* [Buildroot] [PATCH 1/1] support/testing: wpa_supplicant: new runtime test
@ 2026-08-18 22:41 Julien Olivain via buildroot
2026-08-27 21:09 ` Julien Olivain via buildroot
0 siblings, 1 reply; 2+ messages in thread
From: Julien Olivain via buildroot @ 2026-08-18 22:41 UTC (permalink / raw)
To: buildroot; +Cc: Julien Olivain
Signed-off-by: Julien Olivain <ju.o@free.fr>
---
Patch tested in:
https://gitlab.com/jolivain/buildroot/-/jobs/15968993900
---
DEVELOPERS | 2 +
.../tests/package/test_wpa_supplicant.py | 121 ++++++++++++++++++
.../linux-mac80211-hwsim.fragment | 3 +
.../rootfs-overlay/etc/hostapd.conf | 14 ++
.../rootfs-overlay/etc/wpa_supplicant.conf | 13 ++
5 files changed, 153 insertions(+)
create mode 100644 support/testing/tests/package/test_wpa_supplicant.py
create mode 100644 support/testing/tests/package/test_wpa_supplicant/linux-mac80211-hwsim.fragment
create mode 100644 support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/hostapd.conf
create mode 100644 support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/wpa_supplicant.conf
diff --git a/DEVELOPERS b/DEVELOPERS
index 98c9ee55d3..91b5d3cf89 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -2061,6 +2061,8 @@ F: support/testing/tests/package/test_weston/
F: support/testing/tests/package/test_wget.py
F: support/testing/tests/package/test_which.py
F: support/testing/tests/package/test_wine.py
+F: support/testing/tests/package/test_wpa_supplicant.py
+F: support/testing/tests/package/test_wpa_supplicant/
F: support/testing/tests/package/test_xfsprogs.py
F: support/testing/tests/package/test_xfsprogs/
F: support/testing/tests/package/test_xvisor.py
diff --git a/support/testing/tests/package/test_wpa_supplicant.py b/support/testing/tests/package/test_wpa_supplicant.py
new file mode 100644
index 0000000000..ba6cef3fef
--- /dev/null
+++ b/support/testing/tests/package/test_wpa_supplicant.py
@@ -0,0 +1,121 @@
+import os
+import time
+
+import infra.basetest
+
+
+class TestWPASupplicant(infra.basetest.BRTest):
+ test_dir = "tests/package/test_wpa_supplicant"
+ # This test uses the mac80211_hwsim kernel test driver. See:
+ # https://docs.kernel.org/networking/mac80211_hwsim/mac80211_hwsim.html
+ kern_frag = \
+ infra.filepath(f"{test_dir}/linux-mac80211-hwsim.fragment")
+ rootfs_overlay = \
+ infra.filepath(f"{test_dir}/rootfs-overlay")
+ config = \
+ f"""
+ BR2_aarch64=y
+ BR2_TOOLCHAIN_EXTERNAL=y
+ BR2_LINUX_KERNEL=y
+ BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+ BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.18.44"
+ BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+ BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
+ BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{kern_frag}"
+ BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+ BR2_PACKAGE_HOSTAPD=y
+ BR2_PACKAGE_IPROUTE2=y
+ BR2_PACKAGE_IW=y
+ BR2_PACKAGE_WPA_SUPPLICANT=y
+ BR2_PACKAGE_WPA_SUPPLICANT_CLI=y
+ BR2_ROOTFS_OVERLAY="{rootfs_overlay}"
+ BR2_TARGET_ROOTFS_EXT2=y
+ BR2_TARGET_ROOTFS_EXT2_4=y
+ BR2_TARGET_ROOTFS_EXT2_SIZE="256M"
+ # BR2_TARGET_ROOTFS_TAR is not set
+ """
+
+ def test_run(self):
+ disk = os.path.join(self.builddir, "images", "rootfs.ext4")
+ kern = os.path.join(self.builddir, "images", "Image")
+ bootargs = ["root=/dev/vda"]
+ qemu_opts = ["-M", "virt", "-cpu", "cortex-a57", "-m", "512M",
+ "-drive", f"file={disk},if=virtio,format=raw"]
+ self.emulator.boot(arch="aarch64",
+ kernel=kern,
+ kernel_cmdline=bootargs,
+ options=qemu_opts)
+ self.emulator.login()
+
+ # We check the program can run.
+ self.assertRunOk("wpa_supplicant -v")
+
+ # We define a network namespace to isolate our
+ # access point components.
+ ns = "ap-ns"
+
+ # We create the network namespace.
+ self.assertRunOk(f"ip netns add {ns}")
+
+ # We isolate our wireless network device in our namespace.
+ self.assertRunOk(f"iw phy phy0 set netns name {ns}")
+
+ # We define the command prefix to execute commands inside
+ # our network namespace.
+ ns_exec = f"ip netns exec {ns}"
+
+ # We start the hostapd daemon.
+ cmd = [
+ ns_exec,
+ "hostapd",
+ "-B",
+ "-f /var/log/hostapd.log",
+ "/etc/hostapd.conf"
+ ]
+ self.assertRunOk(" ".join(cmd))
+
+ # We wait for the wlan0 interface to come up.
+ for attempt in range(10):
+ time.sleep(3)
+
+ cmd = ns_exec
+ cmd += " cat /sys/class/net/wlan0/operstate"
+ out, ret = self.emulator.run(cmd)
+ self.assertEqual(ret, 0)
+ if out[0] == "up":
+ break
+ else:
+ self.fail("Timeout while waiting for wlan0 to be up.")
+
+ # We start the wpa_supplicant client process.
+ cmd = [
+ "wpa_supplicant",
+ "-B",
+ "-f /var/log/wpa_supplicant.log",
+ "-i wlan1",
+ "-c /etc/wpa_supplicant.conf"
+ ]
+ self.assertRunOk(" ".join(cmd))
+
+ # We wait for the wlan1 interface to come up.
+ for attempt in range(10):
+ time.sleep(3)
+
+ cmd = "cat /sys/class/net/wlan1/operstate"
+ out, ret = self.emulator.run(cmd)
+ self.assertEqual(ret, 0)
+ if out[0] == "up":
+ break
+ else:
+ self.fail("Timeout while waiting for wlan1 to be up.")
+
+ # We set an IP address on the wlan0 hostapd side.
+ cmd = ns_exec
+ cmd += " ip addr add dev wlan0 192.168.1.111/24"
+ self.assertRunOk(cmd)
+
+ # We set an IP address on the wlan1 wpa_supplicant side.
+ self.assertRunOk("ip addr add dev wlan1 192.168.1.222/24")
+
+ # We check we can ping the hostapd wlan0 IP address.
+ self.assertRunOk("ping -c 3 -i 0.2 -W 2 192.168.1.111")
diff --git a/support/testing/tests/package/test_wpa_supplicant/linux-mac80211-hwsim.fragment b/support/testing/tests/package/test_wpa_supplicant/linux-mac80211-hwsim.fragment
new file mode 100644
index 0000000000..30aee1e9a0
--- /dev/null
+++ b/support/testing/tests/package/test_wpa_supplicant/linux-mac80211-hwsim.fragment
@@ -0,0 +1,3 @@
+CONFIG_CFG80211=y
+CONFIG_MAC80211=y
+CONFIG_MAC80211_HWSIM=y
diff --git a/support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/hostapd.conf b/support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/hostapd.conf
new file mode 100644
index 0000000000..b7c3c1a446
--- /dev/null
+++ b/support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/hostapd.conf
@@ -0,0 +1,14 @@
+# Config example taken from kernel
+# Documentation/networking/mac80211_hwsim/hostapd.conf
+
+interface=wlan0
+driver=nl80211
+
+hw_mode=g
+channel=1
+ssid=mac80211 test
+
+wpa=2
+wpa_key_mgmt=WPA-PSK
+wpa_pairwise=CCMP
+wpa_passphrase=12345678
diff --git a/support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/wpa_supplicant.conf b/support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/wpa_supplicant.conf
new file mode 100644
index 0000000000..3914a03046
--- /dev/null
+++ b/support/testing/tests/package/test_wpa_supplicant/rootfs-overlay/etc/wpa_supplicant.conf
@@ -0,0 +1,13 @@
+# Config example taken from kernel
+# Documentation/networking/mac80211_hwsim/wpa_supplicant.conf
+
+ctrl_interface=/var/run/wpa_supplicant
+
+network={
+ ssid="mac80211 test"
+ psk="12345678"
+ key_mgmt=WPA-PSK
+ proto=WPA2
+ pairwise=CCMP
+ group=CCMP
+}
--
2.55.0
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