netfilter: xtables: add struct xt_mtchk_param::net

[safe/jmp/linux-2.6] / net / ipv4 / netfilter / ipt_REDIRECT.c

diff --git a/net/ipv4/netfilter/ipt_REDIRECT.c b/net/ipv4/netfilter/ipt_REDIRECT.c
index c2b6b80..698e5e7 100644 (file)
--- a/net/ipv4/netfilter/ipt_REDIRECT.c
+++ b/net/ipv4/netfilter/ipt_REDIRECT.c
@@ -19,65 +19,45 @@
 #include <net/checksum.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/netfilter/x_tables.h>
-#ifdef CONFIG_NF_NAT_NEEDED
 #include <net/netfilter/nf_nat_rule.h>
-#else
-#include <linux/netfilter_ipv4/ip_nat_rule.h>
-#endif
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
-MODULE_DESCRIPTION("iptables REDIRECT target module");
-
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
+MODULE_DESCRIPTION("Xtables: Connection redirection to localhost");
 
 /* FIXME: Take multiple ranges --RR */
-static int
-redirect_check(const char *tablename,
-              const void *e,
-              const struct xt_target *target,
-              void *targinfo,
-              unsigned int hook_mask)
+static bool redirect_tg_check(const struct xt_tgchk_param *par)
 {
-       const struct ip_nat_multi_range_compat *mr = targinfo;
+       const struct nf_nat_multi_range_compat *mr = par->targinfo;
 
        if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) {
-               DEBUGP("redirect_check: bad MAP_IPS.\n");
-               return 0;
+               pr_debug("redirect_check: bad MAP_IPS.\n");
+               return false;
        }
        if (mr->rangesize != 1) {
-               DEBUGP("redirect_check: bad rangesize %u.\n", mr->rangesize);
-               return 0;
+               pr_debug("redirect_check: bad rangesize %u.\n", mr->rangesize);
+               return false;
        }
-       return 1;
+       return true;
 }
 
 static unsigned int
-redirect_target(struct sk_buff **pskb,
-               const struct net_device *in,
-               const struct net_device *out,
-               unsigned int hooknum,
-               const struct xt_target *target,
-               const void *targinfo)
+redirect_tg(struct sk_buff *skb, const struct xt_target_param *par)
 {
-       struct ip_conntrack *ct;
+       struct nf_conn *ct;
        enum ip_conntrack_info ctinfo;
        __be32 newdst;
-       const struct ip_nat_multi_range_compat *mr = targinfo;
-       struct ip_nat_range newrange;
+       const struct nf_nat_multi_range_compat *mr = par->targinfo;
+       struct nf_nat_range newrange;
 
-       IP_NF_ASSERT(hooknum == NF_IP_PRE_ROUTING
-                    || hooknum == NF_IP_LOCAL_OUT);
+       NF_CT_ASSERT(par->hooknum == NF_INET_PRE_ROUTING ||
+                    par->hooknum == NF_INET_LOCAL_OUT);
 
-       ct = ip_conntrack_get(*pskb, &ctinfo);
-       IP_NF_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
+       ct = nf_ct_get(skb, &ctinfo);
+       NF_CT_ASSERT(ct && (ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED));
 
        /* Local packets: make them go to loopback */
-       if (hooknum == NF_IP_LOCAL_OUT)
+       if (par->hooknum == NF_INET_LOCAL_OUT)
                newdst = htonl(0x7F000001);
        else {
                struct in_device *indev;
@@ -86,7 +66,7 @@ redirect_target(struct sk_buff **pskb,
                newdst = 0;
 
                rcu_read_lock();
-               indev = __in_dev_get_rcu((*pskb)->dev);
+               indev = __in_dev_get_rcu(skb->dev);
                if (indev && (ifa = indev->ifa_list))
                        newdst = ifa->ifa_local;
                rcu_read_unlock();
@@ -96,35 +76,35 @@ redirect_target(struct sk_buff **pskb,
        }
 
        /* Transfer from original range. */
-       newrange = ((struct ip_nat_range)
+       newrange = ((struct nf_nat_range)
                { mr->range[0].flags | IP_NAT_RANGE_MAP_IPS,
                  newdst, newdst,
                  mr->range[0].min, mr->range[0].max });
 
        /* Hand modified range to generic setup. */
-       return ip_nat_setup_info(ct, &newrange, hooknum);
+       return nf_nat_setup_info(ct, &newrange, IP_NAT_MANIP_DST);
 }
 
-static struct xt_target redirect_reg = {
+static struct xt_target redirect_tg_reg __read_mostly = {
        .name           = "REDIRECT",
-       .family         = AF_INET,
-       .target         = redirect_target,
-       .targetsize     = sizeof(struct ip_nat_multi_range_compat),
+       .family         = NFPROTO_IPV4,
+       .target         = redirect_tg,
+       .targetsize     = sizeof(struct nf_nat_multi_range_compat),
        .table          = "nat",
-       .hooks          = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT),
-       .checkentry     = redirect_check,
+       .hooks          = (1 << NF_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_OUT),
+       .checkentry     = redirect_tg_check,
        .me             = THIS_MODULE,
 };
 
-static int __init ipt_redirect_init(void)
+static int __init redirect_tg_init(void)
 {
-       return xt_register_target(&redirect_reg);
+       return xt_register_target(&redirect_tg_reg);
 }
 
-static void __exit ipt_redirect_fini(void)
+static void __exit redirect_tg_exit(void)
 {
-       xt_unregister_target(&redirect_reg);
+       xt_unregister_target(&redirect_tg_reg);
 }
 
-module_init(ipt_redirect_init);
-module_exit(ipt_redirect_fini);
+module_init(redirect_tg_init);
+module_exit(redirect_tg_exit);