netdev-offload-dpdk: Support offload of clone push_vlan action.

Support for tnl_push/output already exists, add push_vlan.

Signed-off-by: Allen Chen <[email protected]>
Signed-off-by: Kevin Traynor <[email protected]>

Author: kevintraynor

Documentation/howto/dpdk.rst

@@ -399,7 +399,7 @@ Supported actions for hardware offload are:
 - Modification of TCP/UDP (mod_tp_src/mod_tp_dst).
 - VLAN Push/Pop (push_vlan/pop_vlan).
 - Modification of IPv6 (set_field:<ADDR>->ipv6_src/ipv6_dst/mod_nw_ttl).
-- Clone/output (tnl_push and output) for encapsulating over a tunnel.
+- Clone/output (tnl_push/push_vlan/output) for encapsulating over a tunnel.
 - Tunnel pop, for packets received on physical ports.
 
 .. note::

lib/netdev-offload-dpdk.c

@@ -2137,6 +2137,9 @@ parse_clone_actions(struct netdev *netdev,
             if (add_output_action(netdev, actions, ca)) {
                 return -1;
             }
+        } else if (clone_type == OVS_ACTION_ATTR_PUSH_VLAN) {
+            const struct ovs_action_push_vlan *vlan = nl_attr_get(ca);
+            parse_vlan_push_action(actions, vlan);
         } else {
             VLOG_DBG_RL(&rl,
                         "Unsupported nested action inside clone(), "