netdev - Re: [PATCH net-next 00/12] sfc: support PTP on 8000 and X2000 series NICs

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Date:   Thu, 25 Jan 2018 16:05:39 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     ecree@...arflare.com
Cc:     linux-net-drivers@...arflare.com, netdev@...r.kernel.org,
        levans@...arflare.com
Subject: Re: [PATCH net-next 00/12] sfc: support PTP on 8000 and X2000
 series NICs

From: Edward Cree <ecree@...arflare.com>
Date: Thu, 25 Jan 2018 17:22:50 +0000

> Starting from the 8000-series (Medford 1), SFC NICs can timestamp TX packets
>  sent through an ordinary DMA queue, rather than a special control-plane
>  operation as in the 7000-series.  Patches 2-8 implement support for this.
> The X2000-series (Medford 2) changes the format of timestamps, from seconds+
>  (2^27)ths to seconds + quarter nanoseconds, as well as changing the shift
>  of the frequency adjustment for increased precision.  Patches 9-12
>  implement support for these changes.
> Patch #1 is an unrelated fix for NAPI budget handling, needed in order for
>  TX completion changes in the later patches to apply cleanly.

Pulled, thanks Edward.