Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 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 | */ |
Peter Maydell | 2744d92 | 2016-01-29 17:50:00 +0000 | [diff] [blame] | 24 | #include "qemu/osdep.h" |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 25 | |
Paolo Bonzini | 1422e32 | 2012-10-24 08:43:34 +0200 | [diff] [blame] | 26 | #include "net/net.h" |
Paolo Bonzini | a245fc1 | 2012-09-17 18:43:51 +0200 | [diff] [blame] | 27 | #include "clients.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 28 | #include "monitor/monitor.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 29 | #include "qapi/error.h" |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 30 | #include "qemu-common.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 31 | #include "qemu/error-report.h" |
| 32 | #include "qemu/option.h" |
| 33 | #include "qemu/sockets.h" |
| 34 | #include "qemu/iov.h" |
Alex Bligh | 6a1751b | 2013-08-21 16:02:47 +0100 | [diff] [blame] | 35 | #include "qemu/main-loop.h" |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 36 | |
| 37 | typedef struct NetSocketState { |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 38 | NetClientState nc; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 39 | int listen_fd; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 40 | int fd; |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 41 | SocketReadState rs; |
Stefan Hajnoczi | 45a7f54 | 2012-08-20 10:14:35 +0100 | [diff] [blame] | 42 | unsigned int send_index; /* number of bytes sent (only SOCK_STREAM) */ |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 43 | struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 44 | IOHandler *send_fn; /* differs between SOCK_STREAM/SOCK_DGRAM */ |
| 45 | bool read_poll; /* waiting to receive data? */ |
| 46 | bool write_poll; /* waiting to transmit data? */ |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 47 | } NetSocketState; |
| 48 | |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 49 | static void net_socket_accept(void *opaque); |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 50 | static void net_socket_writable(void *opaque); |
| 51 | |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 52 | static void net_socket_update_fd_handler(NetSocketState *s) |
| 53 | { |
Fam Zheng | 82e1cc4 | 2015-06-04 14:45:18 +0800 | [diff] [blame] | 54 | qemu_set_fd_handler(s->fd, |
| 55 | s->read_poll ? s->send_fn : NULL, |
| 56 | s->write_poll ? net_socket_writable : NULL, |
| 57 | s); |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | static void net_socket_read_poll(NetSocketState *s, bool enable) |
| 61 | { |
| 62 | s->read_poll = enable; |
| 63 | net_socket_update_fd_handler(s); |
| 64 | } |
| 65 | |
| 66 | static void net_socket_write_poll(NetSocketState *s, bool enable) |
| 67 | { |
| 68 | s->write_poll = enable; |
| 69 | net_socket_update_fd_handler(s); |
| 70 | } |
| 71 | |
| 72 | static void net_socket_writable(void *opaque) |
| 73 | { |
| 74 | NetSocketState *s = opaque; |
| 75 | |
| 76 | net_socket_write_poll(s, false); |
| 77 | |
| 78 | qemu_flush_queued_packets(&s->nc); |
| 79 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 80 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 81 | static ssize_t net_socket_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 82 | { |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 83 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
Stefan Hajnoczi | 45a7f54 | 2012-08-20 10:14:35 +0100 | [diff] [blame] | 84 | uint32_t len = htonl(size); |
| 85 | struct iovec iov[] = { |
| 86 | { |
| 87 | .iov_base = &len, |
| 88 | .iov_len = sizeof(len), |
| 89 | }, { |
| 90 | .iov_base = (void *)buf, |
| 91 | .iov_len = size, |
| 92 | }, |
| 93 | }; |
| 94 | size_t remaining; |
| 95 | ssize_t ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 96 | |
Stefan Hajnoczi | 45a7f54 | 2012-08-20 10:14:35 +0100 | [diff] [blame] | 97 | remaining = iov_size(iov, 2) - s->send_index; |
| 98 | ret = iov_send(s->fd, iov, 2, s->send_index, remaining); |
| 99 | |
| 100 | if (ret == -1 && errno == EAGAIN) { |
| 101 | ret = 0; /* handled further down */ |
| 102 | } |
| 103 | if (ret == -1) { |
| 104 | s->send_index = 0; |
| 105 | return -errno; |
| 106 | } |
| 107 | if (ret < (ssize_t)remaining) { |
| 108 | s->send_index += ret; |
| 109 | net_socket_write_poll(s, true); |
| 110 | return 0; |
| 111 | } |
| 112 | s->send_index = 0; |
| 113 | return size; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 114 | } |
| 115 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 116 | static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf, size_t size) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 117 | { |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 118 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
Stefan Hajnoczi | 213fd50 | 2012-08-20 10:28:53 +0100 | [diff] [blame] | 119 | ssize_t ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 120 | |
Stefan Hajnoczi | 213fd50 | 2012-08-20 10:28:53 +0100 | [diff] [blame] | 121 | do { |
Marc-André Lureau | fdec16e | 2019-03-11 18:25:05 +0100 | [diff] [blame] | 122 | if (s->dgram_dst.sin_family != AF_UNIX) { |
| 123 | ret = qemu_sendto(s->fd, buf, size, 0, |
| 124 | (struct sockaddr *)&s->dgram_dst, |
| 125 | sizeof(s->dgram_dst)); |
| 126 | } else { |
| 127 | ret = send(s->fd, buf, size, 0); |
| 128 | } |
Stefan Hajnoczi | 213fd50 | 2012-08-20 10:28:53 +0100 | [diff] [blame] | 129 | } while (ret == -1 && errno == EINTR); |
| 130 | |
| 131 | if (ret == -1 && errno == EAGAIN) { |
| 132 | net_socket_write_poll(s, true); |
| 133 | return 0; |
| 134 | } |
| 135 | return ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 136 | } |
| 137 | |
Fam Zheng | 6e99c63 | 2015-06-04 14:45:16 +0800 | [diff] [blame] | 138 | static void net_socket_send_completed(NetClientState *nc, ssize_t len) |
| 139 | { |
| 140 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
| 141 | |
| 142 | if (!s->read_poll) { |
| 143 | net_socket_read_poll(s, true); |
| 144 | } |
| 145 | } |
| 146 | |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 147 | static void net_socket_rs_finalize(SocketReadState *rs) |
| 148 | { |
| 149 | NetSocketState *s = container_of(rs, NetSocketState, rs); |
| 150 | |
| 151 | if (qemu_send_packet_async(&s->nc, rs->buf, |
| 152 | rs->packet_len, |
| 153 | net_socket_send_completed) == 0) { |
| 154 | net_socket_read_poll(s, false); |
| 155 | } |
| 156 | } |
| 157 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 158 | static void net_socket_send(void *opaque) |
| 159 | { |
| 160 | NetSocketState *s = opaque; |
Daniel P. Berrange | b16a44e | 2016-03-07 20:36:03 +0000 | [diff] [blame] | 161 | int size; |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 162 | int ret; |
Scott Feldman | d32fcad | 2013-03-18 11:43:44 -0700 | [diff] [blame] | 163 | uint8_t buf1[NET_BUFSIZE]; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 164 | const uint8_t *buf; |
| 165 | |
Blue Swirl | 00aa004 | 2011-07-23 20:04:29 +0000 | [diff] [blame] | 166 | size = qemu_recv(s->fd, buf1, sizeof(buf1), 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 167 | if (size < 0) { |
Daniel P. Berrange | b16a44e | 2016-03-07 20:36:03 +0000 | [diff] [blame] | 168 | if (errno != EWOULDBLOCK) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 169 | goto eoc; |
| 170 | } else if (size == 0) { |
| 171 | /* end of connection */ |
| 172 | eoc: |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 173 | net_socket_read_poll(s, false); |
| 174 | net_socket_write_poll(s, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 175 | if (s->listen_fd != -1) { |
| 176 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); |
| 177 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 178 | closesocket(s->fd); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 179 | |
| 180 | s->fd = -1; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 181 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 182 | s->nc.link_down = true; |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 183 | memset(s->nc.info_str, 0, sizeof(s->nc.info_str)); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 184 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 185 | return; |
| 186 | } |
| 187 | buf = buf1; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 188 | |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 189 | ret = net_fill_rstate(&s->rs, buf, size); |
| 190 | |
| 191 | if (ret == -1) { |
| 192 | goto eoc; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 193 | } |
| 194 | } |
| 195 | |
| 196 | static void net_socket_send_dgram(void *opaque) |
| 197 | { |
| 198 | NetSocketState *s = opaque; |
| 199 | int size; |
| 200 | |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 201 | size = qemu_recv(s->fd, s->rs.buf, sizeof(s->rs.buf), 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 202 | if (size < 0) |
| 203 | return; |
| 204 | if (size == 0) { |
| 205 | /* end of connection */ |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 206 | net_socket_read_poll(s, false); |
| 207 | net_socket_write_poll(s, false); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 208 | return; |
| 209 | } |
Zhang Chen | 16a3df4 | 2016-05-13 15:35:19 +0800 | [diff] [blame] | 210 | if (qemu_send_packet_async(&s->nc, s->rs.buf, size, |
Fam Zheng | 6e99c63 | 2015-06-04 14:45:16 +0800 | [diff] [blame] | 211 | net_socket_send_completed) == 0) { |
| 212 | net_socket_read_poll(s, false); |
| 213 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 216 | static int net_socket_mcast_create(struct sockaddr_in *mcastaddr, |
| 217 | struct in_addr *localaddr, |
| 218 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 219 | { |
| 220 | struct ip_mreq imr; |
| 221 | int fd; |
| 222 | int val, ret; |
Brad | 23ddf2b | 2011-08-07 11:06:43 +0000 | [diff] [blame] | 223 | #ifdef __OpenBSD__ |
| 224 | unsigned char loop; |
| 225 | #else |
| 226 | int loop; |
| 227 | #endif |
| 228 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 229 | if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 230 | error_setg(errp, "specified mcastaddr %s (0x%08x) " |
| 231 | "does not contain a multicast address", |
| 232 | inet_ntoa(mcastaddr->sin_addr), |
| 233 | (int)ntohl(mcastaddr->sin_addr.s_addr)); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 234 | return -1; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 235 | } |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 236 | |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 237 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 238 | if (fd < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 239 | error_setg_errno(errp, errno, "can't create datagram socket"); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 240 | return -1; |
| 241 | } |
| 242 | |
Sebastian Ottlik | bcbe92f | 2013-10-02 12:23:14 +0200 | [diff] [blame] | 243 | /* Allow multiple sockets to bind the same multicast ip and port by setting |
| 244 | * SO_REUSEADDR. This is the only situation where SO_REUSEADDR should be set |
| 245 | * on windows. Use socket_set_fast_reuse otherwise as it sets SO_REUSEADDR |
| 246 | * only on posix systems. |
| 247 | */ |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 248 | val = 1; |
Stefan Weil | 9957fc7 | 2013-03-08 19:58:32 +0100 | [diff] [blame] | 249 | ret = qemu_setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 250 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 251 | error_setg_errno(errp, errno, |
| 252 | "can't set socket option SO_REUSEADDR"); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 253 | goto fail; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
| 257 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 258 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
| 259 | inet_ntoa(mcastaddr->sin_addr)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 260 | goto fail; |
| 261 | } |
| 262 | |
| 263 | /* Add host to multicast group */ |
| 264 | imr.imr_multiaddr = mcastaddr->sin_addr; |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 265 | if (localaddr) { |
| 266 | imr.imr_interface = *localaddr; |
| 267 | } else { |
| 268 | imr.imr_interface.s_addr = htonl(INADDR_ANY); |
| 269 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 270 | |
Stefan Weil | 9957fc7 | 2013-03-08 19:58:32 +0100 | [diff] [blame] | 271 | ret = qemu_setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
| 272 | &imr, sizeof(struct ip_mreq)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 273 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 274 | error_setg_errno(errp, errno, |
| 275 | "can't add socket to multicast group %s", |
| 276 | inet_ntoa(imr.imr_multiaddr)); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 277 | goto fail; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | /* Force mcast msgs to loopback (eg. several QEMUs in same host */ |
Brad | 23ddf2b | 2011-08-07 11:06:43 +0000 | [diff] [blame] | 281 | loop = 1; |
Stefan Weil | 9957fc7 | 2013-03-08 19:58:32 +0100 | [diff] [blame] | 282 | ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
| 283 | &loop, sizeof(loop)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 284 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 285 | error_setg_errno(errp, errno, |
| 286 | "can't force multicast message to loopback"); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 287 | goto fail; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 288 | } |
| 289 | |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 290 | /* If a bind address is given, only send packets from that address */ |
| 291 | if (localaddr != NULL) { |
Stefan Weil | 9957fc7 | 2013-03-08 19:58:32 +0100 | [diff] [blame] | 292 | ret = qemu_setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, |
| 293 | localaddr, sizeof(*localaddr)); |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 294 | if (ret < 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 295 | error_setg_errno(errp, errno, |
| 296 | "can't set the default network send interface"); |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 297 | goto fail; |
| 298 | } |
| 299 | } |
| 300 | |
Stefan Hajnoczi | f9e8cac | 2013-03-27 10:10:43 +0100 | [diff] [blame] | 301 | qemu_set_nonblock(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 302 | return fd; |
| 303 | fail: |
| 304 | if (fd >= 0) |
| 305 | closesocket(fd); |
| 306 | return -1; |
| 307 | } |
| 308 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 309 | static void net_socket_cleanup(NetClientState *nc) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 310 | { |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 311 | NetSocketState *s = DO_UPCAST(NetSocketState, nc, nc); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 312 | if (s->fd != -1) { |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 313 | net_socket_read_poll(s, false); |
| 314 | net_socket_write_poll(s, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 315 | close(s->fd); |
| 316 | s->fd = -1; |
| 317 | } |
| 318 | if (s->listen_fd != -1) { |
| 319 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); |
| 320 | closesocket(s->listen_fd); |
| 321 | s->listen_fd = -1; |
| 322 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 323 | } |
| 324 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 325 | static NetClientInfo net_dgram_socket_info = { |
Eric Blake | f394b2e | 2016-07-13 21:50:23 -0600 | [diff] [blame] | 326 | .type = NET_CLIENT_DRIVER_SOCKET, |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 327 | .size = sizeof(NetSocketState), |
| 328 | .receive = net_socket_receive_dgram, |
| 329 | .cleanup = net_socket_cleanup, |
| 330 | }; |
| 331 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 332 | static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 333 | const char *model, |
| 334 | const char *name, |
Jens Freimann | 0f8c289 | 2017-08-08 22:38:57 +0200 | [diff] [blame] | 335 | int fd, int is_connected, |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 336 | const char *mcast, |
| 337 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 338 | { |
| 339 | struct sockaddr_in saddr; |
| 340 | int newfd; |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 341 | NetClientState *nc; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 342 | NetSocketState *s; |
Marc-André Lureau | fdec16e | 2019-03-11 18:25:05 +0100 | [diff] [blame] | 343 | SocketAddress *sa; |
| 344 | SocketAddressType sa_type; |
| 345 | |
| 346 | sa = socket_local_address(fd, errp); |
| 347 | if (!sa) { |
| 348 | return NULL; |
| 349 | } |
| 350 | sa_type = sa->type; |
| 351 | qapi_free_SocketAddress(sa); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 352 | |
| 353 | /* fd passed: multicast: "learn" dgram_dst address from bound address and save it |
| 354 | * Because this may be "shared" socket from a "master" process, datagrams would be recv() |
| 355 | * by ONLY ONE process: we must "clone" this dgram socket --jjo |
| 356 | */ |
| 357 | |
Jens Freimann | 0f8c289 | 2017-08-08 22:38:57 +0200 | [diff] [blame] | 358 | if (is_connected && mcast != NULL) { |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 359 | if (parse_host_port(&saddr, mcast, errp) < 0) { |
Jens Freimann | 0f8c289 | 2017-08-08 22:38:57 +0200 | [diff] [blame] | 360 | goto err; |
| 361 | } |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 362 | /* must be bound */ |
| 363 | if (saddr.sin_addr.s_addr == 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 364 | error_setg(errp, "can't setup multicast destination address"); |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 365 | goto err; |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 366 | } |
| 367 | /* clone dgram socket */ |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 368 | newfd = net_socket_mcast_create(&saddr, NULL, errp); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 369 | if (newfd < 0) { |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 370 | goto err; |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 371 | } |
| 372 | /* clone newfd to fd, close newfd */ |
| 373 | dup2(newfd, fd); |
| 374 | close(newfd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 375 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 376 | } |
| 377 | |
Stefan Hajnoczi | ab5f3f8 | 2012-07-24 16:35:08 +0100 | [diff] [blame] | 378 | nc = qemu_new_net_client(&net_dgram_socket_info, peer, model, name); |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 379 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 380 | s = DO_UPCAST(NetSocketState, nc, nc); |
| 381 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 382 | s->fd = fd; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 383 | s->listen_fd = -1; |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 384 | s->send_fn = net_socket_send_dgram; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 385 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 386 | net_socket_read_poll(s, true); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 387 | |
| 388 | /* mcast: save bound address as dst */ |
Jens Freimann | bb160b5 | 2017-11-06 15:05:46 +0100 | [diff] [blame] | 389 | if (is_connected && mcast != NULL) { |
Zhi Yong Wu | e34cde3 | 2012-07-20 14:25:52 +0100 | [diff] [blame] | 390 | s->dgram_dst = saddr; |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 391 | snprintf(nc->info_str, sizeof(nc->info_str), |
| 392 | "socket: fd=%d (cloned mcast=%s:%d)", |
| 393 | fd, inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Gonglei | 8db804a | 2014-11-20 19:35:01 +0800 | [diff] [blame] | 394 | } else { |
Marc-André Lureau | fdec16e | 2019-03-11 18:25:05 +0100 | [diff] [blame] | 395 | if (sa_type == SOCKET_ADDRESS_TYPE_UNIX) { |
| 396 | s->dgram_dst.sin_family = AF_UNIX; |
| 397 | } |
Jason Wang | d89b4f8 | 2021-04-02 11:03:12 +0800 | [diff] [blame] | 398 | |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 399 | snprintf(nc->info_str, sizeof(nc->info_str), |
| 400 | "socket: fd=%d %s", fd, SocketAddressType_str(sa_type)); |
Zhi Yong Wu | e34cde3 | 2012-07-20 14:25:52 +0100 | [diff] [blame] | 401 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 402 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 403 | return s; |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 404 | |
| 405 | err: |
| 406 | closesocket(fd); |
| 407 | return NULL; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | static void net_socket_connect(void *opaque) |
| 411 | { |
| 412 | NetSocketState *s = opaque; |
Stefan Hajnoczi | 863f678 | 2012-08-20 10:21:54 +0100 | [diff] [blame] | 413 | s->send_fn = net_socket_send; |
| 414 | net_socket_read_poll(s, true); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 415 | } |
| 416 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 417 | static NetClientInfo net_socket_info = { |
Eric Blake | f394b2e | 2016-07-13 21:50:23 -0600 | [diff] [blame] | 418 | .type = NET_CLIENT_DRIVER_SOCKET, |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 419 | .size = sizeof(NetSocketState), |
| 420 | .receive = net_socket_receive, |
| 421 | .cleanup = net_socket_cleanup, |
| 422 | }; |
| 423 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 424 | static NetSocketState *net_socket_fd_init_stream(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 425 | const char *model, |
| 426 | const char *name, |
| 427 | int fd, int is_connected) |
| 428 | { |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 429 | NetClientState *nc; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 430 | NetSocketState *s; |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 431 | |
Stefan Hajnoczi | ab5f3f8 | 2012-07-24 16:35:08 +0100 | [diff] [blame] | 432 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 433 | |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 434 | snprintf(nc->info_str, sizeof(nc->info_str), "socket: fd=%d", fd); |
Jason Wang | d89b4f8 | 2021-04-02 11:03:12 +0800 | [diff] [blame] | 435 | |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 436 | s = DO_UPCAST(NetSocketState, nc, nc); |
| 437 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 438 | s->fd = fd; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 439 | s->listen_fd = -1; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 440 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Mark McLoughlin | 564f63e | 2009-11-25 18:49:08 +0000 | [diff] [blame] | 441 | |
Stefan Hajnoczi | 20048d0 | 2013-02-27 15:05:47 +0100 | [diff] [blame] | 442 | /* Disable Nagle algorithm on TCP sockets to reduce latency */ |
| 443 | socket_set_nodelay(fd); |
| 444 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 445 | if (is_connected) { |
| 446 | net_socket_connect(s); |
| 447 | } else { |
| 448 | qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); |
| 449 | } |
| 450 | return s; |
| 451 | } |
| 452 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 453 | static NetSocketState *net_socket_fd_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 454 | const char *model, const char *name, |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 455 | int fd, int is_connected, |
| 456 | const char *mc, Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 457 | { |
| 458 | int so_type = -1, optlen=sizeof(so_type); |
| 459 | |
| 460 | if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
| 461 | (socklen_t *)&optlen)< 0) { |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 462 | error_setg(errp, "can't get socket option SO_TYPE"); |
Stefan Hajnoczi | e5d1fca | 2011-12-07 15:01:49 +0000 | [diff] [blame] | 463 | closesocket(fd); |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 464 | return NULL; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 465 | } |
| 466 | switch(so_type) { |
| 467 | case SOCK_DGRAM: |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 468 | return net_socket_fd_init_dgram(peer, model, name, fd, is_connected, |
| 469 | mc, errp); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 470 | case SOCK_STREAM: |
Stefan Hajnoczi | d33d93b | 2012-07-24 16:35:05 +0100 | [diff] [blame] | 471 | return net_socket_fd_init_stream(peer, model, name, fd, is_connected); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 472 | default: |
Markus Armbruster | 8c42dbe | 2018-10-17 10:26:38 +0200 | [diff] [blame] | 473 | error_setg(errp, "socket type=%d for fd=%d must be either" |
| 474 | " SOCK_DGRAM or SOCK_STREAM", so_type, fd); |
Mao Zhongyi | e1b24b6 | 2017-09-04 22:35:37 +0800 | [diff] [blame] | 475 | closesocket(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 476 | } |
| 477 | return NULL; |
| 478 | } |
| 479 | |
| 480 | static void net_socket_accept(void *opaque) |
| 481 | { |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 482 | NetSocketState *s = opaque; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 483 | struct sockaddr_in saddr; |
| 484 | socklen_t len; |
| 485 | int fd; |
| 486 | |
| 487 | for(;;) { |
| 488 | len = sizeof(saddr); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 489 | fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 490 | if (fd < 0 && errno != EINTR) { |
| 491 | return; |
| 492 | } else if (fd >= 0) { |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 493 | qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 494 | break; |
| 495 | } |
| 496 | } |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 497 | |
| 498 | s->fd = fd; |
| 499 | s->nc.link_down = false; |
| 500 | net_socket_connect(s); |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 501 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), |
| 502 | "socket: connection from %s:%d", |
| 503 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 504 | } |
| 505 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 506 | static int net_socket_listen_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 507 | const char *model, |
| 508 | const char *name, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 509 | const char *host_str, |
| 510 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 511 | { |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 512 | NetClientState *nc; |
| 513 | NetSocketState *s; |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 514 | struct sockaddr_in saddr; |
| 515 | int fd, ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 516 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 517 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 518 | return -1; |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 519 | } |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 520 | |
| 521 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
| 522 | if (fd < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 523 | error_setg_errno(errp, errno, "can't create stream socket"); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 524 | return -1; |
| 525 | } |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 526 | qemu_set_nonblock(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 527 | |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 528 | socket_set_fast_reuse(fd); |
| 529 | |
| 530 | ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 531 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 532 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
| 533 | inet_ntoa(saddr.sin_addr)); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 534 | closesocket(fd); |
| 535 | return -1; |
| 536 | } |
| 537 | ret = listen(fd, 0); |
| 538 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 539 | error_setg_errno(errp, errno, "can't listen on socket"); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 540 | closesocket(fd); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 541 | return -1; |
| 542 | } |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 543 | |
| 544 | nc = qemu_new_net_client(&net_socket_info, peer, model, name); |
| 545 | s = DO_UPCAST(NetSocketState, nc, nc); |
| 546 | s->fd = -1; |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 547 | s->listen_fd = fd; |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 548 | s->nc.link_down = true; |
Zhang Chen | 3cde5ea | 2017-07-04 14:53:46 +0800 | [diff] [blame] | 549 | net_socket_rs_init(&s->rs, net_socket_rs_finalize, false); |
Zhi Yong Wu | 011de2b | 2012-07-20 14:25:53 +0100 | [diff] [blame] | 550 | |
| 551 | qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 552 | return 0; |
| 553 | } |
| 554 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 555 | static int net_socket_connect_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 556 | const char *model, |
| 557 | const char *name, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 558 | const char *host_str, |
| 559 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 560 | { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 561 | NetSocketState *s; |
| 562 | int fd, connected, ret; |
| 563 | struct sockaddr_in saddr; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 564 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 565 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 566 | return -1; |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 567 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 568 | |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 569 | fd = qemu_socket(PF_INET, SOCK_STREAM, 0); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 570 | if (fd < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 571 | error_setg_errno(errp, errno, "can't create stream socket"); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 572 | return -1; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 573 | } |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 574 | qemu_set_nonblock(fd); |
Paolo Bonzini | 6160183 | 2016-08-30 14:04:12 +0200 | [diff] [blame] | 575 | |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 576 | connected = 0; |
| 577 | for(;;) { |
| 578 | ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
| 579 | if (ret < 0) { |
| 580 | if (errno == EINTR || errno == EWOULDBLOCK) { |
| 581 | /* continue */ |
| 582 | } else if (errno == EINPROGRESS || |
| 583 | errno == EALREADY || |
| 584 | errno == EINVAL) { |
| 585 | break; |
| 586 | } else { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 587 | error_setg_errno(errp, errno, "can't connect socket"); |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 588 | closesocket(fd); |
| 589 | return -1; |
| 590 | } |
| 591 | } else { |
| 592 | connected = 1; |
| 593 | break; |
| 594 | } |
| 595 | } |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 596 | s = net_socket_fd_init(peer, model, name, fd, connected, NULL, errp); |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 597 | if (!s) { |
Daniel P. Berrange | 6701e55 | 2017-05-05 17:23:05 +0100 | [diff] [blame] | 598 | return -1; |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 599 | } |
| 600 | |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 601 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), |
| 602 | "socket: connect to %s:%d", |
| 603 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 604 | return 0; |
| 605 | } |
| 606 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 607 | static int net_socket_mcast_init(NetClientState *peer, |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 608 | const char *model, |
| 609 | const char *name, |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 610 | const char *host_str, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 611 | const char *localaddr_str, |
| 612 | Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 613 | { |
| 614 | NetSocketState *s; |
| 615 | int fd; |
| 616 | struct sockaddr_in saddr; |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 617 | struct in_addr localaddr, *param_localaddr; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 618 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 619 | if (parse_host_port(&saddr, host_str, errp) < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 620 | return -1; |
Mao Zhongyi | bcd4dfd | 2017-09-04 22:35:39 +0800 | [diff] [blame] | 621 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 622 | |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 623 | if (localaddr_str != NULL) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 624 | if (inet_aton(localaddr_str, &localaddr) == 0) { |
| 625 | error_setg(errp, "localaddr '%s' is not a valid IPv4 address", |
| 626 | localaddr_str); |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 627 | return -1; |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 628 | } |
Mike Ryan | 3a75e74 | 2010-12-01 11:16:47 -0800 | [diff] [blame] | 629 | param_localaddr = &localaddr; |
| 630 | } else { |
| 631 | param_localaddr = NULL; |
| 632 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 633 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 634 | fd = net_socket_mcast_create(&saddr, param_localaddr, errp); |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 635 | if (fd < 0) { |
Stefan Hajnoczi | 842480d | 2011-12-07 15:01:48 +0000 | [diff] [blame] | 636 | return -1; |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 637 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 638 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 639 | s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp); |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 640 | if (!s) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 641 | return -1; |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 642 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 643 | |
| 644 | s->dgram_dst = saddr; |
| 645 | |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 646 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), |
| 647 | "socket: mcast=%s:%d", |
| 648 | inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 649 | return 0; |
Jason Wang | d89b4f8 | 2021-04-02 11:03:12 +0800 | [diff] [blame] | 650 | |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 651 | } |
| 652 | |
Stefan Hajnoczi | 4e68f7a | 2012-07-24 16:35:13 +0100 | [diff] [blame] | 653 | static int net_socket_udp_init(NetClientState *peer, |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 654 | const char *model, |
| 655 | const char *name, |
| 656 | const char *rhost, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 657 | const char *lhost, |
| 658 | Error **errp) |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 659 | { |
| 660 | NetSocketState *s; |
Sebastian Ottlik | bcbe92f | 2013-10-02 12:23:14 +0200 | [diff] [blame] | 661 | int fd, ret; |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 662 | struct sockaddr_in laddr, raddr; |
| 663 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 664 | if (parse_host_port(&laddr, lhost, errp) < 0) { |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 665 | return -1; |
| 666 | } |
| 667 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 668 | if (parse_host_port(&raddr, rhost, errp) < 0) { |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 669 | return -1; |
| 670 | } |
| 671 | |
| 672 | fd = qemu_socket(PF_INET, SOCK_DGRAM, 0); |
| 673 | if (fd < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 674 | error_setg_errno(errp, errno, "can't create datagram socket"); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 675 | return -1; |
| 676 | } |
Sebastian Ottlik | bcbe92f | 2013-10-02 12:23:14 +0200 | [diff] [blame] | 677 | |
| 678 | ret = socket_set_fast_reuse(fd); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 679 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 680 | error_setg_errno(errp, errno, |
| 681 | "can't set socket option SO_REUSEADDR"); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 682 | closesocket(fd); |
| 683 | return -1; |
| 684 | } |
| 685 | ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr)); |
| 686 | if (ret < 0) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 687 | error_setg_errno(errp, errno, "can't bind ip=%s to socket", |
| 688 | inet_ntoa(laddr.sin_addr)); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 689 | closesocket(fd); |
| 690 | return -1; |
| 691 | } |
Stefan Hajnoczi | fc13fa0 | 2013-03-27 10:10:44 +0100 | [diff] [blame] | 692 | qemu_set_nonblock(fd); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 693 | |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 694 | s = net_socket_fd_init(peer, model, name, fd, 0, NULL, errp); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 695 | if (!s) { |
| 696 | return -1; |
| 697 | } |
| 698 | |
| 699 | s->dgram_dst = raddr; |
| 700 | |
Jason Wang | 56e6f59 | 2021-04-02 11:03:33 +0800 | [diff] [blame] | 701 | snprintf(s->nc.info_str, sizeof(s->nc.info_str), |
| 702 | "socket: udp=%s:%d", |
| 703 | inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port)); |
Benjamin | 0e0e7fa | 2012-01-11 09:20:54 +0900 | [diff] [blame] | 704 | return 0; |
| 705 | } |
| 706 | |
Kővágó, Zoltán | cebea51 | 2016-07-13 21:50:12 -0600 | [diff] [blame] | 707 | int net_init_socket(const Netdev *netdev, const char *name, |
Markus Armbruster | a30ecde | 2015-05-15 13:58:50 +0200 | [diff] [blame] | 708 | NetClientState *peer, Error **errp) |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 709 | { |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 710 | const NetdevSocketOptions *sock; |
| 711 | |
Eric Blake | f394b2e | 2016-07-13 21:50:23 -0600 | [diff] [blame] | 712 | assert(netdev->type == NET_CLIENT_DRIVER_SOCKET); |
| 713 | sock = &netdev->u.socket; |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 714 | |
Jens Freimann | ff86d57 | 2017-09-27 17:21:18 +0200 | [diff] [blame] | 715 | if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast + |
| 716 | sock->has_udp != 1) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 717 | error_setg(errp, "exactly one of listen=, connect=, mcast= or udp=" |
| 718 | " is required"); |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 719 | return -1; |
| 720 | } |
| 721 | |
| 722 | if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 723 | error_setg(errp, "localaddr= is only valid with mcast= or udp="); |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 724 | return -1; |
| 725 | } |
| 726 | |
| 727 | if (sock->has_fd) { |
Laurent Vivier | 894022e | 2020-07-07 20:45:14 +0200 | [diff] [blame] | 728 | int fd, ret; |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 729 | |
Kevin Wolf | 947e474 | 2020-10-05 17:58:44 +0200 | [diff] [blame] | 730 | fd = monitor_fd_param(monitor_cur(), sock->fd, errp); |
Stefan Hajnoczi | fc13fa0 | 2013-03-27 10:10:44 +0100 | [diff] [blame] | 731 | if (fd == -1) { |
| 732 | return -1; |
| 733 | } |
Laurent Vivier | 894022e | 2020-07-07 20:45:14 +0200 | [diff] [blame] | 734 | ret = qemu_try_set_nonblock(fd); |
| 735 | if (ret < 0) { |
| 736 | error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d", |
| 737 | name, fd); |
| 738 | return -1; |
| 739 | } |
Mao Zhongyi | c37f0bb | 2017-09-04 22:35:38 +0800 | [diff] [blame] | 740 | if (!net_socket_fd_init(peer, "socket", name, fd, 1, sock->mcast, |
| 741 | errp)) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 742 | return -1; |
| 743 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 744 | return 0; |
| 745 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 746 | |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 747 | if (sock->has_listen) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 748 | if (net_socket_listen_init(peer, "socket", name, sock->listen, errp) |
| 749 | < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 750 | return -1; |
| 751 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 752 | return 0; |
| 753 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 754 | |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 755 | if (sock->has_connect) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 756 | if (net_socket_connect_init(peer, "socket", name, sock->connect, errp) |
| 757 | < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 758 | return -1; |
| 759 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 760 | return 0; |
| 761 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 762 | |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 763 | if (sock->has_mcast) { |
| 764 | /* if sock->localaddr is missing, it has been initialized to "all bits |
| 765 | * zero" */ |
Stefan Hajnoczi | d33d93b | 2012-07-24 16:35:05 +0100 | [diff] [blame] | 766 | if (net_socket_mcast_init(peer, "socket", name, sock->mcast, |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 767 | sock->localaddr, errp) < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 768 | return -1; |
| 769 | } |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 770 | return 0; |
| 771 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 772 | |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 773 | assert(sock->has_udp); |
| 774 | if (!sock->has_localaddr) { |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 775 | error_setg(errp, "localaddr= is mandatory with udp="); |
Laszlo Ersek | bef8e8f | 2012-07-17 16:17:17 +0200 | [diff] [blame] | 776 | return -1; |
| 777 | } |
Mao Zhongyi | 0522a95 | 2017-09-04 22:35:40 +0800 | [diff] [blame] | 778 | if (net_socket_udp_init(peer, "socket", name, sock->udp, sock->localaddr, |
| 779 | errp) < 0) { |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 780 | return -1; |
| 781 | } |
Mark McLoughlin | 42281ac | 2009-11-25 18:48:56 +0000 | [diff] [blame] | 782 | return 0; |
| 783 | } |