patch-2.3.18 linux/include/linux/atm_tcp.h

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diff -u --recursive --new-file v2.3.17/linux/include/linux/atm_tcp.h linux/include/linux/atm_tcp.h
@@ -1,7 +1,7 @@
 /* atm_tcp.h - Driver-specific declarations of the ATMTCP driver (for use by
 	       driver-specific utilities) */
 
-/* Written 1997,1998 by Werner Almesberger, EPFL LRC/ICA */
+/* Written 1997-1999 by Werner Almesberger, EPFL LRC/ICA */
 
 
 #ifndef LINUX_ATM_TCP_H
@@ -14,7 +14,7 @@
 
 
 /*
- * All values are in network byte order
+ * All values in struct atmtcp_hdr are in network byte order
  */
 
 struct atmtcp_hdr {
@@ -23,12 +23,38 @@
 	uint32_t	length;		/* ... of data part */
 };
 
+/*
+ * All values in struct atmtcp_command are in host byte order
+ */
+
+#define ATMTCP_HDR_MAGIC	(~0)	/* this length indicates a command */
+#define ATMTCP_CTRL_OPEN	1	/* request/reply */
+#define ATMTCP_CTRL_CLOSE	2	/* request/reply */
+
+struct atmtcp_control {
+	struct atmtcp_hdr hdr;	/* must be first */
+	int		type;	/* message type; both directions */
+	unsigned long	vcc;	/* both directions */
+	struct sockaddr_atmpvc addr; /* suggested value from kernel */
+	struct atm_qos	qos;	/* both directions */
+	int result;		/* to kernel only */
+};
+
+/*
+ * Field usage:
+ * Messge type	dir.	hdr.v?i	type	addr	qos	vcc	result
+ * -----------  ----	------- ----	----	---	---	------
+ * OPEN		K->D	Y	Y	Y	Y	Y	0
+ * OPEN		D->K	-	Y	Y	Y	Y	Y
+ * CLOSE	K->D	-	-	Y	-	Y	0
+ * CLOSE	D->K	-	-	-	-	Y	Y
+ */
 
 #define SIOCSIFATMTCP	_IO('a',ATMIOC_ITF)	/* set ATMTCP mode */
 #define ATMTCP_CREATE	_IO('a',ATMIOC_ITF+14)	/* create persistent ATMTCP
 						   interface */
 #define ATMTCP_REMOVE	_IO('a',ATMIOC_ITF+15)	/* destroy persistent ATMTCP
-						   interface*/
+						   interface */
 
 
 #ifdef __KERNEL__

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