1.1 --- a/src/node/ipv4-address.cc	Mon Aug 17 18:58:54 2009 -0700
     1.2 +++ b/src/node/ipv4-address.cc	Sat Aug 22 14:58:27 2009 -0700
     1.3 @@ -133,6 +133,20 @@
     1.4    return ones;
     1.5  }
     1.6  
     1.7 +uint16_t
     1.8 +Ipv4Mask::GetPrefixLength (void) const
     1.9 +{
    1.10 +  uint16_t tmp = 0;
    1.11 +  uint32_t mask = m_mask;
    1.12 +  while (mask != 0 ) 
    1.13 +  {
    1.14 +    mask = mask << 1;
    1.15 +    tmp++;
    1.16 +  }
    1.17 +  return tmp; 
    1.18 +}
    1.19 +
    1.20 +
    1.21  Ipv4Address::Ipv4Address ()
    1.22    : m_address (0x66666666)
    1.23  {}

     2.1 --- a/src/node/ipv4-address.h	Mon Aug 17 18:58:54 2009 -0700
     2.2 +++ b/src/node/ipv4-address.h	Sat Aug 22 14:58:27 2009 -0700
     2.3 @@ -238,6 +238,10 @@
     2.4     */
     2.5    void Print (std::ostream &os) const;
     2.6    /**
     2.7 +   * \return the prefix length of mask (the yy in x.x.x.x/yy notation)
     2.8 +   */
     2.9 +  uint16_t GetPrefixLength (void) const;
    2.10 +  /**
    2.11     * \return the 255.0.0.0 mask corresponding to a typical loopback address
    2.12     */
    2.13    static Ipv4Mask GetLoopback (void);