1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* atm_tcp.h - Driver-specific declarations of the ATMTCP driver (for use by
3 	       driver-specific utilities) */
4 
5 /* Written 1997-2000 by Werner Almesberger, EPFL LRC/ICA */
6 
7 
8 #ifndef _UAPILINUX_ATM_TCP_H
9 #define _UAPILINUX_ATM_TCP_H
10 
11 #include <linux/atmapi.h>
12 #include <linux/atm.h>
13 #include <linux/atmioc.h>
14 #include <linux/types.h>
15 
16 
17 /*
18  * All values in struct atmtcp_hdr are in network byte order
19  */
20 
21 struct atmtcp_hdr {
22 	__u16	vpi;
23 	__u16	vci;
24 	__u32	length;		/* ... of data part */
25 };
26 
27 /*
28  * All values in struct atmtcp_command are in host byte order
29  */
30 
31 #define ATMTCP_HDR_MAGIC	(~0)	/* this length indicates a command */
32 #define ATMTCP_CTRL_OPEN	1	/* request/reply */
33 #define ATMTCP_CTRL_CLOSE	2	/* request/reply */
34 
35 struct atmtcp_control {
36 	struct atmtcp_hdr hdr;	/* must be first */
37 	int type;		/* message type; both directions */
38 	atm_kptr_t vcc;		/* both directions */
39 	struct sockaddr_atmpvc addr; /* suggested value from kernel */
40 	struct atm_qos	qos;	/* both directions */
41 	int result;		/* to kernel only */
42 } __ATM_API_ALIGN;
43 
44 /*
45  * Field usage:
46  * Messge type	dir.	hdr.v?i	type	addr	qos	vcc	result
47  * -----------  ----	------- ----	----	---	---	------
48  * OPEN		K->D	Y	Y	Y	Y	Y	0
49  * OPEN		D->K	-	Y	Y	Y	Y	Y
50  * CLOSE	K->D	-	-	Y	-	Y	0
51  * CLOSE	D->K	-	-	-	-	Y	Y
52  */
53 
54 #define SIOCSIFATMTCP	_IO('a',ATMIOC_ITF)	/* set ATMTCP mode */
55 #define ATMTCP_CREATE	_IO('a',ATMIOC_ITF+14)	/* create persistent ATMTCP
56 						   interface */
57 #define ATMTCP_REMOVE	_IO('a',ATMIOC_ITF+15)	/* destroy persistent ATMTCP
58 						   interface */
59 
60 
61 
62 #endif /* _UAPILINUX_ATM_TCP_H */
63