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selftests/bpf: replace CHECK calls with ASSERT macros in flow_dissector test

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The flow dissector test currently relies on generic CHECK macros to
perform tests. Update those to newer, more-specific ASSERT macros.

This update allows to get rid of the global duration variable, which was
needed by the CHECK macros

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@bootlin.com>
Link: https://lore.kernel.org/r/20241120-flow_dissector-v3-3-45b46494f937@bootlin.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Alexis Lothoré (eBPF Foundation) 2024-11-20 08:43:13 +01:00 committed by Alexei Starovoitov
parent 3fed5d084f
commit 28494d6a27
1 changed files with 21 additions and 20 deletions
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41
tools/testing/selftests/bpf/prog_tests/flow_dissector.c
View File

@ -79,7 +79,6 @@ struct test {
#define VLAN_HLEN 4
static __u32 duration;
struct test tests[] = {
{
.name = "ipv4",
@ -511,7 +510,7 @@ static void run_tests_skb_less(int tap_fd, struct bpf_map *keys)
int i, err, keys_fd;
keys_fd = bpf_map__fd(keys);
if (CHECK(keys_fd < 0, "bpf_map__fd", "err %d\n", keys_fd))
if (!ASSERT_OK_FD(keys_fd, "bpf_map__fd"))
return;
for (i = 0; i < ARRAY_SIZE(tests); i++) {
@ -530,14 +529,16 @@ static void run_tests_skb_less(int tap_fd, struct bpf_map *keys)
continue;
err = tx_tap(tap_fd, &tests[i].pkt, sizeof(tests[i].pkt));
CHECK(err < 0, "tx_tap", "err %d errno %d\n", err, errno);
if (!ASSERT_EQ(err, sizeof(tests[i].pkt), "tx_tap"))
continue;
/* check the stored flow_keys only if BPF_OK expected */
if (tests[i].retval != BPF_OK)
continue;
err = bpf_map_lookup_elem(keys_fd, &key, &flow_keys);
ASSERT_OK(err, "bpf_map_lookup_elem");
if (!ASSERT_OK(err, "bpf_map_lookup_elem"))
continue;
ASSERT_MEMEQ(&flow_keys, &tests[i].keys,
sizeof(struct bpf_flow_keys),
@ -553,17 +554,17 @@ static void test_skb_less_prog_attach(struct bpf_flow *skel, int tap_fd)
int err, prog_fd;
prog_fd = bpf_program__fd(skel->progs._dissect);
if (CHECK(prog_fd < 0, "bpf_program__fd", "err %d\n", prog_fd))
if (!ASSERT_OK_FD(prog_fd, "bpf_program__fd"))
return;
err = bpf_prog_attach(prog_fd, 0, BPF_FLOW_DISSECTOR, 0);
if (CHECK(err, "bpf_prog_attach", "err %d errno %d\n", err, errno))
if (!ASSERT_OK(err, "bpf_prog_attach"))
return;
run_tests_skb_less(tap_fd, skel->maps.last_dissection);
err = bpf_prog_detach2(prog_fd, 0, BPF_FLOW_DISSECTOR);
CHECK(err, "bpf_prog_detach2", "err %d errno %d\n", err, errno);
ASSERT_OK(err, "bpf_prog_detach2");
}
static void test_skb_less_link_create(struct bpf_flow *skel, int tap_fd)
@ -572,7 +573,7 @@ static void test_skb_less_link_create(struct bpf_flow *skel, int tap_fd)
int err, net_fd;
net_fd = open("/proc/self/ns/net", O_RDONLY);
if (CHECK(net_fd < 0, "open(/proc/self/ns/net)", "err %d\n", errno))
if (!ASSERT_OK_FD(net_fd, "open(/proc/self/ns/net"))
return;
link = bpf_program__attach_netns(skel->progs._dissect, net_fd);
@ -582,7 +583,7 @@ static void test_skb_less_link_create(struct bpf_flow *skel, int tap_fd)
run_tests_skb_less(tap_fd, skel->maps.last_dissection);
err = bpf_link__destroy(link);
CHECK(err, "bpf_link__destroy", "err %d\n", err);
ASSERT_OK(err, "bpf_link__destroy");
out_close:
close(net_fd);
}
@ -593,18 +594,18 @@ void test_flow_dissector(void)
struct bpf_flow *skel;
skel = bpf_flow__open_and_load();
if (CHECK(!skel, "skel", "failed to open/load skeleton\n"))
if (!ASSERT_OK_PTR(skel, "open/load skeleton"))
return;
prog_fd = bpf_program__fd(skel->progs._dissect);
if (CHECK(prog_fd < 0, "bpf_program__fd", "err %d\n", prog_fd))
goto out_destroy_skel;
if (!ASSERT_OK_FD(prog_fd, "bpf_program__fd"))
return;
keys_fd = bpf_map__fd(skel->maps.last_dissection);
if (CHECK(keys_fd < 0, "bpf_map__fd", "err %d\n", keys_fd))
goto out_destroy_skel;
if (!ASSERT_OK_FD(keys_fd, "bpf_map__fd"))
return;
err = init_prog_array(skel->obj, skel->maps.jmp_table);
if (CHECK(err, "init_prog_array", "err %d\n", err))
goto out_destroy_skel;
if (!ASSERT_OK(err, "init_prog_array"))
return;
for (i = 0; i < ARRAY_SIZE(tests); i++) {
struct bpf_flow_keys flow_keys;
@ -634,17 +635,17 @@ void test_flow_dissector(void)
sizeof(struct bpf_flow_keys),
"returned flow keys");
}
/* Do the same tests but for skb-less flow dissector.
* We use a known path in the net/tun driver that calls
* eth_get_headlen and we manually export bpf_flow_keys
* via BPF map in this case.
*/
tap_fd = create_tap("tap0");
CHECK(tap_fd < 0, "create_tap", "tap_fd %d errno %d\n", tap_fd, errno);
if (!ASSERT_OK_FD(tap_fd, "create_tap"))
goto out_destroy_skel;
err = ifup("tap0");
CHECK(err, "ifup", "err %d errno %d\n", err, errno);
if (!ASSERT_OK(err, "ifup"))
goto out_destroy_skel;
/* Test direct prog attachment */
test_skb_less_prog_attach(skel, tap_fd);