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From: Gabriel Goller <g.goller@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Fri, 28 Mar 2025 18:13:20 +0100
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Subject: [pve-devel] [PATCH pve-network 05/17] controllers: implement new
 api for frr config generation
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From: Stefan Hanreich <s.hanreich@proxmox.com>

With the changes to how we handle the frr config generation,
controllers are now no longer responsible for generating the FRR
configuration. Instead, we pass the existing frr_config perl hash to
every controller, where controllers append their respective
configuration.

This requires a few changes in the controller API, so that they now
append to a passed perl hash, instead of directly writing their own
configuration which is now handled externally by the SDN module.

Signed-off-by: Stefan Hanreich <s.hanreich@proxmox.com>
Co-authored-by: Gabriel Goller <g.goller@proxmox.com>
Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
---
 src/PVE/Network/SDN/Controllers.pm            | 67 +++----------------
 src/PVE/Network/SDN/Controllers/BgpPlugin.pm  | 21 +-----
 src/PVE/Network/SDN/Controllers/EvpnPlugin.pm |  6 +-
 src/PVE/Network/SDN/Controllers/IsisPlugin.pm | 21 +-----
 src/PVE/Network/SDN/Controllers/Plugin.pm     | 31 +--------
 5 files changed, 19 insertions(+), 127 deletions(-)

diff --git a/src/PVE/Network/SDN/Controllers.pm b/src/PVE/Network/SDN/Controllers.pm
index 9e8f3aa12a89..788bfccd3aff 100644
--- a/src/PVE/Network/SDN/Controllers.pm
+++ b/src/PVE/Network/SDN/Controllers.pm
@@ -79,12 +79,12 @@ sub read_etc_network_interfaces {
     return $interfaces_config;
 }
 
-sub generate_controller_config {
+sub generate_frr_config {
+    my ($frr_config, $sdn_config) = @_;
 
-    my $cfg = PVE::Network::SDN::running_config();
-    my $vnet_cfg = $cfg->{vnets};
-    my $zone_cfg = $cfg->{zones};
-    my $controller_cfg = $cfg->{controllers};
+    my $vnet_cfg = $sdn_config->{vnets};
+    my $zone_cfg = $sdn_config->{zones};
+    my $controller_cfg = $sdn_config->{controllers};
 
     return if !$vnet_cfg && !$zone_cfg && !$controller_cfg;
 
@@ -101,13 +101,10 @@ sub generate_controller_config {
 	}
     }
 
-    # generate configuration
-    my $config = {};
-
     foreach my $id (sort keys %{$controller_cfg->{ids}}) {
 	my $plugin_config = $controller_cfg->{ids}->{$id};
 	my $plugin = PVE::Network::SDN::Controllers::Plugin->lookup($plugin_config->{type});
-	$plugin->generate_controller_config($plugin_config, $controller_cfg, $id, $uplinks, $config);
+	$plugin->generate_frr_config($plugin_config, $controller_cfg, $id, $uplinks, $frr_config);
     }
 
     foreach my $id (sort keys %{$zone_cfg->{ids}}) {
@@ -117,7 +114,7 @@ sub generate_controller_config {
 	my $controller = $controller_cfg->{ids}->{$controllerid};
 	if ($controller) {
 	    my $controller_plugin = PVE::Network::SDN::Controllers::Plugin->lookup($controller->{type});
-	    $controller_plugin->generate_controller_zone_config($plugin_config, $controller, $controller_cfg, $id, $uplinks, $config);
+	    $controller_plugin->generate_zone_frr_config($plugin_config, $controller, $controller_cfg, $id, $uplinks, $frr_config);
 	}
     }
 
@@ -132,57 +129,11 @@ sub generate_controller_config {
 	my $controller = $controller_cfg->{ids}->{$controllerid};
 	if ($controller) {
 	    my $controller_plugin = PVE::Network::SDN::Controllers::Plugin->lookup($controller->{type});
-	    $controller_plugin->generate_controller_vnet_config($plugin_config, $controller, $zone, $zoneid, $id, $config);
+	    $controller_plugin->generate_vnet_frr_config($plugin_config, $controller, $zone, $zoneid, $id, $frr_config);
 	}
     }
 
-    return $config;
-}
-
-
-sub reload_controller {
-
-    my $cfg = PVE::Network::SDN::running_config();
-    my $controller_cfg = $cfg->{controllers};
-
-    return if !$controller_cfg;
-
-    foreach my $id (keys %{$controller_cfg->{ids}}) {
-	my $plugin_config = $controller_cfg->{ids}->{$id};
-	my $plugin = PVE::Network::SDN::Controllers::Plugin->lookup($plugin_config->{type});
-	$plugin->reload_controller();
-    }
-}
-
-sub generate_controller_rawconfig {
-    my ($config) = @_;
-
-    my $cfg = PVE::Network::SDN::running_config();
-    my $controller_cfg = $cfg->{controllers};
-    return if !$controller_cfg;
-
-    my $rawconfig = "";
-    foreach my $id (keys %{$controller_cfg->{ids}}) {
-	my $plugin_config = $controller_cfg->{ids}->{$id};
-	my $plugin = PVE::Network::SDN::Controllers::Plugin->lookup($plugin_config->{type});
-	$rawconfig .= $plugin->generate_controller_rawconfig($plugin_config, $config);
-    }
-    return $rawconfig;
-}
-
-sub write_controller_config {
-    my ($config) = @_;
-
-    my $cfg = PVE::Network::SDN::running_config();
-    my $controller_cfg = $cfg->{controllers};
-    return if !$controller_cfg;
-
-    foreach my $id (keys %{$controller_cfg->{ids}}) {
-	my $plugin_config = $controller_cfg->{ids}->{$id};
-	my $plugin = PVE::Network::SDN::Controllers::Plugin->lookup($plugin_config->{type});
-	$plugin->write_controller_config($plugin_config, $config);
-    }
+    return $frr_config;
 }
 
 1;
-
diff --git a/src/PVE/Network/SDN/Controllers/BgpPlugin.pm b/src/PVE/Network/SDN/Controllers/BgpPlugin.pm
index 53963e5ad7f4..3b21cada2d8d 100644
--- a/src/PVE/Network/SDN/Controllers/BgpPlugin.pm
+++ b/src/PVE/Network/SDN/Controllers/BgpPlugin.pm
@@ -53,7 +53,7 @@ sub options {
 }
 
 # Plugin implementation
-sub generate_controller_config {
+sub generate_frr_config {
     my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_;
 
     my @peers;
@@ -132,7 +132,7 @@ sub generate_controller_config {
     return $config;
 }
 
-sub generate_controller_zone_config {
+sub generate_zone_frr_config {
     my ($class, $plugin_config, $controller, $controller_cfg, $id, $uplinks, $config) = @_;
 
 }
@@ -164,21 +164,4 @@ sub on_update_hook {
     }
 }
 
-sub generate_controller_rawconfig {
-    my ($class, $plugin_config, $config) = @_;
-    return "";
-}
-
-sub write_controller_config {
-    my ($class, $plugin_config, $config) = @_;
-    return;
-}
-
-sub reload_controller {
-    my ($class) = @_;
-    return;
-}
-
 1;
-
-
diff --git a/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm b/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm
index f9241a097798..bde331fb12c4 100644
--- a/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm
+++ b/src/PVE/Network/SDN/Controllers/EvpnPlugin.pm
@@ -41,7 +41,7 @@ sub options {
 }
 
 # Plugin implementation
-sub generate_controller_config {
+sub generate_frr_config {
     my ($class, $plugin_config, $controller_cfg, $id, $uplinks, $config) = @_;
 
     my @peers;
@@ -119,7 +119,7 @@ sub generate_controller_config {
     return $config;
 }
 
-sub generate_controller_zone_config {
+sub generate_zone_frr_config {
     my ($class, $plugin_config, $controller, $controller_cfg, $id, $uplinks, $config) = @_;
 
     my $local_node = PVE::INotify::nodename();
@@ -279,7 +279,7 @@ sub generate_controller_zone_config {
     return $config;
 }
 
-sub generate_controller_vnet_config {
+sub generate_vnet_frr_config {
     my ($class, $plugin_config, $controller, $zone, $zoneid, $vnetid, $config) = @_;
 
     my $exitnodes = $zone->{'exitnodes'};
diff --git a/src/PVE/Network/SDN/Controllers/IsisPlugin.pm b/src/PVE/Network/SDN/Controllers/IsisPlugin.pm
index 97c6876db303..ace19aa7ffdc 100644
--- a/src/PVE/Network/SDN/Controllers/IsisPlugin.pm
+++ b/src/PVE/Network/SDN/Controllers/IsisPlugin.pm
@@ -55,7 +55,7 @@ sub options {
 }
 
 # Plugin implementation
-sub generate_controller_config {
+sub generate_frr_config {
     my ($class, $plugin_config, $controller, $id, $uplinks, $config) = @_;
 
     my $isis_ifaces = $plugin_config->{'isis-ifaces'};
@@ -87,7 +87,7 @@ sub generate_controller_config {
     return $config;
 }
 
-sub generate_controller_zone_config {
+sub generate_zone_frr_config {
     my ($class, $plugin_config, $controller, $controller_cfg, $id, $uplinks, $config) = @_;
 
 }
@@ -113,21 +113,4 @@ sub on_update_hook {
     }
 }
 
-sub generate_controller_rawconfig {
-    my ($class, $plugin_config, $config) = @_;
-    return "";
-}
-
-sub write_controller_config {
-    my ($class, $plugin_config, $config) = @_;
-    return;
-}
-
-sub reload_controller {
-    my ($class) = @_;
-    return;
-}
-
 1;
-
-
diff --git a/src/PVE/Network/SDN/Controllers/Plugin.pm b/src/PVE/Network/SDN/Controllers/Plugin.pm
index d6ffc5f35c74..26beff3370a8 100644
--- a/src/PVE/Network/SDN/Controllers/Plugin.pm
+++ b/src/PVE/Network/SDN/Controllers/Plugin.pm
@@ -63,48 +63,23 @@ sub parse_section_header {
     return undef;
 }
 
-sub generate_sdn_config {
-    my ($class, $plugin_config, $node, $data, $ctime) = @_;
-
-    die "please implement inside plugin";
-}
-
-sub generate_controller_config {
+sub generate_frr_config {
     my ($class, $plugin_config, $controller_cfg, $id, $uplinks, $config) = @_;
 
     die "please implement inside plugin";
 }
 
-
-sub generate_controller_zone_config {
+sub generate_zone_frr_config {
     my ($class, $plugin_config, $controller, $controller_cfg, $id, $uplinks, $config) = @_;
 
     die "please implement inside plugin";
 }
 
-sub generate_controller_vnet_config {
+sub generate_vnet_frr_config {
     my ($class, $plugin_config, $controller, $zoneid, $vnetid, $config) = @_;
 
 }
 
-sub generate_controller_rawconfig {
-    my ($class, $plugin_config, $config) = @_;
-
-    die "please implement inside plugin";
-}
-
-sub write_controller_config {
-    my ($class, $plugin_config, $config) = @_;
-
-    die "please implement inside plugin";
-}
-
-sub controller_reload {
-    my ($class) = @_;
-
-    die "please implement inside plugin";
-}
-
 sub on_delete_hook {
     my ($class, $controllerid, $zone_cfg) = @_;
 
-- 
2.39.5



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