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[net-next,01/12] net: add dst_get_noref and refdst_ptr helpers

Message ID 1362559342-18784-2-git-send-email-ja@ssi.bg
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Julian Anastasov March 6, 2013, 8:42 a.m. UTC 
Needed to hide refdst details.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
---
 include/net/dst.h |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)
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Patch

diff --git a/include/net/dst.h b/include/net/dst.h
index 853cda1..967f42a 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -264,10 +264,22 @@  static inline struct dst_entry *dst_clone(struct dst_entry *dst)
 
 extern void dst_release(struct dst_entry *dst);
 
+/* Get noref version of dst */
+static inline struct dst_entry *dst_get_noref(struct dst_entry *dst)
+{
+	return (struct dst_entry *) ((unsigned long) dst | SKB_DST_NOREF);
+}
+
+/* Return dst pointer from refdst */
+static inline struct dst_entry *refdst_ptr(unsigned long refdst)
+{
+	return (struct dst_entry *)(refdst & SKB_DST_PTRMASK);
+}
+
 static inline void refdst_drop(unsigned long refdst)
 {
 	if (!(refdst & SKB_DST_NOREF))
-		dst_release((struct dst_entry *)(refdst & SKB_DST_PTRMASK));
+		dst_release(refdst_ptr(refdst));
 }
 
 /**