From: Keith Busch <kbusch@kernel.org>
To: Leon Romanovsky <leon@kernel.org>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
Tariq Toukan <tariqt@nvidia.com>, Mark Bloch <mbloch@nvidia.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, Maher Sanalla <msanalla@nvidia.com>
Subject: Re: [PATCH rdma-next 0/6] Add support for TLP emulation
Date: Fri, 27 Feb 2026 14:37:05 -0700 [thread overview]
Message-ID: <aaIOgcfCbRIBlpUO@kbusch-mbp> (raw)
In-Reply-To: <20260225-var-tlp-v1-0-fe14a7ac7731@nvidia.com>
On Wed, Feb 25, 2026 at 04:19:30PM +0200, Leon Romanovsky wrote:
> This series adds support for Transaction Layer Packet (TLP) emulation
> response gateway regions, enabling userspace device emulation software
> to write TLP responses directly to lower layers without kernel driver
> involvement.
>
> Currently, the mlx5 driver exposes VirtIO emulation access regions via
> the MLX5_IB_METHOD_VAR_OBJ_ALLOC ioctl. This series extends that
> ioctl to also support allocating TLP response gateway channels for
> PCI device emulation use cases.
Sorry if this is obvious to people in the know, but could you possibly
give a quick high level description of the use case behind this feature?
I'm just curious what emulation needs are enabled by having access to
this packet level. Thanks!
next prev parent reply other threads:[~2026-02-27 21:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-25 14:19 [PATCH rdma-next 0/6] Add support for TLP emulation Leon Romanovsky
2026-02-25 14:19 ` [PATCH mlx5-next 1/6] net/mlx5: Add TLP emulation device capabilities Leon Romanovsky
2026-02-25 14:19 ` [PATCH mlx5-next 2/6] net/mlx5: Expose TLP emulation capabilities Leon Romanovsky
2026-02-25 14:19 ` [PATCH rdma-next 3/6] RDMA/mlx5: Refactor VAR table to use region abstraction Leon Romanovsky
2026-02-25 14:19 ` [PATCH rdma-next 4/6] RDMA/mlx5: Add TLP VAR region support and infrastructure Leon Romanovsky
2026-02-25 14:19 ` [PATCH rdma-next 5/6] RDMA/mlx5: Add support for TLP VAR allocation Leon Romanovsky
2026-02-25 14:19 ` [PATCH rdma-next 6/6] RDMA/mlx5: Add VAR object query method for cross-process sharing Leon Romanovsky
2026-02-25 14:48 ` [PATCH rdma-next 0/6] Add support for TLP emulation Leon Romanovsky
2026-02-27 1:34 ` Jakub Kicinski
2026-03-02 14:06 ` Leon Romanovsky
2026-02-27 21:37 ` Keith Busch [this message]
2026-03-02 14:04 ` Jason Gunthorpe
2026-03-05 10:34 ` (subset) " Leon Romanovsky
2026-03-05 10:44 ` Leon Romanovsky
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