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From: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>
To: "users@dpdk.org" <users@dpdk.org>
Subject: [dpdk-users] A simpler question - does DPDK run over virtual interfaces?
Date: Tue, 13 Apr 2021 11:39:07 +0000
Message-ID: <62e934307738436988aefc7d292b7f28@boeing.com> (raw)

Let me backtrack and start by asking a simpler question - can DPDK run over
virtual interfaces such as a loopback?

Thanks - Fred

> -----Original Message-----
> From: Templin (US), Fred L
> Sent: Monday, April 12, 2021 10:42 AM
> To: 'users@dpdk.org' <users@dpdk.org>
> Subject: Problems using DPDK within CORE emulations running on Ubuntu 18.04 VMs
> 
> Hi, I am running Ubuntu 18.04 in a VM running on VirtualBox. I have built and
> installed DPDK-20.11 from sources and had no troubles building by following
> the Getting Started Guide for Linux instructions:
> 
> http://doc.dpdk.org/guides/linux_gsg/intro.html
> 
> Next, within the Ubuntu VM I run the CORE network emulator:
> 
> https://www.nrl.navy.mil/Our-Work/Areas-of-Research/Information-Technology/NCS/CORE/
> 
> I have a simple two-node network setup with two CORE vnodes connected
> via a network switch, and verified that I can ping between the two nodes.
> Now, I want to experiment with the DPDK-20.11 "ip_fragmentation" and
> "ip_reassembly" example programs (which I was able to build successfully)
> but it appears that these example programs require ports to be mapped.
> 
> So, I skipped ahead to Section 5 of the Getting Started Guide for Linux
> ("Linux Drivers") and tried to follow the instructions in Section 5.5. on
> "Binding and Unbinding Network Ports to/from the Kernel Modules" by
> typing commands into one of the CORE vnode shell windows. The text
> at the end of this message shows the commands I typed and the output
> I was shown in response. In particular, the "dpdk-devbind.py --status"
> script does not appear to show a usable map of my CORE vnode
> network interfaces, and attempts to bind were unsuccessful.
> 
> Has anyone ever run DPDK out of a CORE vnode before and/or can
> you tell me what steps are needed to be able to bind CORE vnode
> interfaces so that they can be used by DPDK? Or, is DPDK simply
> incompatible with virtualization environments.
> 
> Another question - can DPDK be run over loopback interfaces?
> 
> Thanks - Fred
> 
> ---
> 
> Script started on 2021-04-12 09:54:19-0700
> root@n1: pwd
> /home/fltemplin/src/DPDK/dpdk-20.11/usertools
> root@n1: ip link sho
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 5: eth0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
>     link/ether 00:00:00:aa:00:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0
> root@n1: sudo modprobe vfio-pci
> root@n1: ip link sho
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 5: eth0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
>     link/ether 00:00:00:aa:00:00 brd ff:ff:ff:ff:ff:ff link-netnsid 0
> root@n1: ./dpdk-devbind.py --status
> 
> Network devices using kernel driver
> ===================================
> 0000:00:03.0 '82540EM Gigabit Ethernet Controller 100e' if= drv=e1000 unused=vfio-pci
> 0000:00:08.0 '82540EM Gigabit Ethernet Controller 100e' if= drv=e1000 unused=vfio-pci
> 
> No 'Baseband' devices detected
> ==============================
> 
> No 'Crypto' devices detected
> ============================
> 
> No 'Eventdev' devices detected
> ==============================
> 
> No 'Mempool' devices detected
> =============================
> 
> No 'Compress' devices detected
> ==============================
> 
> No 'Misc (rawdev)' devices detected
> ===================================
> 
> No 'Regex' devices detected
> ===========================
> root@n1: exit
> 
> Script done on 2021-04-12 09:55:41-0700
> 


             reply	other threads:[~2021-04-13 11:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13 11:39 Templin (US), Fred L [this message]
2021-04-13 16:32 ` Stephen Hemminger
2021-05-05 16:19 ` Ferruh Yigit
2021-05-05 16:27 Templin (US), Fred L

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