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From: Marko Zec <zec@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 161799 for review
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http://perforce.freebsd.org/chv.cgi?CH=161799

Change 161799 by zec@zec_tpx32 on 2009/05/09 01:37:53

	Add a mbuf flag for recording when an mbuf get handed over
	from one vnet to another.  This will primarily be used to
	avoid LORs / deadlocks when mbuf resulting from a write on
	a socket in one vnet gets looped back in the opposite direction
	in another vnet.

Affected files ...

.. //depot/projects/vimage-commit2/src/sys/sys/mbuf.h#9 edit

Differences ...

==== //depot/projects/vimage-commit2/src/sys/sys/mbuf.h#9 (text+ko) ====

@@ -200,6 +200,7 @@
 #define	M_PROTO7	0x00100000 /* protocol-specific */
 #define	M_PROTO8	0x00200000 /* protocol-specific */
 #define	M_FLOWID	0x00400000 /* flowid is valid */
+#define	M_XVNET		0x00800000 /* mbuf crossed from one vnet to another */
 /*
  * For RELENG_{6,7} steal these flags for limited multiple routing table
  * support. In RELENG_8 and beyond, use just one flag and a tag.
@@ -219,7 +220,7 @@
  */
 #define	M_COPYFLAGS \
     (M_PKTHDR|M_EOR|M_RDONLY|M_PROTOFLAGS|M_SKIP_FIREWALL|M_BCAST|M_MCAST|\
-     M_FRAG|M_FIRSTFRAG|M_LASTFRAG|M_VLANTAG|M_PROMISC|M_FIB)
+     M_FRAG|M_FIRSTFRAG|M_LASTFRAG|M_VLANTAG|M_PROMISC|M_FIB|M_XVNET)
 
 /*
  * External buffer types: identify ext_buf type.