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| author | Jakub Sitnicki <jakub@cloudflare.com> | 2025-08-14 11:59:32 +0200 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2025-08-18 10:29:42 -0700 |
| commit | 153f6bfd489076309227413e9221960712336369 (patch) | |
| tree | 3cc4c3d6e42580a8611ed60185e3566607c583d1 /tools/testing/selftests/bpf/prog_tests | |
| parent | selftests/bpf: Parametrize test_xdp_context_tuntap (diff) | |
| download | linux-153f6bfd489076309227413e9221960712336369.tar.gz linux-153f6bfd489076309227413e9221960712336369.zip | |
selftests/bpf: Cover read access to skb metadata via dynptr
Exercise reading from SKB metadata area in two new ways:
1. indirectly, with bpf_dynptr_read(), and
2. directly, with bpf_dynptr_slice().
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Jesse Brandeburg <jbrandeburg@cloudflare.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20250814-skb-metadata-thru-dynptr-v7-6-8a39e636e0fb@cloudflare.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c index 6c66e27e5bc7..7e4526461a4c 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c @@ -171,6 +171,18 @@ static void assert_test_result(const struct bpf_map *result_map) "test_result map contains test payload"); } +static bool clear_test_result(struct bpf_map *result_map) +{ + const __u8 v[sizeof(test_payload)] = {}; + const __u32 k = 0; + int err; + + err = bpf_map__update_elem(result_map, &k, sizeof(k), v, sizeof(v), BPF_ANY); + ASSERT_OK(err, "update test_result"); + + return err == 0; +} + void test_xdp_context_veth(void) { LIBBPF_OPTS(bpf_tc_hook, tc_hook, .attach_point = BPF_TC_INGRESS); @@ -268,6 +280,9 @@ static void test_tuntap(struct bpf_program *xdp_prog, int tap_ifindex; int ret; + if (!clear_test_result(result_map)) + return; + ns = netns_new(TAP_NETNS, true); if (!ASSERT_OK_PTR(ns, "create and open ns")) return; @@ -328,6 +343,12 @@ void test_xdp_context_tuntap(void) if (test__start_subtest("data_meta")) test_tuntap(skel->progs.ing_xdp, skel->progs.ing_cls, skel->maps.test_result); + if (test__start_subtest("dynptr_read")) + test_tuntap(skel->progs.ing_xdp, skel->progs.ing_cls_dynptr_read, + skel->maps.test_result); + if (test__start_subtest("dynptr_slice")) + test_tuntap(skel->progs.ing_xdp, skel->progs.ing_cls_dynptr_slice, + skel->maps.test_result); test_xdp_meta__destroy(skel); } |