[PATCH RFC kspp-next 0/3] compiler_types: add Endianness-dependent __counted_by_{le,be}
From: Alexander Lobakin
Date: Mon Mar 18 2024 - 09:04:28 EST
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(-)
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2.44.0