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[ Upstream commit1166a530a8] Before Linux v5.8 an AF_INET6 SOCK_DGRAM (udp/udplite) socket with SOL_UDP, UDP_ENCAP, UDP_ENCAP_ESPINUDP{,_NON_IKE} enabled would just unconditionally use xfrm4_udp_encap_rcv(), afterwards such a socket would use the newly added xfrm6_udp_encap_rcv() which only handles IPv6 packets. Cc: Sabrina Dubroca <sd@queasysnail.net> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Benedict Wong <benedictwong@google.com> Cc: Yan Yan <evitayan@google.com> Fixes:0146dca70b("xfrm: add support for UDPv6 encapsulation of ESP") Signed-off-by: Maciej Żenczykowski <maze@google.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Sasha Levin <sashal@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.