net: Add safe reverse SKB queue walkers.
Signed-off-by: David S. Miller <[email protected]>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index bf221d65..6e946da 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1801,6 +1801,15 @@
prefetch(skb->prev), (skb != (struct sk_buff *)(queue)); \
skb = skb->prev)
+#define skb_queue_reverse_walk_safe(queue, skb, tmp) \
+ for (skb = (queue)->prev, tmp = skb->prev; \
+ skb != (struct sk_buff *)(queue); \
+ skb = tmp, tmp = skb->prev)
+
+#define skb_queue_reverse_walk_from_safe(queue, skb, tmp) \
+ for (tmp = skb->prev; \
+ skb != (struct sk_buff *)(queue); \
+ skb = tmp, tmp = skb->prev)
static inline bool skb_has_frag_list(const struct sk_buff *skb)
{
