LXR linux/include/linux/x25.h

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