atmsvc.h

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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,
               as_addparty, as_dropparty };

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