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"
40 static QTAILQ_HEAD(, VLANState) vlans;
41 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
45 /***********************************************************/
46 /* network device redirectors */
48 #if defined(DEBUG_NET)
49 static void hex_dump(FILE *f, const uint8_t *buf, int size)
53 for(i=0;i<size;i+=16) {
57 fprintf(f, "%08x ", i);
60 fprintf(f, " %02x", buf[i+j]);
67 if (c < ' ' || c > '~')
76 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
87 if (len > buf_size - 1)
96 int parse_host_src_port(struct sockaddr_in *haddr,
97 struct sockaddr_in *saddr,
98 const char *input_str)
100 char *str = qemu_strdup(input_str);
101 char *host_str = str;
103 const char *src_str2;
107 * Chop off any extra arguments at the end of the string which
108 * would start with a comma, then fill in the src port information
109 * if it was provided else use the "any address" and "any port".
111 if ((ptr = strchr(str,',')))
114 if ((src_str = strchr(input_str,'@'))) {
119 if (parse_host_port(haddr, host_str) < 0)
123 if (!src_str || *src_str == '\0')
126 if (parse_host_port(saddr, src_str2) < 0)
137 int parse_host_port(struct sockaddr_in *saddr, const char *str)
145 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
147 saddr->sin_family = AF_INET;
148 if (buf[0] == '\0') {
149 saddr->sin_addr.s_addr = 0;
151 if (qemu_isdigit(buf[0])) {
152 if (!inet_aton(buf, &saddr->sin_addr))
155 if ((he = gethostbyname(buf)) == NULL)
157 saddr->sin_addr = *(struct in_addr *)he->h_addr;
160 port = strtol(p, (char **)&r, 0);
163 saddr->sin_port = htons(port);
167 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
169 snprintf(vc->info_str, sizeof(vc->info_str),
170 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
172 macaddr[0], macaddr[1], macaddr[2],
173 macaddr[3], macaddr[4], macaddr[5]);
176 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
178 static int index = 0;
179 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
181 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
183 macaddr->a[0] = 0x52;
184 macaddr->a[1] = 0x54;
185 macaddr->a[2] = 0x00;
186 macaddr->a[3] = 0x12;
187 macaddr->a[4] = 0x34;
188 macaddr->a[5] = 0x56 + index++;
191 static char *assign_name(VLANClientState *vc1, const char *model)
197 QTAILQ_FOREACH(vlan, &vlans, next) {
200 QTAILQ_FOREACH(vc, &vlan->clients, next) {
201 if (vc != vc1 && strcmp(vc->model, model) == 0) {
207 snprintf(buf, sizeof(buf), "%s.%d", model, id);
209 return qemu_strdup(buf);
212 static ssize_t qemu_deliver_packet(VLANClientState *sender,
217 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
219 const struct iovec *iov,
223 VLANClientState *qemu_new_net_client(NetClientInfo *info,
225 VLANClientState *peer,
231 assert(info->size >= sizeof(VLANClientState));
233 vc = qemu_mallocz(info->size);
236 vc->model = qemu_strdup(model);
238 vc->name = qemu_strdup(name);
240 vc->name = assign_name(vc, model);
246 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
253 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
255 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
256 qemu_deliver_packet_iov,
263 NICState *qemu_new_nic(NetClientInfo *info,
272 assert(info->type == NET_CLIENT_TYPE_NIC);
273 assert(info->size >= sizeof(NICState));
275 nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
277 nic = DO_UPCAST(NICState, nc, nc);
279 nic->opaque = opaque;
284 void qemu_del_vlan_client(VLANClientState *vc)
287 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
289 if (vc->send_queue) {
290 qemu_del_net_queue(vc->send_queue);
292 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
294 vc->peer->peer = NULL;
298 if (vc->info->cleanup) {
299 vc->info->cleanup(vc);
303 qemu_free(vc->model);
308 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
309 const char *client_str)
314 vlan = qemu_find_vlan(vlan_id, 0);
316 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
320 QTAILQ_FOREACH(vc, &vlan->clients, next) {
321 if (!strcmp(vc->name, client_str)) {
326 monitor_printf(mon, "can't find device %s on VLAN %d\n",
327 client_str, vlan_id);
333 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
338 QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
339 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
340 func(DO_UPCAST(NICState, nc, nc), opaque);
344 QTAILQ_FOREACH(vlan, &vlans, next) {
345 QTAILQ_FOREACH(nc, &vlan->clients, next) {
346 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
347 func(DO_UPCAST(NICState, nc, nc), opaque);
353 int qemu_can_send_packet(VLANClientState *sender)
355 VLANState *vlan = sender->vlan;
359 if (sender->peer->receive_disabled) {
361 } else if (sender->peer->info->can_receive &&
362 !sender->peer->info->can_receive(sender->peer)) {
373 QTAILQ_FOREACH(vc, &vlan->clients, next) {
378 /* no can_receive() handler, they can always receive */
379 if (!vc->info->can_receive || vc->info->can_receive(vc)) {
386 static ssize_t qemu_deliver_packet(VLANClientState *sender,
392 VLANClientState *vc = opaque;
399 if (vc->receive_disabled) {
403 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
404 ret = vc->info->receive_raw(vc, data, size);
406 ret = vc->info->receive(vc, data, size);
410 vc->receive_disabled = 1;
416 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
422 VLANState *vlan = opaque;
426 QTAILQ_FOREACH(vc, &vlan->clients, next) {
438 if (vc->receive_disabled) {
443 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
444 len = vc->info->receive_raw(vc, buf, size);
446 len = vc->info->receive(vc, buf, size);
450 vc->receive_disabled = 1;
453 ret = (ret >= 0) ? ret : len;
460 void qemu_purge_queued_packets(VLANClientState *vc)
464 if (!vc->peer && !vc->vlan) {
469 queue = vc->peer->send_queue;
471 queue = vc->vlan->send_queue;
474 qemu_net_queue_purge(queue, vc);
477 void qemu_flush_queued_packets(VLANClientState *vc)
481 vc->receive_disabled = 0;
484 queue = vc->vlan->send_queue;
486 queue = vc->send_queue;
489 qemu_net_queue_flush(queue);
492 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
494 const uint8_t *buf, int size,
495 NetPacketSent *sent_cb)
500 printf("qemu_send_packet_async:\n");
501 hex_dump(stdout, buf, size);
504 if (sender->link_down || (!sender->peer && !sender->vlan)) {
509 queue = sender->peer->send_queue;
511 queue = sender->vlan->send_queue;
514 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
517 ssize_t qemu_send_packet_async(VLANClientState *sender,
518 const uint8_t *buf, int size,
519 NetPacketSent *sent_cb)
521 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
525 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
527 qemu_send_packet_async(vc, buf, size, NULL);
530 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
532 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
536 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
539 uint8_t buffer[4096];
543 for (i = 0; i < iovcnt; i++) {
546 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
547 memcpy(buffer + offset, iov[i].iov_base, len);
551 return vc->info->receive(vc, buffer, offset);
554 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
559 for (i = 0; i < iovcnt; i++)
560 offset += iov[i].iov_len;
564 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
566 const struct iovec *iov,
570 VLANClientState *vc = opaque;
573 return calc_iov_length(iov, iovcnt);
576 if (vc->info->receive_iov) {
577 return vc->info->receive_iov(vc, iov, iovcnt);
579 return vc_sendv_compat(vc, iov, iovcnt);
583 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
585 const struct iovec *iov,
589 VLANState *vlan = opaque;
593 QTAILQ_FOREACH(vc, &vlan->clients, next) {
601 ret = calc_iov_length(iov, iovcnt);
605 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
607 if (vc->info->receive_iov) {
608 len = vc->info->receive_iov(vc, iov, iovcnt);
610 len = vc_sendv_compat(vc, iov, iovcnt);
613 ret = (ret >= 0) ? ret : len;
619 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
620 const struct iovec *iov, int iovcnt,
621 NetPacketSent *sent_cb)
625 if (sender->link_down || (!sender->peer && !sender->vlan)) {
626 return calc_iov_length(iov, iovcnt);
630 queue = sender->peer->send_queue;
632 queue = sender->vlan->send_queue;
635 return qemu_net_queue_send_iov(queue, sender,
636 QEMU_NET_PACKET_FLAG_NONE,
637 iov, iovcnt, sent_cb);
641 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
643 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
646 /* find or alloc a new VLAN */
647 VLANState *qemu_find_vlan(int id, int allocate)
651 QTAILQ_FOREACH(vlan, &vlans, next) {
652 if (vlan->id == id) {
661 vlan = qemu_mallocz(sizeof(VLANState));
663 QTAILQ_INIT(&vlan->clients);
665 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
666 qemu_vlan_deliver_packet_iov,
669 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
674 VLANClientState *qemu_find_netdev(const char *id)
678 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
679 if (!strcmp(vc->name, id)) {
687 static int nic_get_free_idx(void)
691 for (index = 0; index < MAX_NICS; index++)
692 if (!nd_table[index].used)
697 int qemu_show_nic_models(const char *arg, const char *const *models)
701 if (!arg || strcmp(arg, "?"))
704 fprintf(stderr, "qemu: Supported NIC models: ");
705 for (i = 0 ; models[i]; i++)
706 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
710 void qemu_check_nic_model(NICInfo *nd, const char *model)
712 const char *models[2];
717 if (qemu_show_nic_models(nd->model, models))
719 if (qemu_find_nic_model(nd, models, model) < 0)
723 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
724 const char *default_model)
729 nd->model = qemu_strdup(default_model);
731 for (i = 0 ; models[i]; i++) {
732 if (strcmp(nd->model, models[i]) == 0)
736 error_report("qemu: Unsupported NIC model: %s", nd->model);
740 int net_handle_fd_param(Monitor *mon, const char *param)
742 if (!qemu_isdigit(param[0])) {
745 fd = monitor_get_fd(mon, param);
747 error_report("No file descriptor named %s found", param);
753 return strtol(param, NULL, 0);
757 static int net_init_nic(QemuOpts *opts,
766 idx = nic_get_free_idx();
767 if (idx == -1 || nb_nics >= MAX_NICS) {
768 error_report("Too Many NICs");
774 memset(nd, 0, sizeof(*nd));
776 if ((netdev = qemu_opt_get(opts, "netdev"))) {
777 nd->netdev = qemu_find_netdev(netdev);
779 error_report("netdev '%s' not found", netdev);
787 nd->name = qemu_strdup(name);
789 if (qemu_opt_get(opts, "model")) {
790 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
792 if (qemu_opt_get(opts, "addr")) {
793 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
796 nd->macaddr[0] = 0x52;
797 nd->macaddr[1] = 0x54;
798 nd->macaddr[2] = 0x00;
799 nd->macaddr[3] = 0x12;
800 nd->macaddr[4] = 0x34;
801 nd->macaddr[5] = 0x56 + idx;
803 if (qemu_opt_get(opts, "macaddr") &&
804 net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
805 error_report("invalid syntax for ethernet address");
809 nd->nvectors = qemu_opt_get_number(opts, "vectors",
810 DEV_NVECTORS_UNSPECIFIED);
811 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
812 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
813 error_report("invalid # of vectors: %d", nd->nvectors);
823 #define NET_COMMON_PARAMS_DESC \
826 .type = QEMU_OPT_STRING, \
827 .help = "net client type (nic, tap etc.)", \
830 .type = QEMU_OPT_NUMBER, \
831 .help = "vlan number", \
834 .type = QEMU_OPT_STRING, \
835 .help = "identifier for monitor commands", \
838 typedef int (*net_client_init_func)(QemuOpts *opts,
843 /* magic number, but compiler will warn if too small */
844 #define NET_MAX_DESC 20
846 static const struct {
848 net_client_init_func init;
849 QemuOptDesc desc[NET_MAX_DESC];
850 } net_client_types[] = {
854 NET_COMMON_PARAMS_DESC,
855 { /* end of list */ }
859 .init = net_init_nic,
861 NET_COMMON_PARAMS_DESC,
864 .type = QEMU_OPT_STRING,
865 .help = "id of -netdev to connect to",
869 .type = QEMU_OPT_STRING,
870 .help = "MAC address",
873 .type = QEMU_OPT_STRING,
874 .help = "device model (e1000, rtl8139, virtio etc.)",
877 .type = QEMU_OPT_STRING,
878 .help = "PCI device address",
881 .type = QEMU_OPT_NUMBER,
882 .help = "number of MSI-x vectors, 0 to disable MSI-X",
884 { /* end of list */ }
889 .init = net_init_slirp,
891 NET_COMMON_PARAMS_DESC,
894 .type = QEMU_OPT_STRING,
895 .help = "client hostname reported by the builtin DHCP server",
898 .type = QEMU_OPT_STRING,
899 .help = "isolate the guest from the host (y|yes|n|no)",
902 .type = QEMU_OPT_STRING,
903 .help = "legacy parameter, use net= instead",
906 .type = QEMU_OPT_STRING,
907 .help = "IP address and optional netmask",
910 .type = QEMU_OPT_STRING,
911 .help = "guest-visible address of the host",
914 .type = QEMU_OPT_STRING,
915 .help = "root directory of the built-in TFTP server",
918 .type = QEMU_OPT_STRING,
919 .help = "BOOTP filename, for use with tftp=",
922 .type = QEMU_OPT_STRING,
923 .help = "the first of the 16 IPs the built-in DHCP server can assign",
926 .type = QEMU_OPT_STRING,
927 .help = "guest-visible address of the virtual nameserver",
930 .type = QEMU_OPT_STRING,
931 .help = "root directory of the built-in SMB server",
934 .type = QEMU_OPT_STRING,
935 .help = "IP address of the built-in SMB server",
938 .type = QEMU_OPT_STRING,
939 .help = "guest port number to forward incoming TCP or UDP connections",
942 .type = QEMU_OPT_STRING,
943 .help = "IP address and port to forward guest TCP connections",
945 { /* end of list */ }
950 .init = net_init_tap,
952 NET_COMMON_PARAMS_DESC,
955 .type = QEMU_OPT_STRING,
956 .help = "interface name",
961 .type = QEMU_OPT_STRING,
962 .help = "file descriptor of an already opened tap",
965 .type = QEMU_OPT_STRING,
966 .help = "script to initialize the interface",
968 .name = "downscript",
969 .type = QEMU_OPT_STRING,
970 .help = "script to shut down the interface",
973 .type = QEMU_OPT_SIZE,
974 .help = "send buffer limit"
977 .type = QEMU_OPT_BOOL,
978 .help = "enable the IFF_VNET_HDR flag on the tap interface"
981 .type = QEMU_OPT_BOOL,
982 .help = "enable vhost-net network accelerator",
985 .type = QEMU_OPT_STRING,
986 .help = "file descriptor of an already opened vhost net device",
989 { /* end of list */ }
993 .init = net_init_socket,
995 NET_COMMON_PARAMS_DESC,
998 .type = QEMU_OPT_STRING,
999 .help = "file descriptor of an already opened socket",
1002 .type = QEMU_OPT_STRING,
1003 .help = "port number, and optional hostname, to listen on",
1006 .type = QEMU_OPT_STRING,
1007 .help = "port number, and optional hostname, to connect to",
1010 .type = QEMU_OPT_STRING,
1011 .help = "UDP multicast address and port number",
1013 { /* end of list */ }
1018 .init = net_init_vde,
1020 NET_COMMON_PARAMS_DESC,
1023 .type = QEMU_OPT_STRING,
1024 .help = "socket path",
1027 .type = QEMU_OPT_NUMBER,
1028 .help = "port number",
1031 .type = QEMU_OPT_STRING,
1032 .help = "group owner of socket",
1035 .type = QEMU_OPT_NUMBER,
1036 .help = "permissions for socket",
1038 { /* end of list */ }
1043 .init = net_init_dump,
1045 NET_COMMON_PARAMS_DESC,
1048 .type = QEMU_OPT_SIZE,
1049 .help = "per-packet size limit (64k default)",
1052 .type = QEMU_OPT_STRING,
1053 .help = "dump file path (default is qemu-vlan0.pcap)",
1055 { /* end of list */ }
1058 { /* end of list */ }
1061 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
1067 type = qemu_opt_get(opts, "type");
1071 error_report("No type specified for -net");
1076 error_report("No type specified for -netdev");
1080 if (strcmp(type, "tap") != 0 &&
1082 strcmp(type, "user") != 0 &&
1085 strcmp(type, "vde") != 0 &&
1087 strcmp(type, "socket") != 0) {
1088 error_report("The '%s' network backend type is not valid with -netdev",
1093 if (qemu_opt_get(opts, "vlan")) {
1094 error_report("The 'vlan' parameter is not valid with -netdev");
1097 if (qemu_opt_get(opts, "name")) {
1098 error_report("The 'name' parameter is not valid with -netdev");
1101 if (!qemu_opts_id(opts)) {
1102 error_report("The id= parameter is required with -netdev");
1107 name = qemu_opts_id(opts);
1109 name = qemu_opt_get(opts, "name");
1112 for (i = 0; net_client_types[i].type != NULL; i++) {
1113 if (!strcmp(net_client_types[i].type, type)) {
1114 VLANState *vlan = NULL;
1116 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1120 /* Do not add to a vlan if it's a -netdev or a nic with a
1121 * netdev= parameter. */
1123 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1124 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1127 if (net_client_types[i].init) {
1128 return net_client_types[i].init(opts, mon, name, vlan);
1135 error_report("Invalid -net type '%s'", type);
1139 static int net_host_check_device(const char *device)
1142 const char *valid_param_list[] = { "tap", "socket", "dump"
1150 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1151 if (!strncmp(valid_param_list[i], device,
1152 strlen(valid_param_list[i])))
1159 void net_host_device_add(Monitor *mon, const QDict *qdict)
1161 const char *device = qdict_get_str(qdict, "device");
1162 const char *opts_str = qdict_get_try_str(qdict, "opts");
1165 if (!net_host_check_device(device)) {
1166 monitor_printf(mon, "invalid host network device %s\n", device);
1170 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0);
1172 monitor_printf(mon, "parsing network options '%s' failed\n",
1173 opts_str ? opts_str : "");
1177 qemu_opt_set(opts, "type", device);
1179 if (net_client_init(mon, opts, 0) < 0) {
1180 monitor_printf(mon, "adding host network device %s failed\n", device);
1184 void net_host_device_remove(Monitor *mon, const QDict *qdict)
1186 VLANClientState *vc;
1187 int vlan_id = qdict_get_int(qdict, "vlan_id");
1188 const char *device = qdict_get_str(qdict, "device");
1190 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1194 if (!net_host_check_device(vc->model)) {
1195 monitor_printf(mon, "invalid host network device %s\n", device);
1198 qemu_del_vlan_client(vc);
1201 void net_set_boot_mask(int net_boot_mask)
1205 /* Only the first four NICs may be bootable */
1206 net_boot_mask = net_boot_mask & 0xF;
1208 for (i = 0; i < nb_nics; i++) {
1209 if (net_boot_mask & (1 << i)) {
1210 net_boot_mask &= ~(1 << i);
1214 if (net_boot_mask) {
1215 fprintf(stderr, "Cannot boot from non-existent NIC\n");
1220 void do_info_network(Monitor *mon)
1223 VLANClientState *vc;
1225 QTAILQ_FOREACH(vlan, &vlans, next) {
1226 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1228 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1229 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
1232 monitor_printf(mon, "Devices not on any VLAN:\n");
1233 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1234 monitor_printf(mon, " %s: %s", vc->name, vc->info_str);
1236 monitor_printf(mon, " peer=%s", vc->peer->name);
1238 monitor_printf(mon, "\n");
1242 void do_set_link(Monitor *mon, const QDict *qdict)
1245 VLANClientState *vc = NULL;
1246 const char *name = qdict_get_str(qdict, "name");
1247 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
1249 QTAILQ_FOREACH(vlan, &vlans, next) {
1250 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1251 if (strcmp(vc->name, name) == 0) {
1256 vc = qemu_find_netdev(name);
1260 monitor_printf(mon, "could not find network device '%s'\n", name);
1264 if (strcmp(up_or_down, "up") == 0)
1266 else if (strcmp(up_or_down, "down") == 0)
1269 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
1270 "valid\n", up_or_down);
1272 if (vc->info->link_status_changed) {
1273 vc->info->link_status_changed(vc);
1277 void net_cleanup(void)
1280 VLANClientState *vc, *next_vc;
1282 QTAILQ_FOREACH(vlan, &vlans, next) {
1283 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1284 qemu_del_vlan_client(vc);
1288 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1289 qemu_del_vlan_client(vc);
1293 void net_check_clients(void)
1296 VLANClientState *vc;
1297 int has_nic = 0, has_host_dev = 0;
1299 QTAILQ_FOREACH(vlan, &vlans, next) {
1300 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1301 switch (vc->info->type) {
1302 case NET_CLIENT_TYPE_NIC:
1305 case NET_CLIENT_TYPE_SLIRP:
1306 case NET_CLIENT_TYPE_TAP:
1307 case NET_CLIENT_TYPE_SOCKET:
1308 case NET_CLIENT_TYPE_VDE:
1314 if (has_host_dev && !has_nic)
1315 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1316 if (has_nic && !has_host_dev)
1318 "Warning: vlan %d is not connected to host network\n",
1321 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1323 fprintf(stderr, "Warning: %s %s has no peer\n",
1324 vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
1330 static int net_init_client(QemuOpts *opts, void *dummy)
1332 if (net_client_init(NULL, opts, 0) < 0)
1337 static int net_init_netdev(QemuOpts *opts, void *dummy)
1339 return net_client_init(NULL, opts, 1);
1342 int net_init_clients(void)
1345 /* if no clients, we use a default config */
1346 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
1348 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
1352 QTAILQ_INIT(&vlans);
1353 QTAILQ_INIT(&non_vlan_clients);
1355 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
1358 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
1365 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1367 #if defined(CONFIG_SLIRP)
1369 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1374 if (!qemu_opts_parse(opts_list, optarg, 1)) {