package PVE::Network::SDN::Controllers::EvpnPlugin; use strict; use warnings; use PVE::Network::SDN::Controllers::Plugin; use PVE::Tools qw(run_command); use PVE::INotify; use PVE::JSONSchema qw(get_standard_option); use base('PVE::Network::SDN::Controllers::Plugin'); sub type { return 'evpn'; } sub properties { return { 'asn' => { type => 'integer', description => "autonomous system number", }, 'peers' => { description => "peers address list.", type => 'string', format => 'ip-list' }, 'gateway-nodes' => get_standard_option('pve-node-list'), 'gateway-external-peers' => { description => "upstream bgp peers address list.", type => 'string', format => 'ip-list' }, }; } sub options { return { 'asn' => { optional => 0 }, 'peers' => { optional => 0 }, 'gateway-nodes' => { optional => 1 }, 'gateway-external-peers' => { optional => 1 }, }; } sub get_local_route_ip { my ($targetip) = @_; my $ip = undef; my $interface = undef; run_command(['/sbin/ip', 'route', 'get', $targetip], outfunc => sub { if ($_[0] =~ m/src ($PVE::Tools::IPRE)/) { $ip = $1; } if ($_[0] =~ m/dev (\S+)/) { $interface = $1; } }); return ($ip, $interface); } sub find_local_ip_interface { my ($peers) = @_; my $network_config = PVE::INotify::read_file('interfaces'); my $ifaces = $network_config->{ifaces}; #is a local ip member of peers list ? foreach my $address (@{$peers}) { while (my $interface = each %$ifaces) { my $ip = $ifaces->{$interface}->{address}; if ($ip && $ip eq $address) { return ($ip, $interface); } } } #if peer is remote, find source with ip route foreach my $address (@{$peers}) { my ($ip, $interface) = get_local_route_ip($address); return ($ip, $interface); } } # Plugin implementation sub generate_controller_config { my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_; my @peers = split(',', $plugin_config->{'peers'}) if $plugin_config->{'peers'}; my $asn = $plugin_config->{asn}; my $gatewaynodes = $plugin_config->{'gateway-nodes'}; my @gatewaypeers = split(',', $plugin_config->{'gateway-external-peers'}) if $plugin_config->{'gateway-external-peers'}; return if !$asn; my ($ifaceip, $interface) = find_local_ip_interface(\@peers); my $is_gateway = undef; my $local_node = PVE::INotify::nodename(); foreach my $gatewaynode (PVE::Tools::split_list($gatewaynodes)) { $is_gateway = 1 if $gatewaynode eq $local_node; } my @controller_config = (); push @controller_config, "bgp router-id $ifaceip"; push @controller_config, "no bgp default ipv4-unicast"; push @controller_config, "coalesce-time 1000"; foreach my $address (@peers) { next if $address eq $ifaceip; push @controller_config, "neighbor $address remote-as $asn"; } if ($is_gateway) { foreach my $address (@gatewaypeers) { push @controller_config, "neighbor $address remote-as external"; } } push(@{$config->{frr}->{router}->{"bgp $asn"}->{""}}, @controller_config); @controller_config = (); foreach my $address (@peers) { next if $address eq $ifaceip; push @controller_config, "neighbor $address activate"; } push @controller_config, "advertise-all-vni"; push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"l2vpn evpn"}}, @controller_config); if ($is_gateway) { @controller_config = (); #import /32 routes of evpn network from vrf1 to default vrf (for packet return) foreach my $address (@gatewaypeers) { push @controller_config, "neighbor $address activate"; } push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv4 unicast"}}, @controller_config); push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv6 unicast"}}, @controller_config); } return $config; } sub generate_controller_zone_config { my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_; my $vrf = $id; my $vrfvxlan = $plugin_config->{'vrf-vxlan'}; my $asn = $controller->{asn}; my $gatewaynodes = $controller->{'gateway-nodes'}; return if !$vrf || !$vrfvxlan || !$asn; #vrf my @controller_config = (); push @controller_config, "vni $vrfvxlan"; push(@{$config->{frr}->{vrf}->{"$vrf"}}, @controller_config); push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{""}}, "!"); @controller_config = (); my $is_gateway = undef; my $local_node = PVE::INotify::nodename(); foreach my $gatewaynode (PVE::Tools::split_list($gatewaynodes)) { $is_gateway = 1 if $gatewaynode eq $local_node; } if ($is_gateway) { @controller_config = (); #import /32 routes of evpn network from vrf1 to default vrf (for packet return) push @controller_config, "import vrf $vrf"; push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv4 unicast"}}, @controller_config); push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv6 unicast"}}, @controller_config); @controller_config = (); #redistribute connected to be able to route to local vms on the gateway push @controller_config, "redistribute connected"; push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"ipv4 unicast"}}, @controller_config); push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"ipv6 unicast"}}, @controller_config); @controller_config = (); #add default originate to announce 0.0.0.0/0 type5 route in evpn push @controller_config, "default-originate ipv4"; push @controller_config, "default-originate ipv6"; push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"l2vpn evpn"}}, @controller_config); } return $config; } sub on_delete_hook { my ($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) = @_; # verify that asn is not already used by another controller my $asn = $controller_cfg->{ids}->{$controllerid}->{asn}; foreach my $id (keys %{$controller_cfg->{ids}}) { next if $id eq $controllerid; my $controller = $controller_cfg->{ids}->{$id}; die "asn $asn is already used by $id" if (defined($controller->{asn}) && $controller->{asn} eq $asn); } } sub sort_frr_config { my $order = {}; $order->{''} = 0; $order->{'vrf'} = 1; $order->{'ipv4 unicast'} = 1; $order->{'ipv6 unicast'} = 2; $order->{'l2vpn evpn'} = 3; my $a_val = 100; my $b_val = 100; $a_val = $order->{$a} if defined($order->{$a}); $b_val = $order->{$b} if defined($order->{$b}); if($a =~ /bgp (\d+)$/) { $a_val = 2; } if($b =~ /bgp (\d+)$/) { $b_val = 2; } return $a_val <=> $b_val; } sub generate_frr_recurse{ my ($final_config, $content, $parentkey, $level) = @_; my $keylist = {}; $keylist->{vrf} = 1; $keylist->{'address-family'} = 1; $keylist->{router} = 1; my $exitkeylist = {}; $exitkeylist->{vrf} = 1; $exitkeylist->{'address-family'} = 1; #fix me, make this generic my $paddinglevel = undef; if($level == 1 || $level == 2) { $paddinglevel = $level - 1; } elsif ($level == 3 || $level == 4) { $paddinglevel = $level - 2; } my $padding = ""; $padding = ' ' x ($paddinglevel) if $paddinglevel; if (ref $content eq ref {}) { foreach my $key (sort sort_frr_config keys %$content) { if ($parentkey && defined($keylist->{$parentkey})) { push @{$final_config}, $padding."!"; push @{$final_config}, $padding."$parentkey $key"; } else { push @{$final_config}, $padding."$key" if $key ne '' && !defined($keylist->{$key}); } my $option = $content->{$key}; generate_frr_recurse($final_config, $option, $key, $level+1); push @{$final_config}, $padding."exit-$parentkey" if $parentkey && defined($exitkeylist->{$parentkey}); } } if (ref $content eq 'ARRAY') { foreach my $value (@$content) { push @{$final_config}, $padding."$value"; } } } sub write_controller_config { my ($class, $plugin_config, $config) = @_; my $nodename = PVE::INotify::nodename(); my $final_config = []; push @{$final_config}, "log syslog informational"; push @{$final_config}, "ip forwarding"; push @{$final_config}, "ipv6 forwarding"; push @{$final_config}, "frr defaults traditional"; push @{$final_config}, "service integrated-vtysh-config"; push @{$final_config}, "hostname $nodename"; push @{$final_config}, "!"; generate_frr_recurse($final_config, $config->{frr}, undef, 0); push @{$final_config}, "!"; push @{$final_config}, "line vty"; push @{$final_config}, "!"; my $rawconfig = join("\n", @{$final_config}); return if !$rawconfig; return if !-d "/etc/frr"; my $frr_config_file = "/etc/frr/frr.conf"; my $writefh = IO::File->new($frr_config_file,">"); print $writefh $rawconfig; $writefh->close(); } sub reload_controller { my ($class) = @_; my $conf_file = "/etc/frr/frr.conf"; my $bin_path = "/usr/lib/frr/frr-reload.py"; if (!-e $bin_path) { warn "missing $bin_path. Please install frr-pythontools package"; return; } my $err = sub { my $line = shift; if ($line =~ /ERROR:/) { warn "$line \n"; } }; if (-e $conf_file && -e $bin_path) { PVE::Tools::run_command([$bin_path, '--stdout', '--reload', $conf_file], outfunc => {}, errfunc => $err); } } 1;