crypto: tcrypt - Added speed tests for AEAD crypto alogrithms in tcrypt test suite

Adding simple speed tests for a range of block sizes for AEAD crypto
algorithms.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 280 insertions, 0 deletions

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 001f07cdb828..0d9003ae8c61 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -137,7 +137,272 @@ out:
         return ret;
 }
 
+static int test_aead_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 = crypto_aead_encrypt(req);
+                else
+                        ret = crypto_aead_decrypt(req);
+
+                if (ret)
+                        return ret;
+        }
+
+        printk("%d operations in %d seconds (%ld bytes)\n",
+               bcount, sec, (long)bcount * blen);
+        return 0;
+}
+
+static int test_aead_cycles(struct aead_request *req, int enc, int blen)
+{
+        unsigned long cycles = 0;
+        int ret = 0;
+        int i;
+
+        local_irq_disable();
+
+        /* Warm-up run. */
+        for (i = 0; i < 4; i++) {
+                if (enc)
+                        ret = crypto_aead_encrypt(req);
+                else
+                        ret = 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 = crypto_aead_encrypt(req);
+                else
+                        ret = crypto_aead_decrypt(req);
+                end = get_cycles();
+
+                if (ret)
+                        goto out;
+
+                cycles += end - start;
+        }
+
+out:
+        local_irq_enable();
+
+        if (ret == 0)
+                printk("1 operation in %lu cycles (%d bytes)\n",
+                       (cycles + 4) / 8, blen);
+
+        return ret;
+}
+
 static u32 block_sizes[] = { 16, 64, 256, 1024, 8192, 0 };
+static u32 aead_sizes[] = { 16, 64, 256, 512, 1024, 2048, 4096, 8192, 0 };
+
+#define XBUFSIZE 8
+#define MAX_IVLEN 32
+
+static int testmgr_alloc_buf(char *buf[XBUFSIZE])
+{
+        int i;
+
+        for (i = 0; i < XBUFSIZE; i++) {
+                buf[i] = (void *)__get_free_page(GFP_KERNEL);
+                if (!buf[i])
+                        goto err_free_buf;
+        }
+
+        return 0;
+
+err_free_buf:
+        while (i-- > 0)
+                free_page((unsigned long)buf[i]);
+
+        return -ENOMEM;
+}
+
+static void testmgr_free_buf(char *buf[XBUFSIZE])
+{
+        int i;
+
+        for (i = 0; i < XBUFSIZE; i++)
+                free_page((unsigned long)buf[i]);
+}
+
+static void sg_init_aead(struct scatterlist *sg, char *xbuf[XBUFSIZE],
+                        unsigned int buflen)
+{
+        int np = (buflen + PAGE_SIZE - 1)/PAGE_SIZE;
+        int k, rem;
+
+        np = (np > XBUFSIZE) ? XBUFSIZE : np;
+        rem = buflen % PAGE_SIZE;
+        if (np > XBUFSIZE) {
+                rem = PAGE_SIZE;
+                np = XBUFSIZE;
+        }
+        sg_init_table(sg, np);
+        for (k = 0; k < np; ++k) {
+                if (k == (np-1))
+                        sg_set_buf(&sg[k], xbuf[k], rem);
+                else
+                        sg_set_buf(&sg[k], xbuf[k], PAGE_SIZE);
+        }
+}
+
+static void test_aead_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;
+
+        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];
+
+
+        printk(KERN_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;
+        }
+
+        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);
+                        printk(KERN_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_aead_jiffies(req, enc, *b_size, sec);
+                        else
+                                ret = test_aead_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 void test_cipher_speed(const char *algo, int enc, unsigned int sec,
                               struct cipher_speed_template *template,
@@ -1427,6 +1692,11 @@ static int do_test(int m)
                                   speed_template_32_64);
                 break;
 
+        case 211:
+                test_aead_speed("rfc4106(gcm(aes))", ENCRYPT, sec,
+                                NULL, 0, 16, 8, aead_speed_template_20);
+                break;
+
         case 300:
                 /* fall through */
 
diff --git a/crypto/tcrypt.h b/crypto/tcrypt.h
index ecdeeb1a7b05..6c7e21a09f78 100644
--- a/crypto/tcrypt.h
+++ b/crypto/tcrypt.h
@@ -22,6 +22,11 @@ struct cipher_speed_template {
         unsigned int klen;
 };
 
+struct aead_speed_template {
+        const char *key;
+        unsigned int klen;
+};
+
 struct hash_speed {
         unsigned int blen;      /* buffer length */
         unsigned int plen;      /* per-update length */
@@ -58,6 +63,11 @@ static u8 speed_template_32_48_64[] = {32, 48, 64, 0};
 static u8 speed_template_32_64[] = {32, 64, 0};
 
 /*
+ * AEAD speed tests
+ */
+static u8 aead_speed_template_20[] = {20, 0};
+
+/*
  * Digest speed tests
  */
 static struct hash_speed generic_hash_speed_template[] = {