netfilter: nf_conntrack: pass template to l4proto ->error() handler

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

diff --git a/net/netfilter/xt_length.c b/net/netfilter/xt_length.c
index ab6c710..c4871ca 100644 (file)
--- a/net/netfilter/xt_length.c
+++ b/net/netfilter/xt_length.c
@@ -8,91 +8,63 @@
 
 #include <linux/module.h>
 #include <linux/skbuff.h>
+#include <linux/ipv6.h>
 #include <net/ip.h>
 
 #include <linux/netfilter/xt_length.h>
 #include <linux/netfilter/x_tables.h>
 
 MODULE_AUTHOR("James Morris <jmorris@intercode.com.au>");
-MODULE_DESCRIPTION("IP tables packet length matching module");
+MODULE_DESCRIPTION("Xtables: Packet length (Layer3,4,5) match");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ipt_length");
 MODULE_ALIAS("ip6t_length");
 
-static int
-match(const struct sk_buff *skb,
-      const struct net_device *in,
-      const struct net_device *out,
-      const void *matchinfo,
-      int offset,
-      unsigned int protoff,
-      int *hotdrop)
+static bool
+length_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 {
-       const struct xt_length_info *info = matchinfo;
-       u_int16_t pktlen = ntohs(skb->nh.iph->tot_len);
-       
-       return (pktlen >= info->min && pktlen <= info->max) ^ info->invert;
-}
+       const struct xt_length_info *info = par->matchinfo;
+       u_int16_t pktlen = ntohs(ip_hdr(skb)->tot_len);
 
-static int
-match6(const struct sk_buff *skb,
-       const struct net_device *in,
-       const struct net_device *out,
-       const void *matchinfo,
-       int offset,
-       unsigned int protoff,
-       int *hotdrop)
-{
-       const struct xt_length_info *info = matchinfo;
-       u_int16_t pktlen = ntohs(skb->nh.ipv6h->payload_len) + sizeof(struct ipv6hdr);
-       
        return (pktlen >= info->min && pktlen <= info->max) ^ info->invert;
 }
 
-static int
-checkentry(const char *tablename,
-           const void *ip,
-           void *matchinfo,
-           unsigned int matchsize,
-           unsigned int hook_mask)
+static bool
+length_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
 {
-       if (matchsize != XT_ALIGN(sizeof(struct xt_length_info)))
-               return 0;
+       const struct xt_length_info *info = par->matchinfo;
+       const u_int16_t pktlen = ntohs(ipv6_hdr(skb)->payload_len) +
+                                sizeof(struct ipv6hdr);
 
-       return 1;
+       return (pktlen >= info->min && pktlen <= info->max) ^ info->invert;
 }
 
-static struct xt_match length_match = {
-       .name           = "length",
-       .match          = &match,
-       .checkentry     = &checkentry,
-       .me             = THIS_MODULE,
-};
-static struct xt_match length6_match = {
-       .name           = "length",
-       .match          = &match6,
-       .checkentry     = &checkentry,
-       .me             = THIS_MODULE,
+static struct xt_match length_mt_reg[] __read_mostly = {
+       {
+               .name           = "length",
+               .family         = NFPROTO_IPV4,
+               .match          = length_mt,
+               .matchsize      = sizeof(struct xt_length_info),
+               .me             = THIS_MODULE,
+       },
+       {
+               .name           = "length",
+               .family         = NFPROTO_IPV6,
+               .match          = length_mt6,
+               .matchsize      = sizeof(struct xt_length_info),
+               .me             = THIS_MODULE,
+       },
 };
 
-static int __init init(void)
+static int __init length_mt_init(void)
 {
-       int ret;
-       ret = xt_register_match(AF_INET, &length_match);
-       if (ret)
-               return ret;
-       ret = xt_register_match(AF_INET6, &length6_match);
-       if (ret)
-               xt_unregister_match(AF_INET, &length_match);
-
-       return ret;
+       return xt_register_matches(length_mt_reg, ARRAY_SIZE(length_mt_reg));
 }
 
-static void __exit fini(void)
+static void __exit length_mt_exit(void)
 {
-       xt_unregister_match(AF_INET, &length_match);
-       xt_unregister_match(AF_INET6, &length6_match);
+       xt_unregister_matches(length_mt_reg, ARRAY_SIZE(length_mt_reg));
 }
 
-module_init(init);
-module_exit(fini);
+module_init(length_mt_init);
+module_exit(length_mt_exit);