kernel: prevent cryptomgr from pulling in useless extra dependencies for tests that are not run

Reduces kernel size after LZMA by about 5k on MIPS

lede-commit: 044c316167e076479a344c59905e5b435b84a77f
Signed-off-by: Felix Fietkau <nbd@nbd.name>

crypto/Kconfig

@@ -132,12 +132,12 @@ config CRYPTO_MANAGER
 	  cbc(aes).
 
 config CRYPTO_MANAGER2
-	def_tristate CRYPTO_MANAGER || (CRYPTO_MANAGER!=n && CRYPTO_ALGAPI=y)
-	select CRYPTO_AEAD2
-	select CRYPTO_HASH2
-	select CRYPTO_BLKCIPHER2
-	select CRYPTO_AKCIPHER2
-	select CRYPTO_KPP2
+	def_tristate CRYPTO_MANAGER || (CRYPTO_MANAGER!=n && CRYPTO_ALGAPI=y && !CRYPTO_MANAGER_DISABLE_TESTS)
+	select CRYPTO_AEAD2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_HASH2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_BLKCIPHER2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_AKCIPHER2 if !CRYPTO_MANAGER_DISABLE_TESTS
+	select CRYPTO_KPP2 if !CRYPTO_MANAGER_DISABLE_TESTS
 
 config CRYPTO_USER
 	tristate "Userspace cryptographic algorithm configuration"
@@ -150,7 +150,6 @@ config CRYPTO_USER
 config CRYPTO_MANAGER_DISABLE_TESTS
 	bool "Disable run-time self tests"
 	default y
-	depends on CRYPTO_MANAGER2
 	help
 	  Disable run-time self tests that normally take place at
 	  algorithm registration.

crypto/algboss.c

@@ -248,12 +248,16 @@ static int cryptomgr_schedule_test(struct crypto_alg *alg)
 	type = alg->cra_flags;
 
 	/* This piece of crap needs to disappear into per-type test hooks. */
+#ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
+	type |= CRYPTO_ALG_TESTED;
+#else
 	if (!((type ^ CRYPTO_ALG_TYPE_BLKCIPHER) &
 	      CRYPTO_ALG_TYPE_BLKCIPHER_MASK) && !(type & CRYPTO_ALG_GENIV) &&
 	    ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) ==
 	     CRYPTO_ALG_TYPE_BLKCIPHER ? alg->cra_blkcipher.ivsize :
 					 alg->cra_ablkcipher.ivsize))
 		type |= CRYPTO_ALG_TESTED;
+#endif
 
 	param->type = type;