4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
26 #include "config-host.h"
29 #include "net/socket.h"
31 #include "net/slirp.h"
36 #include "qemu-common.h"
37 #include "qemu_socket.h"
41 static QTAILQ_HEAD(, VLANState) vlans;
42 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
46 /***********************************************************/
47 /* network device redirectors */
49 #if defined(DEBUG_NET)
50 static void hex_dump(FILE *f, const uint8_t *buf, int size)
54 for(i=0;i<size;i+=16) {
58 fprintf(f, "%08x ", i);
61 fprintf(f, " %02x", buf[i+j]);
68 if (c < ' ' || c > '~')
77 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
88 if (len > buf_size - 1)
97 int parse_host_port(struct sockaddr_in *saddr, const char *str)
105 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
107 saddr->sin_family = AF_INET;
108 if (buf[0] == '\0') {
109 saddr->sin_addr.s_addr = 0;
111 if (qemu_isdigit(buf[0])) {
112 if (!inet_aton(buf, &saddr->sin_addr))
115 if ((he = gethostbyname(buf)) == NULL)
117 saddr->sin_addr = *(struct in_addr *)he->h_addr;
120 port = strtol(p, (char **)&r, 0);
123 saddr->sin_port = htons(port);
127 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
129 snprintf(vc->info_str, sizeof(vc->info_str),
130 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
132 macaddr[0], macaddr[1], macaddr[2],
133 macaddr[3], macaddr[4], macaddr[5]);
136 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
138 static int index = 0;
139 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
141 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
143 macaddr->a[0] = 0x52;
144 macaddr->a[1] = 0x54;
145 macaddr->a[2] = 0x00;
146 macaddr->a[3] = 0x12;
147 macaddr->a[4] = 0x34;
148 macaddr->a[5] = 0x56 + index++;
151 static char *assign_name(VLANClientState *vc1, const char *model)
157 QTAILQ_FOREACH(vlan, &vlans, next) {
160 QTAILQ_FOREACH(vc, &vlan->clients, next) {
161 if (vc != vc1 && strcmp(vc->model, model) == 0) {
167 snprintf(buf, sizeof(buf), "%s.%d", model, id);
169 return qemu_strdup(buf);
172 static ssize_t qemu_deliver_packet(VLANClientState *sender,
177 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
179 const struct iovec *iov,
183 VLANClientState *qemu_new_net_client(NetClientInfo *info,
185 VLANClientState *peer,
191 assert(info->size >= sizeof(VLANClientState));
193 vc = qemu_mallocz(info->size);
196 vc->model = qemu_strdup(model);
198 vc->name = qemu_strdup(name);
200 vc->name = assign_name(vc, model);
206 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
213 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
215 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
216 qemu_deliver_packet_iov,
223 NICState *qemu_new_nic(NetClientInfo *info,
232 assert(info->type == NET_CLIENT_TYPE_NIC);
233 assert(info->size >= sizeof(NICState));
235 nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
237 nic = DO_UPCAST(NICState, nc, nc);
239 nic->opaque = opaque;
244 static void qemu_cleanup_vlan_client(VLANClientState *vc)
247 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
249 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
252 if (vc->info->cleanup) {
253 vc->info->cleanup(vc);
257 static void qemu_free_vlan_client(VLANClientState *vc)
260 if (vc->send_queue) {
261 qemu_del_net_queue(vc->send_queue);
264 vc->peer->peer = NULL;
268 qemu_free(vc->model);
272 void qemu_del_vlan_client(VLANClientState *vc)
274 /* If there is a peer NIC, delete and cleanup client, but do not free. */
275 if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
276 NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
277 if (nic->peer_deleted) {
280 nic->peer_deleted = true;
281 /* Let NIC know peer is gone. */
282 vc->peer->link_down = true;
283 if (vc->peer->info->link_status_changed) {
284 vc->peer->info->link_status_changed(vc->peer);
286 qemu_cleanup_vlan_client(vc);
290 /* If this is a peer NIC and peer has already been deleted, free it now. */
291 if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
292 NICState *nic = DO_UPCAST(NICState, nc, vc);
293 if (nic->peer_deleted) {
294 qemu_free_vlan_client(vc->peer);
298 qemu_cleanup_vlan_client(vc);
299 qemu_free_vlan_client(vc);
303 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
304 const char *client_str)
309 vlan = qemu_find_vlan(vlan_id, 0);
311 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
315 QTAILQ_FOREACH(vc, &vlan->clients, next) {
316 if (!strcmp(vc->name, client_str)) {
321 monitor_printf(mon, "can't find device %s on VLAN %d\n",
322 client_str, vlan_id);
328 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
333 QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
334 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
335 func(DO_UPCAST(NICState, nc, nc), opaque);
339 QTAILQ_FOREACH(vlan, &vlans, next) {
340 QTAILQ_FOREACH(nc, &vlan->clients, next) {
341 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
342 func(DO_UPCAST(NICState, nc, nc), opaque);
348 int qemu_can_send_packet(VLANClientState *sender)
350 VLANState *vlan = sender->vlan;
354 if (sender->peer->receive_disabled) {
356 } else if (sender->peer->info->can_receive &&
357 !sender->peer->info->can_receive(sender->peer)) {
368 QTAILQ_FOREACH(vc, &vlan->clients, next) {
373 /* no can_receive() handler, they can always receive */
374 if (vc->info->can_receive && !vc->info->can_receive(vc)) {
381 static ssize_t qemu_deliver_packet(VLANClientState *sender,
387 VLANClientState *vc = opaque;
394 if (vc->receive_disabled) {
398 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
399 ret = vc->info->receive_raw(vc, data, size);
401 ret = vc->info->receive(vc, data, size);
405 vc->receive_disabled = 1;
411 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
417 VLANState *vlan = opaque;
421 QTAILQ_FOREACH(vc, &vlan->clients, next) {
433 if (vc->receive_disabled) {
438 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
439 len = vc->info->receive_raw(vc, buf, size);
441 len = vc->info->receive(vc, buf, size);
445 vc->receive_disabled = 1;
448 ret = (ret >= 0) ? ret : len;
455 void qemu_purge_queued_packets(VLANClientState *vc)
459 if (!vc->peer && !vc->vlan) {
464 queue = vc->peer->send_queue;
466 queue = vc->vlan->send_queue;
469 qemu_net_queue_purge(queue, vc);
472 void qemu_flush_queued_packets(VLANClientState *vc)
476 vc->receive_disabled = 0;
479 queue = vc->vlan->send_queue;
481 queue = vc->send_queue;
484 qemu_net_queue_flush(queue);
487 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
489 const uint8_t *buf, int size,
490 NetPacketSent *sent_cb)
495 printf("qemu_send_packet_async:\n");
496 hex_dump(stdout, buf, size);
499 if (sender->link_down || (!sender->peer && !sender->vlan)) {
504 queue = sender->peer->send_queue;
506 queue = sender->vlan->send_queue;
509 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
512 ssize_t qemu_send_packet_async(VLANClientState *sender,
513 const uint8_t *buf, int size,
514 NetPacketSent *sent_cb)
516 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
520 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
522 qemu_send_packet_async(vc, buf, size, NULL);
525 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
527 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
531 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
534 uint8_t buffer[4096];
537 offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer));
539 return vc->info->receive(vc, buffer, offset);
542 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
544 const struct iovec *iov,
548 VLANClientState *vc = opaque;
551 return iov_size(iov, iovcnt);
554 if (vc->info->receive_iov) {
555 return vc->info->receive_iov(vc, iov, iovcnt);
557 return vc_sendv_compat(vc, iov, iovcnt);
561 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
563 const struct iovec *iov,
567 VLANState *vlan = opaque;
571 QTAILQ_FOREACH(vc, &vlan->clients, next) {
579 ret = iov_size(iov, iovcnt);
583 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
585 if (vc->info->receive_iov) {
586 len = vc->info->receive_iov(vc, iov, iovcnt);
588 len = vc_sendv_compat(vc, iov, iovcnt);
591 ret = (ret >= 0) ? ret : len;
597 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
598 const struct iovec *iov, int iovcnt,
599 NetPacketSent *sent_cb)
603 if (sender->link_down || (!sender->peer && !sender->vlan)) {
604 return iov_size(iov, iovcnt);
608 queue = sender->peer->send_queue;
610 queue = sender->vlan->send_queue;
613 return qemu_net_queue_send_iov(queue, sender,
614 QEMU_NET_PACKET_FLAG_NONE,
615 iov, iovcnt, sent_cb);
619 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
621 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
624 /* find or alloc a new VLAN */
625 VLANState *qemu_find_vlan(int id, int allocate)
629 QTAILQ_FOREACH(vlan, &vlans, next) {
630 if (vlan->id == id) {
639 vlan = qemu_mallocz(sizeof(VLANState));
641 QTAILQ_INIT(&vlan->clients);
643 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
644 qemu_vlan_deliver_packet_iov,
647 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
652 VLANClientState *qemu_find_netdev(const char *id)
656 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
657 if (!strcmp(vc->name, id)) {
665 static int nic_get_free_idx(void)
669 for (index = 0; index < MAX_NICS; index++)
670 if (!nd_table[index].used)
675 int qemu_show_nic_models(const char *arg, const char *const *models)
679 if (!arg || strcmp(arg, "?"))
682 fprintf(stderr, "qemu: Supported NIC models: ");
683 for (i = 0 ; models[i]; i++)
684 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
688 void qemu_check_nic_model(NICInfo *nd, const char *model)
690 const char *models[2];
695 if (qemu_show_nic_models(nd->model, models))
697 if (qemu_find_nic_model(nd, models, model) < 0)
701 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
702 const char *default_model)
707 nd->model = qemu_strdup(default_model);
709 for (i = 0 ; models[i]; i++) {
710 if (strcmp(nd->model, models[i]) == 0)
714 error_report("qemu: Unsupported NIC model: %s", nd->model);
718 int net_handle_fd_param(Monitor *mon, const char *param)
722 if (!qemu_isdigit(param[0]) && mon) {
724 fd = monitor_get_fd(mon, param);
726 error_report("No file descriptor named %s found", param);
732 fd = strtol(param, &endptr, 10);
733 if (*endptr || (fd == 0 && param == endptr)) {
741 static int net_init_nic(QemuOpts *opts,
750 idx = nic_get_free_idx();
751 if (idx == -1 || nb_nics >= MAX_NICS) {
752 error_report("Too Many NICs");
758 memset(nd, 0, sizeof(*nd));
760 if ((netdev = qemu_opt_get(opts, "netdev"))) {
761 nd->netdev = qemu_find_netdev(netdev);
763 error_report("netdev '%s' not found", netdev);
771 nd->name = qemu_strdup(name);
773 if (qemu_opt_get(opts, "model")) {
774 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
776 if (qemu_opt_get(opts, "addr")) {
777 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
780 nd->macaddr[0] = 0x52;
781 nd->macaddr[1] = 0x54;
782 nd->macaddr[2] = 0x00;
783 nd->macaddr[3] = 0x12;
784 nd->macaddr[4] = 0x34;
785 nd->macaddr[5] = 0x56 + idx;
787 if (qemu_opt_get(opts, "macaddr") &&
788 net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
789 error_report("invalid syntax for ethernet address");
793 nd->nvectors = qemu_opt_get_number(opts, "vectors",
794 DEV_NVECTORS_UNSPECIFIED);
795 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
796 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
797 error_report("invalid # of vectors: %d", nd->nvectors);
807 #define NET_COMMON_PARAMS_DESC \
810 .type = QEMU_OPT_STRING, \
811 .help = "net client type (nic, tap etc.)", \
814 .type = QEMU_OPT_NUMBER, \
815 .help = "vlan number", \
818 .type = QEMU_OPT_STRING, \
819 .help = "identifier for monitor commands", \
822 typedef int (*net_client_init_func)(QemuOpts *opts,
827 /* magic number, but compiler will warn if too small */
828 #define NET_MAX_DESC 20
830 static const struct {
832 net_client_init_func init;
833 QemuOptDesc desc[NET_MAX_DESC];
834 } net_client_types[] = {
838 NET_COMMON_PARAMS_DESC,
839 { /* end of list */ }
843 .init = net_init_nic,
845 NET_COMMON_PARAMS_DESC,
848 .type = QEMU_OPT_STRING,
849 .help = "id of -netdev to connect to",
853 .type = QEMU_OPT_STRING,
854 .help = "MAC address",
857 .type = QEMU_OPT_STRING,
858 .help = "device model (e1000, rtl8139, virtio etc.)",
861 .type = QEMU_OPT_STRING,
862 .help = "PCI device address",
865 .type = QEMU_OPT_NUMBER,
866 .help = "number of MSI-x vectors, 0 to disable MSI-X",
868 { /* end of list */ }
873 .init = net_init_slirp,
875 NET_COMMON_PARAMS_DESC,
878 .type = QEMU_OPT_STRING,
879 .help = "client hostname reported by the builtin DHCP server",
882 .type = QEMU_OPT_STRING,
883 .help = "isolate the guest from the host (y|yes|n|no)",
886 .type = QEMU_OPT_STRING,
887 .help = "legacy parameter, use net= instead",
890 .type = QEMU_OPT_STRING,
891 .help = "IP address and optional netmask",
894 .type = QEMU_OPT_STRING,
895 .help = "guest-visible address of the host",
898 .type = QEMU_OPT_STRING,
899 .help = "root directory of the built-in TFTP server",
902 .type = QEMU_OPT_STRING,
903 .help = "BOOTP filename, for use with tftp=",
906 .type = QEMU_OPT_STRING,
907 .help = "the first of the 16 IPs the built-in DHCP server can assign",
910 .type = QEMU_OPT_STRING,
911 .help = "guest-visible address of the virtual nameserver",
914 .type = QEMU_OPT_STRING,
915 .help = "root directory of the built-in SMB server",
918 .type = QEMU_OPT_STRING,
919 .help = "IP address of the built-in SMB server",
922 .type = QEMU_OPT_STRING,
923 .help = "guest port number to forward incoming TCP or UDP connections",
926 .type = QEMU_OPT_STRING,
927 .help = "IP address and port to forward guest TCP connections",
929 { /* end of list */ }
934 .init = net_init_tap,
936 NET_COMMON_PARAMS_DESC,
939 .type = QEMU_OPT_STRING,
940 .help = "interface name",
945 .type = QEMU_OPT_STRING,
946 .help = "file descriptor of an already opened tap",
949 .type = QEMU_OPT_STRING,
950 .help = "script to initialize the interface",
952 .name = "downscript",
953 .type = QEMU_OPT_STRING,
954 .help = "script to shut down the interface",
957 .type = QEMU_OPT_SIZE,
958 .help = "send buffer limit"
961 .type = QEMU_OPT_BOOL,
962 .help = "enable the IFF_VNET_HDR flag on the tap interface"
965 .type = QEMU_OPT_BOOL,
966 .help = "enable vhost-net network accelerator",
969 .type = QEMU_OPT_STRING,
970 .help = "file descriptor of an already opened vhost net device",
972 .name = "vhostforce",
973 .type = QEMU_OPT_BOOL,
974 .help = "force vhost on for non-MSIX virtio guests",
977 { /* end of list */ }
981 .init = net_init_socket,
983 NET_COMMON_PARAMS_DESC,
986 .type = QEMU_OPT_STRING,
987 .help = "file descriptor of an already opened socket",
990 .type = QEMU_OPT_STRING,
991 .help = "port number, and optional hostname, to listen on",
994 .type = QEMU_OPT_STRING,
995 .help = "port number, and optional hostname, to connect to",
998 .type = QEMU_OPT_STRING,
999 .help = "UDP multicast address and port number",
1001 .name = "localaddr",
1002 .type = QEMU_OPT_STRING,
1003 .help = "source address for multicast packets",
1005 { /* end of list */ }
1010 .init = net_init_vde,
1012 NET_COMMON_PARAMS_DESC,
1015 .type = QEMU_OPT_STRING,
1016 .help = "socket path",
1019 .type = QEMU_OPT_NUMBER,
1020 .help = "port number",
1023 .type = QEMU_OPT_STRING,
1024 .help = "group owner of socket",
1027 .type = QEMU_OPT_NUMBER,
1028 .help = "permissions for socket",
1030 { /* end of list */ }
1035 .init = net_init_dump,
1037 NET_COMMON_PARAMS_DESC,
1040 .type = QEMU_OPT_SIZE,
1041 .help = "per-packet size limit (64k default)",
1044 .type = QEMU_OPT_STRING,
1045 .help = "dump file path (default is qemu-vlan0.pcap)",
1047 { /* end of list */ }
1050 { /* end of list */ }
1053 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
1059 type = qemu_opt_get(opts, "type");
1061 qerror_report(QERR_MISSING_PARAMETER, "type");
1066 if (strcmp(type, "tap") != 0 &&
1068 strcmp(type, "user") != 0 &&
1071 strcmp(type, "vde") != 0 &&
1073 strcmp(type, "socket") != 0) {
1074 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1075 "a netdev backend type");
1079 if (qemu_opt_get(opts, "vlan")) {
1080 qerror_report(QERR_INVALID_PARAMETER, "vlan");
1083 if (qemu_opt_get(opts, "name")) {
1084 qerror_report(QERR_INVALID_PARAMETER, "name");
1087 if (!qemu_opts_id(opts)) {
1088 qerror_report(QERR_MISSING_PARAMETER, "id");
1093 name = qemu_opts_id(opts);
1095 name = qemu_opt_get(opts, "name");
1098 for (i = 0; net_client_types[i].type != NULL; i++) {
1099 if (!strcmp(net_client_types[i].type, type)) {
1100 VLANState *vlan = NULL;
1103 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1107 /* Do not add to a vlan if it's a -netdev or a nic with a
1108 * netdev= parameter. */
1110 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1111 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1115 if (net_client_types[i].init) {
1116 ret = net_client_types[i].init(opts, mon, name, vlan);
1118 /* TODO push error reporting into init() methods */
1119 qerror_report(QERR_DEVICE_INIT_FAILED, type);
1127 qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
1128 "a network client type");
1132 static int net_host_check_device(const char *device)
1135 const char *valid_param_list[] = { "tap", "socket", "dump"
1143 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1144 if (!strncmp(valid_param_list[i], device,
1145 strlen(valid_param_list[i])))
1152 void net_host_device_add(Monitor *mon, const QDict *qdict)
1154 const char *device = qdict_get_str(qdict, "device");
1155 const char *opts_str = qdict_get_try_str(qdict, "opts");
1158 if (!net_host_check_device(device)) {
1159 monitor_printf(mon, "invalid host network device %s\n", device);
1163 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
1168 qemu_opt_set(opts, "type", device);
1170 if (net_client_init(mon, opts, 0) < 0) {
1171 monitor_printf(mon, "adding host network device %s failed\n", device);
1175 void net_host_device_remove(Monitor *mon, const QDict *qdict)
1177 VLANClientState *vc;
1178 int vlan_id = qdict_get_int(qdict, "vlan_id");
1179 const char *device = qdict_get_str(qdict, "device");
1181 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1185 if (!net_host_check_device(vc->model)) {
1186 monitor_printf(mon, "invalid host network device %s\n", device);
1189 qemu_del_vlan_client(vc);
1192 int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
1197 opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
1202 res = net_client_init(mon, opts, 1);
1204 qemu_opts_del(opts);
1210 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
1212 const char *id = qdict_get_str(qdict, "id");
1213 VLANClientState *vc;
1215 vc = qemu_find_netdev(id);
1216 if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) {
1217 qerror_report(QERR_DEVICE_NOT_FOUND, id);
1220 qemu_del_vlan_client(vc);
1221 qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
1225 void do_info_network(Monitor *mon)
1228 VLANClientState *vc;
1230 QTAILQ_FOREACH(vlan, &vlans, next) {
1231 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1233 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1234 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
1237 monitor_printf(mon, "Devices not on any VLAN:\n");
1238 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1239 monitor_printf(mon, " %s: %s", vc->name, vc->info_str);
1241 monitor_printf(mon, " peer=%s", vc->peer->name);
1243 monitor_printf(mon, "\n");
1247 int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data)
1250 VLANClientState *vc = NULL;
1251 const char *name = qdict_get_str(qdict, "name");
1252 int up = qdict_get_bool(qdict, "up");
1254 QTAILQ_FOREACH(vlan, &vlans, next) {
1255 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1256 if (strcmp(vc->name, name) == 0) {
1261 vc = qemu_find_netdev(name);
1265 qerror_report(QERR_DEVICE_NOT_FOUND, name);
1269 vc->link_down = !up;
1271 if (vc->info->link_status_changed) {
1272 vc->info->link_status_changed(vc);
1275 /* Notify peer. Don't update peer link status: this makes it possible to
1276 * disconnect from host network without notifying the guest.
1277 * FIXME: is disconnected link status change operation useful?
1279 * Current behaviour is compatible with qemu vlans where there could be
1280 * multiple clients that can still communicate with each other in
1281 * disconnected mode. For now maintain this compatibility. */
1282 if (vc->peer && vc->peer->info->link_status_changed) {
1283 vc->peer->info->link_status_changed(vc->peer);
1288 void net_cleanup(void)
1291 VLANClientState *vc, *next_vc;
1293 QTAILQ_FOREACH(vlan, &vlans, next) {
1294 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1295 qemu_del_vlan_client(vc);
1299 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1300 qemu_del_vlan_client(vc);
1304 void net_check_clients(void)
1307 VLANClientState *vc;
1310 /* Don't warn about the default network setup that you get if
1311 * no command line -net options are specified. There are two
1312 * cases that we would otherwise complain about:
1313 * (1) board doesn't support a NIC but the implicit "-net nic"
1314 * requested one; we'd otherwise complain about more NICs being
1315 * specified than we support, and also that the vlan set up by
1316 * the implicit "-net user" didn't have any NICs connected to it
1317 * (2) CONFIG_SLIRP not set: we'd otherwise complain about the
1318 * implicit "-net nic" setting up a nic that wasn't connected to
1325 QTAILQ_FOREACH(vlan, &vlans, next) {
1326 int has_nic = 0, has_host_dev = 0;
1328 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1329 switch (vc->info->type) {
1330 case NET_CLIENT_TYPE_NIC:
1334 case NET_CLIENT_TYPE_SLIRP:
1335 case NET_CLIENT_TYPE_TAP:
1336 case NET_CLIENT_TYPE_SOCKET:
1337 case NET_CLIENT_TYPE_VDE:
1343 if (has_host_dev && !has_nic)
1344 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1345 if (has_nic && !has_host_dev)
1347 "Warning: vlan %d is not connected to host network\n",
1350 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1351 if (vc->info->type == NET_CLIENT_TYPE_NIC) {
1355 fprintf(stderr, "Warning: %s %s has no peer\n",
1356 vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
1360 if (seen_nics != nb_nics) {
1361 /* Number of NICs requested by user on command line doesn't match
1362 * the number the model actually registered with us.
1363 * This will generally only happen for models of embedded boards
1364 * with no PCI bus or similar. PCI based machines can instantiate
1365 * all requested NICs as PCI devices but usually embedded boards
1366 * only have a single NIC.
1368 fprintf(stderr, "Warning: more nics requested than this machine "
1369 "supports; some have been ignored\n");
1373 static int net_init_client(QemuOpts *opts, void *dummy)
1375 if (net_client_init(NULL, opts, 0) < 0)
1380 static int net_init_netdev(QemuOpts *opts, void *dummy)
1382 return net_client_init(NULL, opts, 1);
1385 int net_init_clients(void)
1387 QemuOptsList *net = qemu_find_opts("net");
1390 /* if no clients, we use a default config */
1391 qemu_opts_set(net, NULL, "type", "nic");
1393 qemu_opts_set(net, NULL, "type", "user");
1397 QTAILQ_INIT(&vlans);
1398 QTAILQ_INIT(&non_vlan_clients);
1400 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
1403 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
1410 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1412 #if defined(CONFIG_SLIRP)
1414 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1419 if (!qemu_opts_parse(opts_list, optarg, 1)) {