142281ac9SMark McLoughlin /* 242281ac9SMark McLoughlin * QEMU System Emulator 342281ac9SMark McLoughlin * 442281ac9SMark McLoughlin * Copyright (c) 2003-2008 Fabrice Bellard 542281ac9SMark McLoughlin * 642281ac9SMark McLoughlin * Permission is hereby granted, free of charge, to any person obtaining a copy 742281ac9SMark McLoughlin * of this software and associated documentation files (the "Software"), to deal 842281ac9SMark McLoughlin * in the Software without restriction, including without limitation the rights 942281ac9SMark McLoughlin * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 1042281ac9SMark McLoughlin * copies of the Software, and to permit persons to whom the Software is 1142281ac9SMark McLoughlin * furnished to do so, subject to the following conditions: 1242281ac9SMark McLoughlin * 1342281ac9SMark McLoughlin * The above copyright notice and this permission notice shall be included in 1442281ac9SMark McLoughlin * all copies or substantial portions of the Software. 1542281ac9SMark McLoughlin * 1642281ac9SMark McLoughlin * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1742281ac9SMark McLoughlin * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1842281ac9SMark McLoughlin * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 1942281ac9SMark McLoughlin * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 2042281ac9SMark McLoughlin * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 2142281ac9SMark McLoughlin * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 2242281ac9SMark McLoughlin * THE SOFTWARE. 2342281ac9SMark McLoughlin */ 242744d920SPeter Maydell #include "qemu/osdep.h" 2542281ac9SMark McLoughlin 261422e32dSPaolo Bonzini #include "net/net.h" 27a245fc18SPaolo Bonzini #include "clients.h" 2883c9089eSPaolo Bonzini #include "monitor/monitor.h" 29da34e65cSMarkus Armbruster #include "qapi/error.h" 301de7afc9SPaolo Bonzini #include "qemu/error-report.h" 311de7afc9SPaolo Bonzini #include "qemu/option.h" 321de7afc9SPaolo Bonzini #include "qemu/sockets.h" 331de7afc9SPaolo Bonzini #include "qemu/iov.h" 346a1751b7SAlex Bligh #include "qemu/main-loop.h" 3542281ac9SMark McLoughlin 3642281ac9SMark McLoughlin typedef struct NetSocketState { 374e68f7a0SStefan Hajnoczi NetClientState nc; 38011de2b5SZhi Yong Wu int listen_fd; 3942281ac9SMark McLoughlin int fd; 4016a3df40SZhang Chen SocketReadState rs; 4145a7f54aSStefan Hajnoczi unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */ 4242281ac9SMark McLoughlin struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ 43863f678fSStefan Hajnoczi IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */ 44863f678fSStefan Hajnoczi bool read_poll; /* waiting to receive data? */ 45863f678fSStefan Hajnoczi bool write_poll; /* waiting to transmit data? */ 4642281ac9SMark McLoughlin } NetSocketState; 4742281ac9SMark McLoughlin 48011de2b5SZhi Yong Wu static void net_socket_accept(void *opaque); 49863f678fSStefan Hajnoczi static void net_socket_writable(void *opaque); 50863f678fSStefan Hajnoczi 51863f678fSStefan Hajnoczi static void net_socket_update_fd_handler(NetSocketState *s) 52863f678fSStefan Hajnoczi { 5382e1cc4bSFam Zheng qemu_set_fd_handler(s->fd, 54863f678fSStefan Hajnoczi s->read_poll ? s->send_fn : NULL, 55863f678fSStefan Hajnoczi s->write_poll ? net_socket_writable : NULL, 56863f678fSStefan Hajnoczi s); 57863f678fSStefan Hajnoczi } 58863f678fSStefan Hajnoczi 59863f678fSStefan Hajnoczi static void net_socket_read_poll(NetSocketState *s, bool enable) 60863f678fSStefan Hajnoczi { 61863f678fSStefan Hajnoczi s->read_poll = enable; 62863f678fSStefan Hajnoczi net_socket_update_fd_handler(s); 63863f678fSStefan Hajnoczi } 64863f678fSStefan Hajnoczi 65863f678fSStefan Hajnoczi static void net_socket_write_poll(NetSocketState *s, bool enable) 66863f678fSStefan Hajnoczi { 67863f678fSStefan Hajnoczi s->write_poll = enable; 68863f678fSStefan Hajnoczi net_socket_update_fd_handler(s); 69863f678fSStefan Hajnoczi } 70863f678fSStefan Hajnoczi 71863f678fSStefan Hajnoczi static void net_socket_writable(void *opaque) 72863f678fSStefan Hajnoczi { 73863f678fSStefan Hajnoczi NetSocketState *s = opaque; 74863f678fSStefan Hajnoczi 75863f678fSStefan Hajnoczi net_socket_write_poll(s, false); 76863f678fSStefan Hajnoczi 77863f678fSStefan Hajnoczi qemu_flush_queued_packets(&s->nc); 78863f678fSStefan Hajnoczi } 7942281ac9SMark McLoughlin 804e68f7a0SStefan Hajnoczi static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size) 8142281ac9SMark McLoughlin { 82564f63e3SMark McLoughlin NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); 8345a7f54aSStefan Hajnoczi uint32_t len = htonl(size); 8445a7f54aSStefan Hajnoczi struct iovec iov[] = { 8545a7f54aSStefan Hajnoczi { 8645a7f54aSStefan Hajnoczi .iov_base = &len, 8745a7f54aSStefan Hajnoczi .iov_len = sizeof(len), 8845a7f54aSStefan Hajnoczi }, { 8945a7f54aSStefan Hajnoczi .iov_base = (void *)buf, 9045a7f54aSStefan Hajnoczi .iov_len = size, 9145a7f54aSStefan Hajnoczi }, 9245a7f54aSStefan Hajnoczi }; 9345a7f54aSStefan Hajnoczi size_t remaining; 9445a7f54aSStefan Hajnoczi ssize_t ret; 9542281ac9SMark McLoughlin 9645a7f54aSStefan Hajnoczi remaining = iov_size(iov, 2) - s->send_index; 9745a7f54aSStefan Hajnoczi ret = iov_send(s->fd, iov, 2, s->send_index, remaining); 9845a7f54aSStefan Hajnoczi 9945a7f54aSStefan Hajnoczi if (ret == -1 && errno == EAGAIN) { 10045a7f54aSStefan Hajnoczi ret = 0; /* handled further down */ 10145a7f54aSStefan Hajnoczi } 10245a7f54aSStefan Hajnoczi if (ret == -1) { 10345a7f54aSStefan Hajnoczi s->send_index = 0; 10445a7f54aSStefan Hajnoczi return -errno; 10545a7f54aSStefan Hajnoczi } 10645a7f54aSStefan Hajnoczi if (ret < (ssize_t)remaining) { 10745a7f54aSStefan Hajnoczi s->send_index += ret; 10845a7f54aSStefan Hajnoczi net_socket_write_poll(s, true); 10945a7f54aSStefan Hajnoczi return 0; 11045a7f54aSStefan Hajnoczi } 11145a7f54aSStefan Hajnoczi s->send_index = 0; 11245a7f54aSStefan Hajnoczi return size; 11342281ac9SMark McLoughlin } 11442281ac9SMark McLoughlin 1154e68f7a0SStefan Hajnoczi static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size) 11642281ac9SMark McLoughlin { 117564f63e3SMark McLoughlin NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); 118213fd508SStefan Hajnoczi ssize_t ret; 11942281ac9SMark McLoughlin 12037b0b24eSNikita Ivanov ret = RETRY_ON_EINTR( 12137b0b24eSNikita Ivanov s->dgram_dst.sin_family != AF_UNIX ? 12237b0b24eSNikita Ivanov sendto(s->fd, buf, size, 0, 123213fd508SStefan Hajnoczi (struct sockaddr *)&s->dgram_dst, 12437b0b24eSNikita Ivanov sizeof(s->dgram_dst)) : 12537b0b24eSNikita Ivanov send(s->fd, buf, size, 0) 12637b0b24eSNikita Ivanov ); 127213fd508SStefan Hajnoczi 128213fd508SStefan Hajnoczi if (ret == -1 && errno == EAGAIN) { 129213fd508SStefan Hajnoczi net_socket_write_poll(s, true); 130213fd508SStefan Hajnoczi return 0; 131213fd508SStefan Hajnoczi } 132213fd508SStefan Hajnoczi return ret; 13342281ac9SMark McLoughlin } 13442281ac9SMark McLoughlin 1356e99c631SFam Zheng static void net_socket_send_completed(NetClientState *nc, ssize_t len) 1366e99c631SFam Zheng { 1376e99c631SFam Zheng NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); 1386e99c631SFam Zheng 1396e99c631SFam Zheng if (!s->read_poll) { 1406e99c631SFam Zheng net_socket_read_poll(s, true); 1416e99c631SFam Zheng } 1426e99c631SFam Zheng } 1436e99c631SFam Zheng 14416a3df40SZhang Chen static void net_socket_rs_finalize(SocketReadState *rs) 14516a3df40SZhang Chen { 14616a3df40SZhang Chen NetSocketState *s = container_of(rs, NetSocketState, rs); 14716a3df40SZhang Chen 14816a3df40SZhang Chen if (qemu_send_packet_async(&s->nc, rs->buf, 14916a3df40SZhang Chen rs->packet_len, 15016a3df40SZhang Chen net_socket_send_completed) == 0) { 15116a3df40SZhang Chen net_socket_read_poll(s, false); 15216a3df40SZhang Chen } 15316a3df40SZhang Chen } 15416a3df40SZhang Chen 15542281ac9SMark McLoughlin static void net_socket_send(void *opaque) 15642281ac9SMark McLoughlin { 15742281ac9SMark McLoughlin NetSocketState *s = opaque; 158b16a44e1SDaniel P. Berrange int size; 15916a3df40SZhang Chen int ret; 160d32fcad3SScott Feldman uint8_t buf1[NET_BUFSIZE]; 16142281ac9SMark McLoughlin const uint8_t *buf; 16242281ac9SMark McLoughlin 163e7b79428SMarc-André Lureau size = recv(s->fd, buf1, sizeof(buf1), 0); 16442281ac9SMark McLoughlin if (size < 0) { 165b16a44e1SDaniel P. Berrange if (errno != EWOULDBLOCK) 16642281ac9SMark McLoughlin goto eoc; 16742281ac9SMark McLoughlin } else if (size == 0) { 16842281ac9SMark McLoughlin /* end of connection */ 16942281ac9SMark McLoughlin eoc: 170863f678fSStefan Hajnoczi net_socket_read_poll(s, false); 171863f678fSStefan Hajnoczi net_socket_write_poll(s, false); 172011de2b5SZhi Yong Wu if (s->listen_fd != -1) { 173011de2b5SZhi Yong Wu qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); 174011de2b5SZhi Yong Wu } 17525657fc6SMarc-André Lureau close(s->fd); 176011de2b5SZhi Yong Wu 177011de2b5SZhi Yong Wu s->fd = -1; 1783cde5ea2SZhang Chen net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); 179011de2b5SZhi Yong Wu s->nc.link_down = true; 180ac149498SStefan Weil via qemu_set_info_str(&s->nc, "%s", ""); 181011de2b5SZhi Yong Wu 18242281ac9SMark McLoughlin return; 18342281ac9SMark McLoughlin } 18442281ac9SMark McLoughlin buf = buf1; 18542281ac9SMark McLoughlin 18616a3df40SZhang Chen ret = net_fill_rstate(&s->rs, buf, size); 18716a3df40SZhang Chen 18816a3df40SZhang Chen if (ret == -1) { 18916a3df40SZhang Chen goto eoc; 19042281ac9SMark McLoughlin } 19142281ac9SMark McLoughlin } 19242281ac9SMark McLoughlin 19342281ac9SMark McLoughlin static void net_socket_send_dgram(void *opaque) 19442281ac9SMark McLoughlin { 19542281ac9SMark McLoughlin NetSocketState *s = opaque; 19642281ac9SMark McLoughlin int size; 19742281ac9SMark McLoughlin 198e7b79428SMarc-André Lureau size = recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); 19942281ac9SMark McLoughlin if (size < 0) 20042281ac9SMark McLoughlin return; 20142281ac9SMark McLoughlin if (size == 0) { 20242281ac9SMark McLoughlin /* end of connection */ 203863f678fSStefan Hajnoczi net_socket_read_poll(s, false); 204863f678fSStefan Hajnoczi net_socket_write_poll(s, false); 20542281ac9SMark McLoughlin return; 20642281ac9SMark McLoughlin } 20716a3df40SZhang Chen if (qemu_send_packet_async(&s->nc, s->rs.buf, size, 2086e99c631SFam Zheng net_socket_send_completed) == 0) { 2096e99c631SFam Zheng net_socket_read_poll(s, false); 2106e99c631SFam Zheng } 21142281ac9SMark McLoughlin } 21242281ac9SMark McLoughlin 213c37f0bb1SMao Zhongyi static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, 214c37f0bb1SMao Zhongyi struct in_addr *localaddr, 215c37f0bb1SMao Zhongyi Error **errp) 21642281ac9SMark McLoughlin { 21742281ac9SMark McLoughlin struct ip_mreq imr; 21842281ac9SMark McLoughlin int fd; 21942281ac9SMark McLoughlin int val, ret; 22023ddf2bbSBrad #ifdef __OpenBSD__ 22123ddf2bbSBrad unsigned char loop; 22223ddf2bbSBrad #else 22323ddf2bbSBrad int loop; 22423ddf2bbSBrad #endif 22523ddf2bbSBrad 22642281ac9SMark McLoughlin if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { 227c37f0bb1SMao Zhongyi error_setg(errp, "specified mcastaddr %s (0x%08x) " 228c37f0bb1SMao Zhongyi "does not contain a multicast address", 22942281ac9SMark McLoughlin inet_ntoa(mcastaddr->sin_addr), 23042281ac9SMark McLoughlin (int)ntohl(mcastaddr->sin_addr.s_addr)); 23142281ac9SMark McLoughlin return -1; 23242281ac9SMark McLoughlin } 233c37f0bb1SMao Zhongyi 23440ff6d7eSKevin Wolf fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); 23542281ac9SMark McLoughlin if (fd < 0) { 236c37f0bb1SMao Zhongyi error_setg_errno(errp, errno, "can't create datagram socket"); 23742281ac9SMark McLoughlin return -1; 23842281ac9SMark McLoughlin } 23942281ac9SMark McLoughlin 240bcbe92fbSSebastian Ottlik /* Allow multiple sockets to bind the same multicast ip and port by setting 241bcbe92fbSSebastian Ottlik * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set 242bcbe92fbSSebastian Ottlik * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR 243bcbe92fbSSebastian Ottlik * only on posix systems. 244bcbe92fbSSebastian Ottlik */ 24542281ac9SMark McLoughlin val = 1; 246e7b79428SMarc-André Lureau ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); 24742281ac9SMark McLoughlin if (ret < 0) { 248c37f0bb1SMao Zhongyi error_setg_errno(errp, errno, 249c37f0bb1SMao Zhongyi "can't set socket option SO_REUSEADDR"); 25042281ac9SMark McLoughlin goto fail; 25142281ac9SMark McLoughlin } 25242281ac9SMark McLoughlin 25342281ac9SMark McLoughlin ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); 25442281ac9SMark McLoughlin if (ret < 0) { 255c37f0bb1SMao Zhongyi error_setg_errno(errp, errno, "can't bind ip=%s to socket", 256c37f0bb1SMao Zhongyi inet_ntoa(mcastaddr->sin_addr)); 25742281ac9SMark McLoughlin goto fail; 25842281ac9SMark McLoughlin } 25942281ac9SMark McLoughlin 26042281ac9SMark McLoughlin /* Add host to multicast group */ 26142281ac9SMark McLoughlin imr.imr_multiaddr = mcastaddr->sin_addr; 2623a75e74cSMike Ryan if (localaddr) { 2633a75e74cSMike Ryan imr.imr_interface = *localaddr; 2643a75e74cSMike Ryan } else { 26542281ac9SMark McLoughlin imr.imr_interface.s_addr = htonl(INADDR_ANY); 2663a75e74cSMike Ryan } 26742281ac9SMark McLoughlin 268e7b79428SMarc-André Lureau ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, 2699957fc7fSStefan Weil &imr, sizeof(struct ip_mreq)); 27042281ac9SMark McLoughlin if (ret < 0) { 271c37f0bb1SMao Zhongyi error_setg_errno(errp, errno, 272c37f0bb1SMao Zhongyi "can't add socket to multicast group %s", 273c37f0bb1SMao Zhongyi inet_ntoa(imr.imr_multiaddr)); 27442281ac9SMark McLoughlin goto fail; 27542281ac9SMark McLoughlin } 27642281ac9SMark McLoughlin 27742281ac9SMark McLoughlin /* Force mcast msgs to loopback (eg. several QEMUs in same host */ 27823ddf2bbSBrad loop = 1; 279e7b79428SMarc-André Lureau ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, 2809957fc7fSStefan Weil &loop, sizeof(loop)); 28142281ac9SMark McLoughlin if (ret < 0) { 282c37f0bb1SMao Zhongyi error_setg_errno(errp, errno, 283c37f0bb1SMao Zhongyi "can't force multicast message to loopback"); 28442281ac9SMark McLoughlin goto fail; 28542281ac9SMark McLoughlin } 28642281ac9SMark McLoughlin 2873a75e74cSMike Ryan /* If a bind address is given, only send packets from that address */ 2883a75e74cSMike Ryan if (localaddr != NULL) { 289e7b79428SMarc-André Lureau ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, 2909957fc7fSStefan Weil localaddr, sizeof(*localaddr)); 2913a75e74cSMike Ryan if (ret < 0) { 292c37f0bb1SMao Zhongyi error_setg_errno(errp, errno, 293c37f0bb1SMao Zhongyi "can't set the default network send interface"); 2943a75e74cSMike Ryan goto fail; 2953a75e74cSMike Ryan } 2963a75e74cSMike Ryan } 2973a75e74cSMike Ryan 298ff5927baSMarc-André Lureau qemu_socket_set_nonblock(fd); 29942281ac9SMark McLoughlin return fd; 30042281ac9SMark McLoughlin fail: 30142281ac9SMark McLoughlin if (fd >= 0) 30225657fc6SMarc-André Lureau close(fd); 30342281ac9SMark McLoughlin return -1; 30442281ac9SMark McLoughlin } 30542281ac9SMark McLoughlin 3064e68f7a0SStefan Hajnoczi static void net_socket_cleanup(NetClientState *nc) 30742281ac9SMark McLoughlin { 308564f63e3SMark McLoughlin NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); 309011de2b5SZhi Yong Wu if (s->fd != -1) { 310863f678fSStefan Hajnoczi net_socket_read_poll(s, false); 311863f678fSStefan Hajnoczi net_socket_write_poll(s, false); 31242281ac9SMark McLoughlin close(s->fd); 313011de2b5SZhi Yong Wu s->fd = -1; 314011de2b5SZhi Yong Wu } 315011de2b5SZhi Yong Wu if (s->listen_fd != -1) { 316011de2b5SZhi Yong Wu qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); 31725657fc6SMarc-André Lureau close(s->listen_fd); 318011de2b5SZhi Yong Wu s->listen_fd = -1; 319011de2b5SZhi Yong Wu } 32042281ac9SMark McLoughlin } 32142281ac9SMark McLoughlin 322564f63e3SMark McLoughlin static NetClientInfo net_dgram_socket_info = { 323f394b2e2SEric Blake .type = NET_CLIENT_DRIVER_SOCKET, 324564f63e3SMark McLoughlin .size = sizeof(NetSocketState), 325564f63e3SMark McLoughlin .receive = net_socket_receive_dgram, 326564f63e3SMark McLoughlin .cleanup = net_socket_cleanup, 327564f63e3SMark McLoughlin }; 328564f63e3SMark McLoughlin 3294e68f7a0SStefan Hajnoczi static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, 33042281ac9SMark McLoughlin const char *model, 33142281ac9SMark McLoughlin const char *name, 3320f8c289aSJens Freimann int fd, int is_connected, 333c37f0bb1SMao Zhongyi const char *mcast, 334c37f0bb1SMao Zhongyi Error **errp) 33542281ac9SMark McLoughlin { 33642281ac9SMark McLoughlin struct sockaddr_in saddr; 33742281ac9SMark McLoughlin int newfd; 3384e68f7a0SStefan Hajnoczi NetClientState *nc; 33942281ac9SMark McLoughlin NetSocketState *s; 340fdec16e3SMarc-André Lureau SocketAddress *sa; 341fdec16e3SMarc-André Lureau SocketAddressType sa_type; 342fdec16e3SMarc-André Lureau 343fdec16e3SMarc-André Lureau sa = socket_local_address(fd, errp); 344fdec16e3SMarc-André Lureau if (!sa) { 345fdec16e3SMarc-André Lureau return NULL; 346fdec16e3SMarc-André Lureau } 347fdec16e3SMarc-André Lureau sa_type = sa->type; 348fdec16e3SMarc-André Lureau qapi_free_SocketAddress(sa); 34942281ac9SMark McLoughlin 35042281ac9SMark McLoughlin /* fd passed: multicast: "learn" dgram_dst address from bound address and save it 35142281ac9SMark McLoughlin * Because this may be "shared" socket from a "master" process, datagrams would be recv() 35242281ac9SMark McLoughlin * by ONLY ONE process: we must "clone" this dgram socket --jjo 35342281ac9SMark McLoughlin */ 35442281ac9SMark McLoughlin 3550f8c289aSJens Freimann if (is_connected && mcast != NULL) { 356bcd4dfd6SMao Zhongyi if (parse_host_port(&saddr, mcast, errp) < 0) { 3570f8c289aSJens Freimann goto err; 3580f8c289aSJens Freimann } 35942281ac9SMark McLoughlin /* must be bound */ 36042281ac9SMark McLoughlin if (saddr.sin_addr.s_addr == 0) { 361c37f0bb1SMao Zhongyi error_setg(errp, "can't setup multicast destination address"); 362e5d1fca0SStefan Hajnoczi goto err; 36342281ac9SMark McLoughlin } 36442281ac9SMark McLoughlin /* clone dgram socket */ 365c37f0bb1SMao Zhongyi newfd = net_socket_mcast_create(&saddr, NULL, errp); 36642281ac9SMark McLoughlin if (newfd < 0) { 367e5d1fca0SStefan Hajnoczi goto err; 36842281ac9SMark McLoughlin } 36942281ac9SMark McLoughlin /* clone newfd to fd, close newfd */ 37042281ac9SMark McLoughlin dup2(newfd, fd); 37142281ac9SMark McLoughlin close(newfd); 37242281ac9SMark McLoughlin 37342281ac9SMark McLoughlin } 37442281ac9SMark McLoughlin 375ab5f3f84SStefan Hajnoczi nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); 376564f63e3SMark McLoughlin 377564f63e3SMark McLoughlin s = DO_UPCAST(NetSocketState, nc, nc); 378564f63e3SMark McLoughlin 37942281ac9SMark McLoughlin s->fd = fd; 380011de2b5SZhi Yong Wu s->listen_fd = -1; 381863f678fSStefan Hajnoczi s->send_fn = net_socket_send_dgram; 3823cde5ea2SZhang Chen net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); 383863f678fSStefan Hajnoczi net_socket_read_poll(s, true); 38442281ac9SMark McLoughlin 38542281ac9SMark McLoughlin /* mcast: save bound address as dst */ 386bb160b57SJens Freimann if (is_connected && mcast != NULL) { 387e34cde35SZhi Yong Wu s->dgram_dst = saddr; 38853b85d95SLaurent Vivier qemu_set_info_str(nc, "socket: fd=%d (cloned mcast=%s:%d)", fd, 38953b85d95SLaurent Vivier inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); 3908db804acSGonglei } else { 391fdec16e3SMarc-André Lureau if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { 392fdec16e3SMarc-André Lureau s->dgram_dst.sin_family = AF_UNIX; 393fdec16e3SMarc-André Lureau } 394d89b4f83SJason Wang 39553b85d95SLaurent Vivier qemu_set_info_str(nc, "socket: fd=%d %s", fd, 39653b85d95SLaurent Vivier SocketAddressType_str(sa_type)); 397e34cde35SZhi Yong Wu } 39842281ac9SMark McLoughlin 39942281ac9SMark McLoughlin return s; 400e5d1fca0SStefan Hajnoczi 401e5d1fca0SStefan Hajnoczi err: 40225657fc6SMarc-André Lureau close(fd); 403e5d1fca0SStefan Hajnoczi return NULL; 40442281ac9SMark McLoughlin } 40542281ac9SMark McLoughlin 40642281ac9SMark McLoughlin static void net_socket_connect(void *opaque) 40742281ac9SMark McLoughlin { 40842281ac9SMark McLoughlin NetSocketState *s = opaque; 409863f678fSStefan Hajnoczi s->send_fn = net_socket_send; 410863f678fSStefan Hajnoczi net_socket_read_poll(s, true); 41142281ac9SMark McLoughlin } 41242281ac9SMark McLoughlin 413564f63e3SMark McLoughlin static NetClientInfo net_socket_info = { 414f394b2e2SEric Blake .type = NET_CLIENT_DRIVER_SOCKET, 415564f63e3SMark McLoughlin .size = sizeof(NetSocketState), 416564f63e3SMark McLoughlin .receive = net_socket_receive, 417564f63e3SMark McLoughlin .cleanup = net_socket_cleanup, 418564f63e3SMark McLoughlin }; 419564f63e3SMark McLoughlin 4204e68f7a0SStefan Hajnoczi static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, 42142281ac9SMark McLoughlin const char *model, 42242281ac9SMark McLoughlin const char *name, 42342281ac9SMark McLoughlin int fd, int is_connected) 42442281ac9SMark McLoughlin { 4254e68f7a0SStefan Hajnoczi NetClientState *nc; 42642281ac9SMark McLoughlin NetSocketState *s; 427564f63e3SMark McLoughlin 428ab5f3f84SStefan Hajnoczi nc = qemu_new_net_client(&net_socket_info, peer, model, name); 429564f63e3SMark McLoughlin 43053b85d95SLaurent Vivier qemu_set_info_str(nc, "socket: fd=%d", fd); 431d89b4f83SJason Wang 432564f63e3SMark McLoughlin s = DO_UPCAST(NetSocketState, nc, nc); 433564f63e3SMark McLoughlin 43442281ac9SMark McLoughlin s->fd = fd; 435011de2b5SZhi Yong Wu s->listen_fd = -1; 4363cde5ea2SZhang Chen net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); 437564f63e3SMark McLoughlin 43820048d0aSStefan Hajnoczi /* Disable Nagle algorithm on TCP sockets to reduce latency */ 43920048d0aSStefan Hajnoczi socket_set_nodelay(fd); 44020048d0aSStefan Hajnoczi 44142281ac9SMark McLoughlin if (is_connected) { 44242281ac9SMark McLoughlin net_socket_connect(s); 44342281ac9SMark McLoughlin } else { 44442281ac9SMark McLoughlin qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); 44542281ac9SMark McLoughlin } 44642281ac9SMark McLoughlin return s; 44742281ac9SMark McLoughlin } 44842281ac9SMark McLoughlin 44923455ae3SLaurent Vivier static int net_socket_fd_check(int fd, Error **errp) 45023455ae3SLaurent Vivier { 45123455ae3SLaurent Vivier int so_type, optlen = sizeof(so_type); 45223455ae3SLaurent Vivier 45323455ae3SLaurent Vivier if (getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, 45423455ae3SLaurent Vivier (socklen_t *)&optlen) < 0) { 45523455ae3SLaurent Vivier error_setg(errp, "can't get socket option SO_TYPE"); 45623455ae3SLaurent Vivier return -1; 45723455ae3SLaurent Vivier } 45823455ae3SLaurent Vivier if (so_type != SOCK_DGRAM && so_type != SOCK_STREAM) { 45923455ae3SLaurent Vivier error_setg(errp, "socket type=%d for fd=%d must be either" 46023455ae3SLaurent Vivier " SOCK_DGRAM or SOCK_STREAM", so_type, fd); 46123455ae3SLaurent Vivier return -1; 46223455ae3SLaurent Vivier } 46323455ae3SLaurent Vivier return so_type; 46423455ae3SLaurent Vivier } 46523455ae3SLaurent Vivier 4664e68f7a0SStefan Hajnoczi static NetSocketState *net_socket_fd_init(NetClientState *peer, 46742281ac9SMark McLoughlin const char *model, const char *name, 468c37f0bb1SMao Zhongyi int fd, int is_connected, 469c37f0bb1SMao Zhongyi const char *mc, Error **errp) 47042281ac9SMark McLoughlin { 47123455ae3SLaurent Vivier int so_type; 47242281ac9SMark McLoughlin 47323455ae3SLaurent Vivier so_type = net_socket_fd_check(fd, errp); 47423455ae3SLaurent Vivier if (so_type < 0) { 47525657fc6SMarc-André Lureau close(fd); 47642281ac9SMark McLoughlin return NULL; 47742281ac9SMark McLoughlin } 47842281ac9SMark McLoughlin switch(so_type) { 47942281ac9SMark McLoughlin case SOCK_DGRAM: 480c37f0bb1SMao Zhongyi return net_socket_fd_init_dgram(peer, model, name, fd, is_connected, 481c37f0bb1SMao Zhongyi mc, errp); 48242281ac9SMark McLoughlin case SOCK_STREAM: 483d33d93b2SStefan Hajnoczi return net_socket_fd_init_stream(peer, model, name, fd, is_connected); 48442281ac9SMark McLoughlin } 48542281ac9SMark McLoughlin return NULL; 48642281ac9SMark McLoughlin } 48742281ac9SMark McLoughlin 48842281ac9SMark McLoughlin static void net_socket_accept(void *opaque) 48942281ac9SMark McLoughlin { 490011de2b5SZhi Yong Wu NetSocketState *s = opaque; 49142281ac9SMark McLoughlin struct sockaddr_in saddr; 49242281ac9SMark McLoughlin socklen_t len; 49342281ac9SMark McLoughlin int fd; 49442281ac9SMark McLoughlin 49542281ac9SMark McLoughlin for(;;) { 49642281ac9SMark McLoughlin len = sizeof(saddr); 497011de2b5SZhi Yong Wu fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); 49842281ac9SMark McLoughlin if (fd < 0 && errno != EINTR) { 49942281ac9SMark McLoughlin return; 50042281ac9SMark McLoughlin } else if (fd >= 0) { 501011de2b5SZhi Yong Wu qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); 50242281ac9SMark McLoughlin break; 50342281ac9SMark McLoughlin } 50442281ac9SMark McLoughlin } 505011de2b5SZhi Yong Wu 506011de2b5SZhi Yong Wu s->fd = fd; 507011de2b5SZhi Yong Wu s->nc.link_down = false; 508011de2b5SZhi Yong Wu net_socket_connect(s); 50953b85d95SLaurent Vivier qemu_set_info_str(&s->nc, "socket: connection from %s:%d", 51056e6f594SJason Wang inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); 51142281ac9SMark McLoughlin } 51242281ac9SMark McLoughlin 5134e68f7a0SStefan Hajnoczi static int net_socket_listen_init(NetClientState *peer, 51442281ac9SMark McLoughlin const char *model, 51542281ac9SMark McLoughlin const char *name, 5160522a959SMao Zhongyi const char *host_str, 5170522a959SMao Zhongyi Error **errp) 51842281ac9SMark McLoughlin { 519011de2b5SZhi Yong Wu NetClientState *nc; 520011de2b5SZhi Yong Wu NetSocketState *s; 5216701e551SDaniel P. Berrange struct sockaddr_in saddr; 5226701e551SDaniel P. Berrange int fd, ret; 52342281ac9SMark McLoughlin 5240522a959SMao Zhongyi if (parse_host_port(&saddr, host_str, errp) < 0) { 5256701e551SDaniel P. Berrange return -1; 526bcd4dfd6SMao Zhongyi } 5276701e551SDaniel P. Berrange 5286701e551SDaniel P. Berrange fd = qemu_socket(PF_INET, SOCK_STREAM, 0); 5296701e551SDaniel P. Berrange if (fd < 0) { 5300522a959SMao Zhongyi error_setg_errno(errp, errno, "can't create stream socket"); 53142281ac9SMark McLoughlin return -1; 53242281ac9SMark McLoughlin } 533ff5927baSMarc-André Lureau qemu_socket_set_nonblock(fd); 53442281ac9SMark McLoughlin 5356701e551SDaniel P. Berrange socket_set_fast_reuse(fd); 5366701e551SDaniel P. Berrange 5376701e551SDaniel P. Berrange ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); 53842281ac9SMark McLoughlin if (ret < 0) { 5390522a959SMao Zhongyi error_setg_errno(errp, errno, "can't bind ip=%s to socket", 5400522a959SMao Zhongyi inet_ntoa(saddr.sin_addr)); 54125657fc6SMarc-André Lureau close(fd); 5426701e551SDaniel P. Berrange return -1; 5436701e551SDaniel P. Berrange } 5446701e551SDaniel P. Berrange ret = listen(fd, 0); 5456701e551SDaniel P. Berrange if (ret < 0) { 5460522a959SMao Zhongyi error_setg_errno(errp, errno, "can't listen on socket"); 54725657fc6SMarc-André Lureau close(fd); 54842281ac9SMark McLoughlin return -1; 54942281ac9SMark McLoughlin } 550011de2b5SZhi Yong Wu 551011de2b5SZhi Yong Wu nc = qemu_new_net_client(&net_socket_info, peer, model, name); 552011de2b5SZhi Yong Wu s = DO_UPCAST(NetSocketState, nc, nc); 553011de2b5SZhi Yong Wu s->fd = -1; 5546701e551SDaniel P. Berrange s->listen_fd = fd; 555011de2b5SZhi Yong Wu s->nc.link_down = true; 5563cde5ea2SZhang Chen net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); 557011de2b5SZhi Yong Wu 558011de2b5SZhi Yong Wu qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); 55942281ac9SMark McLoughlin return 0; 56042281ac9SMark McLoughlin } 56142281ac9SMark McLoughlin 5624e68f7a0SStefan Hajnoczi static int net_socket_connect_init(NetClientState *peer, 56342281ac9SMark McLoughlin const char *model, 56442281ac9SMark McLoughlin const char *name, 5650522a959SMao Zhongyi const char *host_str, 5660522a959SMao Zhongyi Error **errp) 56742281ac9SMark McLoughlin { 5686701e551SDaniel P. Berrange NetSocketState *s; 5696701e551SDaniel P. Berrange int fd, connected, ret; 5706701e551SDaniel P. Berrange struct sockaddr_in saddr; 57142281ac9SMark McLoughlin 5720522a959SMao Zhongyi if (parse_host_port(&saddr, host_str, errp) < 0) { 573883e4f76SMarc-André Lureau return -1; 574bcd4dfd6SMao Zhongyi } 5756701e551SDaniel P. Berrange 5766701e551SDaniel P. Berrange fd = qemu_socket(PF_INET, SOCK_STREAM, 0); 5776701e551SDaniel P. Berrange if (fd < 0) { 5780522a959SMao Zhongyi error_setg_errno(errp, errno, "can't create stream socket"); 5796701e551SDaniel P. Berrange return -1; 5806701e551SDaniel P. Berrange } 581ff5927baSMarc-André Lureau qemu_socket_set_nonblock(fd); 5826701e551SDaniel P. Berrange 5836701e551SDaniel P. Berrange connected = 0; 5846701e551SDaniel P. Berrange for(;;) { 5856701e551SDaniel P. Berrange ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); 5866701e551SDaniel P. Berrange if (ret < 0) { 5876701e551SDaniel P. Berrange if (errno == EINTR || errno == EWOULDBLOCK) { 5886701e551SDaniel P. Berrange /* continue */ 5896701e551SDaniel P. Berrange } else if (errno == EINPROGRESS || 590daf188ffSStefano Brivio errno == EALREADY) { 5916701e551SDaniel P. Berrange break; 5926701e551SDaniel P. Berrange } else { 5930522a959SMao Zhongyi error_setg_errno(errp, errno, "can't connect socket"); 59425657fc6SMarc-André Lureau close(fd); 5956701e551SDaniel P. Berrange return -1; 5966701e551SDaniel P. Berrange } 5976701e551SDaniel P. Berrange } else { 5986701e551SDaniel P. Berrange connected = 1; 5996701e551SDaniel P. Berrange break; 6006701e551SDaniel P. Berrange } 6016701e551SDaniel P. Berrange } 602006c3fa7SLaurent Vivier s = net_socket_fd_init_stream(peer, model, name, fd, connected); 603c37f0bb1SMao Zhongyi if (!s) { 6046701e551SDaniel P. Berrange return -1; 605c37f0bb1SMao Zhongyi } 606c37f0bb1SMao Zhongyi 60753b85d95SLaurent Vivier qemu_set_info_str(&s->nc, "socket: connect to %s:%d", 60856e6f594SJason Wang inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); 6096701e551SDaniel P. Berrange return 0; 61042281ac9SMark McLoughlin } 61142281ac9SMark McLoughlin 6124e68f7a0SStefan Hajnoczi static int net_socket_mcast_init(NetClientState *peer, 61342281ac9SMark McLoughlin const char *model, 61442281ac9SMark McLoughlin const char *name, 6153a75e74cSMike Ryan const char *host_str, 6160522a959SMao Zhongyi const char *localaddr_str, 6170522a959SMao Zhongyi Error **errp) 61842281ac9SMark McLoughlin { 61942281ac9SMark McLoughlin NetSocketState *s; 62042281ac9SMark McLoughlin int fd; 62142281ac9SMark McLoughlin struct sockaddr_in saddr; 6223a75e74cSMike Ryan struct in_addr localaddr, *param_localaddr; 62342281ac9SMark McLoughlin 6240522a959SMao Zhongyi if (parse_host_port(&saddr, host_str, errp) < 0) { 62542281ac9SMark McLoughlin return -1; 626bcd4dfd6SMao Zhongyi } 62742281ac9SMark McLoughlin 6283a75e74cSMike Ryan if (localaddr_str != NULL) { 6290522a959SMao Zhongyi if (inet_aton(localaddr_str, &localaddr) == 0) { 6300522a959SMao Zhongyi error_setg(errp, "localaddr '%s' is not a valid IPv4 address", 6310522a959SMao Zhongyi localaddr_str); 6323a75e74cSMike Ryan return -1; 6330522a959SMao Zhongyi } 6343a75e74cSMike Ryan param_localaddr = &localaddr; 6353a75e74cSMike Ryan } else { 6363a75e74cSMike Ryan param_localaddr = NULL; 6373a75e74cSMike Ryan } 63842281ac9SMark McLoughlin 6390522a959SMao Zhongyi fd = net_socket_mcast_create(&saddr, param_localaddr, errp); 640c37f0bb1SMao Zhongyi if (fd < 0) { 64142281ac9SMark McLoughlin return -1; 642c37f0bb1SMao Zhongyi } 64342281ac9SMark McLoughlin 644006c3fa7SLaurent Vivier s = net_socket_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); 645c37f0bb1SMao Zhongyi if (!s) { 64642281ac9SMark McLoughlin return -1; 647c37f0bb1SMao Zhongyi } 64842281ac9SMark McLoughlin 64942281ac9SMark McLoughlin s->dgram_dst = saddr; 65042281ac9SMark McLoughlin 65153b85d95SLaurent Vivier qemu_set_info_str(&s->nc, "socket: mcast=%s:%d", 65256e6f594SJason Wang inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); 65342281ac9SMark McLoughlin return 0; 654d89b4f83SJason Wang 65542281ac9SMark McLoughlin } 65642281ac9SMark McLoughlin 6574e68f7a0SStefan Hajnoczi static int net_socket_udp_init(NetClientState *peer, 6580e0e7facSBenjamin const char *model, 6590e0e7facSBenjamin const char *name, 6600e0e7facSBenjamin const char *rhost, 6610522a959SMao Zhongyi const char *lhost, 6620522a959SMao Zhongyi Error **errp) 6630e0e7facSBenjamin { 6640e0e7facSBenjamin NetSocketState *s; 665bcbe92fbSSebastian Ottlik int fd, ret; 6660e0e7facSBenjamin struct sockaddr_in laddr, raddr; 6670e0e7facSBenjamin 6680522a959SMao Zhongyi if (parse_host_port(&laddr, lhost, errp) < 0) { 6690e0e7facSBenjamin return -1; 6700e0e7facSBenjamin } 6710e0e7facSBenjamin 6720522a959SMao Zhongyi if (parse_host_port(&raddr, rhost, errp) < 0) { 6730e0e7facSBenjamin return -1; 6740e0e7facSBenjamin } 6750e0e7facSBenjamin 6760e0e7facSBenjamin fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); 6770e0e7facSBenjamin if (fd < 0) { 6780522a959SMao Zhongyi error_setg_errno(errp, errno, "can't create datagram socket"); 6790e0e7facSBenjamin return -1; 6800e0e7facSBenjamin } 681bcbe92fbSSebastian Ottlik 682bcbe92fbSSebastian Ottlik ret = socket_set_fast_reuse(fd); 6830e0e7facSBenjamin if (ret < 0) { 6840522a959SMao Zhongyi error_setg_errno(errp, errno, 6850522a959SMao Zhongyi "can't set socket option SO_REUSEADDR"); 68625657fc6SMarc-André Lureau close(fd); 6870e0e7facSBenjamin return -1; 6880e0e7facSBenjamin } 6890e0e7facSBenjamin ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); 6900e0e7facSBenjamin if (ret < 0) { 6910522a959SMao Zhongyi error_setg_errno(errp, errno, "can't bind ip=%s to socket", 6920522a959SMao Zhongyi inet_ntoa(laddr.sin_addr)); 69325657fc6SMarc-André Lureau close(fd); 6940e0e7facSBenjamin return -1; 6950e0e7facSBenjamin } 696ff5927baSMarc-André Lureau qemu_socket_set_nonblock(fd); 6970e0e7facSBenjamin 698006c3fa7SLaurent Vivier s = net_socket_fd_init_dgram(peer, model, name, fd, 0, NULL, errp); 6990e0e7facSBenjamin if (!s) { 7000e0e7facSBenjamin return -1; 7010e0e7facSBenjamin } 7020e0e7facSBenjamin 7030e0e7facSBenjamin s->dgram_dst = raddr; 7040e0e7facSBenjamin 70553b85d95SLaurent Vivier qemu_set_info_str(&s->nc, "socket: udp=%s:%d", inet_ntoa(raddr.sin_addr), 70653b85d95SLaurent Vivier ntohs(raddr.sin_port)); 7070e0e7facSBenjamin return 0; 7080e0e7facSBenjamin } 7090e0e7facSBenjamin 710cebea510SKővágó, Zoltán int net_init_socket(const Netdev *netdev, const char *name, 711a30ecde6SMarkus Armbruster NetClientState *peer, Error **errp) 71242281ac9SMark McLoughlin { 713bef8e8feSLaszlo Ersek const NetdevSocketOptions *sock; 714bef8e8feSLaszlo Ersek 715f394b2e2SEric Blake assert(netdev->type == NET_CLIENT_DRIVER_SOCKET); 716f394b2e2SEric Blake sock = &netdev->u.socket; 717bef8e8feSLaszlo Ersek 7187480874aSMarkus Armbruster if (!!sock->fd + !!sock->listen + !!sock->connect + !!sock->mcast + 7197480874aSMarkus Armbruster !!sock->udp != 1) { 7200522a959SMao Zhongyi error_setg(errp, "exactly one of listen=, connect=, mcast= or udp=" 721bef8e8feSLaszlo Ersek " is required"); 722bef8e8feSLaszlo Ersek return -1; 723bef8e8feSLaszlo Ersek } 724bef8e8feSLaszlo Ersek 7257480874aSMarkus Armbruster if (sock->localaddr && !sock->mcast && !sock->udp) { 7260522a959SMao Zhongyi error_setg(errp, "localaddr= is only valid with mcast= or udp="); 727bef8e8feSLaszlo Ersek return -1; 728bef8e8feSLaszlo Ersek } 729bef8e8feSLaszlo Ersek 7307480874aSMarkus Armbruster if (sock->fd) { 731894022e6SLaurent Vivier int fd, ret; 73242281ac9SMark McLoughlin 733947e4744SKevin Wolf fd = monitor_fd_param(monitor_cur(), sock->fd, errp); 734fc13fa00SStefan Hajnoczi if (fd == -1) { 735fc13fa00SStefan Hajnoczi return -1; 736fc13fa00SStefan Hajnoczi } 737ff5927baSMarc-André Lureau ret = qemu_socket_try_set_nonblock(fd); 738894022e6SLaurent Vivier if (ret < 0) { 739894022e6SLaurent Vivier error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", 740894022e6SLaurent Vivier name, fd); 741894022e6SLaurent Vivier return -1; 742894022e6SLaurent Vivier } 743c37f0bb1SMao Zhongyi if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast, 744c37f0bb1SMao Zhongyi errp)) { 74542281ac9SMark McLoughlin return -1; 74642281ac9SMark McLoughlin } 747bef8e8feSLaszlo Ersek return 0; 74842281ac9SMark McLoughlin } 74942281ac9SMark McLoughlin 7507480874aSMarkus Armbruster if (sock->listen) { 7510522a959SMao Zhongyi if (net_socket_listen_init(peer, "socket", name, sock->listen, errp) 7520522a959SMao Zhongyi < 0) { 75342281ac9SMark McLoughlin return -1; 75442281ac9SMark McLoughlin } 755bef8e8feSLaszlo Ersek return 0; 75642281ac9SMark McLoughlin } 75742281ac9SMark McLoughlin 7587480874aSMarkus Armbruster if (sock->connect) { 7590522a959SMao Zhongyi if (net_socket_connect_init(peer, "socket", name, sock->connect, errp) 7600522a959SMao Zhongyi < 0) { 76142281ac9SMark McLoughlin return -1; 76242281ac9SMark McLoughlin } 763bef8e8feSLaszlo Ersek return 0; 76442281ac9SMark McLoughlin } 76542281ac9SMark McLoughlin 7667480874aSMarkus Armbruster if (sock->mcast) { 767bef8e8feSLaszlo Ersek /* if sock->localaddr is missing, it has been initialized to "all bits 768bef8e8feSLaszlo Ersek * zero" */ 769d33d93b2SStefan Hajnoczi if (net_socket_mcast_init(peer, "socket", name, sock->mcast, 7700522a959SMao Zhongyi sock->localaddr, errp) < 0) { 77142281ac9SMark McLoughlin return -1; 77242281ac9SMark McLoughlin } 773bef8e8feSLaszlo Ersek return 0; 77442281ac9SMark McLoughlin } 77542281ac9SMark McLoughlin 7767480874aSMarkus Armbruster assert(sock->udp); 7777480874aSMarkus Armbruster if (!sock->localaddr) { 7780522a959SMao Zhongyi error_setg(errp, "localaddr= is mandatory with udp="); 7790e0e7facSBenjamin return -1; 7800e0e7facSBenjamin } 7810522a959SMao Zhongyi if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr, 7820522a959SMao Zhongyi errp) < 0) { 7830e0e7facSBenjamin return -1; 7840e0e7facSBenjamin } 78542281ac9SMark McLoughlin return 0; 78642281ac9SMark McLoughlin } 787