Index: src/node/ipv4-packet-info-tag.h |
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+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
+/* |
+ * Copyright (c) 2010 Hajime Tazaki |
+ * |
+ * 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: Hajime Tazaki <tazaki@sfc.wide.ad.jp> |
+ */ |
+ |
+#ifndef __IPV4_PACKET_INFO_TAG_H__ |
+#define __IPV4_PACKET_INFO_TAG_H__ |
+ |
+#include "ns3/tag.h" |
+ |
+namespace ns3 { |
+ |
+ |
+class Node; |
+class Packet; |
+ |
+/** |
+ * \brief This class implements Linux struct pktinfo |
+ * in order to deliver ancillary information to the socket interface. |
+ * This is used with socket option such as IP_PKTINFO, IP_RECVTTL, |
+ * IP_RECVTOS. See linux manpage ip(7). |
+ * |
+ * This tag in the send direction is presently not enabled but we |
+ * would accept a patch along those lines in the future. |
+ */ |
+class Ipv4PacketInfoTag : public Tag |
+{ |
+public: |
+ Ipv4PacketInfoTag (); |
+ // Implemented, but not used in the stack yet |
+ void SetAddress (Ipv4Address addr); |
+ // Implemented, but not used in the stack yet |
+ Ipv4Address GetAddress (void) const; |
+ // This corresponds to "ipi_spec_dst" in struct in_pktinfo. |
+ // Implemented, but not used in the stack yet |
+ void SetLocalAddress (Ipv4Address addr); |
+ // This corresponds to "ipi_spec_dst" in struct in_pktinfo. |
+ // Implemented, but not used in the stack yet |
+ Ipv4Address GetLocalAddress (void) const; |
+ void SetRecvIf (uint32_t ifindex); |
+ uint32_t GetRecvIf (void) const; |
+ // Implemented, but not used in the stack yet |
+ void SetTtl (uint8_t ttl); |
+ // Implemented, but not used in the stack yet |
+ uint8_t GetTtl (void) const; |
+ |
+ static TypeId GetTypeId (void); |
+ virtual TypeId GetInstanceTypeId (void) const; |
+ virtual uint32_t GetSerializedSize (void) const; |
+ virtual void Serialize (TagBuffer i) const; |
+ virtual void Deserialize (TagBuffer i); |
+ virtual void Print (std::ostream &os) const; |
+ |
+private: |
+ // Linux IP_PKTINFO ip(7) implementation |
+ // |
+ // struct in_pktinfo { |
+ // unsigned int ipi_ifindex; /* Interface index */ |
+ // struct in_addr ipi_spec_dst; /* Local address */ |
+ // struct in_addr ipi_addr; /* Header Destination |
+ // address */ |
+ // }; |
+ |
+ Ipv4Address m_addr; |
+ Ipv4Address m_spec_dst; |
+ uint32_t m_ifindex; |
+ |
+ // Uset for IP_RECVTTL, though not implemented yet. |
+ uint8_t m_ttl; |
+}; |
+} //namespace ns3 |
+ |
+#endif /* __IPV4_PACKET_INFO_TAG_H__ */ |
+ |