From: Ilya Maximets <i.maximets@samsung.com>
To: "Burakov, Anatoly" <anatoly.burakov@intel.com>,
dev@dpdk.org, Qi Zhang <qi.z.zhang@intel.com>
Cc: Wenzhuo Lu <wenzhuo.lu@intel.com>,
Konstantin Ananyev <konstantin.ananyev@intel.com>,
Laurent Hardy <laurent.hardy@6wind.com>,
Ferruh Yigit <ferruh.yigit@intel.com>,
stable@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v2] net/ixgbe: fix busy polling while fiber link update
Date: Thu, 8 Nov 2018 13:27:32 +0300 [thread overview]
Message-ID: <a7690a67-f3ba-3e6a-5827-082f2d15178d@samsung.com> (raw)
In-Reply-To: <bb7b776b-61f5-1291-70a9-c4730bf44aa1@intel.com>
On 07.11.2018 18:52, Burakov, Anatoly wrote:
> On 01-Nov-18 4:04 PM, Ilya Maximets wrote:
>> If the multispeed fiber link is in DOWN state, ixgbe_setup_link
>> could take around a second of busy polling. This is highly
>> inconvenient for the case where single thread periodically
>> checks the link statuses. For example, OVS main thread
>> periodically updates the link statuses and hangs for a really
>> long time busy waiting on ixgbe_setup_link() for a DOWN fiber
>> ports. For case with 3 down ports it hangs for a 3 seconds and
>> unable to do anything including packet processing.
>> Fix that by shifting that workaround to a separate thread by
>> alarm handler that will try to set up link if it is DOWN.
>>
>> Fixes: c12d22f65b13 ("net/ixgbe: ensure link status is updated")
>> CC: stable@dpdk.org
>>
>> Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
>> ---
>
> On my setup, this commit breaks ixgbe init in pktgen 3.5.7:
>
> ixgbe_dev_start(): failure in ixgbe_dev_start(): -15
> !PANIC!: rte_eth_dev_start: port=0, Input/output error
> PANIC in pktgen_config_ports():
> rte_eth_dev_start: port=0, Input/output error6: [build/DPDK/pktgen(_start+0x2a) [0x560880ec838a]]
> 5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7fabc654cb97]]
> 4: [build/DPDK/pktgen(main+0xe77) [0x560880ec0357]]
> 3: [build/DPDK/pktgen(pktgen_config_ports+0x1cf0) [0x560880ef53e0]]
> 2: [build/DPDK/pktgen(__rte_panic+0xc5) [0x560880eb11b4]]
> 1: [build/DPDK/pktgen(rte_dump_stack+0x2e) [0x560880fde69e]]
> Aborted
>
Hi Anatoly,
Thanks for the report.
Could you, please, try the following patch I prepared:
http://patches.dpdk.org/patch/47939/
?
Best regards, Ilya Maximets.
prev parent reply other threads:[~2018-11-08 10:27 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20180831123824eucas1p1cd2981c716c4764703e24c3eeb4d33c7@eucas1p1.samsung.com>
2018-08-31 12:39 ` [dpdk-dev] [PATCH] " Ilya Maximets
2018-09-04 6:08 ` Zhang, Qi Z
2018-09-10 15:08 ` Ilya Maximets
2018-09-12 6:49 ` Zhang, Qi Z
2018-09-12 8:05 ` Ilya Maximets
2018-09-12 8:28 ` Zhang, Qi Z
2018-09-21 14:25 ` Zhang, Qi Z
2018-10-03 7:43 ` Ilya Maximets
2018-10-09 10:22 ` Zhao1, Wei
2018-10-11 9:56 ` Zhao1, Wei
2018-10-11 10:26 ` Ilya Maximets
2018-10-11 12:21 ` Laurent Hardy
2018-10-12 7:36 ` Zhao1, Wei
2018-10-15 10:43 ` Laurent Hardy
2018-10-16 8:29 ` Zhao1, Wei
2018-10-12 9:19 ` Zhao1, Wei
2018-10-12 10:14 ` Ilya Maximets
2018-10-15 3:03 ` Zhao1, Wei
2018-10-15 8:40 ` Ilya Maximets
2018-10-16 8:59 ` Zhao1, Wei
2018-10-30 10:20 ` Ilya Maximets
2018-11-01 15:45 ` Zhang, Qi Z
2018-11-01 16:05 ` Ilya Maximets
[not found] ` <CGME20181101160505eucas1p1fcf268f3febaa80dcbb3e573b2fc2c68@eucas1p1.samsung.com>
2018-11-01 16:04 ` [dpdk-dev] [PATCH v2] " Ilya Maximets
2018-11-02 13:49 ` Zhang, Qi Z
2018-11-07 15:52 ` Burakov, Anatoly
2018-11-08 10:27 ` Ilya Maximets [this message]
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