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ipv6: sr: add code base for control plane support of SR-IPv6

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This patch adds the necessary hooks and structures to provide support
for SR-IPv6 control plane, essentially the Generic Netlink commands
that will be used for userspace control over the Segment Routing
kernel structures.

The genetlink commands provide control over two different structures:
tunnel source and HMAC data. The tunnel source is the source address
that will be used by default when encapsulating packets into an
outer IPv6 header + SRH. If the tunnel source is set to :: then an
address of the outgoing interface will be selected as the source.

The HMAC commands currently just return ENOTSUPP and will be implemented
in a future patch.

Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Lebrun
2016-11-08 14:57:40 +01:00
committed by David S. Miller
parent 1ababeba4a
commit 915d7e5e59
7 changed files with 278 additions and 2 deletions
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include/net/netns/ipv6.h
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@@ -85,6 +85,7 @@ struct netns_ipv6 {
#endif
atomic_t dev_addr_genid;
atomic_t fib6_sernum;
struct seg6_pernet_data *seg6_data;
};
#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)