On Nov 30, 2010, at 12:13 PM, Ben Pfaff wrote: > On Tue, Nov 30, 2010 at 12:12:16PM -0800, Justin Pettit wrote: >> On Nov 30, 2010, at 11:50 AM, Christian Fischer wrote: >> >>> On Tuesday 30 November 2010 20:38:54 Christian Fischer wrote: >>>> On Tuesday 30 November 2010 19:28:07 Ben Pfaff wrote: >>>>> On Tue, Nov 30, 2010 at 09:18:43AM +0100, Christian Fischer wrote: >>>> >>>> e1000e: Intel(R) PRO/1000 Network Driver - 1.1.2-NAPI >>> >>> and igb Intel(R) Gigabit Ethernet Network Driver - version 2.1.9 >> >> This is an issue in the Intel driver that we've seen internally. The >> driver calculates the size of the receive FIFO based on whether a VLAN >> group is defined. OVS doesn't use VLAN groups, so the driver sets the >> maximum size to 1514 bytes, but frames with VLANs are 1518. Jesse >> reworked the way VLANs are handled in Linux to make this class of >> problems go away, which should make it into 2.6.37. We may look at >> patching the driver to work with existing kernels. If we do that, >> we'll forward the patch to you. > > Should we document the issue somewhere in the tree, e.g. INSTALL.Linux?
As you know, we've run into a number of troubled drivers when it comes to VLAN processing. In the next few weeks, we'll be adding a self-test utility that users and NIC vendors can run to see if there are problems with a particular driver. When we document the purpose of that, we should probably include a list of drivers with known problems and whether a fixed driver is available. --Justin _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss_openvswitch.org
