This allows the ovn-controller to later find all ports that
participate in dynamic routing.

Signed-off-by: Felix Huettner <[email protected]>
---
v5->v6:
  * addressed review comments
v4->v5: skipped
v2->v3:
  * A lot of minor review comments.
  * Added more documentation and news

 NEWS                |  8 ++++++++
 northd/northd.c     | 20 ++++++++++++++++++++
 ovn-nb.xml          | 41 +++++++++++++++++++++++++++++++++++++++++
 tests/ovn-northd.at | 31 +++++++++++++++++++++++++++++++
 4 files changed, 100 insertions(+)

diff --git a/NEWS b/NEWS
index 3547f659f..78245e1b4 100644
--- a/NEWS
+++ b/NEWS
@@ -53,6 +53,14 @@ Post v24.09.0
      * Add the option "dynamic-routing-connected-as-host-routes" to LRPs. If
        set to true then connected routes are announced as individual host
        routes.
+     * Add the option "dynamic-routing-maintain-vrf" to LRPs. If set the
+       ovn-controller will create a vrf named "ovnvrf" + datapath id that
+       includes all advertised and learned routes.
+       The vrf name can be overwritten with the "dynamic-routing-vrf-name"
+       setting.
+     * Add the option "dynamic-routing-ifname" to LRPs. If set only routes
+       learned from a linux iterfaces with that name are treated as relevant
+       routes for this LRP.
 
 OVN v24.09.0 - 13 Sep 2024
 --------------------------
diff --git a/northd/northd.c b/northd/northd.c
index 3f14cc75c..573d3cb24 100644
--- a/northd/northd.c
+++ b/northd/northd.c
@@ -4111,6 +4111,26 @@ sync_pb_for_lrp(struct ovn_port *op,
         }
     }
 
+    if (is_cr_port(op) || chassis_name) {
+        if (op->od->dynamic_routing) {
+            smap_add(&new, "dynamic-routing", "true");
+            if (smap_get_bool(&op->nbrp->options,
+                              "dynamic-routing-maintain-vrf", false)) {
+                smap_add(&new, "dynamic-routing-maintain-vrf", "true");
+            }
+            const char *vrfname = smap_get(&op->od->nbr->options,
+                                           "dynamic-routing-vrf-name");
+            if (vrfname) {
+                smap_add(&new, "dynamic-routing-vrf-name", vrfname);
+            }
+            const char *ifname = smap_get(&op->nbrp->options,
+                                          "dynamic-routing-ifname");
+            if (ifname) {
+                smap_add(&new, "dynamic-routing-ifname", ifname);
+            }
+        }
+    }
+
     const char *ipv6_pd_list = smap_get(&op->sb->options, "ipv6_ra_pd_list");
     if (ipv6_pd_list) {
         smap_add(&new, "ipv6_ra_pd_list", ipv6_pd_list);
diff --git a/ovn-nb.xml b/ovn-nb.xml
index d0bdb5058..cf417884e 100644
--- a/ovn-nb.xml
+++ b/ovn-nb.xml
@@ -3005,6 +3005,16 @@ or
              table="Logical_Router_Port"/>.
 >>>>>>> 20721b41b (northd: Add filtering which routes to advertise.)
       </column>
+
+      <column name="options" key="dynamic-routing-vrf-name"
+          type='{"type": "string"}'>
+        Only relevant if <ref column="options" key="dynamic-routing"/>
+        is set to <code>true</code>.
+
+        This defines the name of the vrf the ovn-controller will use to
+        advertise and learn routes. If not set the vrf will be named "ovnvrf"
+        with the datapath id of the Logical Router appended to it.
+      </column>
     </group>
 
     <group title="Common Columns">
@@ -3779,6 +3789,37 @@ or
           </li>
         </ul>
       </column>
+
+      <column name="options" key="dynamic-routing-maintain-vrf"
+         type='{"type": "boolean"}'>
+        Only relevant if <ref column="options" key="dynamic-routing"
+        table="Logical_Router"/> on the respective Logical_Router is set
+        to <code>true</code>.
+
+        If this LRP is bound to a specific chassis then the ovn-controller of
+        this chassis will maintain a vrf.
+        This vrf will contain all the routes that should be announced from
+        this LRP.
+        Unless <ref column="options" key="dynamic-routing-vrf-name"
+        table="Logical_Router"/> is set the vrf will be named "ovnvrf" with
+        the datapath id of the Logical Router appended to it.
+      </column>
+
+      <column name="options" key="dynamic-routing-ifname"
+          type='{"type": "string"}'>
+        Only relevant if <ref column="options" key="dynamic-routing"
+        table="Logical_Router"/> on the respective Logical_Router is set
+        to <code>true</code>.
+
+        Only learn routes associated with the interface specified here.
+        This allows a single chassis to learn different routes on separate
+        LRPs bound to this chassis.
+
+        This is usefully e.g. in the case of a chassis with multiple links
+        towards the network fabric where all of them run BGP individually.
+        This option allows to have a 1:1 mapping between a single LRP and an
+        individual link.
+      </column>
     </group>
 
     <group title="Attachment">
diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
index 18d367fa5..873e5c45e 100644
--- a/tests/ovn-northd.at
+++ b/tests/ovn-northd.at
@@ -14905,6 +14905,37 @@ check_row_count Advertised_Route 1 datapath=$datapath 
logical_port=$sw0 ip_prefi
 AT_CLEANUP
 ])
 
+OVN_FOR_EACH_NORTHD_NO_HV([
+AT_SETUP([dynamic-routing - lrp options])
+AT_KEYWORDS([dynamic-routing])
+ovn_start
+
+check ovn-nbctl lr-add lr0
+check ovn-nbctl set Logical_Router lr0 option:dynamic-routing=true \
+                                 
option:dynamic-routing-redistribute="connected;static"
+check ovn-nbctl lrp-add lr0 lr0-sw0 00:00:00:00:ff:01 10.0.0.1/24
+check ovn-nbctl set Logical_Router lr0 options:chassis=hv1
+check ovn-nbctl ls-add sw0
+check ovn-nbctl lsp-add sw0 sw0-lr0
+check ovn-nbctl --wait=sb set Logical_Switch_Port sw0-lr0 type=router 
options:router-port=lr0-sw0
+
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -q 
'dynamic-routing=true'])
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -qv 
'dynamic-routing-maintain-vrf'])
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -qv 
'dynamic-routing-vrf-name'])
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -qv 
'dynamic-routing-ifname'])
+
+check ovn-nbctl set Logical_Router lr0 options:dynamic-routing-vrf-name=myvrf
+check ovn-nbctl --wait=sb set Logical_Router_Port lr0-sw0 
options:dynamic-routing-maintain-vrf=true \
+                                                          
options:dynamic-routing-ifname=myif
+
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -q 
'dynamic-routing=true'])
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -q 
'dynamic-routing-maintain-vrf=true'])
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -q 
'dynamic-routing-vrf-name=myvrf'])
+AT_CHECK([fetch_column sb:Port_Binding options logical_port=lr0-sw0 | grep -q 
'dynamic-routing-ifname=myif'])
+
+AT_CLEANUP
+])
+
 OVN_FOR_EACH_NORTHD_NO_HV([
 AT_SETUP([dynamic-routing incremental processing])
 AT_KEYWORDS([dynamic-routing])
-- 
2.47.1


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