c4f033d9e0
The hardware was designed to handle flow detection and creation of flow entries by itself, relying on the software primarily for filling in egress routing information. When there is a hash collision between multiple flows, this allows the hardware to maintain the entry for the most active flow. Additionally, the hardware only keeps offloading active for entries with at least 30 packets per second. With this rework, the code no longer creates a hardware entries directly. Instead, the hardware entry is only created when the PPE reports a matching unbound flow with the minimum target rate. In order to reduce CPU overhead, looking for flows belonging to a hash entry is rate limited to once every 100ms. This rework is also used as preparation for emulating bridge offload by managing L4 offload entries on demand. Signed-off-by: Felix Fietkau <nbd@nbd.name> 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.