svn commit: r305691 - stable/11/sys/kern

[Kevin Lo]

Author: kevlo
Date: Sun Sep 11 07:24:12 2016
New Revision: 305691
URL: https://svnweb.freebsd.org/changeset/base/305691

Log:
  MFC r305575:
  
  In m_devget(), if the data fits in a packet header mbuf, check the amount
  of data is less than or equal to MHLEN instead of MLEN when placing initial
  small packet header at end of mbuf.
  
  Reviewed by:	glebius

Modified:
  stable/11/sys/kern/uipc_mbuf.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/kern/uipc_mbuf.c
==============================================================================
--- stable/11/sys/kern/uipc_mbuf.c	Sun Sep 11 01:11:47 2016	(r305690)
+++ stable/11/sys/kern/uipc_mbuf.c	Sun Sep 11 07:24:12 2016	(r305691)
@@ -984,7 +984,7 @@ m_devget(char *buf, int totlen, int off,
 				len = MHLEN;
 
 				/* Place initial small packet/header at end of mbuf */
-				if (m && totlen + off + max_linkhdr <= MLEN) {
+				if (m && totlen + off + max_linkhdr <= MHLEN) {
 					m->m_data += max_linkhdr;
 					len -= max_linkhdr;
 				}