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-rw-r--r--include/net/dst.h1
-rw-r--r--net/core/dst.c6
-rw-r--r--net/ipv6/route.c13
3 files changed, 12 insertions, 8 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index 7d15d238b6e..e12ddfb9eb1 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -77,6 +77,7 @@ struct dst_entry {
#define DST_NOPOLICY 0x0004
#define DST_NOHASH 0x0008
#define DST_NOCACHE 0x0010
+#define DST_NOCOUNT 0x0020
union {
struct dst_entry *next;
struct rtable __rcu *rt_next;
diff --git a/net/core/dst.c b/net/core/dst.c
index 9ccca038444..6135f367169 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -190,7 +190,8 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
dst->lastuse = jiffies;
dst->flags = flags;
dst->next = NULL;
- dst_entries_add(ops, 1);
+ if (!(flags & DST_NOCOUNT))
+ dst_entries_add(ops, 1);
return dst;
}
EXPORT_SYMBOL(dst_alloc);
@@ -243,7 +244,8 @@ again:
neigh_release(neigh);
}
- dst_entries_add(dst->ops, -1);
+ if (!(dst->flags & DST_NOCOUNT))
+ dst_entries_add(dst->ops, -1);
if (dst->ops->destroy)
dst->ops->destroy(dst);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index c2af4da074b..0ef1f086feb 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -228,9 +228,10 @@ static struct rt6_info ip6_blk_hole_entry_template = {
/* allocate dst with ip6_dst_ops */
static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops,
- struct net_device *dev)
+ struct net_device *dev,
+ int flags)
{
- struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, 0);
+ struct rt6_info *rt = dst_alloc(ops, dev, 0, 0, flags);
memset(&rt->rt6i_table, 0, sizeof(*rt) - sizeof(struct dst_entry));
@@ -1042,7 +1043,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
if (unlikely(idev == NULL))
return NULL;
- rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev);
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, dev, 0);
if (unlikely(rt == NULL)) {
in6_dev_put(idev);
goto out;
@@ -1206,7 +1207,7 @@ int ip6_route_add(struct fib6_config *cfg)
goto out;
}
- rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL);
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops, NULL, DST_NOCOUNT);
if (rt == NULL) {
err = -ENOMEM;
@@ -1726,7 +1727,7 @@ static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
{
struct net *net = dev_net(ort->rt6i_dev);
struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
- ort->dst.dev);
+ ort->dst.dev, 0);
if (rt) {
rt->dst.input = ort->dst.input;
@@ -2005,7 +2006,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
{
struct net *net = dev_net(idev->dev);
struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops,
- net->loopback_dev);
+ net->loopback_dev, 0);
struct neighbour *neigh;
if (rt == NULL) {