DRBx entry for invoking a RoCE doorbell operation

Entry:
DRBx
VIT option:
CIA
Event:
Invocation of a Remote Direct Memory Access (RDMA) over Converged Ethernet (RoCE) doorbell operation, as part of Shared Memory Communications over Remote Direct Memory Access (SMC-R) processing.
VIT processing module:
ISTITCSH

This trace record is written upon completion of a RoCE doorbell operation.

The contents of the trace record are described after the figure.
Byte (hex)
Contents
00–03
Record ID:
  • C'DRBC' for CQ doorbell
  • C'DRBE' for EQ doorbell
  • C'DRBR' for Receive doorbell
  • C'DRBS' for Send doorbell
04
ID is the primary address space ID (ASID). This field is 0 if the ASID is greater than X'FF'.
05
0
06–07
Array index
08–0F
Doorbell-related data
10–17
Address of the PFCTE
18–1F
Address of the control block that is associated with this doorbell activity