net: skb_peek()/skb_peek_tail() cleanups

remove useless casts and rename variables for less confusion.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 8 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 2c75e98953b2..988fc49667b1 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -883,10 +883,11 @@ static inline struct sk_buff *skb_unshare(struct sk_buff *skb,
  */
 static inline struct sk_buff *skb_peek(const struct sk_buff_head *list_)
 {
-        struct sk_buff *list = ((const struct sk_buff *)list_)->next;
-        if (list == (struct sk_buff *)list_)
-                list = NULL;
-        return list;
+        struct sk_buff *skb = list_->next;
+
+        if (skb == (struct sk_buff *)list_)
+                skb = NULL;
+        return skb;
 }
 
 /**
@@ -902,6 +903,7 @@ static inline struct sk_buff *skb_peek_next(struct sk_buff *skb,
                 const struct sk_buff_head *list_)
 {
         struct sk_buff *next = skb->next;
+
         if (next == (struct sk_buff *)list_)
                 next = NULL;
         return next;
@@ -922,10 +924,12 @@ static inline struct sk_buff *skb_peek_next(struct sk_buff *skb,
  */
 static inline struct sk_buff *skb_peek_tail(const struct sk_buff_head *list_)
 {
-        struct sk_buff *list = ((const struct sk_buff *)list_)->prev;
-        if (list == (struct sk_buff *)list_)
-                list = NULL;
-        return list;
+        struct sk_buff *skb = list_->prev;
+
+        if (skb == (struct sk_buff *)list_)
+                skb = NULL;
+        return skb;
+
 }
 
 /**