On Fri, Jun 04, 2021 at 02:11:23PM +0800, Harry Lee wrote: > Hello, > > My server is running debian testing. I install two ovs version through apt: > > ``` > openvswitch-switch/testing,unstable,now 2.15.0+ds1-2 amd64 [installed] > Open vSwitch switch implementations > > openvswitch-switch-dpdk/testing,unstable,now 2.15.0+ds1-2 amd64 [installed] > DPDK enabled Open vSwitch switch implementation > ``` > > Then I found something difference between them. > > Here's my experience: > > ``` > # switch ovs version to ovs-vswitchd > update-alternatives --set ovs-vswitchd > /usr/lib/openvswitch-common/ovs-vswitchd > /etc/init.d/openvswitch-switch restart > ip addr add 10.90.67.148/25 dev br0 > ping 10.90.67.129 # network is ok > > # switch ovs version to ovs-vswitchd-dpdk > update-alternatives --set ovs-vswitchd > /usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk > /etc/init.d/openvswitch-switch restart > ip addr add 10.90.67.148/25 dev br0 > ping 10.90.67.129 # unreachable > ``` > > The same configuration, using ovs-vswitchd was reachable while using > ovs-vswitchd-dpdk was unreachable. > > Then I used `tcpdump br0` to checkout if there are packets from br0, and I > found some ARP packets: > > ``` > root@debian:~# tcpdump -i br0 -nnn > tcpdump: verbose output suppressed, use -v[v]... for full protocol decode > listening on br0, link-type EN10MB (Ethernet), snapshot length 262144 bytes > 02:14:27.010265 ARP, Request who-has 10.90.67.129 tell 10.90.67.148, length 28 > 02:14:28.034127 ARP, Request who-has 10.90.67.129 tell 10.90.67.148, length 28 > 02:14:29.058128 ARP, Request who-has 10.90.67.129 tell 10.90.67.148, length 28 > ``` > > But when I ran `ovs-ofctl dump-flows br0`, I saw n_packets is 0: > > ``` > root@debian:~# ovs-ofctl dump-flows br0 > cookie=0x0, duration=1016.243s, table=0, n_packets=0, n_bytes=0, priority=0 > actions=NORMAL > ``` > > Why does ovs-vswitchd-dpdk ignore the packet from br0? Does it need > additional configuration?
Did you configure the dpdk version to use DPDK devices and the userspace datapath? If you didn't, then these two versions of OVS were using the same code in the same way, so it's puzzling why there would have been any difference. _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
