e1000: more than two seconds to get the flag RUNNING

e1000: more than two seconds to get the flag RUNNING

[Nicolas Dichtel]

Hi,

maybe this problem has already been discussed, but I didn't find the thread.
When I put an interface managed by the e1000 driver up, down and up again, I 
must wait more than 2 seconds to get the flag running again.

Here is the sequence:

shelby:~# uname -a
Linux shelby 2.6.37-rc5+ #9 SMP Wed Dec 15 13:16:10 EST 2010 i686 GNU/Linux
shelby:~# lsmod | grep e1000
e1000                  76543  0
shelby:~# lspci | grep Gigabit
01:09.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet 
Controller (rev 02)
shelby:~# cat check_link_state.sh
#!/bin/bash

sleep_time=$1
ip link set eth0 up
ip link set eth0 down
ip link set eth0 up
while [ $sleep_time -gt 0 ] ; do
     date
     #ip link show eth0
     ifconfig eth0 | grep MULTICAST
     sleep 1
     echo ""
     sleep_time=`expr $sleep_time - 1`
done
shelby:~# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:30:1b:b4:dc:88
           inet addr:10.16.0.72  Bcast:10.16.0.255  Mask:255.255.255.0
           inet6 addr: fe80::230:1bff:feb4:dc88/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:22051 errors:0 dropped:0 overruns:0 frame:0
           TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:2480685 (2.3 MiB)  TX bytes:5242 (5.1 KiB)

shelby:~# ./check_link_state.sh 3
[83270.080175] ADDRCONF(NETDEV_UP): eth0: link is not ready
Thu Dec 16 12:45:56 EST 2010
           UP BROADCAST MULTICAST  MTU:1500  Metric:1

Thu Dec 16 12:45:57 EST 2010
           UP BROADCAST MULTICAST  MTU:1500  Metric:1
[83271.828371] e1000: eth0 NIC Link is Up 100 Mbps Half Duplex, Flow Control: None
[83271.835878] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

Thu Dec 16 12:45:58 EST 2010
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

shelby:~#

I get the same result with a 2.6.15, so it seems that the problem is here since 
a long time.
Has anyone an input for this problem?


Regards,
Nicolas

RE: e1000: more than two seconds to get the flag RUNNING

[Ronciak, John]

I'm assuming when you say "get the flag RUNNING" you mean to get link.  Is that right?  Are you connected to a switch?  It is entirely possible to wait 2 seconds to get link on a 1000Base-T (RJ45) link.  By specification link can take as much as 4 seconds.  Do you have spanning tree enabled on the switch?  That could be delaying link as well.

To check this connect it back to back to another system.  With this old of an adapter you may need to connect the two systems with a cross-over cable.

Cheers,
John


> -----Original Message-----
> From: Nicolas Dichtel [mailto:nicolas.dichtel@6wind.com]
> Sent: Thursday, December 16, 2010 8:17 AM
> To: Kirsher, Jeffrey T; Brandeburg, Jesse; Allan, Bruce W; Wyborny,
> Carolyn; Skidmore, Donald C; Rose, Gregory V; Waskiewicz Jr, Peter P;
> Duyck, Alexander H; Ronciak, John
> Cc: netdev
> Subject: e1000: more than two seconds to get the flag RUNNING
> 
> Hi,
> 
> maybe this problem has already been discussed, but I didn't find the
> thread.
> When I put an interface managed by the e1000 driver up, down and up
> again, I must wait more than 2 seconds to get the flag running again.
> 
> Here is the sequence:
> 
> shelby:~# uname -a
> Linux shelby 2.6.37-rc5+ #9 SMP Wed Dec 15 13:16:10 EST 2010 i686
> GNU/Linux shelby:~# lsmod | grep e1000
> e1000                  76543  0
> shelby:~# lspci | grep Gigabit
> 01:09.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet
> Controller (rev 02) shelby:~# cat check_link_state.sh #!/bin/bash
> 
> sleep_time=$1
> ip link set eth0 up
> ip link set eth0 down
> ip link set eth0 up
> while [ $sleep_time -gt 0 ] ; do
>      date
>      #ip link show eth0
>      ifconfig eth0 | grep MULTICAST
>      sleep 1
>      echo ""
>      sleep_time=`expr $sleep_time - 1`
> done
> shelby:~# ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:30:1b:b4:dc:88
>            inet addr:10.16.0.72  Bcast:10.16.0.255  Mask:255.255.255.0
>            inet6 addr: fe80::230:1bff:feb4:dc88/64 Scope:Link
>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>            RX packets:22051 errors:0 dropped:0 overruns:0 frame:0
>            TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
>            collisions:0 txqueuelen:1000
>            RX bytes:2480685 (2.3 MiB)  TX bytes:5242 (5.1 KiB)
> 
> shelby:~# ./check_link_state.sh 3
> [83270.080175] ADDRCONF(NETDEV_UP): eth0: link is not ready Thu Dec 16
> 12:45:56 EST 2010
>            UP BROADCAST MULTICAST  MTU:1500  Metric:1
> 
> Thu Dec 16 12:45:57 EST 2010
>            UP BROADCAST MULTICAST  MTU:1500  Metric:1 [83271.828371]
> e1000: eth0 NIC Link is Up 100 Mbps Half Duplex, Flow Control: None
> [83271.835878] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
> 
> Thu Dec 16 12:45:58 EST 2010
>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> 
> shelby:~#
> 
> I get the same result with a 2.6.15, so it seems that the problem is
> here since a long time.
> Has anyone an input for this problem?
> 
> 
> Regards,
> Nicolas

Re: e1000: more than two seconds to get the flag RUNNING

[Nicolas Dichtel]

Le 16.12.2010 17:44, Ronciak, John a écrit :
> I'm assuming when you say "get the flag RUNNING" you mean to get link.  Is that right?  Are you connected to a switch?  It is entirely possible to wait 2 seconds to get link on a 1000Base-T (RJ45) link.  By specification link can take as much as 4 seconds.  Do you have spanning tree enabled on the switch?  That could be delaying link as well.
Yes, I mean 'get the link'. I was connected to a switch, but no spanning tree.

> 
> To check this connect it back to back to another system.  With this old of an adapter you may need to connect the two systems with a cross-over cable.
I get the same issue.


Regards,
Nicolas

> 
> Cheers,
> John
> 
> 
>> -----Original Message-----
>> From: Nicolas Dichtel [mailto:nicolas.dichtel@6wind.com]
>> Sent: Thursday, December 16, 2010 8:17 AM
>> To: Kirsher, Jeffrey T; Brandeburg, Jesse; Allan, Bruce W; Wyborny,
>> Carolyn; Skidmore, Donald C; Rose, Gregory V; Waskiewicz Jr, Peter P;
>> Duyck, Alexander H; Ronciak, John
>> Cc: netdev
>> Subject: e1000: more than two seconds to get the flag RUNNING
>>
>> Hi,
>>
>> maybe this problem has already been discussed, but I didn't find the
>> thread.
>> When I put an interface managed by the e1000 driver up, down and up
>> again, I must wait more than 2 seconds to get the flag running again.
>>
>> Here is the sequence:
>>
>> shelby:~# uname -a
>> Linux shelby 2.6.37-rc5+ #9 SMP Wed Dec 15 13:16:10 EST 2010 i686
>> GNU/Linux shelby:~# lsmod | grep e1000
>> e1000                  76543  0
>> shelby:~# lspci | grep Gigabit
>> 01:09.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet
>> Controller (rev 02) shelby:~# cat check_link_state.sh #!/bin/bash
>>
>> sleep_time=$1
>> ip link set eth0 up
>> ip link set eth0 down
>> ip link set eth0 up
>> while [ $sleep_time -gt 0 ] ; do
>>      date
>>      #ip link show eth0
>>      ifconfig eth0 | grep MULTICAST
>>      sleep 1
>>      echo ""
>>      sleep_time=`expr $sleep_time - 1`
>> done
>> shelby:~# ifconfig eth0
>> eth0      Link encap:Ethernet  HWaddr 00:30:1b:b4:dc:88
>>            inet addr:10.16.0.72  Bcast:10.16.0.255  Mask:255.255.255.0
>>            inet6 addr: fe80::230:1bff:feb4:dc88/64 Scope:Link
>>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>            RX packets:22051 errors:0 dropped:0 overruns:0 frame:0
>>            TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
>>            collisions:0 txqueuelen:1000
>>            RX bytes:2480685 (2.3 MiB)  TX bytes:5242 (5.1 KiB)
>>
>> shelby:~# ./check_link_state.sh 3
>> [83270.080175] ADDRCONF(NETDEV_UP): eth0: link is not ready Thu Dec 16
>> 12:45:56 EST 2010
>>            UP BROADCAST MULTICAST  MTU:1500  Metric:1
>>
>> Thu Dec 16 12:45:57 EST 2010
>>            UP BROADCAST MULTICAST  MTU:1500  Metric:1 [83271.828371]
>> e1000: eth0 NIC Link is Up 100 Mbps Half Duplex, Flow Control: None
>> [83271.835878] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
>>
>> Thu Dec 16 12:45:58 EST 2010
>>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>
>> shelby:~#
>>
>> I get the same result with a 2.6.15, so it seems that the problem is
>> here since a long time.
>> Has anyone an input for this problem?
>>
>>
>> Regards,
>> Nicolas

-- 
Nicolas DICHTEL
6WIND
R&D Engineer

Tel: +33 1 39 30 92 10
Fax: +33 1 39 30 92 11
nicolas.dichtel@6wind.com
www.6wind.com
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