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vmm: Leverage virtio-net to provide connectivity

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This patch expand the device registration to add a new virtio-net
device in case the user provide the appropriate flag --net from the
command line.

If the flag is provided, the code will parse the TAP interface name
and the expected MAC address from the command line. The VM will be
connected to the provided TAP interface, and it will communicate the
MAC address to the virtio-net driver.

If the flag is not provided, the VM will not register any virtio-net
device, therefore it will not have any connectivity with the host.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2019-05-09 08:01:42 -07:00
committed by Samuel Ortiz
parent 53f5295454
commit c0be6642ad
4 changed files with 91 additions and 5 deletions
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14
src/main.rs
View File

@@ -37,6 +37,12 @@ fn main() {
.help("Path to VM disk image")
.takes_value(true),
)
.arg(
Arg::with_name("net")
.long("net")
.help("Network parameters \"tap=<if_name>,mac=<mac_addr>\"")
.takes_value(true),
)
.arg(
Arg::with_name("cpus")
.long("cpus")
@@ -68,6 +74,11 @@ fn main() {
.expect("Missing argument: disk");
let disk_path = disk_arg.as_path();
let mut net_params = None;
if let Some(net) = cmd_arguments.value_of("net") {
net_params = Some(net.to_string());
}
let mut vcpus = DEFAULT_VCPUS;
if let Some(cpus) = cmd_arguments.value_of("cpus") {
vcpus = cpus.parse::<u8>().unwrap();
@@ -81,7 +92,8 @@ fn main() {
println!("VM [{} vCPUS {} MB of memory]", vcpus, memory);
println!("Booting {:?}...", kernel_path);
let vm_config = VmConfig::new(kernel_path, disk_path, cmdline, vcpus, memory).unwrap();
let vm_config =
VmConfig::new(kernel_path, disk_path, cmdline, net_params, vcpus, memory).unwrap();
vmm::boot_kernel(vm_config).unwrap();
}