From: William Herrin <bill@herrin.us>
To: "N. Benes" <nbenes@eso.org>
Cc: users@dpdk.org
Subject: Re: [dpdk-users] checksums?
Date: Fri, 5 Apr 2019 13:52:35 -0700 [thread overview]
Message-ID: <CAP-guGUxgro0GLauDHzyr400bi0G_0RgubupTzO4TuHB7mespQ@mail.gmail.com> (raw)
In-Reply-To: <59ccc981-0231-afd4-5717-45fbaff09644@eso.org>
On Fri, Apr 5, 2019 at 2:31 AM N. Benes <nbenes@eso.org> wrote:
> William Herrin:
> > Which I understand to mean that +0 (0x0000) is a legal value in an IPv4
> > checksum field, but -0 (0xffff) is not.
> >
> > Is this a bug?
>
> Related threads:
>
> https://mails.dpdk.org/archives/users/2019-March/004021.html
> https://mails.dpdk.org/archives/dev/2019-April/128473.html
Ah, my google-fu failed me. Thanks for the refs!
So it is a bug and Olivier Matz is writing a patch. Few receivers stumble
when presented with -0 as a checksum so it shouldn't be causing much of a
problem but I did stumble across this long-ago conversation:
https://mailarchive.ietf.org/arch/msg/ietf/2EZyjq9tiQvyfyAXgPMKQ7MtToU
https://mailarchive.ietf.org/arch/msg/ietf/36lReuBvahPjxVTth1wpm7kt7zs
Regards,
Bill Herrin
--
William Herrin ................ herrin@dirtside.com bill@herrin.us
Dirtside Systems ......... Web: <http://www.dirtside.com/>
prev parent reply other threads:[~2019-04-05 20:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-05 1:29 William Herrin
2019-04-05 9:31 ` N. Benes
2019-04-05 20:52 ` William Herrin [this message]
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