From: richardbarry Date: Sat, 13 Feb 2010 21:15:28 +0000 (+0000) Subject: Not much more than a reformatted uIP so far - this will eventually replace the FreeRT... X-Git-Tag: V6.0.3~9 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=4dc5279ccf018599cfc23e469243489ca2e6ae90;p=freertos Not much more than a reformatted uIP so far - this will eventually replace the FreeRTOS-uIP files. git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@977 1d2547de-c912-0410-9cb9-b8ca96c0e9e2 --- diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/http-strings.c b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/http-strings.c new file mode 100644 index 000000000..a3771dd20 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/http-strings.c @@ -0,0 +1,486 @@ +const char http_http[8] = /* "http://" */ { 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, }; +const char http_200[5] = /* "200 " */ { 0x32, 0x30, 0x30, 0x20, }; +const char http_301[5] = /* "301 " */ { 0x33, 0x30, 0x31, 0x20, }; +const char http_302[5] = /* "302 " */ { 0x33, 0x30, 0x32, 0x20, }; +const char http_get[5] = /* "GET " */ { 0x47, 0x45, 0x54, 0x20, }; +const char http_10[9] = /* "HTTP/1.0" */ { 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x30, }; +const char http_11[9] = /* "HTTP/1.1" */ { 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, }; +const char http_content_type[15] = + +/* "content-type: " */ +{ 0x63, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, +}; +const char http_texthtml[10] = /* "text/html" */ { 0x74, 0x65, 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_location[11] = /* "location: " */ { 0x6c, 0x6f, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, }; +const char http_host[7] = /* "host: " */ { 0x68, 0x6f, 0x73, 0x74, 0x3a, 0x20, }; +const char http_crnl[3] = /* "\r\n" */ { 0xd, 0xa, }; +const char http_index_html[12] = /* "/index.html" */ { 0x2f, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x2e, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_404_html[10] = /* "/404.html" */ { 0x2f, 0x34, 0x30, 0x34, 0x2e, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_referer[9] = /* "Referer:" */ { 0x52, 0x65, 0x66, 0x65, 0x72, 0x65, 0x72, 0x3a, }; +const char http_header_200[84] = + +/* "HTTP/1.0 200 OK\r\nServer: uIP/1.0 http://www.sics.se/~adam/uip/\r\nConnection: close\r\n" */ +{ 0x48, + 0x54, + 0x54, + 0x50, + 0x2f, + 0x31, + 0x2e, + 0x30, + 0x20, + 0x32, + 0x30, + 0x30, + 0x20, + 0x4f, + 0x4b, + 0xd, + 0xa, + 0x53, + 0x65, + 0x72, + 0x76, + 0x65, + 0x72, + 0x3a, + 0x20, + 0x75, + 0x49, + 0x50, + 0x2f, + 0x31, + 0x2e, + 0x30, + 0x20, + 0x68, + 0x74, + 0x74, + 0x70, + 0x3a, + 0x2f, + 0x2f, + 0x77, + 0x77, + 0x77, + 0x2e, + 0x73, + 0x69, + 0x63, + 0x73, + 0x2e, + 0x73, + 0x65, + 0x2f, + 0x7e, + 0x61, + 0x64, + 0x61, + 0x6d, + 0x2f, + 0x75, + 0x69, + 0x70, + 0x2f, + 0xd, + 0xa, + 0x43, + 0x6f, + 0x6e, + 0x6e, + 0x65, + 0x63, + 0x74, + 0x69, + 0x6f, + 0x6e, + 0x3a, + 0x20, + 0x63, + 0x6c, + 0x6f, + 0x73, + 0x65, + 0xd, + 0xa, +}; +const char http_header_404[91] = + +/* "HTTP/1.0 404 Not found\r\nServer: uIP/1.0 http://www.sics.se/~adam/uip/\r\nConnection: close\r\n" */ +{ 0x48, + 0x54, + 0x54, + 0x50, + 0x2f, + 0x31, + 0x2e, + 0x30, + 0x20, + 0x34, + 0x30, + 0x34, + 0x20, + 0x4e, + 0x6f, + 0x74, + 0x20, + 0x66, + 0x6f, + 0x75, + 0x6e, + 0x64, + 0xd, + 0xa, + 0x53, + 0x65, + 0x72, + 0x76, + 0x65, + 0x72, + 0x3a, + 0x20, + 0x75, + 0x49, + 0x50, + 0x2f, + 0x31, + 0x2e, + 0x30, + 0x20, + 0x68, + 0x74, + 0x74, + 0x70, + 0x3a, + 0x2f, + 0x2f, + 0x77, + 0x77, + 0x77, + 0x2e, + 0x73, + 0x69, + 0x63, + 0x73, + 0x2e, + 0x73, + 0x65, + 0x2f, + 0x7e, + 0x61, + 0x64, + 0x61, + 0x6d, + 0x2f, + 0x75, + 0x69, + 0x70, + 0x2f, + 0xd, + 0xa, + 0x43, + 0x6f, + 0x6e, + 0x6e, + 0x65, + 0x63, + 0x74, + 0x69, + 0x6f, + 0x6e, + 0x3a, + 0x20, + 0x63, + 0x6c, + 0x6f, + 0x73, + 0x65, + 0xd, + 0xa, +}; +const char http_content_type_plain[29] = + +/* "Content-type: text/plain\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x74, + 0x65, + 0x78, + 0x74, + 0x2f, + 0x70, + 0x6c, + 0x61, + 0x69, + 0x6e, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_html[28] = + +/* "Content-type: text/html\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x74, + 0x65, + 0x78, + 0x74, + 0x2f, + 0x68, + 0x74, + 0x6d, + 0x6c, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_css[27] = + +/* "Content-type: text/css\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x74, + 0x65, + 0x78, + 0x74, + 0x2f, + 0x63, + 0x73, + 0x73, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_text[28] = + +/* "Content-type: text/text\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x74, + 0x65, + 0x78, + 0x74, + 0x2f, + 0x74, + 0x65, + 0x78, + 0x74, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_png[28] = + +/* "Content-type: image/png\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x69, + 0x6d, + 0x61, + 0x67, + 0x65, + 0x2f, + 0x70, + 0x6e, + 0x67, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_gif[28] = + +/* "Content-type: image/gif\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x69, + 0x6d, + 0x61, + 0x67, + 0x65, + 0x2f, + 0x67, + 0x69, + 0x66, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_jpg[29] = + +/* "Content-type: image/jpeg\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x69, + 0x6d, + 0x61, + 0x67, + 0x65, + 0x2f, + 0x6a, + 0x70, + 0x65, + 0x67, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_content_type_binary[43] = + +/* "Content-type: application/octet-stream\r\n\r\n" */ +{ 0x43, + 0x6f, + 0x6e, + 0x74, + 0x65, + 0x6e, + 0x74, + 0x2d, + 0x74, + 0x79, + 0x70, + 0x65, + 0x3a, + 0x20, + 0x61, + 0x70, + 0x70, + 0x6c, + 0x69, + 0x63, + 0x61, + 0x74, + 0x69, + 0x6f, + 0x6e, + 0x2f, + 0x6f, + 0x63, + 0x74, + 0x65, + 0x74, + 0x2d, + 0x73, + 0x74, + 0x72, + 0x65, + 0x61, + 0x6d, + 0xd, + 0xa, + 0xd, + 0xa, +}; +const char http_html[6] = /* ".html" */ { 0x2e, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_shtml[7] = /* ".shtml" */ { 0x2e, 0x73, 0x68, 0x74, 0x6d, 0x6c, }; +const char http_htm[5] = /* ".htm" */ { 0x2e, 0x68, 0x74, 0x6d, }; +const char http_css[5] = /* ".css" */ { 0x2e, 0x63, 0x73, 0x73, }; +const char http_png[5] = /* ".png" */ { 0x2e, 0x70, 0x6e, 0x67, }; +const char http_gif[5] = /* ".gif" */ { 0x2e, 0x67, 0x69, 0x66, }; +const char http_jpg[5] = /* ".jpg" */ { 0x2e, 0x6a, 0x70, 0x67, }; +const char http_text[5] = /* ".txt" */ { 0x2e, 0x74, 0x78, 0x74, }; +const char http_txt[5] = /* ".txt" */ { 0x2e, 0x74, 0x78, 0x74, }; diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-cgi.c b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-cgi.c new file mode 100644 index 000000000..23851d3e1 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-cgi.c @@ -0,0 +1,169 @@ +/** + * \addtogroup httpd + * @{ + */ + +/** + * \file + * Web server script interface + * \author + * Adam Dunkels + * + */ + +/* + * Copyright (c) 2001-2006, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: httpd-cgi.c,v 1.2 2006/06/11 21:46:37 adam Exp $ + * + */ +#include "net/uip.h" +#include "net/psock.h" +#include "httpd.h" +#include "httpd-cgi.h" +#include "httpd-fs.h" + +#include +#include + +HTTPD_CGI_CALL( file, "file-stats", file_stats ); +HTTPD_CGI_CALL( tcp, "tcp-connections", tcp_stats ); +HTTPD_CGI_CALL( net, "net-stats", net_stats ); + +static const struct httpd_cgi_call *calls[] = { &file, &tcp, &net, NULL }; + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( nullfunction ( struct httpd_state *s, char *ptr ) ) +{ + PSOCK_BEGIN( &s->sout ); + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ +httpd_cgifunction httpd_cgi( char *name ) +{ + const struct httpd_cgi_call **f; + + /* Find the matching name in the table, return the function. */ + for( f = calls; *f != NULL; ++f ) + { + if( strncmp((*f)->name, name, strlen((*f)->name)) == 0 ) + { + return( *f )->function; + } + } + + return nullfunction; +} + +/*---------------------------------------------------------------------------*/ +static unsigned short generate_file_stats( void *arg ) +{ + char *f = ( char * ) arg; + return snprintf( ( char * ) uip_appdata, UIP_APPDATA_SIZE, "%5u", httpd_fs_count(f) ); +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( file_stats ( struct httpd_state *s, char *ptr ) ) +{ + PSOCK_BEGIN( &s->sout ); + + PSOCK_GENERATOR_SEND( &s->sout, generate_file_stats, strchr(ptr, ' ') + 1 ); + + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ +static const char closed[] = /* "CLOSED",*/ { 0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0 }; +static const char syn_rcvd[] = /* "SYN-RCVD",*/ { 0x53, 0x59, 0x4e, 0x2d, 0x52, 0x43, 0x56, 0x44, 0 }; +static const char syn_sent[] = /* "SYN-SENT",*/ { 0x53, 0x59, 0x4e, 0x2d, 0x53, 0x45, 0x4e, 0x54, 0 }; +static const char established[] = /* "ESTABLISHED",*/ { 0x45, 0x53, 0x54, 0x41, 0x42, 0x4c, 0x49, 0x53, 0x48, 0x45, 0x44, 0 }; +static const char fin_wait_1[] = /* "FIN-WAIT-1",*/ { 0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49, 0x54, 0x2d, 0x31, 0 }; +static const char fin_wait_2[] = /* "FIN-WAIT-2",*/ { 0x46, 0x49, 0x4e, 0x2d, 0x57, 0x41, 0x49, 0x54, 0x2d, 0x32, 0 }; +static const char closing[] = /* "CLOSING",*/ { 0x43, 0x4c, 0x4f, 0x53, 0x49, 0x4e, 0x47, 0 }; +static const char time_wait[] = /* "TIME-WAIT,"*/ { 0x54, 0x49, 0x4d, 0x45, 0x2d, 0x57, 0x41, 0x49, 0x54, 0 }; +static const char last_ack[] = /* "LAST-ACK"*/ { 0x4c, 0x41, 0x53, 0x54, 0x2d, 0x41, 0x43, 0x4b, 0 }; + +static const char *states[] = { closed, syn_rcvd, syn_sent, established, fin_wait_1, fin_wait_2, closing, time_wait, last_ack }; + +static unsigned short generate_tcp_stats( void *arg ) +{ + struct uip_conn *conn; + struct httpd_state *s = ( struct httpd_state * ) arg; + + conn = &uip_conns[s->count]; + return snprintf( ( char * ) uip_appdata, UIP_APPDATA_SIZE, + "%d%u.%u.%u.%u:%u%s%u%u%c %c\r\n", htons(conn->lport), + htons(conn->ripaddr[0]) >> 8, htons(conn->ripaddr[0]) & 0xff, htons(conn->ripaddr[1]) >> 8, + htons(conn->ripaddr[1]) & 0xff, htons(conn->rport), states[conn->tcpstateflags & UIP_TS_MASK], conn->nrtx, conn->timer, + (uip_outstanding(conn)) ? '*' : ' ', (uip_stopped(conn)) ? '!' : ' ' ); +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( tcp_stats ( struct httpd_state *s, char *ptr ) ) +{ + PSOCK_BEGIN( &s->sout ); + + for( s->count = 0; s->count < UIP_CONNS; ++s->count ) + { + if( (uip_conns[s->count].tcpstateflags & UIP_TS_MASK) != UIP_CLOSED ) + { + PSOCK_GENERATOR_SEND( &s->sout, generate_tcp_stats, s ); + } + } + + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ +static unsigned short generate_net_stats( void *arg ) +{ + struct httpd_state *s = ( struct httpd_state * ) arg; + return snprintf( ( char * ) uip_appdata, UIP_APPDATA_SIZE, "%5u\n", (( uip_stats_t * ) &uip_stat)[s->count] ); +} + +static PT_THREAD( net_stats ( struct httpd_state *s, char *ptr ) ) +{ + PSOCK_BEGIN( &s->sout ); + +#if UIP_STATISTICS + for( s->count = 0; s->count < sizeof(uip_stat) / sizeof(uip_stats_t); ++s->count ) + { + PSOCK_GENERATOR_SEND( &s->sout, generate_net_stats, s ); + } + +#endif /* UIP_STATISTICS */ + + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.c b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.c new file mode 100644 index 000000000..12084ce67 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + * $Id: httpd-fs.c,v 1.1 2006/06/07 09:13:08 adam Exp $ + */ +#include "httpd.h" +#include "httpd-fs.h" +#include "httpd-fsdata.h" + +#ifndef NULL +#define NULL 0 +#endif /* NULL */ + +#include "httpd-fsdata.c" + +#if HTTPD_FS_STATISTICS +static u16_t count[HTTPD_FS_NUMFILES]; +#endif /* HTTPD_FS_STATISTICS */ + +/*-----------------------------------------------------------------------------------*/ +static u8_t httpd_fs_strcmp( const char *str1, const char *str2 ) +{ + u8_t i; + i = 0; +loop: + if( str2[i] == 0 || str1[i] == '\r' || str1[i] == '\n' ) + { + return 0; + } + + if( str1[i] != str2[i] ) + { + return 1; + } + + ++i; + goto loop; +} + +/*-----------------------------------------------------------------------------------*/ +int httpd_fs_open( const char *name, struct httpd_fs_file *file ) +{ +#if HTTPD_FS_STATISTICS + u16_t i = 0; +#endif /* HTTPD_FS_STATISTICS */ + struct httpd_fsdata_file_noconst *f; + + for( f = ( struct httpd_fsdata_file_noconst * ) HTTPD_FS_ROOT; f != NULL; f = ( struct httpd_fsdata_file_noconst * ) f->next ) + { + if( httpd_fs_strcmp(name, f->name) == 0 ) + { + file->data = f->data; + file->len = f->len; +#if HTTPD_FS_STATISTICS + ++count[i]; +#endif /* HTTPD_FS_STATISTICS */ + return 1; + } + +#if HTTPD_FS_STATISTICS + ++i; +#endif /* HTTPD_FS_STATISTICS */ + } + + return 0; +} + +/*-----------------------------------------------------------------------------------*/ +void httpd_fs_init( void ) +{ +#if HTTPD_FS_STATISTICS + u16_t i; + for( i = 0; i < HTTPD_FS_NUMFILES; i++ ) + { + count[i] = 0; + } + +#endif /* HTTPD_FS_STATISTICS */ +} + +/*-----------------------------------------------------------------------------------*/ +#if HTTPD_FS_STATISTICS +u16_t httpd_fs_count( char *name ) +{ + struct httpd_fsdata_file_noconst *f; + u16_t i; + + i = 0; + for( f = ( struct httpd_fsdata_file_noconst * ) HTTPD_FS_ROOT; f != NULL; f = ( struct httpd_fsdata_file_noconst * ) f->next ) + { + if( httpd_fs_strcmp(name, f->name) == 0 ) + { + return count[i]; + } + + ++i; + } + + return 0; +} + +#endif /* HTTPD_FS_STATISTICS */ + +/*-----------------------------------------------------------------------------------*/ diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.h b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.h new file mode 100644 index 000000000..afc6bbc56 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fs.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + * $Id: httpd-fs.h,v 1.1 2006/06/07 09:13:08 adam Exp $ + */ +#ifndef __HTTPD_FS_H__ +#define __HTTPD_FS_H__ + +#define HTTPD_FS_STATISTICS 1 + +struct httpd_fs_file +{ + char *data; + int len; +}; + +/* file must be allocated by caller and will be filled in + by the function. */ +int httpd_fs_open( const char *name, struct httpd_fs_file *file ); + +#ifdef HTTPD_FS_STATISTICS +#if HTTPD_FS_STATISTICS == 1 +u16_t httpd_fs_count( char *name ); +#endif /* HTTPD_FS_STATISTICS */ +#endif /* HTTPD_FS_STATISTICS */ + +void httpd_fs_init( void ); +#endif /* __HTTPD_FS_H__ */ diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fsdata.h b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fsdata.h new file mode 100644 index 000000000..6fe210cc7 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd-fsdata.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2001, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the lwIP TCP/IP stack. + * + * Author: Adam Dunkels + * + * $Id: httpd-fsdata.h,v 1.1 2006/06/17 22:41:14 adamdunkels Exp $ + */ +#ifndef __HTTPD_FSDATA_H__ +#define __HTTPD_FSDATA_H__ + +struct httpd_fsdata_file { + const struct httpd_fsdata_file *next; + const char *name; + const char *data; + const int len; +#ifdef HTTPD_FS_STATISTICS +#if HTTPD_FS_STATISTICS == 1 + u16_t count; +#endif /* HTTPD_FS_STATISTICS */ +#endif /* HTTPD_FS_STATISTICS */ +}; + +struct httpd_fsdata_file_noconst { + struct httpd_fsdata_file *next; + char *name; + char *data; + int len; +#ifdef HTTPD_FS_STATISTICS +#if HTTPD_FS_STATISTICS == 1 + u16_t count; +#endif /* HTTPD_FS_STATISTICS */ +#endif /* HTTPD_FS_STATISTICS */ +}; + +#endif /* __HTTPD_FSDATA_H__ */ diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd.c b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd.c new file mode 100644 index 000000000..9ef8844d9 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd.c @@ -0,0 +1,388 @@ +/** + * \addtogroup apps + * @{ + */ + +/** + * \defgroup httpd Web server + * @{ + * The uIP web server is a very simplistic implementation of an HTTP + * server. It can serve web pages and files from a read-only ROM + * filesystem, and provides a very small scripting language. + + */ + +/** + * \file + * Web server + * \author + * Adam Dunkels + */ + +/* + * Copyright (c) 2004, 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. 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 + * + * $Id: httpd.c,v 1.2 2006/06/11 21:46:38 adam Exp $ + */ +#include "net/uip.h" +#include "net/httpd.h" +#include "net/httpd-fs.h" +#include "net/httpd-cgi.h" +#include "net/http-strings.h" + +#include + +#define STATE_WAITING 0 +#define STATE_OUTPUT 1 + +#define ISO_nl 0x0a +#define ISO_space 0x20 +#define ISO_bang 0x21 +#define ISO_percent 0x25 +#define ISO_period 0x2e +#define ISO_slash 0x2f +#define ISO_colon 0x3a + +/*---------------------------------------------------------------------------*/ +static unsigned short generate_part_of_file( void *state ) +{ + struct httpd_state *s = ( struct httpd_state * ) state; + + if( s->file.len > uip_mss() ) + { + s->len = uip_mss(); + } + else + { + s->len = s->file.len; + } + + memcpy( uip_appdata, s->file.data, s->len ); + + return s->len; +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( send_file ( struct httpd_state *s ) ) +{ + PSOCK_BEGIN( &s->sout ); + + do + { + PSOCK_GENERATOR_SEND( &s->sout, generate_part_of_file, s ); + s->file.len -= s->len; + s->file.data += s->len; + } while( s->file.len > 0 ); + + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( send_part_of_file ( struct httpd_state *s ) ) +{ + PSOCK_BEGIN( &s->sout ); + + PSOCK_SEND( &s->sout, s->file.data, s->len ); + + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ +static void next_scriptstate( struct httpd_state *s ) +{ + char *p; + p = strchr( s->scriptptr, ISO_nl ) + 1; + s->scriptlen -= ( unsigned short ) ( p - s->scriptptr ); + s->scriptptr = p; +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( handle_script ( struct httpd_state *s ) ) +{ + char *ptr; + + PT_BEGIN( &s->scriptpt ); + + while( s->file.len > 0 ) + { + /* Check if we should start executing a script. */ + if( *s->file.data == ISO_percent && *(s->file.data + 1) == ISO_bang ) + { + s->scriptptr = s->file.data + 3; + s->scriptlen = s->file.len - 3; + if( *(s->scriptptr - 1) == ISO_colon ) + { + httpd_fs_open( s->scriptptr + 1, &s->file ); + PT_WAIT_THREAD( &s->scriptpt, send_file(s) ); + } + else + { + PT_WAIT_THREAD( &s->scriptpt, httpd_cgi(s->scriptptr) (s, s->scriptptr) ); + } + + next_scriptstate( s ); + + /* The script is over, so we reset the pointers and continue + sending the rest of the file. */ + s->file.data = s->scriptptr; + s->file.len = s->scriptlen; + } + else + { + /* See if we find the start of script marker in the block of HTML + to be sent. */ + if( s->file.len > uip_mss() ) + { + s->len = uip_mss(); + } + else + { + s->len = s->file.len; + } + + if( *s->file.data == ISO_percent ) + { + ptr = strchr( s->file.data + 1, ISO_percent ); + } + else + { + ptr = strchr( s->file.data, ISO_percent ); + } + + if( ptr != NULL && ptr != s->file.data ) + { + s->len = ( int ) ( ptr - s->file.data ); + if( s->len >= uip_mss() ) + { + s->len = uip_mss(); + } + } + + PT_WAIT_THREAD( &s->scriptpt, send_part_of_file(s) ); + s->file.data += s->len; + s->file.len -= s->len; + } + } + + PT_END( &s->scriptpt ); +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( send_headers ( struct httpd_state *s, const char *statushdr ) ) +{ + char *ptr; + + PSOCK_BEGIN( &s->sout ); + + PSOCK_SEND_STR( &s->sout, statushdr ); + + ptr = strrchr( s->filename, ISO_period ); + if( ptr == NULL ) + { + PSOCK_SEND_STR( &s->sout, http_content_type_binary ); + } + else if( strncmp(http_html, ptr, 5) == 0 || strncmp(http_shtml, ptr, 6) == 0 ) + { + PSOCK_SEND_STR( &s->sout, http_content_type_html ); + } + else if( strncmp(http_css, ptr, 4) == 0 ) + { + PSOCK_SEND_STR( &s->sout, http_content_type_css ); + } + else if( strncmp(http_png, ptr, 4) == 0 ) + { + PSOCK_SEND_STR( &s->sout, http_content_type_png ); + } + else if( strncmp(http_gif, ptr, 4) == 0 ) + { + PSOCK_SEND_STR( &s->sout, http_content_type_gif ); + } + else if( strncmp(http_jpg, ptr, 4) == 0 ) + { + PSOCK_SEND_STR( &s->sout, http_content_type_jpg ); + } + else + { + PSOCK_SEND_STR( &s->sout, http_content_type_plain ); + } + + PSOCK_END( &s->sout ); +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( handle_output ( struct httpd_state *s ) ) +{ + char *ptr; + + PT_BEGIN( &s->outputpt ); + + if( !httpd_fs_open(s->filename, &s->file) ) + { + httpd_fs_open( http_404_html, &s->file ); + strcpy( s->filename, http_404_html ); + PT_WAIT_THREAD( &s->outputpt, send_headers(s, http_header_404) ); + PT_WAIT_THREAD( &s->outputpt, send_file(s) ); + } + else + { + PT_WAIT_THREAD( &s->outputpt, send_headers(s, http_header_200) ); + ptr = strchr( s->filename, ISO_period ); + if( ptr != NULL && strncmp(ptr, http_shtml, 6) == 0 ) + { + PT_INIT( &s->scriptpt ); + PT_WAIT_THREAD( &s->outputpt, handle_script(s) ); + } + else + { + PT_WAIT_THREAD( &s->outputpt, send_file(s) ); + } + } + + PSOCK_CLOSE( &s->sout ); + PT_END( &s->outputpt ); +} + +/*---------------------------------------------------------------------------*/ +static PT_THREAD( handle_input ( struct httpd_state *s ) ) +{ + PSOCK_BEGIN( &s->sin ); + + PSOCK_READTO( &s->sin, ISO_space ); + + if( strncmp(s->inputbuf, http_get, 4) != 0 ) + { + PSOCK_CLOSE_EXIT( &s->sin ); + } + + PSOCK_READTO( &s->sin, ISO_space ); + + if( s->inputbuf[0] != ISO_slash ) + { + PSOCK_CLOSE_EXIT( &s->sin ); + } + + if( s->inputbuf[1] == ISO_space ) + { + strncpy( s->filename, http_index_html, sizeof(s->filename) ); + } + else + { + s->inputbuf[PSOCK_DATALEN( &s->sin ) - 1] = 0; + strncpy( s->filename, &s->inputbuf[0], sizeof(s->filename) ); + } + + /* httpd_log_file(uip_conn->ripaddr, s->filename);*/ + s->state = STATE_OUTPUT; + + while( 1 ) + { + PSOCK_READTO( &s->sin, ISO_nl ); + + if( strncmp(s->inputbuf, http_referer, 8) == 0 ) + { + s->inputbuf[PSOCK_DATALEN( &s->sin ) - 2] = 0; + + /* httpd_log(&s->inputbuf[9]);*/ + } + } + + PSOCK_END( &s->sin ); +} + +/*---------------------------------------------------------------------------*/ +static void handle_connection( struct httpd_state *s ) +{ + handle_input( s ); + if( s->state == STATE_OUTPUT ) + { + handle_output( s ); + } +} + +/*---------------------------------------------------------------------------*/ +void httpd_appcall( void ) +{ + struct httpd_state *s = ( struct httpd_state * ) &( uip_conn->appstate ); + + if( uip_closed() || uip_aborted() || uip_timedout() ) + { + } + else if( uip_connected() ) + { + PSOCK_INIT( &s->sin, s->inputbuf, sizeof(s->inputbuf) - 1 ); + PSOCK_INIT( &s->sout, s->inputbuf, sizeof(s->inputbuf) - 1 ); + PT_INIT( &s->outputpt ); + s->state = STATE_WAITING; + + /* timer_set(&s->timer, CLOCK_SECOND * 100);*/ + s->timer = 0; + handle_connection( s ); + } + else if( s != NULL ) + { + if( uip_poll() ) + { + ++s->timer; + if( s->timer >= 20 ) + { + uip_abort(); + } + } + else + { + s->timer = 0; + } + + handle_connection( s ); + } + else + { + uip_abort(); + } +} + +/*---------------------------------------------------------------------------*/ + +/** + * \brief Initialize the web server + * + * This function initializes the web server and should be + * called at system boot-up. + */ +void httpd_init( void ) +{ + uip_listen( HTONS(80) ); +} + +/*---------------------------------------------------------------------------*/ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd.h b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd.h new file mode 100644 index 000000000..cd2b891e2 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/httpd.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2001-2005, Adam Dunkels. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This file is part of the uIP TCP/IP stack. + * + * $Id: httpd.h,v 1.2 2006/06/11 21:46:38 adam Exp $ + * + */ +#ifndef __HTTPD_H__ +#define __HTTPD_H__ + +#include "net/psock.h" +#include "httpd-fs.h" + +struct httpd_state +{ + unsigned char timer; + struct psock sin, sout; + struct pt outputpt, scriptpt; + char inputbuf[50]; + char filename[20]; + char state; + struct httpd_fs_file file; + int len; + char *scriptptr; + int scriptlen; + + unsigned short count; +}; + +void httpd_init( void ); +void httpd_appcall( void ); + +void httpd_log( char *msg ); +void httpd_log_file( u16_t *requester, char *file ); +#endif /* __HTTPD_H__ */ diff --git a/Demo/Common/ethernet/FreeTCPIP/apps/httpd/makefsdata b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/makefsdata new file mode 100644 index 000000000..b2109abdb --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/apps/httpd/makefsdata @@ -0,0 +1,78 @@ +#!/usr/bin/perl + +open(OUTPUT, "> httpd-fsdata.c"); + +chdir("httpd-fs"); + +opendir(DIR, "."); +@files = grep { !/^\./ && !/(CVS|~)/ } readdir(DIR); +closedir(DIR); + +foreach $file (@files) { + + if(-d $file && $file !~ /^\./) { + print "Processing directory $file\n"; + opendir(DIR, $file); + @newfiles = grep { !/^\./ && !/(CVS|~)/ } readdir(DIR); + closedir(DIR); + printf "Adding files @newfiles\n"; + @files = (@files, map { $_ = "$file/$_" } @newfiles); + next; + } +} + +foreach $file (@files) { + if(-f $file) { + + print "Adding file $file\n"; + + open(FILE, $file) || die "Could not open file $file\n"; + + $file =~ s-^-/-; + $fvar = $file; + $fvar =~ s-/-_-g; + $fvar =~ s-\.-_-g; + # for AVR, add PROGMEM here + print(OUTPUT "static const unsigned char data".$fvar."[] = {\n"); + print(OUTPUT "\t/* $file */\n\t"); + for($j = 0; $j < length($file); $j++) { + printf(OUTPUT "%#02x, ", unpack("C", substr($file, $j, 1))); + } + printf(OUTPUT "0,\n"); + + + $i = 0; + while(read(FILE, $data, 1)) { + if($i == 0) { + print(OUTPUT "\t"); + } + printf(OUTPUT "%#02x, ", unpack("C", $data)); + $i++; + if($i == 10) { + print(OUTPUT "\n"); + $i = 0; + } + } + print(OUTPUT "0};\n\n"); + close(FILE); + push(@fvars, $fvar); + push(@pfiles, $file); + } +} + +for($i = 0; $i < @fvars; $i++) { + $file = $pfiles[$i]; + $fvar = $fvars[$i]; + + if($i == 0) { + $prevfile = "NULL"; + } else { + $prevfile = "file" . $fvars[$i - 1]; + } + print(OUTPUT "const struct httpd_fsdata_file file".$fvar."[] = {{$prevfile, data$fvar, "); + print(OUTPUT "data$fvar + ". (length($file) + 1) .", "); + print(OUTPUT "sizeof(data$fvar) - ". (length($file) + 1) ."}};\n\n"); +} + +print(OUTPUT "#define HTTPD_FS_ROOT file$fvars[$i - 1]\n\n"); +print(OUTPUT "#define HTTPD_FS_NUMFILES $i\n"); diff --git a/Demo/Common/ethernet/FreeTCPIP/lib/memb.h_ b/Demo/Common/ethernet/FreeTCPIP/lib/memb.h_ new file mode 100644 index 000000000..ed76d1c41 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/lib/memb.h_ @@ -0,0 +1,131 @@ +/* + * 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 Contiki operating system. + * + * Author: Adam Dunkels + * + * $Id: memb.h,v 1.6 2009/04/06 21:18:04 adamdunkels Exp $ + */ + +/** + * \addtogroup mem + * @{ + */ + +/** + * \defgroup memb Memory block management functions + * + * The memory block allocation routines provide a simple yet powerful + * set of functions for managing a set of memory blocks of fixed + * size. A set of memory blocks is statically declared with the + * MEMB() macro. Memory blocks are allocated from the declared + * memory by the memb_alloc() function, and are deallocated with the + * memb_free() function. + * + * @{ + */ + +/** + * \file + * Memory block allocation routines. + * \author + * Adam Dunkels + * + */ +#ifndef __MEMB_H__ +#define __MEMB_H__ + +#include "sys/cc.h" + +/** + * Declare a memory block. + * + * This macro is used to statically declare a block of memory that can + * be used by the block allocation functions. The macro statically + * declares a C array with a size that matches the specified number of + * blocks and their individual sizes. + * + * Example: + \code +MEMB(connections, struct connection, 16); + \endcode + * + * \param name The name of the memory block (later used with + * memb_init(), memb_alloc() and memb_free()). + * + * \param structure The name of the struct that the memory block holds + * + * \param num The total number of memory chunks in the block. + * + */ +#define MEMB( name, structure, num ) \ + static char CC_CONCAT( name, _memb_count )[num]; \ + static structure CC_CONCAT( name, _memb_mem )[num]; \ + static struct memb name = \ + { \ + sizeof( structure ), num, CC_CONCAT( name, _memb_count ), ( void * ) CC_CONCAT( name, _memb_mem ) \ + } + +struct memb +{ unsigned short size; unsigned short num; char *count; void *mem; }; + +/** + * Initialize a memory block that was declared with MEMB(). + * + * \param m A memory block previously declared with MEMB(). + */ +void memb_init( struct memb *m ); + +/** + * Allocate a memory block from a block of memory declared with MEMB(). + * + * \param m A memory block previously declared with MEMB(). + */ +void *memb_alloc( struct memb *m ); + +/** + * Deallocate a memory block from a memory block previously declared + * with MEMB(). + * + * \param m m A memory block previously declared with MEMB(). + * + * \param ptr A pointer to the memory block that is to be deallocated. + * + * \return The new reference count for the memory block (should be 0 + * if successfully deallocated) or -1 if the pointer "ptr" did not + * point to a legal memory block. + */ +char memb_free( struct memb *m, void *ptr ); + +int memb_inmemb( struct memb *m, void *ptr ); + +/** @} */ + +/** @} */ +#endif /* __MEMB_H__ */ diff --git a/Demo/Common/ethernet/FreeTCPIP/net/clock-arch.h b/Demo/Common/ethernet/FreeTCPIP/net/clock-arch.h new file mode 100644 index 000000000..cde657b62 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/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/Demo/Common/ethernet/FreeTCPIP/net/lc-switch.h b/Demo/Common/ethernet/FreeTCPIP/net/lc-switch.h new file mode 100644 index 000000000..17c881161 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/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 + * + * $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 + * + * 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/Demo/Common/ethernet/FreeTCPIP/net/lc.h b/Demo/Common/ethernet/FreeTCPIP/net/lc.h new file mode 100644 index 000000000..3ad83cd0a --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/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 + * + * $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 set in a specific function to + * capture the state of the function. After a local continuation has + * been set can be resumed 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 + * + */ + +#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 not 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/Demo/Common/ethernet/FreeTCPIP/net/pack_struct_end.h b/Demo/Common/ethernet/FreeTCPIP/net/pack_struct_end.h new file mode 100644 index 000000000..e92ed3fb5 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/pack_struct_end.h @@ -0,0 +1,7 @@ +#ifdef __GNUC__ +__attribute__( (packed) ); +#endif +#ifdef __RENESAS__ +; +#pragma unpack +#endif diff --git a/Demo/Common/ethernet/FreeTCPIP/net/pack_struct_start.h b/Demo/Common/ethernet/FreeTCPIP/net/pack_struct_start.h new file mode 100644 index 000000000..4c08937a5 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/pack_struct_start.h @@ -0,0 +1,8 @@ +#ifdef __GNUC__ + +/* Nothing to do here. */ +; +#endif +#ifdef __RENESAS__ +#pragma pack 1 +#endif diff --git a/Demo/Common/ethernet/FreeTCPIP/net/psock.h b/Demo/Common/ethernet/FreeTCPIP/net/psock.h new file mode 100644 index 000000000..8d4125878 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/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 + * + * $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 + * + */ + +#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/Demo/Common/ethernet/FreeTCPIP/net/pt.h b/Demo/Common/ethernet/FreeTCPIP/net/pt.h new file mode 100644 index 000000000..00ddd4429 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/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 + * + * $Id: pt.h,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +/** + * \addtogroup pt + * @{ + */ + +/** + * \file + * Protothreads implementation. + * \author + * Adam Dunkels + * + */ + +#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/Demo/Common/ethernet/FreeTCPIP/net/uip.h b/Demo/Common/ethernet/FreeTCPIP/net/uip.h new file mode 100644 index 000000000..709535c1e --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/uip.h @@ -0,0 +1,2167 @@ + + /** + * \addtogroup uip + * @{ + */ + +/** + * \file + * Header file for the uIP TCP/IP stack. + * \author Adam Dunkels + * \author Julien Abeille (IPv6 related code) + * \author Mathilde Durvy (IPv6 related code) + * + * The uIP TCP/IP stack header file contains definitions for a number + * of C macros that are used by uIP programs as well as internal uIP + * structures, TCP/IP header structures and function declarations. + * + */ + +/* + * 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 1.24 2009/04/06 13:18:50 nvt-se Exp $ + * + */ +#ifndef __UIP_H__ +#define __UIP_H__ + +#include "net/uipopt.h" +#include "uip-conf.h" + +/** + * Representation of an IP address. + * + */ +#if UIP_CONF_IPV6 != 0 + typedef union uip_ip6addr_t + { + u8_t u8[16]; /* Initializer, must come first!!! */ + u16_t u16[8]; + } uip_ip6addr_t; + + typedef uip_ip6addr_t uip_ipaddr_t; +#else /* UIP_CONF_IPV6 */ + typedef union uip_ip4addr_t + { + u8_t u8[4]; /* Initializer, must come first!!! */ + u16_t u16[2]; + #if 0 + u32_t u32; + #endif + } uip_ip4addr_t; + typedef uip_ip4addr_t uip_ipaddr_t; +#endif /* UIP_CONF_IPV6 */ + +/*---------------------------------------------------------------------------*/ + +/** \brief 16 bit 802.15.4 address */ +struct uip_802154_shortaddr +{ + u8_t addr[2]; +}; + +/** \brief 64 bit 802.15.4 address */ +struct uip_802154_longaddr +{ + u8_t addr[8]; +}; + +/** \brief 802.11 address */ +struct uip_80211_addr +{ + u8_t addr[6]; +}; + +/** \brief 802.3 address */ +#include "net/pack_struct_start.h" +struct uip_eth_addr +{ + u8_t addr[6]; +} +#include "net/pack_struct_end.h" + +#ifdef UIP_CONF_LL_802154 + + /** \brief 802.15.4 address */ + typedef struct uip_802154_longaddr uip_lladdr_t; + #define UIP_802154_SHORTADDR_LEN 2 + #define UIP_802154_LONGADDR_LEN 8 + #define UIP_LLADDR_LEN UIP_802154_LONGADDR_LEN +#else /*UIP_CONF_LL_802154*/ + #ifdef UIP_CONF_LL_80211 + /** \brief 802.11 address */ + typedef struct uip_80211_addr uip_lladdr_t; + #define UIP_LLADDR_LEN 6 + #else /*UIP_CONF_LL_80211*/ + + /** \brief Ethernet address */ + typedef struct uip_eth_addr uip_lladdr_t; + + #define UIP_LLADDR_LEN 6 + #endif /*UIP_CONF_LL_80211*/ +#endif /*UIP_CONF_LL_802154*/ + +//_RB_#include "net/tcpip.h" + +/*---------------------------------------------------------------------------*/ + +/* First, the functions that should be called from the + * system. Initialization, the periodic timer, and incoming packets are + * handled by the following three functions. + */ + +/** + * \defgroup uipconffunc uIP configuration functions + * @{ + * + * The uIP configuration functions are used for setting run-time + * parameters in uIP such as IP addresses. + */ + +/** + * Set the IP address of this host. + * + * The IP address is represented as a 4-byte array where the first + * octet of the IP address is put in the first member of the 4-byte + * array. + * + * Example: + \code + + uip_ipaddr_t addr; + + uip_ipaddr(&addr, 192,168,1,2); + uip_sethostaddr(&addr); + + \endcode + * \param addr A pointer to an IP address of type uip_ipaddr_t; + * + * \sa uip_ipaddr() + * + * \hideinitializer + */ +#define uip_sethostaddr( addr ) uip_ipaddr_copy( &uip_hostaddr, (addr) ) + +/** + * Get the IP address of this host. + * + * The IP address is represented as a 4-byte array where the first + * octet of the IP address is put in the first member of the 4-byte + * array. + * + * Example: + \code + uip_ipaddr_t hostaddr; + + uip_gethostaddr(&hostaddr); + \endcode + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the currently configured IP address. + * + * \hideinitializer + */ +#define uip_gethostaddr( addr ) uip_ipaddr_copy( (addr), &uip_hostaddr ) + +/** + * Set the default router's IP address. + * + * \param addr A pointer to a uip_ipaddr_t variable containing the IP + * address of the default router. + * + * \sa uip_ipaddr() + * + * \hideinitializer + */ +#define uip_setdraddr( addr ) uip_ipaddr_copy( &uip_draddr, (addr) ) + +/** + * Set the netmask. + * + * \param addr A pointer to a uip_ipaddr_t variable containing the IP + * address of the netmask. + * + * \sa uip_ipaddr() + * + * \hideinitializer + */ +#define uip_setnetmask( addr ) uip_ipaddr_copy( &uip_netmask, (addr) ) + +/** + * Get the default router's IP address. + * + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the IP address of the default router. + * + * \hideinitializer + */ +#define uip_getdraddr( addr ) uip_ipaddr_copy( (addr), &uip_draddr ) + +/** + * Get the netmask. + * + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the value of the netmask. + * + * \hideinitializer + */ +#define uip_getnetmask( addr ) uip_ipaddr_copy( (addr), &uip_netmask ) + +/** @} */ + +/** + * \defgroup uipinit uIP initialization functions + * @{ + * + * The uIP initialization functions are used for booting uIP. + */ + +/** + * uIP initialization function. + * + * This function should be called at boot up to initilize the uIP + * TCP/IP stack. + */ +void uip_init( void ); + +/** + * uIP initialization function. + * + * This function may be used at boot time to set the initial ip_id. + */ +void uip_setipid( 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 usual way of calling the function is through a for() loop like + * this: + \code + for(i = 0; i < UIP_CONNS; ++i) { + uip_periodic(i); + if(uip_len > 0) { + devicedriver_send(); + } + } + \endcode + * + * \note If you are writing a uIP device driver that needs ARP + * (Address Resolution Protocol), e.g., when running uIP over + * Ethernet, you will need to call the uip_arp_out() function before + * calling the device driver: + \code + for(i = 0; i < UIP_CONNS; ++i) { + uip_periodic(i); + if(uip_len > 0) { + uip_arp_out(); + ethernet_devicedriver_send(); + } + } + \endcode + * + * \param conn The number of the connection which is to be periodically polled. + * + * \hideinitializer + */ +#ifdef UIP_TCP +#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 ) + +/** + * Request that a particular connection should be polled. + * + * Similar to uip_periodic_conn() but does not perform any timer + * processing. The application is polled for new data. + * + * \param conn A pointer to the uip_conn struct for the connection to + * be processed. + * + * \hideinitializer + */ +#define uip_poll_conn( conn ) \ + do \ + { \ + uip_conn = conn; \ + uip_process( UIP_POLL_REQUEST ); \ + } while( 0 ) +#endif /* UIP_TCP */ + +#ifdef UIP_UDP + +/** + * Periodic processing for a UDP connection identified by its number. + * + * This function is essentially the same as uip_periodic(), but for + * UDP connections. It is called in a similar fashion as the + * uip_periodic() function: + \code + for(i = 0; i < UIP_UDP_CONNS; i++) { + uip_udp_periodic(i); + if(uip_len > 0) { + devicedriver_send(); + } + } + \endcode + * + * \note As for the uip_periodic() function, special care has to be + * taken when using uIP together with ARP and Ethernet: + \code + for(i = 0; i < UIP_UDP_CONNS; i++) { + uip_udp_periodic(i); + if(uip_len > 0) { + uip_arp_out(); + ethernet_devicedriver_send(); + } + } + \endcode + * + * \param conn The number of the UDP connection to be processed. + * + * \hideinitializer + */ +#define uip_udp_periodic( conn ) \ + do \ + { \ + uip_udp_conn = &uip_udp_conns[conn]; \ + uip_process( UIP_UDP_TIMER ); \ + } while( 0 ) + +/** + * Periodic processing for a UDP connection identified by a pointer to + * its structure. + * + * Same as uip_udp_periodic() but takes a pointer to the actual + * uip_conn struct instead of an integer as its argument. This + * function can be used to force periodic processing of a specific + * connection. + * + * \param conn A pointer to the uip_udp_conn struct for the connection + * to be processed. + * + * \hideinitializer + */ +#define uip_udp_periodic_conn( conn ) \ + do \ + { \ + uip_udp_conn = conn; \ + uip_process( UIP_UDP_TIMER ); \ + } while( 0 ) +#endif /* UIP_UDP */ + + /** \brief Abandon the reassembly of the current packet */ + void uip_reass_over( void ); + +/** + * The uIP packet buffer. + * + * The uip_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 +CCIF extern u8_t uip_buf[UIP_BUFSIZE + 2]; +#else +CCIF 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 specified host. It allocates a new connection identifier, + * sets the connection to the SYN_SENT state and sets the + * retransmission timer to 0. This will cause a TCP SYN segment to be + * sent out the next time this connection is periodically processed, + * which usually is done within 0.5 seconds after the call to + * uip_connect(). + * + * \note This function is available only if support for active open + * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h. + * + * \note Since this function requires the port number to be in network + * byte order, a conversion using 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 host. + * + * \param port A 16-bit port number in network byte order. + * + * \return A pointer to the uIP connection identifier for the new connection, + * or NULL if no connection could be allocated. + * + */ +struct uip_conn *uip_connect( 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 + * function is determined by the maximum amount of data TCP allows. uIP + * will automatically crop the data so that only the appropriate + * amount of data is sent. The function uip_mss() can be used to query + * uIP for the amount of data that actually will be sent. + * + * \note This function does not guarantee that the sent data will + * arrive at the destination. If the data is lost in the network, the + * application will be invoked with the uip_rexmit() event being + * set. The application will then have to resend the data using this + * function. + * + * \param data A pointer to the data which is to be sent. + * + * \param len The maximum amount of data bytes to be sent. + * + * \hideinitializer + */ +CCIF void uip_send( const void *data, int len ); + +/** + * The length of any incoming data that is currently available (if available) + * in the uip_appdata buffer. + * + * The test function uip_data() must first be used to check if there + * is any data available at all. + * + * \hideinitializer + */ + +/*void uip_datalen(void);*/ +#define uip_datalen() uip_len + +/** + * The length of any out-of-band data (urgent data) that has arrived + * on the connection. + * + * \note The configuration parameter UIP_URGDATA must be set for this + * function to be enabled. + * + * \hideinitializer + */ +#define uip_urgdatalen() uip_urglen + +/** + * Close the current connection. + * + * This function will close the current connection in a nice way. + * + * \hideinitializer + */ +#define uip_close() ( uip_flags = UIP_CLOSE ) + +/** + * Abort the current connection. + * + * This function will abort (reset) the current connection, and is + * usually used when an error has occurred that prevents using the + * uip_close() function. + * + * \hideinitializer + */ +#define uip_abort() ( uip_flags = UIP_ABORT ) + +/** + * Tell the sending host to stop sending data. + * + * This function will close our receiver's window so that we stop + * receiving data for the current connection. + * + * \hideinitializer + */ +#define uip_stop() ( uip_conn->tcpstateflags |= UIP_STOPPED ) + +/** + * Find out if the current connection has been previously stopped with + * uip_stop(). + * + * \hideinitializer + */ +#define uip_stopped( conn ) ( (conn)->tcpstateflags & UIP_STOPPED ) + +/** + * Restart the current connection, if is has previously been stopped + * with uip_stop(). + * + * This function will open the receiver's window again so that we + * start receiving data for the current connection. + * + * \hideinitializer + */ +#define uip_restart() \ + do \ + { \ + uip_flags |= UIP_NEWDATA; \ + uip_conn->tcpstateflags &= ~UIP_STOPPED; \ + } while( 0 ) + + /* uIP tests that can be made to determine in what state the current + connection is, and what the application function should do. */ + +/** + * Is the current connection a UDP connection? + * + * This function checks whether the current connection is a UDP connection. + * + * \hideinitializer + * + */ +#define uip_udpconnection() ( uip_conn == NULL ) + +/** + * Is new incoming data available? + * + * Will reduce to non-zero if there is new data for the application + * present at the uip_appdata pointer. The size of the data is + * available through the uip_len variable. + * + * \hideinitializer + */ +#define uip_newdata() ( uip_flags & UIP_NEWDATA ) + +/** + * Has previously sent data been acknowledged? + * + * Will reduce to non-zero if the previously sent data has been + * acknowledged by the remote host. This means that the application + * can send new data. + * + * \hideinitializer + */ +#define uip_acked() ( uip_flags & UIP_ACKDATA ) + +/** + * Has the connection just been connected? + * + * Reduces to non-zero if the current connection has been connected to + * a remote host. This will happen both if the connection has been + * actively opened (with uip_connect()) or passively opened (with + * uip_listen()). + * + * \hideinitializer + */ +#define uip_connected() ( uip_flags & UIP_CONNECTED ) + +/** + * Has the connection been closed by the other end? + * + * Is non-zero if the connection has been closed by the remote + * host. The application may then do the necessary clean-ups. + * + * \hideinitializer + */ +#define uip_closed() ( uip_flags & UIP_CLOSE ) + +/** + * Has the connection been aborted by the other end? + * + * Non-zero if the current connection has been aborted (reset) by the + * remote host. + * + * \hideinitializer + */ +#define uip_aborted() ( uip_flags & UIP_ABORT ) + +/** + * Has the connection timed out? + * + * Non-zero if the current connection has been aborted due to too many + * retransmissions. + * + * \hideinitializer + */ +#define uip_timedout() ( uip_flags & UIP_TIMEDOUT ) + +/** + * Do we need to retransmit previously data? + * + * Reduces to non-zero if the previously sent data has been lost in + * the network, and the application should retransmit it. The + * application should send the exact same data as it did the last + * time, using the uip_send() function. + * + * \hideinitializer + */ +#define uip_rexmit() ( uip_flags & UIP_REXMIT ) + +/** + * Is the connection being polled by uIP? + * + * Is non-zero if the reason the application is invoked is that the + * current connection has been idle for a while and should be + * polled. + * + * The polling event can be used for sending data without having to + * wait for the remote host to send data. + * + * \hideinitializer + */ +#define uip_poll() ( uip_flags & UIP_POLL ) + +/** + * Get the initial maximum segment size (MSS) of the current + * connection. + * + * \hideinitializer + */ +#define uip_initialmss() ( uip_conn->initialmss ) + +/** + * Get the current maximum segment size that can be sent on the current + * connection. + * + * The current maximum segment size that can be sent on the + * connection is computed from the receiver's window and the MSS of + * the connection (which also is available by calling + * uip_initialmss()). + * + * \hideinitializer + */ +#define uip_mss() ( uip_conn->mss ) + /** + * Set up a new UDP connection. + * + * This function sets up a new UDP connection. The function will + * automatically allocate an unused local port for the new + * connection. However, another port can be chosen by using the + * uip_udp_bind() call, after the uip_udp_new() function has been + * called. + * + * Example: + \code + uip_ipaddr_t addr; + struct uip_udp_conn *c; + + uip_ipaddr(&addr, 192,168,2,1); + c = uip_udp_new(&addr, 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( const 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. + */ + +/** + * Convert an IP address to four bytes separated by commas. + * + * Example: + \code + uip_ipaddr_t ipaddr; + printf("ipaddr=%d.%d.%d.%d\n", uip_ipaddr_to_quad(&ipaddr)); + \endcode + * + * \param a A pointer to a uip_ipaddr_t. + * \hideinitializer + */ +#define uip_ipaddr_to_quad( a ) ( a )->u8[0], ( a )->u8[1], ( a )->u8[2], ( a )->u8[3] + +/** + * Construct an IP address from four bytes. + * + * This function constructs an IP address of the type that uIP handles + * internally from four bytes. The function is handy for specifying IP + * addresses to use with e.g. the uip_connect() function. + * + * Example: + \code + uip_ipaddr_t ipaddr; + struct uip_conn *c; + + uip_ipaddr(&ipaddr, 192,168,1,2); + c = uip_connect(&ipaddr, HTONS(80)); + \endcode + * + * \param addr A pointer to a uip_ipaddr_t variable that will be + * filled in with the IP address. + * + * \param addr0 The first octet of the IP address. + * \param addr1 The second octet of the IP address. + * \param addr2 The third octet of the IP address. + * \param addr3 The forth octet of the IP address. + * + * \hideinitializer + */ +#define uip_ipaddr( addr, addr0, addr1, addr2, addr3 ) \ + do \ + { \ + ( addr )->u8[0] = addr0; \ + ( addr )->u8[1] = addr1; \ + ( addr )->u8[2] = addr2; \ + ( addr )->u8[3] = addr3; \ + } while( 0 ) + +/** + * Construct an IPv6 address from eight 16-bit words. + * + * This function constructs an IPv6 address. + * + * \hideinitializer + */ +#define uip_ip6addr( addr, addr0, addr1, addr2, addr3, addr4, addr5, addr6, addr7 ) \ + do \ + { \ + ( addr )->u16[0] = HTONS( addr0 ); \ + ( addr )->u16[1] = HTONS( addr1 ); \ + ( addr )->u16[2] = HTONS( addr2 ); \ + ( addr )->u16[3] = HTONS( addr3 ); \ + ( addr )->u16[4] = HTONS( addr4 ); \ + ( addr )->u16[5] = HTONS( addr5 ); \ + ( addr )->u16[6] = HTONS( addr6 ); \ + ( addr )->u16[7] = HTONS( addr7 ); \ + } while( 0 ) /** + * Construct an IPv6 address from eight 8-bit words. + * + * This function constructs an IPv6 address. + * + * \hideinitializer + */ +#define uip_ip6addr_u8 ( addr, addr0, addr1, addr2, addr3, addr4, addr5, addr6, addr7, addr8, addr9, addr10, addr11, addr12, addr13, addr14, \ + addr15 ) do \ + {\ + ( addr )->u8[0] = addr0; \ + ( addr )->u8[1] = addr1; \ + ( addr )->u8[2] = addr2; \ + ( addr )->u8[3] = addr3; \ + ( addr )->u8[4] = addr4; \ + ( addr )->u8[5] = addr5; \ + ( addr )->u8[6] = addr6; \ + ( addr )->u8[7] = addr7; \ + ( addr )->u8[8] = addr8; \ + ( addr )->u8[9] = addr9; \ + ( addr )->u8[10] = addr10; \ + ( addr )->u8[11] = addr11; \ + ( addr )->u8[12] = addr12; \ + ( addr )->u8[13] = addr13; \ + ( addr )->u8[14] = addr14; \ + ( addr )->u8[15] = addr15; \ + } while( 0 ) + /** + * Copy an IP address 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 + */ +#ifndef uip_ipaddr_copy +#define uip_ipaddr_copy( dest, src ) ( *(dest) = *(src) ) +#endif + + /** + * Compare two IP addresses + * + * Compares two IP addresses. + * + * Example: + \code + uip_ipaddr_t ipaddr1, ipaddr2; + + uip_ipaddr(&ipaddr1, 192,16,1,2); + if(uip_ipaddr_cmp(&ipaddr2, &ipaddr1)) { + printf("They are the same"); + } + \endcode + * + * \param addr1 The first IP address. + * \param addr2 The second IP address. + * + * \hideinitializer + */ +#if !UIP_CONF_IPV6 +#define uip_ipaddr_cmp( addr1, addr2 ) ( (addr1)->u16[0] == (addr2)->u16[0] && (addr1)->u16[1] == (addr2)->u16[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 + */ +#if !UIP_CONF_IPV6 +#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])) \ + ) +#else +#define uip_ipaddr_prefixcmp( addr1, addr2, length ) ( memcmp(addr1, addr2, length >> 3) == 0 ) +#endif + + /** + * Check if an address is a broadcast address for a network. + * + * Checks if an address is the broadcast address for a network. The + * network is defined by an IP address that is on the network and the + * network's netmask. + * + * \param addr The IP address. + * \param netaddr The network's IP address. + * \param netmask The network's netmask. + * + * \hideinitializer + */ + + /*#define uip_ipaddr_isbroadcast(addr, netaddr, netmask) + ((uip_ipaddr_t *)(addr)).u16 & ((uip_ipaddr_t *)(addr)).u16*/ + +/** + * Mask out the network part of an IP address. + * + * Masks out the network part of an IP address, given the address and + * the netmask. + * + * Example: + \code + uip_ipaddr_t ipaddr1, ipaddr2, netmask; + + uip_ipaddr(&ipaddr1, 192,16,1,2); + uip_ipaddr(&netmask, 255,255,255,0); + uip_ipaddr_mask(&ipaddr2, &ipaddr1, &netmask); + \endcode + * + * In the example above, the variable "ipaddr2" will contain the IP + * address 192.168.1.0. + * + * \param dest Where the result is to be placed. + * \param src The IP address. + * \param mask The netmask. + * + * \hideinitializer + */ +#define uip_ipaddr_mask( dest, src, mask ) \ + do \ + { \ + ( ( 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 ) ( (addr)->u8[0] ) + +/** + * Pick the second octet of an IP address. + * + * Picks out the second octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + 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 ) ( (addr)->u8[1] ) + +/** + * Pick the third octet of an IP address. + * + * Picks out the third octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + 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 ) ( (addr)->u8[2] ) + +/** + * Pick the fourth octet of an IP address. + * + * Picks out the fourth octet of an IP address. + * + * Example: + \code + uip_ipaddr_t ipaddr; + 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 ) ( (addr)->u8[3] ) + /** + * Convert 16-bit quantity from host byte order to network byte order. + * + * This macro is primarily used for converting constants from host + * byte order to network byte order. For converting variables to + * network byte order, use the htons() function instead. + * + * \hideinitializer + */ +#ifndef HTONS +#if UIP_BYTE_ORDER == UIP_BIG_ENDIAN +#define HTONS( n ) ( n ) +#define HTONL( n ) ( n ) +#else /* UIP_BYTE_ORDER == UIP_BIG_ENDIAN */ +#define HTONS( n ) ( u16_t ) ( (((u16_t) (n)) << 8) | (((u16_t) (n)) >> 8) ) +#define HTONL( n ) ( ((u32_t) HTONS(n) << 16) | HTONS((u32_t) (n) >> 16) ) +#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 + CCIF u16_t htons( u16_t val ); +#endif /* htons */ + +#ifndef ntohs + #define ntohs htons +#endif + +#ifndef htonl + CCIF u32_t htonl( u32_t val ); +#endif /* htonl */ + +#ifndef ntohl + #define ntohl htonl +#endif + +/** @} */ + +/** + * Pointer to the application data in the packet buffer. + * + * This pointer points to the application data when the application is + * called. If the application wishes to send data, the application may + * use this space to write the data into before calling uip_send(). + */ +CCIF extern void *uip_appdata; + +#if UIP_URGDATA > 0 + +/* 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. + * + */ +CCIF extern u16_t uip_len; + +/** + * The length of the extension headers + */ +extern u8_t uip_ext_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 whose purpose + * is to let the application store application-specific state (e.g., + * file pointers) for the connection. The type of this field is + * configured in the "uipopt.h" header file. + */ +struct uip_conn +{ + uip_ipaddr_t ripaddr; /**< The IP address of the remote host. */ + + 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. + */ +CCIF extern struct uip_conn *uip_conn; +#ifdef UIP_TCP + +/* The array containing all uIP connections. */ +CCIF extern struct uip_conn uip_conns[UIP_CONNS]; +#endif + +/** + * \addtogroup uiparch + * @{ + */ + +/** + * 4-byte array used for the 32-bit sequence number calculations. + */ +extern u8_t uip_acc32[4]; + +/** @} */ +#if UIP_UDP == 1 +/** + * 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 */ + +struct uip_router +{ + int ( *activate ) ( void ); + int ( *deactivate ) ( void ); + uip_ipaddr_t * ( *lookup ) ( uip_ipaddr_t *destipaddr, uip_ipaddr_t *nexthop ); +}; + +#ifdef UIP_CONF_ROUTER +extern const struct uip_router *uip_router; + +/** + * uIP routing driver registration function. + */ +void uip_router_register( const struct uip_router *router ); +#endif /*UIP_CONF_ROUTER*/ + +#ifdef UIP_CONF_ICMP6 +struct uip_icmp6_conn +{ + uip_icmp6_appstate_t appstate; +}; +extern struct uip_icmp6_conn uip_icmp6_conns; +#endif /*UIP_CONF_ICMP6*/ + +/** + * The uIP TCP/IP statistics. + * + * This is the variable in which the uIP TCP/IP statistics are gathered. + */ +#if UIP_STATISTICS == 1 +extern struct uip_stats uip_stat; +#define UIP_STAT( s ) s +#else +#define UIP_STAT( s ) +#endif /* UIP_STATISTICS == 1 */ + +/** + * The structure holding the TCP/IP statistics that are gathered if + * UIP_STATISTICS is set to 1. + * + */ +struct uip_stats +{ + struct + { + uip_stats_t recv; /**< Number of received packets at the IP + layer. */ + uip_stats_t sent; /**< Number of sent packets at the IP + layer. */ + uip_stats_t forwarded; /**< Number of forwarded packets at the IP + layer. */ + uip_stats_t drop; /**< Number of dropped packets at the IP + layer. */ + uip_stats_t vhlerr; /**< Number of packets dropped due to wrong + IP version or header length. */ + uip_stats_t hblenerr; /**< Number of packets dropped due to wrong + IP length, high byte. */ + uip_stats_t lblenerr; /**< Number of packets dropped due to wrong + IP length, low byte. */ + uip_stats_t fragerr; /**< Number of packets dropped 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 recv; /**< Number of received ICMP packets. */ + uip_stats_t sent; /**< Number of sent ICMP packets. */ + uip_stats_t drop; /**< Number of dropped ICMP packets. */ + uip_stats_t typeerr; /**< Number of ICMP packets with a wrong + type. */ + uip_stats_t chkerr; /**< Number of ICMP packets with a bad + checksum. */ + } icmp; /**< ICMP statistics. */ +#ifdef UIP_TCP + struct + { + uip_stats_t recv; /**< Number of recived TCP segments. */ + uip_stats_t sent; /**< Number of sent TCP segments. */ + uip_stats_t drop; /**< Number of dropped TCP segments. */ + uip_stats_t chkerr; /**< Number of TCP segments with a bad + checksum. */ + uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK + number. */ + uip_stats_t rst; /**< Number of 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. */ +#endif +#ifdef UIP_UDP + struct + { + uip_stats_t drop; /**< Number of dropped UDP segments. */ + uip_stats_t recv; /**< Number of recived UDP segments. */ + uip_stats_t sent; /**< Number of sent UDP segments. */ + uip_stats_t chkerr; /**< Number of UDP segments with a bad + checksum. */ + } udp; /**< UDP statistics. */ +#endif /* UIP_UDP */ +#if UIP_CONF_IPV6 != 0 + struct + { + uip_stats_t drop; /**< Number of dropped ND6 packets. */ + uip_stats_t recv; /**< Number of recived ND6 packets */ + uip_stats_t sent; /**< Number of sent ND6 packets */ + } nd6; +#endif /*UIP_CONF_IPV6*/ +}; + +/*---------------------------------------------------------------------------*/ + +/* All the stuff below this point is internal to uIP and should not be + * used directly by an application or by a device driver. + */ + +/*---------------------------------------------------------------------------*/ + +/* 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 + * information. + */ +CCIF 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 mutually exclusive. Note that these flags + should *NOT* be accessed directly, but only through the uIP + functions/macros. */ +#define UIP_ACKDATA 1 /* Signifies that the outstanding data was + acked and the application should send + out new data instead of retransmitting + the last data. */ +#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent + us new data. */ +#define UIP_REXMIT 4 /* Tells the application to retransmit the + data that was last sent. */ +#define UIP_POLL 8 /* Used for polling the application, to + check if the application has data that + it wants to send. */ +#define UIP_CLOSE 16 /* The remote host has closed the + connection, thus the connection has + gone away. Or the application signals + that it wants to close the + connection. */ +#define UIP_ABORT 32 /* The remote host has aborted the + connection, thus the connection has + gone away. Or the application signals + that it wants to abort the + connection. */ +#define UIP_CONNECTED 64 /* We have got a connection from a remote + host and have set up a new connection + for it, or an active connection has + been successfully established. */ + +#define UIP_TIMEDOUT 128 /* The connection has been aborted due to + too many retransmissions. */ + +/** + * \brief process the options within a hop by hop or destination option header + * \retval 0: nothing to send, + * \retval 1: drop pkt + * \retval 2: ICMP error message to send +*/ + +/*static u8_t +uip_ext_hdr_options_process(); */ + +/* 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 macros defined in this file. */ +#define UIP_DATA 1 /* Tells uIP that there is incoming + data in the uip_buf buffer. The + length of the data is stored in the + global variable uip_len. */ +#define UIP_TIMER 2 /* Tells uIP that the periodic timer + has fired. */ +#define UIP_POLL_REQUEST 3 /* Tells uIP that a connection should + be polled. */ +#define UIP_UDP_SEND_CONN 4 /* Tells uIP that a UDP datagram + should be constructed in the + uip_buf buffer. */ +#ifdef 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. */ +#include "net/pack_struct_start.h" +struct uip_tcpip_hdr +{ +#if UIP_CONF_IPV6 != 0 + /* 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; + uip_ipaddr_t srcipaddr, destipaddr; +#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]; +} + +#include "net/pack_struct_end.h" + +/* The ICMP and IP headers. */ +#include "net/pack_struct_start.h" +struct uip_icmpip_hdr +{ +#if UIP_CONF_IPV6 != 0 + /* 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; + uip_ipaddr_t srcipaddr, destipaddr; +#endif /* UIP_CONF_IPV6 */ + + /* ICMP header. */ + u8_t type, icode; + u16_t icmpchksum; +#if !UIP_CONF_IPV6 + u16_t id, seqno; + u8_t payload[1]; +#endif /* !UIP_CONF_IPV6 */ +} + +#include "net/pack_struct_end.h" + +/* The UDP and IP headers. */ +#include "net/pack_struct_start.h" +struct uip_udpip_hdr +{ +#if UIP_CONF_IPV6 != 0 + /* 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; + uip_ipaddr_t srcipaddr, destipaddr; +#endif /* UIP_CONF_IPV6 */ + + /* UDP header. */ + u16_t srcport, destport; + u16_t udplen; + u16_t udpchksum; +} + +#include "net/pack_struct_end.h" + +/* + * In IPv6 the length of the L3 headers before the transport header is + * not fixed, due to the possibility to include extension option headers + * after the IP header. hence we split here L3 and L4 headers + */ + +/* The IP header */ +struct uip_ip_hdr +{ +#if UIP_CONF_IPV6 != 0 + /* IPV6 header */ + u8_t vtc; + u8_t 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; + uip_ipaddr_t srcipaddr, destipaddr; +#endif /* UIP_CONF_IPV6 */ +}; + +/* + * IPv6 extension option headers: we are able to process + * the 4 extension headers defined in RFC2460 (IPv6): + * - Hop by hop option header, destination option header: + * These two are not used by any core IPv6 protocol, hence + * we just read them and go to the next. They convey options, + * the options defined in RFC2460 are Pad1 and PadN, which do + * some padding, and that we do not need to read (the length + * field in the header is enough) + * - Routing header: this one is most notably used by MIPv6, + * which we do not implement, hence we just read it and go + * to the next + * - Fragmentation header: we read this header and are able to + * reassemble packets + * + * We do not offer any means to send packets with extension headers + * + * We do not implement Authentication and ESP headers, which are + * used in IPSec and defined in RFC4302,4303,4305,4385 + */ + +/* common header part */ +struct uip_ext_hdr +{ + u8_t next; + u8_t len; +}; + +/* Hop by Hop option header */ +struct uip_hbho_hdr +{ + u8_t next; + u8_t len; +}; + +/* destination option header */ +struct uip_desto_hdr +{ + u8_t next; + u8_t len; +}; + +/* We do not define structures for PAD1 and PADN options */ + +/* + * routing header + * the routing header as 4 common bytes, then routing header type + * specific data there are several types of routing header. Type 0 was + * deprecated as per RFC5095 most notable other type is 2, used in + * RFC3775 (MIPv6) here we do not implement MIPv6, so we just need to + * parse the 4 first bytes + */ +struct uip_routing_hdr +{ + u8_t next; + u8_t len; + u8_t routing_type; + u8_t seg_left; +}; + +/* fragmentation header */ +struct uip_frag_hdr +{ + u8_t next; + u8_t res; + u16_t offsetresmore; + u32_t id; +}; + +/* + * an option within the destination or hop by hop option headers + * it contains type an length, which is true for all options but PAD1 + */ +struct uip_ext_hdr_opt +{ + u8_t type; + u8_t len; +}; + +/* PADN option */ +struct uip_ext_hdr_opt_padn +{ + u8_t opt_type; + u8_t opt_len; +}; + +/* TCP header */ +struct uip_tcp_hdr +{ + u16_t srcport; + u16_t destport; + u8_t seqno[4]; + u8_t ackno[4]; + u8_t tcpoffset; + u8_t flags; + u8_t wnd[2]; + u16_t tcpchksum; + u8_t urgp[2]; + u8_t optdata[4]; +}; + +/* The ICMP headers. */ +struct uip_icmp_hdr +{ + u8_t type, icode; + u16_t icmpchksum; +#if !UIP_CONF_IPV6 + u16_t id, seqno; +#endif /* !UIP_CONF_IPV6 */ +}; + +/* The UDP headers. */ +struct uip_udp_hdr +{ + u16_t srcport; + u16_t destport; + u16_t udplen; + u16_t udpchksum; +}; + +/** + * The buffer size available for user data in the \ref uip_buf buffer. + * + * This macro holds the available size for user data in the \ref + * uip_buf buffer. The macro is intended to be used for checking + * bounds of available user data. + * + * Example: + \code + snprintf(uip_appdata, UIP_APPDATA_SIZE, "%u\n", i); + \endcode + * + * \hideinitializer + */ +#define UIP_APPDATA_SIZE ( UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN ) +#define UIP_APPDATA_PTR ( void * ) &uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN] + +#define UIP_PROTO_ICMP 1 +#define UIP_PROTO_TCP 6 +#define UIP_PROTO_UDP 17 +#define UIP_PROTO_ICMP6 58 + +#if UIP_CONF_IPV6 != 0 + +/** @{ */ + +/** \brief extension headers types */ +#define UIP_PROTO_HBHO 0 +#define UIP_PROTO_DESTO 60 +#define UIP_PROTO_ROUTING 43 +#define UIP_PROTO_FRAG 44 +#define UIP_PROTO_NONE 59 + +/** @} */ + +/** @{ */ + +/** \brief Destination and Hop By Hop extension headers option types */ +#define UIP_EXT_HDR_OPT_PAD1 0 +#define UIP_EXT_HDR_OPT_PADN 1 + +/** @} */ + +/** @{ */ + +/** + * \brief Bitmaps for extension header processing + * + * When processing extension headers, we should record somehow which one we + * see, because you cannot have twice the same header, except for destination + * We store all this in one u8_t bitmap one bit for each header expected. The + * order in the bitmap is the order recommended in RFC2460 + */ +#define UIP_EXT_HDR_BITMAP_HBHO 0x01 +#define UIP_EXT_HDR_BITMAP_DESTO1 0x02 +#define UIP_EXT_HDR_BITMAP_ROUTING 0x04 +#define UIP_EXT_HDR_BITMAP_FRAG 0x08 +#define UIP_EXT_HDR_BITMAP_AH 0x10 +#define UIP_EXT_HDR_BITMAP_ESP 0x20 +#define UIP_EXT_HDR_BITMAP_DESTO2 0x40 + +/** @} */ +#endif /* UIP_CONF_IPV6 */ + +/* Header sizes. */ +#if UIP_CONF_IPV6 != 0 +#define UIP_IPH_LEN 40 +#define UIP_FRAGH_LEN 8 +#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 */ +#ifdef UIP_IPH_LEN +#define UIP_ICMPH_LEN 4 /* Size of ICMP header */ +#endif +#define UIP_IPUDPH_LEN ( UIP_UDPH_LEN + UIP_IPH_LEN ) /* Size of IP + + * UDP + * header */ +#define UIP_IPTCPH_LEN ( UIP_TCPH_LEN + UIP_IPH_LEN ) /* Size of IP + + * TCP + * header */ +#define UIP_TCPIP_HLEN UIP_IPTCPH_LEN +#define UIP_IPICMPH_LEN ( UIP_IPH_LEN + UIP_ICMPH_LEN ) /* size of ICMP + + IP header */ +#define UIP_LLIPH_LEN ( UIP_LLH_LEN + UIP_IPH_LEN ) /* size of L2 + + IP header */ +#if UIP_CONF_IPV6 != 0 + +/** + * The sums below are quite used in ND. When used for uip_buf, we + * include link layer length when used for uip_len, we do not, hence + * we need values with and without LLH_LEN we do not use capital + * letters as these values are variable + */ +#define uip_l2_l3_hdr_len ( UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len ) +#define uip_l2_l3_icmp_hdr_len ( UIP_LLH_LEN + UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN ) +#define uip_l3_hdr_len ( UIP_IPH_LEN + uip_ext_len ) +#define uip_l3_icmp_hdr_len ( UIP_IPH_LEN + uip_ext_len + UIP_ICMPH_LEN ) +#endif /*UIP_CONF_IPV6*/ + +#ifdef UIP_FIXEDADDR +CCIF extern const uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr; +#else /* UIP_FIXEDADDR */ +CCIF extern uip_ipaddr_t uip_hostaddr, uip_netmask, uip_draddr; +#endif /* UIP_FIXEDADDR */ +CCIF extern const uip_ipaddr_t uip_broadcast_addr; +CCIF extern const uip_ipaddr_t uip_all_zeroes_addr; + +#ifdef UIP_FIXEDETHADDR +CCIF extern const uip_lladdr_t uip_lladdr; +#else +CCIF extern uip_lladdr_t uip_lladdr; +#endif +#if UIP_CONF_IPV6 != 0 + +/** + * \brief Is IPv6 address a the unspecified address + * a is of type uip_ipaddr_t + */ +#define uip_is_addr_unspecified( a ) \ + ( \ + (((a)->u16[0]) == 0) && \ + (((a)->u16[1]) == 0) && \ + (((a)->u16[2]) == 0) && \ + (((a)->u16[3]) == 0) && \ + (((a)->u16[4]) == 0) && \ + (((a)->u16[5]) == 0) && \ + (((a)->u16[6]) == 0) && \ + (((a)->u16[7]) == 0) \ + ) + +/** \brief Is IPv6 address a the link local all-nodes multicast address */ +#define uip_is_addr_linklocal_allnodes_mcast( a ) \ + ( \ + (((a)->u8[0]) == 0xff) && \ + (((a)->u8[1]) == 0x02) && \ + (((a)->u16[1]) == 0) && \ + (((a)->u16[2]) == 0) && \ + (((a)->u16[3]) == 0) && \ + (((a)->u16[4]) == 0) && \ + (((a)->u16[5]) == 0) && \ + (((a)->u16[6]) == 0) && \ + (((a)->u8[14]) == 0) && \ + (((a)->u8[15]) == 0x01) \ + ) + +/** \brief set IP address a to unspecified */ +#define uip_create_unspecified( a ) uip_ip6addr( a, 0, 0, 0, 0, 0, 0, 0, 0 ) + +/** \brief set IP address a to the link local all-nodes multicast address */ +#define uip_create_linklocal_allnodes_mcast( a ) uip_ip6addr( a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0001 ) + +/** \brief set IP address a to the link local all-routers multicast address */ +#define uip_create_linklocal_allrouters_mcast( a ) uip_ip6addr( a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002 ) + +/** + * \brief is addr (a) a solicited node multicast address, see RFC3513 + * a is of type uip_ipaddr_t* + */ +#define uip_is_addr_solicited_node( a ) \ + ( \ + (((a)->u8[0]) == 0xFF) && \ + (((a)->u8[1]) == 0x02) && \ + (((a)->u16[1]) == 0) && \ + (((a)->u16[2]) == 0) && \ + (((a)->u16[3]) == 0) && \ + (((a)->u16[4]) == 0) && \ + (((a)->u16[5]) == 1) && \ + (((a)->u8[12]) == 0xFF) \ + ) + +/** + * \briefput in b the solicited node address corresponding to address a + * both a and b are of type uip_ipaddr_t* + * */ +#define uip_create_solicited_node( a, b ) \ + ( ((b)->u8[0]) = 0xFF ); \ + ( ((b)->u8[1]) = 0x02 ); \ + ( ((b)->u16[1]) = 0 ); \ + ( ((b)->u16[2]) = 0 ); \ + ( ((b)->u16[3]) = 0 ); \ + ( ((b)->u16[4]) = 0 ); \ + ( ((b)->u8[10]) = 0 ); \ + ( ((b)->u8[11]) = 0x01 ); \ + ( ((b)->u8[12]) = 0xFF ); \ + ( ((b)->u8[13]) = ((a)->u8[13]) ); \ + ( ((b)->u16[7]) = ((a)->u16[7]) ) + +/** + * \brief is addr (a) a link local unicast address, see RFC3513 + * i.e. is (a) on prefix FE80::/10 + * a is of type uip_ipaddr_t* + */ +#define uip_is_addr_link_local( a ) ( (((a)->u8[0]) == 0xFE) && (((a)->u8[1]) == 0x80) ) + +/** + * \brief was addr (a) forged based on the mac address m + * a type is uip_ipaddr_t + * m type is uiplladdr_t + */ +#ifdef UIP_CONF_LL_802154 +#define uip_is_addr_mac_addr_based( a, m ) \ + ( \ + (((a)->u8[8]) == (((m)->addr[0]) ^ 0x02)) && \ + (((a)->u8[9]) == (m)->addr[1]) && \ + (((a)->u8[10]) == (m)->addr[2]) && \ + (((a)->u8[11]) == (m)->addr[3]) && \ + (((a)->u8[12]) == (m)->addr[4]) && \ + (((a)->u8[13]) == (m)->addr[5]) && \ + (((a)->u8[14]) == (m)->addr[6]) && \ + (((a)->u8[15]) == (m)->addr[7]) \ + ) +#else +#define uip_is_addr_mac_addr_based( a, m ) \ + ( \ + (((a)->u8[8]) == (((m)->addr[0]) | 0x02)) && \ + (((a)->u8[9]) == (m)->addr[1]) && \ + (((a)->u8[10]) == (m)->addr[2]) && \ + (((a)->u8[11]) == 0xff) && \ + (((a)->u8[12]) == 0xfe) && \ + (((a)->u8[13]) == (m)->addr[3]) && \ + (((a)->u8[14]) == (m)->addr[4]) && \ + (((a)->u8[15]) == (m)->addr[5]) \ + ) +#endif /*UIP_CONF_LL_802154*/ + +/** + * \brief is address a multicast address, see RFC 3513 + * a is of type uip_ipaddr_t* + * */ +#define uip_is_addr_mcast( a ) ( ((a)->u8[0]) == 0xFF ) + +/** + * \brief is group-id of multicast address a + * the all nodes group-id + */ +#define uip_is_mcast_group_id_all_nodes( a ) \ + ( \ + (((a)->u16[1]) == 0) && \ + (((a)->u16[2]) == 0) && \ + (((a)->u16[3]) == 0) && \ + (((a)->u16[4]) == 0) && \ + (((a)->u16[5]) == 0) && \ + (((a)->u16[6]) == 0) && \ + (((a)->u8[14]) == 0) && \ + (((a)->u8[15]) == 1) \ + ) + +/** + * \brief is group-id of multicast address a + * the all routers group-id + */ +#define uip_is_mcast_group_id_all_routers( a ) \ + ( \ + (((a)->u16[1]) == 0) && \ + (((a)->u16[2]) == 0) && \ + (((a)->u16[3]) == 0) && \ + (((a)->u16[4]) == 0) && \ + (((a)->u16[5]) == 0) && \ + (((a)->u16[6]) == 0) && \ + (((a)->u8[14]) == 0) && \ + (((a)->u8[15]) == 2) \ + ) +#endif /*UIP_CONF_IPV6*/ + +/** + * Calculate the Internet checksum over a buffer. + * + * The Internet checksum is the one's complement of the one's + * complement sum of all 16-bit words in the buffer. + * + * See RFC1071. + * + * \param 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 ); + +/** + * Calculate the ICMP checksum of the packet in uip_buf. + * + * \return The ICMP checksum of the ICMP packet in uip_buf + */ +u16_t uip_icmp6chksum( void ); +#endif /* __UIP_H__ */ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/net/uip_arp.h b/Demo/Common/ethernet/FreeTCPIP/net/uip_arp.h new file mode 100644 index 000000000..6aec6ad7d --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/uip_arp.h @@ -0,0 +1,149 @@ +/** + * \addtogroup uip + * @{ + */ + +/** + * \addtogroup uiparp + * @{ + */ + +/** + * \file + * Macros and definitions for the ARP module. + * \author Adam Dunkels + */ + +/* + * 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 1.2 2006/08/26 23:58:45 oliverschmidt Exp $ + * + */ +#ifndef __UIP_ARP_H__ +#define __UIP_ARP_H__ + +#include "net/uip.h" + +CCIF extern struct uip_eth_addr uip_ethaddr; + +/** + * The Ethernet header. + */ +#include "net/pack_struct_start.h" +struct uip_eth_hdr +{ + struct uip_eth_addr dest; + struct uip_eth_addr src; + u16_t type; +} + +#include "net/pack_struct_end.h" + +#define UIP_ETHTYPE_ARP 0x0806 +#define UIP_ETHTYPE_IP 0x0800 +#define UIP_ETHTYPE_IPV6 0x86dd + +/* The uip_arp_init() function must be called before any of the other + ARP functions. */ +void uip_arp_init( void ); + +/* The uip_arp_ipin() function should be called whenever an IP packet + arrives from the Ethernet. This function refreshes the ARP table or + inserts a new mapping if none exists. The function assumes that an + IP packet with an Ethernet header is present in the uip_buf buffer + and that the length of the packet is in the uip_len variable. */ + +/*void uip_arp_ipin(void);*/ +#define uip_arp_ipin() + +/* The uip_arp_arpin() should be called when an ARP packet is received + by the Ethernet driver. This function also assumes that the + Ethernet frame is present in the uip_buf buffer. When the + uip_arp_arpin() function returns, the contents of the uip_buf + buffer should be sent out on the Ethernet if the uip_len variable + is > 0. */ +void uip_arp_arpin( void ); + +/* The uip_arp_out() function should be called when an IP packet + should be sent out on the Ethernet. This function creates an + Ethernet header before the IP header in the uip_buf buffer. The + Ethernet header will have the correct Ethernet MAC destination + address filled in if an ARP table entry for the destination IP + address (or the IP address of the default router) is present. If no + such table entry is found, the IP packet is overwritten with an ARP + request and we rely on TCP to retransmit the packet that was + overwritten. In any case, the uip_len variable holds the length of + the Ethernet frame that should be transmitted. */ +void uip_arp_out( void ); + +/* The uip_arp_timer() function should be called every ten seconds. It + is responsible for flushing old entries in the ARP table. */ +void uip_arp_timer( void ); + +/** @} */ + +/** + * \addtogroup uipconffunc + * @{ + */ + +/** + * Specifiy the Ethernet MAC address. + * + * The ARP code needs to know the MAC address of the Ethernet card in + * order to be able to respond to ARP queries and to generate working + * Ethernet headers. + * + * \note This macro only specifies the Ethernet MAC address to the ARP + * code. It cannot be used to change the MAC address of the Ethernet + * card. + * + * \param eaddr A pointer to a struct uip_eth_addr containing the + * Ethernet MAC address of the Ethernet card. + * + * \hideinitializer + */ +#define uip_setethaddr( eaddr ) \ + do \ + { \ + uip_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__ */ + + /** @} */ + \ No newline at end of file diff --git a/Demo/Common/ethernet/FreeTCPIP/net/uipopt.h b/Demo/Common/ethernet/FreeTCPIP/net/uipopt.h new file mode 100644 index 000000000..ddf6a245a --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/net/uipopt.h @@ -0,0 +1,695 @@ +/** + * \addtogroup uip + * @{ + */ + +/** + * \defgroup uipopt Configuration options for uIP + * @{ + * + * uIP is configured using the per-project configuration file + * "uipopt.h". This file contains all compile-time options for uIP and + * should be tweaked to match each specific project. The uIP + * distribution contains a documented example "uipopt.h" that can be + * copied and modified for each project. + * + * \note Contiki does not use the uipopt.h file to configure uIP, but + * uses a per-port uip-conf.h file that should be edited instead. + */ + +/** + * \file + * Configuration options for uIP. + * \author Adam Dunkels + * + * 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 1.11 2009/04/10 00:37:48 adamdunkels 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" +//_RB_#include "contiki-conf.h" + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptstaticconf Static configuration options + * @{ + * + * These configuration options can be used for setting the IP address + * settings statically, but only if UIP_FIXEDADDR is set to 1. The + * configuration options for a specific node includes IP address, + * netmask and default router as well as the Ethernet address. The + * netmask, default router and Ethernet address are applicable only + * if uIP should be run over Ethernet. + * + * This options are meaningful only for the IPv4 code. + * + * All of these should be changed to suit your project. + */ + +/** + * Determines if uIP should use a fixed IP address or not. + * + * If uIP should use a fixed IP address, the settings are set in the + * uipopt.h file. If not, the macros uip_sethostaddr(), + * uip_setdraddr() and uip_setnetmask() should be used instead. + * + * \hideinitializer + */ +#ifdef UIP_CONF_FIXEDADDR +#define UIP_FIXED_ADDR UIP_CONF_FIXEDADDR +#define UIP_FIXEDADDR 1 +#endif + +/** + * Ping IP address assignment. + * + * uIP uses a "ping" packets for setting its own IP address if this + * option is set. If so, uIP will start with an empty IP address and + * the destination IP address of the first incoming "ping" (ICMP echo) + * packet will be used for setting the hosts IP address. + * + * \note This works only if UIP_FIXEDADDR is 0. + * + * \hideinitializer + */ +#ifdef UIP_CONF_PINGADDRCONF +#define UIP_PINGADDRCONF UIP_CONF_PINGADDRCONF +#else /* UIP_CONF_PINGADDRCONF */ +#define UIP_PINGADDRCONF 0 +#endif /* UIP_CONF_PINGADDRCONF */ + +/** + * Specifies if the uIP ARP module should be compiled with a fixed + * Ethernet MAC address or not. + * + * If this configuration option is 0, the macro uip_setethaddr() can + * be used to specify the Ethernet address at run-time. + * + * \hideinitializer + */ +#define UIP_FIXEDETHADDR 0 + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptip IP configuration options + * @{ + * + */ + +/** + * The IP TTL (time to live) of IP packets sent by uIP. + * + * This should normally not be changed. + */ +#define UIP_TTL 64 + +/** + * The maximum time an IP fragment should wait in the reassembly + * buffer before it is dropped. + * + */ +#define UIP_REASS_MAXAGE 60 /*60s*/ + +/** + * Turn on support for IP packet reassembly. + * + * uIP supports reassembly of fragmented IP packets. This features + * requires an additional amount of RAM to hold the reassembly buffer + * and the reassembly code size is approximately 700 bytes. The + * reassembly buffer is of the same size as the uip_buf buffer + * (configured by UIP_BUFSIZE). + * + * \note IP packet reassembly is not heavily tested. + * + * \hideinitializer + */ +#ifdef UIP_CONF_REASSEMBLY +#define UIP_REASSEMBLY UIP_CONF_REASSEMBLY +#else /* UIP_CONF_REASSEMBLY */ +#define UIP_REASSEMBLY 0 +#endif /* UIP_CONF_REASSEMBLY */ + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptipv6 IPv6 configuration options + * @{ + * + */ + +/** The maximum transmission unit at the IP Layer*/ +#define UIP_LINK_MTU 1280 + +#ifndef UIP_CONF_IPV6 + +/** Do we use IPv6 or not (default: no) */ +#define UIP_CONF_IPV6 0 +#endif +#ifndef UIP_CONF_IPV6_QUEUE_PKT + +/** Do we do per %neighbor queuing during address resolution (default: no) */ +#define UIP_CONF_IPV6_QUEUE_PKT 0 +#endif +#ifndef UIP_CONF_IPV6_CHECKS + +/** Do we do IPv6 consistency checks (highly recommended, default: yes) */ +#define UIP_CONF_IPV6_CHECKS 1 +#endif +#ifndef UIP_CONF_IPV6_REASSEMBLY + +/** Do we do IPv6 fragmentation (default: no) */ +#define UIP_CONF_IPV6_REASSEMBLY 0 +#endif +#ifndef UIP_CONF_NETIF_MAX_ADDRESSES + +/** Default number of IPv6 addresses associated to the node's interface */ +#define UIP_CONF_NETIF_MAX_ADDRESSES 3 +#endif +#ifndef UIP_CONF_ND6_MAX_PREFIXES + +/** Default number of IPv6 prefixes associated to the node's interface */ +#define UIP_CONF_ND6_MAX_PREFIXES 3 +#endif +#ifndef UIP_CONF_ND6_MAX_NEIGHBORS + +/** Default number of neighbors that can be stored in the %neighbor cache */ +#define UIP_CONF_ND6_MAX_NEIGHBORS 4 +#endif +#ifndef UIP_CONF_ND6_MAX_DEFROUTERS + +/** Minimum number of default routers */ +#define UIP_CONF_ND6_MAX_DEFROUTERS 2 +#endif + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptudp UDP configuration options + * @{ + * + * \note The UDP support in uIP is still not entirely complete; there + * is no support for sending or receiving broadcast or multicast + * packets, but it works well enough to support a number of vital + * applications such as DNS queries, though + */ + +/** + * Toggles whether UDP support should be compiled in or not. + * + * \hideinitializer + */ +#ifdef UIP_CONF_UDP +#define UIP_UDP UIP_CONF_UDP +#else /* UIP_CONF_UDP */ +#define UIP_UDP 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 + */ + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipopttcp TCP configuration options + * @{ + */ + +/** + * Toggles whether UDP support should be compiled in or not. + * + * \hideinitializer + */ +#ifdef UIP_CONF_TCP +#define UIP_TCP UIP_CONF_TCP +#else /* UIP_CONF_UDP */ +#define UIP_TCP 1 +#endif /* UIP_CONF_UDP */ + +/** + * Determines if support for opening connections from uIP should be + * compiled in. + * + * If the applications that are running on top of uIP for this project + * do not need to open outgoing TCP connections, this configuration + * option can be turned off to reduce the code size of uIP. + * + * \hideinitializer + */ +#ifndef UIP_CONF_ACTIVE_OPEN +#define UIP_ACTIVE_OPEN 1 +#else /* UIP_CONF_ACTIVE_OPEN */ +#define UIP_ACTIVE_OPEN UIP_CONF_ACTIVE_OPEN +#endif /* UIP_CONF_ACTIVE_OPEN */ + +/** + * The maximum number of simultaneously open TCP connections. + * + * Since the TCP connections are statically allocated, turning this + * configuration knob down results in less RAM used. Each TCP + * connection requires approximately 30 bytes of memory. + * + * \hideinitializer + */ +#ifndef UIP_CONF_MAX_CONNECTIONS +#define UIP_CONNS 10 +#else /* UIP_CONF_MAX_CONNECTIONS */ +#define UIP_CONNS UIP_CONF_MAX_CONNECTIONS +#endif /* UIP_CONF_MAX_CONNECTIONS */ + +/** + * The maximum number of simultaneously listening TCP ports. + * + * Each listening TCP port requires 2 bytes of memory. + * + * \hideinitializer + */ +#ifndef UIP_CONF_MAX_LISTENPORTS +#define UIP_LISTENPORTS 20 +#else /* UIP_CONF_MAX_LISTENPORTS */ +#define UIP_LISTENPORTS UIP_CONF_MAX_LISTENPORTS +#endif /* UIP_CONF_MAX_LISTENPORTS */ + +/** + * Determines if support for TCP urgent data notification should be + * compiled in. + * + * Urgent data (out-of-band data) is a rarely used TCP feature that + * very seldom would be required. + * + * \hideinitializer + */ +#define UIP_URGDATA 0 + +/** + * The initial retransmission timeout counted in timer pulses. + * + * This should not be changed. + */ +#define UIP_RTO 3 + +/** + * The maximum number of times a segment should be retransmitted + * before the connection should be aborted. + * + * This should not be changed. + */ +#define UIP_MAXRTX 8 + +/** + * The maximum number of times a SYN segment should be retransmitted + * before a connection request should be deemed to have been + * unsuccessful. + * + * This should not need to be changed. + */ +#define UIP_MAXSYNRTX 5 + +/** + * The TCP maximum segment size. + * + * This is should not be to set to more than + * UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN. + */ +#ifdef UIP_CONF_TCP_MSS +#define UIP_TCP_MSS UIP_CONF_TCP_MSS +#else +#define UIP_TCP_MSS ( UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN ) +#endif + +/** + * The size of the advertised receiver's window. + * + * Should be set low (i.e., to the size of the uip_buf buffer) if the + * application is slow to process incoming data, or high (32768 bytes) + * if the application processes data quickly. + * + * \hideinitializer + */ +#ifndef UIP_CONF_RECEIVE_WINDOW +#define UIP_RECEIVE_WINDOW UIP_TCP_MSS +#else +#define UIP_RECEIVE_WINDOW UIP_CONF_RECEIVE_WINDOW +#endif + +/** + * How long a connection should stay in the TIME_WAIT state. + * + * This configuration option has no real implication, and it should be + * left untouched. + */ +#define UIP_TIME_WAIT_TIMEOUT 120 + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptarp ARP configuration options + * @{ + */ + +/** + * The size of the ARP table. + * + * This option should be set to a larger value if this uIP node will + * have many connections from the local network. + * + * \hideinitializer + */ +#ifdef UIP_CONF_ARPTAB_SIZE +#define UIP_ARPTAB_SIZE UIP_CONF_ARPTAB_SIZE +#else +#define UIP_ARPTAB_SIZE 8 +#endif + +/** + * The maximum age of ARP table entries measured in 10ths of seconds. + * + * An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD + * default). + */ +#define UIP_ARP_MAXAGE 120 + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptmac layer 2 options (for ipv6) + * @{ + */ +#define UIP_DEFAULT_PREFIX_LEN 64 + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptsics 6lowpan options (for ipv6) + * @{ + */ + +/** + * Timeout for packet reassembly at the 6lowpan layer + * (should be < 60s) + */ +#ifdef SICSLOWPAN_CONF_MAXAGE +#define SICSLOWPAN_REASS_MAXAGE SICSLOWPAN_CONF_MAXAGE +#else +#define SICSLOWPAN_REASS_MAXAGE 20 +#endif + +/** + * Do we compress the IP header or not (default: no) + */ +#ifndef SICSLOWPAN_CONF_COMPRESSION +#define SICSLOWPAN_CONF_COMPRESSION 0 +#endif + +/** + * If we use IPHC compression, how many address contexts do we support + */ +#ifndef SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS +#define SICSLOWPAN_CONF_MAX_ADDR_CONTEXTS 1 +#endif + +/** + * Do we support 6lowpan fragmentation + */ +#ifndef SICSLOWPAN_CONF_FRAG +#define SICSLOWPAN_CONF_FRAG 0 +#endif + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptgeneral General configuration options + * @{ + */ + +/** + * The size of the uIP packet buffer. + * + * The uIP packet buffer should not be smaller than 60 bytes, and does + * not need to be larger than 1514 bytes. Lower size results in lower + * TCP throughput, larger size results in higher TCP throughput. + * + * \hideinitializer + */ +#ifndef UIP_CONF_BUFFER_SIZE +#define UIP_BUFSIZE UIP_LINK_MTU + UIP_LLH_LEN +#else /* UIP_CONF_BUFFER_SIZE */ +#define UIP_BUFSIZE UIP_CONF_BUFFER_SIZE +#endif /* UIP_CONF_BUFFER_SIZE */ + +/** + * Determines if statistics support should be compiled in. + * + * The statistics is useful for debugging and to show the user. + * + * \hideinitializer + */ +#ifndef UIP_CONF_STATISTICS +#define UIP_STATISTICS 0 +#else /* UIP_CONF_STATISTICS */ +#define UIP_STATISTICS UIP_CONF_STATISTICS +#endif /* UIP_CONF_STATISTICS */ + +/** + * Determines if logging of certain events should be compiled in. + * + * This is useful mostly for debugging. The function uip_log() + * must be implemented to suit the architecture of the project, if + * logging is turned on. + * + * \hideinitializer + */ +#ifndef UIP_CONF_LOGGING +#define UIP_LOGGING 0 +#else /* UIP_CONF_LOGGING */ +#define UIP_LOGGING UIP_CONF_LOGGING +#endif /* UIP_CONF_LOGGING */ + +/** + * Broadcast support. + * + * This flag configures IP broadcast support. This is useful only + * together with UDP. + * + * \hideinitializer + * + */ +#ifndef UIP_CONF_BROADCAST +#define UIP_BROADCAST 0 +#else /* UIP_CONF_BROADCAST */ +#define UIP_BROADCAST UIP_CONF_BROADCAST +#endif /* UIP_CONF_BROADCAST */ + +/** + * Print out a uIP log message. + * + * This function must be implemented by the module that uses uIP, and + * is called by uIP whenever a log message is generated. + */ +void uip_log( char *msg ); + +/** + * The link level header length. + * + * This is the offset into the uip_buf where the IP header can be + * found. For Ethernet, this should be set to 14. For SLIP, this + * should be set to 0. + * + * \note we probably won't use this constant for other link layers than + * ethernet as they have variable header length (this is due to variable + * number and type of address fields and to optional security features) + * E.g.: 802.15.4 -> 2 + (1/2*4/8) + 0/5/6/10/14 + * 802.11 -> 4 + (6*3/4) + 2 + * \hideinitializer + */ +#ifdef UIP_CONF_LLH_LEN +#define UIP_LLH_LEN UIP_CONF_LLH_LEN +#else /* UIP_LLH_LEN */ +#define UIP_LLH_LEN 14 +#endif /* UIP_CONF_LLH_LEN */ + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptcpu CPU architecture configuration + * @{ + * + * The CPU architecture configuration is where the endianess of the + * CPU on which uIP is to be run is specified. Most CPUs today are + * little endian, and the most notable exception are the Motorolas + * which are big endian. The BYTE_ORDER macro should be changed to + * reflect the CPU architecture on which uIP is to be run. + */ + +/** + * The byte order of the CPU architecture on which uIP is to be run. + * + * This option can be either UIP_BIG_ENDIAN (Motorola byte order) or + * UIP_LITTLE_ENDIAN (Intel byte order). + * + * \hideinitializer + */ +#ifdef UIP_CONF_BYTE_ORDER +#define UIP_BYTE_ORDER UIP_CONF_BYTE_ORDER +#else /* UIP_CONF_BYTE_ORDER */ +#define UIP_BYTE_ORDER UIP_LITTLE_ENDIAN +#endif /* UIP_CONF_BYTE_ORDER */ + +/** @} */ + +/*------------------------------------------------------------------------------*/ + +/** + * \defgroup uipoptapp Application specific configurations + * @{ + * + * An uIP application is implemented using a single application + * function that is called by uIP whenever a TCP/IP event occurs. The + * name of this function must be registered with uIP at compile time + * using the UIP_APPCALL definition. + * + * uIP applications can store the application state within the + * uip_conn structure by specifying the type of the application + * structure by typedef:ing the type uip_tcp_appstate_t and uip_udp_appstate_t. + * + * The file containing the definitions must be included in the + * uipopt.h file. + * + * The following example illustrates how this can look. + \code + + void httpd_appcall(void); + #define UIP_APPCALL httpd_appcall + + struct httpd_state { + 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__ */ + +/** @} */ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/psock.c b/Demo/Common/ethernet/FreeTCPIP/psock.c new file mode 100644 index 000000000..655253391 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/psock.c @@ -0,0 +1,338 @@ +/* + * 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 + * + * $Id: psock.c,v 1.2 2006/06/12 08:00:30 adam Exp $ + */ + +#include +#include + +#include "net/uipopt.h" +#include "net/psock.h" +#include "net/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 = (unsigned char*)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, (unsigned char*)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, (unsigned char * ) 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_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, (unsigned char*) buffer, buffersize); + PT_INIT(&psock->pt); + PT_INIT(&psock->psockpt); +} +/*---------------------------------------------------------------------------*/ diff --git a/Demo/Common/ethernet/FreeTCPIP/sys/clock.h b/Demo/Common/ethernet/FreeTCPIP/sys/clock.h new file mode 100644 index 000000000..9f9358368 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/sys/clock.h @@ -0,0 +1,115 @@ +/** \addtogroup sys + * @{ + */ + +/** + * \defgroup clock Clock library + * + * The clock library is the interface between Contiki and the platform + * specific clock functionality. The clock library performs a single + * function: measuring time. Additionally, the clock library provides + * a macro, CLOCK_SECOND, which corresponds to one second of system + * time. + * + * \note The clock library need in many cases not be used + * directly. Rather, the \ref timer "timer library" or the \ref etimer + * "event timers" should be used. + * + * \sa \ref timer "Timer library" + * \sa \ref etimer "Event timers" + * + * @{ + */ + +/* + * 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 Contiki operating system. + * + * Author: Adam Dunkels + * + * $Id: clock.h,v 1.11 2009/01/24 15:20:11 adamdunkels Exp $ + */ +#ifndef __CLOCK_H__ +#define __CLOCK_H__ + +#include "net/clock-arch.h" + +//_RB_#include "contiki-conf.h" +#if 0 /* XXX problems with signedness and use in timer_expired(). #if:ed it out for now. */ + +/** + * Check if a clock time value is less than another clock time value. + * + * This macro checks if a clock time value is less than another clock + * time value. This macro is needed to correctly handle wrap-around of + * clock time values. + * + */ +#define CLOCK_LT( a, b ) ( (clock_time_t) ((a) - (b)) < ((clock_time_t) (~((clock_time_t) 0)) >> 1) ) +#endif /* 0 */ + +/** + * 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. + */ +CCIF clock_time_t clock_time( void ); + +void clock_delay( unsigned int ); + +/** + * 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 +int clock_fine_max( void ); +unsigned short clock_fine( void ); + +CCIF unsigned long clock_seconds( void ); +#endif /* __CLOCK_H__ */ + +/** @} */ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/sys/pt.h b/Demo/Common/ethernet/FreeTCPIP/sys/pt.h new file mode 100644 index 000000000..b0b9408c9 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/sys/pt.h @@ -0,0 +1,335 @@ +/* + * 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 Contiki operating system. + * + * Author: Adam Dunkels + * + * $Id: pt.h,v 1.3 2008/10/14 12:46:39 nvt-se Exp $ + */ + +/** + * \addtogroup pt + * @{ + */ + +/** + * \file + * Protothreads implementation. + * \author + * Adam Dunkels + * + */ +#ifndef __PT_H__ +#define __PT_H__ + +#include "sys/lc.h" + +struct pt +{ + lc_t lc; +}; + +#define PT_WAITING 0 +#define PT_YIELDED 1 +#define PT_EXITED 2 +#define PT_ENDED 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 schedules 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_EXITED ) + /** @} */ + + /** + * \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__ */ + + /** @} */ + \ No newline at end of file diff --git a/Demo/Common/ethernet/FreeTCPIP/sys/timer.h b/Demo/Common/ethernet/FreeTCPIP/sys/timer.h new file mode 100644 index 000000000..1d87e7efd --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/sys/timer.h @@ -0,0 +1,101 @@ +/** \addtogroup sys + * @{ */ + +/** + * \defgroup timer Timer library + * + * The Contiki kernel does not provide support for timed + * events. Rather, an application that wants to use timers needs to + * explicitly use the 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 is not able to post events when a timer + * expires. The \ref etimer "Event timers" should be used for this + * purpose. + * + * \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. + * + * \sa \ref etimer "Event timers" + * + * @{ + */ + +/** + * \file + * Timer library header file. + * \author + * Adam Dunkels + */ + +/* + * 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 Contiki operating system. + * + * Author: Adam Dunkels + * + * $Id: timer.h,v 1.2 2008/09/21 08:58:05 adamdunkels Exp $ + */ +#ifndef __TIMER_H__ +#define __TIMER_H__ + +#include "sys/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 ); +clock_time_t timer_remaining( struct timer *t ); +#endif /* __TIMER_H__ */ + +/** @} */ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/timer.c b/Demo/Common/ethernet/FreeTCPIP/timer.c new file mode 100644 index 000000000..e520391d6 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/timer.c @@ -0,0 +1,151 @@ +/** + * \addtogroup timer + * @{ + */ + +/** + * \file + * Timer library implementation. + * \author + * Adam Dunkels + */ + +/* + * 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 Contiki operating system. + * + * Author: Adam Dunkels + * + * $Id: timer.c,v 1.5 2009/01/24 15:20:11 adamdunkels Exp $ + */ + +//_RB_#include "contiki-conf.h" +#include "uip-conf.h" +#include "net/clock-arch.h" +#include "sys/clock.h" +#include "sys/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_restart() 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; +} + +/*---------------------------------------------------------------------------*/ + +/** + * The time until the timer expires + * + * This function returns the time until the timer expires. + * + * \param t A pointer to the timer + * + * \return The time until the timer expires + * + */ +clock_time_t timer_remaining( struct timer *t ) +{ + return t->start + t->interval - clock_time(); +} + +/*---------------------------------------------------------------------------*/ + +/** @} */ diff --git a/Demo/Common/ethernet/FreeTCPIP/uip.c b/Demo/Common/ethernet/FreeTCPIP/uip.c new file mode 100644 index 000000000..3c6d72c30 --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/uip.c @@ -0,0 +1,2162 @@ +//#define DEBUG_PRINTF( ... ) /*printf(__VA_ARGS__)*/ + +/** + * \addtogroup uip + * @{ + */ + +/** + * \file + * The uIP TCP/IP stack code. + * \author Adam Dunkels + */ + +/* + * 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 1.15 2008/10/15 08:08:32 adamdunkels 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 "net/uip.h" +#include "net/uipopt.h" +#include "net/uip_arp.h" +#include "net/uip_arch.h" + +#if !UIP_CONF_IPV6 /* If UIP_CONF_IPV6 is defined, we compile the + uip6.c file instead of this one. Therefore + this #ifndef removes the entire compilation + output of the uip.c file */ + +#if UIP_CONF_IPV6 +#include "net/uip-neighbor.h" +#endif /* UIP_CONF_IPV6 */ + +#include + +/*---------------------------------------------------------------------------*/ + +/* Variable definitions. */ + +/* The IP address of this host. If it is defined to be fixed (by + setting UIP_FIXEDADDR to 1 in uipopt.h), the address is set + here. Otherwise, the address */ +#if UIP_FIXEDADDR > 0 +const uip_ipaddr_t uip_hostaddr = { UIP_IPADDR0, UIP_IPADDR1, UIP_IPADDR2, UIP_IPADDR3 }; +const uip_ipaddr_t uip_draddr = { UIP_DRIPADDR0, UIP_DRIPADDR1, UIP_DRIPADDR2, UIP_DRIPADDR3 }; +const uip_ipaddr_t uip_netmask = { UIP_NETMASK0, UIP_NETMASK1, UIP_NETMASK2, UIP_NETMASK3 }; +#else +uip_ipaddr_t uip_hostaddr, uip_draddr, uip_netmask; +#endif /* UIP_FIXEDADDR */ + +const uip_ipaddr_t uip_broadcast_addr = +#if UIP_CONF_IPV6 +{ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } }; +#else /* UIP_CONF_IPV6 */ +{ + { + 0xff, 0xff, 0xff, 0xff + } +}; +#endif /* UIP_CONF_IPV6 */ +const uip_ipaddr_t uip_all_zeroes_addr = { { 0x0, /* rest is 0 */ } }; + +#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 +u8_t uip_buf[UIP_BUFSIZE + 2]; /* The packet buffer that contains + incoming packets. */ +#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 ICMP_DEST_UNREACHABLE 3 +#define ICMP_PORT_UNREACHABLE 3 + +#define ICMP6_ECHO_REPLY 129 +#define ICMP6_ECHO 128 +#define ICMP6_NEIGHBOR_SOLICITATION 135 +#define ICMP6_NEIGHBOR_ADVERTISEMENT 136 + +#define ICMP6_FLAG_S ( 1 << 6 ) +#define ICMP6_OPTION_SOURCE_LINK_ADDRESS 1 +#define ICMP6_OPTION_TARGET_LINK_ADDRESS 2 + +/* Macros. */ +#define BUF ( ( struct uip_tcpip_hdr * ) &uip_buf[UIP_LLH_LEN] ) +#define FBUF ( ( struct uip_tcpip_hdr * ) &uip_reassbuf[0] ) +#define ICMPBUF ( ( struct uip_icmpip_hdr * ) &uip_buf[UIP_LLH_LEN] ) +#define UDPBUF ( ( struct uip_udpip_hdr * ) &uip_buf[UIP_LLH_LEN] ) +#if UIP_STATISTICS == 1 +struct uip_stats uip_stat; +#define UIP_STAT( s ) s +#else +#define UIP_STAT( s ) +#endif /* UIP_STATISTICS == 1 */ + +#if UIP_LOGGING == 1 +#include +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, 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( const 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) ) + { + 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, &uip_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, &uip_broadcast_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.u16[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_ipaddr_cmp(&uip_hostaddr, &uip_all_zeroes_addr) ) + { + uip_hostaddr = BUF->destipaddr; + } + +#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 ); + BUF->ttl = UIP_TTL; + goto ip_send_nolen; + + /* 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, &uip_all_zeroes_addr) || + uip_ipaddr_cmp(&uip_udp_conn->ripaddr, &uip_broadcast_addr) || + uip_ipaddr_cmp(&BUF->srcipaddr, &uip_udp_conn->ripaddr) + ) + ) + { + goto udp_found; + } + } + + UIP_LOG( "udp: no matching connection found" ); +#if UIP_CONF_ICMP_DEST_UNREACH && !UIP_CONF_IPV6 + /* Copy fields from packet header into payload of this ICMP packet. */ + memcpy( &(ICMPBUF->payload[0]), ICMPBUF, UIP_IPH_LEN + 8 ); + + /* Set the ICMP type and code. */ + ICMPBUF->type = ICMP_DEST_UNREACHABLE; + ICMPBUF->icode = ICMP_PORT_UNREACHABLE; + + /* Calculate the ICMP checksum. */ + ICMPBUF->icmpchksum = 0; + ICMPBUF->icmpchksum = ~uip_chksum( ( u16_t * ) &(ICMPBUF->type), 36 ); + + /* Set the IP destination address to be the source address of the + original packet. */ + uip_ipaddr_copy( &BUF->destipaddr, &BUF->srcipaddr ); + + /* Set our IP address as the source address. */ + uip_ipaddr_copy( &BUF->srcipaddr, &uip_hostaddr ); + + /* The size of the ICMP destination unreachable packet is 36 + the + size of the IP header (20) = 56. */ + uip_len = 36 + UIP_IPH_LEN; + ICMPBUF->len[0] = 0; + ICMPBUF->len[1] = ( u8_t ) uip_len; + ICMPBUF->ttl = UIP_TTL; + ICMPBUF->proto = UIP_PROTO_ICMP; + + goto ip_send_nolen; +#else /* UIP_CONF_ICMP_DEST_UNREACH */ + goto drop; +#endif /* UIP_CONF_ICMP_DEST_UNREACH */ + + udp_found : uip_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 */ + + 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; + } + + /* Calculate the length of the data, if the application has sent + any data to us. */ + c = ( BUF->tcpoffset >> 4 ) << 2; + + /* uip_len will contain the length of the actual TCP data. This is + calculated by subtracing the length of the TCP header (in + c) and the length of the IP header (20 bytes). */ + uip_len = uip_len - c - UIP_IPH_LEN; + + /* First, check if the sequence number of the incoming packet is + what we're expecting next. If not, we send out an ACK with the + correct numbers in. */ + 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 || tmp16 == 0 ) + { + tmp16 = uip_connr->initialmss; + } + + uip_connr->mss = tmp16; + + /* If this packet constitutes an ACK for outstanding data (flagged + by the UIP_ACKDATA flag, we should call the application since it + might want to send more data. If the incoming packet had data + from the peer (as flagged by the UIP_NEWDATA flag), the + application must also be notified. + + When the application is called, the global variable uip_len + contains the length of the incoming data. The application can + access the incoming data through the global pointer + uip_appdata, which usually points UIP_IPTCPH_LEN + UIP_LLH_LEN + bytes into the uip_buf array. + + If the application wishes to send any data, this data should be + put into the uip_appdata and the length of the data should be + put into uip_len. If the application don't have any data to + send, uip_len must be set to 0. */ + if( uip_flags & (UIP_NEWDATA | UIP_ACKDATA) ) + { + uip_slen = 0; + UIP_APPCALL(); + + appsend: + if( uip_flags & UIP_ABORT ) + { + uip_slen = 0; + uip_connr->tcpstateflags = UIP_CLOSED; + BUF->flags = TCP_RST | TCP_ACK; + goto tcp_send_nodata; + } + + if( uip_flags & UIP_CLOSE ) + { + uip_slen = 0; + uip_connr->len = 1; + uip_connr->tcpstateflags = UIP_FIN_WAIT_1; + uip_connr->nrtx = 0; + BUF->flags = TCP_FIN | TCP_ACK; + goto tcp_send_nodata; + } + + /* If uip_slen > 0, the application has data to be sent. */ + if( uip_slen > 0 ) + { + /* If the connection has acknowledged data, the contents of + the ->len variable should be discarded. */ + if( (uip_flags & UIP_ACKDATA) != 0 ) + { + uip_connr->len = 0; + } + + /* If the ->len variable is non-zero the connection has + already data in transit and cannot send anymore right + now. */ + if( uip_connr->len == 0 ) + { + /* The application cannot send more than what is allowed by + the mss (the minumum of the MSS and the available + window). */ + if( uip_slen > uip_connr->mss ) + { + uip_slen = uip_connr->mss; + } + + /* Remember how much data we send out now so that we know + when everything has been acknowledged. */ + uip_connr->len = uip_slen; + } + else + { + /* If the application already had unacknowledged data, we + make sure that the application does not send (i.e., + retransmit) out more than it previously sent out. */ + uip_slen = uip_connr->len; + } + } + + uip_connr->nrtx = 0; + apprexmit: + uip_appdata = uip_sappdata; + + /* If the application has data to be sent, or if the incoming + packet had new data in it, we must send out a packet. */ + if( uip_slen > 0 && uip_connr->len > 0 ) + { + /* Add the length of the IP and TCP headers. */ + uip_len = uip_connr->len + UIP_TCPIP_HLEN; + + /* We always set the ACK flag in response packets. */ + BUF->flags = TCP_ACK | TCP_PSH; + + /* Send the packet. */ + goto tcp_send_noopts; + } + + /* If there is no data to send, just send out a pure ACK if + there is newdata. */ + if( uip_flags & UIP_NEWDATA ) + { + uip_len = UIP_TCPIP_HLEN; + BUF->flags = TCP_ACK; + goto tcp_send_noopts; + } + } + + goto drop; + + case UIP_LAST_ACK: + /* We can close this connection if the peer has acknowledged our + FIN. This is indicated by the UIP_ACKDATA flag. */ + if( uip_flags & UIP_ACKDATA ) + { + uip_connr->tcpstateflags = UIP_CLOSED; + uip_flags = UIP_CLOSE; + UIP_APPCALL(); + } + + break; + + case UIP_FIN_WAIT_1: + /* The application has closed the connection, but the remote host + hasn't closed its end yet. Thus we do nothing but wait for a + FIN from the other side. */ + if( uip_len > 0 ) + { + uip_add_rcv_nxt( uip_len ); + } + + if( BUF->flags & TCP_FIN ) + { + if( uip_flags & UIP_ACKDATA ) + { + uip_connr->tcpstateflags = UIP_TIME_WAIT; + uip_connr->timer = 0; + uip_connr->len = 0; + } + else + { + uip_connr->tcpstateflags = UIP_CLOSING; + } + + uip_add_rcv_nxt( 1 ); + uip_flags = UIP_CLOSE; + UIP_APPCALL(); + goto tcp_send_ack; + } + else if( uip_flags & UIP_ACKDATA ) + { + uip_connr->tcpstateflags = UIP_FIN_WAIT_2; + uip_connr->len = 0; + goto drop; + } + + if( uip_len > 0 ) + { + goto tcp_send_ack; + } + + goto drop; + + case UIP_FIN_WAIT_2: + if( uip_len > 0 ) + { + uip_add_rcv_nxt( uip_len ); + } + + if( BUF->flags & TCP_FIN ) + { + uip_connr->tcpstateflags = UIP_TIME_WAIT; + uip_connr->timer = 0; + uip_add_rcv_nxt( 1 ); + uip_flags = UIP_CLOSE; + UIP_APPCALL(); + goto tcp_send_ack; + } + + if( uip_len > 0 ) + { + goto tcp_send_ack; + } + + goto drop; + + case UIP_TIME_WAIT: + goto tcp_send_ack; + + case UIP_CLOSING: + if( uip_flags & UIP_ACKDATA ) + { + uip_connr->tcpstateflags = UIP_TIME_WAIT; + uip_connr->timer = 0; + } + } + + goto drop; + + /* We jump here when we are ready to send the packet, and just want + to set the appropriate TCP sequence numbers in the TCP header. */ +tcp_send_ack: + BUF->flags = TCP_ACK; + +tcp_send_nodata: + uip_len = UIP_IPTCPH_LEN; + +tcp_send_noopts: + BUF->tcpoffset = ( UIP_TCPH_LEN / 4 ) << 4; + + /* We're done with the input processing. We are now ready to send a + reply. Our job is to fill in all the fields of the TCP and IP + headers before calculating the checksum and finally send the + packet. */ +tcp_send: + BUF->ackno[0] = uip_connr->rcv_nxt[0]; + BUF->ackno[1] = uip_connr->rcv_nxt[1]; + BUF->ackno[2] = uip_connr->rcv_nxt[2]; + BUF->ackno[3] = uip_connr->rcv_nxt[3]; + + BUF->seqno[0] = uip_connr->snd_nxt[0]; + BUF->seqno[1] = uip_connr->snd_nxt[1]; + BUF->seqno[2] = uip_connr->snd_nxt[2]; + BUF->seqno[3] = uip_connr->snd_nxt[3]; + + BUF->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() ); + +ip_send_nolen: +#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 ); +#if UIP_CONF_IPV6 + send : +#endif /* UIP_CONF_IPV6 */ + + //DEBUG_PRINTF( "Sending packet with length %d (%d)\n", uip_len, (BUF->len[0] << 8) | BUF->len[1] ); + UIP_STAT( ++uip_stat.ip.sent ); + + /* Return and let the caller do the actual transmission. */ + uip_flags = 0; + return; + +drop: + uip_len = 0; + uip_flags = 0; + return; +} + +/*---------------------------------------------------------------------------*/ +u16_t htons( u16_t val ) +{ + return HTONS( val ); +} + +u32_t htonl( u32_t val ) +{ + return HTONL( val ); +} + +/*---------------------------------------------------------------------------*/ +void uip_send( const void *data, int len ) +{ + int copylen; +#define MIN( a, b ) ( (a) < (b) ? (a) : (b) ) + copylen = MIN( len, UIP_BUFSIZE - UIP_LLH_LEN - UIP_TCPIP_HLEN - ( int ) + (( char * ) uip_sappdata - ( char * ) &uip_buf[UIP_LLH_LEN + UIP_TCPIP_HLEN]) ); + if( copylen > 0 ) + { + uip_slen = copylen; + if( data != uip_sappdata ) + { + memcpy( uip_sappdata, (data), uip_slen ); + } + } +} + +/*---------------------------------------------------------------------------*/ + +/** @} */ +#endif /* UIP_CONF_IPV6 */ diff --git a/Demo/Common/ethernet/FreeTCPIP/uip_arp.c b/Demo/Common/ethernet/FreeTCPIP/uip_arp.c new file mode 100644 index 000000000..5124c907e --- /dev/null +++ b/Demo/Common/ethernet/FreeTCPIP/uip_arp.c @@ -0,0 +1,472 @@ +/** + * \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 + * + */ + +/* + * 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 1.5 2008/02/07 01:35:00 adamdunkels Exp $ + * + */ +#include "net/uip_arp.h" + +#include + +#include "net/pack_struct_start.h" +struct arp_hdr +{ + struct uip_eth_hdr ethhdr; + u16_t hwtype; + u16_t protocol; + u8_t hwlen; + u8_t protolen; + u16_t opcode; + struct uip_eth_addr shwaddr; + uip_ipaddr_t sipaddr; + struct uip_eth_addr dhwaddr; + uip_ipaddr_t dipaddr; +} + +#include "net/pack_struct_end.h" + +#include "net/pack_struct_start.h" + +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; + uip_ipaddr_t srcipaddr, destipaddr; +} + +#include "net/pack_struct_end.h" + +#define ARP_REQUEST 1 +#define ARP_REPLY 2 + +#define ARP_HWTYPE_ETH 1 + +struct arp_entry +{ + uip_ipaddr_t ipaddr; + struct uip_eth_addr ethaddr; + 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 uip_ipaddr_t ipaddr; +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] ) +#define DEBUG 0 +#if DEBUG +#include +#define PRINTF( ... ) printf( __VA_ARGS__ ) +#else + +//#define PRINTF( ... ) +#endif + +/*-----------------------------------------------------------------------------------*/ + +/** + * Initialize the ARP module. + * + */ + +/*-----------------------------------------------------------------------------------*/ +void uip_arp_init( void ) +{ + for( i = 0; i < UIP_ARPTAB_SIZE; ++i ) + { + memset( &arp_table[i].ipaddr, 0, 4 ); + } +} + +/*-----------------------------------------------------------------------------------*/ + +/** + * Periodic ARP processing function. + * + * This function performs periodic timer processing in the ARP module + * and should be called at regular intervals. The recommended interval + * is 10 seconds between the calls. + * + */ + +/*-----------------------------------------------------------------------------------*/ +void uip_arp_timer( void ) +{ + struct arp_entry *tabptr; + + ++arptime; + for( i = 0; i < UIP_ARPTAB_SIZE; ++i ) + { + tabptr = &arp_table[i]; + if( uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr) && arptime - tabptr->time >= UIP_ARP_MAXAGE ) + { + memset( &tabptr->ipaddr, 0, 4 ); + } + } +} + +/*-----------------------------------------------------------------------------------*/ +static void uip_arp_update( uip_ipaddr_t *ipaddr, struct uip_eth_addr *ethaddr ) +{ + register struct arp_entry *tabptr; + + /* Walk through the ARP mapping table and try to find an entry to + update. If none is found, the IP -> MAC address mapping is + inserted in the ARP table. */ + for( i = 0; i < UIP_ARPTAB_SIZE; ++i ) + { + tabptr = &arp_table[i]; + + /* Only check those entries that are actually in use. */ + if( !uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr) ) + { + /* Check if the source IP address of the incoming packet matches + the IP address in this ARP table entry. */ + if( uip_ipaddr_cmp(ipaddr, &tabptr->ipaddr) ) + { + /* An old entry found, update this and return. */ + memcpy( tabptr->ethaddr.addr, ethaddr->addr, 6 ); + tabptr->time = arptime; + + return; + } + } + } + + /* If we get here, no existing ARP table entry was found, so we + create one. */ + + /* First, we try to find an unused entry in the ARP table. */ + for( i = 0; i < UIP_ARPTAB_SIZE; ++i ) + { + tabptr = &arp_table[i]; + if( uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr) ) + { + break; + } + } + + /* If no unused entry is found, we try to find the oldest entry and + throw it away. */ + if( i == UIP_ARPTAB_SIZE ) + { + tmpage = 0; + c = 0; + for( i = 0; i < UIP_ARPTAB_SIZE; ++i ) + { + tabptr = &arp_table[i]; + if( arptime - tabptr->time > tmpage ) + { + tmpage = arptime - tabptr->time; + c = i; + } + } + + i = c; + tabptr = &arp_table[i]; + } + + /* Now, i is the ARP table entry which we will fill with the new + information. */ + uip_ipaddr_copy( &tabptr->ipaddr, ipaddr ); + memcpy( tabptr->ethaddr.addr, ethaddr->addr, 6 ); + tabptr->time = arptime; +} + +/*-----------------------------------------------------------------------------------*/ + +/** + * ARP processing for incoming IP packets + * + * This function should be called by the device driver when an IP + * packet has been received. The function will check if the address is + * in the ARP cache, and if so the ARP cache entry will be + * refreshed. If no ARP cache entry was found, a new one is created. + * + * This function expects an IP packet with a prepended Ethernet header + * in the uip_buf[] buffer, and the length of the packet in the global + * variable uip_len. + */ + +/*-----------------------------------------------------------------------------------*/ +#if 0 +void uip_arp_ipin( void ) +{ + uip_len -= sizeof( struct uip_eth_hdr ); + + /* Only insert/update an entry if the source IP address of the + incoming IP packet comes from a host on the local network. */ + if( (IPBUF->srcipaddr[0] & uip_netmask[0]) != (uip_hostaddr[0] & uip_netmask[0]) ) + { + return; + } + + if( (IPBUF->srcipaddr[1] & uip_netmask[1]) != (uip_hostaddr[1] & uip_netmask[1]) ) + { + return; + } + + uip_arp_update( IPBUF->srcipaddr, &(IPBUF->ethhdr.src) ); + + return; +} + +#endif /* 0 */ + +/*-----------------------------------------------------------------------------------*/ + +/** + * ARP processing for incoming ARP packets. + * + * This function should be called by the device driver when an ARP + * packet has been received. The function will act differently + * depending on the ARP packet type: if it is a reply for a request + * that we previously sent out, the ARP cache will be filled in with + * the values from the ARP reply. If the incoming ARP packet is an ARP + * request for our IP address, an ARP reply packet is created and put + * into the uip_buf[] buffer. + * + * When the function returns, the value of the global variable uip_len + * indicates whether the device driver should send out a packet or + * not. If uip_len is zero, no packet should be sent. If uip_len is + * non-zero, it contains the length of the outbound packet that is + * present in the uip_buf[] buffer. + * + * This function expects an ARP packet with a prepended Ethernet + * header in the uip_buf[] buffer, and the length of the packet in the + * global variable uip_len. + */ + +/*-----------------------------------------------------------------------------------*/ +void uip_arp_arpin( void ) +{ + if( uip_len < sizeof(struct arp_hdr) ) + { + uip_len = 0; + return; + } + + uip_len = 0; + + switch( BUF->opcode ) + { + case HTONS( ARP_REQUEST ): + /* ARP request. If it asked for our address, we send out a + reply. */ + + /* if(BUF->dipaddr[0] == uip_hostaddr[0] && + BUF->dipaddr[1] == uip_hostaddr[1]) {*/ + + //PRINTF( "uip_arp_arpin: request for %d.%d.%d.%d (we are %d.%d.%d.%d)\n", BUF->dipaddr.u8[0], BUF->dipaddr.u8[1], BUF->dipaddr.u8[2], + //BUF->dipaddr.u8[3], uip_hostaddr.u8[0], uip_hostaddr.u8[1], uip_hostaddr.u8[2], uip_hostaddr.u8[3] ); + if( uip_ipaddr_cmp(&BUF->dipaddr, &uip_hostaddr) ) + { + /* First, we register the one who made the request in our ARP + table, since it is likely that we will do more communication + with this host in the future. */ + uip_arp_update( &BUF->sipaddr, &BUF->shwaddr ); + + BUF->opcode = HTONS( ARP_REPLY ); + + 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 ); + + uip_ipaddr_copy( &BUF->dipaddr, &BUF->sipaddr ); + uip_ipaddr_copy( &BUF->sipaddr, &uip_hostaddr ); + + 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, &uip_broadcast_addr) ) + { + 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 ); +} + +/*-----------------------------------------------------------------------------------*/ + +/** @} */ + +/** @} */