crypto: tcrypt - Allow speed testing of arbitrary hash functions

This patch allows the testing of arbitrary hash functions specified
by the alg module parameter by using them in mode 300 (for sync hash)
and mode 400 (for async hash).

For example, you could do
	modprobe tcrypt mode=300 alg='vmac(aes)'

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/tcrypt.c

@@ -1225,15 +1225,22 @@ static inline int tcrypt_test(const char *alg)
 	return ret;
 }
 
-static int do_test(int m)
+static int do_test(const char *alg, u32 type, u32 mask, int m)
 {
 	int i;
 	int ret = 0;
 
 	switch (m) {
 	case 0:
+		if (alg) {
+			if (!crypto_has_alg(alg, type,
+					    mask ?: CRYPTO_ALG_TYPE_MASK))
+				ret = -ENOENT;
+			break;
+		}
+
 		for (i = 1; i < 200; i++)
-			ret += do_test(i);
+			ret += do_test(NULL, 0, 0, i);
 		break;
 
 	case 1:
@@ -1752,6 +1759,11 @@ static int do_test(int m)
 		break;
 
 	case 300:
+		if (alg) {
+			test_hash_speed(alg, sec, generic_hash_speed_template);
+			break;
+		}
+
 		/* fall through */
 
 	case 301:
@@ -1838,6 +1850,11 @@ static int do_test(int m)
 		break;
 
 	case 400:
+		if (alg) {
+			test_ahash_speed(alg, sec, generic_hash_speed_template);
+			break;
+		}
+
 		/* fall through */
 
 	case 401:
@@ -2127,12 +2144,6 @@ static int do_test(int m)
 	return ret;
 }
 
-static int do_alg_test(const char *alg, u32 type, u32 mask)
-{
-	return crypto_has_alg(alg, type, mask ?: CRYPTO_ALG_TYPE_MASK) ?
-	       0 : -ENOENT;
-}
-
 static int __init tcrypt_mod_init(void)
 {
 	int err = -ENOMEM;
@@ -2144,10 +2155,7 @@ static int __init tcrypt_mod_init(void)
 			goto err_free_tv;
 	}
 
-	if (alg)
-		err = do_alg_test(alg, type, mask);
-	else
-		err = do_test(mode);
+	err = do_test(alg, type, mask, mode);
 
 	if (err) {
 		printk(KERN_ERR "tcrypt: one or more tests failed!\n");