diff options
| author | Harsh Jain <harsh@chelsio.com> | 2017-10-08 10:07:21 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-11-03 14:50:44 +0100 |
| commit | de1a00ac7da115ccafb4415364d484834638aa7f (patch) | |
| tree | c5c87974921a5c2cc05d868be57195b9e7c49913 /drivers/crypto | |
| parent | crypto: gf128mul - The x8_ble multiplication functions (diff) | |
| download | linux-de1a00ac7da115ccafb4415364d484834638aa7f.tar.xz linux-de1a00ac7da115ccafb4415364d484834638aa7f.zip | |
crypto: chelsio - Use x8_ble gf multiplication to calculate IV.
gf128mul_x8_ble() will reduce gf Multiplication iteration by 8.
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.c | 11 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_crypto.h | 1 |
2 files changed, 10 insertions, 2 deletions
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index 9c70266002d1..8c60fde07433 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -889,9 +889,11 @@ static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv) int ret, i; u8 *key; unsigned int keylen; + int round = reqctx->last_req_len / AES_BLOCK_SIZE; + int round8 = round / 8; cipher = ablkctx->aes_generic; - memcpy(iv, req->info, AES_BLOCK_SIZE); + memcpy(iv, reqctx->iv, AES_BLOCK_SIZE); keylen = ablkctx->enckey_len / 2; key = ablkctx->key + keylen; @@ -900,7 +902,10 @@ static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv) goto out; crypto_cipher_encrypt_one(cipher, iv, iv); - for (i = 0; i < (reqctx->processed / AES_BLOCK_SIZE); i++) + for (i = 0; i < round8; i++) + gf128mul_x8_ble((le128 *)iv, (le128 *)iv); + + for (i = 0; i < (round % 8); i++) gf128mul_x_ble((le128 *)iv, (le128 *)iv); crypto_cipher_decrypt_one(cipher, iv, iv); @@ -1041,6 +1046,7 @@ static int chcr_handle_cipher_resp(struct ablkcipher_request *req, CRYPTO_ALG_SUB_TYPE_CTR) bytes = adjust_ctr_overflow(reqctx->iv, bytes); reqctx->processed += bytes; + reqctx->last_req_len = bytes; wrparam.qid = u_ctx->lldi.rxq_ids[ctx->rx_qidx]; wrparam.req = req; wrparam.bytes = bytes; @@ -1133,6 +1139,7 @@ static int process_cipher(struct ablkcipher_request *req, goto error; } reqctx->processed = bytes; + reqctx->last_req_len = bytes; reqctx->dst = reqctx->dstsg; reqctx->op = op_type; wrparam.qid = qid; diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h index 30af1ee17b87..b3722b3cbd38 100644 --- a/drivers/crypto/chelsio/chcr_crypto.h +++ b/drivers/crypto/chelsio/chcr_crypto.h @@ -247,6 +247,7 @@ struct chcr_blkcipher_req_ctx { struct scatterlist *dst; struct scatterlist *newdstsg; unsigned int processed; + unsigned int last_req_len; unsigned int op; short int dst_nents; u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; |