From: Martin Varghese <[email protected]>
The existing PUSH MPLS & POP MPLS actions inserts & removes MPLS header
between ethernet header and the IP header. Though this behaviour is fine
for L3 VPN where an IP packet is encapsulated inside a MPLS tunnel, it
does not suffice the L2 VPN requirements. In L2 VPN the ethernet packets
must be encapsulated inside MPLS tunnel
In this change the encap & decap actions are extended to support MPLS
packet type. The encap & decap adds and removes MPLS header at the start
of packet as depicted below.
Encapsulation:
Actions - encap(mpls(ether_type=0x8847)),encap(ethernet)
Incoming packet -> | ETH | IP | Payload |
1 Actions - encap(mpls(ether_type=0x8847)) [Datapath action - ADD_MPLS:0x8847]
Outgoing packet -> | MPLS | ETH | Payload|
2 Actions - encap(ethernet) [ Datapath action - push_eth ]
Outgoing packet -> | ETH | MPLS | ETH | Payload|
Decapsulation:
Incoming packet -> | ETH | MPLS | ETH | IP | Payload |
Actions - decap(),decap(packet_type(ns=0,type=0)
1 Actions - decap() [Datapath action - pop_eth)
Outgoing packet -> | MPLS | ETH | IP | Payload|
2 Actions - decap(packet_type(ns=0,type=0) [Datapath action - POP_MPLS:0x6558]
Outgoing packet -> | ETH | IP | Payload|
Martin Varghese (2):
Encap & Decap actions for MPLS packet type.
Datapath: New MPLS actions for layer 2 tunnelling.
NEWS | 2 +-
datapath/actions.c | 42 +++++++--
datapath/flow_netlink.c | 33 +++++++
.../linux/compat/include/linux/openvswitch.h | 35 ++++++-
include/openvswitch/ofp-ed-props.h | 18 ++++
lib/dpif-netdev.c | 1 +
lib/dpif.c | 1 +
lib/odp-execute.c | 12 +++
lib/odp-util.c | 58 +++++++++---
lib/ofp-actions.c | 5 +
lib/ofp-ed-props.c | 91 +++++++++++++++++++
lib/ovs-actions.xml | 31 +++++--
lib/packets.c | 36 ++++++++
lib/packets.h | 2 +
ofproto/ofproto-dpif-ipfix.c | 1 +
ofproto/ofproto-dpif-sflow.c | 1 +
ofproto/ofproto-dpif-xlate.c | 60 ++++++++++++
ofproto/ofproto-dpif.c | 39 ++++++++
ofproto/ofproto-dpif.h | 5 +-
tests/system-traffic.at | 36 ++++++++
20 files changed, 476 insertions(+), 33 deletions(-)
--
2.18.4
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