crypto: chelsio - Remove allocation of sg list to implement 2K limit of dsgl header

Update DMA address index instead of allocating new sg list to impose  2k size limit for each entry.
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/chelsio/chcr_algo.h

@@ -221,7 +221,7 @@
 #define MAX_WR_SIZE			512
 #define ROUND_16(bytes)		((bytes) & 0xFFFFFFF0)
 #define MAX_DSGL_ENT			32
-#define MAX_DIGEST_SKB_SGE	(MAX_SKB_FRAGS - 2)
+#define MAX_DIGEST_SKB_SGE	(MAX_SKB_FRAGS - 1)
 #define MIN_CIPHER_SG			1 /* IV */
 #define MIN_AUTH_SG			2 /*IV + AAD*/
 #define MIN_GCM_SG			2 /* IV + AAD*/
@@ -261,7 +261,6 @@ struct cipher_wr_param {
 	struct scatterlist *srcsg;
 	char *iv;
 	int bytes;
-	short int snent;
 	unsigned short qid;
 };
 enum {

drivers/crypto/chelsio/chcr_core.h

@@ -89,7 +89,7 @@ struct uld_ctx {
 	struct chcr_dev *dev;
 };
 
-struct uld_ctx * assign_chcr_device(void);
+struct uld_ctx *assign_chcr_device(void);
 int chcr_send_wr(struct sk_buff *skb);
 int start_crypto(void);
 int stop_crypto(void);

drivers/crypto/chelsio/chcr_crypto.h

@@ -166,7 +166,6 @@ struct ablk_ctx {
 struct chcr_aead_reqctx {
 	struct	sk_buff	*skb;
 	struct scatterlist *dst;
-	struct scatterlist *newdstsg;
 	struct scatterlist srcffwd[2];
 	struct scatterlist dstffwd[2];
 	short int dst_nents;
@@ -245,7 +244,6 @@ struct chcr_blkcipher_req_ctx {
 	struct scatterlist dstffwd[2];
 	struct scatterlist *dstsg;
 	struct scatterlist *dst;
-	struct scatterlist *newdstsg;
 	unsigned int processed;
 	unsigned int last_req_len;
 	unsigned int op;
@@ -291,10 +289,6 @@ static int chcr_aead_op(struct aead_request *req_base,
 			  int size,
 			  create_wr_t create_wr_fn);
 static inline int get_aead_subtype(struct crypto_aead *aead);
-static int is_newsg(struct scatterlist *sgl, unsigned int *newents);
-static struct scatterlist *alloc_new_sg(struct scatterlist *sgl,
-					unsigned int nents);
-static inline void free_new_sg(struct scatterlist *sgl);
 static int chcr_handle_cipher_resp(struct ablkcipher_request *req,
 				   unsigned char *input, int err);
 #endif /* __CHCR_CRYPTO_H__ */