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crypto: mips/octeon-md5 - Use API partial block handling

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Use the Crypto API partial block handling.

Also switch to the generic export format.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2025-04-18 10:59:06 +08:00
parent efd62c8552
commit f53fc0d8e9
1 changed files with 63 additions and 56 deletions
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119
arch/mips/cavium-octeon/crypto/octeon-md5.c
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@ -19,22 +19,26 @@
* any later version.
*/
#include <crypto/md5.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/string.h>
#include <asm/byteorder.h>
#include <asm/octeon/octeon.h>
#include <crypto/internal/hash.h>
#include <crypto/md5.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/unaligned.h>
#include "octeon-crypto.h"
struct octeon_md5_state {
__le32 hash[MD5_HASH_WORDS];
u64 byte_count;
};
/*
* We pass everything as 64-bit. OCTEON can handle misaligned data.
*/
static void octeon_md5_store_hash(struct md5_state *ctx)
static void octeon_md5_store_hash(struct octeon_md5_state *ctx)
{
u64 *hash = (u64 *)ctx->hash;
@ -42,7 +46,7 @@ static void octeon_md5_store_hash(struct md5_state *ctx)
write_octeon_64bit_hash_dword(hash[1], 1);
}
static void octeon_md5_read_hash(struct md5_state *ctx)
static void octeon_md5_read_hash(struct octeon_md5_state *ctx)
{
u64 *hash = (u64 *)ctx->hash;
@ -66,13 +70,12 @@ static void octeon_md5_transform(const void *_block)
static int octeon_md5_init(struct shash_desc *desc)
{
struct md5_state *mctx = shash_desc_ctx(desc);
struct octeon_md5_state *mctx = shash_desc_ctx(desc);
mctx->hash[0] = MD5_H0;
mctx->hash[1] = MD5_H1;
mctx->hash[2] = MD5_H2;
mctx->hash[3] = MD5_H3;
cpu_to_le32_array(mctx->hash, 4);
mctx->hash[0] = cpu_to_le32(MD5_H0);
mctx->hash[1] = cpu_to_le32(MD5_H1);
mctx->hash[2] = cpu_to_le32(MD5_H2);
mctx->hash[3] = cpu_to_le32(MD5_H3);
mctx->byte_count = 0;
return 0;
@ -81,52 +84,38 @@ static int octeon_md5_init(struct shash_desc *desc)
static int octeon_md5_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
struct md5_state *mctx = shash_desc_ctx(desc);
const u32 avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
struct octeon_md5_state *mctx = shash_desc_ctx(desc);
struct octeon_cop2_state state;
unsigned long flags;
mctx->byte_count += len;
if (avail > len) {
memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
data, len);
return 0;
}
memcpy((char *)mctx->block + (sizeof(mctx->block) - avail), data,
avail);
flags = octeon_crypto_enable(&state);
octeon_md5_store_hash(mctx);
octeon_md5_transform(mctx->block);
data += avail;
len -= avail;
while (len >= sizeof(mctx->block)) {
do {
octeon_md5_transform(data);
data += sizeof(mctx->block);
len -= sizeof(mctx->block);
}
data += MD5_HMAC_BLOCK_SIZE;
len -= MD5_HMAC_BLOCK_SIZE;
} while (len >= MD5_HMAC_BLOCK_SIZE);
octeon_md5_read_hash(mctx);
octeon_crypto_disable(&state, flags);
memcpy(mctx->block, data, len);
return 0;
mctx->byte_count -= len;
return len;
}
static int octeon_md5_final(struct shash_desc *desc, u8 *out)
static int octeon_md5_finup(struct shash_desc *desc, const u8 *src,
unsigned int offset, u8 *out)
{
struct md5_state *mctx = shash_desc_ctx(desc);
const unsigned int offset = mctx->byte_count & 0x3f;
char *p = (char *)mctx->block + offset;
struct octeon_md5_state *mctx = shash_desc_ctx(desc);
int padding = 56 - (offset + 1);
struct octeon_cop2_state state;
u32 block[MD5_BLOCK_WORDS];
unsigned long flags;
char *p;
p = memcpy(block, src, offset);
p += offset;
*p++ = 0x80;
flags = octeon_crypto_enable(&state);
@ -134,39 +123,56 @@ static int octeon_md5_final(struct shash_desc *desc, u8 *out)
if (padding < 0) {
memset(p, 0x00, padding + sizeof(u64));
octeon_md5_transform(mctx->block);
p = (char *)mctx->block;
octeon_md5_transform(block);
p = (char *)block;
padding = 56;
}
memset(p, 0, padding);
mctx->block[14] = mctx->byte_count << 3;
mctx->block[15] = mctx->byte_count >> 29;
cpu_to_le32_array(mctx->block + 14, 2);
octeon_md5_transform(mctx->block);
mctx->byte_count += offset;
block[14] = mctx->byte_count << 3;
block[15] = mctx->byte_count >> 29;
cpu_to_le32_array(block + 14, 2);
octeon_md5_transform(block);
octeon_md5_read_hash(mctx);
octeon_crypto_disable(&state, flags);
memzero_explicit(block, sizeof(block));
memcpy(out, mctx->hash, sizeof(mctx->hash));
memset(mctx, 0, sizeof(*mctx));
return 0;
}
static int octeon_md5_export(struct shash_desc *desc, void *out)
{
struct md5_state *ctx = shash_desc_ctx(desc);
struct octeon_md5_state *ctx = shash_desc_ctx(desc);
union {
u8 *u8;
u32 *u32;
u64 *u64;
} p = { .u8 = out };
int i;
memcpy(out, ctx, sizeof(*ctx));
for (i = 0; i < MD5_HASH_WORDS; i++)
put_unaligned(le32_to_cpu(ctx->hash[i]), p.u32++);
put_unaligned(ctx->byte_count, p.u64);
return 0;
}
static int octeon_md5_import(struct shash_desc *desc, const void *in)
{
struct md5_state *ctx = shash_desc_ctx(desc);
struct octeon_md5_state *ctx = shash_desc_ctx(desc);
union {
const u8 *u8;
const u32 *u32;
const u64 *u64;
} p = { .u8 = in };
int i;
memcpy(ctx, in, sizeof(*ctx));
for (i = 0; i < MD5_HASH_WORDS; i++)
ctx->hash[i] = cpu_to_le32(get_unaligned(p.u32++));
ctx->byte_count = get_unaligned(p.u64);
return 0;
}
@ -174,15 +180,16 @@ static struct shash_alg alg = {
.digestsize = MD5_DIGEST_SIZE,
.init = octeon_md5_init,
.update = octeon_md5_update,
.final = octeon_md5_final,
.finup = octeon_md5_finup,
.export = octeon_md5_export,
.import = octeon_md5_import,
.descsize = sizeof(struct md5_state),
.statesize = sizeof(struct md5_state),
.statesize = MD5_STATE_SIZE,
.descsize = sizeof(struct octeon_md5_state),
.base = {
.cra_name = "md5",
.cra_driver_name= "octeon-md5",
.cra_priority = OCTEON_CR_OPCODE_PRIORITY,
.cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY,
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}