[NET] gso: Add skb_is_gso

This patch adds the wrapper function skb_is_gso which can be used instead
of directly testing skb_shinfo(skb)->gso_size.  This makes things a little
nicer and allows us to change the primary key for indicating whether an skb
is GSO (if we ever want to do that).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 3 deletions

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index ca0e714613fb..7c9f9a6421b8 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -209,7 +209,7 @@ static inline int ip_finish_output(struct sk_buff *skb)
                 return dst_output(skb);
         }
 #endif
-        if (skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->gso_size)
+        if (skb->len > dst_mtu(skb->dst) && !skb_is_gso(skb))
                 return ip_fragment(skb, ip_finish_output2);
         else
                 return ip_finish_output2(skb);
@@ -1095,7 +1095,7 @@ ssize_t	ip_append_page(struct sock *sk, struct page *page,
         while (size > 0) {
                 int i;
 
-                if (skb_shinfo(skb)->gso_size)
+                if (skb_is_gso(skb))
                         len = size;
                 else {
 
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 193363e22932..d16f863cf687 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -134,7 +134,7 @@ static int xfrm4_output_finish(struct sk_buff *skb)
         }
 #endif
 
-        if (!skb_shinfo(skb)->gso_size)
+        if (!skb_is_gso(skb))
                 return xfrm4_output_finish2(skb);
 
         skb->protocol = htons(ETH_P_IP);