src/lwip/standalone/lwipopts.h - third_party/openweave-core - Git at Google

 /*
  *
  *    Copyright (c) 2019 Google LLC.
  *    Copyright (c) 2014-2018 Nest Labs, Inc.
  *    All rights reserved.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
  *    You may obtain a copy of the License at
  *
  *        http://www.apache.org/licenses/LICENSE-2.0
  *
  *    Unless required by applicable law or agreed to in writing, software
  *    distributed under the License is distributed on an "AS IS" BASIS,
  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */

 /**
  *    @file
  *      This file describes compile-time constants for configuring LwIP
  *      for use in standalone (desktop) environments.
  *
  */


 #ifndef __LWIPOPTS_H__
 #define __LWIPOPTS_H__

 #include <stdlib.h>

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

 /**
  * MEM_ALIGNMENT: should be set to the alignment of the CPU
  *    4 byte alignment -> #define MEM_ALIGNMENT 4
  *    2 byte alignment -> #define MEM_ALIGNMENT 2
  */
 #define MEM_ALIGNMENT                  (4)

 /**
  * MEM_SIZE: specify bigger memory size to pass LwIP-internal unit tests
  * (only needed when building tests)
  */
 #ifdef NL_WEAVE_WITH_TESTS
 #define MEM_SIZE                       (16000)
 #endif

 /**
  * Use Malloc from LibC - saves code space
  */
 #define MEM_LIBC_MALLOC                (0)

 /**
  * Do not use memory pools to create fixed, statically allocated pools of
  * memory in lieu of the Standard C Library heap and APIs.
  */
 #define MEM_USE_POOLS                  (0)

 /**
  * MEMP_NUM_NETBUF: the number of struct netbufs.
  * (only needed if you use the sequential API, like api_lib.c)
  */
 #define MEMP_NUM_NETBUF                (PBUF_POOL_SIZE)

 /**
  * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
  * (requires the LWIP_TCP option)
  */
 #define MEMP_NUM_TCP_SEG               (TCP_SND_QUEUELEN+1)

 /**
  * LWIP_PBUF_FROM_CUSTOM_POOLS: Enable the use of variable-sized pbuf pools.
  */
 #ifndef LWIP_PBUF_FROM_CUSTOM_POOLS
 #define LWIP_PBUF_FROM_CUSTOM_POOLS         (1)
 #endif // LWIP_PBUF_FROM_CUSTOM_POOLS

 /**
  * PBUF_POOL_BUFSIZE: Payload size of default pbuf buffer.
  *
  * For the Weave standalone LwIP build, this is sized to accommodate the largest
  * possible standard Ethernet frame (Ethernet header + 1500 bytes of payload),
  * plus any additional bytes needed for a link encapsulation header (which is 0
  * in the default case).
  */
 #ifndef PBUF_POOL_BUFSIZE
 #define PBUF_POOL_BUFSIZE              (LWIP_MEM_ALIGN_SIZE(PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + ETHERNET_MTU))
 #endif // PBUF_POOL_BUFSIZE

 /**
  * PBUF_POOL_SIZE: Number of buffers in the default pbuf pool.
  *
  * When #LWIP_PBUF_FROM_CUSTOM_POOLS is enabled, the default buffer pool is
  * not used, and hence this value is set to zero.
  */
 #if LWIP_PBUF_FROM_CUSTOM_POOLS
 #define PBUF_POOL_SIZE                 (0)
 #else // LWIP_PBUF_FROM_CUSTOM_POOLS
 #ifndef PBUF_POOL_SIZE
 #define PBUF_POOL_SIZE                 (10)
 #endif // PBUF_POOL_SIZE
 #endif //LWIP_PBUF_FROM_CUSTOM_POOLS

 #if LWIP_PBUF_FROM_CUSTOM_POOLS

 /**
  * PBUF_POOL_BUFSIZE_LARGE: Payload size of largest pbuf buffer.
  *
  * The specified size must match #PBUF_POOL_BUFSIZE.
  */
 #define PBUF_POOL_BUFSIZE_LARGE        (PBUF_POOL_BUFSIZE)

 /**
  * PBUF_POOL_BUFSIZE_MEDIUM: Payload size of medium pbuf buffer.
  */
 #ifndef PBUF_POOL_BUFSIZE_MEDIUM
 #define PBUF_POOL_BUFSIZE_MEDIUM       (600)
 #endif // PBUF_POOL_BUFSIZE_MEDIUM

 /**
  * PBUF_POOL_BUFSIZE_SMALL: Payload size of small pbuf buffer.
  */
 #ifndef PBUF_POOL_BUFSIZE_SMALL
 #define PBUF_POOL_BUFSIZE_SMALL        (200)
 #endif // PBUF_POOL_BUFSIZE_SMALL

 /**
  * PBUF_POOL_SIZE_LARGE: Number of buffers in the large pbuf pool.
  */
 #ifndef PBUF_POOL_SIZE_LARGE
 #define PBUF_POOL_SIZE_LARGE           (5)
 #endif // PBUF_POOL_SIZE_LARGE

 /**
  * PBUF_POOL_SIZE_MEDIUM: Number of buffers in the medium pbuf pool.
  */
 #ifndef PBUF_POOL_SIZE_MEDIUM
 #define PBUF_POOL_SIZE_MEDIUM          (5)
 #endif // PBUF_POOL_SIZE_MEDIUM

 /**
  * PBUF_POOL_SIZE_SMALL: Number of buffers in the small pbuf pool.
  */
 #ifndef PBUF_POOL_SIZE_SMALL
 #define PBUF_POOL_SIZE_SMALL           (5)
 #endif // PBUF_POOL_SIZE_SMALL

 /**
  * PBUF_CUSTOM_POOL_IDX_START: memp pool number for the pool containing the smallest
  * pbuf buffer.
  *
  * Note this value must be numerically >= #PBUF_CUSTOM_POOL_IDX_END
  */
 #define PBUF_CUSTOM_POOL_IDX_START     (MEMP_PBUF_POOL_SMALL)

 /**
  * PBUF_CUSTOM_POOL_IDX_END: memp pool number for the pool containing the largest
  * pbuf buffer.
  *
  * Note this value must be numerically <= #PBUF_CUSTOM_POOL_IDX_START
  */
 #define PBUF_CUSTOM_POOL_IDX_END       (MEMP_PBUF_POOL_LARGE)

 #endif // LWIP_PBUF_FROM_CUSTOM_POOLS

 /**
  * MEMP_USE_CUSTOM_POOLS: Enable use of custom memory pools defined in lwippools.h.
  * Required if LWIP_PBUF_FROM_CUSTOM_POOLS is enabled.
  */
 #if LWIP_PBUF_FROM_CUSTOM_POOLS
 #undef MEMP_USE_CUSTOM_POOLS
 #define MEMP_USE_CUSTOM_POOLS          (1)
 #else // LWIP_PBUF_FROM_CUSTOM_POOLS
 #ifndef MEMP_USE_CUSTOM_POOLS
 #define MEMP_USE_CUSTOM_POOLS          (0)
 #endif // MEMP_USE_CUSTOM_POOLS
 #endif // LWIP_PBUF_FROM_CUSTOM_POOLS

 /*
  * IP_REASS_MAX_PBUFS: Total maximum amount of pbufs waiting to be reassembled.
  * Since the received pbufs are enqueued, be sure to configure
  * PBUF_POOL_SIZE > IP_REASS_MAX_PBUFS so that the stack is still able to receive
  * packets even if the maximum amount of fragments is enqueued for reassembly!
  *
  */
 #if PBUF_POOL_SIZE > 2
 #ifndef IP_REASS_MAX_PBUFS
 #define IP_REASS_MAX_PBUFS              (PBUF_POOL_SIZE - 2)
 #endif
 #else
 #define IP_REASS_MAX_PBUFS              0
 #define IP_REASSEMBLY                   0
 #endif

 /**
  * MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for
  * reassembly (whole packets, not fragments!)
  */
 #if IP_REASS_MAX_PBUFS > 1
 #ifndef MEMP_NUM_REASSDATA
 #define MEMP_NUM_REASSDATA              (IP_REASS_MAX_PBUFS - 1)
 #endif
 #else
 #define MEMP_NUM_REASSDATA              0
 #endif

 /**
  * ETHERNET_MTU: MTU for standard Ethernet.
  */
 #define ETHERNET_MTU                   (1500)

 /**
  * TCP_MSS: TCP Maximum segment size.
  *
  * For the receive side, this MSS is advertised to the remote side
  * when opening a connection. For the transmit size, this MSS sets
  * an upper limit on the MSS advertised by the remote host.
  *
  * Set to the default value for IPv4, which is the default IPv4 MTU
  * minus the IP and TCP header sizes (576 - 20 - 20 = 536).
  */
 #define TCP_MSS                        (536)

 /**
  * TCP_SND_BUF: TCP sender buffer space (bytes).
  * must be at least as much as (2 * TCP_MSS) for things to work smoothly
  */
 #define TCP_SND_BUF                    (6 * TCP_MSS)


 /**
  * LWIP_NETIF_TX_SINGLE_PBUF: if this is set to 1, lwIP tries to put all data
  * to be sent into one single pbuf. This is for compatibility with DMA-enabled
  * MACs that do not support scatter-gather.
  * Beware that this might involve CPU-memcpy before transmitting that would not
  * be needed without this flag! Use this only if you need to!
  *
  * @todo: TCP and IP-frag do not work with this, yet:
  */
 #define LWIP_NETIF_TX_SINGLE_PBUF      (0)


 /** Define LWIP_COMPAT_MUTEX if the port has no mutexes and binary semaphores
  *  should be used instead
  */
 #define LWIP_COMPAT_MUTEX              (1)


 /** Define LWIP_COMPAT_MUTEX_ALLOWED if the platform concurrency model has no
  * support for avoiding priority inversion deadlocks
  */
 #define LWIP_COMPAT_MUTEX_ALLOWED      (1)


 /**
  * 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           (0)


 /**
  * TCPIP_THREAD_STACKSIZE: The stack size used by the main tcpip thread.
  * The stack size value itself is platform-dependent, but is passed to
  * sys_thread_new() when the thread is created.
  */
 #define TCPIP_THREAD_STACKSIZE         (1300)


 /**
  * TCPIP_THREAD_PRIO: The priority assigned to the main tcpip thread.
  * The priority value itself is platform-dependent, but is passed to
  * sys_thread_new() when the thread is created.
  */
 #define TCPIP_THREAD_PRIO              (7)

 #define TCP_LISTEN_BACKLOG     (1)


 /**
  * LWIP_DHCP==1: Enable DHCP module.
  */
 #define LWIP_DHCP                      (1)

 /**
  * Enable automatic IPv4 link-local address assignment.
  */
 #define LWIP_AUTOIP                     1

 /**
  * Allow DHCP and automatic IPv4 link-local address assignment to
  * work cooperatively.
  */
 #define LWIP_DHCP_AUTOIP_COOP           1

 /**
  * LWIP_PROVIDE_ERRNO: errno definitions from the Standard C Library.
  */
 #undef  LWIP_PROVIDE_ERRNO

 /**
  * ERRNO: set errno on interface invocation failures
  */
 #define ERRNO                          (1)

 /**
  * MEMP_NUM_RAW_PCB: Number of raw connection PCBs
  * (requires the LWIP_RAW option)
  */
 #ifndef MEMP_NUM_RAW_PCB
 #define MEMP_NUM_RAW_PCB                (5)
 #endif

 /**
  * MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
  * per active UDP "connection".
  * (requires the LWIP_UDP option)
  */
 #ifndef MEMP_NUM_UDP_PCB
 #define MEMP_NUM_UDP_PCB                (6)
 #endif

 /**
  * MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts.
  * (requires NO_SYS==0)
  * Must be larger than or equal to LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT
  * Since each InetTimer requires one matching LwIP timeout (if built with LwIP option), the number should be expanded to be
  * (All LwIP needs) + (max number of InetTimers)
  */
 #define MEMP_NUM_SYS_TIMEOUT           (48)


 /* ARP before DHCP causes multi-second delay  - turn it off */
 #define DHCP_DOES_ARP_CHECK            (0)

 /**
  * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1) and loopif.c
  */
 #define LWIP_HAVE_LOOPIF               (1)

 /**
  * LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP
  * address equal to the netif IP address, looping them back up the stack.
  */
 #define LWIP_NETIF_LOOPBACK            (0)

 /**
  * MEMP_NUM_NETCONN: the number of struct netconns.
  * (only needed if you use the sequential API, like api_lib.c)
  */
 #define MEMP_NUM_NETCONN               (8)

 /**
  * LWIP_SO_RCVTIMEO==1: Enable SO_RCVTIMEO processing.
  */
 #define LWIP_SO_RCVTIMEO               (1)


 /**
  * LWIP_IGMP==1: Turn on IGMP module.
  */
 #define LWIP_IGMP                      (1)


 /**
  * SO_REUSE==1: Enable SO_REUSEADDR option.
  * Required by IGMP for reuse of multicast address and port by other sockets
  */
 #define SO_REUSE                       (1)


 /**
  * LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS
  * transport.
  */
 #define LWIP_DNS                        (1)

 /**
  * LWIP_POSIX_SOCKETS_IO_NAMES==1: Enable POSIX-style sockets functions names.
  * Disable this option if you use a POSIX operating system that uses the same
  * names (read, write & close). (only used if you use sockets.c)
  *
  * We disable this because this otherwise collides with the Standard C
  * Library where both LWIP and its headers are included.
  */
 #define LWIP_POSIX_SOCKETS_IO_NAMES     (0)

 #ifdef LWIP_SO_RCVBUF
 #if ( LWIP_SO_RCVBUF == 1 )
 #include <limits.h>  /* Needed because RECV_BUFSIZE_DEFAULT is defined as INT_MAX */
 #endif /* if ( LWIP_SO_RCVBUF == 1 ) */
 #endif /* ifdef LWIP_SO_RCVBUF */

 /**
  * LWIP_STATS : Turn on statistics gathering
  */
 #define LWIP_STATS                     (1)

 /**
  * LWIP_IPV6==1: Enable IPv6
  */
 #ifndef LWIP_IPV6
 #define LWIP_IPV6                       1
 #endif

 /**
  * LWIP_IPV6_DHCP6==1: enable DHCPv6 stateful address autoconfiguration.
  */
 #ifndef LWIP_IPV6_DHCP6
 #define LWIP_IPV6_DHCP6                 1
 #endif

 /**
  * LWIP_IPV6_MLD==1: Enable multicast listener discovery protocol.
  */
 #ifndef LWIP_IPV6_MLD
 #define LWIP_IPV6_MLD                   1
 #endif

 /**
  * MEMP_NUM_MLD6_GROUP: Maximum number of IPv6 multicast groups that
  * can be joined. Allocate one (1) for the link local address
  * solicited node multicast group, one (1) for the any/unspecified
  * address solicited node multicast group (which seems to be used
  * for/by DAD in this epoch of LwIP), and another four (4) for
  * application groups.
  */
 #define MEMP_NUM_MLD6_GROUP             ((1 + 1) + 4)

 /**
  * LWIP_IPV6_FORWARD==1: Enable IPv6 forwarding.
  */
 #ifndef LWIP_IPV6_FORWARD
 #define LWIP_IPV6_FORWARD               1
 #endif

 /**
  * LWIP_IPV6_ROUTE_TABLE_SUPPORT==1: Enable support for a routing table and refering these during forwarding.
  */
 #ifndef LWIP_IPV6_ROUTE_TABLE_SUPPORT
 #define LWIP_IPV6_ROUTE_TABLE_SUPPORT   1
 #endif

 /**
  * IPV6_FRAG_COPYHEADER==1: Enable copying of IPv6 fragment headers on 64-bit platforms.
  */
 #ifndef IPV6_FRAG_COPYHEADER
 #if defined(__x86_64__)
 #define IPV6_FRAG_COPYHEADER            1
 #else
 #define IPV6_FRAG_COPYHEADER            0
 #endif
 #endif

 /**
  * MEMP_OVERFLOW_CHECK: memp overflow protection
  *
  * IMPORTANT: A bug in older versions of LwIP will trigger unit test failures whenever
  * #MEMP_OVERFLOW_CHECK is enabled.  This bug was fixed in upstream LwIP in commit 2fd2b68,
  * but remains in the openweave third_party version.
  */
 #define MEMP_OVERFLOW_CHECK            ( 0 )


 /*
  * LwIP Logging
  *
  * By default, enable LwIP debug logging for debug builds, using a global
  * flag (gLwIP_DebugFlags) to control the level.  This allows the user to
  * control LwIP logging output from the command line.
  */

 #ifdef DEBUG
 #define LWIP_DEBUG
 #endif

 #ifdef LWIP_DEBUG

 #define MEMP_SANITY_CHECK              ( 1 )

 #define MEM_DEBUG                       LWIP_DBG_OFF
 #define MEMP_DEBUG                      LWIP_DBG_OFF
 #define PBUF_DEBUG                      LWIP_DBG_ON
 #define API_LIB_DEBUG                   LWIP_DBG_ON
 #define API_MSG_DEBUG                   LWIP_DBG_ON
 #define TCPIP_DEBUG                     LWIP_DBG_ON
 #define NETIF_DEBUG                     LWIP_DBG_ON
 #define SOCKETS_DEBUG                   LWIP_DBG_ON
 #define DEMO_DEBUG                      LWIP_DBG_ON
 #define IP_DEBUG                        LWIP_DBG_ON
 #define IP6_DEBUG                       LWIP_DBG_ON
 #define IP_REASS_DEBUG                  LWIP_DBG_ON
 #define RAW_DEBUG                       LWIP_DBG_ON
 #define ICMP_DEBUG                      LWIP_DBG_ON
 #define UDP_DEBUG                       LWIP_DBG_ON
 #define TCP_DEBUG                       LWIP_DBG_ON
 #define TCP_INPUT_DEBUG                 LWIP_DBG_ON
 #define TCP_OUTPUT_DEBUG                LWIP_DBG_ON
 #define TCP_RTO_DEBUG                   LWIP_DBG_ON
 #define TCP_CWND_DEBUG                  LWIP_DBG_ON
 #define TCP_WND_DEBUG                   LWIP_DBG_ON
 #define TCP_FR_DEBUG                    LWIP_DBG_ON
 #define TCP_QLEN_DEBUG                  LWIP_DBG_ON
 #define TCP_RST_DEBUG                   LWIP_DBG_ON
 #define PPP_DEBUG                       LWIP_DBG_OFF

 extern unsigned char gLwIP_DebugFlags;
 #define LWIP_DBG_TYPES_ON gLwIP_DebugFlags

 #endif // LWIP_DEBUG

 /**
  * The WICED definition of PBUF_POOL_BUFSIZE includes a number of
  * sizeof() instantiations which causes the C preprocessor to
  * fail. Disable TCP configuration constant sanity checks to work
  * around this.
  */
 #define LWIP_DISABLE_TCP_SANITY_CHECKS (1)

 /**
  * LwIP defaults the size of most mailboxes (i.e. message queues) to
  * zero (0). That generally makes RTOSes such as FreeRTOS very
  * unhappy. Specify reasonable defaults instead.
  */
 #define TCPIP_MBOX_SIZE                 6

 #define DEFAULT_RAW_RECVMBOX_SIZE       6

 #define DEFAULT_UDP_RECVMBOX_SIZE       6

 #define DEFAULT_TCP_RECVMBOX_SIZE       6


 /*
    ---------------------------------
    ---------- RAW options ----------
    ---------------------------------
 */

 /**
  * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
  */
 #define LWIP_RAW                        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


 /**
  * Enable locking in the lwip (tcpip) thread.
  */
 #ifndef LWIP_TCPIP_CORE_LOCKING
 #define LWIP_TCPIP_CORE_LOCKING         1
 #endif


 /**
  * Enable support for TCP keepalives.
  */
 #ifndef LWIP_TCP_KEEPALIVE
 #define LWIP_TCP_KEEPALIVE              1
 #endif


 /** LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS:
  * Ensure compatibilty with platforms where LwIP is configured not to define the host/network byte-order conversion
  * functions normally provided in <arpa/inet.h> on POSIX systems.
  */
 #ifndef LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS
 #define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS   1
 #endif

 #endif /* __LWIPOPTS_H__ */
	/*
	*
	* Copyright (c) 2019 Google LLC.
	* Copyright (c) 2014-2018 Nest Labs, Inc.
	* All rights reserved.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	/**
	* @file
	* This file describes compile-time constants for configuring LwIP
	* for use in standalone (desktop) environments.
	*
	*/


	#ifndef __LWIPOPTS_H__
	#define __LWIPOPTS_H__

	#include <stdlib.h>

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

	/**
	* MEM_ALIGNMENT: should be set to the alignment of the CPU
	* 4 byte alignment -> #define MEM_ALIGNMENT 4
	* 2 byte alignment -> #define MEM_ALIGNMENT 2
	*/
	#define MEM_ALIGNMENT (4)

	/**
	* MEM_SIZE: specify bigger memory size to pass LwIP-internal unit tests
	* (only needed when building tests)
	*/
	#ifdef NL_WEAVE_WITH_TESTS
	#define MEM_SIZE (16000)
	#endif

	/**
	* Use Malloc from LibC - saves code space
	*/
	#define MEM_LIBC_MALLOC (0)

	/**
	* Do not use memory pools to create fixed, statically allocated pools of
	* memory in lieu of the Standard C Library heap and APIs.
	*/
	#define MEM_USE_POOLS (0)

	/**
	* MEMP_NUM_NETBUF: the number of struct netbufs.
	* (only needed if you use the sequential API, like api_lib.c)
	*/
	#define MEMP_NUM_NETBUF (PBUF_POOL_SIZE)

	/**
	* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
	* (requires the LWIP_TCP option)
	*/
	#define MEMP_NUM_TCP_SEG (TCP_SND_QUEUELEN+1)

	/**
	* LWIP_PBUF_FROM_CUSTOM_POOLS: Enable the use of variable-sized pbuf pools.
	*/
	#ifndef LWIP_PBUF_FROM_CUSTOM_POOLS
	#define LWIP_PBUF_FROM_CUSTOM_POOLS (1)
	#endif // LWIP_PBUF_FROM_CUSTOM_POOLS

	/**
	* PBUF_POOL_BUFSIZE: Payload size of default pbuf buffer.
	*
	* For the Weave standalone LwIP build, this is sized to accommodate the largest
	* possible standard Ethernet frame (Ethernet header + 1500 bytes of payload),
	* plus any additional bytes needed for a link encapsulation header (which is 0
	* in the default case).
	*/
	#ifndef PBUF_POOL_BUFSIZE
	#define PBUF_POOL_BUFSIZE (LWIP_MEM_ALIGN_SIZE(PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN + ETHERNET_MTU))
	#endif // PBUF_POOL_BUFSIZE

	/**
	* PBUF_POOL_SIZE: Number of buffers in the default pbuf pool.
	*
	* When #LWIP_PBUF_FROM_CUSTOM_POOLS is enabled, the default buffer pool is
	* not used, and hence this value is set to zero.
	*/
	#if LWIP_PBUF_FROM_CUSTOM_POOLS
	#define PBUF_POOL_SIZE (0)
	#else // LWIP_PBUF_FROM_CUSTOM_POOLS
	#ifndef PBUF_POOL_SIZE
	#define PBUF_POOL_SIZE (10)
	#endif // PBUF_POOL_SIZE
	#endif //LWIP_PBUF_FROM_CUSTOM_POOLS

	#if LWIP_PBUF_FROM_CUSTOM_POOLS

	/**
	* PBUF_POOL_BUFSIZE_LARGE: Payload size of largest pbuf buffer.
	*
	* The specified size must match #PBUF_POOL_BUFSIZE.
	*/
	#define PBUF_POOL_BUFSIZE_LARGE (PBUF_POOL_BUFSIZE)

	/**
	* PBUF_POOL_BUFSIZE_MEDIUM: Payload size of medium pbuf buffer.
	*/
	#ifndef PBUF_POOL_BUFSIZE_MEDIUM
	#define PBUF_POOL_BUFSIZE_MEDIUM (600)
	#endif // PBUF_POOL_BUFSIZE_MEDIUM

	/**
	* PBUF_POOL_BUFSIZE_SMALL: Payload size of small pbuf buffer.
	*/
	#ifndef PBUF_POOL_BUFSIZE_SMALL
	#define PBUF_POOL_BUFSIZE_SMALL (200)
	#endif // PBUF_POOL_BUFSIZE_SMALL

	/**
	* PBUF_POOL_SIZE_LARGE: Number of buffers in the large pbuf pool.
	*/
	#ifndef PBUF_POOL_SIZE_LARGE
	#define PBUF_POOL_SIZE_LARGE (5)
	#endif // PBUF_POOL_SIZE_LARGE

	/**
	* PBUF_POOL_SIZE_MEDIUM: Number of buffers in the medium pbuf pool.
	*/
	#ifndef PBUF_POOL_SIZE_MEDIUM
	#define PBUF_POOL_SIZE_MEDIUM (5)
	#endif // PBUF_POOL_SIZE_MEDIUM

	/**
	* PBUF_POOL_SIZE_SMALL: Number of buffers in the small pbuf pool.
	*/
	#ifndef PBUF_POOL_SIZE_SMALL
	#define PBUF_POOL_SIZE_SMALL (5)
	#endif // PBUF_POOL_SIZE_SMALL

	/**
	* PBUF_CUSTOM_POOL_IDX_START: memp pool number for the pool containing the smallest
	* pbuf buffer.
	*
	* Note this value must be numerically >= #PBUF_CUSTOM_POOL_IDX_END
	*/
	#define PBUF_CUSTOM_POOL_IDX_START (MEMP_PBUF_POOL_SMALL)

	/**
	* PBUF_CUSTOM_POOL_IDX_END: memp pool number for the pool containing the largest
	* pbuf buffer.
	*
	* Note this value must be numerically <= #PBUF_CUSTOM_POOL_IDX_START
	*/
	#define PBUF_CUSTOM_POOL_IDX_END (MEMP_PBUF_POOL_LARGE)

	#endif // LWIP_PBUF_FROM_CUSTOM_POOLS

	/**
	* MEMP_USE_CUSTOM_POOLS: Enable use of custom memory pools defined in lwippools.h.
	* Required if LWIP_PBUF_FROM_CUSTOM_POOLS is enabled.
	*/
	#if LWIP_PBUF_FROM_CUSTOM_POOLS
	#undef MEMP_USE_CUSTOM_POOLS
	#define MEMP_USE_CUSTOM_POOLS (1)
	#else // LWIP_PBUF_FROM_CUSTOM_POOLS
	#ifndef MEMP_USE_CUSTOM_POOLS
	#define MEMP_USE_CUSTOM_POOLS (0)
	#endif // MEMP_USE_CUSTOM_POOLS
	#endif // LWIP_PBUF_FROM_CUSTOM_POOLS

	/*
	* IP_REASS_MAX_PBUFS: Total maximum amount of pbufs waiting to be reassembled.
	* Since the received pbufs are enqueued, be sure to configure
	* PBUF_POOL_SIZE > IP_REASS_MAX_PBUFS so that the stack is still able to receive
	* packets even if the maximum amount of fragments is enqueued for reassembly!
	*
	*/
	#if PBUF_POOL_SIZE > 2
	#ifndef IP_REASS_MAX_PBUFS
	#define IP_REASS_MAX_PBUFS (PBUF_POOL_SIZE - 2)
	#endif
	#else
	#define IP_REASS_MAX_PBUFS 0
	#define IP_REASSEMBLY 0
	#endif

	/**
	* MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for
	* reassembly (whole packets, not fragments!)
	*/
	#if IP_REASS_MAX_PBUFS > 1
	#ifndef MEMP_NUM_REASSDATA
	#define MEMP_NUM_REASSDATA (IP_REASS_MAX_PBUFS - 1)
	#endif
	#else
	#define MEMP_NUM_REASSDATA 0
	#endif

	/**
	* ETHERNET_MTU: MTU for standard Ethernet.
	*/
	#define ETHERNET_MTU (1500)

	/**
	* TCP_MSS: TCP Maximum segment size.
	*
	* For the receive side, this MSS is advertised to the remote side
	* when opening a connection. For the transmit size, this MSS sets
	* an upper limit on the MSS advertised by the remote host.
	*
	* Set to the default value for IPv4, which is the default IPv4 MTU
	* minus the IP and TCP header sizes (576 - 20 - 20 = 536).
	*/
	#define TCP_MSS (536)

	/**
	* TCP_SND_BUF: TCP sender buffer space (bytes).
	* must be at least as much as (2 * TCP_MSS) for things to work smoothly
	*/
	#define TCP_SND_BUF (6 * TCP_MSS)


	/**
	* LWIP_NETIF_TX_SINGLE_PBUF: if this is set to 1, lwIP tries to put all data
	* to be sent into one single pbuf. This is for compatibility with DMA-enabled
	* MACs that do not support scatter-gather.
	* Beware that this might involve CPU-memcpy before transmitting that would not
	* be needed without this flag! Use this only if you need to!
	*
	* @todo: TCP and IP-frag do not work with this, yet:
	*/
	#define LWIP_NETIF_TX_SINGLE_PBUF (0)


	/** Define LWIP_COMPAT_MUTEX if the port has no mutexes and binary semaphores
	* should be used instead
	*/
	#define LWIP_COMPAT_MUTEX (1)


	/** Define LWIP_COMPAT_MUTEX_ALLOWED if the platform concurrency model has no
	* support for avoiding priority inversion deadlocks
	*/
	#define LWIP_COMPAT_MUTEX_ALLOWED (1)


	/**
	* 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 (0)


	/**
	* TCPIP_THREAD_STACKSIZE: The stack size used by the main tcpip thread.
	* The stack size value itself is platform-dependent, but is passed to
	* sys_thread_new() when the thread is created.
	*/
	#define TCPIP_THREAD_STACKSIZE (1300)


	/**
	* TCPIP_THREAD_PRIO: The priority assigned to the main tcpip thread.
	* The priority value itself is platform-dependent, but is passed to
	* sys_thread_new() when the thread is created.
	*/
	#define TCPIP_THREAD_PRIO (7)

	#define TCP_LISTEN_BACKLOG (1)


	/**
	* LWIP_DHCP==1: Enable DHCP module.
	*/
	#define LWIP_DHCP (1)

	/**
	* Enable automatic IPv4 link-local address assignment.
	*/
	#define LWIP_AUTOIP 1

	/**
	* Allow DHCP and automatic IPv4 link-local address assignment to
	* work cooperatively.
	*/
	#define LWIP_DHCP_AUTOIP_COOP 1

	/**
	* LWIP_PROVIDE_ERRNO: errno definitions from the Standard C Library.
	*/
	#undef LWIP_PROVIDE_ERRNO

	/**
	* ERRNO: set errno on interface invocation failures
	*/
	#define ERRNO (1)

	/**
	* MEMP_NUM_RAW_PCB: Number of raw connection PCBs
	* (requires the LWIP_RAW option)
	*/
	#ifndef MEMP_NUM_RAW_PCB
	#define MEMP_NUM_RAW_PCB (5)
	#endif

	/**
	* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
	* per active UDP "connection".
	* (requires the LWIP_UDP option)
	*/
	#ifndef MEMP_NUM_UDP_PCB
	#define MEMP_NUM_UDP_PCB (6)
	#endif

	/**
	* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts.
	* (requires NO_SYS==0)
	* Must be larger than or equal to LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT
	* Since each InetTimer requires one matching LwIP timeout (if built with LwIP option), the number should be expanded to be
	* (All LwIP needs) + (max number of InetTimers)
	*/
	#define MEMP_NUM_SYS_TIMEOUT (48)


	/* ARP before DHCP causes multi-second delay - turn it off */
	#define DHCP_DOES_ARP_CHECK (0)

	/**
	* LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1) and loopif.c
	*/
	#define LWIP_HAVE_LOOPIF (1)

	/**
	* LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP
	* address equal to the netif IP address, looping them back up the stack.
	*/
	#define LWIP_NETIF_LOOPBACK (0)

	/**
	* MEMP_NUM_NETCONN: the number of struct netconns.
	* (only needed if you use the sequential API, like api_lib.c)
	*/
	#define MEMP_NUM_NETCONN (8)

	/**
	* LWIP_SO_RCVTIMEO==1: Enable SO_RCVTIMEO processing.
	*/
	#define LWIP_SO_RCVTIMEO (1)


	/**
	* LWIP_IGMP==1: Turn on IGMP module.
	*/
	#define LWIP_IGMP (1)


	/**
	* SO_REUSE==1: Enable SO_REUSEADDR option.
	* Required by IGMP for reuse of multicast address and port by other sockets
	*/
	#define SO_REUSE (1)


	/**
	* LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS
	* transport.
	*/
	#define LWIP_DNS (1)

	/**
	* LWIP_POSIX_SOCKETS_IO_NAMES==1: Enable POSIX-style sockets functions names.
	* Disable this option if you use a POSIX operating system that uses the same
	* names (read, write & close). (only used if you use sockets.c)
	*
	* We disable this because this otherwise collides with the Standard C
	* Library where both LWIP and its headers are included.
	*/
	#define LWIP_POSIX_SOCKETS_IO_NAMES (0)

	#ifdef LWIP_SO_RCVBUF
	#if ( LWIP_SO_RCVBUF == 1 )
	#include <limits.h> /* Needed because RECV_BUFSIZE_DEFAULT is defined as INT_MAX */
	#endif /* if ( LWIP_SO_RCVBUF == 1 ) */
	#endif /* ifdef LWIP_SO_RCVBUF */

	/**
	* LWIP_STATS : Turn on statistics gathering
	*/
	#define LWIP_STATS (1)

	/**
	* LWIP_IPV6==1: Enable IPv6
	*/
	#ifndef LWIP_IPV6
	#define LWIP_IPV6 1
	#endif

	/**
	* LWIP_IPV6_DHCP6==1: enable DHCPv6 stateful address autoconfiguration.
	*/
	#ifndef LWIP_IPV6_DHCP6
	#define LWIP_IPV6_DHCP6 1
	#endif

	/**
	* LWIP_IPV6_MLD==1: Enable multicast listener discovery protocol.
	*/
	#ifndef LWIP_IPV6_MLD
	#define LWIP_IPV6_MLD 1
	#endif

	/**
	* MEMP_NUM_MLD6_GROUP: Maximum number of IPv6 multicast groups that
	* can be joined. Allocate one (1) for the link local address
	* solicited node multicast group, one (1) for the any/unspecified
	* address solicited node multicast group (which seems to be used
	* for/by DAD in this epoch of LwIP), and another four (4) for
	* application groups.
	*/
	#define MEMP_NUM_MLD6_GROUP ((1 + 1) + 4)

	/**
	* LWIP_IPV6_FORWARD==1: Enable IPv6 forwarding.
	*/
	#ifndef LWIP_IPV6_FORWARD
	#define LWIP_IPV6_FORWARD 1
	#endif

	/**
	* LWIP_IPV6_ROUTE_TABLE_SUPPORT==1: Enable support for a routing table and refering these during forwarding.
	*/
	#ifndef LWIP_IPV6_ROUTE_TABLE_SUPPORT
	#define LWIP_IPV6_ROUTE_TABLE_SUPPORT 1
	#endif

	/**
	* IPV6_FRAG_COPYHEADER==1: Enable copying of IPv6 fragment headers on 64-bit platforms.
	*/
	#ifndef IPV6_FRAG_COPYHEADER
	#if defined(__x86_64__)
	#define IPV6_FRAG_COPYHEADER 1
	#else
	#define IPV6_FRAG_COPYHEADER 0
	#endif
	#endif

	/**
	* MEMP_OVERFLOW_CHECK: memp overflow protection
	*
	* IMPORTANT: A bug in older versions of LwIP will trigger unit test failures whenever
	* #MEMP_OVERFLOW_CHECK is enabled. This bug was fixed in upstream LwIP in commit 2fd2b68,
	* but remains in the openweave third_party version.
	*/
	#define MEMP_OVERFLOW_CHECK ( 0 )


	/*
	* LwIP Logging
	*
	* By default, enable LwIP debug logging for debug builds, using a global
	* flag (gLwIP_DebugFlags) to control the level. This allows the user to
	* control LwIP logging output from the command line.
	*/

	#ifdef DEBUG
	#define LWIP_DEBUG
	#endif

	#ifdef LWIP_DEBUG

	#define MEMP_SANITY_CHECK ( 1 )

	#define MEM_DEBUG LWIP_DBG_OFF
	#define MEMP_DEBUG LWIP_DBG_OFF
	#define PBUF_DEBUG LWIP_DBG_ON
	#define API_LIB_DEBUG LWIP_DBG_ON
	#define API_MSG_DEBUG LWIP_DBG_ON
	#define TCPIP_DEBUG LWIP_DBG_ON
	#define NETIF_DEBUG LWIP_DBG_ON
	#define SOCKETS_DEBUG LWIP_DBG_ON
	#define DEMO_DEBUG LWIP_DBG_ON
	#define IP_DEBUG LWIP_DBG_ON
	#define IP6_DEBUG LWIP_DBG_ON
	#define IP_REASS_DEBUG LWIP_DBG_ON
	#define RAW_DEBUG LWIP_DBG_ON
	#define ICMP_DEBUG LWIP_DBG_ON
	#define UDP_DEBUG LWIP_DBG_ON
	#define TCP_DEBUG LWIP_DBG_ON
	#define TCP_INPUT_DEBUG LWIP_DBG_ON
	#define TCP_OUTPUT_DEBUG LWIP_DBG_ON
	#define TCP_RTO_DEBUG LWIP_DBG_ON
	#define TCP_CWND_DEBUG LWIP_DBG_ON
	#define TCP_WND_DEBUG LWIP_DBG_ON
	#define TCP_FR_DEBUG LWIP_DBG_ON
	#define TCP_QLEN_DEBUG LWIP_DBG_ON
	#define TCP_RST_DEBUG LWIP_DBG_ON
	#define PPP_DEBUG LWIP_DBG_OFF

	extern unsigned char gLwIP_DebugFlags;
	#define LWIP_DBG_TYPES_ON gLwIP_DebugFlags

	#endif // LWIP_DEBUG

	/**
	* The WICED definition of PBUF_POOL_BUFSIZE includes a number of
	* sizeof() instantiations which causes the C preprocessor to
	* fail. Disable TCP configuration constant sanity checks to work
	* around this.
	*/
	#define LWIP_DISABLE_TCP_SANITY_CHECKS (1)

	/**
	* LwIP defaults the size of most mailboxes (i.e. message queues) to
	* zero (0). That generally makes RTOSes such as FreeRTOS very
	* unhappy. Specify reasonable defaults instead.
	*/
	#define TCPIP_MBOX_SIZE 6

	#define DEFAULT_RAW_RECVMBOX_SIZE 6

	#define DEFAULT_UDP_RECVMBOX_SIZE 6

	#define DEFAULT_TCP_RECVMBOX_SIZE 6


	/*
	---------------------------------
	---------- RAW options ----------
	---------------------------------
	*/

	/**
	* LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
	*/
	#define LWIP_RAW 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


	/**
	* Enable locking in the lwip (tcpip) thread.
	*/
	#ifndef LWIP_TCPIP_CORE_LOCKING
	#define LWIP_TCPIP_CORE_LOCKING 1
	#endif


	/**
	* Enable support for TCP keepalives.
	*/
	#ifndef LWIP_TCP_KEEPALIVE
	#define LWIP_TCP_KEEPALIVE 1
	#endif


	/** LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS:
	* Ensure compatibilty with platforms where LwIP is configured not to define the host/network byte-order conversion
	* functions normally provided in <arpa/inet.h> on POSIX systems.
	*/
	#ifndef LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS
	#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS 1
	#endif

	#endif /* __LWIPOPTS_H__ */