Intel I219 V2 (if_em) Wake on LAN not working

[Sean Bruno]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512



On 03/24/16 17:44, Eric van Gyzen wrote:
> On 03/23/16 06:57 AM, Guido Falsi wrote:
>> Hi,
>> 
>> I have a new machine with the I219 ethernet adapter. (PCI
>> deviceID: 0x15b8).
>> 
>> It works fine on the OS, but I cannot enable wake on lan on it in
>> any way:
>> 
>> # ifconfig em0 em0:
>> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
>> 1500
>> 
>> options=4019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,
VLAN_HWTSO>
>>
>> 
ether XXX
>> inet XXX netmask 0xffffff00 broadcast XXX nd6
>> options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: Ethernet
>> autoselect (100baseTX <full-duplex>) status: active # ifconfig
>> em0 wol # ifconfig em0 em0:
>> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
>> 1500
>> 
>> options=4019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,
VLAN_HWTSO>
>>
>> 
ether XXX
>> inet XXX netmask 0xffffff00 broadcast XXX nd6
>> options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: Ethernet
>> autoselect (100baseTX <full-duplex>) status: active # sysctl
>> dev.em.0.wake=1 dev.em.0.wake: 0 -> 1 # ifconfig em0 em0:
>> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
>> 1500
>> 
>> options=4019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,
VLAN_HWTSO>
>>
>> 
ether XXX
>> inet XXX netmask 0xffffff00 broadcast XXX nd6
>> options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: Ethernet
>> autoselect (100baseTX <full-duplex>) status: active # ifconfig
>> em0 wol # ifconfig em0 em0:
>> flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
>> 1500
>> 
>> options=4019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,
VLAN_HWTSO>
>>
>> 
ether XXX
>> inet XXX netmask 0xffffff00 broadcast XXX nd6
>> options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: Ethernet
>> autoselect (100baseTX <full-duplex>) status: active #
>> 
>> 
>> 
>> Sending the WOL packet does not work after shutdown, while it
>> works if turning off the machine from the BIOS (obviously
>> appropriate flags in the BIOS are turned on) with the power
>> button.
> 
> I have a new Dell XPS 8900 with the same NIC and the same problem.
> I'm running head (r297219).  I made the following two changes:
> 
> diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index
> 6f7458c..16c7495 100644 --- a/sys/dev/e1000/if_em.c +++
> b/sys/dev/e1000/if_em.c @@ -5275,7 +5275,8 @@
> em_get_wakeup(device_t dev) NVM_INIT_CONTROL3_PORT_A, 1,
> &eeprom_data); break; } -       if (eeprom_data & apme_mask) +
> device_printf(dev, "em_get_wakeup: eeprom_data %hu\n",
> eeprom_data); +       //if (eeprom_data & apme_mask) adapter->wol =
> (E1000_WUFC_MAG | E1000_WUFC_MC); /* * We have the eeprom settings,
> now apply the special cases
> 
>> From that, I see that eeprom_data is 0, so adapter->wol stays
>> zero, so ifconfig
> doesn't show any WOL capabilities.  When I ignore the eeprom_data
> by commenting out the "if" condition, WOL capabilities appear in
> ifconfig.  However, even when I enable WOL with ifconfig, WOL still
> doesn't work after a "shutdown -p now". WOL only works after I
> power off using the power button before the kernel boots.
> 
> Eric



I'm guessing that we have some kind of missing test case.  Let's start
a bugzilla report so I can bring it to Intel's attention.

I'll need a testcase as well so we can add this to regressions in the la
b.

sean

bcc intel folks
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=
=vU3f
-----END PGP SIGNATURE-----