ipv6: RTA_PREFSRC support for ipv6 route source address selection

[ipv6] Add support for RTA_PREFSRC

This patch allows a user to select the preferred source address
for a specific IPv6-Route. It can be set via a netlink message
setting RTA_PREFSRC to a valid IPv6 address which must be
up on the device the route will be bound to.

Signed-off-by: Daniel Walter <dwalter@barracuda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index c850e5fb967c..86b1cb486903 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -84,6 +84,12 @@ extern int			ip6_route_add(struct fib6_config *cfg);
 extern int                      ip6_ins_rt(struct rt6_info *);
 extern int                      ip6_del_rt(struct rt6_info *);
 
+extern int                      ip6_route_get_saddr(struct net *net,
+                                                    struct rt6_info *rt,
+                                                    struct in6_addr *daddr,
+                                                    unsigned int prefs,
+                                                    struct in6_addr *saddr);
+
 extern struct rt6_info          *rt6_lookup(struct net *net,
                                             const struct in6_addr *daddr,
                                             const struct in6_addr *saddr,
@@ -141,6 +147,7 @@ struct rt6_rtnl_dump_arg {
 extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
 extern void rt6_ifdown(struct net *net, struct net_device *dev);
 extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
+extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
 
 
 /*