#include <net/route.h>
#include <linux/bitops.h>
-#define ASSERT_READ_LOCK(x) MUST_BE_READ_LOCKED(&ip_nat_lock)
-#define ASSERT_WRITE_LOCK(x) MUST_BE_WRITE_LOCKED(&ip_nat_lock)
+#define ASSERT_READ_LOCK(x)
+#define ASSERT_WRITE_LOCK(x)
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ip_nat.h>
.valid_hooks = NAT_VALID_HOOKS,
.lock = RW_LOCK_UNLOCKED,
.me = THIS_MODULE,
+ .af = AF_INET,
};
/* Source NAT */
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
+ const struct ipt_target *target,
const void *targinfo,
void *userinfo)
{
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
+ const struct ipt_target *target,
const void *targinfo,
void *userinfo)
{
}
static int ipt_snat_checkentry(const char *tablename,
- const struct ipt_entry *e,
+ const void *entry,
+ const struct ipt_target *target,
void *targinfo,
unsigned int targinfosize,
unsigned int hook_mask)
printk("SNAT: multiple ranges no longer supported\n");
return 0;
}
-
- if (targinfosize != IPT_ALIGN(sizeof(struct ip_nat_multi_range_compat))) {
- DEBUGP("SNAT: Target size %u wrong for %u ranges\n",
- targinfosize, mr->rangesize);
- return 0;
- }
-
- /* Only allow these for NAT. */
- if (strcmp(tablename, "nat") != 0) {
- DEBUGP("SNAT: wrong table %s\n", tablename);
- return 0;
- }
-
- if (hook_mask & ~(1 << NF_IP_POST_ROUTING)) {
- DEBUGP("SNAT: hook mask 0x%x bad\n", hook_mask);
- return 0;
- }
return 1;
}
static int ipt_dnat_checkentry(const char *tablename,
- const struct ipt_entry *e,
+ const void *entry,
+ const struct ipt_target *target,
void *targinfo,
unsigned int targinfosize,
unsigned int hook_mask)
printk("DNAT: multiple ranges no longer supported\n");
return 0;
}
-
- if (targinfosize != IPT_ALIGN(sizeof(struct ip_nat_multi_range_compat))) {
- DEBUGP("DNAT: Target size %u wrong for %u ranges\n",
- targinfosize, mr->rangesize);
- return 0;
- }
-
- /* Only allow these for NAT. */
- if (strcmp(tablename, "nat") != 0) {
- DEBUGP("DNAT: wrong table %s\n", tablename);
- return 0;
- }
-
- if (hook_mask & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT))) {
- DEBUGP("DNAT: hook mask 0x%x bad\n", hook_mask);
- return 0;
- }
-
return 1;
}
return ip_nat_setup_info(conntrack, &range, hooknum);
}
+unsigned int
+alloc_null_binding_confirmed(struct ip_conntrack *conntrack,
+ struct ip_nat_info *info,
+ unsigned int hooknum)
+{
+ u_int32_t ip
+ = (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC
+ ? conntrack->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip
+ : conntrack->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip);
+ u_int16_t all
+ = (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC
+ ? conntrack->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.all
+ : conntrack->tuplehash[IP_CT_DIR_REPLY].tuple.src.u.all);
+ struct ip_nat_range range
+ = { IP_NAT_RANGE_MAP_IPS, ip, ip, { all }, { all } };
+
+ DEBUGP("Allocating NULL binding for confirmed %p (%u.%u.%u.%u)\n",
+ conntrack, NIPQUAD(ip));
+ return ip_nat_setup_info(conntrack, &range, hooknum);
+}
+
int ip_nat_rule_find(struct sk_buff **pskb,
unsigned int hooknum,
const struct net_device *in,
static struct ipt_target ipt_snat_reg = {
.name = "SNAT",
.target = ipt_snat_target,
+ .targetsize = sizeof(struct ip_nat_multi_range_compat),
+ .table = "nat",
+ .hooks = 1 << NF_IP_POST_ROUTING,
.checkentry = ipt_snat_checkentry,
};
static struct ipt_target ipt_dnat_reg = {
.name = "DNAT",
.target = ipt_dnat_target,
+ .targetsize = sizeof(struct ip_nat_multi_range_compat),
+ .table = "nat",
+ .hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT),
.checkentry = ipt_dnat_checkentry,
};