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
  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