Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

[~andy/linux] / net / ipv6 / route.c

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8e80fd279100d7d18d111eff1be73f10fdd6eeaf..854e4018d205c826032633ce2641cbc1af2c057a 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -226,7 +226,7 @@ static struct rt6_info ip6_null_entry_template = {
        .dst = {
                .__refcnt       = ATOMIC_INIT(1),
                .__use          = 1,
-               .obsolete       = -1,
+               .obsolete       = DST_OBSOLETE_FORCE_CHK,
                .error          = -ENETUNREACH,
                .input          = ip6_pkt_discard,
                .output         = ip6_pkt_discard_out,
@@ -246,7 +246,7 @@ static struct rt6_info ip6_prohibit_entry_template = {
        .dst = {
                .__refcnt       = ATOMIC_INIT(1),
                .__use          = 1,
-               .obsolete       = -1,
+               .obsolete       = DST_OBSOLETE_FORCE_CHK,
                .error          = -EACCES,
                .input          = ip6_pkt_prohibit,
                .output         = ip6_pkt_prohibit_out,
@@ -261,7 +261,7 @@ static struct rt6_info ip6_blk_hole_entry_template = {
        .dst = {
                .__refcnt       = ATOMIC_INIT(1),
                .__use          = 1,
-               .obsolete       = -1,
+               .obsolete       = DST_OBSOLETE_FORCE_CHK,
                .error          = -EINVAL,
                .input          = dst_discard,
                .output         = dst_discard,
@@ -281,13 +281,14 @@ static inline struct rt6_info *ip6_dst_alloc(struct net *net,
                                             struct fib6_table *table)
 {
        struct rt6_info *rt = dst_alloc(&net->ipv6.ip6_dst_ops, dev,
-                                       0, DST_OBSOLETE_NONE, flags);
+                                       0, DST_OBSOLETE_FORCE_CHK, flags);
 
        if (rt) {
                struct dst_entry *dst = &rt->dst;
 
                memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
                rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);
+               rt->rt6i_genid = rt_genid(net);
        }
        return rt;
 }
@@ -1031,6 +1032,13 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
 
        rt = (struct rt6_info *) dst;
 
+       /* All IPV6 dsts are created with ->obsolete set to the value
+        * DST_OBSOLETE_FORCE_CHK which forces validation calls down
+        * into this function always.
+        */
+       if (rt->rt6i_genid != rt_genid(dev_net(rt->dst.dev)))
+               return NULL;
+
        if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie)) {
                if (rt->rt6i_peer_genid != rt6_peer_genid()) {
                        if (!rt6_has_peer(rt))
@@ -1397,8 +1405,6 @@ int ip6_route_add(struct fib6_config *cfg)
                goto out;
        }
 
-       rt->dst.obsolete = -1;
-
        if (cfg->fc_flags & RTF_EXPIRES)
                rt6_set_expires(rt, jiffies +
                                clock_t_to_jiffies(cfg->fc_expires));
@@ -2080,7 +2086,6 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
        rt->dst.input = ip6_input;
        rt->dst.output = ip6_output;
        rt->rt6i_idev = idev;
-       rt->dst.obsolete = -1;
 
        rt->rt6i_flags = RTF_UP | RTF_NONEXTHOP;
        if (anycast)