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package PVE::Network::SDN::Controllers::BgpPlugin;
use strict;
use warnings;
use PVE::INotify;
use PVE::JSONSchema qw(get_standard_option);
use PVE::Tools qw(run_command file_set_contents file_get_contents);
use PVE::Network::SDN::Controllers::Plugin;
use PVE::Network::SDN::Zones::Plugin;
use Net::IP;
use base('PVE::Network::SDN::Controllers::Plugin');
sub type {
return 'bgp';
}
sub properties {
return {
'bgp-multipath-as-path-relax' => {
type => 'boolean',
optional => 1,
},
ebgp => {
type => 'boolean',
optional => 1,
description => "Enable ebgp. (remote-as external)",
},
'ebgp-multihop' => {
type => 'integer',
optional => 1,
},
loopback => {
description => "source loopback interface.",
type => 'string',
},
node => get_standard_option('pve-node'),
};
}
sub options {
return {
'node' => { optional => 0 },
'asn' => { optional => 0 },
'peers' => { optional => 0 },
'bgp-multipath-as-path-relax' => { optional => 1 },
'ebgp' => { optional => 1 },
'ebgp-multihop' => { optional => 1 },
'loopback' => { optional => 1 },
};
}
# Plugin implementation
sub generate_frr_config {
my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_;
my @peers;
@peers = PVE::Tools::split_list($plugin_config->{'peers'}) if $plugin_config->{'peers'};
my $asn = $plugin_config->{asn};
my $ebgp = $plugin_config->{ebgp};
my $ebgp_multihop = $plugin_config->{'ebgp-multihop'};
my $loopback = $plugin_config->{loopback};
my $multipath_relax = $plugin_config->{'bgp-multipath-as-path-relax'};
my $local_node = PVE::INotify::nodename();
return if !$asn;
return if $local_node ne $plugin_config->{node};
my $bgp = $config->{frr}->{router}->{"bgp $asn"} //= {};
my ($ifaceip, $interface) =
PVE::Network::SDN::Zones::Plugin::find_local_ip_interface_peers(\@peers, $loopback);
my $routerid = PVE::Network::SDN::Controllers::Plugin::get_router_id($ifaceip, $interface);
my $remoteas = $ebgp ? "external" : $asn;
#global options
my @controller_config = (
"bgp router-id $routerid", "no bgp default ipv4-unicast", "coalesce-time 1000",
);
push(@{ $bgp->{""} }, @controller_config) if keys %{$bgp} == 0;
@controller_config = ();
if ($ebgp) {
push @controller_config, "bgp disable-ebgp-connected-route-check" if $loopback;
}
push @controller_config, "bgp bestpath as-path multipath-relax" if $multipath_relax;
#BGP neighbors
if (@peers) {
push @controller_config, "neighbor BGP peer-group";
push @controller_config, "neighbor BGP remote-as $remoteas";
push @controller_config, "neighbor BGP bfd";
push @controller_config, "neighbor BGP ebgp-multihop $ebgp_multihop"
if $ebgp && $ebgp_multihop;
}
# BGP peers
foreach my $address (@peers) {
push @controller_config, "neighbor $address peer-group BGP";
}
push(@{ $bgp->{""} }, @controller_config);
# address-family unicast
if (@peers) {
my $ipversion = Net::IP::ip_is_ipv6($ifaceip) ? "ipv6" : "ipv4";
my $mask = Net::IP::ip_is_ipv6($ifaceip) ? "/128" : "32";
push(@{ $bgp->{"address-family"}->{"$ipversion unicast"} }, "network $ifaceip/$mask")
if $loopback;
push(@{ $bgp->{"address-family"}->{"$ipversion unicast"} }, "neighbor BGP activate");
push(
@{ $bgp->{"address-family"}->{"$ipversion unicast"} },
"neighbor BGP soft-reconfiguration inbound",
);
}
if ($loopback) {
$config->{frr_prefix_list}->{loopbacks_ips}->{10} = "permit 0.0.0.0/0 le 32";
push(@{ $config->{frr_ip_protocol} }, "ip protocol bgp route-map correct_src");
my $routemap_config = ();
push @{$routemap_config}, "match ip address prefix-list loopbacks_ips";
push @{$routemap_config}, "set src $ifaceip";
my $routemap = { rule => $routemap_config, action => "permit" };
push(@{ $config->{frr_routemap}->{'correct_src'} }, $routemap);
}
return $config;
}
sub generate_zone_frr_config {
my ($class, $plugin_config, $controller, $controller_cfg, $id, $uplinks, $config) = @_;
}
sub on_delete_hook {
my ($class, $controllerid, $zone_cfg) = @_;
# verify that zone is associated to this controller
foreach my $id (keys %{ $zone_cfg->{ids} }) {
my $zone = $zone_cfg->{ids}->{$id};
die "controller $controllerid is used by $id"
if (defined($zone->{controller}) && $zone->{controller} eq $controllerid);
}
}
sub on_update_hook {
my ($class, $controllerid, $controller_cfg) = @_;
# we can only have 1 bgp controller by node
my $local_node = PVE::INotify::nodename();
my $controllernb = 0;
foreach my $id (keys %{ $controller_cfg->{ids} }) {
next if $id eq $controllerid;
my $controller = $controller_cfg->{ids}->{$id};
next if $controller->{type} ne "bgp";
next if $controller->{node} ne $local_node;
$controllernb++;
die "only 1 bgp controller can be defined" if $controllernb > 1;
}
}
1;
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