Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2001-2004 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 | */ |
| 32 | |
| 33 | #include "lwip/opt.h" |
| 34 | #include "lwip/arch.h" |
| 35 | #include "lwip/api_msg.h" |
| 36 | #include "lwip/memp.h" |
| 37 | #include "lwip/sys.h" |
| 38 | #include "lwip/tcpip.h" |
| 39 | |
| 40 | #if LWIP_RAW |
| 41 | static u8_t |
| 42 | recv_raw(void *arg, struct raw_pcb *pcb, struct pbuf *p, |
| 43 | struct ip_addr *addr) |
| 44 | { |
| 45 | struct netbuf *buf; |
| 46 | struct netconn *conn; |
| 47 | |
| 48 | conn = arg; |
| 49 | if (!conn) return 0; |
| 50 | |
| 51 | if (conn->recvmbox != SYS_MBOX_NULL) { |
| 52 | if (!(buf = memp_malloc(MEMP_NETBUF))) { |
| 53 | return 0; |
| 54 | } |
| 55 | pbuf_ref(p); |
| 56 | buf->p = p; |
| 57 | buf->ptr = p; |
| 58 | buf->fromaddr = addr; |
| 59 | buf->fromport = pcb->protocol; |
| 60 | |
| 61 | conn->recv_avail += p->tot_len; |
| 62 | /* Register event with callback */ |
| 63 | if (conn->callback) |
| 64 | (*conn->callback)(conn, NETCONN_EVT_RCVPLUS, p->tot_len); |
| 65 | sys_mbox_post(conn->recvmbox, buf); |
| 66 | } |
| 67 | |
| 68 | return 0; /* do not eat the packet */ |
| 69 | } |
| 70 | #endif |
| 71 | #if LWIP_UDP |
| 72 | static void |
| 73 | recv_udp(void *arg, struct udp_pcb *pcb, struct pbuf *p, |
| 74 | struct ip_addr *addr, u16_t port) |
| 75 | { |
| 76 | struct netbuf *buf; |
| 77 | struct netconn *conn; |
| 78 | |
| 79 | conn = arg; |
| 80 | |
| 81 | if (conn == NULL) { |
| 82 | pbuf_free(p); |
| 83 | return; |
| 84 | } |
| 85 | if (conn->recvmbox != SYS_MBOX_NULL) { |
| 86 | buf = memp_malloc(MEMP_NETBUF); |
| 87 | if (buf == NULL) { |
| 88 | pbuf_free(p); |
| 89 | return; |
| 90 | } else { |
| 91 | buf->p = p; |
| 92 | buf->ptr = p; |
| 93 | buf->fromaddr = addr; |
| 94 | buf->fromport = port; |
| 95 | } |
| 96 | |
| 97 | conn->recv_avail += p->tot_len; |
| 98 | /* Register event with callback */ |
| 99 | if (conn->callback) |
| 100 | (*conn->callback)(conn, NETCONN_EVT_RCVPLUS, p->tot_len); |
| 101 | sys_mbox_post(conn->recvmbox, buf); |
| 102 | } |
| 103 | } |
| 104 | #endif /* LWIP_UDP */ |
| 105 | #if LWIP_TCP |
| 106 | |
| 107 | static err_t |
| 108 | recv_tcp(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err) |
| 109 | { |
| 110 | struct netconn *conn; |
| 111 | u16_t len; |
| 112 | |
| 113 | conn = arg; |
| 114 | |
| 115 | if (conn == NULL) { |
| 116 | pbuf_free(p); |
| 117 | return ERR_VAL; |
| 118 | } |
| 119 | |
| 120 | if (conn->recvmbox != SYS_MBOX_NULL) { |
| 121 | |
| 122 | conn->err = err; |
| 123 | if (p != NULL) { |
| 124 | len = p->tot_len; |
| 125 | conn->recv_avail += len; |
| 126 | } |
| 127 | else |
| 128 | len = 0; |
| 129 | /* Register event with callback */ |
| 130 | if (conn->callback) |
| 131 | (*conn->callback)(conn, NETCONN_EVT_RCVPLUS, len); |
| 132 | sys_mbox_post(conn->recvmbox, p); |
| 133 | } |
| 134 | return ERR_OK; |
| 135 | } |
| 136 | |
| 137 | |
| 138 | static err_t |
| 139 | poll_tcp(void *arg, struct tcp_pcb *pcb) |
| 140 | { |
| 141 | struct netconn *conn; |
| 142 | |
| 143 | conn = arg; |
| 144 | if (conn != NULL && |
| 145 | (conn->state == NETCONN_WRITE || conn->state == NETCONN_CLOSE) && |
| 146 | conn->sem != SYS_SEM_NULL) { |
| 147 | sys_sem_signal(conn->sem); |
| 148 | } |
| 149 | return ERR_OK; |
| 150 | } |
| 151 | |
| 152 | static err_t |
| 153 | sent_tcp(void *arg, struct tcp_pcb *pcb, u16_t len) |
| 154 | { |
| 155 | struct netconn *conn; |
| 156 | |
| 157 | conn = arg; |
| 158 | if (conn != NULL && conn->sem != SYS_SEM_NULL) { |
| 159 | sys_sem_signal(conn->sem); |
| 160 | } |
| 161 | |
| 162 | if (conn && conn->callback) |
| 163 | if (tcp_sndbuf(conn->pcb.tcp) > TCP_SNDLOWAT) |
| 164 | (*conn->callback)(conn, NETCONN_EVT_SENDPLUS, len); |
| 165 | |
| 166 | return ERR_OK; |
| 167 | } |
| 168 | |
| 169 | static void |
| 170 | err_tcp(void *arg, err_t err) |
| 171 | { |
| 172 | struct netconn *conn; |
| 173 | |
| 174 | conn = arg; |
| 175 | |
| 176 | conn->pcb.tcp = NULL; |
| 177 | |
| 178 | |
| 179 | conn->err = err; |
| 180 | if (conn->recvmbox != SYS_MBOX_NULL) { |
| 181 | /* Register event with callback */ |
| 182 | if (conn->callback) |
| 183 | (*conn->callback)(conn, NETCONN_EVT_RCVPLUS, 0); |
| 184 | sys_mbox_post(conn->recvmbox, NULL); |
| 185 | } |
| 186 | if (conn->mbox != SYS_MBOX_NULL) { |
| 187 | sys_mbox_post(conn->mbox, NULL); |
| 188 | } |
| 189 | if (conn->acceptmbox != SYS_MBOX_NULL) { |
| 190 | /* Register event with callback */ |
| 191 | if (conn->callback) |
| 192 | (*conn->callback)(conn, NETCONN_EVT_RCVPLUS, 0); |
| 193 | sys_mbox_post(conn->acceptmbox, NULL); |
| 194 | } |
| 195 | if (conn->sem != SYS_SEM_NULL) { |
| 196 | sys_sem_signal(conn->sem); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | static void |
| 201 | setup_tcp(struct netconn *conn) |
| 202 | { |
| 203 | struct tcp_pcb *pcb; |
| 204 | |
| 205 | pcb = conn->pcb.tcp; |
| 206 | tcp_arg(pcb, conn); |
| 207 | tcp_recv(pcb, recv_tcp); |
| 208 | tcp_sent(pcb, sent_tcp); |
| 209 | tcp_poll(pcb, poll_tcp, 4); |
| 210 | tcp_err(pcb, err_tcp); |
| 211 | } |
| 212 | |
| 213 | static err_t |
| 214 | accept_function(void *arg, struct tcp_pcb *newpcb, err_t err) |
| 215 | { |
| 216 | sys_mbox_t mbox; |
| 217 | struct netconn *newconn; |
| 218 | struct netconn *conn; |
| 219 | |
| 220 | #if API_MSG_DEBUG |
| 221 | #if TCP_DEBUG |
| 222 | tcp_debug_print_state(newpcb->state); |
| 223 | #endif /* TCP_DEBUG */ |
| 224 | #endif /* API_MSG_DEBUG */ |
| 225 | conn = (struct netconn *)arg; |
| 226 | mbox = conn->acceptmbox; |
| 227 | newconn = memp_malloc(MEMP_NETCONN); |
| 228 | if (newconn == NULL) { |
| 229 | return ERR_MEM; |
| 230 | } |
| 231 | newconn->type = NETCONN_TCP; |
| 232 | newconn->pcb.tcp = newpcb; |
| 233 | setup_tcp(newconn); |
| 234 | newconn->recvmbox = sys_mbox_new(); |
| 235 | if (newconn->recvmbox == SYS_MBOX_NULL) { |
| 236 | memp_free(MEMP_NETCONN, newconn); |
| 237 | return ERR_MEM; |
| 238 | } |
| 239 | newconn->mbox = sys_mbox_new(); |
| 240 | if (newconn->mbox == SYS_MBOX_NULL) { |
| 241 | sys_mbox_free(newconn->recvmbox); |
| 242 | memp_free(MEMP_NETCONN, newconn); |
| 243 | return ERR_MEM; |
| 244 | } |
| 245 | newconn->sem = sys_sem_new(0); |
| 246 | if (newconn->sem == SYS_SEM_NULL) { |
| 247 | sys_mbox_free(newconn->recvmbox); |
| 248 | sys_mbox_free(newconn->mbox); |
| 249 | memp_free(MEMP_NETCONN, newconn); |
| 250 | return ERR_MEM; |
| 251 | } |
| 252 | newconn->acceptmbox = SYS_MBOX_NULL; |
| 253 | newconn->err = err; |
| 254 | /* Register event with callback */ |
| 255 | if (conn->callback) |
| 256 | { |
| 257 | (*conn->callback)(conn, NETCONN_EVT_RCVPLUS, 0); |
| 258 | /* We have to set the callback here even though |
| 259 | * the new socket is unknown. Mark the socket as -1. */ |
| 260 | newconn->callback = conn->callback; |
| 261 | newconn->socket = -1; |
| 262 | } |
| 263 | |
| 264 | sys_mbox_post(mbox, newconn); |
| 265 | return ERR_OK; |
| 266 | } |
| 267 | #endif /* LWIP_TCP */ |
| 268 | |
| 269 | static void |
| 270 | do_newconn(struct api_msg_msg *msg) |
| 271 | { |
| 272 | if(msg->conn->pcb.tcp != NULL) { |
| 273 | /* This "new" connection already has a PCB allocated. */ |
| 274 | /* Is this an error condition? Should it be deleted? |
| 275 | We currently just are happy and return. */ |
| 276 | sys_mbox_post(msg->conn->mbox, NULL); |
| 277 | return; |
| 278 | } |
| 279 | |
| 280 | msg->conn->err = ERR_OK; |
| 281 | |
| 282 | /* Allocate a PCB for this connection */ |
| 283 | switch(msg->conn->type) { |
| 284 | #if LWIP_RAW |
| 285 | case NETCONN_RAW: |
| 286 | msg->conn->pcb.raw = raw_new(msg->msg.bc.port); /* misusing the port field */ |
| 287 | raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn); |
| 288 | break; |
| 289 | #endif |
| 290 | #if LWIP_UDP |
| 291 | case NETCONN_UDPLITE: |
| 292 | msg->conn->pcb.udp = udp_new(); |
| 293 | if(msg->conn->pcb.udp == NULL) { |
| 294 | msg->conn->err = ERR_MEM; |
| 295 | break; |
| 296 | } |
| 297 | udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE); |
| 298 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 299 | break; |
| 300 | case NETCONN_UDPNOCHKSUM: |
| 301 | msg->conn->pcb.udp = udp_new(); |
| 302 | if(msg->conn->pcb.udp == NULL) { |
| 303 | msg->conn->err = ERR_MEM; |
| 304 | break; |
| 305 | } |
| 306 | udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM); |
| 307 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 308 | break; |
| 309 | case NETCONN_UDP: |
| 310 | msg->conn->pcb.udp = udp_new(); |
| 311 | if(msg->conn->pcb.udp == NULL) { |
| 312 | msg->conn->err = ERR_MEM; |
| 313 | break; |
| 314 | } |
| 315 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 316 | break; |
| 317 | #endif /* LWIP_UDP */ |
| 318 | #if LWIP_TCP |
| 319 | case NETCONN_TCP: |
| 320 | msg->conn->pcb.tcp = tcp_new(); |
| 321 | if(msg->conn->pcb.tcp == NULL) { |
| 322 | msg->conn->err = ERR_MEM; |
| 323 | break; |
| 324 | } |
| 325 | setup_tcp(msg->conn); |
| 326 | break; |
| 327 | #endif |
| 328 | } |
| 329 | |
| 330 | |
| 331 | sys_mbox_post(msg->conn->mbox, NULL); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | static void |
| 336 | do_delconn(struct api_msg_msg *msg) |
| 337 | { |
| 338 | if (msg->conn->pcb.tcp != NULL) { |
| 339 | switch (msg->conn->type) { |
| 340 | #if LWIP_RAW |
| 341 | case NETCONN_RAW: |
| 342 | raw_remove(msg->conn->pcb.raw); |
| 343 | break; |
| 344 | #endif |
| 345 | #if LWIP_UDP |
| 346 | case NETCONN_UDPLITE: |
| 347 | /* FALLTHROUGH */ |
| 348 | case NETCONN_UDPNOCHKSUM: |
| 349 | /* FALLTHROUGH */ |
| 350 | case NETCONN_UDP: |
| 351 | msg->conn->pcb.udp->recv_arg = NULL; |
| 352 | udp_remove(msg->conn->pcb.udp); |
| 353 | break; |
| 354 | #endif /* LWIP_UDP */ |
| 355 | #if LWIP_TCP |
| 356 | case NETCONN_TCP: |
| 357 | if (msg->conn->pcb.tcp->state == LISTEN) { |
| 358 | tcp_arg(msg->conn->pcb.tcp, NULL); |
| 359 | tcp_accept(msg->conn->pcb.tcp, NULL); |
| 360 | tcp_close(msg->conn->pcb.tcp); |
| 361 | } else { |
| 362 | tcp_arg(msg->conn->pcb.tcp, NULL); |
| 363 | tcp_sent(msg->conn->pcb.tcp, NULL); |
| 364 | tcp_recv(msg->conn->pcb.tcp, NULL); |
| 365 | tcp_poll(msg->conn->pcb.tcp, NULL, 0); |
| 366 | tcp_err(msg->conn->pcb.tcp, NULL); |
| 367 | if (tcp_close(msg->conn->pcb.tcp) != ERR_OK) { |
| 368 | tcp_abort(msg->conn->pcb.tcp); |
| 369 | } |
| 370 | } |
| 371 | #endif |
| 372 | default: |
| 373 | break; |
| 374 | } |
| 375 | } |
| 376 | /* Trigger select() in socket layer */ |
| 377 | if (msg->conn->callback) |
| 378 | { |
| 379 | (*msg->conn->callback)(msg->conn, NETCONN_EVT_RCVPLUS, 0); |
| 380 | (*msg->conn->callback)(msg->conn, NETCONN_EVT_SENDPLUS, 0); |
| 381 | } |
| 382 | |
| 383 | if (msg->conn->mbox != SYS_MBOX_NULL) { |
| 384 | sys_mbox_post(msg->conn->mbox, NULL); |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | static void |
| 389 | do_bind(struct api_msg_msg *msg) |
| 390 | { |
| 391 | if (msg->conn->pcb.tcp == NULL) { |
| 392 | switch (msg->conn->type) { |
| 393 | #if LWIP_RAW |
| 394 | case NETCONN_RAW: |
| 395 | msg->conn->pcb.raw = raw_new(msg->msg.bc.port); /* misusing the port field as protocol */ |
| 396 | raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn); |
| 397 | break; |
| 398 | #endif |
| 399 | #if LWIP_UDP |
| 400 | case NETCONN_UDPLITE: |
| 401 | msg->conn->pcb.udp = udp_new(); |
| 402 | udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE); |
| 403 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 404 | break; |
| 405 | case NETCONN_UDPNOCHKSUM: |
| 406 | msg->conn->pcb.udp = udp_new(); |
| 407 | udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM); |
| 408 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 409 | break; |
| 410 | case NETCONN_UDP: |
| 411 | msg->conn->pcb.udp = udp_new(); |
| 412 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 413 | break; |
| 414 | #endif /* LWIP_UDP */ |
| 415 | #if LWIP_TCP |
| 416 | case NETCONN_TCP: |
| 417 | msg->conn->pcb.tcp = tcp_new(); |
| 418 | setup_tcp(msg->conn); |
| 419 | #endif /* LWIP_TCP */ |
| 420 | default: |
| 421 | break; |
| 422 | } |
| 423 | } |
| 424 | switch (msg->conn->type) { |
| 425 | #if LWIP_RAW |
| 426 | case NETCONN_RAW: |
| 427 | msg->conn->err = raw_bind(msg->conn->pcb.raw,msg->msg.bc.ipaddr); |
| 428 | break; |
| 429 | #endif |
| 430 | #if LWIP_UDP |
| 431 | case NETCONN_UDPLITE: |
| 432 | /* FALLTHROUGH */ |
| 433 | case NETCONN_UDPNOCHKSUM: |
| 434 | /* FALLTHROUGH */ |
| 435 | case NETCONN_UDP: |
| 436 | msg->conn->err = udp_bind(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port); |
| 437 | break; |
| 438 | #endif /* LWIP_UDP */ |
| 439 | #if LWIP_TCP |
| 440 | case NETCONN_TCP: |
| 441 | msg->conn->err = tcp_bind(msg->conn->pcb.tcp, |
| 442 | msg->msg.bc.ipaddr, msg->msg.bc.port); |
| 443 | #endif /* LWIP_TCP */ |
| 444 | default: |
| 445 | break; |
| 446 | } |
| 447 | sys_mbox_post(msg->conn->mbox, NULL); |
| 448 | } |
| 449 | #if LWIP_TCP |
| 450 | |
| 451 | static err_t |
| 452 | do_connected(void *arg, struct tcp_pcb *pcb, err_t err) |
| 453 | { |
| 454 | struct netconn *conn; |
| 455 | |
| 456 | conn = arg; |
| 457 | |
| 458 | if (conn == NULL) { |
| 459 | return ERR_VAL; |
| 460 | } |
| 461 | |
| 462 | conn->err = err; |
| 463 | if (conn->type == NETCONN_TCP && err == ERR_OK) { |
| 464 | setup_tcp(conn); |
| 465 | } |
| 466 | sys_mbox_post(conn->mbox, NULL); |
| 467 | return ERR_OK; |
| 468 | } |
| 469 | #endif |
| 470 | |
| 471 | static void |
| 472 | do_connect(struct api_msg_msg *msg) |
| 473 | { |
| 474 | if (msg->conn->pcb.tcp == NULL) { |
| 475 | switch (msg->conn->type) { |
| 476 | #if LWIP_RAW |
| 477 | case NETCONN_RAW: |
| 478 | msg->conn->pcb.raw = raw_new(msg->msg.bc.port); /* misusing the port field as protocol */ |
| 479 | raw_recv(msg->conn->pcb.raw, recv_raw, msg->conn); |
| 480 | break; |
| 481 | #endif |
| 482 | #if LWIP_UDP |
| 483 | case NETCONN_UDPLITE: |
| 484 | msg->conn->pcb.udp = udp_new(); |
| 485 | if (msg->conn->pcb.udp == NULL) { |
| 486 | msg->conn->err = ERR_MEM; |
| 487 | sys_mbox_post(msg->conn->mbox, NULL); |
| 488 | return; |
| 489 | } |
| 490 | udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_UDPLITE); |
| 491 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 492 | break; |
| 493 | case NETCONN_UDPNOCHKSUM: |
| 494 | msg->conn->pcb.udp = udp_new(); |
| 495 | if (msg->conn->pcb.udp == NULL) { |
| 496 | msg->conn->err = ERR_MEM; |
| 497 | sys_mbox_post(msg->conn->mbox, NULL); |
| 498 | return; |
| 499 | } |
| 500 | udp_setflags(msg->conn->pcb.udp, UDP_FLAGS_NOCHKSUM); |
| 501 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 502 | break; |
| 503 | case NETCONN_UDP: |
| 504 | msg->conn->pcb.udp = udp_new(); |
| 505 | if (msg->conn->pcb.udp == NULL) { |
| 506 | msg->conn->err = ERR_MEM; |
| 507 | sys_mbox_post(msg->conn->mbox, NULL); |
| 508 | return; |
| 509 | } |
| 510 | udp_recv(msg->conn->pcb.udp, recv_udp, msg->conn); |
| 511 | break; |
| 512 | #endif /* LWIP_UDP */ |
| 513 | #if LWIP_TCP |
| 514 | case NETCONN_TCP: |
| 515 | msg->conn->pcb.tcp = tcp_new(); |
| 516 | if (msg->conn->pcb.tcp == NULL) { |
| 517 | msg->conn->err = ERR_MEM; |
| 518 | sys_mbox_post(msg->conn->mbox, NULL); |
| 519 | return; |
| 520 | } |
| 521 | #endif |
| 522 | default: |
| 523 | break; |
| 524 | } |
| 525 | } |
| 526 | switch (msg->conn->type) { |
| 527 | #if LWIP_RAW |
| 528 | case NETCONN_RAW: |
| 529 | raw_connect(msg->conn->pcb.raw, msg->msg.bc.ipaddr); |
| 530 | sys_mbox_post(msg->conn->mbox, NULL); |
| 531 | break; |
| 532 | #endif |
| 533 | #if LWIP_UDP |
| 534 | case NETCONN_UDPLITE: |
| 535 | /* FALLTHROUGH */ |
| 536 | case NETCONN_UDPNOCHKSUM: |
| 537 | /* FALLTHROUGH */ |
| 538 | case NETCONN_UDP: |
| 539 | udp_connect(msg->conn->pcb.udp, msg->msg.bc.ipaddr, msg->msg.bc.port); |
| 540 | sys_mbox_post(msg->conn->mbox, NULL); |
| 541 | break; |
| 542 | #endif |
| 543 | #if LWIP_TCP |
| 544 | case NETCONN_TCP: |
| 545 | /* tcp_arg(msg->conn->pcb.tcp, msg->conn);*/ |
| 546 | setup_tcp(msg->conn); |
| 547 | tcp_connect(msg->conn->pcb.tcp, msg->msg.bc.ipaddr, msg->msg.bc.port, |
| 548 | do_connected); |
| 549 | /*tcp_output(msg->conn->pcb.tcp);*/ |
| 550 | #endif |
| 551 | |
| 552 | default: |
| 553 | break; |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | static void |
| 558 | do_disconnect(struct api_msg_msg *msg) |
| 559 | { |
| 560 | |
| 561 | switch (msg->conn->type) { |
| 562 | #if LWIP_RAW |
| 563 | case NETCONN_RAW: |
| 564 | /* Do nothing as connecting is only a helper for upper lwip layers */ |
| 565 | break; |
| 566 | #endif |
| 567 | #if LWIP_UDP |
| 568 | case NETCONN_UDPLITE: |
| 569 | /* FALLTHROUGH */ |
| 570 | case NETCONN_UDPNOCHKSUM: |
| 571 | /* FALLTHROUGH */ |
| 572 | case NETCONN_UDP: |
| 573 | udp_disconnect(msg->conn->pcb.udp); |
| 574 | break; |
| 575 | #endif |
| 576 | case NETCONN_TCP: |
| 577 | break; |
| 578 | } |
| 579 | sys_mbox_post(msg->conn->mbox, NULL); |
| 580 | } |
| 581 | |
| 582 | |
| 583 | static void |
| 584 | do_listen(struct api_msg_msg *msg) |
| 585 | { |
| 586 | if (msg->conn->pcb.tcp != NULL) { |
| 587 | switch (msg->conn->type) { |
| 588 | #if LWIP_RAW |
| 589 | case NETCONN_RAW: |
| 590 | LWIP_DEBUGF(API_MSG_DEBUG, ("api_msg: listen RAW: cannot listen for RAW.\n")); |
| 591 | break; |
| 592 | #endif |
| 593 | #if LWIP_UDP |
| 594 | case NETCONN_UDPLITE: |
| 595 | /* FALLTHROUGH */ |
| 596 | case NETCONN_UDPNOCHKSUM: |
| 597 | /* FALLTHROUGH */ |
| 598 | case NETCONN_UDP: |
| 599 | LWIP_DEBUGF(API_MSG_DEBUG, ("api_msg: listen UDP: cannot listen for UDP.\n")); |
| 600 | break; |
| 601 | #endif /* LWIP_UDP */ |
| 602 | #if LWIP_TCP |
| 603 | case NETCONN_TCP: |
| 604 | msg->conn->pcb.tcp = tcp_listen(msg->conn->pcb.tcp); |
| 605 | if (msg->conn->pcb.tcp == NULL) { |
| 606 | msg->conn->err = ERR_MEM; |
| 607 | } else { |
| 608 | if (msg->conn->acceptmbox == SYS_MBOX_NULL) { |
| 609 | msg->conn->acceptmbox = sys_mbox_new(); |
| 610 | if (msg->conn->acceptmbox == SYS_MBOX_NULL) { |
| 611 | msg->conn->err = ERR_MEM; |
| 612 | break; |
| 613 | } |
| 614 | } |
| 615 | tcp_arg(msg->conn->pcb.tcp, msg->conn); |
| 616 | tcp_accept(msg->conn->pcb.tcp, accept_function); |
| 617 | } |
| 618 | #endif |
| 619 | default: |
| 620 | break; |
| 621 | } |
| 622 | } |
| 623 | sys_mbox_post(msg->conn->mbox, NULL); |
| 624 | } |
| 625 | |
| 626 | static void |
| 627 | do_accept(struct api_msg_msg *msg) |
| 628 | { |
| 629 | if (msg->conn->pcb.tcp != NULL) { |
| 630 | switch (msg->conn->type) { |
| 631 | #if LWIP_RAW |
| 632 | case NETCONN_RAW: |
| 633 | LWIP_DEBUGF(API_MSG_DEBUG, ("api_msg: accept RAW: cannot accept for RAW.\n")); |
| 634 | break; |
| 635 | #endif |
| 636 | #if LWIP_UDP |
| 637 | case NETCONN_UDPLITE: |
| 638 | /* FALLTHROUGH */ |
| 639 | case NETCONN_UDPNOCHKSUM: |
| 640 | /* FALLTHROUGH */ |
| 641 | case NETCONN_UDP: |
| 642 | LWIP_DEBUGF(API_MSG_DEBUG, ("api_msg: accept UDP: cannot accept for UDP.\n")); |
| 643 | break; |
| 644 | #endif /* LWIP_UDP */ |
| 645 | case NETCONN_TCP: |
| 646 | break; |
| 647 | } |
| 648 | } |
| 649 | } |
| 650 | |
| 651 | static void |
| 652 | do_send(struct api_msg_msg *msg) |
| 653 | { |
| 654 | if (msg->conn->pcb.tcp != NULL) { |
| 655 | switch (msg->conn->type) { |
| 656 | #if LWIP_RAW |
| 657 | case NETCONN_RAW: |
| 658 | raw_send(msg->conn->pcb.raw, msg->msg.p); |
| 659 | break; |
| 660 | #endif |
| 661 | #if LWIP_UDP |
| 662 | case NETCONN_UDPLITE: |
| 663 | /* FALLTHROUGH */ |
| 664 | case NETCONN_UDPNOCHKSUM: |
| 665 | /* FALLTHROUGH */ |
| 666 | case NETCONN_UDP: |
| 667 | udp_send(msg->conn->pcb.udp, msg->msg.p); |
| 668 | break; |
| 669 | #endif /* LWIP_UDP */ |
| 670 | case NETCONN_TCP: |
| 671 | break; |
| 672 | } |
| 673 | } |
| 674 | sys_mbox_post(msg->conn->mbox, NULL); |
| 675 | } |
| 676 | |
| 677 | static void |
| 678 | do_recv(struct api_msg_msg *msg) |
| 679 | { |
| 680 | #if LWIP_TCP |
| 681 | if (msg->conn->pcb.tcp != NULL) { |
| 682 | if (msg->conn->type == NETCONN_TCP) { |
| 683 | tcp_recved(msg->conn->pcb.tcp, msg->msg.len); |
| 684 | } |
| 685 | } |
| 686 | #endif |
| 687 | sys_mbox_post(msg->conn->mbox, NULL); |
| 688 | } |
| 689 | |
| 690 | static void |
| 691 | do_write(struct api_msg_msg *msg) |
| 692 | { |
| 693 | #if LWIP_TCP |
| 694 | err_t err; |
| 695 | #endif |
| 696 | if (msg->conn->pcb.tcp != NULL) { |
| 697 | switch (msg->conn->type) { |
| 698 | #if LWIP_RAW |
| 699 | case NETCONN_RAW: |
| 700 | msg->conn->err = ERR_VAL; |
| 701 | break; |
| 702 | #endif |
| 703 | #if LWIP_UDP |
| 704 | case NETCONN_UDPLITE: |
| 705 | /* FALLTHROUGH */ |
| 706 | case NETCONN_UDPNOCHKSUM: |
| 707 | /* FALLTHROUGH */ |
| 708 | case NETCONN_UDP: |
| 709 | msg->conn->err = ERR_VAL; |
| 710 | break; |
| 711 | #endif /* LWIP_UDP */ |
| 712 | #if LWIP_TCP |
| 713 | case NETCONN_TCP: |
| 714 | err = tcp_write(msg->conn->pcb.tcp, msg->msg.w.dataptr, |
| 715 | msg->msg.w.len, msg->msg.w.copy); |
| 716 | /* This is the Nagle algorithm: inhibit the sending of new TCP |
| 717 | segments when new outgoing data arrives from the user if any |
| 718 | previously transmitted data on the connection remains |
| 719 | unacknowledged. */ |
| 720 | if(err == ERR_OK && (msg->conn->pcb.tcp->unacked == NULL || (msg->conn->pcb.tcp->flags & TF_NODELAY)) ) { |
| 721 | tcp_output(msg->conn->pcb.tcp); |
| 722 | } |
| 723 | msg->conn->err = err; |
| 724 | if (msg->conn->callback) |
| 725 | if (err == ERR_OK) |
| 726 | { |
| 727 | if (tcp_sndbuf(msg->conn->pcb.tcp) <= TCP_SNDLOWAT) |
| 728 | (*msg->conn->callback)(msg->conn, NETCONN_EVT_SENDMINUS, msg->msg.w.len); |
| 729 | } |
| 730 | #endif |
| 731 | default: |
| 732 | break; |
| 733 | } |
| 734 | } |
| 735 | sys_mbox_post(msg->conn->mbox, NULL); |
| 736 | } |
| 737 | |
| 738 | static void |
| 739 | do_close(struct api_msg_msg *msg) |
| 740 | { |
| 741 | err_t err; |
| 742 | |
| 743 | err = ERR_OK; |
| 744 | |
| 745 | if (msg->conn->pcb.tcp != NULL) { |
| 746 | switch (msg->conn->type) { |
| 747 | #if LWIP_RAW |
| 748 | case NETCONN_RAW: |
| 749 | break; |
| 750 | #endif |
| 751 | #if LWIP_UDP |
| 752 | case NETCONN_UDPLITE: |
| 753 | /* FALLTHROUGH */ |
| 754 | case NETCONN_UDPNOCHKSUM: |
| 755 | /* FALLTHROUGH */ |
| 756 | case NETCONN_UDP: |
| 757 | break; |
| 758 | #endif /* LWIP_UDP */ |
| 759 | #if LWIP_TCP |
| 760 | case NETCONN_TCP: |
| 761 | if (msg->conn->pcb.tcp->state == LISTEN) { |
| 762 | err = tcp_close(msg->conn->pcb.tcp); |
| 763 | } |
| 764 | msg->conn->err = err; |
| 765 | #endif |
| 766 | default: |
| 767 | break; |
| 768 | } |
| 769 | } |
| 770 | sys_mbox_post(msg->conn->mbox, NULL); |
| 771 | } |
| 772 | |
| 773 | typedef void (* api_msg_decode)(struct api_msg_msg *msg); |
| 774 | static api_msg_decode decode[API_MSG_MAX] = { |
| 775 | do_newconn, |
| 776 | do_delconn, |
| 777 | do_bind, |
| 778 | do_connect, |
| 779 | do_disconnect, |
| 780 | do_listen, |
| 781 | do_accept, |
| 782 | do_send, |
| 783 | do_recv, |
| 784 | do_write, |
| 785 | do_close |
| 786 | }; |
| 787 | void |
| 788 | api_msg_input(struct api_msg *msg) |
| 789 | { |
| 790 | decode[msg->type](&(msg->msg)); |
| 791 | } |
| 792 | |
| 793 | void |
| 794 | api_msg_post(struct api_msg *msg) |
| 795 | { |
| 796 | tcpip_apimsg(msg); |
| 797 | } |
| 798 | |
| 799 | |
| 800 | |