support/testing: add ethtool runtime test

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 0623c53054)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -1772,6 +1772,8 @@ F:	support/testing/tests/package/test_ddrescue.py
 F:	support/testing/tests/package/test_ddrescue/
 F:	support/testing/tests/package/test_dos2unix.py
 F:	support/testing/tests/package/test_ed.py
+F:	support/testing/tests/package/test_ethtool.py
+F:	support/testing/tests/package/test_ethtool/
 F:	support/testing/tests/package/test_file.py
 F:	support/testing/tests/package/test_file/
 F:	support/testing/tests/package/test_fluidsynth.py

support/testing/tests/package/test_ethtool.py

@@ -0,0 +1,71 @@
+import os
+
+import infra.basetest
+
+
+class TestEthtool(infra.basetest.BRTest):
+    # This ethtool test uses an emulated Intel e1000e adapted (which
+    # is well supported by Qemu, the Kernel and ethtool). We are not
+    # using the usual virtio_net because it's not supporting some
+    # ethtool features like adapter testing. For that reason, we need
+    # to compile a Kernel.
+    kernel_fragment = \
+        infra.filepath("tests/package/test_ethtool/linux-e1000e.fragment")
+    config = \
+        f"""
+        BR2_aarch64=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
+        BR2_LINUX_KERNEL=y
+        BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+        BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.6.27"
+        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="{kernel_fragment}"
+        BR2_PACKAGE_ETHTOOL=y
+        BR2_TARGET_ROOTFS_EXT2=y
+        BR2_TARGET_ROOTFS_EXT2_4=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        drive = os.path.join(self.builddir, "images", "rootfs.ext4")
+        kern = os.path.join(self.builddir, "images", "Image")
+        self.emulator.boot(arch="aarch64",
+                           kernel=kern,
+                           kernel_cmdline=["root=/dev/vda console=ttyAMA0"],
+                           options=["-M", "virt",
+                                    "-cpu", "cortex-a57",
+                                    "-m", "256M",
+                                    "-netdev", "user,id=test_net",
+                                    "-net", "nic,model=e1000e,netdev=test_net",
+                                    "-drive", f"file={drive},if=virtio,format=raw"])
+        self.emulator.login()
+
+        # We check the program can run.
+        self.assertRunOk("ethtool --version")
+
+        # We check a simple query runs correctly.
+        self.assertRunOk("ethtool eth0")
+
+        # We query the driver name and check it's the expected e1000e.
+        out, ret = self.emulator.run("ethtool -i eth0")
+        self.assertEqual(ret, 0)
+        self.assertEqual(out[0], "driver: e1000e")
+
+        # We request an adapter online self test.
+        self.assertRunOk("ethtool -t eth0 online", timeout=30)
+
+        # We query offload parameters and check TSO are enabled (this
+        # is the driver default).
+        out, ret = self.emulator.run("ethtool -k eth0")
+        self.assertEqual(ret, 0)
+        self.assertIn("tcp-segmentation-offload: on", out)
+
+        # We request to disable TSO.
+        self.assertRunOk("ethtool -K eth0 tcp-segmentation-offload off")
+
+        # We check again. TSO should now be disabled.
+        out, ret = self.emulator.run("ethtool -k eth0")
+        self.assertEqual(ret, 0)
+        self.assertIn("tcp-segmentation-offload: off", out)

support/testing/tests/package/test_ethtool/linux-e1000e.fragment

@@ -0,0 +1 @@
+CONFIG_E1000E=y