if (iph == NULL)
return -NF_DROP;
- /* Never happen */
- if (iph->frag_off & htons(IP_OFFSET)) {
- if (net_ratelimit()) {
- printk(KERN_ERR "ipv4_get_l4proto: Frag of proto %u\n",
- iph->protocol);
- }
+ /* Conntrack defragments packets, we might still see fragments
+ * inside ICMP packets though. */
+ if (iph->frag_off & htons(IP_OFFSET))
return -NF_DROP;
- }
*dataoff = nhoff + (iph->ihl << 2);
*protonum = iph->protocol;
static int ipv4_tuple_to_nfattr(struct sk_buff *skb,
const struct nf_conntrack_tuple *tuple)
{
- NFA_PUT(skb, CTA_IP_V4_SRC, sizeof(u_int32_t),
+ NLA_PUT(skb, CTA_IP_V4_SRC, sizeof(u_int32_t),
&tuple->src.u3.ip);
- NFA_PUT(skb, CTA_IP_V4_DST, sizeof(u_int32_t),
+ NLA_PUT(skb, CTA_IP_V4_DST, sizeof(u_int32_t),
&tuple->dst.u3.ip);
return 0;
-nfattr_failure:
+nla_put_failure:
return -1;
}
-static const size_t cta_min_ip[CTA_IP_MAX] = {
- [CTA_IP_V4_SRC-1] = sizeof(u_int32_t),
- [CTA_IP_V4_DST-1] = sizeof(u_int32_t),
+static const size_t cta_min_ip[CTA_IP_MAX+1] = {
+ [CTA_IP_V4_SRC] = sizeof(u_int32_t),
+ [CTA_IP_V4_DST] = sizeof(u_int32_t),
};
-static int ipv4_nfattr_to_tuple(struct nfattr *tb[],
+static int ipv4_nfattr_to_tuple(struct nlattr *tb[],
struct nf_conntrack_tuple *t)
{
- if (!tb[CTA_IP_V4_SRC-1] || !tb[CTA_IP_V4_DST-1])
+ if (!tb[CTA_IP_V4_SRC] || !tb[CTA_IP_V4_DST])
return -EINVAL;
if (nfattr_bad_size(tb, CTA_IP_MAX, cta_min_ip))
return -EINVAL;
- t->src.u3.ip = *(__be32 *)NFA_DATA(tb[CTA_IP_V4_SRC-1]);
- t->dst.u3.ip = *(__be32 *)NFA_DATA(tb[CTA_IP_V4_DST-1]);
+ t->src.u3.ip = *(__be32 *)nla_data(tb[CTA_IP_V4_SRC]);
+ t->dst.u3.ip = *(__be32 *)nla_data(tb[CTA_IP_V4_DST]);
return 0;
}
.get_optmin = SO_ORIGINAL_DST,
.get_optmax = SO_ORIGINAL_DST+1,
.get = &getorigdst,
+ .owner = THIS_MODULE,
};
struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
module_init(nf_conntrack_l3proto_ipv4_init);
module_exit(nf_conntrack_l3proto_ipv4_fini);
+
+void need_ipv4_conntrack(void)
+{
+ return;
+}
+EXPORT_SYMBOL_GPL(need_ipv4_conntrack);