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From: Sepherosa Ziehau <sephe@FreeBSD.org>
Date: Tue, 19 Sep 2017 06:46:00 +0000 (UTC)
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Subject: svn commit: r323729 - head/sys/dev/hyperv/netvsc
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Author: sephe
Date: Tue Sep 19 06:46:00 2017
New Revision: 323729
URL: https://svnweb.freebsd.org/changeset/base/323729

Log:
  hyperv/hn: Incease max supported MTU
  
  MFC after:	1 week
  Sponsored by:	Microsoft
  Differential Revision:	https://reviews.freebsd.org/D12365

Modified:
  head/sys/dev/hyperv/netvsc/if_hnvar.h

Modified: head/sys/dev/hyperv/netvsc/if_hnvar.h
==============================================================================
--- head/sys/dev/hyperv/netvsc/if_hnvar.h	Tue Sep 19 06:38:57 2017	(r323728)
+++ head/sys/dev/hyperv/netvsc/if_hnvar.h	Tue Sep 19 06:46:00 2017	(r323729)
@@ -36,8 +36,7 @@
 #define HN_RXBUF_SIZE			(16 * 1024 * 1024)
 #define HN_RXBUF_SIZE_COMPAT		(15 * 1024 * 1024)
 
-/* Claimed to be 12232B */
-#define HN_MTU_MAX			(9 * 1024)
+#define HN_MTU_MAX			(65535 - ETHER_ADDR_LEN)
 
 #define HN_TXBR_SIZE			(128 * PAGE_SIZE)
 #define HN_RXBR_SIZE			(128 * PAGE_SIZE)