From 8caa061cfdf65bca9a3ceb4ce2b2b8e5fb98c1e8 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Thu, 8 Aug 2024 16:05:26 -0600 Subject: crypto: qat - Use static_assert() to check struct sizes Commit 140e4c85d540 ("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 Acked-by: Giovanni Cabiddu Signed-off-by: Herbert Xu --- drivers/crypto/intel/qat/qat_common/qat_bl.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/crypto') diff --git a/drivers/crypto/intel/qat/qat_common/qat_bl.h b/drivers/crypto/intel/qat/qat_common/qat_bl.h index 85bc32a9ec0e..3f5b79015400 100644 --- a/drivers/crypto/intel/qat/qat_common/qat_bl.h +++ b/drivers/crypto/intel/qat/qat_common/qat_bl.h @@ -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; -- cgit