linux-kernel - RE: [Patch v2 00/19] CIFS: Implement SMBDirect

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Message-ID: <MWHPR21MB019081F64C50E08043286EE3CE870@MWHPR21MB0190.namprd21.prod.outlook.com>
Date:   Mon, 21 Aug 2017 19:50:40 +0000
From:   Long Li <longli@...rosoft.com>
To:     Steve Wise <swise@...ngridcomputing.com>,
        'Steve French' <sfrench@...ba.org>,
        "linux-cifs@...r.kernel.org" <linux-cifs@...r.kernel.org>,
        "samba-technical@...ts.samba.org" <samba-technical@...ts.samba.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        'Christoph Hellwig' <hch@...radead.org>,
        "Tom Talpey" <ttalpey@...rosoft.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>
Subject: RE: [Patch v2 00/19] CIFS: Implement SMBDirect



> -----Original Message-----
> From: Steve Wise [mailto:swise@...ngridcomputing.com]
> Sent: Monday, August 21, 2017 12:15 PM
> To: Long Li <longli@...rosoft.com>; 'Steve French' <sfrench@...ba.org>;
> linux-cifs@...r.kernel.org; samba-technical@...ts.samba.org; linux-
> kernel@...r.kernel.org; linux-rdma@...r.kernel.org; 'Christoph Hellwig'
> <hch@...radead.org>; Tom Talpey <ttalpey@...rosoft.com>; Matthew
> Wilcox <mawilcox@...rosoft.com>
> Cc: Long Li <longli@...rosoft.com>
> Subject: RE: [Patch v2 00/19] CIFS: Implement SMBDirect
> 
> [You don't often get email from SWISE@...NGRIDCOMPUTING.COM. Learn
> why this is important at http://aka.ms/LearnAboutSenderIdentification.]
> 
> >
> > From: Long Li <longli@...rosoft.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://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmsdn
> > .microsoft.com%2Fen-
> &data=02%7C01%7Clongli%40microsoft.com%7C6082b57a9
> >
> 13844901b5b08d4e8c8ec1d%7C72f988bf86f141af91ab2d7cd011db47%7C1%7
> C0%7C6
> >
> 36389397044862458&sdata=MnF3ljWT9cTEfFZWmj7zVADgNSYdMFROK%2B
> WXAdfG%2FB
> > I%3D&reserved=0
> > us/library/hh536346.aspx).
> >
> > The patch v2 added RDMA read/write via memory registration, and
> > addressed feedbacks on v1.
> >
> 
> Hey Long,
> 
> What testing have you done with this on the various rdma transports?  Does
> it work over IB, RoCE, and iWARP providers?

Hi Steve,

Currently all the tests have been done over Infiniband. We haven't tested on RoCE or iWARP, but planned to do it in the following weeks.

Long

> 
> Thanks,
> 
> Steve.
>