Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without modification, |
| 6 | * are permitted provided that the following conditions are met: |
| 7 | * |
| 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. |
| 15 | * |
| 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 |
| 25 | * OF SUCH DAMAGE. |
| 26 | * |
| 27 | * This file is part of the lwIP TCP/IP stack. |
| 28 | * |
| 29 | * Author: Adam Dunkels <adam@sics.se> |
| 30 | * |
| 31 | */ |
| 32 | |
| 33 | #include "lwip/opt.h" |
| 34 | |
| 35 | #include "lwip/sys.h" |
| 36 | |
| 37 | #include "lwip/memp.h" |
| 38 | #include "lwip/pbuf.h" |
| 39 | |
| 40 | #include "lwip/ip.h" |
| 41 | #include "lwip/ip_frag.h" |
| 42 | #include "lwip/udp.h" |
| 43 | #include "lwip/tcp.h" |
| 44 | |
| 45 | #include "lwip/tcpip.h" |
| 46 | |
| 47 | static void (* tcpip_init_done)(void *arg) = NULL; |
| 48 | static void *tcpip_init_done_arg; |
| 49 | static sys_mbox_t mbox; |
| 50 | |
| 51 | #if LWIP_TCP |
| 52 | static int tcpip_tcp_timer_active = 0; |
| 53 | |
| 54 | static void |
| 55 | tcpip_tcp_timer(void *arg) |
| 56 | { |
| 57 | (void)arg; |
| 58 | |
| 59 | /* call TCP timer handler */ |
| 60 | tcp_tmr(); |
| 61 | /* timer still needed? */ |
| 62 | if (tcp_active_pcbs || tcp_tw_pcbs) { |
| 63 | /* restart timer */ |
| 64 | sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL); |
| 65 | } else { |
| 66 | /* disable timer */ |
| 67 | tcpip_tcp_timer_active = 0; |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | #if !NO_SYS |
| 72 | void |
| 73 | tcp_timer_needed(void) |
| 74 | { |
| 75 | /* timer is off but needed again? */ |
| 76 | if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) { |
| 77 | /* enable and start timer */ |
| 78 | tcpip_tcp_timer_active = 1; |
| 79 | sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL); |
| 80 | } |
| 81 | } |
| 82 | #endif /* !NO_SYS */ |
| 83 | #endif /* LWIP_TCP */ |
| 84 | |
| 85 | #if IP_REASSEMBLY |
| 86 | static void |
| 87 | ip_timer(void *data) |
| 88 | { |
| 89 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip: ip_reass_tmr()\n")); |
| 90 | ip_reass_tmr(); |
| 91 | sys_timeout(1000, ip_timer, NULL); |
| 92 | } |
| 93 | #endif |
| 94 | |
| 95 | static void |
| 96 | tcpip_thread(void *arg) |
| 97 | { |
| 98 | struct tcpip_msg *msg; |
| 99 | |
| 100 | (void)arg; |
| 101 | |
| 102 | ip_init(); |
| 103 | #if LWIP_UDP |
| 104 | udp_init(); |
| 105 | #endif |
| 106 | #if LWIP_TCP |
| 107 | tcp_init(); |
| 108 | #endif |
| 109 | #if IP_REASSEMBLY |
| 110 | sys_timeout(1000, ip_timer, NULL); |
| 111 | #endif |
| 112 | if (tcpip_init_done != NULL) { |
| 113 | tcpip_init_done(tcpip_init_done_arg); |
| 114 | } |
| 115 | |
| 116 | while (1) { /* MAIN Loop */ |
| 117 | sys_mbox_fetch(mbox, (void *)&msg); |
| 118 | switch (msg->type) { |
| 119 | case TCPIP_MSG_API: |
| 120 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg)); |
| 121 | api_msg_input(msg->msg.apimsg); |
| 122 | break; |
| 123 | case TCPIP_MSG_INPUT: |
| 124 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: IP packet %p\n", (void *)msg)); |
| 125 | ip_input(msg->msg.inp.p, msg->msg.inp.netif); |
| 126 | break; |
| 127 | case TCPIP_MSG_CALLBACK: |
| 128 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg)); |
| 129 | msg->msg.cb.f(msg->msg.cb.ctx); |
| 130 | break; |
| 131 | default: |
| 132 | break; |
| 133 | } |
| 134 | memp_free(MEMP_TCPIP_MSG, msg); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | err_t |
| 139 | tcpip_input(struct pbuf *p, struct netif *inp) |
| 140 | { |
| 141 | struct tcpip_msg *msg; |
| 142 | |
| 143 | msg = memp_malloc(MEMP_TCPIP_MSG); |
| 144 | if (msg == NULL) { |
| 145 | pbuf_free(p); |
| 146 | return ERR_MEM; |
| 147 | } |
| 148 | |
| 149 | msg->type = TCPIP_MSG_INPUT; |
| 150 | msg->msg.inp.p = p; |
| 151 | msg->msg.inp.netif = inp; |
| 152 | sys_mbox_post(mbox, msg); |
| 153 | return ERR_OK; |
| 154 | } |
| 155 | |
| 156 | err_t |
| 157 | tcpip_callback(void (*f)(void *ctx), void *ctx) |
| 158 | { |
| 159 | struct tcpip_msg *msg; |
| 160 | |
| 161 | msg = memp_malloc(MEMP_TCPIP_MSG); |
| 162 | if (msg == NULL) { |
| 163 | return ERR_MEM; |
| 164 | } |
| 165 | |
| 166 | msg->type = TCPIP_MSG_CALLBACK; |
| 167 | msg->msg.cb.f = f; |
| 168 | msg->msg.cb.ctx = ctx; |
| 169 | sys_mbox_post(mbox, msg); |
| 170 | return ERR_OK; |
| 171 | } |
| 172 | |
| 173 | void |
| 174 | tcpip_apimsg(struct api_msg *apimsg) |
| 175 | { |
| 176 | struct tcpip_msg *msg; |
| 177 | msg = memp_malloc(MEMP_TCPIP_MSG); |
| 178 | if (msg == NULL) { |
| 179 | memp_free(MEMP_API_MSG, apimsg); |
| 180 | return; |
| 181 | } |
| 182 | msg->type = TCPIP_MSG_API; |
| 183 | msg->msg.apimsg = apimsg; |
| 184 | sys_mbox_post(mbox, msg); |
| 185 | } |
| 186 | |
| 187 | void |
| 188 | tcpip_init(void (* initfunc)(void *), void *arg) |
| 189 | { |
| 190 | tcpip_init_done = initfunc; |
| 191 | tcpip_init_done_arg = arg; |
| 192 | mbox = sys_mbox_new(); |
| 193 | sys_thread_new(tcpip_thread, NULL, TCPIP_THREAD_PRIO); |
| 194 | } |
| 195 | |
| 196 | |
| 197 | |
| 198 | |