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-rw-r--r--net/core/dst.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/net/core/dst.c b/net/core/dst.c
index 7deef48..fe03266 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -259,6 +259,16 @@ again:
return NULL;
}
+void dst_release(struct dst_entry *dst)
+{
+ if (dst) {
+ WARN_ON(atomic_read(&dst->__refcnt) < 1);
+ smp_mb__before_atomic_dec();
+ atomic_dec(&dst->__refcnt);
+ }
+}
+EXPORT_SYMBOL(dst_release);
+
/* Dirty hack. We did it in 2.2 (in __dst_free),
* we have _very_ good reasons not to repeat
* this mistake in 2.3, but we have no choice
@@ -279,7 +289,7 @@ static inline void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
if (!unregister) {
dst->input = dst->output = dst_discard;
} else {
- dst->dev = dst->dev->nd_net->loopback_dev;
+ dst->dev = dev_net(dst->dev)->loopback_dev;
dev_hold(dst->dev);
dev_put(dev);
if (dst->neighbour && dst->neighbour->dev == dev) {
@@ -295,9 +305,6 @@ static int dst_dev_event(struct notifier_block *this, unsigned long event, void
struct net_device *dev = ptr;
struct dst_entry *dst, *last = NULL;
- if (dev->nd_net != &init_net)
- return NOTIFY_DONE;
-
switch (event) {
case NETDEV_UNREGISTER:
case NETDEV_DOWN:
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