From 91820da6ae85904d95ed53bf3a83f9ec44a6b80a Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 10 Nov 2016 16:28:23 +0100 Subject: openvswitch: add Ethernet push and pop actions It's not allowed to push Ethernet header in front of another Ethernet header. It's not allowed to pop Ethernet header if there's a vlan tag. This preserves the invariant that L3 packet never has a vlan tag. Based on previous versions by Lorand Jakab and Simon Horman. Signed-off-by: Lorand Jakab Signed-off-by: Simon Horman Signed-off-by: Jiri Benc Acked-by: Pravin B Shelar Signed-off-by: David S. Miller --- include/uapi/linux/openvswitch.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/uapi/linux/openvswitch.h b/include/uapi/linux/openvswitch.h index 59ed3992c760..375d812fea36 100644 --- a/include/uapi/linux/openvswitch.h +++ b/include/uapi/linux/openvswitch.h @@ -705,6 +705,15 @@ enum ovs_nat_attr { #define OVS_NAT_ATTR_MAX (__OVS_NAT_ATTR_MAX - 1) +/* + * struct ovs_action_push_eth - %OVS_ACTION_ATTR_PUSH_ETH action argument. + * @addresses: Source and destination MAC addresses. + * @eth_type: Ethernet type + */ +struct ovs_action_push_eth { + struct ovs_key_ethernet addresses; +}; + /** * enum ovs_action_attr - Action types. * @@ -738,6 +747,10 @@ enum ovs_nat_attr { * is no MPLS label stack, as determined by ethertype, no action is taken. * @OVS_ACTION_ATTR_CT: Track the connection. Populate the conntrack-related * entries in the flow key. + * @OVS_ACTION_ATTR_PUSH_ETH: Push a new outermost Ethernet header onto the + * packet. + * @OVS_ACTION_ATTR_POP_ETH: Pop the outermost Ethernet header off the + * packet. * * Only a single header can be set with a single %OVS_ACTION_ATTR_SET. Not all * fields within a header are modifiable, e.g. the IPv4 protocol and fragment @@ -765,6 +778,8 @@ enum ovs_action_attr { * bits. */ OVS_ACTION_ATTR_CT, /* Nested OVS_CT_ATTR_* . */ OVS_ACTION_ATTR_TRUNC, /* u32 struct ovs_action_trunc. */ + OVS_ACTION_ATTR_PUSH_ETH, /* struct ovs_action_push_eth. */ + OVS_ACTION_ATTR_POP_ETH, /* No argument. */ __OVS_ACTION_ATTR_MAX, /* Nothing past this will be accepted * from userspace. */ -- cgit v1.2.3