[XFRM]: Add XFRM_MODE_xxx for future use.

Transformation mode is used as either IPsec transport or tunnel.
It is required to add two more items, route optimization and inbound trigger
for Mobile IPv6.
Based on MIPL2 kernel patch.

This patch was also written by: Ville Nuorvala <vnuorval@tcs.hut.fi>

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 4a96a9e3ef3b..5fd115f0c547 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -54,7 +54,7 @@ static int xfrm4_output_one(struct sk_buff *skb)
                         goto error_nolock;
         }
 
-        if (x->props.mode) {
+        if (x->props.mode == XFRM_MODE_TUNNEL) {
                 err = xfrm4_tunnel_check_size(skb);
                 if (err)
                         goto error_nolock;
@@ -85,7 +85,7 @@ static int xfrm4_output_one(struct sk_buff *skb)
                 }
                 dst = skb->dst;
                 x = dst->xfrm;
-        } while (x && !x->props.mode);
+        } while (x && (x->props.mode != XFRM_MODE_TUNNEL));
 
         IPCB(skb)->flags |= IPSKB_XFRM_TRANSFORMED;
         err = 0;