Commit Graph
10 Commits
Author SHA1 Message Date
Chad MonroeandFelix Fietkau db0460d663 wifi: mt76: fix deadlock in remain-on-channel
mt76_remain_on_channel() and mt76_roc_complete() call mt76_set_channel()
while already holding dev->mutex. Since mt76_set_channel() also acquires
dev->mutex, this results in a deadlock.

Use __mt76_set_channel() instead of mt76_set_channel().
Add cancel_delayed_work_sync() for mac_work before acquiring the mutex
in mt76_remain_on_channel() to prevent a secondary deadlock with the
mac_work workqueue.

Fixes: a8f424c1287c ("wifi: mt76: add multi-radio remain_on_channel functions")
Signed-off-by: Chad Monroe <[email protected]>
Link: https://patch.msgid.link/ace737e7b621af7c2adb33b0188011a5c1de2166.1765204256.git.chad@monroe.io
Signed-off-by: Felix Fietkau <[email protected]>
2026-01-27 12:23:26 +00:00
Felix Fietkau 33f29d2345 wifi: mt76: relicense to BSD-3-Clause-Clear
MediaTek has asked to switch from the ISC license to BSD-3-Clause-Clear,
in order to improve clarity and the legal integrity of the code.

The BSD-3-Clause license includes the "no endorsement" clause, which is
important for protecting the reputation of the original authors and
contributors by preventing unauthorized use of their names for endorsement
purposes.

This clause is absent in the BSD-2-Clause license, which is more permissive
but lacks this specific protection.

This change also cleans up the license of some Kconfig/Makefile files,
which were accidentally marked as GPL.

The GPL 2.0 remains in use on mt76x0, as well as two source files in mt7615
for which the license situation still needs to be clarified.

Signed-off-by: Felix Fietkau <[email protected]>
2025-10-13 11:11:19 +02:00
Felix Fietkau ddbe1f6eb2 wifi: mt76: abort scan/roc on hw restart
Avoid spurious channel changes and clean up allocated links

Signed-off-by: Felix Fietkau <[email protected]>
2025-09-12 13:51:36 +02:00
Felix Fietkau d70f62b8f1 wifi: mt76: fix vif link allocation
Reuse the vif deflink for link_id = 0 in order to avoid confusion with
vif->bss_conf, which also gets a link id of 0.

Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
2025-07-07 18:03:48 +02:00
Feng JiangandFelix Fietkau b70a4a6195 wifi: mt76: scan: Fix 'mlink' dereferenced before IS_ERR_OR_NULL check
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/r/[email protected]/
Fixes: 3ba20af886d1 ("wifi: mt76: scan: set vif offchannel link for scanning/roc")
Signed-off-by: Feng Jiang <[email protected]>
Link: https://patch.msgid.link/[email protected]
2025-05-21 14:30:01 +02:00
Felix Fietkau 2c068c9638 wifi: mt76: fix crash in mt76_switch_vif_chanctx
If the mode is CHANCTX_SWMODE_SWAP_CONTEXTS, the new chanctx is not
initialized yet.

Signed-off-by: Felix Fietkau <[email protected]>
2025-01-14 13:31:15 +01:00
Felix Fietkau 4d8d6e2e77 wifi: mt76: scan: set vif offchannel link for scanning/roc
The driver needs to know what vif link to use

Signed-off-by: Felix Fietkau <[email protected]>
2025-01-04 08:11:30 +01:00
Felix Fietkau f19cbcf834 wifi: mt76: add multi-radio remain_on_channel functions
This allows a driver using the generic channel context functions to
temporarily switch to another channel for off-channel rx/tx.

Signed-off-by: Felix Fietkau <[email protected]>
2024-10-27 08:52:59 +01:00
Felix Fietkau fc0ff17b53 wifi: mt76: add multi-radio support to scanning code
When scanning on a phy/vif combination that does not have an active link,
create a temporary link in order to ensure that we have a valid wcid.

Signed-off-by: Felix Fietkau <[email protected]>
2024-10-27 08:52:59 +01:00
Felix Fietkau d026be405c wifi: mt76: add chanctx functions for multi-channel phy support
This adds an implementation for the chanctx functions, which can be used
by multi-channel capable drivers. Preparation for adding MLO support.

Signed-off-by: Felix Fietkau <[email protected]>
2024-10-22 10:18:59 +02:00