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, 2 insertions, 0 deletions

diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index bc3cde0a810c..98348d53b2b6 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -42,6 +42,7 @@ struct fib6_config {
 
         struct in6_addr fc_dst;
         struct in6_addr fc_src;
+        struct in6_addr fc_prefsrc;
         struct in6_addr fc_gateway;
 
         unsigned long   fc_expires;
@@ -107,6 +108,7 @@ struct rt6_info {
         struct rt6key                   rt6i_dst ____cacheline_aligned_in_smp;
         u32                             rt6i_flags;
         struct rt6key                   rt6i_src;
+        struct rt6key                   rt6i_prefsrc;
         u32                             rt6i_metric;
         u32                             rt6i_peer_genid;