/* Definitions for the C interface to the DECnet LAT protocol */ /* Part of DEC PathWorks 2.0 for OS/2 */ #define uchar unsigned char #define uint unsigned int #define ulong unsigned long #define def_num_sessions 4 /* default number of sessions */ #define max_num_sessions 10 /* maximum number of sessions */ #define min_num_sessions 4 /* minimum number of sessions */ #define def_num_buffers 4 /* default number of buffers */ #define max_num_buffers 8 /* maximum number of buffers */ #define min_num_buffers 2 /* minimun number of buffers */ #define def_num_services 50 /* default number of services */ #define max_num_services 2048 /* maximum number of services */ #define min_num_services 10 /* minimum number of services */ #define def_num_retx 8 /* default number of retransmit */ #define max_num_retx 255 /* maximum number of retransmit */ #define min_num_retx 4 /* minimum number of retransmit */ #define SEND_CHAR 1 /* send a character */ #define GET_CHAR 2 /* read a character */ #define GET_CHAR_BLK 3 /* read a block of characters */ #define GET_STATUS 4 /* slot status */ #define START_SESSION 5 /* start a session */ #define START_SESS_PSW 6 /* start a session with specified password */ #define STOP_SESSION 7 /* stop a session */ #define SEND_BREAK 8 /* send a break signal */ #define ADD_PREFER_NODE 9 /* add preferred node */ #define DEL_PREFER_NODE 10 /* delete preferred node */ #define RESET_COUNTERS 11 /* reset lat counter */ #define READ_COUNTERS 12 /* read lat internal counters */ #define RESET_SERVICES 13 /* reset service index */ #define READ_SERVICES 14 /* read a service entry */ #define READ_SCB 15 /* read all of the scbs */ #define READ_VCB 16 /* read all of the vcbs */ #define READ_LMCB 17 /* read the lmcb */ #define READ_LATINFO 18 /* read lat info */ #define READ_SERVICE_ENTRY 19 /* read service entry info */ #define SET_RETX_LIMIT 20 /* set retransmit limit in lmcb */ #define SET_MULTI_STATE 21 /* set the state of the multicast receiver */ #define SET_GROUP_CODE 22 /* enable a specific group code */ #define CLEAR_GROUP_CODE 23 /* clear a specific group code */ /* Bit defination of LatStatus in LAT_CB */ #define LS_NoError 0x0000 /* No error for this function */ #define LS_NoChar 0x8000 /* No character read */ #define LS_CharNotSent 0x8000 /* Character not sent */ #define LS_BrkNotSent 0x8000 /* Break not sent */ #define LS_NotInRun 0x4000 /* Slot session not in run state */ #define LS_TxBufEmpty 0x2000 /* Transmit buffer empty */ #define LS_InvalidSize 0x1000 /* Bad size specified */ #define LS_SesStart 0x0800 /* Session in starting state */ #define LS_InvalidHdl 0x0400 /* Invalid session handle */ #define LS_NoMoreSession 0x0400 /* No more slot session available */ #define LS_TxBufBusy 0x0200 /* Unable to queue transmit data */ #define LS_NoCircuit 0x0200 /* No more virtual circuit */ #define LS_RxData 0x0100 /* Receive data available */ #define LS_NoService 0x0100 /* Service name not found */ #define LS_NoMoreService 0x0080 /* no more new service */ #define LS_NoDLL 0x0040 /* No DLL handle */ #define LS_OtherError 0x0020 /* another error has happened */ #define LS_IllegalFnc 0xFFFF /* illegal function */ /* LAT_CB Session Status Word */ #define SS_TxBufBusy 0x00 /* Slot session tx buffer busy */ #define SS_Stopped 0x08 /* Slot session stopped! */ #define SS_HostStop 0x10 /* Host sent stop slot */ #define IS_InitOK 0x0001 /* LAT driver init'ed */ #define IS_SessionErr 0x0002 /* Session specifier error */ #define IS_BufferErr 0x0004 /* Buffer specifier error */ #define IS_ServiceErr 0x0008 /* Service specifier error */ #define IS_ReTxErr 0x0010 /* Retransmit specifier error */ #define IS_GetMemErr 0x0800 /* Allocate memory error */ #define IS_LatPortailFailed 0x2000 /* Unable to open LAT portal */ #define IS_NeedDll 0x4000 /* DLL driver needed */ #define IS_AlreadyInit 0x8000 /* LAT driver already init'ed */ struct lat_init { uint MaxSessions; /* Maximum number of slot sessions */ uint MaxBuffers; /* Maximum number of buffers per session */ uint MaxServices; /* Maximum number of services */ uint ReTxLimit; /* Retransmit limit */ uint InitStatus; /* Initialization status */ }; struct lat_info { uchar vermjr; uchar vermir; uint NSessions; uint NBuffers; uint NServices; uint scbsize; }; struct service_info { uchar node_leng; /* node name length */ uchar node_name[16]; /* node name string */ uchar node_addr[6]; /* node address */ uchar node_status; /* node status */ uchar serv_rate; /* service rating */ uchar serv_leng; /* service length */ uchar serv_name[16]; /* service string */ uchar serv_status; /* service status */ }; struct scb_info { uint scb_inuse; /* scb inuse flag */ uint reserved1; /* reserved */ uint reserved2; /* reserved */ }; struct lat_cb { uchar LatFunction; /* function code */ uint SessionHandle; /* lat handle */ uint SessionStatus; /* Session status */ uint StopReason; /* Stop reason */ uint BufferSize; /* size of buffer */ ulong *BufferPtr; /* pointer to buffer */ ulong WaitTime; /* waiting time */ uchar CharByte; /* I/O character */ uint LatStatus; /* function returned status */ }; struct lat_count { uint n_count; /* number of counters */ uint ids[12]; ulong c1; ulong c2; ulong c3; ulong c4; ulong c5; ulong c6; ulong c7; ulong c8; ulong c9; ulong c10; ulong c11; ulong c12; ulong c13; ulong c14; }; struct lat_counter { ulong second_since_zeroed; ulong messages_transmitted; ulong messages_received; ulong messages_retransmitted; ulong out_of_seq_mess_received; ulong illegal_messages_received; ulong illegal_slots_received; ulong buf_que_entry_unavailable; ulong transmit_buffer_unavailable; ulong invalid_messages_received; ulong invalid_slot_received; ulong invalid_multicast_received; }; struct lmcb_struct { uchar lat_mess_retrans_limit; /* retransmit limit */ uchar group_enable[32]; /* group code */ uchar num_active_circuit; /* number of active circuits */ uchar num_active_session; /* number of active sessions */ uint lat_min_rcv_datagram_size; /* minimun datagram size */ uchar protocol_version; /* protocol version */ uchar protocol_eco; uchar max_sim_slots; /* maximum slots on this circuit */ uchar nbr_dl_bufs; /* number of datalink buffers minus 1 */ uchar server_circuit_timer; /* data transfer timer */ uchar lat_keep_alive_timer; /* keep alive timer (sec)*/ uint facility_number; /* Not used */ uint product_code; /* PC LAT server assigned code */ uchar server_retransmit_timer; /* unacked retransmit timer(sec) */ uchar lat_min_rcv_slot_size; /* minimum slot size */ uchar lat_min_rcv_att_slot_size; /* minimum attention slot size */ uchar server_name_len; /* lat server name length */ uchar server_name[16]; /* lat server name */ }; struct service_entry { uint node_pointer; uchar service_rating; uchar service_name_len; uchar service_name[16]; uchar service_status_flags; }; struct node_entry { uchar node_name_len; uchar node_name[16]; uchar node_address[6]; uchar status_flag; uchar msg_incarnation; uchar node_change_flags; }; struct vcb_struct { uint vc_state; /* VC state */ uchar circuit_name[18]; /* circuit name */ uchar vc_type; /* DCB type */ uchar vc_format; /* FORMAT of portal */ uchar rem_address[6]; /* Remote adapter address */ uchar loc_address[6]; /* local adapter address */ uint cp_typ; /* Protocol type */ uint cpad; /* padding */ uchar cctl; /* mo' paddin' */ uchar cp_ident[5]; /* even mo' paddin' */ uint cportal_id; /* portal number */ ulong unacked_xmtb; /* unacked message */ uint unacked_xmtb_len; uchar param_len[5]; /* even mo' paddin' */ uchar msg_typ; /* message type */ uint loc_cir_id; /* local circuit ID */ uint rem_cir_id; /* remote circuit ID */ uchar nxmt; /* next message number to tx */ uchar ack; /* most recent message acked */ uchar rrf; /* response request flag */ uchar dwf; /* data waiting flag */ uchar vc_status; /* number of sessions */ uint slot_index; /* index to first slot session on this circ */ uint last_xmit; /* index to last slot tx'ed on this circuit */ uchar retransmit_counter; /* retransmits on this message */ uchar uxmt; /* unack'ed message # */ uchar retransmit_timer_on; /* re-transmit timer turned on */ uchar retransmit_timer; /* count down for retransmit */ uchar balanced_mode_on; /* balance mode active flag */ uint balanced_mode_timer; /* tick counts for lat_keep_alive */ uint max_buf_size; /* max tx buffer size */ uchar max_circuit_sessions; /* max circuits */ uint disconnect_reason; /* disconnect reason */ }; struct scb_struct { uchar service[18]; /* service name */ uchar node[18]; uchar port[18]; ulong scb_sem; /**/ uint session_status; /* session status word */ uint stop_reason; /* session stop reason */ uint slot_state; /* slot state 0=halted */ uchar local_credits; /* available credits to tx slots */ uint vcb_offset; uint vcb_segment; uint back_slot; /* index to back slot on this circ */ uint forward_slot; /* index to forward slot */ uchar rem_slot_id; /* remote slot connect ID */ uchar loc_slot_id; /* local slot ID */ uchar slot_byte_count; /* number of bytes in tx_slot_data */ uchar remote_credits; /* credits from remote node */ uchar tx_slot_data[255]; /* data to be tx'ed */ uchar num_slots; /* number of slots in this buffer */ uchar num_occupied; /* number of slots in use */ uchar next_rx_slot; /* index to next slot to be used */ uchar cur_buf_slot; /* index to current slot in use */ uint rx_slot_pntr; /* offset to next char to be taken */ uint slot_ptr_table[2]; /* pointers to the slots */ }; struct flagbits { unsigned SW_duplicate : 1; unsigned SW_invalid_value : 1; unsigned SW_found : 1; }; struct SIB { char schar; /* switch character */ int value; /* switch value */ int defv; /* default value */ int minv; /* min value */ int maxv; /* max value */ struct flagbits flags; /* switch status flags */ }; struct decnode { unsigned char decnode_flags; unsigned int decnode_address; char decnode_name[7]; long decnode_pointer; };