[patch net-next 12/21] ipv6: fib: Unlink replaced routes from their nodes

[Jiri Pirko]

From: Ido Schimmel <ido...@mellanox.com>

When a route is deleted its node pointer is set to NULL to indicate it's
no longer linked to its node. Do the same for routes that are replaced.

This will later allow us to test if a route is still in the FIB by
checking its node pointer instead of its reference count.

Signed-off-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 net/ipv6/ip6_fib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index fa27905..fe193b4 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1019,6 +1019,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct 
rt6_info *rt,
                        fn->fn_flags |= RTN_RTINFO;
                }
                nsiblings = iter->rt6i_nsiblings;
+               iter->rt6i_node = NULL;
                fib6_purge_rt(iter, fn, info->nl_net);
                rt6_release(iter);
 
@@ -1031,6 +1032,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct 
rt6_info *rt,
                                        break;
                                if (rt6_qualify_for_ecmp(iter)) {
                                        *ins = iter->dst.rt6_next;
+                                       iter->rt6i_node = NULL;
                                        fib6_purge_rt(iter, fn, info->nl_net);
                                        rt6_release(iter);
                                        nsiblings--;
-- 
2.9.3