re0 not working at boot on -CURRENT

[Yonghyeon PYUN]

On Wed, Jul 10, 2013 at 07:47:01PM +0200, Guido Falsi wrote:
> On 07/10/13 09:04, Yonghyeon PYUN wrote:
> >On Tue, Jul 09, 2013 at 10:28:29PM +0200, Guido Falsi wrote:
> >>Hi,
> >>
> >>I have a PC with an integrate re ethernet interface, pciconf identifies
> >>it like this:
> >>
> >>re0 at pci0:3:0:0: class=0x020000 card=0x11c01734 chip=0x816810ec rev=0x07
> >>hdr=0x00
> >>
> >>I'm running FreeBSD current r252261.
> >>
> >>As stated in the subject after boot the interface does not work correctly.
> >>
> >>Using tcpdump on another host I noticed that packets (ICMP echo requests
> >>for example) do get sent, and replies generated by the other host, but
> >>the kernel does not seem to see them. Except that every now and then
> >>some packet does get to the system.
> >>
> >>I'm seeing packet 7, 27, 47, 66, 86, 106, 125, 144, 164, 183 and so on
> >>from a ping which has been running for some time. Just about one every
> >>twenty. Some pattern is showing up.
> >>
> >>this is the output of ifconfig re0 after boot:
> >>
> >>re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> >>
> >>options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
> >>         ether 00:19:99:f8:d3:0b
> >>         inet 172.24.42.13 netmask 0xffffff00 broadcast 172.24.42.255
> >>         inet6 fe80::219:99ff:fef8:d30b%re0 prefixlen 64 scopeid 0x2
> >>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> >>         media: Ethernet autoselect (100baseTX <full-duplex>)
> >>         status: active
> >>
> >>If I just touch any interface flag with ifconfig, anyone, tso, -txcsum
> >>-rxcsum, it starts working flawlessly. It keeps working also if I
> >>perform the opposite operation with ifconfig afterwards, so it is not
> >>the flag itself fixing it.
> >>
> >>This is an ifconfig after performing this exercise(it's the same, since
> >>I disabled txcsum and reactivated it in this instance):
> >>
> >>re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> >>
> >>options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
> >>         ether 00:19:99:f8:d3:0b
> >>         inet 172.24.42.13 netmask 0xffffff00 broadcast 172.24.42.255
> >>         inet6 fe80::219:99ff:fef8:d30b%re0 prefixlen 64 scopeid 0x2
> >>         nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> >>         media: Ethernet autoselect (100baseTX <full-duplex>)
> >>         status: active
> >>
> >>I don't know much about FreeBSD network drivers so i can't make theories
> >>about this. I hope someone has an idea what the problem could be.
> >>
> >>I'm available for any further information needed, test, experiment and
> >>so on.
> >
> >Could you show me dmesg output(re(4) and rgephy(4) only)?
> 
> re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F PCIe Gigabit Ethernet> port 
> 0xd000-0xd0ff mem 0xf2104000-0xf2104fff,0xf2100000-0xf2103fff irq 17 at 
> device 0.0 on pci3
> re0: Using 1 MSI-X message
> re0: turning off MSI enable bit.
> re0: Chip rev. 0x2c800000
> re0: MAC rev. 0x00000000
> re0: Ethernet address: 00:19:99:f8:d3:0b
> miibus0: <MII bus> on re0
> rgephy0: <RTL8169S/8110S/8211 1000BASE-T media interface> PHY 1 on miibus0
> rgephy0:  none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 
> 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT, 1000baseT-master, 
> 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 
> 1000baseT-FDX-flow-master, auto, auto-flow
> 
> Also, I'm loading this as a module, but, for as much as I know, this 
> should not make any difference.
> 
> 
> >Did it ever work or you see the issue only on CURRENT?
> 
> Never worked on this machine (I own it since the last days of February).
> 
> I only installed current on it. If needed I can find time to test a 
> recent 9.x snapshot on it.
> 
> I worked around the problem till now using an USB ethernet adapter, 
> always wanted to report this problem, but I've been lazy :)
> 

Would you try attached patch and let me know whether it makes any
difference?

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