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crypto: talitos - scaffolding for new algorithm types

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This patch is preparation for adding new algorithm types.

Some elements which are AEAD specific were renamed.
The algorithm template structure was changed to
use crypto_alg, and talitos_alg_alloc was made
more general with respect to algorithm types.
ipsec_esp_edesc is renamed to talitos_edesc
to use it in the upcoming ablkcipher routines.

Signed-off-by: Lee Nipper <lee.nipper@gmail.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Lee Nipper 2009-03-29 15:50:50 +08:00 committed by Herbert Xu
parent 9f171adc19
commit 56af8cd44b
1 changed files with 129 additions and 116 deletions
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245
drivers/crypto/talitos.c
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@ -684,8 +684,8 @@ struct talitos_ctx {
unsigned int authsize;
};
static int aead_authenc_setauthsize(struct crypto_aead *authenc,
unsigned int authsize)
static int aead_setauthsize(struct crypto_aead *authenc,
unsigned int authsize)
{
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
@ -694,8 +694,8 @@ static int aead_authenc_setauthsize(struct crypto_aead *authenc,
return 0;
}
static int aead_authenc_setkey(struct crypto_aead *authenc,
const u8 *key, unsigned int keylen)
static int aead_setkey(struct crypto_aead *authenc,
const u8 *key, unsigned int keylen)
{
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct rtattr *rta = (void *)key;
@ -740,7 +740,7 @@ badkey:
}
/*
* ipsec_esp_edesc - s/w-extended ipsec_esp descriptor
* talitos_edesc - s/w-extended descriptor
* @src_nents: number of segments in input scatterlist
* @dst_nents: number of segments in output scatterlist
* @dma_len: length of dma mapped link_tbl space
@ -752,7 +752,7 @@ badkey:
* is greater than 1, an integrity check value is concatenated to the end
* of link_tbl data
*/
struct ipsec_esp_edesc {
struct talitos_edesc {
int src_nents;
int dst_nents;
int dma_len;
@ -762,7 +762,7 @@ struct ipsec_esp_edesc {
};
static void ipsec_esp_unmap(struct device *dev,
struct ipsec_esp_edesc *edesc,
struct talitos_edesc *edesc,
struct aead_request *areq)
{
unmap_single_talitos_ptr(dev, &edesc->desc.ptr[6], DMA_FROM_DEVICE);
@ -795,8 +795,8 @@ static void ipsec_esp_encrypt_done(struct device *dev,
int err)
{
struct aead_request *areq = context;
struct ipsec_esp_edesc *edesc =
container_of(desc, struct ipsec_esp_edesc, desc);
struct talitos_edesc *edesc =
container_of(desc, struct talitos_edesc, desc);
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct scatterlist *sg;
@ -823,8 +823,8 @@ static void ipsec_esp_decrypt_swauth_done(struct device *dev,
int err)
{
struct aead_request *req = context;
struct ipsec_esp_edesc *edesc =
container_of(desc, struct ipsec_esp_edesc, desc);
struct talitos_edesc *edesc =
container_of(desc, struct talitos_edesc, desc);
struct crypto_aead *authenc = crypto_aead_reqtfm(req);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct scatterlist *sg;
@ -855,8 +855,8 @@ static void ipsec_esp_decrypt_hwauth_done(struct device *dev,
int err)
{
struct aead_request *req = context;
struct ipsec_esp_edesc *edesc =
container_of(desc, struct ipsec_esp_edesc, desc);
struct talitos_edesc *edesc =
container_of(desc, struct talitos_edesc, desc);
ipsec_esp_unmap(dev, edesc, req);
@ -910,7 +910,7 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
/*
* fill in and submit ipsec_esp descriptor
*/
static int ipsec_esp(struct ipsec_esp_edesc *edesc, struct aead_request *areq,
static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
u8 *giv, u64 seq,
void (*callback) (struct device *dev,
struct talitos_desc *desc,
@ -1052,14 +1052,14 @@ static int sg_count(struct scatterlist *sg_list, int nbytes)
}
/*
* allocate and map the ipsec_esp extended descriptor
* allocate and map the extended descriptor
*/
static struct ipsec_esp_edesc *ipsec_esp_edesc_alloc(struct aead_request *areq,
static struct talitos_edesc *ipsec_esp_edesc_alloc(struct aead_request *areq,
int icv_stashing)
{
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct ipsec_esp_edesc *edesc;
struct talitos_edesc *edesc;
int src_nents, dst_nents, alloc_len, dma_len;
gfp_t flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL :
GFP_ATOMIC;
@ -1084,7 +1084,7 @@ static struct ipsec_esp_edesc *ipsec_esp_edesc_alloc(struct aead_request *areq,
* allowing for two separate entries for ICV and generated ICV (+ 2),
* and the ICV data itself
*/
alloc_len = sizeof(struct ipsec_esp_edesc);
alloc_len = sizeof(struct talitos_edesc);
if (src_nents || dst_nents) {
dma_len = (src_nents + dst_nents + 2) *
sizeof(struct talitos_ptr) + ctx->authsize;
@ -1109,11 +1109,11 @@ static struct ipsec_esp_edesc *ipsec_esp_edesc_alloc(struct aead_request *areq,
return edesc;
}
static int aead_authenc_encrypt(struct aead_request *req)
static int aead_encrypt(struct aead_request *req)
{
struct crypto_aead *authenc = crypto_aead_reqtfm(req);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct ipsec_esp_edesc *edesc;
struct talitos_edesc *edesc;
/* allocate extended descriptor */
edesc = ipsec_esp_edesc_alloc(req, 0);
@ -1128,13 +1128,13 @@ static int aead_authenc_encrypt(struct aead_request *req)
static int aead_authenc_decrypt(struct aead_request *req)
static int aead_decrypt(struct aead_request *req)
{
struct crypto_aead *authenc = crypto_aead_reqtfm(req);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
unsigned int authsize = ctx->authsize;
struct talitos_private *priv = dev_get_drvdata(ctx->dev);
struct ipsec_esp_edesc *edesc;
struct talitos_edesc *edesc;
struct scatterlist *sg;
void *icvdata;
@ -1180,13 +1180,12 @@ static int aead_authenc_decrypt(struct aead_request *req)
}
}
static int aead_authenc_givencrypt(
struct aead_givcrypt_request *req)
static int aead_givencrypt(struct aead_givcrypt_request *req)
{
struct aead_request *areq = &req->areq;
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
struct ipsec_esp_edesc *edesc;
struct talitos_edesc *edesc;
/* allocate extended descriptor */
edesc = ipsec_esp_edesc_alloc(areq, 0);
@ -1205,30 +1204,30 @@ static int aead_authenc_givencrypt(
}
struct talitos_alg_template {
char name[CRYPTO_MAX_ALG_NAME];
char driver_name[CRYPTO_MAX_ALG_NAME];
unsigned int blocksize;
struct aead_alg aead;
struct device *dev;
struct crypto_alg alg;
__be32 desc_hdr_template;
};
static struct talitos_alg_template driver_algs[] = {
/* single-pass ipsec_esp descriptor */
/* AEAD algorithms. These use a single-pass ipsec_esp descriptor */
{
.name = "authenc(hmac(sha1),cbc(aes))",
.driver_name = "authenc-hmac-sha1-cbc-aes-talitos",
.blocksize = AES_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA1_DIGEST_SIZE,
},
.alg = {
.cra_name = "authenc(hmac(sha1),cbc(aes))",
.cra_driver_name = "authenc-hmac-sha1-cbc-aes-talitos",
.cra_blocksize = AES_BLOCK_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_type = &crypto_aead_type,
.cra_aead = {
.setkey = aead_setkey,
.setauthsize = aead_setauthsize,
.encrypt = aead_encrypt,
.decrypt = aead_decrypt,
.givencrypt = aead_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA1_DIGEST_SIZE,
}
},
.desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
DESC_HDR_SEL0_AESU |
DESC_HDR_MODE0_AESU_CBC |
@ -1238,19 +1237,23 @@ static struct talitos_alg_template driver_algs[] = {
DESC_HDR_MODE1_MDEU_SHA1_HMAC,
},
{
.name = "authenc(hmac(sha1),cbc(des3_ede))",
.driver_name = "authenc-hmac-sha1-cbc-3des-talitos",
.blocksize = DES3_EDE_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = SHA1_DIGEST_SIZE,
},
.alg = {
.cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
.cra_driver_name = "authenc-hmac-sha1-cbc-3des-talitos",
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_type = &crypto_aead_type,
.cra_aead = {
.setkey = aead_setkey,
.setauthsize = aead_setauthsize,
.encrypt = aead_encrypt,
.decrypt = aead_decrypt,
.givencrypt = aead_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = SHA1_DIGEST_SIZE,
}
},
.desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
DESC_HDR_SEL0_DEU |
DESC_HDR_MODE0_DEU_CBC |
@ -1261,19 +1264,23 @@ static struct talitos_alg_template driver_algs[] = {
DESC_HDR_MODE1_MDEU_SHA1_HMAC,
},
{
.name = "authenc(hmac(sha256),cbc(aes))",
.driver_name = "authenc-hmac-sha256-cbc-aes-talitos",
.blocksize = AES_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA256_DIGEST_SIZE,
},
.alg = {
.cra_name = "authenc(hmac(sha256),cbc(aes))",
.cra_driver_name = "authenc-hmac-sha256-cbc-aes-talitos",
.cra_blocksize = AES_BLOCK_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_type = &crypto_aead_type,
.cra_aead = {
.setkey = aead_setkey,
.setauthsize = aead_setauthsize,
.encrypt = aead_encrypt,
.decrypt = aead_decrypt,
.givencrypt = aead_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA256_DIGEST_SIZE,
}
},
.desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
DESC_HDR_SEL0_AESU |
DESC_HDR_MODE0_AESU_CBC |
@ -1283,19 +1290,23 @@ static struct talitos_alg_template driver_algs[] = {
DESC_HDR_MODE1_MDEU_SHA256_HMAC,
},
{
.name = "authenc(hmac(sha256),cbc(des3_ede))",
.driver_name = "authenc-hmac-sha256-cbc-3des-talitos",
.blocksize = DES3_EDE_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = SHA256_DIGEST_SIZE,
},
.alg = {
.cra_name = "authenc(hmac(sha256),cbc(des3_ede))",
.cra_driver_name = "authenc-hmac-sha256-cbc-3des-talitos",
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_type = &crypto_aead_type,
.cra_aead = {
.setkey = aead_setkey,
.setauthsize = aead_setauthsize,
.encrypt = aead_encrypt,
.decrypt = aead_decrypt,
.givencrypt = aead_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = SHA256_DIGEST_SIZE,
}
},
.desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
DESC_HDR_SEL0_DEU |
DESC_HDR_MODE0_DEU_CBC |
@ -1306,19 +1317,23 @@ static struct talitos_alg_template driver_algs[] = {
DESC_HDR_MODE1_MDEU_SHA256_HMAC,
},
{
.name = "authenc(hmac(md5),cbc(aes))",
.driver_name = "authenc-hmac-md5-cbc-aes-talitos",
.blocksize = AES_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = MD5_DIGEST_SIZE,
},
.alg = {
.cra_name = "authenc(hmac(md5),cbc(aes))",
.cra_driver_name = "authenc-hmac-md5-cbc-aes-talitos",
.cra_blocksize = AES_BLOCK_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_type = &crypto_aead_type,
.cra_aead = {
.setkey = aead_setkey,
.setauthsize = aead_setauthsize,
.encrypt = aead_encrypt,
.decrypt = aead_decrypt,
.givencrypt = aead_givencrypt,
.geniv = "<built-in>",
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = MD5_DIGEST_SIZE,
}
},
.desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
DESC_HDR_SEL0_AESU |
DESC_HDR_MODE0_AESU_CBC |
@ -1328,19 +1343,23 @@ static struct talitos_alg_template driver_algs[] = {
DESC_HDR_MODE1_MDEU_MD5_HMAC,
},
{
.name = "authenc(hmac(md5),cbc(des3_ede))",
.driver_name = "authenc-hmac-md5-cbc-3des-talitos",
.blocksize = DES3_EDE_BLOCK_SIZE,
.aead = {
.setkey = aead_authenc_setkey,
.setauthsize = aead_authenc_setauthsize,
.encrypt = aead_authenc_encrypt,
.decrypt = aead_authenc_decrypt,
.givencrypt = aead_authenc_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = MD5_DIGEST_SIZE,
},
.alg = {
.cra_name = "authenc(hmac(md5),cbc(des3_ede))",
.cra_driver_name = "authenc-hmac-md5-cbc-3des-talitos",
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_type = &crypto_aead_type,
.cra_aead = {
.setkey = aead_setkey,
.setauthsize = aead_setauthsize,
.encrypt = aead_encrypt,
.decrypt = aead_decrypt,
.givencrypt = aead_givencrypt,
.geniv = "<built-in>",
.ivsize = DES3_EDE_BLOCK_SIZE,
.maxauthsize = MD5_DIGEST_SIZE,
}
},
.desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP |
DESC_HDR_SEL0_DEU |
DESC_HDR_MODE0_DEU_CBC |
@ -1453,19 +1472,13 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
return ERR_PTR(-ENOMEM);
alg = &t_alg->crypto_alg;
*alg = template->alg;
snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name);
snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
template->driver_name);
alg->cra_module = THIS_MODULE;
alg->cra_init = talitos_cra_init;
alg->cra_priority = TALITOS_CRA_PRIORITY;
alg->cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC;
alg->cra_blocksize = template->blocksize;
alg->cra_alignmask = 0;
alg->cra_type = &crypto_aead_type;
alg->cra_ctxsize = sizeof(struct talitos_ctx);
alg->cra_u.aead = template->aead;
t_alg->desc_hdr_template = template->desc_hdr_template;
t_alg->dev = dev;