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| author | Liu Jian <liujian56@huawei.com> | 2022-04-16 13:58:01 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-04-21 00:48:34 +0300 |
| commit | 127e7dca427bc3e5d9a1c2071357e0f34be5c1d9 (patch) | |
| tree | d9bfb1a211f121ae30aa37d753370fa79a690570 /tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c | |
| parent | 92ece28072f18f30099770c5d4b8e300ea6820fa (diff) | |
| download | linux-127e7dca427bc3e5d9a1c2071357e0f34be5c1d9.tar.xz | |
selftests/bpf: Add test for skb_load_bytes
Use bpf_prog_test_run_opts to test the skb_load_bytes function. Tests
the behavior when offset is greater than INT_MAX or a normal value.
Signed-off-by: Liu Jian <liujian56@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20220416105801.88708-4-liujian56@huawei.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c b/tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c new file mode 100644 index 000000000000..d7f83c0a40a5 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/skb_load_bytes.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <test_progs.h> +#include <network_helpers.h> +#include "skb_load_bytes.skel.h" + +void test_skb_load_bytes(void) +{ + struct skb_load_bytes *skel; + int err, prog_fd, test_result; + struct __sk_buff skb = { 0 }; + + LIBBPF_OPTS(bpf_test_run_opts, tattr, + .data_in = &pkt_v4, + .data_size_in = sizeof(pkt_v4), + .ctx_in = &skb, + .ctx_size_in = sizeof(skb), + ); + + skel = skb_load_bytes__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open_and_load")) + return; + + prog_fd = bpf_program__fd(skel->progs.skb_process); + if (!ASSERT_GE(prog_fd, 0, "prog_fd")) + goto out; + + skel->bss->load_offset = (uint32_t)(-1); + err = bpf_prog_test_run_opts(prog_fd, &tattr); + if (!ASSERT_OK(err, "bpf_prog_test_run_opts")) + goto out; + test_result = skel->bss->test_result; + if (!ASSERT_EQ(test_result, -EFAULT, "offset -1")) + goto out; + + skel->bss->load_offset = (uint32_t)10; + err = bpf_prog_test_run_opts(prog_fd, &tattr); + if (!ASSERT_OK(err, "bpf_prog_test_run_opts")) + goto out; + test_result = skel->bss->test_result; + if (!ASSERT_EQ(test_result, 0, "offset 10")) + goto out; + +out: + skb_load_bytes__destroy(skel); +} |