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authorMagali Lemes <magali.lemes@canonical.com>2023-06-13 09:32:20 -0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-06-28 11:12:29 +0200
commit6919634176cd1c8df18777bbeb1d1b934f891562 (patch)
tree8f10ec9696e5b42ba47b79de036fa1585512c250 /tools
parentac5671d10060176091c38f602181144061f3be47 (diff)
downloadlinux-6919634176cd1c8df18777bbeb1d1b934f891562.tar.gz
selftests: net: tls: check if FIPS mode is enabled
[ Upstream commit d113c395c67b62fc0d3f2004c0afc406aca0a2b7 ]

TLS selftests use the ChaCha20-Poly1305 and SM4 algorithms, which are not
FIPS compliant. When fips=1, this set of tests fails. Add a check and only
run these tests if not in FIPS mode.

Fixes: 4f336e88a870 ("selftests/tls: add CHACHA20-POLY1305 to tls selftests")
Fixes: e506342a03c7 ("selftests/tls: add SM4 GCM/CCM to tls selftests")
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Magali Lemes <magali.lemes@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/net/tls.c24
1 files changed, 23 insertions, 1 deletions
diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c
index 2cbb12736596..c0ad8385441f 100644
--- a/tools/testing/selftests/net/tls.c
+++ b/tools/testing/selftests/net/tls.c
@@ -25,6 +25,8 @@
 #define TLS_PAYLOAD_MAX_LEN 16384
 #define SOL_TLS 282
 
+static int fips_enabled;
+
 struct tls_crypto_info_keys {
 	union {
 		struct tls12_crypto_info_aes_gcm_128 aes128;
@@ -235,7 +237,7 @@ FIXTURE_VARIANT(tls)
 {
 	uint16_t tls_version;
 	uint16_t cipher_type;
-	bool nopad;
+	bool nopad, fips_non_compliant;
 };
 
 FIXTURE_VARIANT_ADD(tls, 12_aes_gcm)
@@ -254,24 +256,28 @@ FIXTURE_VARIANT_ADD(tls, 12_chacha)
 {
 	.tls_version = TLS_1_2_VERSION,
 	.cipher_type = TLS_CIPHER_CHACHA20_POLY1305,
+	.fips_non_compliant = true,
 };
 
 FIXTURE_VARIANT_ADD(tls, 13_chacha)
 {
 	.tls_version = TLS_1_3_VERSION,
 	.cipher_type = TLS_CIPHER_CHACHA20_POLY1305,
+	.fips_non_compliant = true,
 };
 
 FIXTURE_VARIANT_ADD(tls, 13_sm4_gcm)
 {
 	.tls_version = TLS_1_3_VERSION,
 	.cipher_type = TLS_CIPHER_SM4_GCM,
+	.fips_non_compliant = true,
 };
 
 FIXTURE_VARIANT_ADD(tls, 13_sm4_ccm)
 {
 	.tls_version = TLS_1_3_VERSION,
 	.cipher_type = TLS_CIPHER_SM4_CCM,
+	.fips_non_compliant = true,
 };
 
 FIXTURE_VARIANT_ADD(tls, 12_aes_ccm)
@@ -311,6 +317,9 @@ FIXTURE_SETUP(tls)
 	int one = 1;
 	int ret;
 
+	if (fips_enabled && variant->fips_non_compliant)
+		SKIP(return, "Unsupported cipher in FIPS mode");
+
 	tls_crypto_info_init(variant->tls_version, variant->cipher_type,
 			     &tls12);
 
@@ -1820,4 +1829,17 @@ TEST(tls_v6ops) {
 	close(sfd);
 }
 
+static void __attribute__((constructor)) fips_check(void) {
+	int res;
+	FILE *f;
+
+	f = fopen("/proc/sys/crypto/fips_enabled", "r");
+	if (f) {
+		res = fscanf(f, "%d", &fips_enabled);
+		if (res != 1)
+			ksft_print_msg("ERROR: Couldn't read /proc/sys/crypto/fips_enabled\n");
+		fclose(f);
+	}
+}
+
 TEST_HARNESS_MAIN