From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>,
Akhil Goyal <akhil.goyal@nxp.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] ip_chksum not updated in ipsec-secgw application
Date: Mon, 18 Jul 2016 15:20:26 +0200 [thread overview]
Message-ID: <3199592.SCxHWQF8fy@xps13> (raw)
In-Reply-To: <61dc3eb1-2522-78f5-871d-442d473ab69d@intel.com>
2016-07-18 13:57, Sergio Gonzalez Monroy:
> On 18/07/2016 13:41, Akhil Goyal wrote:
> > In Ipsec-secgw application, while adding the outer IP header,
> > it seems that the application does not update the checksum value
> > for outbound packets. This result in incorrect ip->checksum in
> > the encrypted packet.
[...]
>
> It is intentional. The application is using IP checksum offload
The correct behaviour is to have a software fallback (using rte_ip.h)
for drivers which do not support checksum offload.
But given it is just an example, it is normal to have this kind of
constraint. However I think it should be explained in its doc.
And a list of tested NICs would be nice to have.
next prev parent reply other threads:[~2016-07-18 13:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-18 12:41 Akhil Goyal
2016-07-18 12:57 ` Sergio Gonzalez Monroy
2016-07-18 13:20 ` Thomas Monjalon [this message]
2016-07-18 13:53 ` Akhil Goyal
2016-07-18 13:57 ` Sergio Gonzalez Monroy
2016-07-18 14:09 ` Thomas Monjalon
2016-07-18 14:25 ` Sergio Gonzalez Monroy
2016-07-18 13:49 ` Akhil Goyal
2016-07-18 14:00 ` Sergio Gonzalez Monroy
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