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 * History 6 * mar/20/00 Daniela Squassoni Disabling/enabling of facilities 7 * negotiation. 8 * apr/02/05 Shaun Pereira Selective sub address matching with 9 * call user data 10 */ 11 12 #ifndef X25_KERNEL_H 13 #define X25_KERNEL_H 14 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 1 36 37 /* 38 * X.25 Packet Size values. 39 */ 40 #define X25_PS16 4 41 #define X25_PS32 5 42 #define X25_PS64 6 43 #define X25_PS128 7 44 #define X25_PS256 8 45 #define X25_PS512 9 46 #define X25_PS1024 10 47 #define X25_PS2048 11 48 #define X25_PS4096 12 49 50 /* 51 * An X.121 address, it is held as ASCII text, null terminated, up to 15 52 * digits and a null terminator. 53 */ 54 struct x25_address { 55 char x25_addr[16]; 56 }; 57 58 /* 59 * Linux X.25 Address structure, used for bind, and connect mostly. 60 */ 61 struct 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 major 70 * changes of this structure in 2.5.x which might break compatibilty. 71 * The somewhat ugly dimension 200-sizeof() is needed to maintain 72 * backward compatibility. 73 */ 74 struct 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 0x02 84 #define X25_MASK_PACKET_SIZE 0x04 85 #define X25_MASK_WINDOW_SIZE 0x08 86 87 #define X25_MASK_CALLING_AE 0x10 88 #define X25_MASK_CALLED_AE 0x20 89 90 91 /* 92 * Routing table control structure. 93 */ 94 struct x25_route_struct { 95 struct x25_address address; 96 unsigned int sigdigits; 97 char device[200]; 98 }; 99 100 /* 101 * Facilities structure. 102 */ 103 struct 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 facilities 112 * Only the called and calling address 113 * extension are currently implemented. 114 * The rest are in place to avoid the struct 115 * changing size if someone needs them later 116 */ 117 118 struct 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 */ 133 struct x25_calluserdata { 134 unsigned int cudlength; 135 unsigned char cuddata[128]; 136 }; 137 138 /* 139 * Call clearing Cause and Diagnostic structure. 140 */ 141 struct x25_causediag { 142 unsigned char cause; 143 unsigned char diagnostic; 144 }; 145 146 /* 147 * Further optional call user data match length selection 148 */ 149 struct x25_subaddr { 150 unsigned int cudmatchlength; 151 }; 152 153 #endif 154