[IPV4]: Change ip_defrag to return an integer

Now that ip_frag always returns the packet given to it on input, we can
change it to return an integer indicating error instead.  This patch does
that and updates all its callers accordingly.

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

1 files changed, 2 insertions, 4 deletions

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 41d8964591e7..8f75e43ad3b3 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -172,8 +172,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
                     (!sk->sk_bound_dev_if ||
                      sk->sk_bound_dev_if == skb->dev->ifindex)) {
                         if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-                                skb = ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN);
-                                if (skb == NULL) {
+                                if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN)) {
                                         read_unlock(&ip_ra_lock);
                                         return 1;
                                 }
@@ -265,8 +264,7 @@ int ip_local_deliver(struct sk_buff *skb)
          */
 
         if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
-                skb = ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER);
-                if (!skb)
+                if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))
                         return 0;
         }