HP rp4440 HP DLPI Programmer's Guide - Page 165
If a DL_DISCONNECT_REQ is issued in the DL_DATAXFER, before sending up a DL_RESET_IND or DL_RESET_CON.
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DLPI Primitives DLPI States To ensure accurate processing of DLPI primitives, the DLS provider must adhere to the following rules concerning the receipt and generation of STREAMS M_FLUSH messages during various state transitions. • The DLS provider must be ready to receive M_FLUSH messages from upstream and flush its queues as specified in the message. • The DLS provider must issue an M_FLUSH message upstream to flush both the read and write queues after receiving a successful DL_UNBIND_REQ primitive but before issuing the DL_OK_ACK. • If an incoming disconnect occurs when the interface is in the DL_DATAXFER, DL_USER_RESET_PENDING, or DL_PROV_RESET_PENDING state, the DLS provider must send up an M_FLUSH message to flush both the read and write queues before sending up a DL_DISCONNECT_IND. • If a DL_DISCONNECT_REQ is issued in the DL_DATAXFER, DL_USER_RESET_PENDING, or DL_PROV_RESET_PENDING states, the DLS provider must issue an M_FLUSH message upstream to flush both the read and write queues after receiving the successful DL_DISCONNECT_REQ but before issuing the DL_OK_ACK. • If a reset occurs when the interface is in the DL_DATAXFER or DL_USER_RESET_PENDING state, the DLS provider must send up an M_FLUSH message to flush both the read and write queues before sending up a DL_RESET_IND or DL_RESET_CON. Chapter 2 165