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sdn: dhcp: add helper for creating DHCP leases

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This helper can be used to create DHCP entries for a specific zone. It
is used by the API to create DHCP leases for VMs/CTs.

Co-Authored-By: Alexandre Derumier <aderumier@odiso.com>
Signed-off-by: Stefan Hanreich <s.hanreich@proxmox.com>
This commit is contained in:
Stefan Hanreich 2023-11-17 12:39:47 +01:00 committed by Thomas Lamprecht
parent 33074dfbee
commit 78add5e50a
2 changed files with 116 additions and 1 deletions
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115
src/PVE/Network/SDN/Dhcp.pm Normal file
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package PVE::Network::SDN::Dhcp;
use strict;
use warnings;
use PVE::Cluster qw(cfs_read_file);
use PVE::Network::SDN;
use PVE::Network::SDN::SubnetPlugin;
use PVE::Network::SDN::Dhcp qw(config);
use PVE::Network::SDN::Subnets qw(sdn_subnets_config config get_dhcp_ranges);
use PVE::Network::SDN::Dhcp::Plugin;
use PVE::Network::SDN::Dhcp::Dnsmasq;
use PVE::INotify qw(nodename);
PVE::Network::SDN::Dhcp::Plugin->init();
PVE::Network::SDN::Dhcp::Dnsmasq->register();
PVE::Network::SDN::Dhcp::Dnsmasq->init();
sub add_mapping {
my ($vnetid, $mac, $ip4, $ip6) = @_;
my $vnet = PVE::Network::SDN::Vnets::get_vnet($vnetid);
return if !$vnet;
my $zoneid = $vnet->{zone};
my $zone = PVE::Network::SDN::Zones::get_zone($zoneid);
return if !$zone->{ipam} || !$zone->{dhcp};
my $dhcp_plugin = PVE::Network::SDN::Dhcp::Plugin->lookup($zone->{dhcp});
$dhcp_plugin->add_ip_mapping($zoneid, $mac, $ip4) if $ip4;
$dhcp_plugin->add_ip_mapping($zoneid, $mac, $ip6) if $ip6;
}
sub remove_mapping {
my ($vnetid, $mac) = @_;
my $vnet = PVE::Network::SDN::Vnets::get_vnet($vnetid);
return if !$vnet;
my $zoneid = $vnet->{zone};
my $zone = PVE::Network::SDN::Zones::get_zone($zoneid);
return if !$zone->{ipam} || !$zone->{dhcp};
my $dhcp_plugin = PVE::Network::SDN::Dhcp::Plugin->lookup($zone->{dhcp});
$dhcp_plugin->del_ip_mapping($zoneid, $mac);
}
sub regenerate_config {
my ($reload) = @_;
my $cfg = PVE::Network::SDN::running_config();
my $zone_cfg = $cfg->{zones};
my $subnet_cfg = $cfg->{subnets};
return if !$zone_cfg && !$subnet_cfg;
my $nodename = PVE::INotify::nodename();
my $plugins = PVE::Network::SDN::Dhcp::Plugin->lookup_types();
foreach my $plugin_name (@$plugins) {
my $plugin = PVE::Network::SDN::Dhcp::Plugin->lookup($plugin_name);
eval { $plugin->before_regenerate() };
die "Could not run before_regenerate for DHCP plugin $plugin_name $@\n" if $@;
}
foreach my $zoneid (sort keys %{$zone_cfg->{ids}}) {
my $zone = $zone_cfg->{ids}->{$zoneid};
next if !$zone->{dhcp};
my $dhcp_plugin_name = $zone->{dhcp};
my $dhcp_plugin = PVE::Network::SDN::Dhcp::Plugin->lookup($dhcp_plugin_name);
die "Could not find DHCP plugin: $dhcp_plugin_name" if !$dhcp_plugin;
eval { $dhcp_plugin->before_configure($zoneid) };
die "Could not run before_configure for DHCP server $zoneid $@\n" if $@;
foreach my $subnet_id (keys %{$subnet_cfg->{ids}}) {
my $subnet_config = PVE::Network::SDN::Subnets::sdn_subnets_config($subnet_cfg, $subnet_id);
my $dhcp_ranges = PVE::Network::SDN::Subnets::get_dhcp_ranges($subnet_config);
my ($zone, $subnet_network, $subnet_mask) = split(/-/, $subnet_id);
next if $zone ne $zoneid;
next if !$dhcp_ranges;
eval { $dhcp_plugin->configure_subnet($zoneid, $subnet_config) };
warn "Could not configure subnet $subnet_id: $@\n" if $@;
foreach my $dhcp_range (@$dhcp_ranges) {
eval { $dhcp_plugin->configure_range($zoneid, $subnet_config, $dhcp_range) };
warn "Could not configure DHCP range for $subnet_id: $@\n" if $@;
}
}
eval { $dhcp_plugin->after_configure($zoneid) };
warn "Could not run after_configure for DHCP server $zoneid $@\n" if $@;
}
foreach my $plugin_name (@$plugins) {
my $plugin = PVE::Network::SDN::Dhcp::Plugin->lookup($plugin_name);
eval { $plugin->after_regenerate() };
warn "Could not run after_regenerate for DHCP plugin $plugin_name $@\n" if $@;
}
}
1;

2
src/PVE/Network/SDN/Makefile
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SOURCES=Vnets.pm VnetPlugin.pm Zones.pm Controllers.pm Subnets.pm SubnetPlugin.pm Ipams.pm Dns.pm
SOURCES=Vnets.pm VnetPlugin.pm Zones.pm Controllers.pm Subnets.pm SubnetPlugin.pm Ipams.pm Dns.pm Dhcp.pm
PERL5DIR=${DESTDIR}/usr/share/perl5