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crypto: ccree - don't mangle the request assoclen

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We were mangling the request struct assoclen field.
Fix it by keeping an internal version and working on it.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef 2019-04-18 16:38:59 +03:00 committed by Herbert Xu
parent c9877cbc83
commit da3cf67f1b
3 changed files with 37 additions and 26 deletions
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40
drivers/crypto/ccree/cc_aead.c
View File

@ -764,7 +764,7 @@ static void cc_set_assoc_desc(struct aead_request *areq, unsigned int flow_mode,
dev_dbg(dev, "ASSOC buffer type DLLI\n");
hw_desc_init(&desc[idx]);
set_din_type(&desc[idx], DMA_DLLI, sg_dma_address(areq->src),
areq->assoclen, NS_BIT);
areq_ctx->assoclen, NS_BIT);
set_flow_mode(&desc[idx], flow_mode);
if (ctx->auth_mode == DRV_HASH_XCBC_MAC &&
areq_ctx->cryptlen > 0)
@ -1113,9 +1113,11 @@ static void cc_proc_header_desc(struct aead_request *req,
struct cc_hw_desc desc[],
unsigned int *seq_size)
{
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
unsigned int idx = *seq_size;
/* Hash associated data */
if (req->assoclen > 0)
if (areq_ctx->assoclen > 0)
cc_set_assoc_desc(req, DIN_HASH, desc, &idx);
/* Hash IV */
@ -1343,7 +1345,7 @@ static int validate_data_size(struct cc_aead_ctx *ctx,
{
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
struct device *dev = drvdata_to_dev(ctx->drvdata);
unsigned int assoclen = req->assoclen;
unsigned int assoclen = areq_ctx->assoclen;
unsigned int cipherlen = (direct == DRV_CRYPTO_DIRECTION_DECRYPT) ?
(req->cryptlen - ctx->authsize) : req->cryptlen;
@ -1502,7 +1504,7 @@ static int cc_ccm(struct aead_request *req, struct cc_hw_desc desc[],
idx++;
/* process assoc data */
if (req->assoclen > 0) {
if (req_ctx->assoclen > 0) {
cc_set_assoc_desc(req, DIN_HASH, desc, &idx);
} else {
hw_desc_init(&desc[idx]);
@ -1594,7 +1596,7 @@ static int config_ccm_adata(struct aead_request *req)
* NIST Special Publication 800-38C
*/
*b0 |= (8 * ((m - 2) / 2));
if (req->assoclen > 0)
if (req_ctx->assoclen > 0)
*b0 |= 64; /* Enable bit 6 if Adata exists. */
rc = set_msg_len(b0 + 16 - l, cryptlen, l); /* Write L'. */
@ -1605,7 +1607,7 @@ static int config_ccm_adata(struct aead_request *req)
/* END of "taken from crypto/ccm.c" */
/* l(a) - size of associated data. */
req_ctx->ccm_hdr_size = format_ccm_a0(a0, req->assoclen);
req_ctx->ccm_hdr_size = format_ccm_a0(a0, req_ctx->assoclen);
memset(req->iv + 15 - req->iv[0], 0, req->iv[0] + 1);
req->iv[15] = 1;
@ -1637,7 +1639,7 @@ static void cc_proc_rfc4309_ccm(struct aead_request *req)
memcpy(areq_ctx->ctr_iv + CCM_BLOCK_IV_OFFSET, req->iv,
CCM_BLOCK_IV_SIZE);
req->iv = areq_ctx->ctr_iv;
req->assoclen -= CCM_BLOCK_IV_SIZE;
areq_ctx->assoclen -= CCM_BLOCK_IV_SIZE;
}
static void cc_set_ghash_desc(struct aead_request *req,
@ -1845,7 +1847,7 @@ static int cc_gcm(struct aead_request *req, struct cc_hw_desc desc[],
// for gcm and rfc4106.
cc_set_ghash_desc(req, desc, seq_size);
/* process(ghash) assoc data */
if (req->assoclen > 0)
if (req_ctx->assoclen > 0)
cc_set_assoc_desc(req, DIN_HASH, desc, seq_size);
cc_set_gctr_desc(req, desc, seq_size);
/* process(gctr+ghash) */
@ -1869,8 +1871,8 @@ static int config_gcm_context(struct aead_request *req)
(req->cryptlen - ctx->authsize);
__be32 counter = cpu_to_be32(2);
dev_dbg(dev, "%s() cryptlen = %d, req->assoclen = %d ctx->authsize = %d\n",
__func__, cryptlen, req->assoclen, ctx->authsize);
dev_dbg(dev, "%s() cryptlen = %d, req_ctx->assoclen = %d ctx->authsize = %d\n",
__func__, cryptlen, req_ctx->assoclen, ctx->authsize);
memset(req_ctx->hkey, 0, AES_BLOCK_SIZE);
@ -1886,7 +1888,7 @@ static int config_gcm_context(struct aead_request *req)
if (!req_ctx->plaintext_authenticate_only) {
__be64 temp64;
temp64 = cpu_to_be64(req->assoclen * 8);
temp64 = cpu_to_be64(req_ctx->assoclen * 8);
memcpy(&req_ctx->gcm_len_block.len_a, &temp64, sizeof(temp64));
temp64 = cpu_to_be64(cryptlen * 8);
memcpy(&req_ctx->gcm_len_block.len_c, &temp64, 8);
@ -1896,8 +1898,8 @@ static int config_gcm_context(struct aead_request *req)
*/
__be64 temp64;
temp64 = cpu_to_be64((req->assoclen + GCM_BLOCK_RFC4_IV_SIZE +
cryptlen) * 8);
temp64 = cpu_to_be64((req_ctx->assoclen +
GCM_BLOCK_RFC4_IV_SIZE + cryptlen) * 8);
memcpy(&req_ctx->gcm_len_block.len_a, &temp64, sizeof(temp64));
temp64 = 0;
memcpy(&req_ctx->gcm_len_block.len_c, &temp64, 8);
@ -1917,7 +1919,7 @@ static void cc_proc_rfc4_gcm(struct aead_request *req)
memcpy(areq_ctx->ctr_iv + GCM_BLOCK_RFC4_IV_OFFSET, req->iv,
GCM_BLOCK_RFC4_IV_SIZE);
req->iv = areq_ctx->ctr_iv;
req->assoclen -= GCM_BLOCK_RFC4_IV_SIZE;
areq_ctx->assoclen -= GCM_BLOCK_RFC4_IV_SIZE;
}
static int cc_proc_aead(struct aead_request *req,
@ -1942,7 +1944,7 @@ static int cc_proc_aead(struct aead_request *req,
/* Check data length according to mode */
if (validate_data_size(ctx, direct, req)) {
dev_err(dev, "Unsupported crypt/assoc len %d/%d.\n",
req->cryptlen, req->assoclen);
req->cryptlen, areq_ctx->assoclen);
crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_BLOCK_LEN);
return -EINVAL;
}
@ -2095,6 +2097,7 @@ static int cc_aead_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = false;
@ -2126,6 +2129,7 @@ static int cc_rfc4309_ccm_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = true;
@ -2147,6 +2151,7 @@ static int cc_aead_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = false;
@ -2176,6 +2181,7 @@ static int cc_rfc4309_ccm_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
areq_ctx->is_gcm4543 = true;
@ -2295,6 +2301,7 @@ static int cc_rfc4106_gcm_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
areq_ctx->plaintext_authenticate_only = false;
@ -2323,6 +2330,7 @@ static int cc_rfc4543_gcm_encrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
cc_proc_rfc4_gcm(req);
@ -2354,6 +2362,7 @@ static int cc_rfc4106_gcm_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
areq_ctx->plaintext_authenticate_only = false;
@ -2382,6 +2391,7 @@ static int cc_rfc4543_gcm_decrypt(struct aead_request *req)
/* No generated IV required */
areq_ctx->backup_iv = req->iv;
areq_ctx->assoclen = req->assoclen;
areq_ctx->backup_giv = NULL;
cc_proc_rfc4_gcm(req);

1
drivers/crypto/ccree/cc_aead.h
View File

@ -67,6 +67,7 @@ struct aead_req_ctx {
u8 backup_mac[MAX_MAC_SIZE];
u8 *backup_iv; /*store iv for generated IV flow*/
u8 *backup_giv; /*store iv for rfc3686(ctr) flow*/
u32 assoclen; /* internal assoclen */
dma_addr_t mac_buf_dma_addr; /* internal ICV DMA buffer */
/* buffer for internal ccm configurations */
dma_addr_t ccm_iv0_dma_addr;

22
drivers/crypto/ccree/cc_buffer_mgr.c
View File

@ -65,7 +65,7 @@ static void cc_copy_mac(struct device *dev, struct aead_request *req,
{
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
u32 skip = req->assoclen + req->cryptlen;
u32 skip = areq_ctx->assoclen + req->cryptlen;
if (areq_ctx->is_gcm4543)
skip += crypto_aead_ivsize(tfm);
@ -575,8 +575,8 @@ void cc_unmap_aead_request(struct device *dev, struct aead_request *req)
dev_dbg(dev, "Unmapping src sgl: req->src=%pK areq_ctx->src.nents=%u areq_ctx->assoc.nents=%u assoclen:%u cryptlen=%u\n",
sg_virt(req->src), areq_ctx->src.nents, areq_ctx->assoc.nents,
req->assoclen, req->cryptlen);
size_to_unmap = req->assoclen + req->cryptlen;
areq_ctx->assoclen, req->cryptlen);
size_to_unmap = areq_ctx->assoclen + req->cryptlen;
if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT)
size_to_unmap += areq_ctx->req_authsize;
if (areq_ctx->is_gcm4543)
@ -663,7 +663,7 @@ static int cc_aead_chain_assoc(struct cc_drvdata *drvdata,
struct scatterlist *current_sg = req->src;
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
unsigned int sg_index = 0;
u32 size_of_assoc = req->assoclen;
u32 size_of_assoc = areq_ctx->assoclen;
struct device *dev = drvdata_to_dev(drvdata);
if (areq_ctx->is_gcm4543)
@ -674,7 +674,7 @@ static int cc_aead_chain_assoc(struct cc_drvdata *drvdata,
goto chain_assoc_exit;
}
if (req->assoclen == 0) {
if (areq_ctx->assoclen == 0) {
areq_ctx->assoc_buff_type = CC_DMA_BUF_NULL;
areq_ctx->assoc.nents = 0;
areq_ctx->assoc.mlli_nents = 0;
@ -734,7 +734,7 @@ static int cc_aead_chain_assoc(struct cc_drvdata *drvdata,
cc_dma_buf_type(areq_ctx->assoc_buff_type),
areq_ctx->assoc.nents);
cc_add_sg_entry(dev, sg_data, areq_ctx->assoc.nents, req->src,
req->assoclen, 0, is_last,
areq_ctx->assoclen, 0, is_last,
&areq_ctx->assoc.mlli_nents);
areq_ctx->assoc_buff_type = CC_DMA_BUF_MLLI;
}
@ -893,11 +893,11 @@ static int cc_aead_chain_data(struct cc_drvdata *drvdata,
u32 src_mapped_nents = 0, dst_mapped_nents = 0;
u32 offset = 0;
/* non-inplace mode */
unsigned int size_for_map = req->assoclen + req->cryptlen;
unsigned int size_for_map = areq_ctx->assoclen + req->cryptlen;
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
u32 sg_index = 0;
bool is_gcm4543 = areq_ctx->is_gcm4543;
u32 size_to_skip = req->assoclen;
u32 size_to_skip = areq_ctx->assoclen;
if (is_gcm4543)
size_to_skip += crypto_aead_ivsize(tfm);
@ -941,7 +941,7 @@ static int cc_aead_chain_data(struct cc_drvdata *drvdata,
areq_ctx->src_offset = offset;
if (req->src != req->dst) {
size_for_map = req->assoclen + req->cryptlen;
size_for_map = areq_ctx->assoclen + req->cryptlen;
size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
authsize : 0;
if (is_gcm4543)
@ -1107,7 +1107,7 @@ int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req)
areq_ctx->ccm_iv0_dma_addr = dma_addr;
rc = cc_set_aead_conf_buf(dev, areq_ctx, areq_ctx->ccm_config,
&sg_data, req->assoclen);
&sg_data, areq_ctx->assoclen);
if (rc)
goto aead_map_failure;
}
@ -1158,7 +1158,7 @@ int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req)
areq_ctx->gcm_iv_inc2_dma_addr = dma_addr;
}
size_to_map = req->cryptlen + req->assoclen;
size_to_map = req->cryptlen + areq_ctx->assoclen;
if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT)
size_to_map += authsize;