ip_addr.h

这是基于TI公司的DSP TMS320DM642而开发的TCP/UDP协议

#ifndef __LWIP_IP_ADDR_H__
#define __LWIP_IP_ADDR_H__

#include "lwdef.h"

struct ip_addr
{
  u32_t addr;
};

struct ip_addr2 
{
	  u16_t addrw[2];
};


/* For compatibility with BSD code */
//struct in_addr {
//  u32_t s_addr;
//};

struct netif;

extern const struct ip_addr ip_addr_any;
extern const struct ip_addr ip_addr_broadcast;

/** IP_ADDR_ can be used as a fixed IP address
 *  for the wildcard and the broadcast address
 */
#define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any)
#define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast)

#define INADDR_NONE    ((u32_t) 0xffffffff)  /* 255.255.255.255 */
#define INADDR_LOOPBACK    ((u32_t) 0x7f000001)  /* 127.0.0.1 */

/* Definitions of the bits in an Internet address integer.

   On subnets, host and network parts are found according to
   the subnet mask, not these masks.  */

#define  IN_CLASSA(a)    ((((u32_t)(a)) & 0x80000000) == 0)
#define  IN_CLASSA_NET    0xff000000
#define  IN_CLASSA_NSHIFT  24
#define  IN_CLASSA_HOST    (0xffffffff & ~IN_CLASSA_NET)
#define  IN_CLASSA_MAX    128

#define  IN_CLASSB(a)    ((((u32_t)(a)) & 0xc0000000) == 0x80000000)
#define  IN_CLASSB_NET    0xffff0000
#define  IN_CLASSB_NSHIFT  16
#define  IN_CLASSB_HOST    (0xffffffff & ~IN_CLASSB_NET)
#define  IN_CLASSB_MAX    65536

#define  IN_CLASSC(a)    ((((u32_t)(a)) & 0xe0000000) == 0xc0000000)
#define  IN_CLASSC_NET    0xffffff00
#define  IN_CLASSC_NSHIFT  8
#define  IN_CLASSC_HOST    (0xffffffff & ~IN_CLASSC_NET)

#define IN_CLASSD(a)        (((u32_t)(a) & 0xf0000000) == 0xe0000000)
#define IN_CLASSD_NET       0xf0000000  /* These ones aren't really */
#define IN_CLASSD_NSHIFT    28      /* net and host fields, but */
#define IN_CLASSD_HOST      0x0fffffff  /* routing needn't know.    */
#define IN_MULTICAST(a)     IN_CLASSD(a)

#define IN_EXPERIMENTAL(a)  (((u32_t)(a) & 0xf0000000) == 0xf0000000)
#define IN_BADCLASS(a)      (((u32_t)(a) & 0xf0000000) == 0xf0000000)

#define IN_LOOPBACKNET      127         /* official! */


#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((u32_t)(a & 0xff) << 24) | ((u32_t)(b & 0xff) << 16) | \
                                                         ((u32_t)(c & 0xff) << 8) | (u32_t)(d & 0xff))

#define ip_addr_set(dest, src) (dest)->addr = \
                               ((src) == NULL? 0:\
                               (src)->addr)
#define ip_addr_maskcmp(addr1, addr2, mask) (((addr1)->addr & \
                                              (mask)->addr) == \
                                             ((addr2)->addr & \
                                              (mask)->addr))
#define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)

#define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0)

u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *);

#define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))


#define ip_addr_debug_print(debug, ipaddr) LWIP_DEBUGF(debug, ("%u.%u.%u.%u", \
        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff:0, \
        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff:0, \
        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff:0, \
        ipaddr?(unsigned int)ntohl((ipaddr)->addr) & 0xff:0U))

/* cast to unsigned int, as it is used as argument to printf functions
 * which expect integer arguments */
#define ip4_addr1(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff)
#define ip4_addr2(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff)
#define ip4_addr3(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff)
#define ip4_addr4(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr)) & 0xff)
#endif /* __LWIP_IP_ADDR_H__ */