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From: Gabriel Goller <g.goller@proxmox.com>
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Date: Fri, 28 Mar 2025 18:13:14 +0100
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Subject: [pve-devel] [PATCH proxmox-perl-rs 7/7] perl-rs: sdn: implement
OSPF interface file configuration generation
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Add function to generate /etc/network/interfaces configuration for OSPF nodes including:
- Create dummy interfaces for each area with /32 addresses
- Configure IP addresses on physical interfaces
- Enable IP forwarding on all relevant interfaces
- Support both numbered and unnumbered interface configurations
Note that the `ospfd` daemon only supports IPv4 so we only have IPv4
addresses for OSPF. In a follow-up we could also support the `ospf6d`
daemon, which supports IPv6.
Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
---
pve-rs/src/sdn/ospf.rs | 54 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/pve-rs/src/sdn/ospf.rs b/pve-rs/src/sdn/ospf.rs
index 63ce0d53ffb8..9f6a7302e0db 100644
--- a/pve-rs/src/sdn/ospf.rs
+++ b/pve-rs/src/sdn/ospf.rs
@@ -337,6 +337,60 @@ mod export {
.ok_or(anyhow::anyhow!("node not found"))
}
+ #[export]
+ fn get_interfaces_etc_network_config(
+ #[try_from_ref] this: &PerlSectionConfig<OspfSectionConfig>,
+ node: Hostname,
+ ) -> Result<String, Error> {
+ let guard = this.section_config.lock().unwrap();
+ let mut interfaces = String::new();
+
+ guard.iter().try_for_each(|section| {
+ if let OspfSectionConfig::Node(node_section) = section.1 {
+ if node_section.node_id.node == node {
+ // create dummy interface for this fabric
+ writeln!(interfaces)?;
+ writeln!(interfaces, "auto dummy_{}", node_section.node_id.area)?;
+ writeln!(
+ interfaces,
+ "iface dummy_{} inet static",
+ node_section.node_id.area
+ )?;
+ writeln!(interfaces, "\tlink-type dummy")?;
+ writeln!(interfaces, "\tip-forward 1")?;
+ // add dummy interface address as /32
+ writeln!(interfaces, "\taddress {}/32", node_section.router_id)?;
+
+ // add ip-addrs to all other interfaces and ensure they exist
+ // also enable ip-forwarding on all interfaces as this is needed for unnumbered
+ // peering
+ node_section
+ .clone()
+ .interface
+ .into_iter()
+ .try_for_each(|i| {
+ let interface_name = i.name.clone();
+ writeln!(interfaces)?;
+ writeln!(interfaces, "auto {interface_name}")?;
+ if let Some(ip) = i.ip.map(|i| i.to_string()) {
+ writeln!(interfaces, "iface {interface_name} inet static")?;
+ writeln!(interfaces, "\taddress {}", ip)?;
+ writeln!(interfaces, "\tip-forward 1")?;
+ } else {
+ // unnumbered interface needs ip addresses configured in ospf
+ writeln!(interfaces, "iface {interface_name} inet static")?;
+ writeln!(interfaces, "\taddress {}/32", node_section.router_id)?;
+ writeln!(interfaces, "\tip-forward 1")?;
+ }
+ Ok::<(), std::fmt::Error>(())
+ })?;
+ }
+ }
+ Ok::<(), std::fmt::Error>(())
+ })?;
+ Ok(interfaces)
+ }
+
#[export]
pub fn enabled_daemons(
#[try_from_ref] this: &PerlSectionConfig<OspfSectionConfig>,
--
2.39.5
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