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

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Date:   Thu, 16 Feb 2023 16:41:46 -0800
From:   Martin KaFai Lau <martin.lau@...ux.dev>
To:     bpf@...r.kernel.org
Cc:     'Alexei Starovoitov ' <ast@...nel.org>,
        'Andrii Nakryiko ' <andrii@...nel.org>,
        'Daniel Borkmann ' <daniel@...earbox.net>,
        netdev@...r.kernel.org, kernel-team@...a.com
Subject: [PATCH bpf-next 0/4] bpf: A fix and a change to bpf_fib_lookup

From: Martin KaFai Lau <martin.lau@...nel.org>

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