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[ Upstream commit56f0f84e69] The bpf_ipv6_fib_lookup function should return BPF_FIB_LKUP_RET_FWD_DISABLED when forwarding is disabled for the input device. However instead of checking if forwarding is enabled on the input device, it checked the global net->ipv6.devconf_all->forwarding flag. Change it to behave as expected. Fixes:87f5fc7e48("bpf: Provide helper to do forwarding lookups in kernel FIB table") Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> 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.
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.