ipv6: Add IPv6 multipath notification for route delete

If all the nexthops of a multipath route are being deleted, send one
notification for the entire route, instead of one per-nexthop.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index da504d36ce54..c4d285fe0adc 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3718,6 +3718,12 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg)
                                 info->skip_notify = 1;
                 }
 
+                info->skip_notify_kernel = 1;
+                call_fib6_multipath_entry_notifiers(net,
+                                                    FIB_EVENT_ENTRY_DEL,
+                                                    rt,
+                                                    rt->fib6_nsiblings,
+                                                    NULL);
                 list_for_each_entry_safe(sibling, next_sibling,
                                          &rt->fib6_siblings,
                                          fib6_siblings) {