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17aa2c3326
After the previous works, we can now expand and display the MCC pattern
in more detail, as shown below.
|< MCC interval >|
|< duration ref >| (if mid bt) |< duration aux >| (if tail bt) |
|<tob ref >|< toa ref>| ... |<tob aux >|< toa aux>| ... |
V V
tbtt ref tbtt aux
|< beacon offset >|
(where tob means `time offset behind` and toa means `time offset ahead`)
There are two key points.
1. decide position of BT slot if MCC pattern needs to handle BT duration.
2. calculate all parameters related to tob and toa in MCC pattern.
For point (1), when BT duration needs to be handled, BT position will
rely on beacon offset, either middle or tail. For point (2), to ensure
durations of the Wi-Fi roles cover their beacons, we have to calculate
tob and toa for them according to their TBTT.
And, there are two strategies to calculate parameters, strict and loose.
In strict pattern, all parameters take HW time into account as limitation.
But, the strict calculation are not always successful. In loose pattern,
it only tries to give positive parameters to reference role and doesn't
care much about auxiliary role. If unfortunately auxiliary role gets
negative parameters in loose pattern, FW will be notified and then deal
with it. So, the loose calculation won't fail. In general, we always try
strict pattern cases before using a loose pattern.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-5-pkshih@realtek.com
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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.