[dpdk-dev] Question on using SR-IOV with dpdk apps
bruce.richardson at intel.com
Mon Aug 4 21:53:04 CEST 2014
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Anjali Kulkarni
> Sent: Monday, August 04, 2014 12:45 PM
> To: dev at dpdk.org
> Subject: Re: [dpdk-dev] Question on using SR-IOV with dpdk apps
> 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:
> >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?
For debugging issues with PCI devices not being found, can you please include the output from the EAL on startup, especially any messages concerning the PCI bus scan being done.
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