VPP/EC2 instance with SRIOV

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VPP on an EC2 instance with SR-IOV support

AWS EC2 network consists of VLAN. So DPDK should support vlan offload especially "strip on"

AWS Enhanced Networking SR-IOV VF NIC. see detail at http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking.html


EC2 multiple network interface

Prepare two network interfaces

root@choonho-dev:~# ifconfig -a
ens3      Link encap:Ethernet  HWaddr 02:12:c2:8b:bd:ee 
         inet addr:  Bcast:  Mask:
         inet6 addr: fe80::12:c2ff:fe8b:bdee/64 Scope:Link
         RX packets:172 errors:0 dropped:0 overruns:0 frame:0
         TX packets:238 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:25299 (25.2 KB)  TX bytes:26443 (26.4 KB)

ens4      Link encap:Ethernet  HWaddr 02:f8:f6:ae:24:88
         BROADCAST MULTICAST  MTU:1500  Metric:1
         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
         TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
         inet addr:  Mask:
         inet6 addr: ::1/128 Scope:Host
         UP LOOPBACK RUNNING  MTU:65536  Metric:1
         RX packets:162 errors:0 dropped:0 overruns:0 frame:0
         TX packets:162 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1
         RX bytes:11938 (11.9 KB)  TX bytes:11938 (11.9 KB)

Check NIC is SR-IOV enabled Virtual Function NIC.

root@choonho-dev:~# ethtool -i ens4
driver: ixgbevf
version: 2.12.1-k
bus-info: 0000:00:04.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: no
supports-register-dump: yes
supports-priv-flags: no


This is recommened config for dpdk section at /etc/vpp/startup.conf

 dpdk {
   dev default {
       num-rx-queues 2
       num-tx-queues 2
       vlan-strip-offload on

Running the example

The DPDK interface should be configured strip on at vlan offload

 DBGvpp# show hardware-interfaces  detail
             Name                Idx   Link  Hardware
 VirtualFunctionEthernet0/4/0       1     up   VirtualFunctionEthernet0/4/0
 Ethernet address 02:f8:f6:ae:24:88
 Intel 82599 VF
   carrier up full duplex speed 10000 mtu 9216
   pci id:            device 8086:10ed subsystem 0000:0000
   pci address:       0000:00:04.00
   max rx packet len: 9728
   max num of queues: rx 2 tx 2
   promiscuous:       unicast off all-multicast on
   vlan offload:      strip on filter off qinq off
   rx offload caps:   vlan-strip ipv4-cksum udp-cksum tcp-cksum
   tx offload caps:   vlan-insert ipv4-cksum udp-cksum tcp-cksum sctp-cksum
   rss active:        ipv4-tcp ipv6-tcp-ex ipv6-tcp ipv6-udp ipv6-ex
   rss supported:     none
   rx queues 2, rx desc 1024, tx queues 1, tx desc 1024
   cpu socket 0
   tx frames ok                                         719
   tx bytes ok                                        72021
   rx frames ok                                         723
   rx bytes ok                                        72401
   extended stats:
     rx good packets                                    723
     tx good packets                                    719
     rx good bytes                                    72401
     tx good bytes                                    72021
     rx errors                                            0
     tx errors                                            0
     rx mbuf allocation errors                            0
     rx q0packets                                         0
     rx q0bytes                                           0
     rx q0errors                                          0
     rx q1packets                                         0
     rx q1bytes                                           0
     rx q1errors                                          0
     tx q0packets                                         0
     tx q0bytes                                           0
     rx multicast packets                                 0