#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.raw >= skb->head &&
- (skb->mac.raw + ETH_HLEN) <= skb->data) &&
+ if (!(skb_mac_header(skb) >= skb->head &&
+ skb_mac_header(skb) + ETH_HLEN <= skb->data) &&
offset != 0) {
- *hotdrop = 1;
- return 0;
+ *hotdrop = true;
+ return false;
}
memset(eui64, 0, sizeof(eui64));
- if (eth_hdr(skb)->h_proto == ntohs(ETH_P_IPV6)) {
- if (skb->nh.ipv6h->version == 0x6) {
+ 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[0] |= 0x02;
i = 0;
- while ((skb->nh.ipv6h->saddr.s6_addr[8+i] == eui64[i])
- && (i < 8))
+ while (ipv6_hdr(skb)->saddr.s6_addr[8 + i] == eui64[i]
+ && i < 8)
i++;
if (i == 8)
- return 1;
+ return true;
}
}
- return 0;
+ return false;
}
-static struct ip6t_match eui64_match = {
+static struct xt_match eui64_match __read_mostly = {
.name = "eui64",
+ .family = AF_INET6,
.match = match,
.matchsize = sizeof(int),
.hooks = (1 << NF_IP6_PRE_ROUTING) | (1 << NF_IP6_LOCAL_IN) |
.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);