Commit 8caa061c authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Herbert Xu
Browse files

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



Commit 140e4c85 ("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: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: default avatarGiovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 9369693a

drivers/crypto/intel/qat/qat_common/qat_bl.h

+2 −0
Original line number Diff line number Diff line
@@ -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;