net/sched: cls_flower: Allow setting encapsulation fields as used key

When encapsulation field is set, mark it as used key for the flow
dissector. This will be used by offloading drivers.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/cls_flower.c

@@ -567,6 +567,16 @@ static void fl_init_dissector(struct cls_fl_head *head,
 			     FLOW_DISSECTOR_KEY_PORTS, tp);
 	FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
 			     FLOW_DISSECTOR_KEY_VLAN, vlan);
+	FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
+			     FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
+	FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
+			     FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
+	FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
+			     FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
+	if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
+	    FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
+		FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
+			   enc_control);
 
 	skb_flow_dissector_init(&head->dissector, keys, cnt);
 }