/*
 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
 * OF SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 * 
 * Author: Adam Dunkels <adam@sics.se>
 *
 */
#ifndef __LWIP_STATS_H__
#define __LWIP_STATS_H__

#include "lwip/opt.h"
#include "arch/cc.h"

#include "lwip/mem.h"
#include "lwip/memp.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__ */