Commit a381ed12 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller

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: default avatarPetr Machata <petrm@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3136a369
...@@ -549,6 +549,23 @@ forwarding_restore() ...@@ -549,6 +549,23 @@ forwarding_restore()
sysctl_restore net.ipv4.conf.all.forwarding 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() tc_offload_check()
{ {
local num_netifs=${1:-$NUM_NETIFS} local num_netifs=${1:-$NUM_NETIFS}
......
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