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Subject[Patch v4 00/22] CIFS: Implement SMBDirect
Date
From: Long Li <longli@microsoft.com>

Starting with SMB2 dialect 3.0, Microsoft introduced SMBDirect transport
protocol for transferring upper layer (SMB2) payload over RDMA via Infiniband,
RoCE or iWARP. The prococol is published in [MS-SMBD]
(https://msdn.microsoft.com/en-us/library/hh536346.aspx).

Patch v2 added RDMA read/write via memory registration, and addressed
feedbacks on v1.

Patch v3 improved performance by introducing an additional queue for handling
empty packets and reducing lock contention on IRQ path. Also added light
weight profiling by reading TSC and addressed feedbacks on v2.

Patch v4 fixed connectivity issues with iWAPR devices and addressed comments.

Long Li (22):
CIFS: SMBD: Add SMBDirect protocol initial values and constants
CIFS: SMBD: Establish SMBDirect connection
CIFS: SMBD: export protocol initial values
CIFS: SMBD: Add rdma mount option
CIFS: SMBD: Implement function to create a SMBDirect connection
CIFS: SMBD: Upper layer connects to SMBDirect session
CIFS: SMBD: Implement function to reconnect to a SMBDirect transport
CIFS: SMBD: Upper layer reconnects to SMBDirect session
CIFS: SMBD: Implement function to destroy a SMBDirect connection
CIFS: SMBD: Upper layer destroys SMBDirect session on shutdown or
umount
CIFS: SMBD: Set SMBDirect maximum read or write size for I/O
CIFS: SMBD: Implement function to receive data via RDMA receive
CIFS: SMBD: Upper layer receives data via RDMA receive
CIFS: SMBD: Implement function to send data via RDMA send
CIFS: SMBD: Upper layer sends data via RDMA send
CIFS: SMBD: Fix the definition for SMB2_CHANNEL_RDMA_V1_INVALIDATE
CIFS: SMBD: Implement RDMA memory registration
CIFS: SMBD: Upper layer performs SMB write via RDMA read through
memory registration
CIFS: SMBD: Add parameter rdata to smb2_new_read_req
CIFS: SMBD: Read correct returned data length for RDMA write (SMB
read) I/O
CIFS: SMBD: Upper layer performs SMB read via RDMA write through
memory registration
CIFS: SMBD: Add SMBDirect debug counters

fs/cifs/Makefile | 2 +-
fs/cifs/cifs_debug.c | 159 +++
fs/cifs/cifsfs.c | 2 +
fs/cifs/cifsglob.h | 17 +-
fs/cifs/cifssmb.c | 10 +-
fs/cifs/connect.c | 46 +-
fs/cifs/file.c | 10 +
fs/cifs/smb1ops.c | 2 +-
fs/cifs/smb2ops.c | 21 +-
fs/cifs/smb2pdu.c | 114 ++-
fs/cifs/smb2pdu.h | 2 +-
fs/cifs/smbdirect.c | 2651 ++++++++++++++++++++++++++++++++++++++++++++++++++
fs/cifs/smbdirect.h | 325 +++++++
fs/cifs/transport.c | 7 +
14 files changed, 3348 insertions(+), 20 deletions(-)
create mode 100644 fs/cifs/smbdirect.c
create mode 100644 fs/cifs/smbdirect.h

--
2.7.4

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