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New example project demonstrates how to use lwIP as a shared library
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kieranm
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86
proj/unixlib/Makefile
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86
proj/unixlib/Makefile
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#
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# Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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# OF SUCH DAMAGE.
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#
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# This file is part of the lwIP TCP/IP stack.
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#
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# Author: Adam Dunkels <adam@sics.se>
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#
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CCDEP=gcc
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CC=gcc
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CFLAGS=-g -Wall -fPIC -DIPv4 -DLWIP_DEBUG
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LWIPARCH=unix
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LWIPDIR=../../src
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CFLAGS:=$(CFLAGS) \
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-I$(LWIPDIR)/include -I$(LWIPDIR)/arch/$(LWIPARCH)/include -I$(LWIPDIR)/include/ipv4 \
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-Iapps -I.
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# COREFILES, CORE4FILES: The minimum set of files needed for lwIP.
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COREFILES=$(LWIPDIR)/core/mem.c $(LWIPDIR)/core/memp.c $(LWIPDIR)/core/netif.c \
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$(LWIPDIR)/core/pbuf.c $(LWIPDIR)/core/stats.c $(LWIPDIR)/core/sys.c \
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$(LWIPDIR)/core/tcp.c $(LWIPDIR)/core/tcp_in.c \
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$(LWIPDIR)/core/tcp_out.c $(LWIPDIR)/core/udp.c
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CORE4FILES=$(LWIPDIR)/core/ipv4/icmp.c $(LWIPDIR)/core/ipv4/ip.c \
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$(LWIPDIR)/core/inet.c $(LWIPDIR)/core/ipv4/ip_addr.c
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# APIFILES: The files which implement the sequential and socket APIs.
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APIFILES=$(LWIPDIR)/api/api_lib.c $(LWIPDIR)/api/api_msg.c $(LWIPDIR)/api/tcpip.c \
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$(LWIPDIR)/api/err.c $(LWIPDIR)/api/sockets.c
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# NETIFFILES: Files implementing various generic network interface functions.'
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NETIFFILES=$(LWIPDIR)/netif/loopif.c \
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$(LWIPDIR)/netif/tcpdump.c $(LWIPDIR)/netif/etharp.c
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# ARCHFILES: Archiecture specific files.
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ARCHFILES=$(wildcard $(LWIPDIR)/arch/$(LWIPARCH)/*.c $(LWIPDIR)/arch/$(LWIPARCH)/netif/*.c)
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# LWIPFILES: All the above.
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LWIPFILES=$(COREFILES) $(CORE4FILES) $(APIFILES) $(NETIFFILES) $(ARCHFILES)
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LWIPFILESW=$(wildcard $(LWIPFILES))
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LWIPOBJS=$(notdir $(LWIPFILESW:.c=.o))
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LWIPLIB=liblwip4$(LWIPARCH)lib.so
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%.o:
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$(CC) $(CFLAGS) -c $(<:.o=.c)
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all: $(LWIPLIB)
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.PHONY: all
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clean:
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rm -f *.o $(LWIPLIB) *.s .depend* *.core core
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depend dep: .depend
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include .depend
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$(LWIPLIB): $(LWIPOBJS) unixlib.o
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$(CC) -g -nostartfiles -shared -o $@ $^
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.depend: unixlib.c $(LWIPFILES)
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$(CCDEP) $(CFLAGS) -MM $^ > .depend || rm -f .depend
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31
proj/unixlib/README
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31
proj/unixlib/README
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This directory contains an example of how to compile lwIP as a self
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initialising shared library on Linux.
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Some brief instructions:
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* Compile the code:
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> make clean all
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This should produce liblwip4unixlib.so. This is the shared library.
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* Link an application against the shared library
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If you're using gcc you can do this by including -llwip4unixlib in
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your link command.
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* Run your application
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Ensure that LD_LIBRARY_PATH includes the directory that contains
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liblwip4unixlib.so (ie. this directory)
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If you are unsure about shared libraries and libraries on linux in
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general, you might find this HOWTO useful:
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<http://www.tldp.org/HOWTO/Program-Library-HOWTO/>
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Kieran Mansley, October 2002.
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171
proj/unixlib/lwipopts.h
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171
proj/unixlib/lwipopts.h
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/*
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* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef __LWIPOPTS_H__
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#define __LWIPOPTS_H__
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/* ---------- Memory options ---------- */
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/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
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lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
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byte alignment -> define MEM_ALIGNMENT to 2. */
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#define MEM_ALIGNMENT 1
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/* MEM_SIZE: the size of the heap memory. If the application will send
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a lot of data that needs to be copied, this should be set high. */
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#define MEM_SIZE 1600
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/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
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sends a lot of data out of ROM (or other static memory), this
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should be set high. */
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#define MEMP_NUM_PBUF 16
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/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
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per active UDP "connection". */
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#define MEMP_NUM_UDP_PCB 4
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/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
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connections. */
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#define MEMP_NUM_TCP_PCB 5
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/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
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connections. */
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#define MEMP_NUM_TCP_PCB_LISTEN 8
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/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
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segments. */
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#define MEMP_NUM_TCP_SEG 16
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/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
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timeouts. */
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#define MEMP_NUM_SYS_TIMEOUT 3
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/* The following four are used only with the sequential API and can be
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set to 0 if the application only will use the raw API. */
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/* MEMP_NUM_NETBUF: the number of struct netbufs. */
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#define MEMP_NUM_NETBUF 2
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/* MEMP_NUM_NETCONN: the number of struct netconns. */
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#define MEMP_NUM_NETCONN 4
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/* MEMP_NUM_APIMSG: the number of struct api_msg, used for
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communication between the TCP/IP stack and the sequential
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programs. */
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#define MEMP_NUM_API_MSG 8
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/* MEMP_NUM_TCPIPMSG: the number of struct tcpip_msg, which is used
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for sequential API communication and incoming packets. Used in
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src/api/tcpip.c. */
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#define MEMP_NUM_TCPIP_MSG 8
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/* These two control is reclaimer functions should be compiled
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in. Should always be turned on (1). */
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#define MEM_RECLAIM 1
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#define MEMP_RECLAIM 1
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/* ---------- Pbuf options ---------- */
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/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
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#define PBUF_POOL_SIZE 6
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/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
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#define PBUF_POOL_BUFSIZE 128
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/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
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link level header. */
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#define PBUF_LINK_HLEN 16
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/* ---------- TCP options ---------- */
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#define LWIP_TCP 1
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#define TCP_TTL 255
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/* Controls if TCP should queue segments that arrive out of
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order. Define to 0 if your device is low on memory. */
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#define TCP_QUEUE_OOSEQ 1
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/* TCP Maximum segment size. */
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#define TCP_MSS 128
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/* TCP sender buffer space (bytes). */
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#define TCP_SND_BUF 256
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/* TCP sender buffer space (pbufs). This must be at least = 2 *
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TCP_SND_BUF/TCP_MSS for things to work. */
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#define TCP_SND_QUEUELEN 4 * TCP_SND_BUF/TCP_MSS
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/* TCP receive window. */
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#define TCP_WND 1024
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/* Maximum number of retransmissions of data segments. */
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#define TCP_MAXRTX 12
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/* Maximum number of retransmissions of SYN segments. */
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#define TCP_SYNMAXRTX 4
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/* ---------- ARP options ---------- */
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#define ARP_TABLE_SIZE 10
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/* ---------- IP options ---------- */
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/* Define IP_FORWARD to 1 if you wish to have the ability to forward
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IP packets across network interfaces. If you are going to run lwIP
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on a device with only one network interface, define this to 0. */
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#define IP_FORWARD 1
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/* If defined to 1, IP options are allowed (but not parsed). If
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defined to 0, all packets with IP options are dropped. */
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#define IP_OPTIONS 1
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/* ---------- ICMP options ---------- */
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#define ICMP_TTL 255
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/* ---------- DHCP options ---------- */
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/* Define LWIP_DHCP to 1 if you want DHCP configuration of
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interfaces. DHCP is not implemented in lwIP 0.5.1, however, so
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turning this on does currently not work. */
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#define LWIP_DHCP 0
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/* 1 if you want to do an ARP check on the offered address
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(recommended). */
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#define DHCP_DOES_ARP_CHECK 1
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/* ---------- UDP options ---------- */
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#define LWIP_UDP 1
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#define UDP_TTL 255
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/* ---------- Statistics options ---------- */
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#define STATS
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#ifdef STATS
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#define LINK_STATS
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#define IP_STATS
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#define ICMP_STATS
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#define UDP_STATS
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#define TCP_STATS
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#define MEM_STATS
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#define MEMP_STATS
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#define PBUF_STATS
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#define SYS_STATS
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#endif /* STATS */
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#endif /* __LWIPOPTS_H__ */
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91
proj/unixlib/unixlib.c
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91
proj/unixlib/unixlib.c
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/*
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* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
|
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* this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright notice,
|
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* this list of conditions and the following disclaimer in the documentation
|
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
|
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* Author: Kieran Mansley <kjm25@cam.ac.uk>
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*
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* $Id: unixlib.c,v 1.1 2002/10/25 15:31:01 kieranm Exp $
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*/
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/*-----------------------------------------------------------------------------------*/
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/* unixlib.c
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*
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* The initialisation functions for a shared library
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*
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* You may need to configure this file to your own needs - it is only an example
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* of how lwIP can be used as a self initialising shared library.
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*
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* In particular, you should change the gateway, ipaddr, and netmask to be the values
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* you would like the stack to use.
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*/
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/*-----------------------------------------------------------------------------------*/
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#include "lwip/sys.h"
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#include "lwip/mem.h"
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#include "lwip/memp.h"
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#include "lwip/pbuf.h"
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#include "lwip/tcp.h"
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#include "lwip/tcpip.h"
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#include "lwip/netif.h"
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#include "lwip/stats.h"
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#include "netif/tapif.h"
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static void
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tcpip_init_done(void *arg)
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{
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sys_sem_t *sem;
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sem = arg;
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sys_sem_signal(*sem);
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}
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void _init(void){
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struct ip_addr ipaddr, netmask, gateway;
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sys_sem_t sem;
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stats_init();
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sys_init();
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mem_init();
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memp_init();
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pbuf_init();
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sem = sys_sem_new(0);
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tcpip_init(tcpip_init_done, &sem);
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sys_sem_wait(sem);
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sys_sem_free(sem);
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netif_init();
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/*
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CHANGE THESE to suit your own network configuration:
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*/
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IP4_ADDR(&gateway, 192,168,1,1);
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IP4_ADDR(&ipaddr, 192,168,1,1);
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IP4_ADDR(&netmask, 255,255,255,0);
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netif_set_default(netif_add(&ipaddr, &netmask, &gateway, tapif_init,
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tcpip_input));
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}
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void _fini(void){
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}
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