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,
323 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
324 const struct iovec *iov,
328 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
329 VLANClientState *peer,
332 NetCanReceive *can_receive,
334 NetReceiveIOV *receive_iov,
340 vc = qemu_mallocz(sizeof(VLANClientState));
342 vc->model = qemu_strdup(model);
344 vc->name = qemu_strdup(name);
346 vc->name = assign_name(vc, model);
347 vc->can_receive = can_receive;
348 vc->receive = receive;
349 vc->receive_iov = receive_iov;
350 vc->cleanup = cleanup;
356 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
362 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
364 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
365 qemu_deliver_packet_iov,
372 void qemu_del_vlan_client(VLANClientState *vc)
375 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
377 if (vc->send_queue) {
378 qemu_del_net_queue(vc->send_queue);
380 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
382 vc->peer->peer = NULL;
391 qemu_free(vc->model);
395 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
399 QTAILQ_FOREACH(vc, &vlan->clients, next) {
400 if (vc->opaque == opaque) {
408 static VLANClientState *
409 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
410 const char *client_str)
415 vlan = qemu_find_vlan(vlan_id, 0);
417 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
421 QTAILQ_FOREACH(vc, &vlan->clients, next) {
422 if (!strcmp(vc->name, client_str)) {
427 monitor_printf(mon, "can't find device %s on VLAN %d\n",
428 client_str, vlan_id);
434 int qemu_can_send_packet(VLANClientState *sender)
436 VLANState *vlan = sender->vlan;
440 if (!sender->peer->can_receive ||
441 sender->peer->can_receive(sender->peer)) {
452 QTAILQ_FOREACH(vc, &vlan->clients, next) {
457 /* no can_receive() handler, they can always receive */
458 if (!vc->can_receive || vc->can_receive(vc)) {
465 static ssize_t qemu_deliver_packet(VLANClientState *sender,
470 VLANClientState *vc = opaque;
476 return vc->receive(vc, data, size);
479 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
484 VLANState *vlan = opaque;
488 QTAILQ_FOREACH(vc, &vlan->clients, next) {
500 len = vc->receive(vc, buf, size);
502 ret = (ret >= 0) ? ret : len;
508 void qemu_purge_queued_packets(VLANClientState *vc)
512 if (!vc->peer && !vc->vlan) {
517 queue = vc->peer->send_queue;
519 queue = vc->vlan->send_queue;
522 qemu_net_queue_purge(queue, vc);
525 void qemu_flush_queued_packets(VLANClientState *vc)
530 queue = vc->vlan->send_queue;
532 queue = vc->send_queue;
535 qemu_net_queue_flush(queue);
538 ssize_t qemu_send_packet_async(VLANClientState *sender,
539 const uint8_t *buf, int size,
540 NetPacketSent *sent_cb)
545 printf("qemu_send_packet_async:\n");
546 hex_dump(stdout, buf, size);
549 if (sender->link_down || (!sender->peer && !sender->vlan)) {
554 queue = sender->peer->send_queue;
556 queue = sender->vlan->send_queue;
559 return qemu_net_queue_send(queue, sender, buf, size, sent_cb);
562 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
564 qemu_send_packet_async(vc, buf, size, NULL);
567 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
570 uint8_t buffer[4096];
574 for (i = 0; i < iovcnt; i++) {
577 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
578 memcpy(buffer + offset, iov[i].iov_base, len);
582 return vc->receive(vc, buffer, offset);
585 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
590 for (i = 0; i < iovcnt; i++)
591 offset += iov[i].iov_len;
595 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
596 const struct iovec *iov,
600 VLANClientState *vc = opaque;
603 return calc_iov_length(iov, iovcnt);
606 if (vc->receive_iov) {
607 return vc->receive_iov(vc, iov, iovcnt);
609 return vc_sendv_compat(vc, iov, iovcnt);
613 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
614 const struct iovec *iov,
618 VLANState *vlan = opaque;
622 QTAILQ_FOREACH(vc, &vlan->clients, next) {
630 ret = calc_iov_length(iov, iovcnt);
634 if (vc->receive_iov) {
635 len = vc->receive_iov(vc, iov, iovcnt);
637 len = vc_sendv_compat(vc, iov, iovcnt);
640 ret = (ret >= 0) ? ret : len;
646 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
647 const struct iovec *iov, int iovcnt,
648 NetPacketSent *sent_cb)
652 if (sender->link_down || (!sender->peer && !sender->vlan)) {
653 return calc_iov_length(iov, iovcnt);
657 queue = sender->peer->send_queue;
659 queue = sender->vlan->send_queue;
662 return qemu_net_queue_send_iov(queue, sender, iov, iovcnt, sent_cb);
666 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
668 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
671 #if defined(CONFIG_SLIRP)
673 /* slirp network adapter */
675 #define SLIRP_CFG_HOSTFWD 1
676 #define SLIRP_CFG_LEGACY 2
678 struct slirp_config_str {
679 struct slirp_config_str *next;
685 typedef struct SlirpState {
686 QTAILQ_ENTRY(SlirpState) entry;
694 static struct slirp_config_str *slirp_configs;
695 const char *legacy_tftp_prefix;
696 const char *legacy_bootp_filename;
697 static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
698 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
700 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
702 static int slirp_guestfwd(SlirpState *s, const char *config_str,
706 static const char *legacy_smb_export;
708 static int slirp_smb(SlirpState *s, const char *exported_dir,
709 struct in_addr vserver_addr);
710 static void slirp_smb_cleanup(SlirpState *s);
712 static inline void slirp_smb_cleanup(SlirpState *s) { }
715 int slirp_can_output(void *opaque)
717 SlirpState *s = opaque;
719 return qemu_can_send_packet(s->vc);
722 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
724 SlirpState *s = opaque;
727 printf("slirp output:\n");
728 hex_dump(stdout, pkt, pkt_len);
730 qemu_send_packet(s->vc, pkt, pkt_len);
733 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
735 SlirpState *s = vc->opaque;
738 printf("slirp input:\n");
739 hex_dump(stdout, buf, size);
741 slirp_input(s->slirp, buf, size);
745 static void net_slirp_cleanup(VLANClientState *vc)
747 SlirpState *s = vc->opaque;
749 slirp_cleanup(s->slirp);
750 slirp_smb_cleanup(s);
751 QTAILQ_REMOVE(&slirp_stacks, s, entry);
755 static int net_slirp_init(VLANState *vlan, const char *model,
756 const char *name, int restricted,
757 const char *vnetwork, const char *vhost,
758 const char *vhostname, const char *tftp_export,
759 const char *bootfile, const char *vdhcp_start,
760 const char *vnameserver, const char *smb_export,
761 const char *vsmbserver)
763 /* default settings according to historic slirp */
764 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
765 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
766 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
767 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
768 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
770 struct in_addr smbsrv = { .s_addr = 0 };
777 struct slirp_config_str *config;
780 tftp_export = legacy_tftp_prefix;
783 bootfile = legacy_bootp_filename;
787 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
788 if (!inet_aton(vnetwork, &net)) {
791 addr = ntohl(net.s_addr);
792 if (!(addr & 0x80000000)) {
793 mask.s_addr = htonl(0xff000000); /* class A */
794 } else if ((addr & 0xfff00000) == 0xac100000) {
795 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
796 } else if ((addr & 0xc0000000) == 0x80000000) {
797 mask.s_addr = htonl(0xffff0000); /* class B */
798 } else if ((addr & 0xffff0000) == 0xc0a80000) {
799 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
800 } else if ((addr & 0xffff0000) == 0xc6120000) {
801 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
802 } else if ((addr & 0xe0000000) == 0xe0000000) {
803 mask.s_addr = htonl(0xffffff00); /* class C */
805 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
808 if (!inet_aton(buf, &net)) {
811 shift = strtol(vnetwork, &end, 10);
813 if (!inet_aton(vnetwork, &mask)) {
816 } else if (shift < 4 || shift > 32) {
819 mask.s_addr = htonl(0xffffffff << (32 - shift));
822 net.s_addr &= mask.s_addr;
823 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
824 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
825 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
828 if (vhost && !inet_aton(vhost, &host)) {
831 if ((host.s_addr & mask.s_addr) != net.s_addr) {
835 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
838 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
839 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
843 if (vnameserver && !inet_aton(vnameserver, &dns)) {
846 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
847 dns.s_addr == host.s_addr) {
852 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
857 s = qemu_mallocz(sizeof(SlirpState));
858 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
859 tftp_export, bootfile, dhcp, dns, s);
860 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
862 for (config = slirp_configs; config; config = config->next) {
863 if (config->flags & SLIRP_CFG_HOSTFWD) {
864 if (slirp_hostfwd(s, config->str,
865 config->flags & SLIRP_CFG_LEGACY) < 0)
868 if (slirp_guestfwd(s, config->str,
869 config->flags & SLIRP_CFG_LEGACY) < 0)
875 smb_export = legacy_smb_export;
878 if (slirp_smb(s, smb_export, smbsrv) < 0)
883 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
885 net_slirp_cleanup, s);
886 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
887 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
891 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
897 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
901 if (strcmp(vc->model, "user")) {
902 monitor_printf(mon, "invalid device specified\n");
907 if (QTAILQ_EMPTY(&slirp_stacks)) {
908 monitor_printf(mon, "user mode network stack not in use\n");
911 return QTAILQ_FIRST(&slirp_stacks);
915 void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
917 struct in_addr host_addr = { .s_addr = INADDR_ANY };
920 const char *src_str, *p;
924 const char *arg1 = qdict_get_str(qdict, "arg1");
925 const char *arg2 = qdict_get_try_str(qdict, "arg2");
926 const char *arg3 = qdict_get_try_str(qdict, "arg3");
929 s = slirp_lookup(mon, arg1, arg2);
932 s = slirp_lookup(mon, NULL, NULL);
939 if (!src_str || !src_str[0])
943 get_str_sep(buf, sizeof(buf), &p, ':');
945 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
947 } else if (!strcmp(buf, "udp")) {
953 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
956 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
962 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
963 host_addr, host_port);
965 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
966 err ? "removed" : "not found");
970 monitor_printf(mon, "invalid format\n");
973 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
976 struct in_addr host_addr = { .s_addr = INADDR_ANY };
977 struct in_addr guest_addr = { .s_addr = 0 };
978 int host_port, guest_port;
985 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
988 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
990 } else if (!strcmp(buf, "udp")) {
996 if (!legacy_format) {
997 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1000 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1005 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
1008 host_port = strtol(buf, &end, 0);
1009 if (*end != '\0' || host_port < 1 || host_port > 65535) {
1013 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1016 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1020 guest_port = strtol(p, &end, 0);
1021 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1025 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1027 qemu_error("could not set up host forwarding rule '%s'\n",
1034 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
1038 void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
1040 const char *redir_str;
1042 const char *arg1 = qdict_get_str(qdict, "arg1");
1043 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1044 const char *arg3 = qdict_get_try_str(qdict, "arg3");
1047 s = slirp_lookup(mon, arg1, arg2);
1050 s = slirp_lookup(mon, NULL, NULL);
1054 slirp_hostfwd(s, redir_str, 0);
1059 int net_slirp_redir(const char *redir_str)
1061 struct slirp_config_str *config;
1063 if (QTAILQ_EMPTY(&slirp_stacks)) {
1064 config = qemu_malloc(sizeof(*config));
1065 pstrcpy(config->str, sizeof(config->str), redir_str);
1066 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1067 config->next = slirp_configs;
1068 slirp_configs = config;
1072 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
1077 /* automatic user mode samba server configuration */
1078 static void slirp_smb_cleanup(SlirpState *s)
1082 if (s->smb_dir[0] != '\0') {
1083 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1085 s->smb_dir[0] = '\0';
1089 static int slirp_smb(SlirpState* s, const char *exported_dir,
1090 struct in_addr vserver_addr)
1092 static int instance;
1094 char smb_cmdline[128];
1097 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1098 (long)getpid(), instance++);
1099 if (mkdir(s->smb_dir, 0700) < 0) {
1100 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
1103 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1105 f = fopen(smb_conf, "w");
1107 slirp_smb_cleanup(s);
1108 qemu_error("could not create samba server configuration file '%s'\n",
1116 "socket address=127.0.0.1\n"
1117 "pid directory=%s\n"
1118 "lock directory=%s\n"
1119 "log file=%s/log.smbd\n"
1120 "smb passwd file=%s/smbpasswd\n"
1121 "security = share\n"
1135 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1136 SMBD_COMMAND, smb_conf);
1138 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1139 slirp_smb_cleanup(s);
1140 qemu_error("conflicting/invalid smbserver address\n");
1146 /* automatic user mode samba server configuration (legacy interface) */
1147 int net_slirp_smb(const char *exported_dir)
1149 struct in_addr vserver_addr = { .s_addr = 0 };
1151 if (legacy_smb_export) {
1152 fprintf(stderr, "-smb given twice\n");
1155 legacy_smb_export = exported_dir;
1156 if (!QTAILQ_EMPTY(&slirp_stacks)) {
1157 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
1163 #endif /* !defined(_WIN32) */
1166 CharDriverState *hd;
1167 struct in_addr server;
1172 static int guestfwd_can_read(void *opaque)
1174 struct GuestFwd *fwd = opaque;
1175 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1178 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1180 struct GuestFwd *fwd = opaque;
1181 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1184 static int slirp_guestfwd(SlirpState *s, const char *config_str,
1187 struct in_addr server = { .s_addr = 0 };
1188 struct GuestFwd *fwd;
1195 if (legacy_format) {
1196 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1200 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1203 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1206 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1209 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1212 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1216 port = strtol(buf, &end, 10);
1217 if (*end != '\0' || port < 1 || port > 65535) {
1221 fwd = qemu_malloc(sizeof(struct GuestFwd));
1222 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1223 fwd->hd = qemu_chr_open(buf, p, NULL);
1225 qemu_error("could not open guest forwarding device '%s'\n", buf);
1230 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1231 qemu_error("conflicting/invalid host:port in guest forwarding "
1232 "rule '%s'\n", config_str);
1236 fwd->server = server;
1238 fwd->slirp = s->slirp;
1240 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1245 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
1249 void do_info_usernet(Monitor *mon)
1253 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
1254 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1255 slirp_connection_info(s->slirp, mon);
1259 #endif /* CONFIG_SLIRP */
1261 #if !defined(_WIN32)
1263 /* Maximum GSO packet size (64k) plus plenty of room for
1264 * the ethernet and virtio_net headers
1266 #define TAP_BUFSIZE (4096 + 65536)
1268 typedef struct TAPState {
1269 VLANClientState *vc;
1271 char down_script[1024];
1272 char down_script_arg[128];
1273 uint8_t buf[TAP_BUFSIZE];
1274 unsigned int read_poll : 1;
1275 unsigned int write_poll : 1;
1276 unsigned int has_vnet_hdr : 1;
1279 static int launch_script(const char *setup_script, const char *ifname, int fd);
1281 static int tap_can_send(void *opaque);
1282 static void tap_send(void *opaque);
1283 static void tap_writable(void *opaque);
1285 static void tap_update_fd_handler(TAPState *s)
1287 qemu_set_fd_handler2(s->fd,
1288 s->read_poll ? tap_can_send : NULL,
1289 s->read_poll ? tap_send : NULL,
1290 s->write_poll ? tap_writable : NULL,
1294 static void tap_read_poll(TAPState *s, int enable)
1296 s->read_poll = !!enable;
1297 tap_update_fd_handler(s);
1300 static void tap_write_poll(TAPState *s, int enable)
1302 s->write_poll = !!enable;
1303 tap_update_fd_handler(s);
1306 static void tap_writable(void *opaque)
1308 TAPState *s = opaque;
1310 tap_write_poll(s, 0);
1312 qemu_flush_queued_packets(s->vc);
1315 static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
1320 len = writev(s->fd, iov, iovcnt);
1321 } while (len == -1 && errno == EINTR);
1323 if (len == -1 && errno == EAGAIN) {
1324 tap_write_poll(s, 1);
1331 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1334 TAPState *s = vc->opaque;
1335 const struct iovec *iovp = iov;
1336 struct iovec iov_copy[iovcnt + 1];
1337 struct virtio_net_hdr hdr = { 0, };
1339 if (s->has_vnet_hdr) {
1340 iov_copy[0].iov_base = &hdr;
1341 iov_copy[0].iov_len = sizeof(hdr);
1342 memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
1347 return tap_write_packet(s, iovp, iovcnt);
1350 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1352 TAPState *s = vc->opaque;
1353 struct iovec iov[2];
1355 struct virtio_net_hdr hdr = { 0, };
1357 if (s->has_vnet_hdr) {
1358 iov[iovcnt].iov_base = &hdr;
1359 iov[iovcnt].iov_len = sizeof(hdr);
1363 iov[iovcnt].iov_base = (char *)buf;
1364 iov[iovcnt].iov_len = size;
1367 return tap_write_packet(s, iov, iovcnt);
1370 static int tap_can_send(void *opaque)
1372 TAPState *s = opaque;
1374 return qemu_can_send_packet(s->vc);
1378 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1383 sbuf.maxlen = maxlen;
1384 sbuf.buf = (char *)buf;
1386 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1389 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1391 return read(tapfd, buf, maxlen);
1395 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1397 TAPState *s = vc->opaque;
1398 tap_read_poll(s, 1);
1401 static void tap_send(void *opaque)
1403 TAPState *s = opaque;
1407 uint8_t *buf = s->buf;
1409 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1414 if (s->has_vnet_hdr) {
1415 buf += sizeof(struct virtio_net_hdr);
1416 size -= sizeof(struct virtio_net_hdr);
1419 size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
1421 tap_read_poll(s, 0);
1426 /* sndbuf should be set to a value lower than the tx queue
1427 * capacity of any destination network interface.
1428 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1429 * a good default, given a 1500 byte MTU.
1431 #define TAP_DEFAULT_SNDBUF 1024*1024
1433 static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
1437 sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
1442 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
1443 qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
1449 static int tap_probe_vnet_hdr(int fd)
1453 if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
1454 qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
1458 return ifr.ifr_flags & IFF_VNET_HDR;
1461 static void tap_cleanup(VLANClientState *vc)
1463 TAPState *s = vc->opaque;
1465 qemu_purge_queued_packets(vc);
1467 if (s->down_script[0])
1468 launch_script(s->down_script, s->down_script_arg, s->fd);
1470 tap_read_poll(s, 0);
1471 tap_write_poll(s, 0);
1478 static TAPState *net_tap_fd_init(VLANState *vlan,
1486 s = qemu_mallocz(sizeof(TAPState));
1488 s->has_vnet_hdr = vnet_hdr != 0;
1489 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
1490 tap_receive, tap_receive_iov,
1492 tap_read_poll(s, 1);
1496 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1497 static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
1503 TFR(fd = open("/dev/tap", O_RDWR));
1505 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1510 dev = devname(s.st_rdev, S_IFCHR);
1511 pstrcpy(ifname, ifname_size, dev);
1513 fcntl(fd, F_SETFL, O_NONBLOCK);
1516 #elif defined(__sun__)
1517 #define TUNNEWPPA (('T'<<16) | 0x0001)
1519 * Allocate TAP device, returns opened fd.
1520 * Stores dev name in the first arg(must be large enough).
1522 static int tap_alloc(char *dev, size_t dev_size)
1524 int tap_fd, if_fd, ppa = -1;
1525 static int ip_fd = 0;
1528 static int arp_fd = 0;
1529 int ip_muxid, arp_muxid;
1530 struct strioctl strioc_if, strioc_ppa;
1531 int link_type = I_PLINK;;
1533 char actual_name[32] = "";
1535 memset(&ifr, 0x0, sizeof(ifr));
1539 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1543 /* Check if IP device was opened */
1547 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1549 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1553 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1555 syslog(LOG_ERR, "Can't open /dev/tap");
1559 /* Assign a new PPA and get its unit number. */
1560 strioc_ppa.ic_cmd = TUNNEWPPA;
1561 strioc_ppa.ic_timout = 0;
1562 strioc_ppa.ic_len = sizeof(ppa);
1563 strioc_ppa.ic_dp = (char *)&ppa;
1564 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1565 syslog (LOG_ERR, "Can't assign new interface");
1567 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1569 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1572 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1573 syslog(LOG_ERR, "Can't push IP module");
1577 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1578 syslog(LOG_ERR, "Can't get flags\n");
1580 snprintf (actual_name, 32, "tap%d", ppa);
1581 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1584 /* Assign ppa according to the unit number returned by tun device */
1586 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1587 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1588 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1589 syslog (LOG_ERR, "Can't get flags\n");
1590 /* Push arp module to if_fd */
1591 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1592 syslog (LOG_ERR, "Can't push ARP module (2)");
1594 /* Push arp module to ip_fd */
1595 if (ioctl (ip_fd, I_POP, NULL) < 0)
1596 syslog (LOG_ERR, "I_POP failed\n");
1597 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1598 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1600 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1602 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1604 /* Set ifname to arp */
1605 strioc_if.ic_cmd = SIOCSLIFNAME;
1606 strioc_if.ic_timout = 0;
1607 strioc_if.ic_len = sizeof(ifr);
1608 strioc_if.ic_dp = (char *)𝔦
1609 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1610 syslog (LOG_ERR, "Can't set ifname to arp\n");
1613 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1614 syslog(LOG_ERR, "Can't link TAP device to IP");
1618 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1619 syslog (LOG_ERR, "Can't link TAP device to ARP");
1623 memset(&ifr, 0x0, sizeof(ifr));
1624 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1625 ifr.lifr_ip_muxid = ip_muxid;
1626 ifr.lifr_arp_muxid = arp_muxid;
1628 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1630 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1631 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1632 syslog (LOG_ERR, "Can't set multiplexor id");
1635 snprintf(dev, dev_size, "tap%d", ppa);
1639 static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
1643 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1644 fprintf(stderr, "Cannot allocate TAP device\n");
1647 pstrcpy(ifname, ifname_size, dev);
1648 fcntl(fd, F_SETFL, O_NONBLOCK);
1651 #elif defined (_AIX)
1652 static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
1654 fprintf (stderr, "no tap on AIX\n");
1658 static int tap_open(char *ifname, int ifname_size, int *vnet_hdr)
1663 TFR(fd = open("/dev/net/tun", O_RDWR));
1665 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1668 memset(&ifr, 0, sizeof(ifr));
1669 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1672 unsigned int features;
1674 if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
1675 features & IFF_VNET_HDR) {
1677 ifr.ifr_flags |= IFF_VNET_HDR;
1681 if (ifname[0] != '\0')
1682 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1684 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1685 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1687 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1691 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1692 fcntl(fd, F_SETFL, O_NONBLOCK);
1697 static int launch_script(const char *setup_script, const char *ifname, int fd)
1699 sigset_t oldmask, mask;
1705 sigaddset(&mask, SIGCHLD);
1706 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1708 /* try to launch network script */
1711 int open_max = sysconf(_SC_OPEN_MAX), i;
1713 for (i = 0; i < open_max; i++) {
1714 if (i != STDIN_FILENO &&
1715 i != STDOUT_FILENO &&
1716 i != STDERR_FILENO &&
1722 *parg++ = (char *)setup_script;
1723 *parg++ = (char *)ifname;
1725 execv(setup_script, args);
1727 } else if (pid > 0) {
1728 while (waitpid(pid, &status, 0) != pid) {
1731 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1733 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1737 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1741 static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
1744 char ifname[128] = {0,};
1745 const char *setup_script;
1747 if (qemu_opt_get(opts, "ifname")) {
1748 pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
1752 TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr));
1757 setup_script = qemu_opt_get(opts, "script");
1759 setup_script[0] != '\0' &&
1760 strcmp(setup_script, "no") != 0 &&
1761 launch_script(setup_script, ifname, fd)) {
1766 qemu_opt_set(opts, "ifname", ifname);
1771 #endif /* !_WIN32 */
1773 #if defined(CONFIG_VDE)
1774 typedef struct VDEState {
1775 VLANClientState *vc;
1779 static void vde_to_qemu(void *opaque)
1781 VDEState *s = opaque;
1785 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1787 qemu_send_packet(s->vc, buf, size);
1791 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1793 VDEState *s = vc->opaque;
1797 ret = vde_send(s->vde, (const char *)buf, size, 0);
1798 } while (ret < 0 && errno == EINTR);
1803 static void vde_cleanup(VLANClientState *vc)
1805 VDEState *s = vc->opaque;
1806 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1811 static int net_vde_init(VLANState *vlan, const char *model,
1812 const char *name, const char *sock,
1813 int port, const char *group, int mode)
1816 char *init_group = (char *)group;
1817 char *init_sock = (char *)sock;
1819 struct vde_open_args args = {
1821 .group = init_group,
1825 s = qemu_mallocz(sizeof(VDEState));
1826 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1831 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
1834 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1835 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1836 sock, vde_datafd(s->vde));
1841 /* network connection */
1842 typedef struct NetSocketState {
1843 VLANClientState *vc;
1845 int state; /* 0 = getting length, 1 = getting data */
1847 unsigned int packet_len;
1849 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1852 typedef struct NetSocketListenState {
1857 } NetSocketListenState;
1859 /* XXX: we consider we can send the whole packet without blocking */
1860 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1862 NetSocketState *s = vc->opaque;
1866 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1867 return send_all(s->fd, buf, size);
1870 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1872 NetSocketState *s = vc->opaque;
1874 return sendto(s->fd, (const void *)buf, size, 0,
1875 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1878 static void net_socket_send(void *opaque)
1880 NetSocketState *s = opaque;
1886 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1888 err = socket_error();
1889 if (err != EWOULDBLOCK)
1891 } else if (size == 0) {
1892 /* end of connection */
1894 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1900 /* reassemble a packet from the network */
1906 memcpy(s->buf + s->index, buf, l);
1910 if (s->index == 4) {
1912 s->packet_len = ntohl(*(uint32_t *)s->buf);
1918 l = s->packet_len - s->index;
1921 if (s->index + l <= sizeof(s->buf)) {
1922 memcpy(s->buf + s->index, buf, l);
1924 fprintf(stderr, "serious error: oversized packet received,"
1925 "connection terminated.\n");
1933 if (s->index >= s->packet_len) {
1934 qemu_send_packet(s->vc, s->buf, s->packet_len);
1943 static void net_socket_send_dgram(void *opaque)
1945 NetSocketState *s = opaque;
1948 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1952 /* end of connection */
1953 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1956 qemu_send_packet(s->vc, s->buf, size);
1959 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1964 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1965 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1966 inet_ntoa(mcastaddr->sin_addr),
1967 (int)ntohl(mcastaddr->sin_addr.s_addr));
1971 fd = socket(PF_INET, SOCK_DGRAM, 0);
1973 perror("socket(PF_INET, SOCK_DGRAM)");
1978 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1979 (const char *)&val, sizeof(val));
1981 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1985 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1991 /* Add host to multicast group */
1992 imr.imr_multiaddr = mcastaddr->sin_addr;
1993 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1995 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1996 (const char *)&imr, sizeof(struct ip_mreq));
1998 perror("setsockopt(IP_ADD_MEMBERSHIP)");
2002 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
2004 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
2005 (const char *)&val, sizeof(val));
2007 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
2011 socket_set_nonblock(fd);
2019 static void net_socket_cleanup(VLANClientState *vc)
2021 NetSocketState *s = vc->opaque;
2022 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
2027 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
2030 int fd, int is_connected)
2032 struct sockaddr_in saddr;
2034 socklen_t saddr_len;
2037 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
2038 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2039 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2043 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2045 if (saddr.sin_addr.s_addr==0) {
2046 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2050 /* clone dgram socket */
2051 newfd = net_socket_mcast_create(&saddr);
2053 /* error already reported by net_socket_mcast_create() */
2057 /* clone newfd to fd, close newfd */
2062 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2063 fd, strerror(errno));
2068 s = qemu_mallocz(sizeof(NetSocketState));
2071 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
2072 net_socket_receive_dgram, NULL,
2073 net_socket_cleanup, s);
2074 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2076 /* mcast: save bound address as dst */
2077 if (is_connected) s->dgram_dst=saddr;
2079 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2080 "socket: fd=%d (%s mcast=%s:%d)",
2081 fd, is_connected? "cloned" : "",
2082 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2086 static void net_socket_connect(void *opaque)
2088 NetSocketState *s = opaque;
2089 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2092 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2095 int fd, int is_connected)
2098 s = qemu_mallocz(sizeof(NetSocketState));
2100 s->vc = qemu_new_vlan_client(vlan, NULL, model, name, NULL,
2101 net_socket_receive, NULL,
2102 net_socket_cleanup, s);
2103 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2104 "socket: fd=%d", fd);
2106 net_socket_connect(s);
2108 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2113 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2114 const char *model, const char *name,
2115 int fd, int is_connected)
2117 int so_type = -1, optlen=sizeof(so_type);
2119 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2120 (socklen_t *)&optlen)< 0) {
2121 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2126 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2128 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2130 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2131 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2132 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2137 static void net_socket_accept(void *opaque)
2139 NetSocketListenState *s = opaque;
2141 struct sockaddr_in saddr;
2146 len = sizeof(saddr);
2147 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2148 if (fd < 0 && errno != EINTR) {
2150 } else if (fd >= 0) {
2154 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2158 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2159 "socket: connection from %s:%d",
2160 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2164 static int net_socket_listen_init(VLANState *vlan,
2167 const char *host_str)
2169 NetSocketListenState *s;
2171 struct sockaddr_in saddr;
2173 if (parse_host_port(&saddr, host_str) < 0)
2176 s = qemu_mallocz(sizeof(NetSocketListenState));
2178 fd = socket(PF_INET, SOCK_STREAM, 0);
2183 socket_set_nonblock(fd);
2185 /* allow fast reuse */
2187 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2189 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2194 ret = listen(fd, 0);
2200 s->model = qemu_strdup(model);
2201 s->name = name ? qemu_strdup(name) : NULL;
2203 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2207 static int net_socket_connect_init(VLANState *vlan,
2210 const char *host_str)
2213 int fd, connected, ret, err;
2214 struct sockaddr_in saddr;
2216 if (parse_host_port(&saddr, host_str) < 0)
2219 fd = socket(PF_INET, SOCK_STREAM, 0);
2224 socket_set_nonblock(fd);
2228 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2230 err = socket_error();
2231 if (err == EINTR || err == EWOULDBLOCK) {
2232 } else if (err == EINPROGRESS) {
2235 } else if (err == WSAEALREADY) {
2248 s = net_socket_fd_init(vlan, model, name, fd, connected);
2251 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2252 "socket: connect to %s:%d",
2253 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2257 static int net_socket_mcast_init(VLANState *vlan,
2260 const char *host_str)
2264 struct sockaddr_in saddr;
2266 if (parse_host_port(&saddr, host_str) < 0)
2270 fd = net_socket_mcast_create(&saddr);
2274 s = net_socket_fd_init(vlan, model, name, fd, 0);
2278 s->dgram_dst = saddr;
2280 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2281 "socket: mcast=%s:%d",
2282 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2287 typedef struct DumpState {
2288 VLANClientState *pcap_vc;
2293 #define PCAP_MAGIC 0xa1b2c3d4
2295 struct pcap_file_hdr {
2297 uint16_t version_major;
2298 uint16_t version_minor;
2305 struct pcap_sf_pkthdr {
2314 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2316 DumpState *s = vc->opaque;
2317 struct pcap_sf_pkthdr hdr;
2321 /* Early return in case of previous error. */
2326 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
2327 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2329 hdr.ts.tv_sec = ts / 1000000;
2330 hdr.ts.tv_usec = ts % 1000000;
2331 hdr.caplen = caplen;
2333 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2334 write(s->fd, buf, caplen) != caplen) {
2335 qemu_log("-net dump write error - stop dump\n");
2343 static void net_dump_cleanup(VLANClientState *vc)
2345 DumpState *s = vc->opaque;
2351 static int net_dump_init(VLANState *vlan, const char *device,
2352 const char *name, const char *filename, int len)
2354 struct pcap_file_hdr hdr;
2357 s = qemu_malloc(sizeof(DumpState));
2359 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2361 qemu_error("-net dump: can't open %s\n", filename);
2365 s->pcap_caplen = len;
2367 hdr.magic = PCAP_MAGIC;
2368 hdr.version_major = 2;
2369 hdr.version_minor = 4;
2372 hdr.snaplen = s->pcap_caplen;
2375 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2376 qemu_error("-net dump write error: %s\n", strerror(errno));
2382 s->pcap_vc = qemu_new_vlan_client(vlan, NULL, device, name, NULL,
2384 net_dump_cleanup, s);
2385 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2386 "dump to %s (len=%d)", filename, len);
2390 /* find or alloc a new VLAN */
2391 VLANState *qemu_find_vlan(int id, int allocate)
2395 QTAILQ_FOREACH(vlan, &vlans, next) {
2396 if (vlan->id == id) {
2405 vlan = qemu_mallocz(sizeof(VLANState));
2407 QTAILQ_INIT(&vlan->clients);
2409 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
2410 qemu_vlan_deliver_packet_iov,
2413 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
2418 VLANClientState *qemu_find_netdev(const char *id)
2420 VLANClientState *vc;
2422 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
2423 if (!strcmp(vc->name, id)) {
2431 static int nic_get_free_idx(void)
2435 for (index = 0; index < MAX_NICS; index++)
2436 if (!nd_table[index].used)
2441 int qemu_show_nic_models(const char *arg, const char *const *models)
2445 if (!arg || strcmp(arg, "?"))
2448 fprintf(stderr, "qemu: Supported NIC models: ");
2449 for (i = 0 ; models[i]; i++)
2450 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2454 void qemu_check_nic_model(NICInfo *nd, const char *model)
2456 const char *models[2];
2461 if (qemu_show_nic_models(nd->model, models))
2463 if (qemu_find_nic_model(nd, models, model) < 0)
2467 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2468 const char *default_model)
2473 nd->model = qemu_strdup(default_model);
2475 for (i = 0 ; models[i]; i++) {
2476 if (strcmp(nd->model, models[i]) == 0)
2480 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2484 static int net_handle_fd_param(Monitor *mon, const char *param)
2486 if (!qemu_isdigit(param[0])) {
2489 fd = monitor_get_fd(mon, param);
2491 qemu_error("No file descriptor named %s found", param);
2497 return strtol(param, NULL, 0);
2501 static int net_init_nic(QemuOpts *opts,
2510 idx = nic_get_free_idx();
2511 if (idx == -1 || nb_nics >= MAX_NICS) {
2512 qemu_error("Too Many NICs\n");
2516 nd = &nd_table[idx];
2518 memset(nd, 0, sizeof(*nd));
2520 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2521 nd->netdev = qemu_find_netdev(netdev);
2523 qemu_error("netdev '%s' not found\n", netdev);
2531 nd->name = qemu_strdup(name);
2533 if (qemu_opt_get(opts, "model")) {
2534 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2536 if (qemu_opt_get(opts, "addr")) {
2537 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2540 nd->macaddr[0] = 0x52;
2541 nd->macaddr[1] = 0x54;
2542 nd->macaddr[2] = 0x00;
2543 nd->macaddr[3] = 0x12;
2544 nd->macaddr[4] = 0x34;
2545 nd->macaddr[5] = 0x56 + idx;
2547 if (qemu_opt_get(opts, "macaddr") &&
2548 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2549 qemu_error("invalid syntax for ethernet address\n");
2553 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2554 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2555 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2556 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2562 nd->vlan->nb_guest_devs++;
2569 #if defined(CONFIG_SLIRP)
2570 static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2572 struct slirp_config_str *config;
2574 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2578 config = qemu_mallocz(sizeof(*config));
2580 pstrcpy(config->str, sizeof(config->str), value);
2582 if (!strcmp(name, "hostfwd")) {
2583 config->flags = SLIRP_CFG_HOSTFWD;
2586 config->next = slirp_configs;
2587 slirp_configs = config;
2592 static int net_init_slirp(QemuOpts *opts,
2597 struct slirp_config_str *config;
2599 const char *vhostname;
2600 const char *vdhcp_start;
2601 const char *vnamesrv;
2602 const char *tftp_export;
2603 const char *bootfile;
2604 const char *smb_export;
2605 const char *vsmbsrv;
2610 vhost = qemu_opt_get(opts, "host");
2611 vhostname = qemu_opt_get(opts, "hostname");
2612 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2613 vnamesrv = qemu_opt_get(opts, "dns");
2614 tftp_export = qemu_opt_get(opts, "tftp");
2615 bootfile = qemu_opt_get(opts, "bootfile");
2616 smb_export = qemu_opt_get(opts, "smb");
2617 vsmbsrv = qemu_opt_get(opts, "smbserver");
2619 if (qemu_opt_get(opts, "ip")) {
2620 const char *ip = qemu_opt_get(opts, "ip");
2621 int l = strlen(ip) + strlen("/24") + 1;
2623 vnet = qemu_malloc(l);
2625 /* emulate legacy ip= parameter */
2626 pstrcpy(vnet, l, ip);
2627 pstrcat(vnet, l, "/24");
2630 if (qemu_opt_get(opts, "net")) {
2634 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2637 if (qemu_opt_get(opts, "restrict") &&
2638 qemu_opt_get(opts, "restrict")[0] == 'y') {
2642 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2644 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2645 vhostname, tftp_export, bootfile, vdhcp_start,
2646 vnamesrv, smb_export, vsmbsrv);
2648 while (slirp_configs) {
2649 config = slirp_configs;
2650 slirp_configs = config->next;
2654 if (ret != -1 && vlan) {
2655 vlan->nb_host_devs++;
2662 #endif /* CONFIG_SLIRP */
2665 static int net_init_tap_win32(QemuOpts *opts,
2672 ifname = qemu_opt_get(opts, "ifname");
2675 qemu_error("tap: no interface name\n");
2679 if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
2684 vlan->nb_host_devs++;
2689 #elif !defined(_AIX)
2690 static int net_init_tap(QemuOpts *opts,
2698 if (qemu_opt_get(opts, "fd")) {
2699 if (qemu_opt_get(opts, "ifname") ||
2700 qemu_opt_get(opts, "script") ||
2701 qemu_opt_get(opts, "downscript")) {
2702 qemu_error("ifname=, script= and downscript= is invalid with fd=\n");
2706 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2711 fcntl(fd, F_SETFL, O_NONBLOCK);
2713 vnet_hdr = tap_probe_vnet_hdr(fd);
2715 if (!qemu_opt_get(opts, "script")) {
2716 qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
2719 if (!qemu_opt_get(opts, "downscript")) {
2720 qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
2723 fd = net_tap_init(opts, &vnet_hdr);
2726 s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
2732 if (tap_set_sndbuf(s, opts) < 0) {
2736 if (qemu_opt_get(opts, "fd")) {
2737 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
2739 const char *ifname, *script, *downscript;
2741 ifname = qemu_opt_get(opts, "ifname");
2742 script = qemu_opt_get(opts, "script");
2743 downscript = qemu_opt_get(opts, "downscript");
2745 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2746 "ifname=%s,script=%s,downscript=%s",
2747 ifname, script, downscript);
2749 if (strcmp(downscript, "no") != 0) {
2750 snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
2751 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
2756 vlan->nb_host_devs++;
2763 static int net_init_socket(QemuOpts *opts,
2768 if (qemu_opt_get(opts, "fd")) {
2771 if (qemu_opt_get(opts, "listen") ||
2772 qemu_opt_get(opts, "connect") ||
2773 qemu_opt_get(opts, "mcast")) {
2774 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2778 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2783 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2787 } else if (qemu_opt_get(opts, "listen")) {
2790 if (qemu_opt_get(opts, "fd") ||
2791 qemu_opt_get(opts, "connect") ||
2792 qemu_opt_get(opts, "mcast")) {
2793 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2797 listen = qemu_opt_get(opts, "listen");
2799 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2802 } else if (qemu_opt_get(opts, "connect")) {
2803 const char *connect;
2805 if (qemu_opt_get(opts, "fd") ||
2806 qemu_opt_get(opts, "listen") ||
2807 qemu_opt_get(opts, "mcast")) {
2808 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2812 connect = qemu_opt_get(opts, "connect");
2814 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2817 } else if (qemu_opt_get(opts, "mcast")) {
2820 if (qemu_opt_get(opts, "fd") ||
2821 qemu_opt_get(opts, "connect") ||
2822 qemu_opt_get(opts, "listen")) {
2823 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2827 mcast = qemu_opt_get(opts, "mcast");
2829 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2833 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2838 vlan->nb_host_devs++;
2845 static int net_init_vde(QemuOpts *opts,
2854 sock = qemu_opt_get(opts, "sock");
2855 group = qemu_opt_get(opts, "group");
2857 port = qemu_opt_get_number(opts, "port", 0);
2858 mode = qemu_opt_get_number(opts, "mode", 0700);
2860 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2865 vlan->nb_host_devs++;
2872 static int net_init_dump(QemuOpts *opts,
2883 file = qemu_opt_get(opts, "file");
2885 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2889 len = qemu_opt_get_size(opts, "len", 65536);
2891 return net_dump_init(vlan, "dump", name, file, len);
2894 #define NET_COMMON_PARAMS_DESC \
2897 .type = QEMU_OPT_STRING, \
2898 .help = "net client type (nic, tap etc.)", \
2901 .type = QEMU_OPT_NUMBER, \
2902 .help = "vlan number", \
2905 .type = QEMU_OPT_STRING, \
2906 .help = "identifier for monitor commands", \
2909 typedef int (*net_client_init_func)(QemuOpts *opts,
2914 /* magic number, but compiler will warn if too small */
2915 #define NET_MAX_DESC 20
2919 net_client_init_func init;
2920 QemuOptDesc desc[NET_MAX_DESC];
2921 } net_client_types[] = {
2925 NET_COMMON_PARAMS_DESC,
2926 { /* end of list */ }
2930 .init = net_init_nic,
2932 NET_COMMON_PARAMS_DESC,
2935 .type = QEMU_OPT_STRING,
2936 .help = "id of -netdev to connect to",
2940 .type = QEMU_OPT_STRING,
2941 .help = "MAC address",
2944 .type = QEMU_OPT_STRING,
2945 .help = "device model (e1000, rtl8139, virtio etc.)",
2948 .type = QEMU_OPT_STRING,
2949 .help = "PCI device address",
2952 .type = QEMU_OPT_NUMBER,
2953 .help = "number of MSI-x vectors, 0 to disable MSI-X",
2955 { /* end of list */ }
2960 .init = net_init_slirp,
2962 NET_COMMON_PARAMS_DESC,
2965 .type = QEMU_OPT_STRING,
2966 .help = "client hostname reported by the builtin DHCP server",
2969 .type = QEMU_OPT_STRING,
2970 .help = "isolate the guest from the host (y|yes|n|no)",
2973 .type = QEMU_OPT_STRING,
2974 .help = "legacy parameter, use net= instead",
2977 .type = QEMU_OPT_STRING,
2978 .help = "IP address and optional netmask",
2981 .type = QEMU_OPT_STRING,
2982 .help = "guest-visible address of the host",
2985 .type = QEMU_OPT_STRING,
2986 .help = "root directory of the built-in TFTP server",
2989 .type = QEMU_OPT_STRING,
2990 .help = "BOOTP filename, for use with tftp=",
2992 .name = "dhcpstart",
2993 .type = QEMU_OPT_STRING,
2994 .help = "the first of the 16 IPs the built-in DHCP server can assign",
2997 .type = QEMU_OPT_STRING,
2998 .help = "guest-visible address of the virtual nameserver",
3001 .type = QEMU_OPT_STRING,
3002 .help = "root directory of the built-in SMB server",
3004 .name = "smbserver",
3005 .type = QEMU_OPT_STRING,
3006 .help = "IP address of the built-in SMB server",
3009 .type = QEMU_OPT_STRING,
3010 .help = "guest port number to forward incoming TCP or UDP connections",
3013 .type = QEMU_OPT_STRING,
3014 .help = "IP address and port to forward guest TCP connections",
3016 { /* end of list */ }
3022 .init = net_init_tap_win32,
3024 NET_COMMON_PARAMS_DESC,
3027 .type = QEMU_OPT_STRING,
3028 .help = "interface name",
3030 { /* end of list */ }
3032 #elif !defined(_AIX)
3035 .init = net_init_tap,
3037 NET_COMMON_PARAMS_DESC,
3040 .type = QEMU_OPT_STRING,
3041 .help = "file descriptor of an already opened tap",
3044 .type = QEMU_OPT_STRING,
3045 .help = "interface name",
3048 .type = QEMU_OPT_STRING,
3049 .help = "script to initialize the interface",
3051 .name = "downscript",
3052 .type = QEMU_OPT_STRING,
3053 .help = "script to shut down the interface",
3056 .type = QEMU_OPT_SIZE,
3057 .help = "send buffer limit"
3059 { /* end of list */ }
3064 .init = net_init_socket,
3066 NET_COMMON_PARAMS_DESC,
3069 .type = QEMU_OPT_STRING,
3070 .help = "file descriptor of an already opened socket",
3073 .type = QEMU_OPT_STRING,
3074 .help = "port number, and optional hostname, to listen on",
3077 .type = QEMU_OPT_STRING,
3078 .help = "port number, and optional hostname, to connect to",
3081 .type = QEMU_OPT_STRING,
3082 .help = "UDP multicast address and port number",
3084 { /* end of list */ }
3089 .init = net_init_vde,
3091 NET_COMMON_PARAMS_DESC,
3094 .type = QEMU_OPT_STRING,
3095 .help = "socket path",
3098 .type = QEMU_OPT_NUMBER,
3099 .help = "port number",
3102 .type = QEMU_OPT_STRING,
3103 .help = "group owner of socket",
3106 .type = QEMU_OPT_NUMBER,
3107 .help = "permissions for socket",
3109 { /* end of list */ }
3114 .init = net_init_dump,
3116 NET_COMMON_PARAMS_DESC,
3119 .type = QEMU_OPT_SIZE,
3120 .help = "per-packet size limit (64k default)",
3123 .type = QEMU_OPT_STRING,
3124 .help = "dump file path (default is qemu-vlan0.pcap)",
3126 { /* end of list */ }
3129 { /* end of list */ }
3132 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
3138 type = qemu_opt_get(opts, "type");
3140 qemu_error("No type specified for -net\n");
3145 if (strcmp(type, "tap") != 0 &&
3147 strcmp(type, "user") != 0 &&
3150 strcmp(type, "vde") != 0 &&
3152 strcmp(type, "socket") != 0) {
3153 qemu_error("The '%s' network backend type is not valid with -netdev\n",
3158 if (qemu_opt_get(opts, "vlan")) {
3159 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
3162 if (qemu_opt_get(opts, "name")) {
3163 qemu_error("The 'name' parameter is not valid with -netdev\n");
3166 if (!qemu_opts_id(opts)) {
3167 qemu_error("The id= parameter is required with -netdev\n");
3172 name = qemu_opts_id(opts);
3174 name = qemu_opt_get(opts, "name");
3177 for (i = 0; net_client_types[i].type != NULL; i++) {
3178 if (!strcmp(net_client_types[i].type, type)) {
3179 VLANState *vlan = NULL;
3181 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
3185 /* Do not add to a vlan if it's a -netdev or a nic with a
3186 * netdev= parameter. */
3188 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
3189 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
3192 if (net_client_types[i].init) {
3193 return net_client_types[i].init(opts, mon, name, vlan);
3200 qemu_error("Invalid -net type '%s'\n", type);
3204 void net_client_uninit(NICInfo *nd)
3207 nd->vlan->nb_guest_devs--;
3211 qemu_free(nd->model);
3212 qemu_free(nd->name);
3213 qemu_free(nd->devaddr);
3218 static int net_host_check_device(const char *device)
3221 const char *valid_param_list[] = { "tap", "socket", "dump"
3229 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
3230 if (!strncmp(valid_param_list[i], device,
3231 strlen(valid_param_list[i])))
3238 void net_host_device_add(Monitor *mon, const QDict *qdict)
3240 const char *device = qdict_get_str(qdict, "device");
3241 const char *opts_str = qdict_get_try_str(qdict, "opts");
3244 if (!net_host_check_device(device)) {
3245 monitor_printf(mon, "invalid host network device %s\n", device);
3249 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
3251 monitor_printf(mon, "parsing network options '%s' failed\n",
3252 opts_str ? opts_str : "");
3256 qemu_opt_set(opts, "type", device);
3258 if (net_client_init(mon, opts, 0) < 0) {
3259 monitor_printf(mon, "adding host network device %s failed\n", device);
3263 void net_host_device_remove(Monitor *mon, const QDict *qdict)
3265 VLANClientState *vc;
3266 int vlan_id = qdict_get_int(qdict, "vlan_id");
3267 const char *device = qdict_get_str(qdict, "device");
3269 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
3273 if (!net_host_check_device(vc->model)) {
3274 monitor_printf(mon, "invalid host network device %s\n", device);
3277 qemu_del_vlan_client(vc);
3280 void net_set_boot_mask(int net_boot_mask)
3284 /* Only the first four NICs may be bootable */
3285 net_boot_mask = net_boot_mask & 0xF;
3287 for (i = 0; i < nb_nics; i++) {
3288 if (net_boot_mask & (1 << i)) {
3289 nd_table[i].bootable = 1;
3290 net_boot_mask &= ~(1 << i);
3294 if (net_boot_mask) {
3295 fprintf(stderr, "Cannot boot from non-existent NIC\n");
3300 void do_info_network(Monitor *mon)
3304 QTAILQ_FOREACH(vlan, &vlans, next) {
3305 VLANClientState *vc;
3307 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
3309 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3310 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
3315 void do_set_link(Monitor *mon, const QDict *qdict)
3318 VLANClientState *vc = NULL;
3319 const char *name = qdict_get_str(qdict, "name");
3320 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
3322 QTAILQ_FOREACH(vlan, &vlans, next) {
3323 QTAILQ_FOREACH(vc, &vlan->clients, next) {
3324 if (strcmp(vc->name, name) == 0) {
3332 monitor_printf(mon, "could not find network device '%s'\n", name);
3336 if (strcmp(up_or_down, "up") == 0)
3338 else if (strcmp(up_or_down, "down") == 0)
3341 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
3342 "valid\n", up_or_down);
3344 if (vc->link_status_changed)
3345 vc->link_status_changed(vc);
3348 void net_cleanup(void)
3351 VLANClientState *vc, *next_vc;
3353 QTAILQ_FOREACH(vlan, &vlans, next) {
3354 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
3355 qemu_del_vlan_client(vc);
3359 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
3360 qemu_del_vlan_client(vc);
3364 static void net_check_clients(void)
3368 QTAILQ_FOREACH(vlan, &vlans, next) {
3369 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
3371 if (vlan->nb_guest_devs == 0)
3372 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
3373 if (vlan->nb_host_devs == 0)
3375 "Warning: vlan %d is not connected to host network\n",
3380 static int net_init_client(QemuOpts *opts, void *dummy)
3382 if (net_client_init(NULL, opts, 0) < 0)
3387 static int net_init_netdev(QemuOpts *opts, void *dummy)
3389 return net_client_init(NULL, opts, 1);
3392 int net_init_clients(void)
3394 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
3395 /* if no clients, we use a default config */
3396 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
3398 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
3402 QTAILQ_INIT(&vlans);
3403 QTAILQ_INIT(&non_vlan_clients);
3405 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
3408 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
3412 net_check_clients();
3417 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
3419 #if defined(CONFIG_SLIRP)
3420 /* handle legacy -net channel,port:chr */
3421 if (!strcmp(opts_list->name, "net") &&
3422 !strncmp(optarg, "channel,", strlen("channel,"))) {
3425 optarg += strlen("channel,");
3427 if (QTAILQ_EMPTY(&slirp_stacks)) {
3428 struct slirp_config_str *config;
3430 config = qemu_malloc(sizeof(*config));
3431 pstrcpy(config->str, sizeof(config->str), optarg);
3432 config->flags = SLIRP_CFG_LEGACY;
3433 config->next = slirp_configs;
3434 slirp_configs = config;
3437 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
3443 if (!qemu_opts_parse(opts_list, optarg, "type")) {