patches for DPDK stable branches
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From: Thomas Monjalon <thomas@monjalon.net>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: Matan Azrad <matan@mellanox.com>,
	"Iremonger, Bernard" <bernard.iremonger@intel.com>,
	"Yao, Lei A" <lei.a.yao@intel.com>,
	"Yang, Zhiyong" <zhiyong.yang@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
	"Bie, Tiwei" <tiwei.bie@intel.com>,
	"stable@dpdk.org" <stable@dpdk.org>,
	Harry Van Haaren <harry.van.haaren@intel.com>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v2] app/testpmd: fix pmd_test_exit function for vdevs
Date: Mon, 21 May 2018 18:40:51 +0200	[thread overview]
Message-ID: <1553952.sZOlap8oeX@xps> (raw)
In-Reply-To: <5de1b87d-fcc5-c33c-f9a3-6e879b6c17fd@intel.com>

21/05/2018 18:37, Ferruh Yigit:
> On 5/19/2018 3:19 PM, Thomas Monjalon wrote:
> > 18/05/2018 18:29, Ferruh Yigit:
> >> On 5/18/2018 4:55 PM, Matan Azrad wrote:
> >>> Hi all
> >>>
> >>> While this patch also applied I don't understand it.
> >>> Is it mandatory for each PMD to free all its resources in dev_close()?
> >>> Or it should be done by the rte_device remove function?
> >>>
> >>> If the resource cleanup should be done by the remove function I think it
> >>> should be called for all the devices (pci, vdev, etc).
> >>>
> >>> Is there an exit function for EAL to clean rte_eal_init()? If no, looks like we need it...
> >>
> >> Hi Matan,
> >>
> >> I believe there is a gap in resource cleanup.
> >> dev_close() it not for resource cleanup, it should be in PMD remove() functions,
> >> and PMDs have it. The problem is remove path is not called in application exit.
> >>
> >> As far as I know there is no simple API to clean the resources, having it may
> >> help application to do the cleanup.
> >>
> >> I have seen the rte_eal_cleanup() API by Harry, that can be extended to cover
> >> PMD resource cleanup if there is enough motivation for it.
> > 
> > Yes, EAL resources should be removed by the function rte_eal_cleanup().
> > And ethdev ports must be removed by rte_eth_dev_close().
> 
> There is probe() and remove() functions.
> There is dev_close devops, called by rte_eth_dev_close(), but there is no open()
> or equivalent.
> 
> For example an ethdev allocated its private data during probe(), if
> rte_eth_dev_close() free it, how can a new ethdev can be allocated?

I don't understand the question.
You say closing a port and opening a new one.
So we allocate private data in the new probe.

  reply	other threads:[~2018-05-21 16:40 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-18  9:59 [dpdk-stable] " zhiyong.yang
2018-05-18  4:52 ` Yao, Lei A
2018-05-18 10:18   ` Iremonger, Bernard
2018-05-18 10:21     ` Ferruh Yigit
2018-05-18 10:48     ` Ferruh Yigit
2018-05-18 15:55       ` [dpdk-stable] [dpdk-dev] " Matan Azrad
2018-05-18 16:29         ` Ferruh Yigit
2018-05-19 14:19           ` Thomas Monjalon
2018-05-21 10:54             ` Thomas Monjalon
2018-05-21 16:32               ` Ferruh Yigit
2018-05-21 16:38                 ` Thomas Monjalon
2018-05-22 13:12                   ` Thomas Monjalon
2018-05-22 18:38                     ` Ferruh Yigit
2018-05-22 19:48                       ` Thomas Monjalon
2018-05-23  1:52                         ` Yang, Zhiyong
2018-05-23 11:37                           ` Yang, Zhiyong
2018-05-23 11:58                             ` Thomas Monjalon
2018-05-21 16:37             ` Ferruh Yigit
2018-05-21 16:40               ` Thomas Monjalon [this message]
2018-05-21 16:44                 ` Ferruh Yigit
2018-05-21 19:12                   ` Thomas Monjalon

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