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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * These are the public elements of the Linux kernel X.25 implementation.4 *5 * History6 * mar/20/00 Daniela Squassoni Disabling/enabling of facilities 7 * negotiation.8 * apr/02/05 Shaun Pereira Selective sub address matching with9 * call user data10 */11 12#ifndef X25_KERNEL_H13#define X25_KERNEL_H14 15#include <linux/types.h>16#include <linux/socket.h>17 18#define SIOCX25GSUBSCRIP (SIOCPROTOPRIVATE + 0)19#define SIOCX25SSUBSCRIP (SIOCPROTOPRIVATE + 1)20#define SIOCX25GFACILITIES (SIOCPROTOPRIVATE + 2)21#define SIOCX25SFACILITIES (SIOCPROTOPRIVATE + 3)22#define SIOCX25GCALLUSERDATA (SIOCPROTOPRIVATE + 4)23#define SIOCX25SCALLUSERDATA (SIOCPROTOPRIVATE + 5)24#define SIOCX25GCAUSEDIAG (SIOCPROTOPRIVATE + 6)25#define SIOCX25SCUDMATCHLEN (SIOCPROTOPRIVATE + 7)26#define SIOCX25CALLACCPTAPPRV (SIOCPROTOPRIVATE + 8)27#define SIOCX25SENDCALLACCPT (SIOCPROTOPRIVATE + 9)28#define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)29#define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)30#define SIOCX25SCAUSEDIAG (SIOCPROTOPRIVATE + 12)31 32/*33 * Values for {get,set}sockopt.34 */35#define X25_QBITINCL 136 37/*38 * X.25 Packet Size values.39 */40#define X25_PS16 441#define X25_PS32 542#define X25_PS64 643#define X25_PS128 744#define X25_PS256 845#define X25_PS512 946#define X25_PS1024 1047#define X25_PS2048 1148#define X25_PS4096 1249 50/*51 * An X.121 address, it is held as ASCII text, null terminated, up to 1552 * digits and a null terminator.53 */54struct x25_address {55 char x25_addr[16];56};57 58/*59 * Linux X.25 Address structure, used for bind, and connect mostly.60 */61struct sockaddr_x25 {62 __kernel_sa_family_t sx25_family; /* Must be AF_X25 */63 struct x25_address sx25_addr; /* X.121 Address */64};65 66/*67 * DTE/DCE subscription options.68 *69 * As this is missing lots of options, user should expect major70 * changes of this structure in 2.5.x which might break compatibilty.71 * The somewhat ugly dimension 200-sizeof() is needed to maintain72 * backward compatibility.73 */74struct x25_subscrip_struct {75 char device[200-sizeof(unsigned long)];76 unsigned long global_facil_mask; /* 0 to disable negotiation */77 unsigned int extended;78};79 80/* values for above global_facil_mask */81 82#define X25_MASK_REVERSE 0x01 83#define X25_MASK_THROUGHPUT 0x0284#define X25_MASK_PACKET_SIZE 0x0485#define X25_MASK_WINDOW_SIZE 0x0886 87#define X25_MASK_CALLING_AE 0x1088#define X25_MASK_CALLED_AE 0x2089 90 91/*92 * Routing table control structure.93 */94struct x25_route_struct {95 struct x25_address address;96 unsigned int sigdigits;97 char device[200];98};99 100/*101 * Facilities structure.102 */103struct x25_facilities {104 unsigned int winsize_in, winsize_out;105 unsigned int pacsize_in, pacsize_out;106 unsigned int throughput;107 unsigned int reverse;108};109 110/*111* ITU DTE facilities112* Only the called and calling address113* extension are currently implemented.114* The rest are in place to avoid the struct115* changing size if someone needs them later116*/117 118struct x25_dte_facilities {119 __u16 delay_cumul;120 __u16 delay_target;121 __u16 delay_max;122 __u8 min_throughput;123 __u8 expedited;124 __u8 calling_len;125 __u8 called_len;126 __u8 calling_ae[20];127 __u8 called_ae[20];128};129 130/*131 * Call User Data structure.132 */133struct x25_calluserdata {134 unsigned int cudlength;135 unsigned char cuddata[128];136};137 138/*139 * Call clearing Cause and Diagnostic structure.140 */141struct x25_causediag {142 unsigned char cause;143 unsigned char diagnostic;144};145 146/*147 * Further optional call user data match length selection148 */149struct x25_subaddr {150 unsigned int cudmatchlength;151};152 153#endif154