cloud-hypervisor/vmm/src/config.rs

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// Copyright © 2019 Intel Corporation
//
// SPDX-License-Identifier: Apache-2.0
//
use clap::ArgMatches;
use net_util::MacAddr;
use option_parser::{
ByteSized, IntegerList, OptionParser, OptionParserError, StringList, Toggle, TupleTwoIntegers,
};
use std::convert::From;
use std::fmt;
use std::net::Ipv4Addr;
use std::path::PathBuf;
use std::result;
use std::str::FromStr;
pub const DEFAULT_VCPUS: u8 = 1;
pub const DEFAULT_MEMORY_MB: u64 = 512;
pub const DEFAULT_RNG_SOURCE: &str = "/dev/urandom";
pub const DEFAULT_NUM_QUEUES_VUNET: usize = 2;
pub const DEFAULT_QUEUE_SIZE_VUNET: u16 = 256;
pub const DEFAULT_NUM_QUEUES_VUBLK: usize = 1;
pub const DEFAULT_QUEUE_SIZE_VUBLK: u16 = 128;
/// Errors associated with VM configuration parameters.
#[derive(Debug)]
pub enum Error {
/// Filesystem tag is missing
ParseFsTagMissing,
/// Filesystem socket is missing
ParseFsSockMissing,
/// Cannot have dax=off along with cache_size parameter.
InvalidCacheSizeWithDaxOff,
/// Missing persistent memory file parameter.
ParsePmemFileMissing,
/// Missing vsock socket path parameter.
ParseVsockSockMissing,
/// Missing vsock cid parameter.
ParseVsockCidMissing,
/// Missing restore source_url parameter.
ParseRestoreSourceUrlMissing,
/// Error parsing CPU options
ParseCpus(OptionParserError),
/// Error parsing memory options
ParseMemory(OptionParserError),
/// Error parsing memory zone options
ParseMemoryZone(OptionParserError),
/// Missing 'id' from memory zone
ParseMemoryZoneIdMissing,
/// Error parsing disk options
ParseDisk(OptionParserError),
/// Error parsing network options
ParseNetwork(OptionParserError),
/// Error parsing RNG options
ParseRNG(OptionParserError),
/// Error parsing filesystem parameters
ParseFileSystem(OptionParserError),
/// Error parsing persistent memory parameters
ParsePersistentMemory(OptionParserError),
/// Failed parsing console
ParseConsole(OptionParserError),
/// No mode given for console
ParseConsoleInvalidModeGiven,
/// Failed parsing device parameters
ParseDevice(OptionParserError),
/// Missing path from device,
ParseDevicePathMissing,
/// Failed to parse vsock parameters
ParseVsock(OptionParserError),
/// Failed to parse restore parameters
ParseRestore(OptionParserError),
/// Failed to parse SGX EPC parameters
#[cfg(target_arch = "x86_64")]
ParseSgxEpc(OptionParserError),
/// Failed to parse NUMA parameters
ParseNuma(OptionParserError),
/// Failed to validate configuration
Validation(ValidationError),
}
#[derive(Debug)]
pub enum ValidationError {
/// Both console and serial are tty.
DoubleTtyMode,
/// No kernel specified
KernelMissing,
/// Missing file value for console
ConsoleFileMissing,
/// Max is less than boot
CpusMaxLowerThanBoot,
/// Both socket and path specified
DiskSocketAndPath,
/// Using vhost user requires shared memory
VhostUserRequiresSharedMemory,
/// Trying to use IOMMU without PCI
IommuUnsupported,
/// Trying to use VFIO without PCI
VfioUnsupported,
/// CPU topology count doesn't match max
CpuTopologyCount,
/// One part of the CPU topology was zero
CpuTopologyZeroPart,
/// Virtio needs a min of 2 queues
VnetQueueLowerThan2,
}
type ValidationResult<T> = std::result::Result<T, ValidationError>;
impl fmt::Display for ValidationError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::ValidationError::*;
match self {
DoubleTtyMode => write!(f, "Console mode tty specified for both serial and console"),
KernelMissing => write!(f, "No kernel specified"),
ConsoleFileMissing => write!(f, "Path missing when using file console mode"),
CpusMaxLowerThanBoot => write!(f, "Max CPUs greater than boot CPUs"),
DiskSocketAndPath => write!(f, "Disk path and vhost socket both provided"),
VhostUserRequiresSharedMemory => {
write!(f, "Using vhost-user requires using shared memory")
}
IommuUnsupported => write!(f, "Using an IOMMU without PCI support is unsupported"),
VfioUnsupported => write!(f, "Using VFIO without PCI support is unsupported"),
CpuTopologyZeroPart => write!(f, "No part of the CPU topology can be zero"),
CpuTopologyCount => write!(
f,
"Product of CPU topology parts does not match maximum vCPUs"
),
VnetQueueLowerThan2 => write!(f, "Number of queues to virtio_net less than 2"),
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::Error::*;
match self {
ParseConsole(o) => write!(f, "Error parsing --console: {}", o),
ParseConsoleInvalidModeGiven => {
write!(f, "Error parsing --console: invalid console mode given")
}
ParseCpus(o) => write!(f, "Error parsing --cpus: {}", o),
ParseDevice(o) => write!(f, "Error parsing --device: {}", o),
ParseDevicePathMissing => write!(f, "Error parsing --device: path missing"),
ParseFileSystem(o) => write!(f, "Error parsing --fs: {}", o),
ParseFsSockMissing => write!(f, "Error parsing --fs: socket missing"),
ParseFsTagMissing => write!(f, "Error parsing --fs: tag missing"),
InvalidCacheSizeWithDaxOff => {
write!(f, "Error parsing --fs: cache_size used with dax=on")
}
ParsePersistentMemory(o) => write!(f, "Error parsing --pmem: {}", o),
ParsePmemFileMissing => write!(f, "Error parsing --pmem: file missing"),
ParseVsock(o) => write!(f, "Error parsing --vsock: {}", o),
ParseVsockCidMissing => write!(f, "Error parsing --vsock: cid missing"),
ParseVsockSockMissing => write!(f, "Error parsing --vsock: socket missing"),
ParseMemory(o) => write!(f, "Error parsing --memory: {}", o),
ParseMemoryZone(o) => write!(f, "Error parsing --memory-zone: {}", o),
ParseMemoryZoneIdMissing => write!(f, "Error parsing --memory-zone: id missing"),
ParseNetwork(o) => write!(f, "Error parsing --net: {}", o),
ParseDisk(o) => write!(f, "Error parsing --disk: {}", o),
ParseRNG(o) => write!(f, "Error parsing --rng: {}", o),
ParseRestore(o) => write!(f, "Error parsing --restore: {}", o),
#[cfg(target_arch = "x86_64")]
ParseSgxEpc(o) => write!(f, "Error parsing --sgx-epc: {}", o),
ParseNuma(o) => write!(f, "Error parsing --numa: {}", o),
ParseRestoreSourceUrlMissing => {
write!(f, "Error parsing --restore: source_url missing")
}
Validation(v) => write!(f, "Error validating configuration: {}", v),
}
}
}
pub type Result<T> = result::Result<T, Error>;
pub struct VmParams<'a> {
pub cpus: &'a str,
pub memory: &'a str,
pub memory_zones: Option<Vec<&'a str>>,
pub kernel: Option<&'a str>,
pub initramfs: Option<&'a str>,
pub cmdline: Option<&'a str>,
pub disks: Option<Vec<&'a str>>,
pub net: Option<Vec<&'a str>>,
pub rng: &'a str,
pub fs: Option<Vec<&'a str>>,
pub pmem: Option<Vec<&'a str>>,
pub serial: &'a str,
pub console: &'a str,
pub devices: Option<Vec<&'a str>>,
pub vsock: Option<&'a str>,
#[cfg(target_arch = "x86_64")]
pub sgx_epc: Option<Vec<&'a str>>,
pub numa: Option<Vec<&'a str>>,
}
impl<'a> VmParams<'a> {
pub fn from_arg_matches(args: &'a ArgMatches) -> Self {
// These .unwrap()s cannot fail as there is a default value defined
let cpus = args.value_of("cpus").unwrap();
let memory = args.value_of("memory").unwrap();
let memory_zones: Option<Vec<&str>> = args.values_of("memory-zone").map(|x| x.collect());
let rng = args.value_of("rng").unwrap();
let serial = args.value_of("serial").unwrap();
let kernel = args.value_of("kernel");
let initramfs = args.value_of("initramfs");
let cmdline = args.value_of("cmdline");
let disks: Option<Vec<&str>> = args.values_of("disk").map(|x| x.collect());
let net: Option<Vec<&str>> = args.values_of("net").map(|x| x.collect());
let console = args.value_of("console").unwrap();
let fs: Option<Vec<&str>> = args.values_of("fs").map(|x| x.collect());
let pmem: Option<Vec<&str>> = args.values_of("pmem").map(|x| x.collect());
let devices: Option<Vec<&str>> = args.values_of("device").map(|x| x.collect());
let vsock: Option<&str> = args.value_of("vsock");
#[cfg(target_arch = "x86_64")]
let sgx_epc: Option<Vec<&str>> = args.values_of("sgx-epc").map(|x| x.collect());
let numa: Option<Vec<&str>> = args.values_of("numa").map(|x| x.collect());
VmParams {
cpus,
memory,
memory_zones,
kernel,
initramfs,
cmdline,
disks,
net,
rng,
fs,
pmem,
serial,
console,
devices,
vsock,
#[cfg(target_arch = "x86_64")]
sgx_epc,
numa,
}
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub enum HotplugMethod {
Acpi,
VirtioMem,
}
impl Default for HotplugMethod {
fn default() -> Self {
HotplugMethod::Acpi
}
}
#[derive(Debug)]
pub enum ParseHotplugMethodError {
InvalidValue(String),
}
impl FromStr for HotplugMethod {
type Err = ParseHotplugMethodError;
fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
match s.to_lowercase().as_str() {
"acpi" => Ok(HotplugMethod::Acpi),
"virtio-mem" => Ok(HotplugMethod::VirtioMem),
_ => Err(ParseHotplugMethodError::InvalidValue(s.to_owned())),
}
}
}
pub enum CpuTopologyParseError {
InvalidValue(String),
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct CpuTopology {
pub threads_per_core: u8,
pub cores_per_die: u8,
pub dies_per_package: u8,
pub packages: u8,
}
impl FromStr for CpuTopology {
type Err = CpuTopologyParseError;
fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
let parts: Vec<&str> = s.split(':').collect();
if parts.len() != 4 {
return Err(Self::Err::InvalidValue(s.to_owned()));
}
let t = CpuTopology {
threads_per_core: parts[0]
.parse()
.map_err(|_| Self::Err::InvalidValue(s.to_owned()))?,
cores_per_die: parts[1]
.parse()
.map_err(|_| Self::Err::InvalidValue(s.to_owned()))?,
dies_per_package: parts[2]
.parse()
.map_err(|_| Self::Err::InvalidValue(s.to_owned()))?,
packages: parts[3]
.parse()
.map_err(|_| Self::Err::InvalidValue(s.to_owned()))?,
};
Ok(t)
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct CpusConfig {
pub boot_vcpus: u8,
pub max_vcpus: u8,
#[serde(default)]
pub topology: Option<CpuTopology>,
#[serde(default)]
pub kvm_hyperv: bool,
#[serde(default)]
pub max_phys_bits: Option<u8>,
}
impl CpusConfig {
pub fn parse(cpus: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("boot")
.add("max")
.add("topology")
.add("kvm_hyperv")
.add("max_phys_bits");
parser.parse(cpus).map_err(Error::ParseCpus)?;
let boot_vcpus: u8 = parser
.convert("boot")
.map_err(Error::ParseCpus)?
.unwrap_or(DEFAULT_VCPUS);
let max_vcpus: u8 = parser
.convert("max")
.map_err(Error::ParseCpus)?
.unwrap_or(boot_vcpus);
let topology = parser.convert("topology").map_err(Error::ParseCpus)?;
let kvm_hyperv = parser
.convert::<Toggle>("kvm_hyperv")
.map_err(Error::ParseCpus)?
.unwrap_or(Toggle(false))
.0;
let max_phys_bits = parser
.convert::<u8>("max_phys_bits")
.map_err(Error::ParseCpus)?;
Ok(CpusConfig {
boot_vcpus,
max_vcpus,
topology,
kvm_hyperv,
max_phys_bits,
})
}
}
impl Default for CpusConfig {
fn default() -> Self {
CpusConfig {
boot_vcpus: DEFAULT_VCPUS,
max_vcpus: DEFAULT_VCPUS,
topology: None,
kvm_hyperv: false,
max_phys_bits: None,
}
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct MemoryZoneConfig {
pub id: String,
pub size: u64,
#[serde(default)]
pub file: Option<PathBuf>,
#[serde(default)]
pub shared: bool,
#[serde(default)]
pub hugepages: bool,
#[serde(default)]
pub host_numa_node: Option<u32>,
#[serde(default)]
pub hotplug_size: Option<u64>,
#[serde(default)]
pub hotplugged_size: Option<u64>,
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct MemoryConfig {
pub size: u64,
#[serde(default)]
pub mergeable: bool,
#[serde(default)]
pub hotplug_method: HotplugMethod,
#[serde(default)]
pub hotplug_size: Option<u64>,
#[serde(default)]
pub hotplugged_size: Option<u64>,
#[serde(default)]
pub shared: bool,
#[serde(default)]
pub hugepages: bool,
#[serde(default)]
pub balloon: bool,
#[serde(default)]
pub balloon_size: u64,
#[serde(default)]
pub zones: Option<Vec<MemoryZoneConfig>>,
}
impl MemoryConfig {
pub fn parse(memory: &str, memory_zones: Option<Vec<&str>>) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("size")
.add("file")
.add("mergeable")
.add("hotplug_method")
.add("hotplug_size")
.add("hotplugged_size")
.add("shared")
.add("hugepages")
.add("balloon");
parser.parse(memory).map_err(Error::ParseMemory)?;
let size = parser
.convert::<ByteSized>("size")
.map_err(Error::ParseMemory)?
.unwrap_or(ByteSized(DEFAULT_MEMORY_MB << 20))
.0;
let mergeable = parser
.convert::<Toggle>("mergeable")
.map_err(Error::ParseMemory)?
.unwrap_or(Toggle(false))
.0;
let hotplug_method = parser
.convert("hotplug_method")
.map_err(Error::ParseMemory)?
.unwrap_or_default();
let hotplug_size = parser
.convert::<ByteSized>("hotplug_size")
.map_err(Error::ParseMemory)?
.map(|v| v.0);
let hotplugged_size = parser
.convert::<ByteSized>("hotplugged_size")
.map_err(Error::ParseMemory)?
.map(|v| v.0);
let shared = parser
.convert::<Toggle>("shared")
.map_err(Error::ParseMemory)?
.unwrap_or(Toggle(false))
.0;
let hugepages = parser
.convert::<Toggle>("hugepages")
.map_err(Error::ParseMemory)?
.unwrap_or(Toggle(false))
.0;
let balloon = parser
.convert::<Toggle>("balloon")
.map_err(Error::ParseMemory)?
.unwrap_or(Toggle(false))
.0;
let zones: Option<Vec<MemoryZoneConfig>> = if let Some(memory_zones) = &memory_zones {
let mut zones = Vec::new();
for memory_zone in memory_zones.iter() {
let mut parser = OptionParser::new();
parser
.add("id")
.add("size")
.add("file")
.add("shared")
.add("hugepages")
.add("host_numa_node")
.add("hotplug_size")
.add("hotplugged_size");
parser.parse(memory_zone).map_err(Error::ParseMemoryZone)?;
let id = parser.get("id").ok_or(Error::ParseMemoryZoneIdMissing)?;
let size = parser
.convert::<ByteSized>("size")
.map_err(Error::ParseMemoryZone)?
.unwrap_or(ByteSized(DEFAULT_MEMORY_MB << 20))
.0;
let file = parser.get("file").map(PathBuf::from);
let shared = parser
.convert::<Toggle>("shared")
.map_err(Error::ParseMemoryZone)?
.unwrap_or(Toggle(false))
.0;
let hugepages = parser
.convert::<Toggle>("hugepages")
.map_err(Error::ParseMemoryZone)?
.unwrap_or(Toggle(false))
.0;
let host_numa_node = parser
.convert::<u32>("host_numa_node")
.map_err(Error::ParseMemoryZone)?;
let hotplug_size = parser
.convert::<ByteSized>("hotplug_size")
.map_err(Error::ParseMemoryZone)?
.map(|v| v.0);
let hotplugged_size = parser
.convert::<ByteSized>("hotplugged_size")
.map_err(Error::ParseMemoryZone)?
.map(|v| v.0);
zones.push(MemoryZoneConfig {
id,
size,
file,
shared,
hugepages,
host_numa_node,
hotplug_size,
hotplugged_size,
});
}
Some(zones)
} else {
None
};
Ok(MemoryConfig {
size,
mergeable,
hotplug_method,
hotplug_size,
hotplugged_size,
shared,
hugepages,
balloon,
balloon_size: 0,
zones,
})
}
pub fn total_size(&self) -> u64 {
let mut size = self.size;
if let Some(hotplugged_size) = self.hotplugged_size {
size += hotplugged_size;
}
if let Some(zones) = &self.zones {
for zone in zones.iter() {
size += zone.size;
if let Some(hotplugged_size) = zone.hotplugged_size {
size += hotplugged_size;
}
}
}
size
}
}
impl Default for MemoryConfig {
fn default() -> Self {
MemoryConfig {
size: DEFAULT_MEMORY_MB << 20,
mergeable: false,
hotplug_method: HotplugMethod::Acpi,
hotplug_size: None,
hotplugged_size: None,
shared: false,
hugepages: false,
balloon: false,
balloon_size: 0,
zones: None,
}
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct KernelConfig {
pub path: PathBuf,
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct InitramfsConfig {
pub path: PathBuf,
}
#[derive(Clone, Debug, Default, PartialEq, Deserialize, Serialize)]
pub struct CmdlineConfig {
pub args: String,
}
impl CmdlineConfig {
pub fn parse(cmdline: Option<&str>) -> Result<Self> {
let args = cmdline
.map(std::string::ToString::to_string)
.unwrap_or_else(String::new);
Ok(CmdlineConfig { args })
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct DiskConfig {
pub path: Option<PathBuf>,
#[serde(default)]
pub readonly: bool,
#[serde(default)]
pub direct: bool,
#[serde(default)]
pub iommu: bool,
#[serde(default = "default_diskconfig_num_queues")]
pub num_queues: usize,
#[serde(default = "default_diskconfig_queue_size")]
pub queue_size: u16,
#[serde(default)]
pub vhost_user: bool,
pub vhost_socket: Option<String>,
#[serde(default = "default_diskconfig_poll_queue")]
pub poll_queue: bool,
#[serde(default)]
pub id: Option<String>,
}
fn default_diskconfig_num_queues() -> usize {
DEFAULT_NUM_QUEUES_VUBLK
}
fn default_diskconfig_queue_size() -> u16 {
DEFAULT_QUEUE_SIZE_VUBLK
}
fn default_diskconfig_poll_queue() -> bool {
true
}
impl Default for DiskConfig {
fn default() -> Self {
Self {
path: None,
readonly: false,
direct: false,
iommu: false,
num_queues: default_diskconfig_num_queues(),
queue_size: default_diskconfig_queue_size(),
vhost_user: false,
vhost_socket: None,
poll_queue: default_diskconfig_poll_queue(),
id: None,
}
}
}
impl DiskConfig {
pub const SYNTAX: &'static str = "Disk parameters \
\"path=<disk_image_path>,readonly=on|off,iommu=on|off,num_queues=<number_of_queues>,\
queue_size=<size_of_each_queue>,vhost_user=<vhost_user_enable>,\
socket=<vhost_user_socket_path>, default true>,id=<device_id>\"";
pub fn parse(disk: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("path")
.add("readonly")
.add("direct")
.add("iommu")
.add("queue_size")
.add("num_queues")
.add("vhost_user")
.add("socket")
.add("poll_queue")
.add("id");
parser.parse(disk).map_err(Error::ParseDisk)?;
let path = parser.get("path").map(PathBuf::from);
let readonly = parser
.convert::<Toggle>("readonly")
.map_err(Error::ParseDisk)?
.unwrap_or(Toggle(false))
.0;
let direct = parser
.convert::<Toggle>("direct")
.map_err(Error::ParseDisk)?
.unwrap_or(Toggle(false))
.0;
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParseDisk)?
.unwrap_or(Toggle(false))
.0;
let queue_size = parser
.convert("queue_size")
.map_err(Error::ParseDisk)?
.unwrap_or_else(default_diskconfig_queue_size);
let num_queues = parser
.convert("num_queues")
.map_err(Error::ParseDisk)?
.unwrap_or_else(default_diskconfig_num_queues);
let vhost_user = parser
.convert::<Toggle>("vhost_user")
.map_err(Error::ParseDisk)?
.unwrap_or(Toggle(false))
.0;
let vhost_socket = parser.get("socket");
let poll_queue = parser
.convert::<Toggle>("poll_queue")
.map_err(Error::ParseDisk)?
.unwrap_or_else(|| Toggle(default_diskconfig_poll_queue()))
.0;
let id = parser.get("id");
if parser.is_set("poll_queue") && !vhost_user {
warn!("poll_queue parameter currently only has effect when used vhost_user=true");
}
Ok(DiskConfig {
path,
readonly,
direct,
iommu,
num_queues,
queue_size,
vhost_socket,
vhost_user,
poll_queue,
id,
})
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct NetConfig {
#[serde(default = "default_netconfig_tap")]
pub tap: Option<String>,
#[serde(default = "default_netconfig_ip")]
pub ip: Ipv4Addr,
#[serde(default = "default_netconfig_mask")]
pub mask: Ipv4Addr,
#[serde(default = "default_netconfig_mac")]
pub mac: MacAddr,
#[serde(default)]
pub host_mac: Option<MacAddr>,
#[serde(default)]
pub iommu: bool,
#[serde(default = "default_netconfig_num_queues")]
pub num_queues: usize,
#[serde(default = "default_netconfig_queue_size")]
pub queue_size: u16,
#[serde(default)]
pub vhost_user: bool,
pub vhost_socket: Option<String>,
#[serde(default)]
pub id: Option<String>,
}
fn default_netconfig_tap() -> Option<String> {
None
}
fn default_netconfig_ip() -> Ipv4Addr {
Ipv4Addr::new(192, 168, 249, 1)
}
fn default_netconfig_mask() -> Ipv4Addr {
Ipv4Addr::new(255, 255, 255, 0)
}
fn default_netconfig_mac() -> MacAddr {
MacAddr::local_random()
}
fn default_netconfig_num_queues() -> usize {
DEFAULT_NUM_QUEUES_VUNET
}
fn default_netconfig_queue_size() -> u16 {
DEFAULT_QUEUE_SIZE_VUNET
}
impl Default for NetConfig {
fn default() -> Self {
Self {
tap: default_netconfig_tap(),
ip: default_netconfig_ip(),
mask: default_netconfig_mask(),
mac: default_netconfig_mac(),
host_mac: None,
iommu: false,
num_queues: default_netconfig_num_queues(),
queue_size: default_netconfig_queue_size(),
vhost_user: false,
vhost_socket: None,
id: None,
}
}
}
impl NetConfig {
pub const SYNTAX: &'static str = "Network parameters \
\"tap=<if_name>,ip=<ip_addr>,mask=<net_mask>,mac=<mac_addr>,iommu=on|off,\
num_queues=<number_of_queues>,queue_size=<size_of_each_queue>,\
vhost_user=<vhost_user_enable>,socket=<vhost_user_socket_path>,id=<device_id>\"";
pub fn parse(net: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("tap")
.add("ip")
.add("mask")
.add("mac")
.add("host_mac")
.add("iommu")
.add("queue_size")
.add("num_queues")
.add("vhost_user")
.add("socket")
.add("id");
parser.parse(net).map_err(Error::ParseNetwork)?;
let tap = parser.get("tap");
let ip = parser
.convert("ip")
.map_err(Error::ParseNetwork)?
.unwrap_or_else(default_netconfig_ip);
let mask = parser
.convert("mask")
.map_err(Error::ParseNetwork)?
.unwrap_or_else(default_netconfig_mask);
let mac = parser
.convert("mac")
.map_err(Error::ParseNetwork)?
.unwrap_or_else(default_netconfig_mac);
let host_mac = parser.convert("host_mac").map_err(Error::ParseNetwork)?;
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParseNetwork)?
.unwrap_or(Toggle(false))
.0;
let queue_size = parser
.convert("queue_size")
.map_err(Error::ParseNetwork)?
.unwrap_or_else(default_netconfig_queue_size);
let num_queues = parser
.convert("num_queues")
.map_err(Error::ParseNetwork)?
.unwrap_or_else(default_netconfig_num_queues);
let vhost_user = parser
.convert::<Toggle>("vhost_user")
.map_err(Error::ParseNetwork)?
.unwrap_or(Toggle(false))
.0;
let vhost_socket = parser.get("socket");
let id = parser.get("id");
let config = NetConfig {
tap,
ip,
mask,
mac,
host_mac,
iommu,
num_queues,
queue_size,
vhost_user,
vhost_socket,
id,
};
config.validate().map_err(Error::Validation)?;
Ok(config)
}
pub fn validate(&self) -> ValidationResult<()> {
if self.num_queues < 2 {
return Err(ValidationError::VnetQueueLowerThan2);
}
Ok(())
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct RngConfig {
pub src: PathBuf,
#[serde(default)]
pub iommu: bool,
}
impl RngConfig {
pub fn parse(rng: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser.add("src").add("iommu");
parser.parse(rng).map_err(Error::ParseRNG)?;
let src = PathBuf::from(
parser
.get("src")
.unwrap_or_else(|| DEFAULT_RNG_SOURCE.to_owned()),
);
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParseRNG)?
.unwrap_or(Toggle(false))
.0;
Ok(RngConfig { src, iommu })
}
}
impl Default for RngConfig {
fn default() -> Self {
RngConfig {
src: PathBuf::from(DEFAULT_RNG_SOURCE),
iommu: false,
}
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct FsConfig {
pub tag: String,
pub socket: PathBuf,
#[serde(default = "default_fsconfig_num_queues")]
pub num_queues: usize,
#[serde(default = "default_fsconfig_queue_size")]
pub queue_size: u16,
#[serde(default = "default_fsconfig_dax")]
pub dax: bool,
#[serde(default = "default_fsconfig_cache_size")]
pub cache_size: u64,
#[serde(default)]
pub id: Option<String>,
}
fn default_fsconfig_num_queues() -> usize {
1
}
fn default_fsconfig_queue_size() -> u16 {
1024
}
fn default_fsconfig_dax() -> bool {
true
}
fn default_fsconfig_cache_size() -> u64 {
0x0002_0000_0000
}
impl Default for FsConfig {
fn default() -> Self {
Self {
tag: "".to_owned(),
socket: PathBuf::new(),
num_queues: default_fsconfig_num_queues(),
queue_size: default_fsconfig_queue_size(),
dax: default_fsconfig_dax(),
cache_size: default_fsconfig_cache_size(),
id: None,
}
}
}
impl FsConfig {
pub const SYNTAX: &'static str = "virtio-fs parameters \
\"tag=<tag_name>,socket=<socket_path>,num_queues=<number_of_queues>,\
queue_size=<size_of_each_queue>,dax=on|off,cache_size=<DAX cache size: \
default 8Gib>,id=<device_id>\"";
pub fn parse(fs: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("tag")
.add("dax")
.add("cache_size")
.add("queue_size")
.add("num_queues")
.add("socket")
.add("id");
parser.parse(fs).map_err(Error::ParseFileSystem)?;
let tag = parser.get("tag").ok_or(Error::ParseFsTagMissing)?;
let socket = PathBuf::from(parser.get("socket").ok_or(Error::ParseFsSockMissing)?);
let queue_size = parser
.convert("queue_size")
.map_err(Error::ParseFileSystem)?
.unwrap_or_else(default_fsconfig_queue_size);
let num_queues = parser
.convert("num_queues")
.map_err(Error::ParseFileSystem)?
.unwrap_or_else(default_fsconfig_num_queues);
let dax = parser
.convert::<Toggle>("dax")
.map_err(Error::ParseFileSystem)?
.unwrap_or_else(|| Toggle(default_fsconfig_dax()))
.0;
if parser.is_set("cache_size") && !dax {
return Err(Error::InvalidCacheSizeWithDaxOff);
}
let cache_size = parser
.convert::<ByteSized>("cache_size")
.map_err(Error::ParseFileSystem)?
.unwrap_or_else(|| ByteSized(default_fsconfig_cache_size()))
.0;
let id = parser.get("id");
Ok(FsConfig {
tag,
socket,
num_queues,
queue_size,
dax,
cache_size,
id,
})
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct PmemConfig {
pub file: PathBuf,
#[serde(default)]
pub size: Option<u64>,
#[serde(default)]
pub iommu: bool,
#[serde(default)]
pub mergeable: bool,
#[serde(default)]
pub discard_writes: bool,
#[serde(default)]
pub id: Option<String>,
}
impl PmemConfig {
pub const SYNTAX: &'static str = "Persistent memory parameters \
\"file=<backing_file_path>,size=<persistent_memory_size>,iommu=on|off,\
mergeable=on|off,discard_writes=on|off,id=<device_id>\"";
pub fn parse(pmem: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("size")
.add("file")
.add("mergeable")
.add("iommu")
.add("discard_writes")
.add("id");
parser.parse(pmem).map_err(Error::ParsePersistentMemory)?;
let file = PathBuf::from(parser.get("file").ok_or(Error::ParsePmemFileMissing)?);
let size = parser
.convert::<ByteSized>("size")
.map_err(Error::ParsePersistentMemory)?
.map(|v| v.0);
let mergeable = parser
.convert::<Toggle>("mergeable")
.map_err(Error::ParsePersistentMemory)?
.unwrap_or(Toggle(false))
.0;
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParsePersistentMemory)?
.unwrap_or(Toggle(false))
.0;
let discard_writes = parser
.convert::<Toggle>("discard_writes")
.map_err(Error::ParsePersistentMemory)?
.unwrap_or(Toggle(false))
.0;
let id = parser.get("id");
Ok(PmemConfig {
file,
size,
iommu,
mergeable,
discard_writes,
id,
})
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub enum ConsoleOutputMode {
Off,
Tty,
File,
Null,
}
impl ConsoleOutputMode {
pub fn input_enabled(&self) -> bool {
matches!(self, ConsoleOutputMode::Tty)
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct ConsoleConfig {
#[serde(default = "default_consoleconfig_file")]
pub file: Option<PathBuf>,
pub mode: ConsoleOutputMode,
#[serde(default)]
pub iommu: bool,
}
fn default_consoleconfig_file() -> Option<PathBuf> {
None
}
impl ConsoleConfig {
pub fn parse(console: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add_valueless("off")
.add_valueless("tty")
.add_valueless("null")
.add("file")
.add("iommu");
parser.parse(console).map_err(Error::ParseConsole)?;
let mut file: Option<PathBuf> = default_consoleconfig_file();
let mut mode: ConsoleOutputMode = ConsoleOutputMode::Off;
if parser.is_set("off") {
} else if parser.is_set("tty") {
mode = ConsoleOutputMode::Tty
} else if parser.is_set("null") {
mode = ConsoleOutputMode::Null
} else if parser.is_set("file") {
mode = ConsoleOutputMode::File;
file =
Some(PathBuf::from(parser.get("file").ok_or(
Error::Validation(ValidationError::ConsoleFileMissing),
)?));
} else {
return Err(Error::ParseConsoleInvalidModeGiven);
}
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParseConsole)?
.unwrap_or(Toggle(false))
.0;
Ok(Self { mode, file, iommu })
}
pub fn default_serial() -> Self {
ConsoleConfig {
file: None,
mode: ConsoleOutputMode::Null,
iommu: false,
}
}
pub fn default_console() -> Self {
ConsoleConfig {
file: None,
mode: ConsoleOutputMode::Tty,
iommu: false,
}
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct DeviceConfig {
pub path: PathBuf,
#[serde(default)]
pub iommu: bool,
#[serde(default)]
pub id: Option<String>,
}
impl DeviceConfig {
pub const SYNTAX: &'static str =
"Direct device assignment parameters \"path=<device_path>,iommu=on|off,id=<device_id>\"";
pub fn parse(device: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser.add("path").add("id").add("iommu");
parser.parse(device).map_err(Error::ParseDevice)?;
let path = parser
.get("path")
.map(PathBuf::from)
.ok_or(Error::ParseDevicePathMissing)?;
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParseDevice)?
.unwrap_or(Toggle(false))
.0;
let id = parser.get("id");
Ok(DeviceConfig { path, iommu, id })
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct VsockConfig {
pub cid: u64,
pub socket: PathBuf,
#[serde(default)]
pub iommu: bool,
#[serde(default)]
pub id: Option<String>,
}
impl VsockConfig {
pub const SYNTAX: &'static str = "Virtio VSOCK parameters \
\"cid=<context_id>,socket=<socket_path>,iommu=on|off,id=<device_id>\"";
pub fn parse(vsock: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser.add("socket").add("cid").add("iommu").add("id");
parser.parse(vsock).map_err(Error::ParseVsock)?;
let socket = parser
.get("socket")
.map(PathBuf::from)
.ok_or(Error::ParseVsockSockMissing)?;
let iommu = parser
.convert::<Toggle>("iommu")
.map_err(Error::ParseVsock)?
.unwrap_or(Toggle(false))
.0;
let cid = parser
.convert("cid")
.map_err(Error::ParseVsock)?
.ok_or(Error::ParseVsockCidMissing)?;
let id = parser.get("id");
Ok(VsockConfig {
cid,
socket,
iommu,
id,
})
}
}
#[cfg(target_arch = "x86_64")]
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct SgxEpcConfig {
#[serde(default)]
pub size: u64,
#[serde(default)]
pub prefault: bool,
}
#[cfg(target_arch = "x86_64")]
impl SgxEpcConfig {
pub const SYNTAX: &'static str = "SGX EPC parameters \
\"size=<epc_section_size>,prefault=on|off\"";
pub fn parse(sgx_epc: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser.add("size").add("prefault");
parser.parse(sgx_epc).map_err(Error::ParseSgxEpc)?;
let size = parser
.convert::<ByteSized>("size")
.map_err(Error::ParseSgxEpc)?
.unwrap_or(ByteSized(0))
.0;
let prefault = parser
.convert::<Toggle>("prefault")
.map_err(Error::ParseSgxEpc)?
.unwrap_or(Toggle(false))
.0;
Ok(SgxEpcConfig { size, prefault })
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct NumaDistance {
#[serde(default)]
pub destination: u32,
#[serde(default)]
pub distance: u8,
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct NumaConfig {
#[serde(default)]
pub guest_numa_id: u32,
#[serde(default)]
pub cpus: Option<Vec<u8>>,
#[serde(default)]
pub distances: Option<Vec<NumaDistance>>,
#[serde(default)]
pub memory_zones: Option<Vec<String>>,
}
impl NumaConfig {
pub const SYNTAX: &'static str = "Settings related to a given NUMA node \
\"guest_numa_id=<node_id>,cpus=<cpus_id>,distances=<list_of_distances_to_destination_nodes>,\
memory_zones=<list_of_memory_zones>\"";
pub fn parse(numa: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser
.add("guest_numa_id")
.add("cpus")
.add("distances")
.add("memory_zones");
parser.parse(numa).map_err(Error::ParseNuma)?;
let guest_numa_id = parser
.convert::<u32>("guest_numa_id")
.map_err(Error::ParseNuma)?
.unwrap_or(0);
let cpus = parser
.convert::<IntegerList>("cpus")
.map_err(Error::ParseNuma)?
.map(|v| v.0.iter().map(|e| *e as u8).collect());
let distances = parser
.convert::<TupleTwoIntegers>("distances")
.map_err(Error::ParseNuma)?
.map(|v| {
v.0.iter()
.map(|(e1, e2)| NumaDistance {
destination: *e1 as u32,
distance: *e2 as u8,
})
.collect()
});
let memory_zones = parser
.convert::<StringList>("memory_zones")
.map_err(Error::ParseNuma)?
.map(|v| v.0);
Ok(NumaConfig {
guest_numa_id,
cpus,
distances,
memory_zones,
})
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize, Default)]
pub struct RestoreConfig {
pub source_url: PathBuf,
#[serde(default)]
pub prefault: bool,
}
impl RestoreConfig {
pub const SYNTAX: &'static str = "Restore from a VM snapshot. \
\nRestore parameters \"source_url=<source_url>,prefault=on|off\" \
\n`source_url` should be a valid URL (e.g file:///foo/bar or tcp://192.168.1.10/foo) \
\n`prefault` brings memory pages in when enabled (disabled by default)";
pub fn parse(restore: &str) -> Result<Self> {
let mut parser = OptionParser::new();
parser.add("source_url").add("prefault");
parser.parse(restore).map_err(Error::ParseRestore)?;
let source_url = parser
.get("source_url")
.map(PathBuf::from)
.ok_or(Error::ParseRestoreSourceUrlMissing)?;
let prefault = parser
.convert::<Toggle>("prefault")
.map_err(Error::ParseRestore)?
.unwrap_or(Toggle(false))
.0;
Ok(RestoreConfig {
source_url,
prefault,
})
}
}
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
pub struct VmConfig {
#[serde(default)]
pub cpus: CpusConfig,
#[serde(default)]
pub memory: MemoryConfig,
pub kernel: Option<KernelConfig>,
#[serde(default)]
pub initramfs: Option<InitramfsConfig>,
#[serde(default)]
pub cmdline: CmdlineConfig,
pub disks: Option<Vec<DiskConfig>>,
pub net: Option<Vec<NetConfig>>,
#[serde(default)]
pub rng: RngConfig,
pub fs: Option<Vec<FsConfig>>,
pub pmem: Option<Vec<PmemConfig>>,
#[serde(default = "ConsoleConfig::default_serial")]
pub serial: ConsoleConfig,
#[serde(default = "ConsoleConfig::default_console")]
pub console: ConsoleConfig,
pub devices: Option<Vec<DeviceConfig>>,
pub vsock: Option<VsockConfig>,
#[serde(default)]
pub iommu: bool,
#[cfg(target_arch = "x86_64")]
pub sgx_epc: Option<Vec<SgxEpcConfig>>,
pub numa: Option<Vec<NumaConfig>>,
}
impl VmConfig {
pub fn validate(&self) -> ValidationResult<()> {
self.kernel.as_ref().ok_or(ValidationError::KernelMissing)?;
if self.console.mode == ConsoleOutputMode::Tty && self.serial.mode == ConsoleOutputMode::Tty
{
return Err(ValidationError::DoubleTtyMode);
}
if self.console.mode == ConsoleOutputMode::File && self.console.file.is_none() {
return Err(ValidationError::ConsoleFileMissing);
}
if self.serial.mode == ConsoleOutputMode::File && self.serial.file.is_none() {
return Err(ValidationError::ConsoleFileMissing);
}
if self.cpus.max_vcpus < self.cpus.boot_vcpus {
return Err(ValidationError::CpusMaxLowerThanBoot);
}
if let Some(disks) = &self.disks {
for disk in disks {
if disk.vhost_socket.as_ref().and(disk.path.as_ref()).is_some() {
return Err(ValidationError::DiskSocketAndPath);
}
if disk.vhost_user && !self.memory.shared {
return Err(ValidationError::VhostUserRequiresSharedMemory);
}
}
}
if let Some(nets) = &self.net {
for net in nets {
if net.vhost_user && !self.memory.shared {
return Err(ValidationError::VhostUserRequiresSharedMemory);
}
}
}
if let Some(fses) = &self.fs {
if !fses.is_empty() && !self.memory.shared {
return Err(ValidationError::VhostUserRequiresSharedMemory);
}
}
if let Some(t) = &self.cpus.topology {
if t.threads_per_core == 0
|| t.cores_per_die == 0
|| t.dies_per_package == 0
|| t.packages == 0
{
return Err(ValidationError::CpuTopologyZeroPart);
}
let total = t.threads_per_core * t.cores_per_die * t.dies_per_package * t.packages;
if total != self.cpus.max_vcpus {
return Err(ValidationError::CpuTopologyCount);
}
}
Ok(())
}
pub fn parse(vm_params: VmParams) -> Result<Self> {
let mut iommu = false;
let mut disks: Option<Vec<DiskConfig>> = None;
if let Some(disk_list) = &vm_params.disks {
let mut disk_config_list = Vec::new();
for item in disk_list.iter() {
let disk_config = DiskConfig::parse(item)?;
if disk_config.iommu {
iommu = true;
}
disk_config_list.push(disk_config);
}
disks = Some(disk_config_list);
}
let mut net: Option<Vec<NetConfig>> = None;
if let Some(net_list) = &vm_params.net {
let mut net_config_list = Vec::new();
for item in net_list.iter() {
let net_config = NetConfig::parse(item)?;
if net_config.iommu {
iommu = true;
}
net_config_list.push(net_config);
}
net = Some(net_config_list);
}
let rng = RngConfig::parse(vm_params.rng)?;
if rng.iommu {
iommu = true;
}
let mut fs: Option<Vec<FsConfig>> = None;
if let Some(fs_list) = &vm_params.fs {
let mut fs_config_list = Vec::new();
for item in fs_list.iter() {
fs_config_list.push(FsConfig::parse(item)?);
}
fs = Some(fs_config_list);
}
let mut pmem: Option<Vec<PmemConfig>> = None;
if let Some(pmem_list) = &vm_params.pmem {
let mut pmem_config_list = Vec::new();
for item in pmem_list.iter() {
let pmem_config = PmemConfig::parse(item)?;
if pmem_config.iommu {
iommu = true;
}
pmem_config_list.push(pmem_config);
}
pmem = Some(pmem_config_list);
}
let console = ConsoleConfig::parse(vm_params.console)?;
if console.iommu {
iommu = true;
}
let serial = ConsoleConfig::parse(vm_params.serial)?;
let mut devices: Option<Vec<DeviceConfig>> = None;
if let Some(device_list) = &vm_params.devices {
let mut device_config_list = Vec::new();
for item in device_list.iter() {
let device_config = DeviceConfig::parse(item)?;
if device_config.iommu {
iommu = true;
}
device_config_list.push(device_config);
}
devices = Some(device_config_list);
}
let mut vsock: Option<VsockConfig> = None;
if let Some(vs) = &vm_params.vsock {
let vsock_config = VsockConfig::parse(vs)?;
if vsock_config.iommu {
iommu = true;
}
vsock = Some(vsock_config);
}
#[cfg(target_arch = "x86_64")]
let mut sgx_epc: Option<Vec<SgxEpcConfig>> = None;
#[cfg(target_arch = "x86_64")]
{
if let Some(sgx_epc_list) = &vm_params.sgx_epc {
let mut sgx_epc_config_list = Vec::new();
for item in sgx_epc_list.iter() {
let sgx_epc_config = SgxEpcConfig::parse(item)?;
sgx_epc_config_list.push(sgx_epc_config);
}
sgx_epc = Some(sgx_epc_config_list);
}
}
let mut numa: Option<Vec<NumaConfig>> = None;
if let Some(numa_list) = &vm_params.numa {
let mut numa_config_list = Vec::new();
for item in numa_list.iter() {
let numa_config = NumaConfig::parse(item)?;
numa_config_list.push(numa_config);
}
numa = Some(numa_config_list);
}
let mut kernel: Option<KernelConfig> = None;
if let Some(k) = vm_params.kernel {
kernel = Some(KernelConfig {
path: PathBuf::from(k),
});
}
let mut initramfs: Option<InitramfsConfig> = None;
if let Some(k) = vm_params.initramfs {
initramfs = Some(InitramfsConfig {
path: PathBuf::from(k),
});
}
let config = VmConfig {
cpus: CpusConfig::parse(vm_params.cpus)?,
memory: MemoryConfig::parse(vm_params.memory, vm_params.memory_zones)?,
kernel,
initramfs,
cmdline: CmdlineConfig::parse(vm_params.cmdline)?,
disks,
net,
rng,
fs,
pmem,
serial,
console,
devices,
vsock,
iommu,
#[cfg(target_arch = "x86_64")]
sgx_epc,
numa,
};
config.validate().map_err(Error::Validation)?;
Ok(config)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_option_parser() -> std::result::Result<(), OptionParserError> {
let mut parser = OptionParser::new();
parser
.add("size")
.add("mergeable")
.add("hotplug_method")
.add("hotplug_size");
assert!(parser.parse("size=128M,hanging_param").is_err());
assert!(parser.parse("size=128M,too_many_equals=foo=bar").is_err());
assert!(parser.parse("size=128M,file=/dev/shm").is_err());
assert!(parser.parse("size=128M").is_ok());
assert_eq!(parser.get("size"), Some("128M".to_owned()));
assert!(!parser.is_set("mergeable"));
assert!(parser.is_set("size"));
Ok(())
}
#[test]
fn test_cpu_parsing() -> Result<()> {
assert_eq!(CpusConfig::parse("")?, CpusConfig::default());
assert_eq!(
CpusConfig::parse("boot=1")?,
CpusConfig {
boot_vcpus: 1,
max_vcpus: 1,
..Default::default()
}
);
assert_eq!(
CpusConfig::parse("boot=1,max=2")?,
CpusConfig {
boot_vcpus: 1,
max_vcpus: 2,
..Default::default()
}
);
assert_eq!(
CpusConfig::parse("boot=8,topology=2:2:1:2")?,
CpusConfig {
boot_vcpus: 8,
max_vcpus: 8,
topology: Some(CpuTopology {
threads_per_core: 2,
cores_per_die: 2,
dies_per_package: 1,
packages: 2
}),
..Default::default()
}
);
assert!(CpusConfig::parse("boot=8,topology=2:2:1").is_err());
assert!(CpusConfig::parse("boot=8,topology=2:2:1:x").is_err());
assert_eq!(
CpusConfig::parse("boot=1,kvm_hyperv=on")?,
CpusConfig {
boot_vcpus: 1,
max_vcpus: 1,
kvm_hyperv: true,
..Default::default()
}
);
Ok(())
}
#[test]
fn test_mem_parsing() -> Result<()> {
assert_eq!(MemoryConfig::parse("", None)?, MemoryConfig::default());
// Default string
assert_eq!(
MemoryConfig::parse("size=512M", None)?,
MemoryConfig::default()
);
assert_eq!(
MemoryConfig::parse("size=512M,mergeable=on", None)?,
MemoryConfig {
size: 512 << 20,
mergeable: true,
..Default::default()
}
);
assert_eq!(
MemoryConfig::parse("mergeable=on", None)?,
MemoryConfig {
mergeable: true,
..Default::default()
}
);
assert_eq!(
MemoryConfig::parse("size=1G,mergeable=off", None)?,
MemoryConfig {
size: 1 << 30,
mergeable: false,
..Default::default()
}
);
assert_eq!(
MemoryConfig::parse("hotplug_method=acpi", None)?,
MemoryConfig {
..Default::default()
}
);
assert_eq!(
MemoryConfig::parse("hotplug_method=acpi,hotplug_size=512M", None)?,
MemoryConfig {
hotplug_size: Some(512 << 20),
..Default::default()
}
);
assert_eq!(
MemoryConfig::parse("hotplug_method=virtio-mem,hotplug_size=512M", None)?,
MemoryConfig {
hotplug_size: Some(512 << 20),
hotplug_method: HotplugMethod::VirtioMem,
..Default::default()
}
);
Ok(())
}
#[test]
fn test_disk_parsing() -> Result<()> {
assert_eq!(
DiskConfig::parse("path=/path/to_file")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,id=mydisk0")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
id: Some("mydisk0".to_owned()),
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,vhost_user=true")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
vhost_user: true,
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,iommu=on")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
iommu: true,
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,iommu=on,queue_size=256")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
iommu: true,
queue_size: 256,
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,iommu=on,queue_size=256,num_queues=4")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
iommu: true,
queue_size: 256,
num_queues: 4,
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,direct=on")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
direct: true,
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,poll_queue=false")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
poll_queue: false,
..Default::default()
}
);
assert_eq!(
DiskConfig::parse("path=/path/to_file,poll_queue=true")?,
DiskConfig {
path: Some(PathBuf::from("/path/to_file")),
poll_queue: true,
..Default::default()
}
);
Ok(())
}
#[test]
fn test_net_parsing() -> Result<()> {
// mac address is random
assert_eq!(
NetConfig::parse("mac=de:ad:be:ef:12:34,host_mac=12:34:de:ad:be:ef")?,
NetConfig {
mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
..Default::default()
}
);
assert_eq!(
NetConfig::parse("mac=de:ad:be:ef:12:34,host_mac=12:34:de:ad:be:ef,id=mynet0")?,
NetConfig {
mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
id: Some("mynet0".to_owned()),
..Default::default()
}
);
assert_eq!(
NetConfig::parse(
"mac=de:ad:be:ef:12:34,host_mac=12:34:de:ad:be:ef,tap=tap0,ip=192.168.100.1,mask=255.255.255.128"
)?,
NetConfig {
mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
tap: Some("tap0".to_owned()),
ip: "192.168.100.1".parse().unwrap(),
mask: "255.255.255.128".parse().unwrap(),
..Default::default()
}
);
assert_eq!(
NetConfig::parse(
"mac=de:ad:be:ef:12:34,host_mac=12:34:de:ad:be:ef,vhost_user=true,socket=/tmp/sock"
)?,
NetConfig {
mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
vhost_user: true,
vhost_socket: Some("/tmp/sock".to_owned()),
..Default::default()
}
);
assert_eq!(
NetConfig::parse("mac=de:ad:be:ef:12:34,host_mac=12:34:de:ad:be:ef,num_queues=4,queue_size=1024,iommu=on")?,
NetConfig {
mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
num_queues: 4,
queue_size: 1024,
iommu: true,
..Default::default()
}
);
Ok(())
}
#[test]
fn test_parse_rng() -> Result<()> {
assert_eq!(RngConfig::parse("")?, RngConfig::default());
assert_eq!(
RngConfig::parse("src=/dev/random")?,
RngConfig {
src: PathBuf::from("/dev/random"),
..Default::default()
}
);
assert_eq!(
RngConfig::parse("src=/dev/random,iommu=on")?,
RngConfig {
src: PathBuf::from("/dev/random"),
iommu: true,
}
);
assert_eq!(
RngConfig::parse("iommu=on")?,
RngConfig {
iommu: true,
..Default::default()
}
);
Ok(())
}
#[test]
fn test_parse_fs() -> Result<()> {
// "tag" and "socket" must be supplied
assert!(FsConfig::parse("").is_err());
assert!(FsConfig::parse("tag=mytag").is_err());
assert!(FsConfig::parse("socket=/tmp/sock").is_err());
assert_eq!(
FsConfig::parse("tag=mytag,socket=/tmp/sock")?,
FsConfig {
socket: PathBuf::from("/tmp/sock"),
tag: "mytag".to_owned(),
..Default::default()
}
);
assert_eq!(
FsConfig::parse("tag=mytag,socket=/tmp/sock")?,
FsConfig {
socket: PathBuf::from("/tmp/sock"),
tag: "mytag".to_owned(),
..Default::default()
}
);
assert_eq!(
FsConfig::parse("tag=mytag,socket=/tmp/sock,num_queues=4,queue_size=1024")?,
FsConfig {
socket: PathBuf::from("/tmp/sock"),
tag: "mytag".to_owned(),
num_queues: 4,
queue_size: 1024,
..Default::default()
}
);
// DAX on -> default cache size
assert_eq!(
FsConfig::parse("tag=mytag,socket=/tmp/sock,dax=on")?,
FsConfig {
socket: PathBuf::from("/tmp/sock"),
tag: "mytag".to_owned(),
dax: true,
cache_size: default_fsconfig_cache_size(),
..Default::default()
}
);
assert_eq!(
FsConfig::parse("tag=mytag,socket=/tmp/sock,dax=on,cache_size=4G")?,
FsConfig {
socket: PathBuf::from("/tmp/sock"),
tag: "mytag".to_owned(),
dax: true,
cache_size: 4 << 30,
..Default::default()
}
);
// Cache size without DAX is an error
assert!(FsConfig::parse("tag=mytag,socket=/tmp/sock,dax=off,cache_size=4G").is_err());
Ok(())
}
#[test]
fn test_pmem_parsing() -> Result<()> {
// Must always give a file and size
assert!(PmemConfig::parse("").is_err());
assert!(PmemConfig::parse("size=128M").is_err());
assert_eq!(
PmemConfig::parse("file=/tmp/pmem,size=128M")?,
PmemConfig {
file: PathBuf::from("/tmp/pmem"),
size: Some(128 << 20),
..Default::default()
}
);
assert_eq!(
PmemConfig::parse("file=/tmp/pmem,size=128M,id=mypmem0")?,
PmemConfig {
file: PathBuf::from("/tmp/pmem"),
size: Some(128 << 20),
id: Some("mypmem0".to_owned()),
..Default::default()
}
);
assert_eq!(
PmemConfig::parse("file=/tmp/pmem,size=128M,iommu=on,mergeable=on,discard_writes=on")?,
PmemConfig {
file: PathBuf::from("/tmp/pmem"),
size: Some(128 << 20),
mergeable: true,
discard_writes: true,
iommu: true,
..Default::default()
}
);
Ok(())
}
#[test]
fn test_console_parsing() -> Result<()> {
assert!(ConsoleConfig::parse("").is_err());
assert!(ConsoleConfig::parse("badmode").is_err());
assert_eq!(
ConsoleConfig::parse("off")?,
ConsoleConfig {
mode: ConsoleOutputMode::Off,
iommu: false,
file: None,
}
);
assert_eq!(
ConsoleConfig::parse("tty")?,
ConsoleConfig {
mode: ConsoleOutputMode::Tty,
iommu: false,
file: None,
}
);
assert_eq!(
ConsoleConfig::parse("null")?,
ConsoleConfig {
mode: ConsoleOutputMode::Null,
iommu: false,
file: None,
}
);
assert_eq!(
ConsoleConfig::parse("file=/tmp/console")?,
ConsoleConfig {
mode: ConsoleOutputMode::File,
iommu: false,
file: Some(PathBuf::from("/tmp/console"))
}
);
assert_eq!(
ConsoleConfig::parse("null,iommu=on")?,
ConsoleConfig {
mode: ConsoleOutputMode::Null,
iommu: true,
file: None,
}
);
assert_eq!(
ConsoleConfig::parse("file=/tmp/console,iommu=on")?,
ConsoleConfig {
mode: ConsoleOutputMode::File,
iommu: true,
file: Some(PathBuf::from("/tmp/console"))
}
);
Ok(())
}
#[test]
fn test_device_parsing() -> Result<()> {
// Device must have a path provided
assert!(DeviceConfig::parse("").is_err());
assert_eq!(
DeviceConfig::parse("path=/path/to/device")?,
DeviceConfig {
path: PathBuf::from("/path/to/device"),
id: None,
iommu: false
}
);
assert_eq!(
DeviceConfig::parse("path=/path/to/device,iommu=on")?,
DeviceConfig {
path: PathBuf::from("/path/to/device"),
id: None,
iommu: true
}
);
assert_eq!(
DeviceConfig::parse("path=/path/to/device,iommu=on,id=mydevice0")?,
DeviceConfig {
path: PathBuf::from("/path/to/device"),
id: Some("mydevice0".to_owned()),
iommu: true
}
);
Ok(())
}
#[test]
fn test_vsock_parsing() -> Result<()> {
// socket and cid is required
assert!(VsockConfig::parse("").is_err());
assert_eq!(
VsockConfig::parse("socket=/tmp/sock,cid=1")?,
VsockConfig {
cid: 1,
socket: PathBuf::from("/tmp/sock"),
iommu: false,
id: None,
}
);
assert_eq!(
VsockConfig::parse("socket=/tmp/sock,cid=1,iommu=on")?,
VsockConfig {
cid: 1,
socket: PathBuf::from("/tmp/sock"),
iommu: true,
id: None,
}
);
Ok(())
}
#[test]
fn test_config_validation() -> Result<()> {
let valid_config = VmConfig {
cpus: CpusConfig {
boot_vcpus: 1,
max_vcpus: 1,
..Default::default()
},
memory: MemoryConfig {
size: 536_870_912,
mergeable: false,
hotplug_method: HotplugMethod::Acpi,
hotplug_size: None,
hotplugged_size: None,
shared: false,
hugepages: false,
balloon: false,
balloon_size: 0,
zones: None,
},
kernel: Some(KernelConfig {
path: PathBuf::from("/path/to/kernel"),
}),
initramfs: None,
cmdline: CmdlineConfig {
args: String::from(""),
},
disks: None,
net: None,
rng: RngConfig {
src: PathBuf::from("/dev/urandom"),
iommu: false,
},
fs: None,
pmem: None,
serial: ConsoleConfig {
file: None,
mode: ConsoleOutputMode::Null,
iommu: false,
},
console: ConsoleConfig {
file: None,
mode: ConsoleOutputMode::Tty,
iommu: false,
},
devices: None,
vsock: None,
iommu: false,
#[cfg(target_arch = "x86_64")]
sgx_epc: None,
numa: None,
};
assert!(valid_config.validate().is_ok());
let mut invalid_config = valid_config.clone();
invalid_config.serial.mode = ConsoleOutputMode::Tty;
invalid_config.console.mode = ConsoleOutputMode::Tty;
assert!(invalid_config.validate().is_err());
let mut invalid_config = valid_config.clone();
invalid_config.kernel = None;
assert!(invalid_config.validate().is_err());
let mut invalid_config = valid_config.clone();
invalid_config.serial.mode = ConsoleOutputMode::File;
invalid_config.serial.file = None;
assert!(invalid_config.validate().is_err());
let mut invalid_config = valid_config.clone();
invalid_config.cpus.max_vcpus = 16;
invalid_config.cpus.boot_vcpus = 32;
assert!(invalid_config.validate().is_err());
let mut invalid_config = valid_config.clone();
invalid_config.cpus.max_vcpus = 16;
invalid_config.cpus.boot_vcpus = 16;
invalid_config.cpus.topology = Some(CpuTopology {
threads_per_core: 2,
cores_per_die: 8,
dies_per_package: 1,
packages: 2,
});
assert!(invalid_config.validate().is_err());
let mut invalid_config = valid_config.clone();
invalid_config.disks = Some(vec![DiskConfig {
vhost_socket: Some("/path/to/sock".to_owned()),
path: Some(PathBuf::from("/path/to/image")),
..Default::default()
}]);
assert!(invalid_config.validate().is_err());
let mut invalid_config = valid_config.clone();
invalid_config.disks = Some(vec![DiskConfig {
vhost_user: true,
..Default::default()
}]);
assert!(invalid_config.validate().is_err());
let mut still_valid_config = valid_config.clone();
still_valid_config.disks = Some(vec![DiskConfig {
vhost_user: true,
..Default::default()
}]);
still_valid_config.memory.shared = true;
assert!(still_valid_config.validate().is_ok());
let mut invalid_config = valid_config.clone();
invalid_config.net = Some(vec![NetConfig {
vhost_user: true,
..Default::default()
}]);
assert!(invalid_config.validate().is_err());
let mut still_valid_config = valid_config.clone();
still_valid_config.net = Some(vec![NetConfig {
vhost_user: true,
..Default::default()
}]);
still_valid_config.memory.shared = true;
assert!(still_valid_config.validate().is_ok());
let mut invalid_config = valid_config.clone();
invalid_config.fs = Some(vec![FsConfig {
..Default::default()
}]);
assert!(invalid_config.validate().is_err());
let mut still_valid_config = valid_config.clone();
invalid_config.fs = Some(vec![FsConfig {
..Default::default()
}]);
still_valid_config.memory.shared = true;
assert!(still_valid_config.validate().is_ok());
Ok(())
}
}