From: Alexei Starovoitov Date: Mon, 31 Jan 2022 22:05:22 +0000 (-0800) Subject: libbpf: Add support for bpf iter in light skeleton. X-Git-Tag: v5.18-rc1~136^2~392^2~42 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=42d1d53fedc9980e8fed98a5a03762cba7d2e9f6;p=linux-block.git libbpf: Add support for bpf iter in light skeleton. bpf iterator programs should use bpf_link_create to attach instead of bpf_raw_tracepoint_open like other tracing programs. Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20220131220528.98088-2-alexei.starovoitov@gmail.com --- diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c index 8f78c27d41f0..8eacfc79ec43 100644 --- a/tools/bpf/bpftool/gen.c +++ b/tools/bpf/bpftool/gen.c @@ -384,7 +384,10 @@ static void codegen_attach_detach(struct bpf_object *obj, const char *obj_name) printf("\tint fd = bpf_raw_tracepoint_open(\"%s\", prog_fd);\n", tp_name); break; case BPF_PROG_TYPE_TRACING: - printf("\tint fd = bpf_raw_tracepoint_open(NULL, prog_fd);\n"); + if (bpf_program__expected_attach_type(prog) == BPF_TRACE_ITER) + printf("\tint fd = bpf_link_create(prog_fd, 0, BPF_TRACE_ITER, NULL);\n"); + else + printf("\tint fd = bpf_raw_tracepoint_open(NULL, prog_fd);\n"); break; default: printf("\tint fd = ((void)prog_fd, 0); /* auto-attach not supported */\n");