LXR linux/include/uapi/linux/x25.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2/*
   3 * These are the public elements of the Linux kernel X.25 implementation.
   4 *
   5 *      History
   6 *      mar/20/00       Daniela Squassoni Disabling/enabling of facilities 
   7 *                                        negotiation.
   8 *      apr/02/05       Shaun Pereira Selective sub address matching with
   9 *                                      call user data
  10 */
  11
  12#ifndef X25_KERNEL_H
  13#define X25_KERNEL_H
  14
  15#include <linux/types.h>
  16#include <linux/socket.h>
  17
  18#define SIOCX25GSUBSCRIP        (SIOCPROTOPRIVATE + 0)
  19#define SIOCX25SSUBSCRIP        (SIOCPROTOPRIVATE + 1)
  20#define SIOCX25GFACILITIES      (SIOCPROTOPRIVATE + 2)
  21#define SIOCX25SFACILITIES      (SIOCPROTOPRIVATE + 3)
  22#define SIOCX25GCALLUSERDATA    (SIOCPROTOPRIVATE + 4)
  23#define SIOCX25SCALLUSERDATA    (SIOCPROTOPRIVATE + 5)
  24#define SIOCX25GCAUSEDIAG       (SIOCPROTOPRIVATE + 6)
  25#define SIOCX25SCUDMATCHLEN     (SIOCPROTOPRIVATE + 7)
  26#define SIOCX25CALLACCPTAPPRV   (SIOCPROTOPRIVATE + 8)
  27#define SIOCX25SENDCALLACCPT    (SIOCPROTOPRIVATE + 9)
  28#define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)
  29#define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)
  30#define SIOCX25SCAUSEDIAG       (SIOCPROTOPRIVATE + 12)
  31
  32/*
  33 *      Values for {get,set}sockopt.
  34 */
  35#define X25_QBITINCL            1
  36
  37/*
  38 *      X.25 Packet Size values.
  39 */
  40#define X25_PS16                4
  41#define X25_PS32                5
  42#define X25_PS64                6
  43#define X25_PS128               7
  44#define X25_PS256               8
  45#define X25_PS512               9
  46#define X25_PS1024              10
  47#define X25_PS2048              11
  48#define X25_PS4096              12
  49
  50/*
  51 * An X.121 address, it is held as ASCII text, null terminated, up to 15
  52 * digits and a null terminator.
  53 */
  54struct x25_address {
  55        char x25_addr[16];
  56};
  57
  58/*
  59 *      Linux X.25 Address structure, used for bind, and connect mostly.
  60 */
  61struct sockaddr_x25 {
  62        __kernel_sa_family_t sx25_family;       /* Must be AF_X25 */
  63        struct x25_address sx25_addr;           /* X.121 Address */
  64};
  65
  66/*
  67 *      DTE/DCE subscription options.
  68 *
  69 *      As this is missing lots of options, user should expect major
  70 *      changes of this structure in 2.5.x which might break compatibilty.
  71 *      The somewhat ugly dimension 200-sizeof() is needed to maintain
  72 *      backward compatibility.
  73 */
  74struct x25_subscrip_struct {
  75        char device[200-sizeof(unsigned long)];
  76        unsigned long   global_facil_mask;      /* 0 to disable negotiation */
  77        unsigned int    extended;
  78};
  79
  80/* values for above global_facil_mask */
  81
  82#define X25_MASK_REVERSE        0x01    
  83#define X25_MASK_THROUGHPUT     0x02
  84#define X25_MASK_PACKET_SIZE    0x04
  85#define X25_MASK_WINDOW_SIZE    0x08
  86
  87#define X25_MASK_CALLING_AE 0x10
  88#define X25_MASK_CALLED_AE 0x20
  89
  90
  91/*
  92 *      Routing table control structure.
  93 */
  94struct x25_route_struct {
  95        struct x25_address address;
  96        unsigned int       sigdigits;
  97        char               device[200];
  98};
  99
 100/*
 101 *      Facilities structure.
 102 */
 103struct x25_facilities {
 104        unsigned int    winsize_in, winsize_out;
 105        unsigned int    pacsize_in, pacsize_out;
 106        unsigned int    throughput;
 107        unsigned int    reverse;
 108};
 109
 110/*
 111* ITU DTE facilities
 112* Only the called and calling address
 113* extension are currently implemented.
 114* The rest are in place to avoid the struct
 115* changing size if someone needs them later
 116*/
 117
 118struct x25_dte_facilities {
 119        __u16 delay_cumul;
 120        __u16 delay_target;
 121        __u16 delay_max;
 122        __u8 min_throughput;
 123        __u8 expedited;
 124        __u8 calling_len;
 125        __u8 called_len;
 126        __u8 calling_ae[20];
 127        __u8 called_ae[20];
 128};
 129
 130/*
 131 *      Call User Data structure.
 132 */
 133struct x25_calluserdata {
 134        unsigned int    cudlength;
 135        unsigned char   cuddata[128];
 136};
 137
 138/*
 139 *      Call clearing Cause and Diagnostic structure.
 140 */
 141struct x25_causediag {
 142        unsigned char   cause;
 143        unsigned char   diagnostic;
 144};
 145
 146/*
 147 *      Further optional call user data match length selection
 148 */
 149struct x25_subaddr {
 150        unsigned int cudmatchlength;
 151};
 152
 153#endif
 154