Installation guide

5: Header Formats
DC 900-1564A 73
5.11 Link Trace Data (Trace Access Mode Only)
Table 5–14 shows the read-only DLI_PROT_LINK_TRACE_DATA header format. See
Section 4.5.1 on page 53 for a functional description and the data format associated
with the response.
a
Requirements for non-DLI calls: ICP Header fields must be in network
byte-order, Protocol Header fields must be in client byte order, and the ICP
Header
usICPCount field is required.
Table 5–14: DLI_PROT_LINK_TRACE_DATA Header Format
Field Response Value (Read)
Freeway Header (network byte-order; used in DLI calls only):
usFWPacketType = FW_DATA
usFWCommand = FW_ICP_READ
usFWStatus = 0
ICP Header
a
usICPClientID = 0
usICPServerID = 0
a
usICPCount = 16 + data size (non-DLI calls only)
usICPCommand = DLI_ICP_CMD_READ
iICPStatus = 0
usICPParms[0] = ICP return node from Attach cmd
usICPParms[1] = 0
usICPParms[2] = 0
Protocol Header
a
usProtCommand = DLI_PROT_LINK_TRACE_DATA
iProtModifier = 0
usProtLinkID = Link number
usProtCircuitID = 0
usProtSessionID = Session ID from Attach response
usProtSequence = 0
usProtXParms[0] = 0
usProtXParms[1] = 0