Question about ring_client.c

[sarsanaee]

Hey,

Looking at the tests/dpdk/ring_client.c. It seems that you are resuing the bpf examples available in examples/bpf like dapper in there. However, I don't see any usage of ubpf_vm in tests/dpdk/ring_client.c. I was expecting the VM to operate in there, right?

At the moment, there is no JITing or interpretation or anything in that file. Is this correct? If yes, would you please point me to some tests that actually run the vm? I'm wondering if that's something we should do at all or not!

Thanks, Alireza

[pchaigno]

It seems that you are resuing the bpf examples available in examples/bpf like dapper in there.

Yes, I reused some of the code from the example BPF programs. ring_client.c also reuses the code for the BPF maps.

However, I don't see any usage of ubpf_vm in tests/dpdk/ring_client.c. I was expecting the VM to operate in there, right?

No, the goal was to compare programs running on DPDK with their equivalent running on Oko (i.e., ubpf on top of Open vSwitch-DPDK). The programs running on DPDK reuse the code for the maps, but they are compiled from C to x86 directly, without using BPF bytecode.

At the moment, there is no JITing or interpretation or anything in that file. Is this correct? If yes, would you please point me to some tests that actually run the vm? I'm wondering if that's something we should do at all or not!

The example BPF programs at examples/bpf/ can be compiled and loaded in Oko as per https://github.com/Orange-OpenSource/oko#how-to-use. Is that what you are looking for?