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Commit Graph

23602 Commits

Author SHA1 Message Date
Michal Kazior
2e165b8184 cfg80211/mac80211: remove .get_channel
We do not need it anymore since cfg80211 tracks
monitor channel and monitor channel type.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:18 +02:00
Michal Kazior
a69b40a95b cfg80211: set initial monitor channel
Implements behaviour seen in mac80211. A running
monitor always has a channel - even before
.set_channel. This way we won't break current
behaviour.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:18 +02:00
Michal Kazior
b78e8ceac2 cfg80211: track monitor channel
Make it even more obvious we support single
monitor channel. This will allow us to remove
.get_channel.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:17 +02:00
Michal Kazior
4f03c1ed89 cfg80211: refuse to .set_monitor_channel when non-monitors are present
Having .set_monitor_channel work with non-monitor
interfaces running would make interface
combinations accounting ambiguous.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:17 +02:00
Michal Kazior
870d37fc22 mac80211: refactor virtual monitor code
Use cfg80211 the new .set_monitor_enabled instead
of tracking it inside mac80211.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:16 +02:00
Michal Kazior
dbbae26afa cfg80211: track monitor interfaces count
Implements .set_monitor_enabled(wiphy, enabled).

Notifies driver upon change of interface layout.

If only monitor interfaces become present it is
called with 2nd argument being true. If
non-monitor interface appears then 2nd argument
is false. Driver is notified only upon change.

This makes it more obvious about the fact that
cfg80211 supports single monitor channel. Once we
implement multi-channel we don't want to allow
setting monitor channel while other interface
types are running. Otherwise it would be ambiguous
once we start considering num_different_channels.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:16 +02:00
Michal Kazior
26ab9a0c58 cfg80211: introduce cfg80211_get_chan_state
Helper function for finding out which channel is
used by a given interface.

An exclusive channel can be used only by a single
interface. This is mainly for non-fixed channel
IBSS handling.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:16 +02:00
Michal Kazior
c30a3d3868 cfg80211: track ibss fixed channel
IBSS may hop between channels. It is necessary to
account this special case when considering
interface combinations.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:15 +02:00
Michal Kazior
f4489ebeff cfg80211: add channel tracking for AP and mesh
We need to know which channel is used by a running
AP and mesh for channel context accounting and
finding matching/active interface combination.

STA/IBSS have current_bss already which allows us
to check which channel a vif is tuned to.
Non-fixed channel IBSS can be handled with
additional changes.

Monitor mode is going to be handled differently.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:15 +02:00
Michal Kazior
ac800140c2 cfg80211: .stop_ap when interface is going down
We'll need this for proper channel tracking (which
is going to be needed for channel context
accounting and finding matching/active interface
combination).

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:15 +02:00
Michal Kazior
60771780c2 cfg80211: introduce cfg80211_stop_ap
This functionality will be reused when interface
is going down. Avoids code duplication. Also adds
missing wdev locking.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-29 13:39:14 +02:00
Johannes Berg
b1fbd46976 Merge remote-tracking branch 'wireless-next/master' into mac80211-next 2012-06-28 13:45:58 +02:00
Mahesh Palivela
bf0c111ec8 cfg80211: allow advertising VHT capabilities
Allow drivers to advertise their VHT capabilities
and export them to userspace via nl80211.

Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-28 13:08:34 +02:00
Eliad Peller
c9b22fb87a mac80211: don't require associated->beacon_ies for ps
beacon_ies is needed only in order to extract the dtim
period. However, even if it's missing we can still enter
ps with dtim=1 (which also happens if the TIM ie is invalid).

Most drivers don't use conf.max_sleep_period/ps_dtim_period
anyway, and this check prevents them from entering ps if
they don't have beacon (but only probe response), even though
the beacon is not needed at all.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-28 11:40:02 +02:00
Eliad Peller
f823981e28 mac80211: flush queues before deauth/disassoc
On deauth/disassoc we tear down all BA sessions. These
DELBA packets are sent on the appropriate TID, while
deauth/disassoc is always sent on VO. This sometimes
ends with the DELBA being sent after the deauth was
already sent.

Fix it by flushing all the pending frames before
sending deauth/disassoc.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-28 11:36:14 +02:00
Johannes Berg
fc8a7321d3 mac80211: don't expose ieee80211_add_srates_ie()
This and ieee80211_add_ext_srates_ie() aren't
exported, so can't be used by drivers anyway,
but there's also no reason that they should be
so make them private to mac80211 and use sdata
instead of vif arguments.

Acked-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-28 10:35:50 +02:00
Johannes Berg
dfb89c56ad cfg80211: don't allow WoWLAN support without CONFIG_PM
When CONFIG_PM is disabled, no device can possibly
support WoWLAN since it can't go to sleep to start
with. Due to this, mac80211 had even rejected the
hardware registration. By making all the code and
data for WoWLAN depend on CONFIG_PM we can promote
this runtime error to a compile-time error.

Add #ifdef around all WoWLAN code to remove it in
systems that don't need it as they never suspend.

Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-27 17:55:11 +02:00
John W. Linville
2c443443e7 Merge branch 'for-john' of git://git.sipsolutions.net/mac80211-next 2012-06-26 14:27:34 -04:00
Johannes Berg
cc45ae547b mac80211: make __ieee80211_recalc_idle static
Since it's not called from any file outside where
it's defined, the function can be static if moved
up in the file before the callers.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-26 12:04:05 +02:00
Johannes Berg
371a255e86 mac80211: make ieee80211_check_concurrent_iface netdev-independent
ieee80211_check_concurrent_iface() need not use the
netdev. Remove the use of the netdev here to prepare
the function for P2P device addition.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-26 09:37:25 +02:00
Johannes Berg
171243612f mac80211: remove unused function
Remove the unused function is_ieee80211_device().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-26 09:35:49 +02:00
Thomas Pedersen
88e920b450 nl80211: specify RSSI threshold in scheduled scan
Support configuring an RSSI threshold in dBm (s32) when requesting
scheduled scan, below which a BSS won't be reported by the cfg80211
driver.

Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-26 09:32:28 +02:00
Johannes Berg
3fae027316 mac80211: trace debug messages
It can be very useful to have all debug messages
available when debugging, but hard to correlate
between different sources, so add a trace event
for all mac80211 debug messages.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-24 11:33:18 +02:00
Johannes Berg
011ad0e9f8 mac80211: rename driver-trace file
This file will contain more soon, so
rename it to just trace.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-24 11:32:38 +02:00
Johannes Berg
bdcbd8e0e3 mac80211: clean up debugging
There are a few things that make the logging and
debugging in mac80211 less useful than it should
be right now:
 * a lot of messages should be pr_info, not pr_debug
 * wholesale use of pr_debug makes it require *both*
   Kconfig and dynamic configuration
 * there are still a lot of ifdefs
 * the style is very inconsistent, sometimes the
   sdata->name is printed in front

Clean up everything, introducing new macros and
separating out the station MLME debugging into
a new Kconfig symbol.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-24 11:32:29 +02:00
John W. Linville
133189a46c Merge branch 'for-john' of git://git.sipsolutions.net/mac80211-next 2012-06-22 14:39:53 -04:00
Johannes Berg
d3b2fb53c7 mac80211: pass sdata to some RX functions
For better debugging, we would like to have
the sdata pointer available later, so pass
it into these functions.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-22 12:53:06 +02:00
Johannes Berg
08ce5abe3d mac80211: two small verbose debug cleanups
Two instances of CONFIG_MAC80211_VERBOSE_DEBUG
should be different, fix them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-22 12:53:05 +02:00
Johannes Berg
17efdc4ab8 mac80211: remove TKIP debug
The TKIP code hasn't been changed in a very long
time, so it seems unlikely that anyone really has
a need for the TKIP debug code. Remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-22 11:26:58 +02:00
Victor Goldenshtein
66572cfc30 mac80211: add command to get current rssi
Get current rssi (in dBm) from the driver/FW.

Instead of reporting the signal received in the last
rx packet, which might be inaccurate if rx traffic is
low and beacon filtering is enabled, get the signal
from the driver/FW.

Signed-off-by: Victor Goldenshtein <victorg@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-21 16:42:17 +02:00
Johannes Berg
0f6b3f597d mac80211: fix double-start of remain-on-channel
When a remain-on-channel item is deleted, we remove it
from the list and then start the next item. However,
if it wasn't actually the first item then calling
ieee80211_start_next_roc() is wrong as it will start
the first item -- even if that was already started.

Fix the two places that do this and add a warning to
prevent the problem from reoccurring.

Reported-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 20:12:12 +02:00
Will Hawkins
3bfda62c50 mac80211: Allow userspace to register for auth frames in IBSS
Set the necessary flags to allow user space applications
to register for authentication frames on IBSS interfaces.
This is useful for situations where userspace applications
want to control key negotiation between stations.

Signed-off-by: Will Hawkins <hawkinsw@opentechinstitute.org>
[reword commit message a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 20:03:43 +02:00
Will Hawkins
452a6d2261 mac80211: send auth in IBSS only if userspace isn't handling it
Check the auth frame registration count before sending
"open system" authentication messages when a new station
registers on a particular IBSS network. This stops us
from sending out multiple authentication messages with
different authentication algorithms.

Signed-off-by: Will Hawkins <hawkinsw@opentechinstitute.org>
[reword commit message a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 20:03:42 +02:00
Will Hawkins
6abe056322 mac80211: Track auth frame registrations on IBSS ifaces
Track userspace registrations for authentication
frames received on an IBSS interface. This field
will be used to decide whether or not to send
"open system" authentication frames when a new
station joins an adhoc network.

Signed-off-by: Will Hawkins <hawkinsw@opentechinstitute.org>
[redesign the code flow a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 20:03:41 +02:00
Eyal Shapira
9ea4fa158f mac80211: fix cleanup if driver suspend callback fails
In case the driver suspend callback fails, mac80211 is left
with stopped queues which prevents any further traffic as well
as all STAs are left marked with WLAN_STA_BLOCK_BA which will
cause any further ADDBA requests to be declined. Fix it by
undoing both before returning from __iee80211_suspend.

Reported-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 17:39:51 +02:00
Yoni Divinsky
00e96decfd mac80211: save wmm_acm per sdata
Save and configure the wmm_acm per sdata, rather than
per hardware.

If wmm_acm is saved per hardware when running two
interfaces simultaneously on the same hardware one
interface's wmm policy will be affected by the other
interface.

Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 17:35:22 +02:00
Luciano Coelho
50ae34a254 mac80211: use the correct capability info in ieee80211_set_associated()
If an AP is beaconing with different capabilities than the one we get
in the associate response, we were still using the capabilities
received in the beacons.  One example is when the AP is beaconing with
the short slot bit set to zero and then we try to connect to it with
long slot.  In this case, we would keep using long slot until the next
beacon was received.

Fix this by using the correct capability value when calling
ieee80211_handle_bss_capability().  We were using cbss->capability,
but we should use the bss_conf->assoc_capability instead.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 17:32:10 +02:00
Felix Fietkau
46c1dd0c7f cfg80211: fix regression in multi-vif AP start
Commit "cfg80211: provide channel to start_ap function" assumes that the
channel is always passed to the NL80211_CMD_START_AP command, however
in case of multi-BSSID, hostapd only passes the channel for the first vif.
This makes starting beaconing on secondary vifs fail with -EINVAL.

Fix this by storing the channel provided to .start_ap in wdev->preset_chan
and picking the first AP vif's channel for secondary vifs if not provided.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 11:10:43 +02:00
Johannes Berg
2bd7e35da0 nl80211: use __cfg80211_rdev_from_attrs for testmode
To fix the testmode cross-namespace access problem,
use __cfg80211_rdev_from_attrs() to get the device
instead of open-coding similar functionality.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:57:03 +02:00
Johannes Berg
878d9ec736 nl80211: change __cfg80211_rdev_from_info
Change the function to __cfg80211_rdev_from_attrs
to take attributes instead of the info struct to
make it usable from dump callbacks for testmode.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:57:02 +02:00
Johannes Berg
4f7eff10b2 nl80211: fix netns separation
There are currently a few ways to "escape"
the network namespace and access a wiphy
that belongs to another namespace. Add a
netns argument to the relevant functions
to fix this.

One remaining issue with testmode will be
fixed in a follow-up patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:57:01 +02:00
Johannes Berg
7fee4778bf nl80211: refactor __cfg80211_rdev_from_info
Refactor the function to make it easier to
extend.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:57:00 +02:00
Johannes Berg
a9455408b0 cfg80211: make some functions static
Some of the functions to retrieve a device can
be static as they're used only in nl80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:56:59 +02:00
Luciano Coelho
6df653c71e mac80211: initialize sta pointer to avoid false-positive warning
Some compilers (eg. gcc 4.4.1 for ARM) report a false positive warning
in mlme.c:

net/mac80211/mlme.c: In function 'ieee80211_prep_connection':
net/mac80211/mlme.c:3035: warning: 'sta' may be used uninitialized in this function

This is a false positive because the place where 'sta' is used is
inside an if with the same condition of where it is set:

[...]
        if (!have_sta) {
                sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
                if (!sta)
                        return -ENOMEM;
        }
[...]
        if (!have_sta) {
[...]
                sta->sta.supp_rates[cbss->channel->band] = rates;
[...]

For some reason the compiler doesn't understand this and warns.

While this is not a problem in the code itself, we can avoid polluting
the build logs with false positives by setting sta to NULL on
declaration and checking for sta instead of !have_sta in the second if.

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:54:23 +02:00
Rajkumar Manoharan
559cef996d mac80211: cleanup offchannel_ps_enable argument
The 'tell_ap' argument is always true. So that remove it
and simplify the function.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-20 10:53:34 +02:00
Chun-Yeow Yeoh
7ebfa46973 mac80211: fix and improve mesh RANN processing
This patch fixes the problem of dropping RANN element if the TTL
is 1. If the received RANN element TTL is 1 or greater than 1, the
RANN is processed. However, forwarding of received RANN element
with TTL 1 or less is prohibited according to the standard. This
is previously reported by Monthadar Al Jaberi.

Besides, this patch also avoid the processing of unicast PREQ
generation if the RANN element does not meet the acceptance
criteria mentioned in Sec. 13.10.12.4.2 of IEEE Std. 802.11-2012.

Reported-by: Monthadar Al Jaberi <monthadar@gmail.com>
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-18 19:18:55 +02:00
Arik Nemtsov
d6a4ed6fe0 mac80211: set only VO as a U-APSD enabled AC
Some APs experience problems when working with U-APSD. Decrease the
probability of that happening by using legacy mode for all ACs but VO.

The AP that caused us troubles was a Cisco 4410N. It ignores our
setting, and always treats non-VO ACs as legacy.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-18 19:18:54 +02:00
Arik Nemtsov
04800ada2a mac80211: stop Rx during HW reconfig
While HW reconfig is in progress, drop all incoming Rx. This prevents
incoming packets from changing the internal state of the driver or
calling callbacks of the low level driver while it is in inconsistent
state.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-18 19:18:53 +02:00
Chun-Yeow Yeoh
58886a9011 mac80211: fix the assignment of mesh element TTL
This patch fixes the wrong assignment of mesh element TTL.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-18 13:55:16 +02:00
Chun-Yeow Yeoh
728b19e5fb {nl,cfg,mac}80211: implement dot11MeshHWMPconfirmationInterval
As defined in section 13.10.9.3 Case D (802.11-2012), this
control variable is used to limit the mesh STA to send only
one PREQ to a root mesh STA within this interval of time
(in TUs). The default value for this variable is set to
2000 TUs. However, for current implementation, the maximum
configurable of dot11MeshHWMPconfirmationInterval is
restricted by dot11MeshHWMPactivePathTimeout.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
[line-break commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-06-18 13:55:15 +02:00