vfio/pci: Add a separate option for IGD OpRegion support
[qemu.git] / net / socket.c
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 "qemu/osdep.h"
25
26 #include "net/net.h"
27 #include "clients.h"
28 #include "monitor/monitor.h"
29 #include "qapi/error.h"
30 #include "qemu-common.h"
31 #include "qemu/error-report.h"
32 #include "qemu/option.h"
33 #include "qemu/sockets.h"
34 #include "qemu/iov.h"
35 #include "qemu/main-loop.h"
36
37 typedef struct NetSocketState {
38 NetClientState nc;
39 int listen_fd;
40 int fd;
41 int state; /* 0 = getting length, 1 = getting data */
42 unsigned int index;
43 unsigned int packet_len;
44 unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */
45 uint8_t buf[NET_BUFSIZE];
46 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
47 IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */
48 bool read_poll; /* waiting to receive data? */
49 bool write_poll; /* waiting to transmit data? */
50 } NetSocketState;
51
52 static void net_socket_accept(void *opaque);
53 static void net_socket_writable(void *opaque);
54
55 static void net_socket_update_fd_handler(NetSocketState *s)
56 {
57 qemu_set_fd_handler(s->fd,
58 s->read_poll ? s->send_fn : NULL,
59 s->write_poll ? net_socket_writable : NULL,
60 s);
61 }
62
63 static void net_socket_read_poll(NetSocketState *s, bool enable)
64 {
65 s->read_poll = enable;
66 net_socket_update_fd_handler(s);
67 }
68
69 static void net_socket_write_poll(NetSocketState *s, bool enable)
70 {
71 s->write_poll = enable;
72 net_socket_update_fd_handler(s);
73 }
74
75 static void net_socket_writable(void *opaque)
76 {
77 NetSocketState *s = opaque;
78
79 net_socket_write_poll(s, false);
80
81 qemu_flush_queued_packets(&s->nc);
82 }
83
84 static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size)
85 {
86 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
87 uint32_t len = htonl(size);
88 struct iovec iov[] = {
89 {
90 .iov_base = &len,
91 .iov_len = sizeof(len),
92 }, {
93 .iov_base = (void *)buf,
94 .iov_len = size,
95 },
96 };
97 size_t remaining;
98 ssize_t ret;
99
100 remaining = iov_size(iov, 2) - s->send_index;
101 ret = iov_send(s->fd, iov, 2, s->send_index, remaining);
102
103 if (ret == -1 && errno == EAGAIN) {
104 ret = 0; /* handled further down */
105 }
106 if (ret == -1) {
107 s->send_index = 0;
108 return -errno;
109 }
110 if (ret < (ssize_t)remaining) {
111 s->send_index += ret;
112 net_socket_write_poll(s, true);
113 return 0;
114 }
115 s->send_index = 0;
116 return size;
117 }
118
119 static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size)
120 {
121 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
122 ssize_t ret;
123
124 do {
125 ret = qemu_sendto(s->fd, buf, size, 0,
126 (struct sockaddr *)&s->dgram_dst,
127 sizeof(s->dgram_dst));
128 } while (ret == -1 && errno == EINTR);
129
130 if (ret == -1 && errno == EAGAIN) {
131 net_socket_write_poll(s, true);
132 return 0;
133 }
134 return ret;
135 }
136
137 static void net_socket_send_completed(NetClientState *nc, ssize_t len)
138 {
139 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
140
141 if (!s->read_poll) {
142 net_socket_read_poll(s, true);
143 }
144 }
145
146 static void net_socket_send(void *opaque)
147 {
148 NetSocketState *s = opaque;
149 int size;
150 unsigned l;
151 uint8_t buf1[NET_BUFSIZE];
152 const uint8_t *buf;
153
154 size = qemu_recv(s->fd, buf1, sizeof(buf1), 0);
155 if (size < 0) {
156 if (errno != EWOULDBLOCK)
157 goto eoc;
158 } else if (size == 0) {
159 /* end of connection */
160 eoc:
161 net_socket_read_poll(s, false);
162 net_socket_write_poll(s, false);
163 if (s->listen_fd != -1) {
164 qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s);
165 }
166 closesocket(s->fd);
167
168 s->fd = -1;
169 s->state = 0;
170 s->index = 0;
171 s->packet_len = 0;
172 s->nc.link_down = true;
173 memset(s->buf, 0, sizeof(s->buf));
174 memset(s->nc.info_str, 0, sizeof(s->nc.info_str));
175
176 return;
177 }
178 buf = buf1;
179 while (size > 0) {
180 /* reassemble a packet from the network */
181 switch(s->state) {
182 case 0:
183 l = 4 - s->index;
184 if (l > size)
185 l = size;
186 memcpy(s->buf + s->index, buf, l);
187 buf += l;
188 size -= l;
189 s->index += l;
190 if (s->index == 4) {
191 /* got length */
192 s->packet_len = ntohl(*(uint32_t *)s->buf);
193 s->index = 0;
194 s->state = 1;
195 }
196 break;
197 case 1:
198 l = s->packet_len - s->index;
199 if (l > size)
200 l = size;
201 if (s->index + l <= sizeof(s->buf)) {
202 memcpy(s->buf + s->index, buf, l);
203 } else {
204 fprintf(stderr, "serious error: oversized packet received,"
205 "connection terminated.\n");
206 s->state = 0;
207 goto eoc;
208 }
209
210 s->index += l;
211 buf += l;
212 size -= l;
213 if (s->index >= s->packet_len) {
214 s->index = 0;
215 s->state = 0;
216 if (qemu_send_packet_async(&s->nc, s->buf, s->packet_len,
217 net_socket_send_completed) == 0) {
218 net_socket_read_poll(s, false);
219 break;
220 }
221 }
222 break;
223 }
224 }
225 }
226
227 static void net_socket_send_dgram(void *opaque)
228 {
229 NetSocketState *s = opaque;
230 int size;
231
232 size = qemu_recv(s->fd, s->buf, sizeof(s->buf), 0);
233 if (size < 0)
234 return;
235 if (size == 0) {
236 /* end of connection */
237 net_socket_read_poll(s, false);
238 net_socket_write_poll(s, false);
239 return;
240 }
241 if (qemu_send_packet_async(&s->nc, s->buf, size,
242 net_socket_send_completed) == 0) {
243 net_socket_read_poll(s, false);
244 }
245 }
246
247 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, struct in_addr *localaddr)
248 {
249 struct ip_mreq imr;
250 int fd;
251 int val, ret;
252 #ifdef __OpenBSD__
253 unsigned char loop;
254 #else
255 int loop;
256 #endif
257
258 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
259 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) "
260 "does not contain a multicast address\n",
261 inet_ntoa(mcastaddr->sin_addr),
262 (int)ntohl(mcastaddr->sin_addr.s_addr));
263 return -1;
264
265 }
266 fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
267 if (fd < 0) {
268 perror("socket(PF_INET, SOCK_DGRAM)");
269 return -1;
270 }
271
272 /* Allow multiple sockets to bind the same multicast ip and port by setting
273 * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set
274 * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR
275 * only on posix systems.
276 */
277 val = 1;
278 ret = qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
279 if (ret < 0) {
280 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
281 goto fail;
282 }
283
284 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
285 if (ret < 0) {
286 perror("bind");
287 goto fail;
288 }
289
290 /* Add host to multicast group */
291 imr.imr_multiaddr = mcastaddr->sin_addr;
292 if (localaddr) {
293 imr.imr_interface = *localaddr;
294 } else {
295 imr.imr_interface.s_addr = htonl(INADDR_ANY);
296 }
297
298 ret = qemu_setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
299 &imr, sizeof(struct ip_mreq));
300 if (ret < 0) {
301 perror("setsockopt(IP_ADD_MEMBERSHIP)");
302 goto fail;
303 }
304
305 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
306 loop = 1;
307 ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
308 &loop, sizeof(loop));
309 if (ret < 0) {
310 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
311 goto fail;
312 }
313
314 /* If a bind address is given, only send packets from that address */
315 if (localaddr != NULL) {
316 ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF,
317 localaddr, sizeof(*localaddr));
318 if (ret < 0) {
319 perror("setsockopt(IP_MULTICAST_IF)");
320 goto fail;
321 }
322 }
323
324 qemu_set_nonblock(fd);
325 return fd;
326 fail:
327 if (fd >= 0)
328 closesocket(fd);
329 return -1;
330 }
331
332 static void net_socket_cleanup(NetClientState *nc)
333 {
334 NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc);
335 if (s->fd != -1) {
336 net_socket_read_poll(s, false);
337 net_socket_write_poll(s, false);
338 close(s->fd);
339 s->fd = -1;
340 }
341 if (s->listen_fd != -1) {
342 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
343 closesocket(s->listen_fd);
344 s->listen_fd = -1;
345 }
346 }
347
348 static NetClientInfo net_dgram_socket_info = {
349 .type = NET_CLIENT_OPTIONS_KIND_SOCKET,
350 .size = sizeof(NetSocketState),
351 .receive = net_socket_receive_dgram,
352 .cleanup = net_socket_cleanup,
353 };
354
355 static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
356 const char *model,
357 const char *name,
358 int fd, int is_connected)
359 {
360 struct sockaddr_in saddr;
361 int newfd;
362 socklen_t saddr_len = sizeof(saddr);
363 NetClientState *nc;
364 NetSocketState *s;
365
366 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
367 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
368 * by ONLY ONE process: we must "clone" this dgram socket --jjo
369 */
370
371 if (is_connected) {
372 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
373 /* must be bound */
374 if (saddr.sin_addr.s_addr == 0) {
375 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, "
376 "cannot setup multicast dst addr\n", fd);
377 goto err;
378 }
379 /* clone dgram socket */
380 newfd = net_socket_mcast_create(&saddr, NULL);
381 if (newfd < 0) {
382 /* error already reported by net_socket_mcast_create() */
383 goto err;
384 }
385 /* clone newfd to fd, close newfd */
386 dup2(newfd, fd);
387 close(newfd);
388
389 } else {
390 fprintf(stderr,
391 "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
392 fd, strerror(errno));
393 goto err;
394 }
395 }
396
397 nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name);
398
399 s = DO_UPCAST(NetSocketState, nc, nc);
400
401 s->fd = fd;
402 s->listen_fd = -1;
403 s->send_fn = net_socket_send_dgram;
404 net_socket_read_poll(s, true);
405
406 /* mcast: save bound address as dst */
407 if (is_connected) {
408 s->dgram_dst = saddr;
409 snprintf(nc->info_str, sizeof(nc->info_str),
410 "socket: fd=%d (cloned mcast=%s:%d)",
411 fd, inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
412 } else {
413 snprintf(nc->info_str, sizeof(nc->info_str),
414 "socket: fd=%d", fd);
415 }
416
417 return s;
418
419 err:
420 closesocket(fd);
421 return NULL;
422 }
423
424 static void net_socket_connect(void *opaque)
425 {
426 NetSocketState *s = opaque;
427 s->send_fn = net_socket_send;
428 net_socket_read_poll(s, true);
429 }
430
431 static NetClientInfo net_socket_info = {
432 .type = NET_CLIENT_OPTIONS_KIND_SOCKET,
433 .size = sizeof(NetSocketState),
434 .receive = net_socket_receive,
435 .cleanup = net_socket_cleanup,
436 };
437
438 static NetSocketState *net_socket_fd_init_stream(NetClientState *peer,
439 const char *model,
440 const char *name,
441 int fd, int is_connected)
442 {
443 NetClientState *nc;
444 NetSocketState *s;
445
446 nc = qemu_new_net_client(&net_socket_info, peer, model, name);
447
448 snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd);
449
450 s = DO_UPCAST(NetSocketState, nc, nc);
451
452 s->fd = fd;
453 s->listen_fd = -1;
454
455 /* Disable Nagle algorithm on TCP sockets to reduce latency */
456 socket_set_nodelay(fd);
457
458 if (is_connected) {
459 net_socket_connect(s);
460 } else {
461 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
462 }
463 return s;
464 }
465
466 static NetSocketState *net_socket_fd_init(NetClientState *peer,
467 const char *model, const char *name,
468 int fd, int is_connected)
469 {
470 int so_type = -1, optlen=sizeof(so_type);
471
472 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
473 (socklen_t *)&optlen)< 0) {
474 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n",
475 fd);
476 closesocket(fd);
477 return NULL;
478 }
479 switch(so_type) {
480 case SOCK_DGRAM:
481 return net_socket_fd_init_dgram(peer, model, name, fd, is_connected);
482 case SOCK_STREAM:
483 return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
484 default:
485 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
486 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
487 return net_socket_fd_init_stream(peer, model, name, fd, is_connected);
488 }
489 return NULL;
490 }
491
492 static void net_socket_accept(void *opaque)
493 {
494 NetSocketState *s = opaque;
495 struct sockaddr_in saddr;
496 socklen_t len;
497 int fd;
498
499 for(;;) {
500 len = sizeof(saddr);
501 fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len);
502 if (fd < 0 && errno != EINTR) {
503 return;
504 } else if (fd >= 0) {
505 qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
506 break;
507 }
508 }
509
510 s->fd = fd;
511 s->nc.link_down = false;
512 net_socket_connect(s);
513 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
514 "socket: connection from %s:%d",
515 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
516 }
517
518 static int net_socket_listen_init(NetClientState *peer,
519 const char *model,
520 const char *name,
521 const char *host_str)
522 {
523 NetClientState *nc;
524 NetSocketState *s;
525 struct sockaddr_in saddr;
526 int fd, ret;
527
528 if (parse_host_port(&saddr, host_str) < 0)
529 return -1;
530
531 fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
532 if (fd < 0) {
533 perror("socket");
534 return -1;
535 }
536 qemu_set_nonblock(fd);
537
538 socket_set_fast_reuse(fd);
539
540 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
541 if (ret < 0) {
542 perror("bind");
543 closesocket(fd);
544 return -1;
545 }
546 ret = listen(fd, 0);
547 if (ret < 0) {
548 perror("listen");
549 closesocket(fd);
550 return -1;
551 }
552
553 nc = qemu_new_net_client(&net_socket_info, peer, model, name);
554 s = DO_UPCAST(NetSocketState, nc, nc);
555 s->fd = -1;
556 s->listen_fd = fd;
557 s->nc.link_down = true;
558
559 qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s);
560 return 0;
561 }
562
563 static int net_socket_connect_init(NetClientState *peer,
564 const char *model,
565 const char *name,
566 const char *host_str)
567 {
568 NetSocketState *s;
569 int fd, connected, ret;
570 struct sockaddr_in saddr;
571
572 if (parse_host_port(&saddr, host_str) < 0)
573 return -1;
574
575 fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
576 if (fd < 0) {
577 perror("socket");
578 return -1;
579 }
580 qemu_set_nonblock(fd);
581
582 connected = 0;
583 for(;;) {
584 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
585 if (ret < 0) {
586 if (errno == EINTR || errno == EWOULDBLOCK) {
587 /* continue */
588 } else if (errno == EINPROGRESS ||
589 errno == EALREADY ||
590 errno == EINVAL) {
591 break;
592 } else {
593 perror("connect");
594 closesocket(fd);
595 return -1;
596 }
597 } else {
598 connected = 1;
599 break;
600 }
601 }
602 s = net_socket_fd_init(peer, model, name, fd, connected);
603 if (!s)
604 return -1;
605 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
606 "socket: connect to %s:%d",
607 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
608 return 0;
609 }
610
611 static int net_socket_mcast_init(NetClientState *peer,
612 const char *model,
613 const char *name,
614 const char *host_str,
615 const char *localaddr_str)
616 {
617 NetSocketState *s;
618 int fd;
619 struct sockaddr_in saddr;
620 struct in_addr localaddr, *param_localaddr;
621
622 if (parse_host_port(&saddr, host_str) < 0)
623 return -1;
624
625 if (localaddr_str != NULL) {
626 if (inet_aton(localaddr_str, &localaddr) == 0)
627 return -1;
628 param_localaddr = &localaddr;
629 } else {
630 param_localaddr = NULL;
631 }
632
633 fd = net_socket_mcast_create(&saddr, param_localaddr);
634 if (fd < 0)
635 return -1;
636
637 s = net_socket_fd_init(peer, model, name, fd, 0);
638 if (!s)
639 return -1;
640
641 s->dgram_dst = saddr;
642
643 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
644 "socket: mcast=%s:%d",
645 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
646 return 0;
647
648 }
649
650 static int net_socket_udp_init(NetClientState *peer,
651 const char *model,
652 const char *name,
653 const char *rhost,
654 const char *lhost)
655 {
656 NetSocketState *s;
657 int fd, ret;
658 struct sockaddr_in laddr, raddr;
659
660 if (parse_host_port(&laddr, lhost) < 0) {
661 return -1;
662 }
663
664 if (parse_host_port(&raddr, rhost) < 0) {
665 return -1;
666 }
667
668 fd = qemu_socket(PF_INET, SOCK_DGRAM, 0);
669 if (fd < 0) {
670 perror("socket(PF_INET, SOCK_DGRAM)");
671 return -1;
672 }
673
674 ret = socket_set_fast_reuse(fd);
675 if (ret < 0) {
676 closesocket(fd);
677 return -1;
678 }
679 ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr));
680 if (ret < 0) {
681 perror("bind");
682 closesocket(fd);
683 return -1;
684 }
685 qemu_set_nonblock(fd);
686
687 s = net_socket_fd_init(peer, model, name, fd, 0);
688 if (!s) {
689 return -1;
690 }
691
692 s->dgram_dst = raddr;
693
694 snprintf(s->nc.info_str, sizeof(s->nc.info_str),
695 "socket: udp=%s:%d",
696 inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port));
697 return 0;
698 }
699
700 int net_init_socket(const NetClientOptions *opts, const char *name,
701 NetClientState *peer, Error **errp)
702 {
703 /* FIXME error_setg(errp, ...) on failure */
704 Error *err = NULL;
705 const NetdevSocketOptions *sock;
706
707 assert(opts->type == NET_CLIENT_OPTIONS_KIND_SOCKET);
708 sock = opts->u.socket.data;
709
710 if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast +
711 sock->has_udp != 1) {
712 error_report("exactly one of fd=, listen=, connect=, mcast= or udp="
713 " is required");
714 return -1;
715 }
716
717 if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) {
718 error_report("localaddr= is only valid with mcast= or udp=");
719 return -1;
720 }
721
722 if (sock->has_fd) {
723 int fd;
724
725 fd = monitor_fd_param(cur_mon, sock->fd, &err);
726 if (fd == -1) {
727 error_report_err(err);
728 return -1;
729 }
730 qemu_set_nonblock(fd);
731 if (!net_socket_fd_init(peer, "socket", name, fd, 1)) {
732 return -1;
733 }
734 return 0;
735 }
736
737 if (sock->has_listen) {
738 if (net_socket_listen_init(peer, "socket", name, sock->listen) == -1) {
739 return -1;
740 }
741 return 0;
742 }
743
744 if (sock->has_connect) {
745 if (net_socket_connect_init(peer, "socket", name, sock->connect) ==
746 -1) {
747 return -1;
748 }
749 return 0;
750 }
751
752 if (sock->has_mcast) {
753 /* if sock->localaddr is missing, it has been initialized to "all bits
754 * zero" */
755 if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
756 sock->localaddr) == -1) {
757 return -1;
758 }
759 return 0;
760 }
761
762 assert(sock->has_udp);
763 if (!sock->has_localaddr) {
764 error_report("localaddr= is mandatory with udp=");
765 return -1;
766 }
767 if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr) ==
768 -1) {
769 return -1;
770 }
771 return 0;
772 }