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
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
36 #include <sys/times.h>
40 #include <sys/ioctl.h>
41 #include <sys/resource.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
46 #include <net/if_tap.h>
49 #include <linux/if_tun.h>
51 #include <arpa/inet.h>
54 #include <sys/select.h>
57 #if defined(__FreeBSD__) || defined(__DragonFly__)
62 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63 #include <freebsd/stdlib.h>
68 #include <linux/rtc.h>
70 /* For the benefit of older linux systems which don't supply it,
71 we use a local copy of hpet.h. */
72 /* #include <linux/hpet.h> */
75 #include <linux/ppdev.h>
76 #include <linux/parport.h>
80 #include <sys/ethernet.h>
81 #include <sys/sockio.h>
82 #include <netinet/arp.h>
83 #include <netinet/in.h>
84 #include <netinet/in_systm.h>
85 #include <netinet/ip.h>
86 #include <netinet/ip_icmp.h> // must come after ip.h
87 #include <netinet/udp.h>
88 #include <netinet/tcp.h>
96 #if defined(__OpenBSD__)
100 #if defined(CONFIG_VDE)
101 #include <libvdeplug.h>
104 #include "qemu-common.h"
108 #include "qemu-timer.h"
109 #include "qemu-char.h"
110 #include "audio/audio.h"
111 #include "qemu_socket.h"
112 #include "qemu-log.h"
113 #include "qemu-config.h"
115 #include "slirp/libslirp.h"
117 static QTAILQ_HEAD(, VLANState) vlans;
118 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
120 /***********************************************************/
121 /* network device redirectors */
123 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
124 static void hex_dump(FILE *f, const uint8_t *buf, int size)
128 for(i=0;i<size;i+=16) {
132 fprintf(f, "%08x ", i);
135 fprintf(f, " %02x", buf[i+j]);
142 if (c < ' ' || c > '~')
151 static int parse_macaddr(uint8_t *macaddr, const char *p)
158 offset = strtol(p, &last_char, 0);
159 if (0 == errno && '\0' == *last_char &&
160 offset >= 0 && offset <= 0xFFFFFF) {
161 macaddr[3] = (offset & 0xFF0000) >> 16;
162 macaddr[4] = (offset & 0xFF00) >> 8;
163 macaddr[5] = offset & 0xFF;
166 for(i = 0; i < 6; i++) {
167 macaddr[i] = strtol(p, (char **)&p, 16);
172 if (*p != ':' && *p != '-')
183 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
194 if (len > buf_size - 1)
203 int parse_host_src_port(struct sockaddr_in *haddr,
204 struct sockaddr_in *saddr,
205 const char *input_str)
207 char *str = strdup(input_str);
208 char *host_str = str;
210 const char *src_str2;
214 * Chop off any extra arguments at the end of the string which
215 * would start with a comma, then fill in the src port information
216 * if it was provided else use the "any address" and "any port".
218 if ((ptr = strchr(str,',')))
221 if ((src_str = strchr(input_str,'@'))) {
226 if (parse_host_port(haddr, host_str) < 0)
230 if (!src_str || *src_str == '\0')
233 if (parse_host_port(saddr, src_str2) < 0)
244 int parse_host_port(struct sockaddr_in *saddr, const char *str)
252 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
254 saddr->sin_family = AF_INET;
255 if (buf[0] == '\0') {
256 saddr->sin_addr.s_addr = 0;
258 if (qemu_isdigit(buf[0])) {
259 if (!inet_aton(buf, &saddr->sin_addr))
262 if ((he = gethostbyname(buf)) == NULL)
264 saddr->sin_addr = *(struct in_addr *)he->h_addr;
267 port = strtol(p, (char **)&r, 0);
270 saddr->sin_port = htons(port);
274 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
276 snprintf(vc->info_str, sizeof(vc->info_str),
277 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
279 macaddr[0], macaddr[1], macaddr[2],
280 macaddr[3], macaddr[4], macaddr[5]);
283 static char *assign_name(VLANClientState *vc1, const char *model)
289 QTAILQ_FOREACH(vlan, &vlans, next) {
292 QTAILQ_FOREACH(vc, &vlan->clients, next) {
293 if (vc != vc1 && strcmp(vc->model, model) == 0) {
299 snprintf(buf, sizeof(buf), "%s.%d", model, id);
301 return qemu_strdup(buf);
304 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
305 VLANClientState *peer,
308 NetCanReceive *can_receive,
310 NetReceiveIOV *receive_iov,
316 vc = qemu_mallocz(sizeof(VLANClientState));
318 vc->model = qemu_strdup(model);
320 vc->name = qemu_strdup(name);
322 vc->name = assign_name(vc, model);
323 vc->can_receive = can_receive;
324 vc->receive = receive;
325 vc->receive_iov = receive_iov;
326 vc->cleanup = cleanup;
332 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
338 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
344 void qemu_del_vlan_client(VLANClientState *vc)
347 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
349 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
351 vc->peer->peer = NULL;
360 qemu_free(vc->model);
364 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
368 QTAILQ_FOREACH(vc, &vlan->clients, next) {
369 if (vc->opaque == opaque) {
377 static VLANClientState *
378 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
379 const char *client_str)
384 vlan = qemu_find_vlan(vlan_id, 0);
386 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
390 QTAILQ_FOREACH(vc, &vlan->clients, next) {
391 if (!strcmp(vc->name, client_str)) {
396 monitor_printf(mon, "can't find device %s on VLAN %d\n",
397 client_str, vlan_id);
403 int qemu_can_send_packet(VLANClientState *sender)
405 VLANState *vlan = sender->vlan;
412 QTAILQ_FOREACH(vc, &vlan->clients, next) {
417 /* no can_receive() handler, they can always receive */
418 if (!vc->can_receive || vc->can_receive(vc)) {
426 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
431 sender->vlan->delivering = 1;
433 QTAILQ_FOREACH(vc, &sender->vlan->clients, next) {
445 len = vc->receive(vc, buf, size);
447 ret = (ret >= 0) ? ret : len;
450 sender->vlan->delivering = 0;
455 void qemu_purge_queued_packets(VLANClientState *vc)
457 VLANPacket *packet, *next;
462 QTAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
463 if (packet->sender == vc) {
464 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
470 void qemu_flush_queued_packets(VLANClientState *vc)
475 while (!QTAILQ_EMPTY(&vc->vlan->send_queue)) {
479 packet = QTAILQ_FIRST(&vc->vlan->send_queue);
480 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
482 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
483 if (ret == 0 && packet->sent_cb != NULL) {
484 QTAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
489 packet->sent_cb(packet->sender, ret);
495 static void qemu_enqueue_packet(VLANClientState *sender,
496 const uint8_t *buf, int size,
497 NetPacketSent *sent_cb)
501 packet = qemu_malloc(sizeof(VLANPacket) + size);
502 packet->sender = sender;
504 packet->sent_cb = sent_cb;
505 memcpy(packet->data, buf, size);
507 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
510 ssize_t qemu_send_packet_async(VLANClientState *sender,
511 const uint8_t *buf, int size,
512 NetPacketSent *sent_cb)
516 if (sender->link_down || !sender->vlan) {
521 printf("qemu_send_packet_async:\n");
522 hex_dump(stdout, buf, size);
525 if (sender->vlan->delivering) {
526 qemu_enqueue_packet(sender, buf, size, NULL);
530 ret = qemu_deliver_packet(sender, buf, size);
531 if (ret == 0 && sent_cb != NULL) {
532 qemu_enqueue_packet(sender, buf, size, sent_cb);
536 qemu_flush_queued_packets(sender);
541 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
543 qemu_send_packet_async(vc, buf, size, NULL);
546 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
549 uint8_t buffer[4096];
553 for (i = 0; i < iovcnt; i++) {
556 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
557 memcpy(buffer + offset, iov[i].iov_base, len);
561 return vc->receive(vc, buffer, offset);
564 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
569 for (i = 0; i < iovcnt; i++)
570 offset += iov[i].iov_len;
574 static int qemu_deliver_packet_iov(VLANClientState *sender,
575 const struct iovec *iov, int iovcnt)
580 sender->vlan->delivering = 1;
582 QTAILQ_FOREACH(vc, &sender->vlan->clients, next) {
590 ret = calc_iov_length(iov, iovcnt);
594 if (vc->receive_iov) {
595 len = vc->receive_iov(vc, iov, iovcnt);
597 len = vc_sendv_compat(vc, iov, iovcnt);
600 ret = (ret >= 0) ? ret : len;
603 sender->vlan->delivering = 0;
608 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
609 const struct iovec *iov, int iovcnt,
610 NetPacketSent *sent_cb)
616 max_len = calc_iov_length(iov, iovcnt);
618 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
619 packet->sender = sender;
620 packet->sent_cb = sent_cb;
623 for (i = 0; i < iovcnt; i++) {
624 size_t len = iov[i].iov_len;
626 memcpy(packet->data + packet->size, iov[i].iov_base, len);
630 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
635 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
636 const struct iovec *iov, int iovcnt,
637 NetPacketSent *sent_cb)
641 if (sender->link_down || !sender->vlan) {
642 return calc_iov_length(iov, iovcnt);
645 if (sender->vlan->delivering) {
646 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
649 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
650 if (ret == 0 && sent_cb != NULL) {
651 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
655 qemu_flush_queued_packets(sender);
661 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
663 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
666 #if defined(CONFIG_SLIRP)
668 /* slirp network adapter */
670 #define SLIRP_CFG_HOSTFWD 1
671 #define SLIRP_CFG_LEGACY 2
673 struct slirp_config_str {
674 struct slirp_config_str *next;
680 typedef struct SlirpState {
681 QTAILQ_ENTRY(SlirpState) entry;
689 static struct slirp_config_str *slirp_configs;
690 const char *legacy_tftp_prefix;
691 const char *legacy_bootp_filename;
692 static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
693 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
695 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
697 static int slirp_guestfwd(SlirpState *s, const char *config_str,
701 static const char *legacy_smb_export;
703 static int slirp_smb(SlirpState *s, const char *exported_dir,
704 struct in_addr vserver_addr);
705 static void slirp_smb_cleanup(SlirpState *s);
707 static inline void slirp_smb_cleanup(SlirpState *s) { }
710 int slirp_can_output(void *opaque)
712 SlirpState *s = opaque;
714 return qemu_can_send_packet(s->vc);
717 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
719 SlirpState *s = opaque;
722 printf("slirp output:\n");
723 hex_dump(stdout, pkt, pkt_len);
725 qemu_send_packet(s->vc, pkt, pkt_len);
728 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
730 SlirpState *s = vc->opaque;
733 printf("slirp input:\n");
734 hex_dump(stdout, buf, size);
736 slirp_input(s->slirp, buf, size);
740 static void net_slirp_cleanup(VLANClientState *vc)
742 SlirpState *s = vc->opaque;
744 slirp_cleanup(s->slirp);
745 slirp_smb_cleanup(s);
746 QTAILQ_REMOVE(&slirp_stacks, s, entry);
750 static int net_slirp_init(VLANState *vlan, const char *model,
751 const char *name, int restricted,
752 const char *vnetwork, const char *vhost,
753 const char *vhostname, const char *tftp_export,
754 const char *bootfile, const char *vdhcp_start,
755 const char *vnameserver, const char *smb_export,
756 const char *vsmbserver)
758 /* default settings according to historic slirp */
759 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
760 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
761 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
762 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
763 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
765 struct in_addr smbsrv = { .s_addr = 0 };
772 struct slirp_config_str *config;
775 tftp_export = legacy_tftp_prefix;
778 bootfile = legacy_bootp_filename;
782 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
783 if (!inet_aton(vnetwork, &net)) {
786 addr = ntohl(net.s_addr);
787 if (!(addr & 0x80000000)) {
788 mask.s_addr = htonl(0xff000000); /* class A */
789 } else if ((addr & 0xfff00000) == 0xac100000) {
790 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
791 } else if ((addr & 0xc0000000) == 0x80000000) {
792 mask.s_addr = htonl(0xffff0000); /* class B */
793 } else if ((addr & 0xffff0000) == 0xc0a80000) {
794 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
795 } else if ((addr & 0xffff0000) == 0xc6120000) {
796 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
797 } else if ((addr & 0xe0000000) == 0xe0000000) {
798 mask.s_addr = htonl(0xffffff00); /* class C */
800 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
803 if (!inet_aton(buf, &net)) {
806 shift = strtol(vnetwork, &end, 10);
808 if (!inet_aton(vnetwork, &mask)) {
811 } else if (shift < 4 || shift > 32) {
814 mask.s_addr = htonl(0xffffffff << (32 - shift));
817 net.s_addr &= mask.s_addr;
818 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
819 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
820 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
823 if (vhost && !inet_aton(vhost, &host)) {
826 if ((host.s_addr & mask.s_addr) != net.s_addr) {
830 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
833 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
834 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
838 if (vnameserver && !inet_aton(vnameserver, &dns)) {
841 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
842 dns.s_addr == host.s_addr) {
847 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
852 s = qemu_mallocz(sizeof(SlirpState));
853 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
854 tftp_export, bootfile, dhcp, dns, s);
855 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
857 for (config = slirp_configs; config; config = config->next) {
858 if (config->flags & SLIRP_CFG_HOSTFWD) {
859 if (slirp_hostfwd(s, config->str,
860 config->flags & SLIRP_CFG_LEGACY) < 0)
863 if (slirp_guestfwd(s, config->str,
864 config->flags & SLIRP_CFG_LEGACY) < 0)
870 smb_export = legacy_smb_export;
873 if (slirp_smb(s, smb_export, smbsrv) < 0)
878 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
880 net_slirp_cleanup, s);
881 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
882 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
886 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
892 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
896 if (strcmp(vc->model, "user")) {
897 monitor_printf(mon, "invalid device specified\n");
902 if (QTAILQ_EMPTY(&slirp_stacks)) {
903 monitor_printf(mon, "user mode network stack not in use\n");
906 return QTAILQ_FIRST(&slirp_stacks);
910 void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
912 struct in_addr host_addr = { .s_addr = INADDR_ANY };
915 const char *src_str, *p;
919 const char *arg1 = qdict_get_str(qdict, "arg1");
920 const char *arg2 = qdict_get_try_str(qdict, "arg2");
921 const char *arg3 = qdict_get_try_str(qdict, "arg3");
924 s = slirp_lookup(mon, arg1, arg2);
927 s = slirp_lookup(mon, NULL, NULL);
934 if (!src_str || !src_str[0])
938 get_str_sep(buf, sizeof(buf), &p, ':');
940 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
942 } else if (!strcmp(buf, "udp")) {
948 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
951 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
957 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
958 host_addr, host_port);
960 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
961 err ? "removed" : "not found");
965 monitor_printf(mon, "invalid format\n");
968 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
971 struct in_addr host_addr = { .s_addr = INADDR_ANY };
972 struct in_addr guest_addr = { .s_addr = 0 };
973 int host_port, guest_port;
980 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
983 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
985 } else if (!strcmp(buf, "udp")) {
991 if (!legacy_format) {
992 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
995 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1000 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
1003 host_port = strtol(buf, &end, 0);
1004 if (*end != '\0' || host_port < 1 || host_port > 65535) {
1008 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1011 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1015 guest_port = strtol(p, &end, 0);
1016 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1020 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1022 qemu_error("could not set up host forwarding rule '%s'\n",
1029 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
1033 void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
1035 const char *redir_str;
1037 const char *arg1 = qdict_get_str(qdict, "arg1");
1038 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1039 const char *arg3 = qdict_get_try_str(qdict, "arg3");
1042 s = slirp_lookup(mon, arg1, arg2);
1045 s = slirp_lookup(mon, NULL, NULL);
1049 slirp_hostfwd(s, redir_str, 0);
1054 int net_slirp_redir(const char *redir_str)
1056 struct slirp_config_str *config;
1058 if (QTAILQ_EMPTY(&slirp_stacks)) {
1059 config = qemu_malloc(sizeof(*config));
1060 pstrcpy(config->str, sizeof(config->str), redir_str);
1061 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1062 config->next = slirp_configs;
1063 slirp_configs = config;
1067 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
1072 /* automatic user mode samba server configuration */
1073 static void slirp_smb_cleanup(SlirpState *s)
1077 if (s->smb_dir[0] != '\0') {
1078 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1080 s->smb_dir[0] = '\0';
1084 static int slirp_smb(SlirpState* s, const char *exported_dir,
1085 struct in_addr vserver_addr)
1087 static int instance;
1089 char smb_cmdline[128];
1092 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1093 (long)getpid(), instance++);
1094 if (mkdir(s->smb_dir, 0700) < 0) {
1095 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
1098 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1100 f = fopen(smb_conf, "w");
1102 slirp_smb_cleanup(s);
1103 qemu_error("could not create samba server configuration file '%s'\n",
1111 "socket address=127.0.0.1\n"
1112 "pid directory=%s\n"
1113 "lock directory=%s\n"
1114 "log file=%s/log.smbd\n"
1115 "smb passwd file=%s/smbpasswd\n"
1116 "security = share\n"
1130 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1131 SMBD_COMMAND, smb_conf);
1133 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1134 slirp_smb_cleanup(s);
1135 qemu_error("conflicting/invalid smbserver address\n");
1141 /* automatic user mode samba server configuration (legacy interface) */
1142 int net_slirp_smb(const char *exported_dir)
1144 struct in_addr vserver_addr = { .s_addr = 0 };
1146 if (legacy_smb_export) {
1147 fprintf(stderr, "-smb given twice\n");
1150 legacy_smb_export = exported_dir;
1151 if (!QTAILQ_EMPTY(&slirp_stacks)) {
1152 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
1158 #endif /* !defined(_WIN32) */
1161 CharDriverState *hd;
1162 struct in_addr server;
1167 static int guestfwd_can_read(void *opaque)
1169 struct GuestFwd *fwd = opaque;
1170 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1173 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1175 struct GuestFwd *fwd = opaque;
1176 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1179 static int slirp_guestfwd(SlirpState *s, const char *config_str,
1182 struct in_addr server = { .s_addr = 0 };
1183 struct GuestFwd *fwd;
1190 if (legacy_format) {
1191 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1195 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1198 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1201 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1204 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1207 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1211 port = strtol(buf, &end, 10);
1212 if (*end != '\0' || port < 1 || port > 65535) {
1216 fwd = qemu_malloc(sizeof(struct GuestFwd));
1217 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1218 fwd->hd = qemu_chr_open(buf, p, NULL);
1220 qemu_error("could not open guest forwarding device '%s'\n", buf);
1225 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1226 qemu_error("conflicting/invalid host:port in guest forwarding "
1227 "rule '%s'\n", config_str);
1231 fwd->server = server;
1233 fwd->slirp = s->slirp;
1235 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1240 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
1244 void do_info_usernet(Monitor *mon)
1248 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
1249 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1250 slirp_connection_info(s->slirp, mon);
1254 #endif /* CONFIG_SLIRP */
1256 #if !defined(_WIN32)
1258 typedef struct TAPState {
1259 VLANClientState *vc;
1261 char down_script[1024];
1262 char down_script_arg[128];
1264 unsigned int read_poll : 1;
1265 unsigned int write_poll : 1;
1268 static int launch_script(const char *setup_script, const char *ifname, int fd);
1270 static int tap_can_send(void *opaque);
1271 static void tap_send(void *opaque);
1272 static void tap_writable(void *opaque);
1274 static void tap_update_fd_handler(TAPState *s)
1276 qemu_set_fd_handler2(s->fd,
1277 s->read_poll ? tap_can_send : NULL,
1278 s->read_poll ? tap_send : NULL,
1279 s->write_poll ? tap_writable : NULL,
1283 static void tap_read_poll(TAPState *s, int enable)
1285 s->read_poll = !!enable;
1286 tap_update_fd_handler(s);
1289 static void tap_write_poll(TAPState *s, int enable)
1291 s->write_poll = !!enable;
1292 tap_update_fd_handler(s);
1295 static void tap_writable(void *opaque)
1297 TAPState *s = opaque;
1299 tap_write_poll(s, 0);
1301 qemu_flush_queued_packets(s->vc);
1304 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1307 TAPState *s = vc->opaque;
1311 len = writev(s->fd, iov, iovcnt);
1312 } while (len == -1 && errno == EINTR);
1314 if (len == -1 && errno == EAGAIN) {
1315 tap_write_poll(s, 1);
1322 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1324 TAPState *s = vc->opaque;
1328 len = write(s->fd, buf, size);
1329 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1334 static int tap_can_send(void *opaque)
1336 TAPState *s = opaque;
1338 return qemu_can_send_packet(s->vc);
1342 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1347 sbuf.maxlen = maxlen;
1348 sbuf.buf = (char *)buf;
1350 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1353 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1355 return read(tapfd, buf, maxlen);
1359 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1361 TAPState *s = vc->opaque;
1362 tap_read_poll(s, 1);
1365 static void tap_send(void *opaque)
1367 TAPState *s = opaque;
1371 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1376 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1378 tap_read_poll(s, 0);
1384 /* sndbuf should be set to a value lower than the tx queue
1385 * capacity of any destination network interface.
1386 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1387 * a good default, given a 1500 byte MTU.
1389 #define TAP_DEFAULT_SNDBUF 1024*1024
1391 static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
1395 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
1400 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
1401 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
1407 static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
1411 #endif /* TUNSETSNDBUF */
1413 static void tap_cleanup(VLANClientState *vc)
1415 TAPState *s = vc->opaque;
1417 qemu_purge_queued_packets(vc);
1419 if (s->down_script[0])
1420 launch_script(s->down_script, s->down_script_arg, s->fd);
1422 tap_read_poll(s, 0);
1423 tap_write_poll(s, 0);
1430 static TAPState *net_tap_fd_init(VLANState *vlan,
1437 s = qemu_mallocz(sizeof(TAPState));
1439 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
1440 tap_receive, tap_receive_iov,
1442 tap_read_poll(s, 1);
1443 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1447 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1448 static int tap_open(char *ifname, int ifname_size)
1454 TFR(fd = open("/dev/tap", O_RDWR));
1456 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1461 dev = devname(s.st_rdev, S_IFCHR);
1462 pstrcpy(ifname, ifname_size, dev);
1464 fcntl(fd, F_SETFL, O_NONBLOCK);
1467 #elif defined(__sun__)
1468 #define TUNNEWPPA (('T'<<16) | 0x0001)
1470 * Allocate TAP device, returns opened fd.
1471 * Stores dev name in the first arg(must be large enough).
1473 static int tap_alloc(char *dev, size_t dev_size)
1475 int tap_fd, if_fd, ppa = -1;
1476 static int ip_fd = 0;
1479 static int arp_fd = 0;
1480 int ip_muxid, arp_muxid;
1481 struct strioctl strioc_if, strioc_ppa;
1482 int link_type = I_PLINK;;
1484 char actual_name[32] = "";
1486 memset(&ifr, 0x0, sizeof(ifr));
1490 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1494 /* Check if IP device was opened */
1498 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1500 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1504 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1506 syslog(LOG_ERR, "Can't open /dev/tap");
1510 /* Assign a new PPA and get its unit number. */
1511 strioc_ppa.ic_cmd = TUNNEWPPA;
1512 strioc_ppa.ic_timout = 0;
1513 strioc_ppa.ic_len = sizeof(ppa);
1514 strioc_ppa.ic_dp = (char *)&ppa;
1515 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1516 syslog (LOG_ERR, "Can't assign new interface");
1518 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1520 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1523 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1524 syslog(LOG_ERR, "Can't push IP module");
1528 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1529 syslog(LOG_ERR, "Can't get flags\n");
1531 snprintf (actual_name, 32, "tap%d", ppa);
1532 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1535 /* Assign ppa according to the unit number returned by tun device */
1537 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1538 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1539 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1540 syslog (LOG_ERR, "Can't get flags\n");
1541 /* Push arp module to if_fd */
1542 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1543 syslog (LOG_ERR, "Can't push ARP module (2)");
1545 /* Push arp module to ip_fd */
1546 if (ioctl (ip_fd, I_POP, NULL) < 0)
1547 syslog (LOG_ERR, "I_POP failed\n");
1548 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1549 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1551 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1553 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1555 /* Set ifname to arp */
1556 strioc_if.ic_cmd = SIOCSLIFNAME;
1557 strioc_if.ic_timout = 0;
1558 strioc_if.ic_len = sizeof(ifr);
1559 strioc_if.ic_dp = (char *)𝔦
1560 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1561 syslog (LOG_ERR, "Can't set ifname to arp\n");
1564 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1565 syslog(LOG_ERR, "Can't link TAP device to IP");
1569 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1570 syslog (LOG_ERR, "Can't link TAP device to ARP");
1574 memset(&ifr, 0x0, sizeof(ifr));
1575 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1576 ifr.lifr_ip_muxid = ip_muxid;
1577 ifr.lifr_arp_muxid = arp_muxid;
1579 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1581 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1582 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1583 syslog (LOG_ERR, "Can't set multiplexor id");
1586 snprintf(dev, dev_size, "tap%d", ppa);
1590 static int tap_open(char *ifname, int ifname_size)
1594 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1595 fprintf(stderr, "Cannot allocate TAP device\n");
1598 pstrcpy(ifname, ifname_size, dev);
1599 fcntl(fd, F_SETFL, O_NONBLOCK);
1602 #elif defined (_AIX)
1603 static int tap_open(char *ifname, int ifname_size)
1605 fprintf (stderr, "no tap on AIX\n");
1609 static int tap_open(char *ifname, int ifname_size)
1614 TFR(fd = open("/dev/net/tun", O_RDWR));
1616 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1619 memset(&ifr, 0, sizeof(ifr));
1620 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1621 if (ifname[0] != '\0')
1622 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1624 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1625 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1627 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1631 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1632 fcntl(fd, F_SETFL, O_NONBLOCK);
1637 static int launch_script(const char *setup_script, const char *ifname, int fd)
1639 sigset_t oldmask, mask;
1645 sigaddset(&mask, SIGCHLD);
1646 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1648 /* try to launch network script */
1651 int open_max = sysconf(_SC_OPEN_MAX), i;
1653 for (i = 0; i < open_max; i++) {
1654 if (i != STDIN_FILENO &&
1655 i != STDOUT_FILENO &&
1656 i != STDERR_FILENO &&
1662 *parg++ = (char *)setup_script;
1663 *parg++ = (char *)ifname;
1665 execv(setup_script, args);
1667 } else if (pid > 0) {
1668 while (waitpid(pid, &status, 0) != pid) {
1671 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1673 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1677 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1681 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1682 const char *name, const char *ifname1,
1683 const char *setup_script, const char *down_script)
1689 if (ifname1 != NULL)
1690 pstrcpy(ifname, sizeof(ifname), ifname1);
1693 TFR(fd = tap_open(ifname, sizeof(ifname)));
1697 if (!setup_script || !strcmp(setup_script, "no"))
1699 if (setup_script[0] != '\0' &&
1700 launch_script(setup_script, ifname, fd)) {
1703 s = net_tap_fd_init(vlan, model, name, fd);
1704 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1705 "ifname=%s,script=%s,downscript=%s",
1706 ifname, setup_script, down_script);
1707 if (down_script && strcmp(down_script, "no")) {
1708 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1709 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1714 #endif /* !_WIN32 */
1716 #if defined(CONFIG_VDE)
1717 typedef struct VDEState {
1718 VLANClientState *vc;
1722 static void vde_to_qemu(void *opaque)
1724 VDEState *s = opaque;
1728 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1730 qemu_send_packet(s->vc, buf, size);
1734 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1736 VDEState *s = vc->opaque;
1740 ret = vde_send(s->vde, (const char *)buf, size, 0);
1741 } while (ret < 0 && errno == EINTR);
1746 static void vde_cleanup(VLANClientState *vc)
1748 VDEState *s = vc->opaque;
1749 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1754 static int net_vde_init(VLANState *vlan, const char *model,
1755 const char *name, const char *sock,
1756 int port, const char *group, int mode)
1759 char *init_group = (char *)group;
1760 char *init_sock = (char *)sock;
1762 struct vde_open_args args = {
1764 .group = init_group,
1768 s = qemu_mallocz(sizeof(VDEState));
1769 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1774 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
1777 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1778 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1779 sock, vde_datafd(s->vde));
1784 /* network connection */
1785 typedef struct NetSocketState {
1786 VLANClientState *vc;
1788 int state; /* 0 = getting length, 1 = getting data */
1790 unsigned int packet_len;
1792 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1795 typedef struct NetSocketListenState {
1800 } NetSocketListenState;
1802 /* XXX: we consider we can send the whole packet without blocking */
1803 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1805 NetSocketState *s = vc->opaque;
1809 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1810 return send_all(s->fd, buf, size);
1813 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1815 NetSocketState *s = vc->opaque;
1817 return sendto(s->fd, (const void *)buf, size, 0,
1818 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1821 static void net_socket_send(void *opaque)
1823 NetSocketState *s = opaque;
1829 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1831 err = socket_error();
1832 if (err != EWOULDBLOCK)
1834 } else if (size == 0) {
1835 /* end of connection */
1837 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1843 /* reassemble a packet from the network */
1849 memcpy(s->buf + s->index, buf, l);
1853 if (s->index == 4) {
1855 s->packet_len = ntohl(*(uint32_t *)s->buf);
1861 l = s->packet_len - s->index;
1864 if (s->index + l <= sizeof(s->buf)) {
1865 memcpy(s->buf + s->index, buf, l);
1867 fprintf(stderr, "serious error: oversized packet received,"
1868 "connection terminated.\n");
1876 if (s->index >= s->packet_len) {
1877 qemu_send_packet(s->vc, s->buf, s->packet_len);
1886 static void net_socket_send_dgram(void *opaque)
1888 NetSocketState *s = opaque;
1891 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1895 /* end of connection */
1896 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1899 qemu_send_packet(s->vc, s->buf, size);
1902 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1907 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1908 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1909 inet_ntoa(mcastaddr->sin_addr),
1910 (int)ntohl(mcastaddr->sin_addr.s_addr));
1914 fd = socket(PF_INET, SOCK_DGRAM, 0);
1916 perror("socket(PF_INET, SOCK_DGRAM)");
1921 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1922 (const char *)&val, sizeof(val));
1924 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1928 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1934 /* Add host to multicast group */
1935 imr.imr_multiaddr = mcastaddr->sin_addr;
1936 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1938 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1939 (const char *)&imr, sizeof(struct ip_mreq));
1941 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1945 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1947 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1948 (const char *)&val, sizeof(val));
1950 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1954 socket_set_nonblock(fd);
1962 static void net_socket_cleanup(VLANClientState *vc)
1964 NetSocketState *s = vc->opaque;
1965 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1970 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1973 int fd, int is_connected)
1975 struct sockaddr_in saddr;
1977 socklen_t saddr_len;
1980 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1981 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1982 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1986 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1988 if (saddr.sin_addr.s_addr==0) {
1989 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1993 /* clone dgram socket */
1994 newfd = net_socket_mcast_create(&saddr);
1996 /* error already reported by net_socket_mcast_create() */
2000 /* clone newfd to fd, close newfd */
2005 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2006 fd, strerror(errno));
2011 s = qemu_mallocz(sizeof(NetSocketState));
2014 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
2015 net_socket_receive_dgram, NULL,
2016 net_socket_cleanup, s);
2017 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2019 /* mcast: save bound address as dst */
2020 if (is_connected) s->dgram_dst=saddr;
2022 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2023 "socket: fd=%d (%s mcast=%s:%d)",
2024 fd, is_connected? "cloned" : "",
2025 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2029 static void net_socket_connect(void *opaque)
2031 NetSocketState *s = opaque;
2032 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2035 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2038 int fd, int is_connected)
2041 s = qemu_mallocz(sizeof(NetSocketState));
2043 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
2044 net_socket_receive, NULL,
2045 net_socket_cleanup, s);
2046 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2047 "socket: fd=%d", fd);
2049 net_socket_connect(s);
2051 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2056 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2057 const char *model, const char *name,
2058 int fd, int is_connected)
2060 int so_type = -1, optlen=sizeof(so_type);
2062 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2063 (socklen_t *)&optlen)< 0) {
2064 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2069 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2071 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2073 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2074 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2075 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2080 static void net_socket_accept(void *opaque)
2082 NetSocketListenState *s = opaque;
2084 struct sockaddr_in saddr;
2089 len = sizeof(saddr);
2090 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2091 if (fd < 0 && errno != EINTR) {
2093 } else if (fd >= 0) {
2097 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2101 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2102 "socket: connection from %s:%d",
2103 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2107 static int net_socket_listen_init(VLANState *vlan,
2110 const char *host_str)
2112 NetSocketListenState *s;
2114 struct sockaddr_in saddr;
2116 if (parse_host_port(&saddr, host_str) < 0)
2119 s = qemu_mallocz(sizeof(NetSocketListenState));
2121 fd = socket(PF_INET, SOCK_STREAM, 0);
2126 socket_set_nonblock(fd);
2128 /* allow fast reuse */
2130 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2132 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2137 ret = listen(fd, 0);
2143 s->model = qemu_strdup(model);
2144 s->name = name ? qemu_strdup(name) : NULL;
2146 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2150 static int net_socket_connect_init(VLANState *vlan,
2153 const char *host_str)
2156 int fd, connected, ret, err;
2157 struct sockaddr_in saddr;
2159 if (parse_host_port(&saddr, host_str) < 0)
2162 fd = socket(PF_INET, SOCK_STREAM, 0);
2167 socket_set_nonblock(fd);
2171 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2173 err = socket_error();
2174 if (err == EINTR || err == EWOULDBLOCK) {
2175 } else if (err == EINPROGRESS) {
2178 } else if (err == WSAEALREADY) {
2191 s = net_socket_fd_init(vlan, model, name, fd, connected);
2194 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2195 "socket: connect to %s:%d",
2196 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2200 static int net_socket_mcast_init(VLANState *vlan,
2203 const char *host_str)
2207 struct sockaddr_in saddr;
2209 if (parse_host_port(&saddr, host_str) < 0)
2213 fd = net_socket_mcast_create(&saddr);
2217 s = net_socket_fd_init(vlan, model, name, fd, 0);
2221 s->dgram_dst = saddr;
2223 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2224 "socket: mcast=%s:%d",
2225 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2230 typedef struct DumpState {
2231 VLANClientState *pcap_vc;
2236 #define PCAP_MAGIC 0xa1b2c3d4
2238 struct pcap_file_hdr {
2240 uint16_t version_major;
2241 uint16_t version_minor;
2248 struct pcap_sf_pkthdr {
2257 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2259 DumpState *s = vc->opaque;
2260 struct pcap_sf_pkthdr hdr;
2264 /* Early return in case of previous error. */
2269 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
2270 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2272 hdr.ts.tv_sec = ts / 1000000;
2273 hdr.ts.tv_usec = ts % 1000000;
2274 hdr.caplen = caplen;
2276 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2277 write(s->fd, buf, caplen) != caplen) {
2278 qemu_log("-net dump write error - stop dump\n");
2286 static void net_dump_cleanup(VLANClientState *vc)
2288 DumpState *s = vc->opaque;
2294 static int net_dump_init(VLANState *vlan, const char *device,
2295 const char *name, const char *filename, int len)
2297 struct pcap_file_hdr hdr;
2300 s = qemu_malloc(sizeof(DumpState));
2302 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2304 qemu_error("-net dump: can't open %s\n", filename);
2308 s->pcap_caplen = len;
2310 hdr.magic = PCAP_MAGIC;
2311 hdr.version_major = 2;
2312 hdr.version_minor = 4;
2315 hdr.snaplen = s->pcap_caplen;
2318 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2319 qemu_error("-net dump write error: %s\n", strerror(errno));
2325 s->pcap_vc = qemu_new_vlan_client(vlan, NULL, device, name, NULL,
2327 net_dump_cleanup, s);
2328 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2329 "dump to %s (len=%d)", filename, len);
2333 /* find or alloc a new VLAN */
2334 VLANState *qemu_find_vlan(int id, int allocate)
2338 QTAILQ_FOREACH(vlan, &vlans, next) {
2339 if (vlan->id == id) {
2348 vlan = qemu_mallocz(sizeof(VLANState));
2350 QTAILQ_INIT(&vlan->clients);
2351 QTAILQ_INIT(&vlan->send_queue);
2353 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2358 static VLANClientState *qemu_find_netdev(const char *id)
2360 VLANClientState *vc;
2362 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2363 if (!strcmp(vc->name, id)) {
2371 static int nic_get_free_idx(void)
2375 for (index = 0; index < MAX_NICS; index++)
2376 if (!nd_table[index].used)
2381 int qemu_show_nic_models(const char *arg, const char *const *models)
2385 if (!arg || strcmp(arg, "?"))
2388 fprintf(stderr, "qemu: Supported NIC models: ");
2389 for (i = 0 ; models[i]; i++)
2390 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2394 void qemu_check_nic_model(NICInfo *nd, const char *model)
2396 const char *models[2];
2401 if (qemu_show_nic_models(nd->model, models))
2403 if (qemu_find_nic_model(nd, models, model) < 0)
2407 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2408 const char *default_model)
2413 nd->model = qemu_strdup(default_model);
2415 for (i = 0 ; models[i]; i++) {
2416 if (strcmp(nd->model, models[i]) == 0)
2420 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2424 static int net_handle_fd_param(Monitor *mon, const char *param)
2426 if (!qemu_isdigit(param[0])) {
2429 fd = monitor_get_fd(mon, param);
2431 qemu_error("No file descriptor named %s found", param);
2437 return strtol(param, NULL, 0);
2441 static int net_init_nic(QemuOpts *opts,
2450 idx = nic_get_free_idx();
2451 if (idx == -1 || nb_nics >= MAX_NICS) {
2452 qemu_error("Too Many NICs\n");
2456 nd = &nd_table[idx];
2458 memset(nd, 0, sizeof(*nd));
2460 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2461 nd->netdev = qemu_find_netdev(netdev);
2463 qemu_error("netdev '%s' not found\n", netdev);
2471 nd->name = qemu_strdup(name);
2473 if (qemu_opt_get(opts, "model")) {
2474 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2476 if (qemu_opt_get(opts, "addr")) {
2477 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2480 nd->macaddr[0] = 0x52;
2481 nd->macaddr[1] = 0x54;
2482 nd->macaddr[2] = 0x00;
2483 nd->macaddr[3] = 0x12;
2484 nd->macaddr[4] = 0x34;
2485 nd->macaddr[5] = 0x56 + idx;
2487 if (qemu_opt_get(opts, "macaddr") &&
2488 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2489 qemu_error("invalid syntax for ethernet address\n");
2493 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2494 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2495 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2496 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2502 nd->vlan->nb_guest_devs++;
2509 #if defined(CONFIG_SLIRP)
2510 static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2512 struct slirp_config_str *config;
2514 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2518 config = qemu_mallocz(sizeof(*config));
2520 pstrcpy(config->str, sizeof(config->str), value);
2522 if (!strcmp(name, "hostfwd")) {
2523 config->flags = SLIRP_CFG_HOSTFWD;
2526 config->next = slirp_configs;
2527 slirp_configs = config;
2532 static int net_init_slirp(QemuOpts *opts,
2537 struct slirp_config_str *config;
2539 const char *vhostname;
2540 const char *vdhcp_start;
2541 const char *vnamesrv;
2542 const char *tftp_export;
2543 const char *bootfile;
2544 const char *smb_export;
2545 const char *vsmbsrv;
2550 vhost = qemu_opt_get(opts, "host");
2551 vhostname = qemu_opt_get(opts, "hostname");
2552 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2553 vnamesrv = qemu_opt_get(opts, "dns");
2554 tftp_export = qemu_opt_get(opts, "tftp");
2555 bootfile = qemu_opt_get(opts, "bootfile");
2556 smb_export = qemu_opt_get(opts, "smb");
2557 vsmbsrv = qemu_opt_get(opts, "smbserver");
2559 if (qemu_opt_get(opts, "ip")) {
2560 const char *ip = qemu_opt_get(opts, "ip");
2561 int l = strlen(ip) + strlen("/24") + 1;
2563 vnet = qemu_malloc(l);
2565 /* emulate legacy ip= parameter */
2566 pstrcpy(vnet, l, ip);
2567 pstrcat(vnet, l, "/24");
2570 if (qemu_opt_get(opts, "net")) {
2574 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2577 if (qemu_opt_get(opts, "restrict") &&
2578 qemu_opt_get(opts, "restrict")[0] == 'y') {
2582 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2584 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2585 vhostname, tftp_export, bootfile, vdhcp_start,
2586 vnamesrv, smb_export, vsmbsrv);
2588 while (slirp_configs) {
2589 config = slirp_configs;
2590 slirp_configs = config->next;
2594 if (ret != -1 && vlan) {
2595 vlan->nb_host_devs++;
2602 #endif /* CONFIG_SLIRP */
2605 static int net_init_tap_win32(QemuOpts *opts,
2612 ifname = qemu_opt_get(opts, "ifname");
2615 qemu_error("tap: no interface name\n");
2619 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2624 vlan->nb_host_devs++;
2629 #elif !defined(_AIX)
2630 static int net_init_tap(QemuOpts *opts,
2637 if (qemu_opt_get(opts, "fd")) {
2640 if (qemu_opt_get(opts, "ifname") ||
2641 qemu_opt_get(opts, "script") ||
2642 qemu_opt_get(opts, "downscript")) {
2643 qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
2647 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2652 fcntl(fd, F_SETFL, O_NONBLOCK);
2654 s = net_tap_fd_init(vlan, "tap", name, fd);
2659 const char *ifname, *script, *downscript;
2661 ifname = qemu_opt_get(opts, "ifname");
2662 script = qemu_opt_get(opts, "script");
2663 downscript = qemu_opt_get(opts, "downscript");
2666 script = DEFAULT_NETWORK_SCRIPT;
2669 downscript = DEFAULT_NETWORK_DOWN_SCRIPT;
2672 s = net_tap_init(vlan, "tap", name, ifname, script, downscript);
2679 if (tap_set_sndbuf(s, opts) < 0) {
2684 vlan->nb_host_devs++;
2691 static int net_init_socket(QemuOpts *opts,
2696 if (qemu_opt_get(opts, "fd")) {
2699 if (qemu_opt_get(opts, "listen") ||
2700 qemu_opt_get(opts, "connect") ||
2701 qemu_opt_get(opts, "mcast")) {
2702 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2706 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2711 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2715 } else if (qemu_opt_get(opts, "listen")) {
2718 if (qemu_opt_get(opts, "fd") ||
2719 qemu_opt_get(opts, "connect") ||
2720 qemu_opt_get(opts, "mcast")) {
2721 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2725 listen = qemu_opt_get(opts, "listen");
2727 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2730 } else if (qemu_opt_get(opts, "connect")) {
2731 const char *connect;
2733 if (qemu_opt_get(opts, "fd") ||
2734 qemu_opt_get(opts, "listen") ||
2735 qemu_opt_get(opts, "mcast")) {
2736 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2740 connect = qemu_opt_get(opts, "connect");
2742 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2745 } else if (qemu_opt_get(opts, "mcast")) {
2748 if (qemu_opt_get(opts, "fd") ||
2749 qemu_opt_get(opts, "connect") ||
2750 qemu_opt_get(opts, "listen")) {
2751 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2755 mcast = qemu_opt_get(opts, "mcast");
2757 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2761 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2766 vlan->nb_host_devs++;
2773 static int net_init_vde(QemuOpts *opts,
2782 sock = qemu_opt_get(opts, "sock");
2783 group = qemu_opt_get(opts, "group");
2785 port = qemu_opt_get_number(opts, "port", 0);
2786 mode = qemu_opt_get_number(opts, "mode", 0700);
2788 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2793 vlan->nb_host_devs++;
2800 static int net_init_dump(QemuOpts *opts,
2811 file = qemu_opt_get(opts, "file");
2813 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2817 len = qemu_opt_get_size(opts, "len", 65536);
2819 return net_dump_init(vlan, "dump", name, file, len);
2822 #define NET_COMMON_PARAMS_DESC \
2825 .type = QEMU_OPT_STRING, \
2826 .help = "net client type (nic, tap etc.)", \
2829 .type = QEMU_OPT_NUMBER, \
2830 .help = "vlan number", \
2833 .type = QEMU_OPT_STRING, \
2834 .help = "identifier for monitor commands", \
2837 typedef int (*net_client_init_func)(QemuOpts *opts,
2842 /* magic number, but compiler will warn if too small */
2843 #define NET_MAX_DESC 20
2847 net_client_init_func init;
2848 QemuOptDesc desc[NET_MAX_DESC];
2849 } net_client_types[] = {
2853 NET_COMMON_PARAMS_DESC,
2854 { /* end of list */ }
2858 .init = net_init_nic,
2860 NET_COMMON_PARAMS_DESC,
2863 .type = QEMU_OPT_STRING,
2864 .help = "id of -netdev to connect to",
2868 .type = QEMU_OPT_STRING,
2869 .help = "MAC address",
2872 .type = QEMU_OPT_STRING,
2873 .help = "device model (e1000, rtl8139, virtio etc.)",
2876 .type = QEMU_OPT_STRING,
2877 .help = "PCI device address",
2880 .type = QEMU_OPT_NUMBER,
2881 .help = "number of MSI-x vectors, 0 to disable MSI-X",
2883 { /* end of list */ }
2888 .init = net_init_slirp,
2890 NET_COMMON_PARAMS_DESC,
2893 .type = QEMU_OPT_STRING,
2894 .help = "client hostname reported by the builtin DHCP server",
2897 .type = QEMU_OPT_STRING,
2898 .help = "isolate the guest from the host (y|yes|n|no)",
2901 .type = QEMU_OPT_STRING,
2902 .help = "legacy parameter, use net= instead",
2905 .type = QEMU_OPT_STRING,
2906 .help = "IP address and optional netmask",
2909 .type = QEMU_OPT_STRING,
2910 .help = "guest-visible address of the host",
2913 .type = QEMU_OPT_STRING,
2914 .help = "root directory of the built-in TFTP server",
2917 .type = QEMU_OPT_STRING,
2918 .help = "BOOTP filename, for use with tftp=",
2920 .name = "dhcpstart",
2921 .type = QEMU_OPT_STRING,
2922 .help = "the first of the 16 IPs the built-in DHCP server can assign",
2925 .type = QEMU_OPT_STRING,
2926 .help = "guest-visible address of the virtual nameserver",
2929 .type = QEMU_OPT_STRING,
2930 .help = "root directory of the built-in SMB server",
2932 .name = "smbserver",
2933 .type = QEMU_OPT_STRING,
2934 .help = "IP address of the built-in SMB server",
2937 .type = QEMU_OPT_STRING,
2938 .help = "guest port number to forward incoming TCP or UDP connections",
2941 .type = QEMU_OPT_STRING,
2942 .help = "IP address and port to forward guest TCP connections",
2944 { /* end of list */ }
2950 .init = net_init_tap_win32,
2952 NET_COMMON_PARAMS_DESC,
2955 .type = QEMU_OPT_STRING,
2956 .help = "interface name",
2958 { /* end of list */ }
2960 #elif !defined(_AIX)
2963 .init = net_init_tap,
2965 NET_COMMON_PARAMS_DESC,
2968 .type = QEMU_OPT_STRING,
2969 .help = "file descriptor of an already opened tap",
2972 .type = QEMU_OPT_STRING,
2973 .help = "interface name",
2976 .type = QEMU_OPT_STRING,
2977 .help = "script to initialize the interface",
2979 .name = "downscript",
2980 .type = QEMU_OPT_STRING,
2981 .help = "script to shut down the interface",
2985 .type = QEMU_OPT_SIZE,
2986 .help = "send buffer limit"
2989 { /* end of list */ }
2994 .init = net_init_socket,
2996 NET_COMMON_PARAMS_DESC,
2999 .type = QEMU_OPT_STRING,
3000 .help = "file descriptor of an already opened socket",
3003 .type = QEMU_OPT_STRING,
3004 .help = "port number, and optional hostname, to listen on",
3007 .type = QEMU_OPT_STRING,
3008 .help = "port number, and optional hostname, to connect to",
3011 .type = QEMU_OPT_STRING,
3012 .help = "UDP multicast address and port number",
3014 { /* end of list */ }
3019 .init = net_init_vde,
3021 NET_COMMON_PARAMS_DESC,
3024 .type = QEMU_OPT_STRING,
3025 .help = "socket path",
3028 .type = QEMU_OPT_NUMBER,
3029 .help = "port number",
3032 .type = QEMU_OPT_STRING,
3033 .help = "group owner of socket",
3036 .type = QEMU_OPT_NUMBER,
3037 .help = "permissions for socket",
3039 { /* end of list */ }
3044 .init = net_init_dump,
3046 NET_COMMON_PARAMS_DESC,
3049 .type = QEMU_OPT_SIZE,
3050 .help = "per-packet size limit (64k default)",
3053 .type = QEMU_OPT_STRING,
3054 .help = "dump file path (default is qemu-vlan0.pcap)",
3056 { /* end of list */ }
3059 { /* end of list */ }
3062 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
3068 type = qemu_opt_get(opts, "type");
3070 qemu_error("No type specified for -net\n");
3075 if (strcmp(type, "tap") != 0 &&
3077 strcmp(type, "user") != 0 &&
3080 strcmp(type, "vde") != 0 &&
3082 strcmp(type, "socket") != 0) {
3083 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3088 if (qemu_opt_get(opts, "vlan")) {
3089 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3092 if (qemu_opt_get(opts, "name")) {
3093 qemu_error("The 'name' parameter is not valid with -netdev\n");
3096 if (!qemu_opts_id(opts)) {
3097 qemu_error("The id= parameter is required with -netdev\n");
3102 name = qemu_opts_id(opts);
3104 name = qemu_opt_get(opts, "name");
3107 for (i = 0; net_client_types[i].type != NULL; i++) {
3108 if (!strcmp(net_client_types[i].type, type)) {
3109 VLANState *vlan = NULL;
3111 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3115 /* Do not add to a vlan if it's a -netdev or a nic with a
3116 * netdev= parameter. */
3118 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
3119 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3122 if (net_client_types[i].init) {
3123 return net_client_types[i].init(opts, mon, name, vlan);
3130 qemu_error("Invalid -net type '%s'\n", type);
3134 void net_client_uninit(NICInfo *nd)
3137 nd->vlan->nb_guest_devs--;
3141 qemu_free(nd->model);
3142 qemu_free(nd->name);
3143 qemu_free(nd->devaddr);
3148 static int net_host_check_device(const char *device)
3151 const char *valid_param_list[] = { "tap", "socket", "dump"
3159 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3160 if (!strncmp(valid_param_list[i], device,
3161 strlen(valid_param_list[i])))
3168 void net_host_device_add(Monitor *mon, const QDict *qdict)
3170 const char *device = qdict_get_str(qdict, "device");
3171 const char *opts_str = qdict_get_try_str(qdict, "opts");
3174 if (!net_host_check_device(device)) {
3175 monitor_printf(mon, "invalid host network device %s\n", device);
3179 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3181 monitor_printf(mon, "parsing network options '%s' failed\n",
3182 opts_str ? opts_str : "");
3186 qemu_opt_set(opts, "type", device);
3188 if (net_client_init(mon, opts, 0) < 0) {
3189 monitor_printf(mon, "adding host network device %s failed\n", device);
3193 void net_host_device_remove(Monitor *mon, const QDict *qdict)
3195 VLANClientState *vc;
3196 int vlan_id = qdict_get_int(qdict, "vlan_id");
3197 const char *device = qdict_get_str(qdict, "device");
3199 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
3203 if (!net_host_check_device(vc->model)) {
3204 monitor_printf(mon, "invalid host network device %s\n", device);
3207 qemu_del_vlan_client(vc);
3210 void net_set_boot_mask(int net_boot_mask)
3214 /* Only the first four NICs may be bootable */
3215 net_boot_mask = net_boot_mask & 0xF;
3217 for (i = 0; i < nb_nics; i++) {
3218 if (net_boot_mask & (1 << i)) {
3219 nd_table[i].bootable = 1;
3220 net_boot_mask &= ~(1 << i);
3224 if (net_boot_mask) {
3225 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3230 void do_info_network(Monitor *mon)
3234 QTAILQ_FOREACH(vlan, &vlans, next) {
3235 VLANClientState *vc;
3237 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
3239 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3240 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
3245 void do_set_link(Monitor *mon, const QDict *qdict)
3248 VLANClientState *vc = NULL;
3249 const char *name = qdict_get_str(qdict, "name");
3250 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
3252 QTAILQ_FOREACH(vlan, &vlans, next) {
3253 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3254 if (strcmp(vc->name, name) == 0) {
3262 monitor_printf(mon, "could not find network device '%s'\n", name);
3266 if (strcmp(up_or_down, "up") == 0)
3268 else if (strcmp(up_or_down, "down") == 0)
3271 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3272 "valid\n", up_or_down);
3274 if (vc->link_status_changed)
3275 vc->link_status_changed(vc);
3278 void net_cleanup(void)
3281 VLANClientState *vc, *next_vc;
3283 QTAILQ_FOREACH(vlan, &vlans, next) {
3284 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
3285 qemu_del_vlan_client(vc);
3289 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3290 qemu_del_vlan_client(vc);
3294 static void net_check_clients(void)
3298 QTAILQ_FOREACH(vlan, &vlans, next) {
3299 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3301 if (vlan->nb_guest_devs == 0)
3302 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3303 if (vlan->nb_host_devs == 0)
3305 "Warning: vlan %d is not connected to host network\n",
3310 static int net_init_client(QemuOpts *opts, void *dummy)
3312 return net_client_init(NULL, opts, 0);
3315 static int net_init_netdev(QemuOpts *opts, void *dummy)
3317 return net_client_init(NULL, opts, 1);
3320 int net_init_clients(void)
3322 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3323 /* if no clients, we use a default config */
3324 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3326 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3330 QTAILQ_INIT(&vlans);
3331 QTAILQ_INIT(&non_vlan_clients);
3333 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3336 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3340 net_check_clients();
3345 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
3347 #if defined(CONFIG_SLIRP)
3348 /* handle legacy -net channel,port:chr */
3349 if (!strcmp(opts_list->name, "net") &&
3350 !strncmp(optarg, "channel,", strlen("channel,"))) {
3353 optarg += strlen("channel,");
3355 if (QTAILQ_EMPTY(&slirp_stacks)) {
3356 struct slirp_config_str *config;
3358 config = qemu_malloc(sizeof(*config));
3359 pstrcpy(config->str, sizeof(config->str), optarg);
3360 config->flags = SLIRP_CFG_LEGACY;
3361 config->next = slirp_configs;
3362 slirp_configs = config;
3365 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3371 if (!qemu_opts_parse(opts_list, optarg, "type")) {