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Re: [tsvwg] UDP Options: on forcing the use of UDP CS=0 in connection with FRAG+LITE

Joe Touch <touch@strayalpha.com> Tue, 02 July 2019 01:55 UTC

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From: Joe Touch <touch@strayalpha.com>
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Date: Mon, 01 Jul 2019 18:55:02 -0700
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To: "C. M. Heard" <heard@pobox.com>
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Subject: Re: [tsvwg] UDP Options: on forcing the use of UDP CS=0 in connection with FRAG+LITE
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> On Jul 1, 2019, at 5:42 PM, C. M. Heard <heard@pobox.com> wrote:
> 
> The original complaint was:
> 
>> The solution below doesn't appear to avoid copying/moving large amounts
>> of data.
>> 
>> At a minimum, can you address #2? If we can do this without moving
>> around a lot of data, it might be viable.
> 
> I believe I've addressed that point.

The assumption was ‘to place the fragments in order using existing efficiencies,’ which assumed the data starts at the beginning of the conventional UDP area in each fragment. That’s what LITE+FRAG does.. You need to copy to achieve that.

Joe

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