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@xxxxxxxxx> > Signed-off-by: Yan Zhai <yan@xxxxxxxxxxxxxx> > --- > 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. [...]
