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n2_crypto: Make ahash parameterization explicit.

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All of the ahash ->digest() ops do essentially the same thing, just
using different parameters.

So instead, have a single n2_hash_async_digest() and use an
n2_ahash_alg container that provides the parameters.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2010-05-22 02:45:56 -07:00
parent 38511108a3
commit 3a2c034697
1 changed files with 99 additions and 117 deletions
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216
drivers/crypto/n2_core.c
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@ -239,6 +239,26 @@ static inline bool n2_should_run_async(struct spu_queue *qp, int this_len)
}
#endif
struct n2_ahash_alg {
struct list_head entry;
const char *hash_zero;
const u32 *hash_init;
u8 hw_op_hashsz;
u8 digest_size;
u8 auth_type;
struct ahash_alg alg;
};
static inline struct n2_ahash_alg *n2_ahash_alg(struct crypto_tfm *tfm)
{
struct crypto_alg *alg = tfm->__crt_alg;
struct ahash_alg *ahash_alg;
ahash_alg = container_of(alg, struct ahash_alg, halg.base);
return container_of(ahash_alg, struct n2_ahash_alg, alg);
}
struct n2_hash_ctx {
struct crypto_ahash *fallback_tfm;
};
@ -250,9 +270,6 @@ struct n2_hash_req_ctx {
struct sha256_state sha256;
} u;
unsigned char hash_key[64];
unsigned char keyed_zero_hash[32];
struct ahash_request fallback_req;
};
@ -374,9 +391,9 @@ static unsigned long submit_and_wait_for_tail(struct spu_queue *qp,
return hv_ret;
}
static int n2_hash_async_digest(struct ahash_request *req,
unsigned int auth_type, unsigned int digest_size,
unsigned int result_size, void *hash_loc)
static int n2_do_async_digest(struct ahash_request *req,
unsigned int auth_type, unsigned int digest_size,
unsigned int result_size, void *hash_loc)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
struct cwq_initial_entry *ent;
@ -462,114 +479,22 @@ out:
return err;
}
static int n2_md5_async_digest(struct ahash_request *req)
static int n2_hash_async_digest(struct ahash_request *req)
{
struct n2_ahash_alg *n2alg = n2_ahash_alg(req->base.tfm);
struct n2_hash_req_ctx *rctx = ahash_request_ctx(req);
struct md5_state *m = &rctx->u.md5;
int ds;
ds = n2alg->digest_size;
if (unlikely(req->nbytes == 0)) {
static const char md5_zero[MD5_DIGEST_SIZE] = {
0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
};
memcpy(req->result, md5_zero, MD5_DIGEST_SIZE);
memcpy(req->result, n2alg->hash_zero, ds);
return 0;
}
m->hash[0] = cpu_to_le32(0x67452301);
m->hash[1] = cpu_to_le32(0xefcdab89);
m->hash[2] = cpu_to_le32(0x98badcfe);
m->hash[3] = cpu_to_le32(0x10325476);
memcpy(&rctx->u, n2alg->hash_init, n2alg->hw_op_hashsz);
return n2_hash_async_digest(req, AUTH_TYPE_MD5,
MD5_DIGEST_SIZE, MD5_DIGEST_SIZE,
m->hash);
}
static int n2_sha1_async_digest(struct ahash_request *req)
{
struct n2_hash_req_ctx *rctx = ahash_request_ctx(req);
struct sha1_state *s = &rctx->u.sha1;
if (unlikely(req->nbytes == 0)) {
static const char sha1_zero[SHA1_DIGEST_SIZE] = {
0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32,
0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8,
0x07, 0x09
};
memcpy(req->result, sha1_zero, SHA1_DIGEST_SIZE);
return 0;
}
s->state[0] = SHA1_H0;
s->state[1] = SHA1_H1;
s->state[2] = SHA1_H2;
s->state[3] = SHA1_H3;
s->state[4] = SHA1_H4;
return n2_hash_async_digest(req, AUTH_TYPE_SHA1,
SHA1_DIGEST_SIZE, SHA1_DIGEST_SIZE,
s->state);
}
static int n2_sha256_async_digest(struct ahash_request *req)
{
struct n2_hash_req_ctx *rctx = ahash_request_ctx(req);
struct sha256_state *s = &rctx->u.sha256;
if (req->nbytes == 0) {
static const char sha256_zero[SHA256_DIGEST_SIZE] = {
0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a,
0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae,
0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99,
0x1b, 0x78, 0x52, 0xb8, 0x55
};
memcpy(req->result, sha256_zero, SHA256_DIGEST_SIZE);
return 0;
}
s->state[0] = SHA256_H0;
s->state[1] = SHA256_H1;
s->state[2] = SHA256_H2;
s->state[3] = SHA256_H3;
s->state[4] = SHA256_H4;
s->state[5] = SHA256_H5;
s->state[6] = SHA256_H6;
s->state[7] = SHA256_H7;
return n2_hash_async_digest(req, AUTH_TYPE_SHA256,
SHA256_DIGEST_SIZE, SHA256_DIGEST_SIZE,
s->state);
}
static int n2_sha224_async_digest(struct ahash_request *req)
{
struct n2_hash_req_ctx *rctx = ahash_request_ctx(req);
struct sha256_state *s = &rctx->u.sha256;
if (req->nbytes == 0) {
static const char sha224_zero[SHA224_DIGEST_SIZE] = {
0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
0x2f
};
memcpy(req->result, sha224_zero, SHA224_DIGEST_SIZE);
return 0;
}
s->state[0] = SHA224_H0;
s->state[1] = SHA224_H1;
s->state[2] = SHA224_H2;
s->state[3] = SHA224_H3;
s->state[4] = SHA224_H4;
s->state[5] = SHA224_H5;
s->state[6] = SHA224_H6;
s->state[7] = SHA224_H7;
return n2_hash_async_digest(req, AUTH_TYPE_SHA256,
SHA256_DIGEST_SIZE, SHA224_DIGEST_SIZE,
s->state);
return n2_do_async_digest(req, n2alg->auth_type,
n2alg->hw_op_hashsz, ds,
&rctx->u);
}
struct n2_cipher_context {
@ -1196,34 +1121,85 @@ static LIST_HEAD(cipher_algs);
struct n2_hash_tmpl {
const char *name;
int (*digest)(struct ahash_request *req);
const char *hash_zero;
const u32 *hash_init;
u8 hw_op_hashsz;
u8 digest_size;
u8 block_size;
u8 auth_type;
};
static const char md5_zero[MD5_DIGEST_SIZE] = {
0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
};
static const u32 md5_init[MD5_HASH_WORDS] = {
cpu_to_le32(0x67452301),
cpu_to_le32(0xefcdab89),
cpu_to_le32(0x98badcfe),
cpu_to_le32(0x10325476),
};
static const char sha1_zero[SHA1_DIGEST_SIZE] = {
0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32,
0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8,
0x07, 0x09
};
static const u32 sha1_init[SHA1_DIGEST_SIZE / 4] = {
SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4,
};
static const char sha256_zero[SHA256_DIGEST_SIZE] = {
0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a,
0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae,
0x41, 0xe4, 0x64, 0x9b, 0x93, 0x4c, 0xa4, 0x95, 0x99,
0x1b, 0x78, 0x52, 0xb8, 0x55
};
static const u32 sha256_init[SHA256_DIGEST_SIZE / 4] = {
SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3,
SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7,
};
static const char sha224_zero[SHA224_DIGEST_SIZE] = {
0xd1, 0x4a, 0x02, 0x8c, 0x2a, 0x3a, 0x2b, 0xc9, 0x47,
0x61, 0x02, 0xbb, 0x28, 0x82, 0x34, 0xc4, 0x15, 0xa2,
0xb0, 0x1f, 0x82, 0x8e, 0xa6, 0x2a, 0xc5, 0xb3, 0xe4,
0x2f
};
static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = {
SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3,
SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7,
};
static const struct n2_hash_tmpl hash_tmpls[] = {
{ .name = "md5",
.digest = n2_md5_async_digest,
.hash_zero = md5_zero,
.hash_init = md5_init,
.auth_type = AUTH_TYPE_MD5,
.hw_op_hashsz = MD5_DIGEST_SIZE,
.digest_size = MD5_DIGEST_SIZE,
.block_size = MD5_HMAC_BLOCK_SIZE },
{ .name = "sha1",
.digest = n2_sha1_async_digest,
.hash_zero = sha1_zero,
.hash_init = sha1_init,
.auth_type = AUTH_TYPE_SHA1,
.hw_op_hashsz = SHA1_DIGEST_SIZE,
.digest_size = SHA1_DIGEST_SIZE,
.block_size = SHA1_BLOCK_SIZE },
{ .name = "sha256",
.digest = n2_sha256_async_digest,
.hash_zero = sha256_zero,
.hash_init = sha256_init,
.auth_type = AUTH_TYPE_SHA256,
.hw_op_hashsz = SHA256_DIGEST_SIZE,
.digest_size = SHA256_DIGEST_SIZE,
.block_size = SHA256_BLOCK_SIZE },
{ .name = "sha224",
.digest = n2_sha224_async_digest,
.hash_zero = sha224_zero,
.hash_init = sha224_init,
.auth_type = AUTH_TYPE_SHA256,
.hw_op_hashsz = SHA256_DIGEST_SIZE,
.digest_size = SHA224_DIGEST_SIZE,
.block_size = SHA224_BLOCK_SIZE },
};
#define NUM_HASH_TMPLS ARRAY_SIZE(hash_tmpls)
struct n2_ahash_alg {
struct list_head entry;
struct ahash_alg alg;
};
static LIST_HEAD(ahash_algs);
static int algs_registered;
@ -1297,12 +1273,18 @@ static int __devinit __n2_register_one_ahash(const struct n2_hash_tmpl *tmpl)
if (!p)
return -ENOMEM;
p->hash_zero = tmpl->hash_zero;
p->hash_init = tmpl->hash_init;
p->auth_type = tmpl->auth_type;
p->hw_op_hashsz = tmpl->hw_op_hashsz;
p->digest_size = tmpl->digest_size;
ahash = &p->alg;
ahash->init = n2_hash_async_init;
ahash->update = n2_hash_async_update;
ahash->final = n2_hash_async_final;
ahash->finup = n2_hash_async_finup;
ahash->digest = tmpl->digest;
ahash->digest = n2_hash_async_digest;
halg = &ahash->halg;
halg->digestsize = tmpl->digest_size;