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@queasysnail.net --- 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;