libbpf: Change bpf_program__set_extra_flags to bpf_program__set_flags

bpf_program__set_extra_flags has just been introduced so we can still
change it without breaking users.

This new interface is a bit more flexible (for example if someone wants
to clear a flag).

Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211119180035.1396139-1-revest@chromium.org

tools/lib/bpf/libbpf.c

@@ -8315,12 +8315,12 @@ __u32 bpf_program__flags(const struct bpf_program *prog)
 	return prog->prog_flags;
 }
 
-int bpf_program__set_extra_flags(struct bpf_program *prog, __u32 extra_flags)
+int bpf_program__set_flags(struct bpf_program *prog, __u32 flags)
 {
 	if (prog->obj->loaded)
 		return libbpf_err(-EBUSY);
 
-	prog->prog_flags |= extra_flags;
+	prog->prog_flags = flags;
 	return 0;
 }
 

tools/lib/bpf/libbpf.h

@@ -498,7 +498,7 @@ bpf_program__set_expected_attach_type(struct bpf_program *prog,
 				      enum bpf_attach_type type);
 
 LIBBPF_API __u32 bpf_program__flags(const struct bpf_program *prog);
-LIBBPF_API int bpf_program__set_extra_flags(struct bpf_program *prog, __u32 extra_flags);
+LIBBPF_API int bpf_program__set_flags(struct bpf_program *prog, __u32 flags);
 
 LIBBPF_API int
 bpf_program__set_attach_target(struct bpf_program *prog, int attach_prog_fd,

tools/lib/bpf/libbpf.map

@@ -400,7 +400,7 @@ LIBBPF_0.6.0 {
 		bpf_program__flags;
 		bpf_program__insn_cnt;
 		bpf_program__insns;
-		bpf_program__set_extra_flags;
+		bpf_program__set_flags;
 		btf__add_btf;
 		btf__add_decl_tag;
 		btf__add_type_tag;

tools/testing/selftests/bpf/testing_helpers.c

@@ -91,6 +91,7 @@ int bpf_prog_test_load(const char *file, enum bpf_prog_type type,
 	struct bpf_object_load_attr attr = {};
 	struct bpf_object *obj;
 	struct bpf_program *prog;
+	__u32 flags;
 	int err;
 
 	obj = bpf_object__open(file);
@@ -106,7 +107,8 @@ int bpf_prog_test_load(const char *file, enum bpf_prog_type type,
 	if (type != BPF_PROG_TYPE_UNSPEC)
 		bpf_program__set_type(prog, type);
 
-	bpf_program__set_extra_flags(prog, BPF_F_TEST_RND_HI32);
+	flags = bpf_program__flags(prog) | BPF_F_TEST_RND_HI32;
+	bpf_program__set_flags(prog, flags);
 
 	attr.obj = obj;
 	attr.log_level = extra_prog_load_log_flags;