Andrew,
> Moving forward, how does your project use lwIP?
I am in simplest form, taking in SPI data and sending it out Ethernet. I can
get an SPI packet of 50 bytes approximately every 3ms though I am throughput
testing at 8ms currently.
> More specifically:
> Are you running an RTOS? If so which?
No RTOS.
> How does your application call tcp_write? I.e. from a thread or other
> context?
It is not called from an interrupt. I check while looping through main if any
packets have been added to a buffer and then send out that packet using
tcp_write().
> Can you include your lwipopts.h in this post?
Should be attached. I could use some help verifying I have it configured
correctly for my application with respect to the memory requirements at some
point too.
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//*****************************************************************************
//
// lwipopts.h - Configuration file for lwIP
//
// Copyright (c) 2009-2010 Texas Instruments Incorporated. All rights reserved.
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 5961 of the EK-LM3S9B92 Firmware Package.
//
//*****************************************************************************
//
// NOTE: This file has been derived from the lwIP/src/include/lwip/opt.h
// header file.
//
// For additional details, refer to the original "opt.h" file, and lwIP
// documentation.
//
//*****************************************************************************
#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__
//*****************************************************************************
//
// ---------- Stellaris / lwIP Port Options ----------
//
//*****************************************************************************
#define HOST_TMR_INTERVAL 50 // default is 0
//#define DHCP_EXPIRE_TIMER_MSECS (60 * 1000)
//#define INCLUDE_HTTPD_SSI
//#define INCLUDE_HTTPD_CGI
//#define DYNAMIC_HTTP_HEADERS
//#define INCLUDE_HTTPD_DEBUG
//*****************************************************************************
//
// ---------- Platform specific locking ----------
//
//*****************************************************************************
#define SYS_LIGHTWEIGHT_PROT 1 // default is 0
#define NO_SYS 1 // default is 0
//#define MEMCPY(dst,src,len) memcpy(dst,src,len)
//#define SMEMCPY(dst,src,len) memcpy(dst,src,len)
//*****************************************************************************
//
// ---------- Memory options ----------
//
//*****************************************************************************
//#define MEM_LIBC_MALLOC 0
#define MEM_ALIGNMENT 4 // default is 1
#define MEM_SIZE (22 * 1024) // default is 1600, was 16K
//#define MEMP_OVERFLOW_CHECK 0
//#define MEMP_SANITY_CHECK 0
//#define MEM_USE_POOLS 0
//#define MEMP_USE_CUSTOM_POOLS 0
//*****************************************************************************
//
// ---------- Internal Memory Pool Sizes ----------
//
//*****************************************************************************
#define MEMP_NUM_PBUF 40 // Default 16, was 16
//#define MEMP_NUM_RAW_PCB 4
//#define MEMP_NUM_UDP_PCB 4
#define MEMP_NUM_TCP_PCB 1 // Default 5, was 12
//#define MEMP_NUM_TCP_PCB_LISTEN 8
#define MEMP_NUM_TCP_SEG 160 // SDefault 16
//#define MEMP_NUM_REASSDATA 5
//#define MEMP_NUM_ARP_QUEUE 30
//#define MEMP_NUM_IGMP_GROUP 8
//#define MEMP_NUM_SYS_TIMEOUT 3
//#define MEMP_NUM_NETBUF 2
//#define MEMP_NUM_NETCONN 4
//#define MEMP_NUM_TCPIP_MSG_API 8
//#define MEMP_NUM_TCPIP_MSG_INPKT 8
//#define PBUF_POOL_SIZE 24 // Default 16, was 36
//*****************************************************************************
//
// ---------- ARP options ----------
//
//*****************************************************************************
//#define LWIP_ARP 1
//#define ARP_TABLE_SIZE 10
//#define ARP_QUEUEING 1
//#define ETHARP_TRUST_IP_MAC 1
//*****************************************************************************
//
// ---------- IP options ----------
//
//*****************************************************************************
//#define IP_FORWARD 0
//#define IP_OPTIONS_ALLOWED 1
#define IP_REASSEMBLY 0 // default is 1
#define IP_FRAG 0 // default is 1
//#define IP_REASS_MAXAGE 3
//#define IP_REASS_MAX_PBUFS 10
//#define IP_FRAG_USES_STATIC_BUF 1
//#define IP_FRAG_MAX_MTU 1500
//#define IP_DEFAULT_TTL 255
//*****************************************************************************
//
// ---------- ICMP options ----------
//
//*****************************************************************************
//#define LWIP_ICMP 1
//#define ICMP_TTL (IP_DEFAULT_TTL)
//*****************************************************************************
//
// ---------- RAW options ----------
//
//*****************************************************************************
//#define LWIP_RAW 1
//#define RAW_TTL (IP_DEFAULT_TTL)
//*****************************************************************************
//
// ---------- DHCP options ----------
//
//*****************************************************************************
#define LWIP_DHCP 1 // default is 0
//#define DHCP_DOES_ARP_CHECK ((LWIP_DHCP) && (LWIP_ARP))
//*****************************************************************************
//
// ---------- UPNP options ----------
//
//*****************************************************************************
//#define LWIP_UPNP 0
//*****************************************************************************
//
// ---------- PTPD options ----------
//
//*****************************************************************************
//#define LWIP_PTPD 0
//*****************************************************************************
//
// ---------- AUTOIP options ----------
//
//*****************************************************************************
#define LWIP_AUTOIP 1 // default is 0
//#define LWIP_DHCP_AUTOIP_COOP ((LWIP_DHCP) && (LWIP_AUTOIP))
// default is 0
//#define LWIP_DHCP_AUTOIP_COOP_TRIES 5 // default is 9
//*****************************************************************************
//
// ---------- SNMP options ----------
//
//*****************************************************************************
//#define LWIP_SNMP 0
//#define SNMP_CONCURRENT_REQUESTS 1
//#define SNMP_TRAP_DESTINATIONS 1
//#define SNMP_PRIVATE_MIB 0
//#define SNMP_SAFE_REQUESTS 1
//*****************************************************************************
//
// ---------- IGMP options ----------
//
//*****************************************************************************
//#define LWIP_IGMP 0
//*****************************************************************************
//
// ---------- DNS options -----------
//
//*****************************************************************************
//#define LWIP_DNS 0
//#define DNS_TABLE_SIZE 4
//#define DNS_MAX_NAME_LENGTH 256
//#define DNS_MAX_SERVERS 2
//#define DNS_DOES_NAME_CHECK 1
//#define DNS_USES_STATIC_BUF 1
//#define DNS_MSG_SIZE 512
//*****************************************************************************
//
// ---------- UDP options ----------
//
//*****************************************************************************
//#define LWIP_UDP 1
//#define LWIP_UDPLITE 0
//#define UDP_TTL (IP_DEFAULT_TTL)
//*****************************************************************************
//
// ---------- TCP options ----------
//
//*****************************************************************************
//#define LWIP_TCP 1
//#define TCP_TTL (IP_DEFAULT_TTL)
#define TCP_WND 2048 // default is 2048
//#define TCP_MAXRTX 12
//#define TCP_SYNMAXRTX 6
//#define TCP_QUEUE_OOSEQ 1
#define TCP_MSS 1050 // default is 128
//#define TCP_CALCULATE_EFF_SEND_MSS 1
#define TCP_SND_BUF (8 * TCP_MSS)
// default is 256, was 6 *
#define TCP_SND_QUEUELEN 128//(4 * (TCP_SND_BUF/TCP_MSS))
//#define TCP_SNDLOWAT (TCP_SND_BUF/2)
//#define TCP_LISTEN_BACKLOG 0
//#define TCP_DEFAULT_LISTEN_BACKLOG 0xff
//*****************************************************************************
//
// ---------- API options ----------
//
//*****************************************************************************
//#define LWIP_EVENT_API 0
//#define LWIP_CALLBACK_API 1
//*****************************************************************************
//
// ---------- Pbuf options ----------
//
//*****************************************************************************
#define PBUF_LINK_HLEN 16 // default is 14
#define PBUF_POOL_BUFSIZE 256
// default is
LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN)
#define ETH_PAD_SIZE 2 // default is 0
//*****************************************************************************
//
// ---------- Network Interfaces options ----------
//
//*****************************************************************************
//#define LWIP_NETIF_HOSTNAME 0
//#define LWIP_NETIF_API 0
//#define LWIP_NETIF_STATUS_CALLBACK 0
//#define LWIP_NETIF_LINK_CALLBACK 0
//#define LWIP_NETIF_HWADDRHINT 0
//*****************************************************************************
//
// ---------- LOOPIF options ----------
//
//*****************************************************************************
//#define LWIP_HAVE_LOOPIF 0
//#define LWIP_LOOPIF_MULTITHREADING 1
//*****************************************************************************
//
// ---------- Thread options ----------
//
//*****************************************************************************
//#define TCPIP_THREAD_NAME "tcpip_thread"
//#define TCPIP_THREAD_STACKSIZE 0
//#define TCPIP_THREAD_PRIO 1
//#define TCPIP_MBOX_SIZE 0
//#define SLIPIF_THREAD_NAME "slipif_loop"
//#define SLIPIF_THREAD_STACKSIZE 0
//#define SLIPIF_THREAD_PRIO 1
//#define PPP_THREAD_NAME "pppMain"
//#define PPP_THREAD_STACKSIZE 0
//#define PPP_THREAD_PRIO 1
//#define DEFAULT_THREAD_NAME "lwIP"
//#define DEFAULT_THREAD_STACKSIZE 0
//#define DEFAULT_THREAD_PRIO 1
//#define DEFAULT_RAW_RECVMBOX_SIZE 0
//#define DEFAULT_UDP_RECVMBOX_SIZE 0
//#define DEFAULT_TCP_RECVMBOX_SIZE 0
//#define DEFAULT_ACCEPTMBOX_SIZE 0
//*****************************************************************************
//
// ---------- Sequential layer options ----------
//
//*****************************************************************************
//#define LWIP_TCPIP_CORE_LOCKING 0
#define LWIP_NETCONN 0 // default is 1
//*****************************************************************************
//
// ---------- Socket Options ----------
//
//*****************************************************************************
#define LWIP_SOCKET 0 // default is 1
//#define LWIP_COMPAT_SOCKETS 1
//#define LWIP_POSIX_SOCKETS_IO_NAMES 1
//#define LWIP_TCP_KEEPALIVE 0
//#define LWIP_SO_RCVTIMEO 0
//#define LWIP_SO_RCVBUF 0
//#define SO_REUSE 0
//*****************************************************************************
//
// ---------- Statistics options ----------
//
//*****************************************************************************
//#define LWIP_STATS 1
//#define LWIP_STATS_DISPLAY 1
//#define LINK_STATS 1
//#define ETHARP_STATS (LWIP_ARP)
//#define IP_STATS 1
//#define IPFRAG_STATS (IP_REASSEMBLY || IP_FRAG)
//#define ICMP_STATS 1
//#define IGMP_STATS (LWIP_IGMP)
//#define UDP_STATS (LWIP_UDP)
//#define TCP_STATS (LWIP_TCP)
//#define MEM_STATS 1
//#define MEMP_STATS 1
//#define SYS_STATS 1
//*****************************************************************************
//
// ---------- PPP options ----------
//
//*****************************************************************************
//#define PPP_SUPPORT 0
//#define PPPOE_SUPPORT 0
//#define PPPOS_SUPPORT PPP_SUPPORT
#if PPP_SUPPORT
//#define NUM_PPP 1
//#define PAP_SUPPORT 0
//#define CHAP_SUPPORT 0
//#define MSCHAP_SUPPORT 0
//#define CBCP_SUPPORT 0
//#define CCP_SUPPORT 0
//#define VJ_SUPPORT 0
//#define MD5_SUPPORT 0
//#define FSM_DEFTIMEOUT 6
//#define FSM_DEFMAXTERMREQS 2
//#define FSM_DEFMAXCONFREQS 10
//#define FSM_DEFMAXNAKLOOPS 5
//#define UPAP_DEFTIMEOUT 6
//#define UPAP_DEFREQTIME 30
//#define CHAP_DEFTIMEOUT 6
//#define CHAP_DEFTRANSMITS 10
//#define LCP_ECHOINTERVAL 0
//#define LCP_MAXECHOFAILS 3
//#define PPP_MAXIDLEFLAG 100
//#define PPP_MAXMTU 1500
//#define PPP_DEFMRU 296
#endif
//*****************************************************************************
//
// ---------- checksum options ----------
//
//*****************************************************************************
//#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 ----------
//
//*****************************************************************************
#if 1
#define U8_F "c"
#define S8_F "c"
#define X8_F "x"
#define U16_F "u"
#define S16_F "d"
#define X16_F "x"
#define U32_F "u"
#define S32_F "d"
#define X32_F "x"
extern void UARTprintf(const char *pcString, ...);
#define LWIP_PLATFORM_DIAG(msg) {UARTprintf msg;}
#define LWIP_PLATFORM_ASSERT(msg) {UARTprintf (msg);UARTprintf("\n");}
#define LWIP_DEBUG
#endif
//#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_OFF
#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_OFF
//#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_WARNING
//#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_SERIOUS
//#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_SEVERE
//#define LWIP_DBG_TYPES_ON LWIP_DBG_ON
#define LWIP_DBG_TYPES_ON
(LWIP_DBG_ON|LWIP_DBG_TRACE|LWIP_DBG_STATE|LWIP_DBG_FRESH)
//#define ETHARP_DEBUG LWIP_DBG_ON // default is OFF
//#define NETIF_DEBUG LWIP_DBG_ON // default is OFF
#define PBUF_DEBUG LWIP_DBG_OFF
//#define API_LIB_DEBUG LWIP_DBG_OFF
//#define API_MSG_DEBUG LWIP_DBG_OFF
//#define SOCKETS_DEBUG LWIP_DBG_OFF
//#define ICMP_DEBUG LWIP_DBG_OFF
//#define IGMP_DEBUG LWIP_DBG_OFF
//#define INET_DEBUG LWIP_DBG_OFF
//#define IP_DEBUG LWIP_DBG_ON // default is OFF
//#define IP_REASS_DEBUG LWIP_DBG_OFF
//#define RAW_DEBUG LWIP_DBG_OFF
#define MEM_DEBUG LWIP_DBG_OFF
//#define MEMP_DEBUG LWIP_DBG_OFF
//#define SYS_DEBUG LWIP_DBG_OFF
//#define TCP_DEBUG LWIP_DBG_OFF
//#define TCP_INPUT_DEBUG LWIP_DBG_OFF
//#define TCP_FR_DEBUG LWIP_DBG_OFF
//#define TCP_RTO_DEBUG LWIP_DBG_OFF
//#define TCP_CWND_DEBUG LWIP_DBG_OFF
//#define TCP_WND_DEBUG LWIP_DBG_OFF
//#define TCP_OUTPUT_DEBUG LWIP_DBG_OFF
//#define TCP_RST_DEBUG LWIP_DBG_OFF
#define TCP_QLEN_DEBUG LWIP_DBG_OFF
//#define UDP_DEBUG LWIP_DBG_ON // default is OFF
//#define TCPIP_DEBUG LWIP_DBG_OFF
//#define PPP_DEBUG LWIP_DBG_OFF
//#define SLIP_DEBUG LWIP_DBG_OFF
//#define DHCP_DEBUG LWIP_DBG_ON // default is OFF
//#define AUTOIP_DEBUG LWIP_DBG_OFF
//#define SNMP_MSG_DEBUG LWIP_DBG_OFF
//#define SNMP_MIB_DEBUG LWIP_DBG_OFF
//#define DNS_DEBUG LWIP_DBG_OFF
#endif /* __LWIPOPTS_H__ */
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