static int ipip_output(struct xfrm_state *x, struct sk_buff *skb)
{
- struct iphdr *iph;
-
- iph = skb->nh.iph;
- iph->tot_len = htons(skb->len);
- ip_send_check(iph);
-
+ skb_push(skb, -skb_network_offset(skb));
return 0;
}
-static int ipip_xfrm_rcv(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
+static int ipip_xfrm_rcv(struct xfrm_state *x, struct sk_buff *skb)
{
- return 0;
+ return ip_hdr(skb)->protocol;
}
static int ipip_init_state(struct xfrm_state *x)
{
- if (!x->props.mode)
+ if (x->props.mode != XFRM_MODE_TUNNEL)
return -EINVAL;
if (x->encap)
{
}
-static struct xfrm_type ipip_type = {
+static const struct xfrm_type ipip_type = {
.description = "IPIP",
.owner = THIS_MODULE,
.proto = IPPROTO_IPIP,
.output = ipip_output
};
+static int xfrm_tunnel_rcv(struct sk_buff *skb)
+{
+ return xfrm4_rcv_spi(skb, IPPROTO_IPIP, ip_hdr(skb)->saddr);
+}
+
static int xfrm_tunnel_err(struct sk_buff *skb, u32 info)
{
return -ENOENT;
}
static struct xfrm_tunnel xfrm_tunnel_handler = {
- .handler = xfrm4_rcv,
+ .handler = xfrm_tunnel_rcv,
.err_handler = xfrm_tunnel_err,
.priority = 2,
};
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static struct xfrm_tunnel xfrm64_tunnel_handler = {
+ .handler = xfrm_tunnel_rcv,
+ .err_handler = xfrm_tunnel_err,
+ .priority = 2,
+};
+#endif
+
static int __init ipip_init(void)
{
if (xfrm_register_type(&ipip_type, AF_INET) < 0) {
printk(KERN_INFO "ipip init: can't add xfrm type\n");
return -EAGAIN;
}
- if (xfrm4_tunnel_register(&xfrm_tunnel_handler)) {
- printk(KERN_INFO "ipip init: can't add xfrm handler\n");
+
+ if (xfrm4_tunnel_register(&xfrm_tunnel_handler, AF_INET)) {
+ printk(KERN_INFO "ipip init: can't add xfrm handler for AF_INET\n");
+ xfrm_unregister_type(&ipip_type, AF_INET);
+ return -EAGAIN;
+ }
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ if (xfrm4_tunnel_register(&xfrm64_tunnel_handler, AF_INET6)) {
+ printk(KERN_INFO "ipip init: can't add xfrm handler for AF_INET6\n");
+ xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET);
xfrm_unregister_type(&ipip_type, AF_INET);
return -EAGAIN;
}
+#endif
return 0;
}
static void __exit ipip_fini(void)
{
- if (xfrm4_tunnel_deregister(&xfrm_tunnel_handler))
- printk(KERN_INFO "ipip close: can't remove xfrm handler\n");
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ if (xfrm4_tunnel_deregister(&xfrm64_tunnel_handler, AF_INET6))
+ printk(KERN_INFO "ipip close: can't remove xfrm handler for AF_INET6\n");
+#endif
+ if (xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET))
+ printk(KERN_INFO "ipip close: can't remove xfrm handler for AF_INET\n");
if (xfrm_unregister_type(&ipip_type, AF_INET) < 0)
printk(KERN_INFO "ipip close: can't remove xfrm type\n");
}
module_init(ipip_init);
module_exit(ipip_fini);
MODULE_LICENSE("GPL");
+MODULE_ALIAS_XFRM_TYPE(AF_INET, XFRM_PROTO_IPIP);