int nf_nat_rule_find(struct sk_buff *skb,
unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,
struct nf_conn *ct)
{
struct net *net = nf_ct_net(ct);
int ret;
#ifdef CONFIG_ATHRS_HW_NAT
void (*athr_ct_check_layer2if)(struct sk_buff *, struct nf_conn *, int nf_nat_manip_type);
#endif
ret = ipt_do_table(skb, hooknum, in, out, net->ipv4.nat_table);
#ifdef CONFIG_ATHRS_HW_NAT
if (athr_nat_sw_ops) {
athr_ct_check_layer2if = rcu_dereference(athr_nat_sw_ops->check_layer2if);
if (athr_ct_check_layer2if)
athr_ct_check_layer2if(skb, ct, HOOK2MANIP(hooknum));
}
#endif
if (ret == NF_ACCEPT) {
if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))
/* NUL mapping */
ret = alloc_null_binding(ct, hooknum);
}
return ret;
}
static unsigned int nf_nat_rule_find(struct sk_buff *skb, unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,
struct nf_conn *ct)
{
struct net *net = nf_ct_net(ct);
unsigned int ret;
ret = ipt_do_table(skb, hooknum, in, out, net->ipv4.nat_table);
if (ret == NF_ACCEPT) {
if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))
ret = alloc_null_binding(ct, hooknum);
}
return ret;
}
int nf_nat_rule_find(struct sk_buff *skb,
unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,
struct nf_conn *ct)
{
struct net *net = nf_ct_net(ct);
int ret;
ret = ipt_do_table(skb, hooknum, in, out, net->ipv4.nat_table);
if (ret == NF_ACCEPT) {
/*
* Reason: Hairpin translation for TCP/UDP not working
* Modified: Ubicom
* Date: 2009.11.18
*/
if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum))) {
#if defined(CONFIG_IP_NF_TARGET_SNATP2P)
if ((HOOK2MANIP(hooknum) == IP_NAT_MANIP_DST)){
struct nf_conntrack_tuple reply_tuple, new_tuple;
nf_ct_invert_tuplepr(&reply_tuple,
&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
if (find_appropriate_p2p_dst(net, &reply_tuple, &new_tuple)) {
struct nf_nat_range range;
/* This must be a fresh one. */
BUG_ON(ct->status & IPS_SNATP2P_DONE_MASK);
ct->status |= IPS_SNATP2P_DST;
range.flags = (IP_NAT_RANGE_MAP_IPS);
//range.flags = (IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED);
//range.min = range.max = new_tuple.dst.u;
range.min_ip = range.max_ip = new_tuple.dst.u3.ip;
ret = nf_nat_setup_info(ct, &range, IP_NAT_MANIP_DST);
range.min_ip = range.max_ip = new_tuple.src.u3.ip;
ret = nf_nat_setup_info(ct, &range, IP_NAT_MANIP_SRC);
}
}
if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))
#endif
/* NUL mapping */
ret = alloc_null_binding(ct, hooknum);
}
}
return ret;
}
int nf_nat_rule_find(struct sk_buff *skb,
unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,
struct nf_conn *ct)
{
int ret;
ret = ipt_do_table(skb, hooknum, in, out, &nat_table);
if (ret == NF_ACCEPT) {
if (!nf_nat_initialized(ct, HOOK2MANIP(hooknum)))
/* NUL mapping */
ret = alloc_null_binding(ct, hooknum);
}
return ret;
}
int ip_nat_rule_find(struct sk_buff **pskb,
unsigned int hooknum,
const struct net_device *in,
const struct net_device *out,
struct ip_conntrack *ct,
struct ip_nat_info *info)
{
int ret;
ret = ipt_do_table(pskb, hooknum, in, out, &nat_table, NULL);
if (ret == NF_ACCEPT) {
if (!ip_nat_initialized(ct, HOOK2MANIP(hooknum)))
/* NUL mapping */
ret = alloc_null_binding(ct, info, hooknum);
}
return ret;
}
static unsigned int
ip_nat_fn(unsigned int hooknum,
struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct ip_conntrack *ct;
enum ip_conntrack_info ctinfo;
struct ip_nat_info *info;
/* maniptype == SRC for postrouting. */
enum ip_nat_manip_type maniptype = HOOK2MANIP(hooknum);
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and ip_nat_out protects post-routing. */
IP_NF_ASSERT(!((*pskb)->nh.iph->frag_off
& htons(IP_MF|IP_OFFSET)));
(*pskb)->nfcache |= NFC_UNKNOWN;
/* If we had a hardware checksum before, it's now invalid */
if ((*pskb)->ip_summed == CHECKSUM_HW)
if (skb_checksum_help(*pskb, (out == NULL)))
return NF_DROP;
ct = ip_conntrack_get(*pskb, &ctinfo);
/* Can't track? It's not due to stress, or conntrack would
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 ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
struct icmphdr _hdr, *hp;
hp = skb_header_pointer(*pskb,
(*pskb)->nh.iph->ihl*4,
sizeof(_hdr), &_hdr);
if (hp != NULL &&
hp->type == ICMP_REDIRECT)
return NF_DROP;
}
return NF_ACCEPT;
}
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
if (!icmp_reply_translation(pskb, ct, maniptype,
CTINFO2DIR(ctinfo)))
return NF_DROP;
else
return NF_ACCEPT;
}
/* Fall thru... (Only ICMPs can be IP_CT_IS_REPLY) */
case IP_CT_NEW:
info = &ct->nat.info;
/* Seen it before? This can happen for loopback, retrans,
or local packets.. */
if (!ip_nat_initialized(ct, maniptype)) {
unsigned int ret;
/* LOCAL_IN hook doesn't have a chain! */
if (hooknum == NF_IP_LOCAL_IN)
ret = alloc_null_binding(ct, info, hooknum);
else
ret = ip_nat_rule_find(pskb, hooknum,
in, out, ct,
info);
if (ret != NF_ACCEPT) {
return ret;
}
} else
DEBUGP("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
break;
default:
/* ESTABLISHED */
IP_NF_ASSERT(ctinfo == IP_CT_ESTABLISHED
|| ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
info = &ct->nat.info;
}
IP_NF_ASSERT(info);
return nat_packet(ct, ctinfo, hooknum, pskb);
}
static unsigned int
nf_nat_fn(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
struct nf_conn_nat *nat;
/* maniptype == SRC for postrouting. */
enum nf_nat_manip_type maniptype = HOOK2MANIP(hooknum);
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and nf_nat_out protects post-routing. */
NF_CT_ASSERT(!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)));
ct = nf_ct_get(skb, &ctinfo);
/* Can't track? It's not due to stress, or conntrack would
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)
return NF_ACCEPT;
/* Don't try to NAT if this packet is not conntracked */
if (ct == &nf_conntrack_untracked)
return NF_ACCEPT;
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");
return NF_ACCEPT;
}
}
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
if (!nf_nat_icmp_reply_translation(ct, ctinfo,
hooknum, skb))
return NF_DROP;
else
return NF_ACCEPT;
}
/* Fall thru... (Only ICMPs can be IP_CT_IS_REPLY) */
case IP_CT_NEW:
/* Seen it before? This can happen for loopback, retrans,
or local packets.. */
if (!nf_nat_initialized(ct, maniptype)) {
unsigned int ret;
if (hooknum == NF_INET_LOCAL_IN)
/* LOCAL_IN hook doesn't have a chain! */
ret = alloc_null_binding(ct, hooknum);
else
ret = nf_nat_rule_find(skb, hooknum, in, out,
ct);
if (ret != NF_ACCEPT) {
return ret;
}
} else
pr_debug("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
break;
default:
/* ESTABLISHED */
NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
}
return nf_nat_packet(ct, ctinfo, hooknum, skb);
}
static unsigned int
nf_nat_fn(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
struct nf_conn_nat *nat;
/* maniptype == SRC for postrouting. */
enum nf_nat_manip_type maniptype = HOOK2MANIP(hooknum);
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and nf_nat_out protects post-routing. */
NF_CT_ASSERT(!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)));
ct = nf_ct_get(skb, &ctinfo);
/* Can't track? It's not due to stress, or conntrack would
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;
}
return NF_ACCEPT;
}
/* Don't try to NAT if this packet is not conntracked */
if (ct == &nf_conntrack_untracked)
return NF_ACCEPT;
nat = nfct_nat(ct);
if (!nat)
return NF_ACCEPT;
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
if (!nf_nat_icmp_reply_translation(ct, ctinfo,
hooknum, skb))
return NF_DROP;
else
return NF_ACCEPT;
}
/* Fall thru... (Only ICMPs can be IP_CT_IS_REPLY) */
case IP_CT_NEW:
/* Seen it before? This can happen for loopback, retrans,
or local packets.. */
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_IP_LOCAL_IN)
/* LOCAL_IN hook doesn't have a chain! */
ret = alloc_null_binding(ct, hooknum);
else
ret = nf_nat_rule_find(skb, hooknum, in, out,
ct);
if (ret != NF_ACCEPT) {
return ret;
}
ipt_cone_place_in_hashes(ct);
} else
DEBUGP("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
break;
default:
/* ESTABLISHED */
NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
}
return nf_nat_packet(ct, ctinfo, hooknum, skb);
}
static unsigned int
ip_nat_fn(unsigned int hooknum,
struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct ip_conntrack *ct;
enum ip_conntrack_info ctinfo;
struct ip_nat_info *info;
/* maniptype == SRC for postrouting. */
enum ip_nat_manip_type maniptype = HOOK2MANIP(hooknum);
/* jimmy added 20080324 */
struct sip_rtp_binding *sip_rtp_binding_tmp = NULL;
/* --------------------------------- */
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and ip_nat_out protects post-routing. */
IP_NF_ASSERT(!((*pskb)->nh.iph->frag_off
& htons(IP_MF|IP_OFFSET)));
/* If we had a hardware checksum before, it's now invalid */
if ((*pskb)->ip_summed == CHECKSUM_HW)
if (skb_checksum_help(*pskb, (out == NULL)))
return NF_DROP;
ct = ip_conntrack_get(*pskb, &ctinfo);
/* Can't track? It's not due to stress, or conntrack would
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 ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
struct icmphdr _hdr, *hp;
hp = skb_header_pointer(*pskb,
(*pskb)->nh.iph->ihl*4,
sizeof(_hdr), &_hdr);
if (hp != NULL &&
hp->type == ICMP_REDIRECT)
return NF_DROP;
}
return NF_ACCEPT;
}
/* Don't try to NAT if this packet is not conntracked */
if (ct == &ip_conntrack_untracked)
return NF_ACCEPT;
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
if (!ip_nat_icmp_reply_translation(pskb, ct, maniptype,
CTINFO2DIR(ctinfo)))
return NF_DROP;
else
return NF_ACCEPT;
}
/* Fall thru... (Only ICMPs can be IP_CT_IS_REPLY) */
case IP_CT_NEW:
info = &ct->nat.info;
/* Seen it before? This can happen for loopback, retrans,
or local packets.. */
if (!ip_nat_initialized(ct, maniptype)) {
unsigned int ret;
if (unlikely(is_confirmed(ct)))
/* NAT module was loaded late */
ret = alloc_null_binding_confirmed(ct, info,
hooknum);
else if (hooknum == NF_IP_LOCAL_IN)
/* LOCAL_IN hook doesn't have a chain! */
ret = alloc_null_binding(ct, info, hooknum);
else{
ret = ip_nat_rule_find(pskb, hooknum,
in, out, ct,
info);
/* jimmy added 20080324 */
if((hooknum == NF_IP_POST_ROUTING) && ((*pskb)->nh.iph->protocol == IPPROTO_UDP)){
sip_rtp_binding_tmp = sip_rtp_binding_find(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip,
ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip);
if(sip_rtp_binding_tmp){
/* jimmy added 20080328, for avoid sip pattern 100 run through in */
if( sip_rtp_binding_tmp->wan_uac_port &&
(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u.all == sip_rtp_binding_tmp->wan_uac_port)){
/* ----------------------------------------------- */
if(sip_rtp_binding_tmp->router_port && sip_rtp_binding_tmp->router_ip &&
(sip_rtp_binding_tmp->router_ip == ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip) &&
(sip_rtp_binding_tmp->router_port != ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.all)){
write_lock_bh(&ip_conntrack_lock);
ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.all = sip_rtp_binding_tmp->router_port;
write_unlock_bh(&ip_conntrack_lock);
DEBUGP("After modified conntrack for sip incoming conntrack hash, this ct are\n");
DEBUGP("[IP_CT_DIR_REPLY] : %u %u.%u.%u.%u:%hu -> %u.%u.%u.%u:%hu\n",
ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.protonum,
NIPQUAD(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip), ntohs(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u.all),
NIPQUAD(ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip), ntohs(ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.all));
DEBUGP("[IP_CT_DIR_ORIGINAL] : %u %u.%u.%u.%u:%hu -> %u.%u.%u.%u:%hu\n",
ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
NIPQUAD(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip), ntohs(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.all),
NIPQUAD(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip), ntohs(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u.all));
}
/* jimmy added 20080328, for avoid sip pattern 100 */
}
/* ----------------------------------------------- */
}
}
/* ---------------------- */
}
if (ret != NF_ACCEPT) {
return ret;
}
} else
DEBUGP("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
break;
default:
/* ESTABLISHED */
IP_NF_ASSERT(ctinfo == IP_CT_ESTABLISHED
|| ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
info = &ct->nat.info;
}
IP_NF_ASSERT(info);
return ip_nat_packet(ct, ctinfo, hooknum, pskb);
}
static unsigned int
nf_nat_fn(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
struct nf_conn_nat *nat;
enum nf_nat_manip_type maniptype = HOOK2MANIP(hooknum);
NF_CT_ASSERT(!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)));
ct = nf_ct_get(skb, &ctinfo);
if (!ct)
return NF_ACCEPT;
if (ct == &nf_conntrack_untracked)
return NF_ACCEPT;
nat = nfct_nat(ct);
if (!nat) {
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");
return NF_ACCEPT;
}
}
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
if (ip_hdr(skb)->protocol == IPPROTO_ICMP) {
if (!nf_nat_icmp_reply_translation(ct, ctinfo,
hooknum, skb))
return NF_DROP;
else
return NF_ACCEPT;
}
case IP_CT_NEW:
if (!nf_nat_initialized(ct, maniptype)) {
unsigned int ret;
if (hooknum == NF_INET_LOCAL_IN)
ret = alloc_null_binding(ct, hooknum);
else
ret = nf_nat_rule_find(skb, hooknum, in, out,
ct);
if (ret != NF_ACCEPT) {
return ret;
}
} else
pr_debug("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
break;
default:
NF_CT_ASSERT(ctinfo == IP_CT_ESTABLISHED ||
ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
}
return nf_nat_packet(ct, ctinfo, hooknum, skb);
}
static unsigned int
ip_nat_fn(unsigned int hooknum,
struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct ip_conntrack *ct;
enum ip_conntrack_info ctinfo;
struct ip_nat_info *info;
/* maniptype == SRC for postrouting. */
enum ip_nat_manip_type maniptype = HOOK2MANIP(hooknum);
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and ip_nat_out protects post-routing. */
IP_NF_ASSERT(!((*pskb)->nh.iph->frag_off
& htons(IP_MF|IP_OFFSET)));
(*pskb)->nfcache |= NFC_UNKNOWN;
/* If we had a hardware checksum before, it's now invalid */
if ((*pskb)->ip_summed == CHECKSUM_HW)
(*pskb)->ip_summed = CHECKSUM_NONE;
ct = ip_conntrack_get(*pskb, &ctinfo);
/* Can't track? It's not due to stress, or conntrack would
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. */
struct iphdr *iph = (*pskb)->nh.iph;
struct icmphdr *hdr = (struct icmphdr *)
((u_int32_t *)iph + iph->ihl);
if (iph->protocol == IPPROTO_ICMP
&& hdr->type == ICMP_REDIRECT)
return NF_DROP;
return NF_ACCEPT;
}
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
return icmp_reply_translation(*pskb, ct, hooknum,
CTINFO2DIR(ctinfo));
}
/* Fall thru... (Only ICMPs can be IP_CT_IS_REPLY) */
case IP_CT_NEW:
info = &ct->nat.info;
WRITE_LOCK(&ip_nat_lock);
/* Seen it before? This can happen for loopback, retrans,
or local packets.. */
if (!(info->initialized & (1 << maniptype))) {
unsigned int ret;
if (ct->master
&& master_ct(ct)->nat.info.helper
&& master_ct(ct)->nat.info.helper->expect) {
ret = call_expect(master_ct(ct), pskb,
hooknum, ct, info);
} else {
if (unlikely(is_confirmed(ct)))
/* NAT module was loaded late */
ret = alloc_null_binding_confirmed(ct, info,
hooknum);
else if (hooknum == NF_IP_LOCAL_IN)
/* LOCAL_IN hook doesn't have a chain */
ret = alloc_null_binding(ct, info,
hooknum);
else
ret = ip_nat_rule_find(pskb, hooknum,
in, out,
ct, info);
}
if (ret != NF_ACCEPT) {
WRITE_UNLOCK(&ip_nat_lock);
return ret;
}
} else
DEBUGP("Already setup manip %s for ct %p\n",
maniptype == IP_NAT_MANIP_SRC ? "SRC" : "DST",
ct);
WRITE_UNLOCK(&ip_nat_lock);
break;
default:
/* ESTABLISHED */
IP_NF_ASSERT(ctinfo == IP_CT_ESTABLISHED
|| ctinfo == (IP_CT_ESTABLISHED+IP_CT_IS_REPLY));
info = &ct->nat.info;
}
IP_NF_ASSERT(info);
return do_bindings(ct, ctinfo, info, hooknum, pskb);
}
