2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
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.
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
27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
31 * Improved by Marc Boucher <marc@mbsi.ca> and David Haas <dhaas@alum.rpi.edu>
40 #include "lwip/arch.h"
43 #include "lwip/sockets.h"
45 #define NUM_SOCKETS MEMP_NUM_NETCONN
49 struct netbuf *lastdata;
59 struct lwip_select_cb *next;
67 static struct lwip_socket sockets[NUM_SOCKETS];
68 static struct lwip_select_cb *select_cb_list = 0;
70 static sys_sem_t socksem = 0;
71 static sys_sem_t selectsem = 0;
74 event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len);
76 static int err_to_errno_table[11] = {
77 0, /* ERR_OK 0 No error, everything OK. */
78 ENOMEM, /* ERR_MEM -1 Out of memory error. */
79 ENOBUFS, /* ERR_BUF -2 Buffer error. */
80 ECONNABORTED, /* ERR_ABRT -3 Connection aborted. */
81 ECONNRESET, /* ERR_RST -4 Connection reset. */
82 ESHUTDOWN, /* ERR_CLSD -5 Connection closed. */
83 ENOTCONN, /* ERR_CONN -6 Not connected. */
84 EINVAL, /* ERR_VAL -7 Illegal value. */
85 EIO, /* ERR_ARG -8 Illegal argument. */
86 EHOSTUNREACH, /* ERR_RTE -9 Routing problem. */
87 EADDRINUSE /* ERR_USE -10 Address in use. */
90 #define err_to_errno(err) \
91 ((err) < (sizeof(err_to_errno_table)/sizeof(int))) ? \
92 err_to_errno_table[-(err)] : EIO
95 #define set_errno(err) errno = (err)
97 #define set_errno(err)
100 #define sock_set_errno(sk, e) do { \
102 set_errno(sk->err); \
106 static struct lwip_socket *
109 struct lwip_socket *sock;
111 if ((s < 0) || (s > NUM_SOCKETS)) {
112 LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s));
120 LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s));
129 alloc_socket(struct netconn *newconn)
134 socksem = sys_sem_new(1);
136 /* Protect socket array */
137 sys_sem_wait(socksem);
139 /* allocate a new socket identifier */
140 for(i = 0; i < NUM_SOCKETS; ++i) {
141 if (!sockets[i].conn) {
142 sockets[i].conn = newconn;
143 sockets[i].lastdata = NULL;
144 sockets[i].lastoffset = 0;
145 sockets[i].rcvevent = 0;
146 sockets[i].sendevent = 1; /* TCP send buf is empty */
147 sockets[i].flags = 0;
149 sys_sem_signal(socksem);
153 sys_sem_signal(socksem);
158 lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
160 struct lwip_socket *sock;
161 struct netconn *newconn;
162 struct ip_addr naddr;
165 struct sockaddr_in sin;
167 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s));
168 sock = get_socket(s);
174 newconn = netconn_accept(sock->conn);
176 /* get the IP address and port of the remote host */
177 netconn_peer(newconn, &naddr, &port);
179 memset(&sin, 0, sizeof(sin));
180 sin.sin_len = sizeof(sin);
181 sin.sin_family = AF_INET;
182 sin.sin_port = htons(port);
183 sin.sin_addr.s_addr = naddr.addr;
185 if (*addrlen > sizeof(sin))
186 *addrlen = sizeof(sin);
188 memcpy(addr, &sin, *addrlen);
190 newsock = alloc_socket(newconn);
192 netconn_delete(newconn);
193 sock_set_errno(sock, ENOBUFS);
196 newconn->callback = event_callback;
197 sock = get_socket(newsock);
199 sys_sem_wait(socksem);
200 sock->rcvevent += -1 - newconn->socket;
201 newconn->socket = newsock;
202 sys_sem_signal(socksem);
204 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d addr=", s, newsock));
205 ip_addr_debug_print(SOCKETS_DEBUG, &naddr);
206 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u\n", port));
208 sock_set_errno(sock, 0);
213 lwip_bind(int s, struct sockaddr *name, socklen_t namelen)
215 struct lwip_socket *sock;
216 struct ip_addr local_addr;
220 sock = get_socket(s);
226 local_addr.addr = ((struct sockaddr_in *)name)->sin_addr.s_addr;
227 local_port = ((struct sockaddr_in *)name)->sin_port;
229 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d, addr=", s));
230 ip_addr_debug_print(SOCKETS_DEBUG, &local_addr);
231 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u)\n", ntohs(local_port)));
233 err = netconn_bind(sock->conn, &local_addr, ntohs(local_port));
236 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err));
237 sock_set_errno(sock, err_to_errno(err));
241 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s));
242 sock_set_errno(sock, 0);
249 struct lwip_socket *sock;
251 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_close(%d)\n", s));
253 socksem = sys_sem_new(1);
255 /* We cannot allow multiple closes of the same socket. */
256 sys_sem_wait(socksem);
258 sock = get_socket(s);
260 sys_sem_signal(socksem);
265 netconn_delete(sock->conn);
266 if (sock->lastdata) {
267 netbuf_delete(sock->lastdata);
269 sock->lastdata = NULL;
270 sock->lastoffset = 0;
272 sys_sem_signal(socksem);
273 sock_set_errno(sock, 0);
278 lwip_connect(int s, struct sockaddr *name, socklen_t namelen)
280 struct lwip_socket *sock;
283 sock = get_socket(s);
289 if (((struct sockaddr_in *)name)->sin_family == AF_UNSPEC) {
290 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, AF_UNSPEC)\n", s));
291 err = netconn_disconnect(sock->conn);
293 struct ip_addr remote_addr;
296 remote_addr.addr = ((struct sockaddr_in *)name)->sin_addr.s_addr;
297 remote_port = ((struct sockaddr_in *)name)->sin_port;
299 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, addr=", s));
300 ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr);
301 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u)\n", ntohs(remote_port)));
303 err = netconn_connect(sock->conn, &remote_addr, ntohs(remote_port));
307 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) failed, err=%d\n", s, err));
308 sock_set_errno(sock, err_to_errno(err));
312 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) succeeded\n", s));
313 sock_set_errno(sock, 0);
318 lwip_listen(int s, int backlog)
320 struct lwip_socket *sock;
323 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d, backlog=%d)\n", s, backlog));
324 sock = get_socket(s);
330 err = netconn_listen(sock->conn);
333 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d) failed, err=%d\n", s, err));
334 sock_set_errno(sock, err_to_errno(err));
338 sock_set_errno(sock, 0);
343 lwip_recvfrom(int s, void *mem, int len, unsigned int flags,
344 struct sockaddr *from, socklen_t *fromlen)
346 struct lwip_socket *sock;
348 u16_t buflen, copylen;
349 struct ip_addr *addr;
353 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d, %p, %d, 0x%x, ..)\n", s, mem, len, flags));
354 sock = get_socket(s);
360 /* Check if there is data left from the last recv operation. */
361 if (sock->lastdata) {
362 buf = sock->lastdata;
364 /* If this is non-blocking call, then check first */
365 if (((flags & MSG_DONTWAIT) || (sock->flags & O_NONBLOCK))
368 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): returning EWOULDBLOCK\n", s));
369 sock_set_errno(sock, EWOULDBLOCK);
373 /* No data was left from the previous operation, so we try to get
374 some from the network. */
375 buf = netconn_recv(sock->conn);
378 /* We should really do some error checking here. */
379 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL!\n", s));
380 sock_set_errno(sock, 0);
385 buflen = netbuf_len(buf);
387 buflen -= sock->lastoffset;
395 /* copy the contents of the received buffer into
396 the supplied memory pointer mem */
397 netbuf_copy_partial(buf, mem, copylen, sock->lastoffset);
399 /* Check to see from where the data was. */
400 if (from && fromlen) {
401 struct sockaddr_in sin;
403 addr = netbuf_fromaddr(buf);
404 port = netbuf_fromport(buf);
406 memset(&sin, 0, sizeof(sin));
407 sin.sin_len = sizeof(sin);
408 sin.sin_family = AF_INET;
409 sin.sin_port = htons(port);
410 sin.sin_addr.s_addr = addr->addr;
412 if (*fromlen > sizeof(sin))
413 *fromlen = sizeof(sin);
415 memcpy(from, &sin, *fromlen);
417 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s));
418 ip_addr_debug_print(SOCKETS_DEBUG, addr);
419 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u len=%u\n", port, copylen));
422 addr = netbuf_fromaddr(buf);
423 port = netbuf_fromport(buf);
425 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s));
426 ip_addr_debug_print(SOCKETS_DEBUG, addr);
427 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u len=%u\n", port, copylen));
432 /* If this is a TCP socket, check if there is data left in the
433 buffer. If so, it should be saved in the sock structure for next
435 if (netconn_type(sock->conn) == NETCONN_TCP && buflen - copylen > 0) {
436 sock->lastdata = buf;
437 sock->lastoffset += copylen;
439 sock->lastdata = NULL;
440 sock->lastoffset = 0;
445 sock_set_errno(sock, 0);
450 lwip_read(int s, void *mem, int len)
452 return lwip_recvfrom(s, mem, len, 0, NULL, NULL);
456 lwip_recv(int s, void *mem, int len, unsigned int flags)
458 return lwip_recvfrom(s, mem, len, flags, NULL, NULL);
462 lwip_send(int s, void *data, int size, unsigned int flags)
464 struct lwip_socket *sock;
468 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d, data=%p, size=%d, flags=0x%x)\n", s, data, size, flags));
470 sock = get_socket(s);
476 switch (netconn_type(sock->conn)) {
479 case NETCONN_UDPLITE:
480 case NETCONN_UDPNOCHKSUM:
481 /* create a buffer */
485 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) ENOBUFS\n", s));
486 sock_set_errno(sock, ENOBUFS);
490 /* make the buffer point to the data that should
492 netbuf_ref(buf, data, size);
495 err = netconn_send(sock->conn, buf);
497 /* deallocated the buffer */
501 err = netconn_write(sock->conn, data, size, NETCONN_COPY);
508 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) err=%d\n", s, err));
509 sock_set_errno(sock, err_to_errno(err));
513 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) ok size=%d\n", s, size));
514 sock_set_errno(sock, 0);
519 lwip_sendto(int s, void *data, int size, unsigned int flags,
520 struct sockaddr *to, socklen_t tolen)
522 struct lwip_socket *sock;
523 struct ip_addr remote_addr, addr;
524 u16_t remote_port, port;
527 sock = get_socket(s);
533 /* get the peer if currently connected */
534 connected = (netconn_peer(sock->conn, &addr, &port) == ERR_OK);
536 remote_addr.addr = ((struct sockaddr_in *)to)->sin_addr.s_addr;
537 remote_port = ((struct sockaddr_in *)to)->sin_port;
539 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_sendto(%d, data=%p, size=%d, flags=0x%x to=", s, data, size, flags));
540 ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr);
541 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u\n", ntohs(remote_port)));
543 netconn_connect(sock->conn, &remote_addr, ntohs(remote_port));
545 ret = lwip_send(s, data, size, flags);
547 /* reset the remote address and port number
550 netconn_connect(sock->conn, &addr, port);
552 netconn_disconnect(sock->conn);
557 lwip_socket(int domain, int type, int protocol)
559 struct netconn *conn;
562 /* create a netconn */
565 conn = netconn_new_with_proto_and_callback(NETCONN_RAW, protocol, event_callback);
566 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_RAW, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
569 conn = netconn_new_with_callback(NETCONN_UDP, event_callback);
570 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_DGRAM, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
573 conn = netconn_new_with_callback(NETCONN_TCP, event_callback);
574 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_STREAM, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
577 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%d, %d/UNKNOWN, %d) = -1\n", domain, type, protocol));
583 LWIP_DEBUGF(SOCKETS_DEBUG, ("-1 / ENOBUFS (could not create netconn)\n"));
588 i = alloc_socket(conn);
591 netconn_delete(conn);
596 LWIP_DEBUGF(SOCKETS_DEBUG, ("%d\n", i));
602 lwip_write(int s, void *data, int size)
604 return lwip_send(s, data, size, 0);
609 lwip_selscan(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset)
612 fd_set lreadset, lwriteset, lexceptset;
613 struct lwip_socket *p_sock;
617 FD_ZERO(&lexceptset);
619 /* Go through each socket in each list to count number of sockets which
621 for(i = 0; i < maxfdp1; i++)
623 if (FD_ISSET(i, readset))
625 /* See if netconn of this socket is ready for read */
626 p_sock = get_socket(i);
627 if (p_sock && (p_sock->lastdata || p_sock->rcvevent))
629 FD_SET(i, &lreadset);
630 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for reading\n", i));
634 if (FD_ISSET(i, writeset))
636 /* See if netconn of this socket is ready for write */
637 p_sock = get_socket(i);
638 if (p_sock && p_sock->sendevent)
640 FD_SET(i, &lwriteset);
641 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for writing\n", i));
647 *writeset = lwriteset;
656 lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
657 struct timeval *timeout)
661 fd_set lreadset, lwriteset, lexceptset;
663 struct lwip_select_cb select_cb;
664 struct lwip_select_cb *p_selcb;
666 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select(%d, %p, %p, %p, tvsec=%ld tvusec=%ld)\n", maxfdp1, (void *)readset, (void *) writeset, (void *) exceptset, timeout ? timeout->tv_sec : -1L, timeout ? timeout->tv_usec : -1L));
669 select_cb.readset = readset;
670 select_cb.writeset = writeset;
671 select_cb.exceptset = exceptset;
672 select_cb.sem_signalled = 0;
674 /* Protect ourselves searching through the list */
676 selectsem = sys_sem_new(1);
677 sys_sem_wait(selectsem);
684 lwriteset = *writeset;
688 lexceptset = *exceptset;
690 FD_ZERO(&lexceptset);
692 /* Go through each socket in each list to count number of sockets which
694 nready = lwip_selscan(maxfdp1, &lreadset, &lwriteset, &lexceptset);
696 /* If we don't have any current events, then suspend if we are supposed to */
699 if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0)
701 sys_sem_signal(selectsem);
709 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: no timeout, returning 0\n"));
715 /* add our semaphore to list */
716 /* We don't actually need any dynamic memory. Our entry on the
717 * list is only valid while we are in this function, so it's ok
718 * to use local variables */
720 select_cb.sem = sys_sem_new(0);
721 /* Note that we are still protected */
722 /* Put this select_cb on top of list */
723 select_cb.next = select_cb_list;
724 select_cb_list = &select_cb;
726 /* Now we can safely unprotect */
727 sys_sem_signal(selectsem);
729 /* Now just wait to be woken */
734 msectimeout = ((timeout->tv_sec * 1000) + ((timeout->tv_usec + 500)/1000));
736 i = sys_sem_wait_timeout(select_cb.sem, msectimeout);
738 /* Take us off the list */
739 sys_sem_wait(selectsem);
740 if (select_cb_list == &select_cb)
741 select_cb_list = select_cb.next;
743 for (p_selcb = select_cb_list; p_selcb; p_selcb = p_selcb->next)
744 if (p_selcb->next == &select_cb)
746 p_selcb->next = select_cb.next;
750 sys_sem_signal(selectsem);
752 sys_sem_free(select_cb.sem);
753 if (i == 0) /* Timeout */
762 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: timeout expired\n"));
773 lwriteset = *writeset;
777 lexceptset = *exceptset;
779 FD_ZERO(&lexceptset);
782 nready = lwip_selscan(maxfdp1, &lreadset, &lwriteset, &lexceptset);
785 sys_sem_signal(selectsem);
790 *writeset = lwriteset;
792 *exceptset = lexceptset;
794 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: nready=%d\n", nready));
802 event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
805 struct lwip_socket *sock;
806 struct lwip_select_cb *scb;
814 /* Data comes in right away after an accept, even though
815 * the server task might not have created a new socket yet.
816 * Just count down (or up) if that's the case and we
817 * will use the data later. Note that only receive events
818 * can happen before the new socket is set up. */
819 if (evt == NETCONN_EVT_RCVPLUS)
824 sock = get_socket(s);
832 selectsem = sys_sem_new(1);
834 sys_sem_wait(selectsem);
835 /* Set event as required */
838 case NETCONN_EVT_RCVPLUS:
841 case NETCONN_EVT_RCVMINUS:
844 case NETCONN_EVT_SENDPLUS:
847 case NETCONN_EVT_SENDMINUS:
851 sys_sem_signal(selectsem);
853 /* Now decide if anyone is waiting for this socket */
854 /* NOTE: This code is written this way to protect the select link list
855 but to avoid a deadlock situation by releasing socksem before
856 signalling for the select. This means we need to go through the list
857 multiple times ONLY IF a select was actually waiting. We go through
858 the list the number of waiting select calls + 1. This list is
859 expected to be small. */
862 sys_sem_wait(selectsem);
863 for (scb = select_cb_list; scb; scb = scb->next)
865 if (scb->sem_signalled == 0)
867 /* Test this select call for our socket */
868 if (scb->readset && FD_ISSET(s, scb->readset))
871 if (scb->writeset && FD_ISSET(s, scb->writeset))
878 scb->sem_signalled = 1;
879 sys_sem_signal(selectsem);
880 sys_sem_signal(scb->sem);
882 sys_sem_signal(selectsem);
892 int lwip_shutdown(int s, int how)
894 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_shutdown(%d, how=%d)\n", s, how));
895 return lwip_close(s); /* XXX temporary hack until proper implementation */
898 int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen)
900 struct lwip_socket *sock;
901 struct sockaddr_in sin;
902 struct ip_addr naddr;
904 sock = get_socket(s);
910 memset(&sin, 0, sizeof(sin));
911 sin.sin_len = sizeof(sin);
912 sin.sin_family = AF_INET;
914 /* get the IP address and port of the remote host */
915 netconn_peer(sock->conn, &naddr, &sin.sin_port);
917 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getpeername(%d, addr=", s));
918 ip_addr_debug_print(SOCKETS_DEBUG, &naddr);
919 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%d)\n", sin.sin_port));
921 sin.sin_port = htons(sin.sin_port);
922 sin.sin_addr.s_addr = naddr.addr;
924 if (*namelen > sizeof(sin))
925 *namelen = sizeof(sin);
927 memcpy(name, &sin, *namelen);
928 sock_set_errno(sock, 0);
932 int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen)
934 struct lwip_socket *sock;
935 struct sockaddr_in sin;
936 struct ip_addr *naddr;
938 sock = get_socket(s);
944 memset(&sin, 0, sizeof(sin));
945 sin.sin_len = sizeof(sin);
946 sin.sin_family = AF_INET;
948 /* get the IP address and port of the remote host */
949 netconn_addr(sock->conn, &naddr, &sin.sin_port);
951 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockname(%d, addr=", s));
952 ip_addr_debug_print(SOCKETS_DEBUG, naddr);
953 LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%d)\n", sin.sin_port));
955 sin.sin_port = htons(sin.sin_port);
956 sin.sin_addr.s_addr = naddr->addr;
958 if (*namelen > sizeof(sin))
959 *namelen = sizeof(sin);
961 memcpy(name, &sin, *namelen);
962 sock_set_errno(sock, 0);
966 int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen)
969 struct lwip_socket *sock = get_socket(s);
976 if( NULL == optval || NULL == optlen ) {
977 sock_set_errno( sock, EFAULT );
981 /* Do length and type checks for the various options first, to keep it readable. */
984 /* Level: SOL_SOCKET */
990 /* UNIMPL case SO_DEBUG: */
991 /* UNIMPL case SO_DONTROUTE: */
994 /* UNIMPL case SO_OOBINLINE: */
995 /* UNIMPL case SO_RCVBUF: */
996 /* UNIMPL case SO_SNDBUF: */
997 /* UNIMPL case SO_RCVLOWAT: */
998 /* UNIMPL case SO_SNDLOWAT: */
1002 #endif /* SO_REUSE */
1004 /* UNIMPL case SO_USELOOPBACK: */
1005 if( *optlen < sizeof(int) ) {
1011 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", s, optname));
1016 /* Level: IPPROTO_IP */
1019 /* UNIMPL case IP_HDRINCL: */
1020 /* UNIMPL case IP_RCVDSTADDR: */
1021 /* UNIMPL case IP_RCVIF: */
1024 if( *optlen < sizeof(int) ) {
1030 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1035 /* Level: IPPROTO_TCP */
1037 if( *optlen < sizeof(int) ) {
1042 /* If this is no TCP socket, ignore any options. */
1043 if ( sock->conn->type != NETCONN_TCP ) return 0;
1051 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1056 /* UNDEFINED LEVEL */
1058 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", s, level, optname));
1064 sock_set_errno(sock, err);
1070 /* Now do the actual option processing */
1074 /* Level: SOL_SOCKET */
1078 /* The option flags */
1081 /* UNIMPL case SO_DEBUG: */
1082 /* UNIMPL case SO_DONTROUTE: */
1084 /* UNIMPL case SO_OOBINCLUDE: */
1088 #endif /* SO_REUSE */
1089 /*case SO_USELOOPBACK: UNIMPL */
1090 *(int*)optval = sock->conn->pcb.tcp->so_options & optname;
1091 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, optname=0x%x, ..) = %s\n", s, optname, (*(int*)optval?"on":"off")));
1095 switch (sock->conn->type) {
1097 *(int*)optval = SOCK_RAW;
1100 *(int*)optval = SOCK_STREAM;
1103 case NETCONN_UDPLITE:
1104 case NETCONN_UDPNOCHKSUM:
1105 *(int*)optval = SOCK_DGRAM;
1107 default: /* unrecognized socket type */
1108 *(int*)optval = sock->conn->type;
1109 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n", s, *(int *)optval));
1111 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE) = %d\n", s, *(int *)optval));
1115 *(int *)optval = sock->err;
1117 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_ERROR) = %d\n", s, *(int *)optval));
1122 /* Level: IPPROTO_IP */
1126 *(int*)optval = sock->conn->pcb.tcp->ttl;
1127 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TTL) = %d\n", s, *(int *)optval));
1130 *(int*)optval = sock->conn->pcb.tcp->tos;
1131 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TOS) = %d\n", s, *(int *)optval));
1136 /* Level: IPPROTO_TCP */
1140 *(int*)optval = (sock->conn->pcb.tcp->flags & TF_NODELAY);
1141 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_NODELAY) = %s\n", s, (*(int*)optval)?"on":"off") );
1144 *(int*)optval = (int)sock->conn->pcb.tcp->keepalive;
1145 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPALIVE) = %d\n", s, *(int *)optval));
1152 sock_set_errno(sock, err);
1153 return err ? -1 : 0;
1156 int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen)
1158 struct lwip_socket *sock = get_socket(s);
1166 if( NULL == optval ) {
1167 sock_set_errno( sock, EFAULT );
1172 /* Do length and type checks for the various options first, to keep it readable. */
1175 /* Level: SOL_SOCKET */
1180 /* UNIMPL case SO_DEBUG: */
1181 /* UNIMPL case SO_DONTROUTE: */
1183 /* UNIMPL case SO_OOBINLINE: */
1184 /* UNIMPL case SO_RCVBUF: */
1185 /* UNIMPL case SO_SNDBUF: */
1186 /* UNIMPL case SO_RCVLOWAT: */
1187 /* UNIMPL case SO_SNDLOWAT: */
1191 #endif /* SO_REUSE */
1192 /* UNIMPL case SO_USELOOPBACK: */
1193 if( optlen < sizeof(int) ) {
1198 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", s, optname));
1203 /* Level: IPPROTO_IP */
1206 /* UNIMPL case IP_HDRINCL: */
1207 /* UNIMPL case IP_RCVDSTADDR: */
1208 /* UNIMPL case IP_RCVIF: */
1211 if( optlen < sizeof(int) ) {
1216 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1221 /* Level: IPPROTO_TCP */
1223 if( optlen < sizeof(int) ) {
1228 /* If this is no TCP socket, ignore any options. */
1229 if ( sock->conn->type != NETCONN_TCP ) return 0;
1237 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1242 /* UNDEFINED LEVEL */
1244 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", s, level, optname));
1250 sock_set_errno(sock, err);
1256 /* Now do the actual option processing */
1260 /* Level: SOL_SOCKET */
1264 /* The option flags */
1266 /* UNIMPL case SO_DEBUG: */
1267 /* UNIMPL case SO_DONTROUTE: */
1269 /* UNIMPL case SO_OOBINCLUDE: */
1273 #endif /* SO_REUSE */
1274 /* UNIMPL case SO_USELOOPBACK: */
1275 if ( *(int*)optval ) {
1276 sock->conn->pcb.tcp->so_options |= optname;
1278 sock->conn->pcb.tcp->so_options &= ~optname;
1280 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, optname=0x%x, ..) -> %s\n", s, optname, (*(int*)optval?"on":"off")));
1285 /* Level: IPPROTO_IP */
1289 sock->conn->pcb.tcp->ttl = (u8_t)(*(int*)optval);
1290 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TTL, ..) -> %u\n", s, sock->conn->pcb.tcp->ttl));
1293 sock->conn->pcb.tcp->tos = (u8_t)(*(int*)optval);
1294 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TOS, ..)-> %u\n", s, sock->conn->pcb.tcp->tos));
1299 /* Level: IPPROTO_TCP */
1303 if ( *(int*)optval ) {
1304 sock->conn->pcb.tcp->flags |= TF_NODELAY;
1306 sock->conn->pcb.tcp->flags &= ~TF_NODELAY;
1308 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_NODELAY) -> %s\n", s, (*(int *)optval)?"on":"off") );
1311 sock->conn->pcb.tcp->keepalive = (u32_t)(*(int*)optval);
1312 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPALIVE) -> %lu\n", s, sock->conn->pcb.tcp->keepalive));
1318 sock_set_errno(sock, err);
1319 return err ? -1 : 0;
1322 int lwip_ioctl(int s, long cmd, void *argp)
1324 struct lwip_socket *sock = get_socket(s);
1334 sock_set_errno(sock, EINVAL);
1338 *((u16_t*)argp) = sock->conn->recv_avail;
1340 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %u\n", s, argp, *((u16_t*)argp)));
1341 sock_set_errno(sock, 0);
1345 if (argp && *(u32_t*)argp)
1346 sock->flags |= O_NONBLOCK;
1348 sock->flags &= ~O_NONBLOCK;
1349 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONBIO, %d)\n", s, !!(sock->flags & O_NONBLOCK)));
1350 sock_set_errno(sock, 0);
1354 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, UNIMPL: 0x%lx, %p)\n", s, cmd, argp));
1355 sock_set_errno(sock, ENOSYS); /* not yet implemented */