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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 
103 struct 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;
137 
138 
139 struct 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 
150 struct atm_sap {
151  struct atm_bhli bhli; /* local SAP, high-layer information */
153  /* local SAP, low-layer info */
154 };
155 
156 
157 static __inline__ int blli_in_use(struct atm_blli blli)
158 {
159  return blli.l2_proto || blli.l3_proto;
160 }
161 
162 #endif