[NETFILTER]: x_tables: mark matches and targets __read_mostly

[safe/jmp/linux-2.6] / net / ipv6 / netfilter / ip6t_eui64.c

diff --git a/net/ipv6/netfilter/ip6t_eui64.c b/net/ipv6/netfilter/ip6t_eui64.c
index 616c2cb..34ba150 100644 (file)
--- a/net/ipv6/netfilter/ip6t_eui64.c
+++ b/net/ipv6/netfilter/ip6t_eui64.c
@@ -12,90 +12,75 @@
 #include <linux/ipv6.h>
 #include <linux/if_ether.h>
 
+#include <linux/netfilter/x_tables.h>
 #include <linux/netfilter_ipv6/ip6_tables.h>
 
 MODULE_DESCRIPTION("IPv6 EUI64 address checking match");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Andras Kis-Szabo <kisza@sch.bme.hu>");
 
-static int
+static bool
 match(const struct sk_buff *skb,
       const struct net_device *in,
       const struct net_device *out,
+      const struct xt_match *match,
       const void *matchinfo,
       int offset,
       unsigned int protoff,
-      int *hotdrop)
+      bool *hotdrop)
 {
+       unsigned char eui64[8];
+       int i = 0;
+
+       if (!(skb_mac_header(skb) >= skb->head &&
+             skb_mac_header(skb) + ETH_HLEN <= skb->data) &&
+           offset != 0) {
+               *hotdrop = true;
+               return false;
+       }
 
-    unsigned char eui64[8];
-    int i=0;
-
-     if ( !(skb->mac.raw >= skb->head
-                && (skb->mac.raw + ETH_HLEN) <= skb->data)
-                && offset != 0) {
-                        *hotdrop = 1;
-                        return 0;
-                }
-    
-    memset(eui64, 0, sizeof(eui64));
-
-    if (eth_hdr(skb)->h_proto == ntohs(ETH_P_IPV6)) {
-      if (skb->nh.ipv6h->version == 0x6) { 
-         memcpy(eui64, eth_hdr(skb)->h_source, 3);
-         memcpy(eui64 + 5, eth_hdr(skb)->h_source + 3, 3);
-        eui64[3]=0xff;
-        eui64[4]=0xfe;
-        eui64[0] |= 0x02;
+       memset(eui64, 0, sizeof(eui64));
 
-        i=0;
-        while ((skb->nh.ipv6h->saddr.s6_addr[8+i] ==
-                        eui64[i]) && (i<8)) i++;
+       if (eth_hdr(skb)->h_proto == htons(ETH_P_IPV6)) {
+               if (ipv6_hdr(skb)->version == 0x6) {
+                       memcpy(eui64, eth_hdr(skb)->h_source, 3);
+                       memcpy(eui64 + 5, eth_hdr(skb)->h_source + 3, 3);
+                       eui64[3] = 0xff;
+                       eui64[4] = 0xfe;
+                       eui64[0] |= 0x02;
 
-        if ( i == 8 )
-               return 1;
-      }
-    }
+                       i = 0;
+                       while (ipv6_hdr(skb)->saddr.s6_addr[8 + i] == eui64[i]
+                              && i < 8)
+                               i++;
 
-    return 0;
-}
-
-static int
-ip6t_eui64_checkentry(const char *tablename,
-                  const struct ip6t_ip6 *ip,
-                  void *matchinfo,
-                  unsigned int matchsize,
-                  unsigned int hook_mask)
-{
-       if (hook_mask
-           & ~((1 << NF_IP6_PRE_ROUTING) | (1 << NF_IP6_LOCAL_IN) |
-               (1 << NF_IP6_FORWARD))) {
-               printk("ip6t_eui64: only valid for PRE_ROUTING, LOCAL_IN or FORWARD.\n");
-               return 0;
+                       if (i == 8)
+                               return true;
+               }
        }
 
-       if (matchsize != IP6T_ALIGN(sizeof(int)))
-               return 0;
-
-       return 1;
+       return false;
 }
 
-static struct ip6t_match eui64_match = {
+static struct xt_match eui64_match __read_mostly = {
        .name           = "eui64",
-       .match          = &match,
-       .checkentry     = &ip6t_eui64_checkentry,
+       .family         = AF_INET6,
+       .match          = match,
+       .matchsize      = sizeof(int),
+       .hooks          = (1 << NF_IP6_PRE_ROUTING) | (1 << NF_IP6_LOCAL_IN) |
+                         (1 << NF_IP6_FORWARD),
        .me             = THIS_MODULE,
 };
 
-static int __init init(void)
+static int __init ip6t_eui64_init(void)
 {
-       return ip6t_register_match(&eui64_match);
+       return xt_register_match(&eui64_match);
 }
 
-static void __exit fini(void)
+static void __exit ip6t_eui64_fini(void)
 {
-       ip6t_unregister_match(&eui64_match);
+       xt_unregister_match(&eui64_match);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(ip6t_eui64_init);
+module_exit(ip6t_eui64_fini);