1 files changed, 112 insertions, 0 deletions
diff --git a/tests/data_plane/vpp_lite_topo/topologies/3_node_snake_topo.sh b/tests/data_plane/vpp_lite_topo/topologies/3_node_snake_topo.sh
new file mode 100644
index 0000000..366bcbc
--- /dev/null
+++ b/tests/data_plane/vpp_lite_topo/topologies/3_node_snake_topo.sh
@@ -0,0 +1,112 @@
+
+function 3_node_snake_topo_clean
+{
+  echo "Clearing all VPP instances.."
+  pkill vpp --signal 9
+  rm /dev/shm/*
+
+  echo "Cleaning topology.."
+  ip netns exec xtr-ns12 ifconfig br12 down
+  ip netns exec xtr-ns23 ifconfig br23 down
+
+  ip netns exec xtr-ns12 brctl delbr br12
+  ip netns exec xtr-ns23 brctl delbr br23
+
+  ip link del dev veth_vpp1 &> /dev/null
+  ip link del dev veth_vpp2 &> /dev/null
+  ip link del dev veth_xtr1_xtr2 &> /dev/null
+  ip link del dev veth_xtr2_xtr1 &> /dev/null
+  ip link del dev veth_xtr2_xtr3 &> /dev/null
+  ip link del dev veth_xtr3_xtr2 &> /dev/null
+
+  ip netns del vppns1 &> /dev/null
+  ip netns del vppns2 &> /dev/null
+  ip netns del xtr-ns12 &> /dev/null
+  ip netns del xtr-ns23 &> /dev/null
+}
+
+function 3_node_snake_topo_setup
+{
+  ip netns add vppns1
+  ip netns add vppns2
+  ip netns add xtr-ns12
+  ip netns add xtr-ns23
+
+  ip link add veth_xtr1_xtr2 type veth peer name xtr1_xtr2
+  ip link add veth_xtr2_xtr1 type veth peer name xtr2_xtr1
+  ip link add veth_xtr2_xtr3 type veth peer name xtr2_xtr3
+  ip link add veth_xtr3_xtr2 type veth peer name xtr3_xtr2
+
+  # enable peer interfaces
+  ip link set dev xtr1_xtr2 up
+  ip link set dev xtr2_xtr1 up
+  ip link set dev xtr2_xtr3 up
+  ip link set dev xtr3_xtr2 up
+
+  ip link set dev veth_xtr1_xtr2 up netns xtr-ns12
+  ip link set dev veth_xtr2_xtr1 up netns xtr-ns12
+  ip link set dev veth_xtr2_xtr3 up netns xtr-ns23
+  ip link set dev veth_xtr3_xtr2 up netns xtr-ns23
+
+  ip netns exec xtr-ns12 brctl addbr br12
+  ip netns exec xtr-ns23 brctl addbr br23
+
+  ip netns exec xtr-ns12 brctl addif br12 veth_xtr1_xtr2
+  ip netns exec xtr-ns12 brctl addif br12 veth_xtr2_xtr1
+  ip netns exec xtr-ns12 ifconfig br12 up
+  ip netns exec xtr-ns23 brctl addif br23 veth_xtr2_xtr3
+  ip netns exec xtr-ns23 brctl addif br23 veth_xtr3_xtr2
+  ip netns exec xtr-ns23 ifconfig br23 up
+
+  # create and configure 1st veth client to vpp pair
+  ip link add veth_vpp1 type veth peer name vpp1
+  ip link set dev vpp1 up
+  ip link set dev veth_vpp1 up netns vppns1
+
+  # create and configure 2nd veth client to vpp pair
+  ip link add veth_vpp2 type veth peer name vpp2
+  ip link set dev vpp2 up
+  ip link set dev veth_vpp2 up netns vppns2
+
+  ip netns exec vppns1 \
+  bash -c "
+    ip link set dev lo up
+    ip addr add 6.0.1.2/24 dev veth_vpp1
+    ip route add 6.0.2.0/24 via 6.0.1.1
+    ip addr add 6:0:1::2/64 dev veth_vpp1
+    ip route add 6:0:2::0/64 via 6:0:1::1
+  "
+
+  ip netns exec vppns2 \
+  bash -c "
+    ip link set dev lo up
+    ip addr add 6.0.2.2/24 dev veth_vpp2
+    ip route add 6.0.1.0/24 via 6.0.2.1
+    ip addr add 6:0:2::2/64 dev veth_vpp2
+    ip route add 6:0:1::0/64 via 6:0:2::1
+  "
+
+  # generate config files
+  ./scripts/generate_config.py ${VPP_LITE_CONF} ${CFG_METHOD}
+
+  start_vpp 5002 vpp1
+  start_vpp 5003 vpp2
+  start_vpp 5004 vpp3
+
+  sleep 2
+  echo "* Selected configuration method: $CFG_METHOD"
+  if [ "$CFG_METHOD" == "cli" ] ; then
+    echo "exec ${VPP_LITE_CONF}/vpp1.cli" | nc 0 5002
+    echo "exec ${VPP_LITE_CONF}/vpp2.cli" | nc 0 5003
+    echo "exec ${VPP_LITE_CONF}/vpp3.cli" | nc 0 5004
+  elif [ "$CFG_METHOD" == "vat" ] ; then
+    ${VPP_API_TEST} chroot prefix vpp1 script in ${VPP_LITE_CONF}/vpp1.vat
+    ${VPP_API_TEST} chroot prefix vpp2 script in ${VPP_LITE_CONF}/vpp2.vat
+    ${VPP_API_TEST} chroot prefix vpp3 script in ${VPP_LITE_CONF}/vpp3.vat
+  else
+    echo "=== WARNING:"
+    echo "=== Invalid configuration method selected!"
+    echo "=== To resolve this set env variable CFG_METHOD to vat or cli."
+    echo "==="
+  fi
+}