From: Saeed Mahameed <saeed@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
Leon Romanovsky <leonro@nvidia.com>,
Jason Gunthorpe <jgg@nvidia.com>,
linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
Tariq Toukan <tariqt@nvidia.com>,
Adithya Jayachandran <ajayachandra@nvidia.com>,
Mark Bloch <mbloch@nvidia.com>
Subject: Re: [PATCH mlx5-next] {rdma,net}/mlx5: Query vports mac address from device
Date: Tue, 21 Oct 2025 19:12:21 -0700 [thread overview]
Message-ID: <aPg9hQjpXeR-mJG2@x130> (raw)
In-Reply-To: <20251021164759.2c6a5dc9@kernel.org>
On 21 Oct 16:47, Jakub Kicinski wrote:
>On Wed, 15 Oct 2025 18:40:55 -0700 Saeed Mahameed wrote:
>> Before this patch during either switchdev or legacy mode enablement we
>> cleared the mac address of vports between changes. This change allows us
>> to preserve the vports mac address between eswitch mode changes.
>
>Not knowing what exactly a vport is I can't tell whether this preserves
>MAC addrs of reprs, the uplink, something else?
vport == vf or sf, so VF/SF permanent mac address. It can be set either by
iproute vf interface or devlink function interface. For no obvious reason
we reset it to 0 on switchdev legacy mode changes.. this patch is fixing
that.
Of course vport holds more information than just the mac address, e.g GUID,
mtu, promisc mode, mulitcast mode, and other stuff.
next prev parent reply other threads:[~2025-10-22 2:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-16 1:40 [PATCH mlx5-next] {rdma,net}/mlx5: Query vports mac address from device Saeed Mahameed
2025-10-19 12:59 ` Leon Romanovsky
2025-10-21 23:47 ` Jakub Kicinski
2025-10-22 2:12 ` Saeed Mahameed [this message]
2025-10-23 0:10 ` Jakub Kicinski
2025-10-25 3:21 ` Saeed Mahameed
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