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 #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  */
  53 struct x25_address {
  54         char x25_addr[16];
  55 };
  56
  57 /*
  58  *      Linux X.25 Address structure, used for bind, and connect mostly.
  59  */
  60 struct 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  */
  73 struct 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  */
  93 struct x25_route_struct {
  94         struct x25_address address;
  95         unsigned int       sigdigits;
  96         char               device[200];
  97 };
  98
  99 /*
 100  *      Facilities structure.
 101  */
 102 struct 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
 117 struct 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  */
 132 struct x25_calluserdata {
 133         unsigned int    cudlength;
 134         unsigned char   cuddata[128];
 135 };
 136
 137 /*
 138  *      Call clearing Cause and Diagnostic structure.
 139  */
 140 struct x25_causediag {
 141         unsigned char   cause;
 142         unsigned char   diagnostic;
 143 };
 144
 145 /*
 146  *      Further optional call user data match length selection
 147  */
 148 struct x25_subaddr {
 149         unsigned int cudmatchlength;
 150 };
 151
 152 #endif