linux-kernel - [RFC PATCH rdma-next 10/10] RDMA/rxe: Add RD FLUSH service support

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Date:   Tue, 28 Dec 2021 16:07:17 +0800
From:   Li Zhijian <lizhijian@...fujitsu.com>
To:     <linux-rdma@...r.kernel.org>, <zyjzyj2000@...il.com>,
        <jgg@...pe.ca>, <aharonl@...dia.com>, <leon@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <mbloch@...dia.com>,
        <liweihang@...wei.com>, <liangwenpeng@...wei.com>,
        <yangx.jy@...fujitsu.com>, <rpearsonhpe@...il.com>,
        <y-goto@...itsu.com>, Li Zhijian <lizhijian@...fujitsu.com>
Subject: [RFC PATCH rdma-next 10/10] RDMA/rxe: Add RD FLUSH service support

Although the SPEC said FLUSH is supported by RC/RD/XRC services, XRC has
not been supported by the rxe.

So XRC FLUSH will not be supported until rxe implements XRC service.

Signed-off-by: Li Zhijian <lizhijian@...fujitsu.com>
---
I have not setup a RD environment to test this protocol
---
 drivers/infiniband/sw/rxe/rxe_opcode.c | 20 ++++++++++++++++++++
 include/rdma/ib_pack.h                 |  1 +
 2 files changed, 21 insertions(+)

diff --git a/drivers/infiniband/sw/rxe/rxe_opcode.c b/drivers/infiniband/sw/rxe/rxe_opcode.c
index d61c8b354af4..0d5f555f5ec5 100644
--- a/drivers/infiniband/sw/rxe/rxe_opcode.c
+++ b/drivers/infiniband/sw/rxe/rxe_opcode.c
@@ -919,6 +919,26 @@ struct rxe_opcode_info rxe_opcode[RXE_NUM_OPCODE] = {
 						+ RXE_RDETH_BYTES,
 		}
 	},
+	[IB_OPCODE_RD_RDMA_FLUSH]			= {
+		.name	= "IB_OPCODE_RD_RDMA_FLUSH",
+		.mask	= RXE_RDETH_MASK | RXE_FETH_MASK | RXE_RETH_MASK
+				| RXE_FLUSH_MASK | RXE_START_MASK
+				| RXE_END_MASK | RXE_REQ_MASK,
+		.length = RXE_BTH_BYTES + RXE_FETH_BYTES + RXE_RETH_BYTES,
+		.offset = {
+			[RXE_BTH]	= 0,
+			[RXE_RDETH]	= RXE_BTH_BYTES,
+			[RXE_FETH]	= RXE_BTH_BYTES
+							+ RXE_RDETH_BYTES,
+			[RXE_RETH]	= RXE_BTH_BYTES
+							+ RXE_RDETH_BYTES
+							+ RXE_FETH_BYTES,
+			[RXE_PAYLOAD]	= RXE_BTH_BYTES
+							+ RXE_RDETH_BYTES
+							+ RXE_FETH_BYTES
+							+ RXE_RETH_BYTES,
+		}
+	},
 
 	/* UD */
 	[IB_OPCODE_UD_SEND_ONLY]			= {
diff --git a/include/rdma/ib_pack.h b/include/rdma/ib_pack.h
index d19edb502de6..40568a33ead8 100644
--- a/include/rdma/ib_pack.h
+++ b/include/rdma/ib_pack.h
@@ -151,6 +151,7 @@ enum {
 	IB_OPCODE(RD, ATOMIC_ACKNOWLEDGE),
 	IB_OPCODE(RD, COMPARE_SWAP),
 	IB_OPCODE(RD, FETCH_ADD),
+	IB_OPCODE(RD, RDMA_FLUSH),
 
 	/* UD */
 	IB_OPCODE(UD, SEND_ONLY),
-- 
2.31.1