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@@ -0,0 +1,97 @@
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+import os
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+
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+import infra.basetest
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+
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+
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+class TestKmod(infra.basetest.BRTest):
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+ # This test uses the "virtio_net" driver compiled as a module. We
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+ # need to recompile a Kernel for that.
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+ kernel_fragment = \
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+ infra.filepath("tests/package/test_kmod/linux-virtio-net.fragment")
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+ config = \
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+ f"""
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+ BR2_aarch64=y
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+ BR2_TOOLCHAIN_EXTERNAL=y
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+ BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
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+ BR2_LINUX_KERNEL=y
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+ BR2_LINUX_KERNEL_CUSTOM_VERSION=y
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+ BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.6.35"
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+ BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
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+ BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
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+ BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{kernel_fragment}"
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+ BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
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+ BR2_PACKAGE_KMOD=y
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+ BR2_PACKAGE_KMOD_TOOLS=y
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+ BR2_TARGET_ROOTFS_EXT2=y
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+ BR2_TARGET_ROOTFS_EXT2_4=y
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+ # BR2_TARGET_ROOTFS_TAR is not set
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+ """
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+
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+ def test_run(self):
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+ drive = os.path.join(self.builddir, "images", "rootfs.ext4")
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+ kern = os.path.join(self.builddir, "images", "Image")
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+ self.emulator.boot(arch="aarch64",
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+ kernel=kern,
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+ kernel_cmdline=["root=/dev/vda console=ttyAMA0"],
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+ options=["-M", "virt",
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+ "-cpu", "cortex-a57",
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+ "-m", "256M",
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+ "-drive", f"file={drive},if=virtio,format=raw"])
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+ self.emulator.login()
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+
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+ # We check the kmod program can run. Busybox does not have a
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+ # kmod applet, so there is no possible confusion.
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+ self.assertRunOk("kmod --version")
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+
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+ # We check the "modprobe" is the one from kmod, rather than
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+ # the Busybox applet version.
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+ out, ret = self.emulator.run("modprobe --version")
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+ self.assertEqual(ret, 0)
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+ self.assertTrue(out[0].startswith("kmod version"))
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+
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+ # List modules with "kmod list", the virtio-net module should
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+ # NOT be loaded yet.
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+ out, ret = self.emulator.run("kmod list")
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+ self.assertEqual(ret, 0)
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+ self.assertNotIn("virtio_net", "\n".join(out))
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+
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+ # Get module info with modinfo.
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+ out, ret = self.emulator.run("modinfo virtio-net")
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+ self.assertEqual(ret, 0)
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+ lsmod_out = "\n".join(out)
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+ self.assertRegex(lsmod_out, r'name: *virtio_net')
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+ self.assertRegex(lsmod_out, r'description: *Virtio network driver')
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+
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+ # With this test configuration, we are not supposed to have an
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+ # eth0 Ethernet interface yet. Attempting to show info on this
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+ # interface is expected to fail .
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+ _, ret = self.emulator.run("ip link show dev eth0")
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+ self.assertNotEqual(ret, 0)
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+
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+ # We try to load the module.
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+ self.assertRunOk("modprobe virtio-net")
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+
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+ # We should now see the module in the list. This time, we use
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+ # the "lsmod" command.
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+ out, ret = self.emulator.run("lsmod")
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+ self.assertEqual(ret, 0)
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+ self.assertIn("virtio_net", "\n".join(out))
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+
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+ # The eth0 interface is supposed to be available, after the
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+ # module loading. We configure the emulator user network to
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+ # test the driver networking functionality. See:
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+ # https://wiki.qemu.org/Documentation/Networking
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+ self.assertRunOk("ip addr add dev eth0 10.0.2.15/24")
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+ self.assertRunOk("ip link set dev eth0 up")
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+
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+ # We check we can ping the emulator.
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+ ping_cmd = "ping -i 0.3 -c 2 10.0.2.2"
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+ self.assertRunOk(ping_cmd)
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+
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+ # We check we can unload the driver.
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+ self.assertRunOk("modprobe -r virtio-net")
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+
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+ # Now the driver is unloaded, we should no longer be able to
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+ # ping the emulator.
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+ _, ret = self.emulator.run(ping_cmd)
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+ self.assertNotEqual(ret, 0)
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Julien Olivain