/**
  ******************************************************************************
  * @file    lwipopts.h
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    31-October-2011
  * @brief   lwIP Options Configuration.
  *          This file is based on Utilities\lwip_v1.3.2\src\include\lwip\opt.h 
  *          and contains the lwIP configuration for the STM32F4x7 demonstration.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */

#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__


#include <stdio.h>

#define LWIP_IPV4                       1
#define LWIP_IPV6                       0

#define MTU 1500

#define ICMP_TTL 64

#define LWIP_TIMERS                     1


#if 0
#define SYS_DEBUG LWIP_DBG_ON
#define DHCP_DEBUG LWIP_DBG_ON
#define ICMP_DEBUG LWIP_DBG_ON
#define UDP_DEBUG LWIP_DBG_ON
#define IP_DEBUG LWIP_DBG_ON
#define ETHARP_DEBUG LWIP_DBG_ON
#define HTTPD_DEBUG LWIP_DBG_ON
#define TIMERS_DEBUG                    LWIP_DBG_ON
#define LWIP_DBG_TYPES_ON (LWIP_DBG_ON|LWIP_DBG_TRACE|LWIP_DBG_STATE|LWIP_DBG_FRESH|LWIP_DBG_HALT)
#define LWIP_DEBUG 1
#define LWIP_PLATFORM_DIAG(a) printf a
#else
#define LWIP_DEBUG 0
#endif


/**
 * SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain
 * critical regions during buffer allocation, deallocation and memory
 * allocation and deallocation.
 */
#define SYS_LIGHTWEIGHT_PROT    1

/**
 * NO_SYS==1: Provides VERY minimal functionality. Otherwise,
 * use lwIP facilities.
 */
#define NO_SYS                  1

/* ---------- Memory options ---------- */
/* 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. */
#define MEM_ALIGNMENT           4

/* 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. */
#define MEM_SIZE                (10*1024)

/* 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. */
#define MEMP_NUM_PBUF           100
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
   per active UDP "connection". */
#define MEMP_NUM_UDP_PCB        6
/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
   connections. */

#define PBUF_POOL_FREE_OOSEQ	0

#define MEMP_NUM_TCP_PCB        10
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
   connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 6
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
   segments. */
#define MEMP_NUM_TCP_SEG        12
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
   timeouts. */
#define MEMP_NUM_SYS_TIMEOUT    6


#define PBUF_POOL_FREE_OOSEQ	0

/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE          20

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE       ((MTU)+8)


/* ---------- TCP options ---------- */
#define LWIP_TCP                1
#define TCP_TTL                 255

#define TCP_WND                         (4 * TCP_MSS)
#define TCP_MAXRTX                      12
#define TCP_SYNMAXRTX                   6
#define TCP_QUEUE_OOSEQ                 LWIP_TCP
#define LWIP_TCP_SACK_OUT               0
#define LWIP_TCP_MAX_SACK_NUM           4
#define TCP_MSS                         536
#define TCP_CALCULATE_EFF_SEND_MSS      1
#define TCP_SND_BUF                     (2 * TCP_MSS)
#define TCP_SND_QUEUELEN                ((4 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
#define TCP_SNDLOWAT                    LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1)
#define TCP_SNDQUEUELOWAT               LWIP_MAX(((TCP_SND_QUEUELEN)/2), 5)
#define TCP_OOSEQ_BYTES_LIMIT(pcb)      TCP_OOSEQ_MAX_BYTES
#define TCP_OOSEQ_MAX_PBUFS             0
#define TCP_OOSEQ_PBUFS_LIMIT(pcb)      TCP_OOSEQ_MAX_PBUFS
#define TCP_LISTEN_BACKLOG              0






/* ---------- ICMP options ---------- */
#define LWIP_ICMP                       1


/* ---------- DHCP options ---------- */
/* Define LWIP_DHCP to 1 if you want DHCP configuration of
   interfaces. DHCP is not implemented in lwIP 0.5.1, however, so
   turning this on does currently not work. */
#define LWIP_DHCP               1
#define LWIP_AUTOIP             0
#define LWIP_DHCP_BOOTP_FILE	0


/* ---------- UDP options ---------- */
#define LWIP_UDP                1
#define UDP_TTL                 255


/* ---------- Statistics options ---------- */
#define LWIP_STATS 0
#undef LWIP_PROVIDE_ERRNO
#define ETHARP_STATS		0

#define IP_FRAG	1
#define IP_FRAG_USES_STATIC_BUF         0


/*
   --------------------------------------
   ---------- Checksum options ----------
   --------------------------------------
*/

/* 
The STM32F4x7 allows computing and verifying the IP, UDP, TCP and ICMP checksums by hardware:
 - To use this feature let the following define uncommented.
 - To disable it and process by CPU comment the  the checksum.
*/

  /* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/
#define CHECKSUM_GEN_IP                 1
  /* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/
#define CHECKSUM_GEN_UDP                1
  /* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/
#define CHECKSUM_GEN_TCP                1 
  /* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/
#define CHECKSUM_CHECK_IP               1
  /* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/
#define CHECKSUM_CHECK_UDP              1
  /* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/
#define CHECKSUM_CHECK_TCP              1


/*
   ----------------------------------------------
   ---------- Sequential layer options ----------
   ----------------------------------------------
*/
/**
 * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
 */
#define LWIP_NETCONN                    0

/*
   ------------------------------------
   ---------- Socket options ----------
   ------------------------------------
*/
/**
 * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
 */
#define LWIP_SOCKET                     0


#define LWIP_HTTPD_CUSTOM_FILES 	1
#define LWIP_HTTPD_FILE_STATE         0



/*
   ----------------------------------------
   ---------- Lwip Debug options ----------
   ----------------------------------------
*/
//#define LWIP_DEBUG                      1

#endif /* __LWIPOPTS_H__ */

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/