/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* atmsap.h - ATM Service Access Point addressing definitions */ /* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */ #ifndef _LINUX_ATMSAP_H #define _LINUX_ATMSAP_H #include <linux/atmapi.h> /* * BEGIN_xx and END_xx markers are used for automatic generation of * documentation. Do not change them. */ /* * Layer 2 protocol identifiers */ /* BEGIN_L2 */ #define ATM_L2_NONE 0 /* L2 not specified */ #define ATM_L2_ISO1745 0x01 /* Basic mode ISO 1745 */ #define ATM_L2_Q291 0x02 /* ITU-T Q.291 (Rec. I.441) */ #define ATM_L2_X25_LL 0x06 /* ITU-T X.25, link layer */ #define ATM_L2_X25_ML 0x07 /* ITU-T X.25, multilink */ #define ATM_L2_LAPB 0x08 /* Extended LAPB, half-duplex (Rec. T.71) */ #define ATM_L2_HDLC_ARM 0x09 /* HDLC ARM (ISO/IEC 4335) */ #define ATM_L2_HDLC_NRM 0x0a /* HDLC NRM (ISO/IEC 4335) */ #define ATM_L2_HDLC_ABM 0x0b /* HDLC ABM (ISO/IEC 4335) */ #define ATM_L2_ISO8802 0x0c /* LAN LLC (ISO/IEC 8802/2) */ #define ATM_L2_X75 0x0d /* ITU-T X.75, SLP */ #define ATM_L2_Q922 0x0e /* ITU-T Q.922 */ #define ATM_L2_USER 0x10 /* user-specified */ #define ATM_L2_ISO7776 0x11 /* ISO 7776 DTE-DTE */ /* END_L2 */ /* * Layer 3 protocol identifiers */ /* BEGIN_L3 */ #define ATM_L3_NONE 0 /* L3 not specified */ #define ATM_L3_X25 0x06 /* ITU-T X.25, packet layer */ #define ATM_L3_ISO8208 0x07 /* ISO/IEC 8208 */ #define ATM_L3_X223 0x08 /* ITU-T X.223 | ISO/IEC 8878 */ #define ATM_L3_ISO8473 0x09 /* ITU-T X.233 | ISO/IEC 8473 */ #define ATM_L3_T70 0x0a /* ITU-T T.70 minimum network layer */ #define ATM_L3_TR9577 0x0b /* ISO/IEC TR 9577 */ #define ATM_L3_H310 0x0c /* ITU-T Recommendation H.310 */ #define ATM_L3_H321 0x0d /* ITU-T Recommendation H.321 */ #define ATM_L3_USER 0x10 /* user-specified */ /* END_L3 */ /* * High layer identifiers */ /* BEGIN_HL */ #define ATM_HL_NONE 0 /* HL not specified */ #define ATM_HL_ISO 0x01 /* ISO */ #define ATM_HL_USER 0x02 /* user-specific */ #define ATM_HL_HLP 0x03 /* high layer profile - UNI 3.0 only */ #define ATM_HL_VENDOR 0x04 /* vendor-specific application identifier */ /* END_HL */ /* * ITU-T coded mode of operation */ /* BEGIN_IMD */ #define ATM_IMD_NONE 0 /* mode not specified */ #define ATM_IMD_NORMAL 1 /* normal mode of operation */ #define ATM_IMD_EXTENDED 2 /* extended mode of operation */ /* END_IMD */ /* * H.310 code points */ #define ATM_TT_NONE 0 /* terminal type not specified */ #define ATM_TT_RX 1 /* receive only */ #define ATM_TT_TX 2 /* send only */ #define ATM_TT_RXTX 3 /* receive and send */ #define ATM_MC_NONE 0 /* no multiplexing */ #define ATM_MC_TS 1 /* transport stream (TS) */ #define ATM_MC_TS_FEC 2 /* transport stream with forward error corr. */ #define ATM_MC_PS 3 /* program stream (PS) */ #define ATM_MC_PS_FEC 4 /* program stream with forward error corr. */ #define ATM_MC_H221 5 /* ITU-T Rec. H.221 */ /* * SAP structures */ #define ATM_MAX_HLI 8 /* maximum high-layer information length */ struct atm_blli { unsigned char l2_proto; /* layer 2 protocol */ union { struct { unsigned char mode; /* mode of operation (ATM_IMD_xxx), 0 if */ /* absent */ unsigned char window; /* window size (k), 1-127 (0 to omit) */ } itu; /* ITU-T encoding */ unsigned char user; /* user-specified l2 information */ } l2; unsigned char l3_proto; /* layer 3 protocol */ union { struct { unsigned char mode; /* mode of operation (ATM_IMD_xxx), 0 if */ /* absent */ unsigned char def_size; /* default packet size (log2), 4-12 (0 to */ /* omit) */ unsigned char window;/* packet window size, 1-127 (0 to omit) */ } itu; /* ITU-T encoding */ unsigned char user; /* user specified l3 information */ struct { /* if l3_proto = ATM_L3_H310 */ unsigned char term_type; /* terminal type */ unsigned char fw_mpx_cap; /* forward multiplexing capability */ /* only if term_type != ATM_TT_NONE */ unsigned char bw_mpx_cap; /* backward multiplexing capability */ /* only if term_type != ATM_TT_NONE */ } h310; struct { /* if l3_proto = ATM_L3_TR9577 */ unsigned char ipi; /* initial protocol id */ unsigned char snap[5];/* IEEE 802.1 SNAP identifier */ /* (only if ipi == NLPID_IEEE802_1_SNAP) */ } tr9577; } l3; } __ATM_API_ALIGN; struct atm_bhli { unsigned char hl_type; /* high layer information type */ unsigned char hl_length; /* length (only if hl_type == ATM_HL_USER || */ /* hl_type == ATM_HL_ISO) */ unsigned char hl_info[ATM_MAX_HLI];/* high layer information */ }; #define ATM_MAX_BLLI 3 /* maximum number of BLLI elements */ struct atm_sap { struct atm_bhli bhli; /* local SAP, high-layer information */ struct atm_blli blli[ATM_MAX_BLLI] __ATM_API_ALIGN; /* local SAP, low-layer info */ }; static __inline__ int blli_in_use(struct atm_blli blli) { return blli.l2_proto || blli.l3_proto; } #endif