#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__

#include "stdbool.h"

/**
 * 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

#define LWIP_NETIF_HOSTNAME 1
#define ETHARP_TRUST_IP_MAC 0
#define IP_REASSEMBLY 0
#define IP_FRAG 0
#define ARP_QUEUEING 0
#define LWIP_NETIF_API 1

#define LWIP_MDNS_RESPONDER 1
#define LWIP_IGMP 1

#define LWIP_NUM_NETIF_CLIENT_DATA 1

#define LWIP_ALTCP 1
#define LWIP_ALTCP_TLS 1
/**
 * NO_SYS==1: Provides VERY minimal functionality. Otherwise,
 * use lwIP facilities.
 */
#define NO_SYS 0

#define LWIP_TIMEVAL_PRIVATE 0

#define LWIP_HAVE_LOOPIF 1

/**
 * LWIP_TCPIP_CORE_LOCKING_INPUT: when LWIP_TCPIP_CORE_LOCKING is enabled,
 * this lets tcpip_input() grab the mutex for input packets as well,
 * instead of allocating a message and passing it to tcpip_thread.
 *
 * ATTENTION: this does not work when tcpip_input() is called from
 * interrupt context!
 */
#define LWIP_TCPIP_CORE_LOCKING_INPUT 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 (12 * 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 26

/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
   per active UDP "connection". */
#define MEMP_NUM_UDP_PCB 8

/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
   connections. */
#define MEMP_NUM_TCP_PCB 10
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
   connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 5
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
   segments. */
#define MEMP_NUM_TCP_SEG 32

/* NUM of sys_timeout pool*/
#define MEMP_NUM_SYS_TIMEOUT (LWIP_NUM_SYS_TIMEOUT_INTERNAL + 8 + 3)

#define MEMP_NUM_NETCONN (MEMP_NUM_TCP_PCB + MEMP_NUM_UDP_PCB + MEMP_NUM_TCP_PCB_LISTEN)

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

/* ---------- TCP options ---------- */
#define LWIP_TCP 1
#define IP_DEFAULT_TTL 64

/* Controls if TCP should queue segments that arrive out of
   order. Define to 0 if your device is low on memory. */
#define TCP_QUEUE_OOSEQ 1

/* TCP Maximum segment size. */
#define TCP_MSS (1500 - 40) /* TCP_MSS = (Ethernet MTU - IP header size - TCP header size) */

/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF (3 * TCP_MSS)

/*  TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least
  as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. */

#define TCP_SND_QUEUELEN ((2 * (TCP_SND_BUF) + (TCP_MSS - 1)) / (TCP_MSS))

#define MEMP_NUM_TCPIP_MSG_INPKT (32)

/**
 * TCP_SNDQUEUELOWAT: TCP writable bufs (pbuf count). This must be less
 * than TCP_SND_QUEUELEN. If the number of pbufs queued on a pcb drops below
 * this number, select returns writable (combined with TCP_SNDLOWAT).
 */
#define TCP_SNDQUEUELOWAT ((TCP_SND_QUEUELEN) / 2)

/* TCP receive window. */
#define TCP_WND (3 * TCP_MSS)

/**
 * TCP_WND_UPDATE_THRESHOLD: difference in window to trigger an
 * explicit window update
 */
#define TCP_WND_UPDATE_THRESHOLD LWIP_MIN((TCP_WND / 2), (TCP_MSS * 6))

/**
 * By default, TCP socket/netconn close waits 20 seconds max to send the FIN
 */
#define LWIP_TCP_CLOSE_TIMEOUT_MS_DEFAULT 5000

/**
 * LWIP_SO_SNDTIMEO==1: Enable send timeout for sockets/netconns and
 * SO_SNDTIMEO processing.
 */
#define LWIP_SO_SNDTIMEO 1
/**
 * LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and
 * SO_RCVTIMEO processing.
 */
#define LWIP_SO_RCVTIMEO 1

/* ---------- 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

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

/* ---------- Statistics options ---------- */
#define LWIP_STATS 1
#define LWIP_PROVIDE_ERRNO 1

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

#define LWIP_CHECKSUM_ON_COPY 1
#define LWIP_NETIF_TX_SINGLE_PBUF 1

#ifdef CHECKSUM_BY_HARDWARE
/* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/
#define CHECKSUM_GEN_IP 0
/* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/
#define CHECKSUM_GEN_UDP 0
/* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/
#define CHECKSUM_GEN_TCP 0
/* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/
#define CHECKSUM_CHECK_IP 0
/* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/
#define CHECKSUM_CHECK_UDP 0
/* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/
#define CHECKSUM_CHECK_TCP 0
/* CHECKSUM_CHECK_ICMP==0: Check checksums by hardware for incoming ICMP packets.*/
#define CHECKSUM_GEN_ICMP 0
#else
/* CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.*/
#define CHECKSUM_GEN_IP 1
/* CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.*/
#define CHECKSUM_GEN_UDP 1
/* CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.*/
#define CHECKSUM_GEN_TCP 1
/* CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.*/
#define CHECKSUM_CHECK_IP 1
/* CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.*/
#define CHECKSUM_CHECK_UDP 1
/* CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.*/
#define CHECKSUM_CHECK_TCP 1
/* CHECKSUM_CHECK_ICMP==1: Check checksums by hardware for incoming ICMP packets.*/
#define CHECKSUM_GEN_ICMP 1
#endif

/*
   ----------------------------------------------
   ---------- Sequential layer options ----------
   ----------------------------------------------
*/
#define LWIP_CHKSUM_ALGORITHM 3

/**
 * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
 */
#define LWIP_NETCONN 1

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

/*
   -----------------------------------
   ---------- DEBUG options ----------
   -----------------------------------
*/

// #define LWIP_DEBUG                      0

/*
   ---------------------------------
   ---------- OS options ----------
   ---------------------------------
*/

#define TCPIP_THREAD_NAME "TCP/IP"
#define TCPIP_THREAD_STACKSIZE 1536
#define TCPIP_MBOX_SIZE 50
#define DEFAULT_UDP_RECVMBOX_SIZE 50
#define DEFAULT_TCP_RECVMBOX_SIZE 50
#define DEFAULT_ACCEPTMBOX_SIZE 50
#define DEFAULT_THREAD_STACKSIZE 500
#define TCPIP_THREAD_PRIO (configMAX_PRIORITIES - 2)

#define LWIP_COMPAT_MUTEX 0
#define LWIP_TCPIP_CORE_LOCKING 1
#define LWIP_NETCONN_SEM_PER_THREAD 0
#define LWIP_SOCKET_SET_ERRNO 1
#define SO_REUSE 1
#define LWIP_TCP_KEEPALIVE 1

/*Enable Status callback and link callback*/
#define LWIP_NETIF_STATUS_CALLBACK 1
#define LWIP_NETIF_LINK_CALLBACK 1

/*Enable dns*/
#define LWIP_DNS_SERVER 0
#define LWIP_DNS 1
#define LWIP_DNS_SECURE 0

#define MEMP_MEM_MALLOC 0
#define LWIP_SUPPORT_CUSTOM_PBUF 1

#define PBUF_LINK_ENCAPSULATION_HLEN 48u

#define LWIP_RAW 1

#define LWIP_IPV4 1
#define LWIP_IPV6_DHCP6 1
#define LWIP_AUTOIP 1
#define LWIP_IPV6_MLD 1
#define LWIP_ND6_RDNSS_MAX_DNS_SERVERS 0
#define LWIP_HOOK_FILENAME "bl_lwip_hooks.h"

#define LWIP_NETIF_EXT_STATUS_CALLBACK 1

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE LWIP_MEM_ALIGN_SIZE(TCP_MSS + 40 + PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN)

#define LWIP_PBUF_FROM_CUSTOM_POOLS (0)

/*
   ---------------------------------
   ---------- MISC. options ----------
   ---------------------------------
*/

#if defined(__cplusplus)
extern "C" int bl_rand(void);
extern "C" int * __errno(void);
#else
extern int bl_rand(void);
extern int * __errno(void);
#endif

#define errno (*__errno())

/**
 * LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS==1: randomize the local port for the first
 * local TCP/UDP pcb (default==0). This can prevent creating predictable port
 * numbers after booting a device.
 */

#define LWIP_RANDOMIZE_INITIAL_LOCAL_PORTS 1
#define LWIP_RAND() ((u32_t) bl_rand())

#endif /* __LWIPOPTS_H__ */