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wifi: mt76: fix race condition related to checking tx queue fill status

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[ Upstream commit 0335c034e7 ]

When drv_tx calls race against local tx scheduling, the queue fill status checks
can potentially race, leading to dma queue entries being overwritten.
Fix this by deferring packets from drv_tx calls to the tx worker, in order to
ensure that all regular queue tx comes from the same context.

Reported-by: Ryder Lee <Ryder.Lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felix Fietkau 2023-08-29 10:39:53 +02:00 • committed by Greg Kroah-Hartman
commit d2defcddfe
10 changed files with 155 additions and 51 deletions
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