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sdn: register MAC in IPAM if not found

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if inside add_dhcp_mapping, which is called at VM or LCX start, we do
not find an IP in IPAM, register the MAC.

This is very useful as a fallback if for some reason an IP mapping was
deleted or there is a bug somewhere that does not register an IP.

This acts more like DHCP to allocate an IP on demand.

In order to properly register the IP, the VMID and hostname is required
as a parameter.

Signed-off-by: Stefan Lendl <s.lendl@proxmox.com>
This commit is contained in:
Stefan Lendl 2023-11-21 15:55:54 +01:00 committed by Thomas Lamprecht
parent 3bef780a5a
commit 596d9c238a
1 changed files with 8 additions and 2 deletions
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10
src/PVE/Network/SDN/Vnets.pm
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@ -186,7 +186,7 @@ sub del_ips_from_mac {
}
sub add_dhcp_mapping {
my ($vnetid, $mac) = @_;
my ($vnetid, $mac, $vmid, $name) = @_;
my $vnet = PVE::Network::SDN::Vnets::get_vnet($vnetid);
return if !$vnet;
@ -195,7 +195,13 @@ sub add_dhcp_mapping {
return if !$zone->{ipam} || !$zone->{dhcp};
my ($ip4,$ip6) = PVE::Network::SDN::Vnets::get_ips_from_mac($vnetid, $mac);
my ($ip4, $ip6) = PVE::Network::SDN::Vnets::get_ips_from_mac($vnetid, $mac);
if ( ! ($ip4 || $ip6) ) {
print "No IP found for MAC: $mac for VMID:$vmid\n";
add_next_free_cidr($vnetid, $name, $mac, "$vmid", undef, 1);
($ip4, $ip6) = PVE::Network::SDN::Vnets::get_ips_from_mac($vnetid, $mac);
print "got new IP from IPAM: $ip4 $ip6\n";
}
PVE::Network::SDN::Dhcp::add_mapping($vnetid, $mac, $ip4, $ip6) if $ip4 || $ip6;
}