--- /dev/null
+PLATFORM = 6809
+CC = m6809-unknown-gcc
+# These are wrappers for lwasm and lwar
+ASM = m6809-unknown-as
+AR = m6809-unknown-ar
+LINKER = lwlink
+CFLAGS = -I../../Library/include -I../../Library/include/6809
+CFLAGS += -O0 -msoft-reg-count=0 -mfar-stack-param -fomit-frame-pointer
+LINKER_OPT = --format=raw -L../../Library/libs -lc6809
+LIBGCCDIR = $(dir $(shell $(CC) -print-libgcc-file-name))
+LINKER_OPT += -L$(LIBGCCDIR) -lgcc
+LINKER_OPT += --script=../util/$(TARGET).link
+ASM_OPT = -o
+CRT0 = ../../Library/libs/crt0_6809.o
+
+.SUFFIXES: .c .o
+
+SRCS = netd.c uip.c uiplib.c timer.c clock-arch.c uip_arp.c telnet.c lwwire.c
+SRCS += echoping.c dig.c gethostbyname.c httpd.c coconic.c
+
+OBJS = $(SRCS:.c=.o)
+
+APPS = netd
+
+all: $(APPS)
+
+
+netd: $(OBJS)
+ $(LINKER) $(LINKER_OPT) -o netd-lwwire $(CRT0) netd.o uip.o uiplib.o timer.o clock-arch.o uip_arp.o lwwire.o
+ $(LINKER) $(LINKER_OPT) -o netd-coconic $(CRT0) netd.o uip.o uiplib.o timer.o clock-arch.o uip_arp.o coconic.o
+ $(LINKER) $(LINKER_OPT) -o telnet $(CRT0) telnet.o gethostbyname.o
+ $(LINKER) $(LINKER_OPT) -o echoping $(CRT0) echoping.o
+ $(LINKER) $(LINKER_OPT) -o dig $(CRT0) dig.o
+ $(LINKER) $(LINKER_OPT) -o httpd $(CRT0) httpd.o
+
+
+
+size.report: $(APPS)
+ ls -l $^ > $@
+
+clean:
+ rm -f $(OBJS) $(APPS) $(SRCS:.c=) core *~ *.asm *.lst *.sym *.map *.noi *.lk *.ihx *.tmp *.bin size.report *~
+
+rmbak:
+ rm -f *~ core
--- /dev/null
+/*
+ * Copyright (c) 2006, 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. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 uIP TCP/IP stack
+ *
+ * $Id: clock-arch.c,v 1.2 2006/06/12 08:00:31 adam Exp $
+ */
+
+/**
+ * \file
+ * Implementation of architecture-specific clock functionality
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+#include <syscalls.h>
+#include <sys/types.h>
+#include "clock-arch.h"
+#include <sys/time.h>
+
+/*---------------------------------------------------------------------------*/
+clock_time_t
+clock_time(void)
+{
+ struct timeval tv;
+ struct timezone tz;
+
+ // gettimeofday(&tv, &tz);
+ struct{
+ uint16_t high;
+ uint16_t low;
+ }now;
+ _time((__ktime_t *)&now,1);
+ return now.low;
+ // return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+/*---------------------------------------------------------------------------*/
--- /dev/null
+/*
+ * Copyright (c) 2006, 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. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 uIP TCP/IP stack
+ *
+ * $Id: clock-arch.h,v 1.2 2006/06/12 08:00:31 adam Exp $
+ */
+
+#ifndef __CLOCK_ARCH_H__
+#define __CLOCK_ARCH_H__
+
+typedef int clock_time_t;
+#define CLOCK_CONF_SECOND 10
+
+#endif /* __CLOCK_ARCH_H__ */
--- /dev/null
+/**
+ * \defgroup clock Clock interface
+ *
+ * The clock interface is the interface between the \ref timer "timer library"
+ * and the platform specific clock functionality. The clock
+ * interface must be implemented for each platform that uses the \ref
+ * timer "timer library".
+ *
+ * The clock interface does only one this: it measures time. The clock
+ * interface provides a macro, CLOCK_SECOND, which corresponds to one
+ * second of system time.
+ *
+ * \sa \ref timer "Timer library"
+ *
+ * @{
+ */
+
+/*
+ * Copyright (c) 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. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: clock.h,v 1.3 2006/06/11 21:46:39 adam Exp $
+ */
+#ifndef __CLOCK_H__
+#define __CLOCK_H__
+
+#include "clock-arch.h"
+
+/**
+ * Initialize the clock library.
+ *
+ * This function initializes the clock library and should be called
+ * from the main() function of the system.
+ *
+ */
+void clock_init(void);
+
+/**
+ * Get the current clock time.
+ *
+ * This function returns the current system clock time.
+ *
+ * \return The current clock time, measured in system ticks.
+ */
+clock_time_t clock_time(void);
+
+/**
+ * A second, measured in system clock time.
+ *
+ * \hideinitializer
+ */
+#ifdef CLOCK_CONF_SECOND
+#define CLOCK_SECOND CLOCK_CONF_SECOND
+#else
+#define CLOCK_SECOND (clock_time_t)32
+#endif
+
+#endif /* __CLOCK_H__ */
+
+/** @} */
--- /dev/null
+/*
+ This is a net_native device driver for Jim Brain's CoCoNIC card. This
+ card is based on the CS8900A, and Jim's design uses the "I/O Memory Access",
+ mapping the NIC's 16 bytes of access regs to 0xff40.
+
+ note: This plays with I/O memory, of course, and shouldn't be in userspace!!!
+
+ TODO: dedicated polling routine for in-kernel operation
+
+*/
+
+#include <types.h>
+#include <stdio.h>
+#include "device.h"
+#include "uip.h"
+
+
+#define rxtx *(volatile uint16_t *)0xff40 /* rxrx data */
+#define rxtx8low *(volatile uint8_t *)0xff40 /* Low byte of rxtx data */
+#define rxtx8hi *(volatile uint8_t *)0xff41 /* high byte of rxtx data */
+#define txcmd *(volatile uint16_t *)0xff44 /* transmit command register */
+#define txlen *(volatile uint16_t *)0xff46 /* transmit length register */
+#define pageptr *(volatile uint16_t *)0xff4a /* packetpage pointer register */
+#define pagedata *(volatile uint16_t *)0xff4c /* packetpage data register */
+#define page8low *(volatile uint8_t *)0xff4c /* packetpage data register */
+#define page8hi *(volatile uint8_t *)0xff4d /* packetpage data register */
+
+
+
+/* swap bytes in word */
+#define bswap( v ) ( v << 8 ) | ( v >> 8 )
+
+
+/* Get 16 bit word from NIC */
+static uint16_t getpp( uint16_t addr )
+{
+ /* for 16 bit read fixed card
+ pageptr = bswap( addr );
+ return bswap( pagedata );
+ */
+ pageptr = bswap( addr );
+ return ( page8hi << 8 ) | page8low;
+}
+
+/* set 16 bit word to packetpage */
+static void setpp( uint16_t addr, uint16_t data ){
+ pageptr = bswap( addr );
+ pagedata = bswap( data );
+}
+
+/* get status / length */
+static uint16_t getlen( void )
+{
+ return (rxtx8hi << 8 ) | rxtx8low ;
+}
+
+/* drop a frame */
+static void drop( void )
+{
+ setpp( 0x102, getpp( 0x102 ) | 0x40 );
+}
+
+
+
+
+/* send sbuf, size len to the device
+ returns 0 on success, -1 on error
+ */
+int device_send( char *sbuf, int len )
+{
+ int alen;
+ uint16_t *ptr = (uint16_t *)sbuf;
+
+ /* send transmit command, length */
+ txcmd = bswap( 0x00c0 );
+ txlen = bswap( len );
+ /* round up for word acesses to NIC */
+ alen = (len + 1) / 2;
+ /* wait for room in NIC, drop received frames if necessary */
+ while( ! (getpp( 0x138 ) & 0x0100) )
+ drop();
+ /* send words from frame to NIC */
+ while( alen-- ){
+ //rxtx = *ptr++;
+ rxtx8low = *sbuf++;
+ rxtx8hi = *sbuf++;
+ }
+ return 0;
+}
+
+
+/* get sbuf, max size len from the device
+ returns size of recieved packets, 0 if nothing waiting
+*/
+int device_read( char *buf, int len )
+{
+ int rlen, alen;
+ uint16_t *ptr = (uint16_t *)buf;
+
+ /* return if there is no packet waiting for us */
+ if( ! (getpp( 0x124 ) & 0xd00) )
+ return 0;
+ /* drop status */
+ rlen = getlen();
+ /* get length */
+ rlen = getlen();
+ /* word access round-up */
+ alen = (rlen + 1) / 2;
+ /* packet too big for our buffer?*/
+ if( alen*2 > len ){
+ drop();
+ return 0;
+ }
+ /* get words from NIC into buffer */
+ while( alen-- ){
+ //*ptr++ = rxtx;
+ *buf++ = rxtx8low;
+ *buf++ = rxtx8hi;
+ }
+ return rlen;
+}
+
+
+
+/* initialize device
+ returns 0 on success, -1 on error
+*/
+int device_init( void )
+{
+ /* check for card */
+ uint16_t id = getpp( 0x0000 );
+ if( id != 0x630e ){
+ fprintf( stderr, "CoCoNIC card not found\n", id );
+ return -1;
+ }
+ /* set MAC address of card */
+ pageptr = bswap( 0x158 );
+ page8low = uip_lladdr.addr[0];
+ page8hi = uip_lladdr.addr[1];
+
+ pageptr = bswap( 0x15a );
+ page8low = uip_lladdr.addr[2];
+ page8hi = uip_lladdr.addr[3];
+
+ pageptr = bswap( 0x15c );
+ page8low = uip_lladdr.addr[4];
+ page8hi = uip_lladdr.addr[5];
+
+ /* turn on receiver / transmitter */
+ setpp( 0x112, 0x00d3 );
+ /* allow reception of our address frames and broadcasts */
+ setpp( 0x104, 0x0d05 );
+
+ return 0;
+}
+
+
+
+
+
--- /dev/null
+/*
+
+ Device Driver header for uip/fuzix
+
+
+ */
+
+/* implemented by device: */
+
+/* send sbuf, size len to the device
+ returns 0 on success, -1 on error
+ */
+int device_send( char *sbuf, int len );
+
+
+/* get sbuf, max size len from the device
+ returns size of recieved packets, 0 if nothing waiting
+*/
+int device_read( char *buf, int len );
+
+
+
+/* initialize device
+ returns 0 on success, -1 on error
+*/
+int device_init( void );
+
--- /dev/null
+/*
+ A Cheesey Dig Client
+
+ todo:
+ allow setting of dns server :)
+
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <signal.h>
+#include "netdb.h"
+
+struct header{
+ uint16_t id;
+ uint8_t cntl;
+ uint8_t ret;
+ uint16_t qdcount;
+ uint16_t ancount;
+ uint16_t nscount;
+ uint16_t arcount;
+};
+
+struct RRtail{
+ uint16_t type;
+ uint16_t class;
+ uint32_t ttl;
+ uint16_t rdlen;
+};
+
+
+int fd;
+char buf[1024];
+
+
+void alarm_handler( int signum ){
+ return;
+}
+
+
+int send_question( char *name ){
+ struct header *p=( struct header *)buf;
+ struct RRtail *t;
+
+ memset( p, 0, sizeof(buf) );
+ p->id = 42; /* "random" query ID */
+ p->cntl = 0x1; /* request a recursive query */
+ p->qdcount = 1; /* one question */
+ /* fill out name string */
+ char *i = name;
+ char *o = buf + sizeof(struct header);
+ char *l = o++;
+
+ while(1){
+ if( ! *i )
+ break;
+ if( *i == '.' ){
+ *l = o - l - 1 ;
+ i++;
+ l = o++;
+ }
+ else
+ *o++ = *i++;
+ }
+ *l = o - l - 1;
+ *o++ = 0;
+ /* fill out rest of RR */
+ t = (struct RRtail *)o;
+ /* type: A record */
+ t->type = htons(1);
+ /* class: inet */
+ t->class = htons(1);
+ o += 4;
+
+ write( fd, buf, (int)(o - buf) );
+
+}
+
+void print_name( char *ptr ){
+ while(1){
+ if( *ptr == 0 ){
+ break;
+ }
+ if( (*ptr & 0xc0) == 0xc0 ){
+ ptr = buf + *(ptr + 1);
+ continue;
+ }
+ fwrite( ptr + 1, *ptr, 1, stdout );
+ // write(1, ptr + 1, *ptr );
+ printf(".");
+ ptr += *ptr + 1;
+ }
+ printf("\t\t");
+ return;
+}
+
+
+print_entry( char **pptr, int no ){
+ struct RRtail *t;
+ int i,j;
+ char *ptr = *pptr;
+ for( i = 0; i < no; i++ ){
+ print_name( ptr );
+ while(1){
+ if( *ptr == 0 ){
+ ptr++;
+ break;
+ }
+ if( (*ptr & 0xc0) == 0xc0 ){
+ ptr += 2;
+ break;
+ }
+ ptr += *ptr + 1;
+ }
+ t = (struct RRtail *)ptr;
+ ptr += sizeof( struct RRtail);
+
+ /* cname */
+ if( t->type == 6 ){
+ printf( "SOA ");
+ print_name( ptr );
+ ptr += t->rdlen;
+ }
+ else if( t->type == 5 ){
+ printf( "CNAME ");
+ print_name( ptr );
+ ptr += t->rdlen;
+ }
+ else if( t->type == 1 ){
+ printf( "A ");
+ for( j=0; j<t->rdlen; j++ )
+ printf("%d.",*ptr++ );
+ }
+ else{
+ printf( "??? ");
+ ptr += t->rdlen;
+ }
+ printf("\n");
+ }
+ *pptr = ptr;
+}
+
+int main( int argc, char *argv[] ){
+
+ struct sockaddr_in addr;
+ int x;
+ int tries = 5;
+
+ fd = socket( AF_INET, SOCK_DGRAM, 0);
+ if( fd < 0 ){
+ perror("socket");
+ exit(1);
+ }
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons( 53 );
+ inet_pton( AF_INET, "192.168.1.1", &addr.sin_addr.s_addr );
+
+ if( connect( fd, (struct sockaddr *)&addr, sizeof(addr) ) < 0 ){
+ perror("connect");
+ exit(1);
+ }
+
+ for( ; tries ; tries-- ){
+ send_question( argv[1] );
+ signal( SIGALRM, alarm_handler );
+ alarm(2);
+ x = read( fd, buf, 1024 );
+ if( x <= 0 )
+ continue;
+ goto process;
+ }
+ perror("timeout");
+ exit(1);
+
+ process:
+ /* process packet */
+ {
+ struct header *h = (struct header *)buf;
+
+ char *ptr;
+ int i,j;
+
+ if( h->id != 42 ){
+ fprintf( stderr, "bad ID\n");
+ exit(1);
+ }
+
+ if( ! h->cntl & 0x80 ){
+ fprintf( stderr, "not an answer\n");
+ exit(1);
+ }
+
+ if( ! h->ret & 0x80 ){
+ fprintf( stderr, "server doesn't do recursion\n");
+ }
+ /* skip over our question(s) */
+ printf("qust: %d, ans: %d, ns: %d, add: %d\n",
+ h->qdcount, h->ancount, h->nscount, h->arcount );
+ ptr = buf + sizeof( struct header );
+ printf("questions:\n");
+ /* move ptr past questions */
+ for( i = 0; i < h->qdcount; i++ ){
+ print_name( ptr );
+ printf("\n");
+ while(1){
+ if( *ptr == 0 ){
+ ptr++;
+ break;
+ }
+ if( (*ptr & 0xc0) == 0xc0 ){
+ ptr += 2;
+ break;
+ }
+ ptr += *ptr + 1;
+ }
+ ptr +=4;
+ }
+ /* print out answers */
+ if( h->ancount ){
+ printf("answers:\n");
+ print_entry( &ptr, h->ancount );
+ }
+ if( h->nscount ){
+ printf("authority:\n");
+ print_entry( &ptr, h->nscount );
+ }
+ if( h->arcount ){
+ printf("addional:\n");
+ print_entry( &ptr, h->arcount );
+ }
+ }
+ exit(0);
+}
--- /dev/null
+/*
+ Echoping - A udp test client
+ send some text to an udp echo server, waits for reply, prints it.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+
+int main( int argc, char *argv[] ){
+
+ struct sockaddr_in addr;
+ int fd;
+ char buf[1024];
+ int x;
+
+ fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if( fd < 0 ){
+ perror("socket()");
+ exit(1);
+ }
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(7);
+ inet_pton( AF_INET, "192.168.42.1", &addr.sin_addr.s_addr );
+
+ if( connect( fd, (struct sockaddr *) &addr, sizeof(addr)) < 0 ){
+ perror("connect");
+ exit(1);
+ }
+
+ write( fd, "This is a test!", 16 );
+ sleep(1);
+ write( fd, "This is a test!", 16 );
+
+ x=read( fd, buf, 1024 );
+ printf("read %d: >%s<\n", x, buf );
+
+ exit(0);
+
+}
--- /dev/null
+#include <stdint.h>
+#include <sys/netdev.h>
+#include <sys/net_native.h>
+
+#define UIP_CONF_STATISTICS 0
+#define CCIF
+
+typedef uint8_t uip_tcp_appstate_t;
+typedef uint8_t uip_udp_appstate_t;
+typedef uint8_t uip_stats_t;
+
+#define UIP_APPCALL netd_appcall
+#define UIP_UDP_APPCALL netd_udp_appcall
+
+#define UIP_CONF_LLH_LEN 14
+
+#define UIP_CONF_BYTE_ORDER UIP_BIG_ENDIAN
+
+#define UIP_CONF_ACTIVE_OPEN 1
+
+#define UIP_CONF_RECEIVE_WINDOW 1500
+
+#define MIN(n, m) (((n) < (m)) ? (n) : (m))
--- /dev/null
+package netd-base
+if-file dig
+f 0644 /etc/netrc netrc
+f 0644 /etc/resolv.conf resolv.conf
+f 0755 /usr/bin/dig dig
+f 0755 /usr/bin/echoping echoping
+f 0755 /usr/bin/telnet telnet
+n 20666 1089 /dev/net
+
+
+package netd-lwwire
+if-file netd-lwwire
+f 0755 /usr/bin/netd-lwwire netd-lwwire
+n 060666 2048 /dev/dw0
+
+package netd-coconic
+if-file netd-coconic
+f 0755 /usr/bin/netd-coconic netd-coconic
+
+
--- /dev/null
+/* A stab at a resolver
+
+ NOTES:
+ * only does recursive querries, doesn't to iterative.
+
+ TODO:
+ * needs to read rc file
+ * retranslate textual IP address
+ * should work with TCP too
+ * fill out more of hostent struct
+
+*/
+
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include "netdb.h"
+
+/* DNS packet header */
+struct header{
+ uint16_t id; /* unique session ID */
+ uint8_t cntl; /* bit fields - mostly request stuff */
+ uint8_t ret; /* bit feilds - mostly return/stat stuff */
+ uint16_t qdcount; /* number of queries */
+ uint16_t ancount; /* number of answers */
+ uint16_t nscount; /* number of suggested name servers */
+ uint16_t arcount; /* number of suggested name server IP addresses */
+};
+
+/* Tail of Returned resource records (RR's) */
+struct RRtail{
+ uint16_t type; /* which type of record, 1 = A, IP address */
+ uint16_t class; /* which network class, 1 = inet */
+ uint32_t ttl; /* time to live of records in secounds */
+ uint16_t rdlen; /* length of following data field, 4 for IP addresses */
+};
+
+#define MAXADDRS 4 /* max number of address stored in hostent struct */
+
+
+/* Does nothing, used for timing out waiting for DNS packet(s) */
+static void alarm_handler( int signum ){
+ return;
+}
+
+static int fd; /* file descriptor for inet socket */
+static char buf[512]; /* packet buffer */
+
+
+/* formulate and send a DNS query packet */
+static int send_question( char *name ){
+ struct header *p=( struct header *)buf;
+ struct RRtail *t;
+
+ memset( p, 0, sizeof(buf) );
+ p->id = 42; /* "random" query ID */
+ p->cntl = 0x1; /* request a recursive query */
+ p->qdcount = 1; /* one question */
+ /* fill out name string */
+ char *i = name;
+ char *o = buf + sizeof(struct header);
+ char *l = o++;
+
+ while(1){
+ if( ! *i )
+ break;
+ if( *i == '.' ){
+ *l = o - l - 1 ;
+ i++;
+ l = o++;
+ }
+ else
+ *o++ = *i++;
+ }
+ *l = o - l - 1;
+ *o++ = 0;
+ /* fill out rest of RR */
+ t = (struct RRtail *)o;
+ /* type: A record */
+ t->type = htons(1);
+ /* class: inet */
+ t->class = htons(1);
+ o += 4;
+
+ write( fd, buf, (int)(o - buf) );
+
+}
+
+
+
+int h_errno; /* Return error indicator */
+
+static char addrs[MAXADDRS][4]; /* hostent static address table */
+
+static char *list[MAXADDRS+1]; /* hostent static list of addresses */
+
+static struct hostent host={ /* static returned hostent struct */
+ NULL,
+ NULL,
+ AF_INET,
+ 4,
+ list
+};
+
+
+/* Get a host by it's name */
+struct hostent *gethostbyname( char *name ){
+ struct sockaddr_in addr;
+ int x;
+ int tries = 5;
+ int lno=0;
+ char *ptr;
+ char server[17];
+ char *ws = " \f\n\r\t\v";
+
+ /* Try to just translate passed stringified IP address */
+ x = inet_pton( AF_INET, name, list[0] );
+ if( x == 1 ){
+ list[1] = NULL;
+ return &host;
+ }
+
+ /* open up /etc/resolv.conf and read in
+ fixme: handles only small config files < 512 bytes
+ fixme: if we have other gethostby-whatever functions, this should
+ be factored out as it's own static function */
+ fd = open( "/etc/resolv.conf", O_RDONLY );
+ if( fd < 0 ){
+ return NULL;
+ }
+ x = read( fd, buf, 511 );
+ if( x < 1 ){
+ close( fd );
+ return NULL;
+ }
+ buf[x]=0;
+ ptr = strtok( buf, ws );
+ while( ptr ){
+ if( ! strcmp( ptr, "nameserver" ) ){
+ ptr=strtok( NULL, ws );
+ if( ptr == NULL ){
+ return NULL;
+ }
+ strcpy( server, ptr );
+ }
+ ptr = strtok( NULL, ws );
+ }
+
+
+ fd = socket( AF_INET, SOCK_DGRAM, 0);
+ if( fd < 0 ){
+ return NULL;
+ }
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons( 53 );
+
+ inet_pton( AF_INET, server, &addr.sin_addr.s_addr );
+
+ if( connect( fd, (struct sockaddr *)&addr, sizeof(addr) ) < 0 )
+ goto error;
+
+ for( ; tries ; tries-- ){
+ send_question( name );
+ signal( SIGALRM, alarm_handler );
+ alarm(2);
+ x = read( fd, buf, 512 );
+ if( x < 0 )
+ continue;
+ goto process;
+ }
+ h_errno = HOST_NOT_FOUND;
+ goto error;
+
+ process:
+ /* process packet */
+ {
+ struct header *h = (struct header *)buf;
+ struct RRtail *t;
+ char *ptr;
+ int i,j;
+
+ if( h->id != 42 ) /* correct session ID ? */
+ goto error;
+
+ if( ! h->cntl & 0x80 ) /* is an answer packet? */
+ goto error;
+
+ if( ! h->ret & 0x80 ) /* is a recursive answer? */
+ goto error;
+
+ if( ! h->ancount ) /* is there any answers? */
+ goto error;
+
+ /* skip over our question(s) */
+ ptr = buf + sizeof( struct header );
+ for( i = 0; i < h->qdcount && i < 4; i++ ){
+ while(1){
+ if( *ptr == 0 ){
+ ptr++;
+ break;
+ }
+ if( (*ptr & 0xc0) == 0xc0 ){
+ ptr += 2;
+ break;
+ }
+ ptr += *ptr + 1;
+ }
+ ptr +=4;
+ }
+ /* cap answers at MAXADDRS */
+ if( h->ancount > MAXADDRS )
+ h->ancount = MAXADDRS;
+ /* Iterate over answers */
+ for( i = 0; i < h->ancount; i++ ){
+ /* parse off name */
+ while(1){
+ if( *ptr == 0 ){
+ ptr++;
+ break;
+ }
+ if( (*ptr & 0xc0) == 0xc0 ){
+ ptr += 2;
+ break;
+ }
+ ptr += *ptr + 1;
+ }
+ /* point to rest of RR structure */
+ t = (struct RRtail *)ptr;
+ ptr += sizeof( struct RRtail);
+ if( t->type == 0x01 ){
+ for( j=0; j<t->rdlen; j++ )
+ addrs[lno][j] = *ptr++;
+ }
+ else{
+ ptr += t->rdlen;
+ }
+ list[lno] = &addrs[lno][0];
+ lno++;
+ }
+ list[lno] = NULL;
+ }
+ close(fd);
+ return &host;
+ error:
+ close(fd);
+ return NULL;
+}
+
--- /dev/null
+/*
+
+ A simple http server
+
+ */
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+
+struct sockaddr_in addr;
+struct sockaddr_in laddr;
+int lfd;
+
+
+my_open( int argc, char *argv[]){
+ int port = 80; /* default port */
+
+ addr.sin_port = htons(port);
+ addr.sin_family = AF_INET;
+
+ lfd = socket(AF_INET, SOCK_STREAM, 0);
+ if (lfd < 0) {
+ perror("af_inet sock_stream 0");
+ exit(1);
+ }
+
+ if( bind( lfd, &addr, sizeof(addr) ) ){
+ perror("bind");
+ exit(1);
+ }
+
+ if( listen( lfd, 1 ) ){
+ perror("connect");
+ exit(1);
+ }
+}
+
+int main( int argc, char *argv[]){
+ int len;
+
+ my_open( argc, argv );
+ printf("httpd server\n");
+ while(1);
+ return 0;
+
+
+}
+
+
--- /dev/null
+/*
+
+ Network via the LWWire standard for DW4
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/drivewire.h>
+
+#include "device.h"
+
+static int fd; /* fd of drivewire block device fd */
+
+/* returns number of byte in next packet, 0 = nothing waiting */
+static int dwnet_poll( void )
+{
+ int ret;
+ struct dw_trans d;
+ unsigned char buf[3];
+ buf[0] = 0xf3; /* lwwire's extension op */
+ buf[1] = 0x01; /* extension no */
+ buf[2] = 0x00; /* op = poll */
+ d.sbuf = buf;
+ d.sbufz = 3;
+ d.rbuf = buf;
+ d.rbufz = 2;
+ ret = ioctl( fd, DRIVEWIREC_TRANS, &d );
+ if( ret < 0 ){
+ return -1;
+ }
+ return (buf[0]<<8) + buf[1];
+}
+
+
+/* drop the current packet */
+static int dwnet_drop( void )
+{
+ int ret;
+ struct dw_trans d;
+ unsigned char buf[3];
+ buf[0] = 0xf3; /* lwwire's extension op */
+ buf[1] = 0x01; /* extension no */
+ buf[2] = 0x04; /* op = drop */
+ d.sbuf = buf;
+ d.sbufz = 3;
+ d.rbuf = NULL;
+ d.rbufz = 0;
+ ret = ioctl( fd, DRIVEWIREC_TRANS, &d );
+ if( ret < 0 ){
+ return -1;
+ }
+ return 0;
+}
+
+/* receive packet to a buffer */
+static int dwnet_recv( unsigned char *b, int len )
+{
+ int ret;
+ struct dw_trans d;
+ unsigned char buf[3];
+ buf[0] = 0xf3; /* lwwire's extension op */
+ buf[1] = 0x01; /* extension no */
+ buf[2] = 0x01; /* op = read */
+ d.sbuf = buf;
+ d.sbufz = 3;
+ d.rbuf = b;
+ d.rbufz = len;
+ ret = ioctl( fd, DRIVEWIREC_TRANS, &d );
+ if( ret < 0 ){
+ return -1;
+ }
+ return 0;
+}
+
+/* received a chunked packets */
+static int dwnet_recv_chunk( unsigned char *b, int size )
+{
+ int ret;
+ struct dw_trans d;
+ unsigned char buf[3];
+ buf[0] = 0xf3; /* lwwire's extension op */
+ buf[1] = 0x01; /* extension no */
+ buf[2] = 0x03; /* op = read chunk */
+ d.sbuf = buf;
+ d.sbufz = 3;
+ d.rbuf = b;
+ d.rbufz = size;
+ ret = ioctl( fd, DRIVEWIREC_TRANS, &d );
+ if( ret < 0 ){
+ return -1;
+ }
+ return 0;
+}
+
+/* send packet to net device */
+int device_send( char *sbuf, int len )
+{
+ int ret;
+ struct dw_trans d;
+ unsigned char buf[5];
+ buf[0] = 0xf3; /* lwwire's extension op */
+ buf[1] = 0x01; /* extension no */
+ buf[2] = 0x02; /* op = send */
+ buf[3] = len >> 8;
+ buf[4] = len & 0xff ;
+ d.sbuf = buf;
+ d.sbufz = 5;
+ d.rbuf = 0;
+ d.rbufz = 0;
+ ret = ioctl( fd, DRIVEWIREC_TRANS, &d );
+ if( ret < 0 )
+ return -1;
+ d.sbuf = sbuf;
+ d.sbufz = len;
+ d.rbuf = 0;
+ d.rbufz = 0;
+ ret = ioctl( fd, DRIVEWIREC_TRANS, &d );
+ if( ret < 0 )
+ return -1;
+ return 0;
+}
+
+#define CHUNKZ 511
+
+
+int device_read( char *buf, int len )
+{
+ int packetz;
+ int l;
+ int s;
+ l = packetz = dwnet_poll();
+ if( l > len ){
+ dwnet_drop();
+ }
+ while( l > 0 ){
+ if( l > CHUNKZ )
+ s = CHUNKZ;
+ else
+ s = l;
+ dwnet_recv_chunk( buf, s );
+ buf += CHUNKZ;
+ l -= CHUNKZ;
+ }
+ return packetz;
+}
+
+/* initialize network device */
+int device_init( void )
+{
+ fd=open( "/dev/dw0", O_RDONLY, 0 );
+ if( fd < 0 ){
+ return -1;
+ }
+ return 0;
+}
+
--- /dev/null
+/*
+
+*** Experimental ****
+
+A Contiki/uIP based net_native implementation for Fuzix. This runs
+as a user-space daemon.
+
+
+There are two event "threads" - one for the kernel messages, and one for
+uIP's messages... these "threads" are round-robin'ed together in main().
+
+
+issues:
+* is this the correct kernel call / data struct for ticks ?
+* select() is not used, but should be.
+
+todo:
+
+* deamonize (detach) this proggie. (will we always have setsid() ? )
+* UDP local bind
+* TCP passive open
+
+
+*/
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/drivewire.h>
+#include <sys/netdev.h>
+#include <sys/net_native.h>
+
+#include "uip.h"
+#include "timer.h"
+#include "uip_arp.h"
+#include "clock.h"
+#include "netd.h"
+#include "uiplib.h"
+#include "device.h"
+
+#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+
+int bfd; /* fd of data backing file */
+int knet; /* fd of kernel's network inface */
+int rc; /* fd of rc file */
+struct sockmsg sm; /* event from kernel iface */
+struct netevent ne; /* event to kernel iface */
+struct timer periodic_timer, arp_timer;
+
+/* 'links' associate a kernel socket no to a uIP connection pointer
+ and hold some useful state. Fuzix inits a new socket well before
+ uIP, so a separate linkage/state struct is needed.
+*/
+struct link map[NSOCKET];
+int freelist[NSOCKET];
+int freeptr = 0;
+
+
+/* print an error message */
+void printe( char *mesg )
+{
+ write(2, mesg, strlen(mesg));
+}
+
+/* print an error message an quit w/ error */
+void exit_err( char *mesg )
+{
+ printe( mesg );
+ exit(1);
+}
+
+/* wrapper around writing to kernel net device */
+void ksend( int event )
+{
+ ne.ret = 0;
+ ne.event = event;
+ if ( write( knet, &ne, sizeof(ne) ) < 0 )
+ exit_err("cannot write kernel net dev\n");
+}
+
+
+/* allocate a connection linkage */
+int get_map( void )
+{
+ int new = freelist[ --freeptr ];
+ memset( &map[new], 0, sizeof( map[new] ) );
+ return new;
+}
+
+/* release a linkage */
+void rel_map( int n )
+{
+ freelist[ freeptr++ ] = n;
+}
+
+/* initialize the free map of links */
+void init_map( void )
+{
+ int n;
+ for ( n = 0; n<NSOCKET; n++)
+ rel_map( n );
+}
+
+
+/* send or resend tcp data */
+void send_tcp( struct link *s )
+{
+ uint32_t base = s->socketn * RINGSIZ * 2 + RINGSIZ;
+ if ( ! s->len ) return;
+ lseek( bfd, base + s->tstart, SEEK_SET );
+ if ( read( bfd, uip_appdata, s->len ) < 0 )
+ exit_err("cannot read from backing file\n");
+ uip_send( uip_appdata, s->len );
+}
+
+/* send udp data */
+void send_udp( struct link *s )
+{
+ /* Send packet to net */
+ uint32_t base = s->socketn * RINGSIZ * 2 + RINGSIZ;
+ uint16_t len = s->tsize[s->tstart];
+ lseek( bfd, base + s->tstart * TXPKTSIZ, SEEK_SET );
+ if ( read( bfd, uip_appdata, len ) < 0 )
+ exit_err("cannot read from backing file\n");
+ uip_udp_send( len );
+ if ( ++s->tstart == NSOCKBUF )
+ s->tstart = 0;
+ /* Send Room event back to kernel */
+ ne.socket = s->socketn;
+ ne.data = s->tstart;
+ ksend( NE_ROOM );
+}
+
+/* return amout of free room for adding data in recv ring buffer */
+uint16_t room( struct link *s )
+{
+ uint16_t t = 0;
+ if ( s->rstart > s->rend )
+ t = s->rstart - s->rend;
+ else
+ t = RINGSIZ - (s->rend - s->rstart);
+ return t-1;
+}
+
+/* return capacity of data in transmit ring buffer */
+uint16_t cap( struct link *s )
+{
+ if ( s->tstart > s->tend )
+ return RINGSIZ - (s->tstart - s->tend);
+ else
+ return s->tend - s->tstart;
+}
+
+/* uIP callback for TCP events */
+void netd_appcall()
+{
+ /*
+ printe( "appcall: " );
+ if( uip_aborted() ) printe("aborted.\n");
+ if( uip_acked() ) printe("acked.\n");
+ if( uip_closed() ) printe("closed.\n");
+ if( uip_newdata() ) printe("new data.\n");
+ if( uip_poll() ) printe("polled.\n");
+ if( uip_rexmit() ) printe("rexmit.\n");
+ if( uip_timedout() ) printe("timed out.\n");
+ if( uip_connected() ) printe("connected.\n" );
+ */
+ struct link *s = & map[uip_conn->appstate];
+ ne.socket = s->socketn;
+
+ /* uIP sends up a connected event for both
+ active and passive opens */
+ if ( uip_connected() ){
+ int flag = 0;
+ /* find see if anything is listening on this port */
+ {
+ int i;
+ for ( i = 0; i< NSOCKET; i++ ){
+ if ( map[i].port == uip_conn->lport ){
+ /* found a listening port */
+ /* FIXME: what am I supposed to send to the
+ listening socket?
+ */
+ ne.data = SS_ACCEPTWAIT;
+ ksend( NE_EVENT );
+ /* make a new link and Associate the new uip_connection
+ with some lcn/socket the kernel readied */
+ flag = 1;
+ break;
+ }
+ }
+ }
+ if ( ! flag ){
+ /* Not a listing port so assume a active open */
+ ne.data = SS_CONNECTED;
+ ksend( NE_NEWSTATE );
+ }
+ }
+
+
+ if ( uip_newdata() ){
+ /* there new data in the packet buffer */
+ uint16_t len = uip_datalen();
+ uint16_t l;
+ char *ptr = uip_appdata;
+ uint32_t base = ne.socket * RINGSIZ * 2;
+ if ( room(s) < len )
+ exit_err("RECV OVERFLOW!\n");
+ while ( len ){
+ if ( s->rend >= s->rstart ) /* not wrapped */
+ l = RINGSIZ - s->rend;
+ else
+ l = s->rstart - s->rend - 1;
+ if ( l > len )
+ l = len;
+ lseek( bfd, base + s->rend, SEEK_SET );
+ if ( write( bfd, ptr, l ) < 0 )
+ exit_err("cannot write to backing file\n");
+ ptr += l;
+ s->rend += l;
+ if ( s->rend == RINGSIZ )
+ s->rend = 0;
+ len -= l;
+ }
+ /* throttle incoming data if there's no room in ring buf */
+ if ( room(s) < UIP_RECEIVE_WINDOW )
+ uip_stop();
+ /* tell kernel we have data */
+ ne.data = s->rend;
+ /* ne.info = ???; for udp only? */
+ ksend( NE_DATA );
+ }
+
+ if ( uip_acked() ){
+ /* actually remove the bytes from the ring
+ * and send ROOM notice to kernel */
+ ne.data = (s->tstart + s->len) & (RINGSIZ - 1);
+ s->tstart = ne.data; /* adjust local copy also!!! */
+ ksend( NE_ROOM );
+ s->len = 0;
+ }
+
+ if ( uip_poll() ){
+ uint16_t len;
+
+ /* if flow stopped, check to see if there's enough room
+ to start it again.
+ */
+ if ( uip_stopped(uip_conn) && ( room(s) >= UIP_RECEIVE_WINDOW) )
+ uip_restart();
+
+ /* send data if there is some in the xmit ringbuf */
+ if ( ! s->len ){
+ if ( s->tend != s->tstart ){
+ if ( s->tend > s->tstart ) /* not wrapped */
+ len = s->tend - s->tstart;
+ else /* wrapped - just go to logical end of data */
+ len = RINGSIZ - s->tstart;
+ /* don't send more than TCP will actually send */
+ if ( uip_mss() < len )
+ s->len = uip_mss();
+ else
+ s->len = len;
+ send_tcp( s );
+ }
+ }
+
+ /* test for local close - LINK_CLOSED is set by kernel event thread */
+ if ( s->flags & LINK_CLOSED ){
+ uip_close();
+ s->flags &= ~LINK_CLOSED;
+ s->flags |= LINK_SHUTW;
+ if ( s->flags & LINK_SHUTR )
+ rel_map( uip_conn->appstate );
+ }
+
+ }
+
+ if ( uip_rexmit() ){
+ /* resend data */
+ send_tcp( s );
+ }
+
+ if ( uip_closed() || uip_aborted() ){
+ int e;
+ switch ( s->flags & (LINK_SHUTR | LINK_SHUTW) ){
+ case 0:
+ e = NE_SHUTR;
+ break;
+ case LINK_SHUTR:
+ goto close;
+ case LINK_SHUTW:
+ e = NE_NEWSTATE;
+ break;
+ case LINK_SHUTR | LINK_SHUTW:
+ return;
+ }
+ /* formulate and send reset of message */
+ ne.data = SS_CLOSED;
+ ksend( e );
+ /* release link resource if both sides closed */
+ /* mark link as remote closed */
+ close:
+ s->flags |= LINK_SHUTR;
+ if ( s->flags & LINK_SHUTW )
+ rel_map( uip_conn->appstate );
+ }
+}
+
+
+
+/* uIP callbck for UDP event */
+void netd_udp_appcall()
+{
+ /* debug
+ printe( "appcall udp: " );
+ if( uip_aborted() ) printe("aborted");
+ if( uip_acked() ) printe("acked");
+ if( uip_closed() ) printe("closed");
+ if( uip_newdata() ) printe("new data");
+ if( uip_poll() ) printe("polled");
+ if( uip_rexmit() ) printe("rexmit");
+ if( uip_timedout() ) printe("timed out");
+ if( uip_connected() ) printe("connected" );
+ printe("\n");
+ */
+
+ struct link *s = & map[uip_udp_conn->appstate];
+ ne.socket = s->socketn;
+
+ if ( uip_poll() ){
+ /* send data if there's data waiting on this connection */
+ /* doing this before testing for close ??? */
+ if ( s->tend != s->tstart ){
+ send_udp( s );
+ return; /* short circuit LINK_CLOSED until EOD. */
+ }
+ /* if flagged close from kernel, then really close, confirm w/ kernel */
+ if ( s->flags & LINK_CLOSED ){
+ /* send closed event back to kernel */
+ ne.socket = sm.s.s_num;
+ ne.data = SS_CLOSED;
+ ksend( NE_NEWSTATE );
+ /* release private link resource */
+ rel_map( uip_udp_conn->appstate );
+ uip_udp_remove( uip_udp_conn );
+ return;
+ }
+ }
+
+ if ( uip_newdata() ){
+ /* there new data in the packet buffer */
+ uint16_t len = uip_datalen();
+ char *ptr = uip_appdata;
+ uint32_t base = ne.socket * RINGSIZ * 2;
+
+ if ( (s->rend + 1)&(NSOCKBUF-1) == s->rstart )
+ return; /* full - drop it */
+ s->rsize[s->rend] = len;
+ memcpy( &ne.info, s->rsize, sizeof(uint16_t) * NSOCKBUF );
+ lseek( bfd, base + s->rend * RXPKTSIZ, SEEK_SET );
+ if ( write( bfd, ptr, len ) < 0 )
+ exit_err("cannot write to backing file\n");
+ if ( ++s->rend == NSOCKBUF )
+ s->rend = 0;
+ /* FIXME: throttle incoming data if there's no room in ring buf */
+ /* tell kernel we have data */
+ ne.data = s->rend;
+ /* ne.info = ???; for udp only? */
+ ksend( NE_DATA );
+ }
+}
+
+
+/* unused (for now) */
+void uip_log(char *m)
+{
+ fprintf( stderr, "uIP: %s\n", m);
+}
+
+
+/* handle events from kernel */
+/* returns 0 if nothing going on */
+int dokernel( void )
+{
+ struct link *m;
+ int i = read( knet, &sm, sizeof(sm) );
+ if ( i < 0 ){
+ return 0;
+ }
+ else if ( i == sizeof( sm ) && sm.sd.event & 127 ){
+ /* debug
+ fprintf(stderr,"read size: %d ", i );
+ fprintf(stderr,"knet lcn: %d ", sm.sd.lcn );
+ fprintf(stderr,"event: %x ", sm.sd.event );
+ fprintf(stderr,"newstat: %x\n", sm.sd.newstate );
+ */
+ m = & map[sm.sd.lcn];
+ if ( sm.sd.event & NEV_STATE ){
+ ne.socket = sm.s.s_num;
+ switch ( sm.sd.newstate ){
+ case SS_UNCONNECTED:
+ ne.data = get_map(); /* becomes lcn */
+ map[ne.data].len = 0;
+ map[ne.data].socketn = sm.s.s_num;
+ ksend( NE_INIT );
+ break;
+ case SS_BOUND:
+ /* FIXME: probably needs to do something here */
+ ne.data = SS_BOUND;
+ ksend( NE_NEWSTATE );
+ break;
+ case SS_CONNECTING:
+ if ( sm.s.s_type == SOCKTYPE_TCP ){
+ struct uip_conn *conptr;
+ uip_ipaddr_t addr;
+ int port = sm.s.s_addr[SADDR_DST].port;
+ uip_ipaddr_copy( &addr, (uip_ipaddr_t *)
+ &sm.s.s_addr[SADDR_DST].addr );
+ /* need some HTONS'ing done here? */
+ conptr = uip_connect( &addr, port );
+ if ( !conptr ){
+ break; /* fixme: actually handler the error */
+ }
+ m->conn = conptr; /* fixme: needed? */
+ conptr->appstate = sm.sd.lcn;
+ break;
+ }
+ else if ( sm.s.s_type == SOCKTYPE_UDP ){
+ struct uip_udp_conn *conptr;
+ uip_ipaddr_t addr;
+ int port = sm.s.s_addr[SADDR_DST].port;
+ uip_ipaddr_copy( &addr, (uip_ipaddr_t *)
+ &sm.s.s_addr[SADDR_DST].addr );
+ /* need some HTONS'ing done here? */
+ conptr = uip_udp_new( &addr, port );
+ if ( !conptr ){
+ break; /* fixme: actually handler the error */
+ }
+ m->conn = ( struct uip_conn *)conptr; /* fixme: needed? */
+ conptr->appstate = sm.sd.lcn;
+ /* fixme: assign local address/port !!! */
+ /* refactor: same as tcp action from connect event */
+ ne.data = SS_CONNECTED;
+ ksend( NE_NEWSTATE );
+ break;
+ }
+ break; /* FIXME: handle unknown/unhandled sock types here */
+ case SS_CLOSED:
+ if ( sm.s.s_type == SOCKTYPE_TCP ){
+ m->flags += LINK_SHUTW;
+ /* if remote already closed then send closing synch event
+ directly back to kernel, and release our link */
+ if ( m->flags & LINK_SHUTR ){
+ ne.data = SS_CLOSED;
+ ksend( NE_NEWSTATE );
+ rel_map( sm.sd.lcn );
+ }
+ /* tell uIP thread that local has closed, but we
+ cant send anything directly to uIP from here -
+ so set a flag and let uip_poll() handler do the job
+ the next time through the main program loop
+ */
+ else {
+ m->flags += LINK_CLOSED;
+ }
+ }
+ else if ( sm.s.s_type == SOCKTYPE_UDP ){
+ m->flags += LINK_CLOSED;
+ }
+ break;
+ case SS_LISTENING:
+ /* htons here? */
+ uip_listen( sm.s.s_addr[0].port );
+ m->port = sm.s.s_addr[0].port;
+ ne.data = SS_LISTENING;
+ ksend( NE_NEWSTATE );
+ break;
+ default:
+ break;
+ }
+ }
+ if ( sm.sd.event & NEV_WRITE ){
+ /* can't send data now, so store needed buffer info */
+ int last;
+ m->tstart = sm.sd.tbuf;
+ m->tend = sm.sd.tnext;
+ last = m->tend-1 & NSOCKBUF-1;
+ /* tsize is for udp only, but copy it anyway */
+ m->tsize[last] = sm.sd.tlen[last];
+ }
+ if ( sm.sd.event & NEV_READ ){
+ int last;
+ m->rstart = sm.sd.rbuf;
+ m->rend = sm.sd.rnext;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+/* handle events from uIP */
+/* returns 0 if nothing going on */
+int douip( void )
+{
+ int ret = 0;
+ int i = device_read( uip_buf, UIP_BUFSIZE );
+ if (i > 0){
+ ret = 1;
+ uip_len = i;
+ if (uip_len > 0) {
+ if ( BUF->type == UIP_HTONS(UIP_ETHTYPE_IP)){
+ uip_arp_ipin();
+ uip_input();
+ if (uip_len > 0) {
+ uip_arp_out();
+ device_send( uip_buf, uip_len);
+ }
+ }else if ( BUF->type == UIP_HTONS(UIP_ETHTYPE_ARP)){
+ uip_arp_arpin();
+ if (uip_len > 0 )
+ device_send( uip_buf, uip_len);
+ }
+ }
+ } else if (timer_expired(&periodic_timer)) {
+ timer_reset(&periodic_timer);
+ for (i = 0; i < UIP_CONNS; i++) {
+ uip_periodic(i);
+ if (uip_len > 0) {
+ uip_arp_out();
+ device_send( uip_buf, uip_len );
+ }
+ }
+ for (i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if (uip_len > 0) {
+ uip_arp_out();
+ device_send( uip_buf, uip_len );
+ }
+ }
+ if ( timer_expired(&arp_timer)){
+ timer_reset(&arp_timer);
+ uip_arp_timer();
+ }
+ }
+ return ret;
+}
+
+
+
+
+/* Get charactor from rc file */
+/* returns charactor from file, -1 on EOF */
+int mygetc( )
+{
+ static char *ibuf[80];
+ static char *pos;
+ static int len = 0;
+ if ( ! len ){
+ pos = (char *)ibuf;
+ len = read( rc, ibuf, 80 );
+ if( len < -1 )
+ exit_err( "Error Reading rc file.\n" );
+ if( ! len )
+ return -1;
+ }
+ len--;
+ return *pos++;
+}
+
+/* parse next token from rc file */
+/* return -1 on EOF, */
+int word( char *buf, int max)
+{
+ int c;
+ int len = 0;
+
+ max -= 1;
+ /* skip spaces */
+ do {
+ c = mygetc();
+ if ( c < 0 )
+ return -1;
+ } while ( isspace( c ) );
+ /* build token */
+ while ( ! isspace( c ) && c != -1 && len < max ){
+ *buf++ = c;
+ len++;
+ c = mygetc();
+ }
+ *buf = 0;
+ return 0;
+}
+
+/* parse a mac address from rc file */
+/* need dynamic conversion base ? */
+int macaddrconv( char *buf, uip_eth_addr *addr )
+{
+ int i;
+ char *e;
+ for ( i = 0; i < 6; i++){
+ addr->addr[i] = strtol( buf, &e, 16 );
+ if ( e == buf )
+ return 0;
+ buf = ++e;
+ }
+ return -1;
+}
+
+/* return various errors for rcfile problems */
+void exit_badrc( void )
+{
+ exit_err("error reading rc file\n" );
+}
+
+void exit_badaddr( void )
+{
+ exit_err("rc file: bad address" );
+}
+
+/* get ip address from rc file */
+int getaddr( uip_ipaddr_t *ipaddr )
+{
+ char buf[80];
+ if ( word( buf, 80 ) )
+ exit_badrc();
+ if ( ! uiplib_ip4addrconv( buf, ipaddr) )
+ exit_badaddr();
+ return -1;
+}
+
+
+/* read, parse, and apply rc file */
+int parse_rcfile( void ){
+
+ int x;
+ char buf[80];
+ uip_ipaddr_t ipaddr; /* ip address buffer */
+ uip_eth_addr ethaddr; /* mac address buffer */
+
+ rc = open("/etc/netrc", O_RDONLY, 0 );
+ if ( rc < 0 ){
+ exit_err("cannot open rc file\n");
+ }
+ while ( ! word( buf, 80 ) ){
+ if ( ! strcmp( buf, "ipaddr" ) ){
+ getaddr( &ipaddr );
+ uip_sethostaddr(&ipaddr);
+ continue;
+ }
+ if ( ! strcmp( buf, "gateway" ) ){
+ getaddr( &ipaddr );
+ uip_setdraddr(&ipaddr);
+ continue;
+ }
+ if ( ! strcmp( buf, "netmask" ) ){
+ getaddr( &ipaddr );
+ uip_setnetmask(&ipaddr);
+ continue;
+ }
+ if ( ! strcmp( buf, "mac" ) ){
+ if ( word( buf, 80 ) )
+ exit_badrc();
+ if ( ! macaddrconv( buf, ðaddr ) )
+ exit_err("bad mac address\n");
+ uip_setethaddr( ethaddr );
+ continue;
+ }
+ if ( buf[0]== '#' ){
+ int c;
+ do {
+ c = mygetc();
+ } while ( c != '\n' && c != -1 );
+ }
+ }
+ close(rc);
+ return 0;
+}
+
+
+
+int main( int argc, char *argv[] )
+{
+ int ret;
+ uip_ipaddr_t ipaddr;
+ uip_eth_addr ethaddr; /* mac address buffer */
+
+ /* where should backing file go? /var, /tmp, other? */
+ bfd = open( "/tmp/net.back", O_RDWR|O_CREAT, 0644 );
+ if ( bfd < 0 ){
+ exit_err( "cannot open backing file\n");
+ }
+
+ /*open Kernel's net device */
+ knet = open( "/dev/net", O_RDWR|O_NDELAY, 0 );
+ if ( knet < 0 ){
+ exit_err( "cannot open kernel net iface device\n");
+ }
+
+ /* Attach our backing file to the network device */
+ ret = ioctl( knet, NET_INIT, &bfd );
+ if ( ret < 0 ){
+ exit_err( "cannot attach backing file\n");
+ }
+
+ /* initialize our map */
+ init_map();
+
+
+ /*
+ * Set up uIP
+ */
+
+ timer_set(&periodic_timer, CLOCK_SECOND / 4);
+ timer_set(&arp_timer, CLOCK_SECOND * 10 );
+
+ uip_init();
+
+ /*
+ * set default addresses structures for uIP.
+ */
+
+ /* set hostname - need a config file or cmd line here */
+ /* what are a good defaults here? */
+ uip_ipaddr(&ipaddr, 192,168,42,2);
+ uip_sethostaddr(&ipaddr);
+ uip_ipaddr(&ipaddr, 192,168,42,1);
+ uip_setdraddr(&ipaddr);
+ uip_ipaddr(&ipaddr, 255,255,255,0);
+ uip_setnetmask(&ipaddr);
+
+ /* set default MAC address */
+ ethaddr.addr[0] = 0x00;
+ ethaddr.addr[1] = 0x01;
+ ethaddr.addr[2] = 0x02;
+ ethaddr.addr[3] = 0x03;
+ ethaddr.addr[4] = 0x04;
+ ethaddr.addr[5] = 0x05;
+ uip_setethaddr(ethaddr);
+
+
+ parse_rcfile();
+
+ if( device_init() ){
+ exit_err( "cannot init net device\n");
+ }
+
+
+ while(1) {
+ int a,b;
+ a = dokernel();
+ b = douip();
+ if( ! (a || b) )
+ _pause(3);
+ }
+}
--- /dev/null
+/* dwnet.h interface
+
+
+
+ */
+#ifndef DWNET_H
+#define DWNET_H
+
+struct link{
+ uint8_t flags; /* flags */
+#define LINK_CLOSED 1
+#define LINK_SHUTR 2 /* don't release our link/state until */
+#define LINK_SHUTW 4 /* both are set */
+ uint8_t socketn; /* Kernel's socket no */
+ uint8_t lcn; /* Kernel's idea of lcn ???*/
+ struct uip_conn *conn; /* uIP's idea of lcn */
+ uint16_t tstart; /* start of data in transmit ring */
+ uint16_t tend; /* end of data in transmit ring */
+ uint16_t len; /* length of data last transmitted */
+ uint16_t rstart; /* start of data in recv ring */
+ uint16_t rend; /* end of data in recv ring*/
+ uint16_t port; /* which port are we listening on? */
+ /* for udp only */
+ uint16_t tsize[NSOCKBUF]; /* number of bytes to xmit in buffer */
+ uint16_t rsize[NSOCKBUF]; /* number of bytes to recv in buffers */
+};
+
+
+typedef uint8_t uip_tcp_appstate_t; /* index to link info */
+typedef uint8_t uip_udp_appstate_t;
+void netd_appcall( void );
+void netd_udp_appcall( void );
+
+#endif
--- /dev/null
+ /* Copyright (C) 1996-2004, 2009, 2010 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* All data returned by the network data base library are supplied in
+ host order and returned in network order (suitable for use in
+ system calls). */
+
+
+/* Modified for fuzix by Brett M. Gordon */
+
+#ifndef _NETDB_H
+#define _NETDB_H
+
+/* Description of data base entry for a single host. */
+struct hostent
+{
+ char *h_name; /* Official name of host. */
+ char **h_aliases; /* Alias list. */
+ int h_addrtype; /* Host address type. */
+ int h_length; /* Length of address. */
+ char **h_addr_list; /* List of addresses from name server. */
+};
+
+extern int h_errno;
+
+/* Possible values left in `h_errno'. */
+#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found. */
+#define TRY_AGAIN 2 /* Non-Authoritative Host not found,
+ or SERVERFAIL. */
+#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED,
+ NOTIMP. */
+#define NO_DATA 4 /* Valid name, no data record of requested
+ type. */
+
+
+extern struct hostent *gethostbyname (char *name);
+
+
+
+#endif /* netdb.h */
--- /dev/null
+# netd rc file
+# Please change to suite.
+ipaddr 192.168.42.2
+gateway 192.168.42.1
+netmask 255.255.255.0
+mac 0:1:2:3:4:5
--- /dev/null
+nameserver 192.168.1.1
--- /dev/null
+/* dwtelnet - Drivewire - raw Telnet
+ */
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include "netdb.h"
+
+
+#define TESC 0x19
+#define ESC 0x1b
+
+
+char ibuf[256];
+int opos=0;
+
+int flags;
+struct termios prior,new;
+struct termios lprior,lnew;
+int fddw;
+int para[4]={0,0,0,0};
+int no=0;
+char colors[8]={
+ '0', '2', '4', '6',
+ '1', '3', '5', '7'
+};
+
+int linemode=0;
+int lecho=-1;
+int hex=0;
+int del=0;
+int crnl=-1;
+int fc=7;
+int bc=0;
+int inten=0;
+
+#define AF_INET 1
+#define SOCK_STREAM 3
+
+
+struct sockaddr_in addr;
+struct sockaddr_in laddr;
+
+void puterr( char *str ){
+ write(2, str, strlen(str));
+}
+
+void putstr( char *str ){
+ write(1, str, strlen(str));
+}
+
+int isnum( char c ){
+ if( c>='0' && c<='9' ) return 1;
+ return 0;
+}
+
+int tonum( char c ){
+ return c-'0';
+}
+
+void out52( char c ){
+ write(1, "\x1b", 1 );
+ write(1,&c, 1 );
+}
+
+void out52n( char c, char n ){
+ out52( c );
+ write(1,&n, 1 );
+}
+
+void out52nn( char c, char n, char m){
+ out52( c );
+ write(1,&n,1);
+ write(1,&m,1);
+}
+
+
+char cconv( char c ){
+ return colors[c];
+}
+
+
+/* check for matching fore/background colors w/ intensity bit
+ we can't do intensity - so text disappears */
+void ckint(){
+ if( (fc == bc) && inten ){
+ fc = fc + 1 & 0x7 ;
+ out52n( 'b', fc );
+ }
+}
+
+/* Send a char to the console, processing for ANSI/TELNET chars */
+void charout( char c ){
+ static char mode=0;
+ int i;
+
+ switch( mode ){
+ /* normal mode */
+ case 0:
+ if( c == 255 ){
+ mode=3;
+ return;
+ }
+ if( c != ESC ) write( 1, &c ,1 );
+ else{
+ mode=1;
+ }
+ return;
+ /* ESC detected */
+ case 1:
+ if( c=='[' ){
+ mode=2;
+ return;
+ }
+ return;
+ /* Multi-byte detected */
+ case 2:
+ if( isnum(c) ){
+ para[no]=para[no]*10+tonum(c);
+ return;
+ }
+ if( c == ';' ){
+ no++;
+ return;
+ }
+ no++;
+ goto final;
+ /* Telnet IAC detected */
+ case 3:
+ switch( c ){
+ case 255:
+ write(1,&c,1);
+ mode=0;
+ return;
+
+ case 251:
+ mode=5;
+ return;
+ case 252:
+ mode=6;
+ return;
+ case 253:
+ case 254:
+ if(hex) printf("<IAC><%x>",c);
+ mode=4;
+ return;
+ }
+ mode=0;
+ return;
+ /* send Telnet's WILLNOTs to server */
+ case 4:
+ if( hex )printf("<%x>\n", c );
+ write( fddw, "\xff\xfc",2);
+ write( fddw, &c, 1 );
+ mode = 0;
+ return;
+ /* received a WILL */
+ case 5:
+ if( c == 1 ){
+ lecho = 0;
+ //write(fddw,"\xff\xfd",2);
+ //write(fddw, &c, 1 );
+ mode = 0;
+ return;
+ }
+ write( fddw,"\xff\xfe",2);
+ write( fddw, &c, 1);
+ mode = 0;
+ return;
+ /* received a WONT */
+ case 6:
+ if( hex ) printf("opt<%x>\n", c );
+ if( c == 1 ) lecho = -1;
+ else{
+ write( fddw, "\xff\xfe", 2 );
+ write( fddw, &c, 1 );
+ }
+ mode = 0;
+ return;
+
+ }
+ /* and the trailing command */
+ final:
+ // printf("DEBUG: %d %d %d %c\n", para[0], para[1], para[2], c);
+ switch( c ){
+ case 'J':
+ if( para[0] == 2 ){
+ out52( 'H' );
+ out52( 'J' );
+ break;
+ }
+ if( para[1] == 0 ){
+ out52( 'J' );
+ break;
+ }
+ case 'H':
+ case 'f':
+ if( para[0]==0 && para[1]==0 ){
+ out52( 'H' );
+ break;
+ }
+ if( para[0]==0 ) para[0]=1;
+ if( para[1]==0 ) para[1]=1;
+ out52nn( 'Y', para[0]+' ', para[1]+' ');
+ break;
+ case 'K':
+ if( para[0] == 0 ){
+ out52( 'K');
+ break;
+ }
+ case 'm':
+ for( i=0; i<no; i++ ){
+ if( para[i]>=30 && para[i]<=37 ){
+ fc=cconv(para[i]-30);
+ out52n( 'b', fc );
+ ckint();
+ }
+ if( para[i]>=40 && para[i]<=47 ){
+ bc=cconv(para[i]-40);
+ out52n( 'c', bc );
+ ckint();
+ }
+ if( para[i]==0 ){
+ out52n( 'b', '4' );
+ out52n( 'c', '0' );
+ inten=0;
+ }
+ if( para[i]==1 ){
+ inten=1;
+ ckint();
+ }
+ }
+ break;
+ case 'C':
+ case 'D':
+ case 'A':
+ case 'B':
+ if( para[0]==0 ) para[0]=1;
+ for( i=0; i<para[0]; i++) out52(c);
+ break;
+ case 'n':
+ if( para[0]==6 ){
+ write(fddw,"\x1b[1;1R",6);
+ out52( 'H' );
+ out52( 'J' );
+ }
+ break;
+ // default:
+
+ }
+ para[0]=0;
+ para[1]=0;
+ para[2]=0;
+ para[3]=0;
+ no=0;
+ mode = 0;
+}
+
+/* print string to console under ANSI/TELNET */
+int mywrite( char *ptr, int len ){
+ int i=len;
+ while( i-- ) charout( *ptr++ );
+ return len;
+}
+
+void quit(){
+ tcsetattr( 0, TCSANOW, &lprior );
+ fcntl(0, F_SETFL, flags );
+ close( fddw );
+ exit(0);
+}
+
+/* Add string to input buffer */
+void addstr(char *s){
+ for( ; ibuf[opos++]=*s; s++ )
+ if( lecho ) write(1,s,1);
+ opos--;
+}
+
+void printd( char *s ){
+ while( *s ) write( 1, s++, 1);
+ write( 1, "\n", 1 );
+}
+
+void printhelp( void ){
+ printd( "l linemode toggle" );
+ printd( "e echo toggle");
+ printd( "q quit");
+ printd( "h IAC TELNET hex debugging");
+ printd( "n NL / CRNL");
+ printd( "^A send ^A to remote");
+}
+
+/* Read from standard input, nonblocking */
+int myread( void ){
+ static int icount=0;
+ static int ipos=0;
+ static char kbuf[256];
+ static int mode=0;
+ static int cmode=0;
+ int l;
+
+ switch( mode ){
+ case 0: // waiting for input buffer to fill middle
+ l=read( 0, kbuf, 256 );
+ if( ! l ) return 0;
+ if( l < 0 ){
+ if( errno == EAGAIN ){
+ return 0;
+ }
+ else
+ quit();
+ }
+ ipos=0;
+ icount=l;
+ mode=1;
+ case 1: // processing middle buffer to input buffer
+ for( ; ipos<icount; ipos++ ){
+ char c=kbuf[ipos];
+ if( cmode ){
+ switch( c ){
+ /*
+ case '1':
+ addstr( "tcp connect " );
+ break;
+ case '2':
+ addstr( "nostalgiamud.l-w.ca 4000");
+ break;
+ case '3':
+ addstr( "aardmud.org 23" );
+ break;
+ case '4':
+ addstr( "vert.synchro.net 23" );
+ break;
+ case '5':
+ addstr( "madworld.bounceme.net 6400");
+ break;
+ */
+ case 'l':
+ linemode = ~linemode ;
+ break;
+ case 'e':
+ lecho = ~lecho;
+ break;
+ case 'q':
+ quit();
+ case 'h':
+ hex= ~hex;
+ break;
+ case 'd':
+ del= ~del;
+ break;
+ case 'n':
+ crnl= ~crnl;
+ break;
+ case 1:
+ ibuf[opos++]=1;
+ break;
+ case '?':
+ printhelp();
+ break;
+ }
+ cmode=0;
+ continue;
+ }
+ if( c == 1 ){
+ cmode=1;
+ continue;
+ }
+ if( linemode ){
+ if( c == 8 ){
+ if( opos ){
+ opos--;
+ write(1,"\b \b",3);
+ continue;
+ }
+ continue;
+ }
+ write(1,&c,1);
+ if( c == '\n' ){
+ int t=opos;
+ opos=0;
+ ibuf[t]=c;
+ ipos++;
+ return ++t;
+ }
+ ibuf[opos++]=c;
+ continue;
+ }
+ if( lecho ) write(1,&c,1);
+ if( (c == 8) && del ){
+ ibuf[opos++]=127;
+ continue;
+ }
+ if( (c== 0x0a) && crnl ){
+ ibuf[opos++]=0x0d;
+ ibuf[opos++]=0x0a;
+ continue;
+ }
+ ibuf[opos++]=c;
+ continue;
+ }
+ mode=0;
+ if( ! linemode ){
+ int t=opos;
+ opos=0;
+ return t;
+ }
+ return 0;
+ }
+}
+
+my_open( int argc, char *argv[]){
+ int port = 23; /* default port */
+ struct hostent *h;
+
+ if( argc == 3 )
+ port = atol(argv[2] );
+
+ addr.sin_port = htons(port);
+ addr.sin_family = AF_INET;
+
+ h=gethostbyname( argv[1] );
+ if( ! h ){
+ write(2, "cannot resolve hostname\n", 24 );
+ exit(1);
+ }
+ memcpy( &addr.sin_addr.s_addr, h->h_addr_list[0], 4 );
+
+ fddw = socket(AF_INET, SOCK_STREAM, 0);
+ if (fddw < 0) {
+ perror("af_inet sock_stream 0");
+ exit(1);
+ }
+
+ if (connect(fddw, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("connect");
+ exit(1);
+ }
+ fcntl( fddw, F_SETFL, O_NDELAY );
+}
+
+int main( int argc, char *argv[]){
+ int len;
+
+ if( argc < 2 ){
+ write(2, "telnet: server [port]\n", 22 );
+ exit(1);
+ }
+
+ tcgetattr( 0, &lprior );
+
+ my_open( argc, argv );
+
+ flags = fcntl(0, F_GETFL, 0);
+ fcntl(0, F_SETFL, flags | O_NDELAY );
+
+
+ tcgetattr( 0, &lnew );
+ lnew.c_lflag &= ~ICANON;
+ lnew.c_lflag &= ~ECHO;
+ tcsetattr( 0, TCSANOW, &lnew );
+
+ printf("Use Cntl-A ? for help.\n");
+
+ while(1){
+ char *pos=ibuf;
+ len=myread();
+ while( len > 0 ){
+ int ret = write( fddw, pos, len );
+ if( ret < 0 ){
+ if( errno == EAGAIN ){
+ ret=0;
+ }
+ else
+ quit();
+ }
+ len=len-ret;
+ pos+=ret;
+ }
+ len=read( fddw, ibuf, 127 );
+ if( ! len )
+ quit();
+ if( len < 0 ){
+ if( errno != EAGAIN ){
+ quit();
+ }
+ }
+ pos = ibuf;
+ while( len > 0){
+ int ret = mywrite( pos, len );
+ if( ret < 0 ){
+ if( errno == EWOULDBLOCK ){
+ ret=0;
+ }
+ else quit();
+ }
+ len=len-ret;
+ pos+=ret;
+ }
+ }
+}
+
+
+
--- /dev/null
+/**
+ * \addtogroup timer
+ * @{
+ */
+
+/**
+ * \file
+ * Timer library implementation.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+
+/*
+ * Copyright (c) 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. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: timer.c,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+
+#include "clock.h"
+#include "timer.h"
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Set a timer.
+ *
+ * This function is used to set a timer for a time sometime in the
+ * future. The function timer_expired() will evaluate to true after
+ * the timer has expired.
+ *
+ * \param t A pointer to the timer
+ * \param interval The interval before the timer expires.
+ *
+ */
+void
+timer_set(struct timer *t, clock_time_t interval)
+{
+ t->interval = interval;
+ t->start = clock_time();
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Reset the timer with the same interval.
+ *
+ * This function resets the timer with the same interval that was
+ * given to the timer_set() function. The start point of the interval
+ * is the exact time that the timer last expired. Therefore, this
+ * function will cause the timer to be stable over time, unlike the
+ * timer_rester() function.
+ *
+ * \param t A pointer to the timer.
+ *
+ * \sa timer_restart()
+ */
+void
+timer_reset(struct timer *t)
+{
+ t->start += t->interval;
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Restart the timer from the current point in time
+ *
+ * This function restarts a timer with the same interval that was
+ * given to the timer_set() function. The timer will start at the
+ * current time.
+ *
+ * \note A periodic timer will drift if this function is used to reset
+ * it. For preioric timers, use the timer_reset() function instead.
+ *
+ * \param t A pointer to the timer.
+ *
+ * \sa timer_reset()
+ */
+void
+timer_restart(struct timer *t)
+{
+ t->start = clock_time();
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Check if a timer has expired.
+ *
+ * This function tests if a timer has expired and returns true or
+ * false depending on its status.
+ *
+ * \param t A pointer to the timer
+ *
+ * \return Non-zero if the timer has expired, zero otherwise.
+ *
+ */
+int
+timer_expired(struct timer *t)
+{
+ return (clock_time_t)(clock_time() - t->start) >= (clock_time_t)t->interval;
+}
+/*---------------------------------------------------------------------------*/
+
+/** @} */
--- /dev/null
+/**
+ * \defgroup timer Timer library
+ *
+ * The timer library provides functions for setting, resetting and
+ * restarting timers, and for checking if a timer has expired. An
+ * application must "manually" check if its timers have expired; this
+ * is not done automatically.
+ *
+ * A timer is declared as a \c struct \c timer and all access to the
+ * timer is made by a pointer to the declared timer.
+ *
+ * \note The timer library uses the \ref clock "Clock library" to
+ * measure time. Intervals should be specified in the format used by
+ * the clock library.
+ *
+ * @{
+ */
+
+
+/**
+ * \file
+ * Timer library header file.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+
+/*
+ * Copyright (c) 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. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: timer.h,v 1.3 2006/06/11 21:46:39 adam Exp $
+ */
+#ifndef __TIMER_H__
+#define __TIMER_H__
+
+#include "clock.h"
+
+/**
+ * A timer.
+ *
+ * This structure is used for declaring a timer. The timer must be set
+ * with timer_set() before it can be used.
+ *
+ * \hideinitializer
+ */
+struct timer {
+ clock_time_t start;
+ clock_time_t interval;
+};
+
+void timer_set(struct timer *t, clock_time_t interval);
+void timer_reset(struct timer *t);
+void timer_restart(struct timer *t);
+int timer_expired(struct timer *t);
+
+#endif /* __TIMER_H__ */
+
+/** @} */
--- /dev/null
+/*
+ * Copyright (c) 2001-2003, Adam Dunkels.
+ * 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 uIP TCP/IP stack.
+ *
+ *
+ */
+
+/**
+ * \file
+ * The uIP TCP/IP stack code.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+#define DEBUG_PRINTF(...) /*printf(__VA_ARGS__)*/
+
+/*
+ * uIP is a small implementation of the IP, UDP and TCP protocols (as
+ * well as some basic ICMP stuff). The implementation couples the IP,
+ * UDP, TCP and the application layers very tightly. To keep the size
+ * of the compiled code down, this code frequently uses the goto
+ * statement. While it would be possible to break the uip_process()
+ * function into many smaller functions, this would increase the code
+ * size because of the overhead of parameter passing and the fact that
+ * the optimier would not be as efficient.
+ *
+ * The principle is that we have a small buffer, called the uip_buf,
+ * in which the device driver puts an incoming packet. The TCP/IP
+ * stack parses the headers in the packet, and calls the
+ * application. If the remote host has sent data to the application,
+ * this data is present in the uip_buf and the application read the
+ * data from there. It is up to the application to put this data into
+ * a byte stream if needed. The application will not be fed with data
+ * that is out of sequence.
+ *
+ * If the application whishes to send data to the peer, it should put
+ * its data into the uip_buf. The uip_appdata pointer points to the
+ * first available byte. The TCP/IP stack will calculate the
+ * checksums, and fill in the necessary header fields and finally send
+ * the packet back to the peer.
+*/
+
+#include "uip.h"
+#include "uipopt.h"
+#include "uip_arp.h"
+#include "uip_arch.h"
+
+// #include "../ipv4/uip-neighbor.h"
+
+#include <string.h>
+// #include "../ip/cc.h"
+
+/*---------------------------------------------------------------------------*/
+/* Variable definitions. */
+
+
+/* The IP address of this host. If it is defined to be fixed (by
+ setting UIP_FIXEDADDR to 1 in uipopt.h), the address is set
+ here. Otherwise, the address */
+#if UIP_FIXEDADDR > 0
+const uip_ipaddr_t uip_hostaddr =
+ { UIP_IPADDR0, UIP_IPADDR1, UIP_IPADDR2, UIP_IPADDR3 };
+const uip_ipaddr_t uip_draddr =
+ { UIP_DRIPADDR0, UIP_DRIPADDR1, UIP_DRIPADDR2, UIP_DRIPADDR3 };
+const uip_ipaddr_t uip_netmask =
+ { UIP_NETMASK0, UIP_NETMASK1, UIP_NETMASK2, UIP_NETMASK3 };
+#else
+uip_ipaddr_t uip_hostaddr, uip_draddr, uip_netmask;
+#endif /* UIP_FIXEDADDR */
+
+const uip_ipaddr_t uip_broadcast_addr =
+#if NETSTACK_CONF_WITH_IPV6
+ { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ { { 0xff, 0xff, 0xff, 0xff } };
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+const uip_ipaddr_t uip_all_zeroes_addr = { { 0x0, /* rest is 0 */ } };
+
+#if UIP_FIXEDETHADDR
+const uip_lladdr_t uip_lladdr = {{UIP_ETHADDR0,
+ UIP_ETHADDR1,
+ UIP_ETHADDR2,
+ UIP_ETHADDR3,
+ UIP_ETHADDR4,
+ UIP_ETHADDR5}};
+#else
+uip_lladdr_t uip_lladdr = {{0,0,0,0,0,0}};
+#endif
+
+/* The packet buffer that contains incoming packets. */
+uip_buf_t uip_aligned_buf;
+
+void *uip_appdata; /* The uip_appdata pointer points to
+ application data. */
+void *uip_sappdata; /* The uip_appdata pointer points to
+ the application data which is to
+ be sent. */
+#if UIP_URGDATA > 0
+void *uip_urgdata; /* The uip_urgdata pointer points to
+ urgent data (out-of-band data), if
+ present. */
+uint16_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+uint16_t uip_len, uip_slen;
+ /* The uip_len is either 8 or 16 bits,
+ depending on the maximum packet
+ size. */
+
+uint8_t uip_flags; /* The uip_flags variable is used for
+ communication between the TCP/IP stack
+ and the application program. */
+struct uip_conn *uip_conn; /* uip_conn always points to the current
+ connection. */
+
+struct uip_conn uip_conns[UIP_CONNS];
+ /* The uip_conns array holds all TCP
+ connections. */
+uint16_t uip_listenports[UIP_LISTENPORTS];
+ /* The uip_listenports list all currently
+ listning ports. */
+#if UIP_UDP
+struct uip_udp_conn *uip_udp_conn;
+struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+#endif /* UIP_UDP */
+
+static uint16_t ipid; /* Ths ipid variable is an increasing
+ number that is used for the IP ID
+ field. */
+
+void uip_setipid(uint16_t id) { ipid = id; }
+
+static uint8_t iss[4]; /* The iss variable is used for the TCP
+ initial sequence number. */
+
+#if UIP_ACTIVE_OPEN || UIP_UDP
+static uint16_t lastport; /* Keeps track of the last port used for
+ a new connection. */
+#endif /* UIP_ACTIVE_OPEN || UIP_UDP */
+
+/* Temporary variables. */
+uint8_t uip_acc32[4];
+static uint8_t c, opt;
+static uint16_t tmp16;
+
+/* Structures and definitions. */
+#define TCP_FIN 0x01
+#define TCP_SYN 0x02
+#define TCP_RST 0x04
+#define TCP_PSH 0x08
+#define TCP_ACK 0x10
+#define TCP_URG 0x20
+#define TCP_CTL 0x3f
+
+#define TCP_OPT_END 0 /* End of TCP options list */
+#define TCP_OPT_NOOP 1 /* "No-operation" TCP option */
+#define TCP_OPT_MSS 2 /* Maximum segment size TCP option */
+
+#define TCP_OPT_MSS_LEN 4 /* Length of TCP MSS option. */
+
+#define ICMP_ECHO_REPLY 0
+#define ICMP_ECHO 8
+
+#define ICMP_DEST_UNREACHABLE 3
+#define ICMP_PORT_UNREACHABLE 3
+
+#define ICMP6_ECHO_REPLY 129
+#define ICMP6_ECHO 128
+#define ICMP6_NEIGHBOR_SOLICITATION 135
+#define ICMP6_NEIGHBOR_ADVERTISEMENT 136
+
+#define ICMP6_FLAG_S (1 << 6)
+
+#define ICMP6_OPTION_SOURCE_LINK_ADDRESS 1
+#define ICMP6_OPTION_TARGET_LINK_ADDRESS 2
+
+
+/* Macros. */
+#define BUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
+#define FBUF ((struct uip_tcpip_hdr *)&uip_reassbuf[0])
+#define ICMPBUF ((struct uip_icmpip_hdr *)&uip_buf[UIP_LLH_LEN])
+#define UDPBUF ((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])
+
+
+#if UIP_STATISTICS == 1
+struct uip_stats uip_stat;
+#define UIP_STAT(s) s
+#else
+#define UIP_STAT(s)
+#endif /* UIP_STATISTICS == 1 */
+
+#if UIP_LOGGING == 1
+#include <stdio.h>
+void uip_log(char *msg);
+#define UIP_LOG(m) uip_log(m)
+#else
+#define UIP_LOG(m)
+#endif /* UIP_LOGGING == 1 */
+
+#if ! UIP_ARCH_ADD32
+void
+uip_add32(uint8_t *op32, uint16_t op16)
+{
+ uip_acc32[3] = op32[3] + (op16 & 0xff);
+ uip_acc32[2] = op32[2] + (op16 >> 8);
+ uip_acc32[1] = op32[1];
+ uip_acc32[0] = op32[0];
+
+ if(uip_acc32[2] < (op16 >> 8)) {
+ ++uip_acc32[1];
+ if(uip_acc32[1] == 0) {
+ ++uip_acc32[0];
+ }
+ }
+
+
+ if(uip_acc32[3] < (op16 & 0xff)) {
+ ++uip_acc32[2];
+ if(uip_acc32[2] == 0) {
+ ++uip_acc32[1];
+ if(uip_acc32[1] == 0) {
+ ++uip_acc32[0];
+ }
+ }
+ }
+}
+
+#endif /* UIP_ARCH_ADD32 */
+
+#if ! UIP_ARCH_CHKSUM
+/*---------------------------------------------------------------------------*/
+static uint16_t
+chksum(uint16_t sum, const uint8_t *data, uint16_t len)
+{
+ uint16_t t;
+ const uint8_t *dataptr;
+ const uint8_t *last_byte;
+
+ dataptr = data;
+ last_byte = data + len - 1;
+
+ while(dataptr < last_byte) { /* At least two more bytes */
+ t = (dataptr[0] << 8) + dataptr[1];
+ sum += t;
+ if(sum < t) {
+ sum++; /* carry */
+ }
+ dataptr += 2;
+ }
+
+ if(dataptr == last_byte) {
+ t = (dataptr[0] << 8) + 0;
+ sum += t;
+ if(sum < t) {
+ sum++; /* carry */
+ }
+ }
+
+ /* Return sum in host byte order. */
+ return sum;
+}
+/*---------------------------------------------------------------------------*/
+uint16_t
+uip_chksum(uint16_t *data, uint16_t len)
+{
+ return uip_htons(chksum(0, (uint8_t *)data, len));
+}
+/*---------------------------------------------------------------------------*/
+#ifndef UIP_ARCH_IPCHKSUM
+uint16_t
+uip_ipchksum(void)
+{
+ uint16_t sum;
+
+ sum = chksum(0, &uip_buf[UIP_LLH_LEN], UIP_IPH_LEN);
+ DEBUG_PRINTF("uip_ipchksum: sum 0x%04x\n", sum);
+ return (sum == 0) ? 0xffff : uip_htons(sum);
+}
+#endif
+/*---------------------------------------------------------------------------*/
+static uint16_t
+upper_layer_chksum(uint8_t proto)
+{
+ uint16_t upper_layer_len;
+ uint16_t sum;
+
+#if NETSTACK_CONF_WITH_IPV6
+ upper_layer_len = (((uint16_t)(BUF->len[0]) << 8) + BUF->len[1]);
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ upper_layer_len = (((uint16_t)(BUF->len[0]) << 8) + BUF->len[1]) - UIP_IPH_LEN;
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ /* First sum pseudoheader. */
+
+ /* IP protocol and length fields. This addition cannot carry. */
+ sum = upper_layer_len + proto;
+ /* Sum IP source and destination addresses. */
+ sum = chksum(sum, (uint8_t *)&BUF->srcipaddr, 2 * sizeof(uip_ipaddr_t));
+
+ /* Sum TCP header and data. */
+ sum = chksum(sum, &uip_buf[UIP_IPH_LEN + UIP_LLH_LEN],
+ upper_layer_len);
+
+ return (sum == 0) ? 0xffff : uip_htons(sum);
+}
+/*---------------------------------------------------------------------------*/
+#if NETSTACK_CONF_WITH_IPV6
+uint16_t
+uip_icmp6chksum(void)
+{
+ return upper_layer_chksum(UIP_PROTO_ICMP6);
+
+}
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+/*---------------------------------------------------------------------------*/
+uint16_t
+uip_tcpchksum(void)
+{
+ return upper_layer_chksum(UIP_PROTO_TCP);
+}
+/*---------------------------------------------------------------------------*/
+#if UIP_UDP_CHECKSUMS
+uint16_t
+uip_udpchksum(void)
+{
+ return upper_layer_chksum(UIP_PROTO_UDP);
+}
+#endif /* UIP_UDP_CHECKSUMS */
+#endif /* UIP_ARCH_CHKSUM */
+/*---------------------------------------------------------------------------*/
+void
+uip_init(void)
+{
+ for(c = 0; c < UIP_LISTENPORTS; ++c) {
+ uip_listenports[c] = 0;
+ }
+ for(c = 0; c < UIP_CONNS; ++c) {
+ uip_conns[c].tcpstateflags = UIP_CLOSED;
+ }
+#if UIP_ACTIVE_OPEN || UIP_UDP
+ lastport = 1024;
+#endif /* UIP_ACTIVE_OPEN || UIP_UDP */
+
+#if UIP_UDP
+ for(c = 0; c < UIP_UDP_CONNS; ++c) {
+ uip_udp_conns[c].lport = 0;
+ }
+#endif /* UIP_UDP */
+
+
+ /* IPv4 initialization. */
+#if UIP_FIXEDADDR == 0
+ /* uip_hostaddr[0] = uip_hostaddr[1] = 0;*/
+#endif /* UIP_FIXEDADDR */
+
+}
+/*---------------------------------------------------------------------------*/
+#if UIP_ACTIVE_OPEN
+struct uip_conn *
+uip_connect(const uip_ipaddr_t *ripaddr, uint16_t rport)
+{
+ register struct uip_conn *conn, *cconn;
+
+ /* Find an unused local port. */
+ again:
+ ++lastport;
+
+ if(lastport >= 32000) {
+ lastport = 4096;
+ }
+
+ /* Check if this port is already in use, and if so try to find
+ another one. */
+ for(c = 0; c < UIP_CONNS; ++c) {
+ conn = &uip_conns[c];
+ if(conn->tcpstateflags != UIP_CLOSED &&
+ conn->lport == uip_htons(lastport)) {
+ goto again;
+ }
+ }
+
+ conn = 0;
+ for(c = 0; c < UIP_CONNS; ++c) {
+ cconn = &uip_conns[c];
+ if(cconn->tcpstateflags == UIP_CLOSED) {
+ conn = cconn;
+ break;
+ }
+ if(cconn->tcpstateflags == UIP_TIME_WAIT) {
+ if(conn == 0 ||
+ cconn->timer > conn->timer) {
+ conn = cconn;
+ }
+ }
+ }
+
+ if(conn == 0) {
+ return 0;
+ }
+
+ conn->tcpstateflags = UIP_SYN_SENT;
+
+ conn->snd_nxt[0] = iss[0];
+ conn->snd_nxt[1] = iss[1];
+ conn->snd_nxt[2] = iss[2];
+ conn->snd_nxt[3] = iss[3];
+
+ conn->rcv_nxt[0] = 0;
+ conn->rcv_nxt[1] = 0;
+ conn->rcv_nxt[2] = 0;
+ conn->rcv_nxt[3] = 0;
+
+ conn->initialmss = conn->mss = UIP_TCP_MSS;
+
+ conn->len = 1; /* TCP length of the SYN is one. */
+ conn->nrtx = 0;
+ conn->timer = 1; /* Send the SYN next time around. */
+ conn->rto = UIP_RTO;
+ conn->sa = 0;
+ conn->sv = 16; /* Initial value of the RTT variance. */
+ conn->lport = uip_htons(lastport);
+ conn->rport = rport;
+ uip_ipaddr_copy(&conn->ripaddr, ripaddr);
+
+ return conn;
+}
+#endif /* UIP_ACTIVE_OPEN */
+/*---------------------------------------------------------------------------*/
+#if UIP_UDP
+struct uip_udp_conn *
+uip_udp_new(const uip_ipaddr_t *ripaddr, uint16_t rport)
+{
+ register struct uip_udp_conn *conn;
+
+ /* Find an unused local port. */
+ again:
+ ++lastport;
+
+ if(lastport >= 32000) {
+ lastport = 4096;
+ }
+
+ for(c = 0; c < UIP_UDP_CONNS; ++c) {
+ if(uip_udp_conns[c].lport == uip_htons(lastport)) {
+ goto again;
+ }
+ }
+
+
+ conn = 0;
+ for(c = 0; c < UIP_UDP_CONNS; ++c) {
+ if(uip_udp_conns[c].lport == 0) {
+ conn = &uip_udp_conns[c];
+ break;
+ }
+ }
+
+ if(conn == 0) {
+ return 0;
+ }
+
+ conn->lport = UIP_HTONS(lastport);
+ conn->rport = rport;
+ if(ripaddr == NULL) {
+ memset(&conn->ripaddr, 0, sizeof(uip_ipaddr_t));
+ } else {
+ uip_ipaddr_copy(&conn->ripaddr, ripaddr);
+ }
+ conn->ttl = UIP_TTL;
+
+ return conn;
+}
+#endif /* UIP_UDP */
+/*---------------------------------------------------------------------------*/
+void
+uip_unlisten(uint16_t port)
+{
+ for(c = 0; c < UIP_LISTENPORTS; ++c) {
+ if(uip_listenports[c] == port) {
+ uip_listenports[c] = 0;
+ return;
+ }
+ }
+}
+/*---------------------------------------------------------------------------*/
+void
+uip_listen(uint16_t port)
+{
+ for(c = 0; c < UIP_LISTENPORTS; ++c) {
+ if(uip_listenports[c] == 0) {
+ uip_listenports[c] = port;
+ return;
+ }
+ }
+}
+/*---------------------------------------------------------------------------*/
+/* XXX: IP fragment reassembly: not well-tested. */
+
+#if UIP_REASSEMBLY && !NETSTACK_CONF_WITH_IPV6
+#define UIP_REASS_BUFSIZE (UIP_BUFSIZE - UIP_LLH_LEN)
+static uint8_t uip_reassbuf[UIP_REASS_BUFSIZE];
+static uint8_t uip_reassbitmap[UIP_REASS_BUFSIZE / (8 * 8)];
+static const uint8_t bitmap_bits[8] = {0xff, 0x7f, 0x3f, 0x1f,
+ 0x0f, 0x07, 0x03, 0x01};
+static uint16_t uip_reasslen;
+static uint8_t uip_reassflags;
+#define UIP_REASS_FLAG_LASTFRAG 0x01
+static uint8_t uip_reasstmr;
+
+#define IP_MF 0x20
+
+static uint8_t
+uip_reass(void)
+{
+ uint16_t offset, len;
+ uint16_t i;
+
+ /* If ip_reasstmr is zero, no packet is present in the buffer, so we
+ write the IP header of the fragment into the reassembly
+ buffer. The timer is updated with the maximum age. */
+ if(uip_reasstmr == 0) {
+ memcpy(uip_reassbuf, &BUF->vhl, UIP_IPH_LEN);
+ uip_reasstmr = UIP_REASS_MAXAGE;
+ uip_reassflags = 0;
+ /* Clear the bitmap. */
+ memset(uip_reassbitmap, 0, sizeof(uip_reassbitmap));
+ }
+
+ /* Check if the incoming fragment matches the one currently present
+ in the reasembly buffer. If so, we proceed with copying the
+ fragment into the buffer. */
+ if(BUF->srcipaddr[0] == FBUF->srcipaddr[0] &&
+ BUF->srcipaddr[1] == FBUF->srcipaddr[1] &&
+ BUF->destipaddr[0] == FBUF->destipaddr[0] &&
+ BUF->destipaddr[1] == FBUF->destipaddr[1] &&
+ BUF->ipid[0] == FBUF->ipid[0] &&
+ BUF->ipid[1] == FBUF->ipid[1]) {
+
+ len = (BUF->len[0] << 8) + BUF->len[1] - (BUF->vhl & 0x0f) * 4;
+ offset = (((BUF->ipoffset[0] & 0x3f) << 8) + BUF->ipoffset[1]) * 8;
+
+ /* If the offset or the offset + fragment length overflows the
+ reassembly buffer, we discard the entire packet. */
+ if(offset > UIP_REASS_BUFSIZE ||
+ offset + len > UIP_REASS_BUFSIZE) {
+ uip_reasstmr = 0;
+ goto nullreturn;
+ }
+
+ /* Copy the fragment into the reassembly buffer, at the right
+ offset. */
+ memcpy(&uip_reassbuf[UIP_IPH_LEN + offset],
+ (char *)BUF + (int)((BUF->vhl & 0x0f) * 4),
+ len);
+
+ /* Update the bitmap. */
+ if(offset / (8 * 8) == (offset + len) / (8 * 8)) {
+ /* If the two endpoints are in the same byte, we only update
+ that byte. */
+
+ uip_reassbitmap[offset / (8 * 8)] |=
+ bitmap_bits[(offset / 8 ) & 7] &
+ ~bitmap_bits[((offset + len) / 8 ) & 7];
+ } else {
+ /* If the two endpoints are in different bytes, we update the
+ bytes in the endpoints and fill the stuff inbetween with
+ 0xff. */
+ uip_reassbitmap[offset / (8 * 8)] |=
+ bitmap_bits[(offset / 8 ) & 7];
+ for(i = 1 + offset / (8 * 8); i < (offset + len) / (8 * 8); ++i) {
+ uip_reassbitmap[i] = 0xff;
+ }
+ uip_reassbitmap[(offset + len) / (8 * 8)] |=
+ ~bitmap_bits[((offset + len) / 8 ) & 7];
+ }
+
+ /* If this fragment has the More Fragments flag set to zero, we
+ know that this is the last fragment, so we can calculate the
+ size of the entire packet. We also set the
+ IP_REASS_FLAG_LASTFRAG flag to indicate that we have received
+ the final fragment. */
+
+ if((BUF->ipoffset[0] & IP_MF) == 0) {
+ uip_reassflags |= UIP_REASS_FLAG_LASTFRAG;
+ uip_reasslen = offset + len;
+ }
+
+ /* Finally, we check if we have a full packet in the buffer. We do
+ this by checking if we have the last fragment and if all bits
+ in the bitmap are set. */
+ if(uip_reassflags & UIP_REASS_FLAG_LASTFRAG) {
+ /* Check all bytes up to and including all but the last byte in
+ the bitmap. */
+ for(i = 0; i < uip_reasslen / (8 * 8) - 1; ++i) {
+ if(uip_reassbitmap[i] != 0xff) {
+ goto nullreturn;
+ }
+ }
+ /* Check the last byte in the bitmap. It should contain just the
+ right amount of bits. */
+ if(uip_reassbitmap[uip_reasslen / (8 * 8)] !=
+ (uint8_t)~bitmap_bits[uip_reasslen / 8 & 7]) {
+ goto nullreturn;
+ }
+
+ /* If we have come this far, we have a full packet in the
+ buffer, so we allocate a pbuf and copy the packet into it. We
+ also reset the timer. */
+ uip_reasstmr = 0;
+ memcpy(BUF, FBUF, uip_reasslen);
+
+ /* Pretend to be a "normal" (i.e., not fragmented) IP packet
+ from now on. */
+ BUF->ipoffset[0] = BUF->ipoffset[1] = 0;
+ BUF->len[0] = uip_reasslen >> 8;
+ BUF->len[1] = uip_reasslen & 0xff;
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~(uip_ipchksum());
+
+ return uip_reasslen;
+ }
+ }
+
+ nullreturn:
+ return 0;
+}
+#endif /* UIP_REASSEMBLY */
+/*---------------------------------------------------------------------------*/
+static void
+uip_add_rcv_nxt(uint16_t n)
+{
+ uip_add32(uip_conn->rcv_nxt, n);
+ uip_conn->rcv_nxt[0] = uip_acc32[0];
+ uip_conn->rcv_nxt[1] = uip_acc32[1];
+ uip_conn->rcv_nxt[2] = uip_acc32[2];
+ uip_conn->rcv_nxt[3] = uip_acc32[3];
+}
+/*---------------------------------------------------------------------------*/
+void
+uip_process(uint8_t flag)
+{
+ register struct uip_conn *uip_connr = uip_conn;
+
+#if UIP_UDP
+ if(flag == UIP_UDP_SEND_CONN) {
+ goto udp_send;
+ }
+#endif /* UIP_UDP */
+
+ uip_sappdata = uip_appdata = &uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN];
+
+ /* Check if we were invoked because of a poll request for a
+ particular connection. */
+ if(flag == UIP_POLL_REQUEST) {
+ if((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED &&
+ !uip_outstanding(uip_connr)) {
+ uip_flags = UIP_POLL;
+ UIP_APPCALL();
+ goto appsend;
+#if UIP_ACTIVE_OPEN && UIP_TCP
+ } else if((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_SYN_SENT) {
+ /* In the SYN_SENT state, we retransmit out SYN. */
+ BUF->flags = 0;
+ goto tcp_send_syn;
+#endif /* UIP_ACTIVE_OPEN */
+ }
+ goto drop;
+
+ /* Check if we were invoked because of the periodic timer firing. */
+ } else if(flag == UIP_TIMER) {
+#if UIP_REASSEMBLY
+ if(uip_reasstmr != 0) {
+ --uip_reasstmr;
+ }
+#endif /* UIP_REASSEMBLY */
+ /* Increase the initial sequence number. */
+ if(++iss[3] == 0) {
+ if(++iss[2] == 0) {
+ if(++iss[1] == 0) {
+ ++iss[0];
+ }
+ }
+ }
+
+ /* Reset the length variables. */
+ uip_clear_buf();
+ uip_slen = 0;
+
+#if UIP_TCP
+ /* Check if the connection is in a state in which we simply wait
+ for the connection to time out. If so, we increase the
+ connection's timer and remove the connection if it times
+ out. */
+ if(uip_connr->tcpstateflags == UIP_TIME_WAIT ||
+ uip_connr->tcpstateflags == UIP_FIN_WAIT_2) {
+ ++(uip_connr->timer);
+ if(uip_connr->timer == UIP_TIME_WAIT_TIMEOUT) {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ }
+ } else if(uip_connr->tcpstateflags != UIP_CLOSED) {
+ /* If the connection has outstanding data, we increase the
+ connection's timer and see if it has reached the RTO value
+ in which case we retransmit. */
+
+ if(uip_outstanding(uip_connr)) {
+ if(uip_connr->timer-- == 0) {
+ if(uip_connr->nrtx == UIP_MAXRTX ||
+ ((uip_connr->tcpstateflags == UIP_SYN_SENT ||
+ uip_connr->tcpstateflags == UIP_SYN_RCVD) &&
+ uip_connr->nrtx == UIP_MAXSYNRTX)) {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+
+ /* We call UIP_APPCALL() with uip_flags set to
+ UIP_TIMEDOUT to inform the application that the
+ connection has timed out. */
+ uip_flags = UIP_TIMEDOUT;
+ UIP_APPCALL();
+
+ /* We also send a reset packet to the remote host. */
+ BUF->flags = TCP_RST | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ /* Exponential backoff. */
+ uip_connr->timer = UIP_RTO << (uip_connr->nrtx > 4?
+ 4:
+ uip_connr->nrtx);
+ ++(uip_connr->nrtx);
+
+ /* Ok, so we need to retransmit. We do this differently
+ depending on which state we are in. In ESTABLISHED, we
+ call upon the application so that it may prepare the
+ data for the retransmit. In SYN_RCVD, we resend the
+ SYNACK that we sent earlier and in LAST_ACK we have to
+ retransmit our FINACK. */
+ UIP_STAT(++uip_stat.tcp.rexmit);
+ switch(uip_connr->tcpstateflags & UIP_TS_MASK) {
+ case UIP_SYN_RCVD:
+ /* In the SYN_RCVD state, we should retransmit our
+ SYNACK. */
+ goto tcp_send_synack;
+
+#if UIP_ACTIVE_OPEN
+ case UIP_SYN_SENT:
+ /* In the SYN_SENT state, we retransmit out SYN. */
+ BUF->flags = 0;
+ goto tcp_send_syn;
+#endif /* UIP_ACTIVE_OPEN */
+
+ case UIP_ESTABLISHED:
+ /* In the ESTABLISHED state, we call upon the application
+ to do the actual retransmit after which we jump into
+ the code for sending out the packet (the apprexmit
+ label). */
+ uip_flags = UIP_REXMIT;
+ UIP_APPCALL();
+ goto apprexmit;
+
+ case UIP_FIN_WAIT_1:
+ case UIP_CLOSING:
+ case UIP_LAST_ACK:
+ /* In all these states we should retransmit a FINACK. */
+ goto tcp_send_finack;
+
+ }
+ }
+ } else if((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED) {
+ /* If there was no need for a retransmission, we poll the
+ application for new data. */
+ uip_flags = UIP_POLL;
+ UIP_APPCALL();
+ goto appsend;
+ }
+ }
+#endif
+ goto drop;
+ }
+#if UIP_UDP
+ if(flag == UIP_UDP_TIMER) {
+ if(uip_udp_conn->lport != 0) {
+ uip_conn = NULL;
+ uip_sappdata = uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
+ uip_len = uip_slen = 0;
+ uip_flags = UIP_POLL;
+ UIP_UDP_APPCALL();
+ goto udp_send;
+ } else {
+ goto drop;
+ }
+ }
+#endif
+
+ /* This is where the input processing starts. */
+ UIP_STAT(++uip_stat.ip.recv);
+
+ /* Start of IP input header processing code. */
+
+#if NETSTACK_CONF_WITH_IPV6
+ /* Check validity of the IP header. */
+ if((BUF->vtc & 0xf0) != 0x60) { /* IP version and header length. */
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.vhlerr);
+ UIP_LOG("ipv6: invalid version.");
+ goto drop;
+ }
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ /* Check validity of the IP header. */
+ if(BUF->vhl != 0x45) { /* IP version and header length. */
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.vhlerr);
+ UIP_LOG("ip: invalid version or header length.");
+ goto drop;
+ }
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ /* Check the size of the packet. If the size reported to us in
+ uip_len is smaller the size reported in the IP header, we assume
+ that the packet has been corrupted in transit. If the size of
+ uip_len is larger than the size reported in the IP packet header,
+ the packet has been padded and we set uip_len to the correct
+ value. */
+
+ if((BUF->len[0] << 8) + BUF->len[1] <= uip_len) {
+ uip_len = (BUF->len[0] << 8) + BUF->len[1];
+#if NETSTACK_CONF_WITH_IPV6
+ uip_len += 40; /* The length reported in the IPv6 header is the
+ length of the payload that follows the
+ header. However, uIP uses the uip_len variable
+ for holding the size of the entire packet,
+ including the IP header. For IPv4 this is not a
+ problem as the length field in the IPv4 header
+ contains the length of the entire packet. But
+ for IPv6 we need to add the size of the IPv6
+ header (40 bytes). */
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+ } else {
+ UIP_LOG("ip: packet shorter than reported in IP header.");
+ goto drop;
+ }
+
+#if !NETSTACK_CONF_WITH_IPV6
+ /* Check the fragment flag. */
+ if((BUF->ipoffset[0] & 0x3f) != 0 ||
+ BUF->ipoffset[1] != 0) {
+#if UIP_REASSEMBLY
+ uip_len = uip_reass();
+ if(uip_len == 0) {
+ goto drop;
+ }
+#else /* UIP_REASSEMBLY */
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.fragerr);
+ UIP_LOG("ip: fragment dropped.");
+ goto drop;
+#endif /* UIP_REASSEMBLY */
+ }
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ if(uip_ipaddr_cmp(&uip_hostaddr, &uip_all_zeroes_addr)) {
+ /* If we are configured to use ping IP address configuration and
+ haven't been assigned an IP address yet, we accept all ICMP
+ packets. */
+#if UIP_PINGADDRCONF && !NETSTACK_CONF_WITH_IPV6
+ if(BUF->proto == UIP_PROTO_ICMP) {
+ UIP_LOG("ip: possible ping config packet received.");
+ goto icmp_input;
+ } else {
+ UIP_LOG("ip: packet dropped since no address assigned.");
+ goto drop;
+ }
+#endif /* UIP_PINGADDRCONF */
+
+ } else {
+ /* If IP broadcast support is configured, we check for a broadcast
+ UDP packet, which may be destined to us. */
+#if UIP_BROADCAST
+ DEBUG_PRINTF("UDP IP checksum 0x%04x\n", uip_ipchksum());
+ if(BUF->proto == UIP_PROTO_UDP &&
+ (uip_ipaddr_cmp(&BUF->destipaddr, &uip_broadcast_addr) ||
+ (BUF->destipaddr.u8[0] & 224) == 224)) { /* XXX this is a
+ hack to be able
+ to receive UDP
+ multicast
+ packets. We check
+ for the bit
+ pattern of the
+ multicast
+ prefix. */
+ goto udp_input;
+ }
+#endif /* UIP_BROADCAST */
+
+ /* Check if the packet is destined for our IP address. */
+#if !NETSTACK_CONF_WITH_IPV6
+ if(!uip_ipaddr_cmp(&BUF->destipaddr, &uip_hostaddr)) {
+ UIP_STAT(++uip_stat.ip.drop);
+ goto drop;
+ }
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ /* For IPv6, packet reception is a little trickier as we need to
+ make sure that we listen to certain multicast addresses (all
+ hosts multicast address, and the solicited-node multicast
+ address) as well. However, we will cheat here and accept all
+ multicast packets that are sent to the ff02::/16 addresses. */
+ if(!uip_ipaddr_cmp(&BUF->destipaddr, &uip_hostaddr) &&
+ BUF->destipaddr.u16[0] != UIP_HTONS(0xff02)) {
+ UIP_STAT(++uip_stat.ip.drop);
+ goto drop;
+ }
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+ }
+
+#if !NETSTACK_CONF_WITH_IPV6
+ if(uip_ipchksum() != 0xffff) { /* Compute and check the IP header
+ checksum. */
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.chkerr);
+ UIP_LOG("ip: bad checksum.");
+ goto drop;
+ }
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+#if UIP_TCP
+ if(BUF->proto == UIP_PROTO_TCP) { /* Check for TCP packet. If so,
+ proceed with TCP input
+ processing. */
+ goto tcp_input;
+ }
+#endif
+
+#if UIP_UDP
+ if(BUF->proto == UIP_PROTO_UDP) {
+ goto udp_input;
+ }
+#endif /* UIP_UDP */
+
+#if !NETSTACK_CONF_WITH_IPV6
+ /* ICMPv4 processing code follows. */
+ if(BUF->proto != UIP_PROTO_ICMP) { /* We only allow ICMP packets from
+ here. */
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.protoerr);
+ UIP_LOG("ip: neither tcp nor icmp.");
+ goto drop;
+ }
+
+#if UIP_PINGADDRCONF
+ icmp_input:
+#endif /* UIP_PINGADDRCONF */
+ UIP_STAT(++uip_stat.icmp.recv);
+
+ /* ICMP echo (i.e., ping) processing. This is simple, we only change
+ the ICMP type from ECHO to ECHO_REPLY and adjust the ICMP
+ checksum before we return the packet. */
+ if(ICMPBUF->type != ICMP_ECHO) {
+ UIP_STAT(++uip_stat.icmp.drop);
+ UIP_STAT(++uip_stat.icmp.typeerr);
+ UIP_LOG("icmp: not icmp echo.");
+ goto drop;
+ }
+
+ /* If we are configured to use ping IP address assignment, we use
+ the destination IP address of this ping packet and assign it to
+ ourself. */
+#if UIP_PINGADDRCONF
+ if(uip_ipaddr_cmp(&uip_hostaddr, &uip_all_zeroes_addr)) {
+ uip_hostaddr = BUF->destipaddr;
+ }
+#endif /* UIP_PINGADDRCONF */
+
+ ICMPBUF->type = ICMP_ECHO_REPLY;
+
+ if(ICMPBUF->icmpchksum >= UIP_HTONS(0xffff - (ICMP_ECHO << 8))) {
+ ICMPBUF->icmpchksum += UIP_HTONS(ICMP_ECHO << 8) + 1;
+ } else {
+ ICMPBUF->icmpchksum += UIP_HTONS(ICMP_ECHO << 8);
+ }
+
+ /* Swap IP addresses. */
+ uip_ipaddr_copy(&BUF->destipaddr, &BUF->srcipaddr);
+ uip_ipaddr_copy(&BUF->srcipaddr, &uip_hostaddr);
+
+ UIP_STAT(++uip_stat.icmp.sent);
+ BUF->ttl = UIP_TTL;
+ goto ip_send_nolen;
+
+ /* End of IPv4 input header processing code. */
+#else /* !NETSTACK_CONF_WITH_IPV6 */
+
+ /* This is IPv6 ICMPv6 processing code. */
+ DEBUG_PRINTF("icmp6_input: length %d\n", uip_len);
+
+ if(BUF->proto != UIP_PROTO_ICMP6) { /* We only allow ICMPv6 packets from
+ here. */
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.protoerr);
+ UIP_LOG("ip: neither tcp nor icmp6.");
+ goto drop;
+ }
+
+ UIP_STAT(++uip_stat.icmp.recv);
+
+ /* If we get a neighbor solicitation for our address we should send
+ a neighbor advertisement message back. */
+ if(ICMPBUF->type == ICMP6_NEIGHBOR_SOLICITATION) {
+ if(uip_ipaddr_cmp(&ICMPBUF->icmp6data, &uip_hostaddr)) {
+
+ if(ICMPBUF->options[0] == ICMP6_OPTION_SOURCE_LINK_ADDRESS) {
+ /* Save the sender's address in our neighbor list. */
+ uip_neighbor_add(&ICMPBUF->srcipaddr, &(ICMPBUF->options[2]));
+ }
+
+ /* We should now send a neighbor advertisement back to where the
+ neighbor solicication came from. */
+ ICMPBUF->type = ICMP6_NEIGHBOR_ADVERTISEMENT;
+ ICMPBUF->flags = ICMP6_FLAG_S; /* Solicited flag. */
+
+ ICMPBUF->reserved1 = ICMPBUF->reserved2 = ICMPBUF->reserved3 = 0;
+
+ uip_ipaddr_copy(&ICMPBUF->destipaddr, &ICMPBUF->srcipaddr);
+ uip_ipaddr_copy(&ICMPBUF->srcipaddr, &uip_hostaddr);
+ ICMPBUF->options[0] = ICMP6_OPTION_TARGET_LINK_ADDRESS;
+ ICMPBUF->options[1] = 1; /* Options length, 1 = 8 bytes. */
+ memcpy(&(ICMPBUF->options[2]), &uip_lladdr, sizeof(uip_lladdr));
+ ICMPBUF->icmpchksum = 0;
+ ICMPBUF->icmpchksum = ~uip_icmp6chksum();
+
+ goto send;
+
+ }
+ goto drop;
+ } else if(ICMPBUF->type == ICMP6_ECHO) {
+ /* ICMP echo (i.e., ping) processing. This is simple, we only
+ change the ICMP type from ECHO to ECHO_REPLY and update the
+ ICMP checksum before we return the packet. */
+
+ ICMPBUF->type = ICMP6_ECHO_REPLY;
+
+ uip_ipaddr_copy(&BUF->destipaddr, &BUF->srcipaddr);
+ uip_ipaddr_copy(&BUF->srcipaddr, &uip_hostaddr);
+ ICMPBUF->icmpchksum = 0;
+ ICMPBUF->icmpchksum = ~uip_icmp6chksum();
+
+ UIP_STAT(++uip_stat.icmp.sent);
+ goto send;
+ } else {
+ DEBUG_PRINTF("Unknown icmp6 message type %d\n", ICMPBUF->type);
+ UIP_STAT(++uip_stat.icmp.drop);
+ UIP_STAT(++uip_stat.icmp.typeerr);
+ UIP_LOG("icmp: unknown ICMP message.");
+ goto drop;
+ }
+
+ /* End of IPv6 ICMP processing. */
+
+#endif /* !NETSTACK_CONF_WITH_IPV6 */
+
+#if UIP_UDP
+ /* UDP input processing. */
+ udp_input:
+ /* UDP processing is really just a hack. We don't do anything to the
+ UDP/IP headers, but let the UDP application do all the hard
+ work. If the application sets uip_slen, it has a packet to
+ send. */
+#if UIP_UDP_CHECKSUMS
+ uip_len = uip_len - UIP_IPUDPH_LEN;
+ uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
+ if(UDPBUF->udpchksum != 0 && uip_udpchksum() != 0xffff) {
+ UIP_STAT(++uip_stat.udp.drop);
+ UIP_STAT(++uip_stat.udp.chkerr);
+ UIP_LOG("udp: bad checksum.");
+ goto drop;
+ }
+#else /* UIP_UDP_CHECKSUMS */
+ uip_len = uip_len - UIP_IPUDPH_LEN;
+#endif /* UIP_UDP_CHECKSUMS */
+
+ /* Make sure that the UDP destination port number is not zero. */
+ if(UDPBUF->destport == 0) {
+ UIP_LOG("udp: zero port.");
+ goto drop;
+ }
+
+ /* Demultiplex this UDP packet between the UDP "connections". */
+ for(uip_udp_conn = &uip_udp_conns[0];
+ uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS];
+ ++uip_udp_conn) {
+ /* If the local UDP port is non-zero, the connection is considered
+ to be used. If so, the local port number is checked against the
+ destination port number in the received packet. If the two port
+ numbers match, the remote port number is checked if the
+ connection is bound to a remote port. Finally, if the
+ connection is bound to a remote IP address, the source IP
+ address of the packet is checked. */
+ if(uip_udp_conn->lport != 0 &&
+ UDPBUF->destport == uip_udp_conn->lport &&
+ (uip_udp_conn->rport == 0 ||
+ UDPBUF->srcport == uip_udp_conn->rport) &&
+ (uip_ipaddr_cmp(&uip_udp_conn->ripaddr, &uip_all_zeroes_addr) ||
+ uip_ipaddr_cmp(&uip_udp_conn->ripaddr, &uip_broadcast_addr) ||
+ uip_ipaddr_cmp(&BUF->srcipaddr, &uip_udp_conn->ripaddr))) {
+ goto udp_found;
+ }
+ }
+ UIP_LOG("udp: no matching connection found");
+ UIP_STAT(++uip_stat.udp.drop);
+#if UIP_CONF_ICMP_DEST_UNREACH && !NETSTACK_CONF_WITH_IPV6
+ /* Copy fields from packet header into payload of this ICMP packet. */
+ memcpy(&(ICMPBUF->payload[0]), ICMPBUF, UIP_IPH_LEN + 8);
+
+ /* Set the ICMP type and code. */
+ ICMPBUF->type = ICMP_DEST_UNREACHABLE;
+ ICMPBUF->icode = ICMP_PORT_UNREACHABLE;
+
+ /* Calculate the ICMP checksum. */
+ ICMPBUF->icmpchksum = 0;
+ ICMPBUF->icmpchksum = ~uip_chksum((uint16_t *)&(ICMPBUF->type), 36);
+
+ /* Set the IP destination address to be the source address of the
+ original packet. */
+ uip_ipaddr_copy(&BUF->destipaddr, &BUF->srcipaddr);
+
+ /* Set our IP address as the source address. */
+ uip_ipaddr_copy(&BUF->srcipaddr, &uip_hostaddr);
+
+ /* The size of the ICMP destination unreachable packet is 36 + the
+ size of the IP header (20) = 56. */
+ uip_len = 36 + UIP_IPH_LEN;
+ ICMPBUF->len[0] = 0;
+ ICMPBUF->len[1] = (uint8_t)uip_len;
+ ICMPBUF->ttl = UIP_TTL;
+ ICMPBUF->proto = UIP_PROTO_ICMP;
+
+ goto ip_send_nolen;
+#else /* UIP_CONF_ICMP_DEST_UNREACH */
+ goto drop;
+#endif /* UIP_CONF_ICMP_DEST_UNREACH */
+
+ udp_found:
+ UIP_STAT(++uip_stat.udp.recv);
+ uip_conn = NULL;
+ uip_flags = UIP_NEWDATA;
+ uip_sappdata = uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
+ uip_slen = 0;
+ UIP_UDP_APPCALL();
+
+ udp_send:
+ if(uip_slen == 0) {
+ goto drop;
+ }
+ uip_len = uip_slen + UIP_IPUDPH_LEN;
+
+#if NETSTACK_CONF_WITH_IPV6
+ /* For IPv6, the IP length field does not include the IPv6 IP header
+ length. */
+ BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8);
+ BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff);
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ BUF->len[0] = (uip_len >> 8);
+ BUF->len[1] = (uip_len & 0xff);
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ BUF->ttl = uip_udp_conn->ttl;
+ BUF->proto = UIP_PROTO_UDP;
+
+ UDPBUF->udplen = UIP_HTONS(uip_slen + UIP_UDPH_LEN);
+ UDPBUF->udpchksum = 0;
+
+ BUF->srcport = uip_udp_conn->lport;
+ BUF->destport = uip_udp_conn->rport;
+
+ uip_ipaddr_copy(&BUF->srcipaddr, &uip_hostaddr);
+ uip_ipaddr_copy(&BUF->destipaddr, &uip_udp_conn->ripaddr);
+
+ uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPTCPH_LEN];
+
+#if UIP_UDP_CHECKSUMS
+ /* Calculate UDP checksum. */
+ UDPBUF->udpchksum = ~(uip_udpchksum());
+ if(UDPBUF->udpchksum == 0) {
+ UDPBUF->udpchksum = 0xffff;
+ }
+#endif /* UIP_UDP_CHECKSUMS */
+
+ UIP_STAT(++uip_stat.udp.sent);
+ goto ip_send_nolen;
+#endif /* UIP_UDP */
+
+ /* TCP input processing. */
+#if UIP_TCP
+ tcp_input:
+ UIP_STAT(++uip_stat.tcp.recv);
+
+ /* Start of TCP input header processing code. */
+
+ if(uip_tcpchksum() != 0xffff) { /* Compute and check the TCP
+ checksum. */
+ UIP_STAT(++uip_stat.tcp.drop);
+ UIP_STAT(++uip_stat.tcp.chkerr);
+ UIP_LOG("tcp: bad checksum.");
+ goto drop;
+ }
+
+ /* Make sure that the TCP port number is not zero. */
+ if(BUF->destport == 0 || BUF->srcport == 0) {
+ UIP_LOG("tcp: zero port.");
+ goto drop;
+ }
+
+ /* Demultiplex this segment. */
+ /* First check any active connections. */
+ for(uip_connr = &uip_conns[0]; uip_connr <= &uip_conns[UIP_CONNS - 1];
+ ++uip_connr) {
+ if(uip_connr->tcpstateflags != UIP_CLOSED &&
+ BUF->destport == uip_connr->lport &&
+ BUF->srcport == uip_connr->rport &&
+ uip_ipaddr_cmp(&BUF->srcipaddr, &uip_connr->ripaddr)) {
+ goto found;
+ }
+ }
+
+ /* If we didn't find an active connection that expected the packet,
+ either this packet is an old duplicate, or this is a SYN packet
+ destined for a connection in LISTEN. If the SYN flag isn't set,
+ it is an old packet and we send a RST. */
+ if((BUF->flags & TCP_CTL) != TCP_SYN) {
+ goto reset;
+ }
+
+ tmp16 = BUF->destport;
+ /* Next, check listening connections. */
+ for(c = 0; c < UIP_LISTENPORTS; ++c) {
+ if(tmp16 == uip_listenports[c]) {
+ goto found_listen;
+ }
+ }
+
+ /* No matching connection found, so we send a RST packet. */
+ UIP_STAT(++uip_stat.tcp.synrst);
+
+ reset:
+ /* We do not send resets in response to resets. */
+ if(BUF->flags & TCP_RST) {
+ goto drop;
+ }
+
+ UIP_STAT(++uip_stat.tcp.rst);
+
+ BUF->flags = TCP_RST | TCP_ACK;
+ uip_len = UIP_IPTCPH_LEN;
+ BUF->tcpoffset = 5 << 4;
+
+ /* Flip the seqno and ackno fields in the TCP header. */
+ c = BUF->seqno[3];
+ BUF->seqno[3] = BUF->ackno[3];
+ BUF->ackno[3] = c;
+
+ c = BUF->seqno[2];
+ BUF->seqno[2] = BUF->ackno[2];
+ BUF->ackno[2] = c;
+
+ c = BUF->seqno[1];
+ BUF->seqno[1] = BUF->ackno[1];
+ BUF->ackno[1] = c;
+
+ c = BUF->seqno[0];
+ BUF->seqno[0] = BUF->ackno[0];
+ BUF->ackno[0] = c;
+
+ /* We also have to increase the sequence number we are
+ acknowledging. If the least significant byte overflowed, we need
+ to propagate the carry to the other bytes as well. */
+ if(++BUF->ackno[3] == 0) {
+ if(++BUF->ackno[2] == 0) {
+ if(++BUF->ackno[1] == 0) {
+ ++BUF->ackno[0];
+ }
+ }
+ }
+
+ /* Swap port numbers. */
+ tmp16 = BUF->srcport;
+ BUF->srcport = BUF->destport;
+ BUF->destport = tmp16;
+
+ /* Swap IP addresses. */
+ uip_ipaddr_copy(&BUF->destipaddr, &BUF->srcipaddr);
+ uip_ipaddr_copy(&BUF->srcipaddr, &uip_hostaddr);
+
+ /* And send out the RST packet! */
+ goto tcp_send_noconn;
+
+ /* This label will be jumped to if we matched the incoming packet
+ with a connection in LISTEN. In that case, we should create a new
+ connection and send a SYNACK in return. */
+ found_listen:
+ /* First we check if there are any connections avaliable. Unused
+ connections are kept in the same table as used connections, but
+ unused ones have the tcpstate set to CLOSED. Also, connections in
+ TIME_WAIT are kept track of and we'll use the oldest one if no
+ CLOSED connections are found. Thanks to Eddie C. Dost for a very
+ nice algorithm for the TIME_WAIT search. */
+ uip_connr = 0;
+ for(c = 0; c < UIP_CONNS; ++c) {
+ if(uip_conns[c].tcpstateflags == UIP_CLOSED) {
+ uip_connr = &uip_conns[c];
+ break;
+ }
+ if(uip_conns[c].tcpstateflags == UIP_TIME_WAIT) {
+ if(uip_connr == 0 ||
+ uip_conns[c].timer > uip_connr->timer) {
+ uip_connr = &uip_conns[c];
+ }
+ }
+ }
+
+ if(uip_connr == 0) {
+ /* All connections are used already, we drop packet and hope that
+ the remote end will retransmit the packet at a time when we
+ have more spare connections. */
+ UIP_STAT(++uip_stat.tcp.syndrop);
+ UIP_LOG("tcp: found no unused connections.");
+ goto drop;
+ }
+ uip_conn = uip_connr;
+
+ /* Fill in the necessary fields for the new connection. */
+ uip_connr->rto = uip_connr->timer = UIP_RTO;
+ uip_connr->sa = 0;
+ uip_connr->sv = 4;
+ uip_connr->nrtx = 0;
+ uip_connr->lport = BUF->destport;
+ uip_connr->rport = BUF->srcport;
+ uip_ipaddr_copy(&uip_connr->ripaddr, &BUF->srcipaddr);
+ uip_connr->tcpstateflags = UIP_SYN_RCVD;
+
+ uip_connr->snd_nxt[0] = iss[0];
+ uip_connr->snd_nxt[1] = iss[1];
+ uip_connr->snd_nxt[2] = iss[2];
+ uip_connr->snd_nxt[3] = iss[3];
+ uip_connr->len = 1;
+
+ /* rcv_nxt should be the seqno from the incoming packet + 1. */
+ uip_connr->rcv_nxt[0] = BUF->seqno[0];
+ uip_connr->rcv_nxt[1] = BUF->seqno[1];
+ uip_connr->rcv_nxt[2] = BUF->seqno[2];
+ uip_connr->rcv_nxt[3] = BUF->seqno[3];
+ uip_add_rcv_nxt(1);
+
+ /* Parse the TCP MSS option, if present. */
+ if((BUF->tcpoffset & 0xf0) > 0x50) {
+ for(c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2 ;) {
+ opt = uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + c];
+ if(opt == TCP_OPT_END) {
+ /* End of options. */
+ break;
+ } else if(opt == TCP_OPT_NOOP) {
+ ++c;
+ /* NOP option. */
+ } else if(opt == TCP_OPT_MSS &&
+ uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == TCP_OPT_MSS_LEN) {
+ /* An MSS option with the right option length. */
+ tmp16 = ((uint16_t)uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) |
+ (uint16_t)uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN + 3 + c];
+ uip_connr->initialmss = uip_connr->mss =
+ tmp16 > UIP_TCP_MSS? UIP_TCP_MSS: tmp16;
+
+ /* And we are done processing options. */
+ break;
+ } else {
+ /* All other options have a length field, so that we easily
+ can skip past them. */
+ if(uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0) {
+ /* If the length field is zero, the options are malformed
+ and we don't process them further. */
+ break;
+ }
+ c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c];
+ }
+ }
+ }
+
+ /* Our response will be a SYNACK. */
+#if UIP_ACTIVE_OPEN
+ tcp_send_synack:
+ BUF->flags = TCP_ACK;
+
+ tcp_send_syn:
+ BUF->flags |= TCP_SYN;
+#else /* UIP_ACTIVE_OPEN */
+ tcp_send_synack:
+ BUF->flags = TCP_SYN | TCP_ACK;
+#endif /* UIP_ACTIVE_OPEN */
+
+ /* We send out the TCP Maximum Segment Size option with our
+ SYNACK. */
+ BUF->optdata[0] = TCP_OPT_MSS;
+ BUF->optdata[1] = TCP_OPT_MSS_LEN;
+ BUF->optdata[2] = (UIP_TCP_MSS) / 256;
+ BUF->optdata[3] = (UIP_TCP_MSS) & 255;
+ uip_len = UIP_IPTCPH_LEN + TCP_OPT_MSS_LEN;
+ BUF->tcpoffset = ((UIP_TCPH_LEN + TCP_OPT_MSS_LEN) / 4) << 4;
+ goto tcp_send;
+
+ /* This label will be jumped to if we found an active connection. */
+ found:
+ uip_conn = uip_connr;
+ uip_flags = 0;
+ /* We do a very naive form of TCP reset processing; we just accept
+ any RST and kill our connection. We should in fact check if the
+ sequence number of this reset is within our advertised window
+ before we accept the reset. */
+ if(BUF->flags & TCP_RST) {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ UIP_LOG("tcp: got reset, aborting connection.");
+ uip_flags = UIP_ABORT;
+ UIP_APPCALL();
+ goto drop;
+ }
+ /* Calculate the length of the data, if the application has sent
+ any data to us. */
+ c = (BUF->tcpoffset >> 4) << 2;
+ /* uip_len will contain the length of the actual TCP data. This is
+ calculated by subtracing the length of the TCP header (in
+ c) and the length of the IP header (20 bytes). */
+ uip_len = uip_len - c - UIP_IPH_LEN;
+
+ /* First, check if the sequence number of the incoming packet is
+ what we're expecting next. If not, we send out an ACK with the
+ correct numbers in, unless we are in the SYN_RCVD state and
+ receive a SYN, in which case we should retransmit our SYNACK
+ (which is done futher down). */
+ if(!((((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_SYN_SENT) &&
+ ((BUF->flags & TCP_CTL) == (TCP_SYN | TCP_ACK))) ||
+ (((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_SYN_RCVD) &&
+ ((BUF->flags & TCP_CTL) == TCP_SYN)))) {
+ if((uip_len > 0 || ((BUF->flags & (TCP_SYN | TCP_FIN)) != 0)) &&
+ (BUF->seqno[0] != uip_connr->rcv_nxt[0] ||
+ BUF->seqno[1] != uip_connr->rcv_nxt[1] ||
+ BUF->seqno[2] != uip_connr->rcv_nxt[2] ||
+ BUF->seqno[3] != uip_connr->rcv_nxt[3])) {
+ goto tcp_send_ack;
+ }
+ }
+
+ /* Next, check if the incoming segment acknowledges any outstanding
+ data. If so, we update the sequence number, reset the length of
+ the outstanding data, calculate RTT estimations, and reset the
+ retransmission timer. */
+ if((BUF->flags & TCP_ACK) && uip_outstanding(uip_connr)) {
+ uip_add32(uip_connr->snd_nxt, uip_connr->len);
+
+ if(BUF->ackno[0] == uip_acc32[0] &&
+ BUF->ackno[1] == uip_acc32[1] &&
+ BUF->ackno[2] == uip_acc32[2] &&
+ BUF->ackno[3] == uip_acc32[3]) {
+ /* Update sequence number. */
+ uip_connr->snd_nxt[0] = uip_acc32[0];
+ uip_connr->snd_nxt[1] = uip_acc32[1];
+ uip_connr->snd_nxt[2] = uip_acc32[2];
+ uip_connr->snd_nxt[3] = uip_acc32[3];
+
+ /* Do RTT estimation, unless we have done retransmissions. */
+ if(uip_connr->nrtx == 0) {
+ signed char m;
+ m = uip_connr->rto - uip_connr->timer;
+ /* This is taken directly from VJs original code in his paper */
+ m = m - (uip_connr->sa >> 3);
+ uip_connr->sa += m;
+ if(m < 0) {
+ m = -m;
+ }
+ m = m - (uip_connr->sv >> 2);
+ uip_connr->sv += m;
+ uip_connr->rto = (uip_connr->sa >> 3) + uip_connr->sv;
+
+ }
+ /* Set the acknowledged flag. */
+ uip_flags = UIP_ACKDATA;
+ /* Reset the retransmission timer. */
+ uip_connr->timer = uip_connr->rto;
+
+ /* Reset length of outstanding data. */
+ uip_connr->len = 0;
+ }
+
+ }
+
+ /* Do different things depending on in what state the connection is. */
+ switch(uip_connr->tcpstateflags & UIP_TS_MASK) {
+ /* CLOSED and LISTEN are not handled here. CLOSE_WAIT is not
+ implemented, since we force the application to close when the
+ peer sends a FIN (hence the application goes directly from
+ ESTABLISHED to LAST_ACK). */
+ case UIP_SYN_RCVD:
+ /* In SYN_RCVD we have sent out a SYNACK in response to a SYN, and
+ we are waiting for an ACK that acknowledges the data we sent
+ out the last time. Therefore, we want to have the UIP_ACKDATA
+ flag set. If so, we enter the ESTABLISHED state. */
+ if(uip_flags & UIP_ACKDATA) {
+ uip_connr->tcpstateflags = UIP_ESTABLISHED;
+ uip_flags = UIP_CONNECTED;
+ uip_connr->len = 0;
+ if(uip_len > 0) {
+ uip_flags |= UIP_NEWDATA;
+ uip_add_rcv_nxt(uip_len);
+ }
+ uip_slen = 0;
+ UIP_APPCALL();
+ goto appsend;
+ }
+ /* We need to retransmit the SYNACK */
+ if((BUF->flags & TCP_CTL) == TCP_SYN) {
+ goto tcp_send_synack;
+ }
+ goto drop;
+#if UIP_ACTIVE_OPEN
+ case UIP_SYN_SENT:
+ /* In SYN_SENT, we wait for a SYNACK that is sent in response to
+ our SYN. The rcv_nxt is set to sequence number in the SYNACK
+ plus one, and we send an ACK. We move into the ESTABLISHED
+ state. */
+ if((uip_flags & UIP_ACKDATA) &&
+ (BUF->flags & TCP_CTL) == (TCP_SYN | TCP_ACK)) {
+
+ /* Parse the TCP MSS option, if present. */
+ if((BUF->tcpoffset & 0xf0) > 0x50) {
+ for(c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2 ;) {
+ opt = uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN + c];
+ if(opt == TCP_OPT_END) {
+ /* End of options. */
+ break;
+ } else if(opt == TCP_OPT_NOOP) {
+ ++c;
+ /* NOP option. */
+ } else if(opt == TCP_OPT_MSS &&
+ uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == TCP_OPT_MSS_LEN) {
+ /* An MSS option with the right option length. */
+ tmp16 = (uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) |
+ uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 3 + c];
+ uip_connr->initialmss =
+ uip_connr->mss = tmp16 > UIP_TCP_MSS? UIP_TCP_MSS: tmp16;
+
+ /* And we are done processing options. */
+ break;
+ } else {
+ /* All other options have a length field, so that we easily
+ can skip past them. */
+ if(uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0) {
+ /* If the length field is zero, the options are malformed
+ and we don't process them further. */
+ break;
+ }
+ c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c];
+ }
+ }
+ }
+ uip_connr->tcpstateflags = UIP_ESTABLISHED;
+ uip_connr->rcv_nxt[0] = BUF->seqno[0];
+ uip_connr->rcv_nxt[1] = BUF->seqno[1];
+ uip_connr->rcv_nxt[2] = BUF->seqno[2];
+ uip_connr->rcv_nxt[3] = BUF->seqno[3];
+ uip_add_rcv_nxt(1);
+ uip_flags = UIP_CONNECTED | UIP_NEWDATA;
+ uip_connr->len = 0;
+ uip_clear_buf();
+ uip_slen = 0;
+ UIP_APPCALL();
+ goto appsend;
+ }
+ /* Inform the application that the connection failed */
+ uip_flags = UIP_ABORT;
+ UIP_APPCALL();
+ /* The connection is closed after we send the RST */
+ uip_conn->tcpstateflags = UIP_CLOSED;
+ goto reset;
+#endif /* UIP_ACTIVE_OPEN */
+
+ case UIP_ESTABLISHED:
+ /* In the ESTABLISHED state, we call upon the application to feed
+ data into the uip_buf. If the UIP_ACKDATA flag is set, the
+ application should put new data into the buffer, otherwise we are
+ retransmitting an old segment, and the application should put that
+ data into the buffer.
+
+ If the incoming packet is a FIN, we should close the connection on
+ this side as well, and we send out a FIN and enter the LAST_ACK
+ state. We require that there is no outstanding data; otherwise the
+ sequence numbers will be screwed up. */
+
+ if(BUF->flags & TCP_FIN && !(uip_connr->tcpstateflags & UIP_STOPPED)) {
+ if(uip_outstanding(uip_connr)) {
+ goto drop;
+ }
+ uip_add_rcv_nxt(1 + uip_len);
+ uip_flags |= UIP_CLOSE;
+ if(uip_len > 0) {
+ uip_flags |= UIP_NEWDATA;
+ }
+ UIP_APPCALL();
+ uip_connr->len = 1;
+ uip_connr->tcpstateflags = UIP_LAST_ACK;
+ uip_connr->nrtx = 0;
+ tcp_send_finack:
+ BUF->flags = TCP_FIN | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ /* Check the URG flag. If this is set, the segment carries urgent
+ data that we must pass to the application. */
+ if((BUF->flags & TCP_URG) != 0) {
+#if UIP_URGDATA > 0
+ uip_urglen = (BUF->urgp[0] << 8) | BUF->urgp[1];
+ if(uip_urglen > uip_len) {
+ /* There is more urgent data in the next segment to come. */
+ uip_urglen = uip_len;
+ }
+ uip_add_rcv_nxt(uip_urglen);
+ uip_len -= uip_urglen;
+ uip_urgdata = uip_appdata;
+ uip_appdata += uip_urglen;
+ } else {
+ uip_urglen = 0;
+#else /* UIP_URGDATA > 0 */
+ uip_appdata = ((char *)uip_appdata) + ((BUF->urgp[0] << 8) | BUF->urgp[1]);
+ uip_len -= (BUF->urgp[0] << 8) | BUF->urgp[1];
+#endif /* UIP_URGDATA > 0 */
+ }
+
+ /* If uip_len > 0 we have TCP data in the packet, and we flag this
+ by setting the UIP_NEWDATA flag and update the sequence number
+ we acknowledge. If the application has stopped the dataflow
+ using uip_stop(), we must not accept any data packets from the
+ remote host. */
+ if(uip_len > 0 && !(uip_connr->tcpstateflags & UIP_STOPPED)) {
+ uip_flags |= UIP_NEWDATA;
+ uip_add_rcv_nxt(uip_len);
+ }
+
+ /* Check if the available buffer space advertised by the other end
+ is smaller than the initial MSS for this connection. If so, we
+ set the current MSS to the window size to ensure that the
+ application does not send more data than the other end can
+ handle.
+
+ If the remote host advertises a zero window, we set the MSS to
+ the initial MSS so that the application will send an entire MSS
+ of data. This data will not be acknowledged by the receiver,
+ and the application will retransmit it. This is called the
+ "persistent timer" and uses the retransmission mechanim.
+ */
+ tmp16 = ((uint16_t)BUF->wnd[0] << 8) + (uint16_t)BUF->wnd[1];
+ if(tmp16 > uip_connr->initialmss ||
+ tmp16 == 0) {
+ tmp16 = uip_connr->initialmss;
+ }
+ uip_connr->mss = tmp16;
+
+ /* If this packet constitutes an ACK for outstanding data (flagged
+ by the UIP_ACKDATA flag, we should call the application since it
+ might want to send more data. If the incoming packet had data
+ from the peer (as flagged by the UIP_NEWDATA flag), the
+ application must also be notified.
+
+ When the application is called, the global variable uip_len
+ contains the length of the incoming data. The application can
+ access the incoming data through the global pointer
+ uip_appdata, which usually points UIP_IPTCPH_LEN + UIP_LLH_LEN
+ bytes into the uip_buf array.
+
+ If the application wishes to send any data, this data should be
+ put into the uip_appdata and the length of the data should be
+ put into uip_len. If the application don't have any data to
+ send, uip_len must be set to 0. */
+ if(uip_flags & (UIP_NEWDATA | UIP_ACKDATA)) {
+ uip_slen = 0;
+ UIP_APPCALL();
+
+ appsend:
+
+ if(uip_flags & UIP_ABORT) {
+ uip_slen = 0;
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ BUF->flags = TCP_RST | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ if(uip_flags & UIP_CLOSE) {
+ uip_slen = 0;
+ uip_connr->len = 1;
+ uip_connr->tcpstateflags = UIP_FIN_WAIT_1;
+ uip_connr->nrtx = 0;
+ BUF->flags = TCP_FIN | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ /* If uip_slen > 0, the application has data to be sent. */
+ if(uip_slen > 0) {
+
+ /* If the connection has acknowledged data, the contents of
+ the ->len variable should be discarded. */
+ if((uip_flags & UIP_ACKDATA) != 0) {
+ uip_connr->len = 0;
+ }
+
+ /* If the ->len variable is non-zero the connection has
+ already data in transit and cannot send anymore right
+ now. */
+ if(uip_connr->len == 0) {
+
+ /* The application cannot send more than what is allowed by
+ the mss (the minumum of the MSS and the available
+ window). */
+ if(uip_slen > uip_connr->mss) {
+ uip_slen = uip_connr->mss;
+ }
+
+ /* Remember how much data we send out now so that we know
+ when everything has been acknowledged. */
+ uip_connr->len = uip_slen;
+ } else {
+
+ /* If the application already had unacknowledged data, we
+ make sure that the application does not send (i.e.,
+ retransmit) out more than it previously sent out. */
+ uip_slen = uip_connr->len;
+ }
+ }
+ uip_connr->nrtx = 0;
+ apprexmit:
+ uip_appdata = uip_sappdata;
+
+ /* If the application has data to be sent, or if the incoming
+ packet had new data in it, we must send out a packet. */
+ if(uip_slen > 0 && uip_connr->len > 0) {
+ /* Add the length of the IP and TCP headers. */
+ uip_len = uip_connr->len + UIP_TCPIP_HLEN;
+ /* We always set the ACK flag in response packets. */
+ BUF->flags = TCP_ACK | TCP_PSH;
+ /* Send the packet. */
+ goto tcp_send_noopts;
+ }
+ /* If there is no data to send, just send out a pure ACK if
+ there is newdata. */
+ if(uip_flags & UIP_NEWDATA) {
+ uip_len = UIP_TCPIP_HLEN;
+ BUF->flags = TCP_ACK;
+ goto tcp_send_noopts;
+ }
+ }
+ goto drop;
+ case UIP_LAST_ACK:
+ /* We can close this connection if the peer has acknowledged our
+ FIN. This is indicated by the UIP_ACKDATA flag. */
+ if(uip_flags & UIP_ACKDATA) {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ }
+ break;
+
+ case UIP_FIN_WAIT_1:
+ /* The application has closed the connection, but the remote host
+ hasn't closed its end yet. Thus we do nothing but wait for a
+ FIN from the other side. */
+ if(uip_len > 0) {
+ uip_add_rcv_nxt(uip_len);
+ }
+ if(BUF->flags & TCP_FIN) {
+ if(uip_flags & UIP_ACKDATA) {
+ uip_connr->tcpstateflags = UIP_TIME_WAIT;
+ uip_connr->timer = 0;
+ uip_connr->len = 0;
+ } else {
+ uip_connr->tcpstateflags = UIP_CLOSING;
+ }
+ uip_add_rcv_nxt(1);
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ goto tcp_send_ack;
+ } else if(uip_flags & UIP_ACKDATA) {
+ uip_connr->tcpstateflags = UIP_FIN_WAIT_2;
+ uip_connr->len = 0;
+ goto drop;
+ }
+ if(uip_len > 0) {
+ goto tcp_send_ack;
+ }
+ goto drop;
+
+ case UIP_FIN_WAIT_2:
+ if(uip_len > 0) {
+ uip_add_rcv_nxt(uip_len);
+ }
+ if(BUF->flags & TCP_FIN) {
+ uip_connr->tcpstateflags = UIP_TIME_WAIT;
+ uip_connr->timer = 0;
+ uip_add_rcv_nxt(1);
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ goto tcp_send_ack;
+ }
+ if(uip_len > 0) {
+ goto tcp_send_ack;
+ }
+ goto drop;
+
+ case UIP_TIME_WAIT:
+ goto tcp_send_ack;
+
+ case UIP_CLOSING:
+ if(uip_flags & UIP_ACKDATA) {
+ uip_connr->tcpstateflags = UIP_TIME_WAIT;
+ uip_connr->timer = 0;
+ }
+ }
+ goto drop;
+
+ /* We jump here when we are ready to send the packet, and just want
+ to set the appropriate TCP sequence numbers in the TCP header. */
+ tcp_send_ack:
+ BUF->flags = TCP_ACK;
+
+ tcp_send_nodata:
+ uip_len = UIP_IPTCPH_LEN;
+
+ tcp_send_noopts:
+ BUF->tcpoffset = (UIP_TCPH_LEN / 4) << 4;
+
+ /* We're done with the input processing. We are now ready to send a
+ reply. Our job is to fill in all the fields of the TCP and IP
+ headers before calculating the checksum and finally send the
+ packet. */
+ tcp_send:
+ BUF->ackno[0] = uip_connr->rcv_nxt[0];
+ BUF->ackno[1] = uip_connr->rcv_nxt[1];
+ BUF->ackno[2] = uip_connr->rcv_nxt[2];
+ BUF->ackno[3] = uip_connr->rcv_nxt[3];
+
+ BUF->seqno[0] = uip_connr->snd_nxt[0];
+ BUF->seqno[1] = uip_connr->snd_nxt[1];
+ BUF->seqno[2] = uip_connr->snd_nxt[2];
+ BUF->seqno[3] = uip_connr->snd_nxt[3];
+
+ BUF->srcport = uip_connr->lport;
+ BUF->destport = uip_connr->rport;
+
+ uip_ipaddr_copy(&BUF->srcipaddr, &uip_hostaddr);
+ uip_ipaddr_copy(&BUF->destipaddr, &uip_connr->ripaddr);
+
+ if(uip_connr->tcpstateflags & UIP_STOPPED) {
+ /* If the connection has issued uip_stop(), we advertise a zero
+ window so that the remote host will stop sending data. */
+ BUF->wnd[0] = BUF->wnd[1] = 0;
+ } else {
+ BUF->wnd[0] = ((UIP_RECEIVE_WINDOW) >> 8);
+ BUF->wnd[1] = ((UIP_RECEIVE_WINDOW) & 0xff);
+ }
+
+ tcp_send_noconn:
+ BUF->proto = UIP_PROTO_TCP;
+
+ BUF->ttl = UIP_TTL;
+#if NETSTACK_CONF_WITH_IPV6
+ /* For IPv6, the IP length field does not include the IPv6 IP header
+ length. */
+ BUF->len[0] = ((uip_len - UIP_IPH_LEN) >> 8);
+ BUF->len[1] = ((uip_len - UIP_IPH_LEN) & 0xff);
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ BUF->len[0] = (uip_len >> 8);
+ BUF->len[1] = (uip_len & 0xff);
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ BUF->urgp[0] = BUF->urgp[1] = 0;
+
+ /* Calculate TCP checksum. */
+ BUF->tcpchksum = 0;
+ BUF->tcpchksum = ~(uip_tcpchksum());
+#endif
+
+ ip_send_nolen:
+#if NETSTACK_CONF_WITH_IPV6
+ BUF->vtc = 0x60;
+ BUF->tcflow = 0x00;
+ BUF->flow = 0x00;
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ BUF->vhl = 0x45;
+ BUF->tos = 0;
+ BUF->ipoffset[0] = BUF->ipoffset[1] = 0;
+ ++ipid;
+ BUF->ipid[0] = ipid >> 8;
+ BUF->ipid[1] = ipid & 0xff;
+ /* Calculate IP checksum. */
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~(uip_ipchksum());
+ DEBUG_PRINTF("uip ip_send_nolen: chkecum 0x%04x\n", uip_ipchksum());
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+ UIP_STAT(++uip_stat.tcp.sent);
+#if NETSTACK_CONF_WITH_IPV6
+ send:
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+ DEBUG_PRINTF("Sending packet with length %d (%d)\n", uip_len,
+ (BUF->len[0] << 8) | BUF->len[1]);
+
+ UIP_STAT(++uip_stat.ip.sent);
+ /* Return and let the caller do the actual transmission. */
+ uip_flags = 0;
+ return;
+
+ drop:
+ uip_clear_buf();
+ uip_flags = 0;
+ return;
+}
+/*---------------------------------------------------------------------------*/
+uint16_t
+uip_htons(uint16_t val)
+{
+ return UIP_HTONS(val);
+}
+
+uint32_t
+uip_htonl(uint32_t val)
+{
+ return UIP_HTONL(val);
+}
+/*---------------------------------------------------------------------------*/
+void
+uip_send(const void *data, int len)
+{
+ int copylen;
+ copylen = MIN(len, UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN -
+ (int)((char *)uip_sappdata - (char *)&uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]));
+ if(copylen > 0) {
+ uip_slen = copylen;
+ if(data != uip_sappdata) {
+ memcpy(uip_sappdata, (data), uip_slen);
+ }
+ }
+}
+/*---------------------------------------------------------------------------*/
+/** @}*/
--- /dev/null
+/*
+ * Copyright (c) 2001-2003, Adam Dunkels.
+ * 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 uIP TCP/IP stack.
+ *
+ *
+ */
+
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \file
+ * Header file for the uIP TCP/IP stack.
+ * \author Adam Dunkels <adam@dunkels.com>
+ * \author Julien Abeille <jabeille@cisco.com> (IPv6 related code)
+ * \author Mathilde Durvy <mdurvy@cisco.com> (IPv6 related code)
+ *
+ * The uIP TCP/IP stack header file contains definitions for a number
+ * of C macros that are used by uIP programs as well as internal uIP
+ * structures, TCP/IP header structures and function declarations.
+ *
+ */
+
+#ifndef UIP_H_
+#define UIP_H_
+
+/* Header sizes. */
+#if NETSTACK_CONF_WITH_IPV6
+#define UIP_IPH_LEN 40
+#define UIP_FRAGH_LEN 8
+#else /* NETSTACK_CONF_WITH_IPV6 */
+#define UIP_IPH_LEN 20 /* Size of IP header */
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+#define UIP_UDPH_LEN 8 /* Size of UDP header */
+#define UIP_TCPH_LEN 20 /* Size of TCP header */
+#define UIP_ICMPH_LEN 4 /* Size of ICMP header */
+
+#define UIP_IPUDPH_LEN (UIP_UDPH_LEN + UIP_IPH_LEN) /* Size of IP + UDP header */
+#define UIP_IPTCPH_LEN (UIP_TCPH_LEN + UIP_IPH_LEN) /* Size of IP + TCP header */
+#define UIP_TCPIP_HLEN UIP_IPTCPH_LEN
+#define UIP_IPICMPH_LEN (UIP_IPH_LEN + UIP_ICMPH_LEN) /* Size of ICMP + IP header */
+#define UIP_LLIPH_LEN (UIP_LLH_LEN + UIP_IPH_LEN) /* Size of L2 + IP header */
+#if NETSTACK_CONF_WITH_IPV6
+/**
+ * The sums below are quite used in ND. When used for uip_buf, we
+ * include link layer length when used for uip_len, we do not, hence
+ * we need values with and without LLH_LEN we do not use capital
+ * letters as these values are variable
+ */
+#define uip_l2_l3_hdr_len (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len)
+#define uip_l2_l3_icmp_hdr_len (UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)
+#define uip_l3_hdr_len (UIP_IPH_LEN + uip_ext_len)
+#define uip_l3_icmp_hdr_len (UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN)
+#endif /*NETSTACK_CONF_WITH_IPV6*/
+
+
+#include "uipopt.h"
+
+/* For memcmp */
+#include <string.h>
+
+/**
+ * Representation of an IP address.
+ *
+ */
+typedef union uip_ip4addr_t {
+ uint8_t u8[4]; /* Initializer, must come first. */
+ uint16_t u16[2];
+} uip_ip4addr_t;
+
+typedef union uip_ip6addr_t {
+ uint8_t u8[16]; /* Initializer, must come first. */
+ uint16_t u16[8];
+} uip_ip6addr_t;
+
+#if NETSTACK_CONF_WITH_IPV6
+typedef uip_ip6addr_t uip_ipaddr_t;
+#else /* NETSTACK_CONF_WITH_IPV6 */
+typedef uip_ip4addr_t uip_ipaddr_t;
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+
+/*---------------------------------------------------------------------------*/
+
+/** \brief 16 bit 802.15.4 address */
+typedef struct uip_802154_shortaddr {
+ uint8_t addr[2];
+} uip_802154_shortaddr;
+/** \brief 64 bit 802.15.4 address */
+typedef struct uip_802154_longaddr {
+ uint8_t addr[8];
+} uip_802154_longaddr;
+
+/** \brief 802.11 address */
+typedef struct uip_80211_addr {
+ uint8_t addr[6];
+} uip_80211_addr;
+
+/** \brief 802.3 address */
+typedef struct uip_eth_addr {
+ uint8_t addr[6];
+} uip_eth_addr;
+
+
+#if UIP_CONF_LL_802154
+/** \brief 802.15.4 address */
+typedef uip_802154_longaddr uip_lladdr_t;
+#define UIP_802154_SHORTADDR_LEN 2
+#define UIP_802154_LONGADDR_LEN 8
+/** \brief Link layer address length */
+#define UIP_LLADDR_LEN UIP_802154_LONGADDR_LEN
+#else /*UIP_CONF_LL_802154*/
+#if UIP_CONF_LL_80211
+/** \brief 802.11 address */
+typedef uip_80211_addr uip_lladdr_t;
+/** \brief Link layer address length */
+#define UIP_LLADDR_LEN 6
+#else /*UIP_CONF_LL_80211*/
+/** \brief Ethernet address */
+typedef uip_eth_addr uip_lladdr_t;
+/** \brief Link layer address length */
+#define UIP_LLADDR_LEN 6
+#endif /*UIP_CONF_LL_80211*/
+#endif /*UIP_CONF_LL_802154*/
+
+//#include "tcpip.h"
+
+/*---------------------------------------------------------------------------*/
+/* First, the functions that should be called from the
+ * system. Initialization, the periodic timer, and incoming packets are
+ * handled by the following three functions.
+ */
+/**
+ * \defgroup uipconffunc uIP configuration functions
+ * @{
+ *
+ * The uIP configuration functions are used for setting run-time
+ * parameters in uIP such as IP addresses.
+ */
+
+/**
+ * Set the IP address of this host.
+ *
+ * The IP address is represented as a 4-byte array where the first
+ * octet of the IP address is put in the first member of the 4-byte
+ * array.
+ *
+ * Example:
+ \code
+
+ uip_ipaddr_t addr;
+
+ uip_ipaddr(&addr, 192,168,1,2);
+ uip_sethostaddr(&addr);
+
+ \endcode
+ * \param addr A pointer to an IP address of type uip_ipaddr_t;
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_sethostaddr(addr) uip_ipaddr_copy(&uip_hostaddr, (addr))
+
+/**
+ * Get the IP address of this host.
+ *
+ * The IP address is represented as a 4-byte array where the first
+ * octet of the IP address is put in the first member of the 4-byte
+ * array.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t hostaddr;
+
+ uip_gethostaddr(&hostaddr);
+ \endcode
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the currently configured IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_gethostaddr(addr) uip_ipaddr_copy((addr), &uip_hostaddr)
+
+/**
+ * Set the default router's IP address.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable containing the IP
+ * address of the default router.
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_setdraddr(addr) uip_ipaddr_copy(&uip_draddr, (addr))
+
+/**
+ * Set the netmask.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable containing the IP
+ * address of the netmask.
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_setnetmask(addr) uip_ipaddr_copy(&uip_netmask, (addr))
+
+
+/**
+ * Get the default router's IP address.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the IP address of the default router.
+ *
+ * \hideinitializer
+ */
+#define uip_getdraddr(addr) uip_ipaddr_copy((addr), &uip_draddr)
+
+/**
+ * Get the netmask.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the value of the netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_getnetmask(addr) uip_ipaddr_copy((addr), &uip_netmask)
+
+/** @} */
+
+/**
+ * \defgroup uipinit uIP initialization functions
+ * @{
+ *
+ * The uIP initialization functions are used for booting uIP.
+ */
+
+/**
+ * uIP initialization function.
+ *
+ * This function should be called at boot up to initilize the uIP
+ * TCP/IP stack.
+ */
+void uip_init(void);
+
+/**
+ * uIP initialization function.
+ *
+ * This function may be used at boot time to set the initial ip_id.
+ */
+void uip_setipid(uint16_t id);
+
+/** @} */
+
+/**
+ * \defgroup uipdevfunc uIP device driver functions
+ * @{
+ *
+ * These functions are used by a network device driver for interacting
+ * with uIP.
+ */
+
+/**
+ * Process an incoming packet.
+ *
+ * This function should be called when the device driver has received
+ * a packet from the network. The packet from the device driver must
+ * be present in the uip_buf buffer, and the length of the packet
+ * should be placed in the uip_len variable.
+ *
+ * When the function returns, there may be an outbound packet placed
+ * in the uip_buf packet buffer. If so, the uip_len variable is set to
+ * the length of the packet. If no packet is to be sent out, the
+ * uip_len variable is set to 0.
+ *
+ * The usual way of calling the function is presented by the source
+ * code below.
+ \code
+ uip_len = devicedriver_poll();
+ if(uip_len > 0) {
+ uip_input();
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note If you are writing a uIP device driver that needs ARP
+ * (Address Resolution Protocol), e.g., when running uIP over
+ * Ethernet, you will need to call the uIP ARP code before calling
+ * this function:
+ \code
+ #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+ uip_len = ethernet_devicedrver_poll();
+ if(uip_len > 0) {
+ if(BUF->type == UIP_HTONS(UIP_ETHTYPE_IP)) {
+ uip_arp_ipin();
+ uip_input();
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ } else if(BUF->type == UIP_HTONS(UIP_ETHTYPE_ARP)) {
+ uip_arp_arpin();
+ if(uip_len > 0) {
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \hideinitializer
+ */
+#define uip_input() uip_process(UIP_DATA)
+
+
+/**
+ * Periodic processing for a connection identified by its number.
+ *
+ * This function does the necessary periodic processing (timers,
+ * polling) for a uIP TCP connection, and should be called when the
+ * periodic uIP timer goes off. It should be called for every
+ * connection, regardless of whether they are open of closed.
+ *
+ * When the function returns, it may have an outbound packet waiting
+ * for service in the uIP packet buffer, and if so the uip_len
+ * variable is set to a value larger than zero. The device driver
+ * should be called to send out the packet.
+ *
+ * The usual way of calling the function is through a for() loop like
+ * this:
+ \code
+ for(i = 0; i < UIP_CONNS; ++i) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note If you are writing a uIP device driver that needs ARP
+ * (Address Resolution Protocol), e.g., when running uIP over
+ * Ethernet, you will need to call the uip_arp_out() function before
+ * calling the device driver:
+ \code
+ for(i = 0; i < UIP_CONNS; ++i) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \param conn The number of the connection which is to be periodically polled.
+ *
+ * \hideinitializer
+ */
+#if UIP_TCP
+#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \
+ uip_process(UIP_TIMER); } while (0)
+
+/**
+ * Macro to determine whether a specific uIP connection is active
+ *
+ * \param conn The connection's number
+ * \retval 0 Connection closed
+ */
+#define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED)
+
+/**
+ * Perform periodic processing for a connection identified by a pointer
+ * to its structure.
+ *
+ * Same as uip_periodic() but takes a pointer to the actual uip_conn
+ * struct instead of an integer as its argument. This function can be
+ * used to force periodic processing of a specific connection.
+ *
+ * \param conn A pointer to the uip_conn struct for the connection to
+ * be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_periodic_conn(conn) do { uip_conn = conn; \
+ uip_process(UIP_TIMER); } while (0)
+
+/**
+ * Request that a particular connection should be polled.
+ *
+ * Similar to uip_periodic_conn() but does not perform any timer
+ * processing. The application is polled for new data.
+ *
+ * \param conn A pointer to the uip_conn struct for the connection to
+ * be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_poll_conn(conn) do { uip_conn = conn; \
+ uip_process(UIP_POLL_REQUEST); } while (0)
+
+#endif /* UIP_TCP */
+
+#if UIP_UDP
+/**
+ * Periodic processing for a UDP connection identified by its number.
+ *
+ * This function is essentially the same as uip_periodic(), but for
+ * UDP connections. It is called in a similar fashion as the
+ * uip_periodic() function:
+ \code
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note As for the uip_periodic() function, special care has to be
+ * taken when using uIP together with ARP and Ethernet:
+ \code
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \param conn The number of the UDP connection to be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \
+ uip_process(UIP_UDP_TIMER); } while(0)
+
+/**
+ * Periodic processing for a UDP connection identified by a pointer to
+ * its structure.
+ *
+ * Same as uip_udp_periodic() but takes a pointer to the actual
+ * uip_conn struct instead of an integer as its argument. This
+ * function can be used to force periodic processing of a specific
+ * connection.
+ *
+ * \param conn A pointer to the uip_udp_conn struct for the connection
+ * to be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \
+ uip_process(UIP_UDP_TIMER); } while(0)
+#endif /* UIP_UDP */
+
+/** \brief Abandon the reassembly of the current packet */
+void uip_reass_over(void);
+
+/**
+ * The uIP packet buffer.
+ *
+ * The uip_aligned_buf array is used to hold incoming and outgoing
+ * packets. The device driver should place incoming data into this
+ * buffer. When sending data, the device driver should read the link
+ * level headers and the TCP/IP headers from this buffer. The size of
+ * the link level headers is configured by the UIP_LLH_LEN define.
+ *
+ * \note The application data need not be placed in this buffer, so
+ * the device driver must read it from the place pointed to by the
+ * uip_appdata pointer as illustrated by the following example:
+ \code
+ void
+ devicedriver_send(void)
+ {
+ hwsend(&uip_buf[0], UIP_LLH_LEN);
+ if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {
+ hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN);
+ } else {
+ hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN);
+ hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN);
+ }
+ }
+ \endcode
+*/
+
+typedef union {
+ uint32_t u32[(UIP_BUFSIZE + 3) / 4];
+ uint8_t u8[UIP_BUFSIZE];
+} uip_buf_t;
+
+CCIF extern uip_buf_t uip_aligned_buf;
+
+/** Macro to access uip_aligned_buf as an array of bytes */
+#define uip_buf (uip_aligned_buf.u8)
+
+
+/** @} */
+
+/*---------------------------------------------------------------------------*/
+/* Functions that are used by the uIP application program. Opening and
+ * closing connections, sending and receiving data, etc. is all
+ * handled by the functions below.
+ */
+/**
+ * \defgroup uipappfunc uIP application functions
+ * @{
+ *
+ * Functions used by an application running on top of uIP.
+ */
+
+/**
+ * Start listening to the specified port.
+ *
+ * \note Since this function expects the port number in network byte
+ * order, a conversion using UIP_HTONS() or uip_htons() is necessary.
+ *
+ \code
+ uip_listen(UIP_HTONS(80));
+ \endcode
+ *
+ * \param port A 16-bit port number in network byte order.
+ */
+void uip_listen(uint16_t port);
+
+/**
+ * Stop listening to the specified port.
+ *
+ * \note Since this function expects the port number in network byte
+ * order, a conversion using UIP_HTONS() or uip_htons() is necessary.
+ *
+ \code
+ uip_unlisten(UIP_HTONS(80));
+ \endcode
+ *
+ * \param port A 16-bit port number in network byte order.
+ */
+void uip_unlisten(uint16_t port);
+
+/**
+ * Connect to a remote host using TCP.
+ *
+ * This function is used to start a new connection to the specified
+ * port on the specified host. It allocates a new connection identifier,
+ * sets the connection to the SYN_SENT state and sets the
+ * retransmission timer to 0. This will cause a TCP SYN segment to be
+ * sent out the next time this connection is periodically processed,
+ * which usually is done within 0.5 seconds after the call to
+ * uip_connect().
+ *
+ * \note This function is available only if support for active open
+ * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h.
+ *
+ * \note Since this function requires the port number to be in network
+ * byte order, a conversion using UIP_HTONS() or uip_htons() is necessary.
+ *
+ \code
+ uip_ipaddr_t ipaddr;
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ uip_connect(&ipaddr, UIP_HTONS(80));
+ \endcode
+ *
+ * \param ripaddr The IP address of the remote host.
+ *
+ * \param port A 16-bit port number in network byte order.
+ *
+ * \return A pointer to the uIP connection identifier for the new connection,
+ * or NULL if no connection could be allocated.
+ *
+ */
+struct uip_conn *uip_connect(const uip_ipaddr_t *ripaddr, uint16_t port);
+
+
+
+/**
+ * \internal
+ *
+ * Check if a connection has outstanding (i.e., unacknowledged) data.
+ *
+ * \param conn A pointer to the uip_conn structure for the connection.
+ *
+ * \hideinitializer
+ */
+#define uip_outstanding(conn) ((conn)->len)
+
+/**
+ * Send data on the current connection.
+ *
+ * This function is used to send out a single segment of TCP
+ * data. Only applications that have been invoked by uIP for event
+ * processing can send data.
+ *
+ * The amount of data that actually is sent out after a call to this
+ * function is determined by the maximum amount of data TCP allows. uIP
+ * will automatically crop the data so that only the appropriate
+ * amount of data is sent. The function uip_mss() can be used to query
+ * uIP for the amount of data that actually will be sent.
+ *
+ * \note This function does not guarantee that the sent data will
+ * arrive at the destination. If the data is lost in the network, the
+ * application will be invoked with the uip_rexmit() event being
+ * set. The application will then have to resend the data using this
+ * function.
+ *
+ * \param data A pointer to the data which is to be sent.
+ *
+ * \param len The maximum amount of data bytes to be sent.
+ *
+ * \hideinitializer
+ */
+CCIF void uip_send(const void *data, int len);
+
+/**
+ * The length of any incoming data that is currently available (if available)
+ * in the uip_appdata buffer.
+ *
+ * The test function uip_data() must first be used to check if there
+ * is any data available at all.
+ *
+ * \hideinitializer
+ */
+/*void uip_datalen(void);*/
+#define uip_datalen() uip_len
+
+/**
+ * The length of any out-of-band data (urgent data) that has arrived
+ * on the connection.
+ *
+ * \note The configuration parameter UIP_URGDATA must be set for this
+ * function to be enabled.
+ *
+ * \hideinitializer
+ */
+#define uip_urgdatalen() uip_urglen
+
+/**
+ * Close the current connection.
+ *
+ * This function will close the current connection in a nice way.
+ *
+ * \hideinitializer
+ */
+#define uip_close() (uip_flags = UIP_CLOSE)
+
+/**
+ * Abort the current connection.
+ *
+ * This function will abort (reset) the current connection, and is
+ * usually used when an error has occurred that prevents using the
+ * uip_close() function.
+ *
+ * \hideinitializer
+ */
+#define uip_abort() (uip_flags = UIP_ABORT)
+
+/**
+ * Tell the sending host to stop sending data.
+ *
+ * This function will close our receiver's window so that we stop
+ * receiving data for the current connection.
+ *
+ * \hideinitializer
+ */
+#define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED)
+
+/**
+ * Find out if the current connection has been previously stopped with
+ * uip_stop().
+ *
+ * \hideinitializer
+ */
+#define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED)
+
+/**
+ * Restart the current connection, if is has previously been stopped
+ * with uip_stop().
+ *
+ * This function will open the receiver's window again so that we
+ * start receiving data for the current connection.
+ *
+ * \hideinitializer
+ */
+#define uip_restart() do { uip_flags |= UIP_NEWDATA; \
+ uip_conn->tcpstateflags &= ~UIP_STOPPED; \
+ } while(0)
+
+
+/* uIP tests that can be made to determine in what state the current
+ connection is, and what the application function should do. */
+
+/**
+ * Is the current connection a UDP connection?
+ *
+ * This function checks whether the current connection is a UDP connection.
+ *
+ * \hideinitializer
+ *
+ */
+#define uip_udpconnection() (uip_conn == NULL)
+
+/**
+ * Is new incoming data available?
+ *
+ * Will reduce to non-zero if there is new data for the application
+ * present at the uip_appdata pointer. The size of the data is
+ * available through the uip_len variable.
+ *
+ * \hideinitializer
+ */
+#define uip_newdata() (uip_flags & UIP_NEWDATA)
+
+/**
+ * Has previously sent data been acknowledged?
+ *
+ * Will reduce to non-zero if the previously sent data has been
+ * acknowledged by the remote host. This means that the application
+ * can send new data.
+ *
+ * \hideinitializer
+ */
+#define uip_acked() (uip_flags & UIP_ACKDATA)
+
+/**
+ * Has the connection just been connected?
+ *
+ * Reduces to non-zero if the current connection has been connected to
+ * a remote host. This will happen both if the connection has been
+ * actively opened (with uip_connect()) or passively opened (with
+ * uip_listen()).
+ *
+ * \hideinitializer
+ */
+#define uip_connected() (uip_flags & UIP_CONNECTED)
+
+/**
+ * Has the connection been closed by the other end?
+ *
+ * Is non-zero if the connection has been closed by the remote
+ * host. The application may then do the necessary clean-ups.
+ *
+ * \hideinitializer
+ */
+#define uip_closed() (uip_flags & UIP_CLOSE)
+
+/**
+ * Has the connection been aborted by the other end?
+ *
+ * Non-zero if the current connection has been aborted (reset) by the
+ * remote host.
+ *
+ * \hideinitializer
+ */
+#define uip_aborted() (uip_flags & UIP_ABORT)
+
+/**
+ * Has the connection timed out?
+ *
+ * Non-zero if the current connection has been aborted due to too many
+ * retransmissions.
+ *
+ * \hideinitializer
+ */
+#define uip_timedout() (uip_flags & UIP_TIMEDOUT)
+
+/**
+ * Do we need to retransmit previously data?
+ *
+ * Reduces to non-zero if the previously sent data has been lost in
+ * the network, and the application should retransmit it. The
+ * application should send the exact same data as it did the last
+ * time, using the uip_send() function.
+ *
+ * \hideinitializer
+ */
+#define uip_rexmit() (uip_flags & UIP_REXMIT)
+
+/**
+ * Is the connection being polled by uIP?
+ *
+ * Is non-zero if the reason the application is invoked is that the
+ * current connection has been idle for a while and should be
+ * polled.
+ *
+ * The polling event can be used for sending data without having to
+ * wait for the remote host to send data.
+ *
+ * \hideinitializer
+ */
+#define uip_poll() (uip_flags & UIP_POLL)
+
+/**
+ * Get the initial maximum segment size (MSS) of the current
+ * connection.
+ *
+ * \hideinitializer
+ */
+#define uip_initialmss() (uip_conn->initialmss)
+
+/**
+ * Get the current maximum segment size that can be sent on the current
+ * connection.
+ *
+ * The current maximum segment size that can be sent on the
+ * connection is computed from the receiver's window and the MSS of
+ * the connection (which also is available by calling
+ * uip_initialmss()).
+ *
+ * \hideinitializer
+ */
+#define uip_mss() (uip_conn->mss)
+
+/**
+ * Set up a new UDP connection.
+ *
+ * This function sets up a new UDP connection. The function will
+ * automatically allocate an unused local port for the new
+ * connection. However, another port can be chosen by using the
+ * uip_udp_bind() call, after the uip_udp_new() function has been
+ * called.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t addr;
+ struct uip_udp_conn *c;
+
+ uip_ipaddr(&addr, 192,168,2,1);
+ c = uip_udp_new(&addr, UIP_HTONS(12345));
+ if(c != NULL) {
+ uip_udp_bind(c, UIP_HTONS(12344));
+ }
+ \endcode
+ * \param ripaddr The IP address of the remote host.
+ *
+ * \param rport The remote port number in network byte order.
+ *
+ * \return The uip_udp_conn structure for the new connection, or NULL
+ * if no connection could be allocated.
+ */
+struct uip_udp_conn *uip_udp_new(const uip_ipaddr_t *ripaddr, uint16_t rport);
+
+/**
+ * Remove a UDP connection.
+ *
+ * \param conn A pointer to the uip_udp_conn structure for the connection.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_remove(conn) (conn)->lport = 0
+
+/**
+ * Bind a UDP connection to a local port.
+ *
+ * \param conn A pointer to the uip_udp_conn structure for the
+ * connection.
+ *
+ * \param port The local port number, in network byte order.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_bind(conn, port) (conn)->lport = port
+
+/**
+ * Send a UDP datagram of length len on the current connection.
+ *
+ * This function can only be called in response to a UDP event (poll
+ * or newdata). The data must be present in the uip_buf buffer, at the
+ * place pointed to by the uip_appdata pointer.
+ *
+ * \param len The length of the data in the uip_buf buffer.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_send(len) uip_send((char *)uip_appdata, len)
+
+/** @} */
+
+/* uIP convenience and converting functions. */
+
+/**
+ * \defgroup uipconvfunc uIP conversion functions
+ * @{
+ *
+ * These functions can be used for converting between different data
+ * formats used by uIP.
+ */
+
+/**
+ * Convert an IP address to four bytes separated by commas.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ printf("ipaddr=%d.%d.%d.%d\n", uip_ipaddr_to_quad(&ipaddr));
+ \endcode
+ *
+ * \param a A pointer to a uip_ipaddr_t.
+ * \hideinitializer
+ */
+#define uip_ipaddr_to_quad(a) (a)->u8[0],(a)->u8[1],(a)->u8[2],(a)->u8[3]
+
+/**
+ * Construct an IP address from four bytes.
+ *
+ * This function constructs an IP address of the type that uIP handles
+ * internally from four bytes. The function is handy for specifying IP
+ * addresses to use with e.g. the uip_connect() function.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ struct uip_conn *c;
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ c = uip_connect(&ipaddr, UIP_HTONS(80));
+ \endcode
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the IP address.
+ *
+ * \param addr0 The first octet of the IP address.
+ * \param addr1 The second octet of the IP address.
+ * \param addr2 The third octet of the IP address.
+ * \param addr3 The forth octet of the IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \
+ (addr)->u8[0] = addr0; \
+ (addr)->u8[1] = addr1; \
+ (addr)->u8[2] = addr2; \
+ (addr)->u8[3] = addr3; \
+ } while(0)
+
+/**
+ * Construct an IPv6 address from eight 16-bit words.
+ *
+ * This function constructs an IPv6 address.
+ *
+ * \hideinitializer
+ */
+#define uip_ip6addr(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7) do { \
+ (addr)->u16[0] = UIP_HTONS(addr0); \
+ (addr)->u16[1] = UIP_HTONS(addr1); \
+ (addr)->u16[2] = UIP_HTONS(addr2); \
+ (addr)->u16[3] = UIP_HTONS(addr3); \
+ (addr)->u16[4] = UIP_HTONS(addr4); \
+ (addr)->u16[5] = UIP_HTONS(addr5); \
+ (addr)->u16[6] = UIP_HTONS(addr6); \
+ (addr)->u16[7] = UIP_HTONS(addr7); \
+ } while(0)
+
+/**
+ * Construct an IPv6 address from sixteen 8-bit words.
+ *
+ * This function constructs an IPv6 address.
+ *
+ * \hideinitializer
+ */
+#define uip_ip6addr_u8(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7,addr8,addr9,addr10,addr11,addr12,addr13,addr14,addr15) do { \
+ (addr)->u8[0] = addr0; \
+ (addr)->u8[1] = addr1; \
+ (addr)->u8[2] = addr2; \
+ (addr)->u8[3] = addr3; \
+ (addr)->u8[4] = addr4; \
+ (addr)->u8[5] = addr5; \
+ (addr)->u8[6] = addr6; \
+ (addr)->u8[7] = addr7; \
+ (addr)->u8[8] = addr8; \
+ (addr)->u8[9] = addr9; \
+ (addr)->u8[10] = addr10; \
+ (addr)->u8[11] = addr11; \
+ (addr)->u8[12] = addr12; \
+ (addr)->u8[13] = addr13; \
+ (addr)->u8[14] = addr14; \
+ (addr)->u8[15] = addr15; \
+ } while(0)
+
+
+/**
+ * Copy an IP address from one place to another.
+ *
+ * Copies an IP address from one place to another.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr_copy(&ipaddr2, &ipaddr1);
+ \endcode
+ *
+ * \param dest The destination for the copy.
+ * \param src The source from where to copy.
+ *
+ * \hideinitializer
+ */
+#ifndef uip_ipaddr_copy
+#define uip_ipaddr_copy(dest, src) (*(dest) = *(src))
+#endif
+#ifndef uip_ip4addr_copy
+#define uip_ip4addr_copy(dest, src) (*((uip_ip4addr_t *)dest) = *((uip_ip4addr_t *)src))
+#endif
+#ifndef uip_ip6addr_copy
+#define uip_ip6addr_copy(dest, src) (*((uip_ip6addr_t *)dest) = *((uip_ip6addr_t *)src))
+#endif
+
+/**
+ * Compare two IP addresses
+ *
+ * Compares two IP addresses.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) {
+ printf("They are the same");
+ }
+ \endcode
+ *
+ * \param addr1 The first IP address.
+ * \param addr2 The second IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_ip4addr_cmp(addr1, addr2) ((addr1)->u16[0] == (addr2)->u16[0] && \
+ (addr1)->u16[1] == (addr2)->u16[1])
+#define uip_ip6addr_cmp(addr1, addr2) (memcmp(addr1, addr2, sizeof(uip_ip6addr_t)) == 0)
+
+#if NETSTACK_CONF_WITH_IPV6
+#define uip_ipaddr_cmp(addr1, addr2) uip_ip6addr_cmp(addr1, addr2)
+#else /* NETSTACK_CONF_WITH_IPV6 */
+#define uip_ipaddr_cmp(addr1, addr2) uip_ip4addr_cmp(addr1, addr2)
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+/**
+ * Compare two IP addresses with netmasks
+ *
+ * Compares two IP addresses with netmasks. The masks are used to mask
+ * out the bits that are to be compared.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2, mask;
+
+ uip_ipaddr(&mask, 255,255,255,0);
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr(&ipaddr2, 192,16,1,3);
+ if(uip_ipaddr_maskcmp(&ipaddr1, &ipaddr2, &mask)) {
+ printf("They are the same");
+ }
+ \endcode
+ *
+ * \param addr1 The first IP address.
+ * \param addr2 The second IP address.
+ * \param mask The netmask.
+ *
+ * \hideinitializer
+ */
+
+#define uip_ipaddr_maskcmp(addr1, addr2, mask) \
+ (((((uint16_t *)addr1)[0] & ((uint16_t *)mask)[0]) == \
+ (((uint16_t *)addr2)[0] & ((uint16_t *)mask)[0])) && \
+ ((((uint16_t *)addr1)[1] & ((uint16_t *)mask)[1]) == \
+ (((uint16_t *)addr2)[1] & ((uint16_t *)mask)[1])))
+
+#define uip_ipaddr_prefixcmp(addr1, addr2, length) (memcmp(addr1, addr2, length>>3) == 0)
+
+
+
+/*
+ * Check if an address is a broadcast address for a network.
+ *
+ * Checks if an address is the broadcast address for a network. The
+ * network is defined by an IP address that is on the network and the
+ * network's netmask.
+ *
+ * \param addr The IP address.
+ * \param netaddr The network's IP address.
+ * \param netmask The network's netmask.
+ *
+ * \hideinitializer
+ */
+/*#define uip_ipaddr_isbroadcast(addr, netaddr, netmask)
+ ((uip_ipaddr_t *)(addr)).u16 & ((uip_ipaddr_t *)(addr)).u16*/
+
+
+
+/**
+ * Mask out the network part of an IP address.
+ *
+ * Masks out the network part of an IP address, given the address and
+ * the netmask.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2, netmask;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr(&netmask, 255,255,255,0);
+ uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask);
+ \endcode
+ *
+ * In the example above, the variable "ipaddr2" will contain the IP
+ * address 192.168.1.0.
+ *
+ * \param dest Where the result is to be placed.
+ * \param src The IP address.
+ * \param mask The netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr_mask(dest, src, mask) do { \
+ ((uint16_t *)dest)[0] = ((uint16_t *)src)[0] & ((uint16_t *)mask)[0]; \
+ ((uint16_t *)dest)[1] = ((uint16_t *)src)[1] & ((uint16_t *)mask)[1]; \
+ } while(0)
+
+/**
+ * Pick the first octet of an IP address.
+ *
+ * Picks out the first octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ uint8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr1(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 1.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr1(addr) ((addr)->u8[0])
+
+/**
+ * Pick the second octet of an IP address.
+ *
+ * Picks out the second octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ uint8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr2(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 2.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr2(addr) ((addr)->u8[1])
+
+/**
+ * Pick the third octet of an IP address.
+ *
+ * Picks out the third octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ uint8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr3(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 3.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr3(addr) ((addr)->u8[2])
+
+/**
+ * Pick the fourth octet of an IP address.
+ *
+ * Picks out the fourth octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ uint8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr4(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 4.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr4(addr) ((addr)->u8[3])
+
+/**
+ * Convert 16-bit quantity from host byte order to network byte order.
+ *
+ * This macro is primarily used for converting constants from host
+ * byte order to network byte order. For converting variables to
+ * network byte order, use the uip_htons() function instead.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_HTONS
+# if UIP_BYTE_ORDER == UIP_BIG_ENDIAN
+# define UIP_HTONS(n) (n)
+# define UIP_HTONL(n) (n)
+# else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
+# define UIP_HTONS(n) (uint16_t)((((uint16_t) (n)) << 8) | (((uint16_t) (n)) >> 8))
+# define UIP_HTONL(n) (((uint32_t)UIP_HTONS(n) << 16) | UIP_HTONS((uint32_t)(n) >> 16))
+# endif /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
+#else
+#error "UIP_HTONS already defined!"
+#endif /* UIP_HTONS */
+
+/**
+ * Convert a 16-bit quantity from host byte order to network byte order.
+ *
+ * This function is primarily used for converting variables from host
+ * byte order to network byte order. For converting constants to
+ * network byte order, use the UIP_HTONS() macro instead.
+ */
+#ifndef uip_htons
+CCIF uint16_t uip_htons(uint16_t val);
+#endif /* uip_htons */
+#ifndef uip_ntohs
+#define uip_ntohs uip_htons
+#endif
+
+#ifndef uip_htonl
+CCIF uint32_t uip_htonl(uint32_t val);
+#endif /* uip_htonl */
+#ifndef uip_ntohl
+#define uip_ntohl uip_htonl
+#endif
+
+/** @} */
+
+/**
+ * Pointer to the application data in the packet buffer.
+ *
+ * This pointer points to the application data when the application is
+ * called. If the application wishes to send data, the application may
+ * use this space to write the data into before calling uip_send().
+ */
+CCIF extern void *uip_appdata;
+
+#if UIP_URGDATA > 0
+/* uint8_t *uip_urgdata:
+ *
+ * This pointer points to any urgent data that has been received. Only
+ * present if compiled with support for urgent data (UIP_URGDATA).
+ */
+extern void *uip_urgdata;
+#endif /* UIP_URGDATA > 0 */
+
+
+/**
+ * \defgroup uipdrivervars Variables used in uIP device drivers
+ * @{
+ *
+ * uIP has a few global variables that are used in device drivers for
+ * uIP.
+ */
+
+/**
+ * The length of the packet in the uip_buf buffer.
+ *
+ * The global variable uip_len holds the length of the packet in the
+ * uip_buf buffer.
+ *
+ * When the network device driver calls the uIP input function,
+ * uip_len should be set to the length of the packet in the uip_buf
+ * buffer.
+ *
+ * When sending packets, the device driver should use the contents of
+ * the uip_len variable to determine the length of the outgoing
+ * packet.
+ *
+ */
+CCIF extern uint16_t uip_len;
+
+/**
+ * The length of the extension headers
+ */
+extern uint8_t uip_ext_len;
+/** @} */
+
+#if UIP_URGDATA > 0
+extern uint16_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+/*
+ * Clear uIP buffer
+ *
+ * This function clears the uIP buffer by reseting the uip_len and
+ * uip_ext_len pointers.
+ */
+#if NETSTACK_CONF_WITH_IPV6
+#define uip_clear_buf() { \
+ uip_len = 0; \
+ uip_ext_len = 0; \
+}
+#else /*NETSTACK_CONF_WITH_IPV6*/
+#define uip_clear_buf() { \
+ uip_len = 0; \
+}
+#endif /*NETSTACK_CONF_WITH_IPV6*/
+
+/**
+ * Representation of a uIP TCP connection.
+ *
+ * The uip_conn structure is used for identifying a connection. All
+ * but one field in the structure are to be considered read-only by an
+ * application. The only exception is the appstate field whose purpose
+ * is to let the application store application-specific state (e.g.,
+ * file pointers) for the connection. The type of this field is
+ * configured in the "uipopt.h" header file.
+ */
+struct uip_conn {
+ uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */
+
+ uint16_t lport; /**< The local TCP port, in network byte order. */
+ uint16_t rport; /**< The local remote TCP port, in network byte
+ order. */
+
+ uint8_t rcv_nxt[4]; /**< The sequence number that we expect to
+ receive next. */
+ uint8_t snd_nxt[4]; /**< The sequence number that was last sent by us. */
+ uint16_t len; /**< Length of the data that was previously sent. */
+ uint16_t mss; /**< Current maximum segment size for the connection. */
+ uint16_t initialmss; /**< Initial maximum segment size for the connection. */
+ uint8_t sa; /**< Retransmission time-out calculation state variable. */
+ uint8_t sv; /**< Retransmission time-out calculation state variable. */
+ uint8_t rto; /**< Retransmission time-out. */
+ uint8_t tcpstateflags; /**< TCP state and flags. */
+ uint8_t timer; /**< The retransmission timer. */
+ uint8_t nrtx; /**< The number of retransmissions for the last
+ segment sent. */
+
+ uip_tcp_appstate_t appstate; /** The application state. */
+};
+
+
+/**
+ * Pointer to the current TCP connection.
+ *
+ * The uip_conn pointer can be used to access the current TCP
+ * connection.
+ */
+
+CCIF extern struct uip_conn *uip_conn;
+#if UIP_TCP
+/* The array containing all uIP connections. */
+CCIF extern struct uip_conn uip_conns[UIP_CONNS];
+#endif
+
+/**
+ * \addtogroup uiparch
+ * @{
+ */
+
+/**
+ * 4-byte array used for the 32-bit sequence number calculations.
+ */
+extern uint8_t uip_acc32[4];
+/** @} */
+
+/**
+ * Representation of a uIP UDP connection.
+ */
+struct uip_udp_conn {
+ uip_ipaddr_t ripaddr; /**< The IP address of the remote peer. */
+ uint16_t lport; /**< The local port number in network byte order. */
+ uint16_t rport; /**< The remote port number in network byte order. */
+ uint8_t ttl; /**< Default time-to-live. */
+
+ /** The application state. */
+ uip_udp_appstate_t appstate;
+};
+
+/**
+ * The current UDP connection.
+ */
+extern struct uip_udp_conn *uip_udp_conn;
+extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+
+struct uip_fallback_interface {
+ void (*init)(void);
+ /**
+ * \retval >=0
+ * in case of success
+ * \retval <0
+ * in case of failure
+ */
+ int (*output)(void);
+};
+
+#if UIP_CONF_ICMP6
+struct uip_icmp6_conn {
+ uip_icmp6_appstate_t appstate;
+};
+extern struct uip_icmp6_conn uip_icmp6_conns;
+#endif /*UIP_CONF_ICMP6*/
+
+/**
+ * The uIP TCP/IP statistics.
+ *
+ * This is the variable in which the uIP TCP/IP statistics are gathered.
+ */
+#if UIP_STATISTICS == 1
+extern struct uip_stats uip_stat;
+#define UIP_STAT(s) s
+#else
+#define UIP_STAT(s)
+#endif /* UIP_STATISTICS == 1 */
+
+/**
+ * The structure holding the TCP/IP statistics that are gathered if
+ * UIP_STATISTICS is set to 1.
+ *
+ */
+struct uip_stats {
+ struct {
+ uip_stats_t recv; /**< Number of received packets at the IP layer. */
+ uip_stats_t sent; /**< Number of sent packets at the IP layer. */
+ uip_stats_t forwarded;/**< Number of forwarded packets at the IP layer. */
+ uip_stats_t drop; /**< Number of dropped packets at the IP layer. */
+ uip_stats_t vhlerr; /**< Number of packets dropped due to wrong
+ IP version or header length. */
+ uip_stats_t hblenerr; /**< Number of packets dropped due to wrong
+ IP length, high byte. */
+ uip_stats_t lblenerr; /**< Number of packets dropped due to wrong
+ IP length, low byte. */
+ uip_stats_t fragerr; /**< Number of packets dropped because they
+ were IP fragments. */
+ uip_stats_t chkerr; /**< Number of packets dropped due to IP
+ checksum errors. */
+ uip_stats_t protoerr; /**< Number of packets dropped because they
+ were neither ICMP, UDP nor TCP. */
+ } ip; /**< IP statistics. */
+ struct {
+ uip_stats_t recv; /**< Number of received ICMP packets. */
+ uip_stats_t sent; /**< Number of sent ICMP packets. */
+ uip_stats_t drop; /**< Number of dropped ICMP packets. */
+ uip_stats_t typeerr; /**< Number of ICMP packets with a wrong type. */
+ uip_stats_t chkerr; /**< Number of ICMP packets with a bad checksum. */
+ } icmp; /**< ICMP statistics. */
+#if UIP_TCP
+ struct {
+ uip_stats_t recv; /**< Number of recived TCP segments. */
+ uip_stats_t sent; /**< Number of sent TCP segments. */
+ uip_stats_t drop; /**< Number of dropped TCP segments. */
+ uip_stats_t chkerr; /**< Number of TCP segments with a bad checksum. */
+ uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK number. */
+ uip_stats_t rst; /**< Number of received TCP RST (reset) segments. */
+ uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */
+ uip_stats_t syndrop; /**< Number of dropped SYNs because too few
+ connections were available. */
+ uip_stats_t synrst; /**< Number of SYNs for closed ports,
+ triggering a RST. */
+ } tcp; /**< TCP statistics. */
+#endif
+#if UIP_UDP
+ struct {
+ uip_stats_t drop; /**< Number of dropped UDP segments. */
+ uip_stats_t recv; /**< Number of recived UDP segments. */
+ uip_stats_t sent; /**< Number of sent UDP segments. */
+ uip_stats_t chkerr; /**< Number of UDP segments with a bad
+ checksum. */
+ } udp; /**< UDP statistics. */
+#endif /* UIP_UDP */
+#if NETSTACK_CONF_WITH_IPV6
+ struct {
+ uip_stats_t drop; /**< Number of dropped ND6 packets. */
+ uip_stats_t recv; /**< Number of recived ND6 packets */
+ uip_stats_t sent; /**< Number of sent ND6 packets */
+ } nd6;
+#endif /*NETSTACK_CONF_WITH_IPV6*/
+};
+
+
+/*---------------------------------------------------------------------------*/
+/* All the stuff below this point is internal to uIP and should not be
+ * used directly by an application or by a device driver.
+ */
+/*---------------------------------------------------------------------------*/
+
+
+
+/* uint8_t uip_flags:
+ *
+ * When the application is called, uip_flags will contain the flags
+ * that are defined in this file. Please read below for more
+ * information.
+ */
+CCIF extern uint8_t uip_flags;
+
+/* The following flags may be set in the global variable uip_flags
+ before calling the application callback. The UIP_ACKDATA,
+ UIP_NEWDATA, and UIP_CLOSE flags may both be set at the same time,
+ whereas the others are mutually exclusive. Note that these flags
+ should *NOT* be accessed directly, but only through the uIP
+ functions/macros. */
+
+#define UIP_ACKDATA 1 /* Signifies that the outstanding data was
+ acked and the application should send
+ out new data instead of retransmitting
+ the last data. */
+#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent
+ us new data. */
+#define UIP_REXMIT 4 /* Tells the application to retransmit the
+ data that was last sent. */
+#define UIP_POLL 8 /* Used for polling the application, to
+ check if the application has data that
+ it wants to send. */
+#define UIP_CLOSE 16 /* The remote host has closed the
+ connection, thus the connection has
+ gone away. Or the application signals
+ that it wants to close the
+ connection. */
+#define UIP_ABORT 32 /* The remote host has aborted the
+ connection, thus the connection has
+ gone away. Or the application signals
+ that it wants to abort the
+ connection. */
+#define UIP_CONNECTED 64 /* We have got a connection from a remote
+ host and have set up a new connection
+ for it, or an active connection has
+ been successfully established. */
+
+#define UIP_TIMEDOUT 128 /* The connection has been aborted due to
+ too many retransmissions. */
+
+
+/**
+ * \brief process the options within a hop by hop or destination option header
+ * \retval 0: nothing to send,
+ * \retval 1: drop pkt
+ * \retval 2: ICMP error message to send
+*/
+/*static uint8_t
+uip_ext_hdr_options_process(); */
+
+/* uip_process(flag):
+ *
+ * The actual uIP function which does all the work.
+ */
+void uip_process(uint8_t flag);
+
+ /* The following flags are passed as an argument to the uip_process()
+ function. They are used to distinguish between the two cases where
+ uip_process() is called. It can be called either because we have
+ incoming data that should be processed, or because the periodic
+ timer has fired. These values are never used directly, but only in
+ the macros defined in this file. */
+
+#define UIP_DATA 1 /* Tells uIP that there is incoming
+ data in the uip_buf buffer. The
+ length of the data is stored in the
+ global variable uip_len. */
+#define UIP_TIMER 2 /* Tells uIP that the periodic timer
+ has fired. */
+#define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should
+ be polled. */
+#define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram
+ should be constructed in the
+ uip_buf buffer. */
+#if UIP_UDP
+#define UIP_UDP_TIMER 5
+#endif /* UIP_UDP */
+
+/* The TCP states used in the uip_conn->tcpstateflags. */
+#define UIP_CLOSED 0
+#define UIP_SYN_RCVD 1
+#define UIP_SYN_SENT 2
+#define UIP_ESTABLISHED 3
+#define UIP_FIN_WAIT_1 4
+#define UIP_FIN_WAIT_2 5
+#define UIP_CLOSING 6
+#define UIP_TIME_WAIT 7
+#define UIP_LAST_ACK 8
+#define UIP_TS_MASK 15
+
+#define UIP_STOPPED 16
+
+/* The TCP and IP headers. */
+struct uip_tcpip_hdr {
+#if NETSTACK_CONF_WITH_IPV6
+ /* IPv6 header. */
+ uint8_t vtc,
+ tcflow;
+ uint16_t flow;
+ uint8_t len[2];
+ uint8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ /* IPv4 header. */
+ uint8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ uint16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ /* TCP header. */
+ uint16_t srcport,
+ destport;
+ uint8_t seqno[4],
+ ackno[4],
+ tcpoffset,
+ flags,
+ wnd[2];
+ uint16_t tcpchksum;
+ uint8_t urgp[2];
+ uint8_t optdata[4];
+};
+
+/* The ICMP and IP headers. */
+struct uip_icmpip_hdr {
+#if NETSTACK_CONF_WITH_IPV6
+ /* IPv6 header. */
+ uint8_t vtc,
+ tcf;
+ uint16_t flow;
+ uint8_t len[2];
+ uint8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ /* IPv4 header. */
+ uint8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ uint16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ /* ICMP header. */
+ uint8_t type, icode;
+ uint16_t icmpchksum;
+#if !NETSTACK_CONF_WITH_IPV6
+ uint16_t id, seqno;
+ uint8_t payload[1];
+#endif /* !NETSTACK_CONF_WITH_IPV6 */
+};
+
+
+/* The UDP and IP headers. */
+struct uip_udpip_hdr {
+#if NETSTACK_CONF_WITH_IPV6
+ /* IPv6 header. */
+ uint8_t vtc,
+ tcf;
+ uint16_t flow;
+ uint8_t len[2];
+ uint8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ /* IP header. */
+ uint8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ uint16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+ /* UDP header. */
+ uint16_t srcport,
+ destport;
+ uint16_t udplen;
+ uint16_t udpchksum;
+};
+
+/*
+ * In IPv6 the length of the L3 headers before the transport header is
+ * not fixed, due to the possibility to include extension option headers
+ * after the IP header. hence we split here L3 and L4 headers
+ */
+/* The IP header */
+struct uip_ip_hdr {
+#if NETSTACK_CONF_WITH_IPV6
+ /* IPV6 header */
+ uint8_t vtc;
+ uint8_t tcflow;
+ uint16_t flow;
+ uint8_t len[2];
+ uint8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* NETSTACK_CONF_WITH_IPV6 */
+ /* IPV4 header */
+ uint8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ uint16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+};
+
+
+/*
+ * IPv6 extension option headers: we are able to process
+ * the 4 extension headers defined in RFC2460 (IPv6):
+ * - Hop by hop option header, destination option header:
+ * These two are not used by any core IPv6 protocol, hence
+ * we just read them and go to the next. They convey options,
+ * the options defined in RFC2460 are Pad1 and PadN, which do
+ * some padding, and that we do not need to read (the length
+ * field in the header is enough)
+ * - Routing header: this one is most notably used by MIPv6,
+ * which we do not implement, hence we just read it and go
+ * to the next
+ * - Fragmentation header: we read this header and are able to
+ * reassemble packets
+ *
+ * We do not offer any means to send packets with extension headers
+ *
+ * We do not implement Authentication and ESP headers, which are
+ * used in IPSec and defined in RFC4302,4303,4305,4385
+ */
+/* common header part */
+typedef struct uip_ext_hdr {
+ uint8_t next;
+ uint8_t len;
+} uip_ext_hdr;
+
+/* Hop by Hop option header */
+typedef struct uip_hbho_hdr {
+ uint8_t next;
+ uint8_t len;
+} uip_hbho_hdr;
+
+/* destination option header */
+typedef struct uip_desto_hdr {
+ uint8_t next;
+ uint8_t len;
+} uip_desto_hdr;
+
+/* We do not define structures for PAD1 and PADN options */
+
+/*
+ * routing header
+ * the routing header as 4 common bytes, then routing header type
+ * specific data there are several types of routing header. Type 0 was
+ * deprecated as per RFC5095 most notable other type is 2, used in
+ * RFC3775 (MIPv6) here we do not implement MIPv6, so we just need to
+ * parse the 4 first bytes
+ */
+typedef struct uip_routing_hdr {
+ uint8_t next;
+ uint8_t len;
+ uint8_t routing_type;
+ uint8_t seg_left;
+} uip_routing_hdr;
+
+/* RPL Source Routing Header */
+typedef struct uip_rpl_srh_hdr {
+ uint8_t cmpr; /* CmprI and CmprE */
+ uint8_t pad;
+ uint8_t reserved[2];
+} uip_rpl_srh_hdr;
+
+/* fragmentation header */
+typedef struct uip_frag_hdr {
+ uint8_t next;
+ uint8_t res;
+ uint16_t offsetresmore;
+ uint32_t id;
+} uip_frag_hdr;
+
+/*
+ * an option within the destination or hop by hop option headers
+ * it contains type an length, which is true for all options but PAD1
+ */
+typedef struct uip_ext_hdr_opt {
+ uint8_t type;
+ uint8_t len;
+} uip_ext_hdr_opt;
+
+/* PADN option */
+typedef struct uip_ext_hdr_opt_padn {
+ uint8_t opt_type;
+ uint8_t opt_len;
+} uip_ext_hdr_opt_padn;
+
+/* RPL option */
+typedef struct uip_ext_hdr_opt_rpl {
+ uint8_t opt_type;
+ uint8_t opt_len;
+ uint8_t flags;
+ uint8_t instance;
+ uint16_t senderrank;
+} uip_ext_hdr_opt_rpl;
+
+/* TCP header */
+struct uip_tcp_hdr {
+ uint16_t srcport;
+ uint16_t destport;
+ uint8_t seqno[4];
+ uint8_t ackno[4];
+ uint8_t tcpoffset;
+ uint8_t flags;
+ uint8_t wnd[2];
+ uint16_t tcpchksum;
+ uint8_t urgp[2];
+ uint8_t optdata[4];
+};
+
+/* The ICMP headers. */
+struct uip_icmp_hdr {
+ uint8_t type, icode;
+ uint16_t icmpchksum;
+#if !NETSTACK_CONF_WITH_IPV6
+ uint16_t id, seqno;
+#endif /* !NETSTACK_CONF_WITH_IPV6 */
+};
+
+
+/* The UDP headers. */
+struct uip_udp_hdr {
+ uint16_t srcport;
+ uint16_t destport;
+ uint16_t udplen;
+ uint16_t udpchksum;
+};
+
+
+/**
+ * The buffer size available for user data in the \ref uip_buf buffer.
+ *
+ * This macro holds the available size for user data in the \ref
+ * uip_buf buffer. The macro is intended to be used for checking
+ * bounds of available user data.
+ *
+ * Example:
+ \code
+ snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i);
+ \endcode
+ *
+ * \hideinitializer
+ */
+#define UIP_APPDATA_SIZE (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
+#define UIP_APPDATA_PTR (void *)&uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]
+
+#define UIP_PROTO_ICMP 1
+#define UIP_PROTO_TCP 6
+#define UIP_PROTO_UDP 17
+#define UIP_PROTO_ICMP6 58
+
+
+#if NETSTACK_CONF_WITH_IPV6
+/** @{ */
+/** \brief extension headers types */
+#define UIP_PROTO_HBHO 0
+#define UIP_PROTO_DESTO 60
+#define UIP_PROTO_ROUTING 43
+#define UIP_PROTO_FRAG 44
+#define UIP_PROTO_NONE 59
+/** @} */
+
+/** @{ */
+/** \brief Destination and Hop By Hop extension headers option types */
+#define UIP_EXT_HDR_OPT_PAD1 0
+#define UIP_EXT_HDR_OPT_PADN 1
+#define UIP_EXT_HDR_OPT_RPL 0x63
+
+/** @} */
+
+/** @{ */
+/**
+ * \brief Bitmaps for extension header processing
+ *
+ * When processing extension headers, we should record somehow which one we
+ * see, because you cannot have twice the same header, except for destination
+ * We store all this in one uint8_t bitmap one bit for each header expected. The
+ * order in the bitmap is the order recommended in RFC2460
+ */
+#define UIP_EXT_HDR_BITMAP_HBHO 0x01
+#define UIP_EXT_HDR_BITMAP_DESTO1 0x02
+#define UIP_EXT_HDR_BITMAP_ROUTING 0x04
+#define UIP_EXT_HDR_BITMAP_FRAG 0x08
+#define UIP_EXT_HDR_BITMAP_AH 0x10
+#define UIP_EXT_HDR_BITMAP_ESP 0x20
+#define UIP_EXT_HDR_BITMAP_DESTO2 0x40
+/** @} */
+
+
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+
+#if UIP_FIXEDADDR
+CCIF extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
+#else /* UIP_FIXEDADDR */
+CCIF extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
+#endif /* UIP_FIXEDADDR */
+CCIF extern const uip_ipaddr_t uip_broadcast_addr;
+CCIF extern const uip_ipaddr_t uip_all_zeroes_addr;
+
+#if UIP_FIXEDETHADDR
+CCIF extern const uip_lladdr_t uip_lladdr;
+#else
+CCIF extern uip_lladdr_t uip_lladdr;
+#endif
+
+
+
+
+#if NETSTACK_CONF_WITH_IPV6
+/** Length of the link local prefix */
+#define UIP_LLPREF_LEN 10
+
+/**
+ * \brief Is IPv6 address a the unspecified address
+ * a is of type uip_ipaddr_t
+ */
+#define uip_is_addr_loopback(a) \
+ ((((a)->u16[0]) == 0) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 0x01))
+/**
+ * \brief Is IPv6 address a the unspecified address
+ * a is of type uip_ipaddr_t
+ */
+#define uip_is_addr_unspecified(a) \
+ ((((a)->u16[0]) == 0) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u16[7]) == 0))
+
+/** \brief Is IPv6 address a the link local all-nodes multicast address */
+#define uip_is_addr_linklocal_allnodes_mcast(a) \
+ ((((a)->u8[0]) == 0xff) && \
+ (((a)->u8[1]) == 0x02) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 0x01))
+
+/** \brief Is IPv6 address a the link local all-routers multicast address */
+#define uip_is_addr_linklocal_allrouters_mcast(a) \
+ ((((a)->u8[0]) == 0xff) && \
+ (((a)->u8[1]) == 0x02) && \
+ (((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 0x02))
+
+/**
+ * \brief is addr (a) a link local unicast address, see RFC3513
+ * i.e. is (a) on prefix FE80::/10
+ * a is of type uip_ipaddr_t*
+ */
+#define uip_is_addr_linklocal(a) \
+ ((a)->u8[0] == 0xfe && \
+ (a)->u8[1] == 0x80)
+
+/** \brief set IP address a to unspecified */
+#define uip_create_unspecified(a) uip_ip6addr(a, 0, 0, 0, 0, 0, 0, 0, 0)
+
+/** \brief set IP address a to the link local all-nodes multicast address */
+#define uip_create_linklocal_allnodes_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0001)
+
+/** \brief set IP address a to the link local all-routers multicast address */
+#define uip_create_linklocal_allrouters_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002)
+#define uip_create_linklocal_prefix(addr) do { \
+ (addr)->u16[0] = UIP_HTONS(0xfe80); \
+ (addr)->u16[1] = 0; \
+ (addr)->u16[2] = 0; \
+ (addr)->u16[3] = 0; \
+ } while(0)
+
+/**
+ * \brief is addr (a) a solicited node multicast address, see RFC3513
+ * a is of type uip_ipaddr_t*
+ */
+#define uip_is_addr_solicited_node(a) \
+ ((((a)->u8[0]) == 0xFF) && \
+ (((a)->u8[1]) == 0x02) && \
+ (((a)->u16[1]) == 0x00) && \
+ (((a)->u16[2]) == 0x00) && \
+ (((a)->u16[3]) == 0x00) && \
+ (((a)->u16[4]) == 0x00) && \
+ (((a)->u8[10]) == 0x00) && \
+ (((a)->u8[11]) == 0x01) && \
+ (((a)->u8[12]) == 0xFF))
+
+/**
+ * \brief put in b the solicited node address corresponding to address a
+ * both a and b are of type uip_ipaddr_t*
+ * */
+#define uip_create_solicited_node(a, b) \
+ (((b)->u8[0]) = 0xFF); \
+ (((b)->u8[1]) = 0x02); \
+ (((b)->u16[1]) = 0); \
+ (((b)->u16[2]) = 0); \
+ (((b)->u16[3]) = 0); \
+ (((b)->u16[4]) = 0); \
+ (((b)->u8[10]) = 0); \
+ (((b)->u8[11]) = 0x01); \
+ (((b)->u8[12]) = 0xFF); \
+ (((b)->u8[13]) = ((a)->u8[13])); \
+ (((b)->u16[7]) = ((a)->u16[7]))
+
+/**
+ * \brief was addr (a) forged based on the mac address m
+ * a type is uip_ipaddr_t
+ * m type is uiplladdr_t
+ */
+#if UIP_CONF_LL_802154
+#define uip_is_addr_mac_addr_based(a, m) \
+ ((((a)->u8[8]) == (((m)->addr[0]) ^ 0x02)) && \
+ (((a)->u8[9]) == (m)->addr[1]) && \
+ (((a)->u8[10]) == (m)->addr[2]) && \
+ (((a)->u8[11]) == (m)->addr[3]) && \
+ (((a)->u8[12]) == (m)->addr[4]) && \
+ (((a)->u8[13]) == (m)->addr[5]) && \
+ (((a)->u8[14]) == (m)->addr[6]) && \
+ (((a)->u8[15]) == (m)->addr[7]))
+#else
+
+#define uip_is_addr_mac_addr_based(a, m) \
+ ((((a)->u8[8]) == (((m)->addr[0]) | 0x02)) && \
+ (((a)->u8[9]) == (m)->addr[1]) && \
+ (((a)->u8[10]) == (m)->addr[2]) && \
+ (((a)->u8[11]) == 0xff) && \
+ (((a)->u8[12]) == 0xfe) && \
+ (((a)->u8[13]) == (m)->addr[3]) && \
+ (((a)->u8[14]) == (m)->addr[4]) && \
+ (((a)->u8[15]) == (m)->addr[5]))
+
+#endif /*UIP_CONF_LL_802154*/
+
+/**
+ * \brief is address a multicast address, see RFC 3513
+ * a is of type uip_ipaddr_t*
+ * */
+#define uip_is_addr_mcast(a) \
+ (((a)->u8[0]) == 0xFF)
+
+/**
+ * \brief is address a global multicast address (FFxE::/16),
+ * a is of type uip_ip6addr_t*
+ * */
+#define uip_is_addr_mcast_global(a) \
+ ((((a)->u8[0]) == 0xFF) && \
+ (((a)->u8[1] & 0x0F) == 0x0E))
+
+/**
+ * \brief is address a non-routable multicast address.
+ * Scopes 1 (interface-local) and 2 (link-local) are non-routable
+ * See RFC4291 and draft-ietf-6man-multicast-scopes
+ * a is of type uip_ip6addr_t*
+ * */
+#define uip_is_addr_mcast_non_routable(a) \
+ ((((a)->u8[0]) == 0xFF) && \
+ (((a)->u8[1] & 0x0F) <= 0x02))
+
+/**
+ * \brief is address a routable multicast address.
+ * Scope 3 (Realm-Local) or higher are routable
+ * Realm-Local scope is defined in draft-ietf-6man-multicast-scopes
+ * See RFC4291 and draft-ietf-6man-multicast-scopes
+ * a is of type uip_ip6addr_t*
+ * */
+#define uip_is_addr_mcast_routable(a) \
+ ((((a)->u8[0]) == 0xFF) && \
+ (((a)->u8[1] & 0x0F) > 0x02))
+
+/**
+ * \brief is group-id of multicast address a
+ * the all nodes group-id
+ */
+#define uip_is_mcast_group_id_all_nodes(a) \
+ ((((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 1))
+
+/**
+ * \brief is group-id of multicast address a
+ * the all routers group-id
+ */
+#define uip_is_mcast_group_id_all_routers(a) \
+ ((((a)->u16[1]) == 0) && \
+ (((a)->u16[2]) == 0) && \
+ (((a)->u16[3]) == 0) && \
+ (((a)->u16[4]) == 0) && \
+ (((a)->u16[5]) == 0) && \
+ (((a)->u16[6]) == 0) && \
+ (((a)->u8[14]) == 0) && \
+ (((a)->u8[15]) == 2))
+
+
+/**
+ * \brief are last three bytes of both addresses equal?
+ * This is used to compare solicited node multicast addresses
+ */
+#define uip_are_solicited_bytes_equal(a, b) \
+ ((((a)->u8[13]) == ((b)->u8[13])) && \
+ (((a)->u8[14]) == ((b)->u8[14])) && \
+ (((a)->u8[15]) == ((b)->u8[15])))
+
+#endif /*NETSTACK_CONF_WITH_IPV6*/
+
+/**
+ * Calculate the Internet checksum over a buffer.
+ *
+ * The Internet checksum is the one's complement of the one's
+ * complement sum of all 16-bit words in the buffer.
+ *
+ * See RFC1071.
+ *
+ * \param data A pointer to the buffer over which the checksum is to be
+ * computed.
+ *
+ * \param len The length of the buffer over which the checksum is to
+ * be computed.
+ *
+ * \return The Internet checksum of the buffer.
+ */
+uint16_t uip_chksum(uint16_t *data, uint16_t len);
+
+/**
+ * Calculate the IP header checksum of the packet header in uip_buf.
+ *
+ * The IP header checksum is the Internet checksum of the 20 bytes of
+ * the IP header.
+ *
+ * \return The IP header checksum of the IP header in the uip_buf
+ * buffer.
+ */
+uint16_t uip_ipchksum(void);
+
+/**
+ * Calculate the TCP checksum of the packet in uip_buf and uip_appdata.
+ *
+ * The TCP checksum is the Internet checksum of data contents of the
+ * TCP segment, and a pseudo-header as defined in RFC793.
+ *
+ * \return The TCP checksum of the TCP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+uint16_t uip_tcpchksum(void);
+
+/**
+ * Calculate the UDP checksum of the packet in uip_buf and uip_appdata.
+ *
+ * The UDP checksum is the Internet checksum of data contents of the
+ * UDP segment, and a pseudo-header as defined in RFC768.
+ *
+ * \return The UDP checksum of the UDP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+uint16_t uip_udpchksum(void);
+
+/**
+ * Calculate the ICMP checksum of the packet in uip_buf.
+ *
+ * \return The ICMP checksum of the ICMP packet in uip_buf
+ */
+uint16_t uip_icmp6chksum(void);
+
+
+#endif /* UIP_H_ */
+
+
+/** @} */
--- /dev/null
+/*
+ * Copyright (c) 2001, Adam Dunkels.
+ * 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 uIP TCP/IP stack.
+ *
+ *
+ */
+
+/**
+ * \file
+ * Declarations of architecture specific functions.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/**
+ * \addtogroup uip
+ * {@
+ */
+
+/**
+ * \defgroup uiparch Architecture specific uIP functions
+ * @{
+ *
+ * The functions in the architecture specific module implement the IP
+ * check sum and 32-bit additions.
+ *
+ * The IP checksum calculation is the most computationally expensive
+ * operation in the TCP/IP stack and it therefore pays off to
+ * implement this in efficient assembler. The purpose of the uip-arch
+ * module is to let the checksum functions to be implemented in
+ * architecture specific assembler.
+ *
+ */
+
+#ifndef UIP_ARCH_H_
+#define UIP_ARCH_H_
+
+#include "uip.h"
+
+/**
+ * Carry out a 32-bit addition.
+ *
+ * Because not all architectures for which uIP is intended has native
+ * 32-bit arithmetic, uIP uses an external C function for doing the
+ * required 32-bit additions in the TCP protocol processing. This
+ * function should add the two arguments and place the result in the
+ * global variable uip_acc32.
+ *
+ * \note The 32-bit integer pointed to by the op32 parameter and the
+ * result in the uip_acc32 variable are in network byte order (big
+ * endian).
+ *
+ * \param op32 A pointer to a 4-byte array representing a 32-bit
+ * integer in network byte order (big endian).
+ *
+ * \param op16 A 16-bit integer in host byte order.
+ */
+void uip_add32(uint8_t *op32, uint16_t op16);
+
+/**
+ * Calculate the Internet checksum over a buffer.
+ *
+ * The Internet checksum is the one's complement of the one's
+ * complement sum of all 16-bit words in the buffer.
+ *
+ * See RFC1071.
+ *
+ * \note This function is not called in the current version of uIP,
+ * but future versions might make use of it.
+ *
+ * \param data A pointer to the buffer over which the checksum is to be
+ * computed.
+ *
+ * \param len The length of the buffer over which the checksum is to
+ * be computed.
+ *
+ * \return The Internet checksum of the buffer.
+ */
+uint16_t uip_chksum(uint16_t *data, uint16_t len);
+
+/**
+ * Calculate the IP header checksum of the packet header in uip_buf.
+ *
+ * The IP header checksum is the Internet checksum of the 20 bytes of
+ * the IP header.
+ *
+ * \return The IP header checksum of the IP header in the uip_buf
+ * buffer.
+ */
+uint16_t uip_ipchksum(void);
+
+/**
+ * Calculate the TCP checksum of the packet in uip_buf and uip_appdata.
+ *
+ * The TCP checksum is the Internet checksum of data contents of the
+ * TCP segment, and a pseudo-header as defined in RFC793.
+ *
+ * \note The uip_appdata pointer that points to the packet data may
+ * point anywhere in memory, so it is not possible to simply calculate
+ * the Internet checksum of the contents of the uip_buf buffer.
+ *
+ * \return The TCP checksum of the TCP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+uint16_t uip_tcpchksum(void);
+
+uint16_t uip_udpchksum(void);
+
+/** @} */
+/** @} */
+
+#endif /* UIP_ARCH_H_ */
--- /dev/null
+/*
+ * Copyright (c) 2001-2003, Adam Dunkels.
+ * 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 uIP TCP/IP stack.
+ *
+ *
+ */
+
+/**
+ * \file
+ * Implementation of the ARP Address Resolution Protocol.
+ * \author Adam Dunkels <adam@dunkels.com>
+ *
+ */
+
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \defgroup uiparp uIP Address Resolution Protocol
+ * @{
+ *
+ * The Address Resolution Protocol ARP is used for mapping between IP
+ * addresses and link level addresses such as the Ethernet MAC
+ * addresses. ARP uses broadcast queries to ask for the link level
+ * address of a known IP address and the host which is configured with
+ * the IP address for which the query was meant, will respond with its
+ * link level address.
+ *
+ * \note This ARP implementation only supports Ethernet.
+ */
+
+#include "uip_arp.h"
+
+#include <string.h>
+
+struct arp_hdr {
+ struct uip_eth_hdr ethhdr;
+ uint16_t hwtype;
+ uint16_t protocol;
+ uint8_t hwlen;
+ uint8_t protolen;
+ uint16_t opcode;
+ struct uip_eth_addr shwaddr;
+ uip_ipaddr_t sipaddr;
+ struct uip_eth_addr dhwaddr;
+ uip_ipaddr_t dipaddr;
+};
+
+struct ethip_hdr {
+ struct uip_eth_hdr ethhdr;
+ /* IP header. */
+ uint8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ uint16_t ipchksum;
+ uip_ipaddr_t srcipaddr, destipaddr;
+};
+
+#define ARP_REQUEST 1
+#define ARP_REPLY 2
+
+#define ARP_HWTYPE_ETH 1
+
+struct arp_entry {
+ uip_ipaddr_t ipaddr;
+ struct uip_eth_addr ethaddr;
+ uint8_t time;
+};
+
+static const struct uip_eth_addr broadcast_ethaddr =
+ {{0xff,0xff,0xff,0xff,0xff,0xff}};
+
+static struct arp_entry arp_table[UIP_ARPTAB_SIZE];
+static uip_ipaddr_t ipaddr;
+static uint8_t i, c;
+
+static uint8_t arptime;
+static uint8_t tmpage;
+
+#define BUF ((struct arp_hdr *)&uip_buf[0])
+#define IPBUF ((struct ethip_hdr *)&uip_buf[0])
+
+#define DEBUG 0
+#if DEBUG
+#include <stdio.h>
+#define PRINTF(...) printf(__VA_ARGS__)
+#else
+#define PRINTF(...)
+#endif
+
+/*-----------------------------------------------------------------------------------*/
+/**
+ * Initialize the ARP module.
+ *
+ */
+/*-----------------------------------------------------------------------------------*/
+void
+uip_arp_init(void)
+{
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ memset(&arp_table[i].ipaddr, 0, 4);
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+/**
+ * Periodic ARP processing function.
+ *
+ * This function performs periodic timer processing in the ARP module
+ * and should be called at regular intervals. The recommended interval
+ * is 10 seconds between the calls.
+ *
+ */
+/*-----------------------------------------------------------------------------------*/
+void
+uip_arp_timer(void)
+{
+ struct arp_entry *tabptr;
+
+ ++arptime;
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ tabptr = &arp_table[i];
+ if(uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr) &&
+ arptime - tabptr->time >= UIP_ARP_MAXAGE) {
+ memset(&tabptr->ipaddr, 0, 4);
+ }
+ }
+
+}
+
+/*-----------------------------------------------------------------------------------*/
+static void
+uip_arp_update(uip_ipaddr_t *ipaddr, struct uip_eth_addr *ethaddr)
+{
+ register struct arp_entry *tabptr = arp_table;
+
+ /* Walk through the ARP mapping table and try to find an entry to
+ update. If none is found, the IP -> MAC address mapping is
+ inserted in the ARP table. */
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ tabptr = &arp_table[i];
+
+ /* Only check those entries that are actually in use. */
+ if(!uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr)) {
+
+ /* Check if the source IP address of the incoming packet matches
+ the IP address in this ARP table entry. */
+ if(uip_ipaddr_cmp(ipaddr, &tabptr->ipaddr)) {
+
+ /* An old entry found, update this and return. */
+ memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
+ tabptr->time = arptime;
+
+ return;
+ }
+ }
+ tabptr++;
+ }
+
+ /* If we get here, no existing ARP table entry was found, so we
+ create one. */
+
+ /* First, we try to find an unused entry in the ARP table. */
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ tabptr = &arp_table[i];
+ if(uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr)) {
+ break;
+ }
+ }
+
+ /* If no unused entry is found, we try to find the oldest entry and
+ throw it away. */
+ if(i == UIP_ARPTAB_SIZE) {
+ tmpage = 0;
+ c = 0;
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ tabptr = &arp_table[i];
+ if(arptime - tabptr->time > tmpage) {
+ tmpage = arptime - tabptr->time;
+ c = i;
+ }
+ }
+ i = c;
+ tabptr = &arp_table[i];
+ }
+
+ /* Now, i is the ARP table entry which we will fill with the new
+ information. */
+ uip_ipaddr_copy(&tabptr->ipaddr, ipaddr);
+ memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
+ tabptr->time = arptime;
+}
+/*-----------------------------------------------------------------------------------*/
+/**
+ * ARP processing for incoming IP packets
+ *
+ * This function should be called by the device driver when an IP
+ * packet has been received. The function will check if the address is
+ * in the ARP cache, and if so the ARP cache entry will be
+ * refreshed. If no ARP cache entry was found, a new one is created.
+ *
+ * This function expects an IP packet with a prepended Ethernet header
+ * in the uip_buf[] buffer, and the length of the packet in the global
+ * variable uip_len.
+ */
+/*-----------------------------------------------------------------------------------*/
+#if 0
+void
+uip_arp_ipin(void)
+{
+ uip_len -= sizeof(struct uip_eth_hdr);
+
+ /* Only insert/update an entry if the source IP address of the
+ incoming IP packet comes from a host on the local network. */
+ if((IPBUF->srcipaddr[0] & uip_netmask[0]) !=
+ (uip_hostaddr[0] & uip_netmask[0])) {
+ return;
+ }
+ if((IPBUF->srcipaddr[1] & uip_netmask[1]) !=
+ (uip_hostaddr[1] & uip_netmask[1])) {
+ return;
+ }
+ uip_arp_update(IPBUF->srcipaddr, &(IPBUF->ethhdr.src));
+
+ return;
+}
+#endif /* 0 */
+/*-----------------------------------------------------------------------------------*/
+/**
+ * ARP processing for incoming ARP packets.
+ *
+ * This function should be called by the device driver when an ARP
+ * packet has been received. The function will act differently
+ * depending on the ARP packet type: if it is a reply for a request
+ * that we previously sent out, the ARP cache will be filled in with
+ * the values from the ARP reply. If the incoming ARP packet is an ARP
+ * request for our IP address, an ARP reply packet is created and put
+ * into the uip_buf[] buffer.
+ *
+ * When the function returns, the value of the global variable uip_len
+ * indicates whether the device driver should send out a packet or
+ * not. If uip_len is zero, no packet should be sent. If uip_len is
+ * non-zero, it contains the length of the outbound packet that is
+ * present in the uip_buf[] buffer.
+ *
+ * This function expects an ARP packet with a prepended Ethernet
+ * header in the uip_buf[] buffer, and the length of the packet in the
+ * global variable uip_len.
+ */
+/*-----------------------------------------------------------------------------------*/
+void
+uip_arp_arpin(void)
+{
+
+ if(uip_len < sizeof(struct arp_hdr)) {
+ uip_clear_buf();
+ return;
+ }
+ uip_clear_buf();
+
+ switch(BUF->opcode) {
+ case UIP_HTONS(ARP_REQUEST):
+ /* ARP request. If it asked for our address, we send out a
+ reply. */
+ /* if(BUF->dipaddr[0] == uip_hostaddr[0] &&
+ BUF->dipaddr[1] == uip_hostaddr[1]) {*/
+ PRINTF("uip_arp_arpin: request for %d.%d.%d.%d (we are %d.%d.%d.%d)\n",
+ BUF->dipaddr.u8[0], BUF->dipaddr.u8[1],
+ BUF->dipaddr.u8[2], BUF->dipaddr.u8[3],
+ uip_hostaddr.u8[0], uip_hostaddr.u8[1],
+ uip_hostaddr.u8[2], uip_hostaddr.u8[3]);
+ if(uip_ipaddr_cmp(&BUF->dipaddr, &uip_hostaddr)) {
+ /* First, we register the one who made the request in our ARP
+ table, since it is likely that we will do more communication
+ with this host in the future. */
+ uip_arp_update(&BUF->sipaddr, &BUF->shwaddr);
+
+ BUF->opcode = UIP_HTONS(ARP_REPLY);
+
+ memcpy(BUF->dhwaddr.addr, BUF->shwaddr.addr, 6);
+ memcpy(BUF->shwaddr.addr, uip_lladdr.addr, 6);
+ memcpy(BUF->ethhdr.src.addr, uip_lladdr.addr, 6);
+ memcpy(BUF->ethhdr.dest.addr, BUF->dhwaddr.addr, 6);
+
+ uip_ipaddr_copy(&BUF->dipaddr, &BUF->sipaddr);
+ uip_ipaddr_copy(&BUF->sipaddr, &uip_hostaddr);
+
+ BUF->ethhdr.type = UIP_HTONS(UIP_ETHTYPE_ARP);
+ uip_len = sizeof(struct arp_hdr);
+ }
+ break;
+ case UIP_HTONS(ARP_REPLY):
+ /* ARP reply. We insert or update the ARP table if it was meant
+ for us. */
+ if(uip_ipaddr_cmp(&BUF->dipaddr, &uip_hostaddr)) {
+ uip_arp_update(&BUF->sipaddr, &BUF->shwaddr);
+ }
+ break;
+ }
+
+ return;
+}
+/*-----------------------------------------------------------------------------------*/
+/**
+ * Prepend Ethernet header to an outbound IP packet and see if we need
+ * to send out an ARP request.
+ *
+ * This function should be called before sending out an IP packet. The
+ * function checks the destination IP address of the IP packet to see
+ * what Ethernet MAC address that should be used as a destination MAC
+ * address on the Ethernet.
+ *
+ * If the destination IP address is in the local network (determined
+ * by logical ANDing of netmask and our IP address), the function
+ * checks the ARP cache to see if an entry for the destination IP
+ * address is found. If so, an Ethernet header is prepended and the
+ * function returns. If no ARP cache entry is found for the
+ * destination IP address, the packet in the uip_buf[] is replaced by
+ * an ARP request packet for the IP address. The IP packet is dropped
+ * and it is assumed that they higher level protocols (e.g., TCP)
+ * eventually will retransmit the dropped packet.
+ *
+ * If the destination IP address is not on the local network, the IP
+ * address of the default router is used instead.
+ *
+ * When the function returns, a packet is present in the uip_buf[]
+ * buffer, and the length of the packet is in the global variable
+ * uip_len.
+ */
+/*-----------------------------------------------------------------------------------*/
+void
+uip_arp_out(void)
+{
+ struct arp_entry *tabptr = arp_table;
+
+ /* Find the destination IP address in the ARP table and construct
+ the Ethernet header. If the destination IP addres isn't on the
+ local network, we use the default router's IP address instead.
+
+ If not ARP table entry is found, we overwrite the original IP
+ packet with an ARP request for the IP address. */
+
+ /* First check if destination is a local broadcast. */
+ if(uip_ipaddr_cmp(&IPBUF->destipaddr, &uip_broadcast_addr)) {
+ memcpy(IPBUF->ethhdr.dest.addr, broadcast_ethaddr.addr, 6);
+ } else if(IPBUF->destipaddr.u8[0] == 224) {
+ /* Multicast. */
+ IPBUF->ethhdr.dest.addr[0] = 0x01;
+ IPBUF->ethhdr.dest.addr[1] = 0x00;
+ IPBUF->ethhdr.dest.addr[2] = 0x5e;
+ IPBUF->ethhdr.dest.addr[3] = IPBUF->destipaddr.u8[1];
+ IPBUF->ethhdr.dest.addr[4] = IPBUF->destipaddr.u8[2];
+ IPBUF->ethhdr.dest.addr[5] = IPBUF->destipaddr.u8[3];
+ } else {
+ /* Check if the destination address is on the local network. */
+ if(!uip_ipaddr_maskcmp(&IPBUF->destipaddr, &uip_hostaddr, &uip_netmask)) {
+ /* Destination address was not on the local network, so we need to
+ use the default router's IP address instead of the destination
+ address when determining the MAC address. */
+ uip_ipaddr_copy(&ipaddr, &uip_draddr);
+ } else {
+ /* Else, we use the destination IP address. */
+ uip_ipaddr_copy(&ipaddr, &IPBUF->destipaddr);
+ }
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ if(uip_ipaddr_cmp(&ipaddr, &tabptr->ipaddr)) {
+ break;
+ }
+ tabptr++;
+ }
+
+ if(i == UIP_ARPTAB_SIZE) {
+ /* The destination address was not in our ARP table, so we
+ overwrite the IP packet with an ARP request. */
+
+ memset(BUF->ethhdr.dest.addr, 0xff, 6);
+ memset(BUF->dhwaddr.addr, 0x00, 6);
+ memcpy(BUF->ethhdr.src.addr, uip_lladdr.addr, 6);
+ memcpy(BUF->shwaddr.addr, uip_lladdr.addr, 6);
+
+ uip_ipaddr_copy(&BUF->dipaddr, &ipaddr);
+ uip_ipaddr_copy(&BUF->sipaddr, &uip_hostaddr);
+ BUF->opcode = UIP_HTONS(ARP_REQUEST); /* ARP request. */
+ BUF->hwtype = UIP_HTONS(ARP_HWTYPE_ETH);
+ BUF->protocol = UIP_HTONS(UIP_ETHTYPE_IP);
+ BUF->hwlen = 6;
+ BUF->protolen = 4;
+ BUF->ethhdr.type = UIP_HTONS(UIP_ETHTYPE_ARP);
+
+ uip_appdata = &uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN];
+
+ uip_len = sizeof(struct arp_hdr);
+ return;
+ }
+
+ /* Build an ethernet header. */
+ memcpy(IPBUF->ethhdr.dest.addr, tabptr->ethaddr.addr, 6);
+ }
+ memcpy(IPBUF->ethhdr.src.addr, uip_lladdr.addr, 6);
+
+ IPBUF->ethhdr.type = UIP_HTONS(UIP_ETHTYPE_IP);
+
+ uip_len += sizeof(struct uip_eth_hdr);
+}
+/*-----------------------------------------------------------------------------------*/
+
+/** @} */
+/** @} */
+
--- /dev/null
+/*
+ * Copyright (c) 2001-2003, Adam Dunkels.
+ * 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 uIP TCP/IP stack.
+ *
+ *
+ */
+
+/**
+ * \file
+ * Macros and definitions for the ARP module.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \addtogroup uiparp
+ * @{
+ */
+
+#ifndef UIP_ARP_H_
+#define UIP_ARP_H_
+
+#include "uip.h"
+
+
+
+/**
+ * The Ethernet header.
+ */
+struct uip_eth_hdr {
+ struct uip_eth_addr dest;
+ struct uip_eth_addr src;
+ uint16_t type;
+};
+
+#define UIP_ETHTYPE_ARP 0x0806
+#define UIP_ETHTYPE_IP 0x0800
+#define UIP_ETHTYPE_IPV6 0x86dd
+
+
+/* The uip_arp_init() function must be called before any of the other
+ ARP functions. */
+void uip_arp_init(void);
+
+/* The uip_arp_ipin() function should be called whenever an IP packet
+ arrives from the Ethernet. This function refreshes the ARP table or
+ inserts a new mapping if none exists. The function assumes that an
+ IP packet with an Ethernet header is present in the uip_buf buffer
+ and that the length of the packet is in the uip_len variable. */
+/*void uip_arp_ipin(void);*/
+#define uip_arp_ipin()
+
+/* The uip_arp_arpin() should be called when an ARP packet is received
+ by the Ethernet driver. This function also assumes that the
+ Ethernet frame is present in the uip_buf buffer. When the
+ uip_arp_arpin() function returns, the contents of the uip_buf
+ buffer should be sent out on the Ethernet if the uip_len variable
+ is > 0. */
+void uip_arp_arpin(void);
+
+/* The uip_arp_out() function should be called when an IP packet
+ should be sent out on the Ethernet. This function creates an
+ Ethernet header before the IP header in the uip_buf buffer. The
+ Ethernet header will have the correct Ethernet MAC destination
+ address filled in if an ARP table entry for the destination IP
+ address (or the IP address of the default router) is present. If no
+ such table entry is found, the IP packet is overwritten with an ARP
+ request and we rely on TCP to retransmit the packet that was
+ overwritten. In any case, the uip_len variable holds the length of
+ the Ethernet frame that should be transmitted. */
+void uip_arp_out(void);
+
+/* The uip_arp_timer() function should be called every ten seconds. It
+ is responsible for flushing old entries in the ARP table. */
+void uip_arp_timer(void);
+
+/** @} */
+
+/**
+ * \addtogroup uipconffunc
+ * @{
+ */
+
+
+/**
+ * Specifiy the Ethernet MAC address.
+ *
+ * The ARP code needs to know the MAC address of the Ethernet card in
+ * order to be able to respond to ARP queries and to generate working
+ * Ethernet headers.
+ *
+ * \note This macro only specifies the Ethernet MAC address to the ARP
+ * code. It cannot be used to change the MAC address of the Ethernet
+ * card.
+ *
+ * \param eaddr A pointer to a struct uip_eth_addr containing the
+ * Ethernet MAC address of the Ethernet card.
+ *
+ * \hideinitializer
+ */
+#define uip_setethaddr(eaddr) do {uip_lladdr.addr[0] = eaddr.addr[0]; \
+ uip_lladdr.addr[1] = eaddr.addr[1];\
+ uip_lladdr.addr[2] = eaddr.addr[2];\
+ uip_lladdr.addr[3] = eaddr.addr[3];\
+ uip_lladdr.addr[4] = eaddr.addr[4];\
+ uip_lladdr.addr[5] = eaddr.addr[5];} while(0)
+
+/** @} */
+
+
+#endif /* UIP_ARP_H_ */
+/** @} */
--- /dev/null
+/*
+ * Copyright (c) 2004, Adam Dunkels and the 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 uIP TCP/IP stack and the Contiki operating system.
+ *
+ *
+ */
+
+
+#include "uip.h"
+#include "uiplib.h"
+#include <string.h>
+
+#define DEBUG DEBUG_NONE
+
+
+/*-----------------------------------------------------------------------------------*/
+#if NETSTACK_CONF_WITH_IPV6
+int
+uiplib_ip6addrconv(const char *addrstr, uip_ip6addr_t *ipaddr)
+{
+ uint16_t value;
+ int tmp, zero;
+ unsigned int len;
+ char c = 0; //gcc warning if not initialized
+
+ value = 0;
+ zero = -1;
+ if(*addrstr == '[') addrstr++;
+
+ for(len = 0; len < sizeof(uip_ip6addr_t) - 1; addrstr++) {
+ c = *addrstr;
+ if(c == ':' || c == '\0' || c == ']' || c == '/') {
+ ipaddr->u8[len] = (value >> 8) & 0xff;
+ ipaddr->u8[len + 1] = value & 0xff;
+ len += 2;
+ value = 0;
+
+ if(c == '\0' || c == ']' || c == '/') {
+ break;
+ }
+
+ if(*(addrstr + 1) == ':') {
+ /* Zero compression */
+ if(zero < 0) {
+ zero = len;
+ }
+ addrstr++;
+ }
+ } else {
+ if(c >= '0' && c <= '9') {
+ tmp = c - '0';
+ } else if(c >= 'a' && c <= 'f') {
+ tmp = c - 'a' + 10;
+ } else if(c >= 'A' && c <= 'F') {
+ tmp = c - 'A' + 10;
+ } else {
+ PRINTF("uiplib: illegal char: '%c'\n", c);
+ return 0;
+ }
+ value = (value << 4) + (tmp & 0xf);
+ }
+ }
+ if(c != '\0' && c != ']' && c != '/') {
+ PRINTF("uiplib: too large address\n");
+ return 0;
+ }
+ if(len < sizeof(uip_ip6addr_t)) {
+ if(zero < 0) {
+ PRINTF("uiplib: too short address\n");
+ return 0;
+ }
+ memmove(&ipaddr->u8[zero + sizeof(uip_ip6addr_t) - len],
+ &ipaddr->u8[zero], len - zero);
+ memset(&ipaddr->u8[zero], 0, sizeof(uip_ip6addr_t) - len);
+ }
+
+ return 1;
+}
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+/*-----------------------------------------------------------------------------------*/
+/* Parse a IPv4-address from a string. Returns the number of characters read
+ * for the address. */
+int
+uiplib_ip4addrconv(const char *addrstr, uip_ip4addr_t *ipaddr)
+{
+ unsigned char tmp;
+ char c;
+ unsigned char i, j;
+ uint8_t charsread = 0;
+
+ tmp = 0;
+
+ for(i = 0; i < 4; ++i) {
+ j = 0;
+ do {
+ c = *addrstr;
+ ++j;
+ if(j > 4) {
+ return 0;
+ }
+ if(c == '.' || c == 0 || c == ' ') {
+ ipaddr->u8[i] = tmp;
+ tmp = 0;
+ } else if(c >= '0' && c <= '9') {
+ tmp = (tmp * 10) + (c - '0');
+ } else {
+ return 0;
+ }
+ ++addrstr;
+ ++charsread;
+ } while(c != '.' && c != 0 && c != ' ');
+
+ }
+ return charsread-1;
+}
+/*-----------------------------------------------------------------------------------*/
--- /dev/null
+/*
+ * Copyright (c) 2002, Adam Dunkels.
+ * 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 Contiki desktop environment for the C64.
+ *
+ *
+ */
+
+/**
+ * \file
+ * Various uIP library functions.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#ifndef UIPLIB_H_
+#define UIPLIB_H_
+
+#include "uip.h"
+
+/**
+ * \addtogroup uipconvfunc
+ * @{
+ */
+
+/**
+ * Convert a textual representation of an IP address to a numerical representation.
+ *
+ * This function takes a textual representation of an IP address in
+ * the form a.b.c.d for IPv4 or a:b:c:d:e:f:g:h for IPv6 and converts
+ * it into a numeric IP address representation that can be used by
+ * other uIP functions.
+ *
+ * \param addrstr A pointer to a string containing the IP address in
+ * textual form.
+ *
+ * \param addr A pointer to a uip_ip4addr_t that will be filled in with
+ * the numerical representation of the address.
+ *
+ * \retval 0 If the IP address could not be parsed.
+ * \retval Non-zero If the IP address was parsed.
+ */
+#if NETSTACK_CONF_WITH_IPV6
+#define uiplib_ipaddrconv uiplib_ip6addrconv
+#else /* NETSTACK_CONF_WITH_IPV6 */
+#define uiplib_ipaddrconv uiplib_ip4addrconv
+#endif /* NETSTACK_CONF_WITH_IPV6 */
+
+CCIF int uiplib_ip4addrconv(const char *addrstr, uip_ip4addr_t *addr);
+CCIF int uiplib_ip6addrconv(const char *addrstr, uip_ip6addr_t *addr);
+/** @} */
+
+#endif /* UIPLIB_H_ */
--- /dev/null
+/*
+ * Copyright (c) 2001-2003, Adam Dunkels.
+ * 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 uIP TCP/IP stack.
+ *
+ *
+ */
+
+/**
+ * \file
+ * Configuration options for uIP.
+ * \author Adam Dunkels <adam@dunkels.com>
+ *
+ * This file is used for tweaking various configuration options for
+ * uIP. You should make a copy of this file into one of your project's
+ * directories instead of editing this example "uipopt.h" file that
+ * comes with the uIP distribution.
+ */
+
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \defgroup uipopt Configuration options for uIP
+ * @{
+ *
+ * uIP is configured using the per-project configuration file
+ * "uipopt.h". This file contains all compile-time options for uIP and
+ * should be tweaked to match each specific project. The uIP
+ * distribution contains a documented example "uipopt.h" that can be
+ * copied and modified for each project.
+ *
+ * \note Contiki does not use the uipopt.h file to configure uIP, but
+ * uses a per-port uip-conf.h file that should be edited instead.
+ */
+
+#ifndef UIPOPT_H_
+#define UIPOPT_H_
+
+#ifndef UIP_LITTLE_ENDIAN
+#define UIP_LITTLE_ENDIAN 3412
+#endif /* UIP_LITTLE_ENDIAN */
+#ifndef UIP_BIG_ENDIAN
+#define UIP_BIG_ENDIAN 1234
+#endif /* UIP_BIG_ENDIAN */
+
+#include "fuzix-conf.h"
+
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \defgroup uipoptstaticconf Static configuration options
+ * @{
+ *
+ * These configuration options can be used for setting the IP address
+ * settings statically, but only if UIP_FIXEDADDR is set to 1. The
+ * configuration options for a specific node includes IP address,
+ * netmask and default router as well as the Ethernet address. The
+ * netmask, default router and Ethernet address are applicable only
+ * if uIP should be run over Ethernet.
+ *
+ * This options are meaningful only for the IPv4 code.
+ *
+ * All of these should be changed to suit your project.
+ */
+
+/**
+ * Determines if uIP should use a fixed IP address or not.
+ *
+ * If uIP should use a fixed IP address, the settings are set in the
+ * uipopt.h file. If not, the macros uip_sethostaddr(),
+ * uip_setdraddr() and uip_setnetmask() should be used instead.
+ *
+ * \hideinitializer
+ */
+#define UIP_FIXEDADDR 0
+
+/**
+ * Ping IP address assignment.
+ *
+ * uIP uses a "ping" packets for setting its own IP address if this
+ * option is set. If so, uIP will start with an empty IP address and
+ * the destination IP address of the first incoming "ping" (ICMP echo)
+ * packet will be used for setting the hosts IP address.
+ *
+ * \note This works only if UIP_FIXEDADDR is 0.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_PINGADDRCONF
+#define UIP_PINGADDRCONF (UIP_CONF_PINGADDRCONF)
+#else /* UIP_CONF_PINGADDRCONF */
+#define UIP_PINGADDRCONF 0
+#endif /* UIP_CONF_PINGADDRCONF */
+
+
+/**
+ * Specifies if the uIP ARP module should be compiled with a fixed
+ * Ethernet MAC address or not.
+ *
+ * If this configuration option is 0, the macro uip_setethaddr() can
+ * be used to specify the Ethernet address at run-time.
+ *
+ * \hideinitializer
+ */
+#define UIP_FIXEDETHADDR 0
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \defgroup uipoptgeneral General configuration options
+ * @{
+ */
+
+/**
+ * The link level header length.
+ *
+ * This is the offset into the uip_buf where the IP header can be
+ * found. For Ethernet, this should be set to 14. For SLIP, this
+ * should be set to 0.
+ *
+ * \note we probably won't use this constant for other link layers than
+ * ethernet as they have variable header length (this is due to variable
+ * number and type of address fields and to optional security features)
+ * E.g.: 802.15.4 -> 2 + (1/2*4/8) + 0/5/6/10/14
+ * 802.11 -> 4 + (6*3/4) + 2
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_LLH_LEN
+#define UIP_LLH_LEN (UIP_CONF_LLH_LEN)
+#else /* UIP_LLH_LEN */
+#define UIP_LLH_LEN 0
+#endif /* UIP_CONF_LLH_LEN */
+
+/**
+ * The size of the uIP packet buffer.
+ *
+ * The uIP packet buffer should not be smaller than 60 bytes, and does
+ * not need to be larger than 1514 bytes. Lower size results in lower
+ * TCP throughput, larger size results in higher TCP throughput.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_BUFFER_SIZE
+#define UIP_BUFSIZE (UIP_LINK_MTU + UIP_LLH_LEN)
+#else /* UIP_CONF_BUFFER_SIZE */
+#define UIP_BUFSIZE (UIP_CONF_BUFFER_SIZE)
+#endif /* UIP_CONF_BUFFER_SIZE */
+
+
+/**
+ * Determines if statistics support should be compiled in.
+ *
+ * The statistics is useful for debugging and to show the user.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_STATISTICS
+#define UIP_STATISTICS 0
+#else /* UIP_CONF_STATISTICS */
+#define UIP_STATISTICS (UIP_CONF_STATISTICS)
+#endif /* UIP_CONF_STATISTICS */
+
+/**
+ * Determines if logging of certain events should be compiled in.
+ *
+ * This is useful mostly for debugging. The function uip_log()
+ * must be implemented to suit the architecture of the project, if
+ * logging is turned on.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_LOGGING
+#define UIP_LOGGING 0
+#else /* UIP_CONF_LOGGING */
+#define UIP_LOGGING (UIP_CONF_LOGGING)
+#endif /* UIP_CONF_LOGGING */
+
+/**
+ * Broadcast support.
+ *
+ * This flag configures IP broadcast support. This is useful only
+ * together with UDP.
+ *
+ * \hideinitializer
+ *
+ */
+#ifndef UIP_CONF_BROADCAST
+#define UIP_BROADCAST 0
+#else /* UIP_CONF_BROADCAST */
+#define UIP_BROADCAST (UIP_CONF_BROADCAST)
+#endif /* UIP_CONF_BROADCAST */
+
+/**
+ * Print out a uIP log message.
+ *
+ * This function must be implemented by the module that uses uIP, and
+ * is called by uIP whenever a log message is generated.
+ */
+void uip_log(char *msg);
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipoptip IP configuration options
+ * @{
+ *
+ */
+/**
+ * The IP TTL (time to live) of IP packets sent by uIP.
+ *
+ * This should normally not be changed.
+ */
+#ifdef UIP_CONF_TTL
+#define UIP_TTL UIP_CONF_TTL
+#else /* UIP_CONF_TTL */
+#define UIP_TTL 64
+#endif /* UIP_CONF_TTL */
+
+/**
+ * The maximum time an IP fragment should wait in the reassembly
+ * buffer before it is dropped.
+ *
+ */
+#define UIP_REASS_MAXAGE 60 /*60s*/
+
+/**
+ * Turn on support for IP packet reassembly.
+ *
+ * uIP supports reassembly of fragmented IP packets. This features
+ * requires an additional amount of RAM to hold the reassembly buffer
+ * and the reassembly code size is approximately 700 bytes. The
+ * reassembly buffer is of the same size as the uip_buf buffer
+ * (configured by UIP_BUFSIZE).
+ *
+ * \note IP packet reassembly is not heavily tested.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_REASSEMBLY
+#define UIP_REASSEMBLY (UIP_CONF_REASSEMBLY)
+#else /* UIP_CONF_REASSEMBLY */
+#define UIP_REASSEMBLY 0
+#endif /* UIP_CONF_REASSEMBLY */
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipoptipv6 IPv6 configuration options
+ * @{
+ *
+ */
+
+/** The maximum transmission unit at the IP Layer*/
+#define UIP_LINK_MTU 1280
+
+#ifndef NETSTACK_CONF_WITH_IPV6
+/** Do we use IPv6 or not (default: no) */
+#define NETSTACK_CONF_WITH_IPV6 0
+#endif
+
+#ifndef UIP_CONF_IPV6_QUEUE_PKT
+/** Do we do per %neighbor queuing during address resolution (default: no) */
+#define UIP_CONF_IPV6_QUEUE_PKT 0
+#endif
+
+#ifndef UIP_CONF_IPV6_CHECKS
+/** Do we do IPv6 consistency checks (highly recommended, default: yes) */
+#define UIP_CONF_IPV6_CHECKS 1
+#endif
+
+#ifndef UIP_CONF_IPV6_REASSEMBLY
+/** Do we do IPv6 fragmentation (default: no) */
+#define UIP_CONF_IPV6_REASSEMBLY 0
+#endif
+
+#ifndef UIP_CONF_NETIF_MAX_ADDRESSES
+/** Default number of IPv6 addresses associated to the node's interface */
+#define UIP_CONF_NETIF_MAX_ADDRESSES 3
+#endif
+
+#ifndef UIP_CONF_DS6_PREFIX_NBU
+/** Default number of IPv6 prefixes associated to the node's interface */
+#define UIP_CONF_DS6_PREFIX_NBU 2
+#endif
+
+#ifndef UIP_CONF_DS6_DEFRT_NBU
+/** Minimum number of default routers */
+#define UIP_CONF_DS6_DEFRT_NBU 2
+#endif
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipoptudp UDP configuration options
+ * @{
+ *
+ * \note The UDP support in uIP is still not entirely complete; there
+ * is no support for sending or receiving broadcast or multicast
+ * packets, but it works well enough to support a number of vital
+ * applications such as DNS queries, though
+ */
+
+/**
+ * Toggles whether UDP support should be compiled in or not.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_UDP
+#define UIP_UDP UIP_CONF_UDP
+#else /* UIP_CONF_UDP */
+#define UIP_UDP 1
+#endif /* UIP_CONF_UDP */
+
+/**
+ * Toggles if UDP checksums should be used or not.
+ *
+ * \note Support for UDP checksums is currently not included in uIP,
+ * so this option has no function.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_UDP_CHECKSUMS
+#define UIP_UDP_CHECKSUMS (UIP_CONF_UDP_CHECKSUMS)
+#else
+#define UIP_UDP_CHECKSUMS (NETSTACK_CONF_WITH_IPV6)
+#endif
+
+/**
+ * The maximum amount of concurrent UDP connections.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_UDP_CONNS
+#define UIP_UDP_CONNS (UIP_CONF_UDP_CONNS)
+#else /* UIP_CONF_UDP_CONNS */
+#define UIP_UDP_CONNS 10
+#endif /* UIP_CONF_UDP_CONNS */
+
+/**
+ * The name of the function that should be called when UDP datagrams arrive.
+ *
+ * \hideinitializer
+ */
+
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipopttcp TCP configuration options
+ * @{
+ */
+
+/**
+ * Toggles whether TCP support should be compiled in or not.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_TCP
+#define UIP_TCP (UIP_CONF_TCP)
+#else /* UIP_CONF_TCP */
+#define UIP_TCP 1
+#endif /* UIP_CONF_TCP */
+
+/**
+ * Determines if support for opening connections from uIP should be
+ * compiled in.
+ *
+ * If the applications that are running on top of uIP for this project
+ * do not need to open outgoing TCP connections, this configuration
+ * option can be turned off to reduce the code size of uIP.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_ACTIVE_OPEN
+#define UIP_ACTIVE_OPEN 1
+#else /* UIP_CONF_ACTIVE_OPEN */
+#define UIP_ACTIVE_OPEN (UIP_CONF_ACTIVE_OPEN)
+#endif /* UIP_CONF_ACTIVE_OPEN */
+
+/**
+ * The maximum number of simultaneously open TCP connections.
+ *
+ * Since the TCP connections are statically allocated, turning this
+ * configuration knob down results in less RAM used. Each TCP
+ * connection requires approximately 30 bytes of memory.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_MAX_CONNECTIONS
+#define UIP_CONNS 10
+#else /* UIP_CONF_MAX_CONNECTIONS */
+#define UIP_CONNS (UIP_CONF_MAX_CONNECTIONS)
+#endif /* UIP_CONF_MAX_CONNECTIONS */
+
+
+/**
+ * The maximum number of simultaneously listening TCP ports.
+ *
+ * Each listening TCP port requires 2 bytes of memory.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_MAX_LISTENPORTS
+#define UIP_LISTENPORTS 20
+#else /* UIP_CONF_MAX_LISTENPORTS */
+#define UIP_LISTENPORTS (UIP_CONF_MAX_LISTENPORTS)
+#endif /* UIP_CONF_MAX_LISTENPORTS */
+
+/**
+ * Determines if support for TCP urgent data notification should be
+ * compiled in.
+ *
+ * Urgent data (out-of-band data) is a rarely used TCP feature that
+ * very seldom would be required.
+ *
+ * \hideinitializer
+ */
+#define UIP_URGDATA 0
+
+/**
+ * The initial retransmission timeout counted in timer pulses.
+ *
+ * This should not be changed.
+ */
+#define UIP_RTO 3
+
+/**
+ * The maximum number of times a segment should be retransmitted
+ * before the connection should be aborted.
+ *
+ * This should not be changed.
+ */
+#define UIP_MAXRTX 8
+
+/**
+ * The maximum number of times a SYN segment should be retransmitted
+ * before a connection request should be deemed to have been
+ * unsuccessful.
+ *
+ * This should not need to be changed.
+ */
+#define UIP_MAXSYNRTX 5
+
+/**
+ * The TCP maximum segment size.
+ *
+ * This is should not be to set to more than
+ * UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN.
+ */
+#ifdef UIP_CONF_TCP_MSS
+#if UIP_CONF_TCP_MSS > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
+#error UIP_CONF_TCP_MSS is too large for the current UIP_BUFSIZE
+#endif /* UIP_CONF_TCP_MSS > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN) */
+#define UIP_TCP_MSS (UIP_CONF_TCP_MSS)
+#else /* UIP_CONF_TCP_MSS */
+#define UIP_TCP_MSS (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
+#endif /* UIP_CONF_TCP_MSS */
+
+/**
+ * The size of the advertised receiver's window.
+ *
+ * Should be set low (i.e., to the size of the uip_buf buffer) if the
+ * application is slow to process incoming data, or high (32768 bytes)
+ * if the application processes data quickly.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_RECEIVE_WINDOW
+#define UIP_RECEIVE_WINDOW (UIP_TCP_MSS)
+#else
+#define UIP_RECEIVE_WINDOW (UIP_CONF_RECEIVE_WINDOW)
+#endif
+
+/**
+ * How long a connection should stay in the TIME_WAIT state.
+ *
+ * This can be reduced for faster entry into power saving modes.
+ */
+#ifndef UIP_CONF_WAIT_TIMEOUT
+#define UIP_TIME_WAIT_TIMEOUT 120
+#else
+#define UIP_TIME_WAIT_TIMEOUT UIP_CONF_WAIT_TIMEOUT
+#endif
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipoptarp ARP configuration options
+ * @{
+ */
+
+/**
+ * The size of the ARP table.
+ *
+ * This option should be set to a larger value if this uIP node will
+ * have many connections from the local network.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_ARPTAB_SIZE
+#define UIP_ARPTAB_SIZE (UIP_CONF_ARPTAB_SIZE)
+#else
+#define UIP_ARPTAB_SIZE 8
+#endif
+
+/**
+ * The maximum age of ARP table entries measured in 10ths of seconds.
+ *
+ * An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD
+ * default).
+ */
+#define UIP_ARP_MAXAGE 120
+
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \defgroup uipoptmac layer 2 options (for ipv6)
+ * @{
+ */
+
+#define UIP_DEFAULT_PREFIX_LEN 64
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \defgroup uipoptsics 6lowpan options (for ipv6)
+ * @{
+ */
+/**
+ * Timeout for packet reassembly at the 6lowpan layer
+ * (should be < 60s)
+ */
+#ifdef SICSLOWPAN_CONF_MAXAGE
+#define SICSLOWPAN_REASS_MAXAGE (SICSLOWPAN_CONF_MAXAGE)
+#else
+#define SICSLOWPAN_REASS_MAXAGE 20
+#endif
+
+/**
+ * Do we compress the IP header or not (default: no)
+ */
+#ifndef SICSLOWPAN_CONF_COMPRESSION
+#define SICSLOWPAN_CONF_COMPRESSION 0
+#endif
+
+/**
+ * If we use IPHC compression, how many address contexts do we support
+ */
+#ifndef SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS
+#define SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS 1
+#endif
+
+/**
+ * Do we support 6lowpan fragmentation
+ */
+#ifndef SICSLOWPAN_CONF_FRAG
+#define SICSLOWPAN_CONF_FRAG 0
+#endif
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipoptcpu CPU architecture configuration
+ * @{
+ *
+ * The CPU architecture configuration is where the endianess of the
+ * CPU on which uIP is to be run is specified. Most CPUs today are
+ * little endian, and the most notable exception are the Motorolas
+ * which are big endian. The BYTE_ORDER macro should be changed to
+ * reflect the CPU architecture on which uIP is to be run.
+ */
+
+/**
+ * The byte order of the CPU architecture on which uIP is to be run.
+ *
+ * This option can be either UIP_BIG_ENDIAN (Motorola byte order) or
+ * UIP_LITTLE_ENDIAN (Intel byte order).
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_BYTE_ORDER
+#define UIP_BYTE_ORDER (UIP_CONF_BYTE_ORDER)
+#else /* UIP_CONF_BYTE_ORDER */
+#define UIP_BYTE_ORDER (UIP_LITTLE_ENDIAN)
+#endif /* UIP_CONF_BYTE_ORDER */
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \defgroup uipoptapp Application specific configurations
+ * @{
+ *
+ * An uIP application is implemented using a single application
+ * function that is called by uIP whenever a TCP/IP event occurs. The
+ * name of this function must be registered with uIP at compile time
+ * using the UIP_APPCALL definition.
+ *
+ * uIP applications can store the application state within the
+ * uip_conn structure by specifying the type of the application
+ * structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t.
+ *
+ * The file containing the definitions must be included in the
+ * uipopt.h file.
+ *
+ * The following example illustrates how this can look.
+ \code
+
+ void httpd_appcall(void);
+ #define UIP_APPCALL httpd_appcall
+
+ struct httpd_state {
+ uint8_t state;
+ uint16_t count;
+ char *dataptr;
+ char *script;
+ };
+ typedef struct httpd_state uip_tcp_appstate_t
+ \endcode
+*/
+
+/**
+ * \var #define UIP_APPCALL
+ *
+ * The name of the application function that uIP should call in
+ * response to TCP/IP events.
+ *
+ */
+
+/**
+ * \var typedef uip_tcp_appstate_t
+ *
+ * The type of the application state that is to be stored in the
+ * uip_conn structure. This usually is typedef:ed to a struct holding
+ * application state information.
+ */
+
+/**
+ * \var typedef uip_udp_appstate_t
+ *
+ * The type of the application state that is to be stored in the
+ * uip_conn structure. This usually is typedef:ed to a struct holding
+ * application state information.
+ */
+/** @} */
+
+#endif /* UIPOPT_H_ */
+/** @} */
+/** @} */
$(CROSS_CC) $(CROSS_CCOPTS) -O0 -c -o ../bank16k.o ../bank16k.c
$(CROSS_CC) $(CROSS_CCOPTS) -O0 -c -o devtty.o devtty.c
$(CROSS_CC) $(CROSS_CCOPTS) -O0 -c -o ../timer.o ../timer.c
+ $(CROSS_CC) $(CROSS_CCOPTS) -O0 -c -o net_native.o ../dev/net/net_native.c
$(CROSS_CC) $(CROSS_CC_VIDEO) $(CROSS_CCOPTS) -O0 -c -o video.o video.c
$(CROSS_CC) $(CROSS_CC_VIDEO) $(CROSS_CCOPTS) -O0 -c -o ../usermem.o ../usermem.c
$(CROSS_LD) -o ../fuzix.bin -Map=../fuzix.map --script=fuzix.link --oformat=decb \
make -f Makefile.6809 TARGET=coco3 clean
make -f Makefile.6809 TARGET=coco3
+cd ../netd
+make -f Makefile.6809 TARGET=coco3 clean
+make -f Makefile.6809 TARGET=coco3
+
# build sh
cd ../../Applications/V7/cmd/sh
make -f Makefile.6809 TARGET=coco3 clean
#include <dwtime.h>
#include <netdev.h>
+
struct devsw dev_tab[] = /* The device driver switch table */
{
// minor open close read write ioctl
return 0;
}
-
#ifdef CONFIG_LEVEL_2
/* We always use 512 byte paths so no special pathbuf needed */
--- /dev/null
+#ifndef _DEV_NET_NET_NATIVE_H
+#define _DEV_NET_NET_NATIVE_H
+
+/* These are by socket and each one is
+
+ [RX.0][RX.1]..[RX.n][TX.0][TX.1]...[TX.n]
+
+*/
+
+#define NSOCKBUF 4 /* 4 buffers per socket */
+#define RINGSIZ (1024 * NSOCKBUF)
+
+/* The usable space will be lower once the headers are added for addressing */
+#define TXPKTSIZ 1024
+#define RXPKTSIZ 1024
+
+#define SOCKBUFOFF (2 * RINGSIZ)
+#define RXBUFOFF RINGSIZ
+
+/* Total size is thus 8K * sockets - typically 64K for the file */
+
+
+struct sockdata {
+ void *socket;
+ uint8_t err;
+ uint8_t ret;
+ uint8_t event; /* Waiting events to go to user space */
+#define NEV_STATE 1
+#define NEV_READ 2
+#define NEV_WRITE 4
+#define NEV_MASK 7
+#define NEVW_STATE 128
+ uint8_t newstate; /* Requested new state */
+ uint8_t lcn; /* Logical channel */
+ uint16_t rlen[NSOCKBUF]; /* TCP uses 0 as total space */
+ uint16_t rbuf;
+ uint16_t rnext;
+ uint16_t tlen[NSOCKBUF]; /* Not used by TCP */
+ uint16_t tbuf; /* Next transmit buffer (pointer for tcp) */
+ uint16_t tnext; /* Buffers of room (bytes if TCP) */
+};
+
+struct sockmsg {
+ struct socket s;
+ struct sockdata sd;
+};
+
+#define NE_NEWSTATE 1
+#define NE_EVENT 2
+#define NE_SETADDR 3
+#define NE_INIT 4
+#define NE_ROOM 5
+#define NE_DATA 6
+#define NE_SHUTR 7
+
+struct netevent {
+ uint8_t socket;
+ uint8_t event;
+ uint8_t ret;
+ uint16_t data;
+ union {
+ uint16_t rlen[NSOCKBUF];
+ struct sockaddrs addr;
+ } info;
+};
+
+#define NET_INIT 0x4401
+
+int netdev_write(void);
+int netdev_read(uint8_t flag);
+int netdev_ioctl(uint16_t request, char *data);
+int netdev_close(void);
+
+
+#endif
public / FUZIX.git / commitdiff