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Date: Mon, 8 Jan 2024 15:22:12 -0800
From: Saeed Mahameed <saeed@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "Nelson, Shannon" <shannon.nelson@amd.com>,
	"David S. Miller" <davem@davemloft.net>,
	Paolo Abeni <pabeni@redhat.com>, Eric Dumazet <edumazet@google.com>,
	Saeed Mahameed <saeedm@nvidia.com>, netdev@vger.kernel.org,
	Tariq Toukan <tariqt@nvidia.com>, Armen Ratner <armeng@nvidia.com>,
	Daniel Jurgens <danielj@nvidia.com>
Subject: Re: [net-next 15/15] net/mlx5: Implement management PF Ethernet
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Message-ID: <ZZyDpJamg9gxDnym@x130>
References: <20231221005721.186607-1-saeed@kernel.org>
 <20231221005721.186607-16-saeed@kernel.org>
 <dc44d1cc-0065-4852-8da6-20a4a719a1f3@amd.com>
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 <20240104144446.1200b436@kernel.org>
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On 04 Jan 14:44, Jakub Kicinski wrote:
>On Thu, 21 Dec 2023 14:25:33 -0800 Saeed Mahameed wrote:
>> Maybe we should have made it clear here as well, this management PF just
>> exposes a netdev on the embedded ARM that will be used to communicate
>> with the device onboard BMC via NC-SI, so it meant to be used
>> only by standard tools.
>
>How's that different to any other BMC via NC-SI setup?
>NC-SI is supposed to steal packets which were directed to the wire.
>

This is embedded core switchdev setup, there is no PF representor, only
uplink and VF/SF representors, the term management PF is only FW
terminology, since uplink traffic is controlled by the admin, and uplink
interface represents what goes in/out the wire, the current FW architecture
demands that BMC/NCSI traffic goes through a separate PF that is not the
uplink since the uplink rules are managed purely by the eswitch admin.