2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
37 #include "lwip/memp.h"
38 #include "lwip/pbuf.h"
40 #include "netif/etharp.h"
43 #include "lwip/ip_frag.h"
47 #include "lwip/tcpip.h"
48 #include "lwip/igmp.h"
50 static void (* tcpip_init_done)(void *arg) = NULL;
51 static void *tcpip_init_done_arg = NULL;
52 static sys_mbox_t mbox = SYS_MBOX_NULL;
55 static int tcpip_tcp_timer_active = 0;
58 tcpip_tcp_timer(void *arg)
62 /* call TCP timer handler */
64 /* timer still needed? */
65 if (tcp_active_pcbs || tcp_tw_pcbs) {
67 sys_timeout( TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
70 tcpip_tcp_timer_active = 0;
76 tcp_timer_needed(void)
78 /* timer is off but needed again? */
79 if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
80 /* enable and start timer */
81 tcpip_tcp_timer_active = 1;
82 sys_timeout( TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
92 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip: ip_reass_tmr()\n"));
94 sys_timeout( IP_TMR_INTERVAL, ip_timer, NULL);
101 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip: etharp_tmr()\n"));
103 sys_timeout( ARP_TMR_INTERVAL, arp_timer, NULL);
108 dhcp_timer_coarse(void *arg)
110 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip: dhcp_coarse_tmr()\n"));
112 sys_timeout(DHCP_COARSE_TIMER_SECS*1000, dhcp_timer_coarse, NULL);
116 dhcp_timer_fine(void *arg)
118 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip: dhcp_fine_tmr()\n"));
120 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
124 #if ETHARP_TCPIP_ETHINPUT
126 ethernet_input(struct pbuf *p, struct netif *netif)
128 struct eth_hdr* ethhdr;
130 /* points to packet payload, which starts with an Ethernet header */
133 switch (htons(ethhdr->type)) {
136 #if ETHARP_TRUST_IP_MAC
137 /* update ARP table */
138 etharp_ip_input( netif, p);
140 /* skip Ethernet header */
141 if(pbuf_header(p, (s16_t)(-sizeof(struct eth_hdr)))) {
142 LWIP_ASSERT("Can't move over header in packet", 0);
147 /* pass to IP layer */
152 /* pass p to ARP module */
153 etharp_arp_input(netif, (struct eth_addr*)(netif->hwaddr), p);
162 #endif /* ETHARP_TCPIP_ETHINPUT */
165 tcpip_thread(void *arg)
167 struct tcpip_msg *msg;
170 sys_timeout( IP_TMR_INTERVAL, ip_timer, NULL);
172 sys_timeout( ARP_TMR_INTERVAL, arp_timer, NULL);
174 sys_timeout(DHCP_COARSE_TIMER_SECS*1000, dhcp_timer_coarse, NULL);
175 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
181 if (tcpip_init_done != NULL) {
182 tcpip_init_done(tcpip_init_done_arg);
185 while (1) { /* MAIN Loop */
186 sys_mbox_fetch(mbox, (void *)&msg);
189 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg));
190 api_msg_input(msg->msg.apimsg);
193 #if ETHARP_TCPIP_INPUT
194 case TCPIP_MSG_INPUT:
195 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: IP packet %p\n", (void *)msg));
196 ip_input(msg->msg.inp.p, msg->msg.inp.netif);
198 #endif /* ETHARP_TCPIP_INPUT */
200 #if ETHARP_TCPIP_ETHINPUT
201 case TCPIP_MSG_ETHINPUT:
202 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: Ethernet packet %p\n", (void *)msg));
203 ethernet_input(msg->msg.inp.p, msg->msg.inp.netif);
205 #endif /* ETHARP_TCPIP_ETHINPUT */
207 case TCPIP_MSG_CALLBACK:
208 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg));
209 msg->msg.cb.f(msg->msg.cb.ctx);
214 memp_free(MEMP_TCPIP_MSG, msg);
218 #if ETHARP_TCPIP_INPUT
220 tcpip_input(struct pbuf *p, struct netif *inp)
222 struct tcpip_msg *msg;
224 if (mbox != SYS_MBOX_NULL) {
225 msg = memp_malloc(MEMP_TCPIP_MSG);
231 msg->type = TCPIP_MSG_INPUT;
233 msg->msg.inp.netif = inp;
234 sys_mbox_post(mbox, msg);
239 #endif /* ETHARP_TCPIP_INPUT */
241 #if ETHARP_TCPIP_ETHINPUT
243 tcpip_ethinput(struct pbuf *p, struct netif *inp)
245 struct tcpip_msg *msg;
247 if (mbox != SYS_MBOX_NULL) {
248 msg = memp_malloc(MEMP_TCPIP_MSG);
254 msg->type = TCPIP_MSG_ETHINPUT;
256 msg->msg.inp.netif = inp;
257 sys_mbox_post(mbox, msg);
262 #endif /* ETHARP_TCPIP_ETHINPUT */
265 tcpip_callback(void (*f)(void *ctx), void *ctx)
267 struct tcpip_msg *msg;
269 if (mbox != SYS_MBOX_NULL) {
270 msg = memp_malloc(MEMP_TCPIP_MSG);
275 msg->type = TCPIP_MSG_CALLBACK;
277 msg->msg.cb.ctx = ctx;
278 sys_mbox_post(mbox, msg);
285 tcpip_apimsg(struct api_msg *apimsg)
287 struct tcpip_msg *msg;
289 if (mbox != SYS_MBOX_NULL) {
290 msg = memp_malloc(MEMP_TCPIP_MSG);
294 msg->type = TCPIP_MSG_API;
295 msg->msg.apimsg = apimsg;
296 sys_mbox_post(mbox, msg);
303 tcpip_init(void (* initfunc)(void *), void *arg)
313 tcpip_init_done = initfunc;
314 tcpip_init_done_arg = arg;
315 mbox = sys_mbox_new();
316 sys_thread_new(tcpip_thread, NULL, TCPIP_THREAD_PRIO);