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From: Thomas Monjalon <thomas@monjalon.net>
To: Hongzhi Guo <guohongzhi1@huawei.com>
Cc: Morten Brørup <mb@smartsharesystems.com>,
	dev@dpdk.org, stable@dpdk.org, stephen@networkplumber.org,
	konstantin.ananyev@intel.com, ferruh.yigit@intel.com,
	nicolas.chautru@intel.com, zhoujingbin@huawei.com,
	chenchanghu@huawei.com, jerry.lilijun@huawei.com,
	haifeng.lin@huawei.com, Olivier Matz <olivier.matz@6wind.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] net: fix unneeded replacement of 0 by ffff for TCP checksum
Date: Fri, 10 Jul 2020 23:03:25 +0200
Message-ID: <5800181.0yhA9BG2Ld@thomas> (raw)
In-Reply-To: <20200710144059.GF5869@platinum>

10/07/2020 16:40, Olivier Matz:
> > > > > > > On Fri, Jul 10, 2020 at 02:55:51PM +0800, Hongzhi Guo wrote:
> > > > > > > > Per RFC768:
> > > > > > > > If the computed checksum is zero, it is transmitted as all
> > > ones.
> > > > > > > > An all zero transmitted checksum value means that the
> > > transmitter
> > > > > > > > generated no checksum.
> > > > > > > >
> > > > > > > > RFC793 for TCP has no such special treatment for the checksum
> > > of
> > > > > > > zero.
> > > > > > > >
> > > > > > > > Fixes: 6006818cfb26 ("net: new checksum functions")
> > > > > > > > Cc: stable@dpdk.org
> > > > > > > >
> > > > > > > > Signed-off-by: Hongzhi Guo <guohongzhi1@huawei.com>
[...]
> After reading again your arguments, I think I prefer your first
> proposal, which was also Hongzhi's initial submission:
> 
>    - *   The complemented checksum to set in the IP packet
>    - *   or 0 on error
>    + *   The complemented checksum to set in the IP packet.
> 
> Thomas, do you want to to resubmit with this change?

Applied with all changes in comments.





      parent reply	other threads:[~2020-07-10 21:03 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-10  6:55 [dpdk-stable] " Hongzhi Guo
2020-07-10 12:41 ` Olivier Matz
2020-07-10 13:10   ` Morten Brørup
2020-07-10 13:16     ` Olivier Matz
2020-07-10 13:29       ` Morten Brørup
2020-07-10 13:41         ` Olivier Matz
2020-07-10 13:56           ` [dpdk-stable] [dpdk-dev] " Morten Brørup
2020-07-10 14:40             ` Olivier Matz
2020-07-10 14:52               ` Olivier Matz
2020-07-10 21:03               ` Thomas Monjalon [this message]

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