DLPI Primitives
Raw Mode Service PrimitivesRaw Mode Service Primitives
This section describes the raw mode service primitives.
DL_HP_RAWDATA_REQ
Requests the DLS provider to send one completely formatted DLSDU to a peer DLS user. The DLSDU is assumed to have a complete Link and MAC Level header included.
As with connectionless data transfer, raw mode is an unacknowledged service, and the DLS provider makes no guarantees of delivery of connectionless DLSDUs. It is the responsibility of the DLS user to do any necessary sequencing or retransmission of DLSDUs in the event of a presumed loss.
Format
The message consists of one M_PROTO message block containing the structure shown below, followed by one or more M_DATA message blocks containing at least one byte of data. The amount of user data that may be transferred in a single DLSDU is limited. This limit is conveyed by the parameter dl_max_sdu in the DL_INFO_ACK primitive.
typedef struct {
ulong dl_primitive; } dl_hp_rawdata_req_t;
Parameters
dl_primitive
DL_HP_RAWDATA_REQ
State
The message is valid in state DL_IDLE.
New State
The resulting state is unchanged.
Response
Chapter 2 | 91 |