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ci: Extend virtio-iommu integration test

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Now that our custom kernel includes all the patches for the full support
of virtio-iommu, we can go one step further by attaching the virtio-net
device to the virtual IOMMU and use it to SSH some commands validating
both disks and the network card are isolated into their own IOMMU group.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2019-10-09 16:27:27 -07:00 committed by Samuel Ortiz
parent 1fc8ee945a
commit 6e9e24ec0f
1 changed files with 45 additions and 1 deletions
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46
src/main.rs
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@ -860,6 +860,13 @@ mod tests {
)
}
fn default_net_string_w_iommu(&self) -> String {
format!(
"tap=,mac={},ip={},mask=255.255.255.0,iommu=on",
self.network.guest_mac, self.network.host_ip
)
}
fn ssh_command(&self, command: &str) -> Result<String, Error> {
ssh_command_ip(command, &self.network.guest_ip)
}
@ -2732,6 +2739,12 @@ mod tests {
}
#[cfg_attr(not(feature = "mmio"), test)]
// This test validates that it can find the virtio-iommu device at first.
// It also verifies that both disks and the network card are attached to
// the virtual IOMMU by looking at /sys/kernel/iommu_groups directory.
// The last interesting part of this test is that it exercises the network
// interface attached to the virtual IOMMU since this is the one used to
// send all commands through SSH.
fn test_virtio_iommu() {
test_block!(tb, "", {
let mut clear = ClearDiskConfig::new();
@ -2759,13 +2772,14 @@ mod tests {
)
.as_str(),
])
.args(&["--net", guest.default_net_string().as_str()])
.args(&["--net", guest.default_net_string_w_iommu().as_str()])
.args(&["--cmdline", "root=PARTUUID=19866ecd-ecc4-4ef8-b313-09a92260ef9b console=tty0 console=ttyS0,115200n8 console=hvc0 quiet init=/usr/lib/systemd/systemd-bootchart initcall_debug tsc=reliable no_timer_check noreplace-smp cryptomgr.notests rootfstype=ext4,btrfs,xfs kvm-intel.nested=1 rw"])
.spawn()
.unwrap();
thread::sleep(std::time::Duration::new(20, 0));
// Verify the virtio-iommu device is present.
#[cfg(not(feature = "mmio"))]
aver!(
tb,
@ -2774,6 +2788,36 @@ mod tests {
.unwrap_or_default()
);
// Verify the first disk is located under IOMMU group 0.
aver_eq!(
tb,
guest
.ssh_command("ls /sys/kernel/iommu_groups/0/devices")
.unwrap()
.trim(),
"0000:00:03.0"
);
// Verify the second disk is located under IOMMU group 1.
aver_eq!(
tb,
guest
.ssh_command("ls /sys/kernel/iommu_groups/1/devices")
.unwrap()
.trim(),
"0000:00:04.0"
);
// Verify the network card is located under IOMMU group 2.
aver_eq!(
tb,
guest
.ssh_command("ls /sys/kernel/iommu_groups/2/devices")
.unwrap()
.trim(),
"0000:00:05.0"
);
guest.ssh_command("sudo shutdown -h now")?;
thread::sleep(std::time::Duration::new(10, 0));
let _ = child.kill();