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Date: Thu, 23 Jun 2016 18:40:47 -0700
From: Megha Dey <megha.dey@...el.com>
To: herbert@...dor.apana.org.au
Cc: tim.c.chen@...ux.intel.com, davem@...emloft.net,
linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
megha.dey@...el.com, fenghua.yu@...el.com,
Megha Dey <megha.dey@...ux.intel.com>
Subject: [PATCH 6/7] crypto: tcrypt - Add speed tests for SHA multibuffer algorithms
From: Megha Dey <megha.dey@...ux.intel.com>
The existing test suite to calculate the speed of the SHA algorithms
assumes serial (single buffer)) computation of data. With the SHA
multibuffer algorithms, we work on 8 lanes of data in parallel. Hence,
the need to introduce a new test suite to calculate the speed for these
algorithms.
Signed-off-by: Megha Dey <megha.dey@...ux.intel.com>
---
crypto/tcrypt.c | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 118 insertions(+)
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 4675459..6ef7815 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -578,6 +578,117 @@ static inline int do_one_ahash_op(struct ahash_request *req, int ret)
return ret;
}
+char ptext[4096];
+struct scatterlist sg[8][8];
+char result[8][64];
+struct ahash_request *req[8];
+struct tcrypt_result tresult[8];
+char *xbuf[8][XBUFSIZE];
+cycles_t start[8], end[8], mid;
+
+static void test_mb_ahash_speed(const char *algo, unsigned int sec,
+ struct hash_speed *speed)
+{
+ unsigned int i, j, k;
+ void *hash_buff;
+ int ret = -ENOMEM;
+ struct crypto_ahash *tfm;
+
+ tfm = crypto_alloc_ahash(algo, 0, 0);
+ if (IS_ERR(tfm)) {
+ pr_err("failed to load transform for %s: %ld\n",
+ algo, PTR_ERR(tfm));
+ return;
+ }
+ for (i = 0; i < 8; ++i) {
+ if (testmgr_alloc_buf(xbuf[i]))
+ goto out_nobuf;
+
+ init_completion(&tresult[i].completion);
+
+ req[i] = ahash_request_alloc(tfm, GFP_KERNEL);
+ if (!req[i]) {
+ printk(KERN_ERR "alg: hash: Failed to allocate "
+ "request for %s\n", algo);
+ goto out_noreq;
+ }
+ ahash_request_set_callback(req[i], CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &tresult[i]);
+
+ hash_buff = xbuf[i][0];
+ memcpy(hash_buff, ptext, 4096);
+ }
+
+ j = 0;
+
+ printk(KERN_INFO "\ntesting speed of %s (%s)\n", algo,
+ get_driver_name(crypto_ahash, tfm));
+
+ for (i = 0; speed[i].blen != 0; i++) {
+ if (speed[i].blen > TVMEMSIZE * PAGE_SIZE) {
+ printk(KERN_ERR
+ "template (%u) too big for tvmem (%lu)\n",
+ speed[i].blen, TVMEMSIZE * PAGE_SIZE);
+ goto out;
+ }
+
+ if (speed[i].klen)
+ crypto_ahash_setkey(tfm, tvmem[0], speed[i].klen);
+
+ for (k = 0; k < 8; ++k) {
+ sg_init_one(&sg[k][0], (void *) xbuf[k][0],
+ speed[i].blen);
+ ahash_request_set_crypt(req[k], sg[k],
+ result[k], speed[i].blen);
+ }
+
+ printk(KERN_INFO "test%3u "
+ "(%5u byte blocks,%5u bytes per update,%4u updates): ",
+ i, speed[i].blen, speed[i].plen,
+ speed[i].blen / speed[i].plen);
+
+ for (k = 0; k < 8; ++k) {
+ start[k] = get_cycles();
+ ret = crypto_ahash_digest(req[k]);
+ if (ret == -EBUSY || ret == -EINPROGRESS)
+ continue;
+ if (ret) {
+ printk(KERN_ERR
+ "alg (%s) something wrong, ret = %d ...\n",
+ algo, ret);
+ goto out;
+ }
+ }
+ mid = get_cycles();
+
+ for (k = 0; k < 8; ++k) {
+ struct tcrypt_result *tr = &tresult[k];
+
+ ret = wait_for_completion_interruptible
+ (&tr->completion);
+ if (ret)
+ printk(KERN_ERR
+ "alg(%s): hash: digest failed\n", algo);
+ end[k] = get_cycles();
+ }
+
+ printk("\nBlock: %lld cycles (%lld cycles/byte), %d bytes\n",
+ (s64) (end[7]-start[0])/1,
+ (s64) (end[7]-start[0])/(8*speed[i].blen),
+ 8*speed[i].blen);
+ }
+ ret = 0;
+
+out:
+ for (k = 0; k < 8; ++k)
+ ahash_request_free(req[k]);
+out_noreq:
+ for (k = 0; k < 8; ++k)
+ testmgr_free_buf(xbuf[k]);
+out_nobuf:
+ return;
+}
+
static int test_ahash_jiffies_digest(struct ahash_request *req, int blen,
char *out, int secs)
{
@@ -1820,6 +1931,13 @@ static int do_test(const char *alg, u32 type, u32 mask, int m)
test_ahash_speed("sha3-512", sec, generic_hash_speed_template);
if (mode > 400 && mode < 500) break;
+ case 422:
+ test_mb_ahash_speed("sha1", sec, generic_hash_speed_template);
+ if (mode > 400 && mode < 500) break;
+
+ case 423:
+ test_mb_ahash_speed("sha256", sec, generic_hash_speed_template);
+ if (mode > 400 && mode < 500) break;
case 499:
break;
--
1.9.1
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