diff options
author | Harsh Jain <harsh@chelsio.com> | 2018-05-24 17:26:38 +0530 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-05-31 00:13:48 +0800 |
commit | 335bcc4a2600f56ec3c28cf93dd9070df2576891 (patch) | |
tree | af5533dc3ba542ae35c51394429d72a9705dc6d7 | |
parent | 6faa0f572518fd7fa1946ac477975e5d8e2f6ead (diff) | |
download | linux-335bcc4a2600f56ec3c28cf93dd9070df2576891.tar.bz2 |
crypt: chelsio - Send IV as Immediate for cipher algo
Send IV in WR as immediate instead of dma mapped entry for cipher.
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r-- | drivers/crypto/chelsio/chcr_algo.c | 49 | ||||
-rw-r--r-- | drivers/crypto/chelsio/chcr_algo.h | 3 | ||||
-rw-r--r-- | drivers/crypto/chelsio/chcr_core.h | 2 | ||||
-rw-r--r-- | drivers/crypto/chelsio/chcr_crypto.h | 3 |
4 files changed, 17 insertions, 40 deletions
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index db15a9fafe0d..b2bfeb251e21 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -638,7 +638,6 @@ static int chcr_sg_ent_in_wr(struct scatterlist *src, src = sg_next(src); srcskip = 0; } - if (sg_dma_len(dst) == dstskip) { dst = sg_next(dst); dstskip = 0; @@ -761,13 +760,13 @@ static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam) nents = sg_nents_xlen(reqctx->dstsg, wrparam->bytes, CHCR_DST_SG_SIZE, reqctx->dst_ofst); - dst_size = get_space_for_phys_dsgl(nents + 1); + dst_size = get_space_for_phys_dsgl(nents); kctx_len = roundup(ablkctx->enckey_len, 16); transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, dst_size); nents = sg_nents_xlen(reqctx->srcsg, wrparam->bytes, CHCR_SRC_SG_SIZE, reqctx->src_ofst); - temp = reqctx->imm ? roundup(IV + wrparam->req->nbytes, 16) : - (sgl_len(nents + MIN_CIPHER_SG) * 8); + temp = reqctx->imm ? roundup(wrparam->bytes, 16) : + (sgl_len(nents) * 8); transhdr_len += temp; transhdr_len = roundup(transhdr_len, 16); skb = alloc_skb(SGE_MAX_WR_LEN, flags); @@ -789,7 +788,7 @@ static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam) ablkctx->ciph_mode, 0, 0, IV >> 1); chcr_req->sec_cpl.ivgen_hdrlen = FILL_SEC_CPL_IVGEN_HDRLEN(0, 0, 0, - 0, 0, dst_size); + 0, 1, dst_size); chcr_req->key_ctx.ctx_hdr = ablkctx->key_ctx_hdr; if ((reqctx->op == CHCR_DECRYPT_OP) && @@ -819,8 +818,8 @@ static struct sk_buff *create_cipher_wr(struct cipher_wr_param *wrparam) chcr_add_cipher_dst_ent(wrparam->req, phys_cpl, wrparam, wrparam->qid); atomic_inc(&adap->chcr_stats.cipher_rqst); - temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len - +(reqctx->imm ? (IV + wrparam->bytes) : 0); + temp = sizeof(struct cpl_rx_phys_dsgl) + dst_size + kctx_len + IV + + (reqctx->imm ? (wrparam->bytes) : 0); create_wreq(c_ctx(tfm), chcr_req, &(wrparam->req->base), reqctx->imm, 0, transhdr_len, temp, ablkctx->ciph_mode == CHCR_SCMD_CIPHER_MODE_AES_CBC); @@ -1023,7 +1022,7 @@ static int chcr_update_tweak(struct ablkcipher_request *req, u8 *iv, ret = crypto_cipher_setkey(cipher, key, keylen); if (ret) goto out; - /*H/W sends the encrypted IV in dsgl when AADIVDROP bit is 0*/ + crypto_cipher_encrypt_one(cipher, iv, iv); for (i = 0; i < round8; i++) gf128mul_x8_ble((le128 *)iv, (le128 *)iv); @@ -1115,7 +1114,7 @@ static int chcr_handle_cipher_resp(struct ablkcipher_request *req, } if (!reqctx->imm) { - bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 1, + bytes = chcr_sg_ent_in_wr(reqctx->srcsg, reqctx->dstsg, 0, CIP_SPACE_LEFT(ablkctx->enckey_len), reqctx->src_ofst, reqctx->dst_ofst); if ((bytes + reqctx->processed) >= req->nbytes) @@ -1126,11 +1125,7 @@ static int chcr_handle_cipher_resp(struct ablkcipher_request *req, /*CTR mode counter overfloa*/ bytes = req->nbytes - reqctx->processed; } - dma_sync_single_for_cpu(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, - reqctx->iv_dma, IV, DMA_BIDIRECTIONAL); err = chcr_update_cipher_iv(req, fw6_pld, reqctx->iv); - dma_sync_single_for_device(&ULD_CTX(c_ctx(tfm))->lldi.pdev->dev, - reqctx->iv_dma, IV, DMA_BIDIRECTIONAL); if (err) goto unmap; @@ -1205,7 +1200,6 @@ static int process_cipher(struct ablkcipher_request *req, dnents = sg_nents_xlen(req->dst, req->nbytes, CHCR_DST_SG_SIZE, 0); - dnents += 1; // IV phys_dsgl = get_space_for_phys_dsgl(dnents); kctx_len = roundup(ablkctx->enckey_len, 16); transhdr_len = CIPHER_TRANSHDR_SIZE(kctx_len, phys_dsgl); @@ -1218,8 +1212,7 @@ static int process_cipher(struct ablkcipher_request *req, } if (!reqctx->imm) { - bytes = chcr_sg_ent_in_wr(req->src, req->dst, - MIN_CIPHER_SG, + bytes = chcr_sg_ent_in_wr(req->src, req->dst, 0, CIP_SPACE_LEFT(ablkctx->enckey_len), 0, 0); if ((bytes + reqctx->processed) >= req->nbytes) @@ -2516,22 +2509,20 @@ void chcr_add_aead_dst_ent(struct aead_request *req, } void chcr_add_cipher_src_ent(struct ablkcipher_request *req, - struct ulptx_sgl *ulptx, + void *ulptx, struct cipher_wr_param *wrparam) { struct ulptx_walk ulp_walk; struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); + u8 *buf = ulptx; + memcpy(buf, reqctx->iv, IV); + buf += IV; if (reqctx->imm) { - u8 *buf = (u8 *)ulptx; - - memcpy(buf, reqctx->iv, IV); - buf += IV; sg_pcopy_to_buffer(req->src, sg_nents(req->src), buf, wrparam->bytes, reqctx->processed); } else { - ulptx_walk_init(&ulp_walk, ulptx); - ulptx_walk_add_page(&ulp_walk, IV, &reqctx->iv_dma); + ulptx_walk_init(&ulp_walk, (struct ulptx_sgl *)buf); ulptx_walk_add_sg(&ulp_walk, reqctx->srcsg, wrparam->bytes, reqctx->src_ofst); reqctx->srcsg = ulp_walk.last_sg; @@ -2549,7 +2540,6 @@ void chcr_add_cipher_dst_ent(struct ablkcipher_request *req, struct dsgl_walk dsgl_walk; dsgl_walk_init(&dsgl_walk, phys_cpl); - dsgl_walk_add_page(&dsgl_walk, IV, &reqctx->iv_dma); dsgl_walk_add_sg(&dsgl_walk, reqctx->dstsg, wrparam->bytes, reqctx->dst_ofst); reqctx->dstsg = dsgl_walk.last_sg; @@ -2623,12 +2613,6 @@ int chcr_cipher_dma_map(struct device *dev, struct ablkcipher_request *req) { int error; - struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); - - reqctx->iv_dma = dma_map_single(dev, reqctx->iv, IV, - DMA_BIDIRECTIONAL); - if (dma_mapping_error(dev, reqctx->iv_dma)) - return -ENOMEM; if (req->src == req->dst) { error = dma_map_sg(dev, req->src, sg_nents(req->src), @@ -2651,17 +2635,12 @@ int chcr_cipher_dma_map(struct device *dev, return 0; err: - dma_unmap_single(dev, reqctx->iv_dma, IV, DMA_BIDIRECTIONAL); return -ENOMEM; } void chcr_cipher_dma_unmap(struct device *dev, struct ablkcipher_request *req) { - struct chcr_blkcipher_req_ctx *reqctx = ablkcipher_request_ctx(req); - - dma_unmap_single(dev, reqctx->iv_dma, IV, - DMA_BIDIRECTIONAL); if (req->src == req->dst) { dma_unmap_sg(dev, req->src, sg_nents(req->src), DMA_BIDIRECTIONAL); diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h index dba3dff1e209..1871500309e2 100644 --- a/drivers/crypto/chelsio/chcr_algo.h +++ b/drivers/crypto/chelsio/chcr_algo.h @@ -146,7 +146,7 @@ kctx_len) #define CIPHER_TRANSHDR_SIZE(kctx_len, sge_pairs) \ (TRANSHDR_SIZE((kctx_len)) + (sge_pairs) +\ - sizeof(struct cpl_rx_phys_dsgl)) + sizeof(struct cpl_rx_phys_dsgl) + AES_BLOCK_SIZE) #define HASH_TRANSHDR_SIZE(kctx_len)\ (TRANSHDR_SIZE(kctx_len) + DUMMY_BYTES) @@ -259,7 +259,6 @@ ULP_TX_SC_MORE_V((immdatalen))) #define MAX_NK 8 #define MAX_DSGL_ENT 32 -#define MIN_CIPHER_SG 1 /* IV */ #define MIN_AUTH_SG 1 /* IV */ #define MIN_GCM_SG 1 /* IV */ #define MIN_DIGEST_SG 1 /*Partial Buffer*/ diff --git a/drivers/crypto/chelsio/chcr_core.h b/drivers/crypto/chelsio/chcr_core.h index 1a20424e18c6..de3a9c085daf 100644 --- a/drivers/crypto/chelsio/chcr_core.h +++ b/drivers/crypto/chelsio/chcr_core.h @@ -56,7 +56,7 @@ #define MAX_SALT 4 #define CIP_WR_MIN_LEN (sizeof(struct chcr_wr) + \ sizeof(struct cpl_rx_phys_dsgl) + \ - sizeof(struct ulptx_sgl)) + sizeof(struct ulptx_sgl) + 16) //IV #define HASH_WR_MIN_LEN (sizeof(struct chcr_wr) + \ DUMMY_BYTES + \ diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h index c8e8972af283..97878d46c287 100644 --- a/drivers/crypto/chelsio/chcr_crypto.h +++ b/drivers/crypto/chelsio/chcr_crypto.h @@ -295,7 +295,6 @@ struct chcr_blkcipher_req_ctx { unsigned int src_ofst; unsigned int dst_ofst; unsigned int op; - dma_addr_t iv_dma; u16 imm; u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; }; @@ -327,7 +326,7 @@ void chcr_add_aead_dst_ent(struct aead_request *req, void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx, unsigned int assoclen, unsigned short op_type); void chcr_add_cipher_src_ent(struct ablkcipher_request *req, - struct ulptx_sgl *ulptx, + void *ulptx, struct cipher_wr_param *wrparam); int chcr_cipher_dma_map(struct device *dev, struct ablkcipher_request *req); void chcr_cipher_dma_unmap(struct device *dev, struct ablkcipher_request *req); |