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;
136 } __ATM_API_ALIGN;
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 */
152 struct atm_blli blli[ATM_MAX_BLLI] __ATM_API_ALIGN;
153 /* local SAP, low-layer info */
154 };
155
156
blli_in_use(struct atm_blli blli)157 static __inline__ int blli_in_use(struct atm_blli blli)
158 {
159 return blli.l2_proto || blli.l3_proto;
160 }
161
162 #endif
163