From 3a2c034697558602a72e51897c6d3665bc515927 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sat, 22 May 2010 02:45:56 -0700 Subject: [PATCH] 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 --- drivers/crypto/n2_core.c | 216 ++++++++++++++++++--------------------- 1 file changed, 99 insertions(+), 117 deletions(-) diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c index 77939e40e26f..d01a2afda6e9 100644 --- a/drivers/crypto/n2_core.c +++ b/drivers/crypto/n2_core.c @@ -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) -{ - struct n2_hash_req_ctx *rctx = ahash_request_ctx(req); - struct md5_state *m = &rctx->u.md5; - - 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); - 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); - - 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) +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 sha1_state *s = &rctx->u.sha1; + int ds; + ds = n2alg->digest_size; 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); + memcpy(req->result, n2alg->hash_zero, ds); 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; + memcpy(&rctx->u, n2alg->hash_init, n2alg->hw_op_hashsz); - 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; -- 2.20.1