Re: r312348: igb broken: reporting wrong linkspeed!

[Ngie Cooper]

> On Jan 17, 2017, at 11:54, Hartmann, O.  wrote:
> 
> 12-CURRENT (FreeBSD 12.0-CURRENT #74 r312348: Tue Jan 17 19:54:58 CET
> 2017 am64) reports the wrong linkspeed on a dualport Intel i350 NIC:
> 
> igb0: flags=8843 metric 0 mtu
> 1500
> options=653dbb
> ether xx:xx:xx:xx:xx:xx inet 192.168.0.111 netmask 0xff00 broadcast
> 192.168.0.255 nd6 options=29
>media: Ethernet autoselect (100baseTX )
>status: active
> 
> The swith the NIC is connected to reports 1 GBit. I checked with two
> switches, FreeBSD reports bullshit on that subject.
> 
> I also realised severe problems of this Intel i350 dual NIC cards with
> FreeBSD (we use this NIC type as a standard and so we have plenty, all
> with the same issue). When the NIC negotiates its linkspeed, it very
> often fall back to 100 MBit. This behaviour is not predictable, but it
> occurs with a SoHo smart managed Netgear GS110TBv2 and some of our
> Cisco Catalyst switches at work (some 35XX and 29XX, I do not know the
> exact type).

Hi,
One of the workarounds for igb wasn't ported to the new driver--I remember 
an issue like this being solved sometime in the 2015-2016 timeframe (I'm 
leaning towards 2016).
Thanks,
-Ngie
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r312348: igb broken: reporting wrong linkspeed!

[Hartmann, O.]

12-CURRENT (FreeBSD 12.0-CURRENT #74 r312348: Tue Jan 17 19:54:58 CET
2017 am64) reports the wrong linkspeed on a dualport Intel i350 NIC:

igb0: flags=8843 metric 0 mtu
1500
options=653dbb
ether xx:xx:xx:xx:xx:xx inet 192.168.0.111 netmask 0xff00 broadcast
192.168.0.255 nd6 options=29
media: Ethernet autoselect (100baseTX )
status: active

The swith the NIC is connected to reports 1 GBit. I checked with two
switches, FreeBSD reports bullshit on that subject.

I also realised severe problems of this Intel i350 dual NIC cards with
FreeBSD (we use this NIC type as a standard and so we have plenty, all
with the same issue). When the NIC negotiates its linkspeed, it very
often fall back to 100 MBit. This behaviour is not predictable, but it
occurs with a SoHo smart managed Netgear GS110TBv2 and some of our
Cisco Catalyst switches at work (some 35XX and 29XX, I do not know the
exact type).

Regards,

oh
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