I think the only way you're going to get the driver to stop stripping the vlan tags is to use the latest upstream kernel. Alex Duyck added some patches for promiscuous mode & SR-IOV to exist at the same time early this year, but it's not in the standalone driver.
Todd Fujinaka Software Application Engineer Networking Division (ND) Intel Corporation todd.fujin...@intel.com (503) 712-4565 -----Original Message----- From: Rajagopalan Vivek [mailto:r.vi...@cataleya.com] Sent: Thursday, September 01, 2016 12:40 PM To: e1000-devel@lists.sourceforge.net Subject: [E1000-devel] how to disable vlan tag stripping in KVM sr-iov environment Hi I am trying to get VLAN working in KVM environment with SR-IOV. My setup is as follows RHEL 7.2 KVM host RHEL 6.4 guest Igb 82576 NIC (latest igb driver from download center i.e. 5.3.5.3) SR-IOV enabled on host and VF has been assigned to guest VM A DPDK based application running on guest sets VLAN filter (alternately I have also used ip link set devname vf X vlan tag on the host) The problem I am facing is that when VLAN tagged packet is sent from outside the host (say when I do a ping) the VLAN tag gets stripped when the packet reaches the guest. I have tried solutions suggested in various forums, few of them are - setting rxvlan off using ethtool on the main interface (Note that ethtool -k on the VF shows rx-vlan-filter: on [fixed] and I cannot change it, wonder why) - using a tag of 4095 I also tried understanding from source code by chasing the E1000_VMOLR_STRVLAN flag but I can’t seem to find the exact code path yet that will unset this flag I would really appreciate if someone can throw some pointers, especially from source code point of view as to how vlan stripping is getting activated and if it can be disabled at all Regards Vivek ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
