netdev - [PATCH v2 net 5/8] selftest: tcp: Add v4-v4 and v6-v6 bind() conflict tests.

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Message-ID: <20240326204251.51301-6-kuniyu@amazon.com>
Date: Tue, 26 Mar 2024 13:42:48 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, David Ahern <dsahern@...nel.org>
CC: Joanne Koong <joannelkoong@...il.com>, Jianguo Wu <wujianguo106@....com>,
	Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
	<kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: [PATCH v2 net 5/8] selftest: tcp: Add v4-v4 and v6-v6 bind() conflict tests.

We don't have bind() conflict tests for the same protocol pairs.

Let's add them except for the same address pair, which will be
covered by the following patch adding 6 more bind() calls for
each test case.

Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
 tools/testing/selftests/net/bind_wildcard.c | 100 ++++++++++++++++++++
 1 file changed, 100 insertions(+)

diff --git a/tools/testing/selftests/net/bind_wildcard.c b/tools/testing/selftests/net/bind_wildcard.c
index 143aae383da3..5100dd713a49 100644
--- a/tools/testing/selftests/net/bind_wildcard.c
+++ b/tools/testing/selftests/net/bind_wildcard.c
@@ -42,6 +42,21 @@ FIXTURE_VARIANT(bind_wildcard)
 	int expected_errno;
 };
 
+/* (IPv4, IPv4) */
+FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v4_local)
+{
+	.family = {AF_INET, AF_INET},
+	.addr = {&in4addr_any, &in4addr_loopback},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v4_any)
+{
+	.family = {AF_INET, AF_INET},
+	.addr = {&in4addr_loopback, &in4addr_any},
+	.expected_errno = EADDRINUSE,
+};
+
 /* (IPv4, IPv6) */
 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_any)
 {
@@ -156,6 +171,91 @@ FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_local_v4_local)
 	.expected_errno = EADDRINUSE,
 };
 
+/* (IPv6, IPv6) */
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_any_v6_local)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_any, &in6addr_loopback},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_any_v6_v4mapped_any)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_any, &in6addr_v4mapped_any},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_any_v6_v4mapped_local)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_any, &in6addr_v4mapped_loopback},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_local_v6_any)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_loopback, &in6addr_any},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_local_v6_v4mapped_any)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_loopback, &in6addr_v4mapped_any},
+	.expected_errno = 0,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_local_v6_v4mapped_local)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_loopback, &in6addr_v4mapped_loopback},
+	.expected_errno = 0,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_any_v6_any)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_v4mapped_any, &in6addr_any},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_any_v6_local)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_v4mapped_any, &in6addr_loopback},
+	.expected_errno = 0,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_any_v6_v4mapped_local)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_v4mapped_any, &in6addr_v4mapped_loopback},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_loopback_v6_any)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_v4mapped_loopback, &in6addr_any},
+	.expected_errno = EADDRINUSE,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_loopback_v6_local)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_v4mapped_loopback, &in6addr_loopback},
+	.expected_errno = 0,
+};
+
+FIXTURE_VARIANT_ADD(bind_wildcard, v6_v4mapped_loopback_v6_v4mapped_any)
+{
+	.family = {AF_INET6, AF_INET6},
+	.addr = {&in6addr_v4mapped_loopback, &in6addr_v4mapped_any},
+	.expected_errno = EADDRINUSE,
+};
+
 static void setup_addr(FIXTURE_DATA(bind_wildcard) *self, int i,
 		       int family, const void *addr_const)
 {
-- 
2.30.2