netdev - Re: [PATCH v2 0/5] Add support for DMA timestamp for non-PTP packets

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Date:   Tue, 18 Oct 2022 04:45:17 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@...el.com>
Cc:     intel-wired-lan@...osl.org, netdev@...r.kernel.org,
        kuba@...nel.org, davem@...emloft.net, edumazet@...gle.com,
        aravindhan.gunasekaran@...el.com, gal@...dia.com, saeed@...nel.org,
        leon@...nel.org, michael.chan@...adcom.com, andy@...yhouse.net,
        vinicius.gomes@...el.com
Subject: Re: [PATCH v2 0/5] Add support for DMA timestamp for non-PTP packets

On Tue, Oct 18, 2022 at 09:07:28AM +0800, Muhammad Husaini Zulkifli wrote:

> With these additional socket options, users can continue to utilise
> HW timestamps for PTP while specifying non-PTP packets to use DMA
> timestamps if the NIC can support them.

What is the use case for reporting DMA transmit time?

How is this better than using SOF_TIMESTAMPING_TX_SOFTWARE ?


Thanks,
Richard