ip: introduce ip_is_fragment helper inline function

There are enough instances of this:

    iph->frag_off & htons(IP_MF | IP_OFFSET)

that a helper function is probably warranted.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index c8f48efc5fd3..073a9b01c40c 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -165,7 +165,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
                     (!sk->sk_bound_dev_if ||
                      sk->sk_bound_dev_if == dev->ifindex) &&
                     net_eq(sock_net(sk), dev_net(dev))) {
-                        if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
+                        if (ip_is_fragment(ip_hdr(skb))) {
                                 if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN))
                                         return 1;
                         }
@@ -256,7 +256,7 @@ int ip_local_deliver(struct sk_buff *skb)
          *      Reassemble IP fragments.
          */
 
-        if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
+        if (ip_is_fragment(ip_hdr(skb))) {
                 if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))
                         return 0;
         }