More information: the i40e driver on host (ubuntu16.04) was 2.2.4, but I tried the latest 2.7.26 i40e driver and it had the same problem. DPDK 17.05 was running in a linux VM, but I don't think the latest DPDK has solved the problem. It's easy to reproduce.
On Fri, Dec 14, 2018 at 4:28 PM Min Tang <tommyt...@gmail.com> wrote: > Hi All: > > When vlan ID was set on a VF from host by "ip link set <pf> vf <vf> vlan > <vlan id>", other VF with the same ID could not ping it. Packet capturing > showed that it could receive packets but it failed to send packet. There > was no such issue with linux driver. I understand that it needs vlan > stripping/insertion to work: PF strips vlan tag when sending packet to VF > and insert vlan tag for packets received from VF. It looked like that vlan > insertion did not work although vlan stripping worked fine. > > The problem was caused by vlan stripping enabling in i40evf_init_vlan. It > worked after I made the following change. To make port vlan work, we have > to enable vlan stripping, but I don't know why enabling vlan stripping > makes vlan insertion fail. The ixgbe driver does not have the issue. > > Index: git/drivers/net/i40e/i40e_ethdev_vf.c > =================================================================== > --- git.orig/drivers/net/i40e/i40e_ethdev_vf.c > +++ git/drivers/net/i40e/i40e_ethdev_vf.c > > @@ -1633,9 +1632,6 @@ i40evf_init_vlan(struct rte_eth_dev *dev > struct rte_eth_dev_data *data = dev->data; > int ret; > > - /* Apply vlan offload setting */ > - i40evf_vlan_offload_set(dev, ETH_VLAN_STRIP_MASK); > - > /* Apply pvid setting */ > ret = i40evf_vlan_pvid_set(dev, data->dev_conf.txmode.pvid, > data->dev_conf.txmode.hw_vlan_insert_pvid); > >
