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Per-flow mirroring with the VCAP IS2 TCAM (in itself handled as an offload for tc-flower) is done by setting the MIRROR_ENA bit from the action vector of the filter. The packet is mirrored to the port mask configured in the ANA:ANA:MIRRORPORTS register (the same port mask as the destinations for port-based mirroring). Functionality was tested with: tc qdisc add dev swp3 clsact tc filter add dev swp3 ingress protocol ip \ flower skip_sw ip_proto icmp \ action mirred egress mirror dev swp1 and pinging through swp3, while seeing that the ICMP replies are mirrored towards swp1. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@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.