twood02
commented
3 years ago This is not something that we have tested so I'm not sure if it will work. In particular, if you want packets to leave pktgen and go to ONVM that might be tricky since pktgen tries to send directly out the NIC -- I think the packets would have to leave the system, go to a switch, and then be routed back to ONVM (or are you connecting one port directly to the other with a cable?)
In any case, it seems like there is some issue with your pktgen configuration if it will not run even without ONVM. We are preparing an updated release which will include newer versions of both DPDK and pktgen -- if you want to try this out now you can use the develop branch in this repository. That might help resolve your basic pktgen problems.
To run them together you will need to modify both the pktgen and onvm manager startup script. There are some DPDK flags you need to modify to restrict the process to only allocate a portion of the huge page memory and you need to use the --file-prefix option so they use different hugetablefs entries. See https://doc.dpdk.org/guides/linux_gsg/linux_eal_parameters.html
I would suggest trying to get pktgen plus a simple DPDK sample application to run (l2fwd). If that works then move on to pktgen + ONVM. I can't think of any reason why ONVM would prevent this setup (although as I mentioned above, I don't think there is an easy way to have the pktgen packets to go ONVM without leaving the machine and coming back).
As a final note, if your goal is simply to generate packets and send them to OVNM you might consider the speed_tester example using the option to load a PCAP. We also have a load_generator sample which is more configurable, although I think it had some bugs (maybe we resolved these, I forget).
BuzzRage
Bug Report
Current Behavior Hi, I try to make PktGen works with OpenNetVM on the same machine. This machine has two NIC ports. I would like to generate packet with PktGen on one port, and then forward packets to a distant machine by passing through OpenNetVM and using the second NIC port. Here is dpdk-devbind output:
I'm trying different ways but nothing seems to work. I think I am misunderstanding something.
Expected behavior/code We expect to have a packet generator that sends data to OpenNetVM.
Steps to reproduce I followed the wiki here and I ran the manager with
./go.sh 0,1,2 3 0xF8 -s stdout -v, I set the correct MAC address in/tools/Pktgen/OpenNetVM-Scripts/pktgen-config.luaand I ran./run-pktgen.sh 1but it gives the following error:So I added
--proc-type=secondaryfor EAL arguments in this line of./run-pktgen.sh:(cd "$PKTGEN_HOME" && sudo "$PKTGEN_BUILD" -c 0xff -n 3 "$BLACK_LIST" --proc-type=secondary -- -p 0x1 "$PORT_MASK" -P -m "[1:2].0" -f "$PKTGEN_CONFIG")and it gaves me another error:I also tried to go directly with this command
sudo -E ./app/x86_64-native-linuxapp-gcc/pktgen -l 3-5 -n 1 --proc-type=secondary -- -P -m "[4:5].0"in pktgen-dpdk directory but I can't manage to having both PktGen and ONVM work.When I only run
./run-pktgen.sh 1without OpenNetVM's manager it gives me that:Environment
Possible Solution I know that it is possible to have multiple DPDK application on the same machine. So it might be possible to have PktGen and ONVM on the same machine. I think the problem come from a misunderstanding of EAL configuration (especially core mapping).