4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
36 #include <sys/times.h>
40 #include <sys/ioctl.h>
41 #include <sys/resource.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
46 #include <net/if_tap.h>
49 #include <linux/if_tun.h>
51 #include <arpa/inet.h>
54 #include <sys/select.h>
57 #if defined(__FreeBSD__) || defined(__DragonFly__)
62 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
63 #include <freebsd/stdlib.h>
68 #include <linux/rtc.h>
70 /* For the benefit of older linux systems which don't supply it,
71 we use a local copy of hpet.h. */
72 /* #include <linux/hpet.h> */
75 #include <linux/ppdev.h>
76 #include <linux/parport.h>
80 #include <sys/ethernet.h>
81 #include <sys/sockio.h>
82 #include <netinet/arp.h>
83 #include <netinet/in.h>
84 #include <netinet/in_systm.h>
85 #include <netinet/ip.h>
86 #include <netinet/ip_icmp.h> // must come after ip.h
87 #include <netinet/udp.h>
88 #include <netinet/tcp.h>
96 #if defined(__OpenBSD__)
100 #if defined(CONFIG_VDE)
101 #include <libvdeplug.h>
104 #include "qemu-common.h"
108 #include "qemu-timer.h"
109 #include "qemu-char.h"
110 #include "audio/audio.h"
111 #include "qemu_socket.h"
112 #include "qemu-log.h"
114 #include "slirp/libslirp.h"
117 static VLANState *first_vlan;
119 /***********************************************************/
120 /* network device redirectors */
122 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
123 static void hex_dump(FILE *f, const uint8_t *buf, int size)
127 for(i=0;i<size;i+=16) {
131 fprintf(f, "%08x ", i);
134 fprintf(f, " %02x", buf[i+j]);
141 if (c < ' ' || c > '~')
150 static int parse_macaddr(uint8_t *macaddr, const char *p)
157 offset = strtol(p, &last_char, 0);
158 if (0 == errno && '\0' == *last_char &&
159 offset >= 0 && offset <= 0xFFFFFF) {
160 macaddr[3] = (offset & 0xFF0000) >> 16;
161 macaddr[4] = (offset & 0xFF00) >> 8;
162 macaddr[5] = offset & 0xFF;
165 for(i = 0; i < 6; i++) {
166 macaddr[i] = strtol(p, (char **)&p, 16);
171 if (*p != ':' && *p != '-')
182 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
193 if (len > buf_size - 1)
202 int parse_host_src_port(struct sockaddr_in *haddr,
203 struct sockaddr_in *saddr,
204 const char *input_str)
206 char *str = strdup(input_str);
207 char *host_str = str;
209 const char *src_str2;
213 * Chop off any extra arguments at the end of the string which
214 * would start with a comma, then fill in the src port information
215 * if it was provided else use the "any address" and "any port".
217 if ((ptr = strchr(str,',')))
220 if ((src_str = strchr(input_str,'@'))) {
225 if (parse_host_port(haddr, host_str) < 0)
229 if (!src_str || *src_str == '\0')
232 if (parse_host_port(saddr, src_str2) < 0)
243 int parse_host_port(struct sockaddr_in *saddr, const char *str)
251 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
253 saddr->sin_family = AF_INET;
254 if (buf[0] == '\0') {
255 saddr->sin_addr.s_addr = 0;
257 if (qemu_isdigit(buf[0])) {
258 if (!inet_aton(buf, &saddr->sin_addr))
261 if ((he = gethostbyname(buf)) == NULL)
263 saddr->sin_addr = *(struct in_addr *)he->h_addr;
266 port = strtol(p, (char **)&r, 0);
269 saddr->sin_port = htons(port);
273 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
275 snprintf(vc->info_str, sizeof(vc->info_str),
276 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
278 macaddr[0], macaddr[1], macaddr[2],
279 macaddr[3], macaddr[4], macaddr[5]);
282 static char *assign_name(VLANClientState *vc1, const char *model)
288 for (vlan = first_vlan; vlan; vlan = vlan->next) {
291 for (vc = vlan->first_client; vc; vc = vc->next)
292 if (vc != vc1 && strcmp(vc->model, model) == 0)
296 snprintf(buf, sizeof(buf), "%s.%d", model, id);
301 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
304 NetCanReceive *can_receive,
306 NetReceiveIOV *receive_iov,
310 VLANClientState *vc, **pvc;
311 vc = qemu_mallocz(sizeof(VLANClientState));
312 vc->model = strdup(model);
314 vc->name = strdup(name);
316 vc->name = assign_name(vc, model);
317 vc->can_receive = can_receive;
318 vc->receive = receive;
319 vc->receive_iov = receive_iov;
320 vc->cleanup = cleanup;
325 pvc = &vlan->first_client;
332 void qemu_del_vlan_client(VLANClientState *vc)
334 VLANClientState **pvc = &vc->vlan->first_client;
350 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
352 VLANClientState **pvc = &vlan->first_client;
355 if ((*pvc)->opaque == opaque)
363 static VLANClientState *
364 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
365 const char *client_str)
370 vlan = qemu_find_vlan(vlan_id, 0);
372 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
376 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
377 if (!strcmp(vc->name, client_str)) {
382 monitor_printf(mon, "can't find device %s on VLAN %d\n",
383 client_str, vlan_id);
389 int qemu_can_send_packet(VLANClientState *sender)
391 VLANState *vlan = sender->vlan;
394 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
399 /* no can_receive() handler, they can always receive */
400 if (!vc->can_receive || vc->can_receive(vc)) {
408 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
413 sender->vlan->delivering = 1;
415 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
427 len = vc->receive(vc, buf, size);
429 ret = (ret >= 0) ? ret : len;
432 sender->vlan->delivering = 0;
437 void qemu_purge_queued_packets(VLANClientState *vc)
439 VLANPacket *packet, *next;
441 TAILQ_FOREACH_SAFE(packet, &vc->vlan->send_queue, entry, next) {
442 if (packet->sender == vc) {
443 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
449 void qemu_flush_queued_packets(VLANClientState *vc)
451 while (!TAILQ_EMPTY(&vc->vlan->send_queue)) {
455 packet = TAILQ_FIRST(&vc->vlan->send_queue);
456 TAILQ_REMOVE(&vc->vlan->send_queue, packet, entry);
458 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
459 if (ret == 0 && packet->sent_cb != NULL) {
460 TAILQ_INSERT_HEAD(&vc->vlan->send_queue, packet, entry);
465 packet->sent_cb(packet->sender, ret);
471 static void qemu_enqueue_packet(VLANClientState *sender,
472 const uint8_t *buf, int size,
473 NetPacketSent *sent_cb)
477 packet = qemu_malloc(sizeof(VLANPacket) + size);
478 packet->sender = sender;
480 packet->sent_cb = sent_cb;
481 memcpy(packet->data, buf, size);
483 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
486 ssize_t qemu_send_packet_async(VLANClientState *sender,
487 const uint8_t *buf, int size,
488 NetPacketSent *sent_cb)
492 if (sender->link_down) {
497 printf("vlan %d send:\n", sender->vlan->id);
498 hex_dump(stdout, buf, size);
501 if (sender->vlan->delivering) {
502 qemu_enqueue_packet(sender, buf, size, NULL);
506 ret = qemu_deliver_packet(sender, buf, size);
507 if (ret == 0 && sent_cb != NULL) {
508 qemu_enqueue_packet(sender, buf, size, sent_cb);
512 qemu_flush_queued_packets(sender);
517 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
519 qemu_send_packet_async(vc, buf, size, NULL);
522 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
525 uint8_t buffer[4096];
529 for (i = 0; i < iovcnt; i++) {
532 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
533 memcpy(buffer + offset, iov[i].iov_base, len);
537 return vc->receive(vc, buffer, offset);
540 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
545 for (i = 0; i < iovcnt; i++)
546 offset += iov[i].iov_len;
550 static int qemu_deliver_packet_iov(VLANClientState *sender,
551 const struct iovec *iov, int iovcnt)
556 sender->vlan->delivering = 1;
558 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
566 ret = calc_iov_length(iov, iovcnt);
570 if (vc->receive_iov) {
571 len = vc->receive_iov(vc, iov, iovcnt);
573 len = vc_sendv_compat(vc, iov, iovcnt);
576 ret = (ret >= 0) ? ret : len;
579 sender->vlan->delivering = 0;
584 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
585 const struct iovec *iov, int iovcnt,
586 NetPacketSent *sent_cb)
592 max_len = calc_iov_length(iov, iovcnt);
594 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
595 packet->sender = sender;
596 packet->sent_cb = sent_cb;
599 for (i = 0; i < iovcnt; i++) {
600 size_t len = iov[i].iov_len;
602 memcpy(packet->data + packet->size, iov[i].iov_base, len);
606 TAILQ_INSERT_TAIL(&sender->vlan->send_queue, packet, entry);
611 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
612 const struct iovec *iov, int iovcnt,
613 NetPacketSent *sent_cb)
617 if (sender->link_down) {
618 return calc_iov_length(iov, iovcnt);
621 if (sender->vlan->delivering) {
622 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
625 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
626 if (ret == 0 && sent_cb != NULL) {
627 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
631 qemu_flush_queued_packets(sender);
637 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
639 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
642 static void config_error(Monitor *mon, const char *fmt, ...)
648 monitor_vprintf(mon, fmt, ap);
650 fprintf(stderr, "qemu: ");
651 vfprintf(stderr, fmt, ap);
657 #if defined(CONFIG_SLIRP)
659 /* slirp network adapter */
661 #define SLIRP_CFG_HOSTFWD 1
662 #define SLIRP_CFG_LEGACY 2
664 struct slirp_config_str {
665 struct slirp_config_str *next;
671 typedef struct SlirpState {
672 TAILQ_ENTRY(SlirpState) entry;
680 static struct slirp_config_str *slirp_configs;
681 const char *legacy_tftp_prefix;
682 const char *legacy_bootp_filename;
683 static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
684 TAILQ_HEAD_INITIALIZER(slirp_stacks);
686 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
688 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
692 static const char *legacy_smb_export;
694 static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
695 struct in_addr vserver_addr);
696 static void slirp_smb_cleanup(SlirpState *s);
698 static inline void slirp_smb_cleanup(SlirpState *s) { }
701 int slirp_can_output(void *opaque)
703 SlirpState *s = opaque;
705 return qemu_can_send_packet(s->vc);
708 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
710 SlirpState *s = opaque;
713 printf("slirp output:\n");
714 hex_dump(stdout, pkt, pkt_len);
716 qemu_send_packet(s->vc, pkt, pkt_len);
719 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
721 SlirpState *s = vc->opaque;
724 printf("slirp input:\n");
725 hex_dump(stdout, buf, size);
727 slirp_input(s->slirp, buf, size);
731 static void net_slirp_cleanup(VLANClientState *vc)
733 SlirpState *s = vc->opaque;
735 slirp_cleanup(s->slirp);
736 slirp_smb_cleanup(s);
737 TAILQ_REMOVE(&slirp_stacks, s, entry);
741 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
742 const char *name, int restricted,
743 const char *vnetwork, const char *vhost,
744 const char *vhostname, const char *tftp_export,
745 const char *bootfile, const char *vdhcp_start,
746 const char *vnameserver, const char *smb_export,
747 const char *vsmbserver)
749 /* default settings according to historic slirp */
750 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
751 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
752 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
753 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
754 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
756 struct in_addr smbsrv = { .s_addr = 0 };
765 tftp_export = legacy_tftp_prefix;
768 bootfile = legacy_bootp_filename;
772 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
773 if (!inet_aton(vnetwork, &net)) {
776 addr = ntohl(net.s_addr);
777 if (!(addr & 0x80000000)) {
778 mask.s_addr = htonl(0xff000000); /* class A */
779 } else if ((addr & 0xfff00000) == 0xac100000) {
780 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
781 } else if ((addr & 0xc0000000) == 0x80000000) {
782 mask.s_addr = htonl(0xffff0000); /* class B */
783 } else if ((addr & 0xffff0000) == 0xc0a80000) {
784 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
785 } else if ((addr & 0xffff0000) == 0xc6120000) {
786 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
787 } else if ((addr & 0xe0000000) == 0xe0000000) {
788 mask.s_addr = htonl(0xffffff00); /* class C */
790 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
793 if (!inet_aton(buf, &net)) {
796 shift = strtol(vnetwork, &end, 10);
798 if (!inet_aton(vnetwork, &mask)) {
801 } else if (shift < 4 || shift > 32) {
804 mask.s_addr = htonl(0xffffffff << (32 - shift));
807 net.s_addr &= mask.s_addr;
808 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
809 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
810 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
813 if (vhost && !inet_aton(vhost, &host)) {
816 if ((host.s_addr & mask.s_addr) != net.s_addr) {
820 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
823 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
824 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
828 if (vnameserver && !inet_aton(vnameserver, &dns)) {
831 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
832 dns.s_addr == host.s_addr) {
837 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
842 s = qemu_mallocz(sizeof(SlirpState));
843 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
844 tftp_export, bootfile, dhcp, dns, s);
845 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
847 while (slirp_configs) {
848 struct slirp_config_str *config = slirp_configs;
850 if (config->flags & SLIRP_CFG_HOSTFWD) {
851 slirp_hostfwd(s, mon, config->str,
852 config->flags & SLIRP_CFG_LEGACY);
854 slirp_guestfwd(s, mon, config->str,
855 config->flags & SLIRP_CFG_LEGACY);
857 slirp_configs = config->next;
862 smb_export = legacy_smb_export;
865 slirp_smb(s, mon, smb_export, smbsrv);
869 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
870 net_slirp_cleanup, s);
871 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
872 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
876 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
882 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
886 if (strcmp(vc->model, "user")) {
887 monitor_printf(mon, "invalid device specified\n");
892 if (TAILQ_EMPTY(&slirp_stacks)) {
893 monitor_printf(mon, "user mode network stack not in use\n");
896 return TAILQ_FIRST(&slirp_stacks);
900 void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
901 const char *arg2, const char *arg3)
903 struct in_addr host_addr = { .s_addr = INADDR_ANY };
906 const char *src_str, *p;
912 s = slirp_lookup(mon, arg1, arg2);
915 s = slirp_lookup(mon, NULL, NULL);
922 if (!src_str || !src_str[0])
926 get_str_sep(buf, sizeof(buf), &p, ':');
928 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
930 } else if (!strcmp(buf, "udp")) {
936 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
939 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
945 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
946 host_addr, host_port);
948 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
949 err ? "removed" : "not found");
953 monitor_printf(mon, "invalid format\n");
956 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
959 struct in_addr host_addr = { .s_addr = INADDR_ANY };
960 struct in_addr guest_addr = { .s_addr = 0 };
961 int host_port, guest_port;
968 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
971 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
973 } else if (!strcmp(buf, "udp")) {
979 if (!legacy_format) {
980 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
983 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
988 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
991 host_port = strtol(buf, &end, 0);
992 if (*end != '\0' || host_port < 1 || host_port > 65535) {
996 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
999 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1003 guest_port = strtol(p, &end, 0);
1004 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1008 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1010 config_error(mon, "could not set up host forwarding rule '%s'\n",
1016 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
1019 void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
1020 const char *arg2, const char *arg3)
1022 const char *redir_str;
1026 s = slirp_lookup(mon, arg1, arg2);
1029 s = slirp_lookup(mon, NULL, NULL);
1033 slirp_hostfwd(s, mon, redir_str, 0);
1038 void net_slirp_redir(const char *redir_str)
1040 struct slirp_config_str *config;
1042 if (TAILQ_EMPTY(&slirp_stacks)) {
1043 config = qemu_malloc(sizeof(*config));
1044 pstrcpy(config->str, sizeof(config->str), redir_str);
1045 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1046 config->next = slirp_configs;
1047 slirp_configs = config;
1051 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
1056 /* automatic user mode samba server configuration */
1057 static void slirp_smb_cleanup(SlirpState *s)
1061 if (s->smb_dir[0] != '\0') {
1062 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1064 s->smb_dir[0] = '\0';
1068 static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
1069 struct in_addr vserver_addr)
1071 static int instance;
1073 char smb_cmdline[128];
1076 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1077 (long)getpid(), instance++);
1078 if (mkdir(s->smb_dir, 0700) < 0) {
1079 config_error(mon, "could not create samba server dir '%s'\n",
1083 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1085 f = fopen(smb_conf, "w");
1087 slirp_smb_cleanup(s);
1088 config_error(mon, "could not create samba server "
1089 "configuration file '%s'\n", smb_conf);
1096 "socket address=127.0.0.1\n"
1097 "pid directory=%s\n"
1098 "lock directory=%s\n"
1099 "log file=%s/log.smbd\n"
1100 "smb passwd file=%s/smbpasswd\n"
1101 "security = share\n"
1115 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1116 SMBD_COMMAND, smb_conf);
1118 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1119 slirp_smb_cleanup(s);
1120 config_error(mon, "conflicting/invalid smbserver address\n");
1124 /* automatic user mode samba server configuration (legacy interface) */
1125 void net_slirp_smb(const char *exported_dir)
1127 struct in_addr vserver_addr = { .s_addr = 0 };
1129 if (legacy_smb_export) {
1130 fprintf(stderr, "-smb given twice\n");
1133 legacy_smb_export = exported_dir;
1134 if (!TAILQ_EMPTY(&slirp_stacks)) {
1135 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1140 #endif /* !defined(_WIN32) */
1143 CharDriverState *hd;
1144 struct in_addr server;
1149 static int guestfwd_can_read(void *opaque)
1151 struct GuestFwd *fwd = opaque;
1152 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1155 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1157 struct GuestFwd *fwd = opaque;
1158 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1161 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1164 struct in_addr server = { .s_addr = 0 };
1165 struct GuestFwd *fwd;
1172 if (legacy_format) {
1173 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1177 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1180 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1183 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1186 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1189 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1193 port = strtol(buf, &end, 10);
1194 if (*end != '\0' || port < 1 || port > 65535) {
1198 fwd = qemu_malloc(sizeof(struct GuestFwd));
1199 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1200 fwd->hd = qemu_chr_open(buf, p, NULL);
1202 config_error(mon, "could not open guest forwarding device '%s'\n",
1208 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1209 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1210 "rule '%s'\n", config_str);
1214 fwd->server = server;
1216 fwd->slirp = s->slirp;
1218 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1223 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1226 void do_info_usernet(Monitor *mon)
1230 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1231 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1232 slirp_connection_info(s->slirp, mon);
1236 #endif /* CONFIG_SLIRP */
1238 #if !defined(_WIN32)
1240 typedef struct TAPState {
1241 VLANClientState *vc;
1243 char down_script[1024];
1244 char down_script_arg[128];
1246 unsigned int read_poll : 1;
1247 unsigned int write_poll : 1;
1250 static int launch_script(const char *setup_script, const char *ifname, int fd);
1252 static int tap_can_send(void *opaque);
1253 static void tap_send(void *opaque);
1254 static void tap_writable(void *opaque);
1256 static void tap_update_fd_handler(TAPState *s)
1258 qemu_set_fd_handler2(s->fd,
1259 s->read_poll ? tap_can_send : NULL,
1260 s->read_poll ? tap_send : NULL,
1261 s->write_poll ? tap_writable : NULL,
1265 static void tap_read_poll(TAPState *s, int enable)
1267 s->read_poll = !!enable;
1268 tap_update_fd_handler(s);
1271 static void tap_write_poll(TAPState *s, int enable)
1273 s->write_poll = !!enable;
1274 tap_update_fd_handler(s);
1277 static void tap_writable(void *opaque)
1279 TAPState *s = opaque;
1281 tap_write_poll(s, 0);
1283 qemu_flush_queued_packets(s->vc);
1286 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1289 TAPState *s = vc->opaque;
1293 len = writev(s->fd, iov, iovcnt);
1294 } while (len == -1 && errno == EINTR);
1296 if (len == -1 && errno == EAGAIN) {
1297 tap_write_poll(s, 1);
1304 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1306 TAPState *s = vc->opaque;
1310 len = write(s->fd, buf, size);
1311 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1316 static int tap_can_send(void *opaque)
1318 TAPState *s = opaque;
1320 return qemu_can_send_packet(s->vc);
1324 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1329 sbuf.maxlen = maxlen;
1330 sbuf.buf = (char *)buf;
1332 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1335 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1337 return read(tapfd, buf, maxlen);
1341 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1343 TAPState *s = vc->opaque;
1344 tap_read_poll(s, 1);
1347 static void tap_send(void *opaque)
1349 TAPState *s = opaque;
1353 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1358 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1360 tap_read_poll(s, 0);
1366 /* sndbuf should be set to a value lower than the tx queue
1367 * capacity of any destination network interface.
1368 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1369 * a good default, given a 1500 byte MTU.
1371 #define TAP_DEFAULT_SNDBUF 1024*1024
1373 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1375 int sndbuf = TAP_DEFAULT_SNDBUF;
1378 sndbuf = atoi(sndbuf_str);
1385 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
1386 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1391 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1394 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1397 #endif /* TUNSETSNDBUF */
1399 static void tap_cleanup(VLANClientState *vc)
1401 TAPState *s = vc->opaque;
1403 qemu_purge_queued_packets(vc);
1405 if (s->down_script[0])
1406 launch_script(s->down_script, s->down_script_arg, s->fd);
1408 tap_read_poll(s, 0);
1409 tap_write_poll(s, 0);
1416 static TAPState *net_tap_fd_init(VLANState *vlan,
1423 s = qemu_mallocz(sizeof(TAPState));
1425 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1426 tap_receive_iov, tap_cleanup, s);
1427 tap_read_poll(s, 1);
1428 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1432 #if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
1433 static int tap_open(char *ifname, int ifname_size)
1439 TFR(fd = open("/dev/tap", O_RDWR));
1441 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1446 dev = devname(s.st_rdev, S_IFCHR);
1447 pstrcpy(ifname, ifname_size, dev);
1449 fcntl(fd, F_SETFL, O_NONBLOCK);
1452 #elif defined(__sun__)
1453 #define TUNNEWPPA (('T'<<16) | 0x0001)
1455 * Allocate TAP device, returns opened fd.
1456 * Stores dev name in the first arg(must be large enough).
1458 static int tap_alloc(char *dev, size_t dev_size)
1460 int tap_fd, if_fd, ppa = -1;
1461 static int ip_fd = 0;
1464 static int arp_fd = 0;
1465 int ip_muxid, arp_muxid;
1466 struct strioctl strioc_if, strioc_ppa;
1467 int link_type = I_PLINK;;
1469 char actual_name[32] = "";
1471 memset(&ifr, 0x0, sizeof(ifr));
1475 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1479 /* Check if IP device was opened */
1483 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1485 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1489 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1491 syslog(LOG_ERR, "Can't open /dev/tap");
1495 /* Assign a new PPA and get its unit number. */
1496 strioc_ppa.ic_cmd = TUNNEWPPA;
1497 strioc_ppa.ic_timout = 0;
1498 strioc_ppa.ic_len = sizeof(ppa);
1499 strioc_ppa.ic_dp = (char *)&ppa;
1500 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1501 syslog (LOG_ERR, "Can't assign new interface");
1503 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1505 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1508 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1509 syslog(LOG_ERR, "Can't push IP module");
1513 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1514 syslog(LOG_ERR, "Can't get flags\n");
1516 snprintf (actual_name, 32, "tap%d", ppa);
1517 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1520 /* Assign ppa according to the unit number returned by tun device */
1522 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1523 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1524 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1525 syslog (LOG_ERR, "Can't get flags\n");
1526 /* Push arp module to if_fd */
1527 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1528 syslog (LOG_ERR, "Can't push ARP module (2)");
1530 /* Push arp module to ip_fd */
1531 if (ioctl (ip_fd, I_POP, NULL) < 0)
1532 syslog (LOG_ERR, "I_POP failed\n");
1533 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1534 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1536 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1538 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1540 /* Set ifname to arp */
1541 strioc_if.ic_cmd = SIOCSLIFNAME;
1542 strioc_if.ic_timout = 0;
1543 strioc_if.ic_len = sizeof(ifr);
1544 strioc_if.ic_dp = (char *)𝔦
1545 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1546 syslog (LOG_ERR, "Can't set ifname to arp\n");
1549 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1550 syslog(LOG_ERR, "Can't link TAP device to IP");
1554 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1555 syslog (LOG_ERR, "Can't link TAP device to ARP");
1559 memset(&ifr, 0x0, sizeof(ifr));
1560 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1561 ifr.lifr_ip_muxid = ip_muxid;
1562 ifr.lifr_arp_muxid = arp_muxid;
1564 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1566 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1567 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1568 syslog (LOG_ERR, "Can't set multiplexor id");
1571 snprintf(dev, dev_size, "tap%d", ppa);
1575 static int tap_open(char *ifname, int ifname_size)
1579 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1580 fprintf(stderr, "Cannot allocate TAP device\n");
1583 pstrcpy(ifname, ifname_size, dev);
1584 fcntl(fd, F_SETFL, O_NONBLOCK);
1587 #elif defined (_AIX)
1588 static int tap_open(char *ifname, int ifname_size)
1590 fprintf (stderr, "no tap on AIX\n");
1594 static int tap_open(char *ifname, int ifname_size)
1599 TFR(fd = open("/dev/net/tun", O_RDWR));
1601 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1604 memset(&ifr, 0, sizeof(ifr));
1605 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1606 if (ifname[0] != '\0')
1607 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1609 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1610 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1612 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1616 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1617 fcntl(fd, F_SETFL, O_NONBLOCK);
1622 static int launch_script(const char *setup_script, const char *ifname, int fd)
1624 sigset_t oldmask, mask;
1630 sigaddset(&mask, SIGCHLD);
1631 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1633 /* try to launch network script */
1636 int open_max = sysconf(_SC_OPEN_MAX), i;
1638 for (i = 0; i < open_max; i++) {
1639 if (i != STDIN_FILENO &&
1640 i != STDOUT_FILENO &&
1641 i != STDERR_FILENO &&
1647 *parg++ = (char *)setup_script;
1648 *parg++ = (char *)ifname;
1650 execv(setup_script, args);
1652 } else if (pid > 0) {
1653 while (waitpid(pid, &status, 0) != pid) {
1656 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1658 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1662 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1666 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1667 const char *name, const char *ifname1,
1668 const char *setup_script, const char *down_script)
1674 if (ifname1 != NULL)
1675 pstrcpy(ifname, sizeof(ifname), ifname1);
1678 TFR(fd = tap_open(ifname, sizeof(ifname)));
1682 if (!setup_script || !strcmp(setup_script, "no"))
1684 if (setup_script[0] != '\0' &&
1685 launch_script(setup_script, ifname, fd)) {
1688 s = net_tap_fd_init(vlan, model, name, fd);
1689 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1690 "ifname=%s,script=%s,downscript=%s",
1691 ifname, setup_script, down_script);
1692 if (down_script && strcmp(down_script, "no")) {
1693 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1694 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1699 #endif /* !_WIN32 */
1701 #if defined(CONFIG_VDE)
1702 typedef struct VDEState {
1703 VLANClientState *vc;
1707 static void vde_to_qemu(void *opaque)
1709 VDEState *s = opaque;
1713 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1715 qemu_send_packet(s->vc, buf, size);
1719 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1721 VDEState *s = vc->opaque;
1725 ret = vde_send(s->vde, (const char *)buf, size, 0);
1726 } while (ret < 0 && errno == EINTR);
1731 static void vde_cleanup(VLANClientState *vc)
1733 VDEState *s = vc->opaque;
1734 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1739 static int net_vde_init(VLANState *vlan, const char *model,
1740 const char *name, const char *sock,
1741 int port, const char *group, int mode)
1744 char *init_group = strlen(group) ? (char *)group : NULL;
1745 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1747 struct vde_open_args args = {
1749 .group = init_group,
1753 s = qemu_mallocz(sizeof(VDEState));
1754 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1759 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1760 NULL, vde_cleanup, s);
1761 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1762 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1763 sock, vde_datafd(s->vde));
1768 /* network connection */
1769 typedef struct NetSocketState {
1770 VLANClientState *vc;
1772 int state; /* 0 = getting length, 1 = getting data */
1774 unsigned int packet_len;
1776 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1779 typedef struct NetSocketListenState {
1784 } NetSocketListenState;
1786 /* XXX: we consider we can send the whole packet without blocking */
1787 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1789 NetSocketState *s = vc->opaque;
1793 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1794 return send_all(s->fd, buf, size);
1797 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1799 NetSocketState *s = vc->opaque;
1801 return sendto(s->fd, (const void *)buf, size, 0,
1802 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1805 static void net_socket_send(void *opaque)
1807 NetSocketState *s = opaque;
1813 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1815 err = socket_error();
1816 if (err != EWOULDBLOCK)
1818 } else if (size == 0) {
1819 /* end of connection */
1821 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1827 /* reassemble a packet from the network */
1833 memcpy(s->buf + s->index, buf, l);
1837 if (s->index == 4) {
1839 s->packet_len = ntohl(*(uint32_t *)s->buf);
1845 l = s->packet_len - s->index;
1848 if (s->index + l <= sizeof(s->buf)) {
1849 memcpy(s->buf + s->index, buf, l);
1851 fprintf(stderr, "serious error: oversized packet received,"
1852 "connection terminated.\n");
1860 if (s->index >= s->packet_len) {
1861 qemu_send_packet(s->vc, s->buf, s->packet_len);
1870 static void net_socket_send_dgram(void *opaque)
1872 NetSocketState *s = opaque;
1875 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1879 /* end of connection */
1880 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1883 qemu_send_packet(s->vc, s->buf, size);
1886 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1891 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1892 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1893 inet_ntoa(mcastaddr->sin_addr),
1894 (int)ntohl(mcastaddr->sin_addr.s_addr));
1898 fd = socket(PF_INET, SOCK_DGRAM, 0);
1900 perror("socket(PF_INET, SOCK_DGRAM)");
1905 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1906 (const char *)&val, sizeof(val));
1908 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1912 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1918 /* Add host to multicast group */
1919 imr.imr_multiaddr = mcastaddr->sin_addr;
1920 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1922 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1923 (const char *)&imr, sizeof(struct ip_mreq));
1925 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1929 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1931 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1932 (const char *)&val, sizeof(val));
1934 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1938 socket_set_nonblock(fd);
1946 static void net_socket_cleanup(VLANClientState *vc)
1948 NetSocketState *s = vc->opaque;
1949 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1954 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1957 int fd, int is_connected)
1959 struct sockaddr_in saddr;
1961 socklen_t saddr_len;
1964 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1965 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1966 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1970 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1972 if (saddr.sin_addr.s_addr==0) {
1973 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1977 /* clone dgram socket */
1978 newfd = net_socket_mcast_create(&saddr);
1980 /* error already reported by net_socket_mcast_create() */
1984 /* clone newfd to fd, close newfd */
1989 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1990 fd, strerror(errno));
1995 s = qemu_mallocz(sizeof(NetSocketState));
1998 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1999 NULL, net_socket_cleanup, s);
2000 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2002 /* mcast: save bound address as dst */
2003 if (is_connected) s->dgram_dst=saddr;
2005 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2006 "socket: fd=%d (%s mcast=%s:%d)",
2007 fd, is_connected? "cloned" : "",
2008 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2012 static void net_socket_connect(void *opaque)
2014 NetSocketState *s = opaque;
2015 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2018 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2021 int fd, int is_connected)
2024 s = qemu_mallocz(sizeof(NetSocketState));
2026 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
2027 NULL, net_socket_cleanup, s);
2028 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2029 "socket: fd=%d", fd);
2031 net_socket_connect(s);
2033 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2038 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2039 const char *model, const char *name,
2040 int fd, int is_connected)
2042 int so_type=-1, optlen=sizeof(so_type);
2044 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2045 (socklen_t *)&optlen)< 0) {
2046 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2051 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2053 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2055 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2056 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2057 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2062 static void net_socket_accept(void *opaque)
2064 NetSocketListenState *s = opaque;
2066 struct sockaddr_in saddr;
2071 len = sizeof(saddr);
2072 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2073 if (fd < 0 && errno != EINTR) {
2075 } else if (fd >= 0) {
2079 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2083 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2084 "socket: connection from %s:%d",
2085 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2089 static int net_socket_listen_init(VLANState *vlan,
2092 const char *host_str)
2094 NetSocketListenState *s;
2096 struct sockaddr_in saddr;
2098 if (parse_host_port(&saddr, host_str) < 0)
2101 s = qemu_mallocz(sizeof(NetSocketListenState));
2103 fd = socket(PF_INET, SOCK_STREAM, 0);
2108 socket_set_nonblock(fd);
2110 /* allow fast reuse */
2112 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2114 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2119 ret = listen(fd, 0);
2125 s->model = strdup(model);
2126 s->name = name ? strdup(name) : NULL;
2128 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2132 static int net_socket_connect_init(VLANState *vlan,
2135 const char *host_str)
2138 int fd, connected, ret, err;
2139 struct sockaddr_in saddr;
2141 if (parse_host_port(&saddr, host_str) < 0)
2144 fd = socket(PF_INET, SOCK_STREAM, 0);
2149 socket_set_nonblock(fd);
2153 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2155 err = socket_error();
2156 if (err == EINTR || err == EWOULDBLOCK) {
2157 } else if (err == EINPROGRESS) {
2160 } else if (err == WSAEALREADY) {
2173 s = net_socket_fd_init(vlan, model, name, fd, connected);
2176 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2177 "socket: connect to %s:%d",
2178 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2182 static int net_socket_mcast_init(VLANState *vlan,
2185 const char *host_str)
2189 struct sockaddr_in saddr;
2191 if (parse_host_port(&saddr, host_str) < 0)
2195 fd = net_socket_mcast_create(&saddr);
2199 s = net_socket_fd_init(vlan, model, name, fd, 0);
2203 s->dgram_dst = saddr;
2205 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2206 "socket: mcast=%s:%d",
2207 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2212 typedef struct DumpState {
2213 VLANClientState *pcap_vc;
2218 #define PCAP_MAGIC 0xa1b2c3d4
2220 struct pcap_file_hdr {
2222 uint16_t version_major;
2223 uint16_t version_minor;
2230 struct pcap_sf_pkthdr {
2239 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2241 DumpState *s = vc->opaque;
2242 struct pcap_sf_pkthdr hdr;
2246 /* Early return in case of previous error. */
2251 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2252 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2254 hdr.ts.tv_sec = ts / 1000000;
2255 hdr.ts.tv_usec = ts % 1000000;
2256 hdr.caplen = caplen;
2258 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2259 write(s->fd, buf, caplen) != caplen) {
2260 qemu_log("-net dump write error - stop dump\n");
2268 static void net_dump_cleanup(VLANClientState *vc)
2270 DumpState *s = vc->opaque;
2276 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2277 const char *name, const char *filename, int len)
2279 struct pcap_file_hdr hdr;
2282 s = qemu_malloc(sizeof(DumpState));
2284 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2286 config_error(mon, "-net dump: can't open %s\n", filename);
2290 s->pcap_caplen = len;
2292 hdr.magic = PCAP_MAGIC;
2293 hdr.version_major = 2;
2294 hdr.version_minor = 4;
2297 hdr.snaplen = s->pcap_caplen;
2300 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2301 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2307 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2308 net_dump_cleanup, s);
2309 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2310 "dump to %s (len=%d)", filename, len);
2314 /* find or alloc a new VLAN */
2315 VLANState *qemu_find_vlan(int id, int allocate)
2317 VLANState **pvlan, *vlan;
2318 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2325 vlan = qemu_mallocz(sizeof(VLANState));
2327 TAILQ_INIT(&vlan->send_queue);
2329 pvlan = &first_vlan;
2330 while (*pvlan != NULL)
2331 pvlan = &(*pvlan)->next;
2336 static int nic_get_free_idx(void)
2340 for (index = 0; index < MAX_NICS; index++)
2341 if (!nd_table[index].used)
2346 void qemu_check_nic_model(NICInfo *nd, const char *model)
2348 const char *models[2];
2353 qemu_check_nic_model_list(nd, models, model);
2356 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2357 const char *default_model)
2359 int i, exit_status = 0;
2362 nd->model = strdup(default_model);
2364 if (strcmp(nd->model, "?") != 0) {
2365 for (i = 0 ; models[i]; i++)
2366 if (strcmp(nd->model, models[i]) == 0)
2369 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2373 fprintf(stderr, "qemu: Supported NIC models: ");
2374 for (i = 0 ; models[i]; i++)
2375 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2380 static int net_handle_fd_param(Monitor *mon, const char *param)
2382 if (!qemu_isdigit(param[0])) {
2385 fd = monitor_get_fd(mon, param);
2387 config_error(mon, "No file descriptor named %s found", param);
2393 return strtol(param, NULL, 0);
2397 int net_client_init(Monitor *mon, const char *device, const char *p)
2405 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2406 vlan_id = strtol(buf, NULL, 0);
2408 vlan = qemu_find_vlan(vlan_id, 1);
2410 if (get_param_value(buf, sizeof(buf), "name", p)) {
2411 name = qemu_strdup(buf);
2413 if (!strcmp(device, "nic")) {
2414 static const char * const nic_params[] = {
2415 "vlan", "name", "macaddr", "model", "addr", "id", "vectors", NULL
2419 int idx = nic_get_free_idx();
2421 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2422 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2426 if (idx == -1 || nb_nics >= MAX_NICS) {
2427 config_error(mon, "Too Many NICs\n");
2431 nd = &nd_table[idx];
2432 macaddr = nd->macaddr;
2438 macaddr[5] = 0x56 + idx;
2440 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2441 if (parse_macaddr(macaddr, buf) < 0) {
2442 config_error(mon, "invalid syntax for ethernet address\n");
2447 if (get_param_value(buf, sizeof(buf), "model", p)) {
2448 nd->model = strdup(buf);
2450 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2451 nd->devaddr = strdup(buf);
2453 if (get_param_value(buf, sizeof(buf), "id", p)) {
2454 nd->id = strdup(buf);
2456 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2457 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2459 long vectors = strtol(buf, &endptr, 0);
2461 config_error(mon, "invalid syntax for # of vectors\n");
2465 if (vectors < 0 || vectors > 0x7ffffff) {
2466 config_error(mon, "invalid # of vectors\n");
2470 nd->nvectors = vectors;
2477 vlan->nb_guest_devs++;
2480 if (!strcmp(device, "none")) {
2482 config_error(mon, "'none' takes no parameters\n");
2486 /* does nothing. It is needed to signal that no network cards
2491 if (!strcmp(device, "user")) {
2492 static const char * const slirp_params[] = {
2493 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2494 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2495 "hostfwd", "guestfwd", NULL
2497 struct slirp_config_str *config;
2501 char *vhostname = NULL;
2502 char *tftp_export = NULL;
2503 char *bootfile = NULL;
2504 char *vdhcp_start = NULL;
2505 char *vnamesrv = NULL;
2506 char *smb_export = NULL;
2507 char *vsmbsrv = NULL;
2510 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2511 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2515 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2516 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
2517 /* emulate legacy parameter */
2518 vnet = qemu_malloc(vnet_buflen);
2519 pstrcpy(vnet, vnet_buflen, buf);
2520 pstrcat(vnet, vnet_buflen, "/24");
2522 if (get_param_value(buf, sizeof(buf), "net", p)) {
2523 vnet = qemu_strdup(buf);
2525 if (get_param_value(buf, sizeof(buf), "host", p)) {
2526 vhost = qemu_strdup(buf);
2528 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2529 vhostname = qemu_strdup(buf);
2531 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2532 restricted = (buf[0] == 'y') ? 1 : 0;
2534 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2535 vdhcp_start = qemu_strdup(buf);
2537 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2538 vnamesrv = qemu_strdup(buf);
2540 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2541 tftp_export = qemu_strdup(buf);
2543 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2544 bootfile = qemu_strdup(buf);
2546 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2547 smb_export = qemu_strdup(buf);
2548 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2549 vsmbsrv = qemu_strdup(buf);
2554 config = qemu_malloc(sizeof(*config));
2555 if (!get_next_param_value(config->str, sizeof(config->str),
2559 config->flags = SLIRP_CFG_HOSTFWD;
2560 config->next = slirp_configs;
2561 slirp_configs = config;
2566 config = qemu_malloc(sizeof(*config));
2567 if (!get_next_param_value(config->str, sizeof(config->str),
2572 config->next = slirp_configs;
2573 slirp_configs = config;
2577 vlan->nb_host_devs++;
2578 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2579 vhostname, tftp_export, bootfile, vdhcp_start,
2580 vnamesrv, smb_export, vsmbsrv);
2583 qemu_free(vhostname);
2584 qemu_free(tftp_export);
2585 qemu_free(bootfile);
2586 qemu_free(vdhcp_start);
2587 qemu_free(vnamesrv);
2588 qemu_free(smb_export);
2590 } else if (!strcmp(device, "channel")) {
2591 if (TAILQ_EMPTY(&slirp_stacks)) {
2592 struct slirp_config_str *config;
2594 config = qemu_malloc(sizeof(*config));
2595 pstrcpy(config->str, sizeof(config->str), p);
2596 config->flags = SLIRP_CFG_LEGACY;
2597 config->next = slirp_configs;
2598 slirp_configs = config;
2600 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
2606 if (!strcmp(device, "tap")) {
2607 static const char * const tap_params[] = {
2608 "vlan", "name", "ifname", NULL
2612 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2613 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2617 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2618 config_error(mon, "tap: no interface name\n");
2622 vlan->nb_host_devs++;
2623 ret = tap_win32_init(vlan, device, name, ifname);
2625 #elif defined (_AIX)
2627 if (!strcmp(device, "tap")) {
2628 char ifname[64], chkbuf[64];
2629 char setup_script[1024], down_script[1024];
2632 vlan->nb_host_devs++;
2633 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2634 static const char * const fd_params[] = {
2635 "vlan", "name", "fd", "sndbuf", NULL
2638 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2639 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2642 fd = net_handle_fd_param(mon, buf);
2646 fcntl(fd, F_SETFL, O_NONBLOCK);
2647 s = net_tap_fd_init(vlan, device, name, fd);
2652 static const char * const tap_params[] = {
2653 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2655 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2656 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2660 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2663 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2664 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2666 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2667 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2669 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2672 const char *sndbuf_str = NULL;
2673 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2676 tap_set_sndbuf(s, sndbuf_str, mon);
2683 if (!strcmp(device, "socket")) {
2685 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2686 static const char * const fd_params[] = {
2687 "vlan", "name", "fd", NULL
2691 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2692 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2695 fd = net_handle_fd_param(mon, buf);
2699 if (!net_socket_fd_init(vlan, device, name, fd, 1)) {
2704 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2705 static const char * const listen_params[] = {
2706 "vlan", "name", "listen", NULL
2708 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2709 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2713 ret = net_socket_listen_init(vlan, device, name, buf);
2714 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2715 static const char * const connect_params[] = {
2716 "vlan", "name", "connect", NULL
2718 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2719 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2723 ret = net_socket_connect_init(vlan, device, name, buf);
2724 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2725 static const char * const mcast_params[] = {
2726 "vlan", "name", "mcast", NULL
2728 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2729 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2733 ret = net_socket_mcast_init(vlan, device, name, buf);
2735 config_error(mon, "Unknown socket options: %s\n", p);
2739 vlan->nb_host_devs++;
2742 if (!strcmp(device, "vde")) {
2743 static const char * const vde_params[] = {
2744 "vlan", "name", "sock", "port", "group", "mode", NULL
2746 char vde_sock[1024], vde_group[512];
2747 int vde_port, vde_mode;
2749 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2750 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2754 vlan->nb_host_devs++;
2755 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2758 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2759 vde_port = strtol(buf, NULL, 10);
2763 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2764 vde_group[0] = '\0';
2766 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2767 vde_mode = strtol(buf, NULL, 8);
2771 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2774 if (!strcmp(device, "dump")) {
2777 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2778 len = strtol(buf, NULL, 0);
2780 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2781 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2783 ret = net_dump_init(mon, vlan, device, name, buf, len);
2785 config_error(mon, "Unknown network device: %s\n", device);
2790 config_error(mon, "Could not initialize device '%s'\n", device);
2797 void net_client_uninit(NICInfo *nd)
2799 nd->vlan->nb_guest_devs--;
2802 free((void *)nd->model);
2805 static int net_host_check_device(const char *device)
2808 const char *valid_param_list[] = { "tap", "socket", "dump"
2816 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2817 if (!strncmp(valid_param_list[i], device,
2818 strlen(valid_param_list[i])))
2825 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2827 if (!net_host_check_device(device)) {
2828 monitor_printf(mon, "invalid host network device %s\n", device);
2831 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2832 monitor_printf(mon, "adding host network device %s failed\n", device);
2836 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2838 VLANClientState *vc;
2840 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
2844 if (!net_host_check_device(vc->model)) {
2845 monitor_printf(mon, "invalid host network device %s\n", device);
2848 qemu_del_vlan_client(vc);
2851 int net_client_parse(const char *str)
2859 while (*p != '\0' && *p != ',') {
2860 if ((q - device) < sizeof(device) - 1)
2868 return net_client_init(NULL, device, p);
2871 void net_set_boot_mask(int net_boot_mask)
2875 /* Only the first four NICs may be bootable */
2876 net_boot_mask = net_boot_mask & 0xF;
2878 for (i = 0; i < nb_nics; i++) {
2879 if (net_boot_mask & (1 << i)) {
2880 nd_table[i].bootable = 1;
2881 net_boot_mask &= ~(1 << i);
2885 if (net_boot_mask) {
2886 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2891 void do_info_network(Monitor *mon)
2894 VLANClientState *vc;
2896 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2897 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2898 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2899 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2903 void do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2906 VLANClientState *vc = NULL;
2908 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2909 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2910 if (strcmp(vc->name, name) == 0)
2915 monitor_printf(mon, "could not find network device '%s'\n", name);
2919 if (strcmp(up_or_down, "up") == 0)
2921 else if (strcmp(up_or_down, "down") == 0)
2924 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2925 "valid\n", up_or_down);
2927 if (vc->link_status_changed)
2928 vc->link_status_changed(vc);
2931 void net_cleanup(void)
2935 /* close network clients */
2936 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2937 VLANClientState *vc = vlan->first_client;
2940 VLANClientState *next = vc->next;
2942 qemu_del_vlan_client(vc);
2949 void net_client_check(void)
2953 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2954 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2956 if (vlan->nb_guest_devs == 0)
2957 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2958 if (vlan->nb_host_devs == 0)
2960 "Warning: vlan %d is not connected to host network\n",