linux/include/linux/x25.h
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   1/*
   2 * These are the public elements of the Linux kernel X.25 implementation.
   3 *
   4 *      History
   5 *      mar/20/00       Daniela Squassoni Disabling/enabling of facilities 
   6 *                                        negotiation.
   7 *      apr/02/05       Shaun Pereira Selective sub address matching with
   8 *                                      call user data
   9 */
  10
  11#ifndef X25_KERNEL_H
  12#define X25_KERNEL_H
  13
  14#include <linux/types.h>
  15#include <linux/socket.h>
  16
  17#define SIOCX25GSUBSCRIP        (SIOCPROTOPRIVATE + 0)
  18#define SIOCX25SSUBSCRIP        (SIOCPROTOPRIVATE + 1)
  19#define SIOCX25GFACILITIES      (SIOCPROTOPRIVATE + 2)
  20#define SIOCX25SFACILITIES      (SIOCPROTOPRIVATE + 3)
  21#define SIOCX25GCALLUSERDATA    (SIOCPROTOPRIVATE + 4)
  22#define SIOCX25SCALLUSERDATA    (SIOCPROTOPRIVATE + 5)
  23#define SIOCX25GCAUSEDIAG       (SIOCPROTOPRIVATE + 6)
  24#define SIOCX25SCUDMATCHLEN     (SIOCPROTOPRIVATE + 7)
  25#define SIOCX25CALLACCPTAPPRV   (SIOCPROTOPRIVATE + 8)
  26#define SIOCX25SENDCALLACCPT    (SIOCPROTOPRIVATE + 9)
  27#define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)
  28#define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)
  29#define SIOCX25SCAUSEDIAG       (SIOCPROTOPRIVATE + 12)
  30
  31/*
  32 *      Values for {get,set}sockopt.
  33 */
  34#define X25_QBITINCL            1
  35
  36/*
  37 *      X.25 Packet Size values.
  38 */
  39#define X25_PS16                4
  40#define X25_PS32                5
  41#define X25_PS64                6
  42#define X25_PS128               7
  43#define X25_PS256               8
  44#define X25_PS512               9
  45#define X25_PS1024              10
  46#define X25_PS2048              11
  47#define X25_PS4096              12
  48
  49/*
  50 * An X.121 address, it is held as ASCII text, null terminated, up to 15
  51 * digits and a null terminator.
  52 */
  53struct x25_address {
  54        char x25_addr[16];
  55};
  56
  57/*
  58 *      Linux X.25 Address structure, used for bind, and connect mostly.
  59 */
  60struct sockaddr_x25 {
  61        __kernel_sa_family_t sx25_family;       /* Must be AF_X25 */
  62        struct x25_address sx25_addr;           /* X.121 Address */
  63};
  64
  65/*
  66 *      DTE/DCE subscription options.
  67 *
  68 *      As this is missing lots of options, user should expect major
  69 *      changes of this structure in 2.5.x which might break compatibilty.
  70 *      The somewhat ugly dimension 200-sizeof() is needed to maintain
  71 *      backward compatibility.
  72 */
  73struct x25_subscrip_struct {
  74        char device[200-sizeof(unsigned long)];
  75        unsigned long   global_facil_mask;      /* 0 to disable negotiation */
  76        unsigned int    extended;
  77};
  78
  79/* values for above global_facil_mask */
  80
  81#define X25_MASK_REVERSE        0x01    
  82#define X25_MASK_THROUGHPUT     0x02
  83#define X25_MASK_PACKET_SIZE    0x04
  84#define X25_MASK_WINDOW_SIZE    0x08
  85
  86#define X25_MASK_CALLING_AE 0x10
  87#define X25_MASK_CALLED_AE 0x20
  88
  89
  90/*
  91 *      Routing table control structure.
  92 */
  93struct x25_route_struct {
  94        struct x25_address address;
  95        unsigned int       sigdigits;
  96        char               device[200];
  97};
  98
  99/*
 100 *      Facilities structure.
 101 */
 102struct x25_facilities {
 103        unsigned int    winsize_in, winsize_out;
 104        unsigned int    pacsize_in, pacsize_out;
 105        unsigned int    throughput;
 106        unsigned int    reverse;
 107};
 108
 109/*
 110* ITU DTE facilities
 111* Only the called and calling address
 112* extension are currently implemented.
 113* The rest are in place to avoid the struct
 114* changing size if someone needs them later
 115*/
 116
 117struct x25_dte_facilities {
 118        __u16 delay_cumul;
 119        __u16 delay_target;
 120        __u16 delay_max;
 121        __u8 min_throughput;
 122        __u8 expedited;
 123        __u8 calling_len;
 124        __u8 called_len;
 125        __u8 calling_ae[20];
 126        __u8 called_ae[20];
 127};
 128
 129/*
 130 *      Call User Data structure.
 131 */
 132struct x25_calluserdata {
 133        unsigned int    cudlength;
 134        unsigned char   cuddata[128];
 135};
 136
 137/*
 138 *      Call clearing Cause and Diagnostic structure.
 139 */
 140struct x25_causediag {
 141        unsigned char   cause;
 142        unsigned char   diagnostic;
 143};
 144
 145/*
 146 *      Further optional call user data match length selection
 147 */
 148struct x25_subaddr {
 149        unsigned int cudmatchlength;
 150};
 151
 152#endif
 153
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