netdev - [PATCH net-next 2/2] selftests: tls: add a test for timeo vs lock

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Message-Id: <20220720203701.2179034-2-kuba@kernel.org>
Date:   Wed, 20 Jul 2022 13:37:01 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, edumazet@...gle.com, pabeni@...hat.com,
        borisp@...dia.com, john.fastabend@...il.com, maximmi@...dia.com,
        tariqt@...dia.com, vfedorenko@...ek.ru,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 2/2] selftests: tls: add a test for timeo vs lock

Add a test for recv timeout. Place it in the tls_err
group, so it only runs for TLS 1.2 and 1.3 but not
for every AEAD out there.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 tools/testing/selftests/net/tls.c | 32 +++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c
index 6ada4c28c188..2cbb12736596 100644
--- a/tools/testing/selftests/net/tls.c
+++ b/tools/testing/selftests/net/tls.c
@@ -1605,6 +1605,38 @@ TEST_F(tls_err, bad_cmsg)
 	EXPECT_EQ(errno, EBADMSG);
 }
 
+TEST_F(tls_err, timeo)
+{
+	struct timeval tv = { .tv_usec = 10000, };
+	char buf[128];
+	int ret;
+
+	if (self->notls)
+		SKIP(return, "no TLS support");
+
+	ret = setsockopt(self->cfd2, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
+	ASSERT_EQ(ret, 0);
+
+	ret = fork();
+	ASSERT_GE(ret, 0);
+
+	if (ret) {
+		usleep(1000); /* Give child a head start */
+
+		EXPECT_EQ(recv(self->cfd2, buf, sizeof(buf), 0), -1);
+		EXPECT_EQ(errno, EAGAIN);
+
+		EXPECT_EQ(recv(self->cfd2, buf, sizeof(buf), 0), -1);
+		EXPECT_EQ(errno, EAGAIN);
+
+		wait(&ret);
+	} else {
+		EXPECT_EQ(recv(self->cfd2, buf, sizeof(buf), 0), -1);
+		EXPECT_EQ(errno, EAGAIN);
+		exit(0);
+	}
+}
+
 TEST(non_established) {
 	struct tls12_crypto_info_aes_gcm_256 tls12;
 	struct sockaddr_in addr;
-- 
2.36.1