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https://github.com/johncobb/avr_328p_freertos.git
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added support for lwip
This commit is contained in:
John Cobb
191
lwip/api/tcpip.c
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191
lwip/api/tcpip.c
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#include "lwip/opt.h"
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#include "lwip/sys.h"
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#include "lwip/memp.h"
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#include "lwip/pbuf.h"
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#include "lwip/ip.h"
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#include "lwip/ip_frag.h"
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#include "lwip/udp.h"
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#include "lwip/tcp.h"
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#include "lwip/tcpip.h"
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static void (* tcpip_init_done)(void *arg) = NULL;
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static void *tcpip_init_done_arg;
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static sys_mbox_t mbox;
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#if LWIP_TCP
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static int tcpip_tcp_timer_active = 0;
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static void tcpip_tcp_timer(void *arg)
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{
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(void)arg;
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/* call TCP timer handler */
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tcp_tmr();
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/* timer still needed? */
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if (tcp_active_pcbs || tcp_tw_pcbs) {
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/* restart timer */
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sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
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} else {
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/* disable timer */
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tcpip_tcp_timer_active = 0;
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}
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}
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#if !NO_SYS
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void tcp_timer_needed(void)
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{
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/* timer is off but needed again? */
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if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
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/* enable and start timer */
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tcpip_tcp_timer_active = 1;
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sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
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}
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}
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#endif /* !NO_SYS */
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#endif /* LWIP_TCP */
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#if IP_REASSEMBLY
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static void
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ip_timer(void *data)
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{
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LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip: ip_reass_tmr()\n"));
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ip_reass_tmr();
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sys_timeout(1000, ip_timer, NULL);
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}
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#endif
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static void tcpip_thread(void *arg)
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{
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struct tcpip_msg *msg;
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(void)arg;
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ip_init();
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#if LWIP_UDP
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udp_init();
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#endif
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#if LWIP_TCP
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tcp_init();
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#endif
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#if IP_REASSEMBLY
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sys_timeout(1000, ip_timer, NULL);
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#endif
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if (tcpip_init_done != NULL) {
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tcpip_init_done(tcpip_init_done_arg);
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}
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while (1) { /* MAIN Loop */
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sys_mbox_fetch(mbox, (void *)&msg);
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switch (msg->type) {
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case TCPIP_MSG_API:
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LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg));
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api_msg_input(msg->msg.apimsg);
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break;
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case TCPIP_MSG_INPUT:
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LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: IP packet %p\n", (void *)msg));
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ip_input(msg->msg.inp.p, msg->msg.inp.netif);
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break;
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case TCPIP_MSG_CALLBACK:
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LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg));
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msg->msg.cb.f(msg->msg.cb.ctx);
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break;
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default:
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break;
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}
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memp_free(MEMP_TCPIP_MSG, msg);
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}
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}
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err_t tcpip_input(struct pbuf *p, struct netif *inp)
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{
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struct tcpip_msg *msg;
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msg = memp_malloc(MEMP_TCPIP_MSG);
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if (msg == NULL) {
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pbuf_free(p);
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return ERR_MEM;
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}
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msg->type = TCPIP_MSG_INPUT;
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msg->msg.inp.p = p;
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msg->msg.inp.netif = inp;
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sys_mbox_post(mbox, msg);
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return ERR_OK;
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}
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err_t tcpip_callback(void (*f)(void *ctx), void *ctx)
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{
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struct tcpip_msg *msg;
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msg = memp_malloc(MEMP_TCPIP_MSG);
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if (msg == NULL) {
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return ERR_MEM;
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}
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msg->type = TCPIP_MSG_CALLBACK;
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msg->msg.cb.f = f;
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msg->msg.cb.ctx = ctx;
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sys_mbox_post(mbox, msg);
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return ERR_OK;
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}
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void tcpip_apimsg(struct api_msg *apimsg)
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{
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struct tcpip_msg *msg;
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msg = memp_malloc(MEMP_TCPIP_MSG);
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if (msg == NULL) {
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memp_free(MEMP_API_MSG, apimsg);
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return;
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}
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msg->type = TCPIP_MSG_API;
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msg->msg.apimsg = apimsg;
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sys_mbox_post(mbox, msg);
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}
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void tcpip_init(void (* initfunc)(void *), void *arg)
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{
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tcpip_init_done = initfunc;
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tcpip_init_done_arg = arg;
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mbox = sys_mbox_new();
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sys_thread_new(tcpip_thread, NULL, TCPIP_THREAD_PRIO);
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}
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