modules/network/SMSTCPIP/sockets.c

   1 /*
   2  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   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.
  15  *
  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
  25  * OF SUCH DAMAGE.
  26  *
  27  * This file is part of the lwIP TCP/IP stack.
  28  *
  29  * Author: Adam Dunkels <adam@sics.se>
  30  *
  31  * Improved by Marc Boucher <marc@mbsi.ca> and David Haas <dhaas@alum.rpi.edu>
  32  *
  33  */
  34
  35 #include "lwip/opt.h"
  36 #include "lwip/api.h"
  37 #include "lwip/arch.h"
  38 #include "lwip/sys.h"
  39
  40 #include "lwip/sockets.h"
  41
  42 #include <thsemap.h>
  43 #include <sysclib.h>
  44 #include <errno.h>
  45
  46 #include "smsutils.h"
  47
  48 #define NUM_SOCKETS MEMP_NUM_NETCONN
  49
  50 struct lwip_socket {
  51   struct netconn *conn;
  52   struct netbuf *lastdata;
  53   u16_t lastoffset;
  54   u16_t rcvevent;
  55   u16_t sendevent;
  56   u16_t  flags;
  57   int err;
  58 };
  59
  60 struct lwip_select_cb
  61 {
  62     struct lwip_select_cb *next;
  63     fd_set *readset;
  64     fd_set *writeset;
  65     fd_set *exceptset;
  66     int sem_signalled;
  67     sys_sem_t sem;
  68 };
  69
  70 static struct lwip_socket sockets[NUM_SOCKETS];
  71 static struct lwip_select_cb *select_cb_list = 0;
  72
  73 static sys_sem_t socksem = 0;
  74 static sys_sem_t selectsem = 0;
  75
  76 static void
  77 event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len);
  78
  79 static int err_to_errno_table[11] = {
  80     0,      /* ERR_OK    0      No error, everything OK. */
  81     ENOMEM,    /* ERR_MEM  -1      Out of memory error.     */
  82     ENOBUFS,    /* ERR_BUF  -2      Buffer error.            */
  83     ECONNABORTED,  /* ERR_ABRT -3      Connection aborted.      */
  84     ECONNRESET,    /* ERR_RST  -4      Connection reset.        */
  85     ESHUTDOWN,    /* ERR_CLSD -5      Connection closed.       */
  86     ENOTCONN,    /* ERR_CONN -6      Not connected.           */
  87     EINVAL,    /* ERR_VAL  -7      Illegal value.           */
  88     EIO,    /* ERR_ARG  -8      Illegal argument.        */
  89     EHOSTUNREACH,  /* ERR_RTE  -9      Routing problem.         */
  90     EADDRINUSE    /* ERR_USE  -10     Address in use.          */
  91 };
  92
  93 #define err_to_errno(err) \
  94   ((err) < (sizeof(err_to_errno_table)/sizeof(int))) ? \
  95     err_to_errno_table[-(err)] : EIO
  96
  97 #ifdef ERRNO
  98 #define set_errno(err) errno = (err)
  99 #else
 100 #define set_errno(err)
 101 #endif
 102
 103 #define sock_set_errno(sk, e) do { \
 104       sk->err = (e); \
 105       set_errno(sk->err); \
 106 } while (0)
 107
 108
 109 static struct lwip_socket *
 110 get_socket(int s)
 111 {
 112   struct lwip_socket *sock;
 113
 114   if ((s < 0) || (s > NUM_SOCKETS)) {
 115     LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s));
 116     set_errno(EBADF);
 117     return NULL;
 118   }
 119
 120   sock = &sockets[s];
 121
 122   if (!sock->conn) {
 123     LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s));
 124     set_errno(EBADF);
 125     return NULL;
 126   }
 127
 128   return sock;
 129 }
 130
 131 static int
 132 alloc_socket(struct netconn *newconn)
 133 {
 134   int i;
 135
 136   if (!socksem)
 137       socksem = sys_sem_new(1);
 138
 139   /* Protect socket array */
 140   sys_sem_wait(socksem);
 141
 142   /* allocate a new socket identifier */
 143   for(i = 0; i < NUM_SOCKETS; ++i) {
 144     if (!sockets[i].conn) {
 145       sockets[i].conn = newconn;
 146       sockets[i].lastdata = NULL;
 147       sockets[i].lastoffset = 0;
 148       sockets[i].rcvevent = 0;
 149       sockets[i].sendevent = 1; /* TCP send buf is empty */
 150       sockets[i].flags = 0;
 151       sockets[i].err = 0;
 152       sys_sem_signal(socksem);
 153       return i;
 154     }
 155   }
 156   sys_sem_signal(socksem);
 157   return -1;
 158 }
 159
 160 int
 161 lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
 162 {
 163   struct lwip_socket *sock;
 164   struct netconn *newconn;
 165   struct ip_addr naddr;
 166   u16_t port;
 167   int newsock;
 168   struct sockaddr_in sin;
 169
 170   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s));
 171   sock = get_socket(s);
 172   if (!sock) {
 173     set_errno(EBADF);
 174     return -1;
 175   }
 176
 177   newconn = netconn_accept(sock->conn);
 178
 179   /* get the IP address and port of the remote host */
 180   netconn_peer(newconn, &naddr, &port);
 181
 182   mips_memset(&sin, 0, sizeof(sin));
 183   sin.sin_len = sizeof(sin);
 184   sin.sin_family = AF_INET;
 185   sin.sin_port = htons(port);
 186   sin.sin_addr.s_addr = naddr.addr;
 187
 188   if (*addrlen > sizeof(sin))
 189       *addrlen = sizeof(sin);
 190
 191   mips_memcpy(addr, &sin, *addrlen);
 192
 193   newsock = alloc_socket(newconn);
 194   if (newsock == -1) {
 195     netconn_delete(newconn);
 196   sock_set_errno(sock, ENOBUFS);
 197   return -1;
 198   }
 199   newconn->callback = event_callback;
 200   sock = get_socket(newsock);
 201
 202   sys_sem_wait(socksem);
 203   sock->rcvevent += -1 - newconn->socket;
 204   newconn->socket = newsock;
 205   sys_sem_signal(socksem);
 206
 207   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d addr=", s, newsock));
 208   ip_addr_debug_print(SOCKETS_DEBUG, &naddr);
 209   LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u\n", port));
 210
 211   sock_set_errno(sock, 0);
 212   return newsock;
 213 }
 214
 215 int
 216 lwip_bind(int s, struct sockaddr *name, socklen_t namelen)
 217 {
 218   struct lwip_socket *sock;
 219   struct ip_addr local_addr;
 220   u16_t local_port;
 221   err_t err;
 222
 223   sock = get_socket(s);
 224   if (!sock) {
 225     set_errno(EBADF);
 226     return -1;
 227   }
 228
 229   local_addr.addr = ((struct sockaddr_in *)name)->sin_addr.s_addr;
 230   local_port = ((struct sockaddr_in *)name)->sin_port;
 231
 232   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d, addr=", s));
 233   ip_addr_debug_print(SOCKETS_DEBUG, &local_addr);
 234   LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u)\n", ntohs(local_port)));
 235
 236   err = netconn_bind(sock->conn, &local_addr, ntohs(local_port));
 237
 238   if (err != ERR_OK) {
 239     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err));
 240     sock_set_errno(sock, err_to_errno(err));
 241     return -1;
 242   }
 243
 244   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s));
 245   sock_set_errno(sock, 0);
 246   return 0;
 247 }
 248
 249 int
 250 lwip_close(int s)
 251 {
 252   struct lwip_socket *sock;
 253
 254   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_close(%d)\n", s));
 255   if (!socksem)
 256       socksem = sys_sem_new(1);
 257
 258   /* We cannot allow multiple closes of the same socket. */
 259   sys_sem_wait(socksem);
 260
 261   sock = get_socket(s);
 262   if (!sock) {
 263       sys_sem_signal(socksem);
 264       set_errno(EBADF);
 265       return -1;
 266   }
 267
 268   netconn_delete(sock->conn);
 269   if (sock->lastdata) {
 270     netbuf_delete(sock->lastdata);
 271   }
 272   sock->lastdata = NULL;
 273   sock->lastoffset = 0;
 274   sock->conn = NULL;
 275   sys_sem_signal(socksem);
 276   sock_set_errno(sock, 0);
 277   return 0;
 278 }
 279
 280 int
 281 lwip_connect(int s, struct sockaddr *name, socklen_t namelen)
 282 {
 283   struct lwip_socket *sock;
 284   err_t err;
 285
 286   sock = get_socket(s);
 287   if (!sock) {
 288     set_errno(EBADF);
 289     return -1;
 290   }
 291
 292   if (((struct sockaddr_in *)name)->sin_family == AF_UNSPEC) {
 293     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, AF_UNSPEC)\n", s));
 294     err = netconn_disconnect(sock->conn);
 295   } else {
 296     struct ip_addr remote_addr;
 297     u16_t remote_port;
 298
 299     remote_addr.addr = ((struct sockaddr_in *)name)->sin_addr.s_addr;
 300     remote_port = ((struct sockaddr_in *)name)->sin_port;
 301
 302     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, addr=", s));
 303     ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr);
 304     LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u)\n", ntohs(remote_port)));
 305
 306     err = netconn_connect(sock->conn, &remote_addr, ntohs(remote_port));
 307    }
 308
 309   if (err != ERR_OK) {
 310     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) failed, err=%d\n", s, err));
 311     sock_set_errno(sock, err_to_errno(err));
 312     return -1;
 313   }
 314
 315   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) succeeded\n", s));
 316   sock_set_errno(sock, 0);
 317   return 0;
 318 }
 319
 320 int
 321 lwip_listen(int s, int backlog)
 322 {
 323   struct lwip_socket *sock;
 324   err_t err;
 325
 326   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d, backlog=%d)\n", s, backlog));
 327   sock = get_socket(s);
 328   if (!sock) {
 329     set_errno(EBADF);
 330     return -1;
 331   }
 332
 333   err = netconn_listen(sock->conn);
 334
 335   if (err != ERR_OK) {
 336     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d) failed, err=%d\n", s, err));
 337     sock_set_errno(sock, err_to_errno(err));
 338     return -1;
 339   }
 340
 341   sock_set_errno(sock, 0);
 342   return 0;
 343 }
 344
 345 int
 346 lwip_recvfrom(int s, void *header, int index, void *payload, int plen, unsigned int flags,
 347         struct sockaddr *from, socklen_t *fromlen)
 348 {
 349   struct lwip_socket *sock;
 350   struct netbuf *buf;
 351   u16_t avail_len, copylen = 0;
 352   struct ip_addr *addr;
 353   u16_t port;
 354
 355
 356   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d, %p, %d, 0x%x, ..)\n", s, payload, plen, flags));
 357   sock = get_socket(s);
 358   if (!sock) {
 359     set_errno(EBADF);
 360     return -1;
 361   }
 362
 363   /* Check if there is data left from the last recv operation. */
 364   if (sock->lastdata) {
 365     buf = sock->lastdata;
 366   } else {
 367     /* If this is non-blocking call, then check first */
 368     if (((flags & MSG_DONTWAIT) || (sock->flags & O_NONBLOCK))
 369   && !sock->rcvevent)
 370     {
 371       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): returning EWOULDBLOCK\n", s));
 372       sock_set_errno(sock, EWOULDBLOCK);
 373       return -1;
 374     }
 375
 376     /* No data was left from the previous operation, so we try to get
 377        some from the network. */
 378     buf = netconn_recv(sock->conn);
 379
 380     if (!buf) {
 381       /* We should really do some error checking here. */
 382       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL!\n", s));
 383       sock_set_errno(sock, 0);
 384       return 0;
 385     }
 386   }
 387
 388   avail_len = netbuf_len(buf);
 389
 390   avail_len -= sock->lastoffset;
 391
 392   /* copy the contents of the received buffer into
 393      the supplied memory pointer mem */
 394   if (index) {
 395     if (avail_len >= 63) { // header of READ ANDX RESPONSE is 63 + padding bytes, which are "0x00" thus useless
 396       netbuf_copy_partial(buf, header, 63, sock->lastoffset);
 397       index = ((u8_t*)header)[index] + 4;
 398       copylen = index;
 399       avail_len -= index;
 400     } else {
 401           netbuf_copy_partial(buf, header, avail_len, sock->lastoffset);
 402       copylen = avail_len;
 403           avail_len = 0;
 404     }
 405   }
 406
 407   if (avail_len) {
 408     if (plen > avail_len)
 409       plen = avail_len;
 410
 411     netbuf_copy_partial(buf, payload, plen, sock->lastoffset + index);
 412     copylen += plen;
 413     avail_len -= plen;
 414   }
 415
 416   /* Check to see from where the data was. */
 417   if (from && fromlen) {
 418     struct sockaddr_in sin;
 419
 420     addr = netbuf_fromaddr(buf);
 421     port = netbuf_fromport(buf);
 422
 423     mips_memset(&sin, 0, sizeof(sin));
 424     sin.sin_len = sizeof(sin);
 425     sin.sin_family = AF_INET;
 426     sin.sin_port = htons(port);
 427     sin.sin_addr.s_addr = addr->addr;
 428
 429     if (*fromlen > sizeof(sin))
 430       *fromlen = sizeof(sin);
 431
 432     mips_memcpy(from, &sin, *fromlen);
 433
 434     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s));
 435     ip_addr_debug_print(SOCKETS_DEBUG, addr);
 436     LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u len=%u\n", port, copylen));
 437   } else {
 438 #if SOCKETS_DEBUG > 0
 439     addr = netbuf_fromaddr(buf);
 440     port = netbuf_fromport(buf);
 441
 442     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s));
 443     ip_addr_debug_print(SOCKETS_DEBUG, addr);
 444     LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u len=%u\n", port, copylen));
 445 #endif
 446   }
 447
 448   /* If this is a TCP socket, check if there is data left in the
 449      buffer. If so, it should be saved in the sock structure for next
 450      time around. */
 451   if (netconn_type(sock->conn) == NETCONN_TCP && avail_len > 0) {
 452     sock->lastdata = buf;
 453     sock->lastoffset += copylen;
 454   } else {
 455     sock->lastdata = NULL;
 456     sock->lastoffset = 0;
 457     netbuf_delete(buf);
 458   }
 459
 460   sock_set_errno(sock, 0);
 461   return copylen;
 462 }
 463
 464 int
 465 lwip_read(int s, void *mem, int len)
 466 {
 467   return lwip_recvfrom(s, NULL, 0, mem, len, 0, NULL, NULL);
 468 }
 469
 470 int
 471 lwip_recv(int s, void *mem, int len, unsigned int flags)
 472 {
 473   return lwip_recvfrom(s, NULL, 0, mem, len, flags, NULL, NULL);
 474 }
 475
 476 int
 477 lwip_send(int s, void *data, int size, unsigned int flags)
 478 {
 479   struct lwip_socket *sock;
 480   struct netbuf *buf;
 481   err_t err;
 482
 483   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d, data=%p, size=%d, flags=0x%x)\n", s, data, size, flags));
 484
 485   sock = get_socket(s);
 486   if (!sock) {
 487     set_errno(EBADF);
 488     return -1;
 489   }
 490
 491   switch (netconn_type(sock->conn)) {
 492   case NETCONN_RAW:
 493   case NETCONN_UDP:
 494   case NETCONN_UDPLITE:
 495   case NETCONN_UDPNOCHKSUM:
 496     /* create a buffer */
 497     buf = netbuf_new();
 498
 499     if (!buf) {
 500       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) ENOBUFS\n", s));
 501       sock_set_errno(sock, ENOBUFS);
 502       return -1;
 503     }
 504
 505     /* make the buffer point to the data that should
 506        be sent */
 507     netbuf_ref(buf, data, size);
 508
 509     /* send the data */
 510     err = netconn_send(sock->conn, buf);
 511
 512     /* deallocated the buffer */
 513     netbuf_delete(buf);
 514     break;
 515   case NETCONN_TCP:
 516     err = netconn_write(sock->conn, data, size, NETCONN_COPY);
 517     break;
 518   default:
 519     err = ERR_ARG;
 520     break;
 521   }
 522   if (err != ERR_OK) {
 523     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) err=%d\n", s, err));
 524     sock_set_errno(sock, err_to_errno(err));
 525     return -1;
 526   }
 527
 528   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) ok size=%d\n", s, size));
 529   sock_set_errno(sock, 0);
 530   return size;
 531 }
 532
 533 int
 534 lwip_sendto(int s, void *data, int size, unsigned int flags,
 535        struct sockaddr *to, socklen_t tolen)
 536 {
 537   struct lwip_socket *sock;
 538   struct ip_addr remote_addr, addr;
 539   u16_t remote_port, port;
 540   int ret,connected;
 541
 542   sock = get_socket(s);
 543   if (!sock) {
 544     set_errno(EBADF);
 545     return -1;
 546   }
 547
 548   /* get the peer if currently connected */
 549   connected = (netconn_peer(sock->conn, &addr, &port) == ERR_OK);
 550
 551   remote_addr.addr = ((struct sockaddr_in *)to)->sin_addr.s_addr;
 552   remote_port = ((struct sockaddr_in *)to)->sin_port;
 553
 554   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_sendto(%d, data=%p, size=%d, flags=0x%x to=", s, data, size, flags));
 555   ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr);
 556   LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u\n", ntohs(remote_port)));
 557
 558   netconn_connect(sock->conn, &remote_addr, ntohs(remote_port));
 559
 560   ret = lwip_send(s, data, size, flags);
 561
 562   /* reset the remote address and port number
 563      of the connection */
 564   if (connected)
 565     netconn_connect(sock->conn, &addr, port);
 566   else
 567   netconn_disconnect(sock->conn);
 568   return ret;
 569 }
 570
 571 int
 572 lwip_socket(int domain, int type, int protocol)
 573 {
 574   struct netconn *conn;
 575   int i;
 576
 577   /* create a netconn */
 578   switch (type) {
 579   case SOCK_RAW:
 580     conn = netconn_new_with_proto_and_callback(NETCONN_RAW, protocol, event_callback);
 581     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_RAW, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
 582     break;
 583   case SOCK_DGRAM:
 584     conn = netconn_new_with_callback(NETCONN_UDP, event_callback);
 585     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_DGRAM, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
 586     break;
 587   case SOCK_STREAM:
 588     conn = netconn_new_with_callback(NETCONN_TCP, event_callback);
 589     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_STREAM, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol));
 590     break;
 591   default:
 592     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%d, %d/UNKNOWN, %d) = -1\n", domain, type, protocol));
 593     set_errno(EINVAL);
 594     return -1;
 595   }
 596
 597   if (!conn) {
 598     LWIP_DEBUGF(SOCKETS_DEBUG, ("-1 / ENOBUFS (could not create netconn)\n"));
 599     set_errno(ENOBUFS);
 600     return -1;
 601   }
 602
 603   i = alloc_socket(conn);
 604
 605   if (i == -1) {
 606     netconn_delete(conn);
 607   set_errno(ENOBUFS);
 608   return -1;
 609   }
 610   conn->socket = i;
 611   LWIP_DEBUGF(SOCKETS_DEBUG, ("%d\n", i));
 612   set_errno(0);
 613   return i;
 614 }
 615
 616 int
 617 lwip_write(int s, void *data, int size)
 618 {
 619    return lwip_send(s, data, size, 0);
 620 }
 621
 622
 623 static int
 624 lwip_selscan(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset)
 625 {
 626     int i, nready = 0;
 627     fd_set lreadset, lwriteset, lexceptset;
 628     struct lwip_socket *p_sock;
 629
 630     FD_ZERO(&lreadset);
 631     FD_ZERO(&lwriteset);
 632     FD_ZERO(&lexceptset);
 633
 634     /* Go through each socket in each list to count number of sockets which
 635        currently match */
 636     for(i = 0; i < maxfdp1; i++)
 637     {
 638         if (FD_ISSET(i, readset))
 639         {
 640             /* See if netconn of this socket is ready for read */
 641             p_sock = get_socket(i);
 642             if (p_sock && (p_sock->lastdata || p_sock->rcvevent))
 643             {
 644                 FD_SET(i, &lreadset);
 645                 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for reading\n", i));
 646                 nready++;
 647             }
 648         }
 649         if (FD_ISSET(i, writeset))
 650         {
 651             /* See if netconn of this socket is ready for write */
 652             p_sock = get_socket(i);
 653             if (p_sock && p_sock->sendevent)
 654             {
 655                 FD_SET(i, &lwriteset);
 656                 LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for writing\n", i));
 657                 nready++;
 658             }
 659         }
 660     }
 661     *readset = lreadset;
 662     *writeset = lwriteset;
 663     FD_ZERO(exceptset);
 664
 665     return nready;
 666 }
 667
 668 int
 669 lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
 670                struct timeval *timeout)
 671 {
 672     int i;
 673     int nready;
 674     fd_set lreadset, lwriteset, lexceptset;
 675     u32_t msectimeout;
 676     struct lwip_select_cb select_cb;
 677     struct lwip_select_cb *p_selcb;
 678
 679     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));
 680
 681     select_cb.next = 0;
 682     select_cb.readset = readset;
 683     select_cb.writeset = writeset;
 684     select_cb.exceptset = exceptset;
 685     select_cb.sem_signalled = 0;
 686
 687     /* Protect ourselves searching through the list */
 688     if (!selectsem)
 689         selectsem = sys_sem_new(1);
 690     sys_sem_wait(selectsem);
 691
 692     if (readset)
 693         lreadset = *readset;
 694     else
 695         FD_ZERO(&lreadset);
 696     if (writeset)
 697         lwriteset = *writeset;
 698     else
 699         FD_ZERO(&lwriteset);
 700     if (exceptset)
 701         lexceptset = *exceptset;
 702     else
 703         FD_ZERO(&lexceptset);
 704
 705     /* Go through each socket in each list to count number of sockets which
 706        currently match */
 707     nready = lwip_selscan(maxfdp1, &lreadset, &lwriteset, &lexceptset);
 708
 709     /* If we don't have any current events, then suspend if we are supposed to */
 710     if (!nready)
 711     {
 712         if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0)
 713         {
 714             sys_sem_signal(selectsem);
 715             if (readset)
 716                 FD_ZERO(readset);
 717             if (writeset)
 718                 FD_ZERO(writeset);
 719             if (exceptset)
 720                 FD_ZERO(exceptset);
 721
 722             LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: no timeout, returning 0\n"));
 723             set_errno(0);
 724
 725             return 0;
 726         }
 727
 728         /* add our semaphore to list */
 729         /* We don't actually need any dynamic memory. Our entry on the
 730          * list is only valid while we are in this function, so it's ok
 731          * to use local variables */
 732
 733         select_cb.sem = sys_sem_new(0);
 734         /* Note that we are still protected */
 735         /* Put this select_cb on top of list */
 736         select_cb.next = select_cb_list;
 737         select_cb_list = &select_cb;
 738
 739         /* Now we can safely unprotect */
 740         sys_sem_signal(selectsem);
 741
 742         /* Now just wait to be woken */
 743         if (timeout == 0)
 744             /* Wait forever */
 745             msectimeout = 0;
 746         else
 747             msectimeout =  ((timeout->tv_sec * 1000) + ((timeout->tv_usec + 500)/1000));
 748
 749         i = sys_sem_wait_timeout(select_cb.sem, msectimeout);
 750
 751         /* Take us off the list */
 752         sys_sem_wait(selectsem);
 753         if (select_cb_list == &select_cb)
 754             select_cb_list = select_cb.next;
 755         else
 756             for (p_selcb = select_cb_list; p_selcb; p_selcb = p_selcb->next)
 757                 if (p_selcb->next == &select_cb)
 758                 {
 759                     p_selcb->next = select_cb.next;
 760                     break;
 761                 }
 762
 763         sys_sem_signal(selectsem);
 764
 765         sys_sem_free(select_cb.sem);
 766         if (i == 0)             /* Timeout */
 767         {
 768             if (readset)
 769                 FD_ZERO(readset);
 770             if (writeset)
 771                 FD_ZERO(writeset);
 772             if (exceptset)
 773                 FD_ZERO(exceptset);
 774
 775             LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: timeout expired\n"));
 776             set_errno(0);
 777
 778             return 0;
 779         }
 780
 781         if (readset)
 782             lreadset = *readset;
 783         else
 784             FD_ZERO(&lreadset);
 785         if (writeset)
 786             lwriteset = *writeset;
 787         else
 788             FD_ZERO(&lwriteset);
 789         if (exceptset)
 790             lexceptset = *exceptset;
 791         else
 792             FD_ZERO(&lexceptset);
 793
 794         /* See what's set */
 795         nready = lwip_selscan(maxfdp1, &lreadset, &lwriteset, &lexceptset);
 796     }
 797     else
 798         sys_sem_signal(selectsem);
 799
 800     if (readset)
 801         *readset = lreadset;
 802     if (writeset)
 803         *writeset = lwriteset;
 804     if (exceptset)
 805         *exceptset = lexceptset;
 806
 807     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: nready=%d\n", nready));
 808     set_errno(0);
 809
 810     return nready;
 811 }
 812
 813
 814 static void
 815 event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
 816 {
 817     int s;
 818     struct lwip_socket *sock;
 819     struct lwip_select_cb *scb;
 820
 821     /* Get socket */
 822     if (conn)
 823     {
 824         s = conn->socket;
 825         if (s < 0)
 826         {
 827             /* Data comes in right away after an accept, even though
 828              * the server task might not have created a new socket yet.
 829              * Just count down (or up) if that's the case and we
 830              * will use the data later. Note that only receive events
 831              * can happen before the new socket is set up. */
 832             if (evt == NETCONN_EVT_RCVPLUS)
 833                 conn->socket--;
 834             return;
 835         }
 836
 837         sock = get_socket(s);
 838         if (!sock)
 839             return;
 840     }
 841     else
 842         return;
 843
 844     if (!selectsem)
 845         selectsem = sys_sem_new(1);
 846
 847     sys_sem_wait(selectsem);
 848     /* Set event as required */
 849     switch (evt)
 850     {
 851       case NETCONN_EVT_RCVPLUS:
 852         sock->rcvevent++;
 853         break;
 854       case NETCONN_EVT_RCVMINUS:
 855         sock->rcvevent--;
 856         break;
 857       case NETCONN_EVT_SENDPLUS:
 858         sock->sendevent = 1;
 859         break;
 860       case NETCONN_EVT_SENDMINUS:
 861         sock->sendevent = 0;
 862         break;
 863     }
 864     sys_sem_signal(selectsem);
 865
 866     /* Now decide if anyone is waiting for this socket */
 867     /* NOTE: This code is written this way to protect the select link list
 868        but to avoid a deadlock situation by releasing socksem before
 869        signalling for the select. This means we need to go through the list
 870        multiple times ONLY IF a select was actually waiting. We go through
 871        the list the number of waiting select calls + 1. This list is
 872        expected to be small. */
 873     while (1)
 874     {
 875         sys_sem_wait(selectsem);
 876         for (scb = select_cb_list; scb; scb = scb->next)
 877         {
 878             if (scb->sem_signalled == 0)
 879             {
 880                 /* Test this select call for our socket */
 881                 if (scb->readset && FD_ISSET(s, scb->readset))
 882                     if (sock->rcvevent)
 883                         break;
 884                 if (scb->writeset && FD_ISSET(s, scb->writeset))
 885                     if (sock->sendevent)
 886                         break;
 887             }
 888         }
 889         if (scb)
 890         {
 891             scb->sem_signalled = 1;
 892             sys_sem_signal(selectsem);
 893             sys_sem_signal(scb->sem);
 894         } else {
 895             sys_sem_signal(selectsem);
 896             break;
 897         }
 898     }
 899
 900 }
 901
 902
 903
 904
 905 int lwip_shutdown(int s, int how)
 906 {
 907   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_shutdown(%d, how=%d)\n", s, how));
 908   return lwip_close(s); /* XXX temporary hack until proper implementation */
 909 }
 910
 911 int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen)
 912 {
 913   struct lwip_socket *sock;
 914   struct sockaddr_in sin;
 915   struct ip_addr naddr;
 916
 917   sock = get_socket(s);
 918   if (!sock) {
 919     set_errno(EBADF);
 920     return -1;
 921   }
 922
 923   mips_memset(&sin, 0, sizeof(sin));
 924   sin.sin_len = sizeof(sin);
 925   sin.sin_family = AF_INET;
 926
 927   /* get the IP address and port of the remote host */
 928   netconn_peer(sock->conn, &naddr, &sin.sin_port);
 929
 930   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getpeername(%d, addr=", s));
 931   ip_addr_debug_print(SOCKETS_DEBUG, &naddr);
 932   LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%d)\n", sin.sin_port));
 933
 934   sin.sin_port = htons(sin.sin_port);
 935   sin.sin_addr.s_addr = naddr.addr;
 936
 937   if (*namelen > sizeof(sin))
 938       *namelen = sizeof(sin);
 939
 940   mips_memcpy(name, &sin, *namelen);
 941   sock_set_errno(sock, 0);
 942   return 0;
 943 }
 944
 945 int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen)
 946 {
 947   struct lwip_socket *sock;
 948   struct sockaddr_in sin;
 949   struct ip_addr *naddr;
 950
 951   sock = get_socket(s);
 952   if (!sock) {
 953     set_errno(EBADF);
 954     return -1;
 955   }
 956
 957   mips_memset(&sin, 0, sizeof(sin));
 958   sin.sin_len = sizeof(sin);
 959   sin.sin_family = AF_INET;
 960
 961   /* get the IP address and port of the remote host */
 962   netconn_addr(sock->conn, &naddr, &sin.sin_port);
 963
 964   LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockname(%d, addr=", s));
 965   ip_addr_debug_print(SOCKETS_DEBUG, naddr);
 966   LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%d)\n", sin.sin_port));
 967
 968   sin.sin_port = htons(sin.sin_port);
 969   sin.sin_addr.s_addr = naddr->addr;
 970
 971   if (*namelen > sizeof(sin))
 972       *namelen = sizeof(sin);
 973
 974   mips_memcpy(name, &sin, *namelen);
 975   sock_set_errno(sock, 0);
 976   return 0;
 977 }
 978
 979 int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen)
 980 {
 981   int err = 0;
 982   struct lwip_socket *sock = get_socket(s);
 983
 984   if(!sock) {
 985         set_errno(EBADF);
 986     return -1;
 987   }
 988
 989   if( NULL == optval || NULL == optlen ) {
 990     sock_set_errno( sock, EFAULT );
 991     return -1;
 992   }
 993
 994   /* Do length and type checks for the various options first, to keep it readable. */
 995   switch( level ) {
 996
 997 /* Level: SOL_SOCKET */
 998   case SOL_SOCKET:
 999       switch(optname) {
1000
1001       case SO_ACCEPTCONN:
1002       case SO_BROADCAST:
1003       /* UNIMPL case SO_DEBUG: */
1004       /* UNIMPL case SO_DONTROUTE: */
1005       case SO_ERROR:
1006       case SO_KEEPALIVE:
1007       /* UNIMPL case SO_OOBINLINE: */
1008       /* UNIMPL case SO_RCVBUF: */
1009       /* UNIMPL case SO_SNDBUF: */
1010       /* UNIMPL case SO_RCVLOWAT: */
1011       /* UNIMPL case SO_SNDLOWAT: */
1012 #ifdef SO_REUSE
1013       case SO_REUSEADDR:
1014       case SO_REUSEPORT:
1015 #endif /* SO_REUSE */
1016       case SO_TYPE:
1017       /* UNIMPL case SO_USELOOPBACK: */
1018         if( *optlen < sizeof(int) ) {
1019           err = EINVAL;
1020         }
1021           break;
1022
1023       default:
1024         LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", s, optname));
1025         err = ENOPROTOOPT;
1026       }  /* switch */
1027       break;
1028
1029 /* Level: IPPROTO_IP */
1030   case IPPROTO_IP:
1031       switch(optname) {
1032       /* UNIMPL case IP_HDRINCL: */
1033       /* UNIMPL case IP_RCVDSTADDR: */
1034       /* UNIMPL case IP_RCVIF: */
1035       case IP_TTL:
1036       case IP_TOS:
1037         if( *optlen < sizeof(int) ) {
1038           err = EINVAL;
1039         }
1040         break;
1041
1042       default:
1043         LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1044         err = ENOPROTOOPT;
1045       }  /* switch */
1046       break;
1047
1048 /* Level: IPPROTO_TCP */
1049   case IPPROTO_TCP:
1050       if( *optlen < sizeof(int) ) {
1051         err = EINVAL;
1052         break;
1053     }
1054
1055       /* If this is no TCP socket, ignore any options. */
1056       if ( sock->conn->type != NETCONN_TCP ) return 0;
1057
1058       switch( optname ) {
1059       case TCP_NODELAY:
1060       case TCP_KEEPALIVE:
1061       case TCP_ACKNODELAY:
1062       case TCP_EVENSEG:
1063         break;
1064
1065       default:
1066         LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1067         err = ENOPROTOOPT;
1068       }  /* switch */
1069       break;
1070
1071 /* UNDEFINED LEVEL */
1072   default:
1073       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", s, level, optname));
1074       err = ENOPROTOOPT;
1075   }  /* switch */
1076
1077
1078   if( 0 != err ) {
1079     sock_set_errno(sock, err);
1080     return -1;
1081   }
1082
1083
1084
1085   /* Now do the actual option processing */
1086
1087   switch(level) {
1088
1089 /* Level: SOL_SOCKET */
1090   case SOL_SOCKET:
1091     switch( optname ) {
1092
1093     /* The option flags */
1094     case SO_ACCEPTCONN:
1095     case SO_BROADCAST:
1096     /* UNIMPL case SO_DEBUG: */
1097     /* UNIMPL case SO_DONTROUTE: */
1098     case SO_KEEPALIVE:
1099     /* UNIMPL case SO_OOBINCLUDE: */
1100 #ifdef SO_REUSE
1101     case SO_REUSEADDR:
1102     case SO_REUSEPORT:
1103 #endif /* SO_REUSE */
1104     /*case SO_USELOOPBACK: UNIMPL */
1105       *(int*)optval = sock->conn->pcb.tcp->so_options & optname;
1106       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, optname=0x%x, ..) = %s\n", s, optname, (*(int*)optval?"on":"off")));
1107       break;
1108
1109     case SO_TYPE:
1110       switch (sock->conn->type) {
1111       case NETCONN_RAW:
1112         *(int*)optval = SOCK_RAW;
1113         break;
1114       case NETCONN_TCP:
1115         *(int*)optval = SOCK_STREAM;
1116         break;
1117       case NETCONN_UDP:
1118       case NETCONN_UDPLITE:
1119       case NETCONN_UDPNOCHKSUM:
1120         *(int*)optval = SOCK_DGRAM;
1121         break;
1122       default: /* unrecognized socket type */
1123         *(int*)optval = sock->conn->type;
1124         LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n", s, *(int *)optval));
1125       }  /* switch */
1126       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE) = %d\n", s, *(int *)optval));
1127       break;
1128
1129     case SO_ERROR:
1130       *(int *)optval = sock->err;
1131       sock->err = 0;
1132       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_ERROR) = %d\n", s, *(int *)optval));
1133       break;
1134     }  /* switch */
1135     break;
1136
1137 /* Level: IPPROTO_IP */
1138   case IPPROTO_IP:
1139     switch( optname ) {
1140     case IP_TTL:
1141       *(int*)optval = sock->conn->pcb.tcp->ttl;
1142       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TTL) = %d\n", s, *(int *)optval));
1143       break;
1144     case IP_TOS:
1145       *(int*)optval = sock->conn->pcb.tcp->tos;
1146       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TOS) = %d\n", s, *(int *)optval));
1147       break;
1148     }  /* switch */
1149     break;
1150
1151 /* Level: IPPROTO_TCP */
1152   case IPPROTO_TCP:
1153     switch( optname ) {
1154     case TCP_NODELAY:
1155       *(int*)optval = (sock->conn->pcb.tcp->flags & TF_NODELAY);
1156       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_NODELAY) = %s\n", s, (*(int*)optval)?"on":"off") );
1157       break;
1158     case TCP_KEEPALIVE:
1159       *(int*)optval = sock->conn->pcb.tcp->keepalive;
1160       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPALIVE) = %d\n", s, *(int *)optval));
1161       break;
1162     case TCP_ACKNODELAY:
1163       *(int*)optval = sock->conn->pcb.tcp->flags & TF_ACKNODELAY;
1164       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_ACKNODELAY) = %s\n", s, (*(int *)optval)?"on":"off") );
1165       break;
1166     case TCP_EVENSEG:
1167       *(int*)optval = sock->conn->pcb.tcp->flags & TF_EVENSEG;
1168       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_EVENSEG) = %s\n", s, (*(int *)optval)?"on":"off") );
1169       break;
1170     }  /* switch */
1171     break;
1172   }
1173
1174
1175   sock_set_errno(sock, err);
1176   return err ? -1 : 0;
1177 }
1178
1179 int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen)
1180 {
1181   struct lwip_socket *sock = get_socket(s);
1182   int err = 0;
1183
1184   if(!sock) {
1185         set_errno(EBADF);
1186     return -1;
1187   }
1188
1189   if( NULL == optval ) {
1190     sock_set_errno( sock, EFAULT );
1191     return -1;
1192   }
1193
1194
1195   /* Do length and type checks for the various options first, to keep it readable. */
1196   switch( level ) {
1197
1198 /* Level: SOL_SOCKET */
1199   case SOL_SOCKET:
1200     switch(optname) {
1201
1202     case SO_BROADCAST:
1203     /* UNIMPL case SO_DEBUG: */
1204     /* UNIMPL case SO_DONTROUTE: */
1205     case SO_KEEPALIVE:
1206     /* UNIMPL case SO_OOBINLINE: */
1207     /* UNIMPL case SO_RCVBUF: */
1208     /* UNIMPL case SO_SNDBUF: */
1209     /* UNIMPL case SO_RCVLOWAT: */
1210     /* UNIMPL case SO_SNDLOWAT: */
1211 #ifdef SO_REUSE
1212     case SO_REUSEADDR:
1213     case SO_REUSEPORT:
1214 #endif /* SO_REUSE */
1215     /* UNIMPL case SO_USELOOPBACK: */
1216       if( optlen < sizeof(int) ) {
1217         err = EINVAL;
1218       }
1219       break;
1220     default:
1221       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", s, optname));
1222       err = ENOPROTOOPT;
1223     }  /* switch */
1224     break;
1225
1226 /* Level: IPPROTO_IP */
1227   case IPPROTO_IP:
1228     switch(optname) {
1229     /* UNIMPL case IP_HDRINCL: */
1230     /* UNIMPL case IP_RCVDSTADDR: */
1231     /* UNIMPL case IP_RCVIF: */
1232     case IP_TTL:
1233     case IP_TOS:
1234       if( optlen < sizeof(int) ) {
1235         err = EINVAL;
1236       }
1237       break;
1238       default:
1239       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1240       err = ENOPROTOOPT;
1241     }  /* switch */
1242     break;
1243
1244 /* Level: IPPROTO_TCP */
1245   case IPPROTO_TCP:
1246     if( optlen < sizeof(int) ) {
1247       err = EINVAL;
1248         break;
1249     }
1250
1251     /* If this is no TCP socket, ignore any options. */
1252     if ( sock->conn->type != NETCONN_TCP ) return 0;
1253
1254     switch( optname ) {
1255     case TCP_NODELAY:
1256     case TCP_KEEPALIVE:
1257     case TCP_ACKNODELAY:
1258     case TCP_EVENSEG:
1259       break;
1260
1261     default:
1262       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", s, optname));
1263       err = ENOPROTOOPT;
1264     }  /* switch */
1265     break;
1266
1267 /* UNDEFINED LEVEL */
1268   default:
1269     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", s, level, optname));
1270     err = ENOPROTOOPT;
1271   }  /* switch */
1272
1273
1274   if( 0 != err ) {
1275     sock_set_errno(sock, err);
1276     return -1;
1277   }
1278
1279
1280
1281   /* Now do the actual option processing */
1282
1283   switch(level) {
1284
1285 /* Level: SOL_SOCKET */
1286   case SOL_SOCKET:
1287     switch(optname) {
1288
1289     /* The option flags */
1290     case SO_BROADCAST:
1291     /* UNIMPL case SO_DEBUG: */
1292     /* UNIMPL case SO_DONTROUTE: */
1293     case SO_KEEPALIVE:
1294     /* UNIMPL case SO_OOBINCLUDE: */
1295 #ifdef SO_REUSE
1296     case SO_REUSEADDR:
1297     case SO_REUSEPORT:
1298 #endif /* SO_REUSE */
1299     /* UNIMPL case SO_USELOOPBACK: */
1300       if ( *(int*)optval ) {
1301         sock->conn->pcb.tcp->so_options |= optname;
1302       } else {
1303         sock->conn->pcb.tcp->so_options &= ~optname;
1304       }
1305       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, optname=0x%x, ..) -> %s\n", s, optname, (*(int*)optval?"on":"off")));
1306       break;
1307     }  /* switch */
1308     break;
1309
1310 /* Level: IPPROTO_IP */
1311   case IPPROTO_IP:
1312     switch( optname ) {
1313     case IP_TTL:
1314       sock->conn->pcb.tcp->ttl = (u8_t)(*(int*)optval);
1315       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TTL, ..) -> %u\n", s, sock->conn->pcb.tcp->ttl));
1316       break;
1317     case IP_TOS:
1318       sock->conn->pcb.tcp->tos = (u8_t)(*(int*)optval);
1319       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TOS, ..)-> %u\n", s, sock->conn->pcb.tcp->tos));
1320       break;
1321     }  /* switch */
1322     break;
1323
1324 /* Level: IPPROTO_TCP */
1325   case IPPROTO_TCP:
1326     switch( optname ) {
1327     case TCP_NODELAY:
1328       if ( *(int*)optval ) {
1329         sock->conn->pcb.tcp->flags |= TF_NODELAY;
1330       } else {
1331         sock->conn->pcb.tcp->flags &= ~TF_NODELAY;
1332       }
1333       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_NODELAY) -> %s\n", s, (*(int *)optval)?"on":"off") );
1334       break;
1335     case TCP_KEEPALIVE:
1336       sock->conn->pcb.tcp->keepalive = (u32_t)(*(int*)optval);
1337       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPALIVE) -> %u\n", s, sock->conn->pcb.tcp->keepalive));
1338       break;
1339     case TCP_ACKNODELAY:
1340       if ( *(int*)optval ) {
1341         sock->conn->pcb.tcp->flags |= TF_ACKNODELAY;
1342       } else {
1343         sock->conn->pcb.tcp->flags &= ~TF_ACKNODELAY;
1344       }
1345       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_ACKNODELAY) -> %s\n", s, (*(int *)optval)?"on":"off") );
1346       break;
1347     case TCP_EVENSEG:
1348       if ( *(int*)optval ) {
1349         sock->conn->pcb.tcp->flags |= TF_EVENSEG;
1350       } else {
1351         sock->conn->pcb.tcp->flags &= ~TF_EVENSEG;
1352       }
1353       LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_EVENSEG) -> %s\n", s, (*(int *)optval)?"on":"off") );
1354       break;
1355     }  /* switch */
1356     break;
1357   }  /* switch */
1358
1359   sock_set_errno(sock, err);
1360   return err ? -1 : 0;
1361 }
1362
1363 int lwip_ioctl(int s, long cmd, void *argp)
1364 {
1365   struct lwip_socket *sock = get_socket(s);
1366
1367   if(!sock) {
1368         set_errno(EBADF);
1369     return -1;
1370   }
1371
1372   switch (cmd) {
1373   case FIONREAD:
1374     if (!argp) {
1375       sock_set_errno(sock, EINVAL);
1376       return -1;
1377     }
1378
1379     *((u16_t*)argp) = sock->conn->recv_avail;
1380
1381     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %u\n", s, argp, *((u16_t*)argp)));
1382     sock_set_errno(sock, 0);
1383     return 0;
1384
1385   case FIONBIO:
1386     if (argp && *(u32_t*)argp)
1387       sock->flags |= O_NONBLOCK;
1388     else
1389       sock->flags &= ~O_NONBLOCK;
1390     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONBIO, %d)\n", s, !!(sock->flags & O_NONBLOCK)));
1391     sock_set_errno(sock, 0);
1392     return 0;
1393
1394   default:
1395     LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, UNIMPL: 0x%lx, %p)\n", s, cmd, argp));
1396     sock_set_errno(sock, ENOSYS); /* not yet implemented */
1397     return -1;
1398   }
1399 }
1400