On Mon, Jan 17, 2022 at 7:57 AM Pony Sew <poony20115@xxxxxxxxx> wrote: > > Hello. > It seems like before bpf_prog_test_run is called, you need to call > bpf_prog_load. But in BPF CO-RE program, we already have > <program>_bpf__open and <program>_bpf__load which basically does the > same thing. My code look approximately like this: > > -----test1_load.c--------------- > #include <cgreen/cgreen.h> > > Ensure(Load, load_test){ > /* should I call bpf_prog_load here? */ > bpf_prog_test_run(/* parameters */); > /* what about bpf_object__close? */ > } > > TestSuite *load_tests() { > TestSuite *suite = create_test_suite(); > return suite; > } > > -----bpf_firewall.bpf.c--------- > #include "vmlinux.h" > #include <bpf/bpf_helpers.h> > > SEC("xdp_prog") > int xdp_prog_main(struct xdp_md *ctx){ > /* main program */ > } > > char LICENSE[] SEC("license") = "GPL"; > > ------bpf_firewall.c--------------- > #include <cgreen/cgreen.h> > #include <bpf/libbpf.h> > #include <bpf/bpf.h> > #include "bpf_firewall.skel.h" > > TestSuite *load_tests(); > > int main(int argc, char **argv) { > struct bpf_firewall_bpf *obj; > int err = 0; > > obj = bpf_firewall_bpf__open(); > > err = bpf_firewall_bpf__load(obj); > > err = bpf_firewall_bpf__attach(obj); > > TestSuite *suite = create_test_suite(); > add_suite(suite, load_tests()); > run_test_suite(suite, create_text_reporter()); > > bpf_firewall_bpf__destroy(obj); > return 0; > } > > How do I implement bpf_prog_test_run with BPF CO-RE? It has nothing to do with BPF CO-RE. It's a BPF skeleton question. But regardless, bpf_prog_test_run() expects BPF program FD, which you can get with bpf_program__fd(skel->progs.xdp_prog_main) and pass the result to bpf_prog_test_run() call. > > Best regards, > Poony.