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Date: Thu, 2 Jul 2015 10:48:40 +0530
From: Lokesh Vutla <lokeshvutla@...com>
To: <herbert@...dor.apana.org.au>, <linux-crypto@...r.kernel.org>,
<davem@...emloft.net>
CC: <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<t-kristo@...com>, <nsekhar@...com>, <lokeshvutla@...com>
Subject: [PATCH 10/10] crypto: tcrypt: Added speed tests for Async AEAD crypto alogrithms
Adding simple speed tests for a range of block sizes for Async AEAD crypto
algorithms.
Signed-off-by: Lokesh Vutla <lokeshvutla@...com>
---
crypto/tcrypt.c | 233 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
crypto/tcrypt.h | 1 +
2 files changed, 234 insertions(+)
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 1a28001..b37f3f4 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -992,6 +992,234 @@ out:
crypto_free_ahash(tfm);
}
+static inline int do_one_aead_op(struct aead_request *req, int ret)
+{
+ if (ret == -EINPROGRESS || ret == -EBUSY) {
+ struct tcrypt_result *tr = req->base.data;
+
+ ret = wait_for_completion_interruptible(&tr->completion);
+ if (!ret)
+ ret = tr->err;
+ reinit_completion(&tr->completion);
+ }
+
+ return ret;
+}
+
+static int test_aaead_jiffies(struct aead_request *req, int enc,
+ int blen, int sec)
+{
+ unsigned long start, end;
+ int bcount;
+ int ret;
+
+ for (start = jiffies, end = start + sec * HZ, bcount = 0;
+ time_before(jiffies, end); bcount++) {
+ if (enc)
+ ret = do_one_aead_op(req, crypto_aead_encrypt(req));
+ else
+ ret = do_one_aead_op(req, crypto_aead_decrypt(req));
+
+ if (ret)
+ return ret;
+ }
+
+ pr_cont("%d operations in %d seconds (%ld bytes)\n",
+ bcount, sec, (long)bcount * blen);
+ return 0;
+}
+
+static int test_aaead_cycles(struct aead_request *req, int enc, int blen)
+{
+ unsigned long cycles = 0;
+ int ret = 0;
+ int i;
+
+ /* Warm-up run. */
+ for (i = 0; i < 4; i++) {
+ if (enc)
+ ret = do_one_aead_op(req, crypto_aead_encrypt(req));
+ else
+ ret = do_one_aead_op(req, crypto_aead_decrypt(req));
+
+ if (ret)
+ goto out;
+ }
+
+ /* The real thing. */
+ for (i = 0; i < 8; i++) {
+ cycles_t start, end;
+
+ start = get_cycles();
+ if (enc)
+ ret = do_one_aead_op(req, crypto_aead_encrypt(req));
+ else
+ ret = do_one_aead_op(req, crypto_aead_decrypt(req));
+
+ end = get_cycles();
+
+ if (ret)
+ goto out;
+
+ cycles += end - start;
+ }
+
+out:
+ if (ret == 0)
+ pr_cont("1 operation in %lu cycles (%d bytes)\n",
+ (cycles + 4) / 8, blen);
+
+ return ret;
+}
+
+static void test_aaead_speed(const char *algo, int enc, unsigned int sec,
+ struct aead_speed_template *template,
+ unsigned int tcount, u8 authsize,
+ unsigned int aad_size, u8 *keysize)
+{
+ unsigned int i, j;
+ struct crypto_aead *tfm;
+ int ret = -ENOMEM;
+ const char *key;
+ struct aead_request *req;
+ struct scatterlist *sg;
+ struct scatterlist *asg;
+ struct scatterlist *sgout;
+ const char *e;
+ void *assoc;
+ char iv[MAX_IVLEN];
+ char *xbuf[XBUFSIZE];
+ char *xoutbuf[XBUFSIZE];
+ char *axbuf[XBUFSIZE];
+ unsigned int *b_size;
+ unsigned int iv_len;
+ struct tcrypt_result result;
+
+ if (enc == ENCRYPT)
+ e = "encryption";
+ else
+ e = "decryption";
+
+ if (testmgr_alloc_buf(xbuf))
+ goto out_noxbuf;
+ if (testmgr_alloc_buf(axbuf))
+ goto out_noaxbuf;
+ if (testmgr_alloc_buf(xoutbuf))
+ goto out_nooutbuf;
+
+ sg = kmalloc(sizeof(*sg) * 8 * 3, GFP_KERNEL);
+ if (!sg)
+ goto out_nosg;
+ asg = &sg[8];
+ sgout = &asg[8];
+
+ init_completion(&result.completion);
+ pr_info("\ntesting speed of %s %s\n", algo, e);
+
+ tfm = crypto_alloc_aead(algo, 0, 0);
+
+ if (IS_ERR(tfm)) {
+ pr_err("alg: aead: Failed to load transform for %s: %ld\n",
+ algo, PTR_ERR(tfm));
+ return;
+ }
+
+ req = aead_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ pr_err("alg: aead: Failed to allocate request for %s\n",
+ algo);
+ goto out;
+ }
+
+ aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &result);
+
+ i = 0;
+ do {
+ b_size = aead_sizes;
+ do {
+ assoc = axbuf[0];
+
+ if (aad_size < PAGE_SIZE) {
+ memset(assoc, 0xff, aad_size);
+ } else {
+ pr_err("associate data length (%u) too big\n",
+ aad_size);
+ goto out_nosg;
+ }
+ sg_init_one(&asg[0], assoc, aad_size);
+
+ if ((*keysize + *b_size) > TVMEMSIZE * PAGE_SIZE) {
+ pr_err("template (%u) too big for tvmem (%lu)\n",
+ *keysize + *b_size,
+ TVMEMSIZE * PAGE_SIZE);
+ goto out;
+ }
+
+ key = tvmem[0];
+ for (j = 0; j < tcount; j++) {
+ if (template[j].klen == *keysize) {
+ key = template[j].key;
+ break;
+ }
+ }
+ ret = crypto_aead_setkey(tfm, key, *keysize);
+ ret = crypto_aead_setauthsize(tfm, authsize);
+
+ iv_len = crypto_aead_ivsize(tfm);
+ if (iv_len)
+ memset(&iv, 0xff, iv_len);
+
+ crypto_aead_clear_flags(tfm, ~0);
+ pr_info("test %u (%d bit key, %d byte blocks): ",
+ i, *keysize * 8, *b_size);
+
+ memset(tvmem[0], 0xff, PAGE_SIZE);
+
+ if (ret) {
+ pr_err("setkey() failed flags=%x\n",
+ crypto_aead_get_flags(tfm));
+ goto out;
+ }
+
+ sg_init_aead(&sg[0], xbuf,
+ *b_size + (enc ? authsize : 0));
+
+ sg_init_aead(&sgout[0], xoutbuf,
+ *b_size + (enc ? authsize : 0));
+
+ aead_request_set_crypt(req, sg, sgout, *b_size, iv);
+ aead_request_set_assoc(req, asg, aad_size);
+
+ if (sec)
+ ret = test_aaead_jiffies(req, enc, *b_size,
+ sec);
+ else
+ ret = test_aaead_cycles(req, enc, *b_size);
+
+ if (ret) {
+ pr_err("%s() failed return code=%d\n", e, ret);
+ break;
+ }
+ b_size++;
+ i++;
+ } while (*b_size);
+ keysize++;
+ } while (*keysize);
+
+out:
+ crypto_free_aead(tfm);
+ kfree(sg);
+out_nosg:
+ testmgr_free_buf(xoutbuf);
+out_nooutbuf:
+ testmgr_free_buf(axbuf);
+out_noaxbuf:
+ testmgr_free_buf(xbuf);
+out_noxbuf:
+ return;
+}
+
static inline int do_one_acipher_op(struct ablkcipher_request *req, int ret)
{
if (ret == -EINPROGRESS || ret == -EBUSY) {
@@ -2139,6 +2367,11 @@ static int do_test(const char *alg, u32 type, u32 mask, int m)
speed_template_8_32);
break;
+ case 510:
+ test_aaead_speed("gcm(aes)", ENCRYPT, sec, NULL, 0, 16, 8,
+ aead_speed_template_16_24_32);
+ break;
+
case 1000:
test_available();
break;
diff --git a/crypto/tcrypt.h b/crypto/tcrypt.h
index 6c7e21a..9810edd 100644
--- a/crypto/tcrypt.h
+++ b/crypto/tcrypt.h
@@ -66,6 +66,7 @@ static u8 speed_template_32_64[] = {32, 64, 0};
* AEAD speed tests
*/
static u8 aead_speed_template_20[] = {20, 0};
+static u8 aead_speed_template_16_24_32[] = {16, 24, 32, 0};
/*
* Digest speed tests
--
1.7.9.5
--
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