[dpdk-dev] Virtual NIC interface fails to receive packets

[Shankari Vaidyalingam]

Hi,

I'm trying to test the l2fwd sample application by passing packets from
traffic generator.
I'm doing this testing in a VM with a configuration hav‌ing virtual NIC
port.
When I bind the virtual NIC port with the igb driver, the interface doesnt
get listed in the "ifconfig" output.
Also the virtual NIC port fails to receive packets from the traffic
generator after the interface is bound to igb driver.
Please let me know whether this is the expected behavior and also let me
know how I can make the traffic pass through the port
bound to the igb driver.

While starting the VM the interfaces currently active:

controller at controller-VirtualBox:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 08:00:27:21:a9:02
          inet addr:192.168.56.101  Bcast:192.168.56.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe21:a902/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:70 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1180 (1.1 KB)  TX bytes:14504 (14.5 KB)

eth1      Link encap:Ethernet  HWaddr 08:00:27:ef:8b:a1
          inet addr:192.168.56.101  Bcast:192.168.56.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feef:8ba1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:80 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1180 (1.1 KB)  TX bytes:15132 (15.1 KB)

eth2      Link encap:Ethernet  HWaddr 08:00:27:bc:04:b6
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:febc:4b6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:150 errors:0 dropped:0 overruns:0 frame:0
          TX packets:215 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:12304 (12.3 KB)  TX bytes:25233 (25.2 KB)

eth4      Link encap:Ethernet  HWaddr 08:00:27:b7:3a:25
          inet6 addr: fe80::a00:27ff:feb7:3a25/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:196 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:44609 (44.6 KB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:300 errors:0 dropped:0 overruns:0 frame:0
          TX packets:300 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:18580 (18.5 KB)  TX bytes:18580 (18.5 KB)


After executing this command >>>>


controller at controller-VirtualBox:~/dpdk-1.7.1$ sudo insmod
$RTE_SDK/$RTE_TARGET/kmod/igb_uio.ko
controller at controller-VirtualBox:~/dpdk-1.7.1$ sudo
$RTE_SDK/tools/dpdk_nic_bind.py --bind=igb_uio 00:08.0 00:09.0 00:0a.0
Routing table indicates that interface 0000:00:08.0 is active. Not modifying
Routing table indicates that interface 0000:00:09.0 is active. Not modifying
controller at controller-VirtualBox:~/dpdk-1.7.1$ sudo
$RTE_SDK/tools/dpdk_nic_bind.py --status

Network devices using DPDK-compatible driver
============================================
0000:00:0a.0 '82545EM Gigabit Ethernet Controller (Copper)' drv=igb_uio
unused=e1000

Network devices using kernel driver
===================================
0000:00:08.0 '82545EM Gigabit Ethernet Controller (Copper)' if=eth0
drv=e1000 unused=igb_uio *Active*
0000:00:09.0 '82545EM Gigabit Ethernet Controller (Copper)' if=eth1
drv=e1000 unused=igb_uio *Active*
0000:00:11.0 '82545EM Gigabit Ethernet Controller (Copper)' if=eth2
drv=e1000 unused=igb_uio *Active*

Other network devices
=====================
<none>

got the below output:







controller at controller-VirtualBox:~$ ifconfig eth4 >>> Corresponds to the
interface bound to igb driver

eth4: error fetching interface information: Device not found
controller at controller-VirtualBox:~$ ifconfig eth2
eth2      Link encap:Ethernet  HWaddr 08:00:27:bc:04:b6
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:febc:4b6/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:197 errors:0 dropped:0 overruns:0 frame:0
          TX packets:271 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:15864 (15.8 KB)  TX bytes:30592 (30.5 KB)

controller at controller-VirtualBox:~$ ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 08:00:27:ef:8b:a1
          inet addr:192.168.56.101  Bcast:192.168.56.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feef:8ba1/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:90 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1180 (1.1 KB)  TX bytes:17162 (17.1 KB)aff


          After this when I send traffic with this MAC >>> 080027b73a25
traffic does not flow to this interface

         Regards
         Shankari.V