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Thu, 14 May 2026 02:53:39 -0700 (PDT) Received: from [192.168.88.32] ([216.128.9.106]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48fd6498a7esm50954115e9.4.2026.05.14.02.53.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 14 May 2026 02:53:39 -0700 (PDT) Message-ID: Date: Thu, 14 May 2026 11:53:37 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next 0/8] net/mlx5: Prepare eswitch infrastructure for satellite PF support To: Moshe Shemesh , Jakub Kicinski , Tariq Toukan Cc: Eric Dumazet , Andrew Lunn , "David S. Miller" , Saeed Mahameed , Leon Romanovsky , Mark Bloch , Akiva Goldberger , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Gal Pressman , Dragos Tatulea References: <20260510053448.326823-1-tariqt@nvidia.com> <20260513192539.7fd96592@kernel.org> <639580c8-f93f-4945-acfa-ff116b841f6a@nvidia.com> From: Paolo Abeni Content-Language: en-US In-Reply-To: <639580c8-f93f-4945-acfa-ff116b841f6a@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 5/14/26 9:56 AM, Moshe Shemesh wrote: > On 5/14/2026 5:25 AM, Jakub Kicinski wrote: >> External email: Use caution opening links or attachments >> >> >> On Sun, 10 May 2026 08:34:40 +0300 Tariq Toukan wrote: >>> This series prepares the mlx5 eswitch command interface and vport >>> infrastructure for satellite PF support. >> >> Could you perhaps start by explaining what "satellite PF" is? >> And how it differs from "socket direct" > > Satellite PF is another type of Physical Function, its role and > privileges are similar to the host PF, but unlike host PF the Satellite > PF is on the DPU and not on another host. So it's kind of "Satellite" > for the ECPF which is also on the DPU. > > The next patchset will introduce the Satellite PF, while this patchset > only does some preparations. Small changes to prepare the eswitch to > manage another PF. > > While Socket Direct is a hardware PCIe topology, that adds another PCIe > link to the NIC, the Satellite PF is just logical entity, by firmware > configuration, no hardware change. My understanding is that Jakub wants you to capture the above info in the cover letter. Thanks, Paolo