[PATCH bpf-next] selftests/bpf: enable (uncomment) all tests in test_libbpf.sh

[Quentin Monnet <quentin.monnet@netronome.com>]

libbpf is now able to load successfully test_l4lb_noinline.o and
samples/bpf/tracex3_kern.o, so we can uncomment related tests from
test_libbpf.c and remove the associated "TODO"s.

It is also trivial to fix test_xdp_noinline.o so that it provides a
version and can be loaded. Fix it and uncomment this test as well.

For the record, the error message obtainted with tracex3_kern.o was
fixed by commit e3d91b0ca523 ("tools/libbpf: handle issues with bpf ELF
objects containing .eh_frames")

I have not been abled to reproduce the "libbpf: incorrect bpf_call
opcode" error for test_l4lb_noinline.o, even with the version of libbpf
present at the time when test_libbpf.sh and test_libbpf_open.c were
created.

Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
---
 tools/testing/selftests/bpf/test_libbpf.sh  | 12 +++---------
 tools/testing/selftests/bpf/test_xdp_meta.c |  2 ++
 2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_libbpf.sh b/tools/testing/selftests/bpf/test_libbpf.sh
index 156d89f1edcc..a426f28163a5 100755
--- a/tools/testing/selftests/bpf/test_libbpf.sh
+++ b/tools/testing/selftests/bpf/test_libbpf.sh
@@ -33,17 +33,11 @@ trap exit_handler 0 2 3 6 9
 
 libbpf_open_file test_l4lb.o
 
-# TODO: fix libbpf to load noinline functions
-# [warning] libbpf: incorrect bpf_call opcode
-#libbpf_open_file test_l4lb_noinline.o
+libbpf_open_file test_l4lb_noinline.o
 
-# TODO: fix test_xdp_meta.c to load with libbpf
-# [warning] libbpf: test_xdp_meta.o doesn't provide kernel version
-#libbpf_open_file test_xdp_meta.o
+libbpf_open_file test_xdp_meta.o
 
-# TODO: fix libbpf to handle .eh_frame
-# [warning] libbpf: relocation failed: no section(10)
-#libbpf_open_file ../../../../samples/bpf/tracex3_kern.o
+libbpf_open_file ../../../../samples/bpf/tracex3_kern.o
 
 # Success
 exit 0
diff --git a/tools/testing/selftests/bpf/test_xdp_meta.c b/tools/testing/selftests/bpf/test_xdp_meta.c
index 8d0182650653..2f42de66e2bb 100644
--- a/tools/testing/selftests/bpf/test_xdp_meta.c
+++ b/tools/testing/selftests/bpf/test_xdp_meta.c
@@ -8,6 +8,8 @@
 #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
 #define ctx_ptr(ctx, mem) (void *)(unsigned long)ctx->mem
 
+int _version SEC("version") = 1;
+
 SEC("t")
 int ing_cls(struct __sk_buff *ctx)
 {
-- 
2.7.4