Conveys the test-response data link service data unit (DLSDU) from the data link service (DLS) provider to the DLS user in response to a DL_TEST_REQ primitive.
The primitive consists of one M_PROTO message block, which contains the following structure, followed by zero or more M_DATA blocks containing zero or more bytes of data:
typedef struct
{
ulong dl_primitive;
ulong dl_flag;
ulong dl_dest_addr_length;
ulong dl_dest_addr_offset;
ulong dl_src_addr_length;
ulong dl_src_addr_offset;
} dl_test_con_t;
The DL_TEST_CON primitive conveys the test-response DLSDU from the DLS provider to the DLS user in response to a DL_TEST_REQ primitive.
| Item | Description |
|---|---|
| dl_primitive | Specifies the DL_TEST_CON primitive. |
| dl_flag | Indicates flag values for the request as follows:
|
| dl_dest_addr_length | Specifies the length of the data link service access point (DLSAP) address of the destination DLS user. If the destination user is implemented using Data Link Provider Interface (DLPI), this address is the full DLSAP address returned on the DL_BIND_ACK primitive. |
| dl_dest_addr_offset | Indicates where the destination DLSAP address begins. The value of this parameter is the offset from the beginning of the M_PROTO message block. |
| dl_src_addr_length | Specifies the length of the DLSAP address of the source DLS user. |
| dl_src_addr_offset | Indicates where the source DLSAP address begins. The value of this parameter is the offset from the beginning of the M_PROTO message block. |
| Item | Description |
|---|---|
| Valid | The primitive is valid in the DL_IDLE or DL_DATAXFER state. |
| New | The resulting state is unchanged. |