Acknowledges the receipt of data which had the N_DATA_ACK flag set.
This primitive consists of one M_PROTO message block with the following structure:
typedef struct {
ulong PRIM_type;
} N_datack_req_t;
The N_DATACK_REQ primitive acknowledges receipt of an N_DATA_IND primitive which had the receipt confirmation parameter set. The NPI application should send a N_DATACK_REQ on receipt of such data.
| PRIM_type | Specifies the N_DATACK_REQ primitive. |
This primitive does not require any acknowledgments. However, the primitive may generate a fatal error. The STREAMS M_ERROR message type notifies the NS user of an EPROTO error. As a result of the error, all system calls on that stream will fail.
| NSYERR | Indicates a system error. The error is indicated in the N_ERROR_ACK primitive. |
The N_DATACK_REQ primitive is part of X.25 Licensed Program.