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List:       e1000-devel
Subject:    Re: [E1000-devel] Multicast filters in igbvf driver
From:       "Fujinaka, Todd" <todd.fujinaka () intel ! com>
Date:       2015-09-08 19:14:37
Message-ID: 9B4A1B1917080E46B64F07F2989DADD6535E8E24 () ORSMSX114 ! amr ! corp ! intel ! com
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We're not quite sure what's going on. Can you send the output of dmesg as well as \
"ifconfig –a" and "netstat –g"?

Keep in mind that attachments don't work on this mailing list. If the dmesg is large, \
please open a bug on e1000.sourceforge.net and attach it there.

Thanks.

Todd Fujinaka
Software Application Engineer
Networking Division (ND)
Intel Corporation
todd.fujinaka@intel.com
(503) 712-4565

From: Ravi B [mailto:bleeravi@gmail.com]
Sent: Monday, September 07, 2015 5:31 PM
To: Fujinaka, Todd; e1000-devel@lists.sourceforge.net
Subject: Multicast filters in igbvf driver

Hi Todd et.al<http://et.al>.,

I'm facing an issue with igbvf driver handling the virtual function of I350 NIC in a \
guest VM on qemu-kvm, where no multicast packets are seen in the guest.  I do see the \
multicast filters properly programmed (by writing to mailbox to communicate to host \
igb driver).  Packets are not seen even if the interface is put in promiscuous mode \
in the guest.  The only way to solve the issue is to put the physical interface (or \
physical function) of the corresponding VF in promiscuous mode on the host.

I tried looking into  in the mailing lists if any such issues are reported, but \
couldn't find one.  Could you please let me know of any known issues with igbvf \
driver in handling multicast packets or is it by design that the multicast packets \
and the filters are not engaged in.

Thank you.

Regards,
B Lee


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