1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/* atmsvc.h - ATM signaling kernel-demon interface definitions */
3
4/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
5
6
7#ifndef _LINUX_ATMSVC_H
8#define _LINUX_ATMSVC_H
9
10#include <linux/atmapi.h>
11#include <linux/atm.h>
12#include <linux/atmioc.h>
13
14
15#define ATMSIGD_CTRL _IO('a',ATMIOC_SPECIAL)
16				/* become ATM signaling demon control socket */
17
18enum atmsvc_msg_type { as_catch_null, as_bind, as_connect, as_accept, as_reject,
19		       as_listen, as_okay, as_error, as_indicate, as_close,
20		       as_itf_notify, as_modify, as_identify, as_terminate,
21		       as_addparty, as_dropparty };
22
23struct atmsvc_msg {
24	enum atmsvc_msg_type type;
25	atm_kptr_t vcc;
26	atm_kptr_t listen_vcc;		/* indicate */
27	int reply;			/* for okay and close:		   */
28					/*   < 0: error before active	   */
29					/*        (sigd has discarded ctx) */
30					/*   ==0: success		   */
31				        /*   > 0: error when active (still */
32					/*        need to close)	   */
33	struct sockaddr_atmpvc pvc;	/* indicate, okay (connect) */
34	struct sockaddr_atmsvc local;	/* local SVC address */
35	struct atm_qos qos;		/* QOS parameters */
36	struct atm_sap sap;		/* SAP */
37	unsigned int session;		/* for p2pm */
38	struct sockaddr_atmsvc svc;	/* SVC address */
39} __ATM_API_ALIGN;
40
41/*
42 * Message contents: see ftp://icaftp.epfl.ch/pub/linux/atm/docs/isp-*.tar.gz
43 */
44
45/*
46 * Some policy stuff for atmsigd and for net/atm/svc.c. Both have to agree on
47 * what PCR is used to request bandwidth from the device driver. net/atm/svc.c
48 * tries to do better than that, but only if there's no routing decision (i.e.
49 * if signaling only uses one ATM interface).
50 */
51
52#define SELECT_TOP_PCR(tp) ((tp).pcr ? (tp).pcr : \
53  (tp).max_pcr && (tp).max_pcr != ATM_MAX_PCR ? (tp).max_pcr : \
54  (tp).min_pcr ? (tp).min_pcr : ATM_MAX_PCR)
55
56#endif
57