From: Simon Horman <horms@kernel.org>
To: Tariq Toukan <tariqt@nvidia.com>
Cc: Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Saeed Mahameed <saeed@kernel.org>, Gal Pressman <gal@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
Saeed Mahameed <saeedm@nvidia.com>,
Mark Bloch <mbloch@nvidia.com>,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 5/5] net/mlx5e: RX, Remove unnecessary RQT redirects
Date: Wed, 9 Jul 2025 18:24:46 +0100 [thread overview]
Message-ID: <20250709172446.GF721198@horms.kernel.org> (raw)
In-Reply-To: <1752009387-13300-6-git-send-email-tariqt@nvidia.com>
On Wed, Jul 09, 2025 at 12:16:27AM +0300, Tariq Toukan wrote:
> RQTs (Receive Queue Table) should redirect traffic to the channels' RQs
> when they're active. Otherwise, redirect to the designated "drop RQ".
>
> RQTs are created in "inactive" state, pointing to the "drop RQ".
> In activate and de-activate flows, do not "deactivate" the rest of RQTs
> (beyond the num of channels), as they are already inactive.
>
> This cuts down unnecessary execution of FW commands (MODIFY_RQT), and
> improves the latency of open/close channels or configuration change.
>
> Perf:
> NIC: Connect-X7.
> Configuration: 1 combined channel, max num channels 248.
> Measure time for "interface up + interface down".
>
> Before: 0.313 sec
> After: 0.057 sec (5.5x faster)
>
> 247 MODIFY_RQT commands saved in interface up.
> 247 MODIFY_RQT commands saved in interface down.
>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
> Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2025-07-09 17:24 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-08 21:16 [PATCH net-next 0/5] net/mlx5: misc changes 2025-07-09 Tariq Toukan
2025-07-08 21:16 ` [PATCH net-next 1/5] net/mlx5e: Remove unused VLAN insertion logic in TX path Tariq Toukan
2025-07-09 17:23 ` Simon Horman
2025-07-08 21:16 ` [PATCH net-next 2/5] net/mlx5e: CT: extract a memcmp from a spinlock section Tariq Toukan
2025-07-09 17:24 ` Simon Horman
2025-07-08 21:16 ` [PATCH net-next 3/5] net/mlx5e: Replace recursive VLAN push handling with an iterative loop Tariq Toukan
2025-07-09 17:24 ` Simon Horman
2025-07-10 2:47 ` Jakub Kicinski
2025-07-08 21:16 ` [PATCH net-next 4/5] net/mlx5: Warn when write combining is not supported Tariq Toukan
2025-07-09 17:24 ` Simon Horman
2025-07-08 21:16 ` [PATCH net-next 5/5] net/mlx5e: RX, Remove unnecessary RQT redirects Tariq Toukan
2025-07-09 17:24 ` Simon Horman [this message]
2025-07-10 3:00 ` [PATCH net-next 0/5] net/mlx5: misc changes 2025-07-09 patchwork-bot+netdevbpf
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