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Dependencies:   BufferedSerial FatFileSystemCpp mbed

EthernetInterface/lwip/api/tcpip.c@74:a1bf25282cb1, 2022-02-10 (annotated)

Committer:
JamieB
Date:
Thu Feb 10 10:43:50 2022 +0000
Revision:
74:a1bf25282cb1
Parent:
22:0dd9c1b5664a 
Incremented version to 0.27 (forgot to on the last commit...)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AndyA 22:0dd9c1b5664a 1 /**
AndyA 22:0dd9c1b5664a 2 * @file
AndyA 22:0dd9c1b5664a 3 * Sequential API Main thread module
AndyA 22:0dd9c1b5664a 4 *
AndyA 22:0dd9c1b5664a 5 */
AndyA 22:0dd9c1b5664a 6
AndyA 22:0dd9c1b5664a 7 /*
AndyA 22:0dd9c1b5664a 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
AndyA 22:0dd9c1b5664a 9 * All rights reserved.
AndyA 22:0dd9c1b5664a 10 *
AndyA 22:0dd9c1b5664a 11 * Redistribution and use in source and binary forms, with or without modification,
AndyA 22:0dd9c1b5664a 12 * are permitted provided that the following conditions are met:
AndyA 22:0dd9c1b5664a 13 *
AndyA 22:0dd9c1b5664a 14 * 1. Redistributions of source code must retain the above copyright notice,
AndyA 22:0dd9c1b5664a 15 * this list of conditions and the following disclaimer.
AndyA 22:0dd9c1b5664a 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
AndyA 22:0dd9c1b5664a 17 * this list of conditions and the following disclaimer in the documentation
AndyA 22:0dd9c1b5664a 18 * and/or other materials provided with the distribution.
AndyA 22:0dd9c1b5664a 19 * 3. The name of the author may not be used to endorse or promote products
AndyA 22:0dd9c1b5664a 20 * derived from this software without specific prior written permission.
AndyA 22:0dd9c1b5664a 21 *
AndyA 22:0dd9c1b5664a 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
AndyA 22:0dd9c1b5664a 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
AndyA 22:0dd9c1b5664a 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
AndyA 22:0dd9c1b5664a 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
AndyA 22:0dd9c1b5664a 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
AndyA 22:0dd9c1b5664a 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
AndyA 22:0dd9c1b5664a 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
AndyA 22:0dd9c1b5664a 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
AndyA 22:0dd9c1b5664a 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
AndyA 22:0dd9c1b5664a 31 * OF SUCH DAMAGE.
AndyA 22:0dd9c1b5664a 32 *
AndyA 22:0dd9c1b5664a 33 * This file is part of the lwIP TCP/IP stack.
AndyA 22:0dd9c1b5664a 34 *
AndyA 22:0dd9c1b5664a 35 * Author: Adam Dunkels <adam@sics.se>
AndyA 22:0dd9c1b5664a 36 *
AndyA 22:0dd9c1b5664a 37 */
AndyA 22:0dd9c1b5664a 38
AndyA 22:0dd9c1b5664a 39 #include "lwip/opt.h"
AndyA 22:0dd9c1b5664a 40
AndyA 22:0dd9c1b5664a 41 #if !NO_SYS /* don't build if not configured for use in lwipopts.h */
AndyA 22:0dd9c1b5664a 42
AndyA 22:0dd9c1b5664a 43 #include "lwip/sys.h"
AndyA 22:0dd9c1b5664a 44 #include "lwip/memp.h"
AndyA 22:0dd9c1b5664a 45 #include "lwip/mem.h"
AndyA 22:0dd9c1b5664a 46 #include "lwip/pbuf.h"
AndyA 22:0dd9c1b5664a 47 #include "lwip/tcpip.h"
AndyA 22:0dd9c1b5664a 48 #include "lwip/init.h"
AndyA 22:0dd9c1b5664a 49 #include "netif/etharp.h"
AndyA 22:0dd9c1b5664a 50 #include "netif/ppp_oe.h"
AndyA 22:0dd9c1b5664a 51
AndyA 22:0dd9c1b5664a 52 /* global variables */
AndyA 22:0dd9c1b5664a 53 static tcpip_init_done_fn tcpip_init_done;
AndyA 22:0dd9c1b5664a 54 static void *tcpip_init_done_arg;
AndyA 22:0dd9c1b5664a 55 static sys_mbox_t mbox;
AndyA 22:0dd9c1b5664a 56
AndyA 22:0dd9c1b5664a 57 #if LWIP_TCPIP_CORE_LOCKING
AndyA 22:0dd9c1b5664a 58 /** The global semaphore to lock the stack. */
AndyA 22:0dd9c1b5664a 59 sys_mutex_t lock_tcpip_core;
AndyA 22:0dd9c1b5664a 60 #endif /* LWIP_TCPIP_CORE_LOCKING */
AndyA 22:0dd9c1b5664a 61
AndyA 22:0dd9c1b5664a 62
AndyA 22:0dd9c1b5664a 63 /**
AndyA 22:0dd9c1b5664a 64 * The main lwIP thread. This thread has exclusive access to lwIP core functions
AndyA 22:0dd9c1b5664a 65 * (unless access to them is not locked). Other threads communicate with this
AndyA 22:0dd9c1b5664a 66 * thread using message boxes.
AndyA 22:0dd9c1b5664a 67 *
AndyA 22:0dd9c1b5664a 68 * It also starts all the timers to make sure they are running in the right
AndyA 22:0dd9c1b5664a 69 * thread context.
AndyA 22:0dd9c1b5664a 70 *
AndyA 22:0dd9c1b5664a 71 * @param arg unused argument
AndyA 22:0dd9c1b5664a 72 */
AndyA 22:0dd9c1b5664a 73 static void
AndyA 22:0dd9c1b5664a 74 tcpip_thread(void *arg)
AndyA 22:0dd9c1b5664a 75 {
AndyA 22:0dd9c1b5664a 76 struct tcpip_msg *msg;
AndyA 22:0dd9c1b5664a 77 LWIP_UNUSED_ARG(arg);
AndyA 22:0dd9c1b5664a 78
AndyA 22:0dd9c1b5664a 79 if (tcpip_init_done != NULL) {
AndyA 22:0dd9c1b5664a 80 tcpip_init_done(tcpip_init_done_arg);
AndyA 22:0dd9c1b5664a 81 }
AndyA 22:0dd9c1b5664a 82
AndyA 22:0dd9c1b5664a 83 LOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 84 while (1) { /* MAIN Loop */
AndyA 22:0dd9c1b5664a 85 UNLOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 86 LWIP_TCPIP_THREAD_ALIVE();
AndyA 22:0dd9c1b5664a 87 /* wait for a message, timeouts are processed while waiting */
AndyA 22:0dd9c1b5664a 88 sys_timeouts_mbox_fetch(&mbox, (void **)&msg);
AndyA 22:0dd9c1b5664a 89 LOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 90 switch (msg->type) {
AndyA 22:0dd9c1b5664a 91 #if LWIP_NETCONN
AndyA 22:0dd9c1b5664a 92 case TCPIP_MSG_API:
AndyA 22:0dd9c1b5664a 93 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg));
AndyA 22:0dd9c1b5664a 94 msg->msg.apimsg->function(&(msg->msg.apimsg->msg));
AndyA 22:0dd9c1b5664a 95 break;
AndyA 22:0dd9c1b5664a 96 #endif /* LWIP_NETCONN */
AndyA 22:0dd9c1b5664a 97
AndyA 22:0dd9c1b5664a 98 #if !LWIP_TCPIP_CORE_LOCKING_INPUT
AndyA 22:0dd9c1b5664a 99 case TCPIP_MSG_INPKT:
AndyA 22:0dd9c1b5664a 100 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: PACKET %p\n", (void *)msg));
AndyA 22:0dd9c1b5664a 101 #if LWIP_ETHERNET
AndyA 22:0dd9c1b5664a 102 if (msg->msg.inp.netif->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
AndyA 22:0dd9c1b5664a 103 ethernet_input(msg->msg.inp.p, msg->msg.inp.netif);
AndyA 22:0dd9c1b5664a 104 } else
AndyA 22:0dd9c1b5664a 105 #endif /* LWIP_ETHERNET */
AndyA 22:0dd9c1b5664a 106 {
AndyA 22:0dd9c1b5664a 107 ip_input(msg->msg.inp.p, msg->msg.inp.netif);
AndyA 22:0dd9c1b5664a 108 }
AndyA 22:0dd9c1b5664a 109 memp_free(MEMP_TCPIP_MSG_INPKT, msg);
AndyA 22:0dd9c1b5664a 110 break;
AndyA 22:0dd9c1b5664a 111 #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
AndyA 22:0dd9c1b5664a 112
AndyA 22:0dd9c1b5664a 113 #if LWIP_NETIF_API
AndyA 22:0dd9c1b5664a 114 case TCPIP_MSG_NETIFAPI:
AndyA 22:0dd9c1b5664a 115 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: Netif API message %p\n", (void *)msg));
AndyA 22:0dd9c1b5664a 116 msg->msg.netifapimsg->function(&(msg->msg.netifapimsg->msg));
AndyA 22:0dd9c1b5664a 117 break;
AndyA 22:0dd9c1b5664a 118 #endif /* LWIP_NETIF_API */
AndyA 22:0dd9c1b5664a 119
AndyA 22:0dd9c1b5664a 120 case TCPIP_MSG_CALLBACK:
AndyA 22:0dd9c1b5664a 121 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg));
AndyA 22:0dd9c1b5664a 122 msg->msg.cb.function(msg->msg.cb.ctx);
AndyA 22:0dd9c1b5664a 123 memp_free(MEMP_TCPIP_MSG_API, msg);
AndyA 22:0dd9c1b5664a 124 break;
AndyA 22:0dd9c1b5664a 125
AndyA 22:0dd9c1b5664a 126 #if LWIP_TCPIP_TIMEOUT
AndyA 22:0dd9c1b5664a 127 case TCPIP_MSG_TIMEOUT:
AndyA 22:0dd9c1b5664a 128 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: TIMEOUT %p\n", (void *)msg));
AndyA 22:0dd9c1b5664a 129 sys_timeout(msg->msg.tmo.msecs, msg->msg.tmo.h, msg->msg.tmo.arg);
AndyA 22:0dd9c1b5664a 130 memp_free(MEMP_TCPIP_MSG_API, msg);
AndyA 22:0dd9c1b5664a 131 break;
AndyA 22:0dd9c1b5664a 132 case TCPIP_MSG_UNTIMEOUT:
AndyA 22:0dd9c1b5664a 133 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: UNTIMEOUT %p\n", (void *)msg));
AndyA 22:0dd9c1b5664a 134 sys_untimeout(msg->msg.tmo.h, msg->msg.tmo.arg);
AndyA 22:0dd9c1b5664a 135 memp_free(MEMP_TCPIP_MSG_API, msg);
AndyA 22:0dd9c1b5664a 136 break;
AndyA 22:0dd9c1b5664a 137 #endif /* LWIP_TCPIP_TIMEOUT */
AndyA 22:0dd9c1b5664a 138
AndyA 22:0dd9c1b5664a 139 default:
AndyA 22:0dd9c1b5664a 140 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: invalid message: %d\n", msg->type));
AndyA 22:0dd9c1b5664a 141 LWIP_ASSERT("tcpip_thread: invalid message", 0);
AndyA 22:0dd9c1b5664a 142 break;
AndyA 22:0dd9c1b5664a 143 }
AndyA 22:0dd9c1b5664a 144 }
AndyA 22:0dd9c1b5664a 145 }
AndyA 22:0dd9c1b5664a 146
AndyA 22:0dd9c1b5664a 147 /**
AndyA 22:0dd9c1b5664a 148 * Pass a received packet to tcpip_thread for input processing
AndyA 22:0dd9c1b5664a 149 *
AndyA 22:0dd9c1b5664a 150 * @param p the received packet, p->payload pointing to the Ethernet header or
AndyA 22:0dd9c1b5664a 151 * to an IP header (if inp doesn't have NETIF_FLAG_ETHARP or
AndyA 22:0dd9c1b5664a 152 * NETIF_FLAG_ETHERNET flags)
AndyA 22:0dd9c1b5664a 153 * @param inp the network interface on which the packet was received
AndyA 22:0dd9c1b5664a 154 */
AndyA 22:0dd9c1b5664a 155 err_t
AndyA 22:0dd9c1b5664a 156 tcpip_input(struct pbuf *p, struct netif *inp)
AndyA 22:0dd9c1b5664a 157 {
AndyA 22:0dd9c1b5664a 158 #if LWIP_TCPIP_CORE_LOCKING_INPUT
AndyA 22:0dd9c1b5664a 159 err_t ret;
AndyA 22:0dd9c1b5664a 160 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_input: PACKET %p/%p\n", (void *)p, (void *)inp));
AndyA 22:0dd9c1b5664a 161 LOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 162 #if LWIP_ETHERNET
AndyA 22:0dd9c1b5664a 163 if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
AndyA 22:0dd9c1b5664a 164 ret = ethernet_input(p, inp);
AndyA 22:0dd9c1b5664a 165 } else
AndyA 22:0dd9c1b5664a 166 #endif /* LWIP_ETHERNET */
AndyA 22:0dd9c1b5664a 167 {
AndyA 22:0dd9c1b5664a 168 ret = ip_input(p, inp);
AndyA 22:0dd9c1b5664a 169 }
AndyA 22:0dd9c1b5664a 170 UNLOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 171 return ret;
AndyA 22:0dd9c1b5664a 172 #else /* LWIP_TCPIP_CORE_LOCKING_INPUT */
AndyA 22:0dd9c1b5664a 173 struct tcpip_msg *msg;
AndyA 22:0dd9c1b5664a 174
AndyA 22:0dd9c1b5664a 175 if (sys_mbox_valid(&mbox)) {
AndyA 22:0dd9c1b5664a 176 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_INPKT);
AndyA 22:0dd9c1b5664a 177 if (msg == NULL) {
AndyA 22:0dd9c1b5664a 178 return ERR_MEM;
AndyA 22:0dd9c1b5664a 179 }
AndyA 22:0dd9c1b5664a 180
AndyA 22:0dd9c1b5664a 181 msg->type = TCPIP_MSG_INPKT;
AndyA 22:0dd9c1b5664a 182 msg->msg.inp.p = p;
AndyA 22:0dd9c1b5664a 183 msg->msg.inp.netif = inp;
AndyA 22:0dd9c1b5664a 184 if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
AndyA 22:0dd9c1b5664a 185 memp_free(MEMP_TCPIP_MSG_INPKT, msg);
AndyA 22:0dd9c1b5664a 186 return ERR_MEM;
AndyA 22:0dd9c1b5664a 187 }
AndyA 22:0dd9c1b5664a 188 return ERR_OK;
AndyA 22:0dd9c1b5664a 189 }
AndyA 22:0dd9c1b5664a 190 return ERR_VAL;
AndyA 22:0dd9c1b5664a 191 #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
AndyA 22:0dd9c1b5664a 192 }
AndyA 22:0dd9c1b5664a 193
AndyA 22:0dd9c1b5664a 194 /**
AndyA 22:0dd9c1b5664a 195 * Call a specific function in the thread context of
AndyA 22:0dd9c1b5664a 196 * tcpip_thread for easy access synchronization.
AndyA 22:0dd9c1b5664a 197 * A function called in that way may access lwIP core code
AndyA 22:0dd9c1b5664a 198 * without fearing concurrent access.
AndyA 22:0dd9c1b5664a 199 *
AndyA 22:0dd9c1b5664a 200 * @param f the function to call
AndyA 22:0dd9c1b5664a 201 * @param ctx parameter passed to f
AndyA 22:0dd9c1b5664a 202 * @param block 1 to block until the request is posted, 0 to non-blocking mode
AndyA 22:0dd9c1b5664a 203 * @return ERR_OK if the function was called, another err_t if not
AndyA 22:0dd9c1b5664a 204 */
AndyA 22:0dd9c1b5664a 205 err_t
AndyA 22:0dd9c1b5664a 206 tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block)
AndyA 22:0dd9c1b5664a 207 {
AndyA 22:0dd9c1b5664a 208 struct tcpip_msg *msg;
AndyA 22:0dd9c1b5664a 209
AndyA 22:0dd9c1b5664a 210 if (sys_mbox_valid(&mbox)) {
AndyA 22:0dd9c1b5664a 211 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
AndyA 22:0dd9c1b5664a 212 if (msg == NULL) {
AndyA 22:0dd9c1b5664a 213 return ERR_MEM;
AndyA 22:0dd9c1b5664a 214 }
AndyA 22:0dd9c1b5664a 215
AndyA 22:0dd9c1b5664a 216 msg->type = TCPIP_MSG_CALLBACK;
AndyA 22:0dd9c1b5664a 217 msg->msg.cb.function = function;
AndyA 22:0dd9c1b5664a 218 msg->msg.cb.ctx = ctx;
AndyA 22:0dd9c1b5664a 219 if (block) {
AndyA 22:0dd9c1b5664a 220 sys_mbox_post(&mbox, msg);
AndyA 22:0dd9c1b5664a 221 } else {
AndyA 22:0dd9c1b5664a 222 if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
AndyA 22:0dd9c1b5664a 223 memp_free(MEMP_TCPIP_MSG_API, msg);
AndyA 22:0dd9c1b5664a 224 return ERR_MEM;
AndyA 22:0dd9c1b5664a 225 }
AndyA 22:0dd9c1b5664a 226 }
AndyA 22:0dd9c1b5664a 227 return ERR_OK;
AndyA 22:0dd9c1b5664a 228 }
AndyA 22:0dd9c1b5664a 229 return ERR_VAL;
AndyA 22:0dd9c1b5664a 230 }
AndyA 22:0dd9c1b5664a 231
AndyA 22:0dd9c1b5664a 232 #if LWIP_TCPIP_TIMEOUT
AndyA 22:0dd9c1b5664a 233 /**
AndyA 22:0dd9c1b5664a 234 * call sys_timeout in tcpip_thread
AndyA 22:0dd9c1b5664a 235 *
AndyA 22:0dd9c1b5664a 236 * @param msec time in milliseconds for timeout
AndyA 22:0dd9c1b5664a 237 * @param h function to be called on timeout
AndyA 22:0dd9c1b5664a 238 * @param arg argument to pass to timeout function h
AndyA 22:0dd9c1b5664a 239 * @return ERR_MEM on memory error, ERR_OK otherwise
AndyA 22:0dd9c1b5664a 240 */
AndyA 22:0dd9c1b5664a 241 err_t
AndyA 22:0dd9c1b5664a 242 tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg)
AndyA 22:0dd9c1b5664a 243 {
AndyA 22:0dd9c1b5664a 244 struct tcpip_msg *msg;
AndyA 22:0dd9c1b5664a 245
AndyA 22:0dd9c1b5664a 246 if (sys_mbox_valid(&mbox)) {
AndyA 22:0dd9c1b5664a 247 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
AndyA 22:0dd9c1b5664a 248 if (msg == NULL) {
AndyA 22:0dd9c1b5664a 249 return ERR_MEM;
AndyA 22:0dd9c1b5664a 250 }
AndyA 22:0dd9c1b5664a 251
AndyA 22:0dd9c1b5664a 252 msg->type = TCPIP_MSG_TIMEOUT;
AndyA 22:0dd9c1b5664a 253 msg->msg.tmo.msecs = msecs;
AndyA 22:0dd9c1b5664a 254 msg->msg.tmo.h = h;
AndyA 22:0dd9c1b5664a 255 msg->msg.tmo.arg = arg;
AndyA 22:0dd9c1b5664a 256 sys_mbox_post(&mbox, msg);
AndyA 22:0dd9c1b5664a 257 return ERR_OK;
AndyA 22:0dd9c1b5664a 258 }
AndyA 22:0dd9c1b5664a 259 return ERR_VAL;
AndyA 22:0dd9c1b5664a 260 }
AndyA 22:0dd9c1b5664a 261
AndyA 22:0dd9c1b5664a 262 /**
AndyA 22:0dd9c1b5664a 263 * call sys_untimeout in tcpip_thread
AndyA 22:0dd9c1b5664a 264 *
AndyA 22:0dd9c1b5664a 265 * @param msec time in milliseconds for timeout
AndyA 22:0dd9c1b5664a 266 * @param h function to be called on timeout
AndyA 22:0dd9c1b5664a 267 * @param arg argument to pass to timeout function h
AndyA 22:0dd9c1b5664a 268 * @return ERR_MEM on memory error, ERR_OK otherwise
AndyA 22:0dd9c1b5664a 269 */
AndyA 22:0dd9c1b5664a 270 err_t
AndyA 22:0dd9c1b5664a 271 tcpip_untimeout(sys_timeout_handler h, void *arg)
AndyA 22:0dd9c1b5664a 272 {
AndyA 22:0dd9c1b5664a 273 struct tcpip_msg *msg;
AndyA 22:0dd9c1b5664a 274
AndyA 22:0dd9c1b5664a 275 if (sys_mbox_valid(&mbox)) {
AndyA 22:0dd9c1b5664a 276 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
AndyA 22:0dd9c1b5664a 277 if (msg == NULL) {
AndyA 22:0dd9c1b5664a 278 return ERR_MEM;
AndyA 22:0dd9c1b5664a 279 }
AndyA 22:0dd9c1b5664a 280
AndyA 22:0dd9c1b5664a 281 msg->type = TCPIP_MSG_UNTIMEOUT;
AndyA 22:0dd9c1b5664a 282 msg->msg.tmo.h = h;
AndyA 22:0dd9c1b5664a 283 msg->msg.tmo.arg = arg;
AndyA 22:0dd9c1b5664a 284 sys_mbox_post(&mbox, msg);
AndyA 22:0dd9c1b5664a 285 return ERR_OK;
AndyA 22:0dd9c1b5664a 286 }
AndyA 22:0dd9c1b5664a 287 return ERR_VAL;
AndyA 22:0dd9c1b5664a 288 }
AndyA 22:0dd9c1b5664a 289 #endif /* LWIP_TCPIP_TIMEOUT */
AndyA 22:0dd9c1b5664a 290
AndyA 22:0dd9c1b5664a 291 #if LWIP_NETCONN
AndyA 22:0dd9c1b5664a 292 /**
AndyA 22:0dd9c1b5664a 293 * Call the lower part of a netconn_* function
AndyA 22:0dd9c1b5664a 294 * This function is then running in the thread context
AndyA 22:0dd9c1b5664a 295 * of tcpip_thread and has exclusive access to lwIP core code.
AndyA 22:0dd9c1b5664a 296 *
AndyA 22:0dd9c1b5664a 297 * @param apimsg a struct containing the function to call and its parameters
AndyA 22:0dd9c1b5664a 298 * @return ERR_OK if the function was called, another err_t if not
AndyA 22:0dd9c1b5664a 299 */
AndyA 22:0dd9c1b5664a 300 err_t
AndyA 22:0dd9c1b5664a 301 tcpip_apimsg(struct api_msg *apimsg)
AndyA 22:0dd9c1b5664a 302 {
AndyA 22:0dd9c1b5664a 303 struct tcpip_msg msg;
AndyA 22:0dd9c1b5664a 304 #ifdef LWIP_DEBUG
AndyA 22:0dd9c1b5664a 305 /* catch functions that don't set err */
AndyA 22:0dd9c1b5664a 306 apimsg->msg.err = ERR_VAL;
AndyA 22:0dd9c1b5664a 307 #endif
AndyA 22:0dd9c1b5664a 308
AndyA 22:0dd9c1b5664a 309 if (sys_mbox_valid(&mbox)) {
AndyA 22:0dd9c1b5664a 310 msg.type = TCPIP_MSG_API;
AndyA 22:0dd9c1b5664a 311 msg.msg.apimsg = apimsg;
AndyA 22:0dd9c1b5664a 312 sys_mbox_post(&mbox, &msg);
AndyA 22:0dd9c1b5664a 313 sys_arch_sem_wait(&apimsg->msg.conn->op_completed, 0);
AndyA 22:0dd9c1b5664a 314 return apimsg->msg.err;
AndyA 22:0dd9c1b5664a 315 }
AndyA 22:0dd9c1b5664a 316 return ERR_VAL;
AndyA 22:0dd9c1b5664a 317 }
AndyA 22:0dd9c1b5664a 318
AndyA 22:0dd9c1b5664a 319 #if LWIP_TCPIP_CORE_LOCKING
AndyA 22:0dd9c1b5664a 320 /**
AndyA 22:0dd9c1b5664a 321 * Call the lower part of a netconn_* function
AndyA 22:0dd9c1b5664a 322 * This function has exclusive access to lwIP core code by locking it
AndyA 22:0dd9c1b5664a 323 * before the function is called.
AndyA 22:0dd9c1b5664a 324 *
AndyA 22:0dd9c1b5664a 325 * @param apimsg a struct containing the function to call and its parameters
AndyA 22:0dd9c1b5664a 326 * @return ERR_OK (only for compatibility fo tcpip_apimsg())
AndyA 22:0dd9c1b5664a 327 */
AndyA 22:0dd9c1b5664a 328 err_t
AndyA 22:0dd9c1b5664a 329 tcpip_apimsg_lock(struct api_msg *apimsg)
AndyA 22:0dd9c1b5664a 330 {
AndyA 22:0dd9c1b5664a 331 #ifdef LWIP_DEBUG
AndyA 22:0dd9c1b5664a 332 /* catch functions that don't set err */
AndyA 22:0dd9c1b5664a 333 apimsg->msg.err = ERR_VAL;
AndyA 22:0dd9c1b5664a 334 #endif
AndyA 22:0dd9c1b5664a 335
AndyA 22:0dd9c1b5664a 336 LOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 337 apimsg->function(&(apimsg->msg));
AndyA 22:0dd9c1b5664a 338 UNLOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 339 return apimsg->msg.err;
AndyA 22:0dd9c1b5664a 340
AndyA 22:0dd9c1b5664a 341 }
AndyA 22:0dd9c1b5664a 342 #endif /* LWIP_TCPIP_CORE_LOCKING */
AndyA 22:0dd9c1b5664a 343 #endif /* LWIP_NETCONN */
AndyA 22:0dd9c1b5664a 344
AndyA 22:0dd9c1b5664a 345 #if LWIP_NETIF_API
AndyA 22:0dd9c1b5664a 346 #if !LWIP_TCPIP_CORE_LOCKING
AndyA 22:0dd9c1b5664a 347 /**
AndyA 22:0dd9c1b5664a 348 * Much like tcpip_apimsg, but calls the lower part of a netifapi_*
AndyA 22:0dd9c1b5664a 349 * function.
AndyA 22:0dd9c1b5664a 350 *
AndyA 22:0dd9c1b5664a 351 * @param netifapimsg a struct containing the function to call and its parameters
AndyA 22:0dd9c1b5664a 352 * @return error code given back by the function that was called
AndyA 22:0dd9c1b5664a 353 */
AndyA 22:0dd9c1b5664a 354 err_t
AndyA 22:0dd9c1b5664a 355 tcpip_netifapi(struct netifapi_msg* netifapimsg)
AndyA 22:0dd9c1b5664a 356 {
AndyA 22:0dd9c1b5664a 357 struct tcpip_msg msg;
AndyA 22:0dd9c1b5664a 358
AndyA 22:0dd9c1b5664a 359 if (sys_mbox_valid(&mbox)) {
AndyA 22:0dd9c1b5664a 360 err_t err = sys_sem_new(&netifapimsg->msg.sem, 0);
AndyA 22:0dd9c1b5664a 361 if (err != ERR_OK) {
AndyA 22:0dd9c1b5664a 362 netifapimsg->msg.err = err;
AndyA 22:0dd9c1b5664a 363 return err;
AndyA 22:0dd9c1b5664a 364 }
AndyA 22:0dd9c1b5664a 365
AndyA 22:0dd9c1b5664a 366 msg.type = TCPIP_MSG_NETIFAPI;
AndyA 22:0dd9c1b5664a 367 msg.msg.netifapimsg = netifapimsg;
AndyA 22:0dd9c1b5664a 368 sys_mbox_post(&mbox, &msg);
AndyA 22:0dd9c1b5664a 369 sys_sem_wait(&netifapimsg->msg.sem);
AndyA 22:0dd9c1b5664a 370 sys_sem_free(&netifapimsg->msg.sem);
AndyA 22:0dd9c1b5664a 371 return netifapimsg->msg.err;
AndyA 22:0dd9c1b5664a 372 }
AndyA 22:0dd9c1b5664a 373 return ERR_VAL;
AndyA 22:0dd9c1b5664a 374 }
AndyA 22:0dd9c1b5664a 375 #else /* !LWIP_TCPIP_CORE_LOCKING */
AndyA 22:0dd9c1b5664a 376 /**
AndyA 22:0dd9c1b5664a 377 * Call the lower part of a netifapi_* function
AndyA 22:0dd9c1b5664a 378 * This function has exclusive access to lwIP core code by locking it
AndyA 22:0dd9c1b5664a 379 * before the function is called.
AndyA 22:0dd9c1b5664a 380 *
AndyA 22:0dd9c1b5664a 381 * @param netifapimsg a struct containing the function to call and its parameters
AndyA 22:0dd9c1b5664a 382 * @return ERR_OK (only for compatibility fo tcpip_netifapi())
AndyA 22:0dd9c1b5664a 383 */
AndyA 22:0dd9c1b5664a 384 err_t
AndyA 22:0dd9c1b5664a 385 tcpip_netifapi_lock(struct netifapi_msg* netifapimsg)
AndyA 22:0dd9c1b5664a 386 {
AndyA 22:0dd9c1b5664a 387 LOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 388 netifapimsg->function(&(netifapimsg->msg));
AndyA 22:0dd9c1b5664a 389 UNLOCK_TCPIP_CORE();
AndyA 22:0dd9c1b5664a 390 return netifapimsg->msg.err;
AndyA 22:0dd9c1b5664a 391 }
AndyA 22:0dd9c1b5664a 392 #endif /* !LWIP_TCPIP_CORE_LOCKING */
AndyA 22:0dd9c1b5664a 393 #endif /* LWIP_NETIF_API */
AndyA 22:0dd9c1b5664a 394
AndyA 22:0dd9c1b5664a 395 /**
AndyA 22:0dd9c1b5664a 396 * Initialize this module:
AndyA 22:0dd9c1b5664a 397 * - initialize all sub modules
AndyA 22:0dd9c1b5664a 398 * - start the tcpip_thread
AndyA 22:0dd9c1b5664a 399 *
AndyA 22:0dd9c1b5664a 400 * @param initfunc a function to call when tcpip_thread is running and finished initializing
AndyA 22:0dd9c1b5664a 401 * @param arg argument to pass to initfunc
AndyA 22:0dd9c1b5664a 402 */
AndyA 22:0dd9c1b5664a 403 void
AndyA 22:0dd9c1b5664a 404 tcpip_init(tcpip_init_done_fn initfunc, void *arg)
AndyA 22:0dd9c1b5664a 405 {
AndyA 22:0dd9c1b5664a 406 lwip_init();
AndyA 22:0dd9c1b5664a 407
AndyA 22:0dd9c1b5664a 408 tcpip_init_done = initfunc;
AndyA 22:0dd9c1b5664a 409 tcpip_init_done_arg = arg;
AndyA 22:0dd9c1b5664a 410 if(sys_mbox_new(&mbox, TCPIP_MBOX_SIZE) != ERR_OK) {
AndyA 22:0dd9c1b5664a 411 LWIP_ASSERT("failed to create tcpip_thread mbox", 0);
AndyA 22:0dd9c1b5664a 412 }
AndyA 22:0dd9c1b5664a 413 #if LWIP_TCPIP_CORE_LOCKING
AndyA 22:0dd9c1b5664a 414 if(sys_mutex_new(&lock_tcpip_core) != ERR_OK) {
AndyA 22:0dd9c1b5664a 415 LWIP_ASSERT("failed to create lock_tcpip_core", 0);
AndyA 22:0dd9c1b5664a 416 }
AndyA 22:0dd9c1b5664a 417 #endif /* LWIP_TCPIP_CORE_LOCKING */
AndyA 22:0dd9c1b5664a 418
AndyA 22:0dd9c1b5664a 419 sys_thread_new(TCPIP_THREAD_NAME, tcpip_thread, NULL, TCPIP_THREAD_STACKSIZE, TCPIP_THREAD_PRIO);
AndyA 22:0dd9c1b5664a 420 }
AndyA 22:0dd9c1b5664a 421
AndyA 22:0dd9c1b5664a 422 /**
AndyA 22:0dd9c1b5664a 423 * Simple callback function used with tcpip_callback to free a pbuf
AndyA 22:0dd9c1b5664a 424 * (pbuf_free has a wrong signature for tcpip_callback)
AndyA 22:0dd9c1b5664a 425 *
AndyA 22:0dd9c1b5664a 426 * @param p The pbuf (chain) to be dereferenced.
AndyA 22:0dd9c1b5664a 427 */
AndyA 22:0dd9c1b5664a 428 static void
AndyA 22:0dd9c1b5664a 429 pbuf_free_int(void *p)
AndyA 22:0dd9c1b5664a 430 {
AndyA 22:0dd9c1b5664a 431 struct pbuf *q = (struct pbuf *)p;
AndyA 22:0dd9c1b5664a 432 pbuf_free(q);
AndyA 22:0dd9c1b5664a 433 }
AndyA 22:0dd9c1b5664a 434
AndyA 22:0dd9c1b5664a 435 /**
AndyA 22:0dd9c1b5664a 436 * A simple wrapper function that allows you to free a pbuf from interrupt context.
AndyA 22:0dd9c1b5664a 437 *
AndyA 22:0dd9c1b5664a 438 * @param p The pbuf (chain) to be dereferenced.
AndyA 22:0dd9c1b5664a 439 * @return ERR_OK if callback could be enqueued, an err_t if not
AndyA 22:0dd9c1b5664a 440 */
AndyA 22:0dd9c1b5664a 441 err_t
AndyA 22:0dd9c1b5664a 442 pbuf_free_callback(struct pbuf *p)
AndyA 22:0dd9c1b5664a 443 {
AndyA 22:0dd9c1b5664a 444 return tcpip_callback_with_block(pbuf_free_int, p, 0);
AndyA 22:0dd9c1b5664a 445 }
AndyA 22:0dd9c1b5664a 446
AndyA 22:0dd9c1b5664a 447 /**
AndyA 22:0dd9c1b5664a 448 * A simple wrapper function that allows you to free heap memory from
AndyA 22:0dd9c1b5664a 449 * interrupt context.
AndyA 22:0dd9c1b5664a 450 *
AndyA 22:0dd9c1b5664a 451 * @param m the heap memory to free
AndyA 22:0dd9c1b5664a 452 * @return ERR_OK if callback could be enqueued, an err_t if not
AndyA 22:0dd9c1b5664a 453 */
AndyA 22:0dd9c1b5664a 454 err_t
AndyA 22:0dd9c1b5664a 455 mem_free_callback(void *m)
AndyA 22:0dd9c1b5664a 456 {
AndyA 22:0dd9c1b5664a 457 return tcpip_callback_with_block(mem_free, m, 0);
AndyA 22:0dd9c1b5664a 458 }
AndyA 22:0dd9c1b5664a 459
AndyA 22:0dd9c1b5664a 460 #endif /* !NO_SYS */