ipv4: Elide fib_validate_source() completely when possible.

[deliverable/linux.git] / net / ipv4 / fib_rules.c

diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 2d043f71ef7051f606f133a637dd9de1862644b3..b23fd952c84fe06bc9126916adaca7a4677ea55a 100644 (file)
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -169,8 +169,11 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
                rule4->dst = nla_get_be32(tb[FRA_DST]);
 
 #ifdef CONFIG_IP_ROUTE_CLASSID
-       if (tb[FRA_FLOW])
+       if (tb[FRA_FLOW]) {
                rule4->tclassid = nla_get_u32(tb[FRA_FLOW]);
+               if (rule4->tclassid)
+                       fib_num_tclassid_users++;
+       }
 #endif
 
        rule4->src_len = frh->src_len;
@@ -184,6 +187,16 @@ errout:
        return err;
 }
 
+static void fib4_rule_delete(struct fib_rule *rule)
+{
+#ifdef CONFIG_IP_ROUTE_CLASSID
+       struct fib4_rule *rule4 = (struct fib4_rule *) rule;
+
+       if (rule4->tclassid)
+               fib_num_tclassid_users--;
+#endif
+}
+
 static int fib4_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
                             struct nlattr **tb)
 {
@@ -256,6 +269,7 @@ static const struct fib_rules_ops __net_initdata fib4_rules_ops_template = {
        .action         = fib4_rule_action,
        .match          = fib4_rule_match,
        .configure      = fib4_rule_configure,
+       .delete         = fib4_rule_delete,
        .compare        = fib4_rule_compare,
        .fill           = fib4_rule_fill,
        .default_pref   = fib_default_rule_pref,