/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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/*

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* These are the public elements of the Linux kernel X.25 implementation.

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*

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* History

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* mar/20/00 Daniela Squassoni Disabling/enabling of facilities

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* negotiation.

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* apr/02/05 Shaun Pereira Selective sub address matching with

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* call user data

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*/

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#ifndef X25_KERNEL_H

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#define X25_KERNEL_H

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#include <linux/types.h>

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#include <linux/socket.h>

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#define SIOCX25GSUBSCRIP (SIOCPROTOPRIVATE + 0)

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#define SIOCX25SSUBSCRIP (SIOCPROTOPRIVATE + 1)

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#define SIOCX25GFACILITIES (SIOCPROTOPRIVATE + 2)

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#define SIOCX25SFACILITIES (SIOCPROTOPRIVATE + 3)

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#define SIOCX25GCALLUSERDATA (SIOCPROTOPRIVATE + 4)

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#define SIOCX25SCALLUSERDATA (SIOCPROTOPRIVATE + 5)

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#define SIOCX25GCAUSEDIAG (SIOCPROTOPRIVATE + 6)

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#define SIOCX25SCUDMATCHLEN (SIOCPROTOPRIVATE + 7)

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#define SIOCX25CALLACCPTAPPRV (SIOCPROTOPRIVATE + 8)

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#define SIOCX25SENDCALLACCPT (SIOCPROTOPRIVATE + 9)

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#define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)

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#define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)

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#define SIOCX25SCAUSEDIAG (SIOCPROTOPRIVATE + 12)

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/*

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* Values for {get,set}sockopt.

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*/

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#define X25_QBITINCL 1

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/*

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* X.25 Packet Size values.

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*/

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#define X25_PS16 4

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#define X25_PS32 5

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#define X25_PS64 6

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#define X25_PS128 7

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#define X25_PS256 8

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#define X25_PS512 9

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#define X25_PS1024 10

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#define X25_PS2048 11

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#define X25_PS4096 12

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/*

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* An X.121 address, it is held as ASCII text, null terminated, up to 15

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* digits and a null terminator.

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*/

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struct x25_address {

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char x25_addr[16];

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};

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/*

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* Linux X.25 Address structure, used for bind, and connect mostly.

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*/

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struct sockaddr_x25 {

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__kernel_sa_family_t sx25_family; /* Must be AF_X25 */

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struct x25_address sx25_addr; /* X.121 Address */

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};

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/*

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* DTE/DCE subscription options.

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*

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* As this is missing lots of options, user should expect major

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* changes of this structure in 2.5.x which might break compatibilty.

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* The somewhat ugly dimension 200-sizeof() is needed to maintain

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* backward compatibility.

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*/

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struct x25_subscrip_struct {

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char device[200-sizeof(unsigned long)];

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unsigned long global_facil_mask; /* 0 to disable negotiation */

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unsigned int extended;

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};

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/* values for above global_facil_mask */

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#define X25_MASK_REVERSE 0x01

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#define X25_MASK_THROUGHPUT 0x02

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#define X25_MASK_PACKET_SIZE 0x04

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#define X25_MASK_WINDOW_SIZE 0x08

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#define X25_MASK_CALLING_AE 0x10

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#define X25_MASK_CALLED_AE 0x20

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/*

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* Routing table control structure.

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*/

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struct x25_route_struct {

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struct x25_address address;

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unsigned int sigdigits;

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char device[200];

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};

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/*

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* Facilities structure.

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*/

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struct x25_facilities {

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unsigned int winsize_in, winsize_out;

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unsigned int pacsize_in, pacsize_out;

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unsigned int throughput;

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unsigned int reverse;

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};

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/*

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* ITU DTE facilities

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* Only the called and calling address

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* extension are currently implemented.

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* The rest are in place to avoid the struct

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* changing size if someone needs them later

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*/

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struct x25_dte_facilities {

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__u16 delay_cumul;

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__u16 delay_target;

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__u16 delay_max;

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__u8 min_throughput;

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__u8 expedited;

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__u8 calling_len;

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__u8 called_len;

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__u8 calling_ae[20];

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__u8 called_ae[20];

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};

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/*

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* Call User Data structure.

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*/

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struct x25_calluserdata {

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unsigned int cudlength;

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unsigned char cuddata[128];

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};

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/*

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* Call clearing Cause and Diagnostic structure.

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*/

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struct x25_causediag {

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unsigned char cause;

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unsigned char diagnostic;

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};

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/*

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* Further optional call user data match length selection

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*/

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struct x25_subaddr {

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unsigned int cudmatchlength;

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};

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#endif

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