Merge remote-tracking branch 'origin/develop-new-upf' into doc-update-new-upf

ci-scripts/trfgen_entrypoint.sh

@@ -4,16 +4,76 @@ EBPF_GW_SETUP=${EBPF_GW_SETUP:-no}
 EBPF_GW_MTU=${EBPF_GW_MTU:-1460}
 
 if [[ ${EBPF_GW_SETUP} == "yes" ]];then
-  echo -e "Trying to disable TCP checksum and to setup MTU on N6 interface"
   N6_IF_NAME=(`ifconfig | grep -B1 "inet $EBPF_GW_N6_IP_ADDR" | awk '$1!="inet" && $1!="--" {print $1}' | sed -e "s@:@@"`)
-  echo -e "N6 interface is $N6_IF_NAME"
-  ethtool -K $N6_IF_NAME tx off
-  ifconfig $N6_IF_NAME mtu $EBPF_GW_MTU
-  ifconfig $N6_IF_NAME
-  echo -e "Adding UE IP routing to the N6 interface of UPF"
-  ip route add $UE_IP_ADDRESS_POOL via $N6_UPF_IP_ADDR dev $N6_IF_NAME
-  ip route
+  N3_IF_NAME=(`ifconfig | grep -B1 "inet $GW_N3_IP_ADDR" | awk '$1!="inet" && $1!="--" {print $1}' | sed -e "s@:@@"`)
+  SGI_IF_NAME=(`ifconfig | grep -B1 "inet $GW_SGI_IP_ADDR" | awk '$1!="inet" && $1!="--" {print $1}' | sed -e "s@:@@"`)
+  DEFAULT_ROUTE=(`ip route show default`)
+
+  if [[ -n "$N6_IF_NAME" ]]; then
+    echo
+    echo -e "1. Disable TCP Checksum on N6 interface ($N6_IF_NAME):"
+    ethtool -K $N6_IF_NAME tx off
+
+    echo
+    echo -e "2. Setup MTU ($EBPF_GW_MTU) on N6 interface ($N6_IF_NAME):"
+    ifconfig $N6_IF_NAME mtu $EBPF_GW_MTU
+    ifconfig $N6_IF_NAME
+
+    echo
+    echo -e "3. Add a route to UE subnet ($UE_IP_ADDRESS_POOL) via UPF N6 interface ($N6_UPF_IP_ADDR):"
+    ip route add $UE_IP_ADDRESS_POOL via $N6_UPF_IP_ADDR dev $N6_IF_NAME
+  else
+    echo
+    echo -e "N6 interface does not exist;\nThe UPF will not be able to reach the \nGateway neither the Internet"
+    echo
+  fi
+
+  if [[ -n "$N3_IF_NAME" ]]; then
+    echo
+    echo -e "4. Disable the useless N3 interface ($N3_IF_NAME):"
+    ifconfig $N3_IF_NAME down
+  fi
+
+  if [[ -n "$SGI_IF_NAME" ]]; then
+    echo
+    echo -e "5. Update the default route:"
+
+    if [[ -n "$DEFAULT_ROUTE" ]]; then
+      echo "Delete the default route: $DEFAULT_ROUTE"
+      ip route del default
+    fi
+
+    echo -e "Sgi interface is $SGI_IF_NAME"
+    ip route add default via $SGI_DEMO_OAI_ADDR
+    ip route
+  else
+    echo -e "Sgi interface does not exist;\nThe UPF will not be able to reach the Internet"
+  fi
+
+  echo
+  echo "6. Add SNAT rule to allow UE traffic to reach the internet:"
+  iptables -t nat -A POSTROUTING -o $SGI_IF_NAME -s $UE_IP_ADDRESS_POOL -j SNAT --to-source $GW_SGI_IP_ADDR
+
 fi
 
 echo "Done setting the configuration"
+
+echo
+echo -e "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+  echo "Gateway Has the following configuration :"
+  echo
+  echo "                 +---------------+                      "
+  echo "                 |               |                      "
+  echo "  (UPF)----------|  OAI-EXT-GW   |----------- (Internet)"
+  echo "              N6 |               | Sgi                  "
+  echo "                 +---------------+                      "
+  echo
+  echo "    GW N6 Interface ----------------: (Ifname, IPv4, MTU) = (${N6_IF_NAME}, $(ip addr show "${N6_IF_NAME}" | grep -oE 'inet ([0-9]+\.){3}[0-9]+' | awk '{print $2}'), $(ip link show "$N6_IF_NAME" | awk '/mtu/ {print $5}'))"
+  echo "    GW Sgi Interface ---------------: (Ifname, IPv4, MTU) = (${SGI_IF_NAME}, $(ip addr show "${SGI_IF_NAME}" | grep -oE 'inet ([0-9]+\.){3}[0-9]+' | awk '{print $2}'), $(ip link show "$SGI_IF_NAME" | awk '/mtu/ {print $5}'))"
+  echo "    GW Default Route ---------------: $(ip route show default)"
+  echo "    Route to UE --------------------: $(ip route show | grep -E "${UE_IP_ADDRESS_POOL}.*via ${N6_UPF_IP_ADDR}.*dev ${N6_IF_NAME}")"
+  echo "    Iptables Postrouting -----------: $(iptables -t nat -L | grep -E "SNAT.*${UE_IP_ADDRESS_POOL}.*to:${GW_SGI_IP_ADDR}")"
+  echo
+  echo -e "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+  echo
 exec "$@"

docker-compose/docker-compose-basic-nrf-ebpf.yaml

@@ -148,8 +148,11 @@ services:
         environment:
             - EBPF_GW_SETUP=yes
             - EBPF_GW_N6_IP_ADDR=192.168.72.135
+            - GW_SGI_IP_ADDR=192.168.70.135
+            - GW_N3_IP_ADDR=192.168.71.135
             - UE_IP_ADDRESS_POOL=12.1.1.0/24
             - N6_UPF_IP_ADDR=192.168.72.129
+            - SGI_DEMO_OAI_ADDR=192.168.70.129
         healthcheck:
             test: /bin/bash -c "ip r | grep 12.1.1"
             interval: 10s