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userspace: Add SRv6 tunnel support.

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SRv6 (Segment Routing IPv6) tunnel vport is responsible
for encapsulation and decapsulation the inner packets with
IPv6 header and an extended header called SRH
(Segment Routing Header). See spec in:

https://datatracker.ietf.org/doc/html/rfc8754

This patch implements SRv6 tunneling in userspace datapath.
It uses `remote_ip` and `local_ip` options as with existing
tunnel protocols. It also adds a dedicated `srv6_segs` option
to define a sequence of routers called segment list.

Signed-off-by: Nobuhiro MIKI <nmiki@yahoo-corp.jp>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Nobuhiro MIKI
2023-03-29 14:51:17 +09:00
committed by Ilya Maximets
parent 349112f975
commit 03fc1ad785
18 changed files with 450 additions and 1 deletions
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1
include/linux/openvswitch.h
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@@ -254,6 +254,7 @@ enum ovs_vport_type {
OVS_VPORT_TYPE_IP6GRE = 109,
OVS_VPORT_TYPE_GTPU = 110,
OVS_VPORT_TYPE_BAREUDP = 111, /* Bareudp tunnel. */
OVS_VPORT_TYPE_SRV6 = 112, /* SRv6 tunnel. */
__OVS_VPORT_TYPE_MAX
};