selftests: fib-onlink: Add test cases for nexthop device mismatch

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Add test cases that verify that when the "onlink" keyword is specified,
both address families (with and without VRF) accept routes with a
gateway address that is reachable via a different interface than the one
specified.

Output without "ipv6: Allow for nexthop device mismatch with "onlink"":

 # ./fib-onlink-tests.sh | grep mismatch
 TEST: nexthop device mismatch                             [ OK ]
 TEST: nexthop device mismatch                             [ OK ]
 TEST: nexthop device mismatch                             [FAIL]
 TEST: nexthop device mismatch                             [FAIL]

Output with "ipv6: Allow for nexthop device mismatch with "onlink"":

 # ./fib-onlink-tests.sh | grep mismatch
 TEST: nexthop device mismatch                             [ OK ]
 TEST: nexthop device mismatch                             [ OK ]
 TEST: nexthop device mismatch                             [ OK ]
 TEST: nexthop device mismatch                             [ OK ]

That is, the IPv4 tests were always passing, but the IPv6 ones only pass
after the specified patch.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20260111120813.159799-6-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Ido Schimmel 2026-01-11 14:08:13 +02:00 • committed by Jakub Kicinski

parent b853b94e84

commit f8f9ee9d8b

1 changed files with 8 additions and 0 deletions

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tools/testing/selftests/net/fib-onlink-tests.sh

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