[NET]: Treat the sign of the result of skb_headroom() consistently

In some places, the result of skb_headroom() is compared to an unsigned
integer, and in others, the result is compared to a signed integer.  Make
the comparisons consistent and correct.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index fd4e12f24270..94e49915a8c0 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -994,7 +994,7 @@ static inline int pskb_may_pull(struct sk_buff *skb, unsigned int len)
  *
  *      Return the number of bytes of free space at the head of an &sk_buff.
  */
-static inline int skb_headroom(const struct sk_buff *skb)
+static inline unsigned int skb_headroom(const struct sk_buff *skb)
 {
         return skb->data - skb->head;
 }
@@ -1347,7 +1347,7 @@ static inline struct sk_buff *netdev_alloc_skb(struct net_device *dev,
  *      Returns true if modifying the header part of the cloned buffer
  *      does not requires the data to be copied.
  */
-static inline int skb_clone_writable(struct sk_buff *skb, int len)
+static inline int skb_clone_writable(struct sk_buff *skb, unsigned int len)
 {
         return !skb_header_cloned(skb) &&
                skb_headroom(skb) + len <= skb->hdr_len;