LXR linux/include/uapi/linux/atmsvc.h

   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