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From: "lihuisong (C)" <lihuisong@huawei.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
	"Singh, Aman Deep" <aman.deep.singh@intel.com>,
	Thomas Monjalon <thomas@monjalon.net>
Cc: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
	"dev@dpdk.org" <dev@dpdk.org>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	David Marchand <david.marchand@redhat.com>
Subject: Re: [dpdk-dev] [RFC V2] ethdev: fix issue that dev close in PMD calls twice
Date: Fri, 8 Oct 2021 14:13:04 +0800
Message-ID: <25a6d05c-f041-064a-d567-546996b75126@huawei.com> (raw)
In-Reply-To: <c3d2ac6d-01d7-b1f2-c35a-f521188bbcd4@intel.com>


在 2021/9/30 19:01, Ferruh Yigit 写道:
> On 9/30/2021 11:54 AM, Huisong Li wrote:
>> 在 2021/9/28 15:19, Singh, Aman Deep 写道:
>>> On 9/22/2021 9:01 AM, Huisong Li wrote:
>>>> 在 2021/9/20 22:07, Ferruh Yigit 写道:
>>>>> On 8/25/2021 10:53 AM, Huisong Li wrote:
>>>>>> 在 2021/8/24 22:42, Ferruh Yigit 写道:
>>>>>>> On 8/19/2021 4:45 AM, Huisong Li wrote:
>>>>>>>> 在 2021/8/18 19:24, Ferruh Yigit 写道:
>>>>>>>>> On 8/13/2021 9:16 AM, Huisong Li wrote:
>>>>>>>>>> 在 2021/8/13 14:12, Thomas Monjalon 写道:
>>>>>>>>>>> 13/08/2021 04:11, Huisong Li:
>>>>>>>>>>>> Hi, all
>>>>>>>>>>>>
>>>>>>>>>>>> This patch can enhance the security of device uninstallation to
>>>>>>>>>>>> eliminate dependency on user usage methods.
>>>>>>>>>>>>
>>>>>>>>>>>> Can you check this patch?
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> 在 2021/8/3 10:30, Huisong Li 写道:
>>>>>>>>>>>>> Ethernet devices in DPDK can be released by rte_eth_dev_close() and
>>>>>>>>>>>>> rte_dev_remove(). These APIs both call xxx_dev_close() in PMD layer
>>>>>>>>>>>>> to uninstall hardware. However, the two APIs do not have explicit
>>>>>>>>>>>>> invocation restrictions. In other words, at the ethdev layer, it is
>>>>>>>>>>>>> possible to call rte_eth_dev_close() before calling rte_dev_remove()
>>>>>>>>>>>>> or rte_eal_hotplug_remove(). In such a bad scenario,
>>>>>>>>>>> It is not a bad scenario.
>>>>>>>>>>> If there is no more port for the device after calling close,
>>>>>>>>>>> the device should be removed automatically.
>>>>>>>>>>> Keep in mind "close" is for one port, "remove" is for the entire device
>>>>>>>>>>> which can have more than one port.
>>>>>>>>>> I know.
>>>>>>>>>>
>>>>>>>>>> dev_close() is for removing an eth device. And rte_dev_remove() can be
>>>>>>>>>> used
>>>>>>>>>>
>>>>>>>>>> for removing the rte device and all its eth devices belonging to the rte
>>>>>>>>>> device.
>>>>>>>>>>
>>>>>>>>>> In rte_dev_remove(), "remove" is executed in primary or one of secondary,
>>>>>>>>>>
>>>>>>>>>> all eth devices having same pci address will be closed and removed.
>>>>>>>>>>
>>>>>>>>>>>>> the primary
>>>>>>>>>>>>> process may be fine, but it may cause that xxx_dev_close() in the PMD
>>>>>>>>>>>>> layer will be called twice in the secondary process. So this patch
>>>>>>>>>>>>> fixes it.
>>>>>>>>>>> If a port is closed in primary, it should be the same in secondary.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>> +    /*
>>>>>>>>>>>>> +     * The eth_dev->data->name doesn't be cleared by the secondary
>>>>>>>>>>>>> process,
>>>>>>>>>>>>> +     * so above "eth_dev" isn't NULL after rte_eth_dev_close() called.
>>>>>>>>>>> This assumption is not clear. All should be closed together.
>>>>>>>>>> However, dev_close() does not have the feature similar to
>>>>>>>>>> rte_dev_remove().
>>>>>>>>>>
>>>>>>>>>> Namely, it is not guaranteed that all eth devices are closed together in
>>>>>>>>>> ethdev
>>>>>>>>>> layer. It depends on app or user.
>>>>>>>>>>
>>>>>>>>>> If the app does not close together, the operation of repeatedly
>>>>>>>>>> uninstalling an
>>>>>>>>>> eth device in the secondary process
>>>>>>>>>>
>>>>>>>>>> will be triggered when dev_close() is first called by one secondary
>>>>>>>>>> process, and
>>>>>>>>>> then rte_dev_remove() is called.
>>>>>>>>>>
>>>>>>>>>> So I think it should be avoided.
>>>>>>>>> First of all, I am not sure about calling 'rte_eth_dev_close()' or
>>>>>>>>> 'rte_dev_remove()' from the secondary process.
>>>>>>>>> There are explicit checks in various locations to prevent clearing
>>>>>>>>> resources
>>>>>>>>> completely from secondary process.
>>>>>>>> There's no denying that.
>>>>>>>>
>>>>>>>> Generally, hardware resources of eth device and shared data of the
>>>>>>>> primary and
>>>>>>>> secondary process
>>>>>>>>
>>>>>>>> are cleared by primary, which are controled by ethdev layer or PMD layer.
>>>>>>>>
>>>>>>>> But there may be some private data or resources of each process (primary or
>>>>>>>> secondary ), such as mp action
>>>>>>>>
>>>>>>>> registered by rte_mp_action_register() or others.  For these resources, the
>>>>>>>> secondary process still needs to clear.
>>>>>>>>
>>>>>>>> Namely, both primary and secondary processes need to prevent repeated
>>>>>>>> offloading
>>>>>>>> of resources.
>>>>>>>>
>>>>>>>>> Calling 'rte_eth_dev_close()' or 'rte_dev_remove()' by secondary is
>>>>>>>>> technically
>>>>>>>>> can be done but application needs to be extra cautious and should take
>>>>>>>>> extra
>>>>>>>>> measures and synchronization to make it work.
>>>>>>>>> Regular use-case is secondary processes do the packet processing and all
>>>>>>>>> control
>>>>>>>>> commands run by primary.
>>>>>>>> You are right. We have a consensus that 'rte_eth_dev_close()' or
>>>>>>>> 'rte_dev_remove()'
>>>>>>>>
>>>>>>>> can be called by primary and secondary processes.
>>>>>>>>
>>>>>>>> But DPDK framework cannot assume user behavior.😁
>>>>>>>>
>>>>>>>> We need to make it more secure and reliable for both primary and secondary
>>>>>>>> processes.
>>>>>>>>
>>>>>>>>> In primary, if you call 'rte_eth_dev_close()' it will clear all ethdev
>>>>>>>>> resources
>>>>>>>>> and further 'rte_dev_remove()' call will detect missing ethdev resources
>>>>>>>>> and
>>>>>>>>> won't try to clear them again.
>>>>>>>>>
>>>>>>>>> In secondary, if you call 'rte_eth_dev_close()', it WON'T clear all
>>>>>>>>> resources
>>>>>>>>> and further 'rte_dev_remove()' call (either from primary or secondary)
>>>>>>>>> will try
>>>>>>>>> to clean ethdev resources again. You are trying to prevent this retry in
>>>>>>>>> remove
>>>>>>>>> happening for secondary process.
>>>>>>>> Right. However, if secondary process in PMD layer has its own private
>>>>>>>> resources
>>>>>>>> to be
>>>>>>>>
>>>>>>>> cleared, it still need to do it by calling 'rte_eth_dev_close()' or
>>>>>>>> 'rte_dev_remove()'.
>>>>>>>>
>>>>>>>>> In secondary it won't free ethdev resources anyway if you let it continue,
>>>>>>>>> but I
>>>>>>>>> guess here you are trying to prevent the PMD dev_close() called again.
>>>>>>>>> Why? Is
>>>>>>>>> it just for optimization or does it cause unexpected behavior in the PMD?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Overall, to free resources you need to do the 'rte_eth_dev_close()' or
>>>>>>>>> 'rte_dev_remove()' in the primary anyway. So instead of this workaround, I
>>>>>>>>> would
>>>>>>>>> suggest making PMD dev_close() safe to be called multiple times (if this
>>>>>>>>> is the
>>>>>>>>> problem.)
>>>>>>>> In conclusion,  primary and secondary processes in PMD layer may have
>>>>>>>> their own
>>>>>>>>
>>>>>>>> private data and resources, which need to be processed and released.
>>>>>>>>
>>>>>>>> Currently,  these for PMD are either handled and cleaned up in
>>>>>>>> dev_close() or
>>>>>>>> remove().
>>>>>>>>
>>>>>>>> However, code streams in rte_dev_remove() cannot ensure that the
>>>>>>>> uninstallation
>>>>>>>>
>>>>>>>> from secondary process will not be repeated if rte_eth_dev_close() is first
>>>>>>>> called by
>>>>>>>>
>>>>>>>> secondary(primary is ok, plese review this patch).
>>>>>>>>
>>>>>>>> I think, this is the same for each PMD and is better suited to doing it in
>>>>>>>> ethdev layer.
>>>>>>>>
>>>>>>> This patch prevents to call dev_close() twice in the secondary process, is
>>>>>>> this
>>>>>>> fixing a theoretical problem or an actual problem?
>>>>>>>
>>>>>>> If it is an actual problem can you please provide details, callstack of the
>>>>>>> problematic case?
>>>>>> We analyzed the code when modifying the bug and found that the problem did
>>>>>> exist.
>>>>>>
>>>>>> The ethdev layer did not guarantee the security.
>>>>>>
>>>>> I was wondering if there is a crash for an unexpected path, for below case the
>>>>> primary process check in the 'hns3_dev_uninit()' should already prevent
>>>>> anything
>>>>> unexpected. So I assume this is a fix for a theoretical issue.
>>>> Yes. For primary process, hns3 can prevent multiple device uninstallation
>>>> through
>>>>
>>>> "adapter_state" controled by primary process.
>>>>
>>>> The problem of multiple device uninstallation has been prevented at
>>>> rte_eth_dev_pci_generic_remove()
>>>>
>>>> in the ethdev layer, as described in the patch.
>>>>
>>>> In primary process, rte_eth_dev_allocated() in
>>>> rte_eth_dev_pci_generic_remove() will return NULL
>>>>
>>>> when first calling dev_close(), and then calling rte_dev_remove(). So it is
>>>> ok. But the logic can not
>>>>
>>>> prevent the same case in secondary because secondary does not clear dev->data.
>>>>
>>>>> In secondary process, these init/uninit device is already not very safe. For
>>>>> example, as far as I can see in secondary if you hot remove a device device and
>>>>> hot plug a new one, new device will use wrong device data (since hot remove
>>>>> won't clear device data, new one will continue to use it).
>>>> No. If we hot remove a device in secondary, the secondary will request its
>>>> primary
>>>>
>>>> send "remove device" message to all secondaries. After all secondaries are
>>>> removed,
>>>>
>>>> the primary also removes the device and the device data will be cleared.
>>>>
>>>> This is the logic of rte_dev_remove().
>>>>
>>>>> So I am not sure about adding secondary process related checks in that area and
>>>>> causing a false sense of security, and polluting the logic with secondary
>>>>> specific checks.
>>>>> Also the check you add may hit by primary process and I am worried on an
>>>>> unexpected side affect it cause.
>>>>>
>>>>>
>>>>> As said above I am not sure about this new check, but even we continue with it,
>>>>> what about wrapping the check with secondary process check, at least to be sure
>>>>> there won't be any side affect for primary process.
>>>>>
>>>> If app hot remove device in primary/secondary, the original logic is still
>>>> used in this interface, because of
>>>>
>>>> bing RTE_ETH_DEV_ATTACHED state for eth_dev. If app first calls dev_close(),
>>>> eth device is
>>>>
>>>> RTE_ETH_DEV_UNUSED state in primary/secondary. In this issue case, this
>>>> interface is still return from the
>>>>
>>>> original place instead of the new check.
>>>>
>>>> So I don't think the new check will affect the primary process. Conversely,
>>>> it's safer for secondary processes.
>>>>
>>>> Please check it again, thanks.
>>> As this issue is specific to secondary process, can we have these change under
>>> a check like "if (rte_eal_process_type() != RTE_PROC_PRIMARY)"
>>>
>>> By this we can avoid any side effect of these changes for primary process and
>>> also it makes code readablity easier for designers who are not checking
>>> secondary process changes.
>> yes.
>>
>> @Ferruh, what do you think?
>>
> +1 to have it, it clarifies the intention of the check, plus prevents possible
> sice affect for primary as Aman mentioned.
ok. I will modify it in patch V1.
>
>>>>>> The general function of the two interfaces is as follows:
>>>>>>
>>>>>> rte_eth_dev_close() --> release eth device
>>>>>>
>>>>>> rte_dev_remove() -->   release eth device + remove and free
>>>>>> rte_pci_device(primary andsecondary).
>>>>>>
>>>>>> According to the OVS application scenario, first call dev_close() and then
>>>>>> call
>>>>>>
>>>>>> remove(), which is possible.
>>>>>>
>>>>>> We constructed this scenario using testpmd to start the secondary process(the
>>>>>> multi-process
>>>>>>
>>>>>> patch of testpmd is being uploaded.). It is proved that the ethdev layer
>>>>>> cannot
>>>>>> guarantee
>>>>>>
>>>>>> this security. The callstack is as follows:
>>>>>>
>>>>>> **************************************************************************************************************************************************
>>>>>>
>>>>>>
>>>>>>
>>>>>> gdb) set args -a 0000:7d:00.0 -l 2-3 --file-prefix=rte_lee --proc-type=auto --
>>>>>> -i --rxq 4 --txq 4 --num-procs=2 --proc-id=1
>>>>>> (gdb) b hns3_dev_uninit
>>>>>> Breakpoint 1 at 0xbca7d0: file ../drivers/net/hns3/hns3_ethdev.c, line 7806.
>>>>>> (gdb) b hns3_dev_close
>>>>>> Breakpoint 2 at 0xbc6d44: file ../drivers/net/hns3/hns3_ethdev.c, line 6189.
>>>>>> (gdb) r
>>>>>> Starting program:
>>>>>> /home/lihuisong/v500/gcov-test/dpdk/build/app/dpdk-testpmd -a
>>>>>> 0000:7d:00.0 -l 2-3 --file-prefix=rte_lee --proc-type=auto -- -i --rxq 4
>>>>>> --txq 4
>>>>>> --num-procs=2 --proc-id=1
>>>>>> Missing separate debuginfo for /root/lib/libnuma.so.1
>>>>>> Try: yum --enablerepo='*debug*' install
>>>>>> /usr/lib/debug/.build-id/ce/4eea0b0f2150f70a080bbd8835e43e78373096.debug
>>>>>> [Thread debugging using libthread_db enabled]
>>>>>> Using host libthread_db library "/lib64/libthread_db.so.1".
>>>>>> EAL: Detected 128 lcore(s)
>>>>>> EAL: Detected 4 NUMA nodes
>>>>>> EAL: Auto-detected process type: SECONDARY
>>>>>> EAL: Detected static linkage of DPDK
>>>>>> [New Thread 0xfffff7a0ad10 (LWP 17717)]
>>>>>> EAL: Multi-process socket /var/run/dpdk/rte_lee/mp_socket_17714_66aa8d3a60a9
>>>>>> [New Thread 0xfffff7209d10 (LWP 17718)]
>>>>>> EAL: Selected IOVA mode 'VA'
>>>>>> EAL: VFIO support initialized
>>>>>> [New Thread 0xfffff69f8d10 (LWP 17719)]
>>>>>> EAL: Using IOMMU type 1 (Type 1)
>>>>>> EAL: Probe PCI driver: net_hns3 (19e5:a222) device: 0000:7d:00.0 (socket 0)
>>>>>> [New Thread 0xfffff61f7d10 (LWP 17720)]
>>>>>> TELEMETRY: No legacy callbacks, legacy socket not created
>>>>>> Interactive-mode selected
>>>>>> 0000:7d:00.0 hns3_dev_mtu_set(): Failed to set mtu, port 0 must be stopped
>>>>>> before configuration
>>>>>> Failed to set MTU to 1500 for port 0
>>>>>> testpmd: create a new mbuf pool <mb_pool_0>: n=155456, size=2176, socket=0
>>>>>> testpmd: preferred mempool ops selected: ring_mp_mc
>>>>>>
>>>>>> Warning! port-topology=paired and odd forward ports number, the last port will
>>>>>> pair with itself.
>>>>>>
>>>>>> Configuring Port 0 (socket 0)
>>>>>> Port 0: 00:18:2D:00:00:9E
>>>>>> Checking link statuses...
>>>>>> Done
>>>>>> testpmd> port close 0
>>>>>> Closing ports...
>>>>>>
>>>>>> Breakpoint 2, hns3_dev_close (eth_dev=0x21cdb80 <rte_eth_devices>)
>>>>>>       at ../drivers/net/hns3/hns3_ethdev.c:6189
>>>>>> 6189        struct hns3_adapter *hns = eth_dev->data->dev_private;
>>>>>> Missing separate debuginfos, use: debuginfo-install glibc-2.17-260.el7.aarch64
>>>>>> libpcap-1.5.3-11.el7.aarch64 openssl-libs-1.0.2k-16.el7.aarch64
>>>>>> zlib-1.2.7-18.el7.aarch64
>>>>>> (gdb) bt
>>>>>> #0  hns3_dev_close (eth_dev=0x21cdb80 <rte_eth_devices>) at
>>>>>> ../drivers/net/hns3/hns3_ethdev.c:6189
>>>>>> #1  0x0000000000742eac in rte_eth_dev_close (port_id=0) at
>>>>>> ../lib/ethdev/rte_ethdev.c:1870
>>>>>> #2  0x0000000000542a8c in close_port (pid=0) at ../app/test-pmd/testpmd.c:2895
>>>>>> #3  0x00000000004df82c in cmd_operate_specific_port_parsed
>>>>>> (parsed_result=0xffffffffb0f0,
>>>>>>       cl=0x2475080, data=0x0) at ../app/test-pmd/cmdline.c:1272
>>>>>> #4  0x0000000000738ce4 in cmdline_parse (cl=0x2475080, buf=0x24750c8 "port
>>>>>> close
>>>>>> 0\n")
>>>>>>       at ../lib/cmdline/cmdline_parse.c:290
>>>>>> #5  0x0000000000736b7c in cmdline_valid_buffer (rdl=0x2475090, buf=0x24750c8
>>>>>> "port close 0\n",
>>>>>>       size=14) at ../lib/cmdline/cmdline.c:26
>>>>>> #6  0x000000000073c078 in rdline_char_in (rdl=0x2475090, c=10 '\n')
>>>>>>       at ../lib/cmdline/cmdline_rdline.c:421
>>>>>> #7  0x0000000000736fcc in cmdline_in (cl=0x2475080, buf=0xfffffffff25f
>>>>>> "\n\200\362\377\377\377\377",
>>>>>>       size=1) at ../lib/cmdline/cmdline.c:149
>>>>>> #8  0x0000000000737270 in cmdline_interact (cl=0x2475080) at
>>>>>> ../lib/cmdline/cmdline.c:223
>>>>>> #9  0x00000000004f0ccc in prompt () at ../app/test-pmd/cmdline.c:17882
>>>>>> #10 0x0000000000545528 in main (argc=8, argv=0xfffffffff470) at
>>>>>> ../app/test-pmd/testpmd.c:3998
>>>>>> (gdb) c
>>>>>> Continuing.
>>>>>> Port 0 is closed
>>>>>> Done
>>>>>> testpmd> device detach 0000:7d:00.0
>>>>>> Removing a device...
>>>>>> [Switching to Thread 0xfffff7a0ad10 (LWP 17717)]
>>>>>>
>>>>>> Breakpoint 1, hns3_dev_uninit (eth_dev=0x21cdb80 <rte_eth_devices>)
>>>>>>       at ../drivers/net/hns3/hns3_ethdev.c:7806
>>>>>> 7806        struct hns3_adapter *hns = eth_dev->data->dev_private;
>>>>>> (gdb) bt
>>>>>> #0  hns3_dev_uninit (eth_dev=0x21cdb80 <rte_eth_devices>) at
>>>>>> ../drivers/net/hns3/hns3_ethdev.c:7806
>>>>>> #1  0x0000000000bb8668 in rte_eth_dev_pci_generic_remove (pci_dev=0x247a600,
>>>>>>       dev_uninit=0xbca7c4 <hns3_dev_uninit>) at ../lib/ethdev/ethdev_pci.h:155
>>>>>> #2  0x0000000000bca89c in eth_hns3_pci_remove (pci_dev=0x247a600)
>>>>>>       at ../drivers/net/hns3/hns3_ethdev.c:7833
>>>>>> #3  0x00000000007e85f4 in rte_pci_detach_dev (dev=0x247a600) at
>>>>>> ../drivers/bus/pci/pci_common.c:287
>>>>>> #4  0x00000000007e8f14 in pci_unplug (dev=0x247a610) at
>>>>>> ../drivers/bus/pci/pci_common.c:570
>>>>>> #5  0x0000000000775678 in local_dev_remove (dev=0x247a610) at
>>>>>> ../lib/eal/common/eal_common_dev.c:319
>>>>>> #6  0x000000000078f114 in __handle_primary_request (param=0xfffff00008c0)
>>>>>>       at ../lib/eal/common/hotplug_mp.c:284
>>>>>> #7  0x000000000079ebf4 in eal_alarm_callback (arg=0x0) at
>>>>>> ../lib/eal/linux/eal_alarm.c:92
>>>>>> #8  0x00000000007a3f30 in eal_intr_process_interrupts (events=0xfffff7a0a3e0,
>>>>>> nfds=1)
>>>>>>       at ../lib/eal/linux/eal_interrupts.c:998
>>>>>> #9  0x00000000007a4224 in eal_intr_handle_interrupts (pfd=10, totalfds=2)
>>>>>>       at ../lib/eal/linux/eal_interrupts.c:1071
>>>>>> #10 0x00000000007a442c in eal_intr_thread_main (arg=0x0) at
>>>>>> ../lib/eal/linux/eal_interrupts.c:1142
>>>>>> #11 0x0000000000789388 in ctrl_thread_init (arg=0x246ef40)
>>>>>>       at ../lib/eal/common/eal_common_thread.c:202
>>>>>> #12 0x0000fffff7bf3c48 in start_thread () from /lib64/libpthread.so.0
>>>>>> #13 0x0000fffff7b45600 in thread_start () from /lib64/libc.so.6
>>>>>>
>>>>>> **************************************************************************************************************************************************
>>>>>>
>>>>>>
>>>>>>
>>>>>> Note: above log is from the secondary process.
>>>>>>
>>>>>>>>> And again, please re-consider calling 'rte_eth_dev_close()' or
>>>>>>>>> 'rte_dev_remove()' from the secondary process.
>>>>>>>>>
>>>>>>>>>>>>> +     * Namely, whether "eth_dev" is NULL cannot be used to determine
>>>>>>>>>>>>> whether
>>>>>>>>>>>>> +     * an ethdev port has been released.
>>>>>>>>>>>>> +     * For both primary process and secondary process,
>>>>>>>>>>>>> eth_dev->state is
>>>>>>>>>>>>> +     * RTE_ETH_DEV_UNUSED, which means the ethdev port has been
>>>>>>>>>>>>> released.
>>>>>>>>>>>>> +     */
>>>>>>>>>>>>> +    if (eth_dev->state == RTE_ETH_DEV_UNUSED) {
>>>>>>>>>>>>> +        RTE_ETHDEV_LOG(INFO, "The ethdev port has been released.");
>>>>>>>>>>>>> +        return 0;
>>>>>>>>>>>>> +    }
>>>>>>>>>>> .
>>>>>>>>> .
>>>>>>> .
>>>>> .
>>> .
> .
>

  reply	other threads:[~2021-10-08  6:13 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) [this message]
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
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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