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  */
  51 struct x25_address {
  52         char x25_addr[16];
  53 };
  54
  55 /*
  56  *      Linux X.25 Address structure, used for bind, and connect mostly.
  57  */
  58 struct 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  */
  71 struct 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  */
  91 struct x25_route_struct {
  92         struct x25_address address;
  93         unsigned int       sigdigits;
  94         char               device[200];
  95 };
  96
  97 /*
  98  *      Facilities structure.
  99  */
 100 struct 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
 115 struct 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  */
 130 struct x25_calluserdata {
 131         unsigned int    cudlength;
 132         unsigned char   cuddata[128];
 133 };
 134
 135 /*
 136  *      Call clearing Cause and Diagnostic structure.
 137  */
 138 struct x25_causediag {
 139         unsigned char   cause;
 140         unsigned char   diagnostic;
 141 };
 142
 143 /*
 144  *      Further optional call user data match length selection
 145  */
 146 struct x25_subaddr {
 147         unsigned int cudmatchlength;
 148 };
 149
 150 #endif