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Diffstat (limited to 'include/net/dst.h')
-rw-r--r--include/net/dst.h45
1 files changed, 11 insertions, 34 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index cfc043784166..f73611ec4017 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -31,9 +31,9 @@
struct sk_buff;
struct dst_entry {
+ struct net_device *dev;
struct rcu_head rcu_head;
struct dst_entry *child;
- struct net_device *dev;
struct dst_ops *ops;
unsigned long _metrics;
unsigned long expires;
@@ -51,13 +51,11 @@ struct dst_entry {
#define DST_HOST 0x0001
#define DST_NOXFRM 0x0002
#define DST_NOPOLICY 0x0004
-#define DST_NOHASH 0x0008
-#define DST_NOCACHE 0x0010
-#define DST_NOCOUNT 0x0020
-#define DST_FAKE_RTABLE 0x0040
-#define DST_XFRM_TUNNEL 0x0080
-#define DST_XFRM_QUEUE 0x0100
-#define DST_METADATA 0x0200
+#define DST_NOCOUNT 0x0008
+#define DST_FAKE_RTABLE 0x0010
+#define DST_XFRM_TUNNEL 0x0020
+#define DST_XFRM_QUEUE 0x0040
+#define DST_METADATA 0x0080
short error;
@@ -253,7 +251,7 @@ static inline void dst_hold(struct dst_entry *dst)
* __pad_to_align_refcnt declaration in struct dst_entry
*/
BUILD_BUG_ON(offsetof(struct dst_entry, __refcnt) & 63);
- atomic_inc(&dst->__refcnt);
+ WARN_ON(atomic_inc_not_zero(&dst->__refcnt) == 0);
}
static inline void dst_use(struct dst_entry *dst, unsigned long time)
@@ -278,6 +276,8 @@ static inline struct dst_entry *dst_clone(struct dst_entry *dst)
void dst_release(struct dst_entry *dst);
+void dst_release_immediate(struct dst_entry *dst);
+
static inline void refdst_drop(unsigned long refdst)
{
if (!(refdst & SKB_DST_NOREF))
@@ -334,10 +334,7 @@ static inline void skb_dst_force(struct sk_buff *skb)
*/
static inline bool dst_hold_safe(struct dst_entry *dst)
{
- if (dst->flags & DST_NOCACHE)
- return atomic_inc_not_zero(&dst->__refcnt);
- dst_hold(dst);
- return true;
+ return atomic_inc_not_zero(&dst->__refcnt);
}
/**
@@ -423,26 +420,8 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev, int initial_ref,
void dst_init(struct dst_entry *dst, struct dst_ops *ops,
struct net_device *dev, int initial_ref, int initial_obsolete,
unsigned short flags);
-void __dst_free(struct dst_entry *dst);
struct dst_entry *dst_destroy(struct dst_entry *dst);
-
-static inline void dst_free(struct dst_entry *dst)
-{
- if (dst->obsolete > 0)
- return;
- if (!atomic_read(&dst->__refcnt)) {
- dst = dst_destroy(dst);
- if (!dst)
- return;
- }
- __dst_free(dst);
-}
-
-static inline void dst_rcu_free(struct rcu_head *head)
-{
- struct dst_entry *dst = container_of(head, struct dst_entry, rcu_head);
- dst_free(dst);
-}
+void dst_dev_put(struct dst_entry *dst);
static inline void dst_confirm(struct dst_entry *dst)
{
@@ -505,8 +484,6 @@ static inline struct dst_entry *dst_check(struct dst_entry *dst, u32 cookie)
return dst;
}
-void dst_subsys_init(void);
-
/* Flags for xfrm_lookup flags argument. */
enum {
XFRM_LOOKUP_ICMP = 1 << 0,