PERFORCE change 149518 for review

[Julian Elischer]

http://perforce.freebsd.org/chv.cgi?CH=149518

Change 149518 by julian at julian_trafmon1 on 2008/09/10 07:49:56

	Show how to iterate through vnets

Affected files ...

.. //depot/projects/vimage/porting_to_vimage.txt#8 edit

Differences ...

==== //depot/projects/vimage/porting_to_vimage.txt#8 (text+ko) ====

@@ -338,6 +338,35 @@
 	[...]
 }
 
+/*
+ * A function which on entry has no idea of which vnet it is on
+ * and needs to look at them all for some reason.
+ * NOTE! if this code is running in a thread that
+ * does nothing else, or otherwise doesn't care about which
+ * vnet it is on then the steps that save and restore the previous vnet
+ * need not be done. (Marked with /* XXX */)
+ */
+void
+foo_tick(void)
+{
+	VNET_ITERATOR_DECL(vnet_iter);
+	[...]
+ 
+	[...]
+	VNET_LIST_REF();
+	VNET_FOREACH(vnet_iter) {
+		CURVNET_SET(vnet_iter); 
+		INIT_VNET_NET(vnet_iter);
+		[...]
+		do work,
+		including calling code that assumes we have curvnet set.
+		[...]
+		CURVNET_RESTORE(); /* XXX */
+ 	}
+	VNET_LIST_UNREF();
+	[...]
+}
+
 #if (defined(VIMAGE) || defined(FUTURE))
 static int vnet_foo_iattach(const void *unused)
 {