2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
\r
3 * All rights reserved.
\r
5 * Redistribution and use in source and binary forms, with or without modification,
\r
6 * are permitted provided that the following conditions are met:
\r
8 * 1. Redistributions of source code must retain the above copyright notice,
\r
9 * this list of conditions and the following disclaimer.
\r
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
\r
11 * this list of conditions and the following disclaimer in the documentation
\r
12 * and/or other materials provided with the distribution.
\r
13 * 3. The name of the author may not be used to endorse or promote products
\r
14 * derived from this software without specific prior written permission.
\r
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
\r
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
\r
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
\r
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
\r
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
\r
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
\r
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
\r
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
\r
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
\r
27 * This file is part of the lwIP TCP/IP stack.
\r
29 * Author: Adam Dunkels <adam@sics.se>
\r
33 /* This is the part of the API that is linked with
\r
36 #include "lwip/opt.h"
\r
37 #include "lwip/api.h"
\r
38 #include "lwip/api_msg.h"
\r
39 #include "lwip/memp.h"
\r
43 netbuf *netbuf_new(void)
\r
47 buf = memp_malloc(MEMP_NETBUF);
\r
58 netbuf_delete(struct netbuf *buf)
\r
61 if (buf->p != NULL) {
\r
63 buf->p = buf->ptr = NULL;
\r
65 memp_free(MEMP_NETBUF, buf);
\r
70 netbuf_alloc(struct netbuf *buf, u16_t size)
\r
72 /* Deallocate any previously allocated memory. */
\r
73 if (buf->p != NULL) {
\r
76 buf->p = pbuf_alloc(PBUF_TRANSPORT, size, PBUF_RAM);
\r
77 if (buf->p == NULL) {
\r
81 return buf->p->payload;
\r
85 netbuf_free(struct netbuf *buf)
\r
87 if (buf->p != NULL) {
\r
90 buf->p = buf->ptr = NULL;
\r
94 netbuf_ref(struct netbuf *buf, void *dataptr, u16_t size)
\r
96 if (buf->p != NULL) {
\r
99 buf->p = pbuf_alloc(PBUF_TRANSPORT, 0, PBUF_REF);
\r
100 buf->p->payload = dataptr;
\r
101 buf->p->len = buf->p->tot_len = size;
\r
106 netbuf_chain(struct netbuf *head, struct netbuf *tail)
\r
108 pbuf_chain(head->p, tail->p);
\r
109 head->ptr = head->p;
\r
110 memp_free(MEMP_NETBUF, tail);
\r
114 netbuf_len(struct netbuf *buf)
\r
116 return buf->p->tot_len;
\r
120 netbuf_data(struct netbuf *buf, void **dataptr, u16_t *len)
\r
122 if (buf->ptr == NULL) {
\r
125 *dataptr = buf->ptr->payload;
\r
126 *len = buf->ptr->len;
\r
131 netbuf_next(struct netbuf *buf)
\r
133 if (buf->ptr->next == NULL) {
\r
136 buf->ptr = buf->ptr->next;
\r
137 if (buf->ptr->next == NULL) {
\r
144 netbuf_first(struct netbuf *buf)
\r
150 netbuf_copy_partial(struct netbuf *buf, void *dataptr, u16_t len, u16_t offset)
\r
157 if(buf == NULL || dataptr == NULL) {
\r
161 /* This implementation is bad. It should use bcopy
\r
163 for(p = buf->p; left < len && p != NULL; p = p->next) {
\r
164 if (offset != 0 && offset >= p->len) {
\r
167 for(i = offset; i < p->len; ++i) {
\r
168 ((u8_t *)dataptr)[left] = ((u8_t *)p->payload)[i];
\r
169 if (++left >= len) {
\r
179 netbuf_copy(struct netbuf *buf, void *dataptr, u16_t len)
\r
181 netbuf_copy_partial(buf, dataptr, len, 0);
\r
185 netbuf_fromaddr(struct netbuf *buf)
\r
187 return buf->fromaddr;
\r
191 netbuf_fromport(struct netbuf *buf)
\r
193 return buf->fromport;
\r
197 netconn *netconn_new_with_proto_and_callback(enum netconn_type t, u16_t proto,
\r
198 void (*callback)(struct netconn *, enum netconn_evt, u16_t len))
\r
200 struct netconn *conn;
\r
201 struct api_msg *msg;
\r
203 conn = memp_malloc(MEMP_NETCONN);
\r
204 if (conn == NULL) {
\r
208 conn->err = ERR_OK;
\r
210 conn->pcb.tcp = NULL;
\r
212 if ((conn->mbox = sys_mbox_new()) == SYS_MBOX_NULL) {
\r
213 memp_free(MEMP_NETCONN, conn);
\r
216 conn->recvmbox = SYS_MBOX_NULL;
\r
217 conn->acceptmbox = SYS_MBOX_NULL;
\r
218 conn->sem = sys_sem_new(0);
\r
219 if (conn->sem == SYS_SEM_NULL) {
\r
220 memp_free(MEMP_NETCONN, conn);
\r
223 conn->state = NETCONN_NONE;
\r
225 conn->callback = callback;
\r
226 conn->recv_avail = 0;
\r
228 if((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
229 memp_free(MEMP_NETCONN, conn);
\r
233 msg->type = API_MSG_NEWCONN;
\r
234 msg->msg.msg.bc.port = proto; /* misusing the port field */
\r
235 msg->msg.conn = conn;
\r
236 api_msg_post(msg);
\r
237 sys_mbox_fetch(conn->mbox, NULL);
\r
238 memp_free(MEMP_API_MSG, msg);
\r
240 if ( conn->err != ERR_OK ) {
\r
241 memp_free(MEMP_NETCONN, conn);
\r
250 netconn *netconn_new(enum netconn_type t)
\r
252 return netconn_new_with_proto_and_callback(t,0,NULL);
\r
256 netconn *netconn_new_with_callback(enum netconn_type t,
\r
257 void (*callback)(struct netconn *, enum netconn_evt, u16_t len))
\r
259 return netconn_new_with_proto_and_callback(t,0,callback);
\r
264 netconn_delete(struct netconn *conn)
\r
266 struct api_msg *msg;
\r
269 if (conn == NULL) {
\r
273 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
277 msg->type = API_MSG_DELCONN;
\r
278 msg->msg.conn = conn;
\r
279 api_msg_post(msg);
\r
280 sys_mbox_fetch(conn->mbox, NULL);
\r
281 memp_free(MEMP_API_MSG, msg);
\r
283 /* Drain the recvmbox. */
\r
284 if (conn->recvmbox != SYS_MBOX_NULL) {
\r
285 while (sys_arch_mbox_fetch(conn->recvmbox, &mem, 1) != SYS_ARCH_TIMEOUT) {
\r
286 if (conn->type == NETCONN_TCP) {
\r
288 pbuf_free((struct pbuf *)mem);
\r
290 netbuf_delete((struct netbuf *)mem);
\r
293 sys_mbox_free(conn->recvmbox);
\r
294 conn->recvmbox = SYS_MBOX_NULL;
\r
298 /* Drain the acceptmbox. */
\r
299 if (conn->acceptmbox != SYS_MBOX_NULL) {
\r
300 while (sys_arch_mbox_fetch(conn->acceptmbox, &mem, 1) != SYS_ARCH_TIMEOUT) {
\r
301 netconn_delete((struct netconn *)mem);
\r
304 sys_mbox_free(conn->acceptmbox);
\r
305 conn->acceptmbox = SYS_MBOX_NULL;
\r
308 sys_mbox_free(conn->mbox);
\r
309 conn->mbox = SYS_MBOX_NULL;
\r
310 if (conn->sem != SYS_SEM_NULL) {
\r
311 sys_sem_free(conn->sem);
\r
313 /* conn->sem = SYS_SEM_NULL;*/
\r
314 memp_free(MEMP_NETCONN, conn);
\r
319 netconn_type(struct netconn *conn)
\r
325 netconn_peer(struct netconn *conn, struct ip_addr *addr,
\r
328 switch (conn->type) {
\r
330 /* return an error as connecting is only a helper for upper layers */
\r
332 case NETCONN_UDPLITE:
\r
333 case NETCONN_UDPNOCHKSUM:
\r
335 if (conn->pcb.udp == NULL ||
\r
336 ((conn->pcb.udp->flags & UDP_FLAGS_CONNECTED) == 0))
\r
338 *addr = (conn->pcb.udp->remote_ip);
\r
339 *port = conn->pcb.udp->remote_port;
\r
342 if (conn->pcb.tcp == NULL)
\r
344 *addr = (conn->pcb.tcp->remote_ip);
\r
345 *port = conn->pcb.tcp->remote_port;
\r
348 return (conn->err = ERR_OK);
\r
352 netconn_addr(struct netconn *conn, struct ip_addr **addr,
\r
355 switch (conn->type) {
\r
357 *addr = &(conn->pcb.raw->local_ip);
\r
358 *port = conn->pcb.raw->protocol;
\r
360 case NETCONN_UDPLITE:
\r
361 case NETCONN_UDPNOCHKSUM:
\r
363 *addr = &(conn->pcb.udp->local_ip);
\r
364 *port = conn->pcb.udp->local_port;
\r
367 *addr = &(conn->pcb.tcp->local_ip);
\r
368 *port = conn->pcb.tcp->local_port;
\r
371 return (conn->err = ERR_OK);
\r
375 netconn_bind(struct netconn *conn, struct ip_addr *addr,
\r
378 struct api_msg *msg;
\r
380 if (conn == NULL) {
\r
384 if (conn->type != NETCONN_TCP &&
\r
385 conn->recvmbox == SYS_MBOX_NULL) {
\r
386 if ((conn->recvmbox = sys_mbox_new()) == SYS_MBOX_NULL) {
\r
391 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
392 return (conn->err = ERR_MEM);
\r
394 msg->type = API_MSG_BIND;
\r
395 msg->msg.conn = conn;
\r
396 msg->msg.msg.bc.ipaddr = addr;
\r
397 msg->msg.msg.bc.port = port;
\r
399 sys_mbox_fetch(conn->mbox, NULL);
\r
400 memp_free(MEMP_API_MSG, msg);
\r
406 netconn_connect(struct netconn *conn, struct ip_addr *addr,
\r
409 struct api_msg *msg;
\r
411 if (conn == NULL) {
\r
416 if (conn->recvmbox == SYS_MBOX_NULL) {
\r
417 if ((conn->recvmbox = sys_mbox_new()) == SYS_MBOX_NULL) {
\r
422 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
425 msg->type = API_MSG_CONNECT;
\r
426 msg->msg.conn = conn;
\r
427 msg->msg.msg.bc.ipaddr = addr;
\r
428 msg->msg.msg.bc.port = port;
\r
430 sys_mbox_fetch(conn->mbox, NULL);
\r
431 memp_free(MEMP_API_MSG, msg);
\r
436 netconn_disconnect(struct netconn *conn)
\r
438 struct api_msg *msg;
\r
440 if (conn == NULL) {
\r
444 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
447 msg->type = API_MSG_DISCONNECT;
\r
448 msg->msg.conn = conn;
\r
450 sys_mbox_fetch(conn->mbox, NULL);
\r
451 memp_free(MEMP_API_MSG, msg);
\r
457 netconn_listen(struct netconn *conn)
\r
459 struct api_msg *msg;
\r
461 if (conn == NULL) {
\r
465 if (conn->acceptmbox == SYS_MBOX_NULL) {
\r
466 conn->acceptmbox = sys_mbox_new();
\r
467 if (conn->acceptmbox == SYS_MBOX_NULL) {
\r
472 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
473 return (conn->err = ERR_MEM);
\r
475 msg->type = API_MSG_LISTEN;
\r
476 msg->msg.conn = conn;
\r
478 sys_mbox_fetch(conn->mbox, NULL);
\r
479 memp_free(MEMP_API_MSG, msg);
\r
484 netconn_accept(struct netconn *conn)
\r
486 struct netconn *newconn;
\r
488 if (conn == NULL) {
\r
492 sys_mbox_fetch(conn->acceptmbox, (void *)&newconn);
\r
493 /* Register event with callback */
\r
494 if (conn->callback)
\r
495 (*conn->callback)(conn, NETCONN_EVT_RCVMINUS, 0);
\r
501 netconn_recv(struct netconn *conn)
\r
503 struct api_msg *msg;
\r
504 struct netbuf *buf;
\r
508 if (conn == NULL) {
\r
512 if (conn->recvmbox == SYS_MBOX_NULL) {
\r
513 conn->err = ERR_CONN;
\r
517 if (conn->err != ERR_OK) {
\r
521 if (conn->type == NETCONN_TCP) {
\r
522 if (conn->pcb.tcp->state == LISTEN) {
\r
523 conn->err = ERR_CONN;
\r
528 buf = memp_malloc(MEMP_NETBUF);
\r
531 conn->err = ERR_MEM;
\r
535 sys_mbox_fetch(conn->recvmbox, (void *)&p);
\r
540 conn->recv_avail -= len;
\r
545 /* Register event with callback */
\r
546 if (conn->callback)
\r
547 (*conn->callback)(conn, NETCONN_EVT_RCVMINUS, len);
\r
549 /* If we are closed, we indicate that we no longer wish to receive
\r
550 data by setting conn->recvmbox to SYS_MBOX_NULL. */
\r
552 memp_free(MEMP_NETBUF, buf);
\r
553 sys_mbox_free(conn->recvmbox);
\r
554 conn->recvmbox = SYS_MBOX_NULL;
\r
561 buf->fromaddr = NULL;
\r
563 /* Let the stack know that we have taken the data. */
\r
564 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
565 conn->err = ERR_MEM;
\r
568 msg->type = API_MSG_RECV;
\r
569 msg->msg.conn = conn;
\r
571 msg->msg.msg.len = buf->p->tot_len;
\r
573 msg->msg.msg.len = 1;
\r
577 sys_mbox_fetch(conn->mbox, NULL);
\r
578 memp_free(MEMP_API_MSG, msg);
\r
580 sys_mbox_fetch(conn->recvmbox, (void *)&buf);
\r
581 conn->recv_avail -= buf->p->tot_len;
\r
582 /* Register event with callback */
\r
583 if (conn->callback)
\r
584 (*conn->callback)(conn, NETCONN_EVT_RCVMINUS, buf->p->tot_len);
\r
590 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_recv: received %p (err %d)\n", (void *)buf, conn->err));
\r
597 netconn_send(struct netconn *conn, struct netbuf *buf)
\r
599 struct api_msg *msg;
\r
601 if (conn == NULL) {
\r
605 if (conn->err != ERR_OK) {
\r
609 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
610 return (conn->err = ERR_MEM);
\r
613 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_send: sending %d bytes\n", buf->p->tot_len));
\r
614 msg->type = API_MSG_SEND;
\r
615 msg->msg.conn = conn;
\r
616 msg->msg.msg.p = buf->p;
\r
619 sys_mbox_fetch(conn->mbox, NULL);
\r
620 memp_free(MEMP_API_MSG, msg);
\r
625 netconn_write(struct netconn *conn, void *dataptr, u16_t size, u8_t copy)
\r
627 struct api_msg *msg;
\r
630 if (conn == NULL) {
\r
634 if (conn->err != ERR_OK) {
\r
638 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
639 return (conn->err = ERR_MEM);
\r
641 msg->type = API_MSG_WRITE;
\r
642 msg->msg.conn = conn;
\r
645 conn->state = NETCONN_WRITE;
\r
646 while (conn->err == ERR_OK && size > 0) {
\r
647 msg->msg.msg.w.dataptr = dataptr;
\r
648 msg->msg.msg.w.copy = copy;
\r
650 if (conn->type == NETCONN_TCP) {
\r
651 if (tcp_sndbuf(conn->pcb.tcp) == 0) {
\r
652 sys_sem_wait(conn->sem);
\r
653 if (conn->err != ERR_OK) {
\r
657 if (size > tcp_sndbuf(conn->pcb.tcp)) {
\r
658 /* We cannot send more than one send buffer's worth of data at a
\r
660 len = tcp_sndbuf(conn->pcb.tcp);
\r
668 LWIP_DEBUGF(API_LIB_DEBUG, ("netconn_write: writing %d bytes (%d)\n", len, copy));
\r
669 msg->msg.msg.w.len = len;
\r
671 sys_mbox_fetch(conn->mbox, NULL);
\r
672 if (conn->err == ERR_OK) {
\r
673 dataptr = (void *)((u8_t *)dataptr + len);
\r
675 } else if (conn->err == ERR_MEM) {
\r
676 conn->err = ERR_OK;
\r
677 sys_sem_wait(conn->sem);
\r
683 memp_free(MEMP_API_MSG, msg);
\r
684 conn->state = NETCONN_NONE;
\r
690 netconn_close(struct netconn *conn)
\r
692 struct api_msg *msg;
\r
694 if (conn == NULL) {
\r
697 if ((msg = memp_malloc(MEMP_API_MSG)) == NULL) {
\r
698 return (conn->err = ERR_MEM);
\r
701 conn->state = NETCONN_CLOSE;
\r
703 msg->type = API_MSG_CLOSE;
\r
704 msg->msg.conn = conn;
\r
706 sys_mbox_fetch(conn->mbox, NULL);
\r
707 if (conn->err == ERR_MEM &&
\r
708 conn->sem != SYS_SEM_NULL) {
\r
709 sys_sem_wait(conn->sem);
\r
712 conn->state = NETCONN_NONE;
\r
713 memp_free(MEMP_API_MSG, msg);
\r
718 netconn_err(struct netconn *conn)
\r