Re: [PATCH net-next v4 3/3] selftests: net: add coverage for fdb nexthop dst_port

[Ido Schimmel]

On Thu, Jul 23, 2026 at 01:17:55AM +0000, Jack Ma wrote:
> Add coverage for the new per-nexthop VXLAN destination port
> (NHA_DST_PORT).
> 
> In fib_nexthops.sh, new ipv4_fdb_port_fcnal() and ipv6_fdb_port_fcnal()
> tests check that a dst_port is accepted on an fdb nexthop that has a
> gateway and echoed back on dump, that it is rejected without a gateway
> and rejected when zero, that a group may hold legs that differ only in
> UDP port, and that a portless fdb nexthop omits the attribute.  The
> tests SKIP when iproute2 lacks the "dst_port" keyword.
> 
> In test_vxlan_nh.sh, basic_tx_common() gains a second fdb nexthop group
> whose nexthop carries a destination port that differs from the VXLAN
> device default, plus a flower filter keyed on that port, to confirm the
> per-nexthop port is used on the wire.  The test now requires an iproute2
> with dst_port support.
> 
> Signed-off-by: Jack Ma <jack4it@xxxxxxxxx>

Reviewed-by: Ido Schimmel <idosch@xxxxxxxxxx>