diff options
| -rw-r--r-- | net/core/fib_rules.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index f21c4d3aeae0..3bba291c6c32 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -568,7 +568,7 @@ int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, struct net *net = sock_net(skb->sk); struct fib_rule_hdr *frh = nlmsg_data(nlh); struct fib_rules_ops *ops = NULL; - struct fib_rule *rule, *tmp; + struct fib_rule *rule, *r; struct nlattr *tb[FRA_MAX+1]; struct fib_kuid_range range; int err = -EINVAL; @@ -668,16 +668,23 @@ int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, /* * Check if this rule is a target to any of them. If so, + * adjust to the next one with the same preference or * disable them. As this operation is eventually very - * expensive, it is only performed if goto rules have - * actually been added. + * expensive, it is only performed if goto rules, except + * current if it is goto rule, have actually been added. */ if (ops->nr_goto_rules > 0) { - list_for_each_entry(tmp, &ops->rules_list, list) { - if (rtnl_dereference(tmp->ctarget) == rule) { - RCU_INIT_POINTER(tmp->ctarget, NULL); + struct fib_rule *n; + + n = list_next_entry(rule, list); + if (&n->list == &ops->rules_list || n->pref != rule->pref) + n = NULL; + list_for_each_entry(r, &ops->rules_list, list) { + if (rtnl_dereference(r->ctarget) != rule) + continue; + rcu_assign_pointer(r->ctarget, n); + if (!n) ops->unresolved_rules++; - } } } |