From: Shahaf Shuler <shahafs@mellanox.com>
To: "Patil, Harish" <Harish.Patil@cavium.com>,
"jingjing.wu@intel.com" <jingjing.wu@intel.com>,
"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3 02/10] app/testpmd: convert to new Ethdev Rx offloads API
Date: Sat, 20 Jan 2018 19:29:27 +0000 [thread overview]
Message-ID: <VI1PR05MB3149AEBAA18E6C385AD3D8E0C3EE0@VI1PR05MB3149.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <D68782E0.1A31D4%Harish.Patil@cavium.com>
Hi Harish,
Friday, January 19, 2018 9:30 PM, Patil, Harish:
> >
>
> Hi Shahaf,
> This testpmd change is causing some issues for qede PMD.
> In this patch, rte_eth_dev_configure() and RX/TX queue setup functions are
> called for the second time after applying TX offloads but without calling
> rte_eth_dev_close() before.
This issue is not related to the patch, rather to how DPDK and ethdev layer is defined.
In DPDK, after device probe the device is considered usable from ethdev. Then from ethdev the device can be configured (both port and queues) as long as it is not started yet.
The move between device start, stop, port config and queue config can happen multiple times without the need to move through device close.
In fact, the only way to make the device usable again after close is by another probe.
> Also there is no way in the driver to detect that this is a port
> reconfiguration condition in which case it needs to do certain resources
> deallocation/cleanup based on prior configuration.
Am not sure I understand.
You mean it is impossible from your side to detect port configuration in your PMD? Other PMDs do that.
> Ideally, we don’t want to maintain port states in driver internally. So is
> there any suggestions here?
Generally, I think this is a big issue in qede PMD. It is not following the rules of ethdev.
I guess that with this misfunctionality you will have bugs also with real applications.
As a temporary walk around you can configure the Tx offload you want through --tx-offloads command line parameter and avoid enablement using the CLI.
This way the port and queues will be reconfigured only once.
>
> Thanks,
> Harish
>
>
>
>
> >
next prev parent reply other threads:[~2018-01-20 19:29 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-23 12:07 [dpdk-dev] [PATCH 0/5] convert testpmd to new ethdev " Shahaf Shuler
2017-11-23 12:08 ` [dpdk-dev] [PATCH 1/5] app/testpmd: convert to new Ethdev " Shahaf Shuler
2017-12-04 22:31 ` Ferruh Yigit
2017-12-05 6:39 ` Shahaf Shuler
2017-12-06 22:57 ` Ferruh Yigit
2017-12-07 7:55 ` Shahaf Shuler
2017-11-23 12:08 ` [dpdk-dev] [PATCH 2/5] app/testpmd: remove txqflags Shahaf Shuler
2017-12-04 22:31 ` Ferruh Yigit
2017-12-05 6:48 ` Shahaf Shuler
2017-12-06 23:04 ` Ferruh Yigit
2017-12-07 7:56 ` Shahaf Shuler
2017-12-12 12:45 ` Maciej Czekaj
2017-12-13 7:25 ` Shahaf Shuler
2017-11-23 12:08 ` [dpdk-dev] [PATCH 3/5] app/testpmd: add command line option for multiseg Shahaf Shuler
2017-11-23 12:08 ` [dpdk-dev] [PATCH 4/5] app/testpmd: add command line option for mbuf fast free Shahaf Shuler
2017-11-23 12:08 ` [dpdk-dev] [PATCH 5/5] app/testpmd: enforce offloads caps Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 00/10] convert testpmd to new ethdev offloads API Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 01/10] app/testpmd: fix port configuration print Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 02/10] app/testpmd: convert to new Ethdev Rx offloads API Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 03/10] app/testpmd: support check of single port stop Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 04/10] app/testpmd: convert to new Ethdev Tx offloads API Shahaf Shuler
2018-01-05 18:11 ` Maciej Czekaj
2018-01-07 15:24 ` Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 05/10] app/testpmd: fix flowgen forwarding ol flags Shahaf Shuler
2018-01-09 5:32 ` Lu, Wenzhuo
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 06/10] app/testpmd: cleanup internal Tx offloads flags field Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 07/10] app/testpmd: add command line option for Tx offloads Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 08/10] app/testpmd: remove txqflags Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 09/10] app/testpmd: enforce offloads caps Shahaf Shuler
2017-12-12 12:52 ` [dpdk-dev] [PATCH v2 10/10] app/testpmd: fix on the flight VLAN configuration Shahaf Shuler
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 00/10] convert testpmd to new ethdev offloads API Shahaf Shuler
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 01/10] app/testpmd: fix port configuration print Shahaf Shuler
2018-01-05 3:33 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 02/10] app/testpmd: convert to new Ethdev Rx offloads API Shahaf Shuler
2018-01-09 3:05 ` Lu, Wenzhuo
2018-01-19 19:30 ` Patil, Harish
2018-01-20 19:29 ` Shahaf Shuler [this message]
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 03/10] app/testpmd: support check of single port stop Shahaf Shuler
2018-01-09 3:20 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 04/10] app/testpmd: convert to new Ethdev Tx offloads API Shahaf Shuler
2018-01-09 5:27 ` Lu, Wenzhuo
2018-01-09 6:47 ` Shahaf Shuler
2018-01-09 7:13 ` Lu, Wenzhuo
2018-01-09 10:02 ` Shahaf Shuler
2018-01-09 11:37 ` Lu, Wenzhuo
2018-01-09 12:14 ` Ananyev, Konstantin
2018-01-10 0:37 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 05/10] app/testpmd: fix flowgen forwarding ol flags Shahaf Shuler
2018-01-09 5:35 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 06/10] app/testpmd: cleanup internal Tx offloads flags field Shahaf Shuler
2018-01-09 6:30 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 07/10] app/testpmd: add command line option for Tx offloads Shahaf Shuler
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 08/10] app/testpmd: remove txqflags Shahaf Shuler
2018-01-09 7:17 ` Lu, Wenzhuo
2018-01-09 10:07 ` Shahaf Shuler
2018-01-09 11:51 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 09/10] app/testpmd: enforce offloads caps Shahaf Shuler
2018-01-09 7:48 ` Lu, Wenzhuo
2017-12-26 9:44 ` [dpdk-dev] [PATCH v3 10/10] app/testpmd: fix on the flight VLAN configuration Shahaf Shuler
2018-01-09 8:05 ` Lu, Wenzhuo
2018-01-09 10:03 ` Shahaf Shuler
2018-01-09 11:44 ` Lu, Wenzhuo
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 00/11] convert testpmd to new ethdev offloads API Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 01/11] app/testpmd: fix port configuration print Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 02/11] app/testpmd: convert to new Ethdev Rx offloads API Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 03/11] app/testpmd: support check of single port stop Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 04/11] app/testpmd: convert to new Ethdev Tx offloads API Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 05/11] app/testpmd: fix flowgen forwarding ol flags Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 06/11] app/testpmd: cleanup internal Tx offloads flags field Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 07/11] app/testpmd: add command line option for Tx offloads Shahaf Shuler
2018-01-15 3:06 ` Lu, Wenzhuo
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 08/11] app/testpmd: remove txqflags Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 09/11] app/testpmd: enforce offloads caps Shahaf Shuler
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 10/11] app/testpmd: adjust on the flight VLAN configuration Shahaf Shuler
2018-01-15 3:30 ` Lu, Wenzhuo
2018-01-10 9:09 ` [dpdk-dev] [PATCH v4 11/11] app/testpmd: enable fast free Tx offload by default Shahaf Shuler
2018-01-15 3:33 ` Lu, Wenzhuo
2018-01-15 10:00 ` [dpdk-dev] [PATCH v4 00/11] convert testpmd to new ethdev offloads API Thomas Monjalon
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