added lwip unix port lib files

ext/contrib/README.md

@@ -0,0 +1,15 @@
+You are reading this file because you want to build a new copy of the LwIP library for
+use in ZeroTier.
+
+Subdirectories:
+
+ ports/ -- contains ports for various architectures (for our purposes, unix)
+
+In order for the Network Containers feature to work in ZeroTier, a copy of the LwIP libary
+is needed since we dynamically load it into memory. You can build a new copy of the libary 
+by going to /contrib/ports/unix/proj/lib and running make.
+
+This will generate: liblwip.so
+
+You can enable LwIP debug traces by adding the flag -DLWIP_DEBUG
+See additional debug info here: http://lwip.wikia.com/wiki/Debugging_lwIP 

ext/contrib/ports/unix/proj/lib/Makefile

@@ -0,0 +1,106 @@
+#
+# Copyright (c) 2001, 2002 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>
+#
+
+CONTRIBDIR=../../../..
+LWIPARCH=$(CONTRIBDIR)/ports/unix
+
+#Set this to where you have the lwip core module checked out from CVS
+#default assumes it's a dir named lwip at the same level as the contrib module
+LWIPDIR=$(CONTRIBDIR)/../lwip/src
+
+
+CCDEP=gcc
+CC=gcc
+CFLAGS=-g -Wall -DIPv4 -fPIC
+
+CFLAGS:=$(CFLAGS) \
+	-I$(LWIPDIR)/include -I$(LWIPARCH)/include -I$(LWIPDIR)/include/ipv4 \
+	-I$(LWIPDIR) -I.
+
+
+# COREFILES, CORE4FILES: The minimum set of files needed for lwIP.
+COREFILES=$(LWIPDIR)/core/mem.c $(LWIPDIR)/core/memp.c $(LWIPDIR)/core/netif.c \
+	$(LWIPDIR)/core/pbuf.c $(LWIPDIR)/core/raw.c $(LWIPDIR)/core/stats.c \
+	$(LWIPDIR)/core/sys.c $(LWIPDIR)/core/tcp.c $(LWIPDIR)/core/tcp_in.c \
+	$(LWIPDIR)/core/tcp_out.c $(LWIPDIR)/core/udp.c $(LWIPDIR)/core/dhcp.c \
+	$(LWIPDIR)/core/init.c $(LWIPDIR)/core/timers.c $(LWIPDIR)/core/def.c
+CORE4FILES=$(wildcard $(LWIPDIR)/core/ipv4/*.c) $(LWIPDIR)/core/ipv4/inet.c \
+	$(LWIPDIR)/core/ipv4/inet_chksum.c
+
+# SNMPFILES: Extra SNMPv1 agent
+SNMPFILES=$(LWIPDIR)/core/snmp/asn1_dec.c $(LWIPDIR)/core/snmp/asn1_enc.c \
+	$(LWIPDIR)/core/snmp/mib2.c $(LWIPDIR)/core/snmp/mib_structs.c \
+	$(LWIPDIR)/core/snmp/msg_in.c $(LWIPDIR)/core/snmp/msg_out.c
+
+# APIFILES: The files which implement the sequential and socket APIs.
+APIFILES=$(LWIPDIR)/api/api_lib.c $(LWIPDIR)/api/api_msg.c $(LWIPDIR)/api/tcpip.c \
+	$(LWIPDIR)/api/err.c $(LWIPDIR)/api/sockets.c $(LWIPDIR)/api/netbuf.c $(LWIPDIR)/api/netdb.c
+
+# NETIFFILES: Files implementing various generic network interface functions.'
+NETIFFILES=$(LWIPDIR)/netif/etharp.c $(LWIPDIR)/netif/slipif.c
+
+# NETIFFILES: Add PPP netif
+NETIFFILES+=$(LWIPDIR)/netif/ppp/auth.c $(LWIPDIR)/netif/ppp/chap.c \
+	$(LWIPDIR)/netif/ppp/chpms.c $(LWIPDIR)/netif/ppp/fsm.c \
+	$(LWIPDIR)/netif/ppp/ipcp.c $(LWIPDIR)/netif/ppp/lcp.c \
+	$(LWIPDIR)/netif/ppp/magic.c $(LWIPDIR)/netif/ppp/md5.c \
+	$(LWIPDIR)/netif/ppp/pap.c $(LWIPDIR)/netif/ppp/ppp.c \
+	$(LWIPDIR)/netif/ppp/randm.c $(LWIPDIR)/netif/ppp/vj.c
+
+# ARCHFILES: Architecture specific files.
+ARCHFILES=$(wildcard $(LWIPARCH)/*.c $(LWIPARCH)tapif.c $(LWIPARCH)/netif/list.c $(LWIPARCH)/netif/tcpdump.c)
+
+
+# LWIPFILES: All the above.
+LWIPFILES=$(COREFILES) $(CORE4FILES) $(SNMPFILES) $(APIFILES) $(NETIFFILES) $(ARCHFILES)
+LWIPFILESW=$(wildcard $(LWIPFILES))
+LWIPOBJS=$(notdir $(LWIPFILESW:.c=.o))
+
+LWIPLIB=liblwip.so
+
+%.o:
+	$(CC) $(CFLAGS) -c $(<:.o=.c)
+
+all: $(LWIPLIB)
+.PHONY: all
+
+clean:
+	rm -f *.o $(LWIPLIB) *.s .depend* *.core core
+
+depend dep: .depend
+
+include .depend
+
+$(LWIPLIB): $(LWIPOBJS) unixlib.o
+	$(CC) -g -nostartfiles -shared -o $@ $^
+
+.depend: unixlib.c $(LWIPFILES)
+	$(CCDEP) $(CFLAGS) -MM $^ > .depend || rm -f .depend

ext/contrib/ports/unix/proj/lib/README

@@ -0,0 +1,31 @@
+This directory contains an example of how to compile lwIP as a self
+initialising shared library on Linux.
+
+Some brief instructions:
+ 
+* Compile the code:
+
+ > make clean all
+
+ This should produce liblwip4unixlib.so.  This is the shared library.
+
+* Link an application against the shared library
+
+ If you're using gcc you can do this by including -llwip4unixlib in
+your link command. 
+
+* Run your application
+ 
+ Ensure that LD_LIBRARY_PATH includes the directory that contains
+liblwip4unixlib.so (ie. this directory)
+
+
+
+If you are unsure about shared libraries and libraries on linux in
+general, you might find this HOWTO useful:
+
+<http://www.tldp.org/HOWTO/Program-Library-HOWTO/>
+
+
+
+Kieran Mansley, October 2002.

ext/contrib/ports/unix/proj/lib/lwipopts.h

@@ -0,0 +1,468 @@
+/**
+ * @file
+ *
+ * lwIP Options Configuration
+ */
+
+/*
+ * 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__
+
+/*
+ * Include user defined options first. Anything not defined in these files
+ * will be set to standard values. Override anything you dont like!
+ */
+#include "lwipopts.h"
+#include "lwip/debug.h"
+
+
+//#define LWIP_DEBUG 0
+//#define TCP_DEBUG LWIP_DBG_OFF
+
+/*
+
+#define LWIP_MALLOC_MEMPOOL 1
+*/
+
+/*
+#define LWIP_CHECKSUM_ON_COPY 1
+
+#define TCP_OVERSIZE TCP_MSS
+*/
+
+#ifndef TCP_SND_QUEUELEN
+#define TCP_SND_QUEUELEN                ((4 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
+#endif
+
+//#define TCP_WND
+
+
+//#define PBUF_POOL_BUFSIZE 2048
+
+/*------------------------------------------------------------------------------
+---------------------------------- Timers --------------------------------------
+------------------------------------------------------------------------------*/
+
+/* these are originally defined in tcp_impl.h */
+#ifndef TCP_TMR_INTERVAL
+/* The TCP timer interval in milliseconds. */
+#define TCP_TMR_INTERVAL       25
+#endif /* TCP_TMR_INTERVAL */
+
+#ifndef TCP_FAST_INTERVAL
+/* the fine grained timeout in milliseconds */
+#define TCP_FAST_INTERVAL      TCP_TMR_INTERVAL
+#endif /* TCP_FAST_INTERVAL */
+
+#ifndef TCP_SLOW_INTERVALs
+/* the coarse grained timeout in milliseconds */
+#define TCP_SLOW_INTERVAL      (2*TCP_TMR_INTERVAL)
+#endif /* TCP_SLOW_INTERVAL */
+
+
+/*------------------------------------------------------------------------------
+--------------------------- Platform specific locking -------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * 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
+
+/**
+ * NO_SYS==1: Provides VERY minimal functionality. Otherwise,
+ * use lwIP facilities.
+ */
+
+/* set to 1 so we have no thread behaviour */
+#define NO_SYS                          1
+
+/* set to 1 so we can use our own timers */
+#define NO_SYS_NO_TIMERS                1
+
+
+/*------------------------------------------------------------------------------
+-------------------------------- Memory options --------------------------------
+------------------------------------------------------------------------------*/
+
+
+#define LWIP_CHKSUM_ALGORITHM 2
+
+
+/**
+ * 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                   1
+
+/**
+ * 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                        1024 * 1024 * 64
+#define TCP_SND_BUF                     1024 * 63
+
+
+/*------------------------------------------------------------------------------
+-------------------------- Internal Memory Pool Sizes --------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * MEMP_NUM_PBUF: the number of memp struct pbufs (used for PBUF_ROM and PBUF_REF).
+ * If the application sends a lot of data out of ROM (or other static memory),
+ * this should be set high.
+ */
+#define MEMP_NUM_PBUF                   256
+
+/**
+ * MEMP_NUM_RAW_PCB: Number of raw connection PCBs
+ * (requires the LWIP_RAW option)
+ */
+#define MEMP_NUM_RAW_PCB                32
+
+/**
+ * MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
+ * per active UDP "connection".
+ * (requires the LWIP_UDP option)
+ */
+#define MEMP_NUM_UDP_PCB                4
+
+/**
+ * MEMP_NUM_TCP_PCB: the number of simulatenously active TCP connections.
+ * (requires the LWIP_TCP option)
+ */
+#define MEMP_NUM_TCP_PCB                128
+
+/**
+ * MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections.
+ * (requires the LWIP_TCP option)
+ */
+#define MEMP_NUM_TCP_PCB_LISTEN         128
+
+/**
+ * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
+ * (requires the LWIP_TCP option)
+ */
+#define MEMP_NUM_TCP_SEG                TCP_SND_QUEUELEN
+
+/**
+ * MEMP_NUM_REASSDATA: the number of simultaneously IP packets queued for
+ * reassembly (whole packets, not fragments!)
+ */
+#define MEMP_NUM_REASSDATA              1
+
+/**
+ * MEMP_NUM_ARP_QUEUE: the number of simulateously queued outgoing
+ * packets (pbufs) that are waiting for an ARP request (to resolve
+ * their destination address) to finish.
+ * (requires the ARP_QUEUEING option)
+ */
+#define MEMP_NUM_ARP_QUEUE              2
+
+/**
+ * MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts.
+ * (requires NO_SYS==0)
+ */
+#define MEMP_NUM_SYS_TIMEOUT            3
+
+/**
+ * MEMP_NUM_NETBUF: the number of struct netbufs.
+ * (only needed if you use the sequential API, like api_lib.c)
+ */
+#define MEMP_NUM_NETBUF                 2
+
+/**
+ * MEMP_NUM_NETCONN: the number of struct netconns.
+ * (only needed if you use the sequential API, like api_lib.c)
+ */
+#define MEMP_NUM_NETCONN                4
+
+/**
+ * MEMP_NUM_TCPIP_MSG_API: the number of struct tcpip_msg, which are used
+ * for callback/timeout API communication.
+ * (only needed if you use tcpip.c)
+ */
+#define MEMP_NUM_TCPIP_MSG_API          8
+
+/**
+ * MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used
+ * for incoming packets.
+ * (only needed if you use tcpip.c)
+ */
+#define MEMP_NUM_TCPIP_MSG_INPKT        8
+
+/**
+ * PBUF_POOL_SIZE: the number of buffers in the pbuf pool.
+ */
+#define PBUF_POOL_SIZE                  128 /* was 32 */
+
+
+/*------------------------------------------------------------------------------
+----------------------------------- ARP options --------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_ARP==1: Enable ARP functionality.
+ */
+#define LWIP_ARP                        1
+
+
+/*------------------------------------------------------------------------------
+------------------------------------ IP options---------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * IP_FORWARD==1: Enables 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
+
+/**
+ * IP_OPTIONS: Defines the behavior for IP options.
+ *      IP_OPTIONS_ALLOWED==0: All packets with IP options are dropped.
+ *      IP_OPTIONS_ALLOWED==1: IP options are allowed (but not parsed).
+ */
+#define IP_OPTIONS_ALLOWED              1
+
+/**
+ * IP_REASSEMBLY==1: Reassemble incoming fragmented IP packets. Note that
+ * this option does not affect outgoing packet sizes, which can be controlled
+ * via IP_FRAG.
+ */
+#define IP_REASSEMBLY                   1
+
+/**
+ * IP_FRAG==1: Fragment outgoing IP packets if their size exceeds MTU. Note
+ * that this option does not affect incoming packet sizes, which can be
+ * controlled via IP_REASSEMBLY.
+ */
+#define IP_FRAG                         1
+
+/**
+ * IP_REASS_MAXAGE: Maximum time (in multiples of IP_TMR_INTERVAL - so seconds, normally)
+ * a fragmented IP packet waits for all fragments to arrive. If not all fragments arrived
+ * in this time, the whole packet is discarded.
+ */
+#define IP_REASS_MAXAGE                 3
+
+/**
+ * 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!
+ */
+#define IP_REASS_MAX_PBUFS              4
+
+/**
+ * IP_FRAG_USES_STATIC_BUF==1: Use a static MTU-sized buffer for IP
+ * fragmentation. Otherwise pbufs are allocated and reference the original
+    * packet data to be fragmented.
+*/
+#define IP_FRAG_USES_STATIC_BUF         0
+
+/**
+ * IP_DEFAULT_TTL: Default value for Time-To-Live used by transport layers.
+ */
+#define IP_DEFAULT_TTL                  255
+
+
+/*------------------------------------------------------------------------------
+------------------------------- ICMP Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_ICMP==1: Enable ICMP module inside the IP stack.
+ * Be careful, disable that make your product non-compliant to RFC1122
+ */
+#define LWIP_ICMP                       1
+
+
+/*------------------------------------------------------------------------------
+------------------------------- RAW Options ------------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
+ */
+#define LWIP_RAW                        1
+
+
+/*------------------------------------------------------------------------------
+------------------------------- DHCP Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_DHCP==1: Enable DHCP module.
+ */
+#define LWIP_DHCP                       0
+
+
+/*------------------------------------------------------------------------------
+------------------------------ AUTOIP Options ----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_AUTOIP==1: Enable AUTOIP module.
+ */
+#define LWIP_AUTOIP                     0
+
+
+/*------------------------------------------------------------------------------
+------------------------------- SNMP Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_SNMP==1: Turn on SNMP module. UDP must be available for SNMP
+ * transport.
+ */
+#define LWIP_SNMP                       0
+
+
+/*------------------------------------------------------------------------------
+------------------------------- IGMP Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_IGMP==1: Turn on IGMP module.
+ */
+#define LWIP_IGMP                       0
+
+
+/*------------------------------------------------------------------------------
+-------------------------------- DNS Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_DNS==1: Turn on DNS module. UDP must be available for DNS
+ * transport.
+ */
+#define LWIP_DNS                        0
+
+
+/*------------------------------------------------------------------------------
+-------------------------------- UDP Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_UDP==1: Turn on UDP.
+ */
+#define LWIP_UDP                        1
+
+
+/*------------------------------------------------------------------------------
+-------------------------------- TCP Options -----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_TCP==1: Turn on TCP.
+ */
+#define LWIP_TCP                        1
+
+#define LWIP_LISTEN_BACKLOG             0
+
+
+/*------------------------------------------------------------------------------
+-------------------------------- Pbuf Options ----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * PBUF_LINK_HLEN: the number of bytes that should be allocated for a
+ * link level header. The default is 14, the standard value for
+ * Ethernet.
+ */
+#define PBUF_LINK_HLEN                  16
+
+/**
+ * PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. The default is
+ * designed to accomodate single full size TCP frame in one pbuf, including
+ * TCP_MSS, IP header, and link header.
+*
+ */
+#define PBUF_POOL_BUFSIZE               LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN)
+
+
+/*------------------------------------------------------------------------------
+--------------------------------- LOOPIF Options -------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1) and loopif.c
+ */
+#define LWIP_HAVE_LOOPIF                0
+
+
+/*------------------------------------------------------------------------------
+---------------------------- 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
+
+
+/*------------------------------------------------------------------------------
+------------------------------ Statistics Options ------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * LWIP_STATS==1: Enable statistics collection in lwip_stats.
+ */
+#define LWIP_STATS                      1
+
+/*------------------------------------------------------------------------------
+--------------------------------- PPP Options ----------------------------------
+------------------------------------------------------------------------------*/
+
+/**
+ * PPP_SUPPORT==1: Enable PPP.
+ */
+#define PPP_SUPPORT                     0
+
+
+/* Misc */
+
+#endif /* __LWIPOPTS_H__ */

ext/contrib/ports/unix/proj/lib/unixlib.c

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2001-2003 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.
+ *
+ * Author: Kieran Mansley <kjm25@cam.ac.uk>
+ *
+ * $Id: unixlib.c,v 1.10 2010/02/17 16:52:30 goldsimon Exp $
+ */
+
+/*-----------------------------------------------------------------------------------*/
+/* unixlib.c
+ *
+ * The initialisation functions for a shared library
+ *
+ * You may need to configure this file to your own needs - it is only an example
+ * of how lwIP can be used as a self initialising shared library.
+ *
+ * In particular, you should change the gateway, ipaddr, and netmask to be the values
+ * you would like the stack to use.
+ */
+/*-----------------------------------------------------------------------------------*/
+
+/*
+#include "lwip/init.h"
+#include "lwip/sys.h"
+#include "lwip/mem.h"
+#include "lwip/memp.h"
+#include "lwip/pbuf.h"
+#include "lwip/tcp.h"
+#include "lwip/tcpip.h"
+#include "lwip/netif.h"
+#include "lwip/stats.h"
+#include "lwip/sockets.h"
+
+#include "netif/tapif.h"
+
+struct netif netif;
+*/
+
+static void
+tcpip_init_done(void *arg)
+{
+
+}
+
+void _init(void){
+
+}
+
+void _fini(void){
+}

ext/lwip/src/api/tcpip.c

@@ -160,7 +160,6 @@ tcpip_thread(void *arg)
 err_t
 tcpip_input(struct pbuf *p, struct netif *inp)
 {
-  printf("------TCPIP_INPUT()\n");
 #if LWIP_TCPIP_CORE_LOCKING_INPUT
   err_t ret;
   LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_input: PACKET %p/%p\n", (void *)p, (void *)inp));

ext/lwip/src/core/ipv4/ip.c

@@ -304,7 +304,6 @@ return_noroute:
 err_t
 ip_input(struct pbuf *p, struct netif *inp)
 {
-  printf("--------IP INPUT()\n");
   struct ip_hdr *iphdr;
   struct netif *netif;
   u16_t iphdr_hlen;

ext/lwip/src/core/tcp_in.c

@@ -91,7 +91,6 @@ static err_t tcp_timewait_input(struct tcp_pcb *pcb);
 void
 tcp_input(struct pbuf *p, struct netif *inp)
 {
-  printf("----TCP_INPUT()\n");
   struct tcp_pcb *pcb, *prev;
   struct tcp_pcb_listen *lpcb;
 #if SO_REUSE
@@ -268,10 +267,7 @@ tcp_input(struct pbuf *p, struct netif *inp)
   LWIP_DEBUGF(TCP_INPUT_DEBUG, ("-+-+-+-+-+-+-+-+-+-+-+-+-+-+\n"));
 #endif /* TCP_INPUT_DEBUG */
 
-  if(pcb == NULL)
+
-  {
-    printf ("--------------PCB == NULL!\n");
-  }
   if (pcb != NULL) {
     /* The incoming segment belongs to a connection. */
 #if TCP_INPUT_DEBUG
@@ -305,7 +301,6 @@ tcp_input(struct pbuf *p, struct netif *inp)
       }
     }
     tcp_input_pcb = pcb;
-    printf("    > TCP_PROCESS()\n");
     err = tcp_process(pcb);
     /* A return value of ERR_ABRT means that tcp_abort() was called
        and that the pcb has been freed. If so, we don't do anything. */
@@ -579,7 +574,6 @@ tcp_timewait_input(struct tcp_pcb *pcb)
 static err_t
 tcp_process(struct tcp_pcb *pcb)
 {
-  printf("------TCP_PROCESS()\n");
   struct tcp_seg *rseg;
   u8_t acceptable = 0;
   err_t err;
@@ -629,8 +623,6 @@ tcp_process(struct tcp_pcb *pcb)
 
   tcp_parseopt(pcb);
 
-printf("------TCP_PROCESS(): pcb->state = %d\n", pcb->state);
-
   /* Do different things depending on the TCP state. */
   switch (pcb->state) {
   case SYN_SENT:
@@ -1036,8 +1028,8 @@ tcp_receive(struct tcp_pcb *pcb)
 
         LWIP_DEBUGF(TCP_QLEN_DEBUG, ("%"U16_F" (after freeing unacked)\n", (u16_t)pcb->snd_queuelen));
         if (pcb->snd_queuelen != 0) {
-          //LWIP_ASSERT("tcp_receive: valid queue length", pcb->unacked != NULL ||
+          LWIP_ASSERT("tcp_receive: valid queue length", pcb->unacked != NULL ||
-          //            pcb->unsent != NULL);
+                      pcb->unsent != NULL);
         }
       }
 

ext/lwip/src/core/tcp_out.c

@@ -324,7 +324,6 @@ tcp_write_checks(struct tcp_pcb *pcb, u16_t len)
     pcb->flags |= TF_NAGLEMEMERR;
     return ERR_MEM;
   }
-  /*
   if (pcb->snd_queuelen != 0) {
     LWIP_ASSERT("tcp_write: pbufs on queue => at least one queue non-empty",
       pcb->unacked != NULL || pcb->unsent != NULL);
@@ -332,7 +331,6 @@ tcp_write_checks(struct tcp_pcb *pcb, u16_t len)
     LWIP_ASSERT("tcp_write: no pbufs on queue => both queues empty",
       pcb->unacked == NULL && pcb->unsent == NULL);
   }
-  */
   return ERR_OK;
 }
 

ext/lwip/src/netif/etharp.c

@@ -1276,7 +1276,6 @@ etharp_request(struct netif *netif, ip_addr_t *ipaddr)
 err_t
 ethernet_input(struct pbuf *p, struct netif *netif)
 {
-  printf("------ETHERNET_INPUT()\n");
   struct eth_hdr* ethhdr;
   u16_t type;
 #if LWIP_ARP || ETHARP_SUPPORT_VLAN

netcon/NetconEthernetTap.cpp

@@ -78,7 +78,7 @@ NetconEthernetTap::NetconEthernetTap(
 	Utils::snprintf(sockPath,sizeof(sockPath),"/tmp/.ztnc_%.16llx",(unsigned long long)nwid);
 	_dev = sockPath;
 
-	lwipstack = new LWIPStack("/root/dev/netcon/liblwip.so");
+	lwipstack = new LWIPStack("netcon/liblwip.so");
 	if(!lwipstack) // TODO double check this check
 		throw std::runtime_error("unable to load lwip lib.");
 	lwipstack->lwip_init();
@@ -340,6 +340,10 @@ void NetconEthernetTap::threadMain()
 	fprintf(stderr, "- IP_TMR_INTERVAL  = %d\n", IP_TMR_INTERVAL);
 	fprintf(stderr, "- DEFAULT_READ_BUFFER_SIZE  = %d\n", DEFAULT_READ_BUFFER_SIZE);
 	*/
+
+	//fprintf(stderr, "- LWIP_DEBUG = %d\n", LWIP_DEBUG);
+	fprintf(stderr, "- TCP_DEBUG = %d\n", TCP_DEBUG);
+
 	// Main timer loop
 	while (_run) {
 		uint64_t now = OSUtils::now();
@@ -520,7 +524,7 @@ err_t NetconEthernetTap::nc_poll(void* arg, struct tcp_pcb *tpcb)
 	NetconConnection *c = l->tap->getConnectionByPCB(tpcb);
 	NetconEthernetTap *tap = l->tap;
 	if(c && c->idx > 0){
-		fprintf(stderr, "nc_poll(): calling handle_Write()\n");
+		fprintf(stderr, "nc_poll(): calling handle_write()\n");
 		tap->handle_write(c);
 	}
 	return ERR_OK;
@@ -563,7 +567,7 @@ err_t NetconEthernetTap::nc_accept(void *arg, struct tcp_pcb *newpcb, err_t err)
 		int send_fd = tap->_phy.getDescriptor(client->rpc->sock);
 		int n = write(larg_fd, "z", 1);
     if(n > 0) {
-			if(sock_fd_write(send_fd, fds[1]) < 0) {
+			if(sock_fd_write(send_fd, fds[1]) > 0) {
 				client->unmapped_conn = new_conn;
 			}
 			else {
@@ -628,7 +632,6 @@ err_t NetconEthernetTap::nc_recved(void *arg, struct tcp_pcb *tpcb, struct pbuf
   }
   q = p;
   while(p != NULL) { // Cycle through pbufs and write them to the socket
-		fprintf(stderr, "nc_recved(): writing pbufs to socket\n");
     if(p->len <= 0)
       break; // ?
     if((n = tap->_phy.streamSend(c->sock,p->payload, p->len)) > 0) {