Commit Graph

1590 Commits

Author SHA1 Message Date
Jiri Pirko df8a39defa net: rename vlan_tx_* helpers since "tx" is misleading there
The same macros are used for rx as well. So rename it.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-13 17:51:08 -05:00
Jiri Kosina 831a39c241 Revert "cfg80211: make WEXT compatibility unselectable"
This reverts commit 24a0aa212e.

It's causing severe userspace breakage.  Namely, all the utilities from
wireless-utils which are relying on CONFIG_WEXT (which means tools like
'iwconfig', 'iwlist', etc) are not working anymore.  There is a 'iw'
utility in newer wireless-tools, which is supposed to be a replacement
for all the "deprecated" binaries, but it's far away from being
massively adopted.

Please see [1] for example of the userspace breakage this is causing.

In addition to that, Larry Finger reports [2] that this patch is also
causing ipw2200 driver being impossible to build.

To me this clearly shows that CONFIG_WEXT is far, far away from being
"deprecated enough" to be removed.

[1] http://thread.gmane.org/gmane.linux.kernel/1857010
[2] http://thread.gmane.org/gmane.linux.network/343688

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-30 16:42:29 -08:00
Arik Nemtsov 185076d6db cfg80211: correctly check ad-hoc channels
Ad-hoc requires beaconing for regulatory purposes. Validate that the
channel is valid for beaconing, and not only enabled.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 13:40:38 +01:00
Emmanuel Grumbach 70dcec5a48 cfg80211: don't WARN about two consecutive Country IE hint
This can happen and there is no point in added more
detection code lower in the stack. Catching these in one
single point (cfg80211) is enough. Stop WARNING about this
case.

This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=89001

Cc: stable@vger.kernel.org
Fixes: 2f1c6c572d ("cfg80211: process non country IE conflicting first")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 13:29:02 +01:00
Luciano Coelho f89f46cf3a nl80211: check matches array length before acessing it
If the userspace passes a malformed sched scan request (or a net
detect wowlan configuration) by adding a NL80211_ATTR_SCHED_SCAN_MATCH
attribute without any nested matchsets, a NULL pointer dereference
will occur.  Fix this by checking that we do have matchsets in our
array before trying to access it.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000024
IP: [<ffffffffa002fd69>] nl80211_parse_sched_scan.part.67+0x6e9/0x900 [cfg80211]
PGD 865c067 PUD 865b067 PMD 0
Oops: 0002 [#1] SMP
Modules linked in: iwlmvm(O) iwlwifi(O) mac80211(O) cfg80211(O) compat(O) [last unloaded: compat]
CPU: 2 PID: 2442 Comm: iw Tainted: G           O   3.17.2 #31
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
task: ffff880013800790 ti: ffff880008d80000 task.ti: ffff880008d80000
RIP: 0010:[<ffffffffa002fd69>]  [<ffffffffa002fd69>] nl80211_parse_sched_scan.part.67+0x6e9/0x900 [cfg80211]
RSP: 0018:ffff880008d838d0  EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000143c RSI: 0000000000000000 RDI: ffff880008ee8dd0
RBP: ffff880008d83948 R08: 0000000000000002 R09: 0000000000000019
R10: ffff88001d1b3c40 R11: 0000000000000002 R12: ffff880019e85e00
R13: 00000000fffffed4 R14: ffff880009757800 R15: 0000000000001388
FS:  00007fa3b6d13700(0000) GS:ffff88003e200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000024 CR3: 0000000008670000 CR4: 00000000000006e0
Stack:
 ffff880009757800 ffff880000000001 0000000000000000 ffff880008ee84e0
 0000000000000000 ffff880009757800 00000000fffffed4 ffff880008d83948
 ffffffff814689c9 ffff880009757800 ffff880008ee8000 0000000000000000
Call Trace:
 [<ffffffff814689c9>] ? nla_parse+0xb9/0x120
 [<ffffffffa00306de>] nl80211_set_wowlan+0x75e/0x960 [cfg80211]
 [<ffffffff810bf3d5>] ? mark_held_locks+0x75/0xa0
 [<ffffffff8161a77b>] genl_family_rcv_msg+0x18b/0x360
 [<ffffffff810bf66d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff8161a9d4>] genl_rcv_msg+0x84/0xc0
 [<ffffffff8161a950>] ? genl_family_rcv_msg+0x360/0x360
 [<ffffffff81618e79>] netlink_rcv_skb+0xa9/0xd0
 [<ffffffff81619458>] genl_rcv+0x28/0x40
 [<ffffffff816184a5>] netlink_unicast+0x105/0x180
 [<ffffffff8161886f>] netlink_sendmsg+0x34f/0x7a0
 [<ffffffff8105a097>] ? kvm_clock_read+0x27/0x40
 [<ffffffff815c644d>] sock_sendmsg+0x8d/0xc0
 [<ffffffff811a75c9>] ? might_fault+0xb9/0xc0
 [<ffffffff811a756e>] ? might_fault+0x5e/0xc0
 [<ffffffff815d5d26>] ? verify_iovec+0x56/0xe0
 [<ffffffff815c73e0>] ___sys_sendmsg+0x3d0/0x3e0
 [<ffffffff810a7be8>] ? sched_clock_cpu+0x98/0xd0
 [<ffffffff810611b4>] ? __do_page_fault+0x254/0x580
 [<ffffffff810bb39f>] ? up_read+0x1f/0x40
 [<ffffffff810611b4>] ? __do_page_fault+0x254/0x580
 [<ffffffff812146ed>] ? __fget_light+0x13d/0x160
 [<ffffffff815c7b02>] __sys_sendmsg+0x42/0x80
 [<ffffffff815c7b52>] SyS_sendmsg+0x12/0x20
 [<ffffffff81751f69>] system_call_fastpath+0x16/0x1b

Fixes: ea73cbce4e ("nl80211: fix scheduled scan RSSI matchset attribute confusion")
Cc: stable@vger.kernel.org [3.15+]
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 12:33:25 +01:00
Arik Nemtsov 34f05f543f cfg80211: avoid mem leak on driver hint set
In the already-set and intersect case of a driver-hint, the previous
wiphy regdomain was not freed before being reset with a copy of the
cfg80211 regdomain.

Cc: stable@vger.kernel.org
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 12:25:33 +01:00
Jouni Malinen 08f6f14777 cfg80211: Fix 160 MHz channels with 80+80 and 160 MHz drivers
The VHT supported channel width field is a two bit integer, not a
bitfield. cfg80211_chandef_usable() was interpreting it incorrectly and
ended up rejecting 160 MHz channel width if the driver indicated support
for both 160 and 80+80 MHz channels.

Cc: stable@vger.kernel.org (3.16+)
Fixes: 3d9d1d6656 ("nl80211/cfg80211: support VHT channel configuration")
       (however, no real drivers had 160 MHz support it until 3.16)
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 12:18:47 +01:00
Johannes Berg ea372c5452 cfg80211: remove unneeded initialisations in nl80211_set_reg
Some variables are assigned unconditionally, remove their
initialisations to help avoid introducing errors later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 14:54:31 +01:00
Arik Nemtsov ad932f046f cfg80211: leave invalid channels on regdomain change
When the regulatory settings change, some channels might become invalid.
Disconnect interfaces acting on these channels, after giving userspace
code a grace period to leave them.

This mode is currently opt-in, and not all interface operating modes are
supported for regulatory-enforcement checks. A wiphy that wishes to use
the new enforcement code must specify an appropriate regulatory flag,
and all its supported interface modes must be supported by the checking
code.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@suse.com>
[fix some indentation, typos]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 14:33:41 +01:00
Johannes Berg 24a0aa212e cfg80211: make WEXT compatibility unselectable
This option has been marked for deprecation and removal for
a little more than two years, but it's not been very clearly
signalled since it was always possible to just select it.

Make it unselectable now to signal anyone who's still using
it after all this time more clearly. They can still get it
back, but only by patching the kernel.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 12:21:34 +01:00
Johannes Berg 601555cd75 nl80211: don't crash sending invalid chandef
One of the cases for an invalid channel definition is that
the channel pointer is NULL, in which case the warning is
a bit late since we'll dereference the pointer. Bail out
of the function upon warning about this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-27 17:27:52 +01:00
Johannes Berg 98f0334263 cfg80211: clean up beacon loss CQM event
Having it as a sub-event for RSSI thresholds is very ugly,
but luckily no userspace actually uses the events yet.

Move the event to its own function call internally and to
its own event attribute in nl80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-26 20:56:42 +01:00
Johannes Berg 5b97f49d65 cfg80211: refactor the various CQM event sending code
Much of the code can be shared by moving it into helper functions
for the CQM event sending.

Also move the code closer together, even in the header file.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-26 12:47:38 +01:00
Johannes Berg ea9eba6a8b cfg80211: remove pointless channel lookup in survey code
We have a channel pointer, and we use its center frequency
to look up a channel pointer - which will thus be exactly
the same as the original pointer.

Remove that pointless lookup and just use the pointer.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-25 09:57:27 +01:00
Tomasz Bursztyka 8f894be2df nl80211: Broadcast CMD_NEW_INTERFACE and CMD_DEL_INTERFACE
Let the other listeners being notified when a new or del interface
command has been issued, thus reducing later necessary request to be in
sync with current context.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 19:02:42 +01:00
Jukka Rissanen 18e5ca65e5 nl80211: Replace interface socket owner attribute with more generic one
Replace NL80211_ATTR_IFACE_SOCKET_OWNER attribute with more generic
NL80211_ATTR_SOCKET_OWNER that can be used with other commands
that interface creation.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:54:40 +01:00
Rafał Miłecki d687cbb703 cfg80211: protect fools returning NULL in add_virtual_intf
Callback add_virtual_intf is supposed to return ERR_PTR and trying to
return NULL results in some "Unable to handle kernel paging request",
etc. As it may be complicated to debug & trace, let's catch it (WARN).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:50:34 +01:00
Arik Nemtsov c7ab508190 cfg80211: explicitly initialize some fields in custom reg path
Explicitly initialize the DFS state and beacon found state when handling
channels in the custom regulatory path.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:49:33 +01:00
Arik Nemtsov 2e18b38fc8 cfg80211: update missing fields in custom regulatory path
Some channels fields were not being updated in the custom regulatory
path. Update them according to the code in handle_channel().

Signed-off-by: Jonathan Doron <jonathanx.doron@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:49:33 +01:00
Johannes Berg ad2b26abc1 cfg80211: allow drivers to support random MAC addresses for scan
Add the necessary feature flags and a scan flag to support using
random MAC addresses for scan while unassociated.

The configuration for this supports an arbitrary MAC address
value and mask, so that any kind of configuration (e.g. fixed
OUI or full 46-bit random) can be requested. Full 46-bit random
is the default when no other configuration is passed.

Also add a small helper function to use the addr/mask correctly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:52 +01:00
Luciano Coelho 8cd4d4563e cfg80211: add wowlan net-detect support
Add a new WoWLAN API to enable net-detect as a wake up trigger.
Net-detect allows the device to scan in the background while the
host is asleep to wake up the host system when a matching network
is found.

Reuse the scheduled scan attributes to specify how the scan is
performed while suspended and the matches that will trigger a
wake event.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:45 +01:00
Luciano Coelho 256da02d18 cfg80211: refactor nl80211_start_sched_scan so it can be reused
For net detect, we will need to reuse most of the scheduled scan
parsing function, but not all, so split out the attributes parsing
part out of the main start sched_scan function.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:42 +01:00
Arik Nemtsov 1057d35ede cfg80211: introduce TDLS channel switch commands
Introduce commands to initiate and cancel TDLS channel-switching. Once
TDLS channel-switching is started, the lower level driver is responsible
for continually initiating channel-switch operations and returning to
the base (AP) channel to listen for beacons from time to time.

Upon cancellation of the channel-switch all communication between the
relevant TDLS peers will continue on the base channel.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:12 +01:00
Johannes Berg 760a52e80f Merge remote-tracking branch 'wireless-next/master' into mac80211-next
This brings in some mwifiex changes that further patches will
need to work on top to not cause merge conflicts.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-18 09:32:44 +01:00
Arik Nemtsov a6d4a534e1 cfg80211: introduce regulatory flags controlling bw
Allow setting bandwidth related regulatory flags. These flags are mapped
to the corresponding channel flags in the specified range.
Make sure the new flags are consulted when calculating the maximum
bandwidth allowed by a regulatory-rule.

Also allow propagating the GO_CONCURRENT modifier from a reg-rule to a
channel.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-10 10:36:21 +01:00