[bionic:linux][PATCH] UBUNTU: SAUCE: selftests: net: replace AF_MAX with INT_MAX in socket.c

[Marcelo Henrique Cerri]

BugLink: https://bugs.launchpad.net/bugs/1842023

Use INT_MAX instead of AF_MAX, since libc might have a smaller value
of AF_MAX than the kernel, what causes the test to fail.

Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri at canonical.com>
---

Usually this issue will only occur with backport kernels (such as hwe)
since the glibc headers need to be older than the kernel for this test
to fail. Apply the fix to the generic kernel though so we can ensure
that all derivatives actually include it.

---
 tools/testing/selftests/net/socket.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/socket.c b/tools/testing/selftests/net/socket.c
index afca1ead677f..10e75ba90124 100644
--- a/tools/testing/selftests/net/socket.c
+++ b/tools/testing/selftests/net/socket.c
@@ -6,6 +6,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <limits.h>
 
 struct socket_testcase {
 	int	domain;
@@ -24,7 +25,10 @@ struct socket_testcase {
 };
 
 static struct socket_testcase tests[] = {
-	{ AF_MAX,  0,           0,           -EAFNOSUPPORT,    0 },
+	/* libc might have a smaller value of AF_MAX than the kernel
+	 * actually supports, so use INT_MAX instead.
+	 */
+	{ INT_MAX, 0,           0,           -EAFNOSUPPORT,    0  },
 	{ AF_INET, SOCK_STREAM, IPPROTO_TCP, 0,                1  },
 	{ AF_INET, SOCK_DGRAM,  IPPROTO_TCP, -EPROTONOSUPPORT, 1  },
 	{ AF_INET, SOCK_DGRAM,  IPPROTO_UDP, 0,                1  },
-- 
2.20.1