File content as of revision 0:d494b853ce97:

#ifndef NETWORK_H
#define NETWORK_H

#include "mbed.h"
#include "main.h"

#include "ctype.h"

// General networking checksum
inline u16 checksum(void *_mem, unsigned int bytes, void *skip_byte = NULL, unsigned int skip_count = 0, u16 last = 0)
{
  u32 sum = 0;
  u16 *mem = (u16*)_mem;
  unsigned int skip_start = (u16*)skip_byte - mem;
  
  if (last)
    sum = last ^ 0xFFFF;
  
  //main_log.printf("CK:            0x%8X", sum);
  for (register unsigned int i = 0; i < bytes/sizeof(u16); ++i)
  {
    // Skip bytes we don't use (e.g. the checksum itself)
    if (i == skip_start)
      i += skip_count/sizeof(u16);
    
    // Sum them up
    sum += mem[i];
    
    //main_log.printf("CK: + 0x%04X = 0x%8X", mem[i], sum);
  }
    
  // One's complement of the one's complement sum
  sum += sum >> 16;
  sum &= 0xFFFF;
  sum ^= 0xFFFF;
  
  //main_log.printf("CK:          ~ 0x%8X", sum);
  
  return (u16)(sum);
}

// Generic u16 endian swapping
inline void fix_endian_u16(u16 *p)
{
  char *bytes = (char*)p;
  bytes[0] ^= bytes[1];
  bytes[1] ^= bytes[0];
  bytes[0] ^= bytes[1];
}

// Generic u32 endian swapping
inline void fix_endian_u32(u32 *p)
{
  char *bytes = (char*)p;
  // Swap outer bytes
  bytes[0] ^= bytes[3];
  bytes[3] ^= bytes[0];
  bytes[0] ^= bytes[3];
  // Swap inner bytes
  bytes[1] ^= bytes[2];
  bytes[2] ^= bytes[1];
  bytes[1] ^= bytes[2];
}

/* Printing character */
#define PCHAR(x) (isprint(x)?(x):'.')

/* Hex dump a word-aligned number of bytes (may misbehave if length is not a multiple of 32 bits */
inline void hex_dump(void *base, unsigned int length)
{
  char line[/*indent*/ 2 + /*0x*/ 2 + /*addr*/ 8 + /* : */ 3 + /*4xXXXX */ 4*5 + /*: */ 2 + /*8x.*/ 8 + /*\0*/ 1];
  for (char *p = (char*)base; p - (char*)base < length; p += 8)
  {
    sprintf(line, "  0x%08X : %02X%02X %02X%02X %02X%02X %02X%02X : %c%c%c%c%c%c%c%c", p,
                  p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
                  PCHAR(p[0]), PCHAR(p[1]), PCHAR(p[2]), PCHAR(p[3]), PCHAR(p[4]), PCHAR(p[5]), PCHAR(p[6]), PCHAR(p[7]));
    main_log.printf(line);
  }
}

// Ethernet
#include "ethernet.h"

// ARP and IP
#include "arp.h"
#include "ip.h"

// TCP, UDP, and ICMP
#include "tcp.h"
#include "udp.h"
#include "icmp.h"

#endif // NETWORK_H