root / net / socket.c @ c7eb1f02
History | View | Annotate | Download (17.2 kB)
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" |
29 |
#include "qemu-char.h" |
30 |
#include "qemu-common.h" |
31 |
#include "qemu-error.h" |
32 |
#include "qemu-option.h" |
33 |
#include "qemu_socket.h" |
34 |
|
35 |
typedef struct NetSocketState { |
36 |
VLANClientState nc; |
37 |
int fd;
|
38 |
int state; /* 0 = getting length, 1 = getting data */ |
39 |
unsigned int index; |
40 |
unsigned int packet_len; |
41 |
uint8_t buf[4096];
|
42 |
struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
43 |
} NetSocketState; |
44 |
|
45 |
typedef struct NetSocketListenState { |
46 |
VLANState *vlan; |
47 |
char *model;
|
48 |
char *name;
|
49 |
int fd;
|
50 |
} NetSocketListenState; |
51 |
|
52 |
/* XXX: we consider we can send the whole packet without blocking */
|
53 |
static ssize_t net_socket_receive(VLANClientState *nc, const uint8_t *buf, size_t size) |
54 |
{ |
55 |
NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
56 |
uint32_t len; |
57 |
len = htonl(size); |
58 |
|
59 |
send_all(s->fd, (const uint8_t *)&len, sizeof(len)); |
60 |
return send_all(s->fd, buf, size);
|
61 |
} |
62 |
|
63 |
static ssize_t net_socket_receive_dgram(VLANClientState *nc, const uint8_t *buf, size_t size) |
64 |
{ |
65 |
NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
66 |
|
67 |
return sendto(s->fd, (const void *)buf, size, 0, |
68 |
(struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); |
69 |
} |
70 |
|
71 |
static void net_socket_send(void *opaque) |
72 |
{ |
73 |
NetSocketState *s = opaque; |
74 |
int size, err;
|
75 |
unsigned l;
|
76 |
uint8_t buf1[4096];
|
77 |
const uint8_t *buf;
|
78 |
|
79 |
size = recv(s->fd, (void *)buf1, sizeof(buf1), 0); |
80 |
if (size < 0) { |
81 |
err = socket_error(); |
82 |
if (err != EWOULDBLOCK)
|
83 |
goto eoc;
|
84 |
} else if (size == 0) { |
85 |
/* end of connection */
|
86 |
eoc:
|
87 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
88 |
closesocket(s->fd); |
89 |
return;
|
90 |
} |
91 |
buf = buf1; |
92 |
while (size > 0) { |
93 |
/* reassemble a packet from the network */
|
94 |
switch(s->state) {
|
95 |
case 0: |
96 |
l = 4 - s->index;
|
97 |
if (l > size)
|
98 |
l = size; |
99 |
memcpy(s->buf + s->index, buf, l); |
100 |
buf += l; |
101 |
size -= l; |
102 |
s->index += l; |
103 |
if (s->index == 4) { |
104 |
/* got length */
|
105 |
s->packet_len = ntohl(*(uint32_t *)s->buf); |
106 |
s->index = 0;
|
107 |
s->state = 1;
|
108 |
} |
109 |
break;
|
110 |
case 1: |
111 |
l = s->packet_len - s->index; |
112 |
if (l > size)
|
113 |
l = size; |
114 |
if (s->index + l <= sizeof(s->buf)) { |
115 |
memcpy(s->buf + s->index, buf, l); |
116 |
} else {
|
117 |
fprintf(stderr, "serious error: oversized packet received,"
|
118 |
"connection terminated.\n");
|
119 |
s->state = 0;
|
120 |
goto eoc;
|
121 |
} |
122 |
|
123 |
s->index += l; |
124 |
buf += l; |
125 |
size -= l; |
126 |
if (s->index >= s->packet_len) {
|
127 |
qemu_send_packet(&s->nc, s->buf, s->packet_len); |
128 |
s->index = 0;
|
129 |
s->state = 0;
|
130 |
} |
131 |
break;
|
132 |
} |
133 |
} |
134 |
} |
135 |
|
136 |
static void net_socket_send_dgram(void *opaque) |
137 |
{ |
138 |
NetSocketState *s = opaque; |
139 |
int size;
|
140 |
|
141 |
size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0); |
142 |
if (size < 0) |
143 |
return;
|
144 |
if (size == 0) { |
145 |
/* end of connection */
|
146 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
147 |
return;
|
148 |
} |
149 |
qemu_send_packet(&s->nc, s->buf, size); |
150 |
} |
151 |
|
152 |
static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr *localaddr) |
153 |
{ |
154 |
struct ip_mreq imr;
|
155 |
int fd;
|
156 |
int val, ret;
|
157 |
if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
|
158 |
fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
|
159 |
inet_ntoa(mcastaddr->sin_addr), |
160 |
(int)ntohl(mcastaddr->sin_addr.s_addr));
|
161 |
return -1; |
162 |
|
163 |
} |
164 |
fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
|
165 |
if (fd < 0) { |
166 |
perror("socket(PF_INET, SOCK_DGRAM)");
|
167 |
return -1; |
168 |
} |
169 |
|
170 |
val = 1;
|
171 |
ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, |
172 |
(const char *)&val, sizeof(val)); |
173 |
if (ret < 0) { |
174 |
perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
|
175 |
goto fail;
|
176 |
} |
177 |
|
178 |
ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
179 |
if (ret < 0) { |
180 |
perror("bind");
|
181 |
goto fail;
|
182 |
} |
183 |
|
184 |
/* Add host to multicast group */
|
185 |
imr.imr_multiaddr = mcastaddr->sin_addr; |
186 |
if (localaddr) {
|
187 |
imr.imr_interface = *localaddr; |
188 |
} else {
|
189 |
imr.imr_interface.s_addr = htonl(INADDR_ANY); |
190 |
} |
191 |
|
192 |
ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
193 |
(const char *)&imr, sizeof(struct ip_mreq)); |
194 |
if (ret < 0) { |
195 |
perror("setsockopt(IP_ADD_MEMBERSHIP)");
|
196 |
goto fail;
|
197 |
} |
198 |
|
199 |
/* Force mcast msgs to loopback (eg. several QEMUs in same host */
|
200 |
val = 1;
|
201 |
ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
202 |
(const char *)&val, sizeof(val)); |
203 |
if (ret < 0) { |
204 |
perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
|
205 |
goto fail;
|
206 |
} |
207 |
|
208 |
/* If a bind address is given, only send packets from that address */
|
209 |
if (localaddr != NULL) { |
210 |
ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
211 |
(const char *)localaddr, sizeof(*localaddr)); |
212 |
if (ret < 0) { |
213 |
perror("setsockopt(IP_MULTICAST_IF)");
|
214 |
goto fail;
|
215 |
} |
216 |
} |
217 |
|
218 |
socket_set_nonblock(fd); |
219 |
return fd;
|
220 |
fail:
|
221 |
if (fd >= 0) |
222 |
closesocket(fd); |
223 |
return -1; |
224 |
} |
225 |
|
226 |
static void net_socket_cleanup(VLANClientState *nc) |
227 |
{ |
228 |
NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
229 |
qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
230 |
close(s->fd); |
231 |
} |
232 |
|
233 |
static NetClientInfo net_dgram_socket_info = {
|
234 |
.type = NET_CLIENT_TYPE_SOCKET, |
235 |
.size = sizeof(NetSocketState),
|
236 |
.receive = net_socket_receive_dgram, |
237 |
.cleanup = net_socket_cleanup, |
238 |
}; |
239 |
|
240 |
static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
|
241 |
const char *model, |
242 |
const char *name, |
243 |
int fd, int is_connected) |
244 |
{ |
245 |
struct sockaddr_in saddr;
|
246 |
int newfd;
|
247 |
socklen_t saddr_len; |
248 |
VLANClientState *nc; |
249 |
NetSocketState *s; |
250 |
|
251 |
/* fd passed: multicast: "learn" dgram_dst address from bound address and save it
|
252 |
* Because this may be "shared" socket from a "master" process, datagrams would be recv()
|
253 |
* by ONLY ONE process: we must "clone" this dgram socket --jjo
|
254 |
*/
|
255 |
|
256 |
if (is_connected) {
|
257 |
if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { |
258 |
/* must be bound */
|
259 |
if (saddr.sin_addr.s_addr==0) { |
260 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
|
261 |
fd); |
262 |
return NULL; |
263 |
} |
264 |
/* clone dgram socket */
|
265 |
newfd = net_socket_mcast_create(&saddr, NULL);
|
266 |
if (newfd < 0) { |
267 |
/* error already reported by net_socket_mcast_create() */
|
268 |
close(fd); |
269 |
return NULL; |
270 |
} |
271 |
/* clone newfd to fd, close newfd */
|
272 |
dup2(newfd, fd); |
273 |
close(newfd); |
274 |
|
275 |
} else {
|
276 |
fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
|
277 |
fd, strerror(errno)); |
278 |
return NULL; |
279 |
} |
280 |
} |
281 |
|
282 |
nc = qemu_new_net_client(&net_dgram_socket_info, vlan, NULL, model, name);
|
283 |
|
284 |
snprintf(nc->info_str, sizeof(nc->info_str),
|
285 |
"socket: fd=%d (%s mcast=%s:%d)",
|
286 |
fd, is_connected ? "cloned" : "", |
287 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
288 |
|
289 |
s = DO_UPCAST(NetSocketState, nc, nc); |
290 |
|
291 |
s->fd = fd; |
292 |
|
293 |
qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
|
294 |
|
295 |
/* mcast: save bound address as dst */
|
296 |
if (is_connected) s->dgram_dst=saddr;
|
297 |
|
298 |
return s;
|
299 |
} |
300 |
|
301 |
static void net_socket_connect(void *opaque) |
302 |
{ |
303 |
NetSocketState *s = opaque; |
304 |
qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
|
305 |
} |
306 |
|
307 |
static NetClientInfo net_socket_info = {
|
308 |
.type = NET_CLIENT_TYPE_SOCKET, |
309 |
.size = sizeof(NetSocketState),
|
310 |
.receive = net_socket_receive, |
311 |
.cleanup = net_socket_cleanup, |
312 |
}; |
313 |
|
314 |
static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
|
315 |
const char *model, |
316 |
const char *name, |
317 |
int fd, int is_connected) |
318 |
{ |
319 |
VLANClientState *nc; |
320 |
NetSocketState *s; |
321 |
|
322 |
nc = qemu_new_net_client(&net_socket_info, vlan, NULL, model, name);
|
323 |
|
324 |
snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd); |
325 |
|
326 |
s = DO_UPCAST(NetSocketState, nc, nc); |
327 |
|
328 |
s->fd = fd; |
329 |
|
330 |
if (is_connected) {
|
331 |
net_socket_connect(s); |
332 |
} else {
|
333 |
qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
|
334 |
} |
335 |
return s;
|
336 |
} |
337 |
|
338 |
static NetSocketState *net_socket_fd_init(VLANState *vlan,
|
339 |
const char *model, const char *name, |
340 |
int fd, int is_connected) |
341 |
{ |
342 |
int so_type = -1, optlen=sizeof(so_type); |
343 |
|
344 |
if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
345 |
(socklen_t *)&optlen)< 0) {
|
346 |
fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
|
347 |
return NULL; |
348 |
} |
349 |
switch(so_type) {
|
350 |
case SOCK_DGRAM:
|
351 |
return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
|
352 |
case SOCK_STREAM:
|
353 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
354 |
default:
|
355 |
/* who knows ... this could be a eg. a pty, do warn and continue as stream */
|
356 |
fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
|
357 |
return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
|
358 |
} |
359 |
return NULL; |
360 |
} |
361 |
|
362 |
static void net_socket_accept(void *opaque) |
363 |
{ |
364 |
NetSocketListenState *s = opaque; |
365 |
NetSocketState *s1; |
366 |
struct sockaddr_in saddr;
|
367 |
socklen_t len; |
368 |
int fd;
|
369 |
|
370 |
for(;;) {
|
371 |
len = sizeof(saddr);
|
372 |
fd = qemu_accept(s->fd, (struct sockaddr *)&saddr, &len);
|
373 |
if (fd < 0 && errno != EINTR) { |
374 |
return;
|
375 |
} else if (fd >= 0) { |
376 |
break;
|
377 |
} |
378 |
} |
379 |
s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
|
380 |
if (!s1) {
|
381 |
closesocket(fd); |
382 |
} else {
|
383 |
snprintf(s1->nc.info_str, sizeof(s1->nc.info_str),
|
384 |
"socket: connection from %s:%d",
|
385 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
386 |
} |
387 |
} |
388 |
|
389 |
static int net_socket_listen_init(VLANState *vlan, |
390 |
const char *model, |
391 |
const char *name, |
392 |
const char *host_str) |
393 |
{ |
394 |
NetSocketListenState *s; |
395 |
int fd, val, ret;
|
396 |
struct sockaddr_in saddr;
|
397 |
|
398 |
if (parse_host_port(&saddr, host_str) < 0) |
399 |
return -1; |
400 |
|
401 |
s = qemu_mallocz(sizeof(NetSocketListenState));
|
402 |
|
403 |
fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
|
404 |
if (fd < 0) { |
405 |
perror("socket");
|
406 |
return -1; |
407 |
} |
408 |
socket_set_nonblock(fd); |
409 |
|
410 |
/* allow fast reuse */
|
411 |
val = 1;
|
412 |
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); |
413 |
|
414 |
ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
415 |
if (ret < 0) { |
416 |
perror("bind");
|
417 |
return -1; |
418 |
} |
419 |
ret = listen(fd, 0);
|
420 |
if (ret < 0) { |
421 |
perror("listen");
|
422 |
return -1; |
423 |
} |
424 |
s->vlan = vlan; |
425 |
s->model = qemu_strdup(model); |
426 |
s->name = name ? qemu_strdup(name) : NULL;
|
427 |
s->fd = fd; |
428 |
qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
|
429 |
return 0; |
430 |
} |
431 |
|
432 |
static int net_socket_connect_init(VLANState *vlan, |
433 |
const char *model, |
434 |
const char *name, |
435 |
const char *host_str) |
436 |
{ |
437 |
NetSocketState *s; |
438 |
int fd, connected, ret, err;
|
439 |
struct sockaddr_in saddr;
|
440 |
|
441 |
if (parse_host_port(&saddr, host_str) < 0) |
442 |
return -1; |
443 |
|
444 |
fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
|
445 |
if (fd < 0) { |
446 |
perror("socket");
|
447 |
return -1; |
448 |
} |
449 |
socket_set_nonblock(fd); |
450 |
|
451 |
connected = 0;
|
452 |
for(;;) {
|
453 |
ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
454 |
if (ret < 0) { |
455 |
err = socket_error(); |
456 |
if (err == EINTR || err == EWOULDBLOCK) {
|
457 |
} else if (err == EINPROGRESS) { |
458 |
break;
|
459 |
#ifdef _WIN32
|
460 |
} else if (err == WSAEALREADY || err == WSAEINVAL) { |
461 |
break;
|
462 |
#endif
|
463 |
} else {
|
464 |
perror("connect");
|
465 |
closesocket(fd); |
466 |
return -1; |
467 |
} |
468 |
} else {
|
469 |
connected = 1;
|
470 |
break;
|
471 |
} |
472 |
} |
473 |
s = net_socket_fd_init(vlan, model, name, fd, connected); |
474 |
if (!s)
|
475 |
return -1; |
476 |
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
|
477 |
"socket: connect to %s:%d",
|
478 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
479 |
return 0; |
480 |
} |
481 |
|
482 |
static int net_socket_mcast_init(VLANState *vlan, |
483 |
const char *model, |
484 |
const char *name, |
485 |
const char *host_str, |
486 |
const char *localaddr_str) |
487 |
{ |
488 |
NetSocketState *s; |
489 |
int fd;
|
490 |
struct sockaddr_in saddr;
|
491 |
struct in_addr localaddr, *param_localaddr;
|
492 |
|
493 |
if (parse_host_port(&saddr, host_str) < 0) |
494 |
return -1; |
495 |
|
496 |
if (localaddr_str != NULL) { |
497 |
if (inet_aton(localaddr_str, &localaddr) == 0) |
498 |
return -1; |
499 |
param_localaddr = &localaddr; |
500 |
} else {
|
501 |
param_localaddr = NULL;
|
502 |
} |
503 |
|
504 |
fd = net_socket_mcast_create(&saddr, param_localaddr); |
505 |
if (fd < 0) |
506 |
return -1; |
507 |
|
508 |
s = net_socket_fd_init(vlan, model, name, fd, 0);
|
509 |
if (!s)
|
510 |
return -1; |
511 |
|
512 |
s->dgram_dst = saddr; |
513 |
|
514 |
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
|
515 |
"socket: mcast=%s:%d",
|
516 |
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
517 |
return 0; |
518 |
|
519 |
} |
520 |
|
521 |
int net_init_socket(QemuOpts *opts,
|
522 |
Monitor *mon, |
523 |
const char *name, |
524 |
VLANState *vlan) |
525 |
{ |
526 |
if (qemu_opt_get(opts, "fd")) { |
527 |
int fd;
|
528 |
|
529 |
if (qemu_opt_get(opts, "listen") || |
530 |
qemu_opt_get(opts, "connect") ||
|
531 |
qemu_opt_get(opts, "mcast") ||
|
532 |
qemu_opt_get(opts, "localaddr")) {
|
533 |
error_report("listen=, connect=, mcast= and localaddr= is invalid with fd=\n");
|
534 |
return -1; |
535 |
} |
536 |
|
537 |
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
|
538 |
if (fd == -1) { |
539 |
return -1; |
540 |
} |
541 |
|
542 |
if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) { |
543 |
close(fd); |
544 |
return -1; |
545 |
} |
546 |
} else if (qemu_opt_get(opts, "listen")) { |
547 |
const char *listen; |
548 |
|
549 |
if (qemu_opt_get(opts, "fd") || |
550 |
qemu_opt_get(opts, "connect") ||
|
551 |
qemu_opt_get(opts, "mcast") ||
|
552 |
qemu_opt_get(opts, "localaddr")) {
|
553 |
error_report("fd=, connect=, mcast= and localaddr= is invalid with listen=\n");
|
554 |
return -1; |
555 |
} |
556 |
|
557 |
listen = qemu_opt_get(opts, "listen");
|
558 |
|
559 |
if (net_socket_listen_init(vlan, "socket", name, listen) == -1) { |
560 |
return -1; |
561 |
} |
562 |
} else if (qemu_opt_get(opts, "connect")) { |
563 |
const char *connect; |
564 |
|
565 |
if (qemu_opt_get(opts, "fd") || |
566 |
qemu_opt_get(opts, "listen") ||
|
567 |
qemu_opt_get(opts, "mcast") ||
|
568 |
qemu_opt_get(opts, "localaddr")) {
|
569 |
error_report("fd=, listen=, mcast= and localaddr= is invalid with connect=\n");
|
570 |
return -1; |
571 |
} |
572 |
|
573 |
connect = qemu_opt_get(opts, "connect");
|
574 |
|
575 |
if (net_socket_connect_init(vlan, "socket", name, connect) == -1) { |
576 |
return -1; |
577 |
} |
578 |
} else if (qemu_opt_get(opts, "mcast")) { |
579 |
const char *mcast, *localaddr; |
580 |
|
581 |
if (qemu_opt_get(opts, "fd") || |
582 |
qemu_opt_get(opts, "connect") ||
|
583 |
qemu_opt_get(opts, "listen")) {
|
584 |
error_report("fd=, connect= and listen= is invalid with mcast=");
|
585 |
return -1; |
586 |
} |
587 |
|
588 |
mcast = qemu_opt_get(opts, "mcast");
|
589 |
localaddr = qemu_opt_get(opts, "localaddr");
|
590 |
|
591 |
if (net_socket_mcast_init(vlan, "socket", name, mcast, localaddr) == -1) { |
592 |
return -1; |
593 |
} |
594 |
} else {
|
595 |
error_report("-socket requires fd=, listen=, connect= or mcast=");
|
596 |
return -1; |
597 |
} |
598 |
|
599 |
return 0; |
600 |
} |