Messages in this thread | | | From | Alexander Lobakin <> | Subject | [PATCH RFC kspp-next 0/3] compiler_types: add Endianness-dependent __counted_by_{le,be} | Date | Mon, 18 Mar 2024 14:03:51 +0100 |
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Some structures contain flexible arrays at the end and the counter for them, but the counter has explicit Endianness and thus __counted_by() can't be used directly.
To increase test coverage for potential problems without breaking anything, introduce __counted_by_{le,be} defined depending on platform's Endianness to either __counted_by() when applicable or noop otherwise. The first user will be virtchnl2.h from idpf just as example with 9 flex structures having Little Endian counters.
Maybe it would be a good idea to introduce such attributes on compiler level if possible, but for now let's stop on what we have.
Alexander Lobakin (3): compiler_types: add Endianness-dependent __counted_by_{le,be} idpf: make virtchnl2.h self-contained idpf: sprinkle __counted_by{,_le}() in the virtchnl2 header
include/linux/compiler_types.h | 11 ++++++++++ drivers/net/ethernet/intel/idpf/virtchnl2.h | 24 ++++++++++----------- 2 files changed, 23 insertions(+), 12 deletions(-)
-- 2.44.0
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