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Message-Id: <20241114-flow_dissector-v2-3-ee4a3be3de65@bootlin.com>
Date: Thu, 14 Nov 2024 22:50:34 +0100
From: Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
To: Andrii Nakryiko <andrii@...nel.org>,
Eduard Zingerman <eddyz87@...il.com>, Mykola Lysenko <mykolal@...com>,
Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>,
Martin KaFai Lau <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,
Yonghong Song <yonghong.song@...ux.dev>,
John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>,
Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>,
Jiri Olsa <jolsa@...nel.org>, Shuah Khan <shuah@...nel.org>,
"David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
Jesper Dangaard Brouer <hawk@...nel.org>
Cc: ebpf@...uxfoundation.org,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Bastien Curutchet <bastien.curutchet@...tlin.com>, bpf@...r.kernel.org,
linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org,
Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
Subject: [PATCH bpf-next v2 03/13] selftests/bpf: replace CHECK calls with
ASSERT macros in flow_dissector test
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@...ichev.me>
Signed-off-by: Alexis Lothoré (eBPF Foundation) <alexis.lothore@...tlin.com>
---
Changes in v2:
- fetch acked-by tag
---
.../selftests/bpf/prog_tests/flow_dissector.c | 41 +++++++++++-----------
1 file changed, 21 insertions(+), 20 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
index 3ea25ecdf3c92959f56ba0819130b453fd2379f7..6fbe8b6dad561aec02db552caea02517ac1e2109 100644
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
@@ -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);
--
2.47.0
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