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
24 #include "config-host.h"
29 #include "net/slirp.h"
33 #include "monitor/monitor.h"
34 #include "qemu-common.h"
35 #include "qemu/sockets.h"
36 #include "qemu/config-file.h"
37 #include "qmp-commands.h"
40 #include "qemu/main-loop.h"
41 #include "qapi-visit.h"
42 #include "qapi/opts-visitor.h"
43 #include "qapi/dealloc-visitor.h"
44 #include "sysemu/sysemu.h"
46 /* Net bridge is currently not supported for W32. */
48 # define CONFIG_NET_BRIDGE
51 static VMChangeStateEntry *net_change_state_entry;
52 static QTAILQ_HEAD(, NetClientState) net_clients;
54 const char *host_net_devices[] = {
58 #ifdef CONFIG_NET_BRIDGE
73 /***********************************************************/
74 /* network device redirectors */
76 #if defined(DEBUG_NET)
77 static void hex_dump(FILE *f, const uint8_t *buf, int size)
81 for(i=0;i<size;i+=16) {
85 fprintf(f, "%08x ", i);
88 fprintf(f, " %02x", buf[i+j]);
95 if (c < ' ' || c > '~')
104 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
115 if (len > buf_size - 1)
124 int parse_host_port(struct sockaddr_in *saddr, const char *str)
132 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
134 saddr->sin_family = AF_INET;
135 if (buf[0] == '\0') {
136 saddr->sin_addr.s_addr = 0;
138 if (qemu_isdigit(buf[0])) {
139 if (!inet_aton(buf, &saddr->sin_addr))
142 if ((he = gethostbyname(buf)) == NULL)
144 saddr->sin_addr = *(struct in_addr *)he->h_addr;
147 port = strtol(p, (char **)&r, 0);
150 saddr->sin_port = htons(port);
154 char *qemu_mac_strdup_printf(const uint8_t *macaddr)
156 return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
157 macaddr[0], macaddr[1], macaddr[2],
158 macaddr[3], macaddr[4], macaddr[5]);
161 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
163 snprintf(nc->info_str, sizeof(nc->info_str),
164 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
166 macaddr[0], macaddr[1], macaddr[2],
167 macaddr[3], macaddr[4], macaddr[5]);
170 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
172 static int index = 0;
173 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
175 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
177 macaddr->a[0] = 0x52;
178 macaddr->a[1] = 0x54;
179 macaddr->a[2] = 0x00;
180 macaddr->a[3] = 0x12;
181 macaddr->a[4] = 0x34;
182 macaddr->a[5] = 0x56 + index++;
186 * Generate a name for net client
188 * Only net clients created with the legacy -net option and NICs need this.
190 static char *assign_name(NetClientState *nc1, const char *model)
195 QTAILQ_FOREACH(nc, &net_clients, next) {
199 if (strcmp(nc->model, model) == 0) {
204 return g_strdup_printf("%s.%d", model, id);
207 static void qemu_net_client_destructor(NetClientState *nc)
212 static void qemu_net_client_setup(NetClientState *nc,
214 NetClientState *peer,
217 NetClientDestructor *destructor)
220 nc->model = g_strdup(model);
222 nc->name = g_strdup(name);
224 nc->name = assign_name(nc, model);
232 QTAILQ_INSERT_TAIL(&net_clients, nc, next);
234 nc->incoming_queue = qemu_new_net_queue(nc);
235 nc->destructor = destructor;
238 NetClientState *qemu_new_net_client(NetClientInfo *info,
239 NetClientState *peer,
245 assert(info->size >= sizeof(NetClientState));
247 nc = g_malloc0(info->size);
248 qemu_net_client_setup(nc, info, peer, model, name,
249 qemu_net_client_destructor);
254 NICState *qemu_new_nic(NetClientInfo *info,
260 NetClientState **peers = conf->peers.ncs;
262 int i, queues = MAX(1, conf->peers.queues);
264 assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
265 assert(info->size >= sizeof(NICState));
267 nic = g_malloc0(info->size + sizeof(NetClientState) * queues);
268 nic->ncs = (void *)nic + info->size;
270 nic->opaque = opaque;
272 for (i = 0; i < queues; i++) {
273 qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name,
275 nic->ncs[i].queue_index = i;
281 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index)
283 return nic->ncs + queue_index;
286 NetClientState *qemu_get_queue(NICState *nic)
288 return qemu_get_subqueue(nic, 0);
291 NICState *qemu_get_nic(NetClientState *nc)
293 NetClientState *nc0 = nc - nc->queue_index;
295 return (NICState *)((void *)nc0 - nc->info->size);
298 void *qemu_get_nic_opaque(NetClientState *nc)
300 NICState *nic = qemu_get_nic(nc);
305 static void qemu_cleanup_net_client(NetClientState *nc)
307 QTAILQ_REMOVE(&net_clients, nc, next);
309 if (nc->info->cleanup) {
310 nc->info->cleanup(nc);
314 static void qemu_free_net_client(NetClientState *nc)
316 if (nc->incoming_queue) {
317 qemu_del_net_queue(nc->incoming_queue);
320 nc->peer->peer = NULL;
324 if (nc->destructor) {
329 void qemu_del_net_client(NetClientState *nc)
331 NetClientState *ncs[MAX_QUEUE_NUM];
334 assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC);
336 /* If the NetClientState belongs to a multiqueue backend, we will change all
337 * other NetClientStates also.
339 queues = qemu_find_net_clients_except(nc->name, ncs,
340 NET_CLIENT_OPTIONS_KIND_NIC,
344 /* If there is a peer NIC, delete and cleanup client, but do not free. */
345 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
346 NICState *nic = qemu_get_nic(nc->peer);
347 if (nic->peer_deleted) {
350 nic->peer_deleted = true;
352 for (i = 0; i < queues; i++) {
353 ncs[i]->peer->link_down = true;
356 if (nc->peer->info->link_status_changed) {
357 nc->peer->info->link_status_changed(nc->peer);
360 for (i = 0; i < queues; i++) {
361 qemu_cleanup_net_client(ncs[i]);
367 for (i = 0; i < queues; i++) {
368 qemu_cleanup_net_client(ncs[i]);
369 qemu_free_net_client(ncs[i]);
373 void qemu_del_nic(NICState *nic)
375 int i, queues = MAX(nic->conf->peers.queues, 1);
377 /* If this is a peer NIC and peer has already been deleted, free it now. */
378 if (nic->peer_deleted) {
379 for (i = 0; i < queues; i++) {
380 qemu_free_net_client(qemu_get_subqueue(nic, i)->peer);
384 for (i = queues - 1; i >= 0; i--) {
385 NetClientState *nc = qemu_get_subqueue(nic, i);
387 qemu_cleanup_net_client(nc);
388 qemu_free_net_client(nc);
394 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
398 QTAILQ_FOREACH(nc, &net_clients, next) {
399 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
400 if (nc->queue_index == 0) {
401 func(qemu_get_nic(nc), opaque);
407 bool qemu_has_ufo(NetClientState *nc)
409 if (!nc || !nc->info->has_ufo) {
413 return nc->info->has_ufo(nc);
416 bool qemu_has_vnet_hdr(NetClientState *nc)
418 if (!nc || !nc->info->has_vnet_hdr) {
422 return nc->info->has_vnet_hdr(nc);
425 bool qemu_has_vnet_hdr_len(NetClientState *nc, int len)
427 if (!nc || !nc->info->has_vnet_hdr_len) {
431 return nc->info->has_vnet_hdr_len(nc, len);
434 void qemu_using_vnet_hdr(NetClientState *nc, bool enable)
436 if (!nc || !nc->info->using_vnet_hdr) {
440 nc->info->using_vnet_hdr(nc, enable);
443 void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
446 if (!nc || !nc->info->set_offload) {
450 nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo);
453 void qemu_set_vnet_hdr_len(NetClientState *nc, int len)
455 if (!nc || !nc->info->set_vnet_hdr_len) {
459 nc->info->set_vnet_hdr_len(nc, len);
462 int qemu_can_send_packet(NetClientState *sender)
464 int vm_running = runstate_is_running();
474 if (sender->peer->receive_disabled) {
476 } else if (sender->peer->info->can_receive &&
477 !sender->peer->info->can_receive(sender->peer)) {
483 ssize_t qemu_deliver_packet(NetClientState *sender,
489 NetClientState *nc = opaque;
496 if (nc->receive_disabled) {
500 if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
501 ret = nc->info->receive_raw(nc, data, size);
503 ret = nc->info->receive(nc, data, size);
507 nc->receive_disabled = 1;
513 void qemu_purge_queued_packets(NetClientState *nc)
519 qemu_net_queue_purge(nc->peer->incoming_queue, nc);
523 void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge)
525 nc->receive_disabled = 0;
527 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
528 if (net_hub_flush(nc->peer)) {
532 if (qemu_net_queue_flush(nc->incoming_queue)) {
533 /* We emptied the queue successfully, signal to the IO thread to repoll
534 * the file descriptor (for tap, for example).
538 /* Unable to empty the queue, purge remaining packets */
539 qemu_net_queue_purge(nc->incoming_queue, nc);
543 void qemu_flush_queued_packets(NetClientState *nc)
545 qemu_flush_or_purge_queued_packets(nc, false);
548 static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
550 const uint8_t *buf, int size,
551 NetPacketSent *sent_cb)
556 printf("qemu_send_packet_async:\n");
557 hex_dump(stdout, buf, size);
560 if (sender->link_down || !sender->peer) {
564 queue = sender->peer->incoming_queue;
566 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
569 ssize_t qemu_send_packet_async(NetClientState *sender,
570 const uint8_t *buf, int size,
571 NetPacketSent *sent_cb)
573 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
577 void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
579 qemu_send_packet_async(nc, buf, size, NULL);
582 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
584 return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
588 static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
591 uint8_t buffer[NET_BUFSIZE];
594 offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer));
596 return nc->info->receive(nc, buffer, offset);
599 ssize_t qemu_deliver_packet_iov(NetClientState *sender,
601 const struct iovec *iov,
605 NetClientState *nc = opaque;
609 return iov_size(iov, iovcnt);
612 if (nc->receive_disabled) {
616 if (nc->info->receive_iov) {
617 ret = nc->info->receive_iov(nc, iov, iovcnt);
619 ret = nc_sendv_compat(nc, iov, iovcnt);
623 nc->receive_disabled = 1;
629 ssize_t qemu_sendv_packet_async(NetClientState *sender,
630 const struct iovec *iov, int iovcnt,
631 NetPacketSent *sent_cb)
635 if (sender->link_down || !sender->peer) {
636 return iov_size(iov, iovcnt);
639 queue = sender->peer->incoming_queue;
641 return qemu_net_queue_send_iov(queue, sender,
642 QEMU_NET_PACKET_FLAG_NONE,
643 iov, iovcnt, sent_cb);
647 qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
649 return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
652 NetClientState *qemu_find_netdev(const char *id)
656 QTAILQ_FOREACH(nc, &net_clients, next) {
657 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
659 if (!strcmp(nc->name, id)) {
667 int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
668 NetClientOptionsKind type, int max)
673 QTAILQ_FOREACH(nc, &net_clients, next) {
674 if (nc->info->type == type) {
677 if (!id || !strcmp(nc->name, id)) {
688 static int nic_get_free_idx(void)
692 for (index = 0; index < MAX_NICS; index++)
693 if (!nd_table[index].used)
698 int qemu_show_nic_models(const char *arg, const char *const *models)
702 if (!arg || !is_help_option(arg)) {
706 fprintf(stderr, "qemu: Supported NIC models: ");
707 for (i = 0 ; models[i]; i++)
708 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
712 void qemu_check_nic_model(NICInfo *nd, const char *model)
714 const char *models[2];
719 if (qemu_show_nic_models(nd->model, models))
721 if (qemu_find_nic_model(nd, models, model) < 0)
725 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
726 const char *default_model)
731 nd->model = g_strdup(default_model);
733 for (i = 0 ; models[i]; i++) {
734 if (strcmp(nd->model, models[i]) == 0)
738 error_report("Unsupported NIC model: %s", nd->model);
742 static int net_init_nic(const NetClientOptions *opts, const char *name,
743 NetClientState *peer, Error **errp)
747 const NetLegacyNicOptions *nic;
749 assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC);
752 idx = nic_get_free_idx();
753 if (idx == -1 || nb_nics >= MAX_NICS) {
754 error_setg(errp, "too many NICs");
760 memset(nd, 0, sizeof(*nd));
762 if (nic->has_netdev) {
763 nd->netdev = qemu_find_netdev(nic->netdev);
765 error_setg(errp, "netdev '%s' not found", nic->netdev);
772 nd->name = g_strdup(name);
773 if (nic->has_model) {
774 nd->model = g_strdup(nic->model);
777 nd->devaddr = g_strdup(nic->addr);
780 if (nic->has_macaddr &&
781 net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
782 error_setg(errp, "invalid syntax for ethernet address");
785 if (nic->has_macaddr &&
786 is_multicast_ether_addr(nd->macaddr.a)) {
788 "NIC cannot have multicast MAC address (odd 1st byte)");
791 qemu_macaddr_default_if_unset(&nd->macaddr);
793 if (nic->has_vectors) {
794 if (nic->vectors > 0x7ffffff) {
795 error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors);
798 nd->nvectors = nic->vectors;
800 nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
810 static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
811 const NetClientOptions *opts,
813 NetClientState *peer, Error **errp) = {
814 [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic,
816 [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp,
818 [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap,
819 [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
821 [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
824 [NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap,
826 [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
827 #ifdef CONFIG_NET_BRIDGE
828 [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge,
830 [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport,
831 #ifdef CONFIG_VHOST_NET_USED
832 [NET_CLIENT_OPTIONS_KIND_VHOST_USER] = net_init_vhost_user,
835 [NET_CLIENT_OPTIONS_KIND_L2TPV3] = net_init_l2tpv3,
840 static int net_client_init1(const void *object, int is_netdev, Error **errp)
843 const Netdev *netdev;
844 const NetLegacy *net;
846 const NetClientOptions *opts;
851 opts = u.netdev->opts;
854 switch (opts->kind) {
856 case NET_CLIENT_OPTIONS_KIND_USER:
858 case NET_CLIENT_OPTIONS_KIND_TAP:
859 case NET_CLIENT_OPTIONS_KIND_SOCKET:
861 case NET_CLIENT_OPTIONS_KIND_VDE:
864 case NET_CLIENT_OPTIONS_KIND_NETMAP:
866 #ifdef CONFIG_NET_BRIDGE
867 case NET_CLIENT_OPTIONS_KIND_BRIDGE:
869 case NET_CLIENT_OPTIONS_KIND_HUBPORT:
870 #ifdef CONFIG_VHOST_NET_USED
871 case NET_CLIENT_OPTIONS_KIND_VHOST_USER:
874 case NET_CLIENT_OPTIONS_KIND_L2TPV3:
879 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
880 "a netdev backend type");
886 if (opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
887 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
891 /* missing optional values have been initialized to "all bits zero" */
892 name = u.net->has_id ? u.net->id : u.net->name;
895 if (net_client_init_fun[opts->kind]) {
896 NetClientState *peer = NULL;
898 /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
901 (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
902 !opts->nic->has_netdev)) {
903 peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL);
906 if (net_client_init_fun[opts->kind](opts, name, peer, errp) < 0) {
907 /* FIXME drop when all init functions store an Error */
908 if (errp && !*errp) {
909 error_set(errp, QERR_DEVICE_INIT_FAILED,
910 NetClientOptionsKind_lookup[opts->kind]);
919 static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
922 visit_type_Netdev(v, (Netdev **)object, NULL, errp);
924 visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
929 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
936 OptsVisitor *ov = opts_visitor_new(opts);
938 net_visit(opts_get_visitor(ov), is_netdev, &object, &err);
939 opts_visitor_cleanup(ov);
943 ret = net_client_init1(object, is_netdev, &err);
947 QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
949 net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL);
950 qapi_dealloc_visitor_cleanup(dv);
953 error_propagate(errp, err);
958 static int net_host_check_device(const char *device)
961 for (i = 0; host_net_devices[i]; i++) {
962 if (!strncmp(host_net_devices[i], device,
963 strlen(host_net_devices[i]))) {
971 void hmp_host_net_add(Monitor *mon, const QDict *qdict)
973 const char *device = qdict_get_str(qdict, "device");
974 const char *opts_str = qdict_get_try_str(qdict, "opts");
975 Error *local_err = NULL;
978 if (!net_host_check_device(device)) {
979 monitor_printf(mon, "invalid host network device %s\n", device);
983 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
988 qemu_opt_set(opts, "type", device, &error_abort);
990 net_client_init(opts, 0, &local_err);
992 error_report_err(local_err);
993 monitor_printf(mon, "adding host network device %s failed\n", device);
997 void hmp_host_net_remove(Monitor *mon, const QDict *qdict)
1000 int vlan_id = qdict_get_int(qdict, "vlan_id");
1001 const char *device = qdict_get_str(qdict, "device");
1003 nc = net_hub_find_client_by_name(vlan_id, device);
1005 error_report("Host network device '%s' on hub '%d' not found",
1009 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
1010 error_report("invalid host network device '%s'", device);
1014 qemu_del_net_client(nc->peer);
1015 qemu_del_net_client(nc);
1018 void netdev_add(QemuOpts *opts, Error **errp)
1020 net_client_init(opts, 1, errp);
1023 int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret)
1025 Error *local_err = NULL;
1026 QemuOptsList *opts_list;
1029 opts_list = qemu_find_opts_err("netdev", &local_err);
1034 opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
1039 netdev_add(opts, &local_err);
1041 qemu_opts_del(opts);
1048 qerror_report_err(local_err);
1049 error_free(local_err);
1053 void qmp_netdev_del(const char *id, Error **errp)
1058 nc = qemu_find_netdev(id);
1060 error_set(errp, QERR_DEVICE_NOT_FOUND, id);
1064 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
1066 error_setg(errp, "Device '%s' is not a netdev", id);
1070 qemu_del_net_client(nc);
1071 qemu_opts_del(opts);
1074 void print_net_client(Monitor *mon, NetClientState *nc)
1076 monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name,
1078 NetClientOptionsKind_lookup[nc->info->type],
1082 RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
1086 RxFilterInfoList *filter_list = NULL, *last_entry = NULL;
1088 QTAILQ_FOREACH(nc, &net_clients, next) {
1089 RxFilterInfoList *entry;
1092 if (has_name && strcmp(nc->name, name) != 0) {
1096 /* only query rx-filter information of NIC */
1097 if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) {
1099 error_setg(errp, "net client(%s) isn't a NIC", name);
1105 if (nc->info->query_rx_filter) {
1106 info = nc->info->query_rx_filter(nc);
1107 entry = g_malloc0(sizeof(*entry));
1108 entry->value = info;
1111 filter_list = entry;
1113 last_entry->next = entry;
1116 } else if (has_name) {
1117 error_setg(errp, "net client(%s) doesn't support"
1118 " rx-filter querying", name);
1127 if (filter_list == NULL && has_name) {
1128 error_setg(errp, "invalid net client name: %s", name);
1134 void hmp_info_network(Monitor *mon, const QDict *qdict)
1136 NetClientState *nc, *peer;
1137 NetClientOptionsKind type;
1141 QTAILQ_FOREACH(nc, &net_clients, next) {
1143 type = nc->info->type;
1145 /* Skip if already printed in hub info */
1146 if (net_hub_id_for_client(nc, NULL) == 0) {
1150 if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
1151 print_net_client(mon, nc);
1152 } /* else it's a netdev connected to a NIC, printed with the NIC */
1153 if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
1154 monitor_printf(mon, " \\ ");
1155 print_net_client(mon, peer);
1160 void qmp_set_link(const char *name, bool up, Error **errp)
1162 NetClientState *ncs[MAX_QUEUE_NUM];
1166 queues = qemu_find_net_clients_except(name, ncs,
1167 NET_CLIENT_OPTIONS_KIND_MAX,
1171 error_set(errp, QERR_DEVICE_NOT_FOUND, name);
1176 for (i = 0; i < queues; i++) {
1177 ncs[i]->link_down = !up;
1180 if (nc->info->link_status_changed) {
1181 nc->info->link_status_changed(nc);
1185 /* Change peer link only if the peer is NIC and then notify peer.
1186 * If the peer is a HUBPORT or a backend, we do not change the
1189 * This behavior is compatible with qemu vlans where there could be
1190 * multiple clients that can still communicate with each other in
1191 * disconnected mode. For now maintain this compatibility.
1193 if (nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
1194 for (i = 0; i < queues; i++) {
1195 ncs[i]->peer->link_down = !up;
1198 if (nc->peer->info->link_status_changed) {
1199 nc->peer->info->link_status_changed(nc->peer);
1204 static void net_vm_change_state_handler(void *opaque, int running,
1207 /* Complete all queued packets, to guarantee we don't modify
1208 * state later when VM is not running.
1212 NetClientState *tmp;
1214 QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) {
1215 qemu_flush_or_purge_queued_packets(nc, true);
1220 void net_cleanup(void)
1224 /* We may del multiple entries during qemu_del_net_client(),
1225 * so QTAILQ_FOREACH_SAFE() is also not safe here.
1227 while (!QTAILQ_EMPTY(&net_clients)) {
1228 nc = QTAILQ_FIRST(&net_clients);
1229 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
1230 qemu_del_nic(qemu_get_nic(nc));
1232 qemu_del_net_client(nc);
1236 qemu_del_vm_change_state_handler(net_change_state_entry);
1239 void net_check_clients(void)
1244 /* Don't warn about the default network setup that you get if
1245 * no command line -net or -netdev options are specified. There
1246 * are two cases that we would otherwise complain about:
1247 * (1) board doesn't support a NIC but the implicit "-net nic"
1249 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1250 * sets up a nic that isn't connected to anything.
1256 net_hub_check_clients();
1258 QTAILQ_FOREACH(nc, &net_clients, next) {
1260 fprintf(stderr, "Warning: %s %s has no peer\n",
1261 nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
1262 "nic" : "netdev", nc->name);
1266 /* Check that all NICs requested via -net nic actually got created.
1267 * NICs created via -device don't need to be checked here because
1268 * they are always instantiated.
1270 for (i = 0; i < MAX_NICS; i++) {
1271 NICInfo *nd = &nd_table[i];
1272 if (nd->used && !nd->instantiated) {
1273 fprintf(stderr, "Warning: requested NIC (%s, model %s) "
1274 "was not created (not supported by this machine?)\n",
1275 nd->name ? nd->name : "anonymous",
1276 nd->model ? nd->model : "unspecified");
1281 static int net_init_client(QemuOpts *opts, void *dummy)
1283 Error *local_err = NULL;
1285 net_client_init(opts, 0, &local_err);
1287 error_report_err(local_err);
1294 static int net_init_netdev(QemuOpts *opts, void *dummy)
1296 Error *local_err = NULL;
1299 ret = net_client_init(opts, 1, &local_err);
1301 error_report_err(local_err);
1308 int net_init_clients(void)
1310 QemuOptsList *net = qemu_find_opts("net");
1313 /* if no clients, we use a default config */
1314 qemu_opts_set(net, NULL, "type", "nic", &error_abort);
1316 qemu_opts_set(net, NULL, "type", "user", &error_abort);
1320 net_change_state_entry =
1321 qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL);
1323 QTAILQ_INIT(&net_clients);
1325 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
1328 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
1335 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1337 #if defined(CONFIG_SLIRP)
1339 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
1344 if (!qemu_opts_parse(opts_list, optarg, 1)) {
1354 unsigned compute_mcast_idx(const uint8_t *ep)
1361 for (i = 0; i < 6; i++) {
1363 for (j = 0; j < 8; j++) {
1364 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
1368 crc = ((crc ^ POLYNOMIAL) | carry);
1375 QemuOptsList qemu_netdev_opts = {
1377 .implied_opt_name = "type",
1378 .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
1381 * no elements => accept any params
1382 * validation will happen later
1384 { /* end of list */ }
1388 QemuOptsList qemu_net_opts = {
1390 .implied_opt_name = "type",
1391 .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
1394 * no elements => accept any params
1395 * validation will happen later
1397 { /* end of list */ }