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/* atmsvc.h - ATM signaling kernel-demon interface definitions */
 
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
 

#ifndef _LINUX_ATMSVC_H
#define _LINUX_ATMSVC_H

#include <linux/atmapi.h>
#include <linux/atm.h>
#include <linux/atmioc.h>


#define ATMSIGD_CTRL _IO('a',ATMIOC_SPECIAL)
                                /* become ATM signaling demon control socket */

enum atmsvc_msg_type { as_catch_null,as_bind,as_connect,as_accept,as_reject,
  as_listen,as_okay,as_error,as_indicate,as_close,as_itf_notify,
  as_modify,as_identify,as_terminate };

struct atmsvc_msg {
        enum atmsvc_msg_type type;
        atm_kptr_t vcc;
        atm_kptr_t listen_vcc;          /* indicate */
        int reply;                      /* for okay and close:             */
                                        /*   < 0: error before active      */
                                        /*        (sigd has discarded ctx) */
                                        /*   ==0: success                  */
                                        /*   > 0: error when active (still */
                                        /*        need to close)           */
        struct sockaddr_atmpvc pvc;     /* indicate, okay (connect) */
        struct sockaddr_atmsvc local;   /* local SVC address */
        struct atm_qos qos;             /* QOS parameters */
        struct atm_sap sap;             /* SAP */
        unsigned int session;           /* for p2pm */
        struct sockaddr_atmsvc svc;     /* SVC address */
} __ATM_API_ALIGN;

/*
 * Message contents: see ftp://icaftp.epfl.ch/pub/linux/atm/docs/isp-*.tar.gz
 */

/*
 * Some policy stuff for atmsigd and for net/atm/svc.c. Both have to agree on
 * what PCR is used to request bandwidth from the device driver. net/atm/svc.c
 * tries to do better than that, but only if there's no routing decision (i.e.
 * if signaling only uses one ATM interface).
 */

#define SELECT_TOP_PCR(tp) ((tp).pcr ? (tp).pcr : \
  (tp).max_pcr && (tp).max_pcr != ATM_MAX_PCR ? (tp).max_pcr : \
  (tp).min_pcr ? (tp).min_pcr : ATM_MAX_PCR)

#endif