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
  10 use base('PVE::Network::SDN::Controllers::Plugin');
  11
  12 sub type {
  13     return 'evpn';
  14 }
  15
  16 sub properties {
  17     return {
  18         'uplink-id' => {
  19             type => 'integer',
  20             minimum => 1, maximum => 4096,
  21             description => 'Uplink interface',
  22         },
  23         'asn' => {
  24             type => 'integer',
  25             description => "autonomous system number",
  26         },
  27         'peers' => {
  28             description => "peers address list.",
  29             type => 'string', format => 'ip-list'
  30         },
  31         'gateway-nodes' => get_standard_option('pve-node-list'),
  32         'gateway-external-peers' => {
  33             description => "upstream bgp peers address list.",
  34             type => 'string', format => 'ip-list'
  35         },
  36     };
  37 }
  38
  39 sub options {
  40
  41     return {
  42         'uplink-id' => { optional => 0 },
  43         'asn' => { optional => 0 },
  44         'peers' => { optional => 0 },
  45         'gateway-nodes' => { optional => 1 },
  46         'gateway-external-peers' => { optional => 1 },
  47     };
  48 }
  49
  50 # Plugin implementation
  51 sub generate_controller_config {
  52     my ($class, $plugin_config, $router, $id, $uplinks, $config) = @_;
  53
  54     my @peers = split(',', $plugin_config->{'peers'}) if $plugin_config->{'peers'};
  55
  56     my $asn = $plugin_config->{asn};
  57     my $uplink = $plugin_config->{'uplink-id'};
  58     my $gatewaynodes = $plugin_config->{'gateway-nodes'};
  59     my @gatewaypeers = split(',', $plugin_config->{'gateway-external-peers'}) if $plugin_config->{'gateway-external-peers'};
  60
  61     return if !$asn;
  62
  63     my $iface = "uplink$uplink";
  64     my $ifaceip = "";
  65
  66     if($uplinks->{$uplink}->{name}) {
  67         $iface = $uplinks->{$uplink}->{name};
  68         $ifaceip = PVE::Network::SDN::Controllers::Plugin::get_first_local_ipv4_from_interface($iface);
  69     }
  70
  71     my $is_gateway = undef;
  72     my $local_node = PVE::INotify::nodename();
  73
  74     foreach my $gatewaynode (PVE::Tools::split_list($gatewaynodes)) {
  75         $is_gateway = 1 if $gatewaynode eq $local_node;
  76     }
  77
  78     my @router_config = ();
  79
  80     push @router_config, "bgp router-id $ifaceip";
  81     push @router_config, "no bgp default ipv4-unicast";
  82     push @router_config, "coalesce-time 1000";
  83
  84     foreach my $address (@peers) {
  85         next if $address eq $ifaceip;
  86         push @router_config, "neighbor $address remote-as $asn";
  87     }
  88
  89     if ($is_gateway) {
  90         foreach my $address (@gatewaypeers) {
  91             push @router_config, "neighbor $address remote-as external";
  92         }
  93     }
  94     push(@{$config->{frr}->{router}->{"bgp $asn"}->{""}}, @router_config);
  95
  96     @router_config = ();
  97     foreach my $address (@peers) {
  98         next if $address eq $ifaceip;
  99         push @router_config, "neighbor $address activate";
 100     }
 101     push @router_config, "advertise-all-vni";
 102     push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"l2vpn evpn"}}, @router_config);
 103
 104     if ($is_gateway) {
 105
 106         @router_config = ();
 107         #import /32 routes of evpn network from vrf1 to default vrf (for packet return)
 108         foreach my $address (@gatewaypeers) {
 109             push @router_config, "neighbor $address activate";
 110         }
 111         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv4 unicast"}}, @router_config);
 112         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv6 unicast"}}, @router_config);
 113
 114     }
 115
 116     return $config;
 117 }
 118
 119 sub generate_controller_transport_config {
 120     my ($class, $plugin_config, $router, $id, $uplinks, $config) = @_;
 121
 122     my $vrf = $id;
 123     my $vrfvxlan = $plugin_config->{'vrf-vxlan'};
 124     my $asn = $router->{asn};
 125     my $gatewaynodes = $router->{'gateway-nodes'};
 126
 127     return if !$vrf || !$vrfvxlan || !$asn;
 128
 129     #vrf
 130     my @router_config = ();
 131     push @router_config, "vni $vrfvxlan";
 132     push(@{$config->{frr}->{vrf}->{"$vrf"}}, @router_config);
 133
 134     @router_config = ();
 135
 136     my $is_gateway = undef;
 137     my $local_node = PVE::INotify::nodename();
 138
 139     foreach my $gatewaynode (PVE::Tools::split_list($gatewaynodes)) {
 140         $is_gateway = 1 if $gatewaynode eq $local_node;
 141     }
 142
 143     if ($is_gateway) {
 144
 145         @router_config = ();
 146         #import /32 routes of evpn network from vrf1 to default vrf (for packet return)
 147         #frr 7.1 tag is bugged -> works fine with 7.1 stable branch(20190829-02-g6ba76bbc1)
 148         #https://github.com/FRRouting/frr/issues/4905
 149         push @router_config, "import vrf $vrf";
 150         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv4 unicast"}}, @router_config);
 151         push(@{$config->{frr}->{router}->{"bgp $asn"}->{"address-family"}->{"ipv6 unicast"}}, @router_config);
 152
 153         @router_config = ();
 154         #redistribute connected to be able to route to local vms on the gateway
 155         push @router_config, "redistribute connected";
 156         push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"ipv4 unicast"}}, @router_config);
 157         push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"ipv6 unicast"}}, @router_config);
 158
 159         @router_config = ();
 160         #add default originate to announce 0.0.0.0/0 type5 route in evpn
 161         push @router_config, "default-originate ipv4";
 162         push @router_config, "default-originate ipv6";
 163         push(@{$config->{frr}->{router}->{"bgp $asn vrf $vrf"}->{"address-family"}->{"l2vpn evpn"}}, @router_config);
 164     }
 165
 166     return $config;
 167 }
 168
 169 sub on_delete_hook {
 170     my ($class, $routerid, $sdn_cfg) = @_;
 171
 172     # verify that transport is associated to this router
 173     foreach my $id (keys %{$sdn_cfg->{ids}}) {
 174         my $sdn = $sdn_cfg->{ids}->{$id};
 175         die "router $routerid is used by $id"
 176             if (defined($sdn->{router}) && $sdn->{router} eq $routerid);
 177     }
 178 }
 179
 180 sub on_update_hook {
 181     my ($class, $routerid, $sdn_cfg) = @_;
 182
 183     # verify that asn is not already used by another router
 184     my $asn = $sdn_cfg->{ids}->{$routerid}->{asn};
 185     foreach my $id (keys %{$sdn_cfg->{ids}}) {
 186         next if $id eq $routerid;
 187         my $sdn = $sdn_cfg->{ids}->{$id};
 188         die "asn $asn is already used by $id"
 189             if (defined($sdn->{asn}) && $sdn->{asn} eq $asn);
 190     }
 191 }
 192
 193 sub sort_frr_config {
 194     my $order = {};
 195     $order->{''} = 0;
 196     $order->{'vrf'} = 1;
 197     $order->{'ipv4 unicast'} = 1;
 198     $order->{'ipv6 unicast'} = 2;
 199     $order->{'l2vpn evpn'} = 3;
 200
 201     my $a_val = 100;
 202     my $b_val = 100;
 203
 204     $a_val = $order->{$a} if defined($order->{$a});
 205     $b_val = $order->{$b} if defined($order->{$b});
 206
 207     if($a =~ /bgp (\d+)$/) {
 208         $a_val = 2;
 209     }
 210
 211     if($b =~ /bgp (\d+)$/) {
 212         $b_val = 2;
 213     }
 214
 215     return $a_val <=> $b_val;
 216 }
 217
 218 sub generate_frr_recurse{
 219    my ($final_config, $content, $parentkey, $level) = @_;
 220
 221    my $keylist = {};
 222    $keylist->{vrf} = 1;
 223    $keylist->{'address-family'} = 1;
 224    $keylist->{router} = 1;
 225
 226    my $exitkeylist = {};
 227    $exitkeylist->{vrf} = 1;
 228    $exitkeylist->{'address-family'} = 1;
 229
 230    #fix me, make this generic
 231    my $paddinglevel = undef;
 232    if($level == 1 || $level == 2) {
 233      $paddinglevel = $level - 1;
 234    } elsif ($level == 3 || $level ==  4) {
 235      $paddinglevel = $level - 2;
 236    }
 237
 238    my $padding = "";
 239    $padding = ' ' x ($paddinglevel) if $paddinglevel;
 240
 241    if (ref $content eq ref {}) {
 242         foreach my $key (sort sort_frr_config keys %$content) {
 243             if ($parentkey && defined($keylist->{$parentkey})) {
 244                     push @{$final_config}, $padding."!";
 245                     push @{$final_config}, $padding."$parentkey $key";
 246             } else {
 247                     push @{$final_config}, $padding."$key" if $key ne '' && !defined($keylist->{$key});
 248             }
 249
 250             my $option = $content->{$key};
 251             generate_frr_recurse($final_config, $option, $key, $level+1);
 252
 253             push @{$final_config}, $padding."exit-$parentkey" if $parentkey && defined($exitkeylist->{$parentkey});
 254         }
 255     }
 256
 257     if (ref $content eq 'ARRAY') {
 258         foreach my $value (@$content) {
 259             push @{$final_config}, $padding."$value";
 260         }
 261     }
 262 }
 263
 264 sub write_controller_config {
 265     my ($class, $plugin_config, $config) = @_;
 266
 267     my $final_config = [];
 268     push @{$final_config}, "log syslog informational";
 269     push @{$final_config}, "!";
 270
 271     generate_frr_recurse($final_config, $config->{frr}, undef, 0);
 272
 273     push @{$final_config}, "!";
 274     push @{$final_config}, "line vty";
 275     push @{$final_config}, "!";
 276
 277     my $rawconfig = join("\n", @{$final_config});
 278
 279
 280     return if !$rawconfig;
 281     return if !-d "/etc/frr";
 282
 283     my $frr_config_file = "/etc/frr/frr.conf";
 284
 285     my $writefh = IO::File->new($frr_config_file,">");
 286     print $writefh $rawconfig;
 287     $writefh->close();
 288 }
 289
 290 sub reload_controller {
 291     my ($class) = @_;
 292
 293     my $conf_file = "/etc/frr/frr.conf";
 294     my $bin_path = "/usr/bin/vtysh";
 295
 296     my $err = sub {
 297         my $line = shift;
 298         if ($line =~ /^line (\S+)/) {
 299             print "$line \n";
 300         }
 301     };
 302
 303     if (-e $conf_file && -e $bin_path) {
 304         PVE::Tools::run_command([$bin_path, '-m', '-f', $conf_file], outfunc => {}, errfunc => $err);
 305     }
 306 }
 307
 308 1;
 309
 310