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Date:      Wed, 10 Jul 2013 19:47:01 +0200
From:      Guido Falsi <mad@madpilot.net>
To:        pyunyh@gmail.com
Cc:        freebsd-net@freebsd.org
Subject:   Re: re0 not working at boot on -CURRENT
Message-ID:  <51DD9E15.7070609@madpilot.net>
In-Reply-To: <20130710070431.GE2753@michelle.cdnetworks.com>
References:  <51DC726D.6040601@madpilot.net> <20130710070431.GE2753@michelle.cdnetworks.com>

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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@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 :)

-- 
Guido Falsi <mad@madpilot.net>



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