These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / net / ipv6 / fib6_rules.c

diff --git a/kernel/net/ipv6/fib6_rules.c b/kernel/net/ipv6/fib6_rules.c
index 2367a16..ed33abf 100644 (file)
--- a/kernel/net/ipv6/fib6_rules.c
+++ b/kernel/net/ipv6/fib6_rules.c
@@ -32,6 +32,7 @@ struct fib6_rule {
 struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
                                   int flags, pol_lookup_t lookup)
 {
+       struct rt6_info *rt;
        struct fib_lookup_arg arg = {
                .lookup_ptr = lookup,
                .flags = FIB_LOOKUP_NOREF,
@@ -40,11 +41,21 @@ struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
        fib_rules_lookup(net->ipv6.fib6_rules_ops,
                         flowi6_to_flowi(fl6), flags, &arg);
 
-       if (arg.result)
-               return arg.result;
+       rt = arg.result;
 
-       dst_hold(&net->ipv6.ip6_null_entry->dst);
-       return &net->ipv6.ip6_null_entry->dst;
+       if (!rt) {
+               dst_hold(&net->ipv6.ip6_null_entry->dst);
+               return &net->ipv6.ip6_null_entry->dst;
+       }
+
+       if (rt->rt6i_flags & RTF_REJECT &&
+           rt->dst.error == -EAGAIN) {
+               ip6_rt_put(rt);
+               rt = net->ipv6.ip6_null_entry;
+               dst_hold(&rt->dst);
+       }
+
+       return &rt->dst;
 }
 
 static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
@@ -258,11 +269,6 @@ nla_put_failure:
        return -ENOBUFS;
 }
 
-static u32 fib6_rule_default_pref(struct fib_rules_ops *ops)
-{
-       return 0x3FFF;
-}
-
 static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
 {
        return nla_total_size(16) /* dst */
@@ -279,7 +285,6 @@ static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = {
        .configure              = fib6_rule_configure,
        .compare                = fib6_rule_compare,
        .fill                   = fib6_rule_fill,
-       .default_pref           = fib6_rule_default_pref,
        .nlmsg_payload          = fib6_rule_nlmsg_payload,
        .nlgroup                = RTNLGRP_IPV6_RULE,
        .policy                 = fib6_rule_policy,