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authorDavid Lebrun <david.lebrun@uclouvain.be>2016-11-08 16:57:40 +0300
committerDavid S. Miller <davem@davemloft.net>2016-11-10 04:40:06 +0300
commit915d7e5e5930b4f01d0971d93b9b25ed17d221aa (patch)
tree4472f02afaab50ddcded4df81c43bc5991abd751 /include/net/seg6.h
parent1ababeba4a21f3dba3da3523c670b207fb2feb62 (diff)
downloadlinux-915d7e5e5930b4f01d0971d93b9b25ed17d221aa.tar.xz
ipv6: sr: add code base for control plane support of SR-IPv6
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>
Diffstat (limited to 'include/net/seg6.h')
-rw-r--r--include/net/seg6.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/net/seg6.h b/include/net/seg6.h
index 4dd52a7e95f1..7c7b8ed39661 100644
--- a/include/net/seg6.h
+++ b/include/net/seg6.h
@@ -14,6 +14,9 @@
#ifndef _NET_SEG6_H
#define _NET_SEG6_H
+#include <linux/net.h>
+#include <linux/ipv6.h>
+
static inline void update_csum_diff4(struct sk_buff *skb, __be32 from,
__be32 to)
{
@@ -33,4 +36,17 @@ static inline void update_csum_diff16(struct sk_buff *skb, __be32 *from,
skb->csum = ~csum_partial((char *)diff, sizeof(diff), ~skb->csum);
}
+struct seg6_pernet_data {
+ struct mutex lock;
+ struct in6_addr __rcu *tun_src;
+};
+
+static inline struct seg6_pernet_data *seg6_pernet(struct net *net)
+{
+ return net->ipv6.seg6_data;
+}
+
+extern int seg6_init(void);
+extern void seg6_exit(void);
+
#endif