PVE/Network/SDN/Controllers/EvpnPlugin.pm

   1 package PVE::Network::SDN::Controllers::EvpnPlugin;
   2
   3 use strict;
   4 use warnings;
   5 use PVE::Network::SDN::Controllers::Plugin;
   6 use PVE::Tools;
   7 use PVE::INotify;
   8 use PVE::JSONSchema qw(get_standard_option);
   9 use PVE::Network::SDN::Zones::Plugin;
  10 use base('PVE::Network::SDN::Controllers::Plugin');
  11
  12 sub type {
  13     return 'evpn';
  14 }
  15
  16 sub properties {
  17     return {
  18         'asn' => {
  19             type => 'integer',
  20             description => "autonomous system number",
  21         },
  22         'peers' => {
  23             description => "peers address list.",
  24             type => 'string', format => 'ip-list'
  25         },
  26         'gateway-nodes' => get_standard_option('pve-node-list'),
  27         'gateway-external-peers' => {
  28             description => "upstream bgp peers address list.",
  29             type => 'string', format => 'ip-list'
  30         },
  31     };
  32 }
  33
  34 sub options {
  35
  36     return {
  37         'asn' => { optional => 0 },
  38         'peers' => { optional => 0 },
  39         'gateway-nodes' => { optional => 1 },
  40         'gateway-external-peers' => { optional => 1 },
  41     };
  42 }
  43
  44 # Plugin implementation
  45 sub generate_controller_config {
  46     my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_;
  47
  48     my @peers = split(',', $plugin_config->{'peers'}) if $plugin_config->{'peers'};
  49
  50     my $asn = $plugin_config->{asn};
  51     my $gatewaynodes = $plugin_config->{'gateway-nodes'};
  52     my @gatewaypeers = split(',', $plugin_config->{'gateway-external-peers'}) if $plugin_config->{'gateway-external-peers'};
  53
  54     return if !$asn;
  55
  56     my ($ifaceip, $interface) = PVE::Network::SDN::Zones::Plugin::find_local_ip_interface_peers(\@peers);
  57
  58     my $is_gateway = undef;
  59     my $local_node = PVE::INotify::nodename();
  60
  61     foreach my $gatewaynode (PVE::Tools::split_list($gatewaynodes)) {
  62         $is_gateway = 1 if $gatewaynode eq $local_node;
  63     }
  64
  65     my @controller_config = ();
  66
  67     push @controller_config, "bgp router-id $ifaceip";
  68     push @controller_config, "no bgp default ipv4-unicast";
  69     push @controller_config, "coalesce-time 1000";
  70
  71     foreach my $address (@peers) {
  72         next if $address eq $ifaceip;
  73         push @controller_config, "neighbor $address remote-as $asn";
  74     }
  75
  76     if ($is_gateway) {
  77         foreach my $address (@gatewaypeers) {
  78             push @controller_config, "neighbor $address remote-as external";
  79         }
  80     }
  81     push(@{$config->{frr}->{router}->{"bgp $asn"}->{""}}, @controller_config);
  82
  83     @controller_config = ();
  84     foreach my $address (@peers) {
  85         next if $address eq $ifaceip;
  86         push @controller_config, "neighbor $address activate";
  87     }
  88     push @controller_config, "advertise-all-vni";
  89     push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"l2vpn evpn"}}, @controller_config);
  90
  91     if ($is_gateway) {
  92
  93         @controller_config = ();
  94         #import /32 routes of evpn network from vrf1 to default vrf (for packet return)
  95         foreach my $address (@gatewaypeers) {
  96             push @controller_config, "neighbor $address activate";
  97         }
  98         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv4 unicast"}}, @controller_config);
  99         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv6 unicast"}}, @controller_config);
 100
 101     }
 102
 103     return $config;
 104 }
 105
 106 sub generate_controller_zone_config {
 107     my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_;
 108
 109     my $vrf = $id;
 110     my $vrfvxlan = $plugin_config->{'vrf-vxlan'};
 111     my $asn = $controller->{asn};
 112     my $gatewaynodes = $controller->{'gateway-nodes'};
 113
 114     return if !$vrf || !$vrfvxlan || !$asn;
 115
 116     #vrf
 117     my @controller_config = ();
 118     push @controller_config, "vni $vrfvxlan";
 119     push(@{$config->{frr}->{vrf}->{"$vrf"}}, @controller_config);
 120
 121     push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{""}}, "!");
 122
 123     @controller_config = ();
 124
 125     my $is_gateway = undef;
 126     my $local_node = PVE::INotify::nodename();
 127
 128     foreach my $gatewaynode (PVE::Tools::split_list($gatewaynodes)) {
 129         $is_gateway = 1 if $gatewaynode eq $local_node;
 130     }
 131
 132     if ($is_gateway) {
 133
 134         @controller_config = ();
 135         #import /32 routes of evpn network from vrf1 to default vrf (for packet return)
 136         push @controller_config, "import vrf $vrf";
 137         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv4 unicast"}}, @controller_config);
 138         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv6 unicast"}}, @controller_config);
 139
 140         @controller_config = ();
 141         #redistribute connected to be able to route to local vms on the gateway
 142         push @controller_config, "redistribute connected";
 143         push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"ipv4 unicast"}}, @controller_config);
 144         push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"ipv6 unicast"}}, @controller_config);
 145
 146         @controller_config = ();
 147         #add default originate to announce 0.0.0.0/0 type5 route in evpn
 148         push @controller_config, "default-originate ipv4";
 149         push @controller_config, "default-originate ipv6";
 150         push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"l2vpn evpn"}}, @controller_config);
 151     }
 152
 153     return $config;
 154 }
 155
 156 sub on_delete_hook {
 157     my ($class, $controllerid, $zone_cfg) = @_;
 158
 159     # verify that zone is associated to this controller
 160     foreach my $id (keys %{$zone_cfg->{ids}}) {
 161         my $zone = $zone_cfg->{ids}->{$id};
 162         die "controller $controllerid is used by $id"
 163             if (defined($zone->{controller}) && $zone->{controller} eq $controllerid);
 164     }
 165 }
 166
 167 sub on_update_hook {
 168     my ($class, $controllerid, $controller_cfg) = @_;
 169
 170     # verify that asn is not already used by another controller
 171     my $asn = $controller_cfg->{ids}->{$controllerid}->{asn};
 172     foreach my $id (keys %{$controller_cfg->{ids}}) {
 173         next if $id eq $controllerid;
 174         my $controller = $controller_cfg->{ids}->{$id};
 175         die "asn $asn is already used by $id"
 176             if (defined($controller->{asn}) && $controller->{asn} eq $asn);
 177     }
 178 }
 179
 180 sub sort_frr_config {
 181     my $order = {};
 182     $order->{''} = 0;
 183     $order->{'vrf'} = 1;
 184     $order->{'ipv4 unicast'} = 1;
 185     $order->{'ipv6 unicast'} = 2;
 186     $order->{'l2vpn evpn'} = 3;
 187
 188     my $a_val = 100;
 189     my $b_val = 100;
 190
 191     $a_val = $order->{$a} if defined($order->{$a});
 192     $b_val = $order->{$b} if defined($order->{$b});
 193
 194     if($a =~ /bgp (\d+)$/) {
 195         $a_val = 2;
 196     }
 197
 198     if($b =~ /bgp (\d+)$/) {
 199         $b_val = 2;
 200     }
 201
 202     return $a_val <=> $b_val;
 203 }
 204
 205 sub generate_frr_recurse{
 206    my ($final_config, $content, $parentkey, $level) = @_;
 207
 208    my $keylist = {};
 209    $keylist->{vrf} = 1;
 210    $keylist->{'address-family'} = 1;
 211    $keylist->{router} = 1;
 212
 213    my $exitkeylist = {};
 214    $exitkeylist->{vrf} = 1;
 215    $exitkeylist->{'address-family'} = 1;
 216
 217    #fix me, make this generic
 218    my $paddinglevel = undef;
 219    if($level == 1 || $level == 2) {
 220      $paddinglevel = $level - 1;
 221    } elsif ($level == 3 || $level ==  4) {
 222      $paddinglevel = $level - 2;
 223    }
 224
 225    my $padding = "";
 226    $padding = ' ' x ($paddinglevel) if $paddinglevel;
 227
 228    if (ref $content eq ref {}) {
 229         foreach my $key (sort sort_frr_config keys %$content) {
 230             if ($parentkey && defined($keylist->{$parentkey})) {
 231                     push @{$final_config}, $padding."!";
 232                     push @{$final_config}, $padding."$parentkey $key";
 233             } else {
 234                     push @{$final_config}, $padding."$key" if $key ne '' && !defined($keylist->{$key});
 235             }
 236
 237             my $option = $content->{$key};
 238             generate_frr_recurse($final_config, $option, $key, $level+1);
 239
 240             push @{$final_config}, $padding."exit-$parentkey" if $parentkey && defined($exitkeylist->{$parentkey});
 241         }
 242     }
 243
 244     if (ref $content eq 'ARRAY') {
 245         foreach my $value (@$content) {
 246             push @{$final_config}, $padding."$value";
 247         }
 248     }
 249 }
 250
 251 sub write_controller_config {
 252     my ($class, $plugin_config, $config) = @_;
 253
 254     my $nodename = PVE::INotify::nodename();
 255
 256     my $final_config = [];
 257     push @{$final_config}, "log syslog informational";
 258     push @{$final_config}, "ip forwarding";
 259     push @{$final_config}, "ipv6 forwarding";
 260     push @{$final_config}, "frr defaults traditional";
 261     push @{$final_config}, "service integrated-vtysh-config";
 262     push @{$final_config}, "hostname $nodename";
 263     push @{$final_config}, "!";
 264
 265     generate_frr_recurse($final_config, $config->{frr}, undef, 0);
 266
 267     push @{$final_config}, "!";
 268     push @{$final_config}, "line vty";
 269     push @{$final_config}, "!";
 270
 271     my $rawconfig = join("\n", @{$final_config});
 272
 273
 274     return if !$rawconfig;
 275     return if !-d "/etc/frr";
 276
 277     my $frr_config_file = "/etc/frr/frr.conf";
 278
 279     my $writefh = IO::File->new($frr_config_file,">");
 280     print $writefh $rawconfig;
 281     $writefh->close();
 282 }
 283
 284 sub reload_controller {
 285     my ($class) = @_;
 286
 287     my $conf_file = "/etc/frr/frr.conf";
 288     my $bin_path = "/usr/lib/frr/frr-reload.py";
 289
 290     if (!-e $bin_path) {
 291         warn "missing $bin_path. Please install frr-pythontools package";
 292         return;
 293     }
 294
 295     my $err = sub {
 296         my $line = shift;
 297         if ($line =~ /ERROR:/) {
 298             warn "$line \n";
 299         }
 300     };
 301
 302     if (-e $conf_file && -e $bin_path) {
 303         PVE::Tools::run_command([$bin_path, '--stdout', '--reload', $conf_file], outfunc => {}, errfunc => $err);
 304     }
 305 }
 306
 307 1;
 308
 309