Commit a381ed12 authored Sep 20, 2018 by Petr Machata Committed by David S. Miller Sep 20, 2018

selftests: forwarding: lib: Add mtu_set(), mtu_restore()



Some selftests need to tweak MTU of an interface, and naturally should
at teardown restore the MTU back to the original value. Add two
functions to facilitate this MTU handling: mtu_set() to change MTU
value, and mtu_reset() to change it back to what it was before.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 3136a369

tools/testing/selftests/net/forwarding/lib.sh

+17 −0

Original line number	Diff line number	Diff line
		@@ -549,6 +549,23 @@ forwarding_restore()
		sysctl_restore net.ipv4.conf.all.forwarding
		}

		declare -A MTU_ORIG
		mtu_set()
		{
		local dev=$1; shift
		local mtu=$1; shift

		MTU_ORIG["$dev"]=$(ip -j link show dev $dev \| jq -e '.[].mtu')
		ip link set dev $dev mtu $mtu
		}

		mtu_restore()
		{
		local dev=$1; shift

		ip link set dev $dev mtu ${MTU_ORIG["$dev"]}
		}

		tc_offload_check()
		{
		local num_netifs=${1:-$NUM_NETIFS}