crypto: iaa - Move compression CRC into request object

JIRA: https://issues.redhat.com/browse/RHEL-87766
Upstream Status: merged into herbert/crypto-2.6.git

Conflicts: missing 02c9742 ("crypto: iaa - Remove dst_null support")
  which is a part of a bigger patchset which was not backported. A result
  is small context differences.

commit 184e56e
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Mon Mar 24 11:57:32 2025 +0800

    crypto: iaa - Move compression CRC into request object

    Rather than passing around a CRC between the functions, embed it
    into the acomp_request context.

    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Vladis Dronov <vdronov@redhat.com>

Author: nefigtut

drivers/crypto/intel/iaa/iaa_crypto_main.c

@@ -1025,8 +1025,7 @@ static int iaa_remap_for_verify(struct device *dev, struct iaa_wq *iaa_wq,
 static int iaa_compress_verify(struct crypto_tfm *tfm, struct acomp_req *req,
 			       struct idxd_wq *wq,
 			       dma_addr_t src_addr, unsigned int slen,
-			       dma_addr_t dst_addr, unsigned int *dlen,
-			       u32 compression_crc);
+			       dma_addr_t dst_addr, unsigned int *dlen);
 
 static void iaa_desc_complete(struct idxd_desc *idxd_desc,
 			      enum idxd_complete_type comp_type,
@@ -1092,10 +1091,10 @@ static void iaa_desc_complete(struct idxd_desc *idxd_desc,
 	}
 
 	if (ctx->compress && compression_ctx->verify_compress) {
+		u32 *compression_crc = acomp_request_ctx(ctx->req);
 		dma_addr_t src_addr, dst_addr;
-		u32 compression_crc;
 
-		compression_crc = idxd_desc->iax_completion->crc;
+		*compression_crc = idxd_desc->iax_completion->crc;
 
 		ret = iaa_remap_for_verify(dev, iaa_wq, ctx->req, &src_addr, &dst_addr);
 		if (ret) {
@@ -1105,8 +1104,7 @@ static void iaa_desc_complete(struct idxd_desc *idxd_desc,
 		}
 
 		ret = iaa_compress_verify(ctx->tfm, ctx->req, iaa_wq->wq, src_addr,
-					  ctx->req->slen, dst_addr, &ctx->req->dlen,
-					  compression_crc);
+					  ctx->req->slen, dst_addr, &ctx->req->dlen);
 		if (ret) {
 			dev_dbg(dev, "%s: compress verify failed ret=%d\n", __func__, ret);
 			err = -EIO;
@@ -1136,11 +1134,11 @@ static int iaa_compress(struct crypto_tfm *tfm,	struct acomp_req *req,
 			struct idxd_wq *wq,
 			dma_addr_t src_addr, unsigned int slen,
 			dma_addr_t dst_addr, unsigned int *dlen,
-			u32 *compression_crc,
 			bool disable_async)
 {
 	struct iaa_device_compression_mode *active_compression_mode;
 	struct iaa_compression_ctx *ctx = crypto_tfm_ctx(tfm);
+	u32 *compression_crc = acomp_request_ctx(req);
 	struct iaa_device *iaa_device;
 	struct idxd_desc *idxd_desc;
 	struct iax_hw_desc *desc;
@@ -1288,11 +1286,11 @@ static int iaa_remap_for_verify(struct device *dev, struct iaa_wq *iaa_wq,
 static int iaa_compress_verify(struct crypto_tfm *tfm, struct acomp_req *req,
 			       struct idxd_wq *wq,
 			       dma_addr_t src_addr, unsigned int slen,
-			       dma_addr_t dst_addr, unsigned int *dlen,
-			       u32 compression_crc)
+			       dma_addr_t dst_addr, unsigned int *dlen)
 {
 	struct iaa_device_compression_mode *active_compression_mode;
 	struct iaa_compression_ctx *ctx = crypto_tfm_ctx(tfm);
+	u32 *compression_crc = acomp_request_ctx(req);
 	struct iaa_device *iaa_device;
 	struct idxd_desc *idxd_desc;
 	struct iax_hw_desc *desc;
@@ -1352,10 +1350,10 @@ static int iaa_compress_verify(struct crypto_tfm *tfm, struct acomp_req *req,
 		goto err;
 	}
 
-	if (compression_crc != idxd_desc->iax_completion->crc) {
+	if (*compression_crc != idxd_desc->iax_completion->crc) {
 		ret = -EINVAL;
 		dev_dbg(dev, "(verify) iaa comp/decomp crc mismatch:"
-			" comp=0x%x, decomp=0x%x\n", compression_crc,
+			" comp=0x%x, decomp=0x%x\n", *compression_crc,
 			idxd_desc->iax_completion->crc);
 		print_hex_dump(KERN_INFO, "cmp-rec: ", DUMP_PREFIX_OFFSET,
 			       8, 1, idxd_desc->iax_completion, 64, 0);
@@ -1503,7 +1501,6 @@ static int iaa_comp_acompress(struct acomp_req *req)
 	bool disable_async = false;
 	int nr_sgs, cpu, ret = 0;
 	struct iaa_wq *iaa_wq;
-	u32 compression_crc;
 	struct idxd_wq *wq;
 	struct device *dev;
 	int order = -1;
@@ -1580,7 +1577,7 @@ static int iaa_comp_acompress(struct acomp_req *req)
 		req->dst, req->dlen, sg_dma_len(req->dst));
 
 	ret = iaa_compress(tfm, req, wq, src_addr, req->slen, dst_addr,
-			   &req->dlen, &compression_crc, disable_async);
+			   &req->dlen, disable_async);
 	if (ret == -EINPROGRESS)
 		return ret;
 
@@ -1592,7 +1589,7 @@ static int iaa_comp_acompress(struct acomp_req *req)
 		}
 
 		ret = iaa_compress_verify(tfm, req, wq, src_addr, req->slen,
-					  dst_addr, &req->dlen, compression_crc);
+					  dst_addr, &req->dlen);
 		if (ret)
 			dev_dbg(dev, "asynchronous compress verification failed ret=%d\n", ret);
 
@@ -1823,6 +1820,7 @@ static struct acomp_alg iaa_acomp_fixed_deflate = {
 	.compress		= iaa_comp_acompress,
 	.decompress		= iaa_comp_adecompress,
 	.dst_free               = dst_free,
+	.reqsize		= sizeof(u32),
 	.base			= {
 		.cra_name		= "deflate",
 		.cra_driver_name	= "deflate-iaa",