592d365159
Currently, we only support the mirred redirect TC sub-action. In order to support flow based vport mirroring, add support to parse the mirred mirror sub-action. For mirroring, user-space will typically set the action order such that the mirror port (mirror VF) sees packets as the original port (VF under mirroring) sent them or as it will receive them. In the general case, it means that packets are potentially sent to the mirror port before or after some actions were applied on them. To properly do that, we should follow on the exact action order as set for the flow and make sure this will also be the case when we program the HW offload. We introduce a counter for the output ports (attr->out_count), which we increase when parsing each mirred redirect/mirror sub-action and when dealing with encap. We introduce a counter (attr->mirror_count) telling us if split is needed. If no split is needed and mirroring is just multicasting to vport, the mirror count is zero, all the actions of the TC flow should apply on that single HW flow. If split is needed, the mirror count tells where to do the split, all non-mirred tc actions should apply only after the split. The mirror count is set while parsing the following actions encap/decap, header re-write, vlan push/pop. Signed-off-by: Chris Mi <chrism@mellanox.com> Reviewed-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.