From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B8082BB1C; Wed, 5 Jun 2024 13:51:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717595471; cv=none; b=M61AfHsF0wjIZaqQdfVCmBDSUJasGUn8CsIKTWBKaFoqpbAl+F1LabfFTCDgoVZvf9zwcZY6LQF5kzWtcsF8qZFO7N95WO0q9ms5V9eBq+82zZkCFkSAaOr6E4qRcKVJCXIbwwgmngAcMW31ojqHaGkYBFXGAsEK5y9VFf24BuQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717595471; c=relaxed/simple; bh=5LyhUxJv0s2KRQRgg7PUVSJAFVVaLDS/b7y7t0U5DFI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=DhXNqlelT+OWgKfNgeyuE+tBbiMO5/gaLd8WqsRObdLGLy/BHQoLPy38tDGHAcHpJ7eNClT3dabVbXwlVdaW4FTZeFGzM+aBnfdPqfp1WMezOaM0wvYJYIMS33dsWyjliCFGOxDINNR+5GmI3miDeA33ot11wg+1/ia+BdbcYCk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YoX3e5Cb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YoX3e5Cb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4A89EC2BD11; Wed, 5 Jun 2024 13:51:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717595471; bh=5LyhUxJv0s2KRQRgg7PUVSJAFVVaLDS/b7y7t0U5DFI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YoX3e5CbLu3Vh2K52jF0o7iUh0XgHM3xiwkUiIczpFEgzBYnBrV1exKU7n5R62ZvB TFAAPScBsQng/ne8I/871js+odlAFOC0CnObl80gGq1rWiBYzwDTg5pIYhAq2EAPUO ZnuYlS5RqF0Ilf0n5MA/i/5c6fUj4Dqp0Foz9mAM26weGWPzcJZqDyWOsi1gCV+w1P TZ2UbA+8ynvoivP4VCm7BPUp7k7LcW+ftvhH+CV92UAD8b75rC2o1ZQQMZrg+T8+13 GJ7kxSAVU2kjTFR1gwtrAyW+bYLMSGCHhascswDdOO5uU8cJg1diXzDCUPx/fkOt8H gjQPIg5z+UDZQ== Date: Wed, 5 Jun 2024 14:51:06 +0100 From: Simon Horman To: Ronak Doshi Cc: netdev@vger.kernel.org, Broadcom internal kernel review list , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , open list Subject: Re: [PATCH v2 net-next 2/4] vmxnet3: add latency measurement support in vmxnet3 Message-ID: <20240605135106.GM791188@kernel.org> References: <20240531193050.4132-1-ronak.doshi@broadcom.com> <20240531193050.4132-3-ronak.doshi@broadcom.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240531193050.4132-3-ronak.doshi@broadcom.com> 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 > Acked-by: Guolin Yang Reviewed-by: Simon Horman