[3546] hw_type in HWAddr class is now 16 bits long.

src/lib/dhcp/hwaddr.cc

@@ -31,14 +31,14 @@ HWAddr::HWAddr()
     :htype_(HTYPE_ETHER) {
 }
 
-HWAddr::HWAddr(const uint8_t* hwaddr, size_t len, uint8_t htype)
+HWAddr::HWAddr(const uint8_t* hwaddr, size_t len, uint16_t htype)
     :hwaddr_(hwaddr, hwaddr + len), htype_(htype) {
     if (len > MAX_HWADDR_LEN) {
         isc_throw(InvalidParameter, "hwaddr length exceeds MAX_HWADDR_LEN");
     }
 }
 
-HWAddr::HWAddr(const std::vector<uint8_t>& hwaddr, uint8_t htype)
+HWAddr::HWAddr(const std::vector<uint8_t>& hwaddr, uint16_t htype)
     :hwaddr_(hwaddr), htype_(htype) {
     if (hwaddr.size() > MAX_HWADDR_LEN) {
         isc_throw(InvalidParameter,
@@ -49,7 +49,7 @@ HWAddr::HWAddr(const std::vector<uint8_t>& hwaddr, uint8_t htype)
 std::string HWAddr::toText(bool include_htype) const {
     std::stringstream tmp;
     if (include_htype) {
-        tmp << "hwtype=" << static_cast<int>(htype_) << " ";
+        tmp << "hwtype=" << static_cast<unsigned int>(htype_) << " ";
     }
     tmp << std::hex;
     bool delim = false;
@@ -65,7 +65,7 @@ std::string HWAddr::toText(bool include_htype) const {
 }
 
 HWAddr
-HWAddr::fromText(const std::string& text, const uint8_t htype) {
+HWAddr::fromText(const std::string& text, const uint16_t htype) {
     /// @todo optimize stream operations here.
     std::vector<std::string> split_text;
     boost::split(split_text, text, boost::is_any_of(":"),

src/lib/dhcp/hwaddr.h

@@ -41,18 +41,22 @@ public:
     /// @param hwaddr pointer to hardware address
     /// @param len length of the address pointed by hwaddr
     /// @param htype hardware type
-    HWAddr(const uint8_t* hwaddr, size_t len, uint8_t htype);
+    HWAddr(const uint8_t* hwaddr, size_t len, uint16_t htype);
 
     /// @brief constructor, based on C++ vector<uint8_t>
     /// @param hwaddr const reference to hardware address
     /// @param htype hardware type
-    HWAddr(const std::vector<uint8_t>& hwaddr, uint8_t htype);
+    HWAddr(const std::vector<uint8_t>& hwaddr, uint16_t htype);
 
     // Vector that keeps the actual hardware address
     std::vector<uint8_t> hwaddr_;
 
-    // Hardware type
+    /// Hardware type
-    uint8_t htype_;
+    ///
+    /// @note It used to be uint8_t as used in DHCPv4. However, since we're
+    /// expanding MAC addresses support to DHCPv6 that uses hw_type as
+    /// 16 bits, we need to be able to store that wider format.
+    uint16_t htype_;
 
     /// @brief Returns textual representation of a hardware address
     /// (e.g. 00:01:02:03:04:05)
@@ -83,7 +87,7 @@ public:
     ///
     /// @return Instance of the HW address created from text.
     static HWAddr fromText(const std::string& text,
-                           const uint8_t htype = HTYPE_ETHER);
+                           const uint16_t htype = HTYPE_ETHER);
 
     /// @brief Compares two hardware addresses for equality
     bool operator==(const HWAddr& other) const;

src/lib/dhcp/tests/hwaddr_unittest.cc

@@ -163,4 +163,16 @@ TEST(HWAddrTest, fromText) {
 
 }
 
+// Checks that 16 bits values can be stored in HWaddr
+TEST(HWAddrTest, 16bits) {
+
+    uint8_t data[] = {0, 1, 2, 3, 4, 5};
+    uint16_t htype = 257;
+    HWAddrPtr hw(new HWAddr(data, sizeof(data), htype));
+
+    EXPECT_EQ("hwtype=257 00:01:02:03:04:05", hw->toText());
+
+
+}
+
 } // end of anonymous namespace