[pve-devel] [PATCH pve-network 7/7] zones: vxlan: add dhcp support
Alexandre Derumier
aderumier at odiso.com
Tue Dec 19 09:32:16 CET 2023
add gateway ip to vnet and force /32 for ipv4 to avoid
arp problem, and disable forwarding by security
Signed-off-by: Alexandre Derumier <aderumier at odiso.com>
---
src/PVE/Network/SDN/Zones/VxlanPlugin.pm | 32 +++++++++++++++++++
.../zones/vxlan/dhcp/expected_sdn_interfaces | 19 +++++++++++
src/test/zones/vxlan/dhcp/interfaces | 7 ++++
src/test/zones/vxlan/dhcp/sdn_config | 25 +++++++++++++++
.../vxlan/nodhcp/expected_sdn_interfaces | 15 +++++++++
src/test/zones/vxlan/nodhcp/interfaces | 7 ++++
src/test/zones/vxlan/nodhcp/sdn_config | 25 +++++++++++++++
7 files changed, 130 insertions(+)
create mode 100644 src/test/zones/vxlan/dhcp/expected_sdn_interfaces
create mode 100644 src/test/zones/vxlan/dhcp/interfaces
create mode 100644 src/test/zones/vxlan/dhcp/sdn_config
create mode 100644 src/test/zones/vxlan/nodhcp/expected_sdn_interfaces
create mode 100644 src/test/zones/vxlan/nodhcp/interfaces
create mode 100644 src/test/zones/vxlan/nodhcp/sdn_config
diff --git a/src/PVE/Network/SDN/Zones/VxlanPlugin.pm b/src/PVE/Network/SDN/Zones/VxlanPlugin.pm
index 9a77bb9..7aa3c26 100644
--- a/src/PVE/Network/SDN/Zones/VxlanPlugin.pm
+++ b/src/PVE/Network/SDN/Zones/VxlanPlugin.pm
@@ -48,6 +48,7 @@ sub options {
reversedns => { optional => 1 },
dnszone => { optional => 1 },
ipam => { optional => 1 },
+ dhcp => { optional => 1 },
};
}
@@ -59,6 +60,7 @@ sub generate_sdn_config {
my $alias = $vnet->{alias};
my $multicastaddress = $plugin_config->{'multicast-address'};
my $vxlanport = $plugin_config->{'vxlan-port'};
+ my $dhcp = $plugin_config->{'dhcp'};
my @peers;
@peers = PVE::Tools::split_list($plugin_config->{'peers'}) if $plugin_config->{'peers'};
my $vxlan_iface = "vxlan_$vnetid";
@@ -87,6 +89,34 @@ sub generate_sdn_config {
#vnet bridge
@iface_config = ();
+
+ my $disable_forward_v4 = undef;
+ my $disable_forward_v6 = undef;
+
+ if ($dhcp) {
+ my $address = {};
+ my $subnets = PVE::Network::SDN::Vnets::get_subnets($vnetid, 1);
+
+ foreach my $subnetid (sort keys %{$subnets}) {
+ my $subnet = $subnets->{$subnetid};
+ my $gateway = $subnet->{gateway};
+
+ if ($gateway) {
+
+ my $mask = $subnet->{mask};
+ if (Net::IP::ip_is_ipv6($gateway)) {
+ $disable_forward_v6 = 1;
+ } else {
+ $mask = '32';
+ $disable_forward_v4 = 1;
+ }
+
+ push @iface_config, "address $gateway/$mask" if !defined($address->{$gateway});
+ $address->{$gateway} = 1;
+ }
+ }
+ }
+
push @iface_config, "bridge_ports $vxlan_iface";
push @iface_config, "bridge_stp off";
push @iface_config, "bridge_fd 0";
@@ -96,6 +126,8 @@ sub generate_sdn_config {
}
push @iface_config, "mtu $mtu" if $mtu;
push @iface_config, "alias $alias" if $alias;
+ push @iface_config, "ip-forward off" if $disable_forward_v4;
+ push @iface_config, "ip6-forward off" if $disable_forward_v6;
push(@{$config->{$vnetid}}, @iface_config) if !$config->{$vnetid};
return $config;
diff --git a/src/test/zones/vxlan/dhcp/expected_sdn_interfaces b/src/test/zones/vxlan/dhcp/expected_sdn_interfaces
new file mode 100644
index 0000000..d99efc2
--- /dev/null
+++ b/src/test/zones/vxlan/dhcp/expected_sdn_interfaces
@@ -0,0 +1,19 @@
+#version:1
+
+auto myvnet
+iface myvnet
+ address 192.168.0.1/32
+ address 2a08:2142:302:3::1/64
+ bridge_ports vxlan_myvnet
+ bridge_stp off
+ bridge_fd 0
+ mtu 1450
+ ip-forward off
+ ip6-forward off
+
+auto vxlan_myvnet
+iface vxlan_myvnet
+ vxlan-id 100
+ vxlan_remoteip 192.168.0.2
+ vxlan_remoteip 192.168.0.3
+ mtu 1450
diff --git a/src/test/zones/vxlan/dhcp/interfaces b/src/test/zones/vxlan/dhcp/interfaces
new file mode 100644
index 0000000..66bb826
--- /dev/null
+++ b/src/test/zones/vxlan/dhcp/interfaces
@@ -0,0 +1,7 @@
+auto vmbr0
+iface vmbr0 inet static
+ address 192.168.0.1/24
+ gateway 192.168.0.254
+ bridge-ports eth0
+ bridge-stp off
+ bridge-fd 0
diff --git a/src/test/zones/vxlan/dhcp/sdn_config b/src/test/zones/vxlan/dhcp/sdn_config
new file mode 100644
index 0000000..3056165
--- /dev/null
+++ b/src/test/zones/vxlan/dhcp/sdn_config
@@ -0,0 +1,25 @@
+{
+ version => 1,
+ vnets => {
+ ids => {
+ myvnet => { tag => 100, type => "vnet", zone => "myzone" },
+ },
+ },
+ zones => {
+ ids => { myzone => { ipam => "pve", type => "vxlan", peers => "192.168.0.1,192.168.0.2,192.168.0.3", dhcp => "dnsmasq" } },
+ },
+ subnets => {
+ ids => {
+ 'myzone-192.168.0.0-24' => {
+ 'type' => 'subnet',
+ 'vnet' => 'myvnet',
+ 'gateway' => '192.168.0.1',
+ },
+ 'myzone-2a08:2142:302:3::-64' => {
+ 'type' => 'subnet',
+ 'vnet' => 'myvnet',
+ 'gateway' => '2a08:2142:302:3::1',
+ }
+ }
+ }
+}
diff --git a/src/test/zones/vxlan/nodhcp/expected_sdn_interfaces b/src/test/zones/vxlan/nodhcp/expected_sdn_interfaces
new file mode 100644
index 0000000..7b73c3e
--- /dev/null
+++ b/src/test/zones/vxlan/nodhcp/expected_sdn_interfaces
@@ -0,0 +1,15 @@
+#version:1
+
+auto myvnet
+iface myvnet
+ bridge_ports vxlan_myvnet
+ bridge_stp off
+ bridge_fd 0
+ mtu 1450
+
+auto vxlan_myvnet
+iface vxlan_myvnet
+ vxlan-id 100
+ vxlan_remoteip 192.168.0.2
+ vxlan_remoteip 192.168.0.3
+ mtu 1450
diff --git a/src/test/zones/vxlan/nodhcp/interfaces b/src/test/zones/vxlan/nodhcp/interfaces
new file mode 100644
index 0000000..66bb826
--- /dev/null
+++ b/src/test/zones/vxlan/nodhcp/interfaces
@@ -0,0 +1,7 @@
+auto vmbr0
+iface vmbr0 inet static
+ address 192.168.0.1/24
+ gateway 192.168.0.254
+ bridge-ports eth0
+ bridge-stp off
+ bridge-fd 0
diff --git a/src/test/zones/vxlan/nodhcp/sdn_config b/src/test/zones/vxlan/nodhcp/sdn_config
new file mode 100644
index 0000000..338290d
--- /dev/null
+++ b/src/test/zones/vxlan/nodhcp/sdn_config
@@ -0,0 +1,25 @@
+{
+ version => 1,
+ vnets => {
+ ids => {
+ myvnet => { tag => 100, type => "vnet", zone => "myzone" },
+ },
+ },
+ zones => {
+ ids => { myzone => { ipam => "pve", type => "vxlan", peers => "192.168.0.1,192.168.0.2,192.168.0.3" } },
+ },
+ subnets => {
+ ids => {
+ 'myzone-192.168.0.0-24' => {
+ 'type' => 'subnet',
+ 'vnet' => 'myvnet',
+ 'gateway' => '192.168.0.1',
+ },
+ 'myzone-2a08:2142:302:3::-64' => {
+ 'type' => 'subnet',
+ 'vnet' => 'myvnet',
+ 'gateway' => '2a08:2142:302:3::1',
+ }
+ }
+ }
+}
--
2.39.2
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