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CommitLineData
42281ac9
MM
1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "net/socket.h"
25
26#include "config-host.h"
27
28#include "net.h"
42dcc547 29#include "monitor.h"
42281ac9
MM
30#include "qemu-char.h"
31#include "qemu-common.h"
2f792016 32#include "qemu-error.h"
42281ac9
MM
33#include "qemu-option.h"
34#include "qemu_socket.h"
42281ac9
MM
35
36typedef struct NetSocketState {
564f63e3 37 VLANClientState nc;
42281ac9
MM
38 int fd;
39 int state; /* 0 = getting length, 1 = getting data */
40 unsigned int index;
41 unsigned int packet_len;
42 uint8_t buf[4096];
43 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
44} NetSocketState;
45
46typedef struct NetSocketListenState {
47 VLANState *vlan;
48 char *model;
49 char *name;
50 int fd;
51} NetSocketListenState;
52
53/* XXX: we consider we can send the whole packet without blocking */
564f63e3 54static ssize_t net_socket_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
42281ac9 55{
564f63e3 56 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
42281ac9
MM
57 uint32_t len;
58 len = htonl(size);
59
60 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
61 return send_all(s->fd, buf, size);
62}
63
564f63e3 64static ssize_t net_socket_receive_dgram(VLANClientState *nc, const uint8_t *buf, size_t size)
42281ac9 65{
564f63e3 66 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
42281ac9
MM
67
68 return sendto(s->fd, (const void *)buf, size, 0,
69 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
70}
71
72static void net_socket_send(void *opaque)
73{
74 NetSocketState *s = opaque;
75 int size, err;
76 unsigned l;
77 uint8_t buf1[4096];
78 const uint8_t *buf;
79
00aa0040 80 size = qemu_recv(s->fd, buf1, sizeof(buf1), 0);
42281ac9
MM
81 if (size < 0) {
82 err = socket_error();
83 if (err != EWOULDBLOCK)
84 goto eoc;
85 } else if (size == 0) {
86 /* end of connection */
87 eoc:
88 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
89 closesocket(s->fd);
90 return;
91 }
92 buf = buf1;
93 while (size > 0) {
94 /* reassemble a packet from the network */
95 switch(s->state) {
96 case 0:
97 l = 4 - s->index;
98 if (l > size)
99 l = size;
100 memcpy(s->buf + s->index, buf, l);
101 buf += l;
102 size -= l;
103 s->index += l;
104 if (s->index == 4) {
105 /* got length */
106 s->packet_len = ntohl(*(uint32_t *)s->buf);
107 s->index = 0;
108 s->state = 1;
109 }
110 break;
111 case 1:
112 l = s->packet_len - s->index;
113 if (l > size)
114 l = size;
115 if (s->index + l <= sizeof(s->buf)) {
116 memcpy(s->buf + s->index, buf, l);
117 } else {
118 fprintf(stderr, "serious error: oversized packet received,"
119 "connection terminated.\n");
120 s->state = 0;
121 goto eoc;
122 }
123
124 s->index += l;
125 buf += l;
126 size -= l;
127 if (s->index >= s->packet_len) {
564f63e3 128 qemu_send_packet(&s->nc, s->buf, s->packet_len);
42281ac9
MM
129 s->index = 0;
130 s->state = 0;
131 }
132 break;
133 }
134 }
135}
136
137static void net_socket_send_dgram(void *opaque)
138{
139 NetSocketState *s = opaque;
140 int size;
141
00aa0040 142 size = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0);
42281ac9
MM
143 if (size < 0)
144 return;
145 if (size == 0) {
146 /* end of connection */
147 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
148 return;
149 }
564f63e3 150 qemu_send_packet(&s->nc, s->buf, size);
42281ac9
MM
151}
152
3a75e74c 153static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr *localaddr)
42281ac9
MM
154{
155 struct ip_mreq imr;
156 int fd;
157 int val, ret;
23ddf2bb
BS
158#ifdef __OpenBSD__
159 unsigned char loop;
160#else
161 int loop;
162#endif
163
42281ac9 164 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
842480d4
SH
165 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) "
166 "does not contain a multicast address\n",
167 inet_ntoa(mcastaddr->sin_addr),
42281ac9 168 (int)ntohl(mcastaddr->sin_addr.s_addr));
842480d4 169 return -1;
42281ac9
MM
170
171 }
40ff6d7e 172 fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
42281ac9
MM
173 if (fd < 0) {
174 perror("socket(PF_INET, SOCK_DGRAM)");
175 return -1;
176 }
177
178 val = 1;
179 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
180 (const char *)&val, sizeof(val));
181 if (ret < 0) {
842480d4
SH
182 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
183 goto fail;
42281ac9
MM
184 }
185
186 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
187 if (ret < 0) {
188 perror("bind");
189 goto fail;
190 }
191
192 /* Add host to multicast group */
193 imr.imr_multiaddr = mcastaddr->sin_addr;
3a75e74c
MR
194 if (localaddr) {
195 imr.imr_interface = *localaddr;
196 } else {
197 imr.imr_interface.s_addr = htonl(INADDR_ANY);
198 }
42281ac9
MM
199
200 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
201 (const char *)&imr, sizeof(struct ip_mreq));
202 if (ret < 0) {
842480d4
SH
203 perror("setsockopt(IP_ADD_MEMBERSHIP)");
204 goto fail;
42281ac9
MM
205 }
206
207 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
23ddf2bb 208 loop = 1;
42281ac9 209 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
23ddf2bb 210 (const char *)&loop, sizeof(loop));
42281ac9 211 if (ret < 0) {
842480d4
SH
212 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
213 goto fail;
42281ac9
MM
214 }
215
3a75e74c
MR
216 /* If a bind address is given, only send packets from that address */
217 if (localaddr != NULL) {
4d22c6c2
BS
218 ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
219 (const char *)localaddr, sizeof(*localaddr));
3a75e74c
MR
220 if (ret < 0) {
221 perror("setsockopt(IP_MULTICAST_IF)");
222 goto fail;
223 }
224 }
225
42281ac9
MM
226 socket_set_nonblock(fd);
227 return fd;
228fail:
229 if (fd >= 0)
230 closesocket(fd);
231 return -1;
232}
233
564f63e3 234static void net_socket_cleanup(VLANClientState *nc)
42281ac9 235{
564f63e3 236 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
42281ac9
MM
237 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
238 close(s->fd);
42281ac9
MM
239}
240
564f63e3
MM
241static NetClientInfo net_dgram_socket_info = {
242 .type = NET_CLIENT_TYPE_SOCKET,
243 .size = sizeof(NetSocketState),
244 .receive = net_socket_receive_dgram,
245 .cleanup = net_socket_cleanup,
246};
247
42281ac9
MM
248static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
249 const char *model,
250 const char *name,
251 int fd, int is_connected)
252{
253 struct sockaddr_in saddr;
254 int newfd;
255 socklen_t saddr_len;
564f63e3 256 VLANClientState *nc;
42281ac9
MM
257 NetSocketState *s;
258
259 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
260 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
261 * by ONLY ONE process: we must "clone" this dgram socket --jjo
262 */
263
264 if (is_connected) {
842480d4
SH
265 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
266 /* must be bound */
267 if (saddr.sin_addr.s_addr == 0) {
268 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, "
269 "cannot setup multicast dst addr\n", fd);
e5d1fca0 270 goto err;
842480d4
SH
271 }
272 /* clone dgram socket */
273 newfd = net_socket_mcast_create(&saddr, NULL);
274 if (newfd < 0) {
275 /* error already reported by net_socket_mcast_create() */
e5d1fca0 276 goto err;
842480d4
SH
277 }
278 /* clone newfd to fd, close newfd */
279 dup2(newfd, fd);
280 close(newfd);
281
282 } else {
283 fprintf(stderr,
284 "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
285 fd, strerror(errno));
e5d1fca0 286 goto err;
842480d4 287 }
42281ac9
MM
288 }
289
564f63e3
MM
290 nc = qemu_new_net_client(&net_dgram_socket_info, vlan, NULL, model, name);
291
292 snprintf(nc->info_str, sizeof(nc->info_str),
842480d4
SH
293 "socket: fd=%d (%s mcast=%s:%d)",
294 fd, is_connected ? "cloned" : "",
295 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
564f63e3
MM
296
297 s = DO_UPCAST(NetSocketState, nc, nc);
298
42281ac9
MM
299 s->fd = fd;
300
42281ac9
MM
301 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
302
303 /* mcast: save bound address as dst */
304 if (is_connected) s->dgram_dst=saddr;
305
42281ac9 306 return s;
e5d1fca0
SH
307
308err:
309 closesocket(fd);
310 return NULL;
42281ac9
MM
311}
312
313static void net_socket_connect(void *opaque)
314{
315 NetSocketState *s = opaque;
316 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
317}
318
564f63e3
MM
319static NetClientInfo net_socket_info = {
320 .type = NET_CLIENT_TYPE_SOCKET,
321 .size = sizeof(NetSocketState),
322 .receive = net_socket_receive,
323 .cleanup = net_socket_cleanup,
324};
325
42281ac9
MM
326static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
327 const char *model,
328 const char *name,
329 int fd, int is_connected)
330{
564f63e3 331 VLANClientState *nc;
42281ac9 332 NetSocketState *s;
564f63e3
MM
333
334 nc = qemu_new_net_client(&net_socket_info, vlan, NULL, model, name);
335
336 snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd);
337
338 s = DO_UPCAST(NetSocketState, nc, nc);
339
42281ac9 340 s->fd = fd;
564f63e3 341
42281ac9
MM
342 if (is_connected) {
343 net_socket_connect(s);
344 } else {
345 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
346 }
347 return s;
348}
349
350static NetSocketState *net_socket_fd_init(VLANState *vlan,
351 const char *model, const char *name,
352 int fd, int is_connected)
353{
354 int so_type = -1, optlen=sizeof(so_type);
355
356 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
357 (socklen_t *)&optlen)< 0) {
842480d4
SH
358 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n",
359 fd);
e5d1fca0 360 closesocket(fd);
842480d4 361 return NULL;
42281ac9
MM
362 }
363 switch(so_type) {
364 case SOCK_DGRAM:
365 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
366 case SOCK_STREAM:
367 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
368 default:
369 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
370 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
371 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
372 }
373 return NULL;
374}
375
376static void net_socket_accept(void *opaque)
377{
378 NetSocketListenState *s = opaque;
379 NetSocketState *s1;
380 struct sockaddr_in saddr;
381 socklen_t len;
382 int fd;
383
384 for(;;) {
385 len = sizeof(saddr);
40ff6d7e 386 fd = qemu_accept(s->fd, (struct sockaddr *)&saddr, &len);
42281ac9
MM
387 if (fd < 0 && errno != EINTR) {
388 return;
389 } else if (fd >= 0) {
390 break;
391 }
392 }
393 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
e5d1fca0 394 if (s1) {
564f63e3 395 snprintf(s1->nc.info_str, sizeof(s1->nc.info_str),
42281ac9
MM
396 "socket: connection from %s:%d",
397 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
398 }
399}
400
401static int net_socket_listen_init(VLANState *vlan,
402 const char *model,
403 const char *name,
404 const char *host_str)
405{
406 NetSocketListenState *s;
407 int fd, val, ret;
408 struct sockaddr_in saddr;
409
410 if (parse_host_port(&saddr, host_str) < 0)
411 return -1;
412
7267c094 413 s = g_malloc0(sizeof(NetSocketListenState));
42281ac9 414
40ff6d7e 415 fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
42281ac9
MM
416 if (fd < 0) {
417 perror("socket");
c7ee8f68 418 g_free(s);
42281ac9
MM
419 return -1;
420 }
421 socket_set_nonblock(fd);
422
423 /* allow fast reuse */
424 val = 1;
425 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
426
427 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
428 if (ret < 0) {
429 perror("bind");
c7ee8f68 430 g_free(s);
a46667ea 431 closesocket(fd);
42281ac9
MM
432 return -1;
433 }
434 ret = listen(fd, 0);
435 if (ret < 0) {
436 perror("listen");
c7ee8f68 437 g_free(s);
a46667ea 438 closesocket(fd);
42281ac9
MM
439 return -1;
440 }
441 s->vlan = vlan;
7267c094
AL
442 s->model = g_strdup(model);
443 s->name = name ? g_strdup(name) : NULL;
42281ac9
MM
444 s->fd = fd;
445 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
446 return 0;
447}
448
449static int net_socket_connect_init(VLANState *vlan,
450 const char *model,
451 const char *name,
452 const char *host_str)
453{
454 NetSocketState *s;
455 int fd, connected, ret, err;
456 struct sockaddr_in saddr;
457
458 if (parse_host_port(&saddr, host_str) < 0)
459 return -1;
460
40ff6d7e 461 fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
42281ac9
MM
462 if (fd < 0) {
463 perror("socket");
464 return -1;
465 }
466 socket_set_nonblock(fd);
467
468 connected = 0;
469 for(;;) {
470 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
471 if (ret < 0) {
472 err = socket_error();
473 if (err == EINTR || err == EWOULDBLOCK) {
474 } else if (err == EINPROGRESS) {
475 break;
476#ifdef _WIN32
c7eb1f02 477 } else if (err == WSAEALREADY || err == WSAEINVAL) {
42281ac9
MM
478 break;
479#endif
480 } else {
481 perror("connect");
482 closesocket(fd);
483 return -1;
484 }
485 } else {
486 connected = 1;
487 break;
488 }
489 }
490 s = net_socket_fd_init(vlan, model, name, fd, connected);
491 if (!s)
492 return -1;
564f63e3 493 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
42281ac9
MM
494 "socket: connect to %s:%d",
495 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
496 return 0;
497}
498
499static int net_socket_mcast_init(VLANState *vlan,
500 const char *model,
501 const char *name,
3a75e74c
MR
502 const char *host_str,
503 const char *localaddr_str)
42281ac9
MM
504{
505 NetSocketState *s;
506 int fd;
507 struct sockaddr_in saddr;
3a75e74c 508 struct in_addr localaddr, *param_localaddr;
42281ac9
MM
509
510 if (parse_host_port(&saddr, host_str) < 0)
511 return -1;
512
3a75e74c
MR
513 if (localaddr_str != NULL) {
514 if (inet_aton(localaddr_str, &localaddr) == 0)
515 return -1;
516 param_localaddr = &localaddr;
517 } else {
518 param_localaddr = NULL;
519 }
42281ac9 520
3a75e74c 521 fd = net_socket_mcast_create(&saddr, param_localaddr);
42281ac9 522 if (fd < 0)
842480d4 523 return -1;
42281ac9
MM
524
525 s = net_socket_fd_init(vlan, model, name, fd, 0);
526 if (!s)
527 return -1;
528
529 s->dgram_dst = saddr;
530
564f63e3 531 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
42281ac9
MM
532 "socket: mcast=%s:%d",
533 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
534 return 0;
535
536}
537
0e0e7fac
BM
538static int net_socket_udp_init(VLANState *vlan,
539 const char *model,
540 const char *name,
541 const char *rhost,
542 const char *lhost)
543{
544 NetSocketState *s;
545 int fd, val, ret;
546 struct sockaddr_in laddr, raddr;
547
548 if (parse_host_port(&laddr, lhost) < 0) {
549 return -1;
550 }
551
552 if (parse_host_port(&raddr, rhost) < 0) {
553 return -1;
554 }
555
556 fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
557 if (fd < 0) {
558 perror("socket(PF_INET, SOCK_DGRAM)");
559 return -1;
560 }
561 val = 1;
562 ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
563 (const char *)&val, sizeof(val));
564 if (ret < 0) {
565 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
566 closesocket(fd);
567 return -1;
568 }
569 ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr));
570 if (ret < 0) {
571 perror("bind");
572 closesocket(fd);
573 return -1;
574 }
575
576 s = net_socket_fd_init(vlan, model, name, fd, 0);
577 if (!s) {
578 return -1;
579 }
580
581 s->dgram_dst = raddr;
582
583 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
584 "socket: udp=%s:%d",
585 inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port));
586 return 0;
587}
588
42dcc547 589int net_init_socket(QemuOpts *opts, const char *name, VLANState *vlan)
42281ac9
MM
590{
591 if (qemu_opt_get(opts, "fd")) {
592 int fd;
593
594 if (qemu_opt_get(opts, "listen") ||
595 qemu_opt_get(opts, "connect") ||
3a75e74c
MR
596 qemu_opt_get(opts, "mcast") ||
597 qemu_opt_get(opts, "localaddr")) {
6daf194d 598 error_report("listen=, connect=, mcast= and localaddr= is invalid with fd=");
42281ac9
MM
599 return -1;
600 }
601
42dcc547 602 fd = net_handle_fd_param(cur_mon, qemu_opt_get(opts, "fd"));
42281ac9
MM
603 if (fd == -1) {
604 return -1;
605 }
606
607 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
42281ac9
MM
608 return -1;
609 }
610 } else if (qemu_opt_get(opts, "listen")) {
611 const char *listen;
612
613 if (qemu_opt_get(opts, "fd") ||
614 qemu_opt_get(opts, "connect") ||
3a75e74c
MR
615 qemu_opt_get(opts, "mcast") ||
616 qemu_opt_get(opts, "localaddr")) {
6daf194d 617 error_report("fd=, connect=, mcast= and localaddr= is invalid with listen=");
42281ac9
MM
618 return -1;
619 }
620
621 listen = qemu_opt_get(opts, "listen");
622
623 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
624 return -1;
625 }
626 } else if (qemu_opt_get(opts, "connect")) {
627 const char *connect;
628
629 if (qemu_opt_get(opts, "fd") ||
630 qemu_opt_get(opts, "listen") ||
3a75e74c
MR
631 qemu_opt_get(opts, "mcast") ||
632 qemu_opt_get(opts, "localaddr")) {
6daf194d 633 error_report("fd=, listen=, mcast= and localaddr= is invalid with connect=");
42281ac9
MM
634 return -1;
635 }
636
637 connect = qemu_opt_get(opts, "connect");
638
639 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
640 return -1;
641 }
642 } else if (qemu_opt_get(opts, "mcast")) {
3a75e74c 643 const char *mcast, *localaddr;
42281ac9
MM
644
645 if (qemu_opt_get(opts, "fd") ||
646 qemu_opt_get(opts, "connect") ||
647 qemu_opt_get(opts, "listen")) {
1ecda02b 648 error_report("fd=, connect= and listen= is invalid with mcast=");
42281ac9
MM
649 return -1;
650 }
651
652 mcast = qemu_opt_get(opts, "mcast");
3a75e74c 653 localaddr = qemu_opt_get(opts, "localaddr");
42281ac9 654
3a75e74c 655 if (net_socket_mcast_init(vlan, "socket", name, mcast, localaddr) == -1) {
42281ac9
MM
656 return -1;
657 }
0e0e7fac
BM
658 } else if (qemu_opt_get(opts, "udp")) {
659 const char *udp, *localaddr;
660
661 if (qemu_opt_get(opts, "fd") ||
662 qemu_opt_get(opts, "connect") ||
663 qemu_opt_get(opts, "listen") ||
664 qemu_opt_get(opts, "mcast")) {
da8d6057
BM
665 error_report("fd=, connect=, listen="
666 " and mcast= is invalid with udp=");
0e0e7fac
BM
667 return -1;
668 }
669
670 udp = qemu_opt_get(opts, "udp");
671 localaddr = qemu_opt_get(opts, "localaddr");
672 if (localaddr == NULL) {
673 error_report("localaddr= is mandatory with udp=");
674 return -1;
675 }
676
677 if (net_socket_udp_init(vlan, "udp", name, udp, localaddr) == -1) {
678 return -1;
679 }
42281ac9 680 } else {
da8d6057
BM
681 error_report("-socket requires fd=, listen=,"
682 " connect=, mcast= or udp=");
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MM
683 return -1;
684 }
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MM
685 return 0;
686}