[PATCH bpf-next] selftests/bpf: fix attach tests retcode checks

[PATCH bpf-next] selftests/bpf: fix attach tests retcode checks

[Artem Savkov]

Switching to libbpf 1.0 API broke test_sock and test_sysctl as they
check for return of bpf_prog_attach to be exactly -1. Switch the check
to '< 0' instead.

Fixes: b858ba8c52b6 ("selftests/bpf: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK")
Signed-off-by: Artem Savkov <asavkov@redhat.com>
---
 tools/testing/selftests/bpf/test_sock.c   | 2 +-
 tools/testing/selftests/bpf/test_sysctl.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c
index 6c4494076bbf..810c3740b2cc 100644
--- a/tools/testing/selftests/bpf/test_sock.c
+++ b/tools/testing/selftests/bpf/test_sock.c
@@ -492,7 +492,7 @@ static int run_test_case(int cgfd, const struct sock_test *test)
 			goto err;
 	}
 
-	if (attach_sock_prog(cgfd, progfd, test->attach_type) == -1) {
+	if (attach_sock_prog(cgfd, progfd, test->attach_type) < 0) {
 		if (test->result == ATTACH_REJECT)
 			goto out;
 		else
diff --git a/tools/testing/selftests/bpf/test_sysctl.c b/tools/testing/selftests/bpf/test_sysctl.c
index 5bae25ca19fb..57620e7c9048 100644
--- a/tools/testing/selftests/bpf/test_sysctl.c
+++ b/tools/testing/selftests/bpf/test_sysctl.c
@@ -1560,7 +1560,7 @@ static int run_test_case(int cgfd, struct sysctl_test *test)
 			goto err;
 	}
 
-	if (bpf_prog_attach(progfd, cgfd, atype, BPF_F_ALLOW_OVERRIDE) == -1) {
+	if (bpf_prog_attach(progfd, cgfd, atype, BPF_F_ALLOW_OVERRIDE) < 0) {
 		if (test->result == ATTACH_REJECT)
 			goto out;
 		else
-- 
2.35.1

Re: [PATCH bpf-next] selftests/bpf: fix attach tests retcode checks

[Yafang Shao]

On Thu, Apr 21, 2022 at 9:01 PM Artem Savkov <asavkov@redhat.com> wrote:
>
> Switching to libbpf 1.0 API broke test_sock and test_sysctl as they
> check for return of bpf_prog_attach to be exactly -1. Switch the check
> to '< 0' instead.
>
> Fixes: b858ba8c52b6 ("selftests/bpf: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK")
> Signed-off-by: Artem Savkov <asavkov@redhat.com>

Reviewed-by: Yafang Shao <laoar.shao@gmail.com>

> ---
>  tools/testing/selftests/bpf/test_sock.c   | 2 +-
>  tools/testing/selftests/bpf/test_sysctl.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c
> index 6c4494076bbf..810c3740b2cc 100644
> --- a/tools/testing/selftests/bpf/test_sock.c
> +++ b/tools/testing/selftests/bpf/test_sock.c
> @@ -492,7 +492,7 @@ static int run_test_case(int cgfd, const struct sock_test *test)
>                         goto err;
>         }
>
> -       if (attach_sock_prog(cgfd, progfd, test->attach_type) == -1) {
> +       if (attach_sock_prog(cgfd, progfd, test->attach_type) < 0) {
>                 if (test->result == ATTACH_REJECT)
>                         goto out;
>                 else
> diff --git a/tools/testing/selftests/bpf/test_sysctl.c b/tools/testing/selftests/bpf/test_sysctl.c
> index 5bae25ca19fb..57620e7c9048 100644
> --- a/tools/testing/selftests/bpf/test_sysctl.c
> +++ b/tools/testing/selftests/bpf/test_sysctl.c
> @@ -1560,7 +1560,7 @@ static int run_test_case(int cgfd, struct sysctl_test *test)
>                         goto err;
>         }
>
> -       if (bpf_prog_attach(progfd, cgfd, atype, BPF_F_ALLOW_OVERRIDE) == -1) {
> +       if (bpf_prog_attach(progfd, cgfd, atype, BPF_F_ALLOW_OVERRIDE) < 0) {
>                 if (test->result == ATTACH_REJECT)
>                         goto out;
>                 else
> --
> 2.35.1
>


-- 
Regards
Yafang

Re: [PATCH bpf-next] selftests/bpf: fix attach tests retcode checks

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Thu, 21 Apr 2022 15:01:04 +0200 you wrote:
> Switching to libbpf 1.0 API broke test_sock and test_sysctl as they
> check for return of bpf_prog_attach to be exactly -1. Switch the check
> to '< 0' instead.
> 
> Fixes: b858ba8c52b6 ("selftests/bpf: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK")
> Signed-off-by: Artem Savkov <asavkov@redhat.com>
> 
> [...]

Here is the summary with links:
  - [bpf-next] selftests/bpf: fix attach tests retcode checks
    https://git.kernel.org/bpf/bpf-next/c/920fd5e1771d

You are awesome, thank you!
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