linux-kernel - [66/67] crypto: testmgr - add an option to disable cryptoalgos self-tests

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Message-Id: <20100812000618.764932351@clark.site>
Date:	Wed, 11 Aug 2010 17:06:21 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Alexander Shishkin <virtuoso@...nd.org>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: [66/67] crypto: testmgr - add an option to disable cryptoalgos self-tests

2.6.35-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alexander Shishkin <virtuoso@...nd.org>

commit 0b767f96164b2b27488e3daa722ff16e89d49314 upstream.

By default, CONFIG_CRYPTO_MANAGER_TESTS will be enabled and thus
self-tests will still run, but it is now possible to disable them
to gain some time during bootup.

Signed-off-by: Alexander Shishkin <virtuoso@...nd.org>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 crypto/Kconfig   |    8 ++++++++
 crypto/algboss.c |    4 ++++
 crypto/testmgr.c |   14 ++++++++++++++
 3 files changed, 26 insertions(+)

--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -96,6 +96,14 @@ config CRYPTO_MANAGER2
 	select CRYPTO_BLKCIPHER2
 	select CRYPTO_PCOMP
 
+config CRYPTO_MANAGER_TESTS
+	bool "Run algolithms' self-tests"
+	default y
+	depends on CRYPTO_MANAGER2
+	help
+	  Run cryptomanager's tests for the new crypto algorithms being
+	  registered.
+
 config CRYPTO_GF128MUL
 	tristate "GF(2^128) multiplication functions (EXPERIMENTAL)"
 	depends on EXPERIMENTAL
--- a/crypto/algboss.c
+++ b/crypto/algboss.c
@@ -206,6 +206,7 @@ err:
 	return NOTIFY_OK;
 }
 
+#ifdef CONFIG_CRYPTO_MANAGER_TESTS
 static int cryptomgr_test(void *data)
 {
 	struct crypto_test_param *param = data;
@@ -266,6 +267,7 @@ err_put_module:
 err:
 	return NOTIFY_OK;
 }
+#endif /* CONFIG_CRYPTO_MANAGER_TESTS */
 
 static int cryptomgr_notify(struct notifier_block *this, unsigned long msg,
 			    void *data)
@@ -273,8 +275,10 @@ static int cryptomgr_notify(struct notif
 	switch (msg) {
 	case CRYPTO_MSG_ALG_REQUEST:
 		return cryptomgr_schedule_probe(data);
+#ifdef CONFIG_CRYPTO_MANAGER_TESTS
 	case CRYPTO_MSG_ALG_REGISTER:
 		return cryptomgr_schedule_test(data);
+#endif
 	}
 
 	return NOTIFY_DONE;
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -22,6 +22,17 @@
 #include <crypto/rng.h>
 
 #include "internal.h"
+
+#ifndef CONFIG_CRYPTO_MANAGER_TESTS
+
+/* a perfect nop */
+int alg_test(const char *driver, const char *alg, u32 type, u32 mask)
+{
+	return 0;
+}
+
+#else
+
 #include "testmgr.h"
 
 /*
@@ -2530,4 +2541,7 @@ notest:
 non_fips_alg:
 	return -EINVAL;
 }
+
+#endif /* CONFIG_CRYPTO_MANAGER_TESTS */
+
 EXPORT_SYMBOL_GPL(alg_test);


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