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crypto: chcr - Ensure Destination sg entry size less than 2k

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Allocate new sg list in case received destination sg list has entry
greater that 2k.

Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Harsh Jain
2017-06-15 12:43:46 +05:30
committed by Herbert Xu
parent 72cb471c13
commit 738bff4887
2 changed files with 142 additions and 17 deletions
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6
drivers/crypto/chelsio/chcr_crypto.h
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@@ -149,6 +149,7 @@
#define CHCR_HASH_MAX_BLOCK_SIZE_64 64
#define CHCR_HASH_MAX_BLOCK_SIZE_128 128
#define CHCR_SG_SIZE 2048
/* Aligned to 128 bit boundary */
@@ -164,6 +165,7 @@ 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;
@@ -287,6 +289,10 @@ 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__ */