with how mini
sockets are handled.

With USB, it's a case of the same bug fix first going into net-next
and then I cherry picked it back into net.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-02 16:16:53 -04:00
Felix Fietkau
ba8c3d6f16 mac80211: add an intermediate software queue implementation
This allows drivers to request per-vif and per-sta-tid queues from which
they can pull frames. This makes it easier to keep the hardware queues
short, and to improve fairness between clients and vifs.

The task of scheduling packet transmission is left up to the driver -
queueing is controlled by mac80211. Drivers can only dequeue packets by
calling ieee80211_tx_dequeue. This makes it possible to add active queue
management later without changing drivers using this code.

This can also be used as a starting point to implement A-MSDU
aggregation in a way that does not add artificially induced latency.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[resolved minor context conflict, minor changes, endian annotations]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 20:44:34 +02:00
Johannes Berg
788211d81b mac80211: fix RX A-MPDU session reorder timer deletion
There's an issue with the way the RX A-MPDU reorder timer is
deleted that can cause a kernel crash like this:

 * tid_rx is removed - call_rcu(ieee80211_free_tid_rx)
 * station is destroyed
 * reorder timer fires before ieee80211_free_tid_rx() runs,
   accessing the station, thus potentially crashing due to
   the use-after-free

The station deletion is protected by synchronize_net(), but
that isn't enough -- ieee80211_free_tid_rx() need not have
run when that returns (it deletes the timer.) We could use
rcu_barrier() instead of synchronize_net(), but that's much
more expensive.

Instead, to fix this, add a field tracking that the session
is being deleted. In this case, the only re-arming of the
timer happens with the reorder spinlock held, so make that
code not rearm it if the session is being deleted and also
delete the timer after setting that field. This ensures the
timer cannot fire after ___ieee80211_stop_rx_ba_session()
returns, which fixes the problem.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 14:35:01 +02:00
Johannes Berg
7bedd0cfad mac80211: use rhashtable for station table
We currently have a hand-rolled table with 256 entries and are
using the last byte of the MAC address as the hash. This hash
is obviously very fast, but collisions are easily created and
we waste a lot of space in the common case of just connecting
as a client to an AP where we just have a single station. The
other common case of an AP is also suboptimal due to the size
of the hash table and the ease of causing collisions.

Convert all of this to use rhashtable with jhash, which gives
us the advantage of a far better hash function (with random
perturbation to avoid hash collision attacks) and of course
that the hash table grows and shrinks dynamically with chain
length, improving both cases above.

Use a specialised hash function (using jhash, but with fixed
length) to achieve better compiler optimisation as suggested
by Sergey Ryazanov.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 10:06:26 +02:00
David S. Miller
7b6249bba9 Lots of updates for net-next; along with the usual flurry
of small fixes, cleanups and internal features we have:
  * VHT support for TDLS and IBSS (conditional on drivers though)
  * first TX performance improvements (the biggest will come later)
  * many suspend/resume (race) fixes
  * name_assign_type support from Tom Gundersen
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABCAAGBQJVGWlNAAoJEDBSmw7B7bqr5s8P/R9+Q6y4Ixice9dDOJYynl/d
 dMEUEfCBWUyDaQD1bNQIED2mc0sM5+Ax8OVIVx9fdrLGPxaISBqDJKE1USoTNZzm
 q+U3dM4Q45SfQSsgaY4FtxTlPWPtUKsNMXY/CxLR+IqVeA3+30rX+hv1f3SAqBj0
 68IwW/uUIHb71IZ+hz2Mwudt4JVW8KRg9VlZ0UY6EEvC4m5QD2YkwQQo/hJ2WF+/
 wAJbku02L/Vy4J7E6hNcKYWXokht4fVYphjl/1ZDd/+8L8SUv9mC88n1Jzxa428p
 1PmbtwzbpOrtTcC2BCPDA04IyfMc7k9DlLKw/h2KLPbHZXheD9eVmo/Am5vz+uH6
 926f+FK339SzoJnZ5wBBDiZ8W8TLYNc8ImxtcxjnrtGfr1CKiuh23P1CWyOlKJCO
 BYFJqkCOqWOHYnN0embaj7JqM/LmQI5ZoBZHZhD2KQXIXpTsjjIMPfJvip5D+tsV
 +iXIlQwdeK6rbjxdonBgn7n57XIeSVMAYeyDCbzIShfibjHbUZPn+RsZCtv8RWv8
 EaZu8PerU5ZDKwdX940+lWrtf/TMDJBYQpAIBRuiZK4DTNWCt3BrDlvb1FXGgA+X
 vQJnr32vjJ/pLDxNLHQlkKWC4I/CYtG47OgcJN9AQXrig1zApd+C29zy3aqch3ea
 wxV9dFfheTqZFjtZfSsH
 =O/cf
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-davem-2015-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Lots of updates for net-next; along with the usual flurry
of small fixes, cleanups and internal features we have:
 * VHT support for TDLS and IBSS (conditional on drivers though)
 * first TX performance improvements (the biggest will come later)
 * many suspend/resume (race) fixes
 * name_assign_type support from Tom Gundersen
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-31 16:39:04 -04:00
Johannes Berg
e8f4fb7c7c mac80211: remove drop_unencrypted code
This mechanism was historic, and only ever used by IBSS, which
also doesn't need to have it as it properly manages station's
802.1X PAE state (or, with WEP, always has a key.)

Remove the mechanism to clean up the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-20 11:37:36 +01:00
Johannes Berg
45ceeee81e mac80211: add comment for rx_path_lock
Add a comment explaining how the RX path lock is used.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-16 09:08:20 +01:00
Johannes Berg
4cc0dba95a mac80211: move netdev stats to common function
Move the netdev stats accounting into the common function
ieee80211_deliver_skb() that is called in both places.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-16 09:05:27 +01:00
Bob Copeland
d0c22119f5 mac80211: drop unencrypted frames in mesh fwding
The mesh forwarding path was not checking that data
frames were protected when running an encrypted network;
add the necessary check.

Cc: stable@vger.kernel.org
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-03 09:27:28 +01:00
David S. Miller
940288b6a5 Last round of updates for net-next:
* revert a patch that caused a regression with mesh userspace (Bob)
  * fix a number of suspend/resume related races
    (from Emmanuel, Luca and myself - we'll look at backporting later)
  * add software implementations for new ciphers (Jouni)
  * add a new ACPI ID for Broadcom's rfkill (Mika)
  * allow using netns FD for wireless (Vadim)
  * some other cleanups (various)
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABCAAGBQJU0NEaAAoJEDBSmw7B7bqr2DAP/3nbk6WB2Lz4Vwi8fh9C4y6X
 4ZzN2v7NHaimC+Wpxg3wP2wCdX2VG3ZWwF3yLm6qgVHGnE35RFLxURen1eqNeW77
 Yf5gvZ066nCGEQ8l8J6YK9vrLX4qp5c4lyE00bbxpZTA4Qq71SgTg+rmGC1be8uX
 vacfaLwfDWffuOOnjBAPfanj7f4AQaUEY2uN1WkBFC7iEeOtPcWVkHAFVIeGjJfQ
 vfgQJcwOjgWjYbwZdQQi7Aj+k1Yzda4pg1yEWn3CkZ8zyeCYGs1gk2ovoBgPgXBP
 yT9ypIdFsN242VJvy7nkFnCKA8mhKyltMQ1Xjs0Q9lAxWdaq9U+iqt5cUn4jxVIG
 T9Vi3PCbx/nVOqcfR81dBTQ3uDU5AyosPsmh2YTxi5lpRBrsjNY2FtaKE0sm2Om3
 wRiSPOdPrXBeEnU0KssI9e6euXgS4JQV78Naq85OWZDd2yZ1fT5U2fi8y4drRGlz
 rucbbobdVhQch5L4FStPz1uW5pNuJrhekXeZIE8MruTNg2A2oBAK3ApO7hxn68sE
 RnbAnkxVLwgedC9042JF5eiS1PDIU46w4e782j/+XskVKMEakqd23iJycx3tmgHZ
 cxDi/qKZ2RCE74YsT61o/9ErSVPvCfNPL3+CVov918jidQQg2WHfKm/jFlIxHIxk
 4wBP7p2VGlENMgw/R8GJ
 =wOaR
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-davem-2015-02-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Last round of updates for net-next:
 * revert a patch that caused a regression with mesh userspace (Bob)
 * fix a number of suspend/resume related races
   (from Emmanuel, Luca and myself - we'll look at backporting later)
 * add software implementations for new ciphers (Jouni)
 * add a new ACPI ID for Broadcom's rfkill (Mika)
 * allow using netns FD for wireless (Vadim)
 * some other cleanups (various)

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-04 14:57:45 -08:00
David S. Miller
95f873f2ff Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	arch/arm/boot/dts/imx6sx-sdb.dts
	net/sched/cls_bpf.c

Two simple sets of overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-27 16:59:56 -08:00
Jouni Malinen
8ade538bf3 mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphers
This allows mac80211 to configure BIP-GMAC-128 and BIP-GMAC-256 to the
driver and also use software-implementation within mac80211 when the
driver does not support this with hardware accelaration.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27 11:10:13 +01:00
Jouni Malinen
56c52da2d5 mac80111: Add BIP-CMAC-256 cipher
This allows mac80211 to configure BIP-CMAC-256 to the driver and also
use software-implementation within mac80211 when the driver does not
support this with hardware accelaration.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27 11:09:13 +01:00
Jouni Malinen
2b2ba0db1c mac80111: Add CCMP-256 cipher
This allows mac80211 to configure CCMP-256 to the driver and also use
software-implementation within mac80211 when the driver does not support
this with hardware accelaration.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
[squash ccmp256 -> mic_len argument change]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27 11:07:35 +01:00
Jouni Malinen
00b9cfa3ff mac80111: Add GCMP and GCMP-256 ciphers
This allows mac80211 to configure GCMP and GCMP-256 to the driver and
also use software-implementation within mac80211 when the driver does
not support this with hardware accelaration.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
[remove a spurious newline]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27 11:06:09 +01:00
Johannes Berg
3d6dc3431e mac80211: fix per-TID RX-MSDU counter
In the case of non-QoS association, the counter was actually
wrong. The right index isn't security_idx but seqno_idx, as
security_idx will be 0 for data frames, while 16 is needed.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-23 13:26:25 +01:00
Mathy Vanhoef
3a5c5e81d8 mac80211: properly set CCK flag in radiotap
Fix a regression introduced by commit a5e70697d0 ("mac80211: add radiotap flag
and handling for 5/10 MHz") where the IEEE80211_CHAN_CCK channel type flag was
incorrectly replaced by the IEEE80211_CHAN_OFDM flag. This commit fixes that by
using the CCK flag again.

Cc: stable@vger.kernel.org
Fixes: a5e70697d0 ("mac80211: add radiotap flag and handling for 5/10 MHz")
Signed-off-by: Mathy Vanhoef <vanhoefm@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-23 10:53:58 +01:00
Johannes Berg
f89903d53f mac80211: remove 80+80 MHz rate reporting
These rates are treated the same as 160 MHz in the spec,
so it makes no sense to distinguish them. As no driver
uses them yet, this is also not a problem, just remove
them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-15 16:02:46 +01:00
Johannes Berg
79c892b850 mac80211: provide per-TID RX/TX MSDU counters
Implement the new counters cfg80211 can now advertise to userspace.
The TX code is in the sequence number handler, which is a bit odd,
but that place already knows the TID and frame type, so it was
easiest and least impact there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-08 15:28:20 +01:00
Johannes Berg
3a4b0c948d Merge branch 'mac80211' into mac80211-next
Merge mac80211.git to get some changes that would otherwise
cause conflicts with new changes coming here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-07 14:39:16 +01:00
Eliad Peller
1c45c5ce32 mac80211: update sta bw on ht chanwidth action frame
Commit e1a0c6b ("mac80211: stop toggling IEEE80211_HT_CAP_SUP_WIDTH_20_40")
mistakenly removed the actual update of sta->sta.bandwidth.

Refactor ieee80211_sta_cur_vht_bw() into multiple functions
(calculate caps-bw and chandef-bw separately, and min them
with cur_max_bandwidth).

On ht chanwidth action frame set only cur_max_bandwidth
(according to the sta capabilities) and recalc the sta bw.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-17 15:45:16 +01:00
Andreas Müller
d025933e29 mac80211: fix multicast LED blinking and counter
As multicast-frames can't be fragmented, "dot11MulticastReceivedFrameCount"
stopped being incremented after the use-after-free fix. Furthermore, the
RX-LED will be triggered by every multicast frame (which wouldn't happen
before) which wouldn't allow the LED to rest at all.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=89431 which also had the
patch.

Cc: stable@vger.kernel.org
Fixes: b8fff407a1 ("mac80211: fix use-after-free in defragmentation")
Signed-off-by: Andreas Müller <goo@stapelspeicher.org>
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 12:11:14 +01:00
John W. Linville
9a638ddfb0 It has been a while since my last pull request, so we accumulated
another relatively large set of changes:
  * TDLS off-channel support set from Arik/Liad, with some support
    patches I did
  * custom regulatory fixes from Arik
  * minstrel VHT fix (and a small optimisation) from Felix
  * add back radiotap vendor namespace support (myself)
  * random MAC address scanning for cfg80211/mac80211/hwsim (myself)
  * CSA improvements (Luca)
  * WoWLAN Net Detect (wake on network found) support (Luca)
  * and lots of other smaller changes from many people
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABCAAGBQJUbghkAAoJEDBSmw7B7bqroosP/RABYXUMua+k3Ccq7T4eU4jV
 AEO2p2gt5nHBzEl1NCJtdUTJkZ6ftT7ehvAkV2zboB0FBoAoBTbZ8YDtcBBiWaY6
 wJ5TYuOl6LFo7csAxWxpCzUxW3M+iq26itpyW9Zt9WWxP4QLSNPFyXEXV3SEh45n
 HcDW9A0SE+mgdaTQ2LEMBJ5XWxG/Ic7i9Xn6Py3o4x7NsTB4EqFNOD0WXcPCq7M0
 H8xlsIYIBYoGNMsV/2Nu7CEgcSXfDLqWcs9uPHQMCvWPjx/vIoEyOgTwJlE9bQHh
 2tloc1LBP6XKQ6g2bJ/pBaQVnZGugcOJhD6KUq3ckNm9qIP1ZtRmJslH4V6pUSCS
 eGl3TcAKSSE4BWIa7AaETWXeoH4X68dO7PM7pnflQRCQLzCJRbDWCdqjBst/AxBT
 6hvAFAvExEcWBkNVSTJ2egRk/C9cDFKRaCWQ1h4wX9yvh+8efe1D0DDWLW9a9qv1
 LsoGJE72BZdXn2CaQEME+CjTd3fWmn6u729d/c863cq2kspCSOof0QD0X9uWhBUx
 BvqtgbQjGZzAvHFcjBd7yRd5hz0aDfLyBL59bq2IBzaU1QmyekNPqzSMSD+5ZlCp
 uxEeE5AY2+pcNZV1KRtkvgAByfUgAVd0FHZcVb8SIM6QZ3IhqiOuzxuXtxv6hrYP
 V/76B+ath4Sv1IPF56ex
 =q4e6
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-john-2014-11-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg <johannes@sipsolutions.net> says:

"It has been a while since my last pull request, so we accumulated
another relatively large set of changes:
 * TDLS off-channel support set from Arik/Liad, with some support
   patches I did
 * custom regulatory fixes from Arik
 * minstrel VHT fix (and a small optimisation) from Felix
 * add back radiotap vendor namespace support (myself)
 * random MAC address scanning for cfg80211/mac80211/hwsim (myself)
 * CSA improvements (Luca)
 * WoWLAN Net Detect (wake on network found) support (Luca)
 * and lots of other smaller changes from many people"

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-11-20 16:09:30 -05:00
John W. Linville
ab1f5a532c Merge commit '4e6ce4dc7ce71d0886908d55129d5d6482a27ff9' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-11-19 15:38:48 -05:00
Arik Nemtsov
8a4d32f30d mac80211: add TDLS channel-switch Rx flow
When receiving a TDLS channel switch request or response, parse the frame
and call a new tdls_recv_channel_switch op in the low level driver with
the parsed data.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:26 +01:00
Johannes Berg
0395442ad2 mac80211: refactor duplicate detection
Put duplicate detection into its own RX handler, and separate
out the conditions a bit to make the code more readable.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-11 17:05:43 +01:00
Johannes Berg
1f7bba79af mac80211: add back support for radiotap vendor namespace data
Radiotap vendor namespace data might still be useful, but we
reverted it because it used too much space in the RX status.
Put it back, but address the space problem by using a single
bit only and putting everything else into the skb->data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-10 10:30:43 +01:00
Rostislav Lisovy
239281f803 mac80211: 802.11p OCB mode support
This patch adds 802.11p OCB (Outside the Context of a BSS) mode
support.

When communicating in OCB mode a mandatory wildcard BSSID
(48 '1' bits) is used.

The EDCA parameters handling function was changed to support
802.11p specific values.

The insertion of a newly discovered STAs is done in the similar way
as in the IBSS mode -- through the deferred insertion.

The OCB mode uses a periodic 'housekeeping task' for expiration of
disconnected STAs (in the similar manner as in the MESH mode).

New Kconfig option for verbose OCB debugging outputs is added.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-04 13:18:21 +01:00
Johannes Berg
b8fff407a1 mac80211: fix use-after-free in defragmentation
Upon receiving the last fragment, all but the first fragment
are freed, but the multicast check for statistics at the end
of the function refers to the current skb (the last fragment)
causing a use-after-free bug.

Since multicast frames cannot be fragmented and we check for
this early in the function, just modify that check to also
do the accounting to fix the issue.

Cc: stable@vger.kernel.org
Reported-by: Yosef Khyal <yosefx.khyal@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-03 14:28:50 +01:00
Johannes Berg
d98ad83ee8 mac80211: add Intel Mobile Communications copyright
Our legal structure changed at some point (see wikipedia), but
we forgot to immediately switch over to the new copyright
notice.

For files that we have modified in the time since the change,
add the proper copyright notice now.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-09-05 13:52:06 +02:00
Michal Kazior
4549cf2b18 mac80211: fix offloaded BA session traffic after hw restart
When starting an offloaded BA session it is
unknown what starting sequence number should be
used. Using last_seq worked in most cases except
after hw restart.

When hw restart is requested last_seq is
(rightfully so) kept unmodified. This ended up
with BA sessions being restarted with an aribtrary
BA window values resulting in dropped frames until
sequence numbers caught up.

Instead of last_seq pick seqno of a first Rxed
frame of a given BA session.

This fixes stalled traffic after hw restart with
offloaded BA sessions (currently only ath10k).

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-09-03 13:40:38 +02:00
Vladimir Kondratiev
970fdfa89b cfg80211: remove @gfp parameter from cfg80211_rx_mgmt()
In the cfg80211_rx_mgmt(), parameter @gfp was used for the memory allocation.
But, memory get allocated under spin_lock_bh(), this implies atomic context.
So, one can't use GFP_KERNEL, only variants with no __GFP_WAIT. Actually, in all
occurrences GFP_ATOMIC is used (wil6210 use GFP_KERNEL by mistake),
and it should be this way or warning triggered in the memory allocation code.

Remove @gfp parameter as no actual choice exist, and use hard coded
GFP_ATOMIC for memory allocation.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-26 11:15:58 +02:00
Michal Kazior
83eb935ec7 mac80211: fix Rx reordering with RX_FLAG_AMSDU_MORE
Some drivers (e.g. ath10k) report A-MSDU subframes
individually with identical seqno. The A-MPDU Rx
reorder code did not account for that which made
it practically unusable with drivers using
RX_FLAG_AMSDU_MORE because it would end up
dropping a lot of frames resulting in confusion in
upper network transport layers.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-07-21 16:17:26 +02:00
Arik Nemtsov
db8e173245 mac80211: ignore frames between TDLS peers when operating as AP
If the AP receives actions frames destined for other peers, it may
mistakenly toggle BA-sessions from itself to a peer.
Ignore TDLS data packets as well - the AP should not handle them.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-07-21 12:14:05 +02:00
Johannes Berg
5ac2e35030 mac80211: fix station/driver powersave race
It is currently possible to have a race due to the station PS
unblock work like this:
 * station goes to sleep with frames buffered in the driver
 * driver blocks wakeup
 * station wakes up again
 * driver flushes/returns frames, and unblocks, which schedules
   the unblock work
 * unblock work starts to run, and checks that the station is
   awake (i.e. that the WLAN_STA_PS_STA flag isn't set)
 * we process a received frame with PM=1, setting the flag again
 * ieee80211_sta_ps_deliver_wakeup() runs, delivering all frames
   to the driver, and then clearing the WLAN_STA_PS_DRIVER and
   WLAN_STA_PS_STA flags

In this scenario, mac80211 will think that the station is awake,
while it really is asleep, and any TX'ed frames should be filtered
by the device (it will know that the station is sleeping) but then
passed to mac80211 again, which will not buffer it either as it
thinks the station is awake, and eventually the packets will be
dropped.

Fix this by moving the clearing of the flags to exactly where we
learn about the situation. This creates a problem of reordering,
so introduce another flag indicating that delivery is being done,
this new flag also queues frames and is cleared only while the
spinlock is held (which the queuing code also holds) so that any
concurrent delivery/TX is handled correctly.

Reported-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23 11:05:25 +02:00
David S. Miller
5f013c9bc7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/altera/altera_sgdma.c
	net/netlink/af_netlink.c
	net/sched/cls_api.c
	net/sched/sch_api.c

The netlink conflict dealt with moving to netlink_capable() and
netlink_ns_capable() in the 'net' tree vs. supporting 'tc' operations
in non-init namespaces.  These were simple transformations from
netlink_capable to netlink_ns_capable.

The Altera driver conflict was simply code removal overlapping some
void pointer cast cleanups in net-next.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-12 13:19:14 -04:00
Henning Rogge
f4ebddf9ab mac80211: Fix mac80211 station info rx bitrate for IBSS mode
Filter out incoming multicast packages before applying their bitrate
to the rx bitrate station info field to prevent them from setting the
rx bitrate to the basic multicast rate.

Signed-off-by: Henning Rogge <hrogge@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-05 14:52:03 +02:00
Zhao, Gang
6b59db7d4c mac80211: return bool instead of numbers in yes/no function
And some code style changes in the function, and correct a typo in
comment.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:30:28 +02:00
John W. Linville
7eb2450a51 Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-03-20 11:53:20 -04:00
Emmanuel Grumbach
fb378c231d mac80211: set beamforming bit in radiotap
Add a bit in rx_status.vht_flags to let the low level driver
notify mac80211 about a beamformed packet. Propagate this
to the radiotap header.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-03-19 21:29:57 +01:00
John W. Linville
f3b6a488a6 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
	drivers/net/wireless/ath/ath9k/recv.c
	drivers/net/wireless/mwifiex/pcie.c
2014-03-04 13:05:12 -05:00
Chun-Yeow Yeoh
b8ff416bc9 mac80211: add missing update on rx status VHT flag
Add missing update on the rx status vht flag of the last
data packet. Otherwise, cfg80211_calculate_bitrate_vht
may not consider the channel width resulting in wrong
calculation of the received bitrate.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-03-03 15:07:33 +01:00
Johannes Berg
e3685e03b4 mac80211: fix station wakeup powersave race
Consider the following (relatively unlikely) scenario:
 1) station goes to sleep while frames are buffered in driver
 2) driver blocks wakeup (until no more frames are buffered)
 3) station wakes up again
 4) driver unblocks wakeup

In this case, the current mac80211 code will do the following:
 1) WLAN_STA_PS_STA set
 2) WLAN_STA_PS_DRIVER set
 3) - nothing -
 4) WLAN_STA_PS_DRIVER cleared

As a result, no frames will be delivered to the client, even
though it is awake, until it sends another frame to us that
triggers ieee80211_sta_ps_deliver_wakeup() in sta_ps_end().

Since we now take the PS spinlock, we can fix this while at
the same time removing the complexity with the pending skb
queue function. This was broken since my commit 50a9432dae
("mac80211: fix powersaving clients races") due to removing
the clearing of WLAN_STA_PS_STA in the RX path.

While at it, fix a cleanup path issue when a station is
removed while the driver is still blocking its wakeup.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-20 11:54:09 +01:00