X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv4%2Fxfrm4_mode_tunnel.c;h=e4deecba6dd216d546706f57e3e557123af52c71;hb=22649d1afbe6988688a07fd70abb06f1e2213567;hp=a2f2e6a5ec5d1662e6ba0b372af47059288cebaf;hpb=b643b0fdbc59cf6bbb086974b29d2571e9e9f646;p=linux-2.6

diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index a2f2e6a5ec..e4deecba6d 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -31,13 +31,7 @@ static inline void ipip6_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb)
 
 /* Add encapsulation header.
  *
- * The top IP header will be constructed per RFC 2401.  The following fields
- * in it shall be filled in by x->type->output:
- *      tot_len
- *      check
- *
- * On exit, skb->h will be set to the start of the payload to be processed
- * by x->type->output and skb->nh will be set to the top IP header.
+ * The top IP header will be constructed per RFC 2401.
  */
 static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
 {
@@ -47,10 +41,11 @@ static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
 	int flags;
 
 	iph = ip_hdr(skb);
-	skb->transport_header = skb->network_header;
 
-	skb_push(skb, x->props.header_len);
-	skb_reset_network_header(skb);
+	skb_set_network_header(skb, -x->props.header_len);
+	skb->mac_header = skb->network_header +
+			  offsetof(struct iphdr, protocol);
+	skb->transport_header = skb->network_header + sizeof(*iph);
 	top_iph = ip_hdr(skb);
 
 	top_iph->ihl = 5;
@@ -85,6 +80,8 @@ static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
 	top_iph->saddr = x->props.saddr.a4;
 	top_iph->daddr = x->id.daddr.a4;
 
+	skb->protocol = htons(ETH_P_IP);
+
 	memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
 	return 0;
 }
@@ -142,6 +139,7 @@ static struct xfrm_mode xfrm4_tunnel_mode = {
 	.output = xfrm4_tunnel_output,
 	.owner = THIS_MODULE,
 	.encap = XFRM_MODE_TUNNEL,
+	.flags = XFRM_MODE_FLAG_TUNNEL,
 };
 
 static int __init xfrm4_tunnel_init(void)