Re: wm driver on SuperMicro ... quirks?

[Staffan Thomén <duck%shangtai.net@localhost>]

On 11.09 12:33, Havard Eidnes wrote:
> 1) One host with an i82576 (wm) + i82566 (igphy) is connected to
>     an old Juniper ex4200 switch.
>
>     At startup, it completes auto-negotiation at 1G FDX.  However,
>     after a while (while I'm not looking), the host and switch
>     apparently agree to settle on 100Mbit/s FDX instead.  This
>     does "wonders" when the nightly backup run commences, it
>     manages to saturate the capacity.
>
>     If I manually do "ifconfig wm0 down; ifconfig wm0 up", it once
>     again completes auto-negotiation at 1G FDX.  However, that is
>     not a permanent fix, as sure enough, it later on decides on
>     its own to settle on 100Mbit/s FDX instead.
Hi!

I am seeing this exact same thing happen with my i82576+i82566 on a
Supermicro 2026 system (X8DTU-6+), with intel CPUs.

It happens on wm0 which is connected to an ubiquiti edgeswitch 180,
but not on wm1 which is (identical and) connected directly to my isp's
router.

Additionally, the wm0 interface also occasionally loses it's ipv6 address.

I have had no device timeouts though.

Both interfaces are part of bridges, but only wm0 has an address (at 
all, but via dhcp).

The system runs NetBSD 9.3 and is a Xen host.

Staffan

ppb4 at pci0 dev 28 function 0: vendor 8086 product 3a40 (rev. 0x00)
ppb4: PCI Express capability version 1 <Root Port of PCI-E Root Complex> 
x4 @ 2.
5GT/s
pci5 at ppb4 bus 5
pci5: i/o space, memory space enabled
wm0 at pci5 dev 0 function 0, 64-bit DMA: 82576 1000BaseT Ethernet (rev. 
0x01)
wm0: interrupting at ioapic0 pin 16
wm0: PCI-Express bus
wm0: 16384 words (16 address bits) SPI EEPROM, version 1.53, Image 
Unique ID f0f60000
wm0: Ethernet address 00:25:90:52:42:24
wm0: Copper
wm0: 0x274040<SPI,PCIE,NEWQUEUE,ASF_FIRM,ARC_SUBSYS,WOL>
igphy0 at wm0 phy 1: i82566 10/100/1000 media interface, rev. 1
igphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
wm1 at pci5 dev 0 function 1, 64-bit DMA: 82576 1000BaseT Ethernet (rev. 
0x01)
wm1: interrupting at ioapic0 pin 17
wm1: PCI-Express bus
wm1: 16384 words (16 address bits) SPI EEPROM, version 1.53, Image 
Unique ID f0f60000
wm1: Ethernet address 00:25:90:52:42:25
wm1: Copper
wm1: 0x274040<SPI,PCIE,NEWQUEUE,ASF_FIRM,ARC_SUBSYS,WOL>
igphy1 at wm1 phy 1: i82566 10/100/1000 media interface, rev. 1
igphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto