[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>
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index 2fcb924..48fdd9e 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -63,19 +63,20 @@
}
/* Returns new sk_buff, or NULL */
-static struct sk_buff *
-nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
+static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
{
+ int err;
+
skb_orphan(skb);
local_bh_disable();
- skb = ip_defrag(skb, user);
+ err = ip_defrag(skb, user);
local_bh_enable();
- if (skb)
+ if (!err)
ip_send_check(ip_hdr(skb));
- return skb;
+ return err;
}
static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
@@ -148,11 +149,10 @@
/* Gather fragments. */
if (ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)) {
- *pskb = nf_ct_ipv4_gather_frags(*pskb,
- hooknum == NF_IP_PRE_ROUTING ?
- IP_DEFRAG_CONNTRACK_IN :
- IP_DEFRAG_CONNTRACK_OUT);
- if (!*pskb)
+ if (nf_ct_ipv4_gather_frags(*pskb,
+ hooknum == NF_IP_PRE_ROUTING ?
+ IP_DEFRAG_CONNTRACK_IN :
+ IP_DEFRAG_CONNTRACK_OUT))
return NF_STOLEN;
}
return NF_ACCEPT;