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openwrt/package/uboot-lantiq/patches/200-httpd.patch
John Crispin 97140cecea * reorder patches 
SVN-Revision: 25370
2011-02-05 15:23:08 +00:00

6167 lines
191 KiB
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--- a/common/cmd_net.c
+++ b/common/cmd_net.c
@@ -43,6 +43,18 @@ U_BOOT_CMD(
"[loadAddress] [[hostIPaddr:]bootfilename]"
);
+#if defined(CONFIG_CMD_HTTPD)
+int do_httpd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ return NetLoopHttpd();
+}
+
+U_BOOT_CMD(
+ httpd, 1, 1, do_httpd,
+ "httpd\t- start webserver", ""
+);
+#endif
+
int do_tftpb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
return netboot_common (TFTP, cmdtp, argc, argv);
--- /dev/null
+++ b/include/httpd.h
@@ -0,0 +1,17 @@
+#ifndef _UIP_HTTPD_H__
+#define _UIP_HTTPD_H__
+
+void HttpdStart (void);
+void HttpdHandler (void);
+
+/* board specific implementation */
+extern int do_http_upgrade(const unsigned char *data, const ulong size);
+
+#define HTTP_PROGRESS_START 0
+#define HTTP_PROGRESS_TIMEOUT 1
+#define HTTP_PROGRESS_UPLOAD_READY 2
+#define HTTP_PROGRESS_UGRADE_READY 3
+#define HTTP_PROGRESS_UGRADE_FAILED 4
+extern int do_http_progress(const int state);
+
+#endif
--- a/include/net.h
+++ b/include/net.h
@@ -383,7 +383,8 @@ extern int NetTimeOffset; /* offset ti
/* Initialize the network adapter */
extern int NetLoop(proto_t);
-
+extern int NetLoopHttpd(void);
+extern void NetSendHttpd(void);
/* Shutdown adapters and cleanup */
extern void NetStop(void);
--- a/net/Makefile
+++ b/net/Makefile
@@ -26,6 +26,8 @@ include $(TOPDIR)/config.mk
# CFLAGS += -DDEBUG
LIB = $(obj)libnet.a
+UIPDIR = uip-0.9
+$(shell mkdir -p $(obj)$(UIPDIR))
COBJS-$(CONFIG_CMD_NET) += bootp.o
COBJS-$(CONFIG_CMD_DNS) += dns.o
@@ -36,6 +40,8 @@ COBJS-$(CONFIG_CMD_NET) += rarp.o
COBJS-$(CONFIG_CMD_SNTP) += sntp.o
COBJS-$(CONFIG_CMD_NET) += tftp.o
+COBJS-$(CONFIG_CMD_HTTPD) += httpd.o $(UIPDIR)/fs.o $(UIPDIR)/httpd.o $(UIPDIR)/uip_arp.o $(UIPDIR)/uip_arch.o $(UIPDIR)/uip.o
+
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
--- /dev/null
+++ b/net/httpd.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright 1994, 1995, 2000 Neil Russell.
+ * (See License)
+ * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
+ */
+
+#include <common.h>
+#include <command.h>
+#include <net.h>
+#include "uip-0.9/uipopt.h"
+#include "uip-0.9/uip.h"
+#include "uip-0.9/uip_arp.h"
+
+
+#if defined(CONFIG_CMD_HTTPD)
+
+#define TIMEOUT 5
+
+static int arptimer = 0;
+
+void
+HttpdHandler (void)
+{
+ int i;
+ for(i = 0; i < UIP_CONNS; i++) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ NetSendHttpd();
+ }
+ }
+ if(++arptimer == 20) {
+ uip_arp_timer();
+ arptimer = 0;
+ }
+}
+
+static void
+HttpdTimeout (void)
+{
+ puts ("T ");
+ NetSetTimeout (TIMEOUT * 1000, HttpdTimeout);
+}
+
+void
+HttpdStart (void)
+{
+ uip_init();
+ httpd_init();
+}
+
+#endif
--- a/net/net.c
+++ b/net/net.c
@@ -95,6 +95,19 @@
#if defined(CONFIG_CMD_DNS)
#include "dns.h"
#endif
+#if defined(CONFIG_CMD_HTTPD)
+#include "httpd.h"
+#include "uip-0.9/uipopt.h"
+#include "uip-0.9/uip.h"
+#include "uip-0.9/uip_arp.h"
+static int https_running = 0;
+int httpd_upload_complete = 0;
+unsigned char *httpd_upload_data = 0;
+extern int upload_running;
+void NetReceiveHttpd(volatile uchar * inpkt, int len);
+void NetSendHttpd(void);
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -1308,6 +1321,13 @@ NetReceive(volatile uchar * inpkt, int l
debug("packet received\n");
+#if defined(CONFIG_CMD_HTTPD)
+ if(https_running) {
+ NetReceiveHttpd(inpkt, len);
+ return;
+ }
+#endif
+
NetRxPacket = inpkt;
NetRxPacketLen = len;
et = (Ethernet_t *)inpkt;
@@ -1922,3 +1942,162 @@ ushort getenv_VLAN(char *var)
{
return (string_to_VLAN(getenv(var)));
}
+
+#if defined(CONFIG_CMD_HTTPD)
+
+void
+NetSendHttpd(void)
+{
+ volatile uchar *tmpbuf = NetTxPacket;
+ int i;
+
+ for(i = 0; i < 40 + UIP_LLH_LEN; i++) {
+ tmpbuf[i] = uip_buf[i];
+ }
+
+ for(; i < uip_len; i++) {
+ tmpbuf[i] = uip_appdata[i - 40 - UIP_LLH_LEN];
+ }
+ eth_send(NetTxPacket, uip_len);
+}
+
+#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+
+void
+NetReceiveHttpd(volatile uchar * inpkt, int len)
+{
+ memcpy(uip_buf, inpkt, len);
+ uip_len = len;
+ if(BUF->type == htons(UIP_ETHTYPE_IP)) {
+ uip_arp_ipin();
+ uip_input();
+ if(uip_len > 0) {
+ uip_arp_out();
+ NetSendHttpd();
+ }
+ } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
+ uip_arp_arpin();
+ if(uip_len > 0) {
+ NetSendHttpd();
+ }
+ }
+}
+
+int
+NetLoopHttpd(void)
+{
+ unsigned long long tout = 0;
+ bd_t *bd = gd->bd;
+ unsigned short int ip[2];
+
+#ifdef CONFIG_NET_MULTI
+ NetRestarted = 0;
+ NetDevExists = 0;
+#endif
+
+ /* XXX problem with bss workaround */
+ NetArpWaitPacketMAC = NULL;
+ NetArpWaitTxPacket = NULL;
+ NetArpWaitPacketIP = 0;
+ NetArpWaitReplyIP = 0;
+ NetArpWaitTxPacket = NULL;
+ NetTxPacket = NULL;
+ NetTryCount = 1;
+
+ if (!NetTxPacket) {
+ int i;
+ /*
+ * Setup packet buffers, aligned correctly.
+ */
+ NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
+ NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
+ for (i = 0; i < PKTBUFSRX; i++) {
+ NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN;
+ }
+ }
+
+ if (!NetArpWaitTxPacket) {
+ NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1);
+ NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN;
+ NetArpWaitTxPacketSize = 0;
+ }
+
+restart:
+
+ eth_halt();
+#ifdef CONFIG_NET_MULTI
+ eth_set_current();
+#endif
+ if (eth_init(bd) < 0) {
+ eth_halt();
+ return(-1);
+ }
+
+#ifdef CONFIG_NET_MULTI
+ memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
+#else
+ eth_getenv_enetaddr("ethaddr", NetOurEther);
+#endif
+
+ NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
+ NetOurGatewayIP = getenv_IPaddr ("gatewayip");
+ NetOurSubnetMask= getenv_IPaddr ("netmask");
+ NetOurVLAN = getenv_VLAN("vlan");
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
+
+ printf("starting httpd server from server %ld.%ld.%ld.%ld\n",
+ (bd->bi_ip_addr & 0xff000000) >> 24,
+ (bd->bi_ip_addr & 0x00ff0000) >> 16,
+ (bd->bi_ip_addr & 0x0000ff00) >> 8,
+ (bd->bi_ip_addr & 0x000000ff));
+
+ HttpdStart();
+
+ ip[0] = ((bd->bi_ip_addr & 0xffff0000) >> 16);
+ ip[1] = (bd->bi_ip_addr & 0x0000ffff);
+ uip_sethostaddr(ip);
+
+ do_http_progress(HTTP_PROGRESS_START);
+
+ https_running = 1;
+ for (;;) {
+ unsigned long long t1;
+ WATCHDOG_RESET();
+ if(eth_rx() > 0) {
+ HttpdHandler();
+ } else {
+ t1 = get_ticks();
+ if(t1 - tout > 1000) {
+ do_http_progress(HTTP_PROGRESS_TIMEOUT);
+ tout = t1;
+ }
+ }
+ if(!httpd_upload_complete)
+ continue;
+ printf("Bytes transferred = %ld (%lx hex)\n",
+ NetBootFileXferSize,
+ NetBootFileXferSize);
+ eth_halt();
+ do_http_progress(HTTP_PROGRESS_UPLOAD_READY);
+ if(do_http_upgrade(&httpd_upload_data[0], NetBootFileXferSize) == 0) {
+ do_http_progress(HTTP_PROGRESS_UGRADE_READY);
+ udelay(1000 * 10);
+ do_reset (0,0,0,0);
+ return 0;
+ }
+ break;
+ }
+ https_running = 0;
+ NetBootFileXferSize = 0;
+ httpd_upload_complete = 0;
+ upload_running = 0;
+// free(httpd_upload_data);
+
+ do_http_progress(HTTP_PROGRESS_UGRADE_FAILED);
+
+ goto restart;
+
+ return -1;
+}
+
+#endif
--- /dev/null
+++ b/net/uip-0.9/Makefile
@@ -0,0 +1,54 @@
+# 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. All advertising materials mentioning features or use of this software
+# must display the following acknowledgement:
+# This product includes software developed by Adam Dunkels.
+# 4. 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.
+#
+# $Id: Makefile,v 1.8.2.2 2003/10/04 22:54:17 adam Exp $
+#
+
+CC=gcc
+CFLAGS=-Wall -fpack-struct -DDUMP=0
+
+all: uip
+
+uip: uip.o uip_arch.o tapdev.o httpd.o main.o fs.o uip_arp.o
+ $(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
+
+%.o: %.c
+ $(CC) $(CFLAGS) -c $^ -o $@
+
+clean:
+ rm -f *.o *~ *core uip
+
+
+
+
+
+
--- /dev/null
+++ b/net/uip-0.9/fs.c
@@ -0,0 +1,154 @@
+/**
+ * \addtogroup httpd
+ * @{
+ */
+
+/**
+ * \file
+ * HTTP server read-only file system code.
+ * \author Adam Dunkels <adam@dunkels.com>
+ *
+ * A simple read-only filesystem.
+ */
+
+/*
+ * Copyright (c) 2001, 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 lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: fs.c,v 1.7.2.3 2003/10/07 13:22:27 adam Exp $
+ */
+
+#include "uip.h"
+#include "httpd.h"
+#include "fs.h"
+#include "fsdata.h"
+
+#include "fsdata.c"
+
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+static u16_t count[FS_NUMFILES];
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+
+/*-----------------------------------------------------------------------------------*/
+static u8_t
+fs_strcmp(const char *str1, const char *str2)
+{
+ u8_t i;
+ i = 0;
+ loop:
+
+ if(str2[i] == 0 ||
+ str1[i] == '\r' ||
+ str1[i] == '\n') {
+ return 0;
+ }
+
+ if(str1[i] != str2[i]) {
+ return 1;
+ }
+
+
+ ++i;
+ goto loop;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+fs_open(const char *name, struct fs_file *file)
+{
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+ u16_t i = 0;
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+ struct fsdata_file_noconst *f;
+
+ for(f = (struct fsdata_file_noconst *)FS_ROOT;
+ f != NULL;
+ f = (struct fsdata_file_noconst *)f->next) {
+
+ if(fs_strcmp(name, f->name) == 0) {
+ file->data = f->data;
+ file->len = f->len;
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+ ++count[i];
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+ return 1;
+ }
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+ ++i;
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+
+ }
+ return 0;
+}
+/*-----------------------------------------------------------------------------------*/
+void
+fs_init(void)
+{
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+ u16_t i;
+ for(i = 0; i < FS_NUMFILES; i++) {
+ count[i] = 0;
+ }
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+}
+/*-----------------------------------------------------------------------------------*/
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+u16_t fs_count
+(char *name)
+{
+ struct fsdata_file_noconst *f;
+ u16_t i;
+
+ i = 0;
+ for(f = (struct fsdata_file_noconst *)FS_ROOT;
+ f != NULL;
+ f = (struct fsdata_file_noconst *)f->next) {
+
+ if(fs_strcmp(name, f->name) == 0) {
+ return count[i];
+ }
+ ++i;
+ }
+ return 0;
+}
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+/*-----------------------------------------------------------------------------------*/
--- /dev/null
+++ b/net/uip-0.9/fs.h
@@ -0,0 +1,80 @@
+/**
+ * \addtogroup httpd
+ * @{
+ */
+
+/**
+ * \file
+ * HTTP server read-only file system header file.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/*
+ * Copyright (c) 2001, 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 lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: fs.h,v 1.6.2.3 2003/10/07 13:22:27 adam Exp $
+ */
+#ifndef __FS_H__
+#define __FS_H__
+
+#include "uip.h"
+
+/**
+ * An open file in the read-only file system.
+ */
+struct fs_file {
+ char *data; /**< The actual file data. */
+ int len; /**< The length of the file data. */
+};
+
+/**
+ * Open a file in the read-only file system.
+ *
+ * \param name The name of the file.
+ *
+ * \param file The file pointer, which must be allocated by caller and
+ * will be filled in by the function.
+ */
+int fs_open(const char *name, struct fs_file *file);
+
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+u16_t fs_count(char *name);
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+
+/**
+ * Initialize the read-only file system.
+ */
+void fs_init(void);
+
+#endif /* __FS_H__ */
--- /dev/null
+++ b/net/uip-0.9/fsdata.c
@@ -0,0 +1,199 @@
+static const char data_flashing_html[] = {
+ /* /flashing.html */
+ 0x2f, 0x66, 0x6c, 0x61, 0x73, 0x68, 0x69, 0x6e, 0x67, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0,
+ 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x32,
+ 0x30, 0x30, 0x20, 0x4f, 0x4b, 0xd, 0xa, 0x53, 0x65, 0x72,
+ 0x76, 0x65, 0x72, 0x3a, 0x20, 0x75, 0x49, 0x50, 0x2f, 0x30,
+ 0x2e, 0x39, 0x20, 0x28, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f,
+ 0x2f, 0x64, 0x75, 0x6e, 0x6b, 0x65, 0x6c, 0x73, 0x2e, 0x63,
+ 0x6f, 0x6d, 0x2f, 0x61, 0x64, 0x61, 0x6d, 0x2f, 0x75, 0x69,
+ 0x70, 0x2f, 0x29, 0xd, 0xa, 0x43, 0x6f, 0x6e, 0x74, 0x65,
+ 0x6e, 0x74, 0x2d, 0x74, 0x79, 0x70, 0x65, 0x3a, 0x20, 0x74,
+ 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0xd, 0xa,
+ 0xd, 0xa, 0x3c, 0x68, 0x74, 0x6d, 0x6c, 0x3e, 0x3c, 0x62,
+ 0x6f, 0x64, 0x79, 0x20, 0x73, 0x74, 0x79, 0x6c, 0x65, 0x3d,
+ 0x22, 0x6d, 0x61, 0x72, 0x67, 0x69, 0x6e, 0x3a, 0x20, 0x30,
+ 0x70, 0x74, 0x20, 0x61, 0x75, 0x74, 0x6f, 0x3b, 0x20, 0x68,
+ 0x65, 0x69, 0x67, 0x68, 0x74, 0x3a, 0x31, 0x30, 0x30, 0x25,
+ 0x3b, 0x20, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x3a, 0x20, 0x23,
+ 0x66, 0x66, 0x66, 0x3b, 0x20, 0x62, 0x61, 0x63, 0x6b, 0x67,
+ 0x72, 0x6f, 0x75, 0x6e, 0x64, 0x2d, 0x63, 0x6f, 0x6c, 0x6f,
+ 0x72, 0x3a, 0x20, 0x23, 0x66, 0x62, 0x62, 0x30, 0x33, 0x34,
+ 0x3b, 0x22, 0x3e, 0x3c, 0x63, 0x65, 0x6e, 0x74, 0x65, 0x72,
+ 0x3e, 0x3c, 0x68, 0x31, 0x3e, 0x55, 0x70, 0x67, 0x72, 0x61,
+ 0x64, 0x69, 0x6e, 0x67, 0x20, 0x73, 0x79, 0x73, 0x74, 0x65,
+ 0x6d, 0x20, 0x2e, 0x2e, 0x2e, 0x2e, 0x3c, 0x2f, 0x68, 0x31,
+ 0x3e, 0x3c, 0x2f, 0x63, 0x65, 0x6e, 0x74, 0x65, 0x72, 0x3e,
+ 0x3c, 0x2f, 0x62, 0x6f, 0x64, 0x79, 0x3e, 0x3c, 0x2f, 0x68,
+ 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
+
+static const char data_fail_html[] = {
+ /* /fail.html */
+ 0x2f, 0x66, 0x61, 0x69, 0x6c, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0,
+ 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x32,
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+ 0x76, 0x65, 0x72, 0x3a, 0x20, 0x75, 0x49, 0x50, 0x2f, 0x30,
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+ 0x64, 0x79, 0x3e, 0xa, 0x3c, 0x2f, 0x68, 0x74, 0x6d, 0x6c,
+ 0x3e, 0xa, };
+
+static const char data_404_html[] = {
+ /* /404.html */
+ 0x2f, 0x34, 0x30, 0x34, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0,
+ 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x34,
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+ 0x62, 0x6f, 0x64, 0x79, 0x3e, 0x3c, 0x2f, 0x68, 0x74, 0x6d,
+ 0x6c, 0x3e, };
+
+static const char data_index_html[] = {
+ /* /index.html */
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+ 0xa, 0x9, 0x9, 0x3c, 0x2f, 0x66, 0x6f, 0x72, 0x6d, 0x3e,
+ 0xa, 0x9, 0x3c, 0x2f, 0x62, 0x6f, 0x64, 0x79, 0x3e, 0xa,
+ 0x3c, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
+
+static const char data_flash_html[] = {
+ /* /flash.html */
+ 0x2f, 0x66, 0x6c, 0x61, 0x73, 0x68, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0,
+ 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, 0x20, 0x32,
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+ 0x65, 0x20, 0x6c, 0x65, 0x64, 0x73, 0x20, 0x77, 0x69, 0x6c,
+ 0x6c, 0x20, 0x73, 0x74, 0x61, 0x72, 0x74, 0x20, 0x74, 0x6f,
+ 0x20, 0x62, 0x6c, 0x69, 0x6e, 0x6b, 0x2e, 0xa, 0xa, 0x9,
+ 0x9, 0x41, 0x66, 0x74, 0x65, 0x72, 0x20, 0x61, 0x20, 0x73,
+ 0x75, 0x63, 0x63, 0x65, 0x73, 0x73, 0x66, 0x75, 0x6c, 0x6c,
+ 0x20, 0x75, 0x70, 0x64, 0x61, 0x74, 0x65, 0x20, 0x74, 0x68,
+ 0x65, 0x20, 0x62, 0x6f, 0x78, 0x20, 0x77, 0x69, 0x6c, 0x6c,
+ 0x20, 0x72, 0x65, 0x62, 0x6f, 0x6f, 0x74, 0xa, 0x9, 0x3c,
+ 0x2f, 0x62, 0x6f, 0x64, 0x79, 0x3e, 0xa, 0x3c, 0x2f, 0x68,
+ 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
+
+const struct fsdata_file file_flashing_html[] = {{NULL, data_flashing_html, data_flashing_html + 15, sizeof(data_flashing_html) - 15}};
+
+const struct fsdata_file file_fail_html[] = {{file_flashing_html, data_fail_html, data_fail_html + 11, sizeof(data_fail_html) - 11}};
+
+const struct fsdata_file file_404_html[] = {{file_fail_html, data_404_html, data_404_html + 10, sizeof(data_404_html) - 10}};
+
+const struct fsdata_file file_index_html[] = {{file_404_html, data_index_html, data_index_html + 12, sizeof(data_index_html) - 12}};
+
+const struct fsdata_file file_flash_html[] = {{file_index_html, data_flash_html, data_flash_html + 12, sizeof(data_flash_html) - 12}};
+
+#define FS_ROOT file_flash_html
+
+#define FS_NUMFILES 5
\ No newline at end of file
--- /dev/null
+++ b/net/uip-0.9/fsdata.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2001, 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 lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: fsdata.h,v 1.4.2.1 2003/10/04 22:54:06 adam Exp $
+ */
+#ifndef __FSDATA_H__
+#define __FSDATA_H__
+
+#include "uipopt.h"
+
+struct fsdata_file {
+ const struct fsdata_file *next;
+ const char *name;
+ const char *data;
+ const int len;
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+ u16_t count;
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+};
+
+struct fsdata_file_noconst {
+ struct fsdata_file *next;
+ char *name;
+ char *data;
+ int len;
+#ifdef FS_STATISTICS
+#if FS_STATISTICS == 1
+ u16_t count;
+#endif /* FS_STATISTICS */
+#endif /* FS_STATISTICS */
+};
+
+#endif /* __FSDATA_H__ */
--- /dev/null
+++ b/net/uip-0.9/httpd.c
@@ -0,0 +1,278 @@
+#include "uip.h"
+#include "httpd.h"
+#include "fs.h"
+#include "fsdata.h"
+#include <asm/addrspace.h>
+
+#define HTTP_NONE 0
+#define HTTP_FILE 1
+#define HTTP_FIRMWARE 2
+
+#define PRINT(x) printf("%s", x)
+#define PRINTLN(x) printf("%s\n", x)
+
+extern unsigned long do_http_tmp_address(void);
+
+struct httpd_state *hs;
+
+extern const struct fsdata_file file_index_html;
+extern const struct fsdata_file file_404_html;
+extern const struct fsdata_file file_flash_html;
+extern int httpd_upload_complete;
+extern unsigned char *httpd_upload_data;
+unsigned char *upload_data;
+extern ulong NetBootFileXferSize;
+int upload_running = 0;
+
+#define ISO_G 0x47
+#define ISO_E 0x45
+#define ISO_T 0x54
+#define ISO_P 0x50
+#define ISO_O 0x4f
+#define ISO_S 0x53
+#define ISO_T 0x54
+#define ISO_slash 0x2f
+#define ISO_c 0x63
+#define ISO_g 0x67
+#define ISO_i 0x69
+#define ISO_space 0x20
+#define ISO_nl 0x0a
+#define ISO_cr 0x0d
+#define ISO_a 0x61
+#define ISO_t 0x74
+#define ISO_hash 0x23
+#define ISO_period 0x2e
+
+static char eol[3] = { 0x0d, 0x0a, 0x00 };
+static char eol2[5] = { 0x0d, 0x0a, 0x0d, 0x0a, 0x00 };
+static char boundary[128];
+static int boundary_len = 0;
+
+/* we use this so that we can do without the ctype library */
+#define is_digit(c) ((c) >= '0' && (c) <= '9')
+static int atoi(const char *s)
+{
+ int i=0;
+
+ while (is_digit(*s))
+ i = i*10 + *(s++) - '0';
+ return i;
+}
+
+void
+httpd_init(void)
+{
+ fs_init();
+ uip_listen(HTONS(80));
+}
+
+void
+httpd_appcall(void)
+{
+ struct fs_file fsfile;
+ u8_t i;
+ switch(uip_conn->lport) {
+ case HTONS(80):
+ hs = (struct httpd_state *)(uip_conn->appstate);
+ if(uip_connected())
+ {
+ hs->state = HTTP_NONE;
+ hs->count = 0;
+ return;
+ } else if(uip_poll())
+ {
+ if(hs->count++ >= 1000) {
+ uip_abort();
+ }
+ return;
+ } else if(uip_newdata() && hs->state == HTTP_NONE)
+ {
+ if(uip_appdata[0] == ISO_G &&
+ uip_appdata[1] == ISO_E &&
+ uip_appdata[2] == ISO_T &&
+ uip_appdata[3] == ISO_space)
+ {
+ hs->state = HTTP_FILE;
+ }
+ if(uip_appdata[0] == ISO_P &&
+ uip_appdata[1] == ISO_O &&
+ uip_appdata[2] == ISO_S &&
+ uip_appdata[3] == ISO_T &&
+ uip_appdata[4] == ISO_space)
+ {
+ hs->state = HTTP_FIRMWARE;
+ }
+ if(hs->state == HTTP_NONE)
+ {
+ uip_abort();
+ return;
+ }
+ if(hs->state == HTTP_FILE)
+ {
+ for(i = 4; i < 40; ++i)
+ {
+ if(uip_appdata[i] == ISO_space ||
+ uip_appdata[i] == ISO_cr ||
+ uip_appdata[i] == ISO_nl)
+ {
+ uip_appdata[i] = 0;
+ break;
+ }
+ }
+
+ PRINT("request for file ");
+ PRINTLN(&uip_appdata[4]);
+ if(uip_appdata[4] == ISO_slash &&
+ uip_appdata[5] == 0)
+ {
+ fs_open(file_index_html.name, &fsfile);
+ } else {
+ if(!fs_open((const char *)&uip_appdata[4], &fsfile))
+ {
+ PRINTLN("couldn't open file");
+ fs_open(file_index_html.name, &fsfile);
+ }
+ }
+ hs->script = 0;
+ hs->state = HTTP_FILE;
+ hs->dataptr = fsfile.data;
+ hs->count = fsfile.len;
+ }
+ if(hs->state == HTTP_FIRMWARE)
+ {
+ unsigned char *start = (unsigned char*)uip_appdata;
+ char *clen = strstr(start, "Content-Length:");
+ int len = 0;
+ unsigned char *next, *end;
+ unsigned char *boundary_start;
+ int i;
+ uip_appdata[uip_len] = '\0';
+ if(clen)
+ {
+ clen += sizeof("Content-Length:");
+ next = strstr(clen, eol);
+ if(next)
+ {
+ len = atoi(clen);
+ next++;
+ printf("expecting %d bytes\n", len);
+ upload_data = httpd_upload_data = (unsigned char *)do_http_tmp_address();
+ printf("received data will be stored at 0x%08X\n", upload_data);
+ if(!upload_data)
+ {
+ printf("failed to allocate memory\n");
+ uip_close();
+ return;
+ }
+ } else {
+ uip_close();
+ return;
+ }
+ }
+ if(len < 4 * 1024)
+ {
+ uip_close();
+ return;
+ }
+ boundary_start = strstr(next, "---");
+ if(!boundary_start)
+ {
+ uip_close();
+ return;
+ }
+ end = strstr(boundary_start, eol);
+ if(!eol)
+ {
+ uip_close();
+ return;
+ }
+ boundary_len = end - boundary_start;
+ memcpy(boundary, boundary_start, boundary_len);
+ boundary[boundary_len] = 0;
+ next = strstr(boundary_start, "name=\"firmware\";");
+ if(!next)
+ {
+ uip_close();
+ return;
+ }
+ next = strstr(next, eol2);
+ if(!next)
+ {
+ printf("could not find start of data\n");
+ uip_close();
+ return;
+ }
+ next += 4;
+ hs->script = 0;
+ hs->state = HTTP_FIRMWARE;
+ hs->upload = uip_len - (next - start);
+ hs->upload_total = len - (int)(next - boundary_start);
+ hs->upload_total -= (strlen(boundary) + 6);
+ //printf("storing %d bytes at %p\n", (int)hs->upload, upload_data);
+ for(i = 0; i < hs->upload; i++)
+ upload_data[i] = next[i];
+ upload_data += (int)hs->upload;
+ printf("%d / %d\n", (int)hs->upload, hs->upload_total);
+ uip_slen = 0;
+ return;
+ }
+ }
+
+ if(hs->state == HTTP_FIRMWARE)
+ {
+ if(uip_newdata())
+ {
+ int i;
+ hs->count = 0;
+ uip_appdata[uip_len] = '\0';
+ hs->upload += uip_len;
+ //printf("storing %d bytes at %p\n", uip_len, upload_data);
+ printf("%d / %d\n", (int)hs->upload, hs->upload_total);
+ for(i = 0; i < uip_len; i++)
+ upload_data[i] = uip_appdata[i];
+ upload_data += uip_len;
+ uip_slen = 0;
+ if(hs->upload >= hs->upload_total)
+ {
+ upload_running = 1;
+ NetBootFileXferSize = hs->upload_total;
+ fs_open(file_flash_html.name, &fsfile);
+ hs->script = 0;
+ hs->state = HTTP_FILE;
+ hs->dataptr = fsfile.data;
+ hs->count = fsfile.len;
+ }
+ }
+ }
+ if(hs->state == HTTP_FILE)
+ {
+ if(uip_acked())
+ {
+ if(hs->count >= uip_conn->len)
+ {
+ hs->count -= uip_conn->len;
+ hs->dataptr += uip_conn->len;
+ } else {
+ hs->count = 0;
+ }
+ if(hs->count == 0)
+ {
+ if(upload_running)
+ {
+ int i;
+ httpd_upload_complete = 1;
+ // for(i = 0; i < hs->upload_total; i++)
+ // printf("%c", httpd_upload_data[i]);
+ }
+ uip_close();
+ }
+ }
+ uip_send(hs->dataptr, hs->count);
+ }
+ break;
+
+ default:
+ uip_abort();
+ break;
+ }
+}
--- /dev/null
+++ b/net/uip-0.9/httpd.h
@@ -0,0 +1,83 @@
+/**
+ * \addtogroup httpd
+ * @{
+ */
+
+/**
+ * \file
+ * HTTP server header file.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/*
+ * 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.
+ *
+ * $Id: httpd.h,v 1.4.2.3 2003/10/06 22:56:44 adam Exp $
+ *
+ */
+
+#ifndef __HTTPD_H__
+#define __HTTPD_H__
+
+void httpd_init(void);
+void httpd_appcall(void);
+
+/* UIP_APPCALL: the name of the application function. This function
+ must return void and take no arguments (i.e., C type "void
+ appfunc(void)"). */
+#ifndef UIP_APPCALL
+#define UIP_APPCALL httpd_appcall
+#endif
+
+struct httpd_state {
+ u8_t state;
+ u16_t count;
+ char *dataptr;
+ char *script;
+ unsigned int upload;
+ unsigned int upload_total;
+};
+
+
+/* UIP_APPSTATE_SIZE: The size of the application-specific state
+ stored in the uip_conn structure. */
+#ifndef UIP_APPSTATE_SIZE
+#define UIP_APPSTATE_SIZE (sizeof(struct httpd_state))
+#endif
+
+#define FS_STATISTICS 1
+
+extern struct httpd_state *hs;
+
+
+/* we copy the data to RAM+10MB */
+#define TMP_DATA 0x8A100000
+
+#endif /* __HTTPD_H__ */
--- /dev/null
+++ b/net/uip-0.9/main.c
@@ -0,0 +1,88 @@
+/*
+ * 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.
+ *
+ * $Id: main.c,v 1.10.2.1 2003/10/04 22:54:17 adam Exp $
+ *
+ */
+
+
+#include "uip.h"
+#include "uip_arp.h"
+#include "tapdev.h"
+#include "httpd.h"
+
+#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+
+#ifndef NULL
+#define NULL (void *)0
+#endif /* NULL */
+
+/*-----------------------------------------------------------------------------------*/
+int
+main(void)
+{
+ u8_t i, arptimer;
+ tapdev_init();
+ uip_init();
+ httpd_init();
+ arptimer = 0;
+ while(1) {
+ uip_len = tapdev_read();
+ if(uip_len == 0) {
+ for(i = 0; i < UIP_CONNS; i++) {
+ uip_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ tapdev_send();
+ }
+ }
+
+ if(++arptimer == 20) {
+ uip_arp_timer();
+ arptimer = 0;
+ }
+ } else {
+ if(BUF->type == htons(UIP_ETHTYPE_IP)) {
+ uip_arp_ipin();
+ uip_input();
+ if(uip_len > 0) {
+ uip_arp_out();
+ tapdev_send();
+ }
+ } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
+ uip_arp_arpin();
+ if(uip_len > 0) {
+ tapdev_send();
+ }
+ }
+ }
+ }
+ return 0;
+}
--- /dev/null
+++ b/net/uip-0.9/tapdev.c
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2001, 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.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: tapdev.c,v 1.7.2.1 2003/10/07 13:23:19 adam Exp $
+ */
+
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/socket.h>
+
+#ifdef linux
+#include <sys/ioctl.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>
+#define DEVTAP "/dev/net/tun"
+#else /* linux */
+#define DEVTAP "/dev/tap0"
+#endif /* linux */
+
+#include "uip.h"
+
+static int fd;
+
+static unsigned long lasttime;
+static struct timezone tz;
+
+/*-----------------------------------------------------------------------------------*/
+void
+tapdev_init(void)
+{
+ char buf[1024];
+
+ fd = open(DEVTAP, O_RDWR);
+ if(fd == -1) {
+ perror("tapdev: tapdev_init: open");
+ exit(1);
+ }
+
+#ifdef linux
+ {
+ struct ifreq ifr;
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_flags = IFF_TAP|IFF_NO_PI;
+ if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0) {
+ perror(buf);
+ exit(1);
+ }
+ }
+#endif /* Linux */
+
+ snprintf(buf, sizeof(buf), "ifconfig tap0 inet %d.%d.%d.%d",
+ UIP_DRIPADDR0, UIP_DRIPADDR1, UIP_DRIPADDR2, UIP_DRIPADDR3);
+ system(buf);
+
+ lasttime = 0;
+}
+
+void dump_mem(int type, int len)
+{
+#if DUMP == 1
+ int i;
+ for(i = 0; i < len; i++)
+ printf("%c", uip_buf[i]);
+ if(type)
+ {
+ printf("\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01");
+ printf("\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01");
+ } else {
+ printf("\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02");
+ printf("\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02");
+ }
+ fflush(stdout);
+#endif
+}
+
+/*-----------------------------------------------------------------------------------*/
+unsigned int
+tapdev_read(void)
+{
+ fd_set fdset;
+ struct timeval tv, now;
+ int ret;
+
+ if(lasttime >= 500000) {
+ lasttime = 0;
+ return 0;
+ }
+
+ tv.tv_sec = 0;
+ tv.tv_usec = 500000 - lasttime;
+
+
+ FD_ZERO(&fdset);
+ FD_SET(fd, &fdset);
+
+ gettimeofday(&now, &tz);
+ ret = select(fd + 1, &fdset, NULL, NULL, &tv);
+ if(ret == 0) {
+ lasttime = 0;
+ return 0;
+ }
+ ret = read(fd, uip_buf, UIP_BUFSIZE);
+ if(ret == -1) {
+ perror("tap_dev: tapdev_read: read");
+ }
+ gettimeofday(&tv, &tz);
+ lasttime += (tv.tv_sec - now.tv_sec) * 1000000 + (tv.tv_usec - now.tv_usec);
+ dump_mem(0, ret);
+ return ret;
+}
+/*-----------------------------------------------------------------------------------*/
+void
+tapdev_send(void)
+{
+ int ret;
+ struct iovec iov[2];
+
+#ifdef linux
+ {
+ char tmpbuf[UIP_BUFSIZE];
+ int i;
+
+ for(i = 0; i < 40 + UIP_LLH_LEN; i++) {
+ tmpbuf[i] = uip_buf[i];
+ }
+
+ for(; i < uip_len; i++) {
+ tmpbuf[i] = uip_appdata[i - 40 - UIP_LLH_LEN];
+ }
+
+ ret = write(fd, tmpbuf, uip_len);
+ }
+#else
+
+ if(uip_len < 40 + UIP_LLH_LEN) {
+ ret = write(fd, uip_buf, uip_len + UIP_LLH_LEN);
+ } else {
+ iov[0].iov_base = uip_buf;
+ iov[0].iov_len = 40 + UIP_LLH_LEN;
+ iov[1].iov_base = (char *)uip_appdata;
+ iov[1].iov_len = uip_len - (40 + UIP_LLH_LEN);
+
+ ret = writev(fd, iov, 2);
+ }
+#endif
+ dump_mem(1, ret);
+
+ if(ret == -1) {
+ perror("tap_dev: tapdev_send: writev");
+ exit(1);
+ }
+}
+/*-----------------------------------------------------------------------------------*/
--- /dev/null
+++ b/net/uip-0.9/tapdev.h
@@ -0,0 +1,42 @@
+/*
+ * 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.
+ *
+ * $Id: tapdev.h,v 1.1.2.1 2003/10/04 22:54:17 adam Exp $
+ *
+ */
+
+#ifndef __TAPDEV_H__
+#define __TAPDEV_H__
+
+void tapdev_init(void);
+unsigned int tapdev_read(void);
+void tapdev_send(void);
+
+#endif /* __TAPDEV_H__ */
--- /dev/null
+++ b/net/uip-0.9/uip.c
@@ -0,0 +1,1503 @@
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \file
+ * The uIP TCP/IP stack code.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/*
+ * 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.
+ *
+ * $Id: uip.c,v 1.62.2.10 2003/10/07 13:23:01 adam Exp $
+ *
+ */
+
+/*
+This is a small implementation of the IP and TCP protocols (as well as
+some basic ICMP stuff). The implementation couples the IP, TCP and the
+application layers very tightly. To keep the size of the compiled code
+down, this code also features heavy usage of the goto statement.
+
+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 upon 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, 40 bytes from the start of the buffer. 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_arch.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 unsigned short int uip_hostaddr[2] =
+ {HTONS((UIP_IPADDR0 << 8) | UIP_IPADDR1),
+ HTONS((UIP_IPADDR2 << 8) | UIP_IPADDR3)};
+const unsigned short int uip_arp_draddr[2] =
+ {HTONS((UIP_DRIPADDR0 << 8) | UIP_DRIPADDR1),
+ HTONS((UIP_DRIPADDR2 << 8) | UIP_DRIPADDR3)};
+const unsigned short int uip_arp_netmask[2] =
+ {HTONS((UIP_NETMASK0 << 8) | UIP_NETMASK1),
+ HTONS((UIP_NETMASK2 << 8) | UIP_NETMASK3)};
+#else
+unsigned short int uip_hostaddr[2];
+unsigned short int uip_arp_draddr[2], uip_arp_netmask[2];
+#endif /* UIP_FIXEDADDR */
+
+u8_t uip_buf[UIP_BUFSIZE+2]; /* The packet buffer that contains
+ incoming packets. */
+volatile u8_t *uip_appdata; /* The uip_appdata pointer points to
+ application data. */
+volatile u8_t *uip_sappdata; /* The uip_appdata pointer points to the
+ application data which is to be sent. */
+#if UIP_URGDATA > 0
+volatile u8_t *uip_urgdata; /* The uip_urgdata pointer points to
+ urgent data (out-of-band data), if
+ present. */
+volatile u8_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+volatile unsigned short int uip_len, uip_slen;
+ /* The uip_len is either 8 or 16 bits,
+ depending on the maximum packet
+ size. */
+
+volatile u8_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. */
+unsigned short int 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 unsigned short int ipid; /* Ths ipid variable is an increasing
+ number that is used for the IP ID
+ field. */
+
+static u8_t iss[4]; /* The iss variable is used for the TCP
+ initial sequence number. */
+
+#if UIP_ACTIVE_OPEN
+static unsigned short int lastport; /* Keeps track of the last port used for
+ a new connection. */
+#endif /* UIP_ACTIVE_OPEN */
+
+/* Temporary variables. */
+volatile u8_t uip_acc32[4];
+static u8_t c, opt;
+static unsigned short int 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 ICMP_ECHO_REPLY 0
+#define ICMP_ECHO 8
+
+/* Macros. */
+#define BUF ((uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
+#define FBUF ((uip_tcpip_hdr *)&uip_reassbuf[0])
+#define ICMPBUF ((uip_icmpip_hdr *)&uip_buf[UIP_LLH_LEN])
+#define UDPBUF ((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
+extern void puts(const char *s);
+#define UIP_LOG(m) puts(m)
+#else
+#define UIP_LOG(m)
+#endif /* UIP_LOGGING == 1 */
+
+/*-----------------------------------------------------------------------------------*/
+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 = CLOSED;
+ }
+#if UIP_ACTIVE_OPEN
+ lastport = 1024;
+#endif /* UIP_ACTIVE_OPEN */
+
+#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(unsigned short int *ripaddr, unsigned short int 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 != CLOSED &&
+ conn->lport == htons(lastport)) {
+ goto again;
+ }
+ }
+
+
+ conn = 0;
+ for(c = 0; c < UIP_CONNS; ++c) {
+ cconn = &uip_conns[c];
+ if(cconn->tcpstateflags == CLOSED) {
+ conn = cconn;
+ break;
+ }
+ if(cconn->tcpstateflags == TIME_WAIT) {
+ if(conn == 0 ||
+ cconn->timer > uip_conn->timer) {
+ conn = cconn;
+ }
+ }
+ }
+
+ if(conn == 0) {
+ return 0;
+ }
+
+ conn->tcpstateflags = 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->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;
+ conn->lport = htons(lastport);
+ conn->rport = rport;
+ conn->ripaddr[0] = ripaddr[0];
+ conn->ripaddr[1] = ripaddr[1];
+
+ return conn;
+}
+#endif /* UIP_ACTIVE_OPEN */
+/*-----------------------------------------------------------------------------------*/
+#if UIP_UDP
+struct uip_udp_conn *
+uip_udp_new(unsigned short int *ripaddr, unsigned short int 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 == 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 = HTONS(lastport);
+ conn->rport = HTONS(rport);
+ conn->ripaddr[0] = ripaddr[0];
+ conn->ripaddr[1] = ripaddr[1];
+
+ return conn;
+}
+#endif /* UIP_UDP */
+/*-----------------------------------------------------------------------------------*/
+void
+uip_unlisten(unsigned short int port)
+{
+ for(c = 0; c < UIP_LISTENPORTS; ++c) {
+ if(uip_listenports[c] == port) {
+ uip_listenports[c] = 0;
+ return;
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+void
+uip_listen(unsigned short int 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
+#define UIP_REASS_BUFSIZE (UIP_BUFSIZE - UIP_LLH_LEN)
+static u8_t uip_reassbuf[UIP_REASS_BUFSIZE];
+static u8_t uip_reassbitmap[UIP_REASS_BUFSIZE / (8 * 8)];
+static const u8_t bitmap_bits[8] = {0xff, 0x7f, 0x3f, 0x1f,
+ 0x0f, 0x07, 0x03, 0x01};
+static unsigned short int uip_reasslen;
+static u8_t uip_reassflags;
+#define UIP_REASS_FLAG_LASTFRAG 0x01
+static u8_t uip_reasstmr;
+
+#define IP_HLEN 20
+#define IP_MF 0x20
+
+static u8_t
+uip_reass(void)
+{
+ unsigned short int offset, len;
+ unsigned short int 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, IP_HLEN);
+ uip_reasstmr = UIP_REASS_MAXAGE;
+ uip_reassflags = 0;
+ /* Clear the bitmap. */
+ memset(uip_reassbitmap, sizeof(uip_reassbitmap), 0);
+ }
+
+ /* 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[IP_HLEN + 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)] !=
+ (u8_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_REASSEMBL */
+/*-----------------------------------------------------------------------------------*/
+static void
+uip_add_rcv_nxt(unsigned short int 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(u8_t flag)
+{
+ register struct uip_conn *uip_connr = uip_conn;
+
+ uip_appdata = &uip_buf[40 + UIP_LLH_LEN];
+
+
+ /* Check if we were invoked because of the perodic timer fireing. */
+ 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];
+ }
+ }
+ }
+ uip_len = 0;
+ if(uip_connr->tcpstateflags == TIME_WAIT ||
+ uip_connr->tcpstateflags == FIN_WAIT_2) {
+ ++(uip_connr->timer);
+ if(uip_connr->timer == UIP_TIME_WAIT_TIMEOUT) {
+ uip_connr->tcpstateflags = CLOSED;
+ }
+ } else if(uip_connr->tcpstateflags != 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 == SYN_SENT ||
+ uip_connr->tcpstateflags == SYN_RCVD) &&
+ uip_connr->nrtx == UIP_MAXSYNRTX)) {
+ uip_connr->tcpstateflags = 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 & TS_MASK) {
+ case SYN_RCVD:
+ /* In the SYN_RCVD state, we should retransmit our
+ SYNACK. */
+ goto tcp_send_synack;
+
+#if UIP_ACTIVE_OPEN
+ case SYN_SENT:
+ /* In the SYN_SENT state, we retransmit out SYN. */
+ BUF->flags = 0;
+ goto tcp_send_syn;
+#endif /* UIP_ACTIVE_OPEN */
+
+ case 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_len = 0;
+ uip_slen = 0;
+ uip_flags = UIP_REXMIT;
+ UIP_APPCALL();
+ goto apprexmit;
+
+ case FIN_WAIT_1:
+ case CLOSING:
+ case LAST_ACK:
+ /* In all these states we should retransmit a FINACK. */
+ goto tcp_send_finack;
+
+ }
+ }
+ } else if((uip_connr->tcpstateflags & TS_MASK) == ESTABLISHED) {
+ /* If there was no need for a retransmission, we poll the
+ application for new data. */
+ uip_len = 0;
+ uip_slen = 0;
+ uip_flags = UIP_POLL;
+ UIP_APPCALL();
+ goto appsend;
+ }
+ }
+ goto drop;
+ }
+#if UIP_UDP
+ if(flag == UIP_UDP_TIMER) {
+ if(uip_udp_conn->lport != 0) {
+ uip_appdata = &uip_buf[UIP_LLH_LEN + 28];
+ 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 IPv4 input header processing code. */
+
+ /* 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;
+ }
+
+ /* Check the size of the packet. If the size reported to us in
+ uip_len doesn't match the size reported in the IP header, there
+ has been a transmission error and we drop the packet. */
+
+ if(BUF->len[0] != (uip_len >> 8)) { /* IP length, high byte. */
+ uip_len = (uip_len & 0xff) | (BUF->len[0] << 8);
+ }
+ if(BUF->len[1] != (uip_len & 0xff)) { /* IP length, low byte. */
+ uip_len = (uip_len & 0xff00) | BUF->len[1];
+ }
+
+ /* 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_STAT(++uip_stat.ip.drop);
+ UIP_STAT(++uip_stat.ip.fragerr);
+ UIP_LOG("ip: fragment dropped.");
+ goto drop;
+#endif /* UIP_REASSEMBLY */
+ }
+
+ /* If we are configured to use ping IP address configuration and
+ hasn't been assigned an IP address yet, we accept all ICMP
+ packets. */
+#if UIP_PINGADDRCONF
+ if((uip_hostaddr[0] | uip_hostaddr[1]) == 0) {
+ 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 */
+
+ /* Check if the packet is destined for our IP address. */
+ if(BUF->destipaddr[0] != uip_hostaddr[0]) {
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_LOG("ip: packet not for us.");
+ goto drop;
+ }
+ if(BUF->destipaddr[1] != uip_hostaddr[1]) {
+ UIP_STAT(++uip_stat.ip.drop);
+ UIP_LOG("ip: packet not for us.");
+ goto drop;
+ }
+
+ 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;
+ }
+
+ if(BUF->proto == UIP_PROTO_TCP) /* Check for TCP packet. If so, jump
+ to the tcp_input label. */
+ goto tcp_input;
+
+#if UIP_UDP
+ if(BUF->proto == UIP_PROTO_UDP)
+ goto udp_input;
+#endif /* UIP_UDP */
+
+ 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;
+ }
+
+ //icmp_input:
+ 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_hostaddr[0] | uip_hostaddr[1]) == 0) {
+ uip_hostaddr[0] = BUF->destipaddr[0];
+ uip_hostaddr[1] = BUF->destipaddr[1];
+ }
+#endif /* UIP_PINGADDRCONF */
+
+ ICMPBUF->type = ICMP_ECHO_REPLY;
+
+ if(ICMPBUF->icmpchksum >= HTONS(0xffff - (ICMP_ECHO << 8))) {
+ ICMPBUF->icmpchksum += HTONS(ICMP_ECHO << 8) + 1;
+ } else {
+ ICMPBUF->icmpchksum += HTONS(ICMP_ECHO << 8);
+ }
+
+ /* Swap IP addresses. */
+ tmp16 = BUF->destipaddr[0];
+ BUF->destipaddr[0] = BUF->srcipaddr[0];
+ BUF->srcipaddr[0] = tmp16;
+ tmp16 = BUF->destipaddr[1];
+ BUF->destipaddr[1] = BUF->srcipaddr[1];
+ BUF->srcipaddr[1] = tmp16;
+
+ UIP_STAT(++uip_stat.icmp.sent);
+ goto send;
+
+ /* End of IPv4 input header processing code. */
+
+
+#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
+ if(uip_udpchksum() != 0xffff) {
+ UIP_STAT(++uip_stat.udp.drop);
+ UIP_STAT(++uip_stat.udp.chkerr);
+ UIP_LOG("udp: bad checksum.");
+ goto drop;
+ }
+#endif /* UIP_UDP_CHECKSUMS */
+
+ /* 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(uip_udp_conn->lport != 0 &&
+ UDPBUF->destport == uip_udp_conn->lport &&
+ (uip_udp_conn->rport == 0 ||
+ UDPBUF->srcport == uip_udp_conn->rport) &&
+ BUF->srcipaddr[0] == uip_udp_conn->ripaddr[0] &&
+ BUF->srcipaddr[1] == uip_udp_conn->ripaddr[1]) {
+ goto udp_found;
+ }
+ }
+ goto drop;
+
+ udp_found:
+ uip_len = uip_len - 28;
+ uip_appdata = &uip_buf[UIP_LLH_LEN + 28];
+ uip_flags = UIP_NEWDATA;
+ uip_slen = 0;
+ UIP_UDP_APPCALL();
+ udp_send:
+ if(uip_slen == 0) {
+ goto drop;
+ }
+ uip_len = uip_slen + 28;
+
+ BUF->len[0] = (uip_len >> 8);
+ BUF->len[1] = (uip_len & 0xff);
+
+ BUF->proto = UIP_PROTO_UDP;
+
+ UDPBUF->udplen = HTONS(uip_slen + 8);
+ UDPBUF->udpchksum = 0;
+#if UIP_UDP_CHECKSUMS
+ /* Calculate UDP checksum. */
+ UDPBUF->udpchksum = ~(uip_udpchksum());
+ if(UDPBUF->udpchksum == 0) {
+ UDPBUF->udpchksum = 0xffff;
+ }
+#endif /* UIP_UDP_CHECKSUMS */
+
+ BUF->srcport = uip_udp_conn->lport;
+ BUF->destport = uip_udp_conn->rport;
+
+ BUF->srcipaddr[0] = uip_hostaddr[0];
+ BUF->srcipaddr[1] = uip_hostaddr[1];
+ BUF->destipaddr[0] = uip_udp_conn->ripaddr[0];
+ BUF->destipaddr[1] = uip_udp_conn->ripaddr[1];
+
+ uip_appdata = &uip_buf[UIP_LLH_LEN + 40];
+ goto ip_send_nolen;
+#endif /* UIP_UDP */
+
+ /* TCP input processing. */
+ 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;
+ }
+
+ /* Demultiplex this segment. */
+ /* First check any active connections. */
+ for(uip_connr = &uip_conns[0]; uip_connr < &uip_conns[UIP_CONNS]; ++uip_connr) {
+ if(uip_connr->tcpstateflags != CLOSED &&
+ BUF->destport == uip_connr->lport &&
+ BUF->srcport == uip_connr->rport &&
+ BUF->srcipaddr[0] == uip_connr->ripaddr[0] &&
+ BUF->srcipaddr[1] == uip_connr->ripaddr[1]) {
+ goto found;
+ }
+ }
+
+ /* If we didn't find and 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 = 40;
+ 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. */
+ tmp16 = BUF->destipaddr[0];
+ BUF->destipaddr[0] = BUF->srcipaddr[0];
+ BUF->srcipaddr[0] = tmp16;
+ tmp16 = BUF->destipaddr[1];
+ BUF->destipaddr[1] = BUF->srcipaddr[1];
+ BUF->srcipaddr[1] = tmp16;
+
+
+ /* 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 == CLOSED) {
+ uip_connr = &uip_conns[c];
+ break;
+ }
+ if(uip_conns[c].tcpstateflags == 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_connr->ripaddr[0] = BUF->srcipaddr[0];
+ uip_connr->ripaddr[1] = BUF->srcipaddr[1];
+ uip_connr->tcpstateflags = 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[3] = BUF->seqno[3];
+ uip_connr->rcv_nxt[2] = BUF->seqno[2];
+ uip_connr->rcv_nxt[1] = BUF->seqno[1];
+ uip_connr->rcv_nxt[0] = BUF->seqno[0];
+ 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 == 0x00) {
+ /* End of options. */
+ break;
+ } else if(opt == 0x01) {
+ ++c;
+ /* NOP option. */
+ } else if(opt == 0x02 &&
+ uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0x04) {
+ /* An MSS option with the right option length. */
+ tmp16 = ((unsigned short int)uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) |
+ (unsigned short int)uip_buf[40 + 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] = 2;
+ BUF->optdata[1] = 4;
+ BUF->optdata[2] = (UIP_TCP_MSS) / 256;
+ BUF->optdata[3] = (UIP_TCP_MSS) & 255;
+ uip_len = 44;
+ BUF->tcpoffset = 6 << 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 wihtin our advertised window
+ before we accept the reset. */
+ if(BUF->flags & TCP_RST) {
+ uip_connr->tcpstateflags = CLOSED;
+ UIP_LOG("tcp: got reset, aborting connection.");
+ uip_flags = UIP_ABORT;
+ UIP_APPCALL();
+ goto drop;
+ }
+ /* Calculated 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 - 20;
+
+ /* 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. */
+ if(uip_len > 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;
+ }
+
+ }
+
+ /* Do different things depending on in what state the connection is. */
+ switch(uip_connr->tcpstateflags & 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 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 = 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;
+ }
+ goto drop;
+#if UIP_ACTIVE_OPEN
+ case 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_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[40 + UIP_LLH_LEN + c];
+ if(opt == 0x00) {
+ /* End of options. */
+ break;
+ } else if(opt == 0x01) {
+ ++c;
+ /* NOP option. */
+ } else if(opt == 0x02 &&
+ uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0x04) {
+ /* 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 = 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_len = 0;
+ uip_slen = 0;
+ UIP_APPCALL();
+ goto appsend;
+ }
+ goto reset;
+#endif /* UIP_ACTIVE_OPEN */
+
+ case 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) {
+ 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 = 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) {
+#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;
+#endif /* UIP_URGDATA > 0 */
+ uip_appdata += (BUF->urgp[0] << 8) | BUF->urgp[1];
+ uip_len -= (BUF->urgp[0] << 8) | BUF->urgp[1];
+ }
+
+
+ /* 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 = ((unsigned short int)BUF->wnd[0] << 8) + (unsigned short int)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 40 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 = 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 = 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;
+ }
+ } else {
+ uip_connr->len = 0;
+ }
+ 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 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 = CLOSED;
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ }
+ break;
+
+ case 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 = TIME_WAIT;
+ uip_connr->timer = 0;
+ uip_connr->len = 0;
+ } else {
+ uip_connr->tcpstateflags = 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 = FIN_WAIT_2;
+ uip_connr->len = 0;
+ goto drop;
+ }
+ if(uip_len > 0) {
+ goto tcp_send_ack;
+ }
+ goto drop;
+
+ case FIN_WAIT_2:
+ if(uip_len > 0) {
+ uip_add_rcv_nxt(uip_len);
+ }
+ if(BUF->flags & TCP_FIN) {
+ uip_connr->tcpstateflags = 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 TIME_WAIT:
+ goto tcp_send_ack;
+
+ case CLOSING:
+ if(uip_flags & UIP_ACKDATA) {
+ uip_connr->tcpstateflags = 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 = 40;
+ tcp_send_noopts:
+ BUF->tcpoffset = 5 << 4;
+ tcp_send:
+ /* 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. */
+ 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->proto = UIP_PROTO_TCP;
+
+ BUF->srcport = uip_connr->lport;
+ BUF->destport = uip_connr->rport;
+
+ BUF->srcipaddr[0] = uip_hostaddr[0];
+ BUF->srcipaddr[1] = uip_hostaddr[1];
+ BUF->destipaddr[0] = uip_connr->ripaddr[0];
+ BUF->destipaddr[1] = uip_connr->ripaddr[1];
+
+
+ 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->len[0] = (uip_len >> 8);
+ BUF->len[1] = (uip_len & 0xff);
+
+ /* Calculate TCP checksum. */
+ BUF->tcpchksum = 0;
+ BUF->tcpchksum = ~(uip_tcpchksum());
+
+ //ip_send_nolen:
+
+ BUF->vhl = 0x45;
+ BUF->tos = 0;
+ BUF->ipoffset[0] = BUF->ipoffset[1] = 0;
+ BUF->ttl = UIP_TTL;
+ ++ipid;
+ BUF->ipid[0] = ipid >> 8;
+ BUF->ipid[1] = ipid & 0xff;
+
+ /* Calculate IP checksum. */
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~(uip_ipchksum());
+
+ UIP_STAT(++uip_stat.tcp.sent);
+ send:
+ UIP_STAT(++uip_stat.ip.sent);
+ /* Return and let the caller do the actual transmission. */
+ return;
+ drop:
+ uip_len = 0;
+ return;
+}
+/*-----------------------------------------------------------------------------------*/
+/*unsigned short int
+htons(unsigned short int val)
+{
+ return HTONS(val);
+}*/
+/*-----------------------------------------------------------------------------------*/
+/** @} */
--- /dev/null
+++ b/net/uip-0.9/uip.h
@@ -0,0 +1,1066 @@
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \file
+ * Header file for the uIP TCP/IP stack.
+ * \author Adam Dunkels <adam@dunkels.com>
+ *
+ * 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.
+ *
+ */
+
+
+/*
+ * 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.
+ *
+ * $Id: uip.h,v 1.36.2.7 2003/10/07 13:47:51 adam Exp $
+ *
+ */
+
+#ifndef __UIP_H__
+#define __UIP_H__
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <malloc.h>
+#include <common.h>
+
+
+#include "uipopt.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.
+ *
+ * \param addr A pointer to a 4-byte representation of the IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_sethostaddr(addr) do { uip_hostaddr[0] = addr[0]; \
+ uip_hostaddr[1] = addr[1]; } while(0)
+
+/**
+ * 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.
+ *
+ * \param addr A pointer to a 4-byte array that will be filled in with
+ * the currently configured IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_gethostaddr(addr) do { addr[0] = uip_hostaddr[0]; \
+ addr[1] = uip_hostaddr[1]; } while(0)
+
+/** @} */
+
+/**
+ * \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);
+
+/** @} */
+
+/**
+ * \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 == HTONS(UIP_ETHTYPE_IP)) {
+ uip_arp_ipin();
+ uip_input();
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ } else if(BUF->type == 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 conneciton, 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 ususal 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
+ */
+#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \
+ uip_process(UIP_TIMER); } while (0)
+
+/**
+ * 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)
+
+#if UIP_UDP
+/**
+ * Periodic processing for a UDP connection identified by its number.
+ *
+ * This function is essentially the same as uip_prerioic(), 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 */
+
+/**
+ * The uIP packet buffer.
+ *
+ * The uip_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);
+ hwsend(&uip_buf[UIP_LLH_LEN], 40);
+ hwsend(uip_appdata, uip_len - 40 - UIP_LLH_LEN);
+ }
+ \endcode
+ */
+extern u8_t uip_buf[UIP_BUFSIZE+2];
+
+/** @} */
+
+/*-----------------------------------------------------------------------------------*/
+/* 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 of top of uIP.
+ */
+
+/**
+ * Start listening to the specified port.
+ *
+ * \note Since this function expects the port number in network byte
+ * order, a conversion using HTONS() or htons() is necessary.
+ *
+ \code
+ uip_listen(HTONS(80));
+ \endcode
+ *
+ * \param port A 16-bit port number in network byte order.
+ */
+void uip_listen(u16_t port);
+
+/**
+ * Stop listening to the specified port.
+ *
+ * \note Since this function expects the port number in network byte
+ * order, a conversion using HTONS() or htons() is necessary.
+ *
+ \code
+ uip_unlisten(HTONS(80));
+ \endcode
+ *
+ * \param port A 16-bit port number in network byte order.
+ */
+void uip_unlisten(u16_t port);
+
+/**
+ * Connect to a remote host using TCP.
+ *
+ * This function is used to start a new connection to the specified
+ * port on the specied 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 avaliable 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 convertion using HTONS() or htons() is necessary.
+ *
+ \code
+ u16_t ipaddr[2];
+
+ uip_ipaddr(ipaddr, 192,168,1,2);
+ uip_connect(ipaddr, HTONS(80));
+ \endcode
+ *
+ * \param ripaddr A pointer to a 4-byte array representing the IP
+ * address of the remote hot.
+ *
+ * \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(u16_t *ripaddr, u16_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
+ * funcion 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
+ */
+#define uip_send(data, len) do { uip_sappdata = (data); uip_slen = (len);} while(0)
+
+/**
+ * The length of any incoming data that is currently avaliable (if avaliable)
+ * 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
+ */
+#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 occured 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 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
+ * avaliable 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 maxium segment size (MSS) of the current
+ * connection.
+ *
+ * \hideinitializer
+ */
+#define uip_initialmss() (uip_conn->initialmss)
+
+/**
+ * Get the current maxium segment size that can be sent on the current
+ * connection.
+ *
+ * The current maxiumum 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.
+ *
+ * \param ripaddr A pointer to a 4-byte structure representing 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(u16_t *ripaddr, u16_t rport);
+
+/**
+ * Removed 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
+
+/**
+ * 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_slen = (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.
+ */
+
+/**
+ * Pack an IP address into a 4-byte array which is used by uIP to
+ * represent IP addresses.
+ *
+ * Example:
+ \code
+ u16_t ipaddr[2];
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ \endcode
+ *
+ * \param addr A pointer to a 4-byte array that will be filled in with
+ * the IP addres.
+ * \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)[0] = HTONS(((addr0) << 8) | (addr1)); \
+ (addr)[1] = HTONS(((addr2) << 8) | (addr3)); \
+ } while(0)
+
+/**
+ * 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 htons() function instead.
+ *
+ * \hideinitializer
+ */
+#ifndef HTONS
+# if BYTE_ORDER == BIG_ENDIAN
+# define HTONS(n) (n)
+# else /* BYTE_ORDER == BIG_ENDIAN */
+# define HTONS(n) ((((u16_t)((n) & 0xff)) << 8) | (((n) & 0xff00) >> 8))
+# endif /* BYTE_ORDER == BIG_ENDIAN */
+#endif /* HTONS */
+
+/**
+ * Convert 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 HTONS() macro instead.
+ */
+#ifndef htons
+u16_t htons(u16_t val);
+#endif /* htons */
+
+/** @} */
+
+/**
+ * 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().
+ */
+extern volatile u8_t *uip_appdata;
+extern volatile u8_t *uip_sappdata;
+
+#if UIP_URGDATA > 0
+/* u8_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 volatile u8_t *uip_urgdata;
+#endif /* UIP_URGDATA > 0 */
+
+
+/* u[8|16]_t uip_len:
+ *
+ * When the application is called, uip_len contains the length of any
+ * new data that has been received from the remote host. The
+ * application should set this variable to the size of any data that
+ * the application wishes to send. When the network device driver
+ * output function is called, uip_len should contain the length of the
+ * outgoing packet.
+ */
+extern volatile u16_t uip_len, uip_slen;
+
+#if UIP_URGDATA > 0
+extern volatile u8_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+
+/**
+ * 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 whos purpose
+ * is to let the application store application-specific state (e.g.,
+ * file pointers) for the connection. The size of this field is
+ * configured in the "uipopt.h" header file.
+ */
+struct uip_conn {
+ u16_t ripaddr[2]; /**< The IP address of the remote host. */
+
+ u16_t lport; /**< The local TCP port, in network byte order. */
+ u16_t rport; /**< The local remote TCP port, in network byte
+ order. */
+
+ u8_t rcv_nxt[4]; /**< The sequence number that we expect to
+ receive next. */
+ u8_t snd_nxt[4]; /**< The sequence number that was last sent by
+ us. */
+ u16_t len; /**< Length of the data that was previously sent. */
+ u16_t mss; /**< Current maximum segment size for the
+ connection. */
+ u16_t initialmss; /**< Initial maximum segment size for the
+ connection. */
+ u8_t sa; /**< Retransmission time-out calculation state
+ variable. */
+ u8_t sv; /**< Retransmission time-out calculation state
+ variable. */
+ u8_t rto; /**< Retransmission time-out. */
+ u8_t tcpstateflags; /**< TCP state and flags. */
+ u8_t timer; /**< The retransmission timer. */
+ u8_t nrtx; /**< The number of retransmissions for the last
+ segment sent. */
+
+ /** The application state. */
+ u8_t appstate[UIP_APPSTATE_SIZE];
+};
+
+
+/* Pointer to the current connection. */
+extern struct uip_conn *uip_conn;
+/* The array containing all uIP connections. */
+extern struct uip_conn uip_conns[UIP_CONNS];
+/**
+ * \addtogroup uiparch
+ * @{
+ */
+
+/**
+ * 4-byte array used for the 32-bit sequence number calculations.
+ */
+extern volatile u8_t uip_acc32[4];
+
+/** @} */
+
+
+#if UIP_UDP
+/**
+ * Representation of a uIP UDP connection.
+ */
+struct uip_udp_conn {
+ u16_t ripaddr[2]; /**< The IP address of the remote peer. */
+ u16_t lport; /**< The local port number in network byte order. */
+ u16_t rport; /**< The remote port number in network byte order. */
+};
+
+extern struct uip_udp_conn *uip_udp_conn;
+extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+#endif /* UIP_UDP */
+
+/**
+ * The structure holding the TCP/IP statistics that are gathered if
+ * UIP_STATISTICS is set to 1.
+ *
+ */
+struct uip_stats {
+ struct {
+ uip_stats_t drop; /**< Number of dropped packets at the IP
+ layer. */
+ 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 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 since 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 since they
+ were neither ICMP, UDP nor TCP. */
+ } ip; /**< IP statistics. */
+ struct {
+ uip_stats_t drop; /**< Number of dropped ICMP packets. */
+ uip_stats_t recv; /**< Number of received ICMP packets. */
+ uip_stats_t sent; /**< Number of sent ICMP packets. */
+ uip_stats_t typeerr; /**< Number of ICMP packets with a wrong
+ type. */
+ } icmp; /**< ICMP statistics. */
+ struct {
+ uip_stats_t drop; /**< Number of dropped TCP segments. */
+ uip_stats_t recv; /**< Number of recived TCP segments. */
+ uip_stats_t sent; /**< Number of sent 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 recevied TCP RST (reset) segments. */
+ uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */
+ uip_stats_t syndrop; /**< Number of dropped SYNs due to too few
+ connections was avaliable. */
+ uip_stats_t synrst; /**< Number of SYNs for closed ports,
+ triggering a RST. */
+ } tcp; /**< TCP statistics. */
+};
+
+/**
+ * The uIP TCP/IP statistics.
+ *
+ * This is the variable in which the uIP TCP/IP statistics are gathered.
+ */
+extern struct uip_stats uip_stat;
+
+
+/*-----------------------------------------------------------------------------------*/
+/* All the stuff below this point is internal to uIP and should not be
+ * used directly by an application or by a device driver.
+ */
+/*-----------------------------------------------------------------------------------*/
+/* u8_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
+ * infomation.
+ */
+extern volatile u8_t uip_flags;
+
+/* The following flags may be set in the global variable uip_flags
+ before calling the application callback. The UIP_ACKDATA and
+ UIP_NEWDATA flags may both be set at the same time, whereas the
+ others are mutualy exclusive. Note that these flags should *NOT* be
+ accessed directly, but 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. */
+
+
+/* uip_process(flag):
+ *
+ * The actual uIP function which does all the work.
+ */
+void uip_process(u8_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. */
+
+#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. */
+#if UIP_UDP
+#define UIP_UDP_TIMER 3
+#endif /* UIP_UDP */
+
+/* The TCP states used in the uip_conn->tcpstateflags. */
+#define CLOSED 0
+#define SYN_RCVD 1
+#define SYN_SENT 2
+#define ESTABLISHED 3
+#define FIN_WAIT_1 4
+#define FIN_WAIT_2 5
+#define CLOSING 6
+#define TIME_WAIT 7
+#define LAST_ACK 8
+#define TS_MASK 15
+
+#define UIP_STOPPED 16
+
+#define UIP_TCPIP_HLEN 40
+
+/* The TCP and IP headers. */
+typedef struct {
+ /* IP header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+
+ /* TCP header. */
+ u16_t srcport,
+ destport;
+ u8_t seqno[4],
+ ackno[4],
+ tcpoffset,
+ flags,
+ wnd[2];
+ u16_t tcpchksum;
+ u8_t urgp[2];
+ u8_t optdata[4];
+} uip_tcpip_hdr;
+
+/* The ICMP and IP headers. */
+typedef struct {
+ /* IP header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+ /* ICMP (echo) header. */
+ u8_t type, icode;
+ u16_t icmpchksum;
+ u16_t id, seqno;
+} uip_icmpip_hdr;
+
+
+/* The UDP and IP headers. */
+typedef struct {
+ /* IP header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+
+ /* UDP header. */
+ u16_t srcport,
+ destport;
+ u16_t udplen;
+ u16_t udpchksum;
+} uip_udpip_hdr;
+
+#define UIP_PROTO_ICMP 1
+#define UIP_PROTO_TCP 6
+#define UIP_PROTO_UDP 17
+
+#if UIP_FIXEDADDR
+extern const u16_t uip_hostaddr[2];
+#else /* UIP_FIXEDADDR */
+extern u16_t uip_hostaddr[2];
+#endif /* UIP_FIXEDADDR */
+
+#endif /* __UIP_H__ */
+
+
+/** @} */
+
--- /dev/null
+++ b/net/uip-0.9/uip_arch.c
@@ -0,0 +1,145 @@
+/*
+ * 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.
+ *
+ * $Id: uip_arch.c,v 1.2.2.1 2003/10/04 22:54:17 adam Exp $
+ *
+ */
+
+
+#include "uip.h"
+#include "uip_arch.h"
+
+#define BUF ((uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
+#define IP_PROTO_TCP 6
+
+/*-----------------------------------------------------------------------------------*/
+void
+uip_add32(u8_t *op32, u16_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];
+ }
+ }
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+uip_chksum(u16_t *sdata, u16_t len)
+{
+ u16_t acc;
+
+ for(acc = 0; len > 1; len -= 2) {
+ acc += *sdata;
+ if(acc < *sdata) {
+ /* Overflow, so we add the carry to acc (i.e., increase by
+ one). */
+ ++acc;
+ }
+ ++sdata;
+ }
+
+ /* add up any odd byte */
+ if(len == 1) {
+ acc += htons(((u16_t)(*(u8_t *)sdata)) << 8);
+ if(acc < htons(((u16_t)(*(u8_t *)sdata)) << 8)) {
+ ++acc;
+ }
+ }
+
+ return acc;
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+uip_ipchksum(void)
+{
+ return uip_chksum((u16_t *)&uip_buf[UIP_LLH_LEN], 20);
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+uip_tcpchksum(void)
+{
+ u16_t hsum, sum;
+
+
+ /* Compute the checksum of the TCP header. */
+ hsum = uip_chksum((u16_t *)&uip_buf[20 + UIP_LLH_LEN], 20);
+
+ /* Compute the checksum of the data in the TCP packet and add it to
+ the TCP header checksum. */
+ sum = uip_chksum((u16_t *)uip_appdata,
+ (u16_t)(((((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - 40)));
+
+ if((sum += hsum) < hsum) {
+ ++sum;
+ }
+
+ if((sum += BUF->srcipaddr[0]) < BUF->srcipaddr[0]) {
+ ++sum;
+ }
+ if((sum += BUF->srcipaddr[1]) < BUF->srcipaddr[1]) {
+ ++sum;
+ }
+ if((sum += BUF->destipaddr[0]) < BUF->destipaddr[0]) {
+ ++sum;
+ }
+ if((sum += BUF->destipaddr[1]) < BUF->destipaddr[1]) {
+ ++sum;
+ }
+ if((sum += (u16_t)htons((u16_t)IP_PROTO_TCP)) < (u16_t)htons((u16_t)IP_PROTO_TCP)) {
+ ++sum;
+ }
+
+ hsum = (u16_t)htons((((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - 20);
+
+ if((sum += hsum) < hsum) {
+ ++sum;
+ }
+
+ return sum;
+}
+/*-----------------------------------------------------------------------------------*/
--- /dev/null
+++ b/net/uip-0.9/uip_arch.h
@@ -0,0 +1,130 @@
+/**
+ * \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.
+ *
+ */
+
+/**
+ * \file
+ * Declarations of architecture specific functions.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/*
+ * 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.
+ *
+ * $Id: uip_arch.h,v 1.1.2.2 2003/10/06 15:10:22 adam Exp $
+ *
+ */
+
+#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(u8_t *op32, u16_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 buf 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.
+ */
+u16_t uip_chksum(u16_t *buf, u16_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.
+ */
+u16_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.
+ */
+u16_t uip_tcpchksum(void);
+
+/** @} */
+
+#endif /* __UIP_ARCH_H__ */
--- /dev/null
+++ b/net/uip-0.9/uip_arp.c
@@ -0,0 +1,421 @@
+/**
+ * \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.
+ */
+
+/**
+ * \file
+ * Implementation of the ARP Address Resolution Protocol.
+ * \author Adam Dunkels <adam@dunkels.com>
+ *
+ */
+
+/*
+ * 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.
+ *
+ * $Id: uip_arp.c,v 1.7.2.3 2003/10/06 22:42:30 adam Exp $
+ *
+ */
+
+
+#include "uip_arp.h"
+
+struct arp_hdr {
+ struct uip_eth_hdr ethhdr;
+ u16_t hwtype;
+ u16_t protocol;
+ u8_t hwlen;
+ u8_t protolen;
+ u16_t opcode;
+ struct uip_eth_addr shwaddr;
+ u16_t sipaddr[2];
+ struct uip_eth_addr dhwaddr;
+ u16_t dipaddr[2];
+};
+
+struct ethip_hdr {
+ struct uip_eth_hdr ethhdr;
+ /* IP header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+};
+
+#define ARP_REQUEST 1
+#define ARP_REPLY 2
+
+#define ARP_HWTYPE_ETH 1
+
+struct arp_entry {
+ u16_t ipaddr[2];
+ struct uip_eth_addr ethaddr;
+ u8_t time;
+};
+
+struct uip_eth_addr uip_ethaddr = {{UIP_ETHADDR0,
+ UIP_ETHADDR1,
+ UIP_ETHADDR2,
+ UIP_ETHADDR3,
+ UIP_ETHADDR4,
+ UIP_ETHADDR5}};
+
+static struct arp_entry arp_table[UIP_ARPTAB_SIZE];
+static u16_t ipaddr[2];
+static u8_t i, c;
+
+static u8_t arptime;
+static u8_t tmpage;
+
+#define BUF ((struct arp_hdr *)&uip_buf[0])
+#define IPBUF ((struct ethip_hdr *)&uip_buf[0])
+/*-----------------------------------------------------------------------------------*/
+/**
+ * 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((tabptr->ipaddr[0] | tabptr->ipaddr[1]) != 0 &&
+ arptime - tabptr->time >= UIP_ARP_MAXAGE) {
+ memset(tabptr->ipaddr, 0, 4);
+ }
+ }
+
+}
+/*-----------------------------------------------------------------------------------*/
+static void
+uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr)
+{
+ register struct arp_entry *tabptr;
+ /* 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(tabptr->ipaddr[0] != 0 &&
+ tabptr->ipaddr[1] != 0) {
+
+ /* Check if the source IP address of the incoming packet matches
+ the IP address in this ARP table entry. */
+ if(ipaddr[0] == tabptr->ipaddr[0] &&
+ ipaddr[1] == tabptr->ipaddr[1]) {
+
+ /* An old entry found, update this and return. */
+ memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
+ tabptr->time = arptime;
+
+ return;
+ }
+ }
+ }
+
+ /* 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(tabptr->ipaddr[0] == 0 &&
+ tabptr->ipaddr[1] == 0) {
+ 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;
+ }
+
+ /* Now, i is the ARP table entry which we will fill with the new
+ information. */
+ memcpy(tabptr->ipaddr, ipaddr, 4);
+ 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.
+ */
+/*-----------------------------------------------------------------------------------*/
+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_arp_netmask[0]) !=
+ (uip_hostaddr[0] & uip_arp_netmask[0])) {
+ return;
+ }
+ if((IPBUF->srcipaddr[1] & uip_arp_netmask[1]) !=
+ (uip_hostaddr[1] & uip_arp_netmask[1])) {
+ return;
+ }
+ uip_arp_update(IPBUF->srcipaddr, &(IPBUF->ethhdr.src));
+
+ return;
+}
+/*-----------------------------------------------------------------------------------*/
+/**
+ * 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_len = 0;
+ return;
+ }
+
+ uip_len = 0;
+
+ switch(BUF->opcode) {
+ case 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]) {
+ /* The reply opcode is 2. */
+ BUF->opcode = HTONS(2);
+
+ memcpy(BUF->dhwaddr.addr, BUF->shwaddr.addr, 6);
+ memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6);
+ memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6);
+ memcpy(BUF->ethhdr.dest.addr, BUF->dhwaddr.addr, 6);
+
+ BUF->dipaddr[0] = BUF->sipaddr[0];
+ BUF->dipaddr[1] = BUF->sipaddr[1];
+ BUF->sipaddr[0] = uip_hostaddr[0];
+ BUF->sipaddr[1] = uip_hostaddr[1];
+
+ BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
+ uip_len = sizeof(struct arp_hdr);
+ }
+ break;
+ case HTONS(ARP_REPLY):
+ /* ARP reply. We insert or update the ARP table if it was meant
+ for us. */
+ if(BUF->dipaddr[0] == uip_hostaddr[0] &&
+ BUF->dipaddr[1] == uip_hostaddr[1]) {
+
+ 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;
+ /* 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. */
+
+ /* Check if the destination address is on the local network. */
+ if((IPBUF->destipaddr[0] & uip_arp_netmask[0]) !=
+ (uip_hostaddr[0] & uip_arp_netmask[0]) ||
+ (IPBUF->destipaddr[1] & uip_arp_netmask[1]) !=
+ (uip_hostaddr[1] & uip_arp_netmask[1])) {
+ /* 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. */
+ ipaddr[0] = uip_arp_draddr[0];
+ ipaddr[1] = uip_arp_draddr[1];
+ } else {
+ /* Else, we use the destination IP address. */
+ ipaddr[0] = IPBUF->destipaddr[0];
+ ipaddr[1] = IPBUF->destipaddr[1];
+ }
+
+ for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
+ tabptr = &arp_table[i];
+ if(ipaddr[0] == tabptr->ipaddr[0] &&
+ ipaddr[1] == tabptr->ipaddr[1])
+ break;
+ }
+
+ 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_ethaddr.addr, 6);
+ memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6);
+
+ BUF->dipaddr[0] = ipaddr[0];
+ BUF->dipaddr[1] = ipaddr[1];
+ BUF->sipaddr[0] = uip_hostaddr[0];
+ BUF->sipaddr[1] = uip_hostaddr[1];
+ BUF->opcode = HTONS(ARP_REQUEST); /* ARP request. */
+ BUF->hwtype = HTONS(ARP_HWTYPE_ETH);
+ BUF->protocol = HTONS(UIP_ETHTYPE_IP);
+ BUF->hwlen = 6;
+ BUF->protolen = 4;
+ BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
+
+ uip_appdata = &uip_buf[40 + 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_ethaddr.addr, 6);
+
+ IPBUF->ethhdr.type = HTONS(UIP_ETHTYPE_IP);
+
+ uip_len += sizeof(struct uip_eth_hdr);
+}
+/*-----------------------------------------------------------------------------------*/
+
+/** @} */
+/** @} */
--- /dev/null
+++ b/net/uip-0.9/uip_arp.h
@@ -0,0 +1,201 @@
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \addtogroup uiparp
+ * @{
+ */
+
+/**
+ * \file
+ * Macros and definitions for the ARP module.
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+
+/*
+ * 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.
+ *
+ * $Id: uip_arp.h,v 1.3.2.2 2003/10/06 15:10:22 adam Exp $
+ *
+ */
+
+#ifndef __UIP_ARP_H__
+#define __UIP_ARP_H__
+
+#include "uip.h"
+
+
+/**
+ * Representation of a 48-bit Ethernet address.
+ */
+struct uip_eth_addr {
+ u8_t addr[6];
+};
+
+extern struct uip_eth_addr uip_ethaddr;
+
+/**
+ * The Ethernet header.
+ */
+struct uip_eth_hdr {
+ struct uip_eth_addr dest;
+ struct uip_eth_addr src;
+ u16_t type;
+};
+
+#define UIP_ETHTYPE_ARP 0x0806
+#define UIP_ETHTYPE_IP 0x0800
+#define UIP_ETHTYPE_IP6 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);
+
+/* 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
+ * @{
+ */
+
+/**
+ * Set the default router's IP address.
+ *
+ * \param addr A pointer to a 4-byte array containing the IP address
+ * of the default router.
+ *
+ * \hideinitializer
+ */
+#define uip_setdraddr(addr) do { uip_arp_draddr[0] = addr[0]; \
+ uip_arp_draddr[1] = addr[1]; } while(0)
+
+/**
+ * Set the netmask.
+ *
+ * \param addr A pointer to a 4-byte array containing the IP address
+ * of the netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_setnetmask(addr) do { uip_arp_netmask[0] = addr[0]; \
+ uip_arp_netmask[1] = addr[1]; } while(0)
+
+
+/**
+ * Get the default router's IP address.
+ *
+ * \param addr A pointer to a 4-byte array that will be filled in with
+ * the IP address of the default router.
+ *
+ * \hideinitializer
+ */
+#define uip_getdraddr(addr) do { addr[0] = uip_arp_draddr[0]; \
+ addr[1] = uip_arp_draddr[1]; } while(0)
+
+/**
+ * Get the netmask.
+ *
+ * \param addr A pointer to a 4-byte array that will be filled in with
+ * the value of the netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_getnetmask(addr) do { addr[0] = uip_arp_netmask[0]; \
+ addr[1] = uip_arp_netmask[1]; } while(0)
+
+
+/**
+ * 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_ethaddr.addr[0] = eaddr.addr[0]; \
+ uip_ethaddr.addr[1] = eaddr.addr[1];\
+ uip_ethaddr.addr[2] = eaddr.addr[2];\
+ uip_ethaddr.addr[3] = eaddr.addr[3];\
+ uip_ethaddr.addr[4] = eaddr.addr[4];\
+ uip_ethaddr.addr[5] = eaddr.addr[5];} while(0)
+
+/** @} */
+
+/**
+ * \internal Internal variables that are set using the macros
+ * uip_setdraddr and uip_setnetmask.
+ */
+extern u16_t uip_arp_draddr[2], uip_arp_netmask[2];
+#endif /* __UIP_ARP_H__ */
+
+
--- /dev/null
+++ b/net/uip-0.9/uipopt.h
@@ -0,0 +1,557 @@
+/**
+ * \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.
+ */
+
+/**
+ * \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.
+ */
+
+/*
+ * 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.
+ *
+ * $Id: uipopt.h,v 1.16.2.5 2003/10/07 13:22:51 adam Exp $
+ *
+ */
+
+#ifndef __UIPOPT_H__
+#define __UIPOPT_H__
+
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipopttypedef uIP type definitions
+ * @{
+ */
+
+/**
+ * The 8-bit unsigned data type.
+ *
+ * This may have to be tweaked for your particular compiler. "unsigned
+ * char" works for most compilers.
+ */
+typedef unsigned char u8_t;
+
+/**
+ * The 16-bit unsigned data type.
+ *
+ * This may have to be tweaked for your particular compiler. "unsigned
+ * short" works for most compilers.
+ */
+typedef unsigned short u16_t;
+
+/**
+ * The statistics data type.
+ *
+ * This datatype determines how high the statistics counters are able
+ * to count.
+ */
+typedef unsigned short uip_stats_t;
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \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 appliciable only
+ * if uIP should be run over Ethernet.
+ *
+ * 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 asignment.
+ *
+ * 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
+ */
+#define UIP_PINGADDRCONF 0
+
+#define UIP_IPADDR0 192 /**< The first octet of the IP address of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_IPADDR1 168 /**< The second octet of the IP address of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_IPADDR2 0 /**< The third octet of the IP address of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_IPADDR3 250 /**< The fourth octet of the IP address of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+
+#define UIP_NETMASK0 255 /**< The first octet of the netmask of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_NETMASK1 255 /**< The second octet of the netmask of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_NETMASK2 255 /**< The third octet of the netmask of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_NETMASK3 0 /**< The fourth octet of the netmask of
+ this uIP node, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+
+#define UIP_DRIPADDR0 192 /**< The first octet of the IP address of
+ the default router, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_DRIPADDR1 168 /**< The second octet of the IP address of
+ the default router, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_DRIPADDR2 0 /**< The third octet of the IP address of
+ the default router, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+#define UIP_DRIPADDR3 1 /**< The fourth octet of the IP address of
+ the default router, if UIP_FIXEDADDR is
+ 1. \hideinitializer */
+
+/**
+ * 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
+
+#define UIP_ETHADDR0 0x00 /**< The first octet of the Ethernet
+ address if UIP_FIXEDETHADDR is
+ 1. \hideinitializer */
+#define UIP_ETHADDR1 0xbd /**< The second octet of the Ethernet
+ address if UIP_FIXEDETHADDR is
+ 1. \hideinitializer */
+#define UIP_ETHADDR2 0x3b /**< The third octet of the Ethernet
+ address if UIP_FIXEDETHADDR is
+ 1. \hideinitializer */
+#define UIP_ETHADDR3 0x33 /**< The fourth octet of the Ethernet
+ address if UIP_FIXEDETHADDR is
+ 1. \hideinitializer */
+#define UIP_ETHADDR4 0x05 /**< The fifth octet of the Ethernet
+ address if UIP_FIXEDETHADDR is
+ 1. \hideinitializer */
+#define UIP_ETHADDR5 0x71 /**< The sixth octet of the Ethernet
+ address if UIP_FIXEDETHADDR is
+ 1. \hideinitializer */
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipoptip IP configuration options
+ * @{
+ *
+ */
+/**
+ * The IP TTL (time to live) of IP packets sent by uIP.
+ *
+ * This should normally not be changed.
+ */
+#define UIP_TTL 255
+
+/**
+ * Turn on support for IP packet reassembly.
+ *
+ * uIP supports reassembly of fragmented IP packets. This features
+ * requires an additonal 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
+ */
+#define UIP_REASSEMBLY 0
+
+/**
+ * The maximum time an IP fragment should wait in the reassembly
+ * buffer before it is dropped.
+ *
+ */
+#define UIP_REASS_MAXAGE 40
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+/**
+ * \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 wether UDP support should be compiled in or not.
+ *
+ * \hideinitializer
+ */
+#define UIP_UDP 0
+
+/**
+ * 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
+ */
+#define UIP_UDP_CHECKSUMS 0
+
+/**
+ * The maximum amount of concurrent UDP connections.
+ *
+ * \hideinitializer
+ */
+#define UIP_UDP_CONNS 10
+
+/**
+ * The name of the function that should be called when UDP datagrams arrive.
+ *
+ * \hideinitializer
+ */
+#define UIP_UDP_APPCALL udp_appcall
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \defgroup uipopttcp TCP configuration options
+ * @{
+ */
+
+/**
+ * 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 configration
+ * option can be turned off to reduce the code size of uIP.
+ *
+ * \hideinitializer
+ */
+#define UIP_ACTIVE_OPEN 1
+
+/**
+ * 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 approximatly 30 bytes of memory.
+ *
+ * \hideinitializer
+ */
+#define UIP_CONNS 10
+
+/**
+ * The maximum number of simultaneously listening TCP ports.
+ *
+ * Each listening TCP port requires 2 bytes of memory.
+ *
+ * \hideinitializer
+ */
+#define UIP_LISTENPORTS 10
+
+/**
+ * The size of the advertised receiver's window.
+ *
+ * Should be set low (i.e., to the size of the uip_buf buffer) is the
+ * application is slow to process incoming data, or high (32768 bytes)
+ * if the application processes data quickly.
+ *
+ * \hideinitializer
+ */
+#define UIP_RECEIVE_WINDOW 32768
+
+/**
+ * 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 1
+
+/**
+ * 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 3
+
+/**
+ * The TCP maximum segment size.
+ *
+ * This is should not be to set to more than UIP_BUFSIZE - UIP_LLH_LEN - 40.
+ */
+#define UIP_TCP_MSS (UIP_BUFSIZE - UIP_LLH_LEN - 40)
+
+/**
+ * How long a connection should stay in the TIME_WAIT state.
+ *
+ * This configiration option has no real implication, and it should be
+ * left untouched.
+ */
+#define UIP_TIME_WAIT_TIMEOUT 120
+
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \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
+ */
+#define UIP_ARPTAB_SIZE 8
+
+/**
+ * The maxium 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 uipoptgeneral General configuration options
+ * @{
+ */
+
+/**
+ * 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 1500 bytes. Lower size results in lower
+ * TCP throughput, larger size results in higher TCP throughput.
+ *
+ * \hideinitializer
+ */
+#define UIP_BUFSIZE 1500
+
+
+/**
+ * Determines if statistics support should be compiled in.
+ *
+ * The statistics is useful for debugging and to show the user.
+ *
+ * \hideinitializer
+ */
+#define UIP_STATISTICS 1
+
+/**
+ * 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
+ */
+#define UIP_LOGGING 0
+
+/**
+ * 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);
+
+/**
+ * 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.
+ *
+ * \hideinitializer
+ */
+#define UIP_LLH_LEN 14
+
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \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.
+ */
+#ifndef LITTLE_ENDIAN
+#define LITTLE_ENDIAN 3412
+#endif /* LITTLE_ENDIAN */
+#ifndef BIG_ENDIAN
+#define BIG_ENDIAN 1234
+#endif /* BIGE_ENDIAN */
+
+/**
+ * The byte order of the CPU architecture on which uIP is to be run.
+ *
+ * This option can be either BIG_ENDIAN (Motorola byte order) or
+ * LITTLE_ENDIAN (Intel byte order).
+ *
+ * \hideinitializer
+ */
+/*#ifndef BYTE_ORDER*/
+#define BYTE_ORDER BIG_ENDIAN
+/*#endif*/ /* BYTE_ORDER */
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \defgroup uipoptapp Appication 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 size of the application
+ * structure with the UIP_APPSTATE_SIZE macro.
+ *
+ * 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 {
+ u8_t state;
+ u16_t count;
+ char *dataptr;
+ char *script;
+};
+#define UIP_APPSTATE_SIZE (sizeof(struct httpd_state))
+ \endcode
+ */
+
+/**
+ * \var #define UIP_APPCALL
+ *
+ * The name of the application function that uIP should call in
+ * response to TCP/IP events.
+ *
+ */
+
+/**
+ * \var #define UIP_APPSTATE_SIZE
+ *
+ * The size of the application state that is to be stored in the
+ * uip_conn structure.
+ */
+/** @} */
+
+/* Include the header file for the application program that should be
+ used. If you don't use the example web server, you should change
+ this. */
+#include "httpd.h"
+
+
+#endif /* __UIPOPT_H__ */
--- a/board/infineon/easy50712/danube.c
+++ b/board/infineon/easy50712/danube.c
@@ -354,7 +354,7 @@ int do_http_upgrade(const unsigned char
}
/* write the image to the flash */
puts("http ugrade ...\n");
- sprintf(buf, "era ${kernel_addr} +0x%x; cp.b ${ram_addr} ${kernel_addr} 0x%x", size, size);
+ sprintf(buf, "era ${kernel_addr} +0x%lx; cp.b ${ram_addr} ${kernel_addr} 0x%lx", size, size);
return run_command(buf, 0);
}
--- a/common/main.c
+++ b/common/main.c
@@ -273,6 +273,10 @@ static __inline__ int abortboot(int boot
void main_loop (void)
{
+#ifdef CONFIG_CMD_HTTPD
+ int ret;
+#endif
+
#ifndef CONFIG_SYS_HUSH_PARSER
static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, };
int len;
@@ -403,12 +407,22 @@ void main_loop (void)
# endif
# ifndef CONFIG_SYS_HUSH_PARSER
- run_command (s, 0);
+ ret = run_command (s, 0);
# else
- parse_string_outer(s, FLAG_PARSE_SEMICOLON |
+ ret = parse_string_outer(s, FLAG_PARSE_SEMICOLON |
FLAG_EXIT_FROM_LOOP);
# endif
+# ifdef CONFIG_CMD_HTTPD
+ if (ret != 0) {
+ printf("Failed to execute bootcmd "
+ "(maybe invalid u-boot environment?), "
+ "starting httpd to update firmware...\n");
+ NetLoopHttpd();
+ }
+# endif
+
+
# ifdef CONFIG_AUTOBOOT_KEYED
disable_ctrlc(prev); /* restore Control C checking */
# endif
--- a/include/configs/easy50712.h
+++ b/include/configs/easy50712.h
@@ -114,4 +114,7 @@
#define CONFIG_CMD_HTTPD /* enable upgrade via HTTPD */
+#define CONFIG_IPADDR 192.168.0.119
+#define CONFIG_ETHADDR 00:01:02:03:04:05
+
#endif /* __CONFIG_H */
--- a/lib_mips/time.c
+++ b/lib_mips/time.c
@@ -29,6 +29,8 @@ static unsigned long timestamp;
/* how many counter cycles in a jiffy */
#define CYCLES_PER_JIFFY (CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ
+unsigned long ifx_get_cpuclk(void);
+
/*
* timer without interrupts
*/
--- a/net/httpd.c
+++ b/net/httpd.c
@@ -35,12 +35,14 @@ HttpdHandler (void)
}
}
+#if 0
static void
HttpdTimeout (void)
{
puts ("T ");
NetSetTimeout (TIMEOUT * 1000, HttpdTimeout);
}
+#endif
void
HttpdStart (void)
--- a/net/net.c
+++ b/net/net.c
@@ -1966,7 +1966,7 @@ NetSendHttpd(void)
void
NetReceiveHttpd(volatile uchar * inpkt, int len)
{
- memcpy(uip_buf, inpkt, len);
+ memcpy(uip_buf, (const void *)inpkt, len);
uip_len = len;
if(BUF->type == htons(UIP_ETHTYPE_IP)) {
uip_arp_ipin();
@@ -1989,6 +1989,7 @@ NetLoopHttpd(void)
unsigned long long tout = 0;
bd_t *bd = gd->bd;
unsigned short int ip[2];
+ struct uip_eth_addr eaddr;
#ifdef CONFIG_NET_MULTI
NetRestarted = 0;
@@ -2039,6 +2040,15 @@ restart:
eth_getenv_enetaddr("ethaddr", NetOurEther);
#endif
+ eaddr.addr[0] = NetOurEther[0];
+ eaddr.addr[1] = NetOurEther[1];
+ eaddr.addr[2] = NetOurEther[2];
+ eaddr.addr[3] = NetOurEther[3];
+ eaddr.addr[4] = NetOurEther[4];
+ eaddr.addr[5] = NetOurEther[5];
+
+ uip_setethaddr(eaddr);
+
NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
NetOurGatewayIP = getenv_IPaddr ("gatewayip");
NetOurSubnetMask= getenv_IPaddr ("netmask");
@@ -2072,6 +2082,14 @@ restart:
tout = t1;
}
}
+
+ if (ctrlc()) {
+ eth_halt();
+ puts ("\nAbort\n");
+ return (-1);
+ }
+
+
if(!httpd_upload_complete)
continue;
printf("Bytes transferred = %ld (%lx hex)\n",
--- a/net/uip-0.9/fsdata.c
+++ b/net/uip-0.9/fsdata.c
@@ -1,199 +1,108 @@
-static const char data_flashing_html[] = {
- /* /flashing.html */
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-
-static const char data_fail_html[] = {
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-
-static const char data_404_html[] = {
- /* /404.html */
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- 0x6c, 0x3e, };
-
-static const char data_index_html[] = {
- /* /index.html */
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- 0x3c, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
-
-static const char data_flash_html[] = {
- /* /flash.html */
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- 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
-
-const struct fsdata_file file_flashing_html[] = {{NULL, data_flashing_html, data_flashing_html + 15, sizeof(data_flashing_html) - 15}};
+static const char data_flashing_html[] =
+"HTTP/1.0 200 OK\n"
+"Server: uIP/0.9 (http://dunkels.com/adam/uip/)\n"
+"Content-type: text/html\n"
+"\n"
+"<html>\n"
+"\t<head>\n"
+"\t\t<title>\n"
+"\t\t\tFailsafe UI\n"
+"\t\t</title>\n"
+"\t</head>\n"
+"\t<body>\n"
+"\t\t<center><h1>Upgrading system...</h1></center>\n"
+"\t</body>\n"
+"</html>\n";
+
+static const char data_fail_html[] =
+"HTTP/1.0 200 OK\n"
+"Server: uIP/0.9 (http://dunkels.com/adam/uip/)\n"
+"Content-type: text/html\n"
+"\n"
+"<html>\n"
+"\t<head>\n"
+"\t\t<title>\n"
+"\t\t\tFailsafe UI\n"
+"\t\t</title>\n"
+"\t</head>\n"
+"\t<body>\n"
+"\t\t<h1>Flashing failed</h1>\n"
+"\t\tERROR - the image you uploaded failed to pass verification.<br>\n"
+"\t\tPlease make sure to use an official update provided by http://lantiq.com/\n"
+"\t</body>\n"
+"</html>\n";
+
+static const char data_404_html[] =
+"HTTP/1.0 404 File not found\n"
+"Server: uIP/0.9 (http://dunkels.com/adam/uip/)\n"
+"Content-type: text/html\n"
+"\n"
+"<html>\n"
+"\t<head>\n"
+"\t\t<title>\n"
+"\t\t\tFailsafe UI\n"
+"\t\t</title>\n"
+"\t</head>\n"
+"\t<body>\n"
+"\t\t<center><h1>404 - file not found</h1></center>\n"
+"\t</body>\n"
+"</html>\n";
+
+static const char data_index_html[] =
+"HTTP/1.0 200 OK\n"
+"Server: uIP/0.9 (http://dunkels.com/adam/uip/)\n"
+"Content-type: text/html\n"
+"\n"
+"<html>\n"
+"\t<head>\n"
+"\t\t<title>\n"
+"\t\t\tFailsafe UI\n"
+"\t\t</title>\n"
+"\t</head>\n"
+"\t<body>\n"
+"\t\t<h1>Failsafe UI</h1>\n"
+"\t\t<form method=\"post\" enctype=\"multipart/form-data\">\n"
+"\t\t\t<input type=file name=firmware>\n"
+"\t\t\t<input type=submit>\n"
+"\t\t</form>\n"
+"\t</body>\n"
+"</html>\n";
+
+static const char data_flash_html[] =
+"HTTP/1.0 200 OK\n"
+"Server: uIP/0.9 (http://dunkels.com/adam/uip/)\n"
+"Content-type: text/html\n"
+"\n"
+"<html>\n"
+"\t<head>\n"
+"\t\t<title>\n"
+"\t\t\tFailsafe UI\n"
+"\t\t</title>\n"
+"\t</head>\n"
+"\t<body>\n"
+"\t\t<h1>Flashing...</h1>\n"
+"\t\tThe system is now trying to flash. If there is a problem, the LEDs will "
+"start to blink.<br>\n"
+"\n"
+"\t\tAfter a successful update the box will reboot\n"
+"\t</body>\n"
+"</html>\n";
+
+const struct fsdata_file file_flashing_html[] =
+{{NULL, "/flashing.html", data_flashing_html, sizeof(data_flashing_html)}};
+
+const struct fsdata_file file_fail_html[] =
+{{file_flashing_html, "/fail.html", data_fail_html, sizeof(data_fail_html)}};
-const struct fsdata_file file_fail_html[] = {{file_flashing_html, data_fail_html, data_fail_html + 11, sizeof(data_fail_html) - 11}};
+const struct fsdata_file file_404_html[] =
+{{file_fail_html, "/404.html", data_404_html, sizeof(data_404_html)}};
-const struct fsdata_file file_404_html[] = {{file_fail_html, data_404_html, data_404_html + 10, sizeof(data_404_html) - 10}};
+const struct fsdata_file file_index_html[] =
+{{file_404_html, "/index.html", data_index_html, sizeof(data_index_html)}};
-const struct fsdata_file file_index_html[] = {{file_404_html, data_index_html, data_index_html + 12, sizeof(data_index_html) - 12}};
-
-const struct fsdata_file file_flash_html[] = {{file_index_html, data_flash_html, data_flash_html + 12, sizeof(data_flash_html) - 12}};
+const struct fsdata_file file_flash_html[] =
+{{file_index_html, "/flash.html", data_flash_html, sizeof(data_flash_html)}};
#define FS_ROOT file_flash_html
-#define FS_NUMFILES 5
\ No newline at end of file
+#define FS_NUMFILES 5
--- a/net/uip-0.9/httpd.c
+++ b/net/uip-0.9/httpd.c
@@ -130,7 +130,7 @@ httpd_appcall(void)
if(!fs_open((const char *)&uip_appdata[4], &fsfile))
{
PRINTLN("couldn't open file");
- fs_open(file_index_html.name, &fsfile);
+ fs_open(file_404_html.name, &fsfile);
}
}
hs->script = 0;
@@ -141,7 +141,7 @@ httpd_appcall(void)
if(hs->state == HTTP_FIRMWARE)
{
unsigned char *start = (unsigned char*)uip_appdata;
- char *clen = strstr(start, "Content-Length:");
+ char *clen = strstr((char *)start, "Content-Length:");
int len = 0;
unsigned char *next, *end;
unsigned char *boundary_start;
@@ -150,14 +150,14 @@ httpd_appcall(void)
if(clen)
{
clen += sizeof("Content-Length:");
- next = strstr(clen, eol);
+ next = (unsigned char *)strstr(clen, eol);
if(next)
{
len = atoi(clen);
next++;
printf("expecting %d bytes\n", len);
upload_data = httpd_upload_data = (unsigned char *)do_http_tmp_address();
- printf("received data will be stored at 0x%08X\n", upload_data);
+ printf("received data will be stored at %p\n", upload_data);
if(!upload_data)
{
printf("failed to allocate memory\n");
@@ -174,14 +174,14 @@ httpd_appcall(void)
uip_close();
return;
}
- boundary_start = strstr(next, "---");
+ boundary_start = (unsigned char *)strstr((char *)next, "---");
if(!boundary_start)
{
uip_close();
return;
}
- end = strstr(boundary_start, eol);
- if(!eol)
+ end = (unsigned char *)strstr((char *)boundary_start, eol);
+ if(!end)
{
uip_close();
return;
@@ -189,13 +189,13 @@ httpd_appcall(void)
boundary_len = end - boundary_start;
memcpy(boundary, boundary_start, boundary_len);
boundary[boundary_len] = 0;
- next = strstr(boundary_start, "name=\"firmware\";");
+ next = (unsigned char *)strstr((char *)boundary_start, "name=\"firmware\";");
if(!next)
{
uip_close();
return;
}
- next = strstr(next, eol2);
+ next = (unsigned char *)strstr((char *)next, eol2);
if(!next)
{
printf("could not find start of data\n");
@@ -259,7 +259,6 @@ httpd_appcall(void)
{
if(upload_running)
{
- int i;
httpd_upload_complete = 1;
// for(i = 0; i < hs->upload_total; i++)
// printf("%c", httpd_upload_data[i]);
@@ -267,7 +266,7 @@ httpd_appcall(void)
uip_close();
}
}
- uip_send(hs->dataptr, hs->count);
+ uip_send((unsigned char *)hs->dataptr, hs->count);
}
break;
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