From: Martin Varghese <martinvarghesenokia@gmail•com>
To: netdev@vger•kernel.org, pshelar@ovn•org, davem@davemloft•net,
scott.drennan@nokia•com, jbenc@redhat•com,
martin.varghese@nokia•com
Subject: [PATCH net-next 0/3] New openvswitch MPLS actions for layer 2 tunnelling
Date: Tue, 10 Dec 2019 13:45:28 +0530 [thread overview]
Message-ID: <cover.1575964218.git.martin.varghese@nokia.com> (raw)
From: Martin Varghese <martin.varghese@nokia•com>
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 (l2 tunnelling) requirements. In L2 VPN
the MPLS header should encapsulate the ethernet packet.
The new mpls actions PTAP_PUSH_MPLS & PTAP_POP_MPLS inserts and removes
MPLS header from start of the packet respectively.
PTAP_PUSH_MPLS - Inserts MPLS header at the start of the packet.
@ethertype - Ethertype of MPLS header. 0x8847 for unicast,0x8848 for multicast.
PTAP_POP_MPLS - Removes MPLS header from the start of the packet.
@ethertype - Ethertype of next header following the popped MPLS header.
Value 0 in ethertype indicates the tunnelled packet is
ethernet.
OVS userspace changes -
---------------------
Encap & Decap ovs actions are extended to support MPLS packet type. The encap & decap
adds and removes MPLS header at the start of packet as depicted below.
Actions - encap(mpls(ether_type=0x8847)),encap(ethernet)
Incoming packet -> | ETH | IP | Payload |
1 Actions - encap(mpls(ether_type=0x8847)) [Kernel action - ptap_push_mpls:0x8847]
Outgoing packet -> | MPLS | ETH | Payload|
2 Actions - encap(ethernet) [ Kernel 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() [Kernel action - pop_eth)
Outgoing packet -> | MPLS | ETH | IP | Payload|
2 Actions - decap(packet_type(ns=0,type=0) [Kernel action - ptap_pop_mpls:0]
Outgoing packet -> | ETH | IP | Payload
Martin Varghese (3):
net: skb_mpls_push() modified to allow MPLS header push at start of
packet.
net: Rephrased comments section of skb_mpls_pop()
openvswitch: New MPLS actions for layer 2 tunnelling
include/uapi/linux/openvswitch.h | 2 ++
net/core/skbuff.c | 9 ++++++---
net/openvswitch/actions.c | 40 ++++++++++++++++++++++++++++++++++++++++
net/openvswitch/flow_netlink.c | 21 +++++++++++++++++++++
4 files changed, 69 insertions(+), 3 deletions(-)
--
1.8.3.1
next reply other threads:[~2019-12-10 8:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 8:15 Martin Varghese [this message]
2019-12-10 8:15 ` [PATCH net-next 1/3] net: skb_mpls_push() modified to allow MPLS header push at start of packet Martin Varghese
2019-12-11 1:43 ` David Miller
2019-12-11 3:06 ` Varghese, Martin (Nokia - IN/Bangalore)
2019-12-10 8:16 ` [PATCH net-next 2/3] net: Rephrased comments section of skb_mpls_pop() Martin Varghese
2019-12-10 8:16 ` [PATCH net-next 3/3] openvswitch: New MPLS actions for layer 2 tunnelling Martin Varghese
2019-12-10 15:11 ` Jiri Benc
2019-12-10 23:51 ` Martin Varghese
2019-12-10 21:22 ` Pravin Shelar
2019-12-11 0:02 ` Martin Varghese
2019-12-11 6:15 ` Pravin Shelar
2019-12-11 15:39 ` Martin Varghese
2019-12-12 4:19 ` Pravin Shelar
2019-12-12 16:02 ` Martin Varghese
2019-12-13 3:15 ` Pravin Shelar
2019-12-13 3:53 ` Martin Varghese
2019-12-13 7:57 ` Pravin Shelar
2019-12-11 6:15 ` Pravin Shelar
2019-12-11 15:42 ` Martin Varghese
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