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 "tap-linux.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 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
285 static int index = 0;
286 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
288 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
290 macaddr->a[0] = 0x52;
291 macaddr->a[1] = 0x54;
292 macaddr->a[2] = 0x00;
293 macaddr->a[3] = 0x12;
294 macaddr->a[4] = 0x34;
295 macaddr->a[5] = 0x56 + index++;
298 static char *assign_name(VLANClientState *vc1, const char *model)
304 QTAILQ_FOREACH(vlan, &vlans, next) {
307 QTAILQ_FOREACH(vc, &vlan->clients, next) {
308 if (vc != vc1 && strcmp(vc->model, model) == 0) {
314 snprintf(buf, sizeof(buf), "%s.%d", model, id);
316 return qemu_strdup(buf);
319 static ssize_t qemu_deliver_packet(VLANClientState *sender,
324 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
326 const struct iovec *iov,
330 VLANClientState *qemu_new_vlan_client(net_client_type type,
332 VLANClientState *peer,
335 NetCanReceive *can_receive,
337 NetReceive *receive_raw,
338 NetReceiveIOV *receive_iov,
344 vc = qemu_mallocz(sizeof(VLANClientState));
347 vc->model = qemu_strdup(model);
349 vc->name = qemu_strdup(name);
351 vc->name = assign_name(vc, model);
352 vc->can_receive = can_receive;
353 vc->receive = receive;
354 vc->receive_raw = receive_raw;
355 vc->receive_iov = receive_iov;
356 vc->cleanup = cleanup;
362 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
368 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
370 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
371 qemu_deliver_packet_iov,
378 void qemu_del_vlan_client(VLANClientState *vc)
381 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
383 if (vc->send_queue) {
384 qemu_del_net_queue(vc->send_queue);
386 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
388 vc->peer->peer = NULL;
397 qemu_free(vc->model);
401 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
405 QTAILQ_FOREACH(vc, &vlan->clients, next) {
406 if (vc->opaque == opaque) {
414 static VLANClientState *
415 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
416 const char *client_str)
421 vlan = qemu_find_vlan(vlan_id, 0);
423 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
427 QTAILQ_FOREACH(vc, &vlan->clients, next) {
428 if (!strcmp(vc->name, client_str)) {
433 monitor_printf(mon, "can't find device %s on VLAN %d\n",
434 client_str, vlan_id);
440 int qemu_can_send_packet(VLANClientState *sender)
442 VLANState *vlan = sender->vlan;
446 if (!sender->peer->can_receive ||
447 sender->peer->can_receive(sender->peer)) {
458 QTAILQ_FOREACH(vc, &vlan->clients, next) {
463 /* no can_receive() handler, they can always receive */
464 if (!vc->can_receive || vc->can_receive(vc)) {
471 static ssize_t qemu_deliver_packet(VLANClientState *sender,
477 VLANClientState *vc = opaque;
483 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
484 return vc->receive_raw(vc, data, size);
486 return vc->receive(vc, data, size);
489 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
495 VLANState *vlan = opaque;
499 QTAILQ_FOREACH(vc, &vlan->clients, next) {
511 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw)
512 len = vc->receive_raw(vc, buf, size);
514 len = vc->receive(vc, buf, size);
516 ret = (ret >= 0) ? ret : len;
522 void qemu_purge_queued_packets(VLANClientState *vc)
526 if (!vc->peer && !vc->vlan) {
531 queue = vc->peer->send_queue;
533 queue = vc->vlan->send_queue;
536 qemu_net_queue_purge(queue, vc);
539 void qemu_flush_queued_packets(VLANClientState *vc)
544 queue = vc->vlan->send_queue;
546 queue = vc->send_queue;
549 qemu_net_queue_flush(queue);
552 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
554 const uint8_t *buf, int size,
555 NetPacketSent *sent_cb)
560 printf("qemu_send_packet_async:\n");
561 hex_dump(stdout, buf, size);
564 if (sender->link_down || (!sender->peer && !sender->vlan)) {
569 queue = sender->peer->send_queue;
571 queue = sender->vlan->send_queue;
574 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
577 ssize_t qemu_send_packet_async(VLANClientState *sender,
578 const uint8_t *buf, int size,
579 NetPacketSent *sent_cb)
581 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
585 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
587 qemu_send_packet_async(vc, buf, size, NULL);
590 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
592 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
596 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
599 uint8_t buffer[4096];
603 for (i = 0; i < iovcnt; i++) {
606 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
607 memcpy(buffer + offset, iov[i].iov_base, len);
611 return vc->receive(vc, buffer, offset);
614 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
619 for (i = 0; i < iovcnt; i++)
620 offset += iov[i].iov_len;
624 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
626 const struct iovec *iov,
630 VLANClientState *vc = opaque;
633 return calc_iov_length(iov, iovcnt);
636 if (vc->receive_iov) {
637 return vc->receive_iov(vc, iov, iovcnt);
639 return vc_sendv_compat(vc, iov, iovcnt);
643 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
645 const struct iovec *iov,
649 VLANState *vlan = opaque;
653 QTAILQ_FOREACH(vc, &vlan->clients, next) {
661 ret = calc_iov_length(iov, iovcnt);
665 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
667 if (vc->receive_iov) {
668 len = vc->receive_iov(vc, iov, iovcnt);
670 len = vc_sendv_compat(vc, iov, iovcnt);
673 ret = (ret >= 0) ? ret : len;
679 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
680 const struct iovec *iov, int iovcnt,
681 NetPacketSent *sent_cb)
685 if (sender->link_down || (!sender->peer && !sender->vlan)) {
686 return calc_iov_length(iov, iovcnt);
690 queue = sender->peer->send_queue;
692 queue = sender->vlan->send_queue;
695 return qemu_net_queue_send_iov(queue, sender,
696 QEMU_NET_PACKET_FLAG_NONE,
697 iov, iovcnt, sent_cb);
701 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
703 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
706 #if defined(CONFIG_SLIRP)
708 /* slirp network adapter */
710 #define SLIRP_CFG_HOSTFWD 1
711 #define SLIRP_CFG_LEGACY 2
713 struct slirp_config_str {
714 struct slirp_config_str *next;
720 typedef struct SlirpState {
721 QTAILQ_ENTRY(SlirpState) entry;
729 static struct slirp_config_str *slirp_configs;
730 const char *legacy_tftp_prefix;
731 const char *legacy_bootp_filename;
732 static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
733 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
735 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
737 static int slirp_guestfwd(SlirpState *s, const char *config_str,
741 static const char *legacy_smb_export;
743 static int slirp_smb(SlirpState *s, const char *exported_dir,
744 struct in_addr vserver_addr);
745 static void slirp_smb_cleanup(SlirpState *s);
747 static inline void slirp_smb_cleanup(SlirpState *s) { }
750 int slirp_can_output(void *opaque)
752 SlirpState *s = opaque;
754 return qemu_can_send_packet(s->vc);
757 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
759 SlirpState *s = opaque;
762 printf("slirp output:\n");
763 hex_dump(stdout, pkt, pkt_len);
765 qemu_send_packet(s->vc, pkt, pkt_len);
768 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
770 SlirpState *s = vc->opaque;
773 printf("slirp input:\n");
774 hex_dump(stdout, buf, size);
776 slirp_input(s->slirp, buf, size);
780 static void net_slirp_cleanup(VLANClientState *vc)
782 SlirpState *s = vc->opaque;
784 slirp_cleanup(s->slirp);
785 slirp_smb_cleanup(s);
786 QTAILQ_REMOVE(&slirp_stacks, s, entry);
790 static int net_slirp_init(VLANState *vlan, const char *model,
791 const char *name, int restricted,
792 const char *vnetwork, const char *vhost,
793 const char *vhostname, const char *tftp_export,
794 const char *bootfile, const char *vdhcp_start,
795 const char *vnameserver, const char *smb_export,
796 const char *vsmbserver)
798 /* default settings according to historic slirp */
799 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
800 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
801 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
802 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
803 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
805 struct in_addr smbsrv = { .s_addr = 0 };
812 struct slirp_config_str *config;
815 tftp_export = legacy_tftp_prefix;
818 bootfile = legacy_bootp_filename;
822 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
823 if (!inet_aton(vnetwork, &net)) {
826 addr = ntohl(net.s_addr);
827 if (!(addr & 0x80000000)) {
828 mask.s_addr = htonl(0xff000000); /* class A */
829 } else if ((addr & 0xfff00000) == 0xac100000) {
830 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
831 } else if ((addr & 0xc0000000) == 0x80000000) {
832 mask.s_addr = htonl(0xffff0000); /* class B */
833 } else if ((addr & 0xffff0000) == 0xc0a80000) {
834 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
835 } else if ((addr & 0xffff0000) == 0xc6120000) {
836 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
837 } else if ((addr & 0xe0000000) == 0xe0000000) {
838 mask.s_addr = htonl(0xffffff00); /* class C */
840 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
843 if (!inet_aton(buf, &net)) {
846 shift = strtol(vnetwork, &end, 10);
848 if (!inet_aton(vnetwork, &mask)) {
851 } else if (shift < 4 || shift > 32) {
854 mask.s_addr = htonl(0xffffffff << (32 - shift));
857 net.s_addr &= mask.s_addr;
858 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
859 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
860 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
863 if (vhost && !inet_aton(vhost, &host)) {
866 if ((host.s_addr & mask.s_addr) != net.s_addr) {
870 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
873 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
874 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
878 if (vnameserver && !inet_aton(vnameserver, &dns)) {
881 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
882 dns.s_addr == host.s_addr) {
887 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
892 s = qemu_mallocz(sizeof(SlirpState));
893 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
894 tftp_export, bootfile, dhcp, dns, s);
895 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
897 for (config = slirp_configs; config; config = config->next) {
898 if (config->flags & SLIRP_CFG_HOSTFWD) {
899 if (slirp_hostfwd(s, config->str,
900 config->flags & SLIRP_CFG_LEGACY) < 0)
903 if (slirp_guestfwd(s, config->str,
904 config->flags & SLIRP_CFG_LEGACY) < 0)
910 smb_export = legacy_smb_export;
913 if (slirp_smb(s, smb_export, smbsrv) < 0)
918 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
919 vlan, NULL, model, name, NULL,
920 slirp_receive, NULL, NULL,
921 net_slirp_cleanup, s);
922 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
923 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
927 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
933 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
937 if (strcmp(vc->model, "user")) {
938 monitor_printf(mon, "invalid device specified\n");
943 if (QTAILQ_EMPTY(&slirp_stacks)) {
944 monitor_printf(mon, "user mode network stack not in use\n");
947 return QTAILQ_FIRST(&slirp_stacks);
951 void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
953 struct in_addr host_addr = { .s_addr = INADDR_ANY };
956 const char *src_str, *p;
960 const char *arg1 = qdict_get_str(qdict, "arg1");
961 const char *arg2 = qdict_get_try_str(qdict, "arg2");
962 const char *arg3 = qdict_get_try_str(qdict, "arg3");
965 s = slirp_lookup(mon, arg1, arg2);
968 s = slirp_lookup(mon, NULL, NULL);
975 if (!src_str || !src_str[0])
979 get_str_sep(buf, sizeof(buf), &p, ':');
981 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
983 } else if (!strcmp(buf, "udp")) {
989 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
992 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
998 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
999 host_addr, host_port);
1001 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
1002 err ? "removed" : "not found");
1006 monitor_printf(mon, "invalid format\n");
1009 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
1012 struct in_addr host_addr = { .s_addr = INADDR_ANY };
1013 struct in_addr guest_addr = { .s_addr = 0 };
1014 int host_port, guest_port;
1021 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1024 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
1026 } else if (!strcmp(buf, "udp")) {
1032 if (!legacy_format) {
1033 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1036 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1041 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
1044 host_port = strtol(buf, &end, 0);
1045 if (*end != '\0' || host_port < 1 || host_port > 65535) {
1049 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1052 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1056 guest_port = strtol(p, &end, 0);
1057 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1061 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1063 qemu_error("could not set up host forwarding rule '%s'\n",
1070 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
1074 void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
1076 const char *redir_str;
1078 const char *arg1 = qdict_get_str(qdict, "arg1");
1079 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1080 const char *arg3 = qdict_get_try_str(qdict, "arg3");
1083 s = slirp_lookup(mon, arg1, arg2);
1086 s = slirp_lookup(mon, NULL, NULL);
1090 slirp_hostfwd(s, redir_str, 0);
1095 int net_slirp_redir(const char *redir_str)
1097 struct slirp_config_str *config;
1099 if (QTAILQ_EMPTY(&slirp_stacks)) {
1100 config = qemu_malloc(sizeof(*config));
1101 pstrcpy(config->str, sizeof(config->str), redir_str);
1102 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1103 config->next = slirp_configs;
1104 slirp_configs = config;
1108 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
1113 /* automatic user mode samba server configuration */
1114 static void slirp_smb_cleanup(SlirpState *s)
1118 if (s->smb_dir[0] != '\0') {
1119 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1121 s->smb_dir[0] = '\0';
1125 static int slirp_smb(SlirpState* s, const char *exported_dir,
1126 struct in_addr vserver_addr)
1128 static int instance;
1130 char smb_cmdline[128];
1133 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1134 (long)getpid(), instance++);
1135 if (mkdir(s->smb_dir, 0700) < 0) {
1136 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
1139 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1141 f = fopen(smb_conf, "w");
1143 slirp_smb_cleanup(s);
1144 qemu_error("could not create samba server configuration file '%s'\n",
1152 "socket address=127.0.0.1\n"
1153 "pid directory=%s\n"
1154 "lock directory=%s\n"
1155 "log file=%s/log.smbd\n"
1156 "smb passwd file=%s/smbpasswd\n"
1157 "security = share\n"
1171 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1172 SMBD_COMMAND, smb_conf);
1174 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1175 slirp_smb_cleanup(s);
1176 qemu_error("conflicting/invalid smbserver address\n");
1182 /* automatic user mode samba server configuration (legacy interface) */
1183 int net_slirp_smb(const char *exported_dir)
1185 struct in_addr vserver_addr = { .s_addr = 0 };
1187 if (legacy_smb_export) {
1188 fprintf(stderr, "-smb given twice\n");
1191 legacy_smb_export = exported_dir;
1192 if (!QTAILQ_EMPTY(&slirp_stacks)) {
1193 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
1199 #endif /* !defined(_WIN32) */
1202 CharDriverState *hd;
1203 struct in_addr server;
1208 static int guestfwd_can_read(void *opaque)
1210 struct GuestFwd *fwd = opaque;
1211 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1214 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1216 struct GuestFwd *fwd = opaque;
1217 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1220 static int slirp_guestfwd(SlirpState *s, const char *config_str,
1223 struct in_addr server = { .s_addr = 0 };
1224 struct GuestFwd *fwd;
1231 if (legacy_format) {
1232 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1236 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1239 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1242 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1245 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1248 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1252 port = strtol(buf, &end, 10);
1253 if (*end != '\0' || port < 1 || port > 65535) {
1257 fwd = qemu_malloc(sizeof(struct GuestFwd));
1258 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1259 fwd->hd = qemu_chr_open(buf, p, NULL);
1261 qemu_error("could not open guest forwarding device '%s'\n", buf);
1266 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1267 qemu_error("conflicting/invalid host:port in guest forwarding "
1268 "rule '%s'\n", config_str);
1272 fwd->server = server;
1274 fwd->slirp = s->slirp;
1276 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1281 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
1285 void do_info_usernet(Monitor *mon)
1289 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
1290 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1291 slirp_connection_info(s->slirp, mon);
1295 #endif /* CONFIG_SLIRP */
1298 int tap_has_vnet_hdr(VLANClientState *vc)
1302 void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1305 #else /* !defined(_WIN32) */
1307 /* Maximum GSO packet size (64k) plus plenty of room for
1308 * the ethernet and virtio_net headers
1310 #define TAP_BUFSIZE (4096 + 65536)
1312 typedef struct TAPState {
1313 VLANClientState *vc;
1315 char down_script[1024];
1316 char down_script_arg[128];
1317 uint8_t buf[TAP_BUFSIZE];
1318 unsigned int read_poll : 1;
1319 unsigned int write_poll : 1;
1320 unsigned int has_vnet_hdr : 1;
1321 unsigned int using_vnet_hdr : 1;
1324 static int launch_script(const char *setup_script, const char *ifname, int fd);
1326 static int tap_can_send(void *opaque);
1327 static void tap_send(void *opaque);
1328 static void tap_writable(void *opaque);
1330 static void tap_update_fd_handler(TAPState *s)
1332 qemu_set_fd_handler2(s->fd,
1333 s->read_poll ? tap_can_send : NULL,
1334 s->read_poll ? tap_send : NULL,
1335 s->write_poll ? tap_writable : NULL,
1339 static void tap_read_poll(TAPState *s, int enable)
1341 s->read_poll = !!enable;
1342 tap_update_fd_handler(s);
1345 static void tap_write_poll(TAPState *s, int enable)
1347 s->write_poll = !!enable;
1348 tap_update_fd_handler(s);
1351 static void tap_writable(void *opaque)
1353 TAPState *s = opaque;
1355 tap_write_poll(s, 0);
1357 qemu_flush_queued_packets(s->vc);
1360 static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
1365 len = writev(s->fd, iov, iovcnt);
1366 } while (len == -1 && errno == EINTR);
1368 if (len == -1 && errno == EAGAIN) {
1369 tap_write_poll(s, 1);
1376 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1379 TAPState *s = vc->opaque;
1380 const struct iovec *iovp = iov;
1381 struct iovec iov_copy[iovcnt + 1];
1382 struct virtio_net_hdr hdr = { 0, };
1384 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
1385 iov_copy[0].iov_base = &hdr;
1386 iov_copy[0].iov_len = sizeof(hdr);
1387 memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
1392 return tap_write_packet(s, iovp, iovcnt);
1395 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1397 TAPState *s = vc->opaque;
1398 struct iovec iov[2];
1400 struct virtio_net_hdr hdr = { 0, };
1402 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
1403 iov[iovcnt].iov_base = &hdr;
1404 iov[iovcnt].iov_len = sizeof(hdr);
1408 iov[iovcnt].iov_base = (char *)buf;
1409 iov[iovcnt].iov_len = size;
1412 return tap_write_packet(s, iov, iovcnt);
1415 static int tap_can_send(void *opaque)
1417 TAPState *s = opaque;
1419 return qemu_can_send_packet(s->vc);
1423 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1428 sbuf.maxlen = maxlen;
1429 sbuf.buf = (char *)buf;
1431 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1434 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1436 return read(tapfd, buf, maxlen);
1440 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1442 TAPState *s = vc->opaque;
1443 tap_read_poll(s, 1);
1446 static void tap_send(void *opaque)
1448 TAPState *s = opaque;
1452 uint8_t *buf = s->buf;
1454 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1459 if (s->has_vnet_hdr && !s->using_vnet_hdr) {
1460 buf += sizeof(struct virtio_net_hdr);
1461 size -= sizeof(struct virtio_net_hdr);
1464 size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
1466 tap_read_poll(s, 0);
1471 /* sndbuf should be set to a value lower than the tx queue
1472 * capacity of any destination network interface.
1473 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1474 * a good default, given a 1500 byte MTU.
1476 #define TAP_DEFAULT_SNDBUF 1024*1024
1478 static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
1482 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
1487 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
1488 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
1494 int tap_has_vnet_hdr(VLANClientState *vc)
1496 TAPState *s = vc->opaque;
1498 assert(vc->type == NET_CLIENT_TYPE_TAP);
1500 return s->has_vnet_hdr;
1503 void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
1505 TAPState *s = vc->opaque;
1507 using_vnet_hdr = using_vnet_hdr != 0;
1509 assert(vc->type == NET_CLIENT_TYPE_TAP);
1510 assert(s->has_vnet_hdr == using_vnet_hdr);
1512 s->using_vnet_hdr = using_vnet_hdr;
1515 static int tap_probe_vnet_hdr(int fd)
1519 if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
1520 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
1524 return ifr.ifr_flags & IFF_VNET_HDR;
1527 static void tap_cleanup(VLANClientState *vc)
1529 TAPState *s = vc->opaque;
1531 qemu_purge_queued_packets(vc);
1533 if (s->down_script[0])
1534 launch_script(s->down_script, s->down_script_arg, s->fd);
1536 tap_read_poll(s, 0);
1537 tap_write_poll(s, 0);
1544 static TAPState *net_tap_fd_init(VLANState *vlan,
1552 s = qemu_mallocz(sizeof(TAPState));
1554 s->has_vnet_hdr = vnet_hdr != 0;
1555 s->using_vnet_hdr = 0;
1556 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP,
1557 vlan, NULL, model, name, NULL,
1558 tap_receive, NULL, tap_receive_iov,
1560 tap_read_poll(s, 1);
1564 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1565 static int tap_open(char *ifname, int ifname_size,
1566 int *vnet_hdr, int vnet_hdr_required)
1572 TFR(fd = open("/dev/tap", O_RDWR));
1574 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1579 dev = devname(s.st_rdev, S_IFCHR);
1580 pstrcpy(ifname, ifname_size, dev);
1582 fcntl(fd, F_SETFL, O_NONBLOCK);
1585 #elif defined(__sun__)
1586 #define TUNNEWPPA (('T'<<16) | 0x0001)
1588 * Allocate TAP device, returns opened fd.
1589 * Stores dev name in the first arg(must be large enough).
1591 static int tap_alloc(char *dev, size_t dev_size)
1593 int tap_fd, if_fd, ppa = -1;
1594 static int ip_fd = 0;
1597 static int arp_fd = 0;
1598 int ip_muxid, arp_muxid;
1599 struct strioctl strioc_if, strioc_ppa;
1600 int link_type = I_PLINK;;
1602 char actual_name[32] = "";
1604 memset(&ifr, 0x0, sizeof(ifr));
1608 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1612 /* Check if IP device was opened */
1616 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1618 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1622 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1624 syslog(LOG_ERR, "Can't open /dev/tap");
1628 /* Assign a new PPA and get its unit number. */
1629 strioc_ppa.ic_cmd = TUNNEWPPA;
1630 strioc_ppa.ic_timout = 0;
1631 strioc_ppa.ic_len = sizeof(ppa);
1632 strioc_ppa.ic_dp = (char *)&ppa;
1633 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1634 syslog (LOG_ERR, "Can't assign new interface");
1636 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1638 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1641 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1642 syslog(LOG_ERR, "Can't push IP module");
1646 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1647 syslog(LOG_ERR, "Can't get flags\n");
1649 snprintf (actual_name, 32, "tap%d", ppa);
1650 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1653 /* Assign ppa according to the unit number returned by tun device */
1655 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1656 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1657 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1658 syslog (LOG_ERR, "Can't get flags\n");
1659 /* Push arp module to if_fd */
1660 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1661 syslog (LOG_ERR, "Can't push ARP module (2)");
1663 /* Push arp module to ip_fd */
1664 if (ioctl (ip_fd, I_POP, NULL) < 0)
1665 syslog (LOG_ERR, "I_POP failed\n");
1666 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1667 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1669 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1671 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1673 /* Set ifname to arp */
1674 strioc_if.ic_cmd = SIOCSLIFNAME;
1675 strioc_if.ic_timout = 0;
1676 strioc_if.ic_len = sizeof(ifr);
1677 strioc_if.ic_dp = (char *)𝔦
1678 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1679 syslog (LOG_ERR, "Can't set ifname to arp\n");
1682 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1683 syslog(LOG_ERR, "Can't link TAP device to IP");
1687 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1688 syslog (LOG_ERR, "Can't link TAP device to ARP");
1692 memset(&ifr, 0x0, sizeof(ifr));
1693 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1694 ifr.lifr_ip_muxid = ip_muxid;
1695 ifr.lifr_arp_muxid = arp_muxid;
1697 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1699 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1700 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1701 syslog (LOG_ERR, "Can't set multiplexor id");
1704 snprintf(dev, dev_size, "tap%d", ppa);
1708 static int tap_open(char *ifname, int ifname_size,
1709 int *vnet_hdr, int vnet_hdr_required)
1713 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1714 fprintf(stderr, "Cannot allocate TAP device\n");
1717 pstrcpy(ifname, ifname_size, dev);
1718 fcntl(fd, F_SETFL, O_NONBLOCK);
1721 #elif defined (_AIX)
1722 static int tap_open(char *ifname, int ifname_size,
1723 int *vnet_hdr, int vnet_hdr_required)
1725 fprintf (stderr, "no tap on AIX\n");
1729 static int tap_open(char *ifname, int ifname_size,
1730 int *vnet_hdr, int vnet_hdr_required)
1735 TFR(fd = open("/dev/net/tun", O_RDWR));
1737 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1740 memset(&ifr, 0, sizeof(ifr));
1741 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1744 unsigned int features;
1746 if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
1747 features & IFF_VNET_HDR) {
1749 ifr.ifr_flags |= IFF_VNET_HDR;
1752 if (vnet_hdr_required && !*vnet_hdr) {
1753 qemu_error("vnet_hdr=1 requested, but no kernel "
1754 "support for IFF_VNET_HDR available");
1760 if (ifname[0] != '\0')
1761 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1763 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1764 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1766 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1770 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1771 fcntl(fd, F_SETFL, O_NONBLOCK);
1776 static int launch_script(const char *setup_script, const char *ifname, int fd)
1778 sigset_t oldmask, mask;
1784 sigaddset(&mask, SIGCHLD);
1785 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1787 /* try to launch network script */
1790 int open_max = sysconf(_SC_OPEN_MAX), i;
1792 for (i = 0; i < open_max; i++) {
1793 if (i != STDIN_FILENO &&
1794 i != STDOUT_FILENO &&
1795 i != STDERR_FILENO &&
1801 *parg++ = (char *)setup_script;
1802 *parg++ = (char *)ifname;
1804 execv(setup_script, args);
1806 } else if (pid > 0) {
1807 while (waitpid(pid, &status, 0) != pid) {
1810 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1812 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1816 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1820 static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
1822 int fd, vnet_hdr_required;
1823 char ifname[128] = {0,};
1824 const char *setup_script;
1826 if (qemu_opt_get(opts, "ifname")) {
1827 pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
1830 *vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1);
1831 if (qemu_opt_get(opts, "vnet_hdr")) {
1832 vnet_hdr_required = *vnet_hdr;
1834 vnet_hdr_required = 0;
1837 TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required));
1842 setup_script = qemu_opt_get(opts, "script");
1844 setup_script[0] != '\0' &&
1845 strcmp(setup_script, "no") != 0 &&
1846 launch_script(setup_script, ifname, fd)) {
1851 qemu_opt_set(opts, "ifname", ifname);
1856 #endif /* !_WIN32 */
1858 #if defined(CONFIG_VDE)
1859 typedef struct VDEState {
1860 VLANClientState *vc;
1864 static void vde_to_qemu(void *opaque)
1866 VDEState *s = opaque;
1870 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1872 qemu_send_packet(s->vc, buf, size);
1876 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1878 VDEState *s = vc->opaque;
1882 ret = vde_send(s->vde, (const char *)buf, size, 0);
1883 } while (ret < 0 && errno == EINTR);
1888 static void vde_cleanup(VLANClientState *vc)
1890 VDEState *s = vc->opaque;
1891 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1896 static int net_vde_init(VLANState *vlan, const char *model,
1897 const char *name, const char *sock,
1898 int port, const char *group, int mode)
1901 char *init_group = (char *)group;
1902 char *init_sock = (char *)sock;
1904 struct vde_open_args args = {
1906 .group = init_group,
1910 s = qemu_mallocz(sizeof(VDEState));
1911 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1916 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
1917 vlan, NULL, model, name, NULL,
1918 vde_receive, NULL, NULL,
1920 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1921 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1922 sock, vde_datafd(s->vde));
1927 /* network connection */
1928 typedef struct NetSocketState {
1929 VLANClientState *vc;
1931 int state; /* 0 = getting length, 1 = getting data */
1933 unsigned int packet_len;
1935 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1938 typedef struct NetSocketListenState {
1943 } NetSocketListenState;
1945 /* XXX: we consider we can send the whole packet without blocking */
1946 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1948 NetSocketState *s = vc->opaque;
1952 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1953 return send_all(s->fd, buf, size);
1956 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1958 NetSocketState *s = vc->opaque;
1960 return sendto(s->fd, (const void *)buf, size, 0,
1961 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1964 static void net_socket_send(void *opaque)
1966 NetSocketState *s = opaque;
1972 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1974 err = socket_error();
1975 if (err != EWOULDBLOCK)
1977 } else if (size == 0) {
1978 /* end of connection */
1980 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1986 /* reassemble a packet from the network */
1992 memcpy(s->buf + s->index, buf, l);
1996 if (s->index == 4) {
1998 s->packet_len = ntohl(*(uint32_t *)s->buf);
2004 l = s->packet_len - s->index;
2007 if (s->index + l <= sizeof(s->buf)) {
2008 memcpy(s->buf + s->index, buf, l);
2010 fprintf(stderr, "serious error: oversized packet received,"
2011 "connection terminated.\n");
2019 if (s->index >= s->packet_len) {
2020 qemu_send_packet(s->vc, s->buf, s->packet_len);
2029 static void net_socket_send_dgram(void *opaque)
2031 NetSocketState *s = opaque;
2034 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
2038 /* end of connection */
2039 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2042 qemu_send_packet(s->vc, s->buf, size);
2045 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
2050 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
2051 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
2052 inet_ntoa(mcastaddr->sin_addr),
2053 (int)ntohl(mcastaddr->sin_addr.s_addr));
2057 fd = socket(PF_INET, SOCK_DGRAM, 0);
2059 perror("socket(PF_INET, SOCK_DGRAM)");
2064 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
2065 (const char *)&val, sizeof(val));
2067 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
2071 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
2077 /* Add host to multicast group */
2078 imr.imr_multiaddr = mcastaddr->sin_addr;
2079 imr.imr_interface.s_addr = htonl(INADDR_ANY);
2081 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
2082 (const char *)&imr, sizeof(struct ip_mreq));
2084 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2088 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2090 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
2091 (const char *)&val, sizeof(val));
2093 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2097 socket_set_nonblock(fd);
2105 static void net_socket_cleanup(VLANClientState *vc)
2107 NetSocketState *s = vc->opaque;
2108 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2113 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
2116 int fd, int is_connected)
2118 struct sockaddr_in saddr;
2120 socklen_t saddr_len;
2123 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2124 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2125 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2129 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2131 if (saddr.sin_addr.s_addr==0) {
2132 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2136 /* clone dgram socket */
2137 newfd = net_socket_mcast_create(&saddr);
2139 /* error already reported by net_socket_mcast_create() */
2143 /* clone newfd to fd, close newfd */
2148 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2149 fd, strerror(errno));
2154 s = qemu_mallocz(sizeof(NetSocketState));
2157 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2158 vlan, NULL, model, name, NULL,
2159 net_socket_receive_dgram, NULL, NULL,
2160 net_socket_cleanup, s);
2161 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2163 /* mcast: save bound address as dst */
2164 if (is_connected) s->dgram_dst=saddr;
2166 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2167 "socket: fd=%d (%s mcast=%s:%d)",
2168 fd, is_connected? "cloned" : "",
2169 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2173 static void net_socket_connect(void *opaque)
2175 NetSocketState *s = opaque;
2176 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2179 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2182 int fd, int is_connected)
2185 s = qemu_mallocz(sizeof(NetSocketState));
2187 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
2188 vlan, NULL, model, name, NULL,
2189 net_socket_receive, NULL, NULL,
2190 net_socket_cleanup, s);
2191 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2192 "socket: fd=%d", fd);
2194 net_socket_connect(s);
2196 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2201 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2202 const char *model, const char *name,
2203 int fd, int is_connected)
2205 int so_type = -1, optlen=sizeof(so_type);
2207 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2208 (socklen_t *)&optlen)< 0) {
2209 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2214 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2216 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2218 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2219 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2220 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2225 static void net_socket_accept(void *opaque)
2227 NetSocketListenState *s = opaque;
2229 struct sockaddr_in saddr;
2234 len = sizeof(saddr);
2235 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2236 if (fd < 0 && errno != EINTR) {
2238 } else if (fd >= 0) {
2242 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2246 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2247 "socket: connection from %s:%d",
2248 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2252 static int net_socket_listen_init(VLANState *vlan,
2255 const char *host_str)
2257 NetSocketListenState *s;
2259 struct sockaddr_in saddr;
2261 if (parse_host_port(&saddr, host_str) < 0)
2264 s = qemu_mallocz(sizeof(NetSocketListenState));
2266 fd = socket(PF_INET, SOCK_STREAM, 0);
2271 socket_set_nonblock(fd);
2273 /* allow fast reuse */
2275 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2277 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2282 ret = listen(fd, 0);
2288 s->model = qemu_strdup(model);
2289 s->name = name ? qemu_strdup(name) : NULL;
2291 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2295 static int net_socket_connect_init(VLANState *vlan,
2298 const char *host_str)
2301 int fd, connected, ret, err;
2302 struct sockaddr_in saddr;
2304 if (parse_host_port(&saddr, host_str) < 0)
2307 fd = socket(PF_INET, SOCK_STREAM, 0);
2312 socket_set_nonblock(fd);
2316 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2318 err = socket_error();
2319 if (err == EINTR || err == EWOULDBLOCK) {
2320 } else if (err == EINPROGRESS) {
2323 } else if (err == WSAEALREADY) {
2336 s = net_socket_fd_init(vlan, model, name, fd, connected);
2339 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2340 "socket: connect to %s:%d",
2341 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2345 static int net_socket_mcast_init(VLANState *vlan,
2348 const char *host_str)
2352 struct sockaddr_in saddr;
2354 if (parse_host_port(&saddr, host_str) < 0)
2358 fd = net_socket_mcast_create(&saddr);
2362 s = net_socket_fd_init(vlan, model, name, fd, 0);
2366 s->dgram_dst = saddr;
2368 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2369 "socket: mcast=%s:%d",
2370 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2375 typedef struct DumpState {
2376 VLANClientState *pcap_vc;
2381 #define PCAP_MAGIC 0xa1b2c3d4
2383 struct pcap_file_hdr {
2385 uint16_t version_major;
2386 uint16_t version_minor;
2393 struct pcap_sf_pkthdr {
2402 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2404 DumpState *s = vc->opaque;
2405 struct pcap_sf_pkthdr hdr;
2409 /* Early return in case of previous error. */
2414 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
2415 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2417 hdr.ts.tv_sec = ts / 1000000;
2418 hdr.ts.tv_usec = ts % 1000000;
2419 hdr.caplen = caplen;
2421 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2422 write(s->fd, buf, caplen) != caplen) {
2423 qemu_log("-net dump write error - stop dump\n");
2431 static void net_dump_cleanup(VLANClientState *vc)
2433 DumpState *s = vc->opaque;
2439 static int net_dump_init(VLANState *vlan, const char *device,
2440 const char *name, const char *filename, int len)
2442 struct pcap_file_hdr hdr;
2445 s = qemu_malloc(sizeof(DumpState));
2447 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2449 qemu_error("-net dump: can't open %s\n", filename);
2453 s->pcap_caplen = len;
2455 hdr.magic = PCAP_MAGIC;
2456 hdr.version_major = 2;
2457 hdr.version_minor = 4;
2460 hdr.snaplen = s->pcap_caplen;
2463 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2464 qemu_error("-net dump write error: %s\n", strerror(errno));
2470 s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
2471 vlan, NULL, device, name, NULL,
2472 dump_receive, NULL, NULL,
2473 net_dump_cleanup, s);
2474 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2475 "dump to %s (len=%d)", filename, len);
2479 /* find or alloc a new VLAN */
2480 VLANState *qemu_find_vlan(int id, int allocate)
2484 QTAILQ_FOREACH(vlan, &vlans, next) {
2485 if (vlan->id == id) {
2494 vlan = qemu_mallocz(sizeof(VLANState));
2496 QTAILQ_INIT(&vlan->clients);
2498 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
2499 qemu_vlan_deliver_packet_iov,
2502 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2507 VLANClientState *qemu_find_netdev(const char *id)
2509 VLANClientState *vc;
2511 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2512 if (!strcmp(vc->name, id)) {
2520 static int nic_get_free_idx(void)
2524 for (index = 0; index < MAX_NICS; index++)
2525 if (!nd_table[index].used)
2530 int qemu_show_nic_models(const char *arg, const char *const *models)
2534 if (!arg || strcmp(arg, "?"))
2537 fprintf(stderr, "qemu: Supported NIC models: ");
2538 for (i = 0 ; models[i]; i++)
2539 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2543 void qemu_check_nic_model(NICInfo *nd, const char *model)
2545 const char *models[2];
2550 if (qemu_show_nic_models(nd->model, models))
2552 if (qemu_find_nic_model(nd, models, model) < 0)
2556 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2557 const char *default_model)
2562 nd->model = qemu_strdup(default_model);
2564 for (i = 0 ; models[i]; i++) {
2565 if (strcmp(nd->model, models[i]) == 0)
2569 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2573 static int net_handle_fd_param(Monitor *mon, const char *param)
2575 if (!qemu_isdigit(param[0])) {
2578 fd = monitor_get_fd(mon, param);
2580 qemu_error("No file descriptor named %s found", param);
2586 return strtol(param, NULL, 0);
2590 static int net_init_nic(QemuOpts *opts,
2599 idx = nic_get_free_idx();
2600 if (idx == -1 || nb_nics >= MAX_NICS) {
2601 qemu_error("Too Many NICs\n");
2605 nd = &nd_table[idx];
2607 memset(nd, 0, sizeof(*nd));
2609 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2610 nd->netdev = qemu_find_netdev(netdev);
2612 qemu_error("netdev '%s' not found\n", netdev);
2620 nd->name = qemu_strdup(name);
2622 if (qemu_opt_get(opts, "model")) {
2623 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2625 if (qemu_opt_get(opts, "addr")) {
2626 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2629 nd->macaddr[0] = 0x52;
2630 nd->macaddr[1] = 0x54;
2631 nd->macaddr[2] = 0x00;
2632 nd->macaddr[3] = 0x12;
2633 nd->macaddr[4] = 0x34;
2634 nd->macaddr[5] = 0x56 + idx;
2636 if (qemu_opt_get(opts, "macaddr") &&
2637 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2638 qemu_error("invalid syntax for ethernet address\n");
2642 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2643 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2644 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2645 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2651 nd->vlan->nb_guest_devs++;
2658 #if defined(CONFIG_SLIRP)
2659 static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2661 struct slirp_config_str *config;
2663 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2667 config = qemu_mallocz(sizeof(*config));
2669 pstrcpy(config->str, sizeof(config->str), value);
2671 if (!strcmp(name, "hostfwd")) {
2672 config->flags = SLIRP_CFG_HOSTFWD;
2675 config->next = slirp_configs;
2676 slirp_configs = config;
2681 static int net_init_slirp(QemuOpts *opts,
2686 struct slirp_config_str *config;
2688 const char *vhostname;
2689 const char *vdhcp_start;
2690 const char *vnamesrv;
2691 const char *tftp_export;
2692 const char *bootfile;
2693 const char *smb_export;
2694 const char *vsmbsrv;
2699 vhost = qemu_opt_get(opts, "host");
2700 vhostname = qemu_opt_get(opts, "hostname");
2701 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2702 vnamesrv = qemu_opt_get(opts, "dns");
2703 tftp_export = qemu_opt_get(opts, "tftp");
2704 bootfile = qemu_opt_get(opts, "bootfile");
2705 smb_export = qemu_opt_get(opts, "smb");
2706 vsmbsrv = qemu_opt_get(opts, "smbserver");
2708 if (qemu_opt_get(opts, "ip")) {
2709 const char *ip = qemu_opt_get(opts, "ip");
2710 int l = strlen(ip) + strlen("/24") + 1;
2712 vnet = qemu_malloc(l);
2714 /* emulate legacy ip= parameter */
2715 pstrcpy(vnet, l, ip);
2716 pstrcat(vnet, l, "/24");
2719 if (qemu_opt_get(opts, "net")) {
2723 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2726 if (qemu_opt_get(opts, "restrict") &&
2727 qemu_opt_get(opts, "restrict")[0] == 'y') {
2731 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2733 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2734 vhostname, tftp_export, bootfile, vdhcp_start,
2735 vnamesrv, smb_export, vsmbsrv);
2737 while (slirp_configs) {
2738 config = slirp_configs;
2739 slirp_configs = config->next;
2743 if (ret != -1 && vlan) {
2744 vlan->nb_host_devs++;
2751 #endif /* CONFIG_SLIRP */
2754 static int net_init_tap_win32(QemuOpts *opts,
2761 ifname = qemu_opt_get(opts, "ifname");
2764 qemu_error("tap: no interface name\n");
2768 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2773 vlan->nb_host_devs++;
2778 #elif !defined(_AIX)
2779 static int net_init_tap(QemuOpts *opts,
2787 if (qemu_opt_get(opts, "fd")) {
2788 if (qemu_opt_get(opts, "ifname") ||
2789 qemu_opt_get(opts, "script") ||
2790 qemu_opt_get(opts, "downscript") ||
2791 qemu_opt_get(opts, "vnet_hdr")) {
2792 qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
2796 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2801 fcntl(fd, F_SETFL, O_NONBLOCK);
2803 vnet_hdr = tap_probe_vnet_hdr(fd);
2805 if (!qemu_opt_get(opts, "script")) {
2806 qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
2809 if (!qemu_opt_get(opts, "downscript")) {
2810 qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
2813 fd = net_tap_init(opts, &vnet_hdr);
2816 s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
2822 if (tap_set_sndbuf(s, opts) < 0) {
2826 if (qemu_opt_get(opts, "fd")) {
2827 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
2829 const char *ifname, *script, *downscript;
2831 ifname = qemu_opt_get(opts, "ifname");
2832 script = qemu_opt_get(opts, "script");
2833 downscript = qemu_opt_get(opts, "downscript");
2835 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2836 "ifname=%s,script=%s,downscript=%s",
2837 ifname, script, downscript);
2839 if (strcmp(downscript, "no") != 0) {
2840 snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
2841 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
2846 vlan->nb_host_devs++;
2853 static int net_init_socket(QemuOpts *opts,
2858 if (qemu_opt_get(opts, "fd")) {
2861 if (qemu_opt_get(opts, "listen") ||
2862 qemu_opt_get(opts, "connect") ||
2863 qemu_opt_get(opts, "mcast")) {
2864 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2868 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2873 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2877 } else if (qemu_opt_get(opts, "listen")) {
2880 if (qemu_opt_get(opts, "fd") ||
2881 qemu_opt_get(opts, "connect") ||
2882 qemu_opt_get(opts, "mcast")) {
2883 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2887 listen = qemu_opt_get(opts, "listen");
2889 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2892 } else if (qemu_opt_get(opts, "connect")) {
2893 const char *connect;
2895 if (qemu_opt_get(opts, "fd") ||
2896 qemu_opt_get(opts, "listen") ||
2897 qemu_opt_get(opts, "mcast")) {
2898 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2902 connect = qemu_opt_get(opts, "connect");
2904 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2907 } else if (qemu_opt_get(opts, "mcast")) {
2910 if (qemu_opt_get(opts, "fd") ||
2911 qemu_opt_get(opts, "connect") ||
2912 qemu_opt_get(opts, "listen")) {
2913 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2917 mcast = qemu_opt_get(opts, "mcast");
2919 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2923 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2928 vlan->nb_host_devs++;
2935 static int net_init_vde(QemuOpts *opts,
2944 sock = qemu_opt_get(opts, "sock");
2945 group = qemu_opt_get(opts, "group");
2947 port = qemu_opt_get_number(opts, "port", 0);
2948 mode = qemu_opt_get_number(opts, "mode", 0700);
2950 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2955 vlan->nb_host_devs++;
2962 static int net_init_dump(QemuOpts *opts,
2973 file = qemu_opt_get(opts, "file");
2975 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2979 len = qemu_opt_get_size(opts, "len", 65536);
2981 return net_dump_init(vlan, "dump", name, file, len);
2984 #define NET_COMMON_PARAMS_DESC \
2987 .type = QEMU_OPT_STRING, \
2988 .help = "net client type (nic, tap etc.)", \
2991 .type = QEMU_OPT_NUMBER, \
2992 .help = "vlan number", \
2995 .type = QEMU_OPT_STRING, \
2996 .help = "identifier for monitor commands", \
2999 typedef int (*net_client_init_func)(QemuOpts *opts,
3004 /* magic number, but compiler will warn if too small */
3005 #define NET_MAX_DESC 20
3009 net_client_init_func init;
3010 QemuOptDesc desc[NET_MAX_DESC];
3011 } net_client_types[] = {
3015 NET_COMMON_PARAMS_DESC,
3016 { /* end of list */ }
3020 .init = net_init_nic,
3022 NET_COMMON_PARAMS_DESC,
3025 .type = QEMU_OPT_STRING,
3026 .help = "id of -netdev to connect to",
3030 .type = QEMU_OPT_STRING,
3031 .help = "MAC address",
3034 .type = QEMU_OPT_STRING,
3035 .help = "device model (e1000, rtl8139, virtio etc.)",
3038 .type = QEMU_OPT_STRING,
3039 .help = "PCI device address",
3042 .type = QEMU_OPT_NUMBER,
3043 .help = "number of MSI-x vectors, 0 to disable MSI-X",
3045 { /* end of list */ }
3050 .init = net_init_slirp,
3052 NET_COMMON_PARAMS_DESC,
3055 .type = QEMU_OPT_STRING,
3056 .help = "client hostname reported by the builtin DHCP server",
3059 .type = QEMU_OPT_STRING,
3060 .help = "isolate the guest from the host (y|yes|n|no)",
3063 .type = QEMU_OPT_STRING,
3064 .help = "legacy parameter, use net= instead",
3067 .type = QEMU_OPT_STRING,
3068 .help = "IP address and optional netmask",
3071 .type = QEMU_OPT_STRING,
3072 .help = "guest-visible address of the host",
3075 .type = QEMU_OPT_STRING,
3076 .help = "root directory of the built-in TFTP server",
3079 .type = QEMU_OPT_STRING,
3080 .help = "BOOTP filename, for use with tftp=",
3082 .name = "dhcpstart",
3083 .type = QEMU_OPT_STRING,
3084 .help = "the first of the 16 IPs the built-in DHCP server can assign",
3087 .type = QEMU_OPT_STRING,
3088 .help = "guest-visible address of the virtual nameserver",
3091 .type = QEMU_OPT_STRING,
3092 .help = "root directory of the built-in SMB server",
3094 .name = "smbserver",
3095 .type = QEMU_OPT_STRING,
3096 .help = "IP address of the built-in SMB server",
3099 .type = QEMU_OPT_STRING,
3100 .help = "guest port number to forward incoming TCP or UDP connections",
3103 .type = QEMU_OPT_STRING,
3104 .help = "IP address and port to forward guest TCP connections",
3106 { /* end of list */ }
3112 .init = net_init_tap_win32,
3114 NET_COMMON_PARAMS_DESC,
3117 .type = QEMU_OPT_STRING,
3118 .help = "interface name",
3120 { /* end of list */ }
3122 #elif !defined(_AIX)
3125 .init = net_init_tap,
3127 NET_COMMON_PARAMS_DESC,
3130 .type = QEMU_OPT_STRING,
3131 .help = "file descriptor of an already opened tap",
3134 .type = QEMU_OPT_STRING,
3135 .help = "interface name",
3138 .type = QEMU_OPT_STRING,
3139 .help = "script to initialize the interface",
3141 .name = "downscript",
3142 .type = QEMU_OPT_STRING,
3143 .help = "script to shut down the interface",
3146 .type = QEMU_OPT_SIZE,
3147 .help = "send buffer limit"
3150 .type = QEMU_OPT_BOOL,
3151 .help = "enable the IFF_VNET_HDR flag on the tap interface"
3153 { /* end of list */ }
3158 .init = net_init_socket,
3160 NET_COMMON_PARAMS_DESC,
3163 .type = QEMU_OPT_STRING,
3164 .help = "file descriptor of an already opened socket",
3167 .type = QEMU_OPT_STRING,
3168 .help = "port number, and optional hostname, to listen on",
3171 .type = QEMU_OPT_STRING,
3172 .help = "port number, and optional hostname, to connect to",
3175 .type = QEMU_OPT_STRING,
3176 .help = "UDP multicast address and port number",
3178 { /* end of list */ }
3183 .init = net_init_vde,
3185 NET_COMMON_PARAMS_DESC,
3188 .type = QEMU_OPT_STRING,
3189 .help = "socket path",
3192 .type = QEMU_OPT_NUMBER,
3193 .help = "port number",
3196 .type = QEMU_OPT_STRING,
3197 .help = "group owner of socket",
3200 .type = QEMU_OPT_NUMBER,
3201 .help = "permissions for socket",
3203 { /* end of list */ }
3208 .init = net_init_dump,
3210 NET_COMMON_PARAMS_DESC,
3213 .type = QEMU_OPT_SIZE,
3214 .help = "per-packet size limit (64k default)",
3217 .type = QEMU_OPT_STRING,
3218 .help = "dump file path (default is qemu-vlan0.pcap)",
3220 { /* end of list */ }
3223 { /* end of list */ }
3226 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
3232 type = qemu_opt_get(opts, "type");
3234 qemu_error("No type specified for -net\n");
3239 if (strcmp(type, "tap") != 0 &&
3241 strcmp(type, "user") != 0 &&
3244 strcmp(type, "vde") != 0 &&
3246 strcmp(type, "socket") != 0) {
3247 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3252 if (qemu_opt_get(opts, "vlan")) {
3253 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3256 if (qemu_opt_get(opts, "name")) {
3257 qemu_error("The 'name' parameter is not valid with -netdev\n");
3260 if (!qemu_opts_id(opts)) {
3261 qemu_error("The id= parameter is required with -netdev\n");
3266 name = qemu_opts_id(opts);
3268 name = qemu_opt_get(opts, "name");
3271 for (i = 0; net_client_types[i].type != NULL; i++) {
3272 if (!strcmp(net_client_types[i].type, type)) {
3273 VLANState *vlan = NULL;
3275 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3279 /* Do not add to a vlan if it's a -netdev or a nic with a
3280 * netdev= parameter. */
3282 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
3283 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3286 if (net_client_types[i].init) {
3287 return net_client_types[i].init(opts, mon, name, vlan);
3294 qemu_error("Invalid -net type '%s'\n", type);
3298 void net_client_uninit(NICInfo *nd)
3301 nd->vlan->nb_guest_devs--;
3305 qemu_free(nd->model);
3306 qemu_free(nd->name);
3307 qemu_free(nd->devaddr);
3312 static int net_host_check_device(const char *device)
3315 const char *valid_param_list[] = { "tap", "socket", "dump"
3323 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3324 if (!strncmp(valid_param_list[i], device,
3325 strlen(valid_param_list[i])))
3332 void net_host_device_add(Monitor *mon, const QDict *qdict)
3334 const char *device = qdict_get_str(qdict, "device");
3335 const char *opts_str = qdict_get_try_str(qdict, "opts");
3338 if (!net_host_check_device(device)) {
3339 monitor_printf(mon, "invalid host network device %s\n", device);
3343 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3345 monitor_printf(mon, "parsing network options '%s' failed\n",
3346 opts_str ? opts_str : "");
3350 qemu_opt_set(opts, "type", device);
3352 if (net_client_init(mon, opts, 0) < 0) {
3353 monitor_printf(mon, "adding host network device %s failed\n", device);
3357 void net_host_device_remove(Monitor *mon, const QDict *qdict)
3359 VLANClientState *vc;
3360 int vlan_id = qdict_get_int(qdict, "vlan_id");
3361 const char *device = qdict_get_str(qdict, "device");
3363 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
3367 if (!net_host_check_device(vc->model)) {
3368 monitor_printf(mon, "invalid host network device %s\n", device);
3371 qemu_del_vlan_client(vc);
3374 void net_set_boot_mask(int net_boot_mask)
3378 /* Only the first four NICs may be bootable */
3379 net_boot_mask = net_boot_mask & 0xF;
3381 for (i = 0; i < nb_nics; i++) {
3382 if (net_boot_mask & (1 << i)) {
3383 nd_table[i].bootable = 1;
3384 net_boot_mask &= ~(1 << i);
3388 if (net_boot_mask) {
3389 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3394 void do_info_network(Monitor *mon)
3398 QTAILQ_FOREACH(vlan, &vlans, next) {
3399 VLANClientState *vc;
3401 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
3403 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3404 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
3409 void do_set_link(Monitor *mon, const QDict *qdict)
3412 VLANClientState *vc = NULL;
3413 const char *name = qdict_get_str(qdict, "name");
3414 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
3416 QTAILQ_FOREACH(vlan, &vlans, next) {
3417 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3418 if (strcmp(vc->name, name) == 0) {
3426 monitor_printf(mon, "could not find network device '%s'\n", name);
3430 if (strcmp(up_or_down, "up") == 0)
3432 else if (strcmp(up_or_down, "down") == 0)
3435 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3436 "valid\n", up_or_down);
3438 if (vc->link_status_changed)
3439 vc->link_status_changed(vc);
3442 void net_cleanup(void)
3445 VLANClientState *vc, *next_vc;
3447 QTAILQ_FOREACH(vlan, &vlans, next) {
3448 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
3449 qemu_del_vlan_client(vc);
3453 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3454 qemu_del_vlan_client(vc);
3458 static void net_check_clients(void)
3462 QTAILQ_FOREACH(vlan, &vlans, next) {
3463 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3465 if (vlan->nb_guest_devs == 0)
3466 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3467 if (vlan->nb_host_devs == 0)
3469 "Warning: vlan %d is not connected to host network\n",
3474 static int net_init_client(QemuOpts *opts, void *dummy)
3476 if (net_client_init(NULL, opts, 0) < 0)
3481 static int net_init_netdev(QemuOpts *opts, void *dummy)
3483 return net_client_init(NULL, opts, 1);
3486 int net_init_clients(void)
3488 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3489 /* if no clients, we use a default config */
3490 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3492 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3496 QTAILQ_INIT(&vlans);
3497 QTAILQ_INIT(&non_vlan_clients);
3499 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3502 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3506 net_check_clients();
3511 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
3513 #if defined(CONFIG_SLIRP)
3514 /* handle legacy -net channel,port:chr */
3515 if (!strcmp(opts_list->name, "net") &&
3516 !strncmp(optarg, "channel,", strlen("channel,"))) {
3519 optarg += strlen("channel,");
3521 if (QTAILQ_EMPTY(&slirp_stacks)) {
3522 struct slirp_config_str *config;
3524 config = qemu_malloc(sizeof(*config));
3525 pstrcpy(config->str, sizeof(config->str), optarg);
3526 config->flags = SLIRP_CFG_LEGACY;
3527 config->next = slirp_configs;
3528 slirp_configs = config;
3531 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3537 if (!qemu_opts_parse(opts_list, optarg, "type")) {