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crypto: qat - Use static_assert() to check struct sizes

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Commit 140e4c85d5 ("crypto: qat - Avoid -Wflex-array-member-not-at-end
warnings") introduced tagged `struct qat_alg_buf_list_hdr`. We want to
ensure that when new members need to be added to the flexible structure,
they are always included within this tagged struct.

So, we use `static_assert()` to ensure that the memory layout for
both the flexible structure and the tagged struct is the same after
any changes.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gustavo A. R. Silva 2024-08-08 16:05:26 -06:00 committed by Herbert Xu
parent 9369693a2c
commit 8caa061cfd
1 changed files with 2 additions and 0 deletions
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2
drivers/crypto/intel/qat/qat_common/qat_bl.h
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@ -23,6 +23,8 @@ struct qat_alg_buf_list {
);
struct qat_alg_buf buffers[];
} __packed;
static_assert(offsetof(struct qat_alg_buf_list, buffers) == sizeof(struct qat_alg_buf_list_hdr),
"struct member likely outside of __struct_group()");
struct qat_alg_fixed_buf_list {
struct qat_alg_buf_list_hdr sgl_hdr;