[ Upstream commit 28225a6ef80ebf46c46e5fbd5b1ee231a0b2b5b7 ] Before, the hardware would be allowed to transmit injected 802.11 MPDUs as A-MSDU. This resulted in corrupted frames being transmitted. Now, injected MPDUs are transmitted as-is, without A-MSDU. The fix was verified with frame injection on MT7915 hardware, both with and without the injected frame being encrypted. If the hardware cannot do A-MSDU aggregation on MPDUs, this problem would also be present in the TX path where mac80211 does the 802.11 encapsulation. However, I have not observed any such problem when disabling IEEE80211_HW_SUPPORTS_TX_ENCAP_OFFLOAD to force that mode. Therefore this fix is isolated to injected frames only. The same A-MSDU logic is also present in the mt7921 driver, so it is likely that this fix should be applied there too. I do not have access to mt7921 hardware so I have not been able to test that. Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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