etharp.h 文件参考

#include "lwip/arch.h"
#include "lwip/prot/ethernet.h"

etharp.h 的引用(Include)关系图:

浏览源代码.

结构体
struct	etharp_hdr

宏定义
#define	ETHARP_HWADDR_LEN   ETH_HWADDR_LEN
#define	IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T(dest, src)   SMEMCPY(dest, src, sizeof(ip4_addr_t))
#define	IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(dest, src)   SMEMCPY(dest, src, sizeof(ip4_addr_t))
#define	SIZEOF_ETHARP_HDR   28

枚举
enum	etharp_opcode { ARP_REQUEST = 1 , ARP_REPLY = 2 }

常量
PACK_STRUCT_BEGIN struct ip4_addr_wordaligned	PACK_STRUCT_STRUCT

详细描述

ARP protocol definitions

宏定义说明

IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T

#define IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T	(		dest,
			src
	)		SMEMCPY(dest, src, sizeof(ip4_addr_t))

MEMCPY-like copying of IP addresses where addresses are known to be 16-bit-aligned if the port is correctly configured (so a port could define this to copying 2 u16_t's) - no NULL-pointer-checking needed.

IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T

#define IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T	(		dest,
			src
	)		SMEMCPY(dest, src, sizeof(ip4_addr_t))

MEMCPY-like copying of IP addresses where addresses are known to be 16-bit-aligned if the port is correctly configured (so a port could define this to copying 2 u16_t's) - no NULL-pointer-checking needed.