em WOL_MCAST repowers machine after poweroff [Was: Re: em JumboFrame improovement and PCIe addon-card regression]

[Harald Schmalzbauer]

Jack Vogel schrieb am 27.04.2010 23:58 (localtime):
> Thanks Harald,
> 
> Have already been made aware of this, its due to the broadcast WOL being 
> enabled, I will be
> fixing the problem shortly. Sorry for the inconvenience.

Hello Jack,

I saw your RELENG_8 change and recompiled one kernel today. It seems 
that you only disabled WOL_*CAST for 7.0.5 adapters. Here's one 
S3200SHLX board, which has two onboard nics (em0 with WOL_*CAST disabled 
and em1 with WOL_* enabled):

em0: <Intel(R) PRO/1000 Network Connection 7.0.5> port 0x30e0-0x30ff mem 
0xe1b00000-0xe1b1ffff,0xe1b20000-0xe1b20fff irq 20 at device 25.0 on pci0
em0: Using MSI interrupt
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>

em1: <Intel(R) PRO/1000 Legacy Network Connection 1.0.1> port 
0x1000-0x103f mem 0xe1920000-0xe193ffff,0xe1900000-0xe191ffff irq 18 at 
device 2.0 on pci4
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 
1500 
options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>

I set this options manually on another box and with these em1 settings 
the machine powers up immediately.
But I have a much more severe problem:
I disabled WOL_MCAST with ifconfig for one of my cold-standby machines. 
But the machine doesn't wake up any more, even if I can see the WOL 
packets arriving at the NIC (LED blinks).
Since the machine also doesn't power up on WOL when shutted down via 
ESXi I thought that was an issue with BIOS49, which I recently upgraded 
to. I filed an intel reseller case -> status still in progress.
Is it possible that the new code also broke intentionally WOL events?

Thanks,

-Harry

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