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Unified Diff: src/internet/model/ipv6-packet-filter.cc

Issue 284530043: Introduce the traffic control layer (Closed)
Patch Set: Use DoInitialize to check config and initialize queue discs Created 8 years, 1 month ago
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Index: src/internet/model/ipv6-packet-filter.cc
===================================================================
new file mode 100644
--- /dev/null
+++ b/src/internet/model/ipv6-packet-filter.cc
@@ -0,0 +1,143 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2016 Universita' degli Studi di Napoli Federico II
+ * 2016 University of Washington
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Authors: Stefano Avallone <stavallo@unina.it>
+ * Tom Henderson <tomhend@u.washington.edu>
+ */
+
+#include "ns3/log.h"
+#include "ns3/enum.h"
+#include "ipv6-queue-disc-item.h"
+#include "ipv6-packet-filter.h"
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("Ipv6PacketFilter");
+
+NS_OBJECT_ENSURE_REGISTERED (Ipv6PacketFilter);
+
+TypeId
+Ipv6PacketFilter::GetTypeId (void)
+{
+ static TypeId tid = TypeId ("ns3::Ipv6PacketFilter")
+ .SetParent<PacketFilter> ()
+ .SetGroupName ("Internet")
+ ;
+ return tid;
+}
+
+Ipv6PacketFilter::Ipv6PacketFilter ()
+{
+ NS_LOG_FUNCTION (this);
+}
+
+Ipv6PacketFilter::~Ipv6PacketFilter()
+{
+ NS_LOG_FUNCTION (this);
+}
+
+bool
+Ipv6PacketFilter::CheckProtocol (Ptr<QueueDiscItem> item) const
+{
+ NS_LOG_FUNCTION (this << item);
+ return (DynamicCast<Ipv6QueueDiscItem> (item) != 0);
+}
+
+// ------------------------------------------------------------------------- //
+
+NS_OBJECT_ENSURE_REGISTERED (PfifoFastIpv6PacketFilter);
+
+TypeId
+PfifoFastIpv6PacketFilter::GetTypeId (void)
+{
+ static TypeId tid = TypeId ("ns3::PfifoFastIpv6PacketFilter")
+ .SetParent<Ipv6PacketFilter> ()
+ .SetGroupName ("Internet")
+ .AddConstructor<PfifoFastIpv6PacketFilter> ()
+ ;
+ return tid;
+}
+
+PfifoFastIpv6PacketFilter::PfifoFastIpv6PacketFilter ()
+{
+ NS_LOG_FUNCTION (this);
+}
+
+PfifoFastIpv6PacketFilter::~PfifoFastIpv6PacketFilter()
+{
+ NS_LOG_FUNCTION (this);
+}
+
+int32_t
+PfifoFastIpv6PacketFilter::DoClassify (Ptr<QueueDiscItem> item) const
+{
+ NS_LOG_FUNCTION (this << item);
+ uint32_t band;
+ Ptr<Ipv6QueueDiscItem> ipv6Item = DynamicCast<Ipv6QueueDiscItem> (item);
+
+ NS_ASSERT (ipv6Item != 0);
+
+ Ipv6Header::DscpType dscp = ipv6Item->GetHeader ().GetDscp ();
+ band = DscpToBand (dscp);
+ NS_LOG_DEBUG ("Found Ipv6 packet; DSCP " << ipv6Item->GetHeader ().DscpTypeToString (dscp) << " band " << band);
+
+ return band;
+}
+
+uint32_t
+PfifoFastIpv6PacketFilter::DscpToBand (Ipv6Header::DscpType dscpType) const
+{
+ NS_LOG_FUNCTION (this);
+
+ uint32_t band = 1;
+ switch (dscpType) {
+ case Ipv6Header::DSCP_EF :
+ case Ipv6Header::DSCP_AF13 :
+ case Ipv6Header::DSCP_AF23 :
+ case Ipv6Header::DSCP_AF33 :
+ case Ipv6Header::DSCP_AF43 :
+ case Ipv6Header::DscpDefault :
+ case Ipv6Header::DSCP_CS2 :
+ case Ipv6Header::DSCP_CS3 :
+ band = 1;
+ break;
+ case Ipv6Header::DSCP_AF11 :
+ case Ipv6Header::DSCP_AF21 :
+ case Ipv6Header::DSCP_AF31 :
+ case Ipv6Header::DSCP_AF41 :
+ case Ipv6Header::DSCP_CS1 :
+ band = 2;
+ break;
+ case Ipv6Header::DSCP_AF12 :
+ case Ipv6Header::DSCP_AF22 :
+ case Ipv6Header::DSCP_AF32 :
+ case Ipv6Header::DSCP_AF42 :
+ case Ipv6Header::DSCP_CS4 :
+ case Ipv6Header::DSCP_CS5 :
+ case Ipv6Header::DSCP_CS6 :
+ case Ipv6Header::DSCP_CS7 :
+ band = 0;
+ break;
+ default :
+ band = 1;
+ }
+ NS_LOG_DEBUG ("Band returned: " << band);
+ return band;
+}
+
+} // namespace ns3

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