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Date:      Sat, 29 Jan 2022 02:31:10 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 208205] re0 watchdog timeout
Message-ID:  <bug-208205-7501-Q9wbOQsAAm@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-208205-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-208205-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D208205

amvandemore@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |amvandemore@gmail.com

--- Comment #38 from amvandemore@gmail.com ---
Still present on 13.0-STABLE #0 stable/13-n248872-2c7441c86ef:

re1@pci0:5:0:0: class=3D0x020000 rev=3D0x15 hdr=3D0x00 vendor=3D0x10ec devi=
ce=3D0x8168
subvendor=3D0x17aa subdevice=3D0x5094
    vendor     =3D 'Realtek Semiconductor Co., Ltd.'
    device     =3D 'RTL8111/8168/8411 PCI Express Gigabit Ethernet Controll=
er'
    class      =3D network
    subclass   =3D ethernet
    bar   [10] =3D type I/O Port, range 32, base 0x2000, size 256, enabled
    bar   [18] =3D type Memory, range 64, base 0xfd504000, size 4096, enabl=
ed
    bar   [20] =3D type Memory, range 64, base 0xfd500000, size 16384, enab=
led
    cap 01[40] =3D powerspec 3  supports D0 D1 D2 D3  current D0
    cap 05[50] =3D MSI supports 1 message, 64 bit
    cap 10[70] =3D PCI-Express 2 endpoint MSI 1 max data 128(128) RO
                 max read 4096
                 link x1(x1) speed 2.5(2.5) ASPM disabled(L0s/L1) ClockPM
disabled
    cap 11[b0] =3D MSI-X supports 4 messages, enabled
                 Table in map 0x20[0x0], PBA in map 0x20[0x800]
    ecap 0001[100] =3D AER 2 0 fatal 0 non-fatal 1 corrected
    ecap 0002[140] =3D VC 1 max VC0
    ecap 0003[160] =3D Serial 1 01000000684ce000
    ecap 0018[170] =3D LTR 1
    ecap 001e[178] =3D L1 PM Substates 1

I was able to reset it into a good working state(when interface was doing a
watchdog up/down about every 2 minutes) via
ifconfig re1 down ; sleep 10 ; ifconfig re1 up

Not sure if related but for some period of time prior to watchdog times the=
 NIC
performance degrades to roughly half.  This could be some disk or other
bottleneck I haven't identified yet.

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