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| author | Maciej Fijalkowski <maciej.fijalkowski@intel.com> | 2022-04-13 17:30:03 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-04-15 21:09:44 +0200 |
| commit | 2be4a677ccb2cae1f72a9467e922642655efc0be (patch) | |
| tree | 57d673506021ce55a96187733843f4c684cdcea8 /tools/testing/selftests/bpf/prog_tests/prog_tests_framework.c | |
| parent | xsk: Improve xdp_do_redirect() error codes (diff) | |
| download | linux-2be4a677ccb2cae1f72a9467e922642655efc0be.tar.gz linux-2be4a677ccb2cae1f72a9467e922642655efc0be.zip | |
xsk: Diversify return codes in xsk_rcv_check()
Inspired by patch that made xdp_do_redirect() return values for XSKMAP
more meaningful, return -ENXIO instead of -EINVAL for socket being
unbound in xsk_rcv_check() as this is the usual value that is returned
for such event. In turn, it is now possible to easily distinguish what
went wrong, which is a bit harder when for both cases checked, -EINVAL
was returned.
Return codes can be counted in a nice way via bpftrace oneliner that
Jesper has shown:
bpftrace -e 'tracepoint:xdp:xdp_redirect* {@err[-args->err] = count();}'
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/20220413153015.453864-3-maciej.fijalkowski@intel.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/prog_tests_framework.c')
0 files changed, 0 insertions, 0 deletions