* Re: [dpdk-dev] Sending & Receiving Packets
@ 2014-01-20 18:31 Sharma, RishiX
2014-01-20 19:08 ` Wiles, Roger Keith
0 siblings, 1 reply; 5+ messages in thread
From: Sharma, RishiX @ 2014-01-20 18:31 UTC (permalink / raw)
To: 'dev@dpdk.org'
Hi Keith,
Just to give you the background .I need to test the packet throughput performance of one of my device using DPDK .
The DUT is connected to my Linux host machine with one of the port and I want to run the Pktgen on my host machine to send the packets to the DUT where DPDK (Testpmd app) is running in fwd rx_only mode.I have setup one of the network port as igb_uio port and using it .
I'm able to compile and run the pktgen with start all but I don't know how to configure the pktgen to send packets to DUT.
I want to know the steps and exact commands required to send packets to my DUT .
-Rishi
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [dpdk-dev] Sending & Receiving Packets
2014-01-20 18:31 [dpdk-dev] Sending & Receiving Packets Sharma, RishiX
@ 2014-01-20 19:08 ` Wiles, Roger Keith
0 siblings, 0 replies; 5+ messages in thread
From: Wiles, Roger Keith @ 2014-01-20 19:08 UTC (permalink / raw)
To: Sharma, RishiX; +Cc: dev
Hi Rishi,
Normally I use 'start <portlist|all>'
pktgen> start 0 # Start port 0 sending
pktgen> start 0,3 # Start port 0 and 3 sending
pktgen> start 0-3 # start port 0, 1, 2 and 3 send packets.
pktgen> start all # start sending on all ports
pktgen> stp # stop sending on all ports
pktgen> str # start sending on all ports
On the main screen is the single packet send configuration for the ports. You need to make sure you set your dst mac to the correct DUT MAC address. If you are fowarding L3 packets then you need to make sure the IP dst/src addresses are correct.
set mac <portlist> etheraddr - Set MAC addresses 00:11:22:33:44:55
You can use 0011:2233:4455 format as well
set ip src|dst <portlist> ipaddr - Set IP addresses
set ip dst 0 192.168.0.10
set ip src 0 192.168.0.1/24
Let me know if that helps.
Thanks
++Keith
Keith Wiles, Principal Technologist for Networking member of the CTO office, Wind River
direct 972.434.4136 mobile 940.213.5533 fax 000.000.0000
[Powering 30 Years of Innovation]<http://www.windriver.com/announces/wr30/>
On Jan 20, 2014, at 12:31 PM, Sharma, RishiX <rishix.sharma@intel.com<mailto:rishix.sharma@intel.com>> wrote:
Hi Keith,
Just to give you the background .I need to test the packet throughput performance of one of my device using DPDK .
The DUT is connected to my Linux host machine with one of the port and I want to run the Pktgen on my host machine to send the packets to the DUT where DPDK (Testpmd app) is running in fwd rx_only mode.I have setup one of the network port as igb_uio port and using it .
I'm able to compile and run the pktgen with start all but I don't know how to configure the pktgen to send packets to DUT.
I want to know the steps and exact commands required to send packets to my DUT .
-Rishi
^ permalink raw reply [flat|nested] 5+ messages in thread
* [dpdk-dev] Sending & Receiving Packets
@ 2013-06-24 4:52 Peter Chen
2013-06-24 5:03 ` Wiles, Roger Keith
0 siblings, 1 reply; 5+ messages in thread
From: Peter Chen @ 2013-06-24 4:52 UTC (permalink / raw)
To: dev
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I was wondering how I can send/receive packets from my computer to my
server which has dpdk running. Since what seems to happen is that dpdk
binds to the ethernet device, what would be its IP address?
For example how would I send a ping from one computer to my server with
dpdk binded to the NIC?
Would I send a packet with only MAC address and dpdk binded NIC would pick
it up and move the packet up to dpdk and then to the user space? Just kind
of confused how that works. I would be grateful for any help!
Peter
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [dpdk-dev] Sending & Receiving Packets
2013-06-24 4:52 Peter Chen
@ 2013-06-24 5:03 ` Wiles, Roger Keith
[not found] ` <CAMGYKAfYt3xyZj-Np6bsgydGHW_FKv81ZxODFG0_+U+KohQZig@mail.gmail.com>
0 siblings, 1 reply; 5+ messages in thread
From: Wiles, Roger Keith @ 2013-06-24 5:03 UTC (permalink / raw)
To: Peter Chen; +Cc: <dev@dpdk.org>
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Hi Peter,
When DPDK is running on the server it takes control of the ports, which means the network stack that would answer a ping (ICMP Echo) would not be attached to the port any more. You would have to add code to DPDK as an application to receive the ICMP Echo packet and respond with a ICMP Reply packet. The other method would be to attach a network stack as the application to DPDK and use that network stack to receive and send packets.
Writing a simple DPDK application to receive packets off the ports and look for ICMP Echo request and to respond with a ICMP Echo reply is not that hard as I do that work in Pktgen. If you want to do more then just grab packets and determine if you need to send out a packet you would need to port some stack on top of DPDK like lwIP. You can this other ways, but it would take a bit more text to describe.
Have a look at Pktgen on GitHub and you can look at that code for a basic example.
Thank you, ++Keith
-------------------------------
Keith Wiles
Principal Technologist for Networking
cell 972-213-5533
Wind River Systems
On Jun 23, 2013, at 11:52 PM, Peter Chen <peter.feifan.chen@gmail.com<mailto:peter.feifan.chen@gmail.com>>
wrote:
I was wondering how I can send/receive packets from my computer to my server which has dpdk running. Since what seems to happen is that dpdk binds to the ethernet device, what would be its IP address?
For example how would I send a ping from one computer to my server with dpdk binded to the NIC?
Would I send a packet with only MAC address and dpdk binded NIC would pick it up and move the packet up to dpdk and then to the user space? Just kind of confused how that works. I would be grateful for any help!
Peter
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^ permalink raw reply [flat|nested] 5+ messages in thread
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2014-01-20 18:31 [dpdk-dev] Sending & Receiving Packets Sharma, RishiX
2014-01-20 19:08 ` Wiles, Roger Keith
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2013-06-24 4:52 Peter Chen
2013-06-24 5:03 ` Wiles, Roger Keith
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