datapath: Use HAVE_PROTO_DATA_VALID when defining vswitch_skb_checksum_setup

The purpose of the non-empty variant of vswitch_skb_checksum_setup is to
synchronise the proto_data_valid and proto_csum_blank fields into the
standard skb csum/ip_summed fields, therefore it is more correct to key
off of HAVE_PROTO_DATA_VALID.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/datapath/datapath.c b/datapath/datapath.c
index 4c39767..2a8fb50 100644 (file)
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -574,7 +574,7 @@ static int dp_frame_hook(struct net_bridge_port *p, struct sk_buff **pskb)
 #error
 #endif
 
-#if defined(CONFIG_XEN) && LINUX_VERSION_CODE == KERNEL_VERSION(2,6,18)
+#if defined(CONFIG_XEN) && defined(HAVE_PROTO_DATA_VALID)
 /* This code is copied verbatim from net/dev/core.c in Xen's
  * linux-2.6.18-92.1.10.el5.xs5.0.0.394.644.  We can't call those functions
  * directly because they aren't exported. */