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Fri, 05 Feb 2021 10:06:10 -0800 (PST) Received: from amorenoz.users.ipa.redhat.com ([94.73.56.18]) by smtp.gmail.com with ESMTPSA id y63sm9275908wmd.21.2021.02.05.10.06.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Feb 2021 10:06:09 -0800 (PST) Subject: Re: [PATCH iproute2-next v3 0/5] Add vdpa device management tool To: Parav Pandit , Jason Wang , "virtualization@lists.linux-foundation.org" , "netdev@vger.kernel.org" , "dsahern@gmail.com" , "stephen@networkplumber.org" , "mst@redhat.com" References: <20210122112654.9593-3-parav@nvidia.com> <20210202103518.3858-1-parav@nvidia.com> <99106d07-1730-6ed8-c847-0400be0dcd57@redhat.com> <1d1ff638-d498-6675-ead5-6e09213af3a8@redhat.com> <0017c3d7-9b04-d26c-94e2-485e4da6a778@redhat.com> From: Adrian Moreno Message-ID: Date: Fri, 5 Feb 2021 19:06:09 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 2/5/21 6:53 PM, Parav Pandit wrote: > > >> From: Jason Wang >> Sent: Friday, February 5, 2021 9:11 AM >> >> >> On 2021/2/4 下午7:15, Adrian Moreno wrote: >>> Sorry I have not followed this work as close as I would have wanted. >>> Some questions below. >>> >>> On 2/4/21 4:16 AM, Jason Wang wrote: >>>> On 2021/2/2 下午6:35, Parav Pandit wrote: >>>>> Linux vdpa interface allows vdpa device management functionality. >>>>> This includes adding, removing, querying vdpa devices. >>>>> >>>>> vdpa interface also includes showing supported management devices >>>>> which support such operations. >>>>> >>>>> This patchset includes kernel uapi headers and a vdpa tool. >>>>> >>>>> examples: >>>>> >>>>> $ vdpa mgmtdev show >>>>> vdpasim: >>>>>    supported_classes net >>>>> >>>>> $ vdpa mgmtdev show -jp >>>>> { >>>>>      "show": { >>>>>          "vdpasim": { >>>>>              "supported_classes": [ "net" ] >>>>>          } >>>>>      } >>>>> } >>>>> >>> How can a user establish the relationship between a mgmtdev and it's >>> parent device (pci vf, sf, etc)? >> >> >> Parav should know more but I try to answer. >> >> I think there should be BDF information in the mgmtdev show command if >> the parent is a PCI device, or we can simply show the parent here? >> > Yes, it is present in the mgmtdev show command. > I should have added the example from the kernel cover letter here. > Link to the kernel cover letter is at > > An example for real PCI PF,VF,SF device looks like below. > I will cover below example to the v4 cover letter while addressing David's comment for header file relocation. > > $ vdpa mgmtdev list > pci/0000:03.00:0 > supported_classes > net > pci/0000:03.00:4 > supported_classes > net > auxiliary/mlx5_core.sf.8 > supported_classes > net > > [1] https://lore.kernel.org/netdev/20210105103203.82508-1-parav@nvidia.com/ > Thanks Parav -- Adrián Moreno