linux-kernel - Re: [PATCH v2 net-next 2/4] vmxnet3: add latency measurement support in vmxnet3

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Message-ID: <20240605135106.GM791188@kernel.org>
Date: Wed, 5 Jun 2024 14:51:06 +0100
From: Simon Horman <horms@...nel.org>
To: Ronak Doshi <ronak.doshi@...adcom.com>
Cc: netdev@...r.kernel.org,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 net-next 2/4] vmxnet3: add latency measurement support
 in vmxnet3

On Fri, May 31, 2024 at 12:30:47PM -0700, Ronak Doshi wrote:
> This patch enhances vmxnet3 to support latency measurement.
> This support will help to track the latency in packet processing
> between guest virtual nic driver and host. For this purpose, we
> introduce a new timestamp ring in vmxnet3 which will be per Tx/Rx
> queue. This ring will be used to carry timestamp of the packets
> which will be used to calculate the latency.
> 
> User can enable latency measurement using realtime knob in vnic
> setting in VCenter.
> 
> Signed-off-by: Ronak Doshi <ronak.doshi@...adcom.com>
> Acked-by: Guolin Yang <guolin.yang@...adcom.com>

Reviewed-by: Simon Horman <horms@...nel.org>