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selftests/bpf: Better verification in test_tcpbpf

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Reduce amount of copy/paste for debug info when result is verified in
the test and keep that info together with values being checked so that
they won't get out of sync.

It also improves debug experience: instead of checking manually what
doesn't match in debug output for all fields, only unexpected field is
printed.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Andrey Ignatov 2018-07-11 17:33:36 -07:00 committed by Daniel Borkmann
parent c65267e5ff
commit 2044e4ef0b
1 changed files with 39 additions and 25 deletions
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64
tools/testing/selftests/bpf/test_tcpbpf_user.c
View File

@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
@ -15,6 +16,42 @@
#include "test_tcpbpf.h"
#define EXPECT_EQ(expected, actual, fmt) \
do { \
if ((expected) != (actual)) { \
printf(" Value of: " #actual "\n" \
" Actual: %" fmt "\n" \
" Expected: %" fmt "\n", \
(actual), (expected)); \
goto err; \
} \
} while (0)
int verify_result(const struct tcpbpf_globals *result)
{
__u32 expected_events;
expected_events = ((1 << BPF_SOCK_OPS_TIMEOUT_INIT) |
(1 << BPF_SOCK_OPS_RWND_INIT) |
(1 << BPF_SOCK_OPS_TCP_CONNECT_CB) |
(1 << BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB) |
(1 << BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB) |
(1 << BPF_SOCK_OPS_NEEDS_ECN) |
(1 << BPF_SOCK_OPS_STATE_CB));
EXPECT_EQ(expected_events, result->event_map, "#" PRIx32);
EXPECT_EQ(501ULL, result->bytes_received, "llu");
EXPECT_EQ(1002ULL, result->bytes_acked, "llu");
EXPECT_EQ(1, result->data_segs_in, PRIu32);
EXPECT_EQ(1, result->data_segs_out, PRIu32);
EXPECT_EQ(0x80, result->bad_cb_test_rv, PRIu32);
EXPECT_EQ(0, result->good_cb_test_rv, PRIu32);
return 0;
err:
return -1;
}
static int bpf_find_map(const char *test, struct bpf_object *obj,
const char *name)
{
@ -33,7 +70,6 @@ int main(int argc, char **argv)
const char *file = "test_tcpbpf_kern.o";
struct tcpbpf_globals g = {0};
const char *cg_path = "/foo";
bool debug_flag = false;
int error = EXIT_FAILURE;
struct bpf_object *obj;
int prog_fd, map_fd;
@ -41,9 +77,6 @@ int main(int argc, char **argv)
__u32 key = 0;
int rv;
if (argc > 1 && strcmp(argv[1], "-d") == 0)
debug_flag = true;
if (setup_cgroup_environment())
goto err;
@ -81,30 +114,11 @@ int main(int argc, char **argv)
goto err;
}
if (g.bytes_received != 501 || g.bytes_acked != 1002 ||
g.data_segs_in != 1 || g.data_segs_out != 1 ||
(g.event_map ^ 0x47e) != 0 || g.bad_cb_test_rv != 0x80 ||
g.good_cb_test_rv != 0) {
if (verify_result(&g)) {
printf("FAILED: Wrong stats\n");
if (debug_flag) {
printf("\n");
printf("bytes_received: %d (expecting 501)\n",
(int)g.bytes_received);
printf("bytes_acked: %d (expecting 1002)\n",
(int)g.bytes_acked);
printf("data_segs_in: %d (expecting 1)\n",
g.data_segs_in);
printf("data_segs_out: %d (expecting 1)\n",
g.data_segs_out);
printf("event_map: 0x%x (at least 0x47e)\n",
g.event_map);
printf("bad_cb_test_rv: 0x%x (expecting 0x80)\n",
g.bad_cb_test_rv);
printf("good_cb_test_rv:0x%x (expecting 0)\n",
g.good_cb_test_rv);
}
goto err;
}
printf("PASSED!\n");
error = 0;
err: