Author: sephe
Date: Fri Feb 19 05:08:44 2016
New Revision: 295793
URL: https://svnweb.freebsd.org/changeset/base/295793

Log:
  hyperv/hn: Enable IP header checksum offloading for WIN8 (WinServ2012)
  
  Tested on Windows Server 2012.
  
  Reviewed by:  adrian
  Approved by:  adrian (mentor)
  MFC after:    1 week
  Sponsored by: Microsoft OSTC
  Differential Revision:        https://reviews.freebsd.org/D5317

Modified:
  head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c

Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
==============================================================================
--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c  Fri Feb 19 05:03:17 
2016        (r295792)
+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c  Fri Feb 19 05:08:44 
2016        (r295793)
@@ -176,7 +176,7 @@ struct hn_txdesc {
  * 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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