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"
39 static QTAILQ_HEAD(, VLANState) vlans;
40 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
44 /***********************************************************/
45 /* network device redirectors */
47 #if defined(DEBUG_NET)
48 static void hex_dump(FILE *f, const uint8_t *buf, int size)
52 for(i=0;i<size;i+=16) {
56 fprintf(f, "%08x ", i);
59 fprintf(f, " %02x", buf[i+j]);
66 if (c < ' ' || c > '~')
75 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
86 if (len > buf_size - 1)
95 int parse_host_src_port(struct sockaddr_in *haddr,
96 struct sockaddr_in *saddr,
97 const char *input_str)
99 char *str = strdup(input_str);
100 char *host_str = str;
102 const char *src_str2;
106 * Chop off any extra arguments at the end of the string which
107 * would start with a comma, then fill in the src port information
108 * if it was provided else use the "any address" and "any port".
110 if ((ptr = strchr(str,',')))
113 if ((src_str = strchr(input_str,'@'))) {
118 if (parse_host_port(haddr, host_str) < 0)
122 if (!src_str || *src_str == '\0')
125 if (parse_host_port(saddr, src_str2) < 0)
136 int parse_host_port(struct sockaddr_in *saddr, const char *str)
144 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
146 saddr->sin_family = AF_INET;
147 if (buf[0] == '\0') {
148 saddr->sin_addr.s_addr = 0;
150 if (qemu_isdigit(buf[0])) {
151 if (!inet_aton(buf, &saddr->sin_addr))
154 if ((he = gethostbyname(buf)) == NULL)
156 saddr->sin_addr = *(struct in_addr *)he->h_addr;
159 port = strtol(p, (char **)&r, 0);
162 saddr->sin_port = htons(port);
166 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
168 snprintf(vc->info_str, sizeof(vc->info_str),
169 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
171 macaddr[0], macaddr[1], macaddr[2],
172 macaddr[3], macaddr[4], macaddr[5]);
175 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
177 static int index = 0;
178 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
180 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
182 macaddr->a[0] = 0x52;
183 macaddr->a[1] = 0x54;
184 macaddr->a[2] = 0x00;
185 macaddr->a[3] = 0x12;
186 macaddr->a[4] = 0x34;
187 macaddr->a[5] = 0x56 + index++;
190 static char *assign_name(VLANClientState *vc1, const char *model)
196 QTAILQ_FOREACH(vlan, &vlans, next) {
199 QTAILQ_FOREACH(vc, &vlan->clients, next) {
200 if (vc != vc1 && strcmp(vc->model, model) == 0) {
206 snprintf(buf, sizeof(buf), "%s.%d", model, id);
208 return qemu_strdup(buf);
211 static ssize_t qemu_deliver_packet(VLANClientState *sender,
216 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
218 const struct iovec *iov,
222 VLANClientState *qemu_new_net_client(NetClientInfo *info,
224 VLANClientState *peer,
230 assert(info->size >= sizeof(VLANClientState));
232 vc = qemu_mallocz(info->size);
235 vc->model = qemu_strdup(model);
237 vc->name = qemu_strdup(name);
239 vc->name = assign_name(vc, model);
245 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
251 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
253 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
254 qemu_deliver_packet_iov,
261 NICState *qemu_new_nic(NetClientInfo *info,
270 assert(info->type == NET_CLIENT_TYPE_NIC);
271 assert(info->size >= sizeof(NICState));
273 nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
275 nic = DO_UPCAST(NICState, nc, nc);
277 nic->opaque = opaque;
282 void qemu_del_vlan_client(VLANClientState *vc)
285 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
287 if (vc->send_queue) {
288 qemu_del_net_queue(vc->send_queue);
290 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
292 vc->peer->peer = NULL;
296 if (vc->info->cleanup) {
297 vc->info->cleanup(vc);
301 qemu_free(vc->model);
306 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
307 const char *client_str)
312 vlan = qemu_find_vlan(vlan_id, 0);
314 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
318 QTAILQ_FOREACH(vc, &vlan->clients, next) {
319 if (!strcmp(vc->name, client_str)) {
324 monitor_printf(mon, "can't find device %s on VLAN %d\n",
325 client_str, vlan_id);
331 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
336 QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
337 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
338 func(DO_UPCAST(NICState, nc, nc), opaque);
342 QTAILQ_FOREACH(vlan, &vlans, next) {
343 QTAILQ_FOREACH(nc, &vlan->clients, next) {
344 if (nc->info->type == NET_CLIENT_TYPE_NIC) {
345 func(DO_UPCAST(NICState, nc, nc), opaque);
351 int qemu_can_send_packet(VLANClientState *sender)
353 VLANState *vlan = sender->vlan;
357 if (sender->peer->receive_disabled) {
359 } else if (sender->peer->info->can_receive &&
360 !sender->peer->info->can_receive(sender->peer)) {
371 QTAILQ_FOREACH(vc, &vlan->clients, next) {
376 /* no can_receive() handler, they can always receive */
377 if (!vc->info->can_receive || vc->info->can_receive(vc)) {
384 static ssize_t qemu_deliver_packet(VLANClientState *sender,
390 VLANClientState *vc = opaque;
397 if (vc->receive_disabled) {
401 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
402 ret = vc->info->receive_raw(vc, data, size);
404 ret = vc->info->receive(vc, data, size);
408 vc->receive_disabled = 1;
414 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
420 VLANState *vlan = opaque;
424 QTAILQ_FOREACH(vc, &vlan->clients, next) {
436 if (vc->receive_disabled) {
441 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
442 len = vc->info->receive_raw(vc, buf, size);
444 len = vc->info->receive(vc, buf, size);
448 vc->receive_disabled = 1;
451 ret = (ret >= 0) ? ret : len;
458 void qemu_purge_queued_packets(VLANClientState *vc)
462 if (!vc->peer && !vc->vlan) {
467 queue = vc->peer->send_queue;
469 queue = vc->vlan->send_queue;
472 qemu_net_queue_purge(queue, vc);
475 void qemu_flush_queued_packets(VLANClientState *vc)
479 vc->receive_disabled = 0;
482 queue = vc->vlan->send_queue;
484 queue = vc->send_queue;
487 qemu_net_queue_flush(queue);
490 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
492 const uint8_t *buf, int size,
493 NetPacketSent *sent_cb)
498 printf("qemu_send_packet_async:\n");
499 hex_dump(stdout, buf, size);
502 if (sender->link_down || (!sender->peer && !sender->vlan)) {
507 queue = sender->peer->send_queue;
509 queue = sender->vlan->send_queue;
512 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
515 ssize_t qemu_send_packet_async(VLANClientState *sender,
516 const uint8_t *buf, int size,
517 NetPacketSent *sent_cb)
519 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
523 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
525 qemu_send_packet_async(vc, buf, size, NULL);
528 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
530 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
534 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
537 uint8_t buffer[4096];
541 for (i = 0; i < iovcnt; i++) {
544 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
545 memcpy(buffer + offset, iov[i].iov_base, len);
549 return vc->info->receive(vc, buffer, offset);
552 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
557 for (i = 0; i < iovcnt; i++)
558 offset += iov[i].iov_len;
562 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
564 const struct iovec *iov,
568 VLANClientState *vc = opaque;
571 return calc_iov_length(iov, iovcnt);
574 if (vc->info->receive_iov) {
575 return vc->info->receive_iov(vc, iov, iovcnt);
577 return vc_sendv_compat(vc, iov, iovcnt);
581 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
583 const struct iovec *iov,
587 VLANState *vlan = opaque;
591 QTAILQ_FOREACH(vc, &vlan->clients, next) {
599 ret = calc_iov_length(iov, iovcnt);
603 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
605 if (vc->info->receive_iov) {
606 len = vc->info->receive_iov(vc, iov, iovcnt);
608 len = vc_sendv_compat(vc, iov, iovcnt);
611 ret = (ret >= 0) ? ret : len;
617 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
618 const struct iovec *iov, int iovcnt,
619 NetPacketSent *sent_cb)
623 if (sender->link_down || (!sender->peer && !sender->vlan)) {
624 return calc_iov_length(iov, iovcnt);
628 queue = sender->peer->send_queue;
630 queue = sender->vlan->send_queue;
633 return qemu_net_queue_send_iov(queue, sender,
634 QEMU_NET_PACKET_FLAG_NONE,
635 iov, iovcnt, sent_cb);
639 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
641 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
644 /* find or alloc a new VLAN */
645 VLANState *qemu_find_vlan(int id, int allocate)
649 QTAILQ_FOREACH(vlan, &vlans, next) {
650 if (vlan->id == id) {
659 vlan = qemu_mallocz(sizeof(VLANState));
661 QTAILQ_INIT(&vlan->clients);
663 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
664 qemu_vlan_deliver_packet_iov,
667 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
672 VLANClientState *qemu_find_netdev(const char *id)
676 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
677 if (!strcmp(vc->name, id)) {
685 static int nic_get_free_idx(void)
689 for (index = 0; index < MAX_NICS; index++)
690 if (!nd_table[index].used)
695 int qemu_show_nic_models(const char *arg, const char *const *models)
699 if (!arg || strcmp(arg, "?"))
702 fprintf(stderr, "qemu: Supported NIC models: ");
703 for (i = 0 ; models[i]; i++)
704 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
708 void qemu_check_nic_model(NICInfo *nd, const char *model)
710 const char *models[2];
715 if (qemu_show_nic_models(nd->model, models))
717 if (qemu_find_nic_model(nd, models, model) < 0)
721 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
722 const char *default_model)
727 nd->model = qemu_strdup(default_model);
729 for (i = 0 ; models[i]; i++) {
730 if (strcmp(nd->model, models[i]) == 0)
734 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
738 int net_handle_fd_param(Monitor *mon, const char *param)
740 if (!qemu_isdigit(param[0])) {
743 fd = monitor_get_fd(mon, param);
745 qemu_error("No file descriptor named %s found", param);
751 return strtol(param, NULL, 0);
755 static int net_init_nic(QemuOpts *opts,
764 idx = nic_get_free_idx();
765 if (idx == -1 || nb_nics >= MAX_NICS) {
766 qemu_error("Too Many NICs\n");
772 memset(nd, 0, sizeof(*nd));
774 if ((netdev = qemu_opt_get(opts, "netdev"))) {
775 nd->netdev = qemu_find_netdev(netdev);
777 qemu_error("netdev '%s' not found\n", netdev);
785 nd->name = qemu_strdup(name);
787 if (qemu_opt_get(opts, "model")) {
788 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
790 if (qemu_opt_get(opts, "addr")) {
791 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
794 nd->macaddr[0] = 0x52;
795 nd->macaddr[1] = 0x54;
796 nd->macaddr[2] = 0x00;
797 nd->macaddr[3] = 0x12;
798 nd->macaddr[4] = 0x34;
799 nd->macaddr[5] = 0x56 + idx;
801 if (qemu_opt_get(opts, "macaddr") &&
802 net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
803 qemu_error("invalid syntax for ethernet address\n");
807 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
808 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
809 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
810 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
816 nd->vlan->nb_guest_devs++;
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
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 { /* end of list */ }
985 .init = net_init_socket,
987 NET_COMMON_PARAMS_DESC,
990 .type = QEMU_OPT_STRING,
991 .help = "file descriptor of an already opened socket",
994 .type = QEMU_OPT_STRING,
995 .help = "port number, and optional hostname, to listen on",
998 .type = QEMU_OPT_STRING,
999 .help = "port number, and optional hostname, to connect to",
1002 .type = QEMU_OPT_STRING,
1003 .help = "UDP multicast address and port number",
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");
1063 qemu_error("No type specified for -net\n");
1068 qemu_error("No type specified for -netdev\n");
1072 if (strcmp(type, "tap") != 0 &&
1074 strcmp(type, "user") != 0 &&
1077 strcmp(type, "vde") != 0 &&
1079 strcmp(type, "socket") != 0) {
1080 qemu_error("The '%s' network backend type is not valid with -netdev\n",
1085 if (qemu_opt_get(opts, "vlan")) {
1086 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
1089 if (qemu_opt_get(opts, "name")) {
1090 qemu_error("The 'name' parameter is not valid with -netdev\n");
1093 if (!qemu_opts_id(opts)) {
1094 qemu_error("The id= parameter is required with -netdev\n");
1099 name = qemu_opts_id(opts);
1101 name = qemu_opt_get(opts, "name");
1104 for (i = 0; net_client_types[i].type != NULL; i++) {
1105 if (!strcmp(net_client_types[i].type, type)) {
1106 VLANState *vlan = NULL;
1108 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
1112 /* Do not add to a vlan if it's a -netdev or a nic with a
1113 * netdev= parameter. */
1115 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
1116 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
1119 if (net_client_types[i].init) {
1120 return net_client_types[i].init(opts, mon, name, vlan);
1127 qemu_error("Invalid -net type '%s'\n", type);
1131 void net_client_uninit(NICInfo *nd)
1134 nd->vlan->nb_guest_devs--;
1138 qemu_free(nd->model);
1139 qemu_free(nd->name);
1140 qemu_free(nd->devaddr);
1145 static int net_host_check_device(const char *device)
1148 const char *valid_param_list[] = { "tap", "socket", "dump"
1156 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
1157 if (!strncmp(valid_param_list[i], device,
1158 strlen(valid_param_list[i])))
1165 void net_host_device_add(Monitor *mon, const QDict *qdict)
1167 const char *device = qdict_get_str(qdict, "device");
1168 const char *opts_str = qdict_get_try_str(qdict, "opts");
1171 if (!net_host_check_device(device)) {
1172 monitor_printf(mon, "invalid host network device %s\n", device);
1176 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
1178 monitor_printf(mon, "parsing network options '%s' failed\n",
1179 opts_str ? opts_str : "");
1183 qemu_opt_set(opts, "type", device);
1185 if (net_client_init(mon, opts, 0) < 0) {
1186 monitor_printf(mon, "adding host network device %s failed\n", device);
1190 void net_host_device_remove(Monitor *mon, const QDict *qdict)
1192 VLANClientState *vc;
1193 int vlan_id = qdict_get_int(qdict, "vlan_id");
1194 const char *device = qdict_get_str(qdict, "device");
1196 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
1200 if (!net_host_check_device(vc->model)) {
1201 monitor_printf(mon, "invalid host network device %s\n", device);
1204 qemu_del_vlan_client(vc);
1207 void net_set_boot_mask(int net_boot_mask)
1211 /* Only the first four NICs may be bootable */
1212 net_boot_mask = net_boot_mask & 0xF;
1214 for (i = 0; i < nb_nics; i++) {
1215 if (net_boot_mask & (1 << i)) {
1216 nd_table[i].bootable = 1;
1217 net_boot_mask &= ~(1 << i);
1221 if (net_boot_mask) {
1222 fprintf(stderr, "Cannot boot from non-existent NIC\n");
1227 void do_info_network(Monitor *mon)
1231 QTAILQ_FOREACH(vlan, &vlans, next) {
1232 VLANClientState *vc;
1234 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
1236 QTAILQ_FOREACH(vc, &vlan->clients, next) {
1237 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
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) {
1259 monitor_printf(mon, "could not find network device '%s'\n", name);
1263 if (strcmp(up_or_down, "up") == 0)
1265 else if (strcmp(up_or_down, "down") == 0)
1268 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
1269 "valid\n", up_or_down);
1271 if (vc->info->link_status_changed) {
1272 vc->info->link_status_changed(vc);
1276 void net_cleanup(void)
1279 VLANClientState *vc, *next_vc;
1281 QTAILQ_FOREACH(vlan, &vlans, next) {
1282 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
1283 qemu_del_vlan_client(vc);
1287 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
1288 qemu_del_vlan_client(vc);
1292 static void net_check_clients(void)
1296 QTAILQ_FOREACH(vlan, &vlans, next) {
1297 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
1299 if (vlan->nb_guest_devs == 0)
1300 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1301 if (vlan->nb_host_devs == 0)
1303 "Warning: vlan %d is not connected to host network\n",
1308 static int net_init_client(QemuOpts *opts, void *dummy)
1310 if (net_client_init(NULL, opts, 0) < 0)
1315 static int net_init_netdev(QemuOpts *opts, void *dummy)
1317 return net_client_init(NULL, opts, 1);
1320 int net_init_clients(void)
1323 /* if no clients, we use a default config */
1324 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
1326 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
1330 QTAILQ_INIT(&vlans);
1331 QTAILQ_INIT(&non_vlan_clients);
1333 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
1336 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
1340 net_check_clients();
1345 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1347 #if defined(CONFIG_SLIRP)
1349 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1354 if (!qemu_opts_parse(opts_list, optarg, "type")) {