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