svn commit: r221151 - stable/8/sys/dev/usb/net

[Hans Petter Selasky]

Author: hselasky
Date: Thu Apr 28 06:57:46 2011
New Revision: 221151
URL: http://svn.freebsd.org/changeset/base/221151

Log:
  MFC r221077.
  The maximum NCM frame size must be so that it
  will generate a short terminated USB transfer if
  the maximum NCM frame size is greater than what
  the driver can handle.
  
  Approved by: 	thompsa

Modified:
  stable/8/sys/dev/usb/net/if_cdcereg.h
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)

Modified: stable/8/sys/dev/usb/net/if_cdcereg.h
==============================================================================
--- stable/8/sys/dev/usb/net/if_cdcereg.h	Thu Apr 28 06:54:38 2011	(r221150)
+++ stable/8/sys/dev/usb/net/if_cdcereg.h	Thu Apr 28 06:57:46 2011	(r221151)
@@ -39,7 +39,7 @@
 #define	CDCE_IND_SIZE_MAX 32            /* bytes */
 
 #define	CDCE_NCM_TX_MINLEN 512		/* bytes, must be power of two */
-#define	CDCE_NCM_TX_MAXLEN (1UL << 14)	/* bytes */
+#define	CDCE_NCM_TX_MAXLEN (16384 + 4)	/* bytes, must be short terminated */
 #define	CDCE_NCM_TX_FRAMES_MAX 8	/* units */
 
 #define	CDCE_NCM_RX_MAXLEN (1UL << 14)	/* bytes */