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STREAMS-based Transport Provider Interface

Allowable Sequence of TPI Primitives

The following tables describe the possible events that may occur on the interface and the possible states as viewed by the transport user that the interface may enter due to an event. The events map directly to the transport service interface primitives as described in ``How TPI Works''.

Possible States
State Abbreviation Description Service Type
sta_0 unbnd unbound T_COTS, T_COTS_ORD,
      T_CLTS
sta_1 w_ack b_req awaiting acknowledgment T_COTS, T_COTS_ORD,
    of T_BIND_REQ T_CLTS
sta_2 w_ack u_req awaiting acknowledgment T_COTS, T_COTS_ORD,
    of T_UNBIND_REQ T_CLTS
sta_3 idle idle - no connection T_COTS, T_COTS_ORD,
      T_CLTS
sta_4 w_ack op_req awaiting acknowledgment T_COTS, T_COTS_ORD,
    of T_OPTMGMT_REQ T_CLTS
sta_5 w_ack c_req awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_CONN_REQ  
sta_6 w_con c_req awaiting confirmation T_COTS, T_COTS_ORD
    of T_CONN_REQ  
sta_7 w_res c_ind awaiting response T_COTS, T_COTS_ORD
    of T_CONN_IND  
sta_8 w_ack c_res awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_CONN_RES  
sta_9 data_t data transfer T_COTS, T_COTS_ORD
sta_10 w_ind or_rel awaiting T_ORDREL_IND T_COTS_ORD
sta_11 w_req or_rel awaiting T_ORDREL_REQ T_COTS_ORD
sta_12 w_ack dreq6 awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_DISCON_REQ  
sta_13 w_ack dreq7 awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_DISCON_REQ  
sta_14 w_ack dreq9 awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_DISCON_REQ  
sta_15 w_ack dreq10 awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_DISCON_REQ  
sta_16 w_ack dreq11 awaiting acknowledgment T_COTS, T_COTS_ORD
    of T_DISCON_REQ  

Kernel Level Transport Interface States


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OpenServer 6 and UnixWare (SVR5) HDK - June 2005