On Mon, Jul 24, 2023 at 09:14 PM -07, Yan Zhai wrote:
Tests BPF redirect at the lwt xmit hook to ensure error handling are safe, i.e. won't panic the kernel.
Suggested-by: Alexei Starovoitov alexei.starovoitov@gmail.com Signed-off-by: Yan Zhai yan@cloudflare.com
tools/testing/selftests/bpf/Makefile | 1 + .../selftests/bpf/progs/test_lwt_redirect.c | 67 +++++++ .../selftests/bpf/test_lwt_redirect.sh | 165 ++++++++++++++++++ 3 files changed, 233 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/test_lwt_redirect.c create mode 100755 tools/testing/selftests/bpf/test_lwt_redirect.sh
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 538df8fb8c42..e3a24d053793 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -66,6 +66,7 @@ TEST_PROGS := test_kmod.sh \ test_xdp_vlan_mode_generic.sh \ test_xdp_vlan_mode_native.sh \ test_lwt_ip_encap.sh \
- test_lwt_redirect.sh \ test_tcp_check_syncookie.sh \ test_tc_tunnel.sh \ test_tc_edt.sh \
diff --git a/tools/testing/selftests/bpf/progs/test_lwt_redirect.c b/tools/testing/selftests/bpf/progs/test_lwt_redirect.c new file mode 100644 index 000000000000..622c6b1e7128 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_lwt_redirect.c @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h>
+#define ETH_LEN 14
Nit: We have ETH_HLEN in bpf_tracing_net.h defined.
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