From 01983101a6701a3a69c2b7275ab9d72007e6afbf Mon Sep 17 00:00:00 2001
From: Alexander Krotov <ilabdsf@yandex.ru>
Date: Sun, 2 Aug 2015 19:26:35 +0300
Subject: [PATCH] Fragmentation and concatenation benchmark

---
 utils/bench-packets.cc | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/utils/bench-packets.cc b/utils/bench-packets.cc
index 2a2407fbd..9f72285e2 100644
--- a/utils/bench-packets.cc
+++ b/utils/bench-packets.cc
@@ -253,6 +253,33 @@ benchC (uint32_t n)
   }
 }
 
+static void
+benchFragment (uint32_t n)
+{
+  BenchHeader<25> ipv4;
+  BenchHeader<8> udp;
+
+  for (uint32_t i= 0; i < n; i++) {
+    Ptr<Packet> p = Create<Packet> (2000);
+    p->AddHeader (udp);
+    p->AddHeader (ipv4);
+
+    Ptr<Packet> frag0 = p->CreateFragment (0, 250);
+    Ptr<Packet> frag1 = p->CreateFragment (250, 250);
+    Ptr<Packet> frag2 = p->CreateFragment (500, 500);
+    Ptr<Packet> frag3 = p->CreateFragment (1000, 500);
+    Ptr<Packet> frag4 = p->CreateFragment (1500, 500);
+
+    /* Mix fragments in different order */
+    frag2->AddAtEnd (frag3);
+    frag4->AddAtEnd (frag1);
+    frag2->AddAtEnd (frag4);
+    frag0->AddAtEnd (frag2);
+
+    frag0->RemoveHeader (ipv4);
+    frag0->RemoveHeader (udp);
+  }
+}
 
 static void
 runBench (void (*bench) (uint32_t), uint32_t n, char const *name)
@@ -301,6 +328,7 @@ int main (int argc, char *argv[])
   runBench (&benchB, n, "Just add headers");
   runBench (&benchC, n, "Remove by func call");
   runBench (&benchD, n, "Intermixed add/remove headers and tags");
+  runBench (&benchFragment, n, "Fragmentation and concatenation");
 
   return 0;
 }