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20149e9eb6
The tunnel device such as vxlan, bareudp and geneve in the lwt mode set the outer df only based TUNNEL_DONT_FRAGMENT. And this was also the behavior for gre device before switching to use ip_md_tunnel_xmit in commit962924fa2b("ip_gre: Refactor collect metatdata mode tunnel xmit to ip_md_tunnel_xmit") When the ip_gre in lwt mode xmit with ip_md_tunnel_xmi changed the rule and make the discrepancy between handling of DF by different tunnels. So in the ip_md_tunnel_xmit should follow the same rule like other tunnels. Fixes:cfc7381b30("ip_tunnel: add collect_md mode to IPIP tunnel") Signed-off-by: wenxu <wenxu@ucloud.cn> Link: https://lore.kernel.org/r/1604028728-31100-1-git-send-email-wenxu@ucloud.cn 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.