#ifndef __LWIP_STATS_H__
#define __LWIP_STATS_H__


#include "mem.h"
#include "tcpmem.h"
#include "lwdef.h"

//#if LWIP_STATS

struct stats_proto {
  u16_t xmit;    /* Transmitted packets. */
  u16_t rexmit;  /* Retransmitted packets. */
  u16_t recv;    /* Received packets. */
  u16_t fw;      /* Forwarded packets. */
  u16_t drop;    /* Dropped packets. */
  u16_t chkerr;  /* Checksum error. */
  u16_t lenerr;  /* Invalid length error. */
  u16_t memerr;  /* Out of memory error. */
  u16_t rterr;   /* Routing error. */
  u16_t proterr; /* Protocol error. */
  u16_t opterr;  /* Error in options. */
  u16_t err;     /* Misc error. */
  u16_t cachehit;
};

struct stats_mem {
  mem_size_t avail;
  mem_size_t used;
  mem_size_t max;  
  mem_size_t err;
};

struct stats_pbuf {
  u16_t avail;
  u16_t used;
  u16_t max;  
  u16_t err;

  u16_t alloc_locked;
  u16_t refresh_locked;
};

struct stats_syselem {
  u16_t used;
  u16_t max;
  u16_t err;
};

struct stats_sys {
  struct stats_syselem sem;
  struct stats_syselem mbox;
};

struct stats_ {
  struct stats_proto link;
  struct stats_proto ip_frag;
  struct stats_proto ip;
  struct stats_proto icmp;
  struct stats_proto udp;
  struct stats_proto tcp;
  struct stats_pbuf pbuf;
  struct stats_mem mem;
  struct stats_mem memp[MEMP_MAX];
  struct stats_sys sys;
};

extern struct stats_ lwip_stats;


void stats_init(void);

#define STATS_INC(x) ++lwip_stats.x
//#else
//#define stats_init()
//#define STATS_INC(x)
//#endif /* LWIP_STATS */

#if TCP_STATS
#define TCP_STATS_INC(x) STATS_INC(x)
#else
#define TCP_STATS_INC(x)
#endif

#if UDP_STATS
#define UDP_STATS_INC(x) STATS_INC(x)
#else
#define UDP_STATS_INC(x)
#endif

#if ICMP_STATS
#define ICMP_STATS_INC(x) STATS_INC(x)
#else
#define ICMP_STATS_INC(x)
#endif

#if IP_STATS
#define IP_STATS_INC(x) STATS_INC(x)
#else
#define IP_STATS_INC(x)
#endif

#if IPFRAG_STATS
#define IPFRAG_STATS_INC(x) STATS_INC(x)
#else
#define IPFRAG_STATS_INC(x)
#endif

#if LINK_STATS
#define LINK_STATS_INC(x) STATS_INC(x)
#else
#define LINK_STATS_INC(x)
#endif

/* Display of statistics */
#if LWIP_STATS_DISPLAY
void stats_display(void);
#else
#define stats_display()
#endif

#endif /* __LWIP_STATS_H__ */