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 
18 enum 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 
23 struct 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