netdev - Re: What ixgbe devices support HWTSTAMP_FILTER

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Message-Id: <42EB154F-A50F-4CB6-A8CD-06B7E61AA811@alum.mit.edu>
Date:	Sat, 14 May 2016 11:55:11 -0700
From:	Guy Harris <guy@...m.mit.edu>
To:	jeffrey.t.kirsher@...el.com
Cc:	Network Development <netdev@...r.kernel.org>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	"Tantilov, Emil S" <emil.s.tantilov@...el.com>
Subject: Re: What ixgbe devices support HWTSTAMP_FILTER_ALL for hardware time stamping?

On May 14, 2016, at 12:41 AM, Jeff Kirsher <tarbal@...il.com> wrote:

> Are you planning to produce a patch or are you wanting us to do the work to
> fix the issue?  Just asking so that work is not duplicated.

I'm willing to produce the patches, although

	1) I don't currently have a platform set up to test whether they compile;

	2) I don't have hardware on which to test whether they work (the person who submitted

		https://github.com/the-tcpdump-group/tcpdump/issues/393#issuecomment-218442072

	   does, although he doesn't have X550 hardware - I guess he wants hardware time stamping on an 82599EB; it sounds as if that won't work, and his patch to the driver won't give him what he wants);

	3) patches from the driver maintainers might 1) be more likely to do the right thing and 2) be more likely to be accepted.