Hi Anning,
> -----Original Message----- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Caianning > Sent: Friday, November 4, 2016 10:51 AM > To: users at dpdk.org; dev at dpdk.org > Subject: [dpdk-dev] HOW to forward vlan pkt using DPDK loadbalancer and L2FD, > with intel 82599ES > > HI, > > I am using DPDK 16.07 example loadbalancer to as LB to forward vlan > pkt > to applications. LB and applications are using VFs bound with DPDK igb_uio > driver. > But I found the packet can not be send from LB to application. Pkt input to LB > with vlan, after LB processing it is sent out to application using another VF. > > As 82599 need vlan filters if we use VF to process vlan pkts, in the LB we > called > rte api to add a vlan filter and enable vlan flilter. And set port_conf with > vlan > strip off. > And for the application(L2FWD) we use the cmd: ip link set PFxxx VF yy vlan > VLANID. > > In the LB ,we can receive pkts with vlan, after processing(cut the head and > add > another L2 head with same vlan tag, set destination MAC to application VF), > it is > send out to the application VF. > the result is: LB can still processing ,but all the pkt post. > > We also did an experiment using testPMD to forward vlan pkt to application on > the same VF used by LB, and it is OK. > We tried kinds of different set of vlan filter, vlan strip, ip link set, but > found no > solution. > > Does anyone meet the similar problem? And what factor casued the difference? > > Thx. I saw you mentioned testpmd is fine. Testpmd is a very simple example, normally it forwards packets blindly. It means there's no route rule. It just forwards packets from one port to another. I guess the difference is the APP you use has some rules for routing/swithing.
