mbed official / lwip

Official mbed lwIP library (version 1.4.0)

Dependents:   LwIPNetworking NetServicesMin EthernetInterface EthernetInterface_RSF ... more

Legacy Networking Libraries

This is an mbed 2 networking library. For mbed OS 5, lwip has been integrated with built-in networking interfaces. The networking libraries have been revised to better support additional network stacks and thread safety here.

This library is based on the code of lwIP v1.4.0

Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
All rights reserved. 

Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
OF SUCH DAMAGE.

api/tcpip.c@20:08f08bfc3f3d, 2016-03-14 (annotated)

Committer:
mbed_official
Date:
Mon Mar 14 16:15:36 2016 +0000
Revision:
20:08f08bfc3f3d
Parent:
0:51ac1d130fd4 
Synchronized with git revision fec574a5ed6db26aca1b13992ff271bf527d4a0d



Full URL: https://github.com/mbedmicro/mbed/commit/fec574a5ed6db26aca1b13992ff271bf527d4a0d/



Increased allocated netbufs to handle DTLS handshakes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:51ac1d130fd4 1 /**
mbed_official 0:51ac1d130fd4 2 * @file
mbed_official 0:51ac1d130fd4 3 * Sequential API Main thread module
mbed_official 0:51ac1d130fd4 4 *
mbed_official 0:51ac1d130fd4 5 */
mbed_official 0:51ac1d130fd4 6
mbed_official 0:51ac1d130fd4 7 /*
mbed_official 0:51ac1d130fd4 8 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
mbed_official 0:51ac1d130fd4 9 * All rights reserved.
mbed_official 0:51ac1d130fd4 10 *
mbed_official 0:51ac1d130fd4 11 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 0:51ac1d130fd4 12 * are permitted provided that the following conditions are met:
mbed_official 0:51ac1d130fd4 13 *
mbed_official 0:51ac1d130fd4 14 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 0:51ac1d130fd4 15 * this list of conditions and the following disclaimer.
mbed_official 0:51ac1d130fd4 16 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 0:51ac1d130fd4 17 * this list of conditions and the following disclaimer in the documentation
mbed_official 0:51ac1d130fd4 18 * and/or other materials provided with the distribution.
mbed_official 0:51ac1d130fd4 19 * 3. The name of the author may not be used to endorse or promote products
mbed_official 0:51ac1d130fd4 20 * derived from this software without specific prior written permission.
mbed_official 0:51ac1d130fd4 21 *
mbed_official 0:51ac1d130fd4 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
mbed_official 0:51ac1d130fd4 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 0:51ac1d130fd4 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
mbed_official 0:51ac1d130fd4 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
mbed_official 0:51ac1d130fd4 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
mbed_official 0:51ac1d130fd4 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 0:51ac1d130fd4 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 0:51ac1d130fd4 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
mbed_official 0:51ac1d130fd4 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
mbed_official 0:51ac1d130fd4 31 * OF SUCH DAMAGE.
mbed_official 0:51ac1d130fd4 32 *
mbed_official 0:51ac1d130fd4 33 * This file is part of the lwIP TCP/IP stack.
mbed_official 0:51ac1d130fd4 34 *
mbed_official 0:51ac1d130fd4 35 * Author: Adam Dunkels <adam@sics.se>
mbed_official 0:51ac1d130fd4 36 *
mbed_official 0:51ac1d130fd4 37 */
mbed_official 0:51ac1d130fd4 38
mbed_official 0:51ac1d130fd4 39 #include "lwip/opt.h"
mbed_official 0:51ac1d130fd4 40
mbed_official 0:51ac1d130fd4 41 #if !NO_SYS /* don't build if not configured for use in lwipopts.h */
mbed_official 0:51ac1d130fd4 42
mbed_official 0:51ac1d130fd4 43 #include "lwip/sys.h"
mbed_official 0:51ac1d130fd4 44 #include "lwip/memp.h"
mbed_official 0:51ac1d130fd4 45 #include "lwip/mem.h"
mbed_official 0:51ac1d130fd4 46 #include "lwip/pbuf.h"
mbed_official 0:51ac1d130fd4 47 #include "lwip/tcpip.h"
mbed_official 0:51ac1d130fd4 48 #include "lwip/init.h"
mbed_official 0:51ac1d130fd4 49 #include "netif/etharp.h"
mbed_official 0:51ac1d130fd4 50 #include "netif/ppp_oe.h"
mbed_official 0:51ac1d130fd4 51
mbed_official 0:51ac1d130fd4 52 /* global variables */
mbed_official 0:51ac1d130fd4 53 static tcpip_init_done_fn tcpip_init_done;
mbed_official 0:51ac1d130fd4 54 static void *tcpip_init_done_arg;
mbed_official 0:51ac1d130fd4 55 static sys_mbox_t mbox;
mbed_official 0:51ac1d130fd4 56
mbed_official 0:51ac1d130fd4 57 #if LWIP_TCPIP_CORE_LOCKING
mbed_official 0:51ac1d130fd4 58 /** The global semaphore to lock the stack. */
mbed_official 0:51ac1d130fd4 59 sys_mutex_t lock_tcpip_core;
mbed_official 0:51ac1d130fd4 60 #endif /* LWIP_TCPIP_CORE_LOCKING */
mbed_official 0:51ac1d130fd4 61
mbed_official 0:51ac1d130fd4 62
mbed_official 0:51ac1d130fd4 63 /**
mbed_official 0:51ac1d130fd4 64 * The main lwIP thread. This thread has exclusive access to lwIP core functions
mbed_official 0:51ac1d130fd4 65 * (unless access to them is not locked). Other threads communicate with this
mbed_official 0:51ac1d130fd4 66 * thread using message boxes.
mbed_official 0:51ac1d130fd4 67 *
mbed_official 0:51ac1d130fd4 68 * It also starts all the timers to make sure they are running in the right
mbed_official 0:51ac1d130fd4 69 * thread context.
mbed_official 0:51ac1d130fd4 70 *
mbed_official 0:51ac1d130fd4 71 * @param arg unused argument
mbed_official 0:51ac1d130fd4 72 */
mbed_official 0:51ac1d130fd4 73 static void
mbed_official 0:51ac1d130fd4 74 tcpip_thread(void *arg)
mbed_official 0:51ac1d130fd4 75 {
mbed_official 0:51ac1d130fd4 76 struct tcpip_msg *msg;
mbed_official 0:51ac1d130fd4 77 LWIP_UNUSED_ARG(arg);
mbed_official 0:51ac1d130fd4 78
mbed_official 0:51ac1d130fd4 79 if (tcpip_init_done != NULL) {
mbed_official 0:51ac1d130fd4 80 tcpip_init_done(tcpip_init_done_arg);
mbed_official 0:51ac1d130fd4 81 }
mbed_official 0:51ac1d130fd4 82
mbed_official 0:51ac1d130fd4 83 LOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 84 while (1) { /* MAIN Loop */
mbed_official 0:51ac1d130fd4 85 UNLOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 86 LWIP_TCPIP_THREAD_ALIVE();
mbed_official 0:51ac1d130fd4 87 /* wait for a message, timeouts are processed while waiting */
mbed_official 0:51ac1d130fd4 88 sys_timeouts_mbox_fetch(&mbox, (void **)&msg);
mbed_official 0:51ac1d130fd4 89 LOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 90 switch (msg->type) {
mbed_official 0:51ac1d130fd4 91 #if LWIP_NETCONN
mbed_official 0:51ac1d130fd4 92 case TCPIP_MSG_API:
mbed_official 0:51ac1d130fd4 93 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg));
mbed_official 0:51ac1d130fd4 94 msg->msg.apimsg->function(&(msg->msg.apimsg->msg));
mbed_official 0:51ac1d130fd4 95 break;
mbed_official 0:51ac1d130fd4 96 #endif /* LWIP_NETCONN */
mbed_official 0:51ac1d130fd4 97
mbed_official 0:51ac1d130fd4 98 #if !LWIP_TCPIP_CORE_LOCKING_INPUT
mbed_official 0:51ac1d130fd4 99 case TCPIP_MSG_INPKT:
mbed_official 0:51ac1d130fd4 100 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: PACKET %p\n", (void *)msg));
mbed_official 0:51ac1d130fd4 101 #if LWIP_ETHERNET
mbed_official 0:51ac1d130fd4 102 if (msg->msg.inp.netif->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
mbed_official 0:51ac1d130fd4 103 ethernet_input(msg->msg.inp.p, msg->msg.inp.netif);
mbed_official 0:51ac1d130fd4 104 } else
mbed_official 0:51ac1d130fd4 105 #endif /* LWIP_ETHERNET */
mbed_official 0:51ac1d130fd4 106 {
mbed_official 0:51ac1d130fd4 107 ip_input(msg->msg.inp.p, msg->msg.inp.netif);
mbed_official 0:51ac1d130fd4 108 }
mbed_official 0:51ac1d130fd4 109 memp_free(MEMP_TCPIP_MSG_INPKT, msg);
mbed_official 0:51ac1d130fd4 110 break;
mbed_official 0:51ac1d130fd4 111 #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
mbed_official 0:51ac1d130fd4 112
mbed_official 0:51ac1d130fd4 113 #if LWIP_NETIF_API
mbed_official 0:51ac1d130fd4 114 case TCPIP_MSG_NETIFAPI:
mbed_official 0:51ac1d130fd4 115 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: Netif API message %p\n", (void *)msg));
mbed_official 0:51ac1d130fd4 116 msg->msg.netifapimsg->function(&(msg->msg.netifapimsg->msg));
mbed_official 0:51ac1d130fd4 117 break;
mbed_official 0:51ac1d130fd4 118 #endif /* LWIP_NETIF_API */
mbed_official 0:51ac1d130fd4 119
mbed_official 0:51ac1d130fd4 120 case TCPIP_MSG_CALLBACK:
mbed_official 0:51ac1d130fd4 121 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg));
mbed_official 0:51ac1d130fd4 122 msg->msg.cb.function(msg->msg.cb.ctx);
mbed_official 0:51ac1d130fd4 123 memp_free(MEMP_TCPIP_MSG_API, msg);
mbed_official 0:51ac1d130fd4 124 break;
mbed_official 0:51ac1d130fd4 125
mbed_official 0:51ac1d130fd4 126 #if LWIP_TCPIP_TIMEOUT
mbed_official 0:51ac1d130fd4 127 case TCPIP_MSG_TIMEOUT:
mbed_official 0:51ac1d130fd4 128 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: TIMEOUT %p\n", (void *)msg));
mbed_official 0:51ac1d130fd4 129 sys_timeout(msg->msg.tmo.msecs, msg->msg.tmo.h, msg->msg.tmo.arg);
mbed_official 0:51ac1d130fd4 130 memp_free(MEMP_TCPIP_MSG_API, msg);
mbed_official 0:51ac1d130fd4 131 break;
mbed_official 0:51ac1d130fd4 132 case TCPIP_MSG_UNTIMEOUT:
mbed_official 0:51ac1d130fd4 133 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: UNTIMEOUT %p\n", (void *)msg));
mbed_official 0:51ac1d130fd4 134 sys_untimeout(msg->msg.tmo.h, msg->msg.tmo.arg);
mbed_official 0:51ac1d130fd4 135 memp_free(MEMP_TCPIP_MSG_API, msg);
mbed_official 0:51ac1d130fd4 136 break;
mbed_official 0:51ac1d130fd4 137 #endif /* LWIP_TCPIP_TIMEOUT */
mbed_official 0:51ac1d130fd4 138
mbed_official 0:51ac1d130fd4 139 default:
mbed_official 0:51ac1d130fd4 140 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: invalid message: %d\n", msg->type));
mbed_official 0:51ac1d130fd4 141 LWIP_ASSERT("tcpip_thread: invalid message", 0);
mbed_official 0:51ac1d130fd4 142 break;
mbed_official 0:51ac1d130fd4 143 }
mbed_official 0:51ac1d130fd4 144 }
mbed_official 0:51ac1d130fd4 145 }
mbed_official 0:51ac1d130fd4 146
mbed_official 0:51ac1d130fd4 147 /**
mbed_official 0:51ac1d130fd4 148 * Pass a received packet to tcpip_thread for input processing
mbed_official 0:51ac1d130fd4 149 *
mbed_official 0:51ac1d130fd4 150 * @param p the received packet, p->payload pointing to the Ethernet header or
mbed_official 0:51ac1d130fd4 151 * to an IP header (if inp doesn't have NETIF_FLAG_ETHARP or
mbed_official 0:51ac1d130fd4 152 * NETIF_FLAG_ETHERNET flags)
mbed_official 0:51ac1d130fd4 153 * @param inp the network interface on which the packet was received
mbed_official 0:51ac1d130fd4 154 */
mbed_official 0:51ac1d130fd4 155 err_t
mbed_official 0:51ac1d130fd4 156 tcpip_input(struct pbuf *p, struct netif *inp)
mbed_official 0:51ac1d130fd4 157 {
mbed_official 0:51ac1d130fd4 158 #if LWIP_TCPIP_CORE_LOCKING_INPUT
mbed_official 0:51ac1d130fd4 159 err_t ret;
mbed_official 0:51ac1d130fd4 160 LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_input: PACKET %p/%p\n", (void *)p, (void *)inp));
mbed_official 0:51ac1d130fd4 161 LOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 162 #if LWIP_ETHERNET
mbed_official 0:51ac1d130fd4 163 if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
mbed_official 0:51ac1d130fd4 164 ret = ethernet_input(p, inp);
mbed_official 0:51ac1d130fd4 165 } else
mbed_official 0:51ac1d130fd4 166 #endif /* LWIP_ETHERNET */
mbed_official 0:51ac1d130fd4 167 {
mbed_official 0:51ac1d130fd4 168 ret = ip_input(p, inp);
mbed_official 0:51ac1d130fd4 169 }
mbed_official 0:51ac1d130fd4 170 UNLOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 171 return ret;
mbed_official 0:51ac1d130fd4 172 #else /* LWIP_TCPIP_CORE_LOCKING_INPUT */
mbed_official 0:51ac1d130fd4 173 struct tcpip_msg *msg;
mbed_official 0:51ac1d130fd4 174
mbed_official 0:51ac1d130fd4 175 if (sys_mbox_valid(&mbox)) {
mbed_official 0:51ac1d130fd4 176 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_INPKT);
mbed_official 0:51ac1d130fd4 177 if (msg == NULL) {
mbed_official 0:51ac1d130fd4 178 return ERR_MEM;
mbed_official 0:51ac1d130fd4 179 }
mbed_official 0:51ac1d130fd4 180
mbed_official 0:51ac1d130fd4 181 msg->type = TCPIP_MSG_INPKT;
mbed_official 0:51ac1d130fd4 182 msg->msg.inp.p = p;
mbed_official 0:51ac1d130fd4 183 msg->msg.inp.netif = inp;
mbed_official 0:51ac1d130fd4 184 if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
mbed_official 0:51ac1d130fd4 185 memp_free(MEMP_TCPIP_MSG_INPKT, msg);
mbed_official 0:51ac1d130fd4 186 return ERR_MEM;
mbed_official 0:51ac1d130fd4 187 }
mbed_official 0:51ac1d130fd4 188 return ERR_OK;
mbed_official 0:51ac1d130fd4 189 }
mbed_official 0:51ac1d130fd4 190 return ERR_VAL;
mbed_official 0:51ac1d130fd4 191 #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
mbed_official 0:51ac1d130fd4 192 }
mbed_official 0:51ac1d130fd4 193
mbed_official 0:51ac1d130fd4 194 /**
mbed_official 0:51ac1d130fd4 195 * Call a specific function in the thread context of
mbed_official 0:51ac1d130fd4 196 * tcpip_thread for easy access synchronization.
mbed_official 0:51ac1d130fd4 197 * A function called in that way may access lwIP core code
mbed_official 0:51ac1d130fd4 198 * without fearing concurrent access.
mbed_official 0:51ac1d130fd4 199 *
mbed_official 0:51ac1d130fd4 200 * @param f the function to call
mbed_official 0:51ac1d130fd4 201 * @param ctx parameter passed to f
mbed_official 0:51ac1d130fd4 202 * @param block 1 to block until the request is posted, 0 to non-blocking mode
mbed_official 0:51ac1d130fd4 203 * @return ERR_OK if the function was called, another err_t if not
mbed_official 0:51ac1d130fd4 204 */
mbed_official 0:51ac1d130fd4 205 err_t
mbed_official 0:51ac1d130fd4 206 tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block)
mbed_official 0:51ac1d130fd4 207 {
mbed_official 0:51ac1d130fd4 208 struct tcpip_msg *msg;
mbed_official 0:51ac1d130fd4 209
mbed_official 0:51ac1d130fd4 210 if (sys_mbox_valid(&mbox)) {
mbed_official 0:51ac1d130fd4 211 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
mbed_official 0:51ac1d130fd4 212 if (msg == NULL) {
mbed_official 0:51ac1d130fd4 213 return ERR_MEM;
mbed_official 0:51ac1d130fd4 214 }
mbed_official 0:51ac1d130fd4 215
mbed_official 0:51ac1d130fd4 216 msg->type = TCPIP_MSG_CALLBACK;
mbed_official 0:51ac1d130fd4 217 msg->msg.cb.function = function;
mbed_official 0:51ac1d130fd4 218 msg->msg.cb.ctx = ctx;
mbed_official 0:51ac1d130fd4 219 if (block) {
mbed_official 0:51ac1d130fd4 220 sys_mbox_post(&mbox, msg);
mbed_official 0:51ac1d130fd4 221 } else {
mbed_official 0:51ac1d130fd4 222 if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
mbed_official 0:51ac1d130fd4 223 memp_free(MEMP_TCPIP_MSG_API, msg);
mbed_official 0:51ac1d130fd4 224 return ERR_MEM;
mbed_official 0:51ac1d130fd4 225 }
mbed_official 0:51ac1d130fd4 226 }
mbed_official 0:51ac1d130fd4 227 return ERR_OK;
mbed_official 0:51ac1d130fd4 228 }
mbed_official 0:51ac1d130fd4 229 return ERR_VAL;
mbed_official 0:51ac1d130fd4 230 }
mbed_official 0:51ac1d130fd4 231
mbed_official 0:51ac1d130fd4 232 #if LWIP_TCPIP_TIMEOUT
mbed_official 0:51ac1d130fd4 233 /**
mbed_official 0:51ac1d130fd4 234 * call sys_timeout in tcpip_thread
mbed_official 0:51ac1d130fd4 235 *
mbed_official 0:51ac1d130fd4 236 * @param msec time in milliseconds for timeout
mbed_official 0:51ac1d130fd4 237 * @param h function to be called on timeout
mbed_official 0:51ac1d130fd4 238 * @param arg argument to pass to timeout function h
mbed_official 0:51ac1d130fd4 239 * @return ERR_MEM on memory error, ERR_OK otherwise
mbed_official 0:51ac1d130fd4 240 */
mbed_official 0:51ac1d130fd4 241 err_t
mbed_official 0:51ac1d130fd4 242 tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg)
mbed_official 0:51ac1d130fd4 243 {
mbed_official 0:51ac1d130fd4 244 struct tcpip_msg *msg;
mbed_official 0:51ac1d130fd4 245
mbed_official 0:51ac1d130fd4 246 if (sys_mbox_valid(&mbox)) {
mbed_official 0:51ac1d130fd4 247 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
mbed_official 0:51ac1d130fd4 248 if (msg == NULL) {
mbed_official 0:51ac1d130fd4 249 return ERR_MEM;
mbed_official 0:51ac1d130fd4 250 }
mbed_official 0:51ac1d130fd4 251
mbed_official 0:51ac1d130fd4 252 msg->type = TCPIP_MSG_TIMEOUT;
mbed_official 0:51ac1d130fd4 253 msg->msg.tmo.msecs = msecs;
mbed_official 0:51ac1d130fd4 254 msg->msg.tmo.h = h;
mbed_official 0:51ac1d130fd4 255 msg->msg.tmo.arg = arg;
mbed_official 0:51ac1d130fd4 256 sys_mbox_post(&mbox, msg);
mbed_official 0:51ac1d130fd4 257 return ERR_OK;
mbed_official 0:51ac1d130fd4 258 }
mbed_official 0:51ac1d130fd4 259 return ERR_VAL;
mbed_official 0:51ac1d130fd4 260 }
mbed_official 0:51ac1d130fd4 261
mbed_official 0:51ac1d130fd4 262 /**
mbed_official 0:51ac1d130fd4 263 * call sys_untimeout in tcpip_thread
mbed_official 0:51ac1d130fd4 264 *
mbed_official 0:51ac1d130fd4 265 * @param msec time in milliseconds for timeout
mbed_official 0:51ac1d130fd4 266 * @param h function to be called on timeout
mbed_official 0:51ac1d130fd4 267 * @param arg argument to pass to timeout function h
mbed_official 0:51ac1d130fd4 268 * @return ERR_MEM on memory error, ERR_OK otherwise
mbed_official 0:51ac1d130fd4 269 */
mbed_official 0:51ac1d130fd4 270 err_t
mbed_official 0:51ac1d130fd4 271 tcpip_untimeout(sys_timeout_handler h, void *arg)
mbed_official 0:51ac1d130fd4 272 {
mbed_official 0:51ac1d130fd4 273 struct tcpip_msg *msg;
mbed_official 0:51ac1d130fd4 274
mbed_official 0:51ac1d130fd4 275 if (sys_mbox_valid(&mbox)) {
mbed_official 0:51ac1d130fd4 276 msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
mbed_official 0:51ac1d130fd4 277 if (msg == NULL) {
mbed_official 0:51ac1d130fd4 278 return ERR_MEM;
mbed_official 0:51ac1d130fd4 279 }
mbed_official 0:51ac1d130fd4 280
mbed_official 0:51ac1d130fd4 281 msg->type = TCPIP_MSG_UNTIMEOUT;
mbed_official 0:51ac1d130fd4 282 msg->msg.tmo.h = h;
mbed_official 0:51ac1d130fd4 283 msg->msg.tmo.arg = arg;
mbed_official 0:51ac1d130fd4 284 sys_mbox_post(&mbox, msg);
mbed_official 0:51ac1d130fd4 285 return ERR_OK;
mbed_official 0:51ac1d130fd4 286 }
mbed_official 0:51ac1d130fd4 287 return ERR_VAL;
mbed_official 0:51ac1d130fd4 288 }
mbed_official 0:51ac1d130fd4 289 #endif /* LWIP_TCPIP_TIMEOUT */
mbed_official 0:51ac1d130fd4 290
mbed_official 0:51ac1d130fd4 291 #if LWIP_NETCONN
mbed_official 0:51ac1d130fd4 292 /**
mbed_official 0:51ac1d130fd4 293 * Call the lower part of a netconn_* function
mbed_official 0:51ac1d130fd4 294 * This function is then running in the thread context
mbed_official 0:51ac1d130fd4 295 * of tcpip_thread and has exclusive access to lwIP core code.
mbed_official 0:51ac1d130fd4 296 *
mbed_official 0:51ac1d130fd4 297 * @param apimsg a struct containing the function to call and its parameters
mbed_official 0:51ac1d130fd4 298 * @return ERR_OK if the function was called, another err_t if not
mbed_official 0:51ac1d130fd4 299 */
mbed_official 0:51ac1d130fd4 300 err_t
mbed_official 0:51ac1d130fd4 301 tcpip_apimsg(struct api_msg *apimsg)
mbed_official 0:51ac1d130fd4 302 {
mbed_official 0:51ac1d130fd4 303 struct tcpip_msg msg;
mbed_official 0:51ac1d130fd4 304 #ifdef LWIP_DEBUG
mbed_official 0:51ac1d130fd4 305 /* catch functions that don't set err */
mbed_official 0:51ac1d130fd4 306 apimsg->msg.err = ERR_VAL;
mbed_official 0:51ac1d130fd4 307 #endif
mbed_official 0:51ac1d130fd4 308
mbed_official 0:51ac1d130fd4 309 if (sys_mbox_valid(&mbox)) {
mbed_official 0:51ac1d130fd4 310 msg.type = TCPIP_MSG_API;
mbed_official 0:51ac1d130fd4 311 msg.msg.apimsg = apimsg;
mbed_official 0:51ac1d130fd4 312 sys_mbox_post(&mbox, &msg);
mbed_official 0:51ac1d130fd4 313 sys_arch_sem_wait(&apimsg->msg.conn->op_completed, 0);
mbed_official 0:51ac1d130fd4 314 return apimsg->msg.err;
mbed_official 0:51ac1d130fd4 315 }
mbed_official 0:51ac1d130fd4 316 return ERR_VAL;
mbed_official 0:51ac1d130fd4 317 }
mbed_official 0:51ac1d130fd4 318
mbed_official 0:51ac1d130fd4 319 #if LWIP_TCPIP_CORE_LOCKING
mbed_official 0:51ac1d130fd4 320 /**
mbed_official 0:51ac1d130fd4 321 * Call the lower part of a netconn_* function
mbed_official 0:51ac1d130fd4 322 * This function has exclusive access to lwIP core code by locking it
mbed_official 0:51ac1d130fd4 323 * before the function is called.
mbed_official 0:51ac1d130fd4 324 *
mbed_official 0:51ac1d130fd4 325 * @param apimsg a struct containing the function to call and its parameters
mbed_official 0:51ac1d130fd4 326 * @return ERR_OK (only for compatibility fo tcpip_apimsg())
mbed_official 0:51ac1d130fd4 327 */
mbed_official 0:51ac1d130fd4 328 err_t
mbed_official 0:51ac1d130fd4 329 tcpip_apimsg_lock(struct api_msg *apimsg)
mbed_official 0:51ac1d130fd4 330 {
mbed_official 0:51ac1d130fd4 331 #ifdef LWIP_DEBUG
mbed_official 0:51ac1d130fd4 332 /* catch functions that don't set err */
mbed_official 0:51ac1d130fd4 333 apimsg->msg.err = ERR_VAL;
mbed_official 0:51ac1d130fd4 334 #endif
mbed_official 0:51ac1d130fd4 335
mbed_official 0:51ac1d130fd4 336 LOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 337 apimsg->function(&(apimsg->msg));
mbed_official 0:51ac1d130fd4 338 UNLOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 339 return apimsg->msg.err;
mbed_official 0:51ac1d130fd4 340
mbed_official 0:51ac1d130fd4 341 }
mbed_official 0:51ac1d130fd4 342 #endif /* LWIP_TCPIP_CORE_LOCKING */
mbed_official 0:51ac1d130fd4 343 #endif /* LWIP_NETCONN */
mbed_official 0:51ac1d130fd4 344
mbed_official 0:51ac1d130fd4 345 #if LWIP_NETIF_API
mbed_official 0:51ac1d130fd4 346 #if !LWIP_TCPIP_CORE_LOCKING
mbed_official 0:51ac1d130fd4 347 /**
mbed_official 0:51ac1d130fd4 348 * Much like tcpip_apimsg, but calls the lower part of a netifapi_*
mbed_official 0:51ac1d130fd4 349 * function.
mbed_official 0:51ac1d130fd4 350 *
mbed_official 0:51ac1d130fd4 351 * @param netifapimsg a struct containing the function to call and its parameters
mbed_official 0:51ac1d130fd4 352 * @return error code given back by the function that was called
mbed_official 0:51ac1d130fd4 353 */
mbed_official 0:51ac1d130fd4 354 err_t
mbed_official 0:51ac1d130fd4 355 tcpip_netifapi(struct netifapi_msg* netifapimsg)
mbed_official 0:51ac1d130fd4 356 {
mbed_official 0:51ac1d130fd4 357 struct tcpip_msg msg;
mbed_official 0:51ac1d130fd4 358
mbed_official 0:51ac1d130fd4 359 if (sys_mbox_valid(&mbox)) {
mbed_official 0:51ac1d130fd4 360 err_t err = sys_sem_new(&netifapimsg->msg.sem, 0);
mbed_official 0:51ac1d130fd4 361 if (err != ERR_OK) {
mbed_official 0:51ac1d130fd4 362 netifapimsg->msg.err = err;
mbed_official 0:51ac1d130fd4 363 return err;
mbed_official 0:51ac1d130fd4 364 }
mbed_official 0:51ac1d130fd4 365
mbed_official 0:51ac1d130fd4 366 msg.type = TCPIP_MSG_NETIFAPI;
mbed_official 0:51ac1d130fd4 367 msg.msg.netifapimsg = netifapimsg;
mbed_official 0:51ac1d130fd4 368 sys_mbox_post(&mbox, &msg);
mbed_official 0:51ac1d130fd4 369 sys_sem_wait(&netifapimsg->msg.sem);
mbed_official 0:51ac1d130fd4 370 sys_sem_free(&netifapimsg->msg.sem);
mbed_official 0:51ac1d130fd4 371 return netifapimsg->msg.err;
mbed_official 0:51ac1d130fd4 372 }
mbed_official 0:51ac1d130fd4 373 return ERR_VAL;
mbed_official 0:51ac1d130fd4 374 }
mbed_official 0:51ac1d130fd4 375 #else /* !LWIP_TCPIP_CORE_LOCKING */
mbed_official 0:51ac1d130fd4 376 /**
mbed_official 0:51ac1d130fd4 377 * Call the lower part of a netifapi_* function
mbed_official 0:51ac1d130fd4 378 * This function has exclusive access to lwIP core code by locking it
mbed_official 0:51ac1d130fd4 379 * before the function is called.
mbed_official 0:51ac1d130fd4 380 *
mbed_official 0:51ac1d130fd4 381 * @param netifapimsg a struct containing the function to call and its parameters
mbed_official 0:51ac1d130fd4 382 * @return ERR_OK (only for compatibility fo tcpip_netifapi())
mbed_official 0:51ac1d130fd4 383 */
mbed_official 0:51ac1d130fd4 384 err_t
mbed_official 0:51ac1d130fd4 385 tcpip_netifapi_lock(struct netifapi_msg* netifapimsg)
mbed_official 0:51ac1d130fd4 386 {
mbed_official 0:51ac1d130fd4 387 LOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 388 netifapimsg->function(&(netifapimsg->msg));
mbed_official 0:51ac1d130fd4 389 UNLOCK_TCPIP_CORE();
mbed_official 0:51ac1d130fd4 390 return netifapimsg->msg.err;
mbed_official 0:51ac1d130fd4 391 }
mbed_official 0:51ac1d130fd4 392 #endif /* !LWIP_TCPIP_CORE_LOCKING */
mbed_official 0:51ac1d130fd4 393 #endif /* LWIP_NETIF_API */
mbed_official 0:51ac1d130fd4 394
mbed_official 0:51ac1d130fd4 395 /**
mbed_official 0:51ac1d130fd4 396 * Initialize this module:
mbed_official 0:51ac1d130fd4 397 * - initialize all sub modules
mbed_official 0:51ac1d130fd4 398 * - start the tcpip_thread
mbed_official 0:51ac1d130fd4 399 *
mbed_official 0:51ac1d130fd4 400 * @param initfunc a function to call when tcpip_thread is running and finished initializing
mbed_official 0:51ac1d130fd4 401 * @param arg argument to pass to initfunc
mbed_official 0:51ac1d130fd4 402 */
mbed_official 0:51ac1d130fd4 403 void
mbed_official 0:51ac1d130fd4 404 tcpip_init(tcpip_init_done_fn initfunc, void *arg)
mbed_official 0:51ac1d130fd4 405 {
mbed_official 0:51ac1d130fd4 406 lwip_init();
mbed_official 0:51ac1d130fd4 407
mbed_official 0:51ac1d130fd4 408 tcpip_init_done = initfunc;
mbed_official 0:51ac1d130fd4 409 tcpip_init_done_arg = arg;
mbed_official 0:51ac1d130fd4 410 if(sys_mbox_new(&mbox, TCPIP_MBOX_SIZE) != ERR_OK) {
mbed_official 0:51ac1d130fd4 411 LWIP_ASSERT("failed to create tcpip_thread mbox", 0);
mbed_official 0:51ac1d130fd4 412 }
mbed_official 0:51ac1d130fd4 413 #if LWIP_TCPIP_CORE_LOCKING
mbed_official 0:51ac1d130fd4 414 if(sys_mutex_new(&lock_tcpip_core) != ERR_OK) {
mbed_official 0:51ac1d130fd4 415 LWIP_ASSERT("failed to create lock_tcpip_core", 0);
mbed_official 0:51ac1d130fd4 416 }
mbed_official 0:51ac1d130fd4 417 #endif /* LWIP_TCPIP_CORE_LOCKING */
mbed_official 0:51ac1d130fd4 418
mbed_official 0:51ac1d130fd4 419 sys_thread_new(TCPIP_THREAD_NAME, tcpip_thread, NULL, TCPIP_THREAD_STACKSIZE, TCPIP_THREAD_PRIO);
mbed_official 0:51ac1d130fd4 420 }
mbed_official 0:51ac1d130fd4 421
mbed_official 0:51ac1d130fd4 422 /**
mbed_official 0:51ac1d130fd4 423 * Simple callback function used with tcpip_callback to free a pbuf
mbed_official 0:51ac1d130fd4 424 * (pbuf_free has a wrong signature for tcpip_callback)
mbed_official 0:51ac1d130fd4 425 *
mbed_official 0:51ac1d130fd4 426 * @param p The pbuf (chain) to be dereferenced.
mbed_official 0:51ac1d130fd4 427 */
mbed_official 0:51ac1d130fd4 428 static void
mbed_official 0:51ac1d130fd4 429 pbuf_free_int(void *p)
mbed_official 0:51ac1d130fd4 430 {
mbed_official 0:51ac1d130fd4 431 struct pbuf *q = (struct pbuf *)p;
mbed_official 0:51ac1d130fd4 432 pbuf_free(q);
mbed_official 0:51ac1d130fd4 433 }
mbed_official 0:51ac1d130fd4 434
mbed_official 0:51ac1d130fd4 435 /**
mbed_official 0:51ac1d130fd4 436 * A simple wrapper function that allows you to free a pbuf from interrupt context.
mbed_official 0:51ac1d130fd4 437 *
mbed_official 0:51ac1d130fd4 438 * @param p The pbuf (chain) to be dereferenced.
mbed_official 0:51ac1d130fd4 439 * @return ERR_OK if callback could be enqueued, an err_t if not
mbed_official 0:51ac1d130fd4 440 */
mbed_official 0:51ac1d130fd4 441 err_t
mbed_official 0:51ac1d130fd4 442 pbuf_free_callback(struct pbuf *p)
mbed_official 0:51ac1d130fd4 443 {
mbed_official 0:51ac1d130fd4 444 return tcpip_callback_with_block(pbuf_free_int, p, 0);
mbed_official 0:51ac1d130fd4 445 }
mbed_official 0:51ac1d130fd4 446
mbed_official 0:51ac1d130fd4 447 /**
mbed_official 0:51ac1d130fd4 448 * A simple wrapper function that allows you to free heap memory from
mbed_official 0:51ac1d130fd4 449 * interrupt context.
mbed_official 0:51ac1d130fd4 450 *
mbed_official 0:51ac1d130fd4 451 * @param m the heap memory to free
mbed_official 0:51ac1d130fd4 452 * @return ERR_OK if callback could be enqueued, an err_t if not
mbed_official 0:51ac1d130fd4 453 */
mbed_official 0:51ac1d130fd4 454 err_t
mbed_official 0:51ac1d130fd4 455 mem_free_callback(void *m)
mbed_official 0:51ac1d130fd4 456 {
mbed_official 0:51ac1d130fd4 457 return tcpip_callback_with_block(mem_free, m, 0);
mbed_official 0:51ac1d130fd4 458 }
mbed_official 0:51ac1d130fd4 459
mbed_official 0:51ac1d130fd4 460 #endif /* !NO_SYS */