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 HOST_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>
107 #include <sys/timeb.h>
108 #include <mmsystem.h>
109 #define getopt_long_only getopt_long
110 #define memalign(align, size) malloc(size)
113 #include "qemu-common.h"
117 #include "qemu-timer.h"
118 #include "qemu-char.h"
119 #include "audio/audio.h"
120 #include "qemu_socket.h"
121 #include "qemu-log.h"
123 #include "slirp/libslirp.h"
126 static VLANState *first_vlan;
128 /***********************************************************/
129 /* network device redirectors */
131 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
132 static void hex_dump(FILE *f, const uint8_t *buf, int size)
136 for(i=0;i<size;i+=16) {
140 fprintf(f, "%08x ", i);
143 fprintf(f, " %02x", buf[i+j]);
150 if (c < ' ' || c > '~')
159 static int parse_macaddr(uint8_t *macaddr, const char *p)
166 offset = strtol(p, &last_char, 0);
167 if (0 == errno && '\0' == *last_char &&
168 offset >= 0 && offset <= 0xFFFFFF) {
169 macaddr[3] = (offset & 0xFF0000) >> 16;
170 macaddr[4] = (offset & 0xFF00) >> 8;
171 macaddr[5] = offset & 0xFF;
174 for(i = 0; i < 6; i++) {
175 macaddr[i] = strtol(p, (char **)&p, 16);
180 if (*p != ':' && *p != '-')
191 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
202 if (len > buf_size - 1)
211 int parse_host_src_port(struct sockaddr_in *haddr,
212 struct sockaddr_in *saddr,
213 const char *input_str)
215 char *str = strdup(input_str);
216 char *host_str = str;
218 const char *src_str2;
222 * Chop off any extra arguments at the end of the string which
223 * would start with a comma, then fill in the src port information
224 * if it was provided else use the "any address" and "any port".
226 if ((ptr = strchr(str,',')))
229 if ((src_str = strchr(input_str,'@'))) {
234 if (parse_host_port(haddr, host_str) < 0)
238 if (!src_str || *src_str == '\0')
241 if (parse_host_port(saddr, src_str2) < 0)
252 int parse_host_port(struct sockaddr_in *saddr, const char *str)
260 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
262 saddr->sin_family = AF_INET;
263 if (buf[0] == '\0') {
264 saddr->sin_addr.s_addr = 0;
266 if (qemu_isdigit(buf[0])) {
267 if (!inet_aton(buf, &saddr->sin_addr))
270 if ((he = gethostbyname(buf)) == NULL)
272 saddr->sin_addr = *(struct in_addr *)he->h_addr;
275 port = strtol(p, (char **)&r, 0);
278 saddr->sin_port = htons(port);
282 #if !defined(_WIN32) && 0
283 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
288 len = MIN(108, strlen(str));
289 p = strchr(str, ',');
291 len = MIN(len, p - str);
293 memset(uaddr, 0, sizeof(*uaddr));
295 uaddr->sun_family = AF_UNIX;
296 memcpy(uaddr->sun_path, str, len);
302 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
304 snprintf(vc->info_str, sizeof(vc->info_str),
305 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
307 macaddr[0], macaddr[1], macaddr[2],
308 macaddr[3], macaddr[4], macaddr[5]);
311 static char *assign_name(VLANClientState *vc1, const char *model)
317 for (vlan = first_vlan; vlan; vlan = vlan->next) {
320 for (vc = vlan->first_client; vc; vc = vc->next)
321 if (vc != vc1 && strcmp(vc->model, model) == 0)
325 snprintf(buf, sizeof(buf), "%s.%d", model, id);
330 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
333 NetCanReceive *can_receive,
335 NetReceiveIOV *receive_iov,
339 VLANClientState *vc, **pvc;
340 vc = qemu_mallocz(sizeof(VLANClientState));
341 vc->model = strdup(model);
343 vc->name = strdup(name);
345 vc->name = assign_name(vc, model);
346 vc->can_receive = can_receive;
347 vc->receive = receive;
348 vc->receive_iov = receive_iov;
349 vc->cleanup = cleanup;
354 pvc = &vlan->first_client;
361 void qemu_del_vlan_client(VLANClientState *vc)
363 VLANClientState **pvc = &vc->vlan->first_client;
379 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
381 VLANClientState **pvc = &vlan->first_client;
384 if ((*pvc)->opaque == opaque)
392 static VLANClientState *
393 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
394 const char *client_str)
399 vlan = qemu_find_vlan(vlan_id, 0);
401 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
405 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
406 if (!strcmp(vc->name, client_str)) {
411 monitor_printf(mon, "can't find device %s on VLAN %d\n",
412 client_str, vlan_id);
418 int qemu_can_send_packet(VLANClientState *sender)
420 VLANState *vlan = sender->vlan;
423 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
428 /* no can_receive() handler, they can always receive */
429 if (!vc->can_receive || vc->can_receive(vc)) {
437 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
442 sender->vlan->delivering = 1;
444 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
456 len = vc->receive(vc, buf, size);
458 ret = (ret >= 0) ? ret : len;
461 sender->vlan->delivering = 0;
466 void qemu_purge_queued_packets(VLANClientState *vc)
468 VLANPacket **pp = &vc->vlan->send_queue;
470 while (*pp != NULL) {
471 VLANPacket *packet = *pp;
473 if (packet->sender == vc) {
482 void qemu_flush_queued_packets(VLANClientState *vc)
486 while ((packet = vc->vlan->send_queue) != NULL) {
489 vc->vlan->send_queue = packet->next;
491 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
492 if (ret == 0 && packet->sent_cb != NULL) {
493 packet->next = vc->vlan->send_queue;
494 vc->vlan->send_queue = packet;
499 packet->sent_cb(packet->sender, ret);
505 static void qemu_enqueue_packet(VLANClientState *sender,
506 const uint8_t *buf, int size,
507 NetPacketSent *sent_cb)
511 packet = qemu_malloc(sizeof(VLANPacket) + size);
512 packet->next = sender->vlan->send_queue;
513 packet->sender = sender;
515 packet->sent_cb = sent_cb;
516 memcpy(packet->data, buf, size);
517 sender->vlan->send_queue = packet;
520 ssize_t qemu_send_packet_async(VLANClientState *sender,
521 const uint8_t *buf, int size,
522 NetPacketSent *sent_cb)
526 if (sender->link_down) {
531 printf("vlan %d send:\n", sender->vlan->id);
532 hex_dump(stdout, buf, size);
535 if (sender->vlan->delivering) {
536 qemu_enqueue_packet(sender, buf, size, NULL);
540 ret = qemu_deliver_packet(sender, buf, size);
541 if (ret == 0 && sent_cb != NULL) {
542 qemu_enqueue_packet(sender, buf, size, sent_cb);
546 qemu_flush_queued_packets(sender);
551 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
553 qemu_send_packet_async(vc, buf, size, NULL);
556 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
559 uint8_t buffer[4096];
563 for (i = 0; i < iovcnt; i++) {
566 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
567 memcpy(buffer + offset, iov[i].iov_base, len);
571 return vc->receive(vc, buffer, offset);
574 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
579 for (i = 0; i < iovcnt; i++)
580 offset += iov[i].iov_len;
584 static int qemu_deliver_packet_iov(VLANClientState *sender,
585 const struct iovec *iov, int iovcnt)
590 sender->vlan->delivering = 1;
592 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
600 ret = calc_iov_length(iov, iovcnt);
604 if (vc->receive_iov) {
605 len = vc->receive_iov(vc, iov, iovcnt);
607 len = vc_sendv_compat(vc, iov, iovcnt);
610 ret = (ret >= 0) ? ret : len;
613 sender->vlan->delivering = 0;
618 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
619 const struct iovec *iov, int iovcnt,
620 NetPacketSent *sent_cb)
626 max_len = calc_iov_length(iov, iovcnt);
628 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
629 packet->next = sender->vlan->send_queue;
630 packet->sender = sender;
631 packet->sent_cb = sent_cb;
634 for (i = 0; i < iovcnt; i++) {
635 size_t len = iov[i].iov_len;
637 memcpy(packet->data + packet->size, iov[i].iov_base, len);
641 sender->vlan->send_queue = packet;
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) {
653 return calc_iov_length(iov, iovcnt);
656 if (sender->vlan->delivering) {
657 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
660 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
661 if (ret == 0 && sent_cb != NULL) {
662 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
666 qemu_flush_queued_packets(sender);
672 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
674 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
677 static void config_error(Monitor *mon, const char *fmt, ...)
683 monitor_vprintf(mon, fmt, ap);
685 fprintf(stderr, "qemu: ");
686 vfprintf(stderr, fmt, ap);
692 #if defined(CONFIG_SLIRP)
694 /* slirp network adapter */
696 #define SLIRP_CFG_HOSTFWD 1
697 #define SLIRP_CFG_LEGACY 2
699 struct slirp_config_str {
700 struct slirp_config_str *next;
706 typedef struct SlirpState {
707 TAILQ_ENTRY(SlirpState) entry;
715 static struct slirp_config_str *slirp_configs;
716 const char *legacy_tftp_prefix;
717 const char *legacy_bootp_filename;
718 static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
719 TAILQ_HEAD_INITIALIZER(slirp_stacks);
721 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
723 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
727 static const char *legacy_smb_export;
729 static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
730 struct in_addr vserver_addr);
731 static void slirp_smb_cleanup(SlirpState *s);
733 static inline void slirp_smb_cleanup(SlirpState *s) { }
736 int slirp_can_output(void *opaque)
738 SlirpState *s = opaque;
740 return qemu_can_send_packet(s->vc);
743 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
745 SlirpState *s = opaque;
748 printf("slirp output:\n");
749 hex_dump(stdout, pkt, pkt_len);
751 qemu_send_packet(s->vc, pkt, pkt_len);
754 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
756 SlirpState *s = vc->opaque;
759 printf("slirp input:\n");
760 hex_dump(stdout, buf, size);
762 slirp_input(s->slirp, buf, size);
766 static void net_slirp_cleanup(VLANClientState *vc)
768 SlirpState *s = vc->opaque;
770 slirp_cleanup(s->slirp);
771 slirp_smb_cleanup(s);
772 TAILQ_REMOVE(&slirp_stacks, s, entry);
776 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
777 const char *name, int restricted,
778 const char *vnetwork, const char *vhost,
779 const char *vhostname, const char *tftp_export,
780 const char *bootfile, const char *vdhcp_start,
781 const char *vnameserver, const char *smb_export,
782 const char *vsmbserver)
784 /* default settings according to historic slirp */
785 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
786 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
787 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
788 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
789 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
791 struct in_addr smbsrv = { .s_addr = 0 };
800 tftp_export = legacy_tftp_prefix;
803 bootfile = legacy_bootp_filename;
807 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
808 if (!inet_aton(vnetwork, &net)) {
811 addr = ntohl(net.s_addr);
812 if (!(addr & 0x80000000)) {
813 mask.s_addr = htonl(0xff000000); /* class A */
814 } else if ((addr & 0xfff00000) == 0xac100000) {
815 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
816 } else if ((addr & 0xc0000000) == 0x80000000) {
817 mask.s_addr = htonl(0xffff0000); /* class B */
818 } else if ((addr & 0xffff0000) == 0xc0a80000) {
819 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
820 } else if ((addr & 0xffff0000) == 0xc6120000) {
821 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
822 } else if ((addr & 0xe0000000) == 0xe0000000) {
823 mask.s_addr = htonl(0xffffff00); /* class C */
825 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
828 if (!inet_aton(buf, &net)) {
831 shift = strtol(vnetwork, &end, 10);
833 if (!inet_aton(vnetwork, &mask)) {
836 } else if (shift < 4 || shift > 32) {
839 mask.s_addr = htonl(0xffffffff << (32 - shift));
842 net.s_addr &= mask.s_addr;
843 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
844 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
845 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
848 if (vhost && !inet_aton(vhost, &host)) {
851 if ((host.s_addr & mask.s_addr) != net.s_addr) {
855 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
858 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
859 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
863 if (vnameserver && !inet_aton(vnameserver, &dns)) {
866 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
867 dns.s_addr == host.s_addr) {
872 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
877 s = qemu_mallocz(sizeof(SlirpState));
878 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
879 tftp_export, bootfile, dhcp, dns, s);
880 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
882 while (slirp_configs) {
883 struct slirp_config_str *config = slirp_configs;
885 if (config->flags & SLIRP_CFG_HOSTFWD) {
886 slirp_hostfwd(s, mon, config->str,
887 config->flags & SLIRP_CFG_LEGACY);
889 slirp_guestfwd(s, mon, config->str,
890 config->flags & SLIRP_CFG_LEGACY);
892 slirp_configs = config->next;
897 smb_export = legacy_smb_export;
900 slirp_smb(s, mon, smb_export, smbsrv);
904 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
905 net_slirp_cleanup, s);
906 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
907 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
911 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
917 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
921 if (strcmp(vc->model, "user")) {
922 monitor_printf(mon, "invalid device specified\n");
927 if (TAILQ_EMPTY(&slirp_stacks)) {
928 monitor_printf(mon, "user mode network stack not in use\n");
931 return TAILQ_FIRST(&slirp_stacks);
935 void net_slirp_hostfwd_remove(Monitor *mon, const char *arg1,
936 const char *arg2, const char *arg3)
938 struct in_addr host_addr = { .s_addr = INADDR_ANY };
941 const char *src_str, *p;
947 s = slirp_lookup(mon, arg1, arg2);
950 s = slirp_lookup(mon, NULL, NULL);
957 if (!src_str || !src_str[0])
961 get_str_sep(buf, sizeof(buf), &p, ':');
963 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
965 } else if (!strcmp(buf, "udp")) {
971 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
974 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
980 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
981 host_addr, host_port);
983 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
984 err ? "removed" : "not found");
988 monitor_printf(mon, "invalid format\n");
991 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
994 struct in_addr host_addr = { .s_addr = INADDR_ANY };
995 struct in_addr guest_addr = { .s_addr = 0 };
996 int host_port, guest_port;
1003 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1006 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
1008 } else if (!strcmp(buf, "udp")) {
1014 if (!legacy_format) {
1015 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1018 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1023 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
1026 host_port = strtol(buf, &end, 0);
1027 if (*end != '\0' || host_port < 1 || host_port > 65535) {
1031 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1034 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1038 guest_port = strtol(p, &end, 0);
1039 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1043 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1045 config_error(mon, "could not set up host forwarding rule '%s'\n",
1051 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
1054 void net_slirp_hostfwd_add(Monitor *mon, const char *arg1,
1055 const char *arg2, const char *arg3)
1057 const char *redir_str;
1061 s = slirp_lookup(mon, arg1, arg2);
1064 s = slirp_lookup(mon, NULL, NULL);
1068 slirp_hostfwd(s, mon, redir_str, 0);
1073 void net_slirp_redir(const char *redir_str)
1075 struct slirp_config_str *config;
1077 if (TAILQ_EMPTY(&slirp_stacks)) {
1078 config = qemu_malloc(sizeof(*config));
1079 pstrcpy(config->str, sizeof(config->str), redir_str);
1080 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1081 config->next = slirp_configs;
1082 slirp_configs = config;
1086 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
1091 /* automatic user mode samba server configuration */
1092 static void slirp_smb_cleanup(SlirpState *s)
1096 if (s->smb_dir[0] != '\0') {
1097 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1099 s->smb_dir[0] = '\0';
1103 static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
1104 struct in_addr vserver_addr)
1106 static int instance;
1108 char smb_cmdline[128];
1111 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1112 (long)getpid(), instance++);
1113 if (mkdir(s->smb_dir, 0700) < 0) {
1114 config_error(mon, "could not create samba server dir '%s'\n",
1118 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1120 f = fopen(smb_conf, "w");
1122 slirp_smb_cleanup(s);
1123 config_error(mon, "could not create samba server "
1124 "configuration file '%s'\n", smb_conf);
1131 "socket address=127.0.0.1\n"
1132 "pid directory=%s\n"
1133 "lock directory=%s\n"
1134 "log file=%s/log.smbd\n"
1135 "smb passwd file=%s/smbpasswd\n"
1136 "security = share\n"
1150 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1151 SMBD_COMMAND, smb_conf);
1153 if (slirp_add_exec(s->slirp, 0, smb_cmdline, vserver_addr, 139) < 0) {
1154 slirp_smb_cleanup(s);
1155 config_error(mon, "conflicting/invalid smbserver address\n");
1159 /* automatic user mode samba server configuration (legacy interface) */
1160 void net_slirp_smb(const char *exported_dir)
1162 struct in_addr vserver_addr = { .s_addr = 0 };
1164 if (legacy_smb_export) {
1165 fprintf(stderr, "-smb given twice\n");
1168 legacy_smb_export = exported_dir;
1169 if (!TAILQ_EMPTY(&slirp_stacks)) {
1170 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1175 #endif /* !defined(_WIN32) */
1178 CharDriverState *hd;
1179 struct in_addr server;
1184 static int guestfwd_can_read(void *opaque)
1186 struct GuestFwd *fwd = opaque;
1187 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1190 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1192 struct GuestFwd *fwd = opaque;
1193 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1196 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1199 struct in_addr server = { .s_addr = 0 };
1200 struct GuestFwd *fwd;
1207 if (legacy_format) {
1208 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1212 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1215 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1218 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1221 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1224 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1228 port = strtol(buf, &end, 10);
1229 if (*end != '\0' || port < 1 || port > 65535) {
1233 fwd = qemu_malloc(sizeof(struct GuestFwd));
1234 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1235 fwd->hd = qemu_chr_open(buf, p, NULL);
1237 config_error(mon, "could not open guest forwarding device '%s'\n",
1242 fwd->server = server;
1244 fwd->slirp = s->slirp;
1246 if (slirp_add_exec(s->slirp, 3, fwd->hd, server, port) < 0) {
1247 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1248 "rule '%s'\n", config_str);
1252 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1257 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1260 void do_info_usernet(Monitor *mon)
1264 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1265 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1266 slirp_connection_info(s->slirp, mon);
1270 #endif /* CONFIG_SLIRP */
1272 #if !defined(_WIN32)
1274 typedef struct TAPState {
1275 VLANClientState *vc;
1277 char down_script[1024];
1278 char down_script_arg[128];
1280 unsigned int read_poll : 1;
1281 unsigned int write_poll : 1;
1284 static int launch_script(const char *setup_script, const char *ifname, int fd);
1286 static int tap_can_send(void *opaque);
1287 static void tap_send(void *opaque);
1288 static void tap_writable(void *opaque);
1290 static void tap_update_fd_handler(TAPState *s)
1292 qemu_set_fd_handler2(s->fd,
1293 s->read_poll ? tap_can_send : NULL,
1294 s->read_poll ? tap_send : NULL,
1295 s->write_poll ? tap_writable : NULL,
1299 static void tap_read_poll(TAPState *s, int enable)
1301 s->read_poll = !!enable;
1302 tap_update_fd_handler(s);
1305 static void tap_write_poll(TAPState *s, int enable)
1307 s->write_poll = !!enable;
1308 tap_update_fd_handler(s);
1311 static void tap_writable(void *opaque)
1313 TAPState *s = opaque;
1315 tap_write_poll(s, 0);
1317 qemu_flush_queued_packets(s->vc);
1320 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1323 TAPState *s = vc->opaque;
1327 len = writev(s->fd, iov, iovcnt);
1328 } while (len == -1 && errno == EINTR);
1330 if (len == -1 && errno == EAGAIN) {
1331 tap_write_poll(s, 1);
1338 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1340 TAPState *s = vc->opaque;
1344 len = write(s->fd, buf, size);
1345 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1350 static int tap_can_send(void *opaque)
1352 TAPState *s = opaque;
1354 return qemu_can_send_packet(s->vc);
1358 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1363 sbuf.maxlen = maxlen;
1364 sbuf.buf = (char *)buf;
1366 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1369 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1371 return read(tapfd, buf, maxlen);
1375 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1377 TAPState *s = vc->opaque;
1378 tap_read_poll(s, 1);
1381 static void tap_send(void *opaque)
1383 TAPState *s = opaque;
1387 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1392 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1394 tap_read_poll(s, 0);
1400 /* sndbuf should be set to a value lower than the tx queue
1401 * capacity of any destination network interface.
1402 * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
1403 * a good default, given a 1500 byte MTU.
1405 #define TAP_DEFAULT_SNDBUF 1024*1024
1407 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1409 int sndbuf = TAP_DEFAULT_SNDBUF;
1412 sndbuf = atoi(sndbuf_str);
1419 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && sndbuf_str) {
1420 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1425 static void tap_set_sndbuf(TAPState *s, const char *sndbuf_str, Monitor *mon)
1428 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1431 #endif /* TUNSETSNDBUF */
1433 static void tap_cleanup(VLANClientState *vc)
1435 TAPState *s = vc->opaque;
1437 qemu_purge_queued_packets(vc);
1439 if (s->down_script[0])
1440 launch_script(s->down_script, s->down_script_arg, s->fd);
1442 tap_read_poll(s, 0);
1443 tap_write_poll(s, 0);
1450 static TAPState *net_tap_fd_init(VLANState *vlan,
1457 s = qemu_mallocz(sizeof(TAPState));
1459 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1460 tap_receive_iov, tap_cleanup, s);
1461 tap_read_poll(s, 1);
1462 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1466 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1467 static int tap_open(char *ifname, int ifname_size)
1473 TFR(fd = open("/dev/tap", O_RDWR));
1475 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1480 dev = devname(s.st_rdev, S_IFCHR);
1481 pstrcpy(ifname, ifname_size, dev);
1483 fcntl(fd, F_SETFL, O_NONBLOCK);
1486 #elif defined(__sun__)
1487 #define TUNNEWPPA (('T'<<16) | 0x0001)
1489 * Allocate TAP device, returns opened fd.
1490 * Stores dev name in the first arg(must be large enough).
1492 static int tap_alloc(char *dev, size_t dev_size)
1494 int tap_fd, if_fd, ppa = -1;
1495 static int ip_fd = 0;
1498 static int arp_fd = 0;
1499 int ip_muxid, arp_muxid;
1500 struct strioctl strioc_if, strioc_ppa;
1501 int link_type = I_PLINK;;
1503 char actual_name[32] = "";
1505 memset(&ifr, 0x0, sizeof(ifr));
1509 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1513 /* Check if IP device was opened */
1517 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1519 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1523 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1525 syslog(LOG_ERR, "Can't open /dev/tap");
1529 /* Assign a new PPA and get its unit number. */
1530 strioc_ppa.ic_cmd = TUNNEWPPA;
1531 strioc_ppa.ic_timout = 0;
1532 strioc_ppa.ic_len = sizeof(ppa);
1533 strioc_ppa.ic_dp = (char *)&ppa;
1534 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1535 syslog (LOG_ERR, "Can't assign new interface");
1537 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1539 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1542 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1543 syslog(LOG_ERR, "Can't push IP module");
1547 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1548 syslog(LOG_ERR, "Can't get flags\n");
1550 snprintf (actual_name, 32, "tap%d", ppa);
1551 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1554 /* Assign ppa according to the unit number returned by tun device */
1556 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1557 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1558 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1559 syslog (LOG_ERR, "Can't get flags\n");
1560 /* Push arp module to if_fd */
1561 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1562 syslog (LOG_ERR, "Can't push ARP module (2)");
1564 /* Push arp module to ip_fd */
1565 if (ioctl (ip_fd, I_POP, NULL) < 0)
1566 syslog (LOG_ERR, "I_POP failed\n");
1567 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1568 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1570 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1572 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1574 /* Set ifname to arp */
1575 strioc_if.ic_cmd = SIOCSLIFNAME;
1576 strioc_if.ic_timout = 0;
1577 strioc_if.ic_len = sizeof(ifr);
1578 strioc_if.ic_dp = (char *)𝔦
1579 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1580 syslog (LOG_ERR, "Can't set ifname to arp\n");
1583 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1584 syslog(LOG_ERR, "Can't link TAP device to IP");
1588 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1589 syslog (LOG_ERR, "Can't link TAP device to ARP");
1593 memset(&ifr, 0x0, sizeof(ifr));
1594 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1595 ifr.lifr_ip_muxid = ip_muxid;
1596 ifr.lifr_arp_muxid = arp_muxid;
1598 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1600 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1601 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1602 syslog (LOG_ERR, "Can't set multiplexor id");
1605 snprintf(dev, dev_size, "tap%d", ppa);
1609 static int tap_open(char *ifname, int ifname_size)
1613 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1614 fprintf(stderr, "Cannot allocate TAP device\n");
1617 pstrcpy(ifname, ifname_size, dev);
1618 fcntl(fd, F_SETFL, O_NONBLOCK);
1621 #elif defined (_AIX)
1622 static int tap_open(char *ifname, int ifname_size)
1624 fprintf (stderr, "no tap on AIX\n");
1628 static int tap_open(char *ifname, int ifname_size)
1633 TFR(fd = open("/dev/net/tun", O_RDWR));
1635 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1638 memset(&ifr, 0, sizeof(ifr));
1639 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1640 if (ifname[0] != '\0')
1641 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1643 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1644 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1646 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1650 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1651 fcntl(fd, F_SETFL, O_NONBLOCK);
1656 static int launch_script(const char *setup_script, const char *ifname, int fd)
1658 sigset_t oldmask, mask;
1664 sigaddset(&mask, SIGCHLD);
1665 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1667 /* try to launch network script */
1670 int open_max = sysconf(_SC_OPEN_MAX), i;
1672 for (i = 0; i < open_max; i++) {
1673 if (i != STDIN_FILENO &&
1674 i != STDOUT_FILENO &&
1675 i != STDERR_FILENO &&
1681 *parg++ = (char *)setup_script;
1682 *parg++ = (char *)ifname;
1684 execv(setup_script, args);
1686 } else if (pid > 0) {
1687 while (waitpid(pid, &status, 0) != pid) {
1690 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1692 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1696 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1700 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1701 const char *name, const char *ifname1,
1702 const char *setup_script, const char *down_script)
1708 if (ifname1 != NULL)
1709 pstrcpy(ifname, sizeof(ifname), ifname1);
1712 TFR(fd = tap_open(ifname, sizeof(ifname)));
1716 if (!setup_script || !strcmp(setup_script, "no"))
1718 if (setup_script[0] != '\0' &&
1719 launch_script(setup_script, ifname, fd)) {
1722 s = net_tap_fd_init(vlan, model, name, fd);
1723 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1724 "ifname=%s,script=%s,downscript=%s",
1725 ifname, setup_script, down_script);
1726 if (down_script && strcmp(down_script, "no")) {
1727 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1728 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1733 #endif /* !_WIN32 */
1735 #if defined(CONFIG_VDE)
1736 typedef struct VDEState {
1737 VLANClientState *vc;
1741 static void vde_to_qemu(void *opaque)
1743 VDEState *s = opaque;
1747 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1749 qemu_send_packet(s->vc, buf, size);
1753 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1755 VDEState *s = vc->opaque;
1759 ret = vde_send(s->vde, (const char *)buf, size, 0);
1760 } while (ret < 0 && errno == EINTR);
1765 static void vde_cleanup(VLANClientState *vc)
1767 VDEState *s = vc->opaque;
1768 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1773 static int net_vde_init(VLANState *vlan, const char *model,
1774 const char *name, const char *sock,
1775 int port, const char *group, int mode)
1778 char *init_group = strlen(group) ? (char *)group : NULL;
1779 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1781 struct vde_open_args args = {
1783 .group = init_group,
1787 s = qemu_mallocz(sizeof(VDEState));
1788 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1793 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1794 NULL, vde_cleanup, s);
1795 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1796 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1797 sock, vde_datafd(s->vde));
1802 /* network connection */
1803 typedef struct NetSocketState {
1804 VLANClientState *vc;
1806 int state; /* 0 = getting length, 1 = getting data */
1808 unsigned int packet_len;
1810 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1813 typedef struct NetSocketListenState {
1818 } NetSocketListenState;
1820 /* XXX: we consider we can send the whole packet without blocking */
1821 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1823 NetSocketState *s = vc->opaque;
1827 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1828 return send_all(s->fd, buf, size);
1831 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1833 NetSocketState *s = vc->opaque;
1835 return sendto(s->fd, (const void *)buf, size, 0,
1836 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1839 static void net_socket_send(void *opaque)
1841 NetSocketState *s = opaque;
1847 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1849 err = socket_error();
1850 if (err != EWOULDBLOCK)
1852 } else if (size == 0) {
1853 /* end of connection */
1855 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1861 /* reassemble a packet from the network */
1867 memcpy(s->buf + s->index, buf, l);
1871 if (s->index == 4) {
1873 s->packet_len = ntohl(*(uint32_t *)s->buf);
1879 l = s->packet_len - s->index;
1882 if (s->index + l <= sizeof(s->buf)) {
1883 memcpy(s->buf + s->index, buf, l);
1885 fprintf(stderr, "serious error: oversized packet received,"
1886 "connection terminated.\n");
1894 if (s->index >= s->packet_len) {
1895 qemu_send_packet(s->vc, s->buf, s->packet_len);
1904 static void net_socket_send_dgram(void *opaque)
1906 NetSocketState *s = opaque;
1909 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1913 /* end of connection */
1914 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1917 qemu_send_packet(s->vc, s->buf, size);
1920 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1925 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1926 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1927 inet_ntoa(mcastaddr->sin_addr),
1928 (int)ntohl(mcastaddr->sin_addr.s_addr));
1932 fd = socket(PF_INET, SOCK_DGRAM, 0);
1934 perror("socket(PF_INET, SOCK_DGRAM)");
1939 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1940 (const char *)&val, sizeof(val));
1942 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1946 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1952 /* Add host to multicast group */
1953 imr.imr_multiaddr = mcastaddr->sin_addr;
1954 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1956 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1957 (const char *)&imr, sizeof(struct ip_mreq));
1959 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1963 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1965 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1966 (const char *)&val, sizeof(val));
1968 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1972 socket_set_nonblock(fd);
1980 static void net_socket_cleanup(VLANClientState *vc)
1982 NetSocketState *s = vc->opaque;
1983 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1988 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1991 int fd, int is_connected)
1993 struct sockaddr_in saddr;
1995 socklen_t saddr_len;
1998 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1999 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
2000 * by ONLY ONE process: we must "clone" this dgram socket --jjo
2004 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
2006 if (saddr.sin_addr.s_addr==0) {
2007 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
2011 /* clone dgram socket */
2012 newfd = net_socket_mcast_create(&saddr);
2014 /* error already reported by net_socket_mcast_create() */
2018 /* clone newfd to fd, close newfd */
2023 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
2024 fd, strerror(errno));
2029 s = qemu_mallocz(sizeof(NetSocketState));
2032 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
2033 NULL, net_socket_cleanup, s);
2034 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
2036 /* mcast: save bound address as dst */
2037 if (is_connected) s->dgram_dst=saddr;
2039 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2040 "socket: fd=%d (%s mcast=%s:%d)",
2041 fd, is_connected? "cloned" : "",
2042 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2046 static void net_socket_connect(void *opaque)
2048 NetSocketState *s = opaque;
2049 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
2052 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
2055 int fd, int is_connected)
2058 s = qemu_mallocz(sizeof(NetSocketState));
2060 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
2061 NULL, net_socket_cleanup, s);
2062 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2063 "socket: fd=%d", fd);
2065 net_socket_connect(s);
2067 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
2072 static NetSocketState *net_socket_fd_init(VLANState *vlan,
2073 const char *model, const char *name,
2074 int fd, int is_connected)
2076 int so_type=-1, optlen=sizeof(so_type);
2078 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2079 (socklen_t *)&optlen)< 0) {
2080 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2085 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2087 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2089 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2090 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2091 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2096 static void net_socket_accept(void *opaque)
2098 NetSocketListenState *s = opaque;
2100 struct sockaddr_in saddr;
2105 len = sizeof(saddr);
2106 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2107 if (fd < 0 && errno != EINTR) {
2109 } else if (fd >= 0) {
2113 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2117 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2118 "socket: connection from %s:%d",
2119 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2123 static int net_socket_listen_init(VLANState *vlan,
2126 const char *host_str)
2128 NetSocketListenState *s;
2130 struct sockaddr_in saddr;
2132 if (parse_host_port(&saddr, host_str) < 0)
2135 s = qemu_mallocz(sizeof(NetSocketListenState));
2137 fd = socket(PF_INET, SOCK_STREAM, 0);
2142 socket_set_nonblock(fd);
2144 /* allow fast reuse */
2146 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2148 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2153 ret = listen(fd, 0);
2159 s->model = strdup(model);
2160 s->name = name ? strdup(name) : NULL;
2162 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2166 static int net_socket_connect_init(VLANState *vlan,
2169 const char *host_str)
2172 int fd, connected, ret, err;
2173 struct sockaddr_in saddr;
2175 if (parse_host_port(&saddr, host_str) < 0)
2178 fd = socket(PF_INET, SOCK_STREAM, 0);
2183 socket_set_nonblock(fd);
2187 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2189 err = socket_error();
2190 if (err == EINTR || err == EWOULDBLOCK) {
2191 } else if (err == EINPROGRESS) {
2194 } else if (err == WSAEALREADY) {
2207 s = net_socket_fd_init(vlan, model, name, fd, connected);
2210 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2211 "socket: connect to %s:%d",
2212 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2216 static int net_socket_mcast_init(VLANState *vlan,
2219 const char *host_str)
2223 struct sockaddr_in saddr;
2225 if (parse_host_port(&saddr, host_str) < 0)
2229 fd = net_socket_mcast_create(&saddr);
2233 s = net_socket_fd_init(vlan, model, name, fd, 0);
2237 s->dgram_dst = saddr;
2239 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2240 "socket: mcast=%s:%d",
2241 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2246 typedef struct DumpState {
2247 VLANClientState *pcap_vc;
2252 #define PCAP_MAGIC 0xa1b2c3d4
2254 struct pcap_file_hdr {
2256 uint16_t version_major;
2257 uint16_t version_minor;
2264 struct pcap_sf_pkthdr {
2273 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2275 DumpState *s = vc->opaque;
2276 struct pcap_sf_pkthdr hdr;
2280 /* Early return in case of previous error. */
2285 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2286 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2288 hdr.ts.tv_sec = ts / 1000000;
2289 hdr.ts.tv_usec = ts % 1000000;
2290 hdr.caplen = caplen;
2292 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2293 write(s->fd, buf, caplen) != caplen) {
2294 qemu_log("-net dump write error - stop dump\n");
2302 static void net_dump_cleanup(VLANClientState *vc)
2304 DumpState *s = vc->opaque;
2310 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2311 const char *name, const char *filename, int len)
2313 struct pcap_file_hdr hdr;
2316 s = qemu_malloc(sizeof(DumpState));
2318 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2320 config_error(mon, "-net dump: can't open %s\n", filename);
2324 s->pcap_caplen = len;
2326 hdr.magic = PCAP_MAGIC;
2327 hdr.version_major = 2;
2328 hdr.version_minor = 4;
2331 hdr.snaplen = s->pcap_caplen;
2334 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2335 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2341 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2342 net_dump_cleanup, s);
2343 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2344 "dump to %s (len=%d)", filename, len);
2348 /* find or alloc a new VLAN */
2349 VLANState *qemu_find_vlan(int id, int allocate)
2351 VLANState **pvlan, *vlan;
2352 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2359 vlan = qemu_mallocz(sizeof(VLANState));
2362 pvlan = &first_vlan;
2363 while (*pvlan != NULL)
2364 pvlan = &(*pvlan)->next;
2369 static int nic_get_free_idx(void)
2373 for (index = 0; index < MAX_NICS; index++)
2374 if (!nd_table[index].used)
2379 void qemu_check_nic_model(NICInfo *nd, const char *model)
2381 const char *models[2];
2386 qemu_check_nic_model_list(nd, models, model);
2389 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2390 const char *default_model)
2392 int i, exit_status = 0;
2395 nd->model = strdup(default_model);
2397 if (strcmp(nd->model, "?") != 0) {
2398 for (i = 0 ; models[i]; i++)
2399 if (strcmp(nd->model, models[i]) == 0)
2402 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2406 fprintf(stderr, "qemu: Supported NIC models: ");
2407 for (i = 0 ; models[i]; i++)
2408 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2413 int net_client_init(Monitor *mon, const char *device, const char *p)
2421 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2422 vlan_id = strtol(buf, NULL, 0);
2424 vlan = qemu_find_vlan(vlan_id, 1);
2426 if (get_param_value(buf, sizeof(buf), "name", p)) {
2427 name = qemu_strdup(buf);
2429 if (!strcmp(device, "nic")) {
2430 static const char * const nic_params[] = {
2431 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
2435 int idx = nic_get_free_idx();
2437 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2438 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2442 if (idx == -1 || nb_nics >= MAX_NICS) {
2443 config_error(mon, "Too Many NICs\n");
2447 nd = &nd_table[idx];
2448 macaddr = nd->macaddr;
2454 macaddr[5] = 0x56 + idx;
2456 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2457 if (parse_macaddr(macaddr, buf) < 0) {
2458 config_error(mon, "invalid syntax for ethernet address\n");
2463 if (get_param_value(buf, sizeof(buf), "model", p)) {
2464 nd->model = strdup(buf);
2466 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2467 nd->devaddr = strdup(buf);
2469 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2470 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2472 long vectors = strtol(buf, &endptr, 0);
2474 config_error(mon, "invalid syntax for # of vectors\n");
2478 if (vectors < 0 || vectors > 0x7ffffff) {
2479 config_error(mon, "invalid # of vectors\n");
2483 nd->nvectors = vectors;
2490 vlan->nb_guest_devs++;
2493 if (!strcmp(device, "none")) {
2495 config_error(mon, "'none' takes no parameters\n");
2499 /* does nothing. It is needed to signal that no network cards
2504 if (!strcmp(device, "user")) {
2505 static const char * const slirp_params[] = {
2506 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2507 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2508 "hostfwd", "guestfwd", NULL
2510 struct slirp_config_str *config;
2514 char *vhostname = NULL;
2515 char *tftp_export = NULL;
2516 char *bootfile = NULL;
2517 char *vdhcp_start = NULL;
2518 char *vnamesrv = NULL;
2519 char *smb_export = NULL;
2520 char *vsmbsrv = NULL;
2523 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2524 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2528 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2529 int vnet_buflen = strlen(buf) + strlen("/24") + 1;
2530 /* emulate legacy parameter */
2531 vnet = qemu_malloc(vnet_buflen);
2532 pstrcpy(vnet, vnet_buflen, buf);
2533 pstrcat(vnet, vnet_buflen, "/24");
2535 if (get_param_value(buf, sizeof(buf), "net", p)) {
2536 vnet = qemu_strdup(buf);
2538 if (get_param_value(buf, sizeof(buf), "host", p)) {
2539 vhost = qemu_strdup(buf);
2541 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2542 vhostname = qemu_strdup(buf);
2544 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2545 restricted = (buf[0] == 'y') ? 1 : 0;
2547 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2548 vdhcp_start = qemu_strdup(buf);
2550 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2551 vnamesrv = qemu_strdup(buf);
2553 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2554 tftp_export = qemu_strdup(buf);
2556 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2557 bootfile = qemu_strdup(buf);
2559 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2560 smb_export = qemu_strdup(buf);
2561 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2562 vsmbsrv = qemu_strdup(buf);
2567 config = qemu_malloc(sizeof(*config));
2568 if (!get_next_param_value(config->str, sizeof(config->str),
2572 config->flags = SLIRP_CFG_HOSTFWD;
2573 config->next = slirp_configs;
2574 slirp_configs = config;
2579 config = qemu_malloc(sizeof(*config));
2580 if (!get_next_param_value(config->str, sizeof(config->str),
2585 config->next = slirp_configs;
2586 slirp_configs = config;
2590 vlan->nb_host_devs++;
2591 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2592 vhostname, tftp_export, bootfile, vdhcp_start,
2593 vnamesrv, smb_export, vsmbsrv);
2596 qemu_free(vhostname);
2597 qemu_free(tftp_export);
2598 qemu_free(bootfile);
2599 qemu_free(vdhcp_start);
2600 qemu_free(vnamesrv);
2601 qemu_free(smb_export);
2603 } else if (!strcmp(device, "channel")) {
2604 if (TAILQ_EMPTY(&slirp_stacks)) {
2605 struct slirp_config_str *config;
2607 config = qemu_malloc(sizeof(*config));
2608 pstrcpy(config->str, sizeof(config->str), p);
2609 config->flags = SLIRP_CFG_LEGACY;
2610 config->next = slirp_configs;
2611 slirp_configs = config;
2613 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
2619 if (!strcmp(device, "tap")) {
2620 static const char * const tap_params[] = {
2621 "vlan", "name", "ifname", NULL
2625 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2626 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2630 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2631 config_error(mon, "tap: no interface name\n");
2635 vlan->nb_host_devs++;
2636 ret = tap_win32_init(vlan, device, name, ifname);
2638 #elif defined (_AIX)
2640 if (!strcmp(device, "tap")) {
2641 char ifname[64], chkbuf[64];
2642 char setup_script[1024], down_script[1024];
2645 vlan->nb_host_devs++;
2646 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2647 static const char * const fd_params[] = {
2648 "vlan", "name", "fd", "sndbuf", NULL
2650 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2651 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2655 fd = strtol(buf, NULL, 0);
2656 fcntl(fd, F_SETFL, O_NONBLOCK);
2657 s = net_tap_fd_init(vlan, device, name, fd);
2659 static const char * const tap_params[] = {
2660 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2662 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2663 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2667 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2670 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2671 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2673 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2674 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2676 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2679 const char *sndbuf_str = NULL;
2680 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2683 tap_set_sndbuf(s, sndbuf_str, mon);
2690 if (!strcmp(device, "socket")) {
2692 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2693 static const char * const fd_params[] = {
2694 "vlan", "name", "fd", NULL
2697 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2698 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2702 fd = strtol(buf, NULL, 0);
2704 if (net_socket_fd_init(vlan, device, name, fd, 1))
2706 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2707 static const char * const listen_params[] = {
2708 "vlan", "name", "listen", NULL
2710 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2711 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2715 ret = net_socket_listen_init(vlan, device, name, buf);
2716 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2717 static const char * const connect_params[] = {
2718 "vlan", "name", "connect", NULL
2720 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2721 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2725 ret = net_socket_connect_init(vlan, device, name, buf);
2726 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2727 static const char * const mcast_params[] = {
2728 "vlan", "name", "mcast", NULL
2730 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2731 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2735 ret = net_socket_mcast_init(vlan, device, name, buf);
2737 config_error(mon, "Unknown socket options: %s\n", p);
2741 vlan->nb_host_devs++;
2744 if (!strcmp(device, "vde")) {
2745 static const char * const vde_params[] = {
2746 "vlan", "name", "sock", "port", "group", "mode", NULL
2748 char vde_sock[1024], vde_group[512];
2749 int vde_port, vde_mode;
2751 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2752 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2756 vlan->nb_host_devs++;
2757 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2760 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2761 vde_port = strtol(buf, NULL, 10);
2765 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2766 vde_group[0] = '\0';
2768 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2769 vde_mode = strtol(buf, NULL, 8);
2773 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2776 if (!strcmp(device, "dump")) {
2779 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2780 len = strtol(buf, NULL, 0);
2782 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2783 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2785 ret = net_dump_init(mon, vlan, device, name, buf, len);
2787 config_error(mon, "Unknown network device: %s\n", device);
2792 config_error(mon, "Could not initialize device '%s'\n", device);
2799 void net_client_uninit(NICInfo *nd)
2801 nd->vlan->nb_guest_devs--;
2804 free((void *)nd->model);
2807 static int net_host_check_device(const char *device)
2810 const char *valid_param_list[] = { "tap", "socket", "dump"
2818 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2819 if (!strncmp(valid_param_list[i], device,
2820 strlen(valid_param_list[i])))
2827 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2829 if (!net_host_check_device(device)) {
2830 monitor_printf(mon, "invalid host network device %s\n", device);
2833 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2834 monitor_printf(mon, "adding host network device %s failed\n", device);
2838 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2840 VLANClientState *vc;
2842 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
2846 if (!net_host_check_device(vc->model)) {
2847 monitor_printf(mon, "invalid host network device %s\n", device);
2850 qemu_del_vlan_client(vc);
2853 int net_client_parse(const char *str)
2861 while (*p != '\0' && *p != ',') {
2862 if ((q - device) < sizeof(device) - 1)
2870 return net_client_init(NULL, device, p);
2873 void net_set_boot_mask(int net_boot_mask)
2877 /* Only the first four NICs may be bootable */
2878 net_boot_mask = net_boot_mask & 0xF;
2880 for (i = 0; i < nb_nics; i++) {
2881 if (net_boot_mask & (1 << i)) {
2882 nd_table[i].bootable = 1;
2883 net_boot_mask &= ~(1 << i);
2887 if (net_boot_mask) {
2888 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2893 void do_info_network(Monitor *mon)
2896 VLANClientState *vc;
2898 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2899 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2900 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2901 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2905 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2908 VLANClientState *vc = NULL;
2910 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2911 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2912 if (strcmp(vc->name, name) == 0)
2917 monitor_printf(mon, "could not find network device '%s'", name);
2921 if (strcmp(up_or_down, "up") == 0)
2923 else if (strcmp(up_or_down, "down") == 0)
2926 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2927 "valid\n", up_or_down);
2929 if (vc->link_status_changed)
2930 vc->link_status_changed(vc);
2935 void net_cleanup(void)
2939 /* close network clients */
2940 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2941 VLANClientState *vc = vlan->first_client;
2944 VLANClientState *next = vc->next;
2946 qemu_del_vlan_client(vc);
2953 void net_client_check(void)
2957 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2958 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2960 if (vlan->nb_guest_devs == 0)
2961 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2962 if (vlan->nb_host_devs == 0)
2964 "Warning: vlan %d is not connected to host network\n",