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vmm: Add support for letting the VMM create the TAP interface

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Until now, the only way to get some networking with cloud-hypervisor
was to let the user create a TAP interface first, and then to provide
the name of this interface to the VMM.

This patch extend the previous behavior by adding the support for the
creation of a brand new TAP interface from the VMM itself. In case no
interface name is provided through "tap=<if_name>", we will assume
the user wants the VMM to create and set the interface on its behalf,
no matter the value of other parameters (ip, mask, and mac).
In this same scenario, because the user expects the VMM to create the
TAP interface, he can also provide the associated IP address and subnet
mask associated with it. In case those values are not provided, some
default ones will be picked.

No matter the value of "tap", the MAC address will always be set, and
if no value is provided, the VMM will come up with a default value for
it.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2019-05-09 11:21:15 -07:00
committed by Samuel Ortiz
parent 0c4c330843
commit 5934f30fde
2 changed files with 67 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/main.rs
View File

@@ -40,7 +40,7 @@ fn main() {
.arg(
Arg::with_name("net")
.long("net")
.help("Network parameters \"tap=<if_name>,mac=<mac_addr>\"")
.help("Network parameters \"tap=<if_name>,ip=<ip_addr>,mask=<net_mask>,mac=<mac_addr>\"")
.takes_value(true),
)
.arg(
@@ -81,8 +81,12 @@ fn main() {
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());
if cmd_arguments.is_present("net") {
if let Some(net) = cmd_arguments.value_of("net") {
net_params = Some(net.to_string());
} else {
net_params = Some(String::new())
}
}
let rng_path = match cmd_arguments.occurrences_of("rng") {