Re: LAN ure interface problem

On 22 Oct 2021, at 14:00, Ludovit Koren wrote:

> Hi,
>
> I have installed FreeBSD 14.0-CURRENT #1 
> main-n250134-225639e7db6-dirty
> on my notebook HP EliteBook 830 G7 and I am using RealTek usb LAN
> interface:
>
> ure0 on uhub0
> ure0: <Realtek USB 10/100/1000 LAN, class 0/0, rev 3.00/30.00, addr 1> 
> on usbus1
> miibus0: <MII bus> on ure0
> rgephy0: <RTL8251/8153 1000BASE-T media interface> PHY 0 on miibus0
> rgephy0: OUI 0x00e04c, model 0x0000, rev. 0
> rgephy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 
> 1000baseT-FDX, 1000baseT-FDX-master, auto
> ue0: <USB Ethernet> on ure0
> ue0: bpf attached
> ue0: Ethernet address: 00:e0:4c:68:04:20
>
>
> When there is bigger load on the interface, for example rsync of the 
> big
> directory, the carrier is lost. The only solution I found is to remove
> and insert the usb interface; ifconfig ue0 down, ifconfig ue0 up did 
> not
> help. The output of the ifconfig:
>
> ue0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 
> 1500
>         options=68009b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
>         ether 00:e0:4c:68:04:20
>         inet 192.168.1.18 netmask 0xffffff00 broadcast 192.168.1.255
>         media: Ethernet autoselect (100baseTX <full-duplex>)
>         status: active
>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
>
> I do not know and did not find anything relevant, if the driver is 
> buggy
> or the hardware has some problems. Please, advice.

I found that issuing a usbconf reset usually helps to bring it back.

That said I have a machine with a port on a root hub directly and there 
it behaves a lot better compared to when I connect it to different port 
on the 2nd root hub with an intermediate uhub on the same machine.

/bz