The kernel accepts fetching either just the version and cipher type,
or exactly the per-cipher struct. Also check that getsockopt returns
what we just passed to the kernel.
Signed-off-by: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
---
tools/testing/selftests/net/tls.c | 35 +++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c
index 95bef2be48cd..0da6952a047a 100644
--- a/tools/testing/selftests/net/tls.c
+++ b/tools/testing/selftests/net/tls.c
@@ -30,6 +30,7 @@ static int fips_enabled;
struct tls_crypto_info_keys {
union {
+ struct tls_crypto_info crypto_info;
struct tls12_crypto_info_aes_gcm_128 aes128;
struct tls12_crypto_info_chacha20_poly1305 chacha20;
struct tls12_crypto_info_sm4_gcm sm4gcm;
@@ -1496,6 +1497,40 @@ TEST_F(tls, shutdown_reuse)
EXPECT_EQ(errno, EISCONN);
}
+TEST_F(tls, getsockopt)
+{
+ struct tls_crypto_info_keys expect, get;
+ socklen_t len;
+
+ /* get only the version/cipher */
+ len = sizeof(struct tls_crypto_info);
+ memrnd(&get, sizeof(get));
+ EXPECT_EQ(getsockopt(self->fd, SOL_TLS, TLS_TX, &get, &len), 0);
+ EXPECT_EQ(len, sizeof(struct tls_crypto_info));
+ EXPECT_EQ(get.crypto_info.version, variant->tls_version);
+ EXPECT_EQ(get.crypto_info.cipher_type, variant->cipher_type);
+
+ /* get the full crypto_info */
+ tls_crypto_info_init(variant->tls_version, variant->cipher_type, &expect);
+ len = expect.len;
+ memrnd(&get, sizeof(get));
+ EXPECT_EQ(getsockopt(self->fd, SOL_TLS, TLS_TX, &get, &len), 0);
+ EXPECT_EQ(len, expect.len);
+ EXPECT_EQ(get.crypto_info.version, variant->tls_version);
+ EXPECT_EQ(get.crypto_info.cipher_type, variant->cipher_type);
+ EXPECT_EQ(memcmp(&get, &expect, expect.len), 0);
+
+ /* short get should fail */
+ len = sizeof(struct tls_crypto_info) - 1;
+ EXPECT_EQ(getsockopt(self->fd, SOL_TLS, TLS_TX, &get, &len), -1);
+ EXPECT_EQ(errno, EINVAL);
+
+ /* partial get of the cipher data should fail */
+ len = expect.len - 1;
+ EXPECT_EQ(getsockopt(self->fd, SOL_TLS, TLS_TX, &get, &len), -1);
+ EXPECT_EQ(errno, EINVAL);
+}
+
FIXTURE(tls_err)
{
int fd, cfd;
--
2.40.1
