[PATCH proxmox-ve-rs v2 1/3] fabrics: ospf: expose network-type interface property

[Gabriel Goller <g.goller@proxmox.com>]

Expose the network-type interface property to the api. Previously it was
internal-only and could be changed from point-to-point to broadcast by
setting or not setting an ip on the interface. Now we expose all the
possible options in the ui. This is also a Option, so that we can 1)
stay backwards compatible and 2) can let FRR figure out the correct
mode (e.g. when adding an ip with an explicit `peer`).

Also move the NetworkType enum to proxmox-sdn-types because we need it
in both proxmox-frr and proxmox-ve-config and we don't want to add the
`frr` feature to the whole section-config module.  Rename the existing
area module to ospf while at it, as it now contains more OSPF-specific
types than just the Area type.

Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
---
 proxmox-frr/src/ser/ospf.rs                   | 20 +--------------
 proxmox-sdn-types/src/lib.rs                  |  2 +-
 proxmox-sdn-types/src/{area.rs => ospf.rs}    | 25 +++++++++++++++++++
 proxmox-ve-config/src/sdn/fabric/frr.rs       | 13 +++++++---
 .../fabric/section_config/protocol/ospf.rs    |  8 +++++-
 5 files changed, 43 insertions(+), 25 deletions(-)
 rename proxmox-sdn-types/src/{area.rs => ospf.rs} (65%)

diff --git a/proxmox-frr/src/ser/ospf.rs b/proxmox-frr/src/ser/ospf.rs
index c18725e08f25..bd8113da125d 100644
--- a/proxmox-frr/src/ser/ospf.rs
+++ b/proxmox-frr/src/ser/ospf.rs
@@ -1,6 +1,7 @@
 use std::fmt::Debug;
 use std::net::Ipv4Addr;
 
+use proxmox_sdn_types::ospf::NetworkType;
 use serde::{Deserialize, Serialize};
 use thiserror::Error;
 
@@ -107,25 +108,6 @@ pub enum OspfInterfaceError {
     FrrWordParse(#[from] FrrWordError),
 }
 
-/// The NetworkType of the interface.
-///
-/// The most important options here are Broadcast (which is the default) and PointToPoint.
-/// When PointToPoint is set, then the interface has to have a /32 address and will be treated as
-/// unnumbered.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, Serialize, Deserialize)]
-#[serde(rename_all = "kebab-case")]
-pub enum NetworkType {
-    Broadcast,
-    NonBroadcast,
-    /// If the interface is unnumbered (i.e. the router-id /32 ip-address is set on the interface).
-    ///
-    /// If OSPF is used in an unnumbered way, you don't need to configure peer-to-peer (e.g. /31)
-    /// addresses at every interface, but you just need to set the router-id at the interface
-    /// (/32). You also need to configure the `ip ospf network point-to-point` FRR option.
-    PointToPoint,
-    PointToMultipoint,
-}
-
 /// The OSPF interface properties.
 ///
 /// The interface gets tied to its fabric by the area property and the FRR `ip ospf area <area>`
diff --git a/proxmox-sdn-types/src/lib.rs b/proxmox-sdn-types/src/lib.rs
index cff44917739e..efd9b8d2a00b 100644
--- a/proxmox-sdn-types/src/lib.rs
+++ b/proxmox-sdn-types/src/lib.rs
@@ -1,7 +1,7 @@
-pub mod area;
 pub mod bgp;
 pub mod net;
 pub mod openfabric;
+pub mod ospf;
 pub mod wireguard;
 
 use serde::{Deserialize, Serialize};
diff --git a/proxmox-sdn-types/src/area.rs b/proxmox-sdn-types/src/ospf.rs
similarity index 65%
rename from proxmox-sdn-types/src/area.rs
rename to proxmox-sdn-types/src/ospf.rs
index 3eba3b1b2545..42833587c204 100644
--- a/proxmox-sdn-types/src/area.rs
+++ b/proxmox-sdn-types/src/ospf.rs
@@ -1,3 +1,5 @@
+use proxmox_schema::api;
+use serde::{Deserialize, Serialize};
 use std::{fmt::Display, net::Ipv4Addr};
 
 use anyhow::Error;
@@ -61,3 +63,26 @@ impl Area {
         }
     }
 }
+
+/// The NetworkType of the interface.
+///
+/// The most important options here are Broadcast (which is the default) and PointToPoint.
+/// When PointToPoint is set, then the interface has to have a /32 address and will be treated as
+/// unnumbered.
+#[api]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum NetworkType {
+    /// Broadcast
+    Broadcast,
+    /// Non-Broadcast
+    NonBroadcast,
+    /// If the interface is unnumbered (i.e. the router-id /32 ip-address is set on the interface).
+    ///
+    /// If OSPF is used in an unnumbered way, you don't need to configure peer-to-peer (e.g. /31)
+    /// addresses at every interface, but you just need to set the router-id at the interface
+    /// (/32). You also need to configure the `ip ospf network point-to-point` FRR option.
+    PointToPoint,
+    /// Point-to-Multipoint
+    PointToMultipoint,
+}
diff --git a/proxmox-ve-config/src/sdn/fabric/frr.rs b/proxmox-ve-config/src/sdn/fabric/frr.rs
index 1ef840cf1cd4..d9e211e89c2c 100644
--- a/proxmox-ve-config/src/sdn/fabric/frr.rs
+++ b/proxmox-ve-config/src/sdn/fabric/frr.rs
@@ -555,10 +555,15 @@ fn build_ospf_interface(
         area,
         // Interfaces are always non-passive
         passive: None,
-        network_type: if interface.ip.is_some() {
-            None
-        } else {
-            Some(ser::ospf::NetworkType::PointToPoint)
+        network_type: match interface.network_type {
+            None => {
+                if interface.ip.is_some() {
+                    None
+                } else {
+                    Some(proxmox_sdn_types::ospf::NetworkType::PointToPoint)
+                }
+            }
+            Some(network_type) => Some(network_type),
         },
     };
 
diff --git a/proxmox-ve-config/src/sdn/fabric/section_config/protocol/ospf.rs b/proxmox-ve-config/src/sdn/fabric/section_config/protocol/ospf.rs
index 17bf88079f0b..0bf9ca721356 100644
--- a/proxmox-ve-config/src/sdn/fabric/section_config/protocol/ospf.rs
+++ b/proxmox-ve-config/src/sdn/fabric/section_config/protocol/ospf.rs
@@ -1,7 +1,7 @@
 use std::ops::{Deref, DerefMut};
 
 use proxmox_network_types::ip_address::Ipv4Cidr;
-use proxmox_sdn_types::area::Area;
+use proxmox_sdn_types::ospf::Area;
 use serde::{Deserialize, Serialize};
 
 use proxmox_schema::{api, property_string::PropertyString, ApiStringFormat, Updater};
@@ -228,6 +228,12 @@ pub struct OspfInterfaceProperties {
     /// OSPF area
     #[serde(skip_serializing_if = "Option::is_none")]
     pub(crate) area: Option<Area>,
+
+    /// Network Type of the interface. Contains all the NetworkTypes from FRR, but also includes a
+    /// `None` variant which enables us to decide the network-type automatically depending on if a
+    /// ip is given or not. (This also enables this change to be backwards-compatible).
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub(crate) network_type: Option<proxmox_sdn_types::ospf::NetworkType>,
 }
 
 impl OspfInterfaceProperties {
-- 
2.47.3