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In tunnel and chains setup, we decapsulate the packets on first chain hop, if we miss on later chains, the packet will comes up without tunnel header, so it won't be taken by the tunnel device automatically, which fills the tunnel metadata, and further tc tunnel matches won't work. On miss, we get the tunnel mapping id, which was set on the chain 0 rule that decapsulated the packet. This rule matched the tunnel outer headers. From the tunnel mapping id, we get to this tunnel matches and restore the equivalent tunnel info metadata dst on the skb. We also set the skb->dev to the relevant device (tunnel device). Now further tc processing can be done on the relevant device. Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Oz Shlomo <ozsh@mellanox.com> Reviewed-by: Mark Bloch <markb@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.
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.