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ip: introduce ip_is_fragment helper inline function

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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>
This commit is contained in:
Paul Gortmaker
2011-06-21 20:33:34 -07:00
committed by David S. Miller
parent f470e5ae34
commit 56f8a75c17
19 changed files with 27 additions and 23 deletions
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net/ipv4/ip_input.c
+2 -2
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@@ -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;
}