1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2/* atmsap.h - ATM Service Access Point addressing definitions */ 3 4/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */ 5 6 7#ifndef _LINUX_ATMSAP_H 8#define _LINUX_ATMSAP_H 9 10#include <linux/atmapi.h> 11 12/* 13 * BEGIN_xx and END_xx markers are used for automatic generation of 14 * documentation. Do not change them. 15 */ 16 17 18/* 19 * Layer 2 protocol identifiers 20 */ 21 22/* BEGIN_L2 */ 23#define ATM_L2_NONE 0 /* L2 not specified */ 24#define ATM_L2_ISO1745 0x01 /* Basic mode ISO 1745 */ 25#define ATM_L2_Q291 0x02 /* ITU-T Q.291 (Rec. I.441) */ 26#define ATM_L2_X25_LL 0x06 /* ITU-T X.25, link layer */ 27#define ATM_L2_X25_ML 0x07 /* ITU-T X.25, multilink */ 28#define ATM_L2_LAPB 0x08 /* Extended LAPB, half-duplex (Rec. T.71) */ 29#define ATM_L2_HDLC_ARM 0x09 /* HDLC ARM (ISO/IEC 4335) */ 30#define ATM_L2_HDLC_NRM 0x0a /* HDLC NRM (ISO/IEC 4335) */ 31#define ATM_L2_HDLC_ABM 0x0b /* HDLC ABM (ISO/IEC 4335) */ 32#define ATM_L2_ISO8802 0x0c /* LAN LLC (ISO/IEC 8802/2) */ 33#define ATM_L2_X75 0x0d /* ITU-T X.75, SLP */ 34#define ATM_L2_Q922 0x0e /* ITU-T Q.922 */ 35#define ATM_L2_USER 0x10 /* user-specified */ 36#define ATM_L2_ISO7776 0x11 /* ISO 7776 DTE-DTE */ 37/* END_L2 */ 38 39 40/* 41 * Layer 3 protocol identifiers 42 */ 43 44/* BEGIN_L3 */ 45#define ATM_L3_NONE 0 /* L3 not specified */ 46#define ATM_L3_X25 0x06 /* ITU-T X.25, packet layer */ 47#define ATM_L3_ISO8208 0x07 /* ISO/IEC 8208 */ 48#define ATM_L3_X223 0x08 /* ITU-T X.223 | ISO/IEC 8878 */ 49#define ATM_L3_ISO8473 0x09 /* ITU-T X.233 | ISO/IEC 8473 */ 50#define ATM_L3_T70 0x0a /* ITU-T T.70 minimum network layer */ 51#define ATM_L3_TR9577 0x0b /* ISO/IEC TR 9577 */ 52#define ATM_L3_H310 0x0c /* ITU-T Recommendation H.310 */ 53#define ATM_L3_H321 0x0d /* ITU-T Recommendation H.321 */ 54#define ATM_L3_USER 0x10 /* user-specified */ 55/* END_L3 */ 56 57 58/* 59 * High layer identifiers 60 */ 61 62/* BEGIN_HL */ 63#define ATM_HL_NONE 0 /* HL not specified */ 64#define ATM_HL_ISO 0x01 /* ISO */ 65#define ATM_HL_USER 0x02 /* user-specific */ 66#define ATM_HL_HLP 0x03 /* high layer profile - UNI 3.0 only */ 67#define ATM_HL_VENDOR 0x04 /* vendor-specific application identifier */ 68/* END_HL */ 69 70 71/* 72 * ITU-T coded mode of operation 73 */ 74 75/* BEGIN_IMD */ 76#define ATM_IMD_NONE 0 /* mode not specified */ 77#define ATM_IMD_NORMAL 1 /* normal mode of operation */ 78#define ATM_IMD_EXTENDED 2 /* extended mode of operation */ 79/* END_IMD */ 80 81/* 82 * H.310 code points 83 */ 84 85#define ATM_TT_NONE 0 /* terminal type not specified */ 86#define ATM_TT_RX 1 /* receive only */ 87#define ATM_TT_TX 2 /* send only */ 88#define ATM_TT_RXTX 3 /* receive and send */ 89 90#define ATM_MC_NONE 0 /* no multiplexing */ 91#define ATM_MC_TS 1 /* transport stream (TS) */ 92#define ATM_MC_TS_FEC 2 /* transport stream with forward error corr. */ 93#define ATM_MC_PS 3 /* program stream (PS) */ 94#define ATM_MC_PS_FEC 4 /* program stream with forward error corr. */ 95#define ATM_MC_H221 5 /* ITU-T Rec. H.221 */ 96 97/* 98 * SAP structures 99 */ 100 101#define ATM_MAX_HLI 8 /* maximum high-layer information length */ 102 103 104struct atm_blli { 105 unsigned char l2_proto; /* layer 2 protocol */ 106 union { 107 struct { 108 unsigned char mode; /* mode of operation (ATM_IMD_xxx), 0 if */ 109 /* absent */ 110 unsigned char window; /* window size (k), 1-127 (0 to omit) */ 111 } itu; /* ITU-T encoding */ 112 unsigned char user; /* user-specified l2 information */ 113 } l2; 114 unsigned char l3_proto; /* layer 3 protocol */ 115 union { 116 struct { 117 unsigned char mode; /* mode of operation (ATM_IMD_xxx), 0 if */ 118 /* absent */ 119 unsigned char def_size; /* default packet size (log2), 4-12 (0 to */ 120 /* omit) */ 121 unsigned char window;/* packet window size, 1-127 (0 to omit) */ 122 } itu; /* ITU-T encoding */ 123 unsigned char user; /* user specified l3 information */ 124 struct { /* if l3_proto = ATM_L3_H310 */ 125 unsigned char term_type; /* terminal type */ 126 unsigned char fw_mpx_cap; /* forward multiplexing capability */ 127 /* only if term_type != ATM_TT_NONE */ 128 unsigned char bw_mpx_cap; /* backward multiplexing capability */ 129 /* only if term_type != ATM_TT_NONE */ 130 } h310; 131 struct { /* if l3_proto = ATM_L3_TR9577 */ 132 unsigned char ipi; /* initial protocol id */ 133 unsigned char snap[5];/* IEEE 802.1 SNAP identifier */ 134 /* (only if ipi == NLPID_IEEE802_1_SNAP) */ 135 } tr9577; 136 } l3; 137} __ATM_API_ALIGN; 138 139 140struct atm_bhli { 141 unsigned char hl_type; /* high layer information type */ 142 unsigned char hl_length; /* length (only if hl_type == ATM_HL_USER || */ 143 /* hl_type == ATM_HL_ISO) */ 144 unsigned char hl_info[ATM_MAX_HLI];/* high layer information */ 145}; 146 147 148#define ATM_MAX_BLLI 3 /* maximum number of BLLI elements */ 149 150 151struct atm_sap { 152 struct atm_bhli bhli; /* local SAP, high-layer information */ 153 struct atm_blli blli[ATM_MAX_BLLI] __ATM_API_ALIGN; 154 /* local SAP, low-layer info */ 155}; 156 157 158static __inline__ int blli_in_use(struct atm_blli blli) 159{ 160 return blli.l2_proto || blli.l3_proto; 161} 162 163#endif 164