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# tcpip.c

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    00001 /*
    00002  * Copyright (c) 2001, Swedish Institute of Computer Science.
    00003  * All rights reserved.
    00004  *
    00005  * Redistribution and use in source and binary forms, with or without
    00006  * modification, are permitted provided that the following conditions
    00007  * are met:
    00008  * 1. Redistributions of source code must retain the above copyright
    00009  *    notice, this list of conditions and the following disclaimer.
    00010  * 2. Redistributions in binary form must reproduce the above copyright
    00011  *    notice, this list of conditions and the following disclaimer in the
    00012  *    documentation and/or other materials provided with the distribution.
    00013  * 3. Neither the name of the Institute nor the names of its contributors
    00014  *    may be used to endorse or promote products derived from this software
    00015  *    without specific prior written permission.
    00016  *
    00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
    00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
    00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    00027  * SUCH DAMAGE.
    00028  *
    00029  * This file is part of the lwIP TCP/IP stack.
    00030  *
    00031  * Author: Adam Dunkels <adam@sics.se>
    00032  *
    00033  * $Id: tcpip_8c-source.html 88 2016-01-12 00:11:29Z reddawg $
    00034  */
    00035
    00036 #include <ubixos/exec.h>
    00037 #include <lib/kmalloc.h>
    00038
    00039 #include "net/debug.h"
    00040
    00041 #include "net/opt.h"
    00042
    00043 #include "net/sys.h"
    00044
    00045 #include "net/memp.h"
    00046 #include "net/pbuf.h"
    00047
    00048 #include "net/ipv4/ip.h"
    00049 #include "net/udp.h"
    00050 #include "net/tcp.h"
    00051
    00052 #include "net/tcpip.h"
    00053
    00054 static void (* tcpip_init_done)(void *arg) = NULL;
    00055 static void *tcpip_init_done_arg;
    00056 static sys_mbox_t mbox;
    00057
    00058 /*-----------------------------------------------------------------------------------*/
    00059 static void
    00060 tcpip_tcp_timer(void *arg)
    00061 {
    00062   tcp_tmr();
    00063   sys_timeout(TCP_TMR_INTERVAL, (sys_timeout_handler)tcpip_tcp_timer, NULL);
    00064 }
    00065 /*-----------------------------------------------------------------------------------*/
    00066
    00067 static void
    00068 tcpip_thread(void *arg)
    00069 {
    00070   struct tcpip_msg *msg;
    00071
    00072   ip_init();
    00073   udp_init();
    00074   tcp_init();
    00075
    00076   sys_timeout(TCP_TMR_INTERVAL, (sys_timeout_handler)tcpip_tcp_timer, NULL);
    00077
    00078   if(tcpip_init_done != NULL) {
    00079     tcpip_init_done(tcpip_init_done_arg);
    00080   }
    00081
    00082   while(1) {                          /* MAIN Loop */
    00083     sys_mbox_fetch(mbox, (void *)&msg);
    00084     switch(msg->type) {
    00085     case TCPIP_MSG_API:
    00086       //kprintf("tcpip_thread: API message %p\n", msg);
    00087       api_msg_input(msg->msg.apimsg);
    00088       break;
    00089     case TCPIP_MSG_INPUT:
    00090       //kprintf("tcpip_thread: IP packet %p\n", msg);
    00091       ip_input(msg->msg.inp.p, msg->msg.inp.netif);
    00092       break;
    00093     default:
    00094       break;
    00095     }
    00096     memp_freep(MEMP_TCPIP_MSG, msg);
    00097   }
    00098 }
    00099 /*-----------------------------------------------------------------------------------*/
    00100 err_t
    00101 tcpip_input(struct pbuf *p, struct netif *inp)
    00102 {
    00103   struct tcpip_msg *msg;
    00104
    00105   msg = memp_mallocp(MEMP_TCPIP_MSG);
    00106   if(msg == NULL) {
    00107     //kprintf("BAD MESSAGE!!!\n");
    00108     pbuf_free(p);
    00109     return ERR_MEM;
    00110   }
    00111   //kprintf("GOOD MESSAGE\n");
    00112
    00113   msg->type = TCPIP_MSG_INPUT;
    00114   msg->msg.inp.p = p;
    00115   msg->msg.inp.netif = inp;
    00116   sys_mbox_post(mbox, msg);
    00117   return ERR_OK;
    00118 }
    00119 /*-----------------------------------------------------------------------------------*/
    00120 void
    00121 tcpip_apimsg(struct api_msg *apimsg)
    00122 {
    00123   struct tcpip_msg *msg;
    00124   msg = memp_mallocp(MEMP_TCPIP_MSG);
    00125   if(msg == NULL) {
    00126     memp_free(MEMP_TCPIP_MSG, apimsg);
    00127     return;
    00128   }
    00129   msg->type = TCPIP_MSG_API;
    00130   msg->msg.apimsg = apimsg;
    00131   sys_mbox_post(mbox, msg);
    00132 }
    00133 /*-----------------------------------------------------------------------------------*/
    00134 void
    00135 tcpip_init(void (* initfunc)(void *), void *arg)
    00136 {
    00137   tcpip_init_done = initfunc;
    00138   tcpip_init_done_arg = arg;
    00139   mbox = sys_mbox_new();
    00140   sys_thread_new((void *)tcpip_thread, NULL);
    00141 }
    00142 /*-----------------------------------------------------------------------------------*/
    00143
    00144
    00145