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From: Ferruh Yigit <ferruh.yigit@intel.com>
To: "Wei Hu (Xavier)" <huwei013@chinasoftinc.com>,
	Wenzhuo Lu <wenzhuo.lu@intel.com>,
	Beilei Xing <beilei.xing@intel.com>,
	Bernard Iremonger <bernard.iremonger@intel.com>,
	Yongseok Koh <yskoh@mellanox.com>,
	Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Pablo de Lara <pablo.de.lara.guarch@intel.com>
Cc: dev@dpdk.org, xavier.huwei@huawei.com
Subject: Re: [dpdk-dev] [PATCH v2 3/4] app/testpmd: fix packet header in txonly mode
Date: Mon, 14 Sep 2020 17:23:38 +0100
Message-ID: <cf9d0848-8001-e66a-97dc-b3daebe87536@intel.com> (raw)
In-Reply-To: <20200820014204.25035-4-huwei013@chinasoftinc.com>

On 8/20/2020 2:42 AM, Wei Hu (Xavier) wrote:
> From: Chengchang Tang <tangchengchang@huawei.com>
> 
> In txonly forward mode, the packet header is fixed by the initial
> setting, including the packet length and checksum. So when the packets
> varies, this may cause a packet header error. Currently, there are two
> methods in txonly mode to randomly change the packets.
> 1. Set txsplit random and txpkts (x[,y]*), the number of segments
>    each packets will be a random value between 1 and total number of
>    segments determined by txpkts settings.
>    The step as follows:
>      a) ./testpmd -w xxx -l xx -n 4 -- -i --rxd xxxx --txd xxxx
>      b) set fwd txonly
>      c) set txsplit rand
>      d) set txpkts 2048,2048,2048,2048
>      e) start
> The nb_segs of the packets sent by testpmd will be 1~4. The real packet
> length will be 2048, 4096, 6144 and 8192. But in fact the packet length
> in ip header and udp header will be fixed by 8178 and 8158.

Although I confirm the patch fixes the ip & udp header packet size for
"txsplit=rand" config,
I am always getting actual packet size wrong, independent from
'txsplit', and it is always first segment size. Am I doing something wrong?


And not related to this patch but why setting 'txpkts' requires "--rxd
xxxx --txd xxxx" options explicitly set? If you are already there can
you also remove this restriction?

> 
> 2. Set txonly-multi-flow. the ip address will be varied to generate
>    multiple flow.
>    The step as follows:
>      a) ./testpmd -w xxx -l xx -n 4 -- -i --txonly-multi-flow
>      b) set fwd txonly
>      c) start
> The ip address of each pkts will change randomly, but since the header
> is fixed, the checksum may be a error value.

+1, I confirm fixing the checksum error.

> 
> Therefore, this patch adds a function to update the packet length and
> check sum in the pkts header when the txsplit mode is set to rand or
> multi-flow is set.
> 
> Fixes: 82010ef55e7c ("app/testpmd: make txonly mode generate multiple flows")
> Fixes: 79bec05b32b7 ("app/testpmd: add ability to split outgoing packets")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
> Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>

<...>


  reply	other threads:[~2020-09-14 16:23 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-18 12:02 [dpdk-dev] [PATCH 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 1/4] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 2/4] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 3/4] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-08-18 12:02 ` [dpdk-dev] [PATCH 4/4] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-08-20  1:42 ` [dpdk-dev] [PATCH v2 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 1/4] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-14 16:13     ` Ferruh Yigit
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 2/4] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-14 16:13     ` Ferruh Yigit
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 3/4] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-14 16:23     ` Ferruh Yigit [this message]
2020-09-17  7:10       ` Chengchang Tang
2020-09-17 11:16         ` Ferruh Yigit
2020-09-17 11:48           ` Chengchang Tang
2020-08-20  1:42   ` [dpdk-dev] [PATCH v2 4/4] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-14 16:31     ` Ferruh Yigit
2020-09-16  9:23       ` Wei Hu (Xavier)
2020-09-16 15:58         ` Ferruh Yigit
2020-09-03  3:19   ` [dpdk-dev] [PATCH v2 0/4] minor fixes for testpmd Wei Hu (Xavier)
2020-09-19 10:47 ` [dpdk-dev] [PATCH v3 0/6] " Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 1/6] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-22 14:49     ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 2/6] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 3/6] app/testpmd: remove restriction on txpkts set Wei Hu (Xavier)
2020-09-22 14:51     ` Ferruh Yigit
2020-09-23  3:14       ` Wei Hu (Xavier)
2020-09-23 11:57         ` Wei Hu (Xavier)
2020-09-23 16:59           ` Ferruh Yigit
2020-09-24  6:08             ` Chengchang Tang
2020-09-24 12:19               ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 4/6] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 5/6] app/testpmd: fix valid desc id check Wei Hu (Xavier)
2020-09-22 14:53     ` Ferruh Yigit
2020-09-19 10:47   ` [dpdk-dev] [PATCH v3 6/6] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-25 12:47 ` [dpdk-dev] [PATCH v4 0/6] minor fixes for testpmd Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 1/6] app/testpmd: fix missing verification of port id Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 2/6] app/testpmd: fix VLAN offload configuration when config fail Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 3/6] app/testpmd: remove restriction on txpkts set Wei Hu (Xavier)
2020-11-23 11:50     ` Slava Ovsiienko
2020-11-24 10:27       ` Thomas Monjalon
2020-11-24 12:23         ` Ferruh Yigit
2020-11-24 13:01           ` Kevin Traynor
2020-11-25 14:06           ` Ferruh Yigit
2020-11-26  7:24             ` Slava Ovsiienko
2020-11-26 12:38               ` Ferruh Yigit
2020-11-27 13:05                 ` Slava Ovsiienko
2020-12-02 12:07                   ` Ferruh Yigit
2020-12-03  9:45                     ` Slava Ovsiienko
2020-12-03 10:18                       ` Ferruh Yigit
2020-12-11 15:07                         ` [dpdk-dev] [PATCH] app/testpmd: fix segment number check Viacheslav Ovsiienko
2020-12-11 16:00                           ` Andrew Boyer
2020-12-11 16:14                             ` Slava Ovsiienko
2020-12-16 12:12                               ` Ferruh Yigit
2020-12-16 12:33                                 ` Slava Ovsiienko
2020-12-16 12:36                           ` Ferruh Yigit
2021-04-23 16:09                           ` [dpdk-dev] [PATCH v2] " Ferruh Yigit
2021-04-26 11:23                             ` Li, Xiaoyun
2021-04-27 11:42                               ` Ferruh Yigit
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 4/6] app/testpmd: fix packet header in txonly mode Wei Hu (Xavier)
2020-09-29 15:40     ` Ferruh Yigit
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 5/6] app/testpmd: fix valid desc id check Wei Hu (Xavier)
2020-09-25 12:47   ` [dpdk-dev] [PATCH v4 6/6] app/testpmd: fix displaying Rx Tx queues information Wei Hu (Xavier)
2020-09-29 15:40   ` [dpdk-dev] [PATCH v4 0/6] minor fixes for testpmd Ferruh Yigit

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