#ifdef CONFIG_XFRM
static void nat_decode_session(struct sk_buff *skb, struct flowi *fl)
{
- struct nf_conn *ct;
- struct nf_conntrack_tuple *t;
+ const struct nf_conn *ct;
+ const struct nf_conntrack_tuple *t;
enum ip_conntrack_info ctinfo;
enum ip_conntrack_dir dir;
unsigned long statusbit;
if (ct->status & statusbit) {
fl->fl4_dst = t->dst.u3.ip;
if (t->dst.protonum == IPPROTO_TCP ||
- t->dst.protonum == IPPROTO_UDP)
+ t->dst.protonum == IPPROTO_UDP ||
+ t->dst.protonum == IPPROTO_UDPLITE ||
+ t->dst.protonum == IPPROTO_DCCP ||
+ t->dst.protonum == IPPROTO_SCTP)
fl->fl_ip_dport = t->dst.u.tcp.port;
}
if (ct->status & statusbit) {
fl->fl4_src = t->src.u3.ip;
if (t->dst.protonum == IPPROTO_TCP ||
- t->dst.protonum == IPPROTO_UDP)
+ t->dst.protonum == IPPROTO_UDP ||
+ t->dst.protonum == IPPROTO_UDPLITE ||
+ t->dst.protonum == IPPROTO_DCCP ||
+ t->dst.protonum == IPPROTO_SCTP)
fl->fl_ip_sport = t->src.u.tcp.port;
}
}
have dropped it. Hence it's the user's responsibilty to
packet filter it out, or implement conntrack/NAT for that
protocol. 8) --RR */
- if (!ct) {
- /* Exception: ICMP redirect to new connection (not in
- hash table yet). We must not let this through, in
- case we're doing NAT to the same network. */
- if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
- struct icmphdr _hdr, *hp;
-
- hp = skb_header_pointer(skb, ip_hdrlen(skb),
- sizeof(_hdr), &_hdr);
- if (hp != NULL &&
- hp->type == ICMP_REDIRECT)
- return NF_DROP;
- }
+ if (!ct)
return NF_ACCEPT;
- }
/* Don't try to NAT if this packet is not conntracked */
if (ct == &nf_conntrack_untracked)
nat = nfct_nat(ct);
if (!nat) {
+ /* NAT module was loaded late. */
+ if (nf_ct_is_confirmed(ct))
+ return NF_ACCEPT;
nat = nf_ct_ext_add(ct, NF_CT_EXT_NAT, GFP_ATOMIC);
if (nat == NULL) {
pr_debug("failed to add NAT extension\n");
if (!nf_nat_initialized(ct, maniptype)) {
unsigned int ret;
- if (unlikely(nf_ct_is_confirmed(ct)))
- /* NAT module was loaded late */
- ret = alloc_null_binding_confirmed(ct, hooknum);
- else if (hooknum == NF_INET_LOCAL_IN)
+ if (hooknum == NF_INET_LOCAL_IN)
/* LOCAL_IN hook doesn't have a chain! */
ret = alloc_null_binding(ct, hooknum);
else
int (*okfn)(struct sk_buff *))
{
#ifdef CONFIG_XFRM
- struct nf_conn *ct;
+ const struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
#endif
unsigned int ret;
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
- struct nf_conn *ct;
+ const struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
unsigned int ret;