linux-kernel - Re: [PATCH] rdma: move the ib_wr

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Message-ID: <11f85f780435a5ded567bc8559d7c770d3bc4464.camel@intel.com>
Date:   Mon, 17 Sep 2018 20:38:16 +0000
From:   "Walker, Benjamin" <benjamin.walker@...el.com>
To:     "Howell, Seth" <seth.howell@...el.com>,
        "jgg@...pe.ca" <jgg@...pe.ca>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "monis@...lanox.com" <monis@...lanox.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "dledford@...hat.com" <dledford@...hat.com>
Subject: Re: [PATCH] rdma: move the ib_wr_opcode enum to include/uapi

On Mon, 2018-08-20 at 14:32 -0700, Howell, Seth wrote:
> Hi Jason,
> 
> I apologize for the few days of radio silence on this one. I was able to apply
> your patch on my local configuration and can confirm that it fixes the issue
> of send with invalidate being improperly mapped between a user-space process
> and the kernel rxe driver.
> 
> Thanks again for your time and help.
> 
> Seth Howell
> 
> -----Original Message-----
> From: linux-rdma-owner@...r.kernel.org [mailto:
> linux-rdma-owner@...r.kernel.org] On Behalf Of Jason Gunthorpe
> Sent: Thursday, August 16, 2018 11:01 AM
> To: Howell, Seth <seth.howell@...el.com>
> Cc: Walker, Benjamin <benjamin.walker@...el.com>; Doug Ledford <
> dledford@...hat.com>; linux-rdma@...r.kernel.org; linux-kernel@...r.kernel.org
> ; Moni Shoua <monis@...lanox.com>
> Subject: Re: [PATCH] rdma: move the ib_wr_opcode enum to include/uapi
> 
> On Wed, Aug 15, 2018 at 11:27:36PM +0000, Howell, Seth wrote:
> 
> > Thank you for taking the time to review this issue. The patch you 
> > submitted will definitely fix the problem I was facing.
> 
> Can you test it to be certain?
> 
> Thanks,
> Jason

We've recently run into this same issue on i40iw, which appears to make the same
mistake of using the kernel version of the enum instead of the userspace
version. This proposed patch will address it there too. What's the current
status here? Can it be merged? I just checked and do not see it merged to Linux
master.

Running a user-space NVMe-oF target with RDMA and a recent Linux kernel
initiator is not currently possible on rxe or i40iw because it requires send
with invalidate support.

Thanks,
Ben