RE: [E1000-devel] fail to add 64 VLANs or more when SR-IOV is enabled

From: Madoka Komatsubara
Date: Wed Apr 02 2014 - 21:14:39 EST



> -----Original Message-----
> From: Fujinaka, Todd [mailto:todd.fujinaka@xxxxxxxxx]
> Sent: Thursday, April 03, 2014 8:23 AM
> To: Komatsubara Madoka(小松原 円); Skidmore, Donald C;
> linux-kernel@xxxxxxxxxxxxxxx; e1000-devel@xxxxxxxxxxxxxxxxxxxxx;
> netdev@xxxxxxxxxxxxxxx
> Cc: Shimamoto Hiroshi(島本 裕志); Baba Hiroshi(馬場 裕司)
> Subject: RE: [E1000-devel] fail to add 64 VLANs or more when SR-IOV is enabled
>
> I think you're running into the filter limit for VFs.
>

Hi Todd,

Thank you for the quick response.
How can I increase the limit?


Regards,
Madoka Komatsubara



> Todd Fujinaka
> Software Application Engineer
> Networking Division (ND)
> Intel Corporation
> todd.fujinaka@xxxxxxxxx
> (503) 712-4565
>
>
> -----Original Message-----
> From: Madoka Komatsubara [mailto:m-komatsubara@xxxxxxxxxxxxx]
> Sent: Wednesday, April 02, 2014 2:11 AM
> To: Skidmore, Donald C; linux-kernel@xxxxxxxxxxxxxxx;
> e1000-devel@xxxxxxxxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx
> Cc: Hiroshi Shimamoto; Hiroshi Baba
> Subject: Re: [E1000-devel] fail to add 64 VLANs or more when SR-IOV is enabled
>
>
> >-----Original Message-----
> >From: Komatsubara Madoka(小松原 円)
> >Sent: Thursday, March 27, 2014 6:11 PM
> >To: 'linux-kernel@xxxxxxxxxxxxxxx'; 'e1000-devel@xxxxxxxxxxxxxxxxxxxxx';
> 'netdev@xxxxxxxxxxxxxxx'
> >Cc: Shimamoto Hiroshi(島本 裕志); Baba Hiroshi(馬場 裕司)
> >Subject: fail to add 64 VLANs or more when SR-IOV is enabled
> >
> >Hi all,
> >
> >
> >We're facing an issue that we cannot add 64 VLANs or more per VF.
> >When using SR-IOV, pass through a VF to the KVM guest and a lot of VLANs,
> we could add 63 VLANs using vconfig but we >failed to add 64th VLAN.
> >We'd like to use many VLANs on the guest with SR-IOV.
> >We're using Intel's 82599EB chip with ixgbe and ixgbevf driver.
> >
> >Has anyone seen the same issue?
> >Is there any idea to solve this?
> >
>
> Hi Donald,
>
> Do you also notice this problem?
> We're facing an issue that we can use only 64 VLANs per VF.
> We're using Intel's 82599EB chip with ixgbe and ixgbevf driver.
>
>
> Is it subject to the specification restrictions only 64 VLAN can use per VF?
> We'd like to use about 2000 VLAN per VF.
>
> Does it come from hardware?
>
>
>
> Regards,
> Madoka Komatsubara
>
>
> >The below instruction is a reproducing method.
> >Create hundred VLANs on the guest.
> >
> ># for i in `seq 100 199`; do vconfig add eth2 $i; ifconfig 192.168.$i.1/24;
> done
> >
> ># vconfig add eth2 100
> >Added VLAN with VID == 100 to IF -:eth2:-
> >
> ># vconfig add eth2 101
> >Added VLAN with VID == 101 to IF -:eth2:-
> >
> ># vconfig add eth2 102
> >Added VLAN with VID == 102 to IF -:eth2:-
> >
> >...
> >
> ># vconfig add eth2 162
> >Added VLAN with VID == 162 to IF -:eth2:-
> >
> ># vconfig add eth2 163
> >ERROR: trying to add VLAN #163 to IF -:eth2:- error: Permission denied
> >SIOCSIFADDR: No such device
> >eth2.163: unknown interface: No such device
> >
> ># vconfig add eth2 164
> >ERROR: trying to add VLAN #164 to IF -:eth2:- error: Permission denied
> >SIOCSIFADDR: No such device
> >eth2.164: unknown interface: No such device
> >
> ># vconfig add eth2 165
> >ERROR: trying to add VLAN #165 to IF -:eth2:- error: Permission denied
> >SIOCSIFADDR: No such device
> >eth2.165: unknown interface: No such device
> >
> >
> >thanks,
> >Madoka Komatsubara
>
>
> -------------------------------------------------------------------------
> -----
> _______________________________________________
> E1000-devel mailing list
> E1000-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.sourceforge.net/lists/listinfo/e1000-devel
> To learn more about Intel® Ethernet, visit
> http://communities.intel.com/community/wired
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/