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"
38 #include "qmp-commands.h"
41 #include "qapi-visit.h"
42 #include "qapi/opts-visitor.h"
43 #include "qapi/qapi-dealloc-visitor.h"
45 /* Net bridge is currently not supported for W32. */
47 # define CONFIG_NET_BRIDGE
50 static QTAILQ_HEAD(, VLANState
) vlans
;
51 static QTAILQ_HEAD(, VLANClientState
) non_vlan_clients
;
55 /***********************************************************/
56 /* network device redirectors */
58 #if defined(DEBUG_NET)
59 static void hex_dump(FILE *f
, const uint8_t *buf
, int size
)
63 for(i
=0;i
<size
;i
+=16) {
67 fprintf(f
, "%08x ", i
);
70 fprintf(f
, " %02x", buf
[i
+j
]);
77 if (c
< ' ' || c
> '~')
86 static int get_str_sep(char *buf
, int buf_size
, const char **pp
, int sep
)
97 if (len
> buf_size
- 1)
106 int parse_host_port(struct sockaddr_in
*saddr
, const char *str
)
114 if (get_str_sep(buf
, sizeof(buf
), &p
, ':') < 0)
116 saddr
->sin_family
= AF_INET
;
117 if (buf
[0] == '\0') {
118 saddr
->sin_addr
.s_addr
= 0;
120 if (qemu_isdigit(buf
[0])) {
121 if (!inet_aton(buf
, &saddr
->sin_addr
))
124 if ((he
= gethostbyname(buf
)) == NULL
)
126 saddr
->sin_addr
= *(struct in_addr
*)he
->h_addr
;
129 port
= strtol(p
, (char **)&r
, 0);
132 saddr
->sin_port
= htons(port
);
136 void qemu_format_nic_info_str(VLANClientState
*vc
, uint8_t macaddr
[6])
138 snprintf(vc
->info_str
, sizeof(vc
->info_str
),
139 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
141 macaddr
[0], macaddr
[1], macaddr
[2],
142 macaddr
[3], macaddr
[4], macaddr
[5]);
145 void qemu_macaddr_default_if_unset(MACAddr
*macaddr
)
147 static int index
= 0;
148 static const MACAddr zero
= { .a
= { 0,0,0,0,0,0 } };
150 if (memcmp(macaddr
, &zero
, sizeof(zero
)) != 0)
152 macaddr
->a
[0] = 0x52;
153 macaddr
->a
[1] = 0x54;
154 macaddr
->a
[2] = 0x00;
155 macaddr
->a
[3] = 0x12;
156 macaddr
->a
[4] = 0x34;
157 macaddr
->a
[5] = 0x56 + index
++;
161 * Generate a name for net client
163 * Only net clients created with the legacy -net option need this. Naming is
164 * mandatory for net clients created with -netdev.
166 static char *assign_name(VLANClientState
*vc1
, const char *model
)
172 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
176 /* For compatibility only bump id for net clients on a vlan */
177 if (strcmp(vc
->model
, model
) == 0 &&
178 net_hub_id_for_client(vc
, NULL
) == 0) {
183 snprintf(buf
, sizeof(buf
), "%s.%d", model
, id
);
185 return g_strdup(buf
);
188 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
193 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
195 const struct iovec
*iov
,
199 VLANClientState
*qemu_new_net_client(NetClientInfo
*info
,
201 VLANClientState
*peer
,
207 assert(info
->size
>= sizeof(VLANClientState
));
209 vc
= g_malloc0(info
->size
);
212 vc
->model
= g_strdup(model
);
214 vc
->name
= g_strdup(name
);
216 vc
->name
= assign_name(vc
, model
);
222 QTAILQ_INSERT_TAIL(&vc
->vlan
->clients
, vc
, next
);
229 QTAILQ_INSERT_TAIL(&non_vlan_clients
, vc
, next
);
231 vc
->send_queue
= qemu_new_net_queue(qemu_deliver_packet
,
232 qemu_deliver_packet_iov
,
239 NICState
*qemu_new_nic(NetClientInfo
*info
,
248 assert(info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
);
249 assert(info
->size
>= sizeof(NICState
));
251 nc
= qemu_new_net_client(info
, conf
->vlan
, conf
->peer
, model
, name
);
253 nic
= DO_UPCAST(NICState
, nc
, nc
);
255 nic
->opaque
= opaque
;
260 static void qemu_cleanup_vlan_client(VLANClientState
*vc
)
263 QTAILQ_REMOVE(&vc
->vlan
->clients
, vc
, next
);
265 QTAILQ_REMOVE(&non_vlan_clients
, vc
, next
);
268 if (vc
->info
->cleanup
) {
269 vc
->info
->cleanup(vc
);
273 static void qemu_free_vlan_client(VLANClientState
*vc
)
276 if (vc
->send_queue
) {
277 qemu_del_net_queue(vc
->send_queue
);
280 vc
->peer
->peer
= NULL
;
288 void qemu_del_vlan_client(VLANClientState
*vc
)
290 /* If there is a peer NIC, delete and cleanup client, but do not free. */
291 if (!vc
->vlan
&& vc
->peer
&& vc
->peer
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
292 NICState
*nic
= DO_UPCAST(NICState
, nc
, vc
->peer
);
293 if (nic
->peer_deleted
) {
296 nic
->peer_deleted
= true;
297 /* Let NIC know peer is gone. */
298 vc
->peer
->link_down
= true;
299 if (vc
->peer
->info
->link_status_changed
) {
300 vc
->peer
->info
->link_status_changed(vc
->peer
);
302 qemu_cleanup_vlan_client(vc
);
306 /* If this is a peer NIC and peer has already been deleted, free it now. */
307 if (!vc
->vlan
&& vc
->peer
&& vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
308 NICState
*nic
= DO_UPCAST(NICState
, nc
, vc
);
309 if (nic
->peer_deleted
) {
310 qemu_free_vlan_client(vc
->peer
);
314 qemu_cleanup_vlan_client(vc
);
315 qemu_free_vlan_client(vc
);
319 qemu_find_vlan_client_by_name(Monitor
*mon
, int vlan_id
,
320 const char *client_str
)
325 vlan
= qemu_find_vlan(vlan_id
, 0);
327 monitor_printf(mon
, "unknown VLAN %d\n", vlan_id
);
331 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
332 if (!strcmp(vc
->name
, client_str
)) {
337 monitor_printf(mon
, "can't find device %s on VLAN %d\n",
338 client_str
, vlan_id
);
344 void qemu_foreach_nic(qemu_nic_foreach func
, void *opaque
)
349 QTAILQ_FOREACH(nc
, &non_vlan_clients
, next
) {
350 if (nc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
351 func(DO_UPCAST(NICState
, nc
, nc
), opaque
);
355 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
356 QTAILQ_FOREACH(nc
, &vlan
->clients
, next
) {
357 if (nc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
358 func(DO_UPCAST(NICState
, nc
, nc
), opaque
);
364 int qemu_can_send_packet(VLANClientState
*sender
)
366 VLANState
*vlan
= sender
->vlan
;
370 if (sender
->peer
->receive_disabled
) {
372 } else if (sender
->peer
->info
->can_receive
&&
373 !sender
->peer
->info
->can_receive(sender
->peer
)) {
384 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
389 /* no can_receive() handler, they can always receive */
390 if (vc
->info
->can_receive
&& !vc
->info
->can_receive(vc
)) {
397 static ssize_t
qemu_deliver_packet(VLANClientState
*sender
,
403 VLANClientState
*vc
= opaque
;
410 if (vc
->receive_disabled
) {
414 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->info
->receive_raw
) {
415 ret
= vc
->info
->receive_raw(vc
, data
, size
);
417 ret
= vc
->info
->receive(vc
, data
, size
);
421 vc
->receive_disabled
= 1;
427 static ssize_t
qemu_vlan_deliver_packet(VLANClientState
*sender
,
433 VLANState
*vlan
= opaque
;
437 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
449 if (vc
->receive_disabled
) {
454 if (flags
& QEMU_NET_PACKET_FLAG_RAW
&& vc
->info
->receive_raw
) {
455 len
= vc
->info
->receive_raw(vc
, buf
, size
);
457 len
= vc
->info
->receive(vc
, buf
, size
);
461 vc
->receive_disabled
= 1;
464 ret
= (ret
>= 0) ? ret
: len
;
471 void qemu_purge_queued_packets(VLANClientState
*vc
)
475 if (!vc
->peer
&& !vc
->vlan
) {
480 queue
= vc
->peer
->send_queue
;
482 queue
= vc
->vlan
->send_queue
;
485 qemu_net_queue_purge(queue
, vc
);
488 void qemu_flush_queued_packets(VLANClientState
*vc
)
492 vc
->receive_disabled
= 0;
495 queue
= vc
->vlan
->send_queue
;
497 queue
= vc
->send_queue
;
500 qemu_net_queue_flush(queue
);
503 static ssize_t
qemu_send_packet_async_with_flags(VLANClientState
*sender
,
505 const uint8_t *buf
, int size
,
506 NetPacketSent
*sent_cb
)
511 printf("qemu_send_packet_async:\n");
512 hex_dump(stdout
, buf
, size
);
515 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
520 queue
= sender
->peer
->send_queue
;
522 queue
= sender
->vlan
->send_queue
;
525 return qemu_net_queue_send(queue
, sender
, flags
, buf
, size
, sent_cb
);
528 ssize_t
qemu_send_packet_async(VLANClientState
*sender
,
529 const uint8_t *buf
, int size
,
530 NetPacketSent
*sent_cb
)
532 return qemu_send_packet_async_with_flags(sender
, QEMU_NET_PACKET_FLAG_NONE
,
536 void qemu_send_packet(VLANClientState
*vc
, const uint8_t *buf
, int size
)
538 qemu_send_packet_async(vc
, buf
, size
, NULL
);
541 ssize_t
qemu_send_packet_raw(VLANClientState
*vc
, const uint8_t *buf
, int size
)
543 return qemu_send_packet_async_with_flags(vc
, QEMU_NET_PACKET_FLAG_RAW
,
547 static ssize_t
vc_sendv_compat(VLANClientState
*vc
, const struct iovec
*iov
,
550 uint8_t buffer
[4096];
553 offset
= iov_to_buf(iov
, iovcnt
, 0, buffer
, sizeof(buffer
));
555 return vc
->info
->receive(vc
, buffer
, offset
);
558 static ssize_t
qemu_deliver_packet_iov(VLANClientState
*sender
,
560 const struct iovec
*iov
,
564 VLANClientState
*vc
= opaque
;
567 return iov_size(iov
, iovcnt
);
570 if (vc
->info
->receive_iov
) {
571 return vc
->info
->receive_iov(vc
, iov
, iovcnt
);
573 return vc_sendv_compat(vc
, iov
, iovcnt
);
577 static ssize_t
qemu_vlan_deliver_packet_iov(VLANClientState
*sender
,
579 const struct iovec
*iov
,
583 VLANState
*vlan
= opaque
;
587 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
595 ret
= iov_size(iov
, iovcnt
);
599 assert(!(flags
& QEMU_NET_PACKET_FLAG_RAW
));
601 if (vc
->info
->receive_iov
) {
602 len
= vc
->info
->receive_iov(vc
, iov
, iovcnt
);
604 len
= vc_sendv_compat(vc
, iov
, iovcnt
);
607 ret
= (ret
>= 0) ? ret
: len
;
613 ssize_t
qemu_sendv_packet_async(VLANClientState
*sender
,
614 const struct iovec
*iov
, int iovcnt
,
615 NetPacketSent
*sent_cb
)
619 if (sender
->link_down
|| (!sender
->peer
&& !sender
->vlan
)) {
620 return iov_size(iov
, iovcnt
);
624 queue
= sender
->peer
->send_queue
;
626 queue
= sender
->vlan
->send_queue
;
629 return qemu_net_queue_send_iov(queue
, sender
,
630 QEMU_NET_PACKET_FLAG_NONE
,
631 iov
, iovcnt
, sent_cb
);
635 qemu_sendv_packet(VLANClientState
*vc
, const struct iovec
*iov
, int iovcnt
)
637 return qemu_sendv_packet_async(vc
, iov
, iovcnt
, NULL
);
640 /* find or alloc a new VLAN */
641 VLANState
*qemu_find_vlan(int id
, int allocate
)
645 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
646 if (vlan
->id
== id
) {
655 vlan
= g_malloc0(sizeof(VLANState
));
657 QTAILQ_INIT(&vlan
->clients
);
659 vlan
->send_queue
= qemu_new_net_queue(qemu_vlan_deliver_packet
,
660 qemu_vlan_deliver_packet_iov
,
663 QTAILQ_INSERT_TAIL(&vlans
, vlan
, next
);
668 VLANClientState
*qemu_find_netdev(const char *id
)
672 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
673 if (vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
)
675 if (!strcmp(vc
->name
, id
)) {
683 static int nic_get_free_idx(void)
687 for (index
= 0; index
< MAX_NICS
; index
++)
688 if (!nd_table
[index
].used
)
693 int qemu_show_nic_models(const char *arg
, const char *const *models
)
697 if (!arg
|| strcmp(arg
, "?"))
700 fprintf(stderr
, "qemu: Supported NIC models: ");
701 for (i
= 0 ; models
[i
]; i
++)
702 fprintf(stderr
, "%s%c", models
[i
], models
[i
+1] ? ',' : '\n');
706 void qemu_check_nic_model(NICInfo
*nd
, const char *model
)
708 const char *models
[2];
713 if (qemu_show_nic_models(nd
->model
, models
))
715 if (qemu_find_nic_model(nd
, models
, model
) < 0)
719 int qemu_find_nic_model(NICInfo
*nd
, const char * const *models
,
720 const char *default_model
)
725 nd
->model
= g_strdup(default_model
);
727 for (i
= 0 ; models
[i
]; i
++) {
728 if (strcmp(nd
->model
, models
[i
]) == 0)
732 error_report("Unsupported NIC model: %s", nd
->model
);
736 int net_handle_fd_param(Monitor
*mon
, const char *param
)
740 if (!qemu_isdigit(param
[0]) && mon
) {
742 fd
= monitor_get_fd(mon
, param
);
744 error_report("No file descriptor named %s found", param
);
748 fd
= qemu_parse_fd(param
);
754 static int net_init_nic(const NetClientOptions
*opts
, const char *name
,
755 VLANClientState
*peer
)
759 const NetLegacyNicOptions
*nic
;
761 assert(opts
->kind
== NET_CLIENT_OPTIONS_KIND_NIC
);
764 idx
= nic_get_free_idx();
765 if (idx
== -1 || nb_nics
>= MAX_NICS
) {
766 error_report("Too Many NICs");
772 memset(nd
, 0, sizeof(*nd
));
774 if (nic
->has_netdev
) {
775 nd
->netdev
= qemu_find_netdev(nic
->netdev
);
777 error_report("netdev '%s' not found", nic
->netdev
);
785 nd
->name
= g_strdup(name
);
787 if (nic
->has_model
) {
788 nd
->model
= g_strdup(nic
->model
);
791 nd
->devaddr
= g_strdup(nic
->addr
);
794 if (nic
->has_macaddr
&&
795 net_parse_macaddr(nd
->macaddr
.a
, nic
->macaddr
) < 0) {
796 error_report("invalid syntax for ethernet address");
799 qemu_macaddr_default_if_unset(&nd
->macaddr
);
801 if (nic
->has_vectors
) {
802 if (nic
->vectors
> 0x7ffffff) {
803 error_report("invalid # of vectors: %"PRIu32
, nic
->vectors
);
806 nd
->nvectors
= nic
->vectors
;
808 nd
->nvectors
= DEV_NVECTORS_UNSPECIFIED
;
818 static int (* const net_client_init_fun
[NET_CLIENT_OPTIONS_KIND_MAX
])(
819 const NetClientOptions
*opts
,
821 VLANClientState
*peer
) = {
822 [NET_CLIENT_OPTIONS_KIND_NIC
] = net_init_nic
,
824 [NET_CLIENT_OPTIONS_KIND_USER
] = net_init_slirp
,
826 [NET_CLIENT_OPTIONS_KIND_TAP
] = net_init_tap
,
827 [NET_CLIENT_OPTIONS_KIND_SOCKET
] = net_init_socket
,
829 [NET_CLIENT_OPTIONS_KIND_VDE
] = net_init_vde
,
831 [NET_CLIENT_OPTIONS_KIND_DUMP
] = net_init_dump
,
832 #ifdef CONFIG_NET_BRIDGE
833 [NET_CLIENT_OPTIONS_KIND_BRIDGE
] = net_init_bridge
,
835 [NET_CLIENT_OPTIONS_KIND_HUBPORT
] = net_init_hubport
,
839 static int net_client_init1(const void *object
, int is_netdev
, Error
**errp
)
842 const Netdev
*netdev
;
843 const NetLegacy
*net
;
845 const NetClientOptions
*opts
;
850 opts
= u
.netdev
->opts
;
853 switch (opts
->kind
) {
855 case NET_CLIENT_OPTIONS_KIND_USER
:
857 case NET_CLIENT_OPTIONS_KIND_TAP
:
858 case NET_CLIENT_OPTIONS_KIND_SOCKET
:
860 case NET_CLIENT_OPTIONS_KIND_VDE
:
862 #ifdef CONFIG_NET_BRIDGE
863 case NET_CLIENT_OPTIONS_KIND_BRIDGE
:
865 case NET_CLIENT_OPTIONS_KIND_HUBPORT
:
869 error_set(errp
, QERR_INVALID_PARAMETER_VALUE
, "type",
870 "a netdev backend type");
876 /* missing optional values have been initialized to "all bits zero" */
877 name
= u
.net
->has_id
? u
.net
->id
: u
.net
->name
;
880 if (net_client_init_fun
[opts
->kind
]) {
881 VLANClientState
*peer
= NULL
;
883 /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
886 (opts
->kind
!= NET_CLIENT_OPTIONS_KIND_NIC
||
887 !opts
->nic
->has_netdev
)) {
888 peer
= net_hub_add_port(u
.net
->has_vlan
? u
.net
->vlan
: 0, NULL
);
891 if (net_client_init_fun
[opts
->kind
](opts
, name
, peer
) < 0) {
892 /* TODO push error reporting into init() methods */
893 error_set(errp
, QERR_DEVICE_INIT_FAILED
,
894 NetClientOptionsKind_lookup
[opts
->kind
]);
902 static void net_visit(Visitor
*v
, int is_netdev
, void **object
, Error
**errp
)
905 visit_type_Netdev(v
, (Netdev
**)object
, NULL
, errp
);
907 visit_type_NetLegacy(v
, (NetLegacy
**)object
, NULL
, errp
);
912 int net_client_init(QemuOpts
*opts
, int is_netdev
, Error
**errp
)
919 OptsVisitor
*ov
= opts_visitor_new(opts
);
921 net_visit(opts_get_visitor(ov
), is_netdev
, &object
, &err
);
922 opts_visitor_cleanup(ov
);
926 ret
= net_client_init1(object
, is_netdev
, &err
);
930 QapiDeallocVisitor
*dv
= qapi_dealloc_visitor_new();
932 net_visit(qapi_dealloc_get_visitor(dv
), is_netdev
, &object
, NULL
);
933 qapi_dealloc_visitor_cleanup(dv
);
936 error_propagate(errp
, err
);
941 static int net_host_check_device(const char *device
)
944 const char *valid_param_list
[] = { "tap", "socket", "dump"
945 #ifdef CONFIG_NET_BRIDGE
955 for (i
= 0; i
< sizeof(valid_param_list
) / sizeof(char *); i
++) {
956 if (!strncmp(valid_param_list
[i
], device
,
957 strlen(valid_param_list
[i
])))
964 void net_host_device_add(Monitor
*mon
, const QDict
*qdict
)
966 const char *device
= qdict_get_str(qdict
, "device");
967 const char *opts_str
= qdict_get_try_str(qdict
, "opts");
968 Error
*local_err
= NULL
;
971 if (!net_host_check_device(device
)) {
972 monitor_printf(mon
, "invalid host network device %s\n", device
);
976 opts
= qemu_opts_parse(qemu_find_opts("net"), opts_str
? opts_str
: "", 0);
981 qemu_opt_set(opts
, "type", device
);
983 net_client_init(opts
, 0, &local_err
);
984 if (error_is_set(&local_err
)) {
985 qerror_report_err(local_err
);
986 error_free(local_err
);
987 monitor_printf(mon
, "adding host network device %s failed\n", device
);
991 void net_host_device_remove(Monitor
*mon
, const QDict
*qdict
)
994 int vlan_id
= qdict_get_int(qdict
, "vlan_id");
995 const char *device
= qdict_get_str(qdict
, "device");
997 vc
= qemu_find_vlan_client_by_name(mon
, vlan_id
, device
);
1001 if (!net_host_check_device(vc
->model
)) {
1002 monitor_printf(mon
, "invalid host network device %s\n", device
);
1005 qemu_del_vlan_client(vc
);
1008 void netdev_add(QemuOpts
*opts
, Error
**errp
)
1010 net_client_init(opts
, 1, errp
);
1013 int qmp_netdev_add(Monitor
*mon
, const QDict
*qdict
, QObject
**ret
)
1015 Error
*local_err
= NULL
;
1016 QemuOptsList
*opts_list
;
1019 opts_list
= qemu_find_opts_err("netdev", &local_err
);
1020 if (error_is_set(&local_err
)) {
1024 opts
= qemu_opts_from_qdict(opts_list
, qdict
, &local_err
);
1025 if (error_is_set(&local_err
)) {
1029 netdev_add(opts
, &local_err
);
1030 if (error_is_set(&local_err
)) {
1031 qemu_opts_del(opts
);
1038 qerror_report_err(local_err
);
1039 error_free(local_err
);
1043 void qmp_netdev_del(const char *id
, Error
**errp
)
1045 VLANClientState
*vc
;
1047 vc
= qemu_find_netdev(id
);
1049 error_set(errp
, QERR_DEVICE_NOT_FOUND
, id
);
1053 qemu_del_vlan_client(vc
);
1054 qemu_opts_del(qemu_opts_find(qemu_find_opts_err("netdev", errp
), id
));
1057 static void print_net_client(Monitor
*mon
, VLANClientState
*vc
)
1059 monitor_printf(mon
, "%s: type=%s,%s\n", vc
->name
,
1060 NetClientOptionsKind_lookup
[vc
->info
->type
], vc
->info_str
);
1063 void do_info_network(Monitor
*mon
)
1066 VLANClientState
*vc
, *peer
;
1067 NetClientOptionsKind type
;
1069 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1070 monitor_printf(mon
, "VLAN %d devices:\n", vlan
->id
);
1072 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
1073 monitor_printf(mon
, " ");
1074 print_net_client(mon
, vc
);
1077 monitor_printf(mon
, "Devices not on any VLAN:\n");
1078 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
1080 type
= vc
->info
->type
;
1081 if (!peer
|| type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
1082 monitor_printf(mon
, " ");
1083 print_net_client(mon
, vc
);
1084 } /* else it's a netdev connected to a NIC, printed with the NIC */
1085 if (peer
&& type
== NET_CLIENT_OPTIONS_KIND_NIC
) {
1086 monitor_printf(mon
, " \\ ");
1087 print_net_client(mon
, peer
);
1093 void qmp_set_link(const char *name
, bool up
, Error
**errp
)
1096 VLANClientState
*vc
= NULL
;
1098 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1099 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
1100 if (strcmp(vc
->name
, name
) == 0) {
1105 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
1106 if (!strcmp(vc
->name
, name
)) {
1113 error_set(errp
, QERR_DEVICE_NOT_FOUND
, name
);
1117 vc
->link_down
= !up
;
1119 if (vc
->info
->link_status_changed
) {
1120 vc
->info
->link_status_changed(vc
);
1123 /* Notify peer. Don't update peer link status: this makes it possible to
1124 * disconnect from host network without notifying the guest.
1125 * FIXME: is disconnected link status change operation useful?
1127 * Current behaviour is compatible with qemu vlans where there could be
1128 * multiple clients that can still communicate with each other in
1129 * disconnected mode. For now maintain this compatibility. */
1130 if (vc
->peer
&& vc
->peer
->info
->link_status_changed
) {
1131 vc
->peer
->info
->link_status_changed(vc
->peer
);
1135 void net_cleanup(void)
1138 VLANClientState
*vc
, *next_vc
;
1140 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1141 QTAILQ_FOREACH_SAFE(vc
, &vlan
->clients
, next
, next_vc
) {
1142 qemu_del_vlan_client(vc
);
1146 QTAILQ_FOREACH_SAFE(vc
, &non_vlan_clients
, next
, next_vc
) {
1147 qemu_del_vlan_client(vc
);
1151 void net_check_clients(void)
1154 VLANClientState
*vc
;
1157 /* Don't warn about the default network setup that you get if
1158 * no command line -net or -netdev options are specified. There
1159 * are two cases that we would otherwise complain about:
1160 * (1) board doesn't support a NIC but the implicit "-net nic"
1162 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1163 * sets up a nic that isn't connected to anything.
1169 QTAILQ_FOREACH(vlan
, &vlans
, next
) {
1170 int has_nic
= 0, has_host_dev
= 0;
1172 QTAILQ_FOREACH(vc
, &vlan
->clients
, next
) {
1173 switch (vc
->info
->type
) {
1174 case NET_CLIENT_OPTIONS_KIND_NIC
:
1177 case NET_CLIENT_OPTIONS_KIND_USER
:
1178 case NET_CLIENT_OPTIONS_KIND_TAP
:
1179 case NET_CLIENT_OPTIONS_KIND_SOCKET
:
1180 case NET_CLIENT_OPTIONS_KIND_VDE
:
1186 if (has_host_dev
&& !has_nic
)
1187 fprintf(stderr
, "Warning: vlan %d with no nics\n", vlan
->id
);
1188 if (has_nic
&& !has_host_dev
)
1190 "Warning: vlan %d is not connected to host network\n",
1193 QTAILQ_FOREACH(vc
, &non_vlan_clients
, next
) {
1195 fprintf(stderr
, "Warning: %s %s has no peer\n",
1196 vc
->info
->type
== NET_CLIENT_OPTIONS_KIND_NIC
? "nic" : "netdev",
1201 /* Check that all NICs requested via -net nic actually got created.
1202 * NICs created via -device don't need to be checked here because
1203 * they are always instantiated.
1205 for (i
= 0; i
< MAX_NICS
; i
++) {
1206 NICInfo
*nd
= &nd_table
[i
];
1207 if (nd
->used
&& !nd
->instantiated
) {
1208 fprintf(stderr
, "Warning: requested NIC (%s, model %s) "
1209 "was not created (not supported by this machine?)\n",
1210 nd
->name
? nd
->name
: "anonymous",
1211 nd
->model
? nd
->model
: "unspecified");
1216 static int net_init_client(QemuOpts
*opts
, void *dummy
)
1218 Error
*local_err
= NULL
;
1220 net_client_init(opts
, 0, &local_err
);
1221 if (error_is_set(&local_err
)) {
1222 qerror_report_err(local_err
);
1223 error_free(local_err
);
1230 static int net_init_netdev(QemuOpts
*opts
, void *dummy
)
1232 Error
*local_err
= NULL
;
1235 ret
= net_client_init(opts
, 1, &local_err
);
1236 if (error_is_set(&local_err
)) {
1237 qerror_report_err(local_err
);
1238 error_free(local_err
);
1245 int net_init_clients(void)
1247 QemuOptsList
*net
= qemu_find_opts("net");
1250 /* if no clients, we use a default config */
1251 qemu_opts_set(net
, NULL
, "type", "nic");
1253 qemu_opts_set(net
, NULL
, "type", "user");
1257 QTAILQ_INIT(&vlans
);
1258 QTAILQ_INIT(&non_vlan_clients
);
1260 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev
, NULL
, 1) == -1)
1263 if (qemu_opts_foreach(net
, net_init_client
, NULL
, 1) == -1) {
1270 int net_client_parse(QemuOptsList
*opts_list
, const char *optarg
)
1272 #if defined(CONFIG_SLIRP)
1274 if (net_slirp_parse_legacy(opts_list
, optarg
, &ret
)) {
1279 if (!qemu_opts_parse(opts_list
, optarg
, 1)) {
1289 unsigned compute_mcast_idx(const uint8_t *ep
)
1296 for (i
= 0; i
< 6; i
++) {
1298 for (j
= 0; j
< 8; j
++) {
1299 carry
= ((crc
& 0x80000000L
) ? 1 : 0) ^ (b
& 0x01);
1303 crc
= ((crc
^ POLYNOMIAL
) | carry
);