projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| f38bbc38 SL |
1 | |
| 2 | /* | |
| 3 | * DECnet Network Services Protocol definitions, | |
| 4 | * per Network Services Protocol Functional Specification, | |
| 5 | * Version 3.2.0, October 1980. | |
| 6 | */ | |
| 7 | ||
| 8 | /* | |
| 9 | * NSP message types | |
| 10 | */ | |
| 11 | #define NSP_DATA 0x00 /* data segment message */ | |
| 12 | #define NSP_LS 0x10 /* link service message */ | |
| 13 | #define NSP_INTR 0x30 /* interrupt message */ | |
| 14 | #define NSP_DATACK 0x04 /* data segment ack */ | |
| 15 | #define NSP_OTHACK 0x14 /* other data ack */ | |
| 16 | #define NSP_CONACK 0x24 /* connect ack */ | |
| 17 | #define NSP_NOP 0x08 /* no op */ | |
| 18 | #define NSP_CI 0x18 /* connect initiate */ | |
| 19 | #define NSP_CC 0x28 /* connect confirm */ | |
| 20 | #define NSP_DI 0x38 /* disconnect initiate */ | |
| 21 | #define NSP_DC 0x48 /* disconnect confirm */ | |
| 22 | ||
| 23 | /* flags for data segment messages */ | |
| 24 | #define NSP_BOM 0x20 /* beginning-of-message segment */ | |
| 25 | #define NSP_EOM 0x40 /* end-of-message segment */ | |
| 26 | ||
| 27 | /* | |
| 28 | * Data segment message | |
| 29 | */ | |
| 30 | struct nspd { | |
| 31 | char nsp_msgflg; /* message type and flags */ | |
| 32 | d_short nsp_dstaddr; /* destination address * | |
| 33 | d_short nsp_srcaddr; /* source address */ | |
| 34 | d_short nsp_acknum; /* number of ack'ed message */ | |
| 35 | d_short nsp_segnum; /* this message's segment number */ | |
| 36 | }; | |
| 37 | ||
| 38 | /* | |
| 39 | * Interrupt message | |
| 40 | */ | |
| 41 | struct nspi { | |
| 42 | char nsp_msgflg; /* message type and flags */ | |
| 43 | d_short nsp_dstaddr; /* destination address * | |
| 44 | d_short nsp_srcaddr; /* source address */ | |
| 45 | d_short nsp_acknum; /* number of ack'ed message */ | |
| 46 | d_short nsp_segnum; /* this message's segment number */ | |
| 47 | /* optional data follows */ | |
| 48 | }; | |
| 49 | ||
| 50 | /* | |
| 51 | * Link Service message | |
| 52 | */ | |
| 53 | struct nspls { | |
| 54 | char nsp_msgflg; /* message type and flags */ | |
| 55 | d_short nsp_dstaddr; /* destination address * | |
| 56 | d_short nsp_srcaddr; /* source address */ | |
| 57 | d_short nsp_acknum; /* number of ack'ed message */ | |
| 58 | d_short nsp_segnum; /* this message's segment number */ | |
| 59 | char nsp_lsflags; /* link service flags */ | |
| 60 | char nsp_fcval; /* flow control change value */ | |
| 61 | }; | |
| 62 | ||
| 63 | #define NSPLS_FCVALINT 0x0c /* fcval field interpretation: */ | |
| 64 | #define NSPLS_DATREQ 0x00 /* data segment request */ | |
| 65 | #define NSPLS_INTREQ 0x04 /* interrupt request */ | |
| 66 | #define NSPLS_FCMOD 0x03 /* flow control modification: */ | |
| 67 | #define NSPLS_NOCHANGE 0x00 /* no change */ | |
| 68 | #define NSPLS_OFF 0x01 /* do not send data */ | |
| 69 | #define NSPLS_ON 0x02 /* send data */ | |
| 70 | ||
| 71 | /* | |
| 72 | * Data or Other Data Ack | |
| 73 | */ | |
| 74 | struct nspack { | |
| 75 | char nsp_msgflg; /* message type and flags */ | |
| 76 | d_short nsp_dstaddr; /* destination address * | |
| 77 | d_short nsp_srcaddr; /* source address */ | |
| 78 | d_short nsp_acknum; /* number of ack'ed message */ | |
| 79 | }; | |
| 80 | ||
| 81 | #define NSPA_ACK 0x8000 /* ack flag for acknum */ | |
| 82 | #define NSPA_NAK 0x9000 /* nak flag for acknum */ | |
| 83 | #define NSPA_QUAL 0xf000 /* qual field for acknum */ | |
| 84 | #define NSPA_NUM 0x0fff /* num field for acknum */ | |
| 85 | ||
| 86 | /* | |
| 87 | * Connect Ack | |
| 88 | */ | |
| 89 | struct nspcack { | |
| 90 | char nsp_msgflg; /* message type and flags */ | |
| 91 | d_short nsp_dstaddr; /* destination address * | |
| 92 | }; | |
| 93 | ||
| 94 | /* | |
| 95 | * No Op message | |
| 96 | */ | |
| 97 | struct nspnop { | |
| 98 | char nsp_msgflg; /* message type and flags */ | |
| 99 | /* tstdata follows */ | |
| 100 | }; | |
| 101 | ||
| 102 | /* | |
| 103 | * Connect Initiate message | |
| 104 | */ | |
| 105 | struct nspci { | |
| 106 | char nsp_msgflg; /* message type and flags */ | |
| 107 | d_short nsp_dstaddr; /* destination address * | |
| 108 | d_short nsp_srcaddr; /* source address */ | |
| 109 | char nsp_services; /* flow control options */ | |
| 110 | char nsp_info; /* NSP version info */ | |
| 111 | d_short nsp_segsize; /* requested segment size */ | |
| 112 | /* connect data follows */ | |
| 113 | }; | |
| 114 | ||
| 115 | /* | |
| 116 | * Connect Confirm message | |
| 117 | */ | |
| 118 | struct nspcc { | |
| 119 | char nsp_msgflg; /* message type and flags */ | |
| 120 | d_short nsp_dstaddr; /* destination address * | |
| 121 | d_short nsp_srcaddr; /* source address */ | |
| 122 | char nsp_services; /* flow control options */ | |
| 123 | char nsp_info; /* NSP version info */ | |
| 124 | d_short nsp_segsize; /* requested segment size */ | |
| 125 | char nsp_cnt; /* size of optional data field */ | |
| 126 | /* optional connect data follows */ | |
| 127 | }; | |
| 128 | ||
| 129 | /* | |
| 130 | * Disconnect Initiate message | |
| 131 | */ | |
| 132 | struct nspdi { | |
| 133 | char nsp_msgflg; /* message type and flags */ | |
| 134 | d_short nsp_dstaddr; /* destination address * | |
| 135 | d_short nsp_srcaddr; /* source address */ | |
| 136 | d_short nsp_reason; /* reason for disconnect */ | |
| 137 | char nsp_dcnt; /* size of optional data field */ | |
| 138 | /* optional disconnect data follows */ | |
| 139 | }; | |
| 140 | ||
| 141 | /* | |
| 142 | * Disconnect Confirm message | |
| 143 | */ | |
| 144 | struct nspdc { | |
| 145 | char nsp_msgflg; /* message type and flags */ | |
| 146 | d_short nsp_dstaddr; /* destination address * | |
| 147 | d_short nsp_srcaddr; /* source address */ | |
| 148 | d_short nsp_reason; /* disconnect reason */ | |
| 149 | }; |