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