[dpdk-dev] Question on using SR-IOV with dpdk apps

[Anjali Kulkarni]

Forgot to clarify, this is a specialized app, and the first parameter of
each () is the dpdk port no.

On 8/4/14 12:43 PM, "Anjali Kulkarni" <anjali at juniper.net> wrote:

>Hi,
>
>I am using SR-IOV and pass through to run a DPDK app. I am running it on
>host. SR-IOV should split the NIC into multiple Vfs. I have split each NIC
>into 2 Vfs. However, when I run the DPDK app, I get error initializing the
>port no.2 of DPDK.
>I am running the app with these options:
>--rx "(0,0,0,1),(1,0,2,1), (2,0,3,1), (3,0,4,1)" --tx "(0,1), (1,1),
>(2,1), (3,1)"
>
>This is for 2 physical NICs, each having 2 Vfs. The error I get is:
>
>Initializing NIC port 0 ...                                    |
>|RPIOIF DETACHED  
>|Initializing NIC port 0 RX queue 0 ...                         |
>|                 
>|Initializing NIC port 0 TX queue 0 ...                         |
>|HOSTIF DETACHED  
>|Initializing NIC port 1 ...                                    |
>|                 
>|Initializing NIC port 1 RX queue 0 ...                         |
>|                 
>|Initializing NIC port 1 TX queue 0 ...                         |
>|                 
>|Initializing NIC port 2 ...                                    |
>|                 
>|PANIC in app_init_nics():                                      |
>|                 
>|Cannot init NIC port 2 (-22)
>
>
>Can someone pls clarify how DPDK views it's port nos, i.e. Scans the
>devices and sees each nic? I see 4 /dev/uioX devices. I assume it scans
>for these igb_uio devices. These are present. Then why can it not detect
>the other 2 NICs?
>
>Thanks
>Anjali
>