📄 lwipopts.h
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/*
* 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 __LWIPOPTS_H__
#define __LWIPOPTS_H__
/*
* enable SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection
* for certain critical regions during buffer allocation, deallocation and memory
* allocation and deallocation.
*/
#ifndef SYS_LIGHTWEIGHT_PROT
#define SYS_LIGHTWEIGHT_PROT 1
#endif
#define NO_SYS 0
/* ---------- 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. */
/* Note: win32 crashes when not set to 1! There is still a bug in mem.c (DK)*/
#define MEM_ALIGNMENT 1
/* The TCP timer interval in milliseconds. */
#define TCP_TMR_INTERVAL 250
/* 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 0x2000
#define MEMP_SANITY_CHECK 0
/* 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 8
/* Number of raw connection PCBs */
#define MEMP_NUM_RAW_PCB 4
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
per active UDP "connection". */
#define MEMP_NUM_UDP_PCB 4
/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
connections. */
#define MEMP_NUM_TCP_PCB 8
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 8
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
segments. */
#define MEMP_NUM_TCP_SEG 32
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
timeouts. */
#define MEMP_NUM_SYS_TIMEOUT 6
/* The following four are used only with the sequential API and can be
set to 0 if the application only will use the raw API. */
/* MEMP_NUM_NETBUF: the number of struct netbufs. */
#define MEMP_NUM_NETBUF 8
/* MEMP_NUM_NETCONN: the number of struct netconns. */
#define MEMP_NUM_NETCONN 8
/* MEMP_NUM_APIMSG: the number of struct api_msg, used for
communication between the TCP/IP stack and the sequential
programs. */
#define MEMP_NUM_API_MSG 16
/* MEMP_NUM_TCPIPMSG: the number of struct tcpip_msg, which is used
for sequential API communication and incoming packets. Used in
src/api/tcpip.c. */
#define MEMP_NUM_TCPIP_MSG 32
/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE 16
/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE 256
/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
link level header. Defaults to 14 for Ethernet. */
#define PBUF_LINK_HLEN 14
/* ---------- ARP options ---------- */
/** Number of active hardware address, IP address pairs cached */
#define ARP_TABLE_SIZE 10
/**
* If enabled, outgoing packets are queued during hardware address
* resolution.
*
* This feature has not stabilized yet. Single-packet queueing is
* believed to be stable, multi-packet queueing is believed to
* clash with the TCP segment queueing.
*
* As multi-packet-queueing is currently disabled, enabling this
* _should_ work, but we need your testing feedback on lwip-users.
*
*/
#define ARP_QUEUEING 1
/* ---------- IP options ---------- */
/* Define IP_FORWARD to 1 if you wish to have the ability to forward
IP packets across network interfaces. If you are going to run lwIP
on a device with only one network interface, define this to 0. */
#define IP_FORWARD 0
/* If defined to 1, IP options are allowed (but not parsed). If
defined to 0, all packets with IP options are dropped. */
#define IP_OPTIONS 1
/** IP reassembly and segmentation. Even if they both deal with IP
* fragments, note that these are orthogonal, one dealing with incoming
* packets, the other with outgoing packets
*/
/** Reassemble incoming fragmented IP packets */
#define IP_REASSEMBLY 1
/** Fragment outgoing IP packets if their size exceeds MTU */
#define IP_FRAG 1
/* ---------- ICMP options ---------- */
#define ICMP_TTL 255
/* ---------- RAW options ---------- */
#define LWIP_RAW 0
#define RAW_TTL 255
/* ---------- DHCP options ---------- */
#define LWIP_DHCP 0
/* 1 if you want to do an ARP check on the offered address
(recommended). */
#define DHCP_DOES_ARP_CHECK 1
/* ---------- UDP options ---------- */
#define LWIP_UDP 1
#define UDP_TTL 255
/* ---------- TCP options ---------- */
#define LWIP_TCP 1
#define TCP_TTL 255
#define TCP_WND 2048
#define TCP_MAXRTX 12
#define TCP_SYNMAXRTX 6
/* 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 512 /*1456*/
/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF 512
/* TCP sender buffer space (pbufs). This must be at least = 2 *
TCP_SND_BUF/TCP_MSS for things to work. */
#define TCP_SND_QUEUELEN 4 * 4 * TCP_SND_BUF/TCP_MSS
/* Maximum number of retransmissions of data segments. */
/* Maximum number of retransmissions of SYN segments. */
/* TCP writable space (bytes). This must be less than or equal
to TCP_SND_BUF. It is the amount of space which must be
available in the tcp snd_buf for select to return writable */
#define TCP_SNDLOWAT TCP_SND_BUF/2
/* Support loop interface (127.0.0.1) */
#define LWIP_HAVE_LOOPIF 1
#ifdef LWIP_EVENT_API
#undef LWIP_EVENT_API
#endif
#define LWIP_COMPAT_SOCKETS 1
#define TCPIP_THREAD_PRIO 2
#define SLIPIF_THREAD_PRIO 1
#define PPP_THREAD_PRIO 1
#define DEFAULT_THREAD_PRIO 1
/* ---------- Socket Options ---------- */
/* Enable SO_REUSEADDR and SO_REUSEPORT options */
/* --> removed in lwip 1.1.1
#ifndef SO_REUSE
# define SO_REUSE 0
#endif
*/
/* ---------- Statistics options ---------- */
#define LWIP_STATS 1
#if LWIP_STATS
#define LWIP_STATS_DISPLAY 0
#define LINK_STATS 1
#define IP_STATS 1
#define IPFRAG_STATS 1
#define ICMP_STATS 1
#define UDP_STATS 1
#define TCP_STATS 1
#define MEM_STATS 1
#define MEMP_STATS 1
#define PBUF_STATS 1
#define SYS_STATS 1
#define RAW_STATS 0
#else
#define LINK_STATS 0
#define IP_STATS 0
#define IPFRAG_STATS 0
#define ICMP_STATS 0
#define UDP_STATS 0
#define TCP_STATS 0
#define MEM_STATS 0
#define MEMP_STATS 0
#define PBUF_STATS 0
#define SYS_STATS 0
#define RAW_STATS 0
#define LWIP_STATS_DISPLAY 0
#endif /* LWIP_STATS */
/* ---------- PPP options ---------- */
#define PPP_SUPPORT 0 /* Set for PPP */
#if PPP_SUPPORT
#define NUM_PPP 1 /* Max PPP sessions. */
#define PAP_SUPPORT 0 /* Set for PAP. */
#define CHAP_SUPPORT 0 /* Set for CHAP. */
#define MSCHAP_SUPPORT 0 /* Set for MSCHAP (NOT FUNCTIONAL!) */
#define CBCP_SUPPORT 0 /* Set for CBCP (NOT FUNCTIONAL!) */
#define CCP_SUPPORT 0 /* Set for CCP (NOT FUNCTIONAL!) */
#define VJ_SUPPORT 0 /* Set for VJ header compression. */
#define MD5_SUPPORT 0 /* Set for MD5 (see also CHAP) */
/*
* Timeouts.
*/
#define FSM_DEFTIMEOUT 6 /* Timeout time in seconds */
#define FSM_DEFMAXTERMREQS 2 /* Maximum Terminate-Request transmissions */
#define FSM_DEFMAXCONFREQS 10 /* Maximum Configure-Request transmissions */
#define FSM_DEFMAXNAKLOOPS 5 /* Maximum number of nak loops */
#define UPAP_DEFTIMEOUT 6 /* Timeout (seconds) for retransmitting req */
#define UPAP_DEFREQTIME 30 /* Time to wait for auth-req from peer */
#define CHAP_DEFTIMEOUT 6 /* Timeout time in seconds */
#define CHAP_DEFTRANSMITS 10 /* max # times to send challenge */
/* Interval in seconds between keepalive echo requests, 0 to disable. */
#if 1
#define LCP_ECHOINTERVAL 0
#else
#define LCP_ECHOINTERVAL 10
#endif
/* Number of unanswered echo requests before failure. */
#define LCP_MAXECHOFAILS 3
/* Max Xmit idle time (in jiffies) before resend flag char. */
#define PPP_MAXIDLEFLAG 100
/*
* Packet sizes
*
* Note - lcp shouldn't be allowed to negotiate stuff outside these
* limits. See lcp.h in the pppd directory.
* (XXX - these constants should simply be shared by lcp.c instead
* of living in lcp.h)
*/
#define PPP_MTU 1500 /* Default MTU (size of Info field) */
#if 0
#define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN)
#else
#define PPP_MAXMTU 1500 /* Largest MTU we allow */
#endif
#define PPP_MINMTU 64
#define PPP_MRU 1500 /* default MRU = max length of info field */
#define PPP_MAXMRU 1500 /* Largest MRU we allow */
#define PPP_DEFMRU 296 /* Try for this */
#define PPP_MINMRU 128 /* No MRUs below this */
#define MAXNAMELEN 256 /* max length of hostname or name for auth */
#define MAXSECRETLEN 256 /* max length of password or secret */
#endif /* PPP_SUPPORT */
/* checksum options - set to zero for hardware checksum support */
#define CHECKSUM_GEN_IP 1
#define CHECKSUM_GEN_UDP 1
#define CHECKSUM_GEN_TCP 1
#define CHECKSUM_CHECK_IP 1
#define CHECKSUM_CHECK_UDP 1
#define CHECKSUM_CHECK_TCP 1
/* Debugging options all default to off */
#ifdef _DBG
#define LWIP_DEBUG
#endif
#define DBG_TYPES_ON SYS_DEBUG
#define ETHARP_DEBUG DBG_OFF
#define NETIF_DEBUG DBG_OFF
#define PBUF_DEBUG DBG_OFF
#define API_LIB_DEBUG DBG_OFF
#define API_MSG_DEBUG DBG_OFF
#define SOCKETS_DEBUG DBG_OFF
#define ICMP_DEBUG DBG_OFF
#define INET_DEBUG DBG_OFF
#define IP_DEBUG DBG_OFF
#define IP_REASS_DEBUG DBG_OFF
#define RAW_DEBUG DBG_OFF
#define MEM_DEBUG DBG_OFF
#define MEMP_DEBUG DBG_OFF
#define SYS_DEBUG DBG_ON
#define TCP_DEBUG DBG_OFF
#define TCP_INPUT_DEBUG DBG_OFF
#define TCP_FR_DEBUG DBG_OFF
#define TCP_RTO_DEBUG DBG_OFF
#define TCP_REXMIT_DEBUG DBG_OFF
#define TCP_CWND_DEBUG DBG_OFF
#define TCP_WND_DEBUG DBG_OFF
#define TCP_OUTPUT_DEBUG DBG_OFF
#define TCP_RST_DEBUG DBG_OFF
#define TCP_QLEN_DEBUG DBG_OFF
#define UDP_DEBUG DBG_OFF
#define TCPIP_DEBUG DBG_OFF
#define PPP_DEBUG DBG_OFF
#define SLIP_DEBUG DBG_OFF
#define DHCP_DEBUG DBG_OFF
#define DBG_MIN_LEVEL DBG_LEVEL_WARNING
#endif /* __LWIPOPTS_H__ */
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