lwdef.h

这是基于TI公司的DSP TMS320DM642而开发的TCP/UDP协议

#ifndef __LWIP_DEF_H__
#define __LWIP_DEF_H__

#include"csl.h"

#define    TCP_WND          2048
#define    TCP_MSS          128             /* A *very* conservative default. */
#define    TCP_SYNMAXRTX    6
#define    TCP_MAXRTX       12

#define LWIP_MIN(x , y)  (x) < (y) ? (x) : (y)

/* TCP sender buffer space (bytes). */
#ifndef TCP_SND_BUF
#define TCP_SND_BUF                     256
#endif

/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */

#ifndef PBUF_POOL_SIZE
#define PBUF_POOL_SIZE                  16
#endif

/* MEM_SIZE: the size of the heap memory. If the application will send
a lot of data that needs to be copied, this should be set high. */
#ifndef MEM_SIZE
#define MEM_SIZE                        16000
#endif

/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
   lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
   byte alignment -> define MEM_ALIGNMENT to 2. */

#ifndef MEM_ALIGNMENT
#define MEM_ALIGNMENT                   4
#endif

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */

#ifndef PBUF_POOL_BUFSIZE
#define PBUF_POOL_BUFSIZE               128
#endif

/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
   link level header. */

#ifndef PBUF_LINK_HLEN
#define PBUF_LINK_HLEN                  0
#endif

/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
   sends a lot of data out of ROM (or other static memory), this
   should be set high. */
#ifndef MEMP_NUM_PBUF
#define MEMP_NUM_PBUF                   16
#endif

/* TCP sender buffer space (pbufs). This must be at least = 2 *
   TCP_SND_BUF/TCP_MSS for things to work. */
#ifndef TCP_SND_QUEUELEN
#define TCP_SND_QUEUELEN                4 * TCP_SND_BUF/TCP_MSS
#endif

#define    u8_t     Uint8
#define    u16_t    Uint16
#define    u32_t    Uint32 
#define    s8_t     Int8
#define    s16_t    Int16
#define    s32_t    Int32
#define    NULL     0

#define    mem_ptr_t  Uint32
#endif