diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-08-08 14:42:07 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-08-08 14:42:07 +0300 |
| commit | a6163888f3c56123b1db313743c6147ba498732c (patch) | |
| tree | ff7d15d991d1d09ba6cbc0cec80924f57445bfdd /third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP | |
| parent | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (diff) | |
Add third_party libs
Diffstat (limited to 'third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP')
24 files changed, 7641 insertions, 0 deletions
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/Makefile.include b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/Makefile.include new file mode 100644 index 0000000..43ba247 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/Makefile.include @@ -0,0 +1,47 @@ +
+
+ifdef APPS
+ APPDIRS = $(foreach APP, $(APPS), ../apps/$(APP))
+ -include $(foreach APP, $(APPS), ../apps/$(APP)/Makefile.$(APP))
+ CFLAGS += $(addprefix -I../apps/,$(APPS))
+endif
+
+ifndef CCDEP
+ CCDEP = $(CC)
+endif
+ifndef CCDEPCFLAGS
+ CCDEPCFLAGS = $(CFLAGS)
+endif
+ifndef OBJECTDIR
+ OBJECTDIR = obj
+endif
+
+ifeq (${wildcard $(OBJECTDIR)},)
+ DUMMY := ${shell mkdir $(OBJECTDIR)}
+endif
+
+
+vpath %.c . ../uip ../lib $(APPDIRS)
+
+$(OBJECTDIR)/%.o: %.c
+ $(CC) $(CFLAGS) -c $< -o $@
+
+$(OBJECTDIR)/%.d: %.c
+ @set -e; rm -f $@; \
+ $(CCDEP) -MM $(CCDEPCFLAGS) $< > $@.$$$$; \
+ sed 's,\($*\)\.o[ :]*,$(OBJECTDIR)/\1.o $@ : ,g' < $@.$$$$ > $@; \
+ rm -f $@.$$$$
+
+UIP_SOURCES=uip.c uip_arp.c uiplib.c psock.c timer.c uip-neighbor.c
+
+
+ifneq ($(MAKECMDGOALS),clean)
+-include $(addprefix $(OBJECTDIR)/,$(UIP_SOURCES:.c=.d) \
+ $(APP_SOURCES:.c=.d))
+endif
+
+uip.a: ${addprefix $(OBJECTDIR)/, $(UIP_SOURCES:.c=.o)}
+ $(AR) rcf $@ $^
+
+apps.a: ${addprefix $(OBJECTDIR)/, $(APP_SOURCES:.c=.o)}
+ $(AR) rcf $@ $^
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/clock-arch.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/clock-arch.h new file mode 100644 index 0000000..cde657b --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/clock-arch.h @@ -0,0 +1,42 @@ +/*
+ * Copyright (c) 2006, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * $Id: clock-arch.h,v 1.2 2006/06/12 08:00:31 adam Exp $
+ */
+
+#ifndef __CLOCK_ARCH_H__
+#define __CLOCK_ARCH_H__
+
+#include "FreeRTOS.h"
+
+typedef unsigned long clock_time_t;
+#define CLOCK_CONF_SECOND configTICK_RATE_HZ
+
+#endif /* __CLOCK_ARCH_H__ */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/clock.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/clock.h new file mode 100644 index 0000000..dae6874 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/clock.h @@ -0,0 +1,88 @@ +/**
+ * \defgroup clock Clock interface
+ *
+ * The clock interface is the interface between the \ref timer "timer library"
+ * and the platform specific clock functionality. The clock
+ * interface must be implemented for each platform that uses the \ref
+ * timer "timer library".
+ *
+ * The clock interface does only one this: it measures time. The clock
+ * interface provides a macro, CLOCK_SECOND, which corresponds to one
+ * second of system time.
+ *
+ * \sa \ref timer "Timer library"
+ *
+ * @{
+ */
+
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: clock.h,v 1.3 2006/06/11 21:46:39 adam Exp $
+ */
+#ifndef __CLOCK_H__
+#define __CLOCK_H__
+
+#include "clock-arch.h"
+
+/**
+ * Initialize the clock library.
+ *
+ * This function initializes the clock library and should be called
+ * from the main() function of the system.
+ *
+ */
+void clock_init(void);
+
+/**
+ * Get the current clock time.
+ *
+ * This function returns the current system clock time.
+ *
+ * \return The current clock time, measured in system ticks.
+ */
+clock_time_t clock_time(void);
+
+/**
+ * A second, measured in system clock time.
+ *
+ * \hideinitializer
+ */
+#ifdef CLOCK_CONF_SECOND
+#define CLOCK_SECOND CLOCK_CONF_SECOND
+#else
+#define CLOCK_SECOND (clock_time_t)32
+#endif
+
+#endif /* __CLOCK_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc-addrlabels.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc-addrlabels.h new file mode 100644 index 0000000..9dff03d --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc-addrlabels.h @@ -0,0 +1,83 @@ +/*
+ * Copyright (c) 2004-2005, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: lc-addrlabels.h,v 1.3 2006/06/12 08:00:30 adam Exp $
+ */
+
+/**
+ * \addtogroup lc
+ * @{
+ */
+
+/**
+ * \file
+ * Implementation of local continuations based on the "Labels as
+ * values" feature of gcc
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ * This implementation of local continuations is based on a special
+ * feature of the GCC C compiler called "labels as values". This
+ * feature allows assigning pointers with the address of the code
+ * corresponding to a particular C label.
+ *
+ * For more information, see the GCC documentation:
+ * http://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html
+ *
+ * Thanks to dividuum for finding the nice local scope label
+ * implementation.
+ */
+
+#ifndef __LC_ADDRLABELS_H__
+#define __LC_ADDRLABELS_H__
+
+/** \hideinitializer */
+typedef void * lc_t;
+
+#define LC_INIT(s) s = NULL
+
+
+#define LC_RESUME(s) \
+ do { \
+ if(s != NULL) { \
+ goto *s; \
+ } \
+ } while(0)
+
+#define LC_SET(s) \
+ do { ({ __label__ resume; resume: (s) = &&resume; }); }while(0)
+
+#define LC_END(s)
+
+#endif /* __LC_ADDRLABELS_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc-switch.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc-switch.h new file mode 100644 index 0000000..17c8811 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc-switch.h @@ -0,0 +1,76 @@ +/*
+ * Copyright (c) 2004-2005, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: lc-switch.h,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+
+/**
+ * \addtogroup lc
+ * @{
+ */
+
+/**
+ * \file
+ * Implementation of local continuations based on switch() statment
+ * \author Adam Dunkels <adam@sics.se>
+ *
+ * This implementation of local continuations uses the C switch()
+ * statement to resume execution of a function somewhere inside the
+ * function's body. The implementation is based on the fact that
+ * switch() statements are able to jump directly into the bodies of
+ * control structures such as if() or while() statmenets.
+ *
+ * This implementation borrows heavily from Simon Tatham's coroutines
+ * implementation in C:
+ * http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
+ */
+
+#ifndef __LC_SWITCH_H__
+#define __LC_SWTICH_H__
+
+/* WARNING! lc implementation using switch() does not work if an
+ LC_SET() is done within another switch() statement! */
+
+/** \hideinitializer */
+typedef unsigned short lc_t;
+
+#define LC_INIT(s) s = 0;
+
+#define LC_RESUME(s) switch(s) { case 0:
+
+#define LC_SET(s) s = __LINE__; case __LINE__:
+
+#define LC_END(s) }
+
+#endif /* __LC_SWITCH_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc.h new file mode 100644 index 0000000..3ad83cd --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/lc.h @@ -0,0 +1,131 @@ +/*
+ * Copyright (c) 2004-2005, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: lc.h,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+
+/**
+ * \addtogroup pt
+ * @{
+ */
+
+/**
+ * \defgroup lc Local continuations
+ * @{
+ *
+ * Local continuations form the basis for implementing protothreads. A
+ * local continuation can be <i>set</i> in a specific function to
+ * capture the state of the function. After a local continuation has
+ * been set can be <i>resumed</i> in order to restore the state of the
+ * function at the point where the local continuation was set.
+ *
+ *
+ */
+
+/**
+ * \file lc.h
+ * Local continuations
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#ifdef DOXYGEN
+/**
+ * Initialize a local continuation.
+ *
+ * This operation initializes the local continuation, thereby
+ * unsetting any previously set continuation state.
+ *
+ * \hideinitializer
+ */
+#define LC_INIT(lc)
+
+/**
+ * Set a local continuation.
+ *
+ * The set operation saves the state of the function at the point
+ * where the operation is executed. As far as the set operation is
+ * concerned, the state of the function does <b>not</b> include the
+ * call-stack or local (automatic) variables, but only the program
+ * counter and such CPU registers that needs to be saved.
+ *
+ * \hideinitializer
+ */
+#define LC_SET(lc)
+
+/**
+ * Resume a local continuation.
+ *
+ * The resume operation resumes a previously set local continuation, thus
+ * restoring the state in which the function was when the local
+ * continuation was set. If the local continuation has not been
+ * previously set, the resume operation does nothing.
+ *
+ * \hideinitializer
+ */
+#define LC_RESUME(lc)
+
+/**
+ * Mark the end of local continuation usage.
+ *
+ * The end operation signifies that local continuations should not be
+ * used any more in the function. This operation is not needed for
+ * most implementations of local continuation, but is required by a
+ * few implementations.
+ *
+ * \hideinitializer
+ */
+#define LC_END(lc)
+
+/**
+ * \var typedef lc_t;
+ *
+ * The local continuation type.
+ *
+ * \hideinitializer
+ */
+#endif /* DOXYGEN */
+
+#ifndef __LC_H__
+#define __LC_H__
+
+#ifdef LC_CONF_INCLUDE
+#include LC_CONF_INCLUDE
+#else
+#include "lc-switch.h"
+#endif /* LC_CONF_INCLUDE */
+
+#endif /* __LC_H__ */
+
+/** @} */
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/psock.c b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/psock.c new file mode 100644 index 0000000..d29ef01 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/psock.c @@ -0,0 +1,374 @@ +/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: psock.c,v 1.1 2007/01/04 11:06:40 adamdunkels Exp $
+ */
+#include <stdio.h>
+#include <string.h>
+
+#include "uipopt.h"
+#include "psock.h"
+#include "uip.h"
+
+#define STATE_NONE 0
+#define STATE_ACKED 1
+#define STATE_READ 2
+#define STATE_BLOCKED_NEWDATA 3
+#define STATE_BLOCKED_CLOSE 4
+#define STATE_BLOCKED_SEND 5
+#define STATE_DATA_SENT 6
+
+/*
+ * Return value of the buffering functions that indicates that a
+ * buffer was not filled by incoming data.
+ *
+ */
+#define BUF_NOT_FULL 0
+#define BUF_NOT_FOUND 0
+
+/*
+ * Return value of the buffering functions that indicates that a
+ * buffer was completely filled by incoming data.
+ *
+ */
+#define BUF_FULL 1
+
+/*
+ * Return value of the buffering functions that indicates that an
+ * end-marker byte was found.
+ *
+ */
+#define BUF_FOUND 2
+
+/*---------------------------------------------------------------------------*/
+static void buf_setup( struct psock_buf *buf, u8_t *bufptr, u16_t bufsize )
+{
+ buf->ptr = bufptr;
+ buf->left = bufsize;
+}
+
+/*---------------------------------------------------------------------------*/
+static u8_t buf_bufdata( struct psock_buf *buf, u16_t len, u8_t **dataptr, u16_t *datalen )
+{
+ ( void ) len;
+
+ if( *datalen < buf->left )
+ {
+ memcpy( buf->ptr, *dataptr, *datalen );
+ buf->ptr += *datalen;
+ buf->left -= *datalen;
+ *dataptr += *datalen;
+ *datalen = 0;
+ return BUF_NOT_FULL;
+ }
+ else if( *datalen == buf->left )
+ {
+ memcpy( buf->ptr, *dataptr, *datalen );
+ buf->ptr += *datalen;
+ buf->left = 0;
+ *dataptr += *datalen;
+ *datalen = 0;
+ return BUF_FULL;
+ }
+ else
+ {
+ memcpy( buf->ptr, *dataptr, buf->left );
+ buf->ptr += buf->left;
+ *datalen -= buf->left;
+ *dataptr += buf->left;
+ buf->left = 0;
+ return BUF_FULL;
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+static u8_t buf_bufto( register struct psock_buf *buf, u8_t endmarker, register u8_t **dataptr, register u16_t *datalen )
+{
+ u8_t c;
+ while( buf->left > 0 && *datalen > 0 )
+ {
+ c = *buf->ptr = **dataptr;
+ ++ *dataptr;
+ ++buf->ptr;
+ -- *datalen;
+ --buf->left;
+
+ if( c == endmarker )
+ {
+ return BUF_FOUND;
+ }
+ }
+
+ if( *datalen == 0 )
+ {
+ return BUF_NOT_FOUND;
+ }
+
+ while( *datalen > 0 )
+ {
+ c = **dataptr;
+ -- *datalen;
+ ++ *dataptr;
+
+ if( c == endmarker )
+ {
+ return BUF_FOUND | BUF_FULL;
+ }
+ }
+
+ return BUF_FULL;
+}
+
+/*---------------------------------------------------------------------------*/
+static char send_data( register struct psock *s )
+{
+ if( s->state != STATE_DATA_SENT || uip_rexmit() )
+ {
+ if( s->sendlen > uip_mss() )
+ {
+ uip_send( s->sendptr, uip_mss() );
+ }
+ else
+ {
+ uip_send( s->sendptr, s->sendlen );
+ }
+
+ s->state = STATE_DATA_SENT;
+ return 1;
+ }
+
+ return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+static char data_acked( register struct psock *s )
+{
+ if( s->state == STATE_DATA_SENT && uip_acked() )
+ {
+ if( s->sendlen > uip_mss() )
+ {
+ s->sendlen -= uip_mss();
+ s->sendptr += uip_mss();
+ }
+ else
+ {
+ s->sendptr += s->sendlen;
+ s->sendlen = 0;
+ }
+
+ s->state = STATE_ACKED;
+ return 1;
+ }
+
+ return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+PT_THREAD( psock_send ( register struct psock *s, const char *buf, unsigned int len ) )
+{
+ PT_BEGIN( &s->psockpt );
+
+ /* If there is no data to send, we exit immediately. */
+ if( len == 0 )
+ {
+ PT_EXIT( &s->psockpt );
+ }
+
+ /* Save the length of and a pointer to the data that is to be
+ sent. */
+ s->sendptr = ( u8_t * ) buf;
+ s->sendlen = len;
+
+ s->state = STATE_NONE;
+
+ /* We loop here until all data is sent. The s->sendlen variable is
+ updated by the data_sent() function. */
+ while( s->sendlen > 0 )
+ {
+ /*
+ * The condition for this PT_WAIT_UNTIL is a little tricky: the
+ * protothread will wait here until all data has been acknowledged
+ * (data_acked() returns true) and until all data has been sent
+ * (send_data() returns true). The two functions data_acked() and
+ * send_data() must be called in succession to ensure that all
+ * data is sent. Therefore the & operator is used instead of the
+ * && operator, which would cause only the data_acked() function
+ * to be called when it returns false.
+ */
+ PT_WAIT_UNTIL( &s->psockpt, data_acked(s) & send_data(s) );
+ }
+
+ s->state = STATE_NONE;
+
+ PT_END( &s->psockpt );
+}
+
+/*---------------------------------------------------------------------------*/
+PT_THREAD( psock_generator_send ( register struct psock *s, unsigned short ( *generate ) ( void * ), void *arg ) )
+{
+ PT_BEGIN( &s->psockpt );
+
+ /* Ensure that there is a generator function to call. */
+ if( generate == NULL )
+ {
+ PT_EXIT( &s->psockpt );
+ }
+
+ /* Call the generator function to generate the data in the
+ uip_appdata buffer. */
+ s->sendlen = generate( arg );
+ s->sendptr = uip_appdata;
+
+ s->state = STATE_NONE;
+ do
+ {
+ /* Call the generator function again if we are called to perform a
+ retransmission. */
+ if( uip_rexmit() )
+ {
+ generate( arg );
+ }
+
+ /* Wait until all data is sent and acknowledged. */
+ PT_WAIT_UNTIL( &s->psockpt, data_acked(s) & send_data(s) );
+ } while( s->sendlen > 0 );
+
+ s->state = STATE_NONE;
+
+ PT_END( &s->psockpt );
+}
+
+/*---------------------------------------------------------------------------*/
+u16_t psock_datalen( struct psock *psock )
+{
+ return psock->bufsize - psock->buf.left;
+}
+
+/*---------------------------------------------------------------------------*/
+char psock_newdata( struct psock *s )
+{
+ if( s->readlen > 0 )
+ {
+ /* There is data in the uip_appdata buffer that has not yet been
+ read with the PSOCK_READ functions. */
+ return 1;
+ }
+ else if( s->state == STATE_READ )
+ {
+ /* All data in uip_appdata buffer already consumed. */
+ s->state = STATE_BLOCKED_NEWDATA;
+ return 0;
+ }
+ else if( uip_newdata() )
+ {
+ /* There is new data that has not been consumed. */
+ return 1;
+ }
+ else
+ {
+ /* There is no new data. */
+ return 0;
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+PT_THREAD( psock_readto ( register struct psock *psock, unsigned char c ) )
+{
+ PT_BEGIN( &psock->psockpt );
+
+ buf_setup( &psock->buf, ( u8_t * ) psock->bufptr, psock->bufsize );
+
+ /* XXX: Should add buf_checkmarker() before do{} loop, if
+ incoming data has been handled while waiting for a write. */
+ do
+ {
+ if( psock->readlen == 0 )
+ {
+ PT_WAIT_UNTIL( &psock->psockpt, psock_newdata(psock) );
+ psock->state = STATE_READ;
+ psock->readptr = ( u8_t * ) uip_appdata;
+ psock->readlen = uip_datalen();
+ }
+ } while( (buf_bufto(&psock->buf, c, &psock->readptr, &psock->readlen) & BUF_FOUND) == 0 );
+
+ if( psock_datalen(psock) == 0 )
+ {
+ psock->state = STATE_NONE;
+ PT_RESTART( &psock->psockpt );
+ }
+
+ PT_END( &psock->psockpt );
+}
+
+/*---------------------------------------------------------------------------*/
+PT_THREAD( psock_readbuf ( register struct psock *psock ) )
+{
+ PT_BEGIN( &psock->psockpt );
+
+ buf_setup( &psock->buf, ( u8_t * ) psock->bufptr, psock->bufsize );
+
+ /* XXX: Should add buf_checkmarker() before do{} loop, if
+ incoming data has been handled while waiting for a write. */
+ do
+ {
+ if( psock->readlen == 0 )
+ {
+ PT_WAIT_UNTIL( &psock->psockpt, psock_newdata(psock) );
+ printf( "Waited for newdata\n" );
+ psock->state = STATE_READ;
+ psock->readptr = ( u8_t * ) uip_appdata;
+ psock->readlen = uip_datalen();
+ }
+ } while( buf_bufdata(&psock->buf, psock->bufsize, &psock->readptr, &psock->readlen) != BUF_FULL );
+
+ if( psock_datalen(psock) == 0 )
+ {
+ psock->state = STATE_NONE;
+ PT_RESTART( &psock->psockpt );
+ }
+
+ PT_END( &psock->psockpt );
+}
+
+/*---------------------------------------------------------------------------*/
+void psock_init( register struct psock *psock, char *buffer, unsigned int buffersize )
+{
+ psock->state = STATE_NONE;
+ psock->readlen = 0;
+ psock->bufptr = buffer;
+ psock->bufsize = buffersize;
+ buf_setup( &psock->buf, ( u8_t * ) buffer, buffersize );
+ PT_INIT( &psock->pt );
+ PT_INIT( &psock->psockpt );
+}
+
+/*---------------------------------------------------------------------------*/
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/psock.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/psock.h new file mode 100644 index 0000000..8d41258 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/psock.h @@ -0,0 +1,380 @@ +/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: psock.h,v 1.3 2006/06/12 08:00:30 adam Exp $
+ */
+
+/**
+ * \defgroup psock Protosockets library
+ * @{
+ *
+ * The protosocket library provides an interface to the uIP stack that is
+ * similar to the traditional BSD socket interface. Unlike programs
+ * written for the ordinary uIP event-driven interface, programs
+ * written with the protosocket library are executed in a sequential
+ * fashion and does not have to be implemented as explicit state
+ * machines.
+ *
+ * Protosockets only work with TCP connections.
+ *
+ * The protosocket library uses \ref pt protothreads to provide
+ * sequential control flow. This makes the protosockets lightweight in
+ * terms of memory, but also means that protosockets inherits the
+ * functional limitations of protothreads. Each protosocket lives only
+ * within a single function. Automatic variables (stack variables) are
+ * not retained across a protosocket library function call.
+ *
+ * \note Because the protosocket library uses protothreads, local
+ * variables will not always be saved across a call to a protosocket
+ * library function. It is therefore advised that local variables are
+ * used with extreme care.
+ *
+ * The protosocket library provides functions for sending data without
+ * having to deal with retransmissions and acknowledgements, as well
+ * as functions for reading data without having to deal with data
+ * being split across more than one TCP segment.
+ *
+ * Because each protosocket runs as a protothread, the protosocket has to be
+ * started with a call to PSOCK_BEGIN() at the start of the function
+ * in which the protosocket is used. Similarly, the protosocket protothread can
+ * be terminated by a call to PSOCK_EXIT().
+ *
+ */
+
+/**
+ * \file
+ * Protosocket library header file
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#ifndef __PSOCK_H__
+#define __PSOCK_H__
+
+#include "uipopt.h"
+#include "pt.h"
+
+ /*
+ * The structure that holds the state of a buffer.
+ *
+ * This structure holds the state of a uIP buffer. The structure has
+ * no user-visible elements, but is used through the functions
+ * provided by the library.
+ *
+ */
+struct psock_buf {
+ u8_t *ptr;
+ unsigned short left;
+};
+
+/**
+ * The representation of a protosocket.
+ *
+ * The protosocket structrure is an opaque structure with no user-visible
+ * elements.
+ */
+struct psock {
+ struct pt pt, psockpt; /* Protothreads - one that's using the psock
+ functions, and one that runs inside the
+ psock functions. */
+ const u8_t *sendptr; /* Pointer to the next data to be sent. */
+ u8_t *readptr; /* Pointer to the next data to be read. */
+
+ char *bufptr; /* Pointer to the buffer used for buffering
+ incoming data. */
+
+ u16_t sendlen; /* The number of bytes left to be sent. */
+ u16_t readlen; /* The number of bytes left to be read. */
+
+ struct psock_buf buf; /* The structure holding the state of the
+ input buffer. */
+ unsigned int bufsize; /* The size of the input buffer. */
+
+ unsigned char state; /* The state of the protosocket. */
+};
+
+void psock_init(struct psock *psock, char *buffer, unsigned int buffersize);
+/**
+ * Initialize a protosocket.
+ *
+ * This macro initializes a protosocket and must be called before the
+ * protosocket is used. The initialization also specifies the input buffer
+ * for the protosocket.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket to be
+ * initialized
+ *
+ * \param buffer (char *) A pointer to the input buffer for the
+ * protosocket.
+ *
+ * \param buffersize (unsigned int) The size of the input buffer.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_INIT(psock, buffer, buffersize) \
+ psock_init(psock, buffer, buffersize)
+
+/**
+ * Start the protosocket protothread in a function.
+ *
+ * This macro starts the protothread associated with the protosocket and
+ * must come before other protosocket calls in the function it is used.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket to be
+ * started.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_BEGIN(psock) PT_BEGIN(&((psock)->pt))
+
+PT_THREAD(psock_send(struct psock *psock, const char *buf, unsigned int len));
+/**
+ * Send data.
+ *
+ * This macro sends data over a protosocket. The protosocket protothread blocks
+ * until all data has been sent and is known to have been received by
+ * the remote end of the TCP connection.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket over which
+ * data is to be sent.
+ *
+ * \param data (char *) A pointer to the data that is to be sent.
+ *
+ * \param datalen (unsigned int) The length of the data that is to be
+ * sent.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_SEND(psock, data, datalen) \
+ PT_WAIT_THREAD(&((psock)->pt), psock_send(psock, data, datalen))
+
+/**
+ * \brief Send a null-terminated string.
+ * \param psock Pointer to the protosocket.
+ * \param str The string to be sent.
+ *
+ * This function sends a null-terminated string over the
+ * protosocket.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_SEND_STR(psock, str) \
+ PT_WAIT_THREAD(&((psock)->pt), psock_send(psock, str, strlen(str)))
+
+PT_THREAD(psock_generator_send(struct psock *psock,
+ unsigned short (*f)(void *), void *arg));
+
+/**
+ * \brief Generate data with a function and send it
+ * \param psock Pointer to the protosocket.
+ * \param generator Pointer to the generator function
+ * \param arg Argument to the generator function
+ *
+ * This function generates data and sends it over the
+ * protosocket. This can be used to dynamically generate
+ * data for a transmission, instead of generating the data
+ * in a buffer beforehand. This function reduces the need for
+ * buffer memory. The generator function is implemented by
+ * the application, and a pointer to the function is given
+ * as an argument with the call to PSOCK_GENERATOR_SEND().
+ *
+ * The generator function should place the generated data
+ * directly in the uip_appdata buffer, and return the
+ * length of the generated data. The generator function is
+ * called by the protosocket layer when the data first is
+ * sent, and once for every retransmission that is needed.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_GENERATOR_SEND(psock, generator, arg) \
+ PT_WAIT_THREAD(&((psock)->pt), \
+ psock_generator_send(psock, generator, arg))
+
+
+/**
+ * Close a protosocket.
+ *
+ * This macro closes a protosocket and can only be called from within the
+ * protothread in which the protosocket lives.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket that is to
+ * be closed.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_CLOSE(psock) uip_close()
+
+PT_THREAD(psock_readbuf(struct psock *psock));
+/**
+ * Read data until the buffer is full.
+ *
+ * This macro will block waiting for data and read the data into the
+ * input buffer specified with the call to PSOCK_INIT(). Data is read
+ * until the buffer is full..
+ *
+ * \param psock (struct psock *) A pointer to the protosocket from which
+ * data should be read.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_READBUF(psock) \
+ PT_WAIT_THREAD(&((psock)->pt), psock_readbuf(psock))
+
+PT_THREAD(psock_readto(struct psock *psock, unsigned char c));
+/**
+ * Read data up to a specified character.
+ *
+ * This macro will block waiting for data and read the data into the
+ * input buffer specified with the call to PSOCK_INIT(). Data is only
+ * read until the specifieed character appears in the data stream.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket from which
+ * data should be read.
+ *
+ * \param c (char) The character at which to stop reading.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_READTO(psock, c) \
+ PT_WAIT_THREAD(&((psock)->pt), psock_readto(psock, c))
+
+/**
+ * The length of the data that was previously read.
+ *
+ * This macro returns the length of the data that was previously read
+ * using PSOCK_READTO() or PSOCK_READ().
+ *
+ * \param psock (struct psock *) A pointer to the protosocket holding the data.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_DATALEN(psock) psock_datalen(psock)
+
+u16_t psock_datalen(struct psock *psock);
+
+/**
+ * Exit the protosocket's protothread.
+ *
+ * This macro terminates the protothread of the protosocket and should
+ * almost always be used in conjunction with PSOCK_CLOSE().
+ *
+ * \sa PSOCK_CLOSE_EXIT()
+ *
+ * \param psock (struct psock *) A pointer to the protosocket.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_EXIT(psock) PT_EXIT(&((psock)->pt))
+
+/**
+ * Close a protosocket and exit the protosocket's protothread.
+ *
+ * This macro closes a protosocket and exits the protosocket's protothread.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_CLOSE_EXIT(psock) \
+ do { \
+ PSOCK_CLOSE(psock); \
+ PSOCK_EXIT(psock); \
+ } while(0)
+
+/**
+ * Declare the end of a protosocket's protothread.
+ *
+ * This macro is used for declaring that the protosocket's protothread
+ * ends. It must always be used together with a matching PSOCK_BEGIN()
+ * macro.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_END(psock) PT_END(&((psock)->pt))
+
+char psock_newdata(struct psock *s);
+
+/**
+ * Check if new data has arrived on a protosocket.
+ *
+ * This macro is used in conjunction with the PSOCK_WAIT_UNTIL()
+ * macro to check if data has arrived on a protosocket.
+ *
+ * \param psock (struct psock *) A pointer to the protosocket.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_NEWDATA(psock) psock_newdata(psock)
+
+/**
+ * Wait until a condition is true.
+ *
+ * This macro blocks the protothread until the specified condition is
+ * true. The macro PSOCK_NEWDATA() can be used to check if new data
+ * arrives when the protosocket is waiting.
+ *
+ * Typically, this macro is used as follows:
+ *
+ \code
+ PT_THREAD(thread(struct psock *s, struct timer *t))
+ {
+ PSOCK_BEGIN(s);
+
+ PSOCK_WAIT_UNTIL(s, PSOCK_NEWADATA(s) || timer_expired(t));
+
+ if(PSOCK_NEWDATA(s)) {
+ PSOCK_READTO(s, '\n');
+ } else {
+ handle_timed_out(s);
+ }
+
+ PSOCK_END(s);
+ }
+ \endcode
+ *
+ * \param psock (struct psock *) A pointer to the protosocket.
+ * \param condition The condition to wait for.
+ *
+ * \hideinitializer
+ */
+#define PSOCK_WAIT_UNTIL(psock, condition) \
+ PT_WAIT_UNTIL(&((psock)->pt), (condition));
+
+#define PSOCK_WAIT_THREAD(psock, condition) \
+ PT_WAIT_THREAD(&((psock)->pt), (condition))
+
+#endif /* __PSOCK_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/pt.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/pt.h new file mode 100644 index 0000000..00ddd44 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/pt.h @@ -0,0 +1,323 @@ +/*
+ * Copyright (c) 2004-2005, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: pt.h,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+
+/**
+ * \addtogroup pt
+ * @{
+ */
+
+/**
+ * \file
+ * Protothreads implementation.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#ifndef __PT_H__
+#define __PT_H__
+
+#include "lc.h"
+
+struct pt {
+ lc_t lc;
+};
+
+#define PT_WAITING 0
+#define PT_EXITED 1
+#define PT_ENDED 2
+#define PT_YIELDED 3
+
+/**
+ * \name Initialization
+ * @{
+ */
+
+/**
+ * Initialize a protothread.
+ *
+ * Initializes a protothread. Initialization must be done prior to
+ * starting to execute the protothread.
+ *
+ * \param pt A pointer to the protothread control structure.
+ *
+ * \sa PT_SPAWN()
+ *
+ * \hideinitializer
+ */
+#define PT_INIT(pt) LC_INIT((pt)->lc)
+
+/** @} */
+
+/**
+ * \name Declaration and definition
+ * @{
+ */
+
+/**
+ * Declaration of a protothread.
+ *
+ * This macro is used to declare a protothread. All protothreads must
+ * be declared with this macro.
+ *
+ * \param name_args The name and arguments of the C function
+ * implementing the protothread.
+ *
+ * \hideinitializer
+ */
+#define PT_THREAD(name_args) char name_args
+
+/**
+ * Declare the start of a protothread inside the C function
+ * implementing the protothread.
+ *
+ * This macro is used to declare the starting point of a
+ * protothread. It should be placed at the start of the function in
+ * which the protothread runs. All C statements above the PT_BEGIN()
+ * invokation will be executed each time the protothread is scheduled.
+ *
+ * \param pt A pointer to the protothread control structure.
+ *
+ * \hideinitializer
+ */
+#define PT_BEGIN(pt) { char PT_YIELD_FLAG = 1; LC_RESUME((pt)->lc)
+
+/**
+ * Declare the end of a protothread.
+ *
+ * This macro is used for declaring that a protothread ends. It must
+ * always be used together with a matching PT_BEGIN() macro.
+ *
+ * \param pt A pointer to the protothread control structure.
+ *
+ * \hideinitializer
+ */
+#define PT_END(pt) LC_END((pt)->lc); PT_YIELD_FLAG = 0; \
+ PT_INIT(pt); return PT_ENDED; }
+
+/** @} */
+
+/**
+ * \name Blocked wait
+ * @{
+ */
+
+/**
+ * Block and wait until condition is true.
+ *
+ * This macro blocks the protothread until the specified condition is
+ * true.
+ *
+ * \param pt A pointer to the protothread control structure.
+ * \param condition The condition.
+ *
+ * \hideinitializer
+ */
+#define PT_WAIT_UNTIL(pt, condition) \
+ do { \
+ LC_SET((pt)->lc); \
+ if(!(condition)) { \
+ return PT_WAITING; \
+ } \
+ } while(0)
+
+/**
+ * Block and wait while condition is true.
+ *
+ * This function blocks and waits while condition is true. See
+ * PT_WAIT_UNTIL().
+ *
+ * \param pt A pointer to the protothread control structure.
+ * \param cond The condition.
+ *
+ * \hideinitializer
+ */
+#define PT_WAIT_WHILE(pt, cond) PT_WAIT_UNTIL((pt), !(cond))
+
+/** @} */
+
+/**
+ * \name Hierarchical protothreads
+ * @{
+ */
+
+/**
+ * Block and wait until a child protothread completes.
+ *
+ * This macro schedules a child protothread. The current protothread
+ * will block until the child protothread completes.
+ *
+ * \note The child protothread must be manually initialized with the
+ * PT_INIT() function before this function is used.
+ *
+ * \param pt A pointer to the protothread control structure.
+ * \param thread The child protothread with arguments
+ *
+ * \sa PT_SPAWN()
+ *
+ * \hideinitializer
+ */
+#define PT_WAIT_THREAD(pt, thread) PT_WAIT_WHILE((pt), PT_SCHEDULE(thread))
+
+/**
+ * Spawn a child protothread and wait until it exits.
+ *
+ * This macro spawns a child protothread and waits until it exits. The
+ * macro can only be used within a protothread.
+ *
+ * \param pt A pointer to the protothread control structure.
+ * \param child A pointer to the child protothread's control structure.
+ * \param thread The child protothread with arguments
+ *
+ * \hideinitializer
+ */
+#define PT_SPAWN(pt, child, thread) \
+ do { \
+ PT_INIT((child)); \
+ PT_WAIT_THREAD((pt), (thread)); \
+ } while(0)
+
+/** @} */
+
+/**
+ * \name Exiting and restarting
+ * @{
+ */
+
+/**
+ * Restart the protothread.
+ *
+ * This macro will block and cause the running protothread to restart
+ * its execution at the place of the PT_BEGIN() call.
+ *
+ * \param pt A pointer to the protothread control structure.
+ *
+ * \hideinitializer
+ */
+#define PT_RESTART(pt) \
+ do { \
+ PT_INIT(pt); \
+ return PT_WAITING; \
+ } while(0)
+
+/**
+ * Exit the protothread.
+ *
+ * This macro causes the protothread to exit. If the protothread was
+ * spawned by another protothread, the parent protothread will become
+ * unblocked and can continue to run.
+ *
+ * \param pt A pointer to the protothread control structure.
+ *
+ * \hideinitializer
+ */
+#define PT_EXIT(pt) \
+ do { \
+ PT_INIT(pt); \
+ return PT_EXITED; \
+ } while(0)
+
+/** @} */
+
+/**
+ * \name Calling a protothread
+ * @{
+ */
+
+/**
+ * Schedule a protothread.
+ *
+ * This function shedules a protothread. The return value of the
+ * function is non-zero if the protothread is running or zero if the
+ * protothread has exited.
+ *
+ * \param f The call to the C function implementing the protothread to
+ * be scheduled
+ *
+ * \hideinitializer
+ */
+#define PT_SCHEDULE(f) ((f) == PT_WAITING)
+
+/** @} */
+
+/**
+ * \name Yielding from a protothread
+ * @{
+ */
+
+/**
+ * Yield from the current protothread.
+ *
+ * This function will yield the protothread, thereby allowing other
+ * processing to take place in the system.
+ *
+ * \param pt A pointer to the protothread control structure.
+ *
+ * \hideinitializer
+ */
+#define PT_YIELD(pt) \
+ do { \
+ PT_YIELD_FLAG = 0; \
+ LC_SET((pt)->lc); \
+ if(PT_YIELD_FLAG == 0) { \
+ return PT_YIELDED; \
+ } \
+ } while(0)
+
+/**
+ * \brief Yield from the protothread until a condition occurs.
+ * \param pt A pointer to the protothread control structure.
+ * \param cond The condition.
+ *
+ * This function will yield the protothread, until the
+ * specified condition evaluates to true.
+ *
+ *
+ * \hideinitializer
+ */
+#define PT_YIELD_UNTIL(pt, cond) \
+ do { \
+ PT_YIELD_FLAG = 0; \
+ LC_SET((pt)->lc); \
+ if((PT_YIELD_FLAG == 0) || !(cond)) { \
+ return PT_YIELDED; \
+ } \
+ } while(0)
+
+/** @} */
+
+#endif /* __PT_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/timer.c b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/timer.c new file mode 100644 index 0000000..9a63653 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/timer.c @@ -0,0 +1,130 @@ +/**
+ * \addtogroup timer
+ * @{
+ */
+
+/**
+ * \file
+ * Timer library implementation.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: timer.c,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+#include "clock.h"
+#include "uip_timer.h"
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Set a timer.
+ *
+ * This function is used to set a timer for a time sometime in the
+ * future. The function timer_expired() will evaluate to true after
+ * the timer has expired.
+ *
+ * \param t A pointer to the timer
+ * \param interval The interval before the timer expires.
+ *
+ */
+void timer_set( struct timer *t, clock_time_t interval )
+{
+ t->interval = interval;
+ t->start = clock_time();
+}
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Reset the timer with the same interval.
+ *
+ * This function resets the timer with the same interval that was
+ * given to the timer_set() function. The start point of the interval
+ * is the exact time that the timer last expired. Therefore, this
+ * function will cause the timer to be stable over time, unlike the
+ * timer_rester() function.
+ *
+ * \param t A pointer to the timer.
+ *
+ * \sa timer_restart()
+ */
+void timer_reset( struct timer *t )
+{
+ t->start += t->interval;
+}
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Restart the timer from the current point in time
+ *
+ * This function restarts a timer with the same interval that was
+ * given to the timer_set() function. The timer will start at the
+ * current time.
+ *
+ * \note A periodic timer will drift if this function is used to reset
+ * it. For preioric timers, use the timer_reset() function instead.
+ *
+ * \param t A pointer to the timer.
+ *
+ * \sa timer_reset()
+ */
+void timer_restart( struct timer *t )
+{
+ t->start = clock_time();
+}
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Check if a timer has expired.
+ *
+ * This function tests if a timer has expired and returns true or
+ * false depending on its status.
+ *
+ * \param t A pointer to the timer
+ *
+ * \return Non-zero if the timer has expired, zero otherwise.
+ *
+ */
+int timer_expired( struct timer *t )
+{
+ return( clock_time_t ) ( clock_time() - t->start ) >= ( clock_time_t ) t->interval;
+}
+
+/*---------------------------------------------------------------------------*/
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/timer.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/timer.h new file mode 100644 index 0000000..e28e3ca --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/timer.h @@ -0,0 +1,86 @@ +/**
+ * \defgroup timer Timer library
+ *
+ * The timer library provides functions for setting, resetting and
+ * restarting timers, and for checking if a timer has expired. An
+ * application must "manually" check if its timers have expired; this
+ * is not done automatically.
+ *
+ * A timer is declared as a \c struct \c timer and all access to the
+ * timer is made by a pointer to the declared timer.
+ *
+ * \note The timer library uses the \ref clock "Clock library" to
+ * measure time. Intervals should be specified in the format used by
+ * the clock library.
+ *
+ * @{
+ */
+
+
+/**
+ * \file
+ * Timer library header file.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: timer.h,v 1.3 2006/06/11 21:46:39 adam Exp $
+ */
+#ifndef __TIMER_H__
+#define __TIMER_H__
+
+#include "clock.h"
+
+/**
+ * A timer.
+ *
+ * This structure is used for declaring a timer. The timer must be set
+ * with timer_set() before it can be used.
+ *
+ * \hideinitializer
+ */
+struct timer {
+ clock_time_t start;
+ clock_time_t interval;
+};
+
+void timer_set(struct timer *t, clock_time_t interval);
+void timer_reset(struct timer *t);
+void timer_restart(struct timer *t);
+int timer_expired(struct timer *t);
+
+#endif /* __TIMER_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-fw.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-fw.h new file mode 100644 index 0000000..e854ece --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-fw.h @@ -0,0 +1,176 @@ +/**
+ * \addtogroup uipfw
+ * @{
+ */
+
+/**
+ * \file
+ * uIP packet forwarding header file.
+ * \author Adam Dunkels <adam@sics.se>
+ */
+
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: uip-fw.h,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+#ifndef __UIP_FW_H__
+#define __UIP_FW_H__
+
+#include "uip.h"
+
+/**
+ * Representation of a uIP network interface.
+ */
+struct uip_fw_netif {
+ struct uip_fw_netif *next; /**< Pointer to the next interface when
+ linked in a list. */
+ u16_t ipaddr[2]; /**< The IP address of this interface. */
+ u16_t netmask[2]; /**< The netmask of the interface. */
+ u8_t (* output)(void);
+ /**< A pointer to the function that
+ sends a packet. */
+};
+
+/**
+ * Intantiating macro for a uIP network interface.
+ *
+ * Example:
+ \code
+ struct uip_fw_netif slipnetif =
+ {UIP_FW_NETIF(192,168,76,1, 255,255,255,0, slip_output)};
+ \endcode
+ * \param ip1,ip2,ip3,ip4 The IP address of the network interface.
+ *
+ * \param nm1,nm2,nm3,nm4 The netmask of the network interface.
+ *
+ * \param outputfunc A pointer to the output function of the network interface.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_NETIF(ip1,ip2,ip3,ip4, nm1,nm2,nm3,nm4, outputfunc) \
+ NULL, \
+ {HTONS((ip1 << 8) | ip2), HTONS((ip3 << 8) | ip4)}, \
+ {HTONS((nm1 << 8) | nm2), HTONS((nm3 << 8) | nm4)}, \
+ outputfunc
+
+/**
+ * Set the IP address of a network interface.
+ *
+ * \param netif A pointer to the uip_fw_netif structure for the network interface.
+ *
+ * \param addr A pointer to an IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_fw_setipaddr(netif, addr) \
+ do { (netif)->ipaddr[0] = ((u16_t *)(addr))[0]; \
+ (netif)->ipaddr[1] = ((u16_t *)(addr))[1]; } while(0)
+/**
+ * Set the netmask of a network interface.
+ *
+ * \param netif A pointer to the uip_fw_netif structure for the network interface.
+ *
+ * \param addr A pointer to an IP address representing the netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_fw_setnetmask(netif, addr) \
+ do { (netif)->netmask[0] = ((u16_t *)(addr))[0]; \
+ (netif)->netmask[1] = ((u16_t *)(addr))[1]; } while(0)
+
+void uip_fw_init(void);
+u8_t uip_fw_forward(void);
+u8_t uip_fw_output(void);
+void uip_fw_register(struct uip_fw_netif *netif);
+void uip_fw_default(struct uip_fw_netif *netif);
+void uip_fw_periodic(void);
+
+
+/**
+ * A non-error message that indicates that a packet should be
+ * processed locally.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_LOCAL 0
+
+/**
+ * A non-error message that indicates that something went OK.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_OK 0
+
+/**
+ * A non-error message that indicates that a packet was forwarded.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_FORWARDED 1
+
+/**
+ * A non-error message that indicates that a zero-length packet
+ * transmission was attempted, and that no packet was sent.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_ZEROLEN 2
+
+/**
+ * An error message that indicates that a packet that was too large
+ * for the outbound network interface was detected.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_TOOLARGE 3
+
+/**
+ * An error message that indicates that no suitable interface could be
+ * found for an outbound packet.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_NOROUTE 4
+
+/**
+ * An error message that indicates that a packet that should be
+ * forwarded or output was dropped.
+ *
+ * \hideinitializer
+ */
+#define UIP_FW_DROPPED 5
+
+
+#endif /* __UIP_FW_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-neighbor.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-neighbor.h new file mode 100644 index 0000000..aca096f --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-neighbor.h @@ -0,0 +1,61 @@ +/*
+ * Copyright (c) 2006, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * $Id: uip-neighbor.h,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+
+/**
+ * \file
+ * Header file for database of link-local neighbors, used by
+ * IPv6 code and to be used by future ARP code.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+
+#ifndef __UIP_NEIGHBOR_H__
+#define __UIP_NEIGHBOR_H__
+
+#include "uip.h"
+
+struct uip_neighbor_addr {
+#if UIP_NEIGHBOR_CONF_ADDRTYPE
+ UIP_NEIGHBOR_CONF_ADDRTYPE addr;
+#else
+ struct uip_eth_addr addr;
+#endif
+};
+
+void uip_neighbor_init(void);
+void uip_neighbor_add(uip_ipaddr_t ipaddr, struct uip_neighbor_addr *addr);
+void uip_neighbor_update(uip_ipaddr_t ipaddr);
+struct uip_neighbor_addr *uip_neighbor_lookup(uip_ipaddr_t ipaddr);
+void uip_neighbor_periodic(void);
+
+#endif /* __UIP-NEIGHBOR_H__ */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-split.c b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-split.c new file mode 100644 index 0000000..6828f3c --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-split.c @@ -0,0 +1,144 @@ +/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: uip-split.c,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+#include <string.h>
+
+#include "uip-split.h"
+#include "uip.h"
+#include "uip-fw.h"
+#include "uip_arch.h"
+
+#define BUF ( ( struct uip_tcpip_hdr * ) &uip_buf[UIP_LLH_LEN] )
+
+/*-----------------------------------------------------------------------------*/
+void uip_split_output( void )
+{
+ u16_t tcplen, len1, len2;
+
+ /* We only try to split maximum sized TCP segments. */
+ if( BUF->proto == UIP_PROTO_TCP && uip_len == UIP_BUFSIZE - UIP_LLH_LEN )
+ {
+ tcplen = uip_len - UIP_TCPIP_HLEN;
+
+ /* Split the segment in two. If the original packet length was
+ odd, we make the second packet one byte larger. */
+ len1 = len2 = tcplen / 2;
+ if( len1 + len2 < tcplen )
+ {
+ ++len2;
+ }
+
+ /* Create the first packet. This is done by altering the length
+ field of the IP header and updating the checksums. */
+ uip_len = len1 + UIP_TCPIP_HLEN;
+ #if UIP_CONF_IPV6
+
+ /* For IPv6, the IP length field does not include the IPv6 IP header
+ length. */
+ BUF->len[0] = ( (uip_len - UIP_IPH_LEN) >> 8 );
+ BUF->len[1] = ( (uip_len - UIP_IPH_LEN) & 0xff );
+ #else /* UIP_CONF_IPV6 */
+ BUF->len[0] = uip_len >> 8;
+ BUF->len[1] = uip_len & 0xff;
+ #endif /* UIP_CONF_IPV6 */
+
+ /* Recalculate the TCP checksum. */
+ BUF->tcpchksum = 0;
+ BUF->tcpchksum = ~( uip_tcpchksum() );
+
+ #if !UIP_CONF_IPV6
+
+ /* Recalculate the IP checksum. */
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~( uip_ipchksum() );
+ #endif /* UIP_CONF_IPV6 */
+
+ /* Transmit the first packet. */
+
+ /* uip_fw_output();*/
+
+ // tcpip_output();
+
+ /* Now, create the second packet. To do this, it is not enough to
+ just alter the length field, but we must also update the TCP
+ sequence number and point the uip_appdata to a new place in
+ memory. This place is detemined by the length of the first
+ packet (len1). */
+ uip_len = len2 + UIP_TCPIP_HLEN;
+ #if UIP_CONF_IPV6
+
+ /* For IPv6, the IP length field does not include the IPv6 IP header
+ length. */
+ BUF->len[0] = ( (uip_len - UIP_IPH_LEN) >> 8 );
+ BUF->len[1] = ( (uip_len - UIP_IPH_LEN) & 0xff );
+ #else /* UIP_CONF_IPV6 */
+ BUF->len[0] = uip_len >> 8;
+ BUF->len[1] = uip_len & 0xff;
+ #endif /* UIP_CONF_IPV6 */
+
+ /* uip_appdata += len1;*/
+ memcpy( uip_appdata, ( u8_t * ) uip_appdata + len1, len2 );
+
+ uip_add32( BUF->seqno, len1 );
+ BUF->seqno[0] = uip_acc32[0];
+ BUF->seqno[1] = uip_acc32[1];
+ BUF->seqno[2] = uip_acc32[2];
+ BUF->seqno[3] = uip_acc32[3];
+
+ /* Recalculate the TCP checksum. */
+ BUF->tcpchksum = 0;
+ BUF->tcpchksum = ~( uip_tcpchksum() );
+
+ #if !UIP_CONF_IPV6
+
+ /* Recalculate the IP checksum. */
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~( uip_ipchksum() );
+ #endif /* UIP_CONF_IPV6 */
+
+ /* Transmit the second packet. */
+
+ /* uip_fw_output();*/
+
+ // tcpip_output();
+ }
+ else
+ {
+ /* uip_fw_output();*/
+
+ // tcpip_output();
+ }
+}
+
+/*-----------------------------------------------------------------------------*/
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-split.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-split.h new file mode 100644 index 0000000..446e192 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip-split.h @@ -0,0 +1,96 @@ +/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: uip-split.h,v 1.2 2006/06/12 08:00:30 adam Exp $
+ */
+/**
+ * \addtogroup uip
+ * @{
+ */
+
+/**
+ * \defgroup uipsplit uIP TCP throughput booster hack
+ * @{
+ *
+ * The basic uIP TCP implementation only allows each TCP connection to
+ * have a single TCP segment in flight at any given time. Because of
+ * the delayed ACK algorithm employed by most TCP receivers, uIP's
+ * limit on the amount of in-flight TCP segments seriously reduces the
+ * maximum achievable throughput for sending data from uIP.
+ *
+ * The uip-split module is a hack which tries to remedy this
+ * situation. By splitting maximum sized outgoing TCP segments into
+ * two, the delayed ACK algorithm is not invoked at TCP
+ * receivers. This improves the throughput when sending data from uIP
+ * by orders of magnitude.
+ *
+ * The uip-split module uses the uip-fw module (uIP IP packet
+ * forwarding) for sending packets. Therefore, the uip-fw module must
+ * be set up with the appropriate network interfaces for this module
+ * to work.
+ */
+
+
+/**
+ * \file
+ * Module for splitting outbound TCP segments in two to avoid the
+ * delayed ACK throughput degradation.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#ifndef __UIP_SPLIT_H__
+#define __UIP_SPLIT_H__
+
+/**
+ * Handle outgoing packets.
+ *
+ * This function inspects an outgoing packet in the uip_buf buffer and
+ * sends it out using the uip_fw_output() function. If the packet is a
+ * full-sized TCP segment it will be split into two segments and
+ * transmitted separately. This function should be called instead of
+ * the actual device driver output function, or the uip_fw_output()
+ * function.
+ *
+ * The headers of the outgoing packet is assumed to be in the uip_buf
+ * buffer and the payload is assumed to be wherever uip_appdata
+ * points. The length of the outgoing packet is assumed to be in the
+ * uip_len variable.
+ *
+ */
+void uip_split_output(void);
+
+#endif /* __UIP_SPLIT_H__ */
+
+/** @} */
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip.c b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip.c new file mode 100644 index 0000000..1c07f35 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip.c @@ -0,0 +1,2233 @@ +#define DEBUG_PRINTF( ... ) /*printf(__VA_ARGS__)*/
+
+/**
+ * \defgroup uip The uIP TCP/IP stack
+ * @{
+ *
+ * uIP is an implementation of the TCP/IP protocol stack intended for
+ * small 8-bit and 16-bit microcontrollers.
+ *
+ * uIP provides the necessary protocols for Internet communication,
+ * with a very small code footprint and RAM requirements - the uIP
+ * code size is on the order of a few kilobytes and RAM usage is on
+ * the order of a few hundred bytes.
+ */
+
+/**
+ * \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 1.65 2006/06/11 21:46:39 adam Exp $
+ *
+ */
+
+/*
+ * uIP is a small implementation of the IP, UDP and TCP protocols (as
+ * well as some basic ICMP stuff). The implementation couples the IP,
+ * UDP, TCP and the application layers very tightly. To keep the size
+ * of the compiled code down, this code frequently uses the goto
+ * statement. While it would be possible to break the uip_process()
+ * function into many smaller functions, this would increase the code
+ * size because of the overhead of parameter passing and the fact that
+ * the optimier would not be as efficient.
+ *
+ * The principle is that we have a small buffer, called the uip_buf,
+ * in which the device driver puts an incoming packet. The TCP/IP
+ * stack parses the headers in the packet, and calls the
+ * application. If the remote host has sent data to the application,
+ * this data is present in the uip_buf and the application read the
+ * data from there. It is up to the application to put this data into
+ * a byte stream if needed. The application will not be fed with data
+ * that is out of sequence.
+ *
+ * If the application whishes to send data to the peer, it should put
+ * its data into the uip_buf. The uip_appdata pointer points to the
+ * first available byte. The TCP/IP stack will calculate the
+ * checksums, and fill in the necessary header fields and finally send
+ * the packet back to the peer.
+*/
+#include "uip.h"
+#include "uipopt.h"
+#include "uip_arch.h"
+#include "uip_arp.h"
+#include "FreeRTOS.h"
+
+#if UIP_CONF_IPV6
+ #include "uip-neighbor.h"
+#endif /* UIP_CONF_IPV6 */
+
+#include <string.h>
+
+/*---------------------------------------------------------------------------*/
+
+/* Variable definitions. */
+
+/* The IP address of this host. If it is defined to be fixed (by
+ setting UIP_FIXEDADDR to 1 in uipopt.h), the address is set
+ here. Otherwise, the address */
+#if UIP_FIXEDADDR > 0
+const uip_ipaddr_t uip_hostaddr = { HTONS( (UIP_IPADDR0 << 8) | UIP_IPADDR1 ), HTONS( (UIP_IPADDR2 << 8) | UIP_IPADDR3 ) };
+const uip_ipaddr_t uip_draddr = { HTONS( (UIP_DRIPADDR0 << 8) | UIP_DRIPADDR1 ), HTONS( (UIP_DRIPADDR2 << 8) | UIP_DRIPADDR3 ) };
+const uip_ipaddr_t uip_netmask = { HTONS( (UIP_NETMASK0 << 8) | UIP_NETMASK1 ), HTONS( (UIP_NETMASK2 << 8) | UIP_NETMASK3 ) };
+#else
+uip_ipaddr_t uip_hostaddr, uip_draddr, uip_netmask;
+#endif /* UIP_FIXEDADDR */
+
+static const uip_ipaddr_t all_ones_addr =
+#if UIP_CONF_IPV6
+{ 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff };
+#else /* UIP_CONF_IPV6 */
+{
+ 0xffff, 0xffff
+};
+#endif /* UIP_CONF_IPV6 */
+static const uip_ipaddr_t all_zeroes_addr =
+#if UIP_CONF_IPV6
+{ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 };
+#else /* UIP_CONF_IPV6 */
+{
+ 0x0000, 0x0000
+};
+#endif /* UIP_CONF_IPV6 */
+
+#if UIP_FIXEDETHADDR
+const struct uip_eth_addr uip_ethaddr = { { UIP_ETHADDR0, UIP_ETHADDR1, UIP_ETHADDR2, UIP_ETHADDR3, UIP_ETHADDR4, UIP_ETHADDR5 } };
+#else
+struct uip_eth_addr uip_ethaddr = { { 0, 0, 0, 0, 0, 0 } };
+#endif
+#ifndef UIP_CONF_EXTERNAL_BUFFER
+ #ifdef __ICCARM__
+ #pragma data_alignment = 4
+u8_t uip_buf[UIP_BUFSIZE + 2]; /* The packet buffer that contains incoming packets. */
+ #else
+u8_t uip_buf[UIP_BUFSIZE + 2] ALIGN_STRUCT_END; /* The packet buffer that contains incoming packets. */
+ #endif
+#endif /* UIP_CONF_EXTERNAL_BUFFER */
+
+void *uip_appdata; /* The uip_appdata pointer points to
+ application data. */
+void *uip_sappdata; /* The uip_appdata pointer points to
+ the application data which is to
+ be sent. */
+#if UIP_URGDATA > 0
+void *uip_urgdata; /* The uip_urgdata pointer points to
+ urgent data (out-of-band data), if
+ present. */
+u16_t uip_urglen, uip_surglen;
+#endif /* UIP_URGDATA > 0 */
+
+u16_t uip_len, uip_slen;
+
+/* The uip_len is either 8 or 16 bits,
+ depending on the maximum packet
+ size. */
+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. */
+u16_t uip_listenports[UIP_LISTENPORTS];
+
+/* The uip_listenports list all currently
+ listning ports. */
+#if UIP_UDP
+struct uip_udp_conn *uip_udp_conn;
+struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+#endif /* UIP_UDP */
+
+static u16_t ipid; /* Ths ipid variable is an increasing
+ number that is used for the IP ID
+ field. */
+
+void uip_setipid( u16_t id )
+{
+ ipid = id;
+}
+
+static u8_t iss[4]; /* The iss variable is used for the TCP
+ initial sequence number. */
+
+#if UIP_ACTIVE_OPEN
+static u16_t lastport; /* Keeps track of the last port used for
+ a new connection. */
+#endif /* UIP_ACTIVE_OPEN */
+
+/* Temporary variables. */
+u8_t uip_acc32[4];
+static u8_t c, opt;
+static u16_t tmp16;
+
+/* Structures and definitions. */
+#define TCP_FIN 0x01
+#define TCP_SYN 0x02
+#define TCP_RST 0x04
+#define TCP_PSH 0x08
+#define TCP_ACK 0x10
+#define TCP_URG 0x20
+#define TCP_CTL 0x3f
+
+#define TCP_OPT_END 0 /* End of TCP options list */
+#define TCP_OPT_NOOP 1 /* "No-operation" TCP option */
+#define TCP_OPT_MSS 2 /* Maximum segment size TCP option */
+
+#define TCP_OPT_MSS_LEN 4 /* Length of TCP MSS option. */
+
+#define ICMP_ECHO_REPLY 0
+#define ICMP_ECHO 8
+
+#define ICMP6_ECHO_REPLY 129
+#define ICMP6_ECHO 128
+#define ICMP6_NEIGHBOR_SOLICITATION 135
+#define ICMP6_NEIGHBOR_ADVERTISEMENT 136
+
+#define ICMP6_FLAG_S ( 1 << 6 )
+#define ICMP6_OPTION_SOURCE_LINK_ADDRESS 1
+#define ICMP6_OPTION_TARGET_LINK_ADDRESS 2
+
+/* Macros. */
+#define BUF ( ( struct uip_tcpip_hdr * ) &uip_buf[UIP_LLH_LEN] )
+#define FBUF ( ( struct uip_tcpip_hdr * ) &uip_reassbuf[0] )
+#define ICMPBUF ( ( struct uip_icmpip_hdr * ) &uip_buf[UIP_LLH_LEN] )
+#define UDPBUF ( ( struct uip_udpip_hdr * ) &uip_buf[UIP_LLH_LEN] )
+#if UIP_STATISTICS == 1
+struct uip_stats uip_stat;
+ #define UIP_STAT( s ) s
+#else
+ #define UIP_STAT( s )
+#endif /* UIP_STATISTICS == 1 */
+
+#if UIP_LOGGING == 1
+ #include <stdio.h>
+void uip_log( char *msg );
+ #define UIP_LOG( m ) uip_log( m )
+#else
+ #define UIP_LOG( m )
+#endif /* UIP_LOGGING == 1 */
+
+#if !UIP_ARCH_ADD32
+void uip_add32( 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];
+ }
+ }
+ }
+}
+
+#endif /* UIP_ARCH_ADD32 */
+
+#if !UIP_ARCH_CHKSUM
+
+/*---------------------------------------------------------------------------*/
+static u16_t chksum( u16_t sum, const u8_t *data, u16_t len )
+{
+ u16_t t;
+ const u8_t *dataptr;
+ const u8_t *last_byte;
+
+ dataptr = data;
+ last_byte = data + len - 1;
+
+ while( dataptr < last_byte )
+ { /* At least two more bytes */
+ t = ( dataptr[0] << 8 ) + dataptr[1];
+ sum += t;
+ if( sum < t )
+ {
+ sum++; /* carry */
+ }
+
+ dataptr += 2;
+ }
+
+ if( dataptr == last_byte )
+ {
+ t = ( dataptr[0] << 8 ) + 0;
+ sum += t;
+ if( sum < t )
+ {
+ sum++; /* carry */
+ }
+ }
+
+ /* Return sum in host byte order. */
+ return sum;
+}
+
+/*---------------------------------------------------------------------------*/
+u16_t uip_chksum( u16_t *data, u16_t len )
+{
+ return htons( chksum(0, ( u8_t * ) data, len) );
+}
+
+/*---------------------------------------------------------------------------*/
+ #ifndef UIP_ARCH_IPCHKSUM
+u16_t uip_ipchksum( void )
+{
+ u16_t sum;
+
+ sum = chksum( 0, &uip_buf[UIP_LLH_LEN], UIP_IPH_LEN );
+ DEBUG_PRINTF( "uip_ipchksum: sum 0x%04x\n", sum );
+ return( sum == 0 ) ? 0xffff : htons( sum );
+}
+
+ #endif
+
+/*---------------------------------------------------------------------------*/
+static u16_t upper_layer_chksum( u8_t proto )
+{
+ u16_t upper_layer_len;
+ u16_t sum;
+
+ #if UIP_CONF_IPV6
+ upper_layer_len = ( ((u16_t) (BUF->len[0]) << 8) + BUF->len[1] );
+ #else /* UIP_CONF_IPV6 */
+ upper_layer_len = ( ((u16_t) (BUF->len[0]) << 8) + BUF->len[1] ) - UIP_IPH_LEN;
+ #endif /* UIP_CONF_IPV6 */
+
+ /* First sum pseudoheader. */
+
+ /* IP protocol and length fields. This addition cannot carry. */
+ sum = upper_layer_len + proto;
+
+ /* Sum IP source and destination addresses. */
+ sum = chksum( sum, ( u8_t * ) &BUF->srcipaddr[0], 2 * sizeof(uip_ipaddr_t) );
+
+ /* Sum TCP header and data. */
+ sum = chksum( sum, &uip_buf[UIP_IPH_LEN + UIP_LLH_LEN], upper_layer_len );
+
+ return( sum == 0 ) ? 0xffff : htons( sum );
+}
+
+/*---------------------------------------------------------------------------*/
+ #if UIP_CONF_IPV6
+u16_t uip_icmp6chksum( void )
+{
+ return upper_layer_chksum( UIP_PROTO_ICMP6 );
+}
+
+ #endif /* UIP_CONF_IPV6 */
+
+/*---------------------------------------------------------------------------*/
+u16_t uip_tcpchksum( void )
+{
+ return upper_layer_chksum( UIP_PROTO_TCP );
+}
+
+/*---------------------------------------------------------------------------*/
+ #if UIP_UDP_CHECKSUMS
+u16_t uip_udpchksum( void )
+{
+ return upper_layer_chksum( UIP_PROTO_UDP );
+}
+
+ #endif /* UIP_UDP_CHECKSUMS */
+#endif /* UIP_ARCH_CHKSUM */
+
+/*---------------------------------------------------------------------------*/
+void uip_init( void )
+{
+ for( c = 0; c < UIP_LISTENPORTS; ++c )
+ {
+ uip_listenports[c] = 0;
+ }
+
+ for( c = 0; c < UIP_CONNS; ++c )
+ {
+ uip_conns[c].tcpstateflags = UIP_CLOSED;
+ }
+
+ #if UIP_ACTIVE_OPEN
+ 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( uip_ipaddr_t *ripaddr, u16_t rport )
+{
+ register struct uip_conn *conn, *cconn;
+
+ /* Find an unused local port. */
+again:
+ ++lastport;
+
+ if( lastport >= 32000 )
+ {
+ lastport = 4096;
+ }
+
+ /* Check if this port is already in use, and if so try to find
+ another one. */
+ for( c = 0; c < UIP_CONNS; ++c )
+ {
+ conn = &uip_conns[c];
+ if( conn->tcpstateflags != UIP_CLOSED && conn->lport == htons(lastport) )
+ {
+ goto again;
+ }
+ }
+
+ conn = 0;
+ for( c = 0; c < UIP_CONNS; ++c )
+ {
+ cconn = &uip_conns[c];
+ if( cconn->tcpstateflags == UIP_CLOSED )
+ {
+ conn = cconn;
+ break;
+ }
+
+ if( cconn->tcpstateflags == UIP_TIME_WAIT )
+ {
+ if( conn == 0 || cconn->timer > conn->timer )
+ {
+ conn = cconn;
+ }
+ }
+ }
+
+ if( conn == 0 )
+ {
+ return 0;
+ }
+
+ conn->tcpstateflags = UIP_SYN_SENT;
+
+ conn->snd_nxt[0] = iss[0];
+ conn->snd_nxt[1] = iss[1];
+ conn->snd_nxt[2] = iss[2];
+ conn->snd_nxt[3] = iss[3];
+
+ conn->initialmss = conn->mss = UIP_TCP_MSS;
+
+ conn->len = 1; /* TCP length of the SYN is one. */
+ conn->nrtx = 0;
+ conn->timer = 1; /* Send the SYN next time around. */
+ conn->rto = UIP_RTO;
+ conn->sa = 0;
+ conn->sv = 16; /* Initial value of the RTT variance. */
+ conn->lport = htons( lastport );
+ conn->rport = rport;
+ uip_ipaddr_copy( &conn->ripaddr, ripaddr );
+
+ return conn;
+}
+
+#endif /* UIP_ACTIVE_OPEN */
+
+/*---------------------------------------------------------------------------*/
+#if UIP_UDP
+struct uip_udp_conn *uip_udp_new( uip_ipaddr_t *ripaddr, u16_t rport )
+{
+ register struct uip_udp_conn *conn;
+
+ /* Find an unused local port. */
+again:
+ ++lastport;
+
+ if( lastport >= 32000 )
+ {
+ lastport = 4096;
+ }
+
+ for( c = 0; c < UIP_UDP_CONNS; ++c )
+ {
+ if( uip_udp_conns[c].lport == htons(lastport) )
+ {
+ goto again;
+ }
+ }
+
+ conn = 0;
+ for( c = 0; c < UIP_UDP_CONNS; ++c )
+ {
+ if( uip_udp_conns[c].lport == 0 )
+ {
+ conn = &uip_udp_conns[c];
+ break;
+ }
+ }
+
+ if( conn == 0 )
+ {
+ return 0;
+ }
+
+ conn->lport = HTONS( lastport );
+ conn->rport = rport;
+ if( ripaddr == NULL )
+ {
+ memset( conn->ripaddr, 0, sizeof(uip_ipaddr_t) );
+ }
+ else
+ {
+ uip_ipaddr_copy( &conn->ripaddr, ripaddr );
+ }
+
+ conn->ttl = UIP_TTL;
+
+ return conn;
+}
+
+#endif /* UIP_UDP */
+
+/*---------------------------------------------------------------------------*/
+void uip_unlisten( u16_t port )
+{
+ for( c = 0; c < UIP_LISTENPORTS; ++c )
+ {
+ if( uip_listenports[c] == port )
+ {
+ uip_listenports[c] = 0;
+ return;
+ }
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+void uip_listen( u16_t port )
+{
+ for( c = 0; c < UIP_LISTENPORTS; ++c )
+ {
+ if( uip_listenports[c] == 0 )
+ {
+ uip_listenports[c] = port;
+ return;
+ }
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+
+/* XXX: IP fragment reassembly: not well-tested. */
+#if UIP_REASSEMBLY && !UIP_CONF_IPV6
+ #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 u16_t uip_reasslen;
+static u8_t uip_reassflags;
+ #define UIP_REASS_FLAG_LASTFRAG 0x01
+static u8_t uip_reasstmr;
+
+ #define IP_MF 0x20
+
+static u8_t uip_reass( void )
+{
+ u16_t offset, len;
+ u16_t i;
+
+ /* If ip_reasstmr is zero, no packet is present in the buffer, so we
+ write the IP header of the fragment into the reassembly
+ buffer. The timer is updated with the maximum age. */
+ if( uip_reasstmr == 0 )
+ {
+ memcpy( uip_reassbuf, &BUF->vhl, UIP_IPH_LEN );
+ uip_reasstmr = UIP_REASS_MAXAGE;
+ uip_reassflags = 0;
+
+ /* Clear the bitmap. */
+ memset( uip_reassbitmap, 0, sizeof(uip_reassbitmap) );
+ }
+
+ /* Check if the incoming fragment matches the one currently present
+ in the reasembly buffer. If so, we proceed with copying the
+ fragment into the buffer. */
+ if
+ (
+ BUF->srcipaddr[0] == FBUF->srcipaddr[0] &&
+ BUF->srcipaddr[1] == FBUF->srcipaddr[1] &&
+ BUF->destipaddr[0] == FBUF->destipaddr[0] &&
+ BUF->destipaddr[1] == FBUF->destipaddr[1] &&
+ BUF->ipid[0] == FBUF->ipid[0] &&
+ BUF->ipid[1] == FBUF->ipid[1]
+ )
+ {
+ len = ( BUF->len[0] << 8 ) + BUF->len[1] - ( BUF->vhl & 0x0f ) * 4;
+ offset = ( ((BUF->ipoffset[0] & 0x3f) << 8) + BUF->ipoffset[1] ) * 8;
+
+ /* If the offset or the offset + fragment length overflows the
+ reassembly buffer, we discard the entire packet. */
+ if( offset > UIP_REASS_BUFSIZE || offset + len > UIP_REASS_BUFSIZE )
+ {
+ uip_reasstmr = 0;
+ goto nullreturn;
+ }
+
+ /* Copy the fragment into the reassembly buffer, at the right
+ offset. */
+ memcpy( &uip_reassbuf[UIP_IPH_LEN + offset], ( char * ) BUF + ( int ) ((BUF->vhl & 0x0f) * 4), len );
+
+ /* Update the bitmap. */
+ if( offset / (8 * 8) == (offset + len) / (8 * 8) )
+ {
+ /* If the two endpoints are in the same byte, we only update
+ that byte. */
+ uip_reassbitmap[offset / ( 8 * 8 )] |= bitmap_bits[( offset / 8 ) & 7] &~bitmap_bits[( (offset + len) / 8 ) & 7];
+ }
+ else
+ {
+ /* If the two endpoints are in different bytes, we update the
+ bytes in the endpoints and fill the stuff inbetween with
+ 0xff. */
+ uip_reassbitmap[offset / ( 8 * 8 )] |= bitmap_bits[( offset / 8 ) & 7];
+ for( i = 1 + offset / (8 * 8); i < (offset + len) / (8 * 8); ++i )
+ {
+ uip_reassbitmap[i] = 0xff;
+ }
+
+ uip_reassbitmap[( offset + len ) / ( 8 * 8 )] |= ~bitmap_bits[( (offset + len) / 8 ) & 7];
+ }
+
+ /* If this fragment has the More Fragments flag set to zero, we
+ know that this is the last fragment, so we can calculate the
+ size of the entire packet. We also set the
+ IP_REASS_FLAG_LASTFRAG flag to indicate that we have received
+ the final fragment. */
+ if( (BUF->ipoffset[0] & IP_MF) == 0 )
+ {
+ uip_reassflags |= UIP_REASS_FLAG_LASTFRAG;
+ uip_reasslen = offset + len;
+ }
+
+ /* Finally, we check if we have a full packet in the buffer. We do
+ this by checking if we have the last fragment and if all bits
+ in the bitmap are set. */
+ if( uip_reassflags & UIP_REASS_FLAG_LASTFRAG )
+ {
+ /* Check all bytes up to and including all but the last byte in
+ the bitmap. */
+ for( i = 0; i < uip_reasslen / (8 * 8) - 1; ++i )
+ {
+ if( uip_reassbitmap[i] != 0xff )
+ {
+ goto nullreturn;
+ }
+ }
+
+ /* Check the last byte in the bitmap. It should contain just the
+ right amount of bits. */
+ if( uip_reassbitmap[uip_reasslen / (8 * 8)] != (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_REASSEMBLY */
+
+/*---------------------------------------------------------------------------*/
+static void uip_add_rcv_nxt( u16_t n )
+{
+ uip_add32( uip_conn->rcv_nxt, n );
+ uip_conn->rcv_nxt[0] = uip_acc32[0];
+ uip_conn->rcv_nxt[1] = uip_acc32[1];
+ uip_conn->rcv_nxt[2] = uip_acc32[2];
+ uip_conn->rcv_nxt[3] = uip_acc32[3];
+}
+
+/*---------------------------------------------------------------------------*/
+void uip_process( u8_t flag )
+{
+ register struct uip_conn *uip_connr = uip_conn;
+
+ #if UIP_UDP
+ if( flag == UIP_UDP_SEND_CONN )
+ {
+ goto udp_send;
+ }
+
+ #endif /* UIP_UDP */
+
+ uip_sappdata = uip_appdata = &uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN];
+
+ /* Check if we were invoked because of a poll request for a
+ particular connection. */
+ if( flag == UIP_POLL_REQUEST )
+ {
+ if( (uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED && !uip_outstanding(uip_connr) )
+ {
+ uip_flags = UIP_POLL;
+ UIP_APPCALL();
+ goto appsend;
+ }
+
+ goto drop;
+
+ /* Check if we were invoked because of the perodic timer fireing. */
+ }
+ else if( flag == UIP_TIMER )
+ {
+ #if UIP_REASSEMBLY
+ if( uip_reasstmr != 0 )
+ {
+ --uip_reasstmr;
+ }
+
+ #endif /* UIP_REASSEMBLY */
+
+ /* Increase the initial sequence number. */
+ if( ++iss[3] == 0 )
+ {
+ if( ++iss[2] == 0 )
+ {
+ if( ++iss[1] == 0 )
+ {
+ ++iss[0];
+ }
+ }
+ }
+
+ /* Reset the length variables. */
+ uip_len = 0;
+ uip_slen = 0;
+
+ /* Check if the connection is in a state in which we simply wait
+ for the connection to time out. If so, we increase the
+ connection's timer and remove the connection if it times
+ out. */
+ if( uip_connr->tcpstateflags == UIP_TIME_WAIT || uip_connr->tcpstateflags == UIP_FIN_WAIT_2 )
+ {
+ ++( uip_connr->timer );
+ if( uip_connr->timer == UIP_TIME_WAIT_TIMEOUT )
+ {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ }
+ }
+ else if( uip_connr->tcpstateflags != UIP_CLOSED )
+ {
+ /* If the connection has outstanding data, we increase the
+ connection's timer and see if it has reached the RTO value
+ in which case we retransmit. */
+ if( uip_outstanding(uip_connr) )
+ {
+ uip_connr->timer = uip_connr->timer - 1;
+ if( uip_connr->timer == 0 )
+ {
+ if
+ (
+ uip_connr->nrtx == UIP_MAXRTX ||
+ (
+ (uip_connr->tcpstateflags == UIP_SYN_SENT || uip_connr->tcpstateflags == UIP_SYN_RCVD) &&
+ uip_connr->nrtx == UIP_MAXSYNRTX
+ )
+ )
+ {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+
+ /* We call UIP_APPCALL() with uip_flags set to
+ UIP_TIMEDOUT to inform the application that the
+ connection has timed out. */
+ uip_flags = UIP_TIMEDOUT;
+ UIP_APPCALL();
+
+ /* We also send a reset packet to the remote host. */
+ BUF->flags = TCP_RST | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ /* Exponential backoff. */
+ uip_connr->timer = UIP_RTO << ( uip_connr->nrtx > 4 ? 4 : uip_connr->nrtx );
+ ++( uip_connr->nrtx );
+
+ /* Ok, so we need to retransmit. We do this differently
+ depending on which state we are in. In ESTABLISHED, we
+ call upon the application so that it may prepare the
+ data for the retransmit. In SYN_RCVD, we resend the
+ SYNACK that we sent earlier and in LAST_ACK we have to
+ retransmit our FINACK. */
+ UIP_STAT( ++uip_stat.tcp.rexmit );
+ switch( uip_connr->tcpstateflags & UIP_TS_MASK )
+ {
+ case UIP_SYN_RCVD:
+ /* In the SYN_RCVD state, we should retransmit our
+ SYNACK. */
+ goto tcp_send_synack;
+
+ #if UIP_ACTIVE_OPEN
+
+ case UIP_SYN_SENT:
+ /* In the SYN_SENT state, we retransmit out SYN. */
+ BUF->flags = 0;
+ goto tcp_send_syn;
+ #endif /* UIP_ACTIVE_OPEN */
+
+ case UIP_ESTABLISHED:
+ /* In the ESTABLISHED state, we call upon the application
+ to do the actual retransmit after which we jump into
+ the code for sending out the packet (the apprexmit
+ label). */
+ uip_flags = UIP_REXMIT;
+ UIP_APPCALL();
+ goto apprexmit;
+
+ case UIP_FIN_WAIT_1:
+ case UIP_CLOSING:
+ case UIP_LAST_ACK:
+ /* In all these states we should retransmit a FINACK. */
+ goto tcp_send_finack;
+ }
+ }
+ }
+ else if( (uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_ESTABLISHED )
+ {
+ /* If there was no need for a retransmission, we poll the
+ application for new data. */
+ uip_flags = UIP_POLL;
+ UIP_APPCALL();
+ goto appsend;
+ }
+ }
+
+ goto drop;
+ }
+
+ #if UIP_UDP
+ if( flag == UIP_UDP_TIMER )
+ {
+ if( uip_udp_conn->lport != 0 )
+ {
+ uip_conn = NULL;
+ uip_sappdata = uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
+ uip_len = uip_slen = 0;
+ uip_flags = UIP_POLL;
+ UIP_UDP_APPCALL();
+ goto udp_send;
+ }
+ else
+ {
+ goto drop;
+ }
+ }
+
+ #endif
+
+ /* This is where the input processing starts. */
+ UIP_STAT( ++uip_stat.ip.recv );
+
+ /* Start of IP input header processing code. */
+ #if UIP_CONF_IPV6
+
+ /* Check validity of the IP header. */
+ if( (BUF->vtc & 0xf0) != 0x60 )
+ { /* IP version and header length. */
+ UIP_STAT( ++uip_stat.ip.drop );
+ UIP_STAT( ++uip_stat.ip.vhlerr );
+ UIP_LOG( "ipv6: invalid version." );
+ goto drop;
+ }
+
+ #else /* UIP_CONF_IPV6 */
+
+ /* Check validity of the IP header. */
+ if( BUF->vhl != 0x45 )
+ { /* IP version and header length. */
+ UIP_STAT( ++uip_stat.ip.drop );
+ UIP_STAT( ++uip_stat.ip.vhlerr );
+ UIP_LOG( "ip: invalid version or header length." );
+ goto drop;
+ }
+
+ #endif /* UIP_CONF_IPV6 */
+
+ /* Check the size of the packet. If the size reported to us in
+ uip_len is smaller the size reported in the IP header, we assume
+ that the packet has been corrupted in transit. If the size of
+ uip_len is larger than the size reported in the IP packet header,
+ the packet has been padded and we set uip_len to the correct
+ value.. */
+ if( (BUF->len[0] << 8) + BUF->len[1] <= uip_len )
+ {
+ uip_len = ( BUF->len[0] << 8 ) + BUF->len[1];
+ #if UIP_CONF_IPV6
+ uip_len += 40; /* The length reported in the IPv6 header is the
+ length of the payload that follows the
+ header. However, uIP uses the uip_len variable
+ for holding the size of the entire packet,
+ including the IP header. For IPv4 this is not a
+ problem as the length field in the IPv4 header
+ contains the length of the entire packet. But
+ for IPv6 we need to add the size of the IPv6
+ header (40 bytes). */
+ #endif /* UIP_CONF_IPV6 */
+ }
+ else
+ {
+ UIP_LOG( "ip: packet shorter than reported in IP header." );
+ goto drop;
+ }
+
+ #if !UIP_CONF_IPV6
+
+ /* Check the fragment flag. */
+ if( (BUF->ipoffset[0] & 0x3f) != 0 || BUF->ipoffset[1] != 0 )
+ {
+ #if UIP_REASSEMBLY
+ uip_len = uip_reass();
+ if( uip_len == 0 )
+ {
+ goto drop;
+ }
+
+ #else /* UIP_REASSEMBLY */
+ UIP_STAT( ++uip_stat.ip.drop );
+ UIP_STAT( ++uip_stat.ip.fragerr );
+ UIP_LOG( "ip: fragment dropped." );
+ goto drop;
+ #endif /* UIP_REASSEMBLY */
+ }
+
+ #endif /* UIP_CONF_IPV6 */
+
+ if( uip_ipaddr_cmp(uip_hostaddr, all_zeroes_addr) )
+ {
+ /* 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 && !UIP_CONF_IPV6
+ if( BUF->proto == UIP_PROTO_ICMP )
+ {
+ UIP_LOG( "ip: possible ping config packet received." );
+ goto icmp_input;
+ }
+ else
+ {
+ UIP_LOG( "ip: packet dropped since no address assigned." );
+ goto drop;
+ }
+
+ #endif /* UIP_PINGADDRCONF */
+ }
+ else
+ {
+ /* If IP broadcast support is configured, we check for a broadcast
+ UDP packet, which may be destined to us. */
+ #if UIP_BROADCAST
+ DEBUG_PRINTF( "UDP IP checksum 0x%04x\n", uip_ipchksum() );
+ if( BUF->proto == UIP_PROTO_UDP && uip_ipaddr_cmp(BUF->destipaddr, all_ones_addr) /*&&
+ uip_ipchksum() == 0xffff*/ )
+ {
+ goto udp_input;
+ }
+
+ #endif /* UIP_BROADCAST */
+
+ /* Check if the packet is destined for our IP address. */
+ #if !UIP_CONF_IPV6
+ if( !uip_ipaddr_cmp(BUF->destipaddr, uip_hostaddr) )
+ {
+ UIP_STAT( ++uip_stat.ip.drop );
+ goto drop;
+ }
+
+ #else /* UIP_CONF_IPV6 */
+
+ /* For IPv6, packet reception is a little trickier as we need to
+ make sure that we listen to certain multicast addresses (all
+ hosts multicast address, and the solicited-node multicast
+ address) as well. However, we will cheat here and accept all
+ multicast packets that are sent to the ff02::/16 addresses. */
+ if( !uip_ipaddr_cmp(BUF->destipaddr, uip_hostaddr) && BUF->destipaddr[0] != HTONS(0xff02) )
+ {
+ UIP_STAT( ++uip_stat.ip.drop );
+ goto drop;
+ }
+
+ #endif /* UIP_CONF_IPV6 */
+ }
+
+ #if !UIP_CONF_IPV6
+ if( uip_ipchksum() != 0xffff )
+ { /* Compute and check the IP header
+ checksum. */
+ UIP_STAT( ++uip_stat.ip.drop );
+ UIP_STAT( ++uip_stat.ip.chkerr );
+ UIP_LOG( "ip: bad checksum." );
+ goto drop;
+ }
+
+ #endif /* UIP_CONF_IPV6 */
+
+ if( BUF->proto == UIP_PROTO_TCP )
+ { /* Check for TCP packet. If so,
+ proceed with TCP input
+ processing. */
+ goto tcp_input;
+ }
+
+ #if UIP_UDP
+ if( BUF->proto == UIP_PROTO_UDP )
+ {
+ goto udp_input;
+ }
+
+ #endif /* UIP_UDP */
+
+ #if !UIP_CONF_IPV6
+
+ /* ICMPv4 processing code follows. */
+ if( BUF->proto != UIP_PROTO_ICMP )
+ { /* We only allow ICMP packets from
+ here. */
+ UIP_STAT( ++uip_stat.ip.drop );
+ UIP_STAT( ++uip_stat.ip.protoerr );
+ UIP_LOG( "ip: neither tcp nor icmp." );
+ goto drop;
+ }
+
+ #if UIP_PINGADDRCONF
+ icmp_input :
+ #endif /* UIP_PINGADDRCONF */
+ UIP_STAT( ++uip_stat.icmp.recv );
+
+ /* ICMP echo (i.e., ping) processing. This is simple, we only change
+ the ICMP type from ECHO to ECHO_REPLY and adjust the ICMP
+ checksum before we return the packet. */
+ if( ICMPBUF->type != ICMP_ECHO )
+ {
+ UIP_STAT( ++uip_stat.icmp.drop );
+ UIP_STAT( ++uip_stat.icmp.typeerr );
+ UIP_LOG( "icmp: not icmp echo." );
+ goto drop;
+ }
+
+ /* If we are configured to use ping IP address assignment, we use
+ the destination IP address of this ping packet and assign it to
+ ourself. */
+ #if UIP_PINGADDRCONF
+ if( (uip_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. */
+ uip_ipaddr_copy( BUF->destipaddr, BUF->srcipaddr );
+ uip_ipaddr_copy( BUF->srcipaddr, uip_hostaddr );
+
+ UIP_STAT( ++uip_stat.icmp.sent );
+ goto send;
+
+ /* End of IPv4 input header processing code. */
+ #else /* !UIP_CONF_IPV6 */
+
+ /* This is IPv6 ICMPv6 processing code. */
+ DEBUG_PRINTF( "icmp6_input: length %d\n", uip_len );
+
+ if( BUF->proto != UIP_PROTO_ICMP6 )
+ { /* We only allow ICMPv6 packets from
+ here. */
+ UIP_STAT( ++uip_stat.ip.drop );
+ UIP_STAT( ++uip_stat.ip.protoerr );
+ UIP_LOG( "ip: neither tcp nor icmp6." );
+ goto drop;
+ }
+
+ UIP_STAT( ++uip_stat.icmp.recv );
+
+ /* If we get a neighbor solicitation for our address we should send
+ a neighbor advertisement message back. */
+ if( ICMPBUF->type == ICMP6_NEIGHBOR_SOLICITATION )
+ {
+ if( uip_ipaddr_cmp(ICMPBUF->icmp6data, uip_hostaddr) )
+ {
+ if( ICMPBUF->options[0] == ICMP6_OPTION_SOURCE_LINK_ADDRESS )
+ {
+ /* Save the sender's address in our neighbor list. */
+ uip_neighbor_add( ICMPBUF->srcipaddr, &(ICMPBUF->options[2]) );
+ }
+
+ /* We should now send a neighbor advertisement back to where the
+ neighbor solicication came from. */
+ ICMPBUF->type = ICMP6_NEIGHBOR_ADVERTISEMENT;
+ ICMPBUF->flags = ICMP6_FLAG_S; /* Solicited flag. */
+
+ ICMPBUF->reserved1 = ICMPBUF->reserved2 = ICMPBUF->reserved3 = 0;
+
+ uip_ipaddr_copy( ICMPBUF->destipaddr, ICMPBUF->srcipaddr );
+ uip_ipaddr_copy( ICMPBUF->srcipaddr, uip_hostaddr );
+ ICMPBUF->options[0] = ICMP6_OPTION_TARGET_LINK_ADDRESS;
+ ICMPBUF->options[1] = 1; /* Options length, 1 = 8 bytes. */
+ memcpy( &(ICMPBUF->options[2]), &uip_ethaddr, sizeof(uip_ethaddr) );
+ ICMPBUF->icmpchksum = 0;
+ ICMPBUF->icmpchksum = ~uip_icmp6chksum();
+ goto send;
+ }
+
+ goto drop;
+ }
+ else if( ICMPBUF->type == ICMP6_ECHO )
+ {
+ /* ICMP echo (i.e., ping) processing. This is simple, we only
+ change the ICMP type from ECHO to ECHO_REPLY and update the
+ ICMP checksum before we return the packet. */
+ ICMPBUF->type = ICMP6_ECHO_REPLY;
+
+ uip_ipaddr_copy( BUF->destipaddr, BUF->srcipaddr );
+ uip_ipaddr_copy( BUF->srcipaddr, uip_hostaddr );
+ ICMPBUF->icmpchksum = 0;
+ ICMPBUF->icmpchksum = ~uip_icmp6chksum();
+
+ UIP_STAT( ++uip_stat.icmp.sent );
+ goto send;
+ }
+ else
+ {
+ DEBUG_PRINTF( "Unknown icmp6 message type %d\n", ICMPBUF->type );
+ UIP_STAT( ++uip_stat.icmp.drop );
+ UIP_STAT( ++uip_stat.icmp.typeerr );
+ UIP_LOG( "icmp: unknown ICMP message." );
+ goto drop;
+ }
+
+ /* End of IPv6 ICMP processing. */
+ #endif /* !UIP_CONF_IPV6 */
+
+ #if UIP_UDP
+
+ /* UDP input processing. */
+ udp_input :
+ /* UDP processing is really just a hack. We don't do anything to the
+ UDP/IP headers, but let the UDP application do all the hard
+ work. If the application sets uip_slen, it has a packet to
+ send. */
+ #if UIP_UDP_CHECKSUMS
+ uip_len = uip_len - UIP_IPUDPH_LEN;
+ uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
+ if( UDPBUF->udpchksum != 0 && uip_udpchksum() != 0xffff )
+ {
+ UIP_STAT( ++uip_stat.udp.drop );
+ UIP_STAT( ++uip_stat.udp.chkerr );
+ UIP_LOG( "udp: bad checksum." );
+ goto drop;
+ }
+
+ #else /* UIP_UDP_CHECKSUMS */
+ uip_len = uip_len - UIP_IPUDPH_LEN;
+ #endif /* UIP_UDP_CHECKSUMS */
+
+ /* Demultiplex this UDP packet between the UDP "connections". */
+ for( uip_udp_conn = &uip_udp_conns[0]; uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS]; ++uip_udp_conn )
+ {
+ /* If the local UDP port is non-zero, the connection is considered
+ to be used. If so, the local port number is checked against the
+ destination port number in the received packet. If the two port
+ numbers match, the remote port number is checked if the
+ connection is bound to a remote port. Finally, if the
+ connection is bound to a remote IP address, the source IP
+ address of the packet is checked. */
+ if
+ (
+ uip_udp_conn->lport != 0 &&
+ UDPBUF->destport == uip_udp_conn->lport &&
+ (uip_udp_conn->rport == 0 || UDPBUF->srcport == uip_udp_conn->rport) &&
+ (
+ uip_ipaddr_cmp(uip_udp_conn->ripaddr, all_zeroes_addr) ||
+ uip_ipaddr_cmp(uip_udp_conn->ripaddr, all_ones_addr) ||
+ uip_ipaddr_cmp(BUF->srcipaddr, uip_udp_conn->ripaddr)
+ )
+ )
+ {
+ goto udp_found;
+ }
+ }
+
+ UIP_LOG( "udp: no matching connection found" );
+ goto drop;
+
+udp_found:
+ UIP_STAT( ++uip_stat.udp.recv );
+ uip_conn = NULL;
+ uip_flags = UIP_NEWDATA;
+ uip_sappdata = uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN];
+ uip_slen = 0;
+ UIP_UDP_APPCALL();
+udp_send:
+ if( uip_slen == 0 )
+ {
+ goto drop;
+ }
+
+ uip_len = uip_slen + UIP_IPUDPH_LEN;
+
+ #if UIP_CONF_IPV6
+
+ /* For IPv6, the IP length field does not include the IPv6 IP header
+ length. */
+ BUF->len[0] = ( (uip_len - UIP_IPH_LEN) >> 8 );
+ BUF->len[1] = ( (uip_len - UIP_IPH_LEN) & 0xff );
+ #else /* UIP_CONF_IPV6 */
+ BUF->len[0] = ( uip_len >> 8 );
+ BUF->len[1] = ( uip_len & 0xff );
+ #endif /* UIP_CONF_IPV6 */
+
+ BUF->ttl = uip_udp_conn->ttl;
+ BUF->proto = UIP_PROTO_UDP;
+
+ UDPBUF->udplen = HTONS( uip_slen + UIP_UDPH_LEN );
+ UDPBUF->udpchksum = 0;
+
+ BUF->srcport = uip_udp_conn->lport;
+ BUF->destport = uip_udp_conn->rport;
+
+ uip_ipaddr_copy( BUF->srcipaddr, uip_hostaddr );
+ uip_ipaddr_copy( BUF->destipaddr, uip_udp_conn->ripaddr );
+
+ uip_appdata = &uip_buf[UIP_LLH_LEN + UIP_IPTCPH_LEN];
+
+ #if UIP_UDP_CHECKSUMS
+
+ /* Calculate UDP checksum. */
+ UDPBUF->udpchksum = ~( uip_udpchksum() );
+ if( UDPBUF->udpchksum == 0 )
+ {
+ UDPBUF->udpchksum = 0xffff;
+ }
+
+ #endif /* UIP_UDP_CHECKSUMS */
+ UIP_STAT( ++uip_stat.udp.sent );
+ goto ip_send_nolen;
+ #endif /* UIP_UDP */
+
+ /* TCP input processing. */
+ 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 - 1]; ++uip_connr )
+ {
+ if
+ (
+ uip_connr->tcpstateflags != UIP_CLOSED &&
+ BUF->destport == uip_connr->lport &&
+ BUF->srcport == uip_connr->rport &&
+ uip_ipaddr_cmp(BUF->srcipaddr, uip_connr->ripaddr)
+ )
+ {
+ goto found;
+ }
+ }
+
+ /* If we didn't find 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 = UIP_IPTCPH_LEN;
+ BUF->tcpoffset = 5 << 4;
+
+ /* Flip the seqno and ackno fields in the TCP header. */
+ c = BUF->seqno[3];
+ BUF->seqno[3] = BUF->ackno[3];
+ BUF->ackno[3] = c;
+
+ c = BUF->seqno[2];
+ BUF->seqno[2] = BUF->ackno[2];
+ BUF->ackno[2] = c;
+
+ c = BUF->seqno[1];
+ BUF->seqno[1] = BUF->ackno[1];
+ BUF->ackno[1] = c;
+
+ c = BUF->seqno[0];
+ BUF->seqno[0] = BUF->ackno[0];
+ BUF->ackno[0] = c;
+
+ /* We also have to increase the sequence number we are
+ acknowledging. If the least significant byte overflowed, we need
+ to propagate the carry to the other bytes as well. */
+ if( ++BUF->ackno[3] == 0 )
+ {
+ if( ++BUF->ackno[2] == 0 )
+ {
+ if( ++BUF->ackno[1] == 0 )
+ {
+ ++BUF->ackno[0];
+ }
+ }
+ }
+
+ /* Swap port numbers. */
+ tmp16 = BUF->srcport;
+ BUF->srcport = BUF->destport;
+ BUF->destport = tmp16;
+
+ /* Swap IP addresses. */
+ uip_ipaddr_copy( BUF->destipaddr, BUF->srcipaddr );
+ uip_ipaddr_copy( BUF->srcipaddr, uip_hostaddr );
+
+ /* And send out the RST packet! */
+ goto tcp_send_noconn;
+
+ /* This label will be jumped to if we matched the incoming packet
+ with a connection in LISTEN. In that case, we should create a new
+ connection and send a SYNACK in return. */
+found_listen:
+ /* First we check if there are any connections avaliable. Unused
+ connections are kept in the same table as used connections, but
+ unused ones have the tcpstate set to CLOSED. Also, connections in
+ TIME_WAIT are kept track of and we'll use the oldest one if no
+ CLOSED connections are found. Thanks to Eddie C. Dost for a very
+ nice algorithm for the TIME_WAIT search. */
+ uip_connr = 0;
+ for( c = 0; c < UIP_CONNS; ++c )
+ {
+ if( uip_conns[c].tcpstateflags == UIP_CLOSED )
+ {
+ uip_connr = &uip_conns[c];
+ break;
+ }
+
+ if( uip_conns[c].tcpstateflags == UIP_TIME_WAIT )
+ {
+ if( uip_connr == 0 || uip_conns[c].timer > uip_connr->timer )
+ {
+ uip_connr = &uip_conns[c];
+ }
+ }
+ }
+
+ if( uip_connr == 0 )
+ {
+ /* All connections are used already, we drop packet and hope that
+ the remote end will retransmit the packet at a time when we
+ have more spare connections. */
+ UIP_STAT( ++uip_stat.tcp.syndrop );
+ UIP_LOG( "tcp: found no unused connections." );
+ goto drop;
+ }
+
+ uip_conn = uip_connr;
+
+ /* Fill in the necessary fields for the new connection. */
+ uip_connr->rto = uip_connr->timer = UIP_RTO;
+ uip_connr->sa = 0;
+ uip_connr->sv = 4;
+ uip_connr->nrtx = 0;
+ uip_connr->lport = BUF->destport;
+ uip_connr->rport = BUF->srcport;
+ uip_ipaddr_copy( uip_connr->ripaddr, BUF->srcipaddr );
+ uip_connr->tcpstateflags = UIP_SYN_RCVD;
+
+ uip_connr->snd_nxt[0] = iss[0];
+ uip_connr->snd_nxt[1] = iss[1];
+ uip_connr->snd_nxt[2] = iss[2];
+ uip_connr->snd_nxt[3] = iss[3];
+ uip_connr->len = 1;
+
+ /* rcv_nxt should be the seqno from the incoming packet + 1. */
+ uip_connr->rcv_nxt[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 == TCP_OPT_END )
+ {
+ /* End of options. */
+ break;
+ }
+ else if( opt == TCP_OPT_NOOP )
+ {
+ ++c;
+
+ /* NOP option. */
+ }
+ else if( opt == TCP_OPT_MSS && uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == TCP_OPT_MSS_LEN )
+ {
+ /* An MSS option with the right option length. */
+ tmp16 = ( (u16_t) uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8 ) | ( u16_t ) uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN + 3 + c];
+ uip_connr->initialmss = uip_connr->mss = tmp16 > UIP_TCP_MSS ? UIP_TCP_MSS : tmp16;
+
+ /* And we are done processing options. */
+ break;
+ }
+ else
+ {
+ /* All other options have a length field, so that we easily
+ can skip past them. */
+ if( uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0 )
+ {
+ /* If the length field is zero, the options are malformed
+ and we don't process them further. */
+ break;
+ }
+
+ c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c];
+ }
+ }
+ }
+
+ /* Our response will be a SYNACK. */
+ #if UIP_ACTIVE_OPEN
+ tcp_send_synack : BUF->flags = TCP_ACK;
+
+tcp_send_syn:
+ BUF->flags |= TCP_SYN;
+ #else /* UIP_ACTIVE_OPEN */
+ tcp_send_synack : BUF->flags = TCP_SYN | TCP_ACK;
+ #endif /* UIP_ACTIVE_OPEN */
+
+ /* We send out the TCP Maximum Segment Size option with our
+ SYNACK. */
+ BUF->optdata[0] = TCP_OPT_MSS;
+ BUF->optdata[1] = TCP_OPT_MSS_LEN;
+ BUF->optdata[2] = ( UIP_TCP_MSS ) / 256;
+ BUF->optdata[3] = ( UIP_TCP_MSS ) & 255;
+ uip_len = UIP_IPTCPH_LEN + TCP_OPT_MSS_LEN;
+ BUF->tcpoffset = ( (UIP_TCPH_LEN + TCP_OPT_MSS_LEN) / 4 ) << 4;
+ goto tcp_send;
+
+ /* This label will be jumped to if we found an active connection. */
+found:
+ uip_conn = uip_connr;
+ uip_flags = 0;
+
+ /* We do a very naive form of TCP reset processing; we just accept
+ any RST and kill our connection. We should in fact check if the
+ sequence number of this reset is wihtin our advertised window
+ before we accept the reset. */
+ if( BUF->flags & TCP_RST )
+ {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ UIP_LOG( "tcp: got reset, aborting connection." );
+ uip_flags = UIP_ABORT;
+ UIP_APPCALL();
+ goto drop;
+ }
+
+ /* 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 - UIP_IPH_LEN;
+
+ /* First, check if the sequence number of the incoming packet is
+ what we're expecting next. If not, we send out an ACK with the
+ correct numbers in. */
+ if( !(((uip_connr->tcpstateflags & UIP_TS_MASK) == UIP_SYN_SENT) && ((BUF->flags & TCP_CTL) == (TCP_SYN | TCP_ACK))) )
+ {
+ if
+ (
+ (uip_len > 0 || ((BUF->flags & (TCP_SYN | TCP_FIN)) != 0)) &&
+ (
+ BUF->seqno[0] != uip_connr->rcv_nxt[0] ||
+ BUF->seqno[1] != uip_connr->rcv_nxt[1] ||
+ BUF->seqno[2] != uip_connr->rcv_nxt[2] ||
+ BUF->seqno[3] != uip_connr->rcv_nxt[3]
+ )
+ )
+ {
+ goto tcp_send_ack;
+ }
+ }
+
+ /* Next, check if the incoming segment acknowledges any outstanding
+ data. If so, we update the sequence number, reset the length of
+ the outstanding data, calculate RTT estimations, and reset the
+ retransmission timer. */
+ if( (BUF->flags & TCP_ACK) && uip_outstanding(uip_connr) )
+ {
+ uip_add32( uip_connr->snd_nxt, uip_connr->len );
+
+ if
+ (
+ BUF->ackno[0] == uip_acc32[0] &&
+ BUF->ackno[1] == uip_acc32[1] &&
+ BUF->ackno[2] == uip_acc32[2] &&
+ BUF->ackno[3] == uip_acc32[3]
+ )
+ {
+ /* Update sequence number. */
+ uip_connr->snd_nxt[0] = uip_acc32[0];
+ uip_connr->snd_nxt[1] = uip_acc32[1];
+ uip_connr->snd_nxt[2] = uip_acc32[2];
+ uip_connr->snd_nxt[3] = uip_acc32[3];
+
+ /* Do RTT estimation, unless we have done retransmissions. */
+ if( uip_connr->nrtx == 0 )
+ {
+ signed char m;
+ m = uip_connr->rto - uip_connr->timer;
+
+ /* This is taken directly from VJs original code in his paper */
+ m = m - ( uip_connr->sa >> 3 );
+ uip_connr->sa += m;
+ if( m < 0 )
+ {
+ m = -m;
+ }
+
+ m = m - ( uip_connr->sv >> 2 );
+ uip_connr->sv += m;
+ uip_connr->rto = ( uip_connr->sa >> 3 ) + uip_connr->sv;
+ }
+
+ /* Set the acknowledged flag. */
+ uip_flags = UIP_ACKDATA;
+
+ /* Reset the retransmission timer. */
+ uip_connr->timer = uip_connr->rto;
+
+ /* Reset length of outstanding data. */
+ uip_connr->len = 0;
+ }
+ }
+
+ /* Do different things depending on in what state the connection is. */
+ switch( uip_connr->tcpstateflags & UIP_TS_MASK )
+ {
+ /* CLOSED and LISTEN are not handled here. CLOSE_WAIT is not
+ implemented, since we force the application to close when the
+ peer sends a FIN (hence the application goes directly from
+ ESTABLISHED to LAST_ACK). */
+ case UIP_SYN_RCVD:
+ /* In SYN_RCVD we have sent out a SYNACK in response to a SYN, and
+ we are waiting for an ACK that acknowledges the data we sent
+ out the last time. Therefore, we want to have the UIP_ACKDATA
+ flag set. If so, we enter the ESTABLISHED state. */
+ if( uip_flags & UIP_ACKDATA )
+ {
+ uip_connr->tcpstateflags = UIP_ESTABLISHED;
+ uip_flags = UIP_CONNECTED;
+ uip_connr->len = 0;
+ if( uip_len > 0 )
+ {
+ uip_flags |= UIP_NEWDATA;
+ uip_add_rcv_nxt( uip_len );
+ }
+
+ uip_slen = 0;
+ UIP_APPCALL();
+ goto appsend;
+ }
+
+ goto drop;
+ #if UIP_ACTIVE_OPEN
+
+ case UIP_SYN_SENT:
+ /* In SYN_SENT, we wait for a SYNACK that is sent in response to
+ our SYN. The rcv_nxt is set to sequence number in the SYNACK
+ plus one, and we send an ACK. We move into the ESTABLISHED
+ state. */
+ if( (uip_flags & UIP_ACKDATA) && (BUF->flags & TCP_CTL) == (TCP_SYN | TCP_ACK) )
+ {
+ /* Parse the TCP MSS option, if present. */
+ if( (BUF->tcpoffset & 0xf0) > 0x50 )
+ {
+ for( c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2; )
+ {
+ opt = uip_buf[UIP_IPTCPH_LEN + UIP_LLH_LEN + c];
+ if( opt == TCP_OPT_END )
+ {
+ /* End of options. */
+ break;
+ }
+ else if( opt == TCP_OPT_NOOP )
+ {
+ ++c;
+
+ /* NOP option. */
+ }
+ else if( opt == TCP_OPT_MSS && uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == TCP_OPT_MSS_LEN )
+ {
+ /* An MSS option with the right option length. */
+ tmp16 = ( uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8 ) | uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 3 + c];
+ uip_connr->initialmss = uip_connr->mss = tmp16 > UIP_TCP_MSS ? UIP_TCP_MSS : tmp16;
+
+ /* And we are done processing options. */
+ break;
+ }
+ else
+ {
+ /* All other options have a length field, so that we easily
+ can skip past them. */
+ if( uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0 )
+ {
+ /* If the length field is zero, the options are malformed
+ and we don't process them further. */
+ break;
+ }
+
+ c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c];
+ }
+ }
+ }
+
+ uip_connr->tcpstateflags = UIP_ESTABLISHED;
+ uip_connr->rcv_nxt[0] = BUF->seqno[0];
+ uip_connr->rcv_nxt[1] = BUF->seqno[1];
+ uip_connr->rcv_nxt[2] = BUF->seqno[2];
+ uip_connr->rcv_nxt[3] = BUF->seqno[3];
+ uip_add_rcv_nxt( 1 );
+ uip_flags = UIP_CONNECTED | UIP_NEWDATA;
+ uip_connr->len = 0;
+ uip_len = 0;
+ uip_slen = 0;
+ UIP_APPCALL();
+ goto appsend;
+ }
+
+ /* Inform the application that the connection failed */
+ uip_flags = UIP_ABORT;
+ UIP_APPCALL();
+
+ /* The connection is closed after we send the RST */
+ uip_conn->tcpstateflags = UIP_CLOSED;
+ goto reset;
+ #endif /* UIP_ACTIVE_OPEN */
+
+ case UIP_ESTABLISHED:
+ /* In the ESTABLISHED state, we call upon the application to feed
+ data into the uip_buf. If the UIP_ACKDATA flag is set, the
+ application should put new data into the buffer, otherwise we are
+ retransmitting an old segment, and the application should put that
+ data into the buffer.
+
+ If the incoming packet is a FIN, we should close the connection on
+ this side as well, and we send out a FIN and enter the LAST_ACK
+ state. We require that there is no outstanding data; otherwise the
+ sequence numbers will be screwed up. */
+ if( BUF->flags & TCP_FIN && !(uip_connr->tcpstateflags & UIP_STOPPED) )
+ {
+ if( uip_outstanding(uip_connr) )
+ {
+ goto drop;
+ }
+
+ uip_add_rcv_nxt( 1 + uip_len );
+ uip_flags |= UIP_CLOSE;
+ if( uip_len > 0 )
+ {
+ uip_flags |= UIP_NEWDATA;
+ }
+
+ UIP_APPCALL();
+ uip_connr->len = 1;
+ uip_connr->tcpstateflags = UIP_LAST_ACK;
+ uip_connr->nrtx = 0;
+ tcp_send_finack:
+ BUF->flags = TCP_FIN | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ /* Check the URG flag. If this is set, the segment carries urgent
+ data that we must pass to the application. */
+ if( (BUF->flags & TCP_URG) != 0 )
+ {
+ #if UIP_URGDATA > 0
+ uip_urglen = ( BUF->urgp[0] << 8 ) | BUF->urgp[1];
+ if( uip_urglen > uip_len )
+ {
+ /* There is more urgent data in the next segment to come. */
+ uip_urglen = uip_len;
+ }
+
+ uip_add_rcv_nxt( uip_urglen );
+ uip_len -= uip_urglen;
+ uip_urgdata = uip_appdata;
+ uip_appdata += uip_urglen;
+ }
+ else
+ {
+ uip_urglen = 0;
+ #else /* UIP_URGDATA > 0 */
+ uip_appdata = ( ( char * ) uip_appdata ) + ( (BUF->urgp[0] << 8) | BUF->urgp[1] );
+ uip_len -= ( BUF->urgp[0] << 8 ) | BUF->urgp[1];
+ #endif /* UIP_URGDATA > 0 */
+ }
+
+ /* If uip_len > 0 we have TCP data in the packet, and we flag this
+ by setting the UIP_NEWDATA flag and update the sequence number
+ we acknowledge. If the application has stopped the dataflow
+ using uip_stop(), we must not accept any data packets from the
+ remote host. */
+ if( uip_len > 0 && !(uip_connr->tcpstateflags & UIP_STOPPED) )
+ {
+ uip_flags |= UIP_NEWDATA;
+ uip_add_rcv_nxt( uip_len );
+ }
+
+ /* Check if the available buffer space advertised by the other end
+ is smaller than the initial MSS for this connection. If so, we
+ set the current MSS to the window size to ensure that the
+ application does not send more data than the other end can
+ handle.
+
+ If the remote host advertises a zero window, we set the MSS to
+ the initial MSS so that the application will send an entire MSS
+ of data. This data will not be acknowledged by the receiver,
+ and the application will retransmit it. This is called the
+ "persistent timer" and uses the retransmission mechanim.
+ */
+ tmp16 = ( (u16_t) BUF->wnd[0] << 8 ) + ( u16_t ) BUF->wnd[1];
+ if( tmp16 > (uip_connr->initialmss * FRAME_MULTIPLE) || tmp16 == 0 )
+ {
+ tmp16 = uip_connr->initialmss * FRAME_MULTIPLE;
+ }
+
+ uip_connr->mss = tmp16;
+
+ /* If this packet constitutes an ACK for outstanding data (flagged
+ by the UIP_ACKDATA flag, we should call the application since it
+ might want to send more data. If the incoming packet had data
+ from the peer (as flagged by the UIP_NEWDATA flag), the
+ application must also be notified.
+
+ When the application is called, the global variable uip_len
+ contains the length of the incoming data. The application can
+ access the incoming data through the global pointer
+ uip_appdata, which usually points UIP_IPTCPH_LEN + UIP_LLH_LEN
+ bytes into the uip_buf array.
+
+ If the application wishes to send any data, this data should be
+ put into the uip_appdata and the length of the data should be
+ put into uip_len. If the application don't have any data to
+ send, uip_len must be set to 0. */
+ if( uip_flags & (UIP_NEWDATA | UIP_ACKDATA) )
+ {
+ uip_slen = 0;
+ UIP_APPCALL();
+
+ appsend:
+ if( uip_flags & UIP_ABORT )
+ {
+ uip_slen = 0;
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ BUF->flags = TCP_RST | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ if( uip_flags & UIP_CLOSE )
+ {
+ uip_slen = 0;
+ uip_connr->len = 1;
+ uip_connr->tcpstateflags = UIP_FIN_WAIT_1;
+ uip_connr->nrtx = 0;
+ BUF->flags = TCP_FIN | TCP_ACK;
+ goto tcp_send_nodata;
+ }
+
+ /* If uip_slen > 0, the application has data to be sent. */
+ if( uip_slen > 0 )
+ {
+ /* If the connection has acknowledged data, the contents of
+ the ->len variable should be discarded. */
+ if( (uip_flags & UIP_ACKDATA) != 0 )
+ {
+ uip_connr->len = 0;
+ }
+
+ /* If the ->len variable is non-zero the connection has
+ already data in transit and cannot send anymore right
+ now. */
+ if( uip_connr->len == 0 )
+ {
+ /* The application cannot send more than what is allowed by
+ the mss (the minumum of the MSS and the available
+ window). */
+ if( uip_slen > uip_connr->mss )
+ {
+ uip_slen = uip_connr->mss;
+ }
+
+ /* Remember how much data we send out now so that we know
+ when everything has been acknowledged. */
+ uip_connr->len = uip_slen;
+ }
+ else
+ {
+ /* If the application already had unacknowledged data, we
+ make sure that the application does not send (i.e.,
+ retransmit) out more than it previously sent out. */
+ uip_slen = uip_connr->len;
+ }
+ }
+
+ uip_connr->nrtx = 0;
+ apprexmit:
+ uip_appdata = uip_sappdata;
+
+ /* If the application has data to be sent, or if the incoming
+ packet had new data in it, we must send out a packet. */
+ if( uip_slen > 0 && uip_connr->len > 0 )
+ {
+ /* Add the length of the IP and TCP headers. */
+ uip_len = uip_connr->len + UIP_TCPIP_HLEN;
+
+ /* We always set the ACK flag in response packets. */
+ BUF->flags = TCP_ACK | TCP_PSH;
+
+ /* Send the packet. */
+ goto tcp_send_noopts;
+ }
+
+ /* If there is no data to send, just send out a pure ACK if
+ there is newdata. */
+ if( uip_flags & UIP_NEWDATA )
+ {
+ uip_len = UIP_TCPIP_HLEN;
+ BUF->flags = TCP_ACK;
+ goto tcp_send_noopts;
+ }
+ }
+
+ goto drop;
+
+ case UIP_LAST_ACK:
+ /* We can close this connection if the peer has acknowledged our
+ FIN. This is indicated by the UIP_ACKDATA flag. */
+ if( uip_flags & UIP_ACKDATA )
+ {
+ uip_connr->tcpstateflags = UIP_CLOSED;
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ }
+
+ break;
+
+ case UIP_FIN_WAIT_1:
+ /* The application has closed the connection, but the remote host
+ hasn't closed its end yet. Thus we do nothing but wait for a
+ FIN from the other side. */
+ if( uip_len > 0 )
+ {
+ uip_add_rcv_nxt( uip_len );
+ }
+
+ if( BUF->flags & TCP_FIN )
+ {
+ if( uip_flags & UIP_ACKDATA )
+ {
+ uip_connr->tcpstateflags = UIP_TIME_WAIT;
+ uip_connr->timer = 0;
+ uip_connr->len = 0;
+ }
+ else
+ {
+ uip_connr->tcpstateflags = UIP_CLOSING;
+ }
+
+ uip_add_rcv_nxt( 1 );
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ goto tcp_send_ack;
+ }
+ else if( uip_flags & UIP_ACKDATA )
+ {
+ uip_connr->tcpstateflags = UIP_FIN_WAIT_2;
+ uip_connr->len = 0;
+ goto drop;
+ }
+
+ if( uip_len > 0 )
+ {
+ goto tcp_send_ack;
+ }
+
+ goto drop;
+
+ case UIP_FIN_WAIT_2:
+ if( uip_len > 0 )
+ {
+ uip_add_rcv_nxt( uip_len );
+ }
+
+ if( BUF->flags & TCP_FIN )
+ {
+ uip_connr->tcpstateflags = UIP_TIME_WAIT;
+ uip_connr->timer = 0;
+ uip_add_rcv_nxt( 1 );
+ uip_flags = UIP_CLOSE;
+ UIP_APPCALL();
+ goto tcp_send_ack;
+ }
+
+ if( uip_len > 0 )
+ {
+ goto tcp_send_ack;
+ }
+
+ goto drop;
+
+ case UIP_TIME_WAIT:
+ goto tcp_send_ack;
+
+ case UIP_CLOSING:
+ if( uip_flags & UIP_ACKDATA )
+ {
+ uip_connr->tcpstateflags = UIP_TIME_WAIT;
+ uip_connr->timer = 0;
+ }
+ }
+
+ goto drop;
+
+ /* We jump here when we are ready to send the packet, and just want
+ to set the appropriate TCP sequence numbers in the TCP header. */
+tcp_send_ack:
+ BUF->flags = TCP_ACK;
+tcp_send_nodata:
+ uip_len = UIP_IPTCPH_LEN;
+tcp_send_noopts:
+ BUF->tcpoffset = ( UIP_TCPH_LEN / 4 ) << 4;
+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;
+
+ uip_ipaddr_copy( BUF->srcipaddr, uip_hostaddr );
+ uip_ipaddr_copy( BUF->destipaddr, uip_connr->ripaddr );
+
+ if( uip_connr->tcpstateflags & UIP_STOPPED )
+ {
+ /* If the connection has issued uip_stop(), we advertise a zero
+ window so that the remote host will stop sending data. */
+ BUF->wnd[0] = BUF->wnd[1] = 0;
+ }
+ else
+ {
+ BUF->wnd[0] = ( (UIP_RECEIVE_WINDOW) >> 8 );
+ BUF->wnd[1] = ( (UIP_RECEIVE_WINDOW) & 0xff );
+ }
+
+tcp_send_noconn:
+ BUF->ttl = UIP_TTL;
+ #if UIP_CONF_IPV6
+
+ /* For IPv6, the IP length field does not include the IPv6 IP header
+ length. */
+ BUF->len[0] = ( (uip_len - UIP_IPH_LEN) >> 8 );
+ BUF->len[1] = ( (uip_len - UIP_IPH_LEN) & 0xff );
+ #else /* UIP_CONF_IPV6 */
+ BUF->len[0] = ( uip_len >> 8 );
+ BUF->len[1] = ( uip_len & 0xff );
+ #endif /* UIP_CONF_IPV6 */
+
+ BUF->urgp[0] = BUF->urgp[1] = 0;
+
+ /* Calculate TCP checksum. */
+ BUF->tcpchksum = 0;
+ BUF->tcpchksum = ~( uip_tcpchksum() );
+
+ #if UIP_UDP
+ ip_send_nolen :
+ #endif
+ #if UIP_CONF_IPV6
+ BUF->vtc = 0x60;
+ BUF->tcflow = 0x00;
+ BUF->flow = 0x00;
+ #else /* UIP_CONF_IPV6 */
+ BUF->vhl = 0x45;
+ BUF->tos = 0;
+ BUF->ipoffset[0] = BUF->ipoffset[1] = 0;
+ ++ipid;
+ BUF->ipid[0] = ipid >> 8;
+ BUF->ipid[1] = ipid & 0xff;
+
+ /* Calculate IP checksum. */
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~( uip_ipchksum() );
+ DEBUG_PRINTF( "uip ip_send_nolen: chkecum 0x%04x\n", uip_ipchksum() );
+ #endif /* UIP_CONF_IPV6 */
+
+ UIP_STAT( ++uip_stat.tcp.sent );
+send:
+ DEBUG_PRINTF( "Sending packet with length %d (%d)\n", uip_len, (BUF->len[0] << 8) | BUF->len[1] );
+
+ UIP_STAT( ++uip_stat.ip.sent );
+
+ /* Return and let the caller do the actual transmission. */
+ uip_flags = 0;
+ return;
+drop:
+ uip_len = 0;
+ uip_flags = 0;
+ return;
+}
+
+/*---------------------------------------------------------------------------*/
+u16_t htons( u16_t val )
+{
+ return HTONS( val );
+}
+
+/*---------------------------------------------------------------------------*/
+void uip_send( const void *data, int len )
+{
+ if( len > 0 )
+ {
+ uip_slen = len;
+ if( data != uip_sappdata )
+ {
+ memcpy( uip_sappdata, (data), uip_slen );
+ }
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+int uip_fast_send( int xARP )
+{
+ ( void ) xARP;
+ #if NOT_YET_COMPLETE
+
+ u16_t tcplen, len1 = 0, uiAccumulatedLen = 0, len_previous = 0, split_len;
+ int iSplitNo = 0;
+ extern int uip_low_level_output( unsigned char *pcBuf, int ilen );
+
+ if( xARP == pdTRUE )
+ {
+ if( BUF->proto == UIP_PROTO_TCP && uip_slen > 1 )
+ {
+ tcplen = uip_len - UIP_TCPIP_HLEN;
+
+ if( tcplen > UIP_TCP_MSS )
+ {
+ split_len = UIP_TCP_MSS;
+ }
+ else
+ {
+ split_len = tcplen / 2;
+ }
+
+ while( tcplen > 0 )
+ {
+ uiAccumulatedLen += len1;
+
+ if( tcplen > split_len )
+ {
+ len1 = split_len;
+ tcplen -= split_len;
+ }
+ else
+ {
+ len1 = tcplen;
+ tcplen = 0;
+ }
+
+ uip_len = len1 + UIP_TCPIP_HLEN;
+ BUF->len[0] = uip_len >> 8;
+ BUF->len[1] = uip_len & 0xff;
+ if( iSplitNo == 0 )
+ {
+ iSplitNo++;
+
+ /* Create the first packet. This is done by altering the length
+ field of the IP header and updating the checksums. */
+ }
+ else
+ {
+ /* Now, create the second packet. To do this, it is not enough to
+ just alter the length field, but we must also update the TCP
+ sequence number and point the uip_appdata to a new place in
+ memory. This place is determined by the length of the first
+ packet (len1). */
+
+ /* uip_appdata += len1;*/
+ memcpy( uip_appdata, ( u8_t * ) uip_appdata + uiAccumulatedLen, len1 );
+ uip_add32( BUF->seqno, len_previous );
+ BUF->seqno[0] = uip_acc32[0];
+ BUF->seqno[1] = uip_acc32[1];
+ BUF->seqno[2] = uip_acc32[2];
+ BUF->seqno[3] = uip_acc32[3];
+ }
+
+ /* Recalculate the TCP checksum. */
+ BUF->tcpchksum = 0;
+ BUF->tcpchksum = ~( uip_tcpchksum() );
+
+ /* Recalculate the IP checksum. */
+ BUF->ipchksum = 0;
+ BUF->ipchksum = ~( uip_ipchksum() );
+
+ /* Transmit the packet. */
+ uip_arp_out();
+ uip_low_level_output( uip_buf, uip_len );
+
+ len_previous = len1;
+ }
+ }
+ else
+ {
+ uip_arp_out();
+ uip_low_level_output( uip_buf, uip_len );
+ }
+ }
+ else
+ {
+ uip_low_level_output( uip_buf, uip_len );
+ }
+
+ #endif
+ return 1;
+}
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip.h new file mode 100644 index 0000000..e8f173a --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip.h @@ -0,0 +1,1642 @@ +
+/**
+ * \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 1.40 2006/06/08 07:12:07 adam Exp $
+ *
+ */
+
+#ifndef __UIP_H__
+#define __UIP_H__
+
+#include "uipopt.h"
+
+/**
+ * Repressentation of an IP address.
+ *
+ */
+typedef u16_t uip_ip4addr_t[2];
+typedef u16_t uip_ip6addr_t[8];
+#if UIP_CONF_IPV6
+typedef uip_ip6addr_t uip_ipaddr_t;
+#else /* UIP_CONF_IPV6 */
+typedef uip_ip4addr_t uip_ipaddr_t;
+#endif /* UIP_CONF_IPV6 */
+
+/*---------------------------------------------------------------------------*/
+/* First, the functions that should be called from the
+ * system. Initialization, the periodic timer and incoming packets are
+ * handled by the following three functions.
+ */
+
+/**
+ * \defgroup uipconffunc uIP configuration functions
+ * @{
+ *
+ * The uIP configuration functions are used for setting run-time
+ * parameters in uIP such as IP addresses.
+ */
+
+/**
+ * Set the IP address of this host.
+ *
+ * The IP address is represented as a 4-byte array where the first
+ * octet of the IP address is put in the first member of the 4-byte
+ * array.
+ *
+ * Example:
+ \code
+
+ uip_ipaddr_t addr;
+
+ uip_ipaddr(&addr, 192,168,1,2);
+ uip_sethostaddr(&addr);
+
+ \endcode
+ * \param addr A pointer to an IP address of type uip_ipaddr_t;
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_sethostaddr(addr) uip_ipaddr_copy(uip_hostaddr, (addr))
+
+/**
+ * Get the IP address of this host.
+ *
+ * The IP address is represented as a 4-byte array where the first
+ * octet of the IP address is put in the first member of the 4-byte
+ * array.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t hostaddr;
+
+ uip_gethostaddr(&hostaddr);
+ \endcode
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the currently configured IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_gethostaddr(addr) uip_ipaddr_copy((addr), uip_hostaddr)
+
+/**
+ * Set the default router's IP address.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable containing the IP
+ * address of the default router.
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_setdraddr(addr) uip_ipaddr_copy(uip_draddr, (addr))
+
+/**
+ * Set the netmask.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable containing the IP
+ * address of the netmask.
+ *
+ * \sa uip_ipaddr()
+ *
+ * \hideinitializer
+ */
+#define uip_setnetmask(addr) uip_ipaddr_copy(uip_netmask, (addr))
+
+
+/**
+ * Get the default router's IP address.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the IP address of the default router.
+ *
+ * \hideinitializer
+ */
+#define uip_getdraddr(addr) uip_ipaddr_copy((addr), uip_draddr)
+
+/**
+ * Get the netmask.
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the value of the netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_getnetmask(addr) uip_ipaddr_copy((addr), uip_netmask)
+
+/** @} */
+
+/**
+ * \defgroup uipinit uIP initialization functions
+ * @{
+ *
+ * The uIP initialization functions are used for booting uIP.
+ */
+
+/**
+ * uIP initialization function.
+ *
+ * This function should be called at boot up to initilize the uIP
+ * TCP/IP stack.
+ */
+void uip_init(void);
+
+/**
+ * uIP initialization function.
+ *
+ * This function may be used at boot time to set the initial ip_id.
+ */
+void uip_setipid(u16_t id);
+
+/** @} */
+
+/**
+ * \defgroup uipdevfunc uIP device driver functions
+ * @{
+ *
+ * These functions are used by a network device driver for interacting
+ * with uIP.
+ */
+
+/**
+ * Process an incoming packet.
+ *
+ * This function should be called when the device driver has received
+ * a packet from the network. The packet from the device driver must
+ * be present in the uip_buf buffer, and the length of the packet
+ * should be placed in the uip_len variable.
+ *
+ * When the function returns, there may be an outbound packet placed
+ * in the uip_buf packet buffer. If so, the uip_len variable is set to
+ * the length of the packet. If no packet is to be sent out, the
+ * uip_len variable is set to 0.
+ *
+ * The usual way of calling the function is presented by the source
+ * code below.
+ \code
+ uip_len = devicedriver_poll();
+ if(uip_len > 0) {
+ uip_input();
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note If you are writing a uIP device driver that needs ARP
+ * (Address Resolution Protocol), e.g., when running uIP over
+ * Ethernet, you will need to call the uIP ARP code before calling
+ * this function:
+ \code
+ #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+ uip_len = ethernet_devicedrver_poll();
+ if(uip_len > 0) {
+ if(BUF->type == 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)
+
+/**
+ *
+ *
+ */
+#define uip_conn_active(conn) (uip_conns[conn].tcpstateflags != UIP_CLOSED)
+
+/**
+ * Perform periodic processing for a connection identified by a pointer
+ * to its structure.
+ *
+ * Same as uip_periodic() but takes a pointer to the actual uip_conn
+ * struct instead of an integer as its argument. This function can be
+ * used to force periodic processing of a specific connection.
+ *
+ * \param conn A pointer to the uip_conn struct for the connection to
+ * be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_periodic_conn(conn) do { uip_conn = conn; \
+ uip_process(UIP_TIMER); } while (0)
+
+/**
+ * Reuqest that a particular connection should be polled.
+ *
+ * Similar to uip_periodic_conn() but does not perform any timer
+ * processing. The application is polled for new data.
+ *
+ * \param conn A pointer to the uip_conn struct for the connection to
+ * be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_poll_conn(conn) do { uip_conn = conn; \
+ uip_process(UIP_POLL_REQUEST); } while (0)
+
+
+#if UIP_UDP
+/**
+ * Periodic processing for a UDP connection identified by its number.
+ *
+ * This function is essentially the same as uip_periodic(), but for
+ * UDP connections. It is called in a similar fashion as the
+ * uip_periodic() function:
+ \code
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if(uip_len > 0) {
+ devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \note As for the uip_periodic() function, special care has to be
+ * taken when using uIP together with ARP and Ethernet:
+ \code
+ for(i = 0; i < UIP_UDP_CONNS; i++) {
+ uip_udp_periodic(i);
+ if(uip_len > 0) {
+ uip_arp_out();
+ ethernet_devicedriver_send();
+ }
+ }
+ \endcode
+ *
+ * \param conn The number of the UDP connection to be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \
+ uip_process(UIP_UDP_TIMER); } while (0)
+
+/**
+ * Periodic processing for a UDP connection identified by a pointer to
+ * its structure.
+ *
+ * Same as uip_udp_periodic() but takes a pointer to the actual
+ * uip_conn struct instead of an integer as its argument. This
+ * function can be used to force periodic processing of a specific
+ * connection.
+ *
+ * \param conn A pointer to the uip_udp_conn struct for the connection
+ * to be processed.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \
+ uip_process(UIP_UDP_TIMER); } while (0)
+
+
+#endif /* UIP_UDP */
+
+/**
+ * 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);
+ if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {
+ hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN);
+ } else {
+ hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN);
+ hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN);
+ }
+ }
+ \endcode
+ */
+#ifndef UIP_CONF_EXTERNAL_BUFFER
+ extern u8_t uip_buf[UIP_BUFSIZE+2];
+#else
+ extern unsigned char *uip_buf;
+#endif
+
+/** @} */
+
+/*---------------------------------------------------------------------------*/
+/* 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 conversion using HTONS() or htons() is necessary.
+ *
+ \code
+ uip_ipaddr_t ipaddr;
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ uip_connect(&ipaddr, HTONS(80));
+ \endcode
+ *
+ * \param ripaddr 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(uip_ipaddr_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
+ */
+void uip_send(const void *data, int len);
+
+/**
+ * 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
+ */
+/*void uip_datalen(void);*/
+#define uip_datalen() uip_len
+
+/**
+ * The length of any out-of-band data (urgent data) that has arrived
+ * on the connection.
+ *
+ * \note The configuration parameter UIP_URGDATA must be set for this
+ * function to be enabled.
+ *
+ * \hideinitializer
+ */
+#define uip_urgdatalen() uip_urglen
+
+/**
+ * Close the current connection.
+ *
+ * This function will close the current connection in a nice way.
+ *
+ * \hideinitializer
+ */
+#define uip_close() (uip_flags = UIP_CLOSE)
+
+/**
+ * Abort the current connection.
+ *
+ * This function will abort (reset) the current connection, and is
+ * usually used when an error has 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 the current connection a UDP connection?
+ *
+ * This function checks whether the current connection is a UDP connection.
+ *
+ * \hideinitializer
+ *
+ */
+#define uip_udpconnection() (uip_conn == NULL)
+
+/**
+ * Is new incoming data available?
+ *
+ * Will reduce to non-zero if there is new data for the application
+ * present at the uip_appdata pointer. The size of the data is
+ * 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.
+ *
+ * This function sets up a new UDP connection. The function will
+ * automatically allocate an unused local port for the new
+ * connection. However, another port can be chosen by using the
+ * uip_udp_bind() call, after the uip_udp_new() function has been
+ * called.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t addr;
+ struct uip_udp_conn *c;
+
+ uip_ipaddr(&addr, 192,168,2,1);
+ c = uip_udp_new(&addr, HTONS(12345));
+ if(c != NULL) {
+ uip_udp_bind(c, HTONS(12344));
+ }
+ \endcode
+ * \param ripaddr The IP address of the remote host.
+ *
+ * \param rport The remote port number in network byte order.
+ *
+ * \return The uip_udp_conn structure for the new connection or NULL
+ * if no connection could be allocated.
+ */
+struct uip_udp_conn *uip_udp_new(uip_ipaddr_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
+
+/**
+ * Bind a UDP connection to a local port.
+ *
+ * \param conn A pointer to the uip_udp_conn structure for the
+ * connection.
+ *
+ * \param port The local port number, in network byte order.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_bind(conn, port) (conn)->lport = port
+
+/**
+ * Send a UDP datagram of length len on the current connection.
+ *
+ * This function can only be called in response to a UDP event (poll
+ * or newdata). The data must be present in the uip_buf buffer, at the
+ * place pointed to by the uip_appdata pointer.
+ *
+ * \param len The length of the data in the uip_buf buffer.
+ *
+ * \hideinitializer
+ */
+#define uip_udp_send(len) uip_send((char *)uip_appdata, len)
+
+/** @} */
+
+/* uIP convenience and converting functions. */
+
+/**
+ * \defgroup uipconvfunc uIP conversion functions
+ * @{
+ *
+ * These functions can be used for converting between different data
+ * formats used by uIP.
+ */
+
+/**
+ * Construct an IP address from four bytes.
+ *
+ * This function constructs an IP address of the type that uIP handles
+ * internally from four bytes. The function is handy for specifying IP
+ * addresses to use with e.g. the uip_connect() function.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ struct uip_conn *c;
+
+ uip_ipaddr(&ipaddr, 192,168,1,2);
+ c = uip_connect(&ipaddr, HTONS(80));
+ \endcode
+ *
+ * \param addr A pointer to a uip_ipaddr_t variable that will be
+ * filled in with the IP address.
+ *
+ * \param addr0 The first octet of the IP address.
+ * \param addr1 The second octet of the IP address.
+ * \param addr2 The third octet of the IP address.
+ * \param addr3 The forth octet of the IP address.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \
+ ((u16_t *)(addr))[0] = HTONS(((addr0) << 8) | (addr1)); \
+ ((u16_t *)(addr))[1] = HTONS(((addr2) << 8) | (addr3)); \
+ } while(0)
+
+/**
+ * Construct an IPv6 address from eight 16-bit words.
+ *
+ * This function constructs an IPv6 address.
+ *
+ * \hideinitializer
+ */
+#define uip_ip6addr(addr, addr0,addr1,addr2,addr3,addr4,addr5,addr6,addr7) do { \
+ ((u16_t *)(addr))[0] = HTONS((addr0)); \
+ ((u16_t *)(addr))[1] = HTONS((addr1)); \
+ ((u16_t *)(addr))[2] = HTONS((addr2)); \
+ ((u16_t *)(addr))[3] = HTONS((addr3)); \
+ ((u16_t *)(addr))[4] = HTONS((addr4)); \
+ ((u16_t *)(addr))[5] = HTONS((addr5)); \
+ ((u16_t *)(addr))[6] = HTONS((addr6)); \
+ ((u16_t *)(addr))[7] = HTONS((addr7)); \
+ } while(0)
+
+/**
+ * Copy an IP address to another IP address.
+ *
+ * Copies an IP address from one place to another.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr_copy(&ipaddr2, &ipaddr1);
+ \endcode
+ *
+ * \param dest The destination for the copy.
+ * \param src The source from where to copy.
+ *
+ * \hideinitializer
+ */
+#if !UIP_CONF_IPV6
+#define uip_ipaddr_copy(dest, src) do { \
+ ((u16_t *)dest)[0] = ((u16_t *)src)[0]; \
+ ((u16_t *)dest)[1] = ((u16_t *)src)[1]; \
+ } while(0)
+#else /* !UIP_CONF_IPV6 */
+#define uip_ipaddr_copy(dest, src) memcpy(dest, src, sizeof(uip_ip6addr_t))
+#endif /* !UIP_CONF_IPV6 */
+
+/**
+ * Compare two IP addresses
+ *
+ * Compares two IP addresses.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) {
+ printf("They are the same");
+ }
+ \endcode
+ *
+ * \param addr1 The first IP address.
+ * \param addr2 The second IP address.
+ *
+ * \hideinitializer
+ */
+#if !UIP_CONF_IPV6
+#define uip_ipaddr_cmp(addr1, addr2) (((u16_t *)addr1)[0] == ((u16_t *)addr2)[0] && \
+ ((u16_t *)addr1)[1] == ((u16_t *)addr2)[1])
+#else /* !UIP_CONF_IPV6 */
+#define uip_ipaddr_cmp(addr1, addr2) (memcmp(addr1, addr2, sizeof(uip_ip6addr_t)) == 0)
+#endif /* !UIP_CONF_IPV6 */
+
+/**
+ * Compare two IP addresses with netmasks
+ *
+ * Compares two IP addresses with netmasks. The masks are used to mask
+ * out the bits that are to be compared.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2, mask;
+
+ uip_ipaddr(&mask, 255,255,255,0);
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr(&ipaddr2, 192,16,1,3);
+ if(uip_ipaddr_maskcmp(&ipaddr1, &ipaddr2, &mask)) {
+ printf("They are the same");
+ }
+ \endcode
+ *
+ * \param addr1 The first IP address.
+ * \param addr2 The second IP address.
+ * \param mask The netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr_maskcmp(addr1, addr2, mask) \
+ (((((u16_t *)addr1)[0] & ((u16_t *)mask)[0]) == \
+ (((u16_t *)addr2)[0] & ((u16_t *)mask)[0])) && \
+ ((((u16_t *)addr1)[1] & ((u16_t *)mask)[1]) == \
+ (((u16_t *)addr2)[1] & ((u16_t *)mask)[1])))
+
+
+/**
+ * Mask out the network part of an IP address.
+ *
+ * Masks out the network part of an IP address, given the address and
+ * the netmask.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr1, ipaddr2, netmask;
+
+ uip_ipaddr(&ipaddr1, 192,16,1,2);
+ uip_ipaddr(&netmask, 255,255,255,0);
+ uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask);
+ \endcode
+ *
+ * In the example above, the variable "ipaddr2" will contain the IP
+ * address 192.168.1.0.
+ *
+ * \param dest Where the result is to be placed.
+ * \param src The IP address.
+ * \param mask The netmask.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr_mask(dest, src, mask) do { \
+ ((u16_t *)dest)[0] = ((u16_t *)src)[0] & ((u16_t *)mask)[0]; \
+ ((u16_t *)dest)[1] = ((u16_t *)src)[1] & ((u16_t *)mask)[1]; \
+ } while(0)
+
+/**
+ * Pick the first octet of an IP address.
+ *
+ * Picks out the first octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr1(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 1.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr1(addr) (htons(((u16_t *)(addr))[0]) >> 8)
+
+/**
+ * Pick the second octet of an IP address.
+ *
+ * Picks out the second octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr2(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 2.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr2(addr) (htons(((u16_t *)(addr))[0]) & 0xff)
+
+/**
+ * Pick the third octet of an IP address.
+ *
+ * Picks out the third octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr3(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 3.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr3(addr) (htons(((u16_t *)(addr))[1]) >> 8)
+
+/**
+ * Pick the fourth octet of an IP address.
+ *
+ * Picks out the fourth octet of an IP address.
+ *
+ * Example:
+ \code
+ uip_ipaddr_t ipaddr;
+ u8_t octet;
+
+ uip_ipaddr(&ipaddr, 1,2,3,4);
+ octet = uip_ipaddr4(&ipaddr);
+ \endcode
+ *
+ * In the example above, the variable "octet" will contain the value 4.
+ *
+ * \hideinitializer
+ */
+#define uip_ipaddr4(addr) (htons(((u16_t *)(addr))[1]) & 0xff)
+
+/**
+ * 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 UIP_BYTE_ORDER == UIP_BIG_ENDIAN
+# define HTONS(n) (n)
+# else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
+# define HTONS(n) (u16_t)((((u16_t) (n)) << 8) | (((u16_t) (n)) >> 8))
+# endif /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */
+#else
+#error "HTONS already defined!"
+#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 */
+#ifndef ntohs
+#define ntohs htons
+#endif
+
+/** @} */
+
+/**
+ * Pointer to the application data in the packet buffer.
+ *
+ * This pointer points to the application data when the application is
+ * called. If the application wishes to send data, the application may
+ * use this space to write the data into before calling uip_send().
+ */
+extern void *uip_appdata;
+
+#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 void *uip_urgdata;
+#endif /* UIP_URGDATA > 0 */
+
+
+/**
+ * \defgroup uipdrivervars Variables used in uIP device drivers
+ * @{
+ *
+ * uIP has a few global variables that are used in device drivers for
+ * uIP.
+ */
+
+/**
+ * The length of the packet in the uip_buf buffer.
+ *
+ * The global variable uip_len holds the length of the packet in the
+ * uip_buf buffer.
+ *
+ * When the network device driver calls the uIP input function,
+ * uip_len should be set to the length of the packet in the uip_buf
+ * buffer.
+ *
+ * When sending packets, the device driver should use the contents of
+ * the uip_len variable to determine the length of the outgoing
+ * packet.
+ *
+ */
+extern u16_t uip_len;
+
+/** @} */
+
+#if UIP_URGDATA > 0
+extern u16_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 type of this field is
+ * configured in the "uipopt.h" header file.
+ */
+struct uip_conn {
+ uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */
+
+ 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. */
+ uip_tcp_appstate_t appstate;
+};
+
+
+/**
+ * Pointer to the current TCP connection.
+ *
+ * The uip_conn pointer can be used to access the current TCP
+ * 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 u8_t uip_acc32[4];
+
+/** @} */
+
+
+#if UIP_UDP
+/**
+ * Representation of a uIP UDP connection.
+ */
+struct uip_udp_conn {
+ uip_ipaddr_t ripaddr; /**< 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. */
+ u8_t ttl; /**< Default time-to-live. */
+
+ /** The application state. */
+ uip_udp_appstate_t appstate;
+};
+
+/**
+ * The current UDP connection.
+ */
+extern struct uip_udp_conn *uip_udp_conn;
+extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
+#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. */
+#if UIP_UDP
+ struct {
+ uip_stats_t drop; /**< Number of dropped UDP segments. */
+ uip_stats_t recv; /**< Number of recived UDP segments. */
+ uip_stats_t sent; /**< Number of sent UDP segments. */
+ uip_stats_t chkerr; /**< Number of UDP segments with a bad
+ checksum. */
+ } udp; /**< UDP statistics. */
+#endif /* UIP_UDP */
+};
+
+/**
+ * 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 u8_t uip_flags;
+
+/* The following flags may be set in the global variable uip_flags
+ before calling the application callback. The UIP_ACKDATA,
+ UIP_NEWDATA, and UIP_CLOSE flags may both be set at the same time,
+ whereas the others are mutualy exclusive. Note that these flags
+ should *NOT* be accessed directly, but only through the uIP
+ functions/macros. */
+
+#define UIP_ACKDATA 1 /* Signifies that the outstanding data was
+ acked and the application should send
+ out new data instead of retransmitting
+ the last data. */
+#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent
+ us new data. */
+#define UIP_REXMIT 4 /* Tells the application to retransmit the
+ data that was last sent. */
+#define UIP_POLL 8 /* Used for polling the application, to
+ check if the application has data that
+ it wants to send. */
+#define UIP_CLOSE 16 /* The remote host has closed the
+ connection, thus the connection has
+ gone away. Or the application signals
+ that it wants to close the
+ connection. */
+#define UIP_ABORT 32 /* The remote host has aborted the
+ connection, thus the connection has
+ gone away. Or the application signals
+ that it wants to abort the
+ connection. */
+#define UIP_CONNECTED 64 /* We have got a connection from a remote
+ host and have set up a new connection
+ for it, or an active connection has
+ been successfully established. */
+
+#define UIP_TIMEDOUT 128 /* The connection has been aborted due to
+ too many retransmissions. */
+
+/* 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. These values are never used directly, but only in
+ the macrose defined in this file. */
+
+#define UIP_DATA 1 /* Tells uIP that there is incoming
+ data in the uip_buf buffer. The
+ length of the data is stored in the
+ global variable uip_len. */
+#define UIP_TIMER 2 /* Tells uIP that the periodic timer
+ has fired. */
+#define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should
+ be polled. */
+#define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram
+ should be constructed in the
+ uip_buf buffer. */
+#if UIP_UDP
+#define UIP_UDP_TIMER 5
+#endif /* UIP_UDP */
+
+/* The TCP states used in the uip_conn->tcpstateflags. */
+#define UIP_CLOSED 0
+#define UIP_SYN_RCVD 1
+#define UIP_SYN_SENT 2
+#define UIP_ESTABLISHED 3
+#define UIP_FIN_WAIT_1 4
+#define UIP_FIN_WAIT_2 5
+#define UIP_CLOSING 6
+#define UIP_TIME_WAIT 7
+#define UIP_LAST_ACK 8
+#define UIP_TS_MASK 15
+
+#define UIP_STOPPED 16
+
+/* The TCP and IP headers. */
+
+#ifdef __ICCARM__
+ #pragma pack(1)
+#endif
+
+struct uip_tcpip_hdr {
+#if UIP_CONF_IPV6
+ /* IPv6 header. */
+ u8_t vtc,
+ tcflow;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IPv4 header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+#endif /* UIP_CONF_IPV6 */
+
+ /* 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];
+} PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+
+/* The ICMP and IP headers. */
+#ifdef __ICCARM__
+ #pragma pack(1)
+#endif
+
+struct uip_icmpip_hdr {
+#if UIP_CONF_IPV6
+ /* IPv6 header. */
+ u8_t vtc,
+ tcf;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IPv4 header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+#endif /* UIP_CONF_IPV6 */
+
+ /* ICMP (echo) header. */
+ u8_t type, icode;
+ u16_t icmpchksum;
+#if !UIP_CONF_IPV6
+ u16_t id, seqno;
+#else /* !UIP_CONF_IPV6 */
+ u8_t flags, reserved1, reserved2, reserved3;
+ u8_t icmp6data[16];
+ u8_t options[1];
+#endif /* !UIP_CONF_IPV6 */
+} PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+
+
+/* The UDP and IP headers. */
+#ifdef __ICCARM__
+ #pragma pack(1)
+#endif
+
+struct uip_udpip_hdr {
+#if UIP_CONF_IPV6
+ /* IPv6 header. */
+ u8_t vtc,
+ tcf;
+ u16_t flow;
+ u8_t len[2];
+ u8_t proto, ttl;
+ uip_ip6addr_t srcipaddr, destipaddr;
+#else /* UIP_CONF_IPV6 */
+ /* IP header. */
+ u8_t vhl,
+ tos,
+ len[2],
+ ipid[2],
+ ipoffset[2],
+ ttl,
+ proto;
+ u16_t ipchksum;
+ u16_t srcipaddr[2],
+ destipaddr[2];
+#endif /* UIP_CONF_IPV6 */
+
+ /* UDP header. */
+ u16_t srcport,
+ destport;
+ u16_t udplen;
+ u16_t udpchksum;
+} PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+
+
+
+/**
+ * The buffer size available for user data in the \ref uip_buf buffer.
+ *
+ * This macro holds the available size for user data in the \ref
+ * uip_buf buffer. The macro is intended to be used for checking
+ * bounds of available user data.
+ *
+ * Example:
+ \code
+ snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i);
+ \endcode
+ *
+ * \hideinitializer
+ */
+#define UIP_APPDATA_SIZE (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
+
+
+#define UIP_PROTO_ICMP 1
+#define UIP_PROTO_TCP 6
+#define UIP_PROTO_UDP 17
+#define UIP_PROTO_ICMP6 58
+
+/* Header sizes. */
+#if UIP_CONF_IPV6
+#define UIP_IPH_LEN 40
+#else /* UIP_CONF_IPV6 */
+#define UIP_IPH_LEN 20 /* Size of IP header */
+#endif /* UIP_CONF_IPV6 */
+#define UIP_UDPH_LEN 8 /* Size of UDP header */
+#define UIP_TCPH_LEN 20 /* Size of TCP header */
+#define UIP_IPUDPH_LEN (UIP_UDPH_LEN + UIP_IPH_LEN) /* Size of IP +
+ UDP
+ header */
+#define UIP_IPTCPH_LEN (UIP_TCPH_LEN + UIP_IPH_LEN) /* Size of IP +
+ TCP
+ header */
+#define UIP_TCPIP_HLEN UIP_IPTCPH_LEN
+
+
+#if UIP_FIXEDADDR
+extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
+#else /* UIP_FIXEDADDR */
+extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr;
+#endif /* UIP_FIXEDADDR */
+
+
+
+/**
+ * Representation of a 48-bit Ethernet address.
+ */
+#ifdef __ICCARM__
+ #pragma pack(1)
+#endif
+
+struct uip_eth_addr {
+ u8_t addr[6];
+} PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+
+/**
+ * Calculate the Internet checksum over a buffer.
+ *
+ * The Internet checksum is the one's complement of the one's
+ * complement sum of all 16-bit words in the buffer.
+ *
+ * See RFC1071.
+ *
+ * \param 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.
+ *
+ * \return The TCP checksum of the TCP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+u16_t uip_tcpchksum(void);
+
+/**
+ * Calculate the UDP checksum of the packet in uip_buf and uip_appdata.
+ *
+ * The UDP checksum is the Internet checksum of data contents of the
+ * UDP segment, and a pseudo-header as defined in RFC768.
+ *
+ * \return The UDP checksum of the UDP segment in uip_buf and pointed
+ * to by uip_appdata.
+ */
+u16_t uip_udpchksum(void);
+
+/**
+ * Work out the fasted way of sending the data to the low level driver.
+ */
+int uip_fast_send( int xARP );
+
+#endif /* __UIP_H__ */
+
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arch.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arch.h new file mode 100644 index 0000000..5ea4578 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arch.h @@ -0,0 +1,138 @@ +/**
+ * \addtogroup uip
+ * {@
+ */
+
+/**
+ * \defgroup uiparch Architecture specific uIP functions
+ * @{
+ *
+ * The functions in the architecture specific module implement the IP
+ * check sum and 32-bit additions.
+ *
+ * The IP checksum calculation is the most computationally expensive
+ * operation in the TCP/IP stack and it therefore pays off to
+ * implement this in efficient assembler. The purpose of the uip-arch
+ * module is to let the checksum functions to be implemented in
+ * architecture specific assembler.
+ *
+ */
+
+/**
+ * \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 1.2 2006/06/07 09:15:19 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);
+
+u16_t uip_udpchksum(void);
+
+/** @} */
+/** @} */
+
+#endif /* __UIP_ARCH_H__ */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arp.c b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arp.c new file mode 100644 index 0000000..d105226 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arp.c @@ -0,0 +1,466 @@ +/**
+ * \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 1.8 2006/06/02 23:36:21 adam Exp $
+ *
+ */
+#include "uip_arp.h"
+
+#include <string.h>
+
+#ifdef __ICCARM__
+ #pragma pack( 1 )
+#endif
+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];
+} PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+#ifdef __ICCARM__
+ #pragma pack( 1 )
+#endif
+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];
+} PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+#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;
+};
+
+static const struct uip_eth_addr broadcast_ethaddr = { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
+static const u16_t broadcast_ipaddr[2] = { 0xffff, 0xffff };
+
+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;
+ tabptr = &arp_table[i];
+ }
+
+ /* 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.
+ */
+
+/*-----------------------------------------------------------------------------------*/
+#if 1
+void uip_arp_ipin( void )
+{
+ uip_len -= sizeof( struct uip_eth_hdr );
+
+ /* Only insert/update an entry if the source IP address of the
+ incoming IP packet comes from a host on the local network. */
+ if( (IPBUF->srcipaddr[0] & uip_netmask[0]) != (uip_hostaddr[0] & uip_netmask[0]) )
+ {
+ return;
+ }
+
+ if( (IPBUF->srcipaddr[1] & uip_netmask[1]) != (uip_hostaddr[1] & uip_netmask[1]) )
+ {
+ return;
+ }
+
+ uip_arp_update( IPBUF->srcipaddr, &(IPBUF->ethhdr.src) );
+
+ return;
+}
+
+#endif /* 0 */
+
+/*-----------------------------------------------------------------------------------*/
+
+/**
+ * ARP processing for incoming ARP packets.
+ *
+ * This function should be called by the device driver when an ARP
+ * packet has been received. The function will act differently
+ * depending on the ARP packet type: if it is a reply for a request
+ * that we previously sent out, the ARP cache will be filled in with
+ * the values from the ARP reply. If the incoming ARP packet is an ARP
+ * request for our IP address, an ARP reply packet is created and put
+ * into the uip_buf[] buffer.
+ *
+ * When the function returns, the value of the global variable uip_len
+ * indicates whether the device driver should send out a packet or
+ * not. If uip_len is zero, no packet should be sent. If uip_len is
+ * non-zero, it contains the length of the outbound packet that is
+ * present in the uip_buf[] buffer.
+ *
+ * This function expects an ARP packet with a prepended Ethernet
+ * header in the uip_buf[] buffer, and the length of the packet in the
+ * global variable uip_len.
+ */
+
+/*-----------------------------------------------------------------------------------*/
+void uip_arp_arpin( void )
+{
+ if( uip_len < sizeof(struct arp_hdr) )
+ {
+ uip_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( uip_ipaddr_cmp(BUF->dipaddr, uip_hostaddr) )
+ {
+ /* First, we register the one who made the request in our ARP
+ table, since it is likely that we will do more communication
+ with this host in the future. */
+ uip_arp_update( BUF->sipaddr, &BUF->shwaddr );
+
+ /* 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( uip_ipaddr_cmp(BUF->dipaddr, uip_hostaddr) )
+ {
+ uip_arp_update( BUF->sipaddr, &BUF->shwaddr );
+ }
+
+ break;
+ }
+
+ return;
+}
+
+/*-----------------------------------------------------------------------------------*/
+
+/**
+ * Prepend Ethernet header to an outbound IP packet and see if we need
+ * to send out an ARP request.
+ *
+ * This function should be called before sending out an IP packet. The
+ * function checks the destination IP address of the IP packet to see
+ * what Ethernet MAC address that should be used as a destination MAC
+ * address on the Ethernet.
+ *
+ * If the destination IP address is in the local network (determined
+ * by logical ANDing of netmask and our IP address), the function
+ * checks the ARP cache to see if an entry for the destination IP
+ * address is found. If so, an Ethernet header is prepended and the
+ * function returns. If no ARP cache entry is found for the
+ * destination IP address, the packet in the uip_buf[] is replaced by
+ * an ARP request packet for the IP address. The IP packet is dropped
+ * and it is assumed that they higher level protocols (e.g., TCP)
+ * eventually will retransmit the dropped packet.
+ *
+ * If the destination IP address is not on the local network, the IP
+ * address of the default router is used instead.
+ *
+ * When the function returns, a packet is present in the uip_buf[]
+ * buffer, and the length of the packet is in the global variable
+ * uip_len.
+ */
+
+/*-----------------------------------------------------------------------------------*/
+void uip_arp_out( void )
+{
+ struct arp_entry *tabptr;
+
+ /* Find the destination IP address in the ARP table and construct
+ the Ethernet header. If the destination IP addres isn't on the
+ local network, we use the default router's IP address instead.
+
+ If not ARP table entry is found, we overwrite the original IP
+ packet with an ARP request for the IP address. */
+
+ /* First check if destination is a local broadcast. */
+ if( uip_ipaddr_cmp(IPBUF->destipaddr, broadcast_ipaddr) )
+ {
+ memcpy( IPBUF->ethhdr.dest.addr, broadcast_ethaddr.addr, 6 );
+ }
+ else
+ {
+ /* Check if the destination address is on the local network. */
+ if( !uip_ipaddr_maskcmp(IPBUF->destipaddr, uip_hostaddr, uip_netmask) )
+ {
+ /* Destination address was not on the local network, so we need to
+ use the default router's IP address instead of the destination
+ address when determining the MAC address. */
+ uip_ipaddr_copy( ipaddr, uip_draddr );
+ }
+ else
+ {
+ /* Else, we use the destination IP address. */
+ uip_ipaddr_copy( ipaddr, IPBUF->destipaddr );
+ }
+
+ for( i = 0; i < UIP_ARPTAB_SIZE; ++i )
+ {
+ tabptr = &arp_table[i];
+ if( uip_ipaddr_cmp(ipaddr, tabptr->ipaddr) )
+ {
+ 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 );
+
+ uip_ipaddr_copy( BUF->dipaddr, ipaddr );
+ uip_ipaddr_copy( BUF->sipaddr, uip_hostaddr );
+ 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[UIP_TCPIP_HLEN + UIP_LLH_LEN];
+
+ uip_len = sizeof( struct arp_hdr );
+ return;
+ }
+
+ /* Build an ethernet header. */
+ memcpy( IPBUF->ethhdr.dest.addr, tabptr->ethaddr.addr, 6 );
+ }
+
+ memcpy( IPBUF->ethhdr.src.addr, uip_ethaddr.addr, 6 );
+
+ IPBUF->ethhdr.type = HTONS( UIP_ETHTYPE_IP );
+
+ uip_len += sizeof( struct uip_eth_hdr );
+}
+
+/*-----------------------------------------------------------------------------------*/
+
+/** @} */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arp.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arp.h new file mode 100644 index 0000000..b6b2b66 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_arp.h @@ -0,0 +1,152 @@ +/**
+ * \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 1.5 2006/06/11 21:46:39 adam Exp $
+ *
+ */
+
+#ifndef __UIP_ARP_H__
+#define __UIP_ARP_H__
+
+#include "uip.h"
+
+
+extern struct uip_eth_addr uip_ethaddr;
+
+/**
+ * The Ethernet header.
+ */
+#ifdef __ICCARM__
+ #pragma pack(1)
+#endif
+
+struct uip_eth_hdr {
+ struct uip_eth_addr dest;
+ struct uip_eth_addr src;
+ u16_t type;
+}PACK_STRUCT_END;
+
+#ifdef __ICCARM__
+ #pragma pack()
+#endif
+
+#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);
+//#define uip_arp_ipin()
+
+/* The uip_arp_arpin() should be called when an ARP packet is received
+ by the Ethernet driver. This function also assumes that the
+ Ethernet frame is present in the uip_buf buffer. When the
+ uip_arp_arpin() function returns, the contents of the uip_buf
+ buffer should be sent out on the Ethernet if the uip_len variable
+ is > 0. */
+void uip_arp_arpin(void);
+
+/* The uip_arp_out() function should be called when an IP packet
+ should be sent out on the Ethernet. This function creates an
+ Ethernet header before the IP header in the uip_buf buffer. The
+ Ethernet header will have the correct Ethernet MAC destination
+ address filled in if an ARP table entry for the destination IP
+ address (or the IP address of the default router) is present. If no
+ such table entry is found, the IP packet is overwritten with an ARP
+ request and we rely on TCP to retransmit the packet that was
+ overwritten. In any case, the uip_len variable holds the length of
+ the Ethernet frame that should be transmitted. */
+void uip_arp_out(void);
+
+/* The uip_arp_timer() function should be called every ten seconds. It
+ is responsible for flushing old entries in the ARP table. */
+void uip_arp_timer(void);
+
+/** @} */
+
+/**
+ * \addtogroup uipconffunc
+ * @{
+ */
+
+
+/**
+ * Specifiy the Ethernet MAC address.
+ *
+ * The ARP code needs to know the MAC address of the Ethernet card in
+ * order to be able to respond to ARP queries and to generate working
+ * Ethernet headers.
+ *
+ * \note This macro only specifies the Ethernet MAC address to the ARP
+ * code. It cannot be used to change the MAC address of the Ethernet
+ * card.
+ *
+ * \param eaddr A pointer to a struct uip_eth_addr containing the
+ * Ethernet MAC address of the Ethernet card.
+ *
+ * \hideinitializer
+ */
+#define uip_setethaddr(eaddr) do {uip_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)
+
+/** @} */
+/** @} */
+
+#endif /* __UIP_ARP_H__ */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_timer.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_timer.h new file mode 100644 index 0000000..e28e3ca --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uip_timer.h @@ -0,0 +1,86 @@ +/**
+ * \defgroup timer Timer library
+ *
+ * The timer library provides functions for setting, resetting and
+ * restarting timers, and for checking if a timer has expired. An
+ * application must "manually" check if its timers have expired; this
+ * is not done automatically.
+ *
+ * A timer is declared as a \c struct \c timer and all access to the
+ * timer is made by a pointer to the declared timer.
+ *
+ * \note The timer library uses the \ref clock "Clock library" to
+ * measure time. Intervals should be specified in the format used by
+ * the clock library.
+ *
+ * @{
+ */
+
+
+/**
+ * \file
+ * Timer library header file.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ */
+
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: timer.h,v 1.3 2006/06/11 21:46:39 adam Exp $
+ */
+#ifndef __TIMER_H__
+#define __TIMER_H__
+
+#include "clock.h"
+
+/**
+ * A timer.
+ *
+ * This structure is used for declaring a timer. The timer must be set
+ * with timer_set() before it can be used.
+ *
+ * \hideinitializer
+ */
+struct timer {
+ clock_time_t start;
+ clock_time_t interval;
+};
+
+void timer_set(struct timer *t, clock_time_t interval);
+void timer_reset(struct timer *t);
+void timer_restart(struct timer *t);
+int timer_expired(struct timer *t);
+
+#endif /* __TIMER_H__ */
+
+/** @} */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.c b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.c new file mode 100644 index 0000000..afedc0d --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.c @@ -0,0 +1,81 @@ +/*
+ * Copyright (c) 2004, Adam Dunkels and the Swedish Institute of
+ * Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * $Id: uiplib.c,v 1.2 2006/06/12 08:00:31 adam Exp $
+ *
+ */
+#include "uip.h"
+#include "uiplib.h"
+
+/*-----------------------------------------------------------------------------------*/
+unsigned char uiplib_ipaddrconv( char *addrstr, unsigned char *ipaddr )
+{
+ unsigned char tmp;
+ char c;
+ unsigned char i, j;
+
+ tmp = 0;
+
+ for( i = 0; i < 4; ++i )
+ {
+ j = 0;
+ do
+ {
+ c = *addrstr;
+ ++j;
+ if( j > 4 )
+ {
+ return 0;
+ }
+
+ if( c == '.' || c == 0 )
+ {
+ *ipaddr = tmp;
+ ++ipaddr;
+ tmp = 0;
+ }
+ else if( c >= '0' && c <= '9' )
+ {
+ tmp = ( tmp * 10 ) + ( c - '0' );
+ }
+ else
+ {
+ return 0;
+ }
+
+ ++addrstr;
+ } while( c != '.' && c != 0 );
+ }
+
+ return 1;
+}
+
+/*-----------------------------------------------------------------------------------*/
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.h new file mode 100644 index 0000000..6eb0c66 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.h @@ -0,0 +1,71 @@ +/**
+ * \file
+ * Various uIP library functions.
+ * \author
+ * Adam Dunkels <adam@sics.se>
+ *
+ */
+
+/*
+ * Copyright (c) 2002, Adam Dunkels.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack
+ *
+ * $Id: uiplib.h,v 1.1 2006/06/07 09:15:19 adam Exp $
+ *
+ */
+#ifndef __UIPLIB_H__
+#define __UIPLIB_H__
+
+/**
+ * \addtogroup uipconvfunc
+ * @{
+ */
+
+/**
+ * Convert a textual representation of an IP address to a numerical representation.
+ *
+ * This function takes a textual representation of an IP address in
+ * the form a.b.c.d and converts it into a 4-byte array that can be
+ * used by other uIP functions.
+ *
+ * \param addrstr A pointer to a string containing the IP address in
+ * textual form.
+ *
+ * \param addr A pointer to a 4-byte array that will be filled in with
+ * the numerical representation of the address.
+ *
+ * \retval 0 If the IP address could not be parsed.
+ * \retval Non-zero If the IP address was parsed.
+ */
+unsigned char uiplib_ipaddrconv(char *addrstr, unsigned char *addr);
+
+/** @} */
+
+#endif /* __UIPLIB_H__ */
diff --git a/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uipopt.h b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uipopt.h new file mode 100644 index 0000000..cc01001 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uipopt.h @@ -0,0 +1,535 @@ +/**
+ * \defgroup uipopt Configuration options for uIP
+ * @{
+ *
+ * uIP is configured using the per-project configuration file
+ * uipopt.h. This file contains all compile-time options for uIP and
+ * should be tweaked to match each specific project. The uIP
+ * distribution contains a documented example "uipopt.h" that can be
+ * copied and modified for each project.
+ *
+ * \note Most of the configuration options in the uipopt.h should not
+ * be changed, but rather the per-project uip-conf.h file.
+ */
+
+/**
+ * \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 1.4 2006/06/12 08:00:31 adam Exp $
+ *
+ */
+
+#ifndef __UIPOPT_H__
+#define __UIPOPT_H__
+
+#ifndef UIP_LITTLE_ENDIAN
+#define UIP_LITTLE_ENDIAN 3412
+#endif /* UIP_LITTLE_ENDIAN */
+#ifndef UIP_BIG_ENDIAN
+#define UIP_BIG_ENDIAN 1234
+#endif /* UIP_BIG_ENDIAN */
+
+#include "uip-conf.h"
+
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \name 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
+ */
+#ifdef UIP_CONF_PINGADDRCONF
+#define UIP_PINGADDRCONF UIP_CONF_PINGADDRCONF
+#else /* UIP_CONF_PINGADDRCONF */
+#define UIP_PINGADDRCONF 0
+#endif /* UIP_CONF_PINGADDRCONF */
+
+
+/**
+ * Specifies if the uIP ARP module should be compiled with a fixed
+ * Ethernet MAC address or not.
+ *
+ * If this configuration option is 0, the macro uip_setethaddr() can
+ * be used to specify the Ethernet address at run-time.
+ *
+ * \hideinitializer
+ */
+#define UIP_FIXEDETHADDR 0
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \name IP configuration options
+ * @{
+ *
+ */
+/**
+ * The IP TTL (time to live) of IP packets sent by uIP.
+ *
+ * This should normally not be changed.
+ */
+#define UIP_TTL 64
+
+/**
+ * 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
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+/**
+ * \name UDP configuration options
+ * @{
+ */
+
+/**
+ * Toggles wether UDP support should be compiled in or not.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_UDP
+#define UIP_UDP UIP_CONF_UDP
+#else /* UIP_CONF_UDP */
+#define UIP_UDP 0
+#endif /* UIP_CONF_UDP */
+
+/**
+ * Toggles if UDP checksums should be used or not.
+ *
+ * \note Support for UDP checksums is currently not included in uIP,
+ * so this option has no function.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_UDP_CHECKSUMS
+#define UIP_UDP_CHECKSUMS UIP_CONF_UDP_CHECKSUMS
+#else
+#define UIP_UDP_CHECKSUMS 0
+#endif
+
+/**
+ * The maximum amount of concurrent UDP connections.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_UDP_CONNS
+#define UIP_UDP_CONNS UIP_CONF_UDP_CONNS
+#else /* UIP_CONF_UDP_CONNS */
+#define UIP_UDP_CONNS 10
+#endif /* UIP_CONF_UDP_CONNS */
+
+/**
+ * The name of the function that should be called when UDP datagrams arrive.
+ *
+ * \hideinitializer
+ */
+
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \name 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
+ */
+#ifndef UIP_CONF_MAX_CONNECTIONS
+#define UIP_CONNS 10
+#else /* UIP_CONF_MAX_CONNECTIONS */
+#define UIP_CONNS UIP_CONF_MAX_CONNECTIONS
+#endif /* UIP_CONF_MAX_CONNECTIONS */
+
+
+/**
+ * The maximum number of simultaneously listening TCP ports.
+ *
+ * Each listening TCP port requires 2 bytes of memory.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_MAX_LISTENPORTS
+#define UIP_LISTENPORTS 20
+#else /* UIP_CONF_MAX_LISTENPORTS */
+#define UIP_LISTENPORTS UIP_CONF_MAX_LISTENPORTS
+#endif /* UIP_CONF_MAX_LISTENPORTS */
+
+/**
+ * Determines if support for TCP urgent data notification should be
+ * compiled in.
+ *
+ * Urgent data (out-of-band data) is a rarely used TCP feature that
+ * very seldom would be required.
+ *
+ * \hideinitializer
+ */
+#define UIP_URGDATA 0
+
+/**
+ * The initial retransmission timeout counted in timer pulses.
+ *
+ * This should not be changed.
+ */
+#define UIP_RTO 3
+
+/**
+ * The maximum number of times a segment should be retransmitted
+ * before the connection should be aborted.
+ *
+ * This should not be changed.
+ */
+#define UIP_MAXRTX 8
+
+/**
+ * The maximum number of times a SYN segment should be retransmitted
+ * before a connection request should be deemed to have been
+ * unsuccessful.
+ *
+ * This should not need to be changed.
+ */
+#define UIP_MAXSYNRTX 5
+
+/**
+ * The TCP maximum segment size.
+ *
+ * This is should not be to set to more than
+ * UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN.
+ */
+#define UIP_TCP_MSS (UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN)
+
+/**
+ * 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
+ */
+#ifndef UIP_CONF_RECEIVE_WINDOW
+#define UIP_RECEIVE_WINDOW UIP_TCP_MSS
+#else
+#define UIP_RECEIVE_WINDOW UIP_CONF_RECEIVE_WINDOW
+#endif
+
+/**
+ * How long a connection should stay in the TIME_WAIT state.
+ *
+ * This configiration option has no real implication, and it should be
+ * left untouched.
+ */
+#define UIP_TIME_WAIT_TIMEOUT 120
+
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \name ARP configuration options
+ * @{
+ */
+
+/**
+ * The size of the ARP table.
+ *
+ * This option should be set to a larger value if this uIP node will
+ * have many connections from the local network.
+ *
+ * \hideinitializer
+ */
+#ifdef UIP_CONF_ARPTAB_SIZE
+#define UIP_ARPTAB_SIZE UIP_CONF_ARPTAB_SIZE
+#else
+#define UIP_ARPTAB_SIZE 8
+#endif
+
+/**
+ * The 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
+
+/** @} */
+
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \name 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
+ */
+#ifndef UIP_CONF_BUFFER_SIZE
+#define UIP_BUFSIZE 1500
+#else /* UIP_CONF_BUFFER_SIZE */
+#define UIP_BUFSIZE UIP_CONF_BUFFER_SIZE
+#endif /* UIP_CONF_BUFFER_SIZE */
+
+
+/**
+ * Determines if statistics support should be compiled in.
+ *
+ * The statistics is useful for debugging and to show the user.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_STATISTICS
+#define UIP_STATISTICS 0
+#else /* UIP_CONF_STATISTICS */
+#define UIP_STATISTICS UIP_CONF_STATISTICS
+#endif /* UIP_CONF_STATISTICS */
+
+/**
+ * Determines if logging of certain events should be compiled in.
+ *
+ * This is useful mostly for debugging. The function uip_log()
+ * must be implemented to suit the architecture of the project, if
+ * logging is turned on.
+ *
+ * \hideinitializer
+ */
+#ifndef UIP_CONF_LOGGING
+#define UIP_LOGGING 0
+#else /* UIP_CONF_LOGGING */
+#define UIP_LOGGING UIP_CONF_LOGGING
+#endif /* UIP_CONF_LOGGING */
+
+/**
+ * Broadcast support.
+ *
+ * This flag configures IP broadcast support. This is useful only
+ * together with UDP.
+ *
+ * \hideinitializer
+ *
+ */
+#ifndef UIP_CONF_BROADCAST
+#define UIP_BROADCAST 0
+#else /* UIP_CONF_BROADCAST */
+#define UIP_BROADCAST UIP_CONF_BROADCAST
+#endif /* UIP_CONF_BROADCAST */
+
+/**
+ * Print out a uIP log message.
+ *
+ * This function must be implemented by the module that uses uIP, and
+ * is called by uIP whenever a log message is generated.
+ */
+void uip_log(char *msg);
+
+/**
+ * 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
+ */
+#ifdef UIP_CONF_LLH_LEN
+#define UIP_LLH_LEN UIP_CONF_LLH_LEN
+#else /* UIP_CONF_LLH_LEN */
+#define UIP_LLH_LEN 14
+#endif /* UIP_CONF_LLH_LEN */
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+/**
+ * \name CPU architecture configuration
+ * @{
+ *
+ * The CPU architecture configuration is where the endianess of the
+ * CPU on which uIP is to be run is specified. Most CPUs today are
+ * little endian, and the most notable exception are the Motorolas
+ * which are big endian. The BYTE_ORDER macro should be changed to
+ * reflect the CPU architecture on which uIP is to be run.
+ */
+
+/**
+ * The byte order of the CPU architecture on which uIP is to be run.
+ *
+ * This option can be either BIG_ENDIAN (Motorola byte order) or
+ * LITTLE_ENDIAN (Intel byte order).
+ *
+ * \hideinitializer
+ */
+#define UIP_BYTE_ORDER UIP_CONF_BYTE_ORDER
+
+/** @} */
+/*------------------------------------------------------------------------------*/
+
+/**
+ * \name 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 type of the application
+ * structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t.
+ *
+ * The file containing the definitions must be included in the
+ * uipopt.h file.
+ *
+ * The following example illustrates how this can look.
+ \code
+
+void httpd_appcall(void);
+#define UIP_APPCALL httpd_appcall
+
+struct httpd_state {
+ u8_t state;
+ u16_t count;
+ char *dataptr;
+ char *script;
+};
+typedef struct httpd_state uip_tcp_appstate_t
+ \endcode
+ */
+
+/**
+ * \var #define UIP_APPCALL
+ *
+ * The name of the application function that uIP should call in
+ * response to TCP/IP events.
+ *
+ */
+
+/**
+ * \var typedef uip_tcp_appstate_t
+ *
+ * The type of the application state that is to be stored in the
+ * uip_conn structure. This usually is typedef:ed to a struct holding
+ * application state information.
+ */
+
+/**
+ * \var typedef uip_udp_appstate_t
+ *
+ * The type of the application state that is to be stored in the
+ * uip_conn structure. This usually is typedef:ed to a struct holding
+ * application state information.
+ */
+/** @} */
+/** @} */
+
+#endif /* __UIPOPT_H__ */
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