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"
116 #include "qemu-queue.h"
119 static VLANState *first_vlan;
121 /***********************************************************/
122 /* network device redirectors */
124 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
125 static void hex_dump(FILE *f, const uint8_t *buf, int size)
129 for(i=0;i<size;i+=16) {
133 fprintf(f, "%08x ", i);
136 fprintf(f, " %02x", buf[i+j]);
143 if (c < ' ' || c > '~')
152 static int parse_macaddr(uint8_t *macaddr, const char *p)
159 offset = strtol(p, &last_char, 0);
160 if (0 == errno && '\0' == *last_char &&
161 offset >= 0 && offset <= 0xFFFFFF) {
162 macaddr[3] = (offset & 0xFF0000) >> 16;
163 macaddr[4] = (offset & 0xFF00) >> 8;
164 macaddr[5] = offset & 0xFF;
167 for(i = 0; i < 6; i++) {
168 macaddr[i] = strtol(p, (char **)&p, 16);
173 if (*p != ':' && *p != '-')
184 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
195 if (len > buf_size - 1)
204 int parse_host_src_port(struct sockaddr_in *haddr,
205 struct sockaddr_in *saddr,
206 const char *input_str)
208 char *str = strdup(input_str);
209 char *host_str = str;
211 const char *src_str2;
215 * Chop off any extra arguments at the end of the string which
216 * would start with a comma, then fill in the src port information
217 * if it was provided else use the "any address" and "any port".
219 if ((ptr = strchr(str,',')))
222 if ((src_str = strchr(input_str,'@'))) {
227 if (parse_host_port(haddr, host_str) < 0)
231 if (!src_str || *src_str == '\0')
234 if (parse_host_port(saddr, src_str2) < 0)
245 int parse_host_port(struct sockaddr_in *saddr, const char *str)
253 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
255 saddr->sin_family = AF_INET;
256 if (buf[0] == '\0') {
257 saddr->sin_addr.s_addr = 0;
259 if (qemu_isdigit(buf[0])) {
260 if (!inet_aton(buf, &saddr->sin_addr))
263 if ((he = gethostbyname(buf)) == NULL)
265 saddr->sin_addr = *(struct in_addr *)he->h_addr;
268 port = strtol(p, (char **)&r, 0);
271 saddr->sin_port = htons(port);
275 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
277 snprintf(vc->info_str, sizeof(vc->info_str),
278 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
280 macaddr[0], macaddr[1], macaddr[2],
281 macaddr[3], macaddr[4], macaddr[5]);
284 static char *assign_name(VLANClientState *vc1, const char *model)
290 for (vlan = first_vlan; vlan; vlan = vlan->next) {
293 for (vc = vlan->first_client; vc; vc = vc->next)
294 if (vc != vc1 && strcmp(vc->model, model) == 0)
298 snprintf(buf, sizeof(buf), "%s.%d", model, id);
300 return qemu_strdup(buf);
303 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
306 NetCanReceive *can_receive,
308 NetReceiveIOV *receive_iov,
312 VLANClientState *vc, **pvc;
313 vc = qemu_mallocz(sizeof(VLANClientState));
314 vc->model = qemu_strdup(model);
316 vc->name = qemu_strdup(name);
318 vc->name = assign_name(vc, model);
319 vc->can_receive = can_receive;
320 vc->receive = receive;
321 vc->receive_iov = receive_iov;
322 vc->cleanup = cleanup;
327 pvc = &vlan->first_client;
334 void qemu_del_vlan_client(VLANClientState *vc)
336 VLANClientState **pvc = &vc->vlan->first_client;
345 qemu_free(vc->model);
352 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
354 VLANClientState **pvc = &vlan->first_client;
357 if ((*pvc)->opaque == opaque)
365 static VLANClientState *
366 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
367 const char *client_str)
372 vlan = qemu_find_vlan(vlan_id, 0);
374 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
378 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
379 if (!strcmp(vc->name, client_str)) {
384 monitor_printf(mon, "can't find device %s on VLAN %d\n",
385 client_str, vlan_id);
391 int qemu_can_send_packet(VLANClientState *sender)
393 VLANState *vlan = sender->vlan;
396 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
401 /* no can_receive() handler, they can always receive */
402 if (!vc->can_receive || vc->can_receive(vc)) {
410 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
415 sender->vlan->delivering = 1;
417 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
429 len = vc->receive(vc, buf, size);
431 ret = (ret >= 0) ? ret : len;
434 sender->vlan->delivering = 0;
439 void qemu_purge_queued_packets(VLANClientState *vc)
441 VLANPacket *packet, *next;
443 QTAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
444 if (packet->sender == vc) {
445 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
451 void qemu_flush_queued_packets(VLANClientState *vc)
453 while (!QTAILQ_EMPTY(&vc->vlan->send_queue)) {
457 packet = QTAILQ_FIRST(&vc->vlan->send_queue);
458 QTAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
460 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
461 if (ret == 0 && packet->sent_cb != NULL) {
462 QTAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
467 packet->sent_cb(packet->sender, ret);
473 static void qemu_enqueue_packet(VLANClientState *sender,
474 const uint8_t *buf, int size,
475 NetPacketSent *sent_cb)
479 packet = qemu_malloc(sizeof(VLANPacket) + size);
480 packet->sender = sender;
482 packet->sent_cb = sent_cb;
483 memcpy(packet->data, buf, size);
485 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
488 ssize_t qemu_send_packet_async(VLANClientState *sender,
489 const uint8_t *buf, int size,
490 NetPacketSent *sent_cb)
494 if (sender->link_down) {
499 printf("vlan %d send:\n", sender->vlan->id);
500 hex_dump(stdout, buf, size);
503 if (sender->vlan->delivering) {
504 qemu_enqueue_packet(sender, buf, size, NULL);
508 ret = qemu_deliver_packet(sender, buf, size);
509 if (ret == 0 && sent_cb != NULL) {
510 qemu_enqueue_packet(sender, buf, size, sent_cb);
514 qemu_flush_queued_packets(sender);
519 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
521 qemu_send_packet_async(vc, buf, size, NULL);
524 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
527 uint8_t buffer[4096];
531 for (i = 0; i < iovcnt; i++) {
534 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
535 memcpy(buffer + offset, iov[i].iov_base, len);
539 return vc->receive(vc, buffer, offset);
542 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
547 for (i = 0; i < iovcnt; i++)
548 offset += iov[i].iov_len;
552 static int qemu_deliver_packet_iov(VLANClientState *sender,
553 const struct iovec *iov, int iovcnt)
558 sender->vlan->delivering = 1;
560 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
568 ret = calc_iov_length(iov, iovcnt);
572 if (vc->receive_iov) {
573 len = vc->receive_iov(vc, iov, iovcnt);
575 len = vc_sendv_compat(vc, iov, iovcnt);
578 ret = (ret >= 0) ? ret : len;
581 sender->vlan->delivering = 0;
586 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
587 const struct iovec *iov, int iovcnt,
588 NetPacketSent *sent_cb)
594 max_len = calc_iov_length(iov, iovcnt);
596 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
597 packet->sender = sender;
598 packet->sent_cb = sent_cb;
601 for (i = 0; i < iovcnt; i++) {
602 size_t len = iov[i].iov_len;
604 memcpy(packet->data + packet->size, iov[i].iov_base, len);
608 QTAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
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) {
620 return calc_iov_length(iov, iovcnt);
623 if (sender->vlan->delivering) {
624 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
627 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
628 if (ret == 0 && sent_cb != NULL) {
629 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
633 qemu_flush_queued_packets(sender);
639 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
641 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
644 #if defined(CONFIG_SLIRP)
646 /* slirp network adapter */
648 #define SLIRP_CFG_HOSTFWD 1
649 #define SLIRP_CFG_LEGACY 2
651 struct slirp_config_str {
652 struct slirp_config_str *next;
658 typedef struct SlirpState {
659 QTAILQ_ENTRY(SlirpState) entry;
667 static struct slirp_config_str *slirp_configs;
668 const char *legacy_tftp_prefix;
669 const char *legacy_bootp_filename;
670 static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
671 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
673 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
675 static int slirp_guestfwd(SlirpState *s, const char *config_str,
679 static const char *legacy_smb_export;
681 static int slirp_smb(SlirpState *s, const char *exported_dir,
682 struct in_addr vserver_addr);
683 static void slirp_smb_cleanup(SlirpState *s);
685 static inline void slirp_smb_cleanup(SlirpState *s) { }
688 int slirp_can_output(void *opaque)
690 SlirpState *s = opaque;
692 return qemu_can_send_packet(s->vc);
695 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
697 SlirpState *s = opaque;
700 printf("slirp output:\n");
701 hex_dump(stdout, pkt, pkt_len);
703 qemu_send_packet(s->vc, pkt, pkt_len);
706 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
708 SlirpState *s = vc->opaque;
711 printf("slirp input:\n");
712 hex_dump(stdout, buf, size);
714 slirp_input(s->slirp, buf, size);
718 static void net_slirp_cleanup(VLANClientState *vc)
720 SlirpState *s = vc->opaque;
722 slirp_cleanup(s->slirp);
723 slirp_smb_cleanup(s);
724 QTAILQ_REMOVE(&slirp_stacks, s, entry);
728 static int net_slirp_init(VLANState *vlan, const char *model,
729 const char *name, int restricted,
730 const char *vnetwork, const char *vhost,
731 const char *vhostname, const char *tftp_export,
732 const char *bootfile, const char *vdhcp_start,
733 const char *vnameserver, const char *smb_export,
734 const char *vsmbserver)
736 /* default settings according to historic slirp */
737 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
738 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
739 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
740 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
741 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
743 struct in_addr smbsrv = { .s_addr = 0 };
750 struct slirp_config_str *config;
753 tftp_export = legacy_tftp_prefix;
756 bootfile = legacy_bootp_filename;
760 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
761 if (!inet_aton(vnetwork, &net)) {
764 addr = ntohl(net.s_addr);
765 if (!(addr & 0x80000000)) {
766 mask.s_addr = htonl(0xff000000); /* class A */
767 } else if ((addr & 0xfff00000) == 0xac100000) {
768 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
769 } else if ((addr & 0xc0000000) == 0x80000000) {
770 mask.s_addr = htonl(0xffff0000); /* class B */
771 } else if ((addr & 0xffff0000) == 0xc0a80000) {
772 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
773 } else if ((addr & 0xffff0000) == 0xc6120000) {
774 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
775 } else if ((addr & 0xe0000000) == 0xe0000000) {
776 mask.s_addr = htonl(0xffffff00); /* class C */
778 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
781 if (!inet_aton(buf, &net)) {
784 shift = strtol(vnetwork, &end, 10);
786 if (!inet_aton(vnetwork, &mask)) {
789 } else if (shift < 4 || shift > 32) {
792 mask.s_addr = htonl(0xffffffff << (32 - shift));
795 net.s_addr &= mask.s_addr;
796 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
797 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
798 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
801 if (vhost && !inet_aton(vhost, &host)) {
804 if ((host.s_addr & mask.s_addr) != net.s_addr) {
808 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
811 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
812 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
816 if (vnameserver && !inet_aton(vnameserver, &dns)) {
819 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
820 dns.s_addr == host.s_addr) {
825 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
830 s = qemu_mallocz(sizeof(SlirpState));
831 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
832 tftp_export, bootfile, dhcp, dns, s);
833 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
835 for (config = slirp_configs; config; config = config->next) {
836 if (config->flags & SLIRP_CFG_HOSTFWD) {
837 if (slirp_hostfwd(s, config->str,
838 config->flags & SLIRP_CFG_LEGACY) < 0)
841 if (slirp_guestfwd(s, config->str,
842 config->flags & SLIRP_CFG_LEGACY) < 0)
848 smb_export = legacy_smb_export;
851 if (slirp_smb(s, smb_export, smbsrv) < 0)
856 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
857 net_slirp_cleanup, s);
858 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
859 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
863 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
869 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
873 if (strcmp(vc->model, "user")) {
874 monitor_printf(mon, "invalid device specified\n");
879 if (QTAILQ_EMPTY(&slirp_stacks)) {
880 monitor_printf(mon, "user mode network stack not in use\n");
883 return QTAILQ_FIRST(&slirp_stacks);
887 void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
889 struct in_addr host_addr = { .s_addr = INADDR_ANY };
892 const char *src_str, *p;
896 const char *arg1 = qdict_get_str(qdict, "arg1");
897 const char *arg2 = qdict_get_try_str(qdict, "arg2");
898 const char *arg3 = qdict_get_try_str(qdict, "arg3");
901 s = slirp_lookup(mon, arg1, arg2);
904 s = slirp_lookup(mon, NULL, NULL);
911 if (!src_str || !src_str[0])
915 get_str_sep(buf, sizeof(buf), &p, ':');
917 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
919 } else if (!strcmp(buf, "udp")) {
925 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
928 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
934 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
935 host_addr, host_port);
937 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
938 err ? "removed" : "not found");
942 monitor_printf(mon, "invalid format\n");
945 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
948 struct in_addr host_addr = { .s_addr = INADDR_ANY };
949 struct in_addr guest_addr = { .s_addr = 0 };
950 int host_port, guest_port;
957 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
960 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
962 } else if (!strcmp(buf, "udp")) {
968 if (!legacy_format) {
969 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
972 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
977 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
980 host_port = strtol(buf, &end, 0);
981 if (*end != '\0' || host_port < 1 || host_port > 65535) {
985 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
988 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
992 guest_port = strtol(p, &end, 0);
993 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
997 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
999 qemu_error("could not set up host forwarding rule '%s'\n",
1006 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
1010 void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
1012 const char *redir_str;
1014 const char *arg1 = qdict_get_str(qdict, "arg1");
1015 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1016 const char *arg3 = qdict_get_try_str(qdict, "arg3");
1019 s = slirp_lookup(mon, arg1, arg2);
1022 s = slirp_lookup(mon, NULL, NULL);
1026 slirp_hostfwd(s, redir_str, 0);
1031 int net_slirp_redir(const char *redir_str)
1033 struct slirp_config_str *config;
1035 if (QTAILQ_EMPTY(&slirp_stacks)) {
1036 config = qemu_malloc(sizeof(*config));
1037 pstrcpy(config->str, sizeof(config->str), redir_str);
1038 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1039 config->next = slirp_configs;
1040 slirp_configs = config;
1044 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
1049 /* automatic user mode samba server configuration */
1050 static void slirp_smb_cleanup(SlirpState *s)
1054 if (s->smb_dir[0] != '\0') {
1055 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1057 s->smb_dir[0] = '\0';
1061 static int slirp_smb(SlirpState* s, const char *exported_dir,
1062 struct in_addr vserver_addr)
1064 static int instance;
1066 char smb_cmdline[128];
1069 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1070 (long)getpid(), instance++);
1071 if (mkdir(s->smb_dir, 0700) < 0) {
1072 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
1075 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1077 f = fopen(smb_conf, "w");
1079 slirp_smb_cleanup(s);
1080 qemu_error("could not create samba server configuration file '%s'\n",
1088 "socket address=127.0.0.1\n"
1089 "pid directory=%s\n"
1090 "lock directory=%s\n"
1091 "log file=%s/log.smbd\n"
1092 "smb passwd file=%s/smbpasswd\n"
1093 "security = share\n"
1107 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1108 SMBD_COMMAND, smb_conf);
1110 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1111 slirp_smb_cleanup(s);
1112 qemu_error("conflicting/invalid smbserver address\n");
1118 /* automatic user mode samba server configuration (legacy interface) */
1119 int net_slirp_smb(const char *exported_dir)
1121 struct in_addr vserver_addr = { .s_addr = 0 };
1123 if (legacy_smb_export) {
1124 fprintf(stderr, "-smb given twice\n");
1127 legacy_smb_export = exported_dir;
1128 if (!QTAILQ_EMPTY(&slirp_stacks)) {
1129 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
1135 #endif /* !defined(_WIN32) */
1138 CharDriverState *hd;
1139 struct in_addr server;
1144 static int guestfwd_can_read(void *opaque)
1146 struct GuestFwd *fwd = opaque;
1147 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1150 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1152 struct GuestFwd *fwd = opaque;
1153 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1156 static int slirp_guestfwd(SlirpState *s, const char *config_str,
1159 struct in_addr server = { .s_addr = 0 };
1160 struct GuestFwd *fwd;
1167 if (legacy_format) {
1168 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1172 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1175 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1178 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1181 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1184 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1188 port = strtol(buf, &end, 10);
1189 if (*end != '\0' || port < 1 || port > 65535) {
1193 fwd = qemu_malloc(sizeof(struct GuestFwd));
1194 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1195 fwd->hd = qemu_chr_open(buf, p, NULL);
1197 qemu_error("could not open guest forwarding device '%s'\n", buf);
1202 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1203 qemu_error("conflicting/invalid host:port in guest forwarding "
1204 "rule '%s'\n", config_str);
1208 fwd->server = server;
1210 fwd->slirp = s->slirp;
1212 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1217 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
1221 void do_info_usernet(Monitor *mon)
1225 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
1226 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1227 slirp_connection_info(s->slirp, mon);
1231 #endif /* CONFIG_SLIRP */
1233 #if !defined(_WIN32)
1235 typedef struct TAPState {
1236 VLANClientState *vc;
1238 char down_script[1024];
1239 char down_script_arg[128];
1241 unsigned int read_poll : 1;
1242 unsigned int write_poll : 1;
1245 static int launch_script(const char *setup_script, const char *ifname, int fd);
1247 static int tap_can_send(void *opaque);
1248 static void tap_send(void *opaque);
1249 static void tap_writable(void *opaque);
1251 static void tap_update_fd_handler(TAPState *s)
1253 qemu_set_fd_handler2(s->fd,
1254 s->read_poll ? tap_can_send : NULL,
1255 s->read_poll ? tap_send : NULL,
1256 s->write_poll ? tap_writable : NULL,
1260 static void tap_read_poll(TAPState *s, int enable)
1262 s->read_poll = !!enable;
1263 tap_update_fd_handler(s);
1266 static void tap_write_poll(TAPState *s, int enable)
1268 s->write_poll = !!enable;
1269 tap_update_fd_handler(s);
1272 static void tap_writable(void *opaque)
1274 TAPState *s = opaque;
1276 tap_write_poll(s, 0);
1278 qemu_flush_queued_packets(s->vc);
1281 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1284 TAPState *s = vc->opaque;
1288 len = writev(s->fd, iov, iovcnt);
1289 } while (len == -1 && errno == EINTR);
1291 if (len == -1 && errno == EAGAIN) {
1292 tap_write_poll(s, 1);
1299 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1301 TAPState *s = vc->opaque;
1305 len = write(s->fd, buf, size);
1306 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1311 static int tap_can_send(void *opaque)
1313 TAPState *s = opaque;
1315 return qemu_can_send_packet(s->vc);
1319 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1324 sbuf.maxlen = maxlen;
1325 sbuf.buf = (char *)buf;
1327 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1330 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1332 return read(tapfd, buf, maxlen);
1336 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1338 TAPState *s = vc->opaque;
1339 tap_read_poll(s, 1);
1342 static void tap_send(void *opaque)
1344 TAPState *s = opaque;
1348 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1353 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1355 tap_read_poll(s, 0);
1361 /* sndbuf should be set to a value lower than the tx queue
1362 * capacity of any destination network interface.
1363 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1364 * a good default, given a 1500 byte MTU.
1366 #define TAP_DEFAULT_SNDBUF 1024*1024
1368 static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
1372 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
1377 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
1378 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
1384 static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
1388 #endif /* TUNSETSNDBUF */
1390 static void tap_cleanup(VLANClientState *vc)
1392 TAPState *s = vc->opaque;
1394 qemu_purge_queued_packets(vc);
1396 if (s->down_script[0])
1397 launch_script(s->down_script, s->down_script_arg, s->fd);
1399 tap_read_poll(s, 0);
1400 tap_write_poll(s, 0);
1407 static TAPState *net_tap_fd_init(VLANState *vlan,
1414 s = qemu_mallocz(sizeof(TAPState));
1416 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1417 tap_receive_iov, tap_cleanup, s);
1418 tap_read_poll(s, 1);
1419 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1423 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1424 static int tap_open(char *ifname, int ifname_size)
1430 TFR(fd = open("/dev/tap", O_RDWR));
1432 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1437 dev = devname(s.st_rdev, S_IFCHR);
1438 pstrcpy(ifname, ifname_size, dev);
1440 fcntl(fd, F_SETFL, O_NONBLOCK);
1443 #elif defined(__sun__)
1444 #define TUNNEWPPA (('T'<<16) | 0x0001)
1446 * Allocate TAP device, returns opened fd.
1447 * Stores dev name in the first arg(must be large enough).
1449 static int tap_alloc(char *dev, size_t dev_size)
1451 int tap_fd, if_fd, ppa = -1;
1452 static int ip_fd = 0;
1455 static int arp_fd = 0;
1456 int ip_muxid, arp_muxid;
1457 struct strioctl strioc_if, strioc_ppa;
1458 int link_type = I_PLINK;;
1460 char actual_name[32] = "";
1462 memset(&ifr, 0x0, sizeof(ifr));
1466 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1470 /* Check if IP device was opened */
1474 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1476 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1480 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1482 syslog(LOG_ERR, "Can't open /dev/tap");
1486 /* Assign a new PPA and get its unit number. */
1487 strioc_ppa.ic_cmd = TUNNEWPPA;
1488 strioc_ppa.ic_timout = 0;
1489 strioc_ppa.ic_len = sizeof(ppa);
1490 strioc_ppa.ic_dp = (char *)&ppa;
1491 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1492 syslog (LOG_ERR, "Can't assign new interface");
1494 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1496 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1499 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1500 syslog(LOG_ERR, "Can't push IP module");
1504 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1505 syslog(LOG_ERR, "Can't get flags\n");
1507 snprintf (actual_name, 32, "tap%d", ppa);
1508 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1511 /* Assign ppa according to the unit number returned by tun device */
1513 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1514 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1515 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1516 syslog (LOG_ERR, "Can't get flags\n");
1517 /* Push arp module to if_fd */
1518 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1519 syslog (LOG_ERR, "Can't push ARP module (2)");
1521 /* Push arp module to ip_fd */
1522 if (ioctl (ip_fd, I_POP, NULL) < 0)
1523 syslog (LOG_ERR, "I_POP failed\n");
1524 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1525 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1527 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1529 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1531 /* Set ifname to arp */
1532 strioc_if.ic_cmd = SIOCSLIFNAME;
1533 strioc_if.ic_timout = 0;
1534 strioc_if.ic_len = sizeof(ifr);
1535 strioc_if.ic_dp = (char *)𝔦
1536 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1537 syslog (LOG_ERR, "Can't set ifname to arp\n");
1540 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1541 syslog(LOG_ERR, "Can't link TAP device to IP");
1545 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1546 syslog (LOG_ERR, "Can't link TAP device to ARP");
1550 memset(&ifr, 0x0, sizeof(ifr));
1551 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1552 ifr.lifr_ip_muxid = ip_muxid;
1553 ifr.lifr_arp_muxid = arp_muxid;
1555 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1557 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1558 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1559 syslog (LOG_ERR, "Can't set multiplexor id");
1562 snprintf(dev, dev_size, "tap%d", ppa);
1566 static int tap_open(char *ifname, int ifname_size)
1570 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1571 fprintf(stderr, "Cannot allocate TAP device\n");
1574 pstrcpy(ifname, ifname_size, dev);
1575 fcntl(fd, F_SETFL, O_NONBLOCK);
1578 #elif defined (_AIX)
1579 static int tap_open(char *ifname, int ifname_size)
1581 fprintf (stderr, "no tap on AIX\n");
1585 static int tap_open(char *ifname, int ifname_size)
1590 TFR(fd = open("/dev/net/tun", O_RDWR));
1592 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1595 memset(&ifr, 0, sizeof(ifr));
1596 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1597 if (ifname[0] != '\0')
1598 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1600 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1601 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1603 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1607 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1608 fcntl(fd, F_SETFL, O_NONBLOCK);
1613 static int launch_script(const char *setup_script, const char *ifname, int fd)
1615 sigset_t oldmask, mask;
1621 sigaddset(&mask, SIGCHLD);
1622 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1624 /* try to launch network script */
1627 int open_max = sysconf(_SC_OPEN_MAX), i;
1629 for (i = 0; i < open_max; i++) {
1630 if (i != STDIN_FILENO &&
1631 i != STDOUT_FILENO &&
1632 i != STDERR_FILENO &&
1638 *parg++ = (char *)setup_script;
1639 *parg++ = (char *)ifname;
1641 execv(setup_script, args);
1643 } else if (pid > 0) {
1644 while (waitpid(pid, &status, 0) != pid) {
1647 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1649 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1653 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1657 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1658 const char *name, const char *ifname1,
1659 const char *setup_script, const char *down_script)
1665 if (ifname1 != NULL)
1666 pstrcpy(ifname, sizeof(ifname), ifname1);
1669 TFR(fd = tap_open(ifname, sizeof(ifname)));
1673 if (!setup_script || !strcmp(setup_script, "no"))
1675 if (setup_script[0] != '\0' &&
1676 launch_script(setup_script, ifname, fd)) {
1679 s = net_tap_fd_init(vlan, model, name, fd);
1680 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1681 "ifname=%s,script=%s,downscript=%s",
1682 ifname, setup_script, down_script);
1683 if (down_script && strcmp(down_script, "no")) {
1684 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1685 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1690 #endif /* !_WIN32 */
1692 #if defined(CONFIG_VDE)
1693 typedef struct VDEState {
1694 VLANClientState *vc;
1698 static void vde_to_qemu(void *opaque)
1700 VDEState *s = opaque;
1704 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1706 qemu_send_packet(s->vc, buf, size);
1710 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1712 VDEState *s = vc->opaque;
1716 ret = vde_send(s->vde, (const char *)buf, size, 0);
1717 } while (ret < 0 && errno == EINTR);
1722 static void vde_cleanup(VLANClientState *vc)
1724 VDEState *s = vc->opaque;
1725 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1730 static int net_vde_init(VLANState *vlan, const char *model,
1731 const char *name, const char *sock,
1732 int port, const char *group, int mode)
1735 char *init_group = (char *)group;
1736 char *init_sock = (char *)sock;
1738 struct vde_open_args args = {
1740 .group = init_group,
1744 s = qemu_mallocz(sizeof(VDEState));
1745 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1750 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1751 NULL, vde_cleanup, s);
1752 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1753 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1754 sock, vde_datafd(s->vde));
1759 /* network connection */
1760 typedef struct NetSocketState {
1761 VLANClientState *vc;
1763 int state; /* 0 = getting length, 1 = getting data */
1765 unsigned int packet_len;
1767 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1770 typedef struct NetSocketListenState {
1775 } NetSocketListenState;
1777 /* XXX: we consider we can send the whole packet without blocking */
1778 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1780 NetSocketState *s = vc->opaque;
1784 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1785 return send_all(s->fd, buf, size);
1788 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1790 NetSocketState *s = vc->opaque;
1792 return sendto(s->fd, (const void *)buf, size, 0,
1793 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1796 static void net_socket_send(void *opaque)
1798 NetSocketState *s = opaque;
1804 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1806 err = socket_error();
1807 if (err != EWOULDBLOCK)
1809 } else if (size == 0) {
1810 /* end of connection */
1812 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1818 /* reassemble a packet from the network */
1824 memcpy(s->buf + s->index, buf, l);
1828 if (s->index == 4) {
1830 s->packet_len = ntohl(*(uint32_t *)s->buf);
1836 l = s->packet_len - s->index;
1839 if (s->index + l <= sizeof(s->buf)) {
1840 memcpy(s->buf + s->index, buf, l);
1842 fprintf(stderr, "serious error: oversized packet received,"
1843 "connection terminated.\n");
1851 if (s->index >= s->packet_len) {
1852 qemu_send_packet(s->vc, s->buf, s->packet_len);
1861 static void net_socket_send_dgram(void *opaque)
1863 NetSocketState *s = opaque;
1866 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1870 /* end of connection */
1871 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1874 qemu_send_packet(s->vc, s->buf, size);
1877 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1882 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1883 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1884 inet_ntoa(mcastaddr->sin_addr),
1885 (int)ntohl(mcastaddr->sin_addr.s_addr));
1889 fd = socket(PF_INET, SOCK_DGRAM, 0);
1891 perror("socket(PF_INET, SOCK_DGRAM)");
1896 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1897 (const char *)&val, sizeof(val));
1899 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1903 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1909 /* Add host to multicast group */
1910 imr.imr_multiaddr = mcastaddr->sin_addr;
1911 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1913 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1914 (const char *)&imr, sizeof(struct ip_mreq));
1916 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1920 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1922 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1923 (const char *)&val, sizeof(val));
1925 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1929 socket_set_nonblock(fd);
1937 static void net_socket_cleanup(VLANClientState *vc)
1939 NetSocketState *s = vc->opaque;
1940 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1945 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1948 int fd, int is_connected)
1950 struct sockaddr_in saddr;
1952 socklen_t saddr_len;
1955 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1956 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1957 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1961 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1963 if (saddr.sin_addr.s_addr==0) {
1964 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1968 /* clone dgram socket */
1969 newfd = net_socket_mcast_create(&saddr);
1971 /* error already reported by net_socket_mcast_create() */
1975 /* clone newfd to fd, close newfd */
1980 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1981 fd, strerror(errno));
1986 s = qemu_mallocz(sizeof(NetSocketState));
1989 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1990 NULL, net_socket_cleanup, s);
1991 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1993 /* mcast: save bound address as dst */
1994 if (is_connected) s->dgram_dst=saddr;
1996 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1997 "socket: fd=%d (%s mcast=%s:%d)",
1998 fd, is_connected? "cloned" : "",
1999 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2003 static void net_socket_connect(void *opaque)
2005 NetSocketState *s = opaque;
2006 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2009 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2012 int fd, int is_connected)
2015 s = qemu_mallocz(sizeof(NetSocketState));
2017 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
2018 NULL, net_socket_cleanup, s);
2019 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2020 "socket: fd=%d", fd);
2022 net_socket_connect(s);
2024 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2029 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2030 const char *model, const char *name,
2031 int fd, int is_connected)
2033 int so_type = -1, optlen=sizeof(so_type);
2035 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2036 (socklen_t *)&optlen)< 0) {
2037 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2042 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2044 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2046 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2047 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2048 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2053 static void net_socket_accept(void *opaque)
2055 NetSocketListenState *s = opaque;
2057 struct sockaddr_in saddr;
2062 len = sizeof(saddr);
2063 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2064 if (fd < 0 && errno != EINTR) {
2066 } else if (fd >= 0) {
2070 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2074 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2075 "socket: connection from %s:%d",
2076 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2080 static int net_socket_listen_init(VLANState *vlan,
2083 const char *host_str)
2085 NetSocketListenState *s;
2087 struct sockaddr_in saddr;
2089 if (parse_host_port(&saddr, host_str) < 0)
2092 s = qemu_mallocz(sizeof(NetSocketListenState));
2094 fd = socket(PF_INET, SOCK_STREAM, 0);
2099 socket_set_nonblock(fd);
2101 /* allow fast reuse */
2103 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2105 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2110 ret = listen(fd, 0);
2116 s->model = qemu_strdup(model);
2117 s->name = name ? qemu_strdup(name) : NULL;
2119 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2123 static int net_socket_connect_init(VLANState *vlan,
2126 const char *host_str)
2129 int fd, connected, ret, err;
2130 struct sockaddr_in saddr;
2132 if (parse_host_port(&saddr, host_str) < 0)
2135 fd = socket(PF_INET, SOCK_STREAM, 0);
2140 socket_set_nonblock(fd);
2144 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2146 err = socket_error();
2147 if (err == EINTR || err == EWOULDBLOCK) {
2148 } else if (err == EINPROGRESS) {
2151 } else if (err == WSAEALREADY) {
2164 s = net_socket_fd_init(vlan, model, name, fd, connected);
2167 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2168 "socket: connect to %s:%d",
2169 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2173 static int net_socket_mcast_init(VLANState *vlan,
2176 const char *host_str)
2180 struct sockaddr_in saddr;
2182 if (parse_host_port(&saddr, host_str) < 0)
2186 fd = net_socket_mcast_create(&saddr);
2190 s = net_socket_fd_init(vlan, model, name, fd, 0);
2194 s->dgram_dst = saddr;
2196 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2197 "socket: mcast=%s:%d",
2198 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2203 typedef struct DumpState {
2204 VLANClientState *pcap_vc;
2209 #define PCAP_MAGIC 0xa1b2c3d4
2211 struct pcap_file_hdr {
2213 uint16_t version_major;
2214 uint16_t version_minor;
2221 struct pcap_sf_pkthdr {
2230 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2232 DumpState *s = vc->opaque;
2233 struct pcap_sf_pkthdr hdr;
2237 /* Early return in case of previous error. */
2242 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
2243 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2245 hdr.ts.tv_sec = ts / 1000000;
2246 hdr.ts.tv_usec = ts % 1000000;
2247 hdr.caplen = caplen;
2249 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2250 write(s->fd, buf, caplen) != caplen) {
2251 qemu_log("-net dump write error - stop dump\n");
2259 static void net_dump_cleanup(VLANClientState *vc)
2261 DumpState *s = vc->opaque;
2267 static int net_dump_init(VLANState *vlan, const char *device,
2268 const char *name, const char *filename, int len)
2270 struct pcap_file_hdr hdr;
2273 s = qemu_malloc(sizeof(DumpState));
2275 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2277 qemu_error("-net dump: can't open %s\n", filename);
2281 s->pcap_caplen = len;
2283 hdr.magic = PCAP_MAGIC;
2284 hdr.version_major = 2;
2285 hdr.version_minor = 4;
2288 hdr.snaplen = s->pcap_caplen;
2291 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2292 qemu_error("-net dump write error: %s\n", strerror(errno));
2298 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2299 net_dump_cleanup, s);
2300 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2301 "dump to %s (len=%d)", filename, len);
2305 /* find or alloc a new VLAN */
2306 VLANState *qemu_find_vlan(int id, int allocate)
2308 VLANState **pvlan, *vlan;
2309 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2316 vlan = qemu_mallocz(sizeof(VLANState));
2318 QTAILQ_INIT(&vlan->send_queue);
2320 pvlan = &first_vlan;
2321 while (*pvlan != NULL)
2322 pvlan = &(*pvlan)->next;
2327 static int nic_get_free_idx(void)
2331 for (index = 0; index < MAX_NICS; index++)
2332 if (!nd_table[index].used)
2337 int qemu_show_nic_models(const char *arg, const char *const *models)
2341 if (!arg || strcmp(arg, "?"))
2344 fprintf(stderr, "qemu: Supported NIC models: ");
2345 for (i = 0 ; models[i]; i++)
2346 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2350 void qemu_check_nic_model(NICInfo *nd, const char *model)
2352 const char *models[2];
2357 if (qemu_show_nic_models(nd->model, models))
2359 if (qemu_find_nic_model(nd, models, model) < 0)
2363 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2364 const char *default_model)
2369 nd->model = qemu_strdup(default_model);
2371 for (i = 0 ; models[i]; i++) {
2372 if (strcmp(nd->model, models[i]) == 0)
2376 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2380 static int net_handle_fd_param(Monitor *mon, const char *param)
2382 if (!qemu_isdigit(param[0])) {
2385 fd = monitor_get_fd(mon, param);
2387 qemu_error("No file descriptor named %s found", param);
2393 return strtol(param, NULL, 0);
2397 static int net_init_nic(QemuOpts *opts, Monitor *mon)
2402 idx = nic_get_free_idx();
2403 if (idx == -1 || nb_nics >= MAX_NICS) {
2404 qemu_error("Too Many NICs\n");
2408 nd = &nd_table[idx];
2410 memset(nd, 0, sizeof(*nd));
2412 nd->vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2414 if (qemu_opts_id(opts)) {
2415 nd->id = qemu_strdup(qemu_opts_id(opts));
2417 if (qemu_opt_get(opts, "name")) {
2418 nd->name = qemu_strdup(qemu_opt_get(opts, "name"));
2420 if (qemu_opt_get(opts, "model")) {
2421 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2423 if (qemu_opt_get(opts, "addr")) {
2424 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2427 nd->macaddr[0] = 0x52;
2428 nd->macaddr[1] = 0x54;
2429 nd->macaddr[2] = 0x00;
2430 nd->macaddr[3] = 0x12;
2431 nd->macaddr[4] = 0x34;
2432 nd->macaddr[5] = 0x56 + idx;
2434 if (qemu_opt_get(opts, "macaddr") &&
2435 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2436 qemu_error("invalid syntax for ethernet address\n");
2440 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2441 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2442 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2443 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2448 nd->vlan->nb_guest_devs++;
2454 #if defined(CONFIG_SLIRP)
2455 static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2457 struct slirp_config_str *config;
2459 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2463 config = qemu_mallocz(sizeof(*config));
2465 pstrcpy(config->str, sizeof(config->str), value);
2467 if (!strcmp(name, "hostfwd")) {
2468 config->flags = SLIRP_CFG_HOSTFWD;
2471 config->next = slirp_configs;
2472 slirp_configs = config;
2477 static int net_init_slirp(QemuOpts *opts, Monitor *mon)
2480 struct slirp_config_str *config;
2483 const char *vhostname;
2484 const char *vdhcp_start;
2485 const char *vnamesrv;
2486 const char *tftp_export;
2487 const char *bootfile;
2488 const char *smb_export;
2489 const char *vsmbsrv;
2494 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2496 name = qemu_opt_get(opts, "name");
2498 vhost = qemu_opt_get(opts, "host");
2499 vhostname = qemu_opt_get(opts, "hostname");
2500 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2501 vnamesrv = qemu_opt_get(opts, "dns");
2502 tftp_export = qemu_opt_get(opts, "tftp");
2503 bootfile = qemu_opt_get(opts, "bootfile");
2504 smb_export = qemu_opt_get(opts, "smb");
2505 vsmbsrv = qemu_opt_get(opts, "smbserver");
2507 if (qemu_opt_get(opts, "ip")) {
2508 const char *ip = qemu_opt_get(opts, "ip");
2509 int l = strlen(ip) + strlen("/24") + 1;
2511 vnet = qemu_malloc(l);
2513 /* emulate legacy ip= parameter */
2514 pstrcpy(vnet, l, ip);
2515 pstrcat(vnet, l, "/24");
2518 if (qemu_opt_get(opts, "net")) {
2522 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2525 if (qemu_opt_get(opts, "restrict") &&
2526 qemu_opt_get(opts, "restrict")[0] == 'y') {
2530 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2532 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2533 vhostname, tftp_export, bootfile, vdhcp_start,
2534 vnamesrv, smb_export, vsmbsrv);
2536 while (slirp_configs) {
2537 config = slirp_configs;
2538 slirp_configs = config->next;
2543 vlan->nb_host_devs++;
2550 #endif /* CONFIG_SLIRP */
2553 static int net_init_tap_win32(QemuOpts *opts, Monitor *mon)
2559 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2561 name = qemu_opt_get(opts, "name");
2562 ifname = qemu_opt_get(opts, "ifname");
2565 qemu_error("tap: no interface name\n");
2569 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2573 vlan->nb_host_devs++;
2577 #elif !defined(_AIX)
2578 static int net_init_tap(QemuOpts *opts, Monitor *mon)
2584 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2586 name = qemu_opt_get(opts, "name");
2588 if (qemu_opt_get(opts, "fd")) {
2591 if (qemu_opt_get(opts, "ifname") ||
2592 qemu_opt_get(opts, "script") ||
2593 qemu_opt_get(opts, "downscript")) {
2594 qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
2598 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2603 fcntl(fd, F_SETFL, O_NONBLOCK);
2605 s = net_tap_fd_init(vlan, "tap", name, fd);
2610 const char *ifname, *script, *downscript;
2612 ifname = qemu_opt_get(opts, "ifname");
2613 script = qemu_opt_get(opts, "script");
2614 downscript = qemu_opt_get(opts, "downscript");
2617 script = DEFAULT_NETWORK_SCRIPT;
2620 downscript = DEFAULT_NETWORK_DOWN_SCRIPT;
2623 s = net_tap_init(vlan, "tap", name, ifname, script, downscript);
2630 if (tap_set_sndbuf(s, opts) < 0) {
2634 vlan->nb_host_devs++;
2640 static int net_init_socket(QemuOpts *opts, Monitor *mon)
2645 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2647 name = qemu_opt_get(opts, "name");
2649 if (qemu_opt_get(opts, "fd")) {
2652 if (qemu_opt_get(opts, "listen") ||
2653 qemu_opt_get(opts, "connect") ||
2654 qemu_opt_get(opts, "mcast")) {
2655 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2659 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2664 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2668 } else if (qemu_opt_get(opts, "listen")) {
2671 if (qemu_opt_get(opts, "fd") ||
2672 qemu_opt_get(opts, "connect") ||
2673 qemu_opt_get(opts, "mcast")) {
2674 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2678 listen = qemu_opt_get(opts, "listen");
2680 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2683 } else if (qemu_opt_get(opts, "connect")) {
2684 const char *connect;
2686 if (qemu_opt_get(opts, "fd") ||
2687 qemu_opt_get(opts, "listen") ||
2688 qemu_opt_get(opts, "mcast")) {
2689 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2693 connect = qemu_opt_get(opts, "connect");
2695 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2698 } else if (qemu_opt_get(opts, "mcast")) {
2701 if (qemu_opt_get(opts, "fd") ||
2702 qemu_opt_get(opts, "connect") ||
2703 qemu_opt_get(opts, "listen")) {
2704 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2708 mcast = qemu_opt_get(opts, "mcast");
2710 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2714 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2718 vlan->nb_host_devs++;
2724 static int net_init_vde(QemuOpts *opts, Monitor *mon)
2732 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2734 name = qemu_opt_get(opts, "name");
2735 sock = qemu_opt_get(opts, "sock");
2736 group = qemu_opt_get(opts, "group");
2738 port = qemu_opt_get_number(opts, "port", 0);
2739 mode = qemu_opt_get_number(opts, "mode", 0700);
2741 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2745 vlan->nb_host_devs++;
2751 static int net_init_dump(QemuOpts *opts, Monitor *mon)
2759 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2761 name = qemu_opt_get(opts, "name");
2763 file = qemu_opt_get(opts, "file");
2765 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2769 len = qemu_opt_get_size(opts, "len", 65536);
2771 return net_dump_init(vlan, "dump", name, file, len);
2774 #define NET_COMMON_PARAMS_DESC \
2777 .type = QEMU_OPT_STRING, \
2778 .help = "net client type (nic, tap etc.)", \
2781 .type = QEMU_OPT_NUMBER, \
2782 .help = "vlan number", \
2785 .type = QEMU_OPT_STRING, \
2786 .help = "identifier for monitor commands", \
2789 typedef int (*net_client_init_func)(QemuOpts *opts, Monitor *mon);
2791 /* magic number, but compiler will warn if too small */
2792 #define NET_MAX_DESC 20
2796 net_client_init_func init;
2797 QemuOptDesc desc[NET_MAX_DESC];
2798 } net_client_types[] = {
2802 NET_COMMON_PARAMS_DESC,
2803 { /* end of list */ }
2807 .init = net_init_nic,
2809 NET_COMMON_PARAMS_DESC,
2812 .type = QEMU_OPT_STRING,
2813 .help = "MAC address",
2816 .type = QEMU_OPT_STRING,
2817 .help = "device model (e1000, rtl8139, virtio etc.)",
2820 .type = QEMU_OPT_STRING,
2821 .help = "PCI device address",
2824 .type = QEMU_OPT_NUMBER,
2825 .help = "number of MSI-x vectors, 0 to disable MSI-X",
2827 { /* end of list */ }
2832 .init = net_init_slirp,
2834 NET_COMMON_PARAMS_DESC,
2837 .type = QEMU_OPT_STRING,
2838 .help = "client hostname reported by the builtin DHCP server",
2841 .type = QEMU_OPT_STRING,
2842 .help = "isolate the guest from the host (y|yes|n|no)",
2845 .type = QEMU_OPT_STRING,
2846 .help = "legacy parameter, use net= instead",
2849 .type = QEMU_OPT_STRING,
2850 .help = "IP address and optional netmask",
2853 .type = QEMU_OPT_STRING,
2854 .help = "guest-visible address of the host",
2857 .type = QEMU_OPT_STRING,
2858 .help = "root directory of the built-in TFTP server",
2861 .type = QEMU_OPT_STRING,
2862 .help = "BOOTP filename, for use with tftp=",
2864 .name = "dhcpstart",
2865 .type = QEMU_OPT_STRING,
2866 .help = "the first of the 16 IPs the built-in DHCP server can assign",
2869 .type = QEMU_OPT_STRING,
2870 .help = "guest-visible address of the virtual nameserver",
2873 .type = QEMU_OPT_STRING,
2874 .help = "root directory of the built-in SMB server",
2876 .name = "smbserver",
2877 .type = QEMU_OPT_STRING,
2878 .help = "IP address of the built-in SMB server",
2881 .type = QEMU_OPT_STRING,
2882 .help = "guest port number to forward incoming TCP or UDP connections",
2885 .type = QEMU_OPT_STRING,
2886 .help = "IP address and port to forward guest TCP connections",
2888 { /* end of list */ }
2894 .init = net_init_tap_win32,
2896 NET_COMMON_PARAMS_DESC,
2899 .type = QEMU_OPT_STRING,
2900 .help = "interface name",
2902 { /* end of list */ }
2904 #elif !defined(_AIX)
2907 .init = net_init_tap,
2909 NET_COMMON_PARAMS_DESC,
2912 .type = QEMU_OPT_STRING,
2913 .help = "file descriptor of an already opened tap",
2916 .type = QEMU_OPT_STRING,
2917 .help = "interface name",
2920 .type = QEMU_OPT_STRING,
2921 .help = "script to initialize the interface",
2923 .name = "downscript",
2924 .type = QEMU_OPT_STRING,
2925 .help = "script to shut down the interface",
2929 .type = QEMU_OPT_SIZE,
2930 .help = "send buffer limit"
2933 { /* end of list */ }
2938 .init = net_init_socket,
2940 NET_COMMON_PARAMS_DESC,
2943 .type = QEMU_OPT_STRING,
2944 .help = "file descriptor of an already opened socket",
2947 .type = QEMU_OPT_STRING,
2948 .help = "port number, and optional hostname, to listen on",
2951 .type = QEMU_OPT_STRING,
2952 .help = "port number, and optional hostname, to connect to",
2955 .type = QEMU_OPT_STRING,
2956 .help = "UDP multicast address and port number",
2958 { /* end of list */ }
2963 .init = net_init_vde,
2965 NET_COMMON_PARAMS_DESC,
2968 .type = QEMU_OPT_STRING,
2969 .help = "socket path",
2972 .type = QEMU_OPT_NUMBER,
2973 .help = "port number",
2976 .type = QEMU_OPT_STRING,
2977 .help = "group owner of socket",
2980 .type = QEMU_OPT_NUMBER,
2981 .help = "permissions for socket",
2983 { /* end of list */ }
2988 .init = net_init_dump,
2990 NET_COMMON_PARAMS_DESC,
2993 .type = QEMU_OPT_SIZE,
2994 .help = "per-packet size limit (64k default)",
2997 .type = QEMU_OPT_STRING,
2998 .help = "dump file path (default is qemu-vlan0.pcap)",
3000 { /* end of list */ }
3003 { /* end of list */ }
3006 int net_client_init(Monitor *mon, QemuOpts *opts)
3011 type = qemu_opt_get(opts, "type");
3013 qemu_error("No type specified for -net\n");
3017 for (i = 0; net_client_types[i].type != NULL; i++) {
3018 if (!strcmp(net_client_types[i].type, type)) {
3019 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3023 if (net_client_types[i].init) {
3024 return net_client_types[i].init(opts, NULL);
3031 qemu_error("Invalid -net type '%s'\n", type);
3035 void net_client_uninit(NICInfo *nd)
3037 nd->vlan->nb_guest_devs--;
3040 qemu_free(nd->model);
3041 qemu_free(nd->name);
3042 qemu_free(nd->devaddr);
3048 static int net_host_check_device(const char *device)
3051 const char *valid_param_list[] = { "tap", "socket", "dump"
3059 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3060 if (!strncmp(valid_param_list[i], device,
3061 strlen(valid_param_list[i])))
3068 void net_host_device_add(Monitor *mon, const QDict *qdict)
3070 const char *device = qdict_get_str(qdict, "device");
3071 const char *opts_str = qdict_get_try_str(qdict, "opts");
3074 if (!net_host_check_device(device)) {
3075 monitor_printf(mon, "invalid host network device %s\n", device);
3079 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3081 monitor_printf(mon, "parsing network options '%s' failed\n",
3082 opts_str ? opts_str : "");
3086 qemu_opt_set(opts, "type", device);
3088 if (net_client_init(mon, opts) < 0) {
3089 monitor_printf(mon, "adding host network device %s failed\n", device);
3093 void net_host_device_remove(Monitor *mon, const QDict *qdict)
3095 VLANClientState *vc;
3096 int vlan_id = qdict_get_int(qdict, "vlan_id");
3097 const char *device = qdict_get_str(qdict, "device");
3099 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
3103 if (!net_host_check_device(vc->model)) {
3104 monitor_printf(mon, "invalid host network device %s\n", device);
3107 qemu_del_vlan_client(vc);
3110 void net_set_boot_mask(int net_boot_mask)
3114 /* Only the first four NICs may be bootable */
3115 net_boot_mask = net_boot_mask & 0xF;
3117 for (i = 0; i < nb_nics; i++) {
3118 if (net_boot_mask & (1 << i)) {
3119 nd_table[i].bootable = 1;
3120 net_boot_mask &= ~(1 << i);
3124 if (net_boot_mask) {
3125 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3130 void do_info_network(Monitor *mon)
3133 VLANClientState *vc;
3135 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
3136 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
3137 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
3138 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
3142 void do_set_link(Monitor *mon, const QDict *qdict)
3145 VLANClientState *vc = NULL;
3146 const char *name = qdict_get_str(qdict, "name");
3147 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
3149 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
3150 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
3151 if (strcmp(vc->name, name) == 0)
3156 monitor_printf(mon, "could not find network device '%s'\n", name);
3160 if (strcmp(up_or_down, "up") == 0)
3162 else if (strcmp(up_or_down, "down") == 0)
3165 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3166 "valid\n", up_or_down);
3168 if (vc->link_status_changed)
3169 vc->link_status_changed(vc);
3172 void net_cleanup(void)
3176 /* close network clients */
3177 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
3178 VLANClientState *vc = vlan->first_client;
3181 VLANClientState *next = vc->next;
3183 qemu_del_vlan_client(vc);
3190 static void net_check_clients(void)
3194 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
3195 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3197 if (vlan->nb_guest_devs == 0)
3198 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3199 if (vlan->nb_host_devs == 0)
3201 "Warning: vlan %d is not connected to host network\n",
3206 static int net_init_client(QemuOpts *opts, void *dummy)
3208 return net_client_init(NULL, opts);
3211 int net_init_clients(void)
3213 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3214 /* if no clients, we use a default config */
3215 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3217 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3221 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3225 net_check_clients();
3230 int net_client_parse(const char *optarg)
3232 #if defined(CONFIG_SLIRP)
3233 /* handle legacy -net channel,port:chr */
3234 if (!strncmp(optarg, "channel,", strlen("channel,"))) {
3237 optarg += strlen("channel,");
3239 if (QTAILQ_EMPTY(&slirp_stacks)) {
3240 struct slirp_config_str *config;
3242 config = qemu_malloc(sizeof(*config));
3243 pstrcpy(config->str, sizeof(config->str), optarg);
3244 config->flags = SLIRP_CFG_LEGACY;
3245 config->next = slirp_configs;
3246 slirp_configs = config;
3249 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3255 if (!qemu_opts_parse(&qemu_net_opts, optarg, "type")) {