selftests: devlink_lib: Add devlink port helpers

Add two devlink port helpers:
 * devlink port get by netdev
 * devlink cpu port get

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh
index 07e360e2f275e8dd592e96788ce8c497f42e0333..0df6d8942721565256209c80413e96fde25c9ffa 100644 (file)
--- a/tools/testing/selftests/net/forwarding/devlink_lib.sh
+++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh
@@ -419,3 +419,19 @@ devlink_trap_drop_cleanup()
        kill $mz_pid && wait $mz_pid &> /dev/null
        tc filter del dev $dev egress protocol $proto pref $pref handle $handle flower
 }
+
+devlink_port_by_netdev()
+{
+       local if_name=$1
+
+       devlink -j port show $if_name | jq -e '.[] | keys' | jq -r '.[]'
+}
+
+devlink_cpu_port_get()
+{
+       local cpu_dl_port_num=$(devlink port list | grep "$DEVLINK_DEV" |
+                               grep cpu | cut -d/ -f3 | cut -d: -f1 |
+                               sed -n '1p')
+
+       echo "$DEVLINK_DEV/$cpu_dl_port_num"
+}