Add fat tree topo build script, and P4 flow entry configuration to help build large topo network simulation

Author: Mingyumaz

CMakeLists.txt

@@ -50,6 +50,7 @@ build_lib(
         utils/format-utils.cc
         utils/switch-api.cc
         utils/p4-queue.cc
+        utils/fattree-topo-helper.cc
         model/p4-bridge-channel.cc
         model/p4-p2p-channel.cc
         model/custom-header.cc
@@ -64,12 +65,14 @@ build_lib(
         helper/p4-helper.cc
         helper/p4-topology-reader-helper.cc
         helper/p4-p2p-helper.cc
+        helper/build-flowtable-helper.cc
     HEADER_FILES # equivalent to headers.source
         utils/p4-queue.h
         utils/format-utils.h
         utils/switch-api.h
         utils/register-access-v1model.h
         utils/primitives-v1model.h
+        utils/fattree-topo-helper.h
         model/p4-bridge-channel.h
         model/p4-p2p-channel.h
         model/custom-header.h
@@ -84,6 +87,7 @@ build_lib(
         helper/p4-helper.h
         helper/p4-topology-reader-helper.h
         helper/p4-p2p-helper.h
+        helper/build-flowtable-helper.h
     LIBRARIES_TO_LINK 
         ${libcore} 
         ${libnetwork}  

examples/CMakeLists.txt

@@ -85,6 +85,17 @@ build_lib_example(
     ${libflow-monitor}
 )
 
+# fattree test
+build_lib_example(
+  NAME p4-topo-fattree
+  SOURCE_FILES p4-topo-fattree.cc
+  LIBRARIES_TO_LINK
+    ${libp4sim}
+    ${libinternet}
+    ${libapplications}
+    ${libnetwork}
+)
+
 # [ ================= PSA Arch ================= ]
 
 # simple 2 hosts 1 switch topology [ipv4 forwarding]
@@ -112,6 +123,18 @@ build_lib_example(
     ${libnetwork}
 )
 
+# fattree test
+build_lib_example(
+  NAME topo-fattree
+  SOURCE_FILES topo-fattree.cc
+  LIBRARIES_TO_LINK
+    ${libp4sim}
+    ${libinternet}
+    ${libapplications}
+    ${libnetwork}
+    ${libnix-vector-routing}
+)
+
 # [ ================= Test ================= ]
 
 # custom header test

examples/p4-basic-tunnel.cc

@@ -40,7 +40,7 @@ unsigned long start = getTickCount();
 double global_start_time = 1.0;
 double sink_start_time = global_start_time + 1.0;
 double client_start_time = sink_start_time + 1.0;
-double client_stop_time = client_start_time + 30; // sending time
+double client_stop_time = client_start_time + 3; // sending time
 double sink_stop_time = client_stop_time + 5;
 double global_stop_time = sink_stop_time + 5;
 
@@ -185,7 +185,7 @@ main(int argc, char* argv[])
 
     int running_number = 0;
     uint16_t pktSize = 1000; // in Bytes. 1458 to prevent fragments, default 512
-    std::string appDataRate[] = {"10Mbps", "40Mbps"}; // Default application data rate
+    std::string appDataRate[] = {"1Mbps", "4Mbps"}; // Default application data rate
     std::string ns3_link_rate = "100Mbps";
     bool enableTracePcap = true;
 
@@ -350,7 +350,7 @@ main(int argc, char* argv[])
     // p4SwitchHelper.SetDeviceAttribute("ChannelType", UintegerValue(0));
     p4SwitchHelper.SetDeviceAttribute("P4SwitchArch", UintegerValue(0));
     p4SwitchHelper.SetDeviceAttribute("ChannelType", UintegerValue(1));
-    p4SwitchHelper.SetDeviceAttribute("SwitchRate", UintegerValue(10000));
+    p4SwitchHelper.SetDeviceAttribute("SwitchRate", UintegerValue(1000));
 
     for (unsigned int i = 0; i < switchNum; i++)
     {

examples/p4-l3-router.cc

@@ -263,4 +263,4 @@ main(int argc, char* argv[])
     Simulator::Destroy();
 
     return 0;
-}
+}