Merge branch 'linus' into cont_syslog

[safe/jmp/linux-2.6] / net / ipv6 / xfrm6_mode_tunnel.c

diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index ea22838..b809812 100644 (file)
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -5,6 +5,7 @@
  * Copyright (c) 2004-2006 Herbert Xu <herbert@gondor.apana.org.au>
  */
 
+#include <linux/gfp.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -25,46 +26,29 @@ static inline void ipip6_ecn_decapsulate(struct sk_buff *skb)
                IP6_ECN_set_ce(inner_iph);
 }
 
-static inline void ip6ip_ecn_decapsulate(struct sk_buff *skb)
-{
-       if (INET_ECN_is_ce(ipv6_get_dsfield(ipv6_hdr(skb))))
-                       IP_ECN_set_ce(ipip_hdr(skb));
-}
-
 /* Add encapsulation header.
  *
  * The top IP header will be constructed per RFC 2401.
  */
-static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
+static int xfrm6_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
 {
-       struct dst_entry *dst = skb->dst;
-       struct xfrm_dst *xdst = (struct xfrm_dst*)dst;
-       struct ipv6hdr *iph, *top_iph;
+       struct dst_entry *dst = skb_dst(skb);
+       struct ipv6hdr *top_iph;
        int dsfield;
 
-       iph = ipv6_hdr(skb);
-
        skb_set_network_header(skb, -x->props.header_len);
        skb->mac_header = skb->network_header +
                          offsetof(struct ipv6hdr, nexthdr);
-       skb->transport_header = skb->network_header + sizeof(*iph);
+       skb->transport_header = skb->network_header + sizeof(*top_iph);
        top_iph = ipv6_hdr(skb);
 
        top_iph->version = 6;
-       if (xdst->route->ops->family == AF_INET6) {
-               top_iph->priority = iph->priority;
-               top_iph->flow_lbl[0] = iph->flow_lbl[0];
-               top_iph->flow_lbl[1] = iph->flow_lbl[1];
-               top_iph->flow_lbl[2] = iph->flow_lbl[2];
-               top_iph->nexthdr = IPPROTO_IPV6;
-       } else {
-               top_iph->priority = 0;
-               top_iph->flow_lbl[0] = 0;
-               top_iph->flow_lbl[1] = 0;
-               top_iph->flow_lbl[2] = 0;
-               top_iph->nexthdr = IPPROTO_IPIP;
-       }
-       dsfield = ipv6_get_dsfield(top_iph);
+
+       memcpy(top_iph->flow_lbl, XFRM_MODE_SKB_CB(skb)->flow_lbl,
+              sizeof(top_iph->flow_lbl));
+       top_iph->nexthdr = xfrm_af2proto(skb_dst(skb)->ops->family);
+
+       dsfield = XFRM_MODE_SKB_CB(skb)->tos;
        dsfield = INET_ECN_encapsulate(dsfield, dsfield);
        if (x->props.flags & XFRM_STATE_NOECN)
                dsfield &= ~INET_ECN_MASK;
@@ -72,18 +56,15 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
        top_iph->hop_limit = dst_metric(dst->child, RTAX_HOPLIMIT);
        ipv6_addr_copy(&top_iph->saddr, (struct in6_addr *)&x->props.saddr);
        ipv6_addr_copy(&top_iph->daddr, (struct in6_addr *)&x->id.daddr);
-       skb->protocol = htons(ETH_P_IPV6);
        return 0;
 }
 
-static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
+static int xfrm6_mode_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
 {
        int err = -EINVAL;
        const unsigned char *old_mac;
-       const unsigned char *nh = skb_network_header(skb);
 
-       if (nh[IP6CB(skb)->nhoff] != IPPROTO_IPV6 &&
-           nh[IP6CB(skb)->nhoff] != IPPROTO_IPIP)
+       if (XFRM_MODE_SKB_CB(skb)->protocol != IPPROTO_IPV6)
                goto out;
        if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
                goto out;
@@ -92,17 +73,12 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
            (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
                goto out;
 
-       nh = skb_network_header(skb);
-       if (nh[IP6CB(skb)->nhoff] == IPPROTO_IPV6) {
-               if (x->props.flags & XFRM_STATE_DECAP_DSCP)
-                       ipv6_copy_dscp(ipv6_hdr(skb), ipipv6_hdr(skb));
-               if (!(x->props.flags & XFRM_STATE_NOECN))
-                       ipip6_ecn_decapsulate(skb);
-       } else {
-               if (!(x->props.flags & XFRM_STATE_NOECN))
-                       ip6ip_ecn_decapsulate(skb);
-               skb->protocol = htons(ETH_P_IP);
-       }
+       if (x->props.flags & XFRM_STATE_DECAP_DSCP)
+               ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
+                              ipipv6_hdr(skb));
+       if (!(x->props.flags & XFRM_STATE_NOECN))
+               ipip6_ecn_decapsulate(skb);
+
        old_mac = skb_mac_header(skb);
        skb_set_mac_header(skb, -skb->mac_len);
        memmove(skb_mac_header(skb), old_mac, skb->mac_len);
@@ -114,18 +90,21 @@ out:
 }
 
 static struct xfrm_mode xfrm6_tunnel_mode = {
-       .input = xfrm6_tunnel_input,
-       .output = xfrm6_tunnel_output,
+       .input2 = xfrm6_mode_tunnel_input,
+       .input = xfrm_prepare_input,
+       .output2 = xfrm6_mode_tunnel_output,
+       .output = xfrm6_prepare_output,
        .owner = THIS_MODULE,
        .encap = XFRM_MODE_TUNNEL,
+       .flags = XFRM_MODE_FLAG_TUNNEL,
 };
 
-static int __init xfrm6_tunnel_init(void)
+static int __init xfrm6_mode_tunnel_init(void)
 {
        return xfrm_register_mode(&xfrm6_tunnel_mode, AF_INET6);
 }
 
-static void __exit xfrm6_tunnel_exit(void)
+static void __exit xfrm6_mode_tunnel_exit(void)
 {
        int err;
 
@@ -133,7 +112,7 @@ static void __exit xfrm6_tunnel_exit(void)
        BUG_ON(err);
 }
 
-module_init(xfrm6_tunnel_init);
-module_exit(xfrm6_tunnel_exit);
+module_init(xfrm6_mode_tunnel_init);
+module_exit(xfrm6_mode_tunnel_exit);
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_XFRM_MODE(AF_INET6, XFRM_MODE_TUNNEL);