[PATCH v1 06/10] selftests/net: Define _GNU_SOURCE

[Edward Liaw <edliaw@xxxxxxxxxx>]

809216233555 ("selftests/harness: remove use of LINE_MAX") introduced
asprintf into kselftest_harness.h, which is a GNU extension and needs
_GNU_SOURCE to either be defined prior to including headers or with the
-D_GNU_SOURCE flag passed to the compiler.

Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX")
Signed-off-by: Edward Liaw <edliaw@xxxxxxxxxx>
---
 tools/testing/selftests/net/bind_wildcard.c             | 1 +
 tools/testing/selftests/net/ip_local_port_range.c       | 1 +
 tools/testing/selftests/net/reuseaddr_ports_exhausted.c | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/tools/testing/selftests/net/bind_wildcard.c b/tools/testing/selftests/net/bind_wildcard.c
index b7b54d646b93..be0773cbc15b 100644
--- a/tools/testing/selftests/net/bind_wildcard.c
+++ b/tools/testing/selftests/net/bind_wildcard.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright Amazon.com Inc. or its affiliates. */
+#define _GNU_SOURCE

 #include <sys/socket.h>
 #include <netinet/in.h>
diff --git a/tools/testing/selftests/net/ip_local_port_range.c b/tools/testing/selftests/net/ip_local_port_range.c
index 193b82745fd8..08fbd3449ffa 100644
--- a/tools/testing/selftests/net/ip_local_port_range.c
+++ b/tools/testing/selftests/net/ip_local_port_range.c
@@ -6,6 +6,7 @@
  * Tests assume that net.ipv4.ip_local_port_range is [40000, 49999].
  * Don't run these directly but with ip_local_port_range.sh script.
  */
+#define _GNU_SOURCE

 #include <fcntl.h>
 #include <netinet/ip.h>
diff --git a/tools/testing/selftests/net/reuseaddr_ports_exhausted.c b/tools/testing/selftests/net/reuseaddr_ports_exhausted.c
index 066efd30e294..a5c40528837f 100644
--- a/tools/testing/selftests/net/reuseaddr_ports_exhausted.c
+++ b/tools/testing/selftests/net/reuseaddr_ports_exhausted.c
@@ -17,6 +17,8 @@
  *
  * Author: Kuniyuki Iwashima <kuniyu@xxxxxxxxxxxx>
  */
+#define _GNU_SOURCE
+
 #include <arpa/inet.h>
 #include <netinet/in.h>
 #include <sys/socket.h>
--
2.45.0.rc0.197.gbae5840b3b-goog