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ce3497e207
Add support for receive timestamping. When enabled, the hardware adds a timestamp into the receive queue descriptor for all received packets with no filtering. Hence, we can only support NONE or ALL receive filter modes. The timestamp in the receive queue contains two bit sof seconds and the full nanosecond timestamp. This has to be merged with the remainder of the seconds from the TAI clock to arrive at a full timestamp before we can convert it to a ktime for the skb hardware timestamp field. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.