bpf: iterators: Split iterators.lskel.h into little- and big- endian versions

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iterators.lskel.h is little-endian, therefore bpf iterator is currently
broken on big-endian systems. Introduce a big-endian version and add
instructions regarding its generation. Unfortunately bpftool's
cross-endianness capabilities are limited to BTF right now, so the
procedure requires access to a big-endian machine or a configured
emulator.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-25-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Ilya Leoshkevich 2023-01-28 01:06:43 +01:00 • committed by Alexei Starovoitov

parent 42fae973c2

commit 0f0e5f5bd5

6 changed files with 860 additions and 432 deletions

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6

kernel/bpf/preload/bpf_preload_kern.c

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12

kernel/bpf/preload/iterators/Makefile

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5

kernel/bpf/preload/iterators/README

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419

kernel/bpf/preload/iterators/iterators.lskel-big-endian.h

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0

kernel/bpf/preload/iterators/iterators.lskel.h → kernel/bpf/preload/iterators/iterators.lskel-little-endian.h

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