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>
This commit is contained in:
Tim Chen
Herbert Xu
parent
d764593af9
commit
53f52d7aec
270
crypto/tcrypt.c
270
crypto/tcrypt.c
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@ -137,7 +137,272 @@ out:
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return ret;
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}
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static int test_aead_jiffies(struct aead_request *req, int enc,
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int blen, int sec)
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{
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unsigned long start, end;
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int bcount;
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int ret;
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for (start = jiffies, end = start + sec * HZ, bcount = 0;
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time_before(jiffies, end); bcount++) {
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if (enc)
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ret = crypto_aead_encrypt(req);
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else
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ret = crypto_aead_decrypt(req);
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if (ret)
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return ret;
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}
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printk("%d operations in %d seconds (%ld bytes)\n",
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bcount, sec, (long)bcount * blen);
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return 0;
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}
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static int test_aead_cycles(struct aead_request *req, int enc, int blen)
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{
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unsigned long cycles = 0;
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int ret = 0;
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int i;
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local_irq_disable();
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/* Warm-up run. */
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for (i = 0; i < 4; i++) {
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if (enc)
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ret = crypto_aead_encrypt(req);
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else
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ret = crypto_aead_decrypt(req);
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if (ret)
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goto out;
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}
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/* The real thing. */
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for (i = 0; i < 8; i++) {
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cycles_t start, end;
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start = get_cycles();
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if (enc)
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ret = crypto_aead_encrypt(req);
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else
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ret = crypto_aead_decrypt(req);
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end = get_cycles();
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if (ret)
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goto out;
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cycles += end - start;
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}
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out:
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local_irq_enable();
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if (ret == 0)
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printk("1 operation in %lu cycles (%d bytes)\n",
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(cycles + 4) / 8, blen);
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return ret;
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}
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static u32 block_sizes[] = { 16, 64, 256, 1024, 8192, 0 };
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static u32 aead_sizes[] = { 16, 64, 256, 512, 1024, 2048, 4096, 8192, 0 };
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#define XBUFSIZE 8
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#define MAX_IVLEN 32
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static int testmgr_alloc_buf(char *buf[XBUFSIZE])
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{
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int i;
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for (i = 0; i < XBUFSIZE; i++) {
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buf[i] = (void *)__get_free_page(GFP_KERNEL);
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if (!buf[i])
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goto err_free_buf;
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}
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return 0;
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err_free_buf:
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while (i-- > 0)
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free_page((unsigned long)buf[i]);
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return -ENOMEM;
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}
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static void testmgr_free_buf(char *buf[XBUFSIZE])
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{
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int i;
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for (i = 0; i < XBUFSIZE; i++)
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free_page((unsigned long)buf[i]);
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}
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static void sg_init_aead(struct scatterlist *sg, char *xbuf[XBUFSIZE],
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unsigned int buflen)
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{
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int np = (buflen + PAGE_SIZE - 1)/PAGE_SIZE;
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int k, rem;
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np = (np > XBUFSIZE) ? XBUFSIZE : np;
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rem = buflen % PAGE_SIZE;
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if (np > XBUFSIZE) {
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rem = PAGE_SIZE;
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np = XBUFSIZE;
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}
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sg_init_table(sg, np);
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for (k = 0; k < np; ++k) {
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if (k == (np-1))
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sg_set_buf(&sg[k], xbuf[k], rem);
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else
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sg_set_buf(&sg[k], xbuf[k], PAGE_SIZE);
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}
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}
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static void test_aead_speed(const char *algo, int enc, unsigned int sec,
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struct aead_speed_template *template,
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unsigned int tcount, u8 authsize,
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unsigned int aad_size, u8 *keysize)
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{
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unsigned int i, j;
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struct crypto_aead *tfm;
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int ret = -ENOMEM;
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const char *key;
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struct aead_request *req;
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struct scatterlist *sg;
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struct scatterlist *asg;
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struct scatterlist *sgout;
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const char *e;
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void *assoc;
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char iv[MAX_IVLEN];
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char *xbuf[XBUFSIZE];
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char *xoutbuf[XBUFSIZE];
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char *axbuf[XBUFSIZE];
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unsigned int *b_size;
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unsigned int iv_len;
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if (enc == ENCRYPT)
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e = "encryption";
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else
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e = "decryption";
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if (testmgr_alloc_buf(xbuf))
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goto out_noxbuf;
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if (testmgr_alloc_buf(axbuf))
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goto out_noaxbuf;
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if (testmgr_alloc_buf(xoutbuf))
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goto out_nooutbuf;
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sg = kmalloc(sizeof(*sg) * 8 * 3, GFP_KERNEL);
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if (!sg)
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goto out_nosg;
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asg = &sg[8];
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sgout = &asg[8];
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printk(KERN_INFO "\ntesting speed of %s %s\n", algo, e);
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tfm = crypto_alloc_aead(algo, 0, 0);
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if (IS_ERR(tfm)) {
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pr_err("alg: aead: Failed to load transform for %s: %ld\n", algo,
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PTR_ERR(tfm));
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return;
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}
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req = aead_request_alloc(tfm, GFP_KERNEL);
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if (!req) {
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pr_err("alg: aead: Failed to allocate request for %s\n",
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algo);
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goto out;
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}
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i = 0;
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do {
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b_size = aead_sizes;
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do {
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assoc = axbuf[0];
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if (aad_size < PAGE_SIZE)
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memset(assoc, 0xff, aad_size);
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else {
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pr_err("associate data length (%u) too big\n",
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aad_size);
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goto out_nosg;
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}
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sg_init_one(&asg[0], assoc, aad_size);
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if ((*keysize + *b_size) > TVMEMSIZE * PAGE_SIZE) {
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pr_err("template (%u) too big for tvmem (%lu)\n",
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*keysize + *b_size,
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TVMEMSIZE * PAGE_SIZE);
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goto out;
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}
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key = tvmem[0];
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for (j = 0; j < tcount; j++) {
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if (template[j].klen == *keysize) {
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key = template[j].key;
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break;
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}
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}
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ret = crypto_aead_setkey(tfm, key, *keysize);
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ret = crypto_aead_setauthsize(tfm, authsize);
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iv_len = crypto_aead_ivsize(tfm);
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if (iv_len)
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memset(&iv, 0xff, iv_len);
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crypto_aead_clear_flags(tfm, ~0);
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printk(KERN_INFO "test %u (%d bit key, %d byte blocks): ",
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i, *keysize * 8, *b_size);
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memset(tvmem[0], 0xff, PAGE_SIZE);
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if (ret) {
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pr_err("setkey() failed flags=%x\n",
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crypto_aead_get_flags(tfm));
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goto out;
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}
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sg_init_aead(&sg[0], xbuf,
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*b_size + (enc ? authsize : 0));
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sg_init_aead(&sgout[0], xoutbuf,
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*b_size + (enc ? authsize : 0));
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aead_request_set_crypt(req, sg, sgout, *b_size, iv);
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aead_request_set_assoc(req, asg, aad_size);
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if (sec)
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ret = test_aead_jiffies(req, enc, *b_size, sec);
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else
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ret = test_aead_cycles(req, enc, *b_size);
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if (ret) {
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pr_err("%s() failed return code=%d\n", e, ret);
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break;
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}
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b_size++;
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i++;
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} while (*b_size);
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keysize++;
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} while (*keysize);
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out:
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crypto_free_aead(tfm);
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kfree(sg);
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out_nosg:
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testmgr_free_buf(xoutbuf);
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out_nooutbuf:
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testmgr_free_buf(axbuf);
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out_noaxbuf:
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testmgr_free_buf(xbuf);
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out_noxbuf:
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return;
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}
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static void test_cipher_speed(const char *algo, int enc, unsigned int sec,
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struct cipher_speed_template *template,
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@ -1427,6 +1692,11 @@ static int do_test(int m)
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speed_template_32_64);
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break;
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case 211:
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test_aead_speed("rfc4106(gcm(aes))", ENCRYPT, sec,
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NULL, 0, 16, 8, aead_speed_template_20);
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break;
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case 300:
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/* fall through */
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@ -22,6 +22,11 @@ struct cipher_speed_template {
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unsigned int klen;
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};
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struct aead_speed_template {
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const char *key;
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unsigned int klen;
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};
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struct hash_speed {
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unsigned int blen; /* buffer length */
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unsigned int plen; /* per-update length */
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@ -57,6 +62,11 @@ static u8 speed_template_32_48[] = {32, 48, 0};
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static u8 speed_template_32_48_64[] = {32, 48, 64, 0};
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static u8 speed_template_32_64[] = {32, 64, 0};
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/*
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* AEAD speed tests
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*/
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static u8 aead_speed_template_20[] = {20, 0};
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/*
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* Digest speed tests
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*/
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