From: Matthew Hall <mhall@mhcomputing.net>
To: Thomas Monjalon <thomas.monjalon@6wind.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] IPv6 Offload Capabilities
Date: Mon, 5 Jan 2015 21:30:27 -0800 [thread overview]
Message-ID: <20150106053027.GC17455@mhcomputing.net> (raw)
In-Reply-To: <20150106052537.GB17455@mhcomputing.net>
On Mon, Jan 05, 2015 at 09:25:37PM -0800, Matthew Hall wrote:
> The same computation algorithm must be reused to calculate the IPV6
> Pseudoheader checksum when generating ICMPV6, UDPV6, and other L4 protocols
> whose definitions were retroactively modified to include the IPV6
> pseudoheader, that happen to use the same checksum in L4 which IP used in L3.
To clarify, this is the part of the RFC which mentions it:
https://tools.ietf.org/html/rfc2460#section-8.1
Also, somebody else mentioned using TSO (TCP Segmentation Offload).
I did look at it but since it only seemed to work in TCP if I read everything
right, that'd mean I had inconsistent code for IPv4 versus IPv6 stack, and
inconsistent behavior for TCP from that for ICMP and UDP.
I was trying to avoid writing too much of this messy code if possible.
Matthew.
next prev parent reply other threads:[~2015-01-06 5:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-05 7:56 Gal Sagie
2015-01-05 8:09 ` Matthew Hall
2015-01-05 8:36 ` Thomas Monjalon
2015-01-06 5:25 ` Matthew Hall
2015-01-06 5:30 ` Matthew Hall [this message]
2015-01-14 11:29 ` Thomas Monjalon
2015-01-05 8:33 ` Olivier MATZ
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