opt.h

lWIP是TCPIP的协议的源代码。采用的是最新LWIP0.6.4版本。为了得到最佳性能

/* TCP writable space (bytes). This must be less than or equal
   to TCP_SND_BUF. It is the amount of space which must be
   available in the tcp snd_buf for select to return writable */
#ifndef TCP_SNDLOWAT
#define TCP_SNDLOWAT                    TCP_SND_BUF/2
#endif




#ifndef LWIP_EVENT_API
#define LWIP_EVENT_API                  0
#define LWIP_CALLBACK_API               1
#else 
#define LWIP_EVENT_API                  1
#define LWIP_CALLBACK_API               0
#endif 

#ifndef LWIP_COMPAT_SOCKETS
#define LWIP_COMPAT_SOCKETS             1
#endif


#ifndef TCPIP_THREAD_PRIO
#define TCPIP_THREAD_PRIO               10
#endif

#ifndef SLIPIF_THREAD_PRIO
#define SLIPIF_THREAD_PRIO              1
#endif

#ifndef PPP_THREAD_PRIO
#define PPP_THREAD_PRIO                 1
#endif

#ifndef DEFAULT_THREAD_PRIO
#define DEFAULT_THREAD_PRIO             1
#endif

/* ---------- Statistics options ---------- */
#ifndef LWIP_STATS
#define LWIP_STATS                      1
#endif

#if LWIP_STATS

#define LINK_STATS
#define IP_STATS
#define ICMP_STATS
#define UDP_STATS
#define TCP_STATS
#define MEM_STATS
#define MEMP_STATS
#define PBUF_STATS
#define SYS_STATS

#endif /* LWIP_STATS */

/* ---------- PPP options ---------- */

#ifndef PPP_SUPPORT
#define PPP_SUPPORT                     0      /* Set for PPP */
#endif

#if PPP_SUPPORT 

#define NUM_PPP                         1      /* Max PPP sessions. */



#ifndef PAP_SUPPORT
#define PAP_SUPPORT                     0      /* Set for PAP. */
#endif

#ifndef CHAP_SUPPORT
#define CHAP_SUPPORT                    0      /* Set for CHAP. */
#endif

#define MSCHAP_SUPPORT                  0      /* Set for MSCHAP (NOT FUNCTIONAL!) */
#define CBCP_SUPPORT                    0      /* Set for CBCP (NOT FUNCTIONAL!) */
#define CCP_SUPPORT                     0      /* Set for CCP (NOT FUNCTIONAL!) */

#ifndef VJ_SUPPORT
#define VJ_SUPPORT                      0      /* Set for VJ header compression. */
#endif

#ifndef MD5_SUPPORT
#define MD5_SUPPORT                     0      /* Set for MD5 (see also CHAP) */
#endif


/*
 * Timeouts.
 */
#define FSM_DEFTIMEOUT                  6       /* Timeout time in seconds */
#define FSM_DEFMAXTERMREQS              2       /* Maximum Terminate-Request transmissions */
#define FSM_DEFMAXCONFREQS              10      /* Maximum Configure-Request transmissions */
#define FSM_DEFMAXNAKLOOPS              5       /* Maximum number of nak loops */

#define UPAP_DEFTIMEOUT                 6       /* Timeout (seconds) for retransmitting req */
#define UPAP_DEFREQTIME                 30      /* Time to wait for auth-req from peer */

#define CHAP_DEFTIMEOUT                 6       /* Timeout time in seconds */
#define CHAP_DEFTRANSMITS               10      /* max # times to send challenge */


/* Interval in seconds between keepalive echo requests, 0 to disable. */
#if 1
#define LCP_ECHOINTERVAL                0
#else
#define LCP_ECHOINTERVAL                10
#endif

/* Number of unanswered echo requests before failure. */
#define LCP_MAXECHOFAILS                3

/* Max Xmit idle time (in jiffies) before resend flag char. */
#define PPP_MAXIDLEFLAG                 100

/*
 * Packet sizes
 *
 * Note - lcp shouldn't be allowed to negotiate stuff outside these
 *    limits.  See lcp.h in the pppd directory.
 * (XXX - these constants should simply be shared by lcp.c instead
 *    of living in lcp.h)
 */
#define PPP_MTU                         1500     /* Default MTU (size of Info field) */
#if 0
#define PPP_MAXMTU  65535 - (PPP_HDRLEN + PPP_FCSLEN)
#else
#define PPP_MAXMTU                      1500 /* Largest MTU we allow */
#endif
#define PPP_MINMTU                      64
#define PPP_MRU                         1500     /* default MRU = max length of info field */
#define PPP_MAXMRU                      1500     /* Largest MRU we allow */
#define PPP_DEFMRU                      296             /* Try for this */
#define PPP_MINMRU                      128             /* No MRUs below this */


#define MAXNAMELEN                      256     /* max length of hostname or name for auth */
#define MAXSECRETLEN                    256     /* max length of password or secret */

#endif /* PPP_SUPPORT */


/* Debugging options all default to off */

#ifndef DBG_TYPES_ON
#define DBG_TYPES_ON                    0
#endif

#ifndef DEMO_DEBUG
#define DEMO_DEBUG                      DBG_OFF
#endif

#ifndef ETHARP_DEBUG
#define ETHARP_DEBUG                    DBG_OFF
#endif

#ifndef NETIF_DEBUG
#define NETIF_DEBUG                     DBG_OFF
#endif

#ifndef PBUF_DEBUG
#define PBUF_DEBUG                      DBG_OFF
#endif

#ifndef API_LIB_DEBUG
#define API_LIB_DEBUG                   DBG_OFF
#endif

#ifndef API_MSG_DEBUG
#define API_MSG_DEBUG                   DBG_OFF
#endif

#ifndef SOCKETS_DEBUG
#define SOCKETS_DEBUG                   DBG_OFF
#endif

#ifndef ICMP_DEBUG
#define ICMP_DEBUG                      DBG_OFF
#endif

#ifndef INET_DEBUG
#define INET_DEBUG                      DBG_OFF
#endif

#ifndef IP_DEBUG
#define IP_DEBUG                        DBG_OFF
#endif

#ifndef IP_REASS_DEBUG
#define IP_REASS_DEBUG                  DBG_OFF
#endif

#ifndef MEM_DEBUG
#define MEM_DEBUG                       DBG_OFF
#endif

#ifndef MEMP_DEBUG
#define MEMP_DEBUG                      DBG_OFF
#endif

#ifndef SYS_DEBUG
#define SYS_DEBUG                       DBG_OFF
#endif

#ifndef TCP_DEBUG
#define TCP_DEBUG                       DBG_OFF
#endif

#ifndef TCP_INPUT_DEBUG
#define TCP_INPUT_DEBUG                 DBG_OFF
#endif

#ifndef TCP_FR_DEBUG
#define TCP_FR_DEBUG                    DBG_OFF
#endif

#ifndef TCP_RTO_DEBUG
#define TCP_RTO_DEBUG                   DBG_OFF
#endif

#ifndef TCP_REXMIT_DEBUG
#define TCP_REXMIT_DEBUG                DBG_OFF
#endif

#ifndef TCP_CWND_DEBUG
#define TCP_CWND_DEBUG                  DBG_OFF
#endif

#ifndef TCP_WND_DEBUG
#define TCP_WND_DEBUG                   DBG_OFF
#endif

#ifndef TCP_OUTPUT_DEBUG
#define TCP_OUTPUT_DEBUG                DBG_OFF
#endif

#ifndef TCP_RST_DEBUG
#define TCP_RST_DEBUG                   DBG_OFF
#endif

#ifndef TCP_QLEN_DEBUG
#define TCP_QLEN_DEBUG                  DBG_OFF
#endif

#ifndef UDP_DEBUG
#define UDP_DEBUG                       DBG_OFF
#endif

#ifndef TCPIP_DEBUG
#define TCPIP_DEBUG                     DBG_OFF
#endif

#ifndef PPP_DEBUG 
#define PPP_DEBUG                       DBG_OFF
#endif

#ifndef SLIP_DEBUG 
#define SLIP_DEBUG                      DBG_OFF
#endif

#ifndef DHCP_DEBUG 
#define DHCP_DEBUG                      DBG_OFF
#endif


#ifndef DBG_MIN_LEVEL
#define DBG_MIN_LEVEL                   DBG_LEVEL_OFF
#endif

#endif /* __LWIP_OPT_H__ */