InfiniBand Network Architecture

RC Message Transfer Primer

The example message Send operation described in “Sending a Message to a Destination CA” on page 47 provided a fairly detailed introduction to the RC transport service.

Table 17-1. RC Packet Opcodes

Bits 7:5	Bits 4:0	Packet Type	Fields That Follow BTH
000RC	00000	SEND First	Data PayLoad
	00001	SEND Middle	Data PayLoad
	00010	SEND Last	Data PayLoad
	00011	SEND Last with Immediate	Immediate Data, Data PayLoad
	00100	SEND Only	Data PayLoad
	00101	SEND Only with Immediate	Immediate Data, Data PayLoad
	00110	RDMA WRITE First	RDMA ETH (RETH), Data PayLoad
	00111	RDMA WRITE Middle	Data PayLoad
	01000	RDMA WRITE Last	Data PayLoad
	01001	RDMA WRITE Last with Immediate	Immediate Data, Data PayLoad
	01010	RDMA WRITE Only	RETH, Data PayLoad
	01011	RDMA WRITE Only with Immediate ...