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BA CAM is used to ACK peer's packets, so it must be established when IEEE80211_AMPDU_RX_START, and free it by IEEE80211_AMPDU_RX_STOP. The hardware can support two static BA CAM entries, so I implement a bitmap and a struct to record which entry is used and its corresponding tid. Also, the hardware can learn and create dynamic BA CAM entries automatically if received packets don't match static BA CAM. That means it can still work if we don't use H2C to set static BA CAM. An exception is tid=0 should be always allocated in static BA CAM, so an existing static BA CAM will be replaced if it is full and peer is going to establish a BA with tid=0. The new firmware use new format of this H2C, so I upgrade it as well. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20220104012052.6911-1-pkshih@realtek.com
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.