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