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From: Matan Azrad <matan@mellanox.com>
To: "Benoit Ganne (bganne)" <bganne@cisco.com>,
	"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] net/mlx5: fix link state update
Date: Mon, 30 Mar 2020 16:13:42 +0000
Message-ID: <AM0PR0502MB401907ADE7CEA27DC642DF35D2CB0@AM0PR0502MB4019.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <CH2PR11MB4327E60AE97A5EBD05AD5475C1CB0@CH2PR11MB4327.namprd11.prod.outlook.com>


Hi

From: Benoit Ganne (bganne)
> > Why link speed is undefined?
> > Old kernel?
> > Kernel mlx5 driver issue?
> > Do you know?
> 
> Seems to be a bug in kernel mlx5 driver:
> https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmails.
> dpdk.org%2Farchives%2Fusers%2F2020-
> March%2F004758.html&amp;data=02%7C01%7Cmatan%40mellanox.com%7C
> 69ce3bfd96484267869908d7d4b1ca89%7Ca652971c7d2e4d9ba6a4d149256f46
> 1b%7C0%7C0%7C637211732388079395&amp;sdata=%2BnfjST6fM4zoIYwJz7L
> Z2zL3rGmmOFXbpW0fK7Weps4%3D&amp;reserved=0
> I still think this test is too strict, and from what I can see mlx4 PMD do not
> implement it (even if it uses 2 syscalls too).
Yes, Doesn't mean this is not a bug in mlx4😊


Thanks Ben.

So we have 2 orthogonal efforts here:

1. To check with our driver team what is the issue to report a VF link speed : For me 😊
2. To change documentation of ethdev API to say that only link status is mandatory report. (all others "nice to have" or "best effort"):
	This is for you - I suggest to send prior patch to ethdev for this and let the community to decide.

Are you agree?


> ben

  reply	other threads:[~2020-03-30 16:13 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-27 17:24 Benoît Ganne
2020-03-29  7:00 ` Matan Azrad
2020-03-30  9:55   ` Benoit Ganne (bganne)
2020-03-30 10:12     ` Matan Azrad
2020-03-30 12:03       ` Benoit Ganne (bganne)
2020-03-30 13:44         ` Matan Azrad
2020-03-30 13:53           ` Benoit Ganne (bganne)
2020-03-30 16:13             ` Matan Azrad [this message]
2020-04-01 10:17               ` Benoit Ganne (bganne)
2020-04-01 12:46                 ` Matan Azrad
2020-04-07 12:54               ` Thomas Monjalon
2020-04-07 13:41                 ` Benoit Ganne (bganne)
2020-11-19  8:30                   ` Matan Azrad
2020-11-19 14:20 ` [dpdk-dev] [PATCH v2] " Raslan Darawsheh
2020-11-19 16:27   ` Raslan Darawsheh
2020-11-19 17:48   ` Ferruh Yigit
2020-11-19 18:42     ` Thomas Monjalon
2020-11-20 10:51       ` Ferruh Yigit
2020-11-20 13:50         ` Thomas Monjalon
2020-11-20 14:21           ` Ferruh Yigit
2020-11-22 10:03             ` Raslan Darawsheh
2020-11-22 10:04   ` [dpdk-dev] [PATCH v3] net/mlx5: allow unknown link speed Raslan Darawsheh
2020-11-22 12:58     ` Raslan Darawsheh

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