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tcrypt.c
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tcrypt.c
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/*
* Quick & dirty crypto testing module.
*
* This will only exist until we have a better testing mechanism
* (e.g. a char device).
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
* Copyright (c) 2002 Jean-Francois Dive <jef@linuxbe.org>
* Copyright (c) 2007 Nokia Siemens Networks
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* 2007-11-13 Added GCM tests
* 2007-11-13 Added AEAD support
* 2007-11-06 Added SHA-224 and SHA-224-HMAC tests
* 2006-12-07 Added SHA384 HMAC and SHA512 HMAC tests
* 2004-08-09 Added cipher speed tests (Reyk Floeter <reyk@vantronix.net>)
* 2003-09-14 Rewritten by Kartikey Mahendra Bhatt
*
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/scatterlist.h>
#include <linux/string.h>
#include <linux/crypto.h>
#include <linux/highmem.h>
#include <linux/moduleparam.h>
#include <linux/jiffies.h>
#include <linux/timex.h>
#include <linux/interrupt.h>
#include "tcrypt.h"
/*
* Need to kmalloc() memory for testing kmap().
*/
#define TVMEMSIZE 16384
#define XBUFSIZE 32768
/*
* Indexes into the xbuf to simulate cross-page access.
*/
#define IDX1 37
#define IDX2 32400
#define IDX3 1
#define IDX4 8193
#define IDX5 22222
#define IDX6 17101
#define IDX7 27333
#define IDX8 3000
/*
* Used by test_cipher()
*/
#define ENCRYPT 1
#define DECRYPT 0
struct tcrypt_result {
struct completion completion;
int err;
};
static unsigned int IDX[8] = { IDX1, IDX2, IDX3, IDX4, IDX5, IDX6, IDX7, IDX8 };
/*
* Used by test_cipher_speed()
*/
static unsigned int sec;
static int mode;
static char *xbuf;
static char *axbuf;
static char *tvmem;
static char *check[] = {
"des", "md5", "des3_ede", "rot13", "sha1", "sha224", "sha256",
"blowfish", "twofish", "serpent", "sha384", "sha512", "md4", "aes",
"cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
"arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta", "fcrypt",
"camellia", "seed", "salsa20", "lzo", NULL
};
static void hexdump(unsigned char *buf, unsigned int len)
{
print_hex_dump(KERN_CONT, "", DUMP_PREFIX_OFFSET,
16, 1,
buf, len, false);
}
static void tcrypt_complete(struct crypto_async_request *req, int err)
{
struct tcrypt_result *res = req->data;
if (err == -EINPROGRESS)
return;
res->err = err;
complete(&res->completion);
}
static void test_hash(char *algo, struct hash_testvec *template,
unsigned int tcount)
{
unsigned int i, j, k, temp;
struct scatterlist sg[8];
char result[64];
struct crypto_hash *tfm;
struct hash_desc desc;
struct hash_testvec *hash_tv;
unsigned int tsize;
int ret;
printk("\ntesting %s\n", algo);
tsize = sizeof(struct hash_testvec);
tsize *= tcount;
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize, TVMEMSIZE);
return;
}
memcpy(tvmem, template, tsize);
hash_tv = (void *)tvmem;
tfm = crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
printk("failed to load transform for %s: %ld\n", algo,
PTR_ERR(tfm));
return;
}
desc.tfm = tfm;
desc.flags = 0;
for (i = 0; i < tcount; i++) {
printk("test %u:\n", i + 1);
memset(result, 0, 64);
sg_init_one(&sg[0], hash_tv[i].plaintext, hash_tv[i].psize);
if (hash_tv[i].ksize) {
ret = crypto_hash_setkey(tfm, hash_tv[i].key,
hash_tv[i].ksize);
if (ret) {
printk("setkey() failed ret=%d\n", ret);
goto out;
}
}
ret = crypto_hash_digest(&desc, sg, hash_tv[i].psize, result);
if (ret) {
printk("digest () failed ret=%d\n", ret);
goto out;
}
hexdump(result, crypto_hash_digestsize(tfm));
printk("%s\n",
memcmp(result, hash_tv[i].digest,
crypto_hash_digestsize(tfm)) ?
"fail" : "pass");
}
printk("testing %s across pages\n", algo);
/* setup the dummy buffer first */
memset(xbuf, 0, XBUFSIZE);
j = 0;
for (i = 0; i < tcount; i++) {
if (hash_tv[i].np) {
j++;
printk("test %u:\n", j);
memset(result, 0, 64);
temp = 0;
sg_init_table(sg, hash_tv[i].np);
for (k = 0; k < hash_tv[i].np; k++) {
memcpy(&xbuf[IDX[k]],
hash_tv[i].plaintext + temp,
hash_tv[i].tap[k]);
temp += hash_tv[i].tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
hash_tv[i].tap[k]);
}
if (hash_tv[i].ksize) {
ret = crypto_hash_setkey(tfm, hash_tv[i].key,
hash_tv[i].ksize);
if (ret) {
printk("setkey() failed ret=%d\n", ret);
goto out;
}
}
ret = crypto_hash_digest(&desc, sg, hash_tv[i].psize,
result);
if (ret) {
printk("digest () failed ret=%d\n", ret);
goto out;
}
hexdump(result, crypto_hash_digestsize(tfm));
printk("%s\n",
memcmp(result, hash_tv[i].digest,
crypto_hash_digestsize(tfm)) ?
"fail" : "pass");
}
}
out:
crypto_free_hash(tfm);
}
static void test_aead(char *algo, int enc, struct aead_testvec *template,
unsigned int tcount)
{
unsigned int ret, i, j, k, temp;
unsigned int tsize;
char *q;
struct crypto_aead *tfm;
char *key;
struct aead_testvec *aead_tv;
struct aead_request *req;
struct scatterlist sg[8];
struct scatterlist asg[8];
const char *e;
struct tcrypt_result result;
unsigned int authsize;
if (enc == ENCRYPT)
e = "encryption";
else
e = "decryption";
printk(KERN_INFO "\ntesting %s %s\n", algo, e);
tsize = sizeof(struct aead_testvec);
tsize *= tcount;
if (tsize > TVMEMSIZE) {
printk(KERN_INFO "template (%u) too big for tvmem (%u)\n",
tsize, TVMEMSIZE);
return;
}
memcpy(tvmem, template, tsize);
aead_tv = (void *)tvmem;
init_completion(&result.completion);
tfm = crypto_alloc_aead(algo, 0, 0);
if (IS_ERR(tfm)) {
printk(KERN_INFO "failed to load transform for %s: %ld\n",
algo, PTR_ERR(tfm));
return;
}
req = aead_request_alloc(tfm, GFP_KERNEL);
if (!req) {
printk(KERN_INFO "failed to allocate request for %s\n", algo);
goto out;
}
aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
tcrypt_complete, &result);
for (i = 0, j = 0; i < tcount; i++) {
if (!aead_tv[i].np) {
printk(KERN_INFO "test %u (%d bit key):\n",
++j, aead_tv[i].klen * 8);
crypto_aead_clear_flags(tfm, ~0);
if (aead_tv[i].wk)
crypto_aead_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
key = aead_tv[i].key;
ret = crypto_aead_setkey(tfm, key,
aead_tv[i].klen);
if (ret) {
printk(KERN_INFO "setkey() failed flags=%x\n",
crypto_aead_get_flags(tfm));
if (!aead_tv[i].fail)
goto out;
}
authsize = abs(aead_tv[i].rlen - aead_tv[i].ilen);
ret = crypto_aead_setauthsize(tfm, authsize);
if (ret) {
printk(KERN_INFO
"failed to set authsize = %u\n",
authsize);
goto out;
}
sg_init_one(&sg[0], aead_tv[i].input,
aead_tv[i].ilen + (enc ? authsize : 0));
sg_init_one(&asg[0], aead_tv[i].assoc,
aead_tv[i].alen);
aead_request_set_crypt(req, sg, sg,
aead_tv[i].ilen,
aead_tv[i].iv);
aead_request_set_assoc(req, asg, aead_tv[i].alen);
ret = enc ?
crypto_aead_encrypt(req) :
crypto_aead_decrypt(req);
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&result.completion);
if (!ret && !(ret = result.err)) {
INIT_COMPLETION(result.completion);
break;
}
/* fall through */
default:
printk(KERN_INFO "%s () failed err=%d\n",
e, -ret);
goto out;
}
q = kmap(sg_page(&sg[0])) + sg[0].offset;
hexdump(q, aead_tv[i].rlen);
printk(KERN_INFO "enc/dec: %s\n",
memcmp(q, aead_tv[i].result,
aead_tv[i].rlen) ? "fail" : "pass");
}
}
printk(KERN_INFO "\ntesting %s %s across pages (chunking)\n", algo, e);
memset(xbuf, 0, XBUFSIZE);
memset(axbuf, 0, XBUFSIZE);
for (i = 0, j = 0; i < tcount; i++) {
if (aead_tv[i].np) {
printk(KERN_INFO "test %u (%d bit key):\n",
++j, aead_tv[i].klen * 8);
crypto_aead_clear_flags(tfm, ~0);
if (aead_tv[i].wk)
crypto_aead_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
key = aead_tv[i].key;
ret = crypto_aead_setkey(tfm, key, aead_tv[i].klen);
if (ret) {
printk(KERN_INFO "setkey() failed flags=%x\n",
crypto_aead_get_flags(tfm));
if (!aead_tv[i].fail)
goto out;
}
sg_init_table(sg, aead_tv[i].np);
for (k = 0, temp = 0; k < aead_tv[i].np; k++) {
memcpy(&xbuf[IDX[k]],
aead_tv[i].input + temp,
aead_tv[i].tap[k]);
temp += aead_tv[i].tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
aead_tv[i].tap[k]);
}
authsize = abs(aead_tv[i].rlen - aead_tv[i].ilen);
ret = crypto_aead_setauthsize(tfm, authsize);
if (ret) {
printk(KERN_INFO
"failed to set authsize = %u\n",
authsize);
goto out;
}
if (enc)
sg[k - 1].length += authsize;
sg_init_table(asg, aead_tv[i].anp);
for (k = 0, temp = 0; k < aead_tv[i].anp; k++) {
memcpy(&axbuf[IDX[k]],
aead_tv[i].assoc + temp,
aead_tv[i].atap[k]);
temp += aead_tv[i].atap[k];
sg_set_buf(&asg[k], &axbuf[IDX[k]],
aead_tv[i].atap[k]);
}
aead_request_set_crypt(req, sg, sg,
aead_tv[i].ilen,
aead_tv[i].iv);
aead_request_set_assoc(req, asg, aead_tv[i].alen);
ret = enc ?
crypto_aead_encrypt(req) :
crypto_aead_decrypt(req);
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&result.completion);
if (!ret && !(ret = result.err)) {
INIT_COMPLETION(result.completion);
break;
}
/* fall through */
default:
printk(KERN_INFO "%s () failed err=%d\n",
e, -ret);
goto out;
}
for (k = 0, temp = 0; k < aead_tv[i].np; k++) {
printk(KERN_INFO "page %u\n", k);
q = kmap(sg_page(&sg[k])) + sg[k].offset;
hexdump(q, aead_tv[i].tap[k]);
printk(KERN_INFO "%s\n",
memcmp(q, aead_tv[i].result + temp,
aead_tv[i].tap[k] -
(k < aead_tv[i].np - 1 || enc ?
0 : authsize)) ?
"fail" : "pass");
temp += aead_tv[i].tap[k];
}
}
}
out:
crypto_free_aead(tfm);
aead_request_free(req);
}
static void test_cipher(char *algo, int enc,
struct cipher_testvec *template, unsigned int tcount)
{
unsigned int ret, i, j, k, temp;
unsigned int tsize;
char *q;
struct crypto_ablkcipher *tfm;
char *key;
struct cipher_testvec *cipher_tv;
struct ablkcipher_request *req;
struct scatterlist sg[8];
const char *e;
struct tcrypt_result result;
if (enc == ENCRYPT)
e = "encryption";
else
e = "decryption";
printk("\ntesting %s %s\n", algo, e);
tsize = sizeof (struct cipher_testvec);
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize,
TVMEMSIZE);
return;
}
cipher_tv = (void *)tvmem;
init_completion(&result.completion);
tfm = crypto_alloc_ablkcipher(algo, 0, 0);
if (IS_ERR(tfm)) {
printk("failed to load transform for %s: %ld\n", algo,
PTR_ERR(tfm));
return;
}
req = ablkcipher_request_alloc(tfm, GFP_KERNEL);
if (!req) {
printk("failed to allocate request for %s\n", algo);
goto out;
}
ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
tcrypt_complete, &result);
j = 0;
for (i = 0; i < tcount; i++) {
memcpy(cipher_tv, &template[i], tsize);
if (!(cipher_tv->np)) {
j++;
printk("test %u (%d bit key):\n",
j, cipher_tv->klen * 8);
crypto_ablkcipher_clear_flags(tfm, ~0);
if (cipher_tv->wk)
crypto_ablkcipher_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
key = cipher_tv->key;
ret = crypto_ablkcipher_setkey(tfm, key,
cipher_tv->klen);
if (ret) {
printk("setkey() failed flags=%x\n",
crypto_ablkcipher_get_flags(tfm));
if (!cipher_tv->fail)
goto out;
}
sg_init_one(&sg[0], cipher_tv->input,
cipher_tv->ilen);
ablkcipher_request_set_crypt(req, sg, sg,
cipher_tv->ilen,
cipher_tv->iv);
ret = enc ?
crypto_ablkcipher_encrypt(req) :
crypto_ablkcipher_decrypt(req);
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&result.completion);
if (!ret && !((ret = result.err))) {
INIT_COMPLETION(result.completion);
break;
}
/* fall through */
default:
printk("%s () failed err=%d\n", e, -ret);
goto out;
}
q = kmap(sg_page(&sg[0])) + sg[0].offset;
hexdump(q, cipher_tv->rlen);
printk("%s\n",
memcmp(q, cipher_tv->result,
cipher_tv->rlen) ? "fail" : "pass");
}
}
printk("\ntesting %s %s across pages (chunking)\n", algo, e);
memset(xbuf, 0, XBUFSIZE);
j = 0;
for (i = 0; i < tcount; i++) {
memcpy(cipher_tv, &template[i], tsize);
if (cipher_tv->np) {
j++;
printk("test %u (%d bit key):\n",
j, cipher_tv->klen * 8);
crypto_ablkcipher_clear_flags(tfm, ~0);
if (cipher_tv->wk)
crypto_ablkcipher_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
key = cipher_tv->key;
ret = crypto_ablkcipher_setkey(tfm, key,
cipher_tv->klen);
if (ret) {
printk("setkey() failed flags=%x\n",
crypto_ablkcipher_get_flags(tfm));
if (!cipher_tv->fail)
goto out;
}
temp = 0;
sg_init_table(sg, cipher_tv->np);
for (k = 0; k < cipher_tv->np; k++) {
memcpy(&xbuf[IDX[k]],
cipher_tv->input + temp,
cipher_tv->tap[k]);
temp += cipher_tv->tap[k];
sg_set_buf(&sg[k], &xbuf[IDX[k]],
cipher_tv->tap[k]);
}
ablkcipher_request_set_crypt(req, sg, sg,
cipher_tv->ilen,
cipher_tv->iv);
ret = enc ?
crypto_ablkcipher_encrypt(req) :
crypto_ablkcipher_decrypt(req);
switch (ret) {
case 0:
break;
case -EINPROGRESS:
case -EBUSY:
ret = wait_for_completion_interruptible(
&result.completion);
if (!ret && !((ret = result.err))) {
INIT_COMPLETION(result.completion);
break;
}
/* fall through */
default:
printk("%s () failed err=%d\n", e, -ret);
goto out;
}
temp = 0;
for (k = 0; k < cipher_tv->np; k++) {
printk("page %u\n", k);
q = kmap(sg_page(&sg[k])) + sg[k].offset;
hexdump(q, cipher_tv->tap[k]);
printk("%s\n",
memcmp(q, cipher_tv->result + temp,
cipher_tv->tap[k]) ? "fail" :
"pass");
temp += cipher_tv->tap[k];
}
}
}
out:
crypto_free_ablkcipher(tfm);
ablkcipher_request_free(req);
}
static int test_cipher_jiffies(struct blkcipher_desc *desc, int enc, char *p,
int blen, int sec)
{
struct scatterlist sg[1];
unsigned long start, end;
int bcount;
int ret;
sg_init_one(sg, p, blen);
for (start = jiffies, end = start + sec * HZ, bcount = 0;
time_before(jiffies, end); bcount++) {
if (enc)
ret = crypto_blkcipher_encrypt(desc, sg, sg, blen);
else
ret = crypto_blkcipher_decrypt(desc, sg, sg, blen);
if (ret)
return ret;
}
printk("%d operations in %d seconds (%ld bytes)\n",
bcount, sec, (long)bcount * blen);
return 0;
}
static int test_cipher_cycles(struct blkcipher_desc *desc, int enc, char *p,
int blen)
{
struct scatterlist sg[1];
unsigned long cycles = 0;
int ret = 0;
int i;
sg_init_one(sg, p, blen);
local_bh_disable();
local_irq_disable();
/* Warm-up run. */
for (i = 0; i < 4; i++) {
if (enc)
ret = crypto_blkcipher_encrypt(desc, sg, sg, blen);
else
ret = crypto_blkcipher_decrypt(desc, sg, sg, blen);
if (ret)
goto out;
}
/* The real thing. */
for (i = 0; i < 8; i++) {
cycles_t start, end;
start = get_cycles();
if (enc)
ret = crypto_blkcipher_encrypt(desc, sg, sg, blen);
else
ret = crypto_blkcipher_decrypt(desc, sg, sg, blen);
end = get_cycles();
if (ret)
goto out;
cycles += end - start;
}
out:
local_irq_enable();
local_bh_enable();
if (ret == 0)
printk("1 operation in %lu cycles (%d bytes)\n",
(cycles + 4) / 8, blen);
return ret;
}
static void test_cipher_speed(char *algo, int enc, unsigned int sec,
struct cipher_testvec *template,
unsigned int tcount, struct cipher_speed *speed)
{
unsigned int ret, i, j, iv_len;
unsigned char *key, *p, iv[128];
struct crypto_blkcipher *tfm;
struct blkcipher_desc desc;
const char *e;
if (enc == ENCRYPT)
e = "encryption";
else
e = "decryption";
printk("\ntesting speed of %s %s\n", algo, e);
tfm = crypto_alloc_blkcipher(algo, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
printk("failed to load transform for %s: %ld\n", algo,
PTR_ERR(tfm));
return;
}
desc.tfm = tfm;
desc.flags = 0;
for (i = 0; speed[i].klen != 0; i++) {
if ((speed[i].blen + speed[i].klen) > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n",
speed[i].blen + speed[i].klen, TVMEMSIZE);
goto out;
}
printk("test %u (%d bit key, %d byte blocks): ", i,
speed[i].klen * 8, speed[i].blen);
memset(tvmem, 0xff, speed[i].klen + speed[i].blen);
/* set key, plain text and IV */
key = (unsigned char *)tvmem;
for (j = 0; j < tcount; j++) {
if (template[j].klen == speed[i].klen) {
key = template[j].key;
break;
}
}
p = (unsigned char *)tvmem + speed[i].klen;
ret = crypto_blkcipher_setkey(tfm, key, speed[i].klen);
if (ret) {
printk("setkey() failed flags=%x\n",
crypto_blkcipher_get_flags(tfm));
goto out;
}
iv_len = crypto_blkcipher_ivsize(tfm);
if (iv_len) {
memset(&iv, 0xff, iv_len);
crypto_blkcipher_set_iv(tfm, iv, iv_len);
}
if (sec)
ret = test_cipher_jiffies(&desc, enc, p, speed[i].blen,
sec);
else
ret = test_cipher_cycles(&desc, enc, p, speed[i].blen);
if (ret) {
printk("%s() failed flags=%x\n", e, desc.flags);
break;
}
}
out:
crypto_free_blkcipher(tfm);
}
static int test_hash_jiffies_digest(struct hash_desc *desc, char *p, int blen,
char *out, int sec)
{
struct scatterlist sg[1];
unsigned long start, end;
int bcount;
int ret;
sg_init_table(sg, 1);
for (start = jiffies, end = start + sec * HZ, bcount = 0;
time_before(jiffies, end); bcount++) {
sg_set_buf(sg, p, blen);
ret = crypto_hash_digest(desc, sg, blen, out);
if (ret)
return ret;
}
printk("%6u opers/sec, %9lu bytes/sec\n",
bcount / sec, ((long)bcount * blen) / sec);
return 0;
}
static int test_hash_jiffies(struct hash_desc *desc, char *p, int blen,
int plen, char *out, int sec)
{
struct scatterlist sg[1];
unsigned long start, end;
int bcount, pcount;
int ret;
if (plen == blen)
return test_hash_jiffies_digest(desc, p, blen, out, sec);
sg_init_table(sg, 1);
for (start = jiffies, end = start + sec * HZ, bcount = 0;
time_before(jiffies, end); bcount++) {
ret = crypto_hash_init(desc);
if (ret)
return ret;
for (pcount = 0; pcount < blen; pcount += plen) {
sg_set_buf(sg, p + pcount, plen);
ret = crypto_hash_update(desc, sg, plen);
if (ret)
return ret;
}
/* we assume there is enough space in 'out' for the result */
ret = crypto_hash_final(desc, out);
if (ret)
return ret;
}
printk("%6u opers/sec, %9lu bytes/sec\n",
bcount / sec, ((long)bcount * blen) / sec);
return 0;
}
static int test_hash_cycles_digest(struct hash_desc *desc, char *p, int blen,
char *out)
{
struct scatterlist sg[1];
unsigned long cycles = 0;
int i;
int ret;
sg_init_table(sg, 1);
local_bh_disable();
local_irq_disable();
/* Warm-up run. */
for (i = 0; i < 4; i++) {
sg_set_buf(sg, p, blen);
ret = crypto_hash_digest(desc, sg, blen, out);
if (ret)
goto out;
}
/* The real thing. */
for (i = 0; i < 8; i++) {
cycles_t start, end;
start = get_cycles();
sg_set_buf(sg, p, blen);
ret = crypto_hash_digest(desc, sg, blen, out);
if (ret)
goto out;
end = get_cycles();
cycles += end - start;
}
out:
local_irq_enable();
local_bh_enable();
if (ret)
return ret;
printk("%6lu cycles/operation, %4lu cycles/byte\n",
cycles / 8, cycles / (8 * blen));
return 0;
}
static int test_hash_cycles(struct hash_desc *desc, char *p, int blen,
int plen, char *out)
{
struct scatterlist sg[1];
unsigned long cycles = 0;
int i, pcount;
int ret;
if (plen == blen)
return test_hash_cycles_digest(desc, p, blen, out);
sg_init_table(sg, 1);
local_bh_disable();
local_irq_disable();
/* Warm-up run. */
for (i = 0; i < 4; i++) {
ret = crypto_hash_init(desc);
if (ret)
goto out;
for (pcount = 0; pcount < blen; pcount += plen) {
sg_set_buf(sg, p + pcount, plen);
ret = crypto_hash_update(desc, sg, plen);
if (ret)
goto out;
}
ret = crypto_hash_final(desc, out);
if (ret)
goto out;
}
/* The real thing. */
for (i = 0; i < 8; i++) {
cycles_t start, end;
start = get_cycles();
ret = crypto_hash_init(desc);
if (ret)
goto out;
for (pcount = 0; pcount < blen; pcount += plen) {
sg_set_buf(sg, p + pcount, plen);
ret = crypto_hash_update(desc, sg, plen);
if (ret)
goto out;
}
ret = crypto_hash_final(desc, out);
if (ret)
goto out;
end = get_cycles();
cycles += end - start;
}
out:
local_irq_enable();
local_bh_enable();
if (ret)
return ret;
printk("%6lu cycles/operation, %4lu cycles/byte\n",
cycles / 8, cycles / (8 * blen));
return 0;
}
static void test_hash_speed(char *algo, unsigned int sec,
struct hash_speed *speed)
{
struct crypto_hash *tfm;
struct hash_desc desc;
char output[1024];
int i;
int ret;
printk("\ntesting speed of %s\n", algo);
tfm = crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm)) {
printk("failed to load transform for %s: %ld\n", algo,
PTR_ERR(tfm));
return;
}
desc.tfm = tfm;