Message-ID: <26a974a4-d203-cfb0-86e5-d5a4f170c3b0@aquantia.com>
Date:   Mon, 25 Feb 2019 14:03:29 +0000
From:   Igor Russkikh <Igor.Russkikh@...antia.com>
To:     Stephen Hemminger <stephen@...workplumber.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     Dmitry Bogdanov <Dmitry.Bogdanov@...antia.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Fw: [Bug 202651] New: Thunderbolt: Regression in atlantic.ko
 between 4.20 and 5.00-rc4 for Aquantia NIC 1d6a:87b1

Hi Stephen, 

Thanks for heads up.

We are now looking into this, but the strange thing is atlantic driver had no valuable changes
between 4.20 and 5.0rc.

Also, from what user writes up in the ticket, the issue seems to be related with pci/thunderbolt
subsystem, not with the device driver itself: after couple of hot plugs/unplugs system hangs.

Will try to reproduce that ASAP on our hardware.

Regards,
  Igor


On 23.02.2019 19:50, Stephen Hemminger wrote:
> 
> 
> Begin forwarded message:
> 
> Date: Sat, 23 Feb 2019 09:01:29 +0000
> From: bugzilla-daemon@...zilla.kernel.org
> To: stephen@...workplumber.org
> Subject: [Bug 202651] New: Regression in atlantic.ko between 4.20 and 5.00-rc4 for Aquantia NIC 1d6a:87b1
> 
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=202651
> 
>             Bug ID: 202651
>            Summary: Regression in atlantic.ko between 4.20 and 5.00-rc4
>                     for Aquantia NIC 1d6a:87b1
>            Product: Networking
>            Version: 2.5
>     Kernel Version: 5.00-rc4
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: high
>           Priority: P1
>          Component: IPV4
>           Assignee: stephen@...workplumber.org
>           Reporter: nicholas.johnson@...look.com.au
>         Regression: No
> 
> Hardware Details:
> ==============================================================================
> 
> VEN:DEV = 1d6a:87b1 "Aquantia Corp. AQC107 NBase-T/IEEE 802.3bz Ethernet
> Controller [AQtion]" Specifically, this is the newer AQC107S with "S"
> meaning "Secure" and the company could never elaborate on how it is more
> secure than the plain AQC107 (different VEN:DEV). This chip is inside
> the Promise SANLink3 N1 Thunderbolt 3 10GbE adapter.
> 
> 
> Severity:
> ==============================================================================
> 
> Marked high severity because it directly impacts user experience (cannot
> get the network to come up on the adapter).
> 
> 
> Back Story and Problem:
> ==============================================================================
> 
> In 5.00-rc4, on my Ubuntu desktop I have had extreme problems getting
> the connection up (borderline impossible). If I did manage (after
> messing with systemd *a lot*) then I got a dodgy connection with a lot
> of DNS resolution problems. At first I blamed it on my desktop which had
> a habit of corrupting the SSD partition tables on a regular basis, and
> hence I assumed that systemd was corrupted or something.
> 
> Recently, I tried on my laptop with Arch Linux and 5.00-rc4 and it had
> the exact same problem. It does not matter if you manually assign the 
> IPv4 address, or use DHCPv4.
> 
> Just now, on my laptop, I booted into 4.20.3-arch1-1-ARCH kernel from
> Arch Linux and it worked straight away.
> 
> 
> Expected behaviour:
> ==============================================================================
> 
> NetworkManager (or any tool) should bring the link up successfully.
> 
> 
> Reproduction:
> ==============================================================================
> 
> Should be reproducible with a 5.00-rc4 kernel and the 1d6a:87b1 NIC. I
> have no way of testing if other Aquantia devices are affected - I do not
> own any others. I am using Ubuntu and Arch (both the very latest) and I
> just cannot get NetworkManager to bring up the connection with 5.00-rc4
> (happens effortlessly with 4.20 kernel). If you want NetworkManager to
> manage the adapter, you may need to use the
> 10-globally-managed-devices.conf fix, depending on the version.
> 
> 
> Technical Notes:
> ==============================================================================
> 
> It is hard to tell, but my gut tells me that it is IPv4-related. That
> would explain why some sites could work. I have a native IPv6 service
> from my ISP. The "ifconfig" command shows IPv6 addresses assigned, but
> it is very difficult to get a DHCPv4-assigned address on the adapter.
> 
> A couple of times I did manage to get the adapter up in 5.00-rc4 with a
> lot of messing around, and the resulting internet connection was
> unreliable and unstable. DNS resolution seemed to be a big part of the
> problem.
> 
> All BARs are assigned correctly. Other than that, dmesg does not give
> anything interesting that I can tell, so if you want some debug logs
> from somewhere then please tell me what you want and how I should do it.
> 
> There are a fair few lines of diff between 4.20 and 5.00-rc4 so there is
> likely an oopsie in there.
> 
> 
> Always Remembering My Manners:
> ==============================================================================
> 
> Thank you for reading my bug report!
> 
> 
> Why Are Web Developers So Annoying?
> ==============================================================================
> 
> The preview removes all my newlines and nice formatting which I did so have fun
> trying to read this big blob of unformatted text.
> 

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