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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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vhost-user_net, vm-virtio, vmm: Permit host MAC address setting
Add a new "host_mac" parameter to "--net" and "--net-backend" and use this to set the MAC address on the tap interface. If no address is given one is randomly assigned and is stored in the config. Support for vhost-user-net self spawning was also included. Fixes: #1177 Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
parent
11049401ce
commit
1b8b5ac179
48
src/main.rs
48
src/main.rs
@ -798,11 +798,11 @@ mod unit_tests {
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false,
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),
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(
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vec!["cloud-hypervisor", "--kernel", "/path/to/kernel", "--net", "mac=12:34:56:78:90:ab"],
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vec!["cloud-hypervisor", "--kernel", "/path/to/kernel", "--net", "mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd"],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab"}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd"}
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]
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}"#,
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true,
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@ -811,12 +811,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0"}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0"}
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]
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}"#,
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true,
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@ -825,12 +825,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4"}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4"}
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]
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}"#,
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true,
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@ -839,12 +839,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8"}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8"}
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]
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}"#,
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true,
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@ -853,12 +853,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=4",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=4",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 4}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 4}
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]
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}"#,
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true,
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@ -867,12 +867,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=4,queue_size=128",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=4,queue_size=128",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 4, "queue_size": 128}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 4, "queue_size": 128}
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]
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}"#,
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true,
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@ -881,12 +881,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8"}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8"}
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]
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}"#,
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true,
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@ -895,12 +895,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256}
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]
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}"#,
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true,
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@ -909,12 +909,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256,iommu=on",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256,iommu=on",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256, "iommu": true}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256, "iommu": true}
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]
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}"#,
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false,
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@ -923,12 +923,12 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256,iommu=on",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256,iommu=on",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256, "iommu": true}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256, "iommu": true}
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],
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"iommu": true
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}"#,
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@ -938,23 +938,23 @@ mod unit_tests {
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vec![
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"cloud-hypervisor", "--kernel", "/path/to/kernel",
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"--net",
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"mac=12:34:56:78:90:ab,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256,iommu=off",
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"mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,tap=tap0,ip=1.2.3.4,mask=5.6.7.8,num_queues=2,queue_size=256,iommu=off",
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],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"net": [
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{"mac": "12:34:56:78:90:ab", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256, "iommu": false}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "tap": "tap0", "ip": "1.2.3.4", "mask": "5.6.7.8", "num_queues": 2, "queue_size": 256, "iommu": false}
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]
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}"#,
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true,
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),
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(
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vec!["cloud-hypervisor", "--kernel", "/path/to/kernel", "--memory", "shared=true", "--net", "mac=12:34:56:78:90:ab,vhost_user=true,socket=/tmp/socket"],
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vec!["cloud-hypervisor", "--kernel", "/path/to/kernel", "--memory", "shared=true", "--net", "mac=12:34:56:78:90:ab,host_mac=34:56:78:90:ab:cd,vhost_user=true,socket=/tmp/socket"],
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r#"{
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"kernel": {"path": "/path/to/kernel"},
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"memory" : { "shared": true, "size": 536870912 },
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"net": [
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{"mac": "12:34:56:78:90:ab", "vhost_user": true, "vhost_socket": "/tmp/socket"}
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{"mac": "12:34:56:78:90:ab", "host_mac": "34:56:78:90:ab:cd", "vhost_user": true, "vhost_socket": "/tmp/socket"}
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]
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}"#,
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true,
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@ -16,7 +16,7 @@ extern crate vmm;
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use epoll;
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use libc::{self, EAGAIN, EFD_NONBLOCK};
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use log::*;
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use net_util::Tap;
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use net_util::{MacAddr, Tap};
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use std::fmt;
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use std::io::Read;
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use std::io::{self};
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@ -221,13 +221,20 @@ pub struct VhostUserNetBackend {
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impl VhostUserNetBackend {
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fn new(
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ip_addr: Ipv4Addr,
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host_mac: MacAddr,
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netmask: Ipv4Addr,
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num_queues: usize,
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queue_size: u16,
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ifname: Option<&str>,
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) -> Result<Self> {
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let mut taps = open_tap(ifname, Some(ip_addr), Some(netmask), num_queues / 2)
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.map_err(Error::OpenTap)?;
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let mut taps = open_tap(
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ifname,
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Some(ip_addr),
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Some(netmask),
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Some(host_mac),
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num_queues / 2,
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)
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.map_err(Error::OpenTap)?;
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let mut queues_per_thread = Vec::new();
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let mut threads = Vec::new();
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@ -351,6 +358,7 @@ impl VhostUserBackend for VhostUserNetBackend {
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pub struct VhostUserNetBackendConfig {
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pub ip: Ipv4Addr,
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pub host_mac: MacAddr,
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pub mask: Ipv4Addr,
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pub socket: String,
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pub num_queues: usize,
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@ -365,6 +373,7 @@ impl VhostUserNetBackendConfig {
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parser
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.add("tap")
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.add("ip")
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.add("host_mac")
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.add("mask")
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.add("queue_size")
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.add("num_queues")
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@ -377,6 +386,10 @@ impl VhostUserNetBackendConfig {
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.convert("ip")
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.map_err(Error::FailedConfigParse)?
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.unwrap_or_else(|| Ipv4Addr::new(192, 168, 100, 1));
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let host_mac = parser
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.convert("host_mac")
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.map_err(Error::FailedConfigParse)?
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.unwrap_or_else(MacAddr::local_random);
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let mask = parser
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.convert("mask")
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.map_err(Error::FailedConfigParse)?
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@ -393,6 +406,7 @@ impl VhostUserNetBackendConfig {
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Ok(VhostUserNetBackendConfig {
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ip,
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host_mac,
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mask,
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socket,
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num_queues,
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@ -420,6 +434,7 @@ pub fn start_net_backend(backend_command: &str) {
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let net_backend = Arc::new(RwLock::new(
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VhostUserNetBackend::new(
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backend_config.ip,
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backend_config.host_mac,
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backend_config.mask,
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backend_config.num_queues,
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backend_config.queue_size,
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@ -392,11 +392,13 @@ impl Net {
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ip_addr: Option<Ipv4Addr>,
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netmask: Option<Ipv4Addr>,
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guest_mac: Option<MacAddr>,
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host_mac: Option<MacAddr>,
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iommu: bool,
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num_queues: usize,
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queue_size: u16,
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) -> Result<Self> {
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let taps = open_tap(if_name, ip_addr, netmask, num_queues / 2).map_err(Error::OpenTap)?;
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let taps = open_tap(if_name, ip_addr, netmask, host_mac, num_queues / 2)
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.map_err(Error::OpenTap)?;
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Self::new_with_tap(id, taps, guest_mac, iommu, num_queues, queue_size)
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}
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@ -119,6 +119,8 @@ pub enum Error {
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TapSetIp(TapError),
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/// Setting tap netmask failed.
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TapSetNetmask(TapError),
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/// Setting MAC address failed
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TapSetMac(TapError),
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/// Setting tap interface offload flags failed.
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TapSetOffload(TapError),
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/// Setting vnet header size failed.
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@ -531,6 +533,7 @@ pub fn open_tap(
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if_name: Option<&str>,
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ip_addr: Option<Ipv4Addr>,
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netmask: Option<Ipv4Addr>,
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host_mac: Option<MacAddr>,
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num_rx_q: usize,
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) -> Result<Vec<Tap>> {
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let mut taps: Vec<Tap> = Vec::new();
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@ -558,6 +561,9 @@ pub fn open_tap(
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if let Some(mask) = netmask {
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tap.set_netmask(mask).map_err(Error::TapSetNetmask)?;
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}
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if let Some(mac) = host_mac {
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tap.set_mac_addr(mac).map_err(Error::TapSetMac)?
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}
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tap.enable().map_err(Error::TapEnable)?;
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tap.set_offload(flag).map_err(Error::TapSetOffload)?;
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@ -701,6 +701,8 @@ pub struct NetConfig {
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pub mask: Ipv4Addr,
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#[serde(default = "default_netconfig_mac")]
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pub mac: MacAddr,
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#[serde(default = "default_netconfig_mac")]
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pub host_mac: MacAddr,
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#[serde(default)]
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pub iommu: bool,
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#[serde(default = "default_netconfig_num_queues")]
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@ -745,6 +747,7 @@ impl Default for NetConfig {
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ip: default_netconfig_ip(),
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mask: default_netconfig_mask(),
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mac: default_netconfig_mac(),
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host_mac: default_netconfig_mac(),
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iommu: false,
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num_queues: default_netconfig_num_queues(),
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queue_size: default_netconfig_queue_size(),
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@ -769,6 +772,7 @@ impl NetConfig {
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.add("ip")
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.add("mask")
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.add("mac")
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.add("host_mac")
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.add("iommu")
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.add("queue_size")
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.add("num_queues")
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@ -790,6 +794,10 @@ impl NetConfig {
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.convert("mac")
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.map_err(Error::ParseNetwork)?
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.unwrap_or_else(default_netconfig_mac);
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let host_mac = parser
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.convert("host_mac")
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.map_err(Error::ParseNetwork)?
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.unwrap_or_else(default_netconfig_mac);
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let iommu = parser
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.convert::<Toggle>("iommu")
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.map_err(Error::ParseNetwork)?
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@ -816,6 +824,7 @@ impl NetConfig {
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ip,
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mask,
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mac,
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host_mac,
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iommu,
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num_queues,
|
||||
queue_size,
|
||||
@ -1641,17 +1650,19 @@ mod tests {
|
||||
fn test_net_parsing() -> Result<()> {
|
||||
// mac address is random
|
||||
assert_eq!(
|
||||
NetConfig::parse("mac=de:ad:be:ef:12:34")?,
|
||||
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: MacAddr::parse_str("12:34:de:ad:be:ef").unwrap(),
|
||||
..Default::default()
|
||||
}
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
NetConfig::parse("mac=de:ad:be:ef:12:34,id=mynet0")?,
|
||||
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: MacAddr::parse_str("12:34:de:ad:be:ef").unwrap(),
|
||||
id: Some("mynet0".to_owned()),
|
||||
..Default::default()
|
||||
}
|
||||
@ -1659,10 +1670,11 @@ mod tests {
|
||||
|
||||
assert_eq!(
|
||||
NetConfig::parse(
|
||||
"mac=de:ad:be:ef:12:34,tap=tap0,ip=192.168.100.1,mask=255.255.255.128"
|
||||
"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: 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(),
|
||||
@ -1671,9 +1683,10 @@ mod tests {
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
NetConfig::parse("mac=de:ad:be:ef:12:34,vhost_user=true,socket=/tmp/socket")?,
|
||||
NetConfig::parse("mac=de:ad:be:ef:12:34,host_mac=12:34:de:ad:be:ef,vhost_user=true,socket=/tmp/socket")?,
|
||||
NetConfig {
|
||||
mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
|
||||
host_mac: MacAddr::parse_str("12:34:de:ad:be:ef").unwrap(),
|
||||
vhost_user: true,
|
||||
vhost_socket: Some("/tmp/socket".to_owned()),
|
||||
..Default::default()
|
||||
@ -1681,9 +1694,10 @@ mod tests {
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
NetConfig::parse("mac=de:ad:be:ef:12:34,num_queues=4,queue_size=1024,iommu=on")?,
|
||||
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: MacAddr::parse_str("12:34:de:ad:be:ef").unwrap(),
|
||||
num_queues: 4,
|
||||
queue_size: 1024,
|
||||
iommu: true,
|
||||
|
||||
@ -1463,8 +1463,13 @@ impl DeviceManager {
|
||||
.args(&[
|
||||
"--net-backend",
|
||||
&format!(
|
||||
"ip={},mask={},socket={},num_queues={},queue_size={}",
|
||||
net_cfg.ip, net_cfg.mask, &sock, net_cfg.num_queues, net_cfg.queue_size
|
||||
"ip={},mask={},socket={},num_queues={},queue_size={},host_mac={}",
|
||||
net_cfg.ip,
|
||||
net_cfg.mask,
|
||||
&sock,
|
||||
net_cfg.num_queues,
|
||||
net_cfg.queue_size,
|
||||
net_cfg.host_mac
|
||||
),
|
||||
])
|
||||
.spawn()
|
||||
@ -1529,6 +1534,7 @@ impl DeviceManager {
|
||||
None,
|
||||
None,
|
||||
Some(net_cfg.mac),
|
||||
Some(net_cfg.host_mac),
|
||||
net_cfg.iommu,
|
||||
net_cfg.num_queues,
|
||||
net_cfg.queue_size,
|
||||
@ -1543,6 +1549,7 @@ impl DeviceManager {
|
||||
Some(net_cfg.ip),
|
||||
Some(net_cfg.mask),
|
||||
Some(net_cfg.mac),
|
||||
Some(net_cfg.host_mac),
|
||||
net_cfg.iommu,
|
||||
net_cfg.num_queues,
|
||||
net_cfg.queue_size,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user