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Date:      Sat, 16 Dec 2017 05:59:47 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-net@FreeBSD.org
Subject:   [Bug 208205] re0 watchdog timeout
Message-ID:  <bug-208205-2472-jvBDWiGD75@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-208205-2472@https.bugs.freebsd.org/bugzilla/>
References:  <bug-208205-2472@https.bugs.freebsd.org/bugzilla/>

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

Dirk Meyer <dinoex@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dinoex@FreeBSD.org

--- Comment #17 from Dirk Meyer <dinoex@FreeBSD.org> ---
Hosted environment:

with FreeBSD 11.1-RELEASE.

Dual-Stack:
re0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=3D82088<VLAN_MTU,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
        nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex,master>)
        status: active

under load > 64 Mbit full dumplex I see the problem:
 kernel: re0: watchdog timeout
 kernel: re0: link state changed to DOWN
 kernel: re0: link state changed to UP

after a few times the card goes offline until reboot.

hw swap did not help.

hardware1:
re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F/G PCIe Gigabit Ethernet> port
0xe000-0xe0ff mem 0xf0004000-0xf0004fff,0xf0000000-0xf0003fff irq 17 at dev=
ice
0.0 on pci2
re0: MSI count : 1
re0: MSI-X count : 4
re0: attempting to allocate 1 MSI-X vectors (4 supported)
re0: using IRQ 265 for MSI-X
re0: Using 1 MSI-X message
re0: turning off MSI enable bit.
re0: Chip rev. 0x2c800000
re0: MAC rev. 0x00100000
miibus0: <MII bus> on re0
re0: Using defaults for TSO: 65518/35/2048
re0: bpf attached

hardware2:
re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F/G PCIe Gigabit Ethernet> port
0xe000-0xe0ff mem 0xf7c00000-0xf7c00fff,0xf0000000-0xf0003fff irq 16 at dev=
ice
0.0 on pci1
re0: MSI count : 1
re0: MSI-X count : 4
re0: attempting to allocate 1 MSI-X vectors (4 supported)
re0: using IRQ 266 for MSI-X
re0: Using 1 MSI-X message
re0: Chip rev. 0x4c000000
re0: MAC rev. 0x00000000
miibus0: <MII bus> on re0
re0: Using defaults for TSO: 65518/35/2048
re0: bpf attached
re0: Ethernet address: 44:8a:5b:d4:49:6d
re0: netmap queues/slots: TX 1/256, RX 1/256
random: harvesting attach, 8 bytes (4 bits) from re0

--=20
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