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Diffstat (limited to 'net/ipv6/ip6_fib.c')
-rw-r--r--net/ipv6/ip6_fib.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 49884f96232b..87f47bc55c5e 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1151,8 +1151,24 @@ add:
err = call_fib6_entry_notifiers(info->nl_net,
FIB_EVENT_ENTRY_ADD,
rt, extack);
- if (err)
+ if (err) {
+ struct fib6_info *sibling, *next_sibling;
+
+ /* If the route has siblings, then it first
+ * needs to be unlinked from them.
+ */
+ if (!rt->fib6_nsiblings)
+ return err;
+
+ list_for_each_entry_safe(sibling, next_sibling,
+ &rt->fib6_siblings,
+ fib6_siblings)
+ sibling->fib6_nsiblings--;
+ rt->fib6_nsiblings = 0;
+ list_del_init(&rt->fib6_siblings);
+ rt6_multipath_rebalance(next_sibling);
return err;
+ }
}
rcu_assign_pointer(rt->fib6_next, iter);