crypto: chcr - Add ctr mode and process large sg entries for cipher
It send multiple WRs to H/W to handle large sg lists. Adds ctr(aes)
and rfc(ctr(aes)) modes.
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h
index 9894c7b..583008d 100644
--- a/drivers/crypto/chelsio/chcr_algo.h
+++ b/drivers/crypto/chelsio/chcr_algo.h
@@ -219,9 +219,26 @@
#define MAX_NK 8
#define CRYPTO_MAX_IMM_TX_PKT_LEN 256
#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 MIN_CIPHER_SG 1 /* IV */
#define MIN_AUTH_SG 2 /*IV + AAD*/
#define MIN_GCM_SG 2 /* IV + AAD*/
+#define MIN_DIGEST_SG 1 /*Partial Buffer*/
#define MIN_CCM_SG 3 /*IV+AAD+B0*/
+#define SPACE_LEFT(len) \
+ ((MAX_WR_SIZE - WR_MIN_LEN - (len)))
+
+unsigned int sgl_ent_len[] = {0, 0, 16, 24, 40,
+ 48, 64, 72, 88,
+ 96, 112, 120, 136,
+ 144, 160, 168, 184,
+ 192};
+unsigned int dsgl_ent_len[] = {0, 32, 32, 48, 48, 64, 64, 80, 80,
+ 112, 112, 128, 128, 144, 144, 160, 160,
+ 192, 192, 208, 208, 224, 224, 240, 240,
+ 272, 272, 288, 288, 304, 304, 320, 320};
struct algo_param {
unsigned int auth_mode;
@@ -239,6 +256,14 @@ struct hash_wr_param {
u64 scmd1;
};
+struct cipher_wr_param {
+ struct ablkcipher_request *req;
+ struct scatterlist *srcsg;
+ char *iv;
+ int bytes;
+ short int snent;
+ unsigned short qid;
+};
enum {
AES_KEYLENGTH_128BIT = 128,
AES_KEYLENGTH_192BIT = 192,
@@ -293,7 +318,6 @@ struct phys_sge_parm {
unsigned int nents;
unsigned int obsize;
unsigned short qid;
- unsigned char align;
};
struct crypto_result {