[SKB]: Introduce skb_queue_walk_safe()

This patch provides a method for walking skb lists while inserting or
removing skbs from the list.

Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 2694cb3ca763..253a2b9be9d6 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1471,6 +1471,11 @@ static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)
                      prefetch(skb->next), (skb != (struct sk_buff *)(queue));   \
                      skb = skb->next)
 
+#define skb_queue_walk_safe(queue, skb, tmp)                                    \
+                for (skb = (queue)->next, tmp = skb->next;                      \
+                     skb != (struct sk_buff *)(queue);                          \
+                     skb = tmp, tmp = skb->next)
+
 #define skb_queue_reverse_walk(queue, skb) \
                 for (skb = (queue)->prev;                                       \
                      prefetch(skb->prev), (skb != (struct sk_buff *)(queue));   \