[PATCH bpf-next 0/4] bpf: A fix and a change to bpf_fib_lookup

Martin KaFai Lau
2023-02-17T00:42:03Z

This set fixes the bpf_fib_lookup such that it won't return
a NUD_FAILED neigh which may have invalid dmac. It also
adds a SKIP_NEIGH lookup flag to have bpf_fib_lookup skipping
the neigh lookup.

Please see individual patch for details.

Martin KaFai Lau (4):
bpf: Disable bh in bpf_test_run for xdp and tc prog
bpf: bpf_fib_lookup should not return neigh in NUD_FAILED state
bpf: Add BPF_FIB_LOOKUP_SKIP_NEIGH for bpf_fib_lookup
selftests/bpf: Add bpf_fib_lookup test

include/uapi/linux/bpf.h | 1 +
net/bpf/test_run.c | 2 +
net/core/filter.c | 37 ++--
tools/include/uapi/linux/bpf.h | 1 +
.../selftests/bpf/prog_tests/fib_lookup.c | 187 ++++++++++++++++++
.../testing/selftests/bpf/progs/fib_lookup.c | 22 +++
6 files changed, 238 insertions(+), 12 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/fib_lookup.c
create mode 100644 tools/testing/selftests/bpf/progs/fib_lookup.c

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2.30.2