1 | /**
|
---|
2 | * @file
|
---|
3 | * Sequential API Main thread module
|
---|
4 | *
|
---|
5 | */
|
---|
6 |
|
---|
7 | /*
|
---|
8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
|
---|
9 | * All rights reserved.
|
---|
10 | *
|
---|
11 | * Redistribution and use in source and binary forms, with or without modification,
|
---|
12 | * are permitted provided that the following conditions are met:
|
---|
13 | *
|
---|
14 | * 1. Redistributions of source code must retain the above copyright notice,
|
---|
15 | * this list of conditions and the following disclaimer.
|
---|
16 | * 2. Redistributions in binary form must reproduce the above copyright notice,
|
---|
17 | * this list of conditions and the following disclaimer in the documentation
|
---|
18 | * and/or other materials provided with the distribution.
|
---|
19 | * 3. The name of the author may not be used to endorse or promote products
|
---|
20 | * derived from this software without specific prior written permission.
|
---|
21 | *
|
---|
22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
---|
23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
---|
24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
---|
25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
---|
26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
---|
27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
---|
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
---|
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
---|
30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
---|
31 | * OF SUCH DAMAGE.
|
---|
32 | *
|
---|
33 | * This file is part of the lwIP TCP/IP stack.
|
---|
34 | *
|
---|
35 | * Author: Adam Dunkels <adam@sics.se>
|
---|
36 | *
|
---|
37 | */
|
---|
38 |
|
---|
39 | #include "lwip/opt.h"
|
---|
40 |
|
---|
41 | #if !NO_SYS /* don't build if not configured for use in lwipopts.h */
|
---|
42 |
|
---|
43 | #include "lwip/sys.h"
|
---|
44 | #include "lwip/memp.h"
|
---|
45 | #include "lwip/mem.h"
|
---|
46 | #include "lwip/pbuf.h"
|
---|
47 | #include "lwip/tcpip.h"
|
---|
48 | #include "lwip/init.h"
|
---|
49 | #include "netif/etharp.h"
|
---|
50 | #include "netif/ppp_oe.h"
|
---|
51 |
|
---|
52 | /* global variables */
|
---|
53 | static tcpip_init_done_fn tcpip_init_done;
|
---|
54 | static void *tcpip_init_done_arg;
|
---|
55 | static sys_mbox_t mbox;
|
---|
56 |
|
---|
57 | #if LWIP_TCPIP_CORE_LOCKING
|
---|
58 | /** The global semaphore to lock the stack. */
|
---|
59 | sys_mutex_t lock_tcpip_core;
|
---|
60 | #endif /* LWIP_TCPIP_CORE_LOCKING */
|
---|
61 |
|
---|
62 |
|
---|
63 | /**
|
---|
64 | * The main lwIP thread. This thread has exclusive access to lwIP core functions
|
---|
65 | * (unless access to them is not locked). Other threads communicate with this
|
---|
66 | * thread using message boxes.
|
---|
67 | *
|
---|
68 | * It also starts all the timers to make sure they are running in the right
|
---|
69 | * thread context.
|
---|
70 | *
|
---|
71 | * @param arg unused argument
|
---|
72 | */
|
---|
73 | static void
|
---|
74 | tcpip_thread(void *arg)
|
---|
75 | {
|
---|
76 | struct tcpip_msg *msg;
|
---|
77 | LWIP_UNUSED_ARG(arg);
|
---|
78 |
|
---|
79 | if (tcpip_init_done != NULL) {
|
---|
80 | tcpip_init_done(tcpip_init_done_arg);
|
---|
81 | }
|
---|
82 |
|
---|
83 | LOCK_TCPIP_CORE();
|
---|
84 | while (1) { /* MAIN Loop */
|
---|
85 | UNLOCK_TCPIP_CORE();
|
---|
86 | LWIP_TCPIP_THREAD_ALIVE();
|
---|
87 | /* wait for a message, timeouts are processed while waiting */
|
---|
88 | sys_timeouts_mbox_fetch(&mbox, (void **)&msg);
|
---|
89 | LOCK_TCPIP_CORE();
|
---|
90 | switch (msg->type) {
|
---|
91 | #if LWIP_NETCONN
|
---|
92 | case TCPIP_MSG_API:
|
---|
93 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: API message %p\n", (void *)msg));
|
---|
94 | msg->msg.apimsg->function(&(msg->msg.apimsg->msg));
|
---|
95 | break;
|
---|
96 | #endif /* LWIP_NETCONN */
|
---|
97 |
|
---|
98 | #if !LWIP_TCPIP_CORE_LOCKING_INPUT
|
---|
99 | case TCPIP_MSG_INPKT:
|
---|
100 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: PACKET %p\n", (void *)msg));
|
---|
101 | #if LWIP_ETHERNET
|
---|
102 | if (msg->msg.inp.netif->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
|
---|
103 | ethernet_input(msg->msg.inp.p, msg->msg.inp.netif);
|
---|
104 | } else
|
---|
105 | #endif /* LWIP_ETHERNET */
|
---|
106 | {
|
---|
107 | ip_input(msg->msg.inp.p, msg->msg.inp.netif);
|
---|
108 | }
|
---|
109 | memp_free(MEMP_TCPIP_MSG_INPKT, msg);
|
---|
110 | break;
|
---|
111 | #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
|
---|
112 |
|
---|
113 | #if LWIP_NETIF_API
|
---|
114 | case TCPIP_MSG_NETIFAPI:
|
---|
115 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: Netif API message %p\n", (void *)msg));
|
---|
116 | msg->msg.netifapimsg->function(&(msg->msg.netifapimsg->msg));
|
---|
117 | break;
|
---|
118 | #endif /* LWIP_NETIF_API */
|
---|
119 |
|
---|
120 | #if LWIP_TCPIP_TIMEOUT
|
---|
121 | case TCPIP_MSG_TIMEOUT:
|
---|
122 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: TIMEOUT %p\n", (void *)msg));
|
---|
123 | sys_timeout(msg->msg.tmo.msecs, msg->msg.tmo.h, msg->msg.tmo.arg);
|
---|
124 | memp_free(MEMP_TCPIP_MSG_API, msg);
|
---|
125 | break;
|
---|
126 | case TCPIP_MSG_UNTIMEOUT:
|
---|
127 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: UNTIMEOUT %p\n", (void *)msg));
|
---|
128 | sys_untimeout(msg->msg.tmo.h, msg->msg.tmo.arg);
|
---|
129 | memp_free(MEMP_TCPIP_MSG_API, msg);
|
---|
130 | break;
|
---|
131 | #endif /* LWIP_TCPIP_TIMEOUT */
|
---|
132 |
|
---|
133 | case TCPIP_MSG_CALLBACK:
|
---|
134 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK %p\n", (void *)msg));
|
---|
135 | msg->msg.cb.function(msg->msg.cb.ctx);
|
---|
136 | memp_free(MEMP_TCPIP_MSG_API, msg);
|
---|
137 | break;
|
---|
138 |
|
---|
139 | case TCPIP_MSG_CALLBACK_STATIC:
|
---|
140 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: CALLBACK_STATIC %p\n", (void *)msg));
|
---|
141 | msg->msg.cb.function(msg->msg.cb.ctx);
|
---|
142 | break;
|
---|
143 |
|
---|
144 | default:
|
---|
145 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: invalid message: %d\n", msg->type));
|
---|
146 | LWIP_ASSERT("tcpip_thread: invalid message", 0);
|
---|
147 | break;
|
---|
148 | }
|
---|
149 | }
|
---|
150 | }
|
---|
151 |
|
---|
152 | /**
|
---|
153 | * Pass a received packet to tcpip_thread for input processing
|
---|
154 | *
|
---|
155 | * @param p the received packet, p->payload pointing to the Ethernet header or
|
---|
156 | * to an IP header (if inp doesn't have NETIF_FLAG_ETHARP or
|
---|
157 | * NETIF_FLAG_ETHERNET flags)
|
---|
158 | * @param inp the network interface on which the packet was received
|
---|
159 | */
|
---|
160 | err_t
|
---|
161 | tcpip_input(struct pbuf *p, struct netif *inp)
|
---|
162 | {
|
---|
163 | #if LWIP_TCPIP_CORE_LOCKING_INPUT
|
---|
164 | err_t ret;
|
---|
165 | LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_input: PACKET %p/%p\n", (void *)p, (void *)inp));
|
---|
166 | LOCK_TCPIP_CORE();
|
---|
167 | #if LWIP_ETHERNET
|
---|
168 | if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
|
---|
169 | ret = ethernet_input(p, inp);
|
---|
170 | } else
|
---|
171 | #endif /* LWIP_ETHERNET */
|
---|
172 | {
|
---|
173 | ret = ip_input(p, inp);
|
---|
174 | }
|
---|
175 | UNLOCK_TCPIP_CORE();
|
---|
176 | return ret;
|
---|
177 | #else /* LWIP_TCPIP_CORE_LOCKING_INPUT */
|
---|
178 | struct tcpip_msg *msg;
|
---|
179 |
|
---|
180 | if (!sys_mbox_valid(&mbox)) {
|
---|
181 | return ERR_VAL;
|
---|
182 | }
|
---|
183 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_INPKT);
|
---|
184 | if (msg == NULL) {
|
---|
185 | return ERR_MEM;
|
---|
186 | }
|
---|
187 |
|
---|
188 | msg->type = TCPIP_MSG_INPKT;
|
---|
189 | msg->msg.inp.p = p;
|
---|
190 | msg->msg.inp.netif = inp;
|
---|
191 | if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
|
---|
192 | memp_free(MEMP_TCPIP_MSG_INPKT, msg);
|
---|
193 | return ERR_MEM;
|
---|
194 | }
|
---|
195 | return ERR_OK;
|
---|
196 | #endif /* LWIP_TCPIP_CORE_LOCKING_INPUT */
|
---|
197 | }
|
---|
198 |
|
---|
199 | /**
|
---|
200 | * Call a specific function in the thread context of
|
---|
201 | * tcpip_thread for easy access synchronization.
|
---|
202 | * A function called in that way may access lwIP core code
|
---|
203 | * without fearing concurrent access.
|
---|
204 | *
|
---|
205 | * @param f the function to call
|
---|
206 | * @param ctx parameter passed to f
|
---|
207 | * @param block 1 to block until the request is posted, 0 to non-blocking mode
|
---|
208 | * @return ERR_OK if the function was called, another err_t if not
|
---|
209 | */
|
---|
210 | err_t
|
---|
211 | tcpip_callback_with_block(tcpip_callback_fn function, void *ctx, u8_t block)
|
---|
212 | {
|
---|
213 | struct tcpip_msg *msg;
|
---|
214 |
|
---|
215 | if (sys_mbox_valid(&mbox)) {
|
---|
216 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
|
---|
217 | if (msg == NULL) {
|
---|
218 | return ERR_MEM;
|
---|
219 | }
|
---|
220 |
|
---|
221 | msg->type = TCPIP_MSG_CALLBACK;
|
---|
222 | msg->msg.cb.function = function;
|
---|
223 | msg->msg.cb.ctx = ctx;
|
---|
224 | if (block) {
|
---|
225 | sys_mbox_post(&mbox, msg);
|
---|
226 | } else {
|
---|
227 | if (sys_mbox_trypost(&mbox, msg) != ERR_OK) {
|
---|
228 | memp_free(MEMP_TCPIP_MSG_API, msg);
|
---|
229 | return ERR_MEM;
|
---|
230 | }
|
---|
231 | }
|
---|
232 | return ERR_OK;
|
---|
233 | }
|
---|
234 | return ERR_VAL;
|
---|
235 | }
|
---|
236 |
|
---|
237 | #if LWIP_TCPIP_TIMEOUT
|
---|
238 | /**
|
---|
239 | * call sys_timeout in tcpip_thread
|
---|
240 | *
|
---|
241 | * @param msec time in milliseconds for timeout
|
---|
242 | * @param h function to be called on timeout
|
---|
243 | * @param arg argument to pass to timeout function h
|
---|
244 | * @return ERR_MEM on memory error, ERR_OK otherwise
|
---|
245 | */
|
---|
246 | err_t
|
---|
247 | tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg)
|
---|
248 | {
|
---|
249 | struct tcpip_msg *msg;
|
---|
250 |
|
---|
251 | if (sys_mbox_valid(&mbox)) {
|
---|
252 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
|
---|
253 | if (msg == NULL) {
|
---|
254 | return ERR_MEM;
|
---|
255 | }
|
---|
256 |
|
---|
257 | msg->type = TCPIP_MSG_TIMEOUT;
|
---|
258 | msg->msg.tmo.msecs = msecs;
|
---|
259 | msg->msg.tmo.h = h;
|
---|
260 | msg->msg.tmo.arg = arg;
|
---|
261 | sys_mbox_post(&mbox, msg);
|
---|
262 | return ERR_OK;
|
---|
263 | }
|
---|
264 | return ERR_VAL;
|
---|
265 | }
|
---|
266 |
|
---|
267 | /**
|
---|
268 | * call sys_untimeout in tcpip_thread
|
---|
269 | *
|
---|
270 | * @param msec time in milliseconds for timeout
|
---|
271 | * @param h function to be called on timeout
|
---|
272 | * @param arg argument to pass to timeout function h
|
---|
273 | * @return ERR_MEM on memory error, ERR_OK otherwise
|
---|
274 | */
|
---|
275 | err_t
|
---|
276 | tcpip_untimeout(sys_timeout_handler h, void *arg)
|
---|
277 | {
|
---|
278 | struct tcpip_msg *msg;
|
---|
279 |
|
---|
280 | if (sys_mbox_valid(&mbox)) {
|
---|
281 | msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
|
---|
282 | if (msg == NULL) {
|
---|
283 | return ERR_MEM;
|
---|
284 | }
|
---|
285 |
|
---|
286 | msg->type = TCPIP_MSG_UNTIMEOUT;
|
---|
287 | msg->msg.tmo.h = h;
|
---|
288 | msg->msg.tmo.arg = arg;
|
---|
289 | sys_mbox_post(&mbox, msg);
|
---|
290 | return ERR_OK;
|
---|
291 | }
|
---|
292 | return ERR_VAL;
|
---|
293 | }
|
---|
294 | #endif /* LWIP_TCPIP_TIMEOUT */
|
---|
295 |
|
---|
296 | #if LWIP_NETCONN
|
---|
297 | /**
|
---|
298 | * Call the lower part of a netconn_* function
|
---|
299 | * This function is then running in the thread context
|
---|
300 | * of tcpip_thread and has exclusive access to lwIP core code.
|
---|
301 | *
|
---|
302 | * @param apimsg a struct containing the function to call and its parameters
|
---|
303 | * @return ERR_OK if the function was called, another err_t if not
|
---|
304 | */
|
---|
305 | err_t
|
---|
306 | tcpip_apimsg(struct api_msg *apimsg)
|
---|
307 | {
|
---|
308 | struct tcpip_msg msg;
|
---|
309 | #ifdef LWIP_DEBUG
|
---|
310 | /* catch functions that don't set err */
|
---|
311 | apimsg->msg.err = ERR_VAL;
|
---|
312 | #endif
|
---|
313 |
|
---|
314 | if (sys_mbox_valid(&mbox)) {
|
---|
315 | msg.type = TCPIP_MSG_API;
|
---|
316 | msg.msg.apimsg = apimsg;
|
---|
317 | sys_mbox_post(&mbox, &msg);
|
---|
318 | sys_arch_sem_wait(&apimsg->msg.conn->op_completed, 0);
|
---|
319 | return apimsg->msg.err;
|
---|
320 | }
|
---|
321 | return ERR_VAL;
|
---|
322 | }
|
---|
323 |
|
---|
324 | #if LWIP_TCPIP_CORE_LOCKING
|
---|
325 | /**
|
---|
326 | * Call the lower part of a netconn_* function
|
---|
327 | * This function has exclusive access to lwIP core code by locking it
|
---|
328 | * before the function is called.
|
---|
329 | *
|
---|
330 | * @param apimsg a struct containing the function to call and its parameters
|
---|
331 | * @return ERR_OK (only for compatibility fo tcpip_apimsg())
|
---|
332 | */
|
---|
333 | err_t
|
---|
334 | tcpip_apimsg_lock(struct api_msg *apimsg)
|
---|
335 | {
|
---|
336 | #ifdef LWIP_DEBUG
|
---|
337 | /* catch functions that don't set err */
|
---|
338 | apimsg->msg.err = ERR_VAL;
|
---|
339 | #endif
|
---|
340 |
|
---|
341 | LOCK_TCPIP_CORE();
|
---|
342 | apimsg->function(&(apimsg->msg));
|
---|
343 | UNLOCK_TCPIP_CORE();
|
---|
344 | return apimsg->msg.err;
|
---|
345 |
|
---|
346 | }
|
---|
347 | #endif /* LWIP_TCPIP_CORE_LOCKING */
|
---|
348 | #endif /* LWIP_NETCONN */
|
---|
349 |
|
---|
350 | #if LWIP_NETIF_API
|
---|
351 | #if !LWIP_TCPIP_CORE_LOCKING
|
---|
352 | /**
|
---|
353 | * Much like tcpip_apimsg, but calls the lower part of a netifapi_*
|
---|
354 | * function.
|
---|
355 | *
|
---|
356 | * @param netifapimsg a struct containing the function to call and its parameters
|
---|
357 | * @return error code given back by the function that was called
|
---|
358 | */
|
---|
359 | err_t
|
---|
360 | tcpip_netifapi(struct netifapi_msg* netifapimsg)
|
---|
361 | {
|
---|
362 | struct tcpip_msg msg;
|
---|
363 |
|
---|
364 | if (sys_mbox_valid(&mbox)) {
|
---|
365 | err_t err = sys_sem_new(&netifapimsg->msg.sem, 0);
|
---|
366 | if (err != ERR_OK) {
|
---|
367 | netifapimsg->msg.err = err;
|
---|
368 | return err;
|
---|
369 | }
|
---|
370 |
|
---|
371 | msg.type = TCPIP_MSG_NETIFAPI;
|
---|
372 | msg.msg.netifapimsg = netifapimsg;
|
---|
373 | sys_mbox_post(&mbox, &msg);
|
---|
374 | sys_sem_wait(&netifapimsg->msg.sem);
|
---|
375 | sys_sem_free(&netifapimsg->msg.sem);
|
---|
376 | return netifapimsg->msg.err;
|
---|
377 | }
|
---|
378 | return ERR_VAL;
|
---|
379 | }
|
---|
380 | #else /* !LWIP_TCPIP_CORE_LOCKING */
|
---|
381 | /**
|
---|
382 | * Call the lower part of a netifapi_* function
|
---|
383 | * This function has exclusive access to lwIP core code by locking it
|
---|
384 | * before the function is called.
|
---|
385 | *
|
---|
386 | * @param netifapimsg a struct containing the function to call and its parameters
|
---|
387 | * @return ERR_OK (only for compatibility fo tcpip_netifapi())
|
---|
388 | */
|
---|
389 | err_t
|
---|
390 | tcpip_netifapi_lock(struct netifapi_msg* netifapimsg)
|
---|
391 | {
|
---|
392 | LOCK_TCPIP_CORE();
|
---|
393 | netifapimsg->function(&(netifapimsg->msg));
|
---|
394 | UNLOCK_TCPIP_CORE();
|
---|
395 | return netifapimsg->msg.err;
|
---|
396 | }
|
---|
397 | #endif /* !LWIP_TCPIP_CORE_LOCKING */
|
---|
398 | #endif /* LWIP_NETIF_API */
|
---|
399 |
|
---|
400 | /**
|
---|
401 | * Allocate a structure for a static callback message and initialize it.
|
---|
402 | * This is intended to be used to send "static" messages from interrupt context.
|
---|
403 | *
|
---|
404 | * @param function the function to call
|
---|
405 | * @param ctx parameter passed to function
|
---|
406 | * @return a struct pointer to pass to tcpip_trycallback().
|
---|
407 | */
|
---|
408 | struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx)
|
---|
409 | {
|
---|
410 | struct tcpip_msg *msg = (struct tcpip_msg *)memp_malloc(MEMP_TCPIP_MSG_API);
|
---|
411 | if (msg == NULL) {
|
---|
412 | return NULL;
|
---|
413 | }
|
---|
414 | msg->type = TCPIP_MSG_CALLBACK_STATIC;
|
---|
415 | msg->msg.cb.function = function;
|
---|
416 | msg->msg.cb.ctx = ctx;
|
---|
417 | return (struct tcpip_callback_msg*)msg;
|
---|
418 | }
|
---|
419 |
|
---|
420 | /**
|
---|
421 | * Free a callback message allocated by tcpip_callbackmsg_new().
|
---|
422 | *
|
---|
423 | * @param msg the message to free
|
---|
424 | */
|
---|
425 | void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg)
|
---|
426 | {
|
---|
427 | memp_free(MEMP_TCPIP_MSG_API, msg);
|
---|
428 | }
|
---|
429 |
|
---|
430 | /**
|
---|
431 | * Try to post a callback-message to the tcpip_thread mbox
|
---|
432 | * This is intended to be used to send "static" messages from interrupt context.
|
---|
433 | *
|
---|
434 | * @param msg pointer to the message to post
|
---|
435 | * @return sys_mbox_trypost() return code
|
---|
436 | */
|
---|
437 | err_t
|
---|
438 | tcpip_trycallback(struct tcpip_callback_msg* msg)
|
---|
439 | {
|
---|
440 | if (!sys_mbox_valid(&mbox)) {
|
---|
441 | return ERR_VAL;
|
---|
442 | }
|
---|
443 | return sys_mbox_trypost(&mbox, msg);
|
---|
444 | }
|
---|
445 |
|
---|
446 | /**
|
---|
447 | * Initialize this module:
|
---|
448 | * - initialize all sub modules
|
---|
449 | * - start the tcpip_thread
|
---|
450 | *
|
---|
451 | * @param initfunc a function to call when tcpip_thread is running and finished initializing
|
---|
452 | * @param arg argument to pass to initfunc
|
---|
453 | */
|
---|
454 | void
|
---|
455 | tcpip_init(tcpip_init_done_fn initfunc, void *arg)
|
---|
456 | {
|
---|
457 | lwip_init();
|
---|
458 |
|
---|
459 | tcpip_init_done = initfunc;
|
---|
460 | tcpip_init_done_arg = arg;
|
---|
461 | if(sys_mbox_new(&mbox, TCPIP_MBOX_SIZE) != ERR_OK) {
|
---|
462 | LWIP_ASSERT("failed to create tcpip_thread mbox", 0);
|
---|
463 | }
|
---|
464 | #if LWIP_TCPIP_CORE_LOCKING
|
---|
465 | if(sys_mutex_new(&lock_tcpip_core) != ERR_OK) {
|
---|
466 | LWIP_ASSERT("failed to create lock_tcpip_core", 0);
|
---|
467 | }
|
---|
468 | #endif /* LWIP_TCPIP_CORE_LOCKING */
|
---|
469 |
|
---|
470 | sys_thread_new(TCPIP_THREAD_NAME, tcpip_thread, NULL, TCPIP_THREAD_STACKSIZE, TCPIP_THREAD_PRIO);
|
---|
471 | }
|
---|
472 |
|
---|
473 | /**
|
---|
474 | * Simple callback function used with tcpip_callback to free a pbuf
|
---|
475 | * (pbuf_free has a wrong signature for tcpip_callback)
|
---|
476 | *
|
---|
477 | * @param p The pbuf (chain) to be dereferenced.
|
---|
478 | */
|
---|
479 | static void
|
---|
480 | pbuf_free_int(void *p)
|
---|
481 | {
|
---|
482 | struct pbuf *q = (struct pbuf *)p;
|
---|
483 | pbuf_free(q);
|
---|
484 | }
|
---|
485 |
|
---|
486 | /**
|
---|
487 | * A simple wrapper function that allows you to free a pbuf from interrupt context.
|
---|
488 | *
|
---|
489 | * @param p The pbuf (chain) to be dereferenced.
|
---|
490 | * @return ERR_OK if callback could be enqueued, an err_t if not
|
---|
491 | */
|
---|
492 | err_t
|
---|
493 | pbuf_free_callback(struct pbuf *p)
|
---|
494 | {
|
---|
495 | return tcpip_callback_with_block(pbuf_free_int, p, 0);
|
---|
496 | }
|
---|
497 |
|
---|
498 | /**
|
---|
499 | * A simple wrapper function that allows you to free heap memory from
|
---|
500 | * interrupt context.
|
---|
501 | *
|
---|
502 | * @param m the heap memory to free
|
---|
503 | * @return ERR_OK if callback could be enqueued, an err_t if not
|
---|
504 | */
|
---|
505 | err_t
|
---|
506 | mem_free_callback(void *m)
|
---|
507 | {
|
---|
508 | return tcpip_callback_with_block(mem_free, m, 0);
|
---|
509 | }
|
---|
510 |
|
---|
511 | #endif /* !NO_SYS */
|
---|