linux-kernel - [bpf-next v3 04/12] selftests/bpf: Use bpf_prog_test_run

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Date:   Mon,  8 Jul 2019 18:31:13 +0200
From:   Krzesimir Nowak <krzesimir@...volk.io>
To:     linux-kernel@...r.kernel.org
Cc:     Alban Crequy <alban@...volk.io>,
        Iago López Galeiras <iago@...volk.io>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Stanislav Fomichev <sdf@...gle.com>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, xdp-newbies@...r.kernel.org,
        Krzesimir Nowak <krzesimir@...volk.io>
Subject: [bpf-next v3 04/12] selftests/bpf: Use bpf_prog_test_run_xattr

The bpf_prog_test_run_xattr function gives more options to set up a
test run of a BPF program than the bpf_prog_test_run function.

We will need this extra flexibility to pass ctx data later.

Signed-off-by: Krzesimir Nowak <krzesimir@...volk.io>
---
 tools/testing/selftests/bpf/test_verifier.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index c7541f572932..1640ba9f12c1 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -822,14 +822,20 @@ static int do_prog_test_run(int fd_prog, bool unpriv, uint32_t expected_val,
 {
 	__u8 tmp[TEST_DATA_LEN << 2];
 	__u32 size_tmp = sizeof(tmp);
-	uint32_t retval;
 	int saved_errno;
 	int err;
+	struct bpf_prog_test_run_attr attr = {
+		.prog_fd = fd_prog,
+		.repeat = 1,
+		.data_in = data,
+		.data_size_in = size_data,
+		.data_out = tmp,
+		.data_size_out = size_tmp,
+	};
 
 	if (unpriv)
 		set_admin(true);
-	err = bpf_prog_test_run(fd_prog, 1, data, size_data,
-				tmp, &size_tmp, &retval, NULL);
+	err = bpf_prog_test_run_xattr(&attr);
 	saved_errno = errno;
 	if (unpriv)
 		set_admin(false);
@@ -846,9 +852,9 @@ static int do_prog_test_run(int fd_prog, bool unpriv, uint32_t expected_val,
 			return err;
 		}
 	}
-	if (retval != expected_val &&
+	if (attr.retval != expected_val &&
 	    expected_val != POINTER_VALUE) {
-		printf("FAIL retval %d != %d ", retval, expected_val);
+		printf("FAIL retval %d != %d ", attr.retval, expected_val);
 		return 1;
 	}
 
-- 
2.20.1