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Miguel Fadon Perlines 58b35f2768 arp: fix arp_filter on l3slave devices
arp_filter performs an ip_route_output search for arp source address and
checks if output device is the same where the arp request was received,
if it is not, the arp request is not answered.

This route lookup is always done on main route table so l3slave devices
never find the proper route and arp is not answered.

Passing l3mdev_master_ifindex_rcu(dev) return value as oif fixes the
lookup for l3slave devices while maintaining same behavior for non
l3slave devices as this function returns 0 in that case.

Fixes: 613d09b30f ("net: Use VRF device index for lookups on TX")
Signed-off-by: Miguel Fadon Perlines <mfadon@teldat.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-05 22:05:03 -04:00
arch Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
block Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
certs
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Documentation Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
drivers Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
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include Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
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lib Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
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net arp: fix arp_filter on l3slave devices 2018-04-05 22:05:03 -04:00
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tools Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
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README

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.