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From: Olivier MATZ <olivier.matz@6wind.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	 "Liu, Jijiang" <jijiang.liu@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3 0/3] enhance TX checksum command and csum forwarding engine
Date: Fri, 09 Jan 2015 11:45:18 +0100
Message-ID: <54AFB13E.2080200@6wind.com> (raw)
In-Reply-To: <2601191342CEEE43887BDE71AB977258213D3897@irsmsx105.ger.corp.intel.com>

Hi,

Thank you Jijiang for taking the time to get back on this.

On 01/08/2015 11:54 AM, Ananyev, Konstantin wrote:
>> And we are able to test all of cases in  http://dpdk.org/ml/archives/dev/2014-December/009213.html
>>
>> Test case A:
>>
>> tx_checksum set sw-tunnel-mode off
>> tx_checksum set hw-tunnel-mode off
>> tx_checksum set  ip   hw
>>
>> test case B.1:
>>
>> tx_checksum set sw-tunnel-mode on
>> tx_checksum set hw-tunnel-mode on
>> tx_checksum set  ip   hw
>> tx_checksum set  tcp   hw
>>
>> test case B.2:
>>
>> tx_checksum set sw-tunnel-mode on
>> tx_checksum set hw-tunnel-mode off
>> tx_checksum set  ip   hw
>>
>> test case C:
>>
>> tx_checksum set sw-tunnel-mode on
>> tx_checksum set hw-tunnel-mode on
>> tx_checksum set  outer-ip   hw
>> tx_checksum set  ip   hw
>> tx_checksum set  tcp   hw

There is something I don't understand. A forward engine takes any packet
in input and output. Packets can be of any kind (eth/arp, eth/ip/tcp,
eth/vlan/ip/udp/vxlan/eth/ip/tcp, ...)

Today, the behavior of csum forward engine is defined for any kind of
packet. See the description and the table in
http://dpdk.org/ml/archives/dev/2014-December/009886.html

All packets that are not "Ether[/vlan]/(IP|IP6)/(UDP|TCP|SCTP)" or
"Ether[/vlan]/(IP|IP6)/UDP/VxLAN/Ether[/vlan]/(IP|IP6)/UDP|TCP|SCTP"
are forwarded without beeing modified.

In my understanding, the use-case you are describing correspond to
specific packet types. So a configuration would work only for one
packet format only. Is it correct?

I think that the test-pmd command API should define a behavior for
the csum forward engine for any packet. What do you think?

Regards,
Olivier

  reply	other threads:[~2015-01-09 10:45 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-10  1:03 Jijiang Liu
2014-12-10  1:03 ` [dpdk-dev] [PATCH v3 1/3] librte_ether:add outer IP offload capability flag Jijiang Liu
2014-12-11 10:33   ` Olivier MATZ
2014-12-10  1:03 ` [dpdk-dev] [PATCH v3 2/3] i40e:support outer IPv4 checksum capability Jijiang Liu
2014-12-11 10:34   ` Olivier MATZ
2014-12-10  1:03 ` [dpdk-dev] [PATCH v3 3/3] app/testpmd:change tx_checksum command and csum forwarding engine Jijiang Liu
2014-12-11 10:52   ` Olivier MATZ
2014-12-12  4:06     ` Liu, Jijiang
2014-12-11 10:17 ` [dpdk-dev] [PATCH v3 0/3] enhance TX checksum " Olivier MATZ
2014-12-12  3:48   ` Liu, Jijiang
2014-12-12 16:33     ` Olivier MATZ
2015-01-07  2:03       ` Liu, Jijiang
2015-01-07  9:59         ` Ananyev, Konstantin
2015-01-07 11:39           ` Liu, Jijiang
2015-01-07 12:07             ` Ananyev, Konstantin
2015-01-08  8:51               ` Liu, Jijiang
2015-01-08 10:54                 ` Ananyev, Konstantin
2015-01-09 10:45                   ` Olivier MATZ [this message]
2015-01-12  3:41                     ` Liu, Jijiang
2015-01-12 11:43                       ` Olivier MATZ
2015-01-13  3:04                         ` Liu, Jijiang
2015-01-13  9:55                           ` Olivier MATZ
2015-01-14  3:01                             ` Liu, Jijiang
2015-01-15 13:31                               ` Ananyev, Konstantin
2015-01-16 17:27                                 ` Olivier MATZ
2015-01-19 13:04                                   ` Ananyev, Konstantin
2015-01-19 14:38                                     ` Olivier MATZ
2015-01-20  1:12                                       ` Ananyev, Konstantin
2015-01-20 12:39                                         ` Olivier MATZ
2015-01-20 15:18                                           ` Thomas Monjalon
2015-01-20 17:10                                             ` Stephen Hemminger
2015-01-20 17:23                                           ` Ananyev, Konstantin
2015-01-20 18:15                                             ` Olivier MATZ
2015-01-21  3:12                                               ` Liu, Jijiang
2015-01-21 15:25                                                 ` Olivier MATZ
2015-01-21 16:28                                                   ` Ananyev, Konstantin
2015-01-21 17:13                                                     ` Olivier MATZ
2015-01-26  4:13                                                   ` Ananyev, Konstantin
2015-01-26  6:02                                                     ` Liu, Jijiang
2015-01-26 14:07                                                       ` Olivier MATZ
2015-01-26 14:15                                                         ` Ananyev, Konstantin
2015-01-27  8:34                                                           ` Olivier MATZ
2015-01-27 15:26                                                             ` Ananyev, Konstantin
2015-01-21 19:44                                                 ` Stephen Hemminger
2015-01-22  1:40                                                   ` Liu, Jijiang
2015-01-21  8:01                                               ` Liu, Jijiang
2015-01-21  9:10                                                 ` Olivier MATZ
2015-01-21 11:52                                                   ` Ananyev, Konstantin
2015-01-07 13:06 ` Qiu, Michael

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