Added Dot1Q class.

include/dot1q.h

@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2012, Nasel
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following disclaimer
+ *   in the documentation and/or other materials provided with the
+ *   distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef TINS_DOT1Q_H
+#define TINS_DOT1Q_H
+
+#include "pdu.h"
+#include "endianness.h"
+#include "small_uint.h"
+
+namespace Tins {
+class Dot1Q : public PDU {
+public:
+    /**
+     * This PDU's flag.
+     */
+    static const PDU::PDUType pdu_flag = PDU::DOT1Q;
+    /**
+     * Default constructor
+     */
+    Dot1Q();
+
+    /**
+     * \brief Constructor which creates an Dot1Q object from a buffer and 
+     * adds all identifiable PDUs found in the buffer as children of this 
+     * one.
+     * 
+     * \param buffer The buffer from which this PDU will be constructed.
+     * \param total_sz The total size of the buffer.
+     */
+    Dot1Q(const uint8_t *buffer, uint32_t total_sz);
+
+    // Getters
+
+    /**
+     * \brief Returns the header size.
+     *
+     * This metod overrides PDU::header_size. \sa PDU::header_size
+     */
+    uint32_t header_size() const;
+
+    /**
+     * \brief Returns the frame's trailer size.
+     * \return The trailer's size.
+     */
+    uint32_t trailer_size() const;
+
+    /**
+     *  \brief Getter for the priority field.
+     *  \return The stored priority field value.
+     */
+    small_uint<3> priority() const {
+        return _header.priority;
+    }
+
+    /**
+     *  \brief Getter for the cfi field.
+     *  \return The stored cfi field value.
+     */
+    small_uint<1> cfi() const {
+        return _header.cfi;
+    }
+
+    /**
+     *  \brief Getter for the id field.
+     *  \return The stored id field value.
+     */
+    small_uint<12> id() const {
+        return _header.idL | (_header.idH << 8);
+    }
+
+    /**
+     *  \brief Getter for the payload type field.
+     *  \return The stored type field value.
+     */
+    uint16_t payload_type() const {
+        return Endian::be_to_host(_header.type);
+    }
+
+    /**
+     * \brief Getter for the PDU's type.
+     * \sa PDU::pdu_type
+     */
+    PDUType pdu_type() const { return pdu_flag; }
+    
+    /**
+     * \sa PDU::clone
+     */
+    Dot1Q *clone() const {
+        return new Dot1Q(*this);
+    }
+
+    // Setters
+
+    /**
+     *  \brief Setter for the priority field.
+     *  \param new_priority The new priority field value.
+     */
+    void priority(small_uint<3> new_priority);
+
+    /**
+     *  \brief Setter for the cfi field.
+     *  \param new_cfi The new cfi field value.
+     */
+    void cfi(small_uint<1> new_cfi);
+
+    /**
+     *  \brief Setter for the id field.
+     *  \param new_id The new id field value.
+     */
+    void id(small_uint<12> new_id);
+
+    /**
+     *  \brief Setter for the payload type field.
+     *  \param new_type The new type field value.
+     */
+    void payload_type(uint16_t new_type);
+private:
+    void write_serialization(uint8_t *buffer, uint32_t total_sz, const PDU *parent);
+
+    struct dot1q_hdr {
+        #if TINS_IS_BIG_ENDIAN
+            uint16_t priority:3,
+                    cfi:1
+                    id:12;
+            uint16_t type;
+        #else
+            uint16_t idH:4,
+                    cfi:1,
+                    priority:3,
+                    idL:8;
+            uint16_t type;
+        #endif
+    };
+    
+    dot1q_hdr _header;
+};
+}
+
+#endif // TINS_DOT1Q_H

include/pdu.h

@@ -105,7 +105,8 @@ namespace Tins {
             IPv6,
             ICMPv6,
             SLL,
-            DHCPv6
+            DHCPv6,
+            DOT1Q
         };
 
         /** \brief PDU constructor