i40iw: Replace the obsolete crypto hash interface with shash

This patch replaces the obsolete crypto hash interface with shash
and resolves a build failure after merge of the rdma tree
which is caused by the removal of crypto hash interface

Removing CRYPTO_ALG_ASYNC from crypto_alloc_shash(),
because it is by definition sync only

Signed-off-by: Mustafa Ismail <[e-mail]>
Signed-off-by: Tatyana Nikolova <[e-mail]>
Acked-by: Herbert Xu <[e-mail]>
Signed-off-by: Doug Ledford <[e-mail]>

drivers/infiniband/hw/i40iw/i40iw.h

···
 #include <rdma/iw_cm.h>
 #include <rdma/iw_portmap.h>
 #include <rdma/rdma_netlink.h>
+#include <crypto/hash.h>
 
 #include "i40iw_status.h"
 #include "i40iw_osdep.h"

drivers/infiniband/hw/i40iw/i40iw_osdep.h

···
 #include <linux/string.h>
 #include <linux/bitops.h>
 #include <net/tcp.h>
+#include <crypto/hash.h>
 /* get readq/writeq support for 32 bit kernels, use the low-first version */
 #include <linux/io-64-nonatomic-lo-hi.h>
 
···
 u8 __iomem *i40iw_get_hw_addr(void *dev);
 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp);
 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev);
-enum i40iw_status_code i40iw_ieq_check_mpacrc(struct hash_desc *desc, void *addr,
+enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc, void *addr,
 					      u32 length, u32 value);
 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev, struct i40iw_puda_buf *buf);
 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum);
-void i40iw_free_hash_desc(struct hash_desc *);
-enum i40iw_status_code i40iw_init_hash_desc(struct hash_desc *);
+void i40iw_free_hash_desc(struct shash_desc *);
+enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **);
 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
 						 struct i40iw_puda_buf *buf);
 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,

drivers/infiniband/hw/i40iw/i40iw_puda.c

···
 
 	switch (rsrc->completion) {
 	case PUDA_HASH_CRC_COMPLETE:
-		i40iw_free_hash_desc(&rsrc->hash_desc);
+		i40iw_free_hash_desc(rsrc->hash_desc);
 	case PUDA_QP_CREATED:
 		do {
 			if (reset)
···
 	crcptr = txbuf->data + fpdu_len - 4;
 	mpacrc = *(u32 *)crcptr;
 	if (ieq->check_crc) {
-		status = i40iw_ieq_check_mpacrc(&ieq->hash_desc, txbuf->data,
+		status = i40iw_ieq_check_mpacrc(ieq->hash_desc, txbuf->data,
 						(fpdu_len - 4), mpacrc);
 		if (status) {
 			i40iw_debug(ieq->dev, I40IW_DEBUG_IEQ,
···
 		crcptr = datap + fpdu_len - 4;
 		mpacrc = *(u32 *)crcptr;
 		if (ieq->check_crc)
-			ret = i40iw_ieq_check_mpacrc(&ieq->hash_desc,
+			ret = i40iw_ieq_check_mpacrc(ieq->hash_desc,
 						     datap, fpdu_len - 4, mpacrc);
 		if (ret) {
 			status = I40IW_ERR_MPA_CRC;

drivers/infiniband/hw/i40iw/i40iw_puda.h

···
 	u32 rxq_invalid_cnt;
 	u32 tx_wqe_avail_cnt;
 	bool check_crc;
-	struct hash_desc hash_desc;
+	struct shash_desc *hash_desc;
 	struct list_head txpend;
 	struct list_head bufpool;	/* free buffers pool list for recv and xmit */
 	u32 alloc_buf_count;
···
 				     struct i40iw_puda_buf *buf);
 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
 						 struct i40iw_puda_buf *buf);
-enum i40iw_status_code i40iw_ieq_check_mpacrc(struct hash_desc *desc,
+enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
 					      void *addr, u32 length, u32 value);
-enum i40iw_status_code i40iw_init_hash_desc(struct hash_desc *desc);
+enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc);
 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp);
-void i40iw_free_hash_desc(struct hash_desc *desc);
+void i40iw_free_hash_desc(struct shash_desc *desc);
 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length,
 				 u32 seqnum);
 #endif

drivers/infiniband/hw/i40iw/i40iw_utils.c

···
  * i40iw_init_hash_desc - initialize hash for crc calculation
  * @desc: cryption type
  */
-enum i40iw_status_code i40iw_init_hash_desc(struct hash_desc *desc)
+enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
 {
-	desc->tfm = crypto_alloc_hash("crc32c", 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(desc->tfm))
+	struct crypto_shash *tfm;
+	struct shash_desc *tdesc;
+
+	tfm = crypto_alloc_shash("crc32c", 0, 0);
+	if (IS_ERR(tfm))
 		return I40IW_ERR_MPA_CRC;
+
+	tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
+			GFP_KERNEL);
+	if (!tdesc) {
+		crypto_free_shash(tfm);
+		return I40IW_ERR_MPA_CRC;
+	}
+	tdesc->tfm = tfm;
+	*desc = tdesc;
+
 	return 0;
 }
 
···
  * i40iw_free_hash_desc - free hash desc
  * @desc: to be freed
  */
-void i40iw_free_hash_desc(struct hash_desc *desc)
+void i40iw_free_hash_desc(struct shash_desc *desc)
 {
-	crypto_free_hash(desc->tfm);
+	if (desc) {
+		crypto_free_shash(desc->tfm);
+		kfree(desc);
+	}
 }
 
 /**
···
  * @length: length of buffer
  * @value: value to be compared
  */
-enum i40iw_status_code i40iw_ieq_check_mpacrc(struct hash_desc *desc,
+enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
 					      void *addr,
 					      u32 length,
 					      u32 value)
 {
-	struct scatterlist sg;
 	u32 crc = 0;
 	int ret;
 	enum i40iw_status_code ret_code = 0;
 
-	crypto_hash_init(desc);
-	sg_init_one(&sg, addr, length);
-	ret = crypto_hash_update(desc, &sg, length);
+	crypto_shash_init(desc);
+	ret = crypto_shash_update(desc, addr, length);
 	if (!ret)
-		crypto_hash_final(desc, (u8 *)&crc);
+		crypto_shash_final(desc, (u8 *)&crc);
 	if (crc != value) {
 		i40iw_pr_err("mpa crc check fail\n");
 		ret_code = I40IW_ERR_MPA_CRC;