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bea7907837
DSA has gained the recent ability to deal gracefully with upper interfaces it cannot offload, such as the bridge, bonding or team drivers. When such uppers exist, the ports are still in standalone mode as far as the hardware is concerned. But when we deliver packets to the software bridge in order for that to do the forwarding, there is an unpleasant surprise in that the bridge will refuse to forward them. This is because we unconditionally set skb->offload_fwd_mark = true, meaning that the bridge thinks the frames were already forwarded in hardware by us. Since dp->bridge_dev is populated only when there is hardware offload for it, but not in the software fallback case, let's introduce a new helper that can be called from the tagger data path which sets the skb->offload_fwd_mark accordingly to zero when there is no hardware offload for bridging. This lets the bridge forward packets back to other interfaces of our switch, if needed. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Tobias Waldekranz <tobias@waldekranz.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.