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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_H8#define _LINUX_ATMSAP_H9 10#include <linux/atmapi.h>11 12/*13 * BEGIN_xx and END_xx markers are used for automatic generation of14 * documentation. Do not change them.15 */16 17 18/*19 * Layer 2 protocol identifiers20 */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 identifiers42 */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 identifiers60 */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 operation73 */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 points83 */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 structures99 */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#endif164