Subnets

roles/core/tasks/install.yml

@@ -15,10 +15,14 @@
 # TODO: check if interface subnet is valid
 - set_fact:
     ran_subnet: "{{ result.stdout if (core.ran_subnet == '') else core.ran_subnet }}"
+    access_gw: "{{ core.upf.access_subnet[:-3] }}"
+    access_ip: "{{ core.upf.default_upf.ip.access + '/24' }}"
+    core_gw: "{{ core.upf.core_subnet[:-3] }}"
+    core_ip: "{{ core.upf.default_upf.ip.core + '/24' }}"
   when: inventory_hostname in groups['master_nodes']
 
 - debug:
-    var: "ran_subnet"
+    var: ran_subnet
   when: inventory_hostname in groups['master_nodes']
 
 - name: remove /tmp/sdcore-5g-values.yaml

roles/core/templates/radio-5g-values.yaml

@@ -223,14 +223,14 @@ omec-user-plane:
         ipam: static
         cniPlugin: macvlan  # Can be any other plugin. Dictates how IP address are assigned
         iface: {{ core.data_iface }}
-        gateway: 192.168.252.1
-        ip: {{ core.upf.default_upf.ip.access }}
+        gateway: {{ access_gw }}
+        ip: {{ access_ip }}
       core:
         ipam: static
         cniPlugin: macvlan  # Can be any other plugin. Dictates how IP address are assigned
         iface: {{ core.data_iface }}
-        gateway: 192.168.250.1
-        ip: {{ core.upf.default_upf.ip.core }}
+        gateway: {{ core_gw }}
+        ip: {{ core_ip }}
       cfgFiles:
         upf.jsonc:
           mode: af_packet                # This mode implies no DPDK

roles/core/templates/sdcore-5g-sriov-values.yaml

@@ -330,15 +330,15 @@ omec-user-plane:
         cniPlugin: vfioveth    # Can be any other plugin. Dictates how IP address are assigned
         iface: {{ core.data_iface }}
         resourceName: "intel.com/intel_sriov_vfio_access"
-        gateway: 192.168.252.1
-        ip: {{ core.upf.default_upf.ip.access }}
+        gateway: {{ access_gw }}
+        ip: {{ access_ip }}
       core:
         ipam: static
         cniPlugin: vfioveth    # Can be any other plugin. Dictates how IP address are assigned
         iface: {{ core.data_iface }}
         resourceName: "intel.com/intel_sriov_vfio_core"
-        gateway: 192.168.250.1
-        ip: {{ core.upf.default_upf.ip.core }}
+        gateway: {{ core_gw }}
+        ip: {{ core_ip }}
       cfgFiles:
         upf.jsonc:
           mode: dpdk

roles/core/templates/sdcore-5g-values.yaml

@@ -328,14 +328,14 @@ omec-user-plane:
         ipam: static
         cniPlugin: macvlan  # Can be any other plugin. Dictates how IP address are assigned
         iface: {{ core.data_iface }}
-        gateway: 192.168.252.1
-        ip: {{ core.upf.default_upf.ip.access }}
+        gateway: {{ access_gw }}
+        ip: {{ access_ip }}
       core:
         ipam: static
         cniPlugin: macvlan  # Can be any other plugin. Dictates how IP address are assigned
         iface: {{ core.data_iface }}
-        gateway: 192.168.250.1
-        ip: {{ core.upf.default_upf.ip.core }}
+        gateway: {{ core_gw }}
+        ip: {{ core_ip }}
       cfgFiles:
         upf.jsonc:
           mode: af_packet                # This mode implies no DPDK

roles/router/tasks/uninstall.yml

@@ -110,7 +110,7 @@
   shell: |
     ip link del access || true
     ip link del core || true
-    iptables -t nat -D POSTROUTING -s 172.250.0.0/16 -o {{ core.data_iface }} -j MASQUERADE || true
+    iptables -t nat -D POSTROUTING -s {{ core.upf.default_upf.ue_ip_pool }} -o {{ core.data_iface }} -j MASQUERADE || true
   when: inventory_hostname in groups['master_nodes']
   become: true
   ignore_errors: yes

roles/router/templates/systemd/20-aether-access.network

@@ -6,4 +6,4 @@ Name=access
 
 [Network]
 IPForward=yes
-Address=192.168.252.1/24
+Address={{ core.upf.access_subnet }}

roles/router/templates/systemd/20-aether-core.network

@@ -6,8 +6,8 @@ Name=core
 
 [Network]
 IPForward=yes
-Address=192.168.250.1/24
+Address={{ core.upf.core_subnet }}
 
 [Route]
-Gateway=192.168.250.3
-Destination=172.250.0.0/16
+Gateway={{ core.upf.default_upf.ip.core }}
+Destination={{ core.upf.default_upf.ue_ip_pool }}

roles/router/templates/systemd/aether-ue-nat.service

@@ -3,7 +3,7 @@
 
 [Service]
 Type=oneshot
-ExecStart=/bin/bash -c "sudo iptables -t nat -C POSTROUTING -s 172.250.0.0/16 -o {{ core.data_iface }} -j MASQUERADE || sudo iptables -t nat -A POSTROUTING -s 172.250.0.0/16 -o {{ core.data_iface }} -j MASQUERADE"
+ExecStart=/bin/bash -c "sudo iptables -t nat -C POSTROUTING -s {{ core.upf.default_upf.ue_ip_pool }} -o {{ core.data_iface }} -j MASQUERADE || sudo iptables -t nat -A POSTROUTING -s {{ core.upf.default_upf.ue_ip_pool }} -o {{ core.data_iface }} -j MASQUERADE"
 
 [Install]
 WantedBy=sys-subsystem-net-devices-core.device

roles/upf/defaults/main.yml

@@ -11,11 +11,11 @@ core:
     additional_upfs:
       "1":
         ip:
-          access: "192.168.252.6/24"
-          core:   "192.168.250.6/24"
+          access: "192.168.252.6"
+          core:   "192.168.250.6"
         ue_ip_pool: "172.248.0.0/16"
       # "2":
       #   ip:
-      #     access: "192.168.252.7/24"
-      #     core:   "192.168.250.7/24"
-      #   ue_ip_pool: "172.248.0.0/16"
+      #     access: "192.168.252.7"
+      #     core:   "192.168.250.7"
+      #   ue_ip_pool: "172.247.0.0/16"

roles/upf/tasks/install.yml

@@ -23,8 +23,10 @@
     dest: /tmp/upf-{{ item.key }}.yaml
   vars:
     ran_subnet: "{{ran_subnet}}"
-    upf_access_ip: "{{ item.value.ip.access }}"
-    upf_core_ip:  "{{ item.value.ip.core }}"
+    access_gw: "{{ core.upf.access_subnet[:-3] }}"
+    core_gw: "{{ core.upf.core_subnet[:-3] }}"
+    upf_access_ip: "{{ item.value.ip.access + '/24' }}"
+    upf_core_ip: "{{ item.value.ip.core + '/24' }}"
     upf_ue_ip_pool: "{{ item.value.ue_ip_pool }}"
   with_dict: "{{ core.upf.additional_upfs}}"
   when: inventory_hostname in groups['master_nodes']
@@ -52,7 +54,7 @@
 
 - name: configure route for upf traffic on gnbsim node
   shell: |
-    ip route add {{ item.value.ue_ip_pool }} via {{ item.value.ip.core[:-3] }}
+    ip route add {{ item.value.ue_ip_pool }} via {{ item.value.ip.core }}
   when: inventory_hostname in groups['master_nodes']
   with_dict: "{{ core.upf.additional_upfs}}"
   become: true

roles/upf/tasks/uninstall.yml

@@ -2,7 +2,7 @@
 
 - name: delete route for upf to UE
   shell: |
-    ip route del {{ item.value.ue_ip_pool }} via {{ item.value.ip.core[:-3] }}
+    ip route del {{ item.value.ue_ip_pool }} via {{ item.value.ip.core }}
   when: inventory_hostname in groups['master_nodes']
   with_dict: "{{ core.upf.additional_upfs}}"
   become: true

roles/upf/templates/upf-5g-values.yaml

@@ -31,13 +31,13 @@ config:
       ipam: static
       cniPlugin: macvlan  # Can be any other plugin. Dictates how IP address are assigned
       iface: {{ core.data_iface }}
-      gateway: 192.168.252.1
+      gateway: {{ access_gw }}
       ip: {{ upf_access_ip }}
     core:
       ipam: static
       cniPlugin: macvlan  # Can be any other plugin. Dictates how IP address are assigned
       iface: {{ core.data_iface }}
-      gateway: 192.168.250.1
+      gateway: {{ core_gw }}
       ip: {{ upf_core_ip }}
     cfgFiles:
       upf.jsonc:

vars/main.yml

@@ -2,25 +2,31 @@ core:
   standalone: true
   data_iface: ens18
   values_file: "roles/core/templates/sdcore-5g-values.yaml"
-  ran_subnet: "172.20.0.0/16" # set it to empty to get subnet from 'data_iface'
+  ran_subnet: "172.20.0.0/16"		 # set it to empty to get subnet from 'data_iface'
 
   helm:
     local_charts: false
     chart_ref: aether/sd-core
     chart_version: 2.0.0
 
   upf:
-    ip_prefix: "192.168.252.0/24"
-    iface: "access"
+    access_subnet: "192.168.252.1/24"	# access subnet & gateway
+    core_subnet: "192.168.250.1/24"	# core subnet & gateway
+    mode: af_packet			# Options: af_packet or dpdk
+    default_upf:
+      ip:
+        access: "192.168.252.3"
+        core:   "192.168.250.3"
+      ue_ip_pool: "172.250.0.0/16"
 
     additional_upfs:
       "1":
         ip:
-          access: "192.168.252.6/24"
-          core:   "192.168.250.6/24"
+          access: "192.168.252.6"
+          core:   "192.168.250.6"
         ue_ip_pool: "172.248.0.0/16"
       # "2":
       #   ip:
-      #     access: "192.168.252.7/24"
-      #     core:   "192.168.250.7/24"
+      #     access: "192.168.252.7"
+      #     core:   "192.168.250.7"
       #   ue_ip_pool: "172.248.0.0/16"