diff options
| author | Feng Yang <yangfeng@kylinos.cn> | 2026-03-04 12:44:29 +0300 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2026-03-05 03:44:29 +0300 |
| commit | e8ae16d65ac629bcdebf685b9ad9b008648b08b0 (patch) | |
| tree | 895b34a2a47129455a60cc1a10a3ca6a14b3049b | |
| parent | 972787479ee73006fddb5e59ab5c8e733810ff42 (diff) | |
| download | linux-e8ae16d65ac629bcdebf685b9ad9b008648b08b0.tar.xz | |
selftests/bpf: Add selftests for the invocation of bpf_lwt_xmit_push_encap
Calling bpf_lwt_xmit_push_encap will not cause a crash when dst is missing.
Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260304094429.168521-3-yangfeng59949@163.com
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/lwt_misc.c | 9 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/lwt_misc.c | 22 |
2 files changed, 31 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/lwt_misc.c b/tools/testing/selftests/bpf/prog_tests/lwt_misc.c new file mode 100644 index 000000000000..6940fca38512 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/lwt_misc.c @@ -0,0 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <test_progs.h> +#include "lwt_misc.skel.h" + +void test_lwt_misc(void) +{ + RUN_TESTS(lwt_misc); +} diff --git a/tools/testing/selftests/bpf/progs/lwt_misc.c b/tools/testing/selftests/bpf/progs/lwt_misc.c new file mode 100644 index 000000000000..b392317088d2 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/lwt_misc.c @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include "vmlinux.h" +#include <bpf/bpf_helpers.h> +#include "bpf_misc.h" + +SEC("lwt_xmit") +__success __retval(0) +int test_missing_dst(struct __sk_buff *skb) +{ + struct iphdr iph; + + __builtin_memset(&iph, 0, sizeof(struct iphdr)); + iph.ihl = 5; + iph.version = 4; + + bpf_lwt_push_encap(skb, BPF_LWT_ENCAP_IP, &iph, sizeof(struct iphdr)); + + return 0; +} + +char _license[] SEC("license") = "GPL"; |