Граф коммитов

34928 Коммитов

Автор SHA1 Сообщение Дата
Felix Fietkau 63558a650a mac80211: minstrel_ht: switch to .tx_status_noskb
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 15:01:50 +01:00
Felix Fietkau fb7acfb8e1 mac80211: minstrel: switch to .tx_status_noskb
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 15:01:50 +01:00
Felix Fietkau f684565e0a mac80211: add tx_status_noskb to rate_control_ops
This op works like .tx_status, except it does not need access to the
skb. This will be used by drivers that cannot match tx status
information to specific packets.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 15:01:50 +01:00
Felix Fietkau 95943425c0 mac80211: minstrel_ht: move aggregation check to .get_rate()
Preparation for adding a no-skb tx status path

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 15:01:50 +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
Felix Fietkau 336004e291 mac80211: add more missing checks for VHT tx rates
Fixes a crash on attempting to calculate the frame duration for a VHT
packet (which needs to be handled by hw/driver instead).

Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-28 14:24:23 +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
Felix Fietkau 2967e031d4 mac80211: copy chandef from AP vif to VLANs
Instead of keeping track of all those special cases where
VLAN interfaces have no bss_conf.chandef, just make sure
they have the same as the AP interface they belong to.

Among others, this fixes a crash getting a VLAN's channel
from userspace since a NULL channel is returned as a good
result (return value 0) for VLANs since the commit below.

Cc: stable@vger.kernel.org [3.18 only]
Fixes: c12bc4885f ("mac80211: return the vif's chandef in ieee80211_cfg_get_channel()")
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[rewrite commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-27 17:36:47 +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 40a11ca83d mac80211: check if channels allow 80 MHz for VHT probe requests
If there are no channels allowing 80 MHz to be used, then the
station isn't really VHT capable even if the driver and device
support it in general. In this case, exclude the VHT capability
IE from probe request frames.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-25 11:05:33 +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
Johannes Berg 575f05302e mac80211: disable 80+80/160 in VHT correctly
The supported bandwidth field is a two-bit field, not a bitmap,
so treat it accordingly when disabling 80+80 or 160 MHz.

Note that we can only advertise "80+80 and 160" or "160", not
"80+80" by itself, so disabling 160 also disables 80+80.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-24 16:55:28 +01:00
Felix Fietkau 75769c80e3 mac80211: minstrel_ht: add a small optimization to minstrel_aggr_check
Check the queue mapping earlier, skb->queue_mapping is more likely than
skb->data to still be in d-cache.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 19:31:07 +01:00
Johannes Berg f815e2b3c0 mac80211: notify drivers on sta rate table changes
This allows drivers with a firmware or chip-based rate lookup table to
use the most recent default rate selection without having to get it from
per-packet data or explicit ieee80211_get_tx_rate calls

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 19:15:50 +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
Felix Fietkau 628c010f1f mac80211: skip legacy rate mask handling for VHT rates
The rate mask code currently assumes that a rate is legacy if
IEEE80211_TX_RC_MCS is not set. This might be the cause of bogus VHT
rates being reported with minstrel_ht.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:46:35 +01:00
Eliad Peller 8b1956f041 mac80211: don't allow 40MHz tx rates in case of 20MHz chandef
When 20MHz chandef is used, 40MHz rates shouldn't be
used (by the rate-control algorithm), even if the sta
ht capabilities indicate support for it.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Singed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:46:30 +01:00
Johannes Berg a344d6778a mac80211: allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR
Allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR with software
based scanning and generate a random MAC address for them for every
scan request with the flag.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:46:09 +01:00
Johannes Berg 6ea0a69ca2 mac80211: rcu-ify scan and scheduled scan request pointers
In order to use the scan and scheduled scan request pointers during
RX to check for randomisation, make them accessible using RCU.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:58 +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
Eliad Peller ff5db4392c mac80211: remove redundant check
local->scan_req was tested in the previous line, so it
can't be NULL.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:48 +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
Liad Kaufman b6da911b3c mac80211: synchronously reserve TID per station
In TDLS (e.g., TDLS off-channel) there is a requirement for
some drivers to supply an unused TID between the AP and the
device to the FW, to allow sending PTI requests and to allow
the FW to aggregate on a specific TID for better throughput.

To ensure that the allocated TID is indeed unused, this patch
introduces an API for blocking the driver from TXing on that
TID.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:36 +01:00
Liad Kaufman 4f9610d528 mac80211: add specific-queue flushing support
If the HW supports IEEE80211_HW_QUEUE_CONTROL, allow
flushing only specific queues rather than all of them.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:45:30 +01:00
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
Arik Nemtsov a7a6bdd067 mac80211: introduce TDLS channel switch ops
Implement the cfg80211 TDLS channel switch ops and introduce new mac80211
ones for low-level drivers.
Verify low-level driver support for the new ops when using the relevant
wiphy feature bit. Also verify the peer supports channel switching before
passing the command down.

Add a new STA flag to track the off-channel state with the TDLS peer and
make sure to cancel the channel-switch if the peer STA is unexpectedly
removed.

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 18:45:21 +01:00
Arik Nemtsov 5383758443 mac80211: add parsing of TDLS specific IEs
These are used in TDLS channel switching code.

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 18:45:16 +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
Arik Nemtsov c273390569 mac80211: prepare TDLS mgmt code for channel-switch templates
Split the data-generating from the Tx-sending functionality, as we do
not want to send templates to the lower driver. Also add an optional
chandef argument to the data-generating portion. It will be used for
channel-switch templates.

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 18:45:07 +01:00
Arik Nemtsov 9041c1fa57 mac80211: track AP and peer STA TDLS chan-switch support
The AP or peer can prohibit TDLS channel switch via a bit in the
extended capabilities IE. Parse the IE and track this bit. Set an
appropriate STA flag if both the AP and peer STA support TDLS
channel-switching.

Add the new STA flag and the missing TDLS_INITIATOR to debugfs.

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 18:45:04 +01:00
Arik Nemtsov 78632a17ea cfg/mac80211: define TDLS channel switch feature bit
Define some related TDLS protocol constants and advertise channel switch
support in the extended-capabilities IE when the feature bit is defined.

Actually supporting TDLS channel-switching also requires support for
some new nl80211 commands, to be introduced by future patches.

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 18:44:58 +01:00
Arik Nemtsov 2cedd87960 mac80211: add BSS coex IE to TDLS setup frames
Add the BSS coex IE in case we support HT40 channels, as mandated by
section 8.5.13 in IEEE802.11 2012.

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 18:44:52 +01:00
Arik Nemtsov f0d29cb979 mac80211: add supported channels IE during TDLS setup
This information element is mandatory in case TDLS channel-switching is to
be supported. The channels given are ones supported and allowed to be
active in the current regulatory setting.

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 18:44:47 +01:00
Johannes Berg 7528ec5776 mac80211: add function to create data frame template including key
For some TDLS channel switch implementations data frames need to be
sent by the firmware based on a template. This template should be
created by mac80211, and thus needs to properly be built from an
802.3 frame into an 802.11 frame. In addition, the device will need
the key information so the select_key handler needs to be run.
However, the driver/device will be responsible for all of the crypto
encapsulation, as the sequence numbers etc. cannot be built by the
host anyway in this case since it's a template to be used multiple
times.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:44:43 +01:00
Johannes Berg 4c9451ed94 mac80211: factor out 802.11 header building code
Factor out the 802.11 header building code from the xmit function
to be able to use it separately in a later commit.

While at it, fix up some documentation.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:44:38 +01:00
Johannes Berg 73c4e195e6 mac80211: move skb info band assignment out
Instead of passing the band as a parameter to ieee80211_xmit()
and ieee80211_tx(), move it outside of the two functions while
making sure info->band is set up before calling them.

This removes the parameter and simplifies the follow commit.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:44:35 +01:00
Liad Kaufman 1277b4a9f5 mac80211: retransmit TDLS teardown packet through AP if not ACKed
Since the TDLS peer station might not receive the teardown
packet (e.g., when in PS), this makes sure the packet is
retransmitted - this time through the AP - if the TDLS peer
didn't ACK the packet.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:44:29 +01:00
Liad Kaufman 24d342c514 mac80211: add option for setting skb flags before xmit
Allows setting of an skb's flags - if needed - when calling
ieee80211_subif_start_xmit().

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-11-19 18:44:19 +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
John W. Linville 6164c20228 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2014-11-11 16:30:48 -05:00
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
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