stm32_cryp_reqctx
crypto_skcipher_set_reqsize(tfm, sizeof(struct stm32_cryp_reqctx));
crypto_aead_set_reqsize(tfm, sizeof(struct stm32_cryp_reqctx));
struct stm32_cryp_reqctx *rctx = skcipher_request_ctx(req);
struct stm32_cryp_reqctx *rctx = aead_request_ctx(req);
struct stm32_cryp_reqctx *rctx;