> -----Original Message----- > From: Long Li [mailto:longli@xxxxxxxxxxxxxxxxxxxxxx] > Sent: Tuesday, August 29, 2017 12:29 PM > To: Steve French <sfrench@xxxxxxxxx>; linux-cifs@xxxxxxxxxxxxxxx; samba- > technical@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux- > rdma@xxxxxxxxxxxxxxx; Christoph Hellwig <hch@xxxxxxxxxxxxx>; Tom Talpey > <ttalpey@xxxxxxxxxxxxx>; Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> > Cc: Long Li <longli@xxxxxxxxxxxxx> > Subject: [Patch v3 00/19] CIFS: Implement SMB Direct > > From: Long Li <longli@xxxxxxxxxxxxx> > > 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://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmsdn > .microsoft.com%2Fen- > us%2Flibrary%2Fhh536346.aspx&data=02%7C01%7Clongli%40microsoft.com > %7C73e721d48ac0402f414208d4ef1470f2%7C72f988bf86f141af91ab2d7cd011 > db47%7C1%7C0%7C636396318489728526&sdata=3ES4XY3qXqUVEJ37YUHlMJ > QWuxFeljzOEMhGXhmO2i0%3D&reserved=0). > > 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. I received some requests about testing the patch. Thank you for help testing. A snapshot of the development kernel with the patch set is at: https://github.com/longlimsft/linux-next/tree/patch_v3 During development, it is tested on Infiniband with Mellanox ConnectX-3. > > Long Li (19): > CIFS: Add rdma mount option > CIFS: SMBD: Add SMBDirect protocol and transport constants > CIFS: SMBD: Implement SMBDirect transport > CIFS: SMBD: Add SMBDirect transport to SMB connection and Makefile > CIFS: SMBD: Connect to SMBDirect session > CIFS: SMBD: Reconnect to SMBDirect session > CIFS: SMBD: Destroy SMBDirect session on shutdown or umount > CIFS: SMBD: Set SMBDirect maximum read or write size for I/O > CIFS: SMBD: Receive data from SMBDirect > CIFS: SMBD: Send data through SMBDirect > CIFS: SMBD: Define memory registration for I/O data > CIFS: SMBD: Fix the definition for SMB2_CHANNEL_RDMA_V1_INVALIDATE > CIFS: SMBD: Implement SMB write via RDMA read through memory > registration > CIFS: SMBD: Deregister memory on finishing SMB write > 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: Implement SMB read via RDMA write through memory > registration > CIFS: SMBD: Deregister memory when finishing SMB read > CIFS: SMBD: Add SMBDirect debug counters > > fs/cifs/Makefile | 2 +- > fs/cifs/cifs_debug.c | 84 ++ > 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 | 2639 > ++++++++++++++++++++++++++++++++++++++++++++++++++ > fs/cifs/smbdirect.h | 324 +++++++ > fs/cifs/transport.c | 7 + > 14 files changed, 3260 insertions(+), 20 deletions(-) create mode 100644 > fs/cifs/smbdirect.c create mode 100644 fs/cifs/smbdirect.h > > -- > 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
