From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Huisong Li <lihuisong@huawei.com>, <dev@dpdk.org>
Cc: <thomas@monjalon.net>, <aman.deep.singh@intel.com>,
<andrew.rybchenko@oktetlabs.ru>, <anatoly.burakov@intel.com>
Subject: Re: [dpdk-dev] [PATCH V3] ethdev: fix eth device released repeatedly
Date: Tue, 19 Oct 2021 14:09:14 +0100 [thread overview]
Message-ID: <50757f4f-2d73-9552-79ce-470cfb7da322@intel.com> (raw)
In-Reply-To: <20211015034447.26368-1-lihuisong@huawei.com>
On 10/15/2021 4:44 AM, Huisong Li wrote:
> In secondary process, rte_eth_dev_close() doesn't clear eth_dev->data.
> If calling rte_dev_remove() after rte_eth_dev_close(),
> in rte_eth_dev_pci_generic_remove() function, the released eth device still
> can be found by its name in shared memory. As a result, the eth device will
> be released repeatedly. The state of the eth device is modified to
> RTE_ETH_DEV_UNUSED after rte_eth_dev_close(). So this state can be used to
> avoid this problem.
>
Hi Huisong,
Can you please add Fixes line, and stable tag if the change is requested
for backport?
> Signed-off-by: Huisong Li <lihuisong@huawei.com>
> ---
> v2 -> v3:
> * fix the commit log description and the comment inside the code.
> v1 -> v2:
> * fix the commit log description.
> RFC -> v1:
> * fix commit log and add a judgment for secondary process.
> ---
> lib/ethdev/ethdev_pci.h | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/lib/ethdev/ethdev_pci.h b/lib/ethdev/ethdev_pci.h
> index 8edca82ce8..fcabae02fa 100644
> --- a/lib/ethdev/ethdev_pci.h
> +++ b/lib/ethdev/ethdev_pci.h
> @@ -151,6 +151,16 @@ rte_eth_dev_pci_generic_remove(struct rte_pci_device *pci_dev,
> if (!eth_dev)
> return 0;
>
> + /*
> + * In secondary process, a released eth device can be found by its name
> + * in shared memory.
> + * If the state of the eth device is RTE_ETH_DEV_UNUSED, it means the
> + * eth device has been released.
> + */
> + if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
> + eth_dev->state == RTE_ETH_DEV_UNUSED)
> + return 0;
> +
> if (dev_uninit) {
> ret = dev_uninit(eth_dev);
> if (ret)
>
next prev parent reply other threads:[~2021-10-19 13:35 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-02 12:46 [dpdk-dev] [RFC V1] ethdev: fix the issue that dev uninit may be called twice Huisong Li
2021-08-03 2:30 ` [dpdk-dev] [RFC V2] ethdev: fix issue that dev close in PMD calls twice Huisong Li
2021-08-13 2:11 ` Huisong Li
2021-08-13 6:12 ` Thomas Monjalon
2021-08-13 8:16 ` Huisong Li
2021-08-18 11:24 ` Ferruh Yigit
2021-08-19 3:45 ` Huisong Li
2021-08-24 14:42 ` Ferruh Yigit
2021-08-25 9:53 ` Huisong Li
2021-09-04 1:23 ` Huisong Li
2021-09-18 3:31 ` Huisong Li
2021-09-20 14:07 ` Ferruh Yigit
2021-09-22 3:31 ` Huisong Li
2021-09-28 7:19 ` Singh, Aman Deep
2021-09-30 10:54 ` Huisong Li
2021-09-30 11:01 ` Ferruh Yigit
2021-10-08 6:13 ` lihuisong (C)
2021-08-18 9:47 ` [dpdk-dev] [RFC V1] ethdev: fix the issue that dev uninit may be called twice Singh, Aman Deep
2021-08-24 2:10 ` Huisong Li
2021-10-08 8:21 ` [dpdk-dev] [PATCH] ethdev: fix eth device released repeatedly Huisong Li
2021-10-08 10:23 ` Thomas Monjalon
2021-10-09 1:29 ` lihuisong (C)
2021-10-12 11:39 ` [dpdk-dev] [PATCH V2] " Huisong Li
2021-10-12 15:33 ` Thomas Monjalon
2021-10-14 3:50 ` lihuisong (C)
2021-10-14 12:32 ` lihuisong (C)
2021-10-14 12:50 ` Thomas Monjalon
2021-10-15 3:03 ` lihuisong (C)
2021-10-15 3:44 ` [dpdk-dev] [PATCH V3] " Huisong Li
2021-10-19 13:09 ` Ferruh Yigit [this message]
2021-10-21 2:31 ` lihuisong (C)
2021-10-21 2:24 ` [dpdk-dev] [PATCH V4] " Huisong Li
2021-10-21 21:19 ` Ferruh Yigit
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