sepherosa_gmail.com created this revision.
sepherosa_gmail.com added reviewers: network, adrian, delphij, royger, 
decui_microsoft.com, honzhan_microsoft.com, howard0su_gmail.com.
sepherosa_gmail.com added subscribers: freebsd-net-list, 
freebsd-virtualization-list.

REVISION SUMMARY
  Tested on Windows Server 2012.

REVISION DETAIL
  https://reviews.freebsd.org/D5317

AFFECTED FILES
  sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c

CHANGE DETAILS
  diff --git a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c 
b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
  --- a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
  +++ b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
  @@ -176,7 +176,7 @@
    * later.  UDP checksum offloading doesn't work on earlier
    * Windows releases.
    */
  -#define HN_CSUM_ASSIST_WIN8  (CSUM_TCP)
  +#define HN_CSUM_ASSIST_WIN8  (CSUM_IP | CSUM_TCP)
   #define HN_CSUM_ASSIST               (CSUM_IP | CSUM_UDP | CSUM_TCP)
   
   #define HN_LRO_LENLIM_DEF            (25 * ETHERMTU)

EMAIL PREFERENCES
  https://reviews.freebsd.org/settings/panel/emailpreferences/

To: sepherosa_gmail.com, network, adrian, delphij, royger, decui_microsoft.com, 
honzhan_microsoft.com, howard0su_gmail.com
Cc: freebsd-virtualization-list, freebsd-net-list
diff --git a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
--- a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
+++ b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
@@ -176,7 +176,7 @@
  * later.  UDP checksum offloading doesn't work on earlier
  * Windows releases.
  */
-#define HN_CSUM_ASSIST_WIN8	(CSUM_TCP)
+#define HN_CSUM_ASSIST_WIN8	(CSUM_IP | CSUM_TCP)
 #define HN_CSUM_ASSIST		(CSUM_IP | CSUM_UDP | CSUM_TCP)
 
 #define HN_LRO_LENLIM_DEF		(25 * ETHERMTU)

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