| Commit message (Collapse) | Author | Age | Files | Lines |
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Enhance sched scan to support option of finding a better BSS while in
connected state. Firmware scans the medium and reports when it finds a
known BSS which has better RSSI than the current connected BSS. New
attributes to specify the relative RSSI (compared to the current BSS)
are added to the sched scan to implement this.
Signed-off-by: vamsi krishna <vamsin@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add support to use a random local address (Address 2 = TA in transmit
and the same address in receive functionality) for Public Action frames
in order to improve privacy of WLAN clients. Applications fill the
random transmit address in the frame buffer in the NL80211_CMD_FRAME
command. This can be used only with the drivers that indicate support
for random local address by setting the new
NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA and/or
NL80211_EXT_FEATURE_MGMT_TX_RANDOM_TA_CONNECTED in ext_features.
The driver needs to configure receive behavior to accept frames to the
specified random address during the time the frame exchange is pending
and such frames need to be acknowledged similarly to frames sent to the
local permanent address when this random address functionality is not
used.
Signed-off-by: vamsi krishna <vamsin@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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With 78, 111 and 85 bytes respectively (on x86-64), the
functions iwe_stream_add_event(), iwe_stream_add_point()
and iwe_stream_add_value() really shouldn't be inlines.
It appears that at least my compiler already decided
the same, and created a single instance of each one
of them for each file using it, but that's still a
number of instances in the system overall, which this
reduces.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There may be situations in which the in-kernel originator of an
SKB cares about its wifi transmission status. To have that, set
the wifi_acked[_valid] bits before freeing/orphaning the SKB if
the destructor is set. The originator can then use it in there.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a flag that indicates that the WEP ICV was stripped from an
RX packet, allowing the device to not transfer that if it's
already checked.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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gcc-7 complains that wl3501_cs passes NULL into a function that
then uses the argument as the input for memcpy:
drivers/net/wireless/wl3501_cs.c: In function 'wl3501_get_scan':
include/net/iw_handler.h:559:3: error: argument 2 null where non-null expected [-Werror=nonnull]
memcpy(stream + point_len, extra, iwe->u.data.length);
This works fine here because iwe->u.data.length is guaranteed to be 0
and the memcpy doesn't actually have an effect.
Making the length check explicit avoids the warning and should have
no other effect here.
Also check the pointer itself, since otherwise we get warnings
elsewhere in the code.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There is not a valid reason to attempt setting the monitor channel
while in managed mode. Since this code path only deals with this mode,
remove the code block.
Johannes: I'll note that the comment indicated it was for backward
compatibility, but the code wasn't functional since switching the
monitor channel isn't supported (any more?) when in managed mode, as
that mode owns the channel configuration. Additionally, since monitor
can't be done on a managed mode interface, this would only have had
any effect to start with if a separate monitor interface is present,
in which case it's better to change the channel through that anyway,
if even possible.
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Disconnect or deauthenticate when the owning socket is closed if this
flag is supplied to CMD_CONNECT or CMD_ASSOCIATE. This may be used
to ensure userspace daemon doesn't leave an unmanaged connection behind.
In some situations it would be possible to account for that, to some
degree, in the deamon restart code or in the up/down scripts without
the use of this attribute. But there will be systems where the daemon
can go away for varying periods without a warning due to local resource
management.
Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Ilan reported that sometimes nl80211 messages weren't working if
the frames being transported got very large, which was really a
problem for userspace-to-kernel messages, but prompted me to look
at the code.
Upon review, I found various places where variable-length data is
transported in an nl80211 message but the message isn't allocated
taking that into account. This shouldn't cause any problems since
the frames aren't really that long, apart in one place where two
(possibly very long frames) might not fit.
Fix all the places (that I found) that get variable length data
from the driver and put it into a message to take the length of
the variable data into account. The 100 there is just a safe
constant for the remaining message overhead (it's usually around
50 for most messages.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a new "global" (i.e. not per-rfkill device) LED trigger, rfkill-any,
which may be useful on laptops with a single "radio LED" and multiple
radio transmitters. The trigger is meant to turn a LED on whenever
there is at least one radio transmitter active and turn it off
otherwise.
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This patch adds a helper for reading that new property and applying
limitations of supported channels specified this way.
It is used with devices that normally support a wide wireless band but
in a given config are limited to some part of it (usually due to board
design). For example a dual-band chipset may be able to support one band
only because of used antennas.
It's also common that tri-band routers have separated radios for lower
and higher part of 5 GHz band and it may be impossible to say which is
which without a DT info.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
[add new function to documentation, fix link]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It is needed for another cfg80211 helper that will be out of reg.c so
move it to common util.c file and make it non-static.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This new file should be used for properties that apply to all wireless
devices.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This constant isn't really specific to mac80211, so move it
"up" a level to ieee80211.h
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The supported band structure contains the band is applies to
so no need to pass it separately. Also added a default case
to the switch for completeness. The current code base does not
call this function with NUM_NL80211_BANDS but kept that case
statement although default case would cover that.
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Instead of open-coding dev_name(), use the wiphy_name() inline
to make the code easier to understand. While at it, clean up
some coding style.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It's just an example, but lets make it look more real to don't confuse
people about possible REG_RULE usage. Channels are 20 MHz wide, so start
and end frequencies are 10 MHz away from the center one.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It's maintained by Seth Forshe for a long time now.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Cc: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The code was setting the capabilities byte to zero,
after it was already properly set previously. Fix it.
The bug was found while debugging hwsim mesh tests failures
that happened since the commit mentioned below.
Fixes: 76f43b4c0a93 ("mac80211: Remove invalid flag operations in mesh TSF synchronization")
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This reverts commit 73f4f76a196d7adb11a1e192bd8024fe0bc83910.
As Mike reported, and I should've seen in review, we can't call
the new LED functions, which acquire the mutex, from places like
rfkill_set_sw_state() that are documented to be callable from
any context the user likes to use. For Mike's case it led to a
deadlock, but other scenarios are possible.
Reported-by: Михаил Кринкин <krinkin.m.u@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The two fields in struct nl80211_bss_select_rssi_adjust did not state
their type or unit. Adding documentation.
Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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A couple of functions used with scan events were named with
term "send" although they were only preparing the the event
message so renamed those.
Also remove nl80211_send_sched_scan_results() in favor of
just calling nl80211_send_sched_scan() with the right value.
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
[mention nl80211_send_sched_scan_results() in the commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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A cleanup introduced a harmless warning in some configurations:
net/rfkill/core.c: In function 'rfkill_init':
net/rfkill/core.c:1350:1: warning: label 'error_input' defined but not used [-Wunused-label]
This adds another #ifdef around the label to match that around the
caller.
Fixes: 6124c53edeea ("rfkill: Cleanup error handling in rfkill_init()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Makes connections more reliable
Signed-off-by: Thomas Huehn <thomas.huehn@evernet-eg.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This was added during early development when 3x3 hardware was not very
common yet. This is completely unnecessary now.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Saves about 1.2 KiB memory per station
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This avoids the costly int_sqrt calls in the statistics update and moves
it to the debugfs code instead.
This also fixes an overflow in the previous standard deviation
calculation.
Signed-off-by: Thomas Huehn <thomas.huehn@evernet-eg.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The loss of a bit of extra precision does not hurt the calculation, 12
bits is still enough to calculate probabilities well. Reducing the scale
makes it easier to avoid overflows
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This field is redundant, because it is simply last success divided by
last attempt count. Removing it from the rate stats struct saves about
1.2 KiB per HT station.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Makes the code a bit more efficient
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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They are only used for debugging purposes and take a very long time to
overflow. Visibly reduces the size of the per-sta rate control data.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Test short preamble support in minstrel_ht_update_caps instead of
looking at the per-packet flag. Makes the code more efficient.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Improves dcache footprint by ensuring that fewer cache lines need to be
touched.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This speeds up the function in case a station already exists by avoiding
calling an expensive kzalloc just to free it again after the next check.
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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These functions drifts TSF timers, not TBTT.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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mesh_sync_offset_adjust_tbtt() implements Extensible synchronization
framework ([1] 13.13.2 Extensible synchronization framework). It shall
not operate the flag "TBTT Adjusting subfield" ([1] 8.4.2.100.8 Mesh
Capability), since it is used only for MBCA ([1] 13.13.4 Mesh beacon
collision avoidance, see 13.13.4.4.3 TBTT scanning and adjustment
procedures for detail). So this patch remove the flag operations.
[1] IEEE Std 802.11 2012
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
[remove adjusting_tbtt entirely, since it's now unused]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a new "global" (i.e. not per-rfkill device) LED trigger, rfkill-any,
which may be useful on laptops with a single "radio LED" and multiple
radio transmitters. The trigger is meant to turn a LED on whenever
there is at least one radio transmitter active and turn it off
otherwise.
This requires taking rfkill_global_mutex before calling rfkill_set_block()
in rfkill_resume(): since __rfkill_any_led_trigger_event() is called from
rfkill_set_block() unconditionally, each caller of the latter needs to
take care of locking rfkill_global_mutex.
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Use a separate label per error condition in rfkill_init() to make it a
bit cleaner and easier to extend.
Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Could be useful for debugging memory consumption issues,
and perhaps power-save as well.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Previously, kernel sends NEW_PEER_CANDIDATE event to user land even if
the found peer does not have any room to accept other peer. This causes
continuous connection trials.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add the ability for an AP (and associated VLANs) to perform
multicast-to-unicast conversion for ARP, IPv4 and IPv6 frames
(possibly within 802.1Q). If enabled, such frames are to be sent
to each station separately, with the DA replaced by their own
MAC address rather than the group address.
Note that this may break certain expectations of the receiver,
such as the ability to drop unicast IP packets received within
multicast L2 frames, or the ability to not send ICMP destination
unreachable messages for packets received in L2 multicast (which
is required, but the receiver can't tell the difference if this
new option is enabled.)
This also doesn't implement the 802.11 DMS (directed multicast
service).
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
[use true/false, rename label to the correct "multicast",
use __be16 for ethertype and network order for constants]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit 4a733ef1bea7 (mac80211: remove PM-QoS listener) removed all use
of 'beaconint_us' from ieee80211_recalc_ps() but left the variable
intact. Compiling with W=1 gives the following warning, fix it.
net/mac80211/mlme.c: In function ‘ieee80211_recalc_ps’:
net/mac80211/mlme.c:1481:7: warning: variable ‘beaconint_us’ set but not used [-Wunused-but-set-variable]
iee80211_tu_to_usec has no side-effects and is safe to remove.
Fixes: 4a733ef1bea7 ("mac80211: remove PM-QoS listener")
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kirtika Ruchandani <kirtika@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit b1bce14a7954 (mac80211: update opmode when adding new station)
refactored ieee80211_vht_handle_opmode into __ieee80211_vht_handle_opmode
and ieee80211_vht_handle_opmode leaving a set but unused variable
(sband) in the former. Compiling with W=1 gives the following warning,
fix it.
net/mac80211/vht.c: In function ‘__ieee80211_vht_handle_opmode’:
net/mac80211/vht.c:424:35: warning: variable ‘sband’ set but not used [-Wunused-but-set-variable]
Remove 'struct ieee80211_local* local' as well, it was only used to
set sband.
This is a harmless warning, and is only being fixed to reduce the
noise with W=1 in the kernel.
Fixes: b1bce14a7954 ("mac80211: update opmode when adding new station")
Cc: Marek Kwaczynski <marek.kwaczynski@tieto.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kirtika Ruchandani <kirtika@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit 633e27132625 (mac80211: split sched scan IEs) introduced the
len variable to keep track of the return value of
ieee80211_build_preq_ies() but did not use it. Compiling with W=1
gives the following warning, fix it.
net/mac80211/scan.c: In function ‘__ieee80211_request_sched_scan_start’:
net/mac80211/scan.c:1123:9: warning: variable ‘len’ set but not used [-Wunused-but-set-variable]
This is a harmless warning and is only being fixed to reduce the noise
with W=1 in the kernel.
Fixes: 633e27132625 ("mac80211: split sched scan IEs")
Cc: David Spinadel <david.spinadel@intel.com>
Cc: Alexander Bondar <alexander.bondar@intel.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kirtika Ruchandani <kirtika@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit 5bcae31d9 (mac80211: implement multi-vif in-place reservations)
introduced ieee80211_vif_use_reserved_switch() with a counter variable
'i' that is set but not used. Compiling with W=1 gives the following
warning, fix it.
net/mac80211/chan.c: In function ‘ieee80211_vif_use_reserved_switch’:
net/mac80211/chan.c:1273:6: warning: variable ‘i’ set but not used [-Wunused-but-set-variable]
This is a harmless warning, and is only being fixed to reduce the
noise obtained with W=1 in the kernel.
Fixes: 5bcae31d9 ("mac80211: implement multi-vif in-place reservations")
Cc: Michal Kazior <michal.kazior@tieto.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kirtika Ruchandani <kirtika@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit 3b17fbf87d5d introduced sta_get_expected_throughput()
leaving variable 'struct rate_control_ref* ref' set but unused.
Compiling with W=1 gives the following warning, fix it.
net/mac80211/sta_info.c: In function ‘sta_set_sinfo’:
net/mac80211/sta_info.c:2052:27: warning: variable ‘ref’ set but not used [-Wunused-but-set-variable]
Fixes: 3b17fbf87d5d ("mac80211: mesh: Add support for HW RC implementation")
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Maxim Altshul <maxim.altshul@ti.com>
Signed-off-by: Kirtika Ruchandani <kirtika@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit f027c2aca0cf introduced 'rates_idx' in
ieee80211_tx_status_noskb but did not use it. Compiling with W=1
gives the following warning, fix it.
mac80211/status.c: In function ‘ieee80211_tx_status_noskb’:
mac80211/status.c:636:6: warning: variable ‘rates_idx’ set but not used [-Wunused-but-set-variable]
This is a harmless warning, and is only being fixed to reduce the
noise generated with W=1.
Fixes: f027c2aca0cf ("mac80211: add ieee80211_tx_status_noskb")
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kirtika Ruchandani <kirtika@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit 554891e63a29 introduced 'struct ieee80211_rx_status' in
ieee80211_rx_h_defragment but did not use it. Compiling with W=1
gives the following warning, fix it.
net/mac80211/rx.c: In function ‘ieee80211_rx_h_defragment’:
net/mac80211/rx.c:1911:30: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
Fixes: 554891e63a29 ("mac80211: move packet flags into packet")
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Kirtika Ruchandani <kirtika@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There is no need to prevent toggling multicast_to_unicast while
interface is already up. This change simplifies reconfiguration
from hostapd.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The presence of the NL80211_ATTR_SCHED_SCAN_INTERVAL attribute was
checked in nl80211_parse_sched_scan() and
nl80211_parse_sched_scan_plans() which might be a bit redundant
so removing one.
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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