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

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/* atmsap.h - ATM Service Access Point addressing definitions */

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/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */

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#ifndef _LINUX_ATMSAP_H

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#define _LINUX_ATMSAP_H

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#include <linux/atmapi.h>

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/*

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* BEGIN_xx and END_xx markers are used for automatic generation of

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* documentation. Do not change them.

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*/

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/*

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* Layer 2 protocol identifiers

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*/

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/* BEGIN_L2 */

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#define ATM_L2_NONE 0 /* L2 not specified */

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#define ATM_L2_ISO1745 0x01 /* Basic mode ISO 1745 */

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#define ATM_L2_Q291 0x02 /* ITU-T Q.291 (Rec. I.441) */

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#define ATM_L2_X25_LL 0x06 /* ITU-T X.25, link layer */

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#define ATM_L2_X25_ML 0x07 /* ITU-T X.25, multilink */

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#define ATM_L2_LAPB 0x08 /* Extended LAPB, half-duplex (Rec. T.71) */

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#define ATM_L2_HDLC_ARM 0x09 /* HDLC ARM (ISO/IEC 4335) */

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#define ATM_L2_HDLC_NRM 0x0a /* HDLC NRM (ISO/IEC 4335) */

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#define ATM_L2_HDLC_ABM 0x0b /* HDLC ABM (ISO/IEC 4335) */

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#define ATM_L2_ISO8802 0x0c /* LAN LLC (ISO/IEC 8802/2) */

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#define ATM_L2_X75 0x0d /* ITU-T X.75, SLP */

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#define ATM_L2_Q922 0x0e /* ITU-T Q.922 */

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#define ATM_L2_USER 0x10 /* user-specified */

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#define ATM_L2_ISO7776 0x11 /* ISO 7776 DTE-DTE */

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/* END_L2 */

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/*

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* Layer 3 protocol identifiers

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*/

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/* BEGIN_L3 */

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#define ATM_L3_NONE 0 /* L3 not specified */

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#define ATM_L3_X25 0x06 /* ITU-T X.25, packet layer */

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#define ATM_L3_ISO8208 0x07 /* ISO/IEC 8208 */

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#define ATM_L3_X223 0x08 /* ITU-T X.223 | ISO/IEC 8878 */

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#define ATM_L3_ISO8473 0x09 /* ITU-T X.233 | ISO/IEC 8473 */

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#define ATM_L3_T70 0x0a /* ITU-T T.70 minimum network layer */

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#define ATM_L3_TR9577 0x0b /* ISO/IEC TR 9577 */

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#define ATM_L3_H310 0x0c /* ITU-T Recommendation H.310 */

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#define ATM_L3_H321 0x0d /* ITU-T Recommendation H.321 */

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#define ATM_L3_USER 0x10 /* user-specified */

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/* END_L3 */

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/*

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* High layer identifiers

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*/

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/* BEGIN_HL */

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#define ATM_HL_NONE 0 /* HL not specified */

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#define ATM_HL_ISO 0x01 /* ISO */

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#define ATM_HL_USER 0x02 /* user-specific */

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#define ATM_HL_HLP 0x03 /* high layer profile - UNI 3.0 only */

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#define ATM_HL_VENDOR 0x04 /* vendor-specific application identifier */

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/* END_HL */

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/*

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* ITU-T coded mode of operation

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*/

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/* BEGIN_IMD */

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#define ATM_IMD_NONE 0 /* mode not specified */

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#define ATM_IMD_NORMAL 1 /* normal mode of operation */

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#define ATM_IMD_EXTENDED 2 /* extended mode of operation */

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/* END_IMD */

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/*

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* H.310 code points

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*/

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#define ATM_TT_NONE 0 /* terminal type not specified */

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#define ATM_TT_RX 1 /* receive only */

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#define ATM_TT_TX 2 /* send only */

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#define ATM_TT_RXTX 3 /* receive and send */

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#define ATM_MC_NONE 0 /* no multiplexing */

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#define ATM_MC_TS 1 /* transport stream (TS) */

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#define ATM_MC_TS_FEC 2 /* transport stream with forward error corr. */

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#define ATM_MC_PS 3 /* program stream (PS) */

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#define ATM_MC_PS_FEC 4 /* program stream with forward error corr. */

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#define ATM_MC_H221 5 /* ITU-T Rec. H.221 */

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/*

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* SAP structures

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*/

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#define ATM_MAX_HLI 8 /* maximum high-layer information length */

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struct atm_blli {

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unsigned char l2_proto; /* layer 2 protocol */

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union {

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struct {

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unsigned char mode; /* mode of operation (ATM_IMD_xxx), 0 if */

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/* absent */

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unsigned char window; /* window size (k), 1-127 (0 to omit) */

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} itu; /* ITU-T encoding */

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unsigned char user; /* user-specified l2 information */

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} l2;

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unsigned char l3_proto; /* layer 3 protocol */

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union {

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struct {

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unsigned char mode; /* mode of operation (ATM_IMD_xxx), 0 if */

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/* absent */

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unsigned char def_size; /* default packet size (log2), 4-12 (0 to */

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/* omit) */

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unsigned char window;/* packet window size, 1-127 (0 to omit) */

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} itu; /* ITU-T encoding */

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unsigned char user; /* user specified l3 information */

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struct { /* if l3_proto = ATM_L3_H310 */

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unsigned char term_type; /* terminal type */

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unsigned char fw_mpx_cap; /* forward multiplexing capability */

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/* only if term_type != ATM_TT_NONE */

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unsigned char bw_mpx_cap; /* backward multiplexing capability */

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/* only if term_type != ATM_TT_NONE */

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} h310;

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struct { /* if l3_proto = ATM_L3_TR9577 */

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unsigned char ipi; /* initial protocol id */

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unsigned char snap[5];/* IEEE 802.1 SNAP identifier */

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/* (only if ipi == NLPID_IEEE802_1_SNAP) */

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} tr9577;

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} l3;

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} __ATM_API_ALIGN;

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struct atm_bhli {

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unsigned char hl_type; /* high layer information type */

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unsigned char hl_length; /* length (only if hl_type == ATM_HL_USER || */

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/* hl_type == ATM_HL_ISO) */

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unsigned char hl_info[ATM_MAX_HLI];/* high layer information */

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};

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#define ATM_MAX_BLLI 3 /* maximum number of BLLI elements */

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struct atm_sap {

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struct atm_bhli bhli; /* local SAP, high-layer information */

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struct atm_blli blli[ATM_MAX_BLLI] __ATM_API_ALIGN;

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/* local SAP, low-layer info */

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};

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static __inline__ int blli_in_use(struct atm_blli blli)

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{

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return blli.l2_proto || blli.l3_proto;

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}

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#endif

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