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Commit b7f17fe2 authored by Iuliana Prodan's avatar Iuliana Prodan Committed by Herbert Xu
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crypto: caam - refactor skcipher/aead/gcm/chachapoly {en,de}crypt functions 

Create a common crypt function for each skcipher/aead/gcm/chachapoly
algorithms and call it for encrypt/decrypt with the specific boolean -
true for encrypt and false for decrypt.
Signed-off-by: default avatarIuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: default avatarHoria Geanta <horia.geanta@nxp.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent e68303c6
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Inline Side-by-side
Showing with 53 additions and 215 deletions
drivers/crypto/caam/caamalg.c
View file @ b7f17fe2
......@@ -941,7 +941,7 @@ static void skcipher_unmap(struct device *dev, struct skcipher_edesc *edesc,
edesc->sec4_sg_dma, edesc->sec4_sg_bytes);
}
static void aead_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
static void aead_crypt_done(struct device *jrdev, u32 *desc, u32 err,
void *context)
{
struct aead_request *req = context;
......@@ -962,68 +962,7 @@ static void aead_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
aead_request_complete(req, ecode);
}
static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
void *context)
{
struct aead_request *req = context;
struct aead_edesc *edesc;
int ecode = 0;
dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
edesc = container_of(desc, struct aead_edesc, hw_desc[0]);
if (err)
ecode = caam_jr_strstatus(jrdev, err);
aead_unmap(jrdev, edesc, req);
kfree(edesc);
aead_request_complete(req, ecode);
}
static void skcipher_encrypt_done(struct device *jrdev, u32 *desc, u32 err,
void *context)
{
struct skcipher_request *req = context;
struct skcipher_edesc *edesc;
struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
int ivsize = crypto_skcipher_ivsize(skcipher);
int ecode = 0;
dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
edesc = container_of(desc, struct skcipher_edesc, hw_desc[0]);
if (err)
ecode = caam_jr_strstatus(jrdev, err);
skcipher_unmap(jrdev, edesc, req);
/*
* The crypto API expects us to set the IV (req->iv) to the last
* ciphertext block (CBC mode) or last counter (CTR mode).
* This is used e.g. by the CTS mode.
*/
if (ivsize && !ecode) {
memcpy(req->iv, (u8 *)edesc->sec4_sg + edesc->sec4_sg_bytes,
ivsize);
print_hex_dump_debug("dstiv @"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->iv,
edesc->src_nents > 1 ? 100 : ivsize, 1);
}
caam_dump_sg("dst @" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->dst,
edesc->dst_nents > 1 ? 100 : req->cryptlen, 1);
kfree(edesc);
skcipher_request_complete(req, ecode);
}
static void skcipher_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
static void skcipher_crypt_done(struct device *jrdev, u32 *desc, u32 err,
void *context)
{
struct skcipher_request *req = context;
......@@ -1436,41 +1375,7 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
return edesc;
}
static int gcm_encrypt(struct aead_request *req)
{
struct aead_edesc *edesc;
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct caam_ctx *ctx = crypto_aead_ctx(aead);
struct device *jrdev = ctx->jrdev;
bool all_contig;
u32 *desc;
int ret = 0;
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, GCM_DESC_JOB_IO_LEN, &all_contig, true);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
/* Create and submit job descriptor */
init_gcm_job(req, edesc, all_contig, true);
print_hex_dump_debug("aead jobdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1);
desc = edesc->hw_desc;
ret = caam_jr_enqueue(jrdev, desc, aead_encrypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
aead_unmap(jrdev, edesc, req);
kfree(edesc);
}
return ret;
}
static int chachapoly_encrypt(struct aead_request *req)
static inline int chachapoly_crypt(struct aead_request *req, bool encrypt)
{
struct aead_edesc *edesc;
struct crypto_aead *aead = crypto_aead_reqtfm(req);
......@@ -1481,18 +1386,18 @@ static int chachapoly_encrypt(struct aead_request *req)
int ret;
edesc = aead_edesc_alloc(req, CHACHAPOLY_DESC_JOB_IO_LEN, &all_contig,
true);
encrypt);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
desc = edesc->hw_desc;
init_chachapoly_job(req, edesc, all_contig, true);
init_chachapoly_job(req, edesc, all_contig, encrypt);
print_hex_dump_debug("chachapoly jobdesc@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
1);
ret = caam_jr_enqueue(jrdev, desc, aead_encrypt_done, req);
ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
......@@ -1503,45 +1408,17 @@ static int chachapoly_encrypt(struct aead_request *req)
return ret;
}
static int chachapoly_decrypt(struct aead_request *req)
static int chachapoly_encrypt(struct aead_request *req)
{
struct aead_edesc *edesc;
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct caam_ctx *ctx = crypto_aead_ctx(aead);
struct device *jrdev = ctx->jrdev;
bool all_contig;
u32 *desc;
int ret;
edesc = aead_edesc_alloc(req, CHACHAPOLY_DESC_JOB_IO_LEN, &all_contig,
false);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
desc = edesc->hw_desc;
init_chachapoly_job(req, edesc, all_contig, false);
print_hex_dump_debug("chachapoly jobdesc@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
1);
ret = caam_jr_enqueue(jrdev, desc, aead_decrypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
aead_unmap(jrdev, edesc, req);
kfree(edesc);
}
return ret;
return chachapoly_crypt(req, true);
}
static int ipsec_gcm_encrypt(struct aead_request *req)
static int chachapoly_decrypt(struct aead_request *req)
{
return crypto_ipsec_check_assoclen(req->assoclen) ? : gcm_encrypt(req);
return chachapoly_crypt(req, false);
}
static int aead_encrypt(struct aead_request *req)
static inline int aead_crypt(struct aead_request *req, bool encrypt)
{
struct aead_edesc *edesc;
struct crypto_aead *aead = crypto_aead_reqtfm(req);
......@@ -1553,19 +1430,19 @@ static int aead_encrypt(struct aead_request *req)
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, AUTHENC_DESC_JOB_IO_LEN,
&all_contig, true);
&all_contig, encrypt);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
/* Create and submit job descriptor */
init_authenc_job(req, edesc, all_contig, true);
init_authenc_job(req, edesc, all_contig, encrypt);
print_hex_dump_debug("aead jobdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1);
desc = edesc->hw_desc;
ret = caam_jr_enqueue(jrdev, desc, aead_encrypt_done, req);
ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
......@@ -1576,7 +1453,17 @@ static int aead_encrypt(struct aead_request *req)
return ret;
}
static int gcm_decrypt(struct aead_request *req)
static int aead_encrypt(struct aead_request *req)
{
return aead_crypt(req, true);
}
static int aead_decrypt(struct aead_request *req)
{
return aead_crypt(req, false);
}
static inline int gcm_crypt(struct aead_request *req, bool encrypt)
{
struct aead_edesc *edesc;
struct crypto_aead *aead = crypto_aead_reqtfm(req);
......@@ -1587,19 +1474,20 @@ static int gcm_decrypt(struct aead_request *req)
int ret = 0;
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, GCM_DESC_JOB_IO_LEN, &all_contig, false);
edesc = aead_edesc_alloc(req, GCM_DESC_JOB_IO_LEN, &all_contig,
encrypt);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
/* Create and submit job descriptor*/
init_gcm_job(req, edesc, all_contig, false);
/* Create and submit job descriptor */
init_gcm_job(req, edesc, all_contig, encrypt);
print_hex_dump_debug("aead jobdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1);
desc = edesc->hw_desc;
ret = caam_jr_enqueue(jrdev, desc, aead_decrypt_done, req);
ret = caam_jr_enqueue(jrdev, desc, aead_crypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
......@@ -1610,48 +1498,24 @@ static int gcm_decrypt(struct aead_request *req)
return ret;
}
static int ipsec_gcm_decrypt(struct aead_request *req)
static int gcm_encrypt(struct aead_request *req)
{
return crypto_ipsec_check_assoclen(req->assoclen) ? : gcm_decrypt(req);
return gcm_crypt(req, true);
}
static int aead_decrypt(struct aead_request *req)
static int gcm_decrypt(struct aead_request *req)
{
struct aead_edesc *edesc;
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct caam_ctx *ctx = crypto_aead_ctx(aead);
struct device *jrdev = ctx->jrdev;
bool all_contig;
u32 *desc;
int ret = 0;
caam_dump_sg("dec src@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, req->src,
req->assoclen + req->cryptlen, 1);
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, AUTHENC_DESC_JOB_IO_LEN,
&all_contig, false);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
/* Create and submit job descriptor*/
init_authenc_job(req, edesc, all_contig, false);
print_hex_dump_debug("aead jobdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1);
return gcm_crypt(req, false);
}
desc = edesc->hw_desc;
ret = caam_jr_enqueue(jrdev, desc, aead_decrypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
aead_unmap(jrdev, edesc, req);
kfree(edesc);
}
static int ipsec_gcm_encrypt(struct aead_request *req)
{
return crypto_ipsec_check_assoclen(req->assoclen) ? : gcm_encrypt(req);
}
return ret;
static int ipsec_gcm_decrypt(struct aead_request *req)
{
return crypto_ipsec_check_assoclen(req->assoclen) ? : gcm_decrypt(req);
}
/*
......@@ -1815,7 +1679,7 @@ static struct skcipher_edesc *skcipher_edesc_alloc(struct skcipher_request *req,
return edesc;
}
static int skcipher_encrypt(struct skcipher_request *req)
static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt)
{
struct skcipher_edesc *edesc;
struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
......@@ -1833,14 +1697,14 @@ static int skcipher_encrypt(struct skcipher_request *req)
return PTR_ERR(edesc);
/* Create and submit job descriptor*/
init_skcipher_job(req, edesc, true);
init_skcipher_job(req, edesc, encrypt);
print_hex_dump_debug("skcipher jobdesc@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1);
desc = edesc->hw_desc;
ret = caam_jr_enqueue(jrdev, desc, skcipher_encrypt_done, req);
ret = caam_jr_enqueue(jrdev, desc, skcipher_crypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
......@@ -1852,40 +1716,14 @@ static int skcipher_encrypt(struct skcipher_request *req)
return ret;
}
static int skcipher_decrypt(struct skcipher_request *req)
static int skcipher_encrypt(struct skcipher_request *req)
{
struct skcipher_edesc *edesc;
struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher);
struct device *jrdev = ctx->jrdev;
u32 *desc;
int ret = 0;
if (!req->cryptlen)
return 0;
/* allocate extended descriptor */
edesc = skcipher_edesc_alloc(req, DESC_JOB_IO_LEN * CAAM_CMD_SZ);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
/* Create and submit job descriptor*/
init_skcipher_job(req, edesc, false);
desc = edesc->hw_desc;
print_hex_dump_debug("skcipher jobdesc@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, edesc->hw_desc,
desc_bytes(edesc->hw_desc), 1);
ret = caam_jr_enqueue(jrdev, desc, skcipher_decrypt_done, req);
if (!ret) {
ret = -EINPROGRESS;
} else {
skcipher_unmap(jrdev, edesc, req);
kfree(edesc);
}
return skcipher_crypt(req, true);
}
return ret;
static int skcipher_decrypt(struct skcipher_request *req)
{
return skcipher_crypt(req, false);
}
static struct caam_skcipher_alg driver_algs[] = {
......
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