n2_crypto: Make ahash parameterization explicit.
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>
diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c
index 77939e4..d01a2af 100644
--- a/drivers/crypto/n2_core.c
+++ b/drivers/crypto/n2_core.c
@@ -239,6 +239,26 @@
}
#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 sha256_state sha256;
} u;
- unsigned char hash_key[64];
- unsigned char keyed_zero_hash[32];
-
struct ahash_request fallback_req;
};
@@ -374,9 +391,9 @@
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 @@
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 @@
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 @@
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;