[dpdk-dev] LINUX VF

[Nishant Verma]

Hi,

I am trying to configure SRIOV on my SUPERMICRO BLADES.
I assigned 10G NIC to igb_uio. After that created 4 VF's.

Out of 4 VF's, 3 are used by DPDK App and one I am assigning to Linux
kernel.
Now when I am assigning IP to a virtual interface on top of Linux VF after
PF is up. The first time it takes the IP but internally it just goes down
and comes up again. That basically leads to change in MAC address of the
virtual interface VF.

After this, i am not able to send or receive any packet on a virtual
interface on top of linuxVF. If I down everything on Linux side, then UP
the interface and re-create the virtual on top of Linux VF then things
works, becuase, in this case, MAC address of both the VF and virtual
interface on top of VF are same.

My Question is, Why linuxVF is going down? How can i stop it or can have
same MAC address every time?


---
This is when i assigned interface to linux VF

[root at localhost aavila]# ifconfig enp2s16f7
enp2s16f7: flags=4098<BROADCAST,MULTICAST>  mtu 1500
        ether 02:7f:48:b1:a7:b9  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
----
After creating virtual NIC and assigning IP

7: enp2s16f7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
qlen 1000
    link/ether f6:45:8f:03:ba:1a brd ff:ff:ff:ff:ff:ff
    inet6 fe80::f445:8fff:fe03:ba1a/64 scope link
       valid_lft forever preferred_lft forever
8: vlan2034 at enp2s16f7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP
    link/ether f6:45:8f:03:ba:1a brd ff:ff:ff:ff:ff:ff
    inet 10.31.226.6/20 scope global vlan2034
       valid_lft forever preferred_lft forever
    inet6 fe80::f445:8fff:fe03:ba1a/64 scope link
       valid_lft forever preferred_lft forever
---------

After some seconds...

7: enp2s16f7: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 02:7f:48:b1:a7:b9 brd ff:ff:ff:ff:ff:ff
8: vlan2034 at enp2s16f7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP
    link/ether f6:45:8f:03:ba:1a brd ff:ff:ff:ff:ff:ff
    inet 10.31.226.6/20 scope global vlan2034
       valid_lft forever preferred_lft forever


----
Here is the dmesg output :

[  320.341653] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  320.341686] ixgbevf 0000:02:10.7: NIC Link is Down
[  322.338665] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  323.340775] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  324.341407] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  324.341428] ixgbevf 0000:02:10.7: NIC Link is Down
[  326.338448] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  327.340536] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  328.341172] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  328.341194] ixgbevf 0000:02:10.7: NIC Link is Down
[  328.341252] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  329.342992] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  330.343652] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  330.343698] ixgbevf 0000:02:10.7: NIC Link is Down
[  330.343770] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  331.344292] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  333.344258] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  334.344630] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  334.344653] ixgbevf 0000:02:10.7: NIC Link is Down
[  336.341439] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  380.276206] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  381.276826] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  381.276849] ixgbevf 0000:02:10.7: NIC Link is Down
[  381.385871] IPv6: ADDRCONF(NETDEV_UP): enp2s16f7: link is not ready
[  381.385874] 8021q: adding VLAN 0 to HW filter on device enp2s16f7
[  381.386386] device enp2s16f7 entered promiscuous mode
[  381.394896] IPv6: ADDRCONF(NETDEV_UP): vlan2034: link is not ready
[  382.343248] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  382.353248] IPv6: ADDRCONF(NETDEV_CHANGE): vlan2034: link becomes ready
[  383.353628] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  384.354004] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  385.354582] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  386.354958] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  386.355252] IPv6: ADDRCONF(NETDEV_CHANGE): enp2s16f7: link becomes ready
[  387.355899] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  388.356533] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  389.357654] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  390.358357] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  391.359263] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  392.359965] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  393.362737] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  393.362993] ixgbevf 0000:02:10.7: NIC Link is Down
[  394.357568] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  395.359945] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  395.360161] ixgbevf 0000:02:10.7: NIC Link is Down
[  395.360205] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps
[  397.355218] ixgbevf 0000:02:10.7 enp2s16f7: Polling for VF0 mailbox ack
timedout
[  397.355433] ixgbevf 0000:02:10.7: NIC Link is Down
[  398.354374] ixgbevf 0000:02:10.7: NIC Link is Up 10 Gbps






Rgds,
Nishant