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[ Upstream commit944fd1aeac] The commit3c82a21f43("net: allow binding socket in a VRF when there's an unbound socket") changed the inet socket lookup to avoid packets in a VRF from matching an unbound socket. This is to ensure the necessary isolation between the default and other VRFs for routing and forwarding. VRF-unaware processes running in the default VRF cannot access another VRF and have to be run with 'ip vrf exec <vrf>'. This is to be expected with tcp_l3mdev_accept disabled, but could be reallowed when this sysctl option is enabled. So instead of directly checking dif and sdif in inet[6]_match, here call inet_sk_bound_dev_eq(). This allows a match on unbound socket for non-zero sdif i.e. for packets in a VRF, if tcp_l3mdev_accept is enabled. Fixes:3c82a21f43("net: allow binding socket in a VRF when there's an unbound socket") Signed-off-by: Mike Manning <mvrmanning@gmail.com> Link: https://lore.kernel.org/netdev/a54c149aed38fded2d3b5fdb1a6c89e36a083b74.camel@lasnet.de/ Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.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.
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.