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 int qemu_can_send_packet(VLANClientState *sender)
394 VLANState *vlan = sender->vlan;
397 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
402 /* no can_receive() handler, they can always receive */
403 if (!vc->can_receive || vc->can_receive(vc)) {
411 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
416 sender->vlan->delivering = 1;
418 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
430 len = vc->receive(vc, buf, size);
432 ret = (ret >= 0) ? ret : len;
435 sender->vlan->delivering = 0;
440 void qemu_purge_queued_packets(VLANClientState *vc)
442 VLANPacket **pp = &vc->vlan->send_queue;
444 while (*pp != NULL) {
445 VLANPacket *packet = *pp;
447 if (packet->sender == vc) {
456 void qemu_flush_queued_packets(VLANClientState *vc)
460 while ((packet = vc->vlan->send_queue) != NULL) {
463 vc->vlan->send_queue = packet->next;
465 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
466 if (ret == 0 && packet->sent_cb != NULL) {
467 packet->next = vc->vlan->send_queue;
468 vc->vlan->send_queue = packet;
473 packet->sent_cb(packet->sender, ret);
479 static void qemu_enqueue_packet(VLANClientState *sender,
480 const uint8_t *buf, int size,
481 NetPacketSent *sent_cb)
485 packet = qemu_malloc(sizeof(VLANPacket) + size);
486 packet->next = sender->vlan->send_queue;
487 packet->sender = sender;
489 packet->sent_cb = sent_cb;
490 memcpy(packet->data, buf, size);
491 sender->vlan->send_queue = packet;
494 ssize_t qemu_send_packet_async(VLANClientState *sender,
495 const uint8_t *buf, int size,
496 NetPacketSent *sent_cb)
500 if (sender->link_down) {
505 printf("vlan %d send:\n", sender->vlan->id);
506 hex_dump(stdout, buf, size);
509 if (sender->vlan->delivering) {
510 qemu_enqueue_packet(sender, buf, size, NULL);
514 ret = qemu_deliver_packet(sender, buf, size);
515 if (ret == 0 && sent_cb != NULL) {
516 qemu_enqueue_packet(sender, buf, size, sent_cb);
520 qemu_flush_queued_packets(sender);
525 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
527 qemu_send_packet_async(vc, buf, size, NULL);
530 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
533 uint8_t buffer[4096];
537 for (i = 0; i < iovcnt; i++) {
540 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
541 memcpy(buffer + offset, iov[i].iov_base, len);
545 return vc->receive(vc, buffer, offset);
548 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
553 for (i = 0; i < iovcnt; i++)
554 offset += iov[i].iov_len;
558 static int qemu_deliver_packet_iov(VLANClientState *sender,
559 const struct iovec *iov, int iovcnt)
564 sender->vlan->delivering = 1;
566 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
574 ret = calc_iov_length(iov, iovcnt);
578 if (vc->receive_iov) {
579 len = vc->receive_iov(vc, iov, iovcnt);
581 len = vc_sendv_compat(vc, iov, iovcnt);
584 ret = (ret >= 0) ? ret : len;
587 sender->vlan->delivering = 0;
592 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
593 const struct iovec *iov, int iovcnt,
594 NetPacketSent *sent_cb)
600 max_len = calc_iov_length(iov, iovcnt);
602 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
603 packet->next = sender->vlan->send_queue;
604 packet->sender = sender;
605 packet->sent_cb = sent_cb;
608 for (i = 0; i < iovcnt; i++) {
609 size_t len = iov[i].iov_len;
611 memcpy(packet->data + packet->size, iov[i].iov_base, len);
615 sender->vlan->send_queue = packet;
620 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
621 const struct iovec *iov, int iovcnt,
622 NetPacketSent *sent_cb)
626 if (sender->link_down) {
627 return calc_iov_length(iov, iovcnt);
630 if (sender->vlan->delivering) {
631 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
634 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
635 if (ret == 0 && sent_cb != NULL) {
636 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
640 qemu_flush_queued_packets(sender);
646 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
648 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
651 static void config_error(Monitor *mon, const char *fmt, ...)
657 monitor_vprintf(mon, fmt, ap);
659 fprintf(stderr, "qemu: ");
660 vfprintf(stderr, fmt, ap);
666 #if defined(CONFIG_SLIRP)
668 /* slirp network adapter */
670 #define SLIRP_CFG_HOSTFWD 1
671 #define SLIRP_CFG_LEGACY 2
673 struct slirp_config_str {
674 struct slirp_config_str *next;
680 typedef struct SlirpState {
685 static struct slirp_config_str *slirp_configs;
686 const char *legacy_tftp_prefix;
687 const char *legacy_bootp_filename;
688 static SlirpState *slirp_state;
690 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
692 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
696 static const char *legacy_smb_export;
698 static void slirp_smb(SlirpState *s, const char *exported_dir,
699 struct in_addr vserver_addr);
702 int slirp_can_output(void *opaque)
704 SlirpState *s = opaque;
706 return qemu_can_send_packet(s->vc);
709 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
711 SlirpState *s = opaque;
714 printf("slirp output:\n");
715 hex_dump(stdout, pkt, pkt_len);
717 qemu_send_packet(s->vc, pkt, pkt_len);
720 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
722 SlirpState *s = vc->opaque;
725 printf("slirp input:\n");
726 hex_dump(stdout, buf, size);
728 slirp_input(s->slirp, buf, size);
732 static int slirp_in_use;
734 static void net_slirp_cleanup(VLANClientState *vc)
739 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
740 const char *name, int restricted,
741 const char *vnetwork, const char *vhost,
742 const char *vhostname, const char *tftp_export,
743 const char *bootfile, const char *vdhcp_start,
744 const char *vnameserver, const char *smb_export,
745 const char *vsmbserver)
747 SlirpState *s = slirp_state;
750 /* slirp only supports a single instance so far */
754 /* default settings according to historic slirp */
755 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
756 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
757 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
758 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
759 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
761 struct in_addr smbsrv = { .s_addr = 0 };
769 tftp_export = legacy_tftp_prefix;
772 bootfile = legacy_bootp_filename;
776 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
777 if (!inet_aton(vnetwork, &net)) {
780 addr = ntohl(net.s_addr);
781 if (!(addr & 0x80000000)) {
782 mask.s_addr = htonl(0xff000000); /* class A */
783 } else if ((addr & 0xfff00000) == 0xac100000) {
784 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
785 } else if ((addr & 0xc0000000) == 0x80000000) {
786 mask.s_addr = htonl(0xffff0000); /* class B */
787 } else if ((addr & 0xffff0000) == 0xc0a80000) {
788 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
789 } else if ((addr & 0xffff0000) == 0xc6120000) {
790 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
791 } else if ((addr & 0xe0000000) == 0xe0000000) {
792 mask.s_addr = htonl(0xffffff00); /* class C */
794 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
797 if (!inet_aton(buf, &net)) {
800 shift = strtol(vnetwork, &end, 10);
802 if (!inet_aton(vnetwork, &mask)) {
805 } else if (shift < 4 || shift > 32) {
808 mask.s_addr = htonl(0xffffffff << (32 - shift));
811 net.s_addr &= mask.s_addr;
812 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
813 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
814 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
817 if (vhost && !inet_aton(vhost, &host)) {
820 if ((host.s_addr & mask.s_addr) != net.s_addr) {
824 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
827 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
828 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
832 if (vnameserver && !inet_aton(vnameserver, &dns)) {
835 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
836 dns.s_addr == host.s_addr) {
841 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
846 s = qemu_mallocz(sizeof(SlirpState));
847 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
848 tftp_export, bootfile, dhcp, dns, s);
851 while (slirp_configs) {
852 struct slirp_config_str *config = slirp_configs;
854 if (config->flags & SLIRP_CFG_HOSTFWD) {
855 slirp_hostfwd(s, mon, config->str,
856 config->flags & SLIRP_CFG_LEGACY);
858 slirp_guestfwd(s, mon, config->str,
859 config->flags & SLIRP_CFG_LEGACY);
861 slirp_configs = config->next;
866 smb_export = legacy_smb_export;
869 slirp_smb(s, smb_export, smbsrv);
874 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
875 net_slirp_cleanup, s);
876 s->vc->info_str[0] = '\0';
881 void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
883 struct in_addr host_addr = { .s_addr = INADDR_ANY };
886 const char *p = src_str;
891 monitor_printf(mon, "user mode network stack not in use\n");
895 if (!src_str || !src_str[0])
898 get_str_sep(buf, sizeof(buf), &p, ':');
900 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
902 } else if (!strcmp(buf, "udp")) {
908 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
911 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
917 err = slirp_remove_hostfwd(slirp_state->slirp, is_udp,
918 host_addr, host_port);
920 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
921 err ? "removed" : "not found");
925 monitor_printf(mon, "invalid format\n");
928 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
931 struct in_addr host_addr = { .s_addr = INADDR_ANY };
932 struct in_addr guest_addr = { .s_addr = 0 };
933 int host_port, guest_port;
940 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
943 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
945 } else if (!strcmp(buf, "udp")) {
951 if (!legacy_format) {
952 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
955 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
960 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
963 host_port = strtol(buf, &end, 0);
964 if (*end != '\0' || host_port < 1 || host_port > 65535) {
968 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
971 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
975 guest_port = strtol(p, &end, 0);
976 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
980 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
982 config_error(mon, "could not set up host forwarding rule '%s'\n",
988 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
991 void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
994 monitor_printf(mon, "user mode network stack not in use\n");
998 slirp_hostfwd(slirp_state, mon, redir_str, 0);
1001 void net_slirp_redir(const char *redir_str)
1003 struct slirp_config_str *config;
1006 config = qemu_malloc(sizeof(*config));
1007 pstrcpy(config->str, sizeof(config->str), redir_str);
1008 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1009 config->next = slirp_configs;
1010 slirp_configs = config;
1014 slirp_hostfwd(slirp_state, NULL, redir_str, 1);
1019 static char smb_dir[1024];
1021 static void erase_dir(char *dir_name)
1025 char filename[1024];
1027 /* erase all the files in the directory */
1028 if ((d = opendir(dir_name)) != NULL) {
1033 if (strcmp(de->d_name, ".") != 0 &&
1034 strcmp(de->d_name, "..") != 0) {
1035 snprintf(filename, sizeof(filename), "%s/%s",
1036 smb_dir, de->d_name);
1037 if (unlink(filename) != 0) /* is it a directory? */
1038 erase_dir(filename);
1046 /* automatic user mode samba server configuration */
1047 static void smb_exit(void)
1052 static void slirp_smb(SlirpState* s, const char *exported_dir,
1053 struct in_addr vserver_addr)
1055 char smb_conf[1024];
1056 char smb_cmdline[1024];
1059 /* XXX: better tmp dir construction */
1060 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
1061 if (mkdir(smb_dir, 0700) < 0) {
1062 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
1065 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
1067 f = fopen(smb_conf, "w");
1069 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
1076 "socket address=127.0.0.1\n"
1077 "pid directory=%s\n"
1078 "lock directory=%s\n"
1079 "log file=%s/log.smbd\n"
1080 "smb passwd file=%s/smbpasswd\n"
1081 "security = share\n"
1096 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1097 SMBD_COMMAND, smb_conf);
1099 if (slirp_add_exec(s->slirp, 0, smb_cmdline, vserver_addr, 139) < 0) {
1100 fprintf(stderr, "conflicting/invalid smbserver address\n");
1105 /* automatic user mode samba server configuration (legacy interface) */
1106 void net_slirp_smb(const char *exported_dir)
1108 struct in_addr vserver_addr = { .s_addr = 0 };
1110 if (legacy_smb_export) {
1111 fprintf(stderr, "-smb given twice\n");
1114 legacy_smb_export = exported_dir;
1116 slirp_smb(slirp_state, exported_dir, vserver_addr);
1120 #endif /* !defined(_WIN32) */
1123 CharDriverState *hd;
1124 struct in_addr server;
1129 static int guestfwd_can_read(void *opaque)
1131 struct GuestFwd *fwd = opaque;
1132 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1135 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1137 struct GuestFwd *fwd = opaque;
1138 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1141 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1144 struct in_addr server = { .s_addr = 0 };
1145 struct GuestFwd *fwd;
1152 if (legacy_format) {
1153 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1157 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1160 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1163 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1166 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1169 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1173 port = strtol(buf, &end, 10);
1174 if (*end != '\0' || port < 1 || port > 65535) {
1178 fwd = qemu_malloc(sizeof(struct GuestFwd));
1179 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1180 fwd->hd = qemu_chr_open(buf, p, NULL);
1182 config_error(mon, "could not open guest forwarding device '%s'\n",
1187 fwd->server = server;
1189 fwd->slirp = s->slirp;
1191 if (slirp_add_exec(s->slirp, 3, fwd->hd, server, port) < 0) {
1192 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1193 "rule '%s'\n", config_str);
1197 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1202 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1205 void do_info_usernet(Monitor *mon)
1207 SlirpState *s = slirp_state;
1212 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1213 slirp_connection_info(s->slirp, mon);
1216 #endif /* CONFIG_SLIRP */
1218 #if !defined(_WIN32)
1220 typedef struct TAPState {
1221 VLANClientState *vc;
1223 char down_script[1024];
1224 char down_script_arg[128];
1226 unsigned int read_poll : 1;
1227 unsigned int write_poll : 1;
1230 static int launch_script(const char *setup_script, const char *ifname, int fd);
1232 static int tap_can_send(void *opaque);
1233 static void tap_send(void *opaque);
1234 static void tap_writable(void *opaque);
1236 static void tap_update_fd_handler(TAPState *s)
1238 qemu_set_fd_handler2(s->fd,
1239 s->read_poll ? tap_can_send : NULL,
1240 s->read_poll ? tap_send : NULL,
1241 s->write_poll ? tap_writable : NULL,
1245 static void tap_read_poll(TAPState *s, int enable)
1247 s->read_poll = !!enable;
1248 tap_update_fd_handler(s);
1251 static void tap_write_poll(TAPState *s, int enable)
1253 s->write_poll = !!enable;
1254 tap_update_fd_handler(s);
1257 static void tap_writable(void *opaque)
1259 TAPState *s = opaque;
1261 tap_write_poll(s, 0);
1263 qemu_flush_queued_packets(s->vc);
1266 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1269 TAPState *s = vc->opaque;
1273 len = writev(s->fd, iov, iovcnt);
1274 } while (len == -1 && errno == EINTR);
1276 if (len == -1 && errno == EAGAIN) {
1277 tap_write_poll(s, 1);
1284 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1286 TAPState *s = vc->opaque;
1290 len = write(s->fd, buf, size);
1291 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1296 static int tap_can_send(void *opaque)
1298 TAPState *s = opaque;
1300 return qemu_can_send_packet(s->vc);
1304 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1309 sbuf.maxlen = maxlen;
1310 sbuf.buf = (char *)buf;
1312 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1315 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1317 return read(tapfd, buf, maxlen);
1321 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1323 TAPState *s = vc->opaque;
1324 tap_read_poll(s, 1);
1327 static void tap_send(void *opaque)
1329 TAPState *s = opaque;
1333 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1338 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1340 tap_read_poll(s, 0);
1345 static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1348 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1349 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1353 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1357 static void tap_cleanup(VLANClientState *vc)
1359 TAPState *s = vc->opaque;
1361 qemu_purge_queued_packets(vc);
1363 if (s->down_script[0])
1364 launch_script(s->down_script, s->down_script_arg, s->fd);
1366 tap_read_poll(s, 0);
1367 tap_write_poll(s, 0);
1374 static TAPState *net_tap_fd_init(VLANState *vlan,
1381 s = qemu_mallocz(sizeof(TAPState));
1383 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1384 tap_receive_iov, tap_cleanup, s);
1385 tap_read_poll(s, 1);
1386 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1390 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1391 static int tap_open(char *ifname, int ifname_size)
1397 TFR(fd = open("/dev/tap", O_RDWR));
1399 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1404 dev = devname(s.st_rdev, S_IFCHR);
1405 pstrcpy(ifname, ifname_size, dev);
1407 fcntl(fd, F_SETFL, O_NONBLOCK);
1410 #elif defined(__sun__)
1411 #define TUNNEWPPA (('T'<<16) | 0x0001)
1413 * Allocate TAP device, returns opened fd.
1414 * Stores dev name in the first arg(must be large enough).
1416 static int tap_alloc(char *dev, size_t dev_size)
1418 int tap_fd, if_fd, ppa = -1;
1419 static int ip_fd = 0;
1422 static int arp_fd = 0;
1423 int ip_muxid, arp_muxid;
1424 struct strioctl strioc_if, strioc_ppa;
1425 int link_type = I_PLINK;;
1427 char actual_name[32] = "";
1429 memset(&ifr, 0x0, sizeof(ifr));
1433 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1437 /* Check if IP device was opened */
1441 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1443 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1447 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1449 syslog(LOG_ERR, "Can't open /dev/tap");
1453 /* Assign a new PPA and get its unit number. */
1454 strioc_ppa.ic_cmd = TUNNEWPPA;
1455 strioc_ppa.ic_timout = 0;
1456 strioc_ppa.ic_len = sizeof(ppa);
1457 strioc_ppa.ic_dp = (char *)&ppa;
1458 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1459 syslog (LOG_ERR, "Can't assign new interface");
1461 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1463 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1466 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1467 syslog(LOG_ERR, "Can't push IP module");
1471 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1472 syslog(LOG_ERR, "Can't get flags\n");
1474 snprintf (actual_name, 32, "tap%d", ppa);
1475 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1478 /* Assign ppa according to the unit number returned by tun device */
1480 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1481 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1482 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1483 syslog (LOG_ERR, "Can't get flags\n");
1484 /* Push arp module to if_fd */
1485 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1486 syslog (LOG_ERR, "Can't push ARP module (2)");
1488 /* Push arp module to ip_fd */
1489 if (ioctl (ip_fd, I_POP, NULL) < 0)
1490 syslog (LOG_ERR, "I_POP failed\n");
1491 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1492 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1494 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1496 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1498 /* Set ifname to arp */
1499 strioc_if.ic_cmd = SIOCSLIFNAME;
1500 strioc_if.ic_timout = 0;
1501 strioc_if.ic_len = sizeof(ifr);
1502 strioc_if.ic_dp = (char *)𝔦
1503 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1504 syslog (LOG_ERR, "Can't set ifname to arp\n");
1507 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1508 syslog(LOG_ERR, "Can't link TAP device to IP");
1512 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1513 syslog (LOG_ERR, "Can't link TAP device to ARP");
1517 memset(&ifr, 0x0, sizeof(ifr));
1518 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1519 ifr.lifr_ip_muxid = ip_muxid;
1520 ifr.lifr_arp_muxid = arp_muxid;
1522 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1524 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1525 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1526 syslog (LOG_ERR, "Can't set multiplexor id");
1529 snprintf(dev, dev_size, "tap%d", ppa);
1533 static int tap_open(char *ifname, int ifname_size)
1537 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1538 fprintf(stderr, "Cannot allocate TAP device\n");
1541 pstrcpy(ifname, ifname_size, dev);
1542 fcntl(fd, F_SETFL, O_NONBLOCK);
1545 #elif defined (_AIX)
1546 static int tap_open(char *ifname, int ifname_size)
1548 fprintf (stderr, "no tap on AIX\n");
1552 static int tap_open(char *ifname, int ifname_size)
1557 TFR(fd = open("/dev/net/tun", O_RDWR));
1559 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1562 memset(&ifr, 0, sizeof(ifr));
1563 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1564 if (ifname[0] != '\0')
1565 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1567 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1568 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1570 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1574 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1575 fcntl(fd, F_SETFL, O_NONBLOCK);
1580 static int launch_script(const char *setup_script, const char *ifname, int fd)
1582 sigset_t oldmask, mask;
1588 sigaddset(&mask, SIGCHLD);
1589 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1591 /* try to launch network script */
1594 int open_max = sysconf(_SC_OPEN_MAX), i;
1596 for (i = 0; i < open_max; i++) {
1597 if (i != STDIN_FILENO &&
1598 i != STDOUT_FILENO &&
1599 i != STDERR_FILENO &&
1605 *parg++ = (char *)setup_script;
1606 *parg++ = (char *)ifname;
1608 execv(setup_script, args);
1610 } else if (pid > 0) {
1611 while (waitpid(pid, &status, 0) != pid) {
1614 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1616 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1620 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1624 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1625 const char *name, const char *ifname1,
1626 const char *setup_script, const char *down_script)
1632 if (ifname1 != NULL)
1633 pstrcpy(ifname, sizeof(ifname), ifname1);
1636 TFR(fd = tap_open(ifname, sizeof(ifname)));
1640 if (!setup_script || !strcmp(setup_script, "no"))
1642 if (setup_script[0] != '\0' &&
1643 launch_script(setup_script, ifname, fd)) {
1646 s = net_tap_fd_init(vlan, model, name, fd);
1647 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1648 "ifname=%s,script=%s,downscript=%s",
1649 ifname, setup_script, down_script);
1650 if (down_script && strcmp(down_script, "no")) {
1651 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1652 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1657 #endif /* !_WIN32 */
1659 #if defined(CONFIG_VDE)
1660 typedef struct VDEState {
1661 VLANClientState *vc;
1665 static void vde_to_qemu(void *opaque)
1667 VDEState *s = opaque;
1671 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1673 qemu_send_packet(s->vc, buf, size);
1677 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1679 VDEState *s = vc->opaque;
1683 ret = vde_send(s->vde, (const char *)buf, size, 0);
1684 } while (ret < 0 && errno == EINTR);
1689 static void vde_cleanup(VLANClientState *vc)
1691 VDEState *s = vc->opaque;
1692 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1697 static int net_vde_init(VLANState *vlan, const char *model,
1698 const char *name, const char *sock,
1699 int port, const char *group, int mode)
1702 char *init_group = strlen(group) ? (char *)group : NULL;
1703 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1705 struct vde_open_args args = {
1707 .group = init_group,
1711 s = qemu_mallocz(sizeof(VDEState));
1712 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1717 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1718 NULL, vde_cleanup, s);
1719 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1720 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1721 sock, vde_datafd(s->vde));
1726 /* network connection */
1727 typedef struct NetSocketState {
1728 VLANClientState *vc;
1730 int state; /* 0 = getting length, 1 = getting data */
1732 unsigned int packet_len;
1734 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1737 typedef struct NetSocketListenState {
1742 } NetSocketListenState;
1744 /* XXX: we consider we can send the whole packet without blocking */
1745 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1747 NetSocketState *s = vc->opaque;
1751 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1752 return send_all(s->fd, buf, size);
1755 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1757 NetSocketState *s = vc->opaque;
1759 return sendto(s->fd, (const void *)buf, size, 0,
1760 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1763 static void net_socket_send(void *opaque)
1765 NetSocketState *s = opaque;
1771 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1773 err = socket_error();
1774 if (err != EWOULDBLOCK)
1776 } else if (size == 0) {
1777 /* end of connection */
1779 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1785 /* reassemble a packet from the network */
1791 memcpy(s->buf + s->index, buf, l);
1795 if (s->index == 4) {
1797 s->packet_len = ntohl(*(uint32_t *)s->buf);
1803 l = s->packet_len - s->index;
1806 if (s->index + l <= sizeof(s->buf)) {
1807 memcpy(s->buf + s->index, buf, l);
1809 fprintf(stderr, "serious error: oversized packet received,"
1810 "connection terminated.\n");
1818 if (s->index >= s->packet_len) {
1819 qemu_send_packet(s->vc, s->buf, s->packet_len);
1828 static void net_socket_send_dgram(void *opaque)
1830 NetSocketState *s = opaque;
1833 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1837 /* end of connection */
1838 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1841 qemu_send_packet(s->vc, s->buf, size);
1844 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1849 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1850 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1851 inet_ntoa(mcastaddr->sin_addr),
1852 (int)ntohl(mcastaddr->sin_addr.s_addr));
1856 fd = socket(PF_INET, SOCK_DGRAM, 0);
1858 perror("socket(PF_INET, SOCK_DGRAM)");
1863 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1864 (const char *)&val, sizeof(val));
1866 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1870 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1876 /* Add host to multicast group */
1877 imr.imr_multiaddr = mcastaddr->sin_addr;
1878 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1880 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1881 (const char *)&imr, sizeof(struct ip_mreq));
1883 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1887 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1889 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1890 (const char *)&val, sizeof(val));
1892 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1896 socket_set_nonblock(fd);
1904 static void net_socket_cleanup(VLANClientState *vc)
1906 NetSocketState *s = vc->opaque;
1907 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1912 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1915 int fd, int is_connected)
1917 struct sockaddr_in saddr;
1919 socklen_t saddr_len;
1922 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1923 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1924 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1928 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1930 if (saddr.sin_addr.s_addr==0) {
1931 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1935 /* clone dgram socket */
1936 newfd = net_socket_mcast_create(&saddr);
1938 /* error already reported by net_socket_mcast_create() */
1942 /* clone newfd to fd, close newfd */
1947 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1948 fd, strerror(errno));
1953 s = qemu_mallocz(sizeof(NetSocketState));
1956 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1957 NULL, net_socket_cleanup, s);
1958 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1960 /* mcast: save bound address as dst */
1961 if (is_connected) s->dgram_dst=saddr;
1963 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1964 "socket: fd=%d (%s mcast=%s:%d)",
1965 fd, is_connected? "cloned" : "",
1966 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1970 static void net_socket_connect(void *opaque)
1972 NetSocketState *s = opaque;
1973 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1976 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1979 int fd, int is_connected)
1982 s = qemu_mallocz(sizeof(NetSocketState));
1984 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1985 NULL, net_socket_cleanup, s);
1986 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1987 "socket: fd=%d", fd);
1989 net_socket_connect(s);
1991 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1996 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1997 const char *model, const char *name,
1998 int fd, int is_connected)
2000 int so_type=-1, optlen=sizeof(so_type);
2002 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
2003 (socklen_t *)&optlen)< 0) {
2004 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2009 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2011 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2013 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2014 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2015 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2020 static void net_socket_accept(void *opaque)
2022 NetSocketListenState *s = opaque;
2024 struct sockaddr_in saddr;
2029 len = sizeof(saddr);
2030 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2031 if (fd < 0 && errno != EINTR) {
2033 } else if (fd >= 0) {
2037 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2041 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2042 "socket: connection from %s:%d",
2043 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2047 static int net_socket_listen_init(VLANState *vlan,
2050 const char *host_str)
2052 NetSocketListenState *s;
2054 struct sockaddr_in saddr;
2056 if (parse_host_port(&saddr, host_str) < 0)
2059 s = qemu_mallocz(sizeof(NetSocketListenState));
2061 fd = socket(PF_INET, SOCK_STREAM, 0);
2066 socket_set_nonblock(fd);
2068 /* allow fast reuse */
2070 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2072 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2077 ret = listen(fd, 0);
2083 s->model = strdup(model);
2084 s->name = name ? strdup(name) : NULL;
2086 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2090 static int net_socket_connect_init(VLANState *vlan,
2093 const char *host_str)
2096 int fd, connected, ret, err;
2097 struct sockaddr_in saddr;
2099 if (parse_host_port(&saddr, host_str) < 0)
2102 fd = socket(PF_INET, SOCK_STREAM, 0);
2107 socket_set_nonblock(fd);
2111 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2113 err = socket_error();
2114 if (err == EINTR || err == EWOULDBLOCK) {
2115 } else if (err == EINPROGRESS) {
2118 } else if (err == WSAEALREADY) {
2131 s = net_socket_fd_init(vlan, model, name, fd, connected);
2134 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2135 "socket: connect to %s:%d",
2136 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2140 static int net_socket_mcast_init(VLANState *vlan,
2143 const char *host_str)
2147 struct sockaddr_in saddr;
2149 if (parse_host_port(&saddr, host_str) < 0)
2153 fd = net_socket_mcast_create(&saddr);
2157 s = net_socket_fd_init(vlan, model, name, fd, 0);
2161 s->dgram_dst = saddr;
2163 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2164 "socket: mcast=%s:%d",
2165 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2170 typedef struct DumpState {
2171 VLANClientState *pcap_vc;
2176 #define PCAP_MAGIC 0xa1b2c3d4
2178 struct pcap_file_hdr {
2180 uint16_t version_major;
2181 uint16_t version_minor;
2188 struct pcap_sf_pkthdr {
2197 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2199 DumpState *s = vc->opaque;
2200 struct pcap_sf_pkthdr hdr;
2204 /* Early return in case of previous error. */
2209 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2210 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2212 hdr.ts.tv_sec = ts / 1000000;
2213 hdr.ts.tv_usec = ts % 1000000;
2214 hdr.caplen = caplen;
2216 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2217 write(s->fd, buf, caplen) != caplen) {
2218 qemu_log("-net dump write error - stop dump\n");
2226 static void net_dump_cleanup(VLANClientState *vc)
2228 DumpState *s = vc->opaque;
2234 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2235 const char *name, const char *filename, int len)
2237 struct pcap_file_hdr hdr;
2240 s = qemu_malloc(sizeof(DumpState));
2242 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2244 config_error(mon, "-net dump: can't open %s\n", filename);
2248 s->pcap_caplen = len;
2250 hdr.magic = PCAP_MAGIC;
2251 hdr.version_major = 2;
2252 hdr.version_minor = 4;
2255 hdr.snaplen = s->pcap_caplen;
2258 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2259 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2265 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2266 net_dump_cleanup, s);
2267 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2268 "dump to %s (len=%d)", filename, len);
2272 /* find or alloc a new VLAN */
2273 VLANState *qemu_find_vlan(int id)
2275 VLANState **pvlan, *vlan;
2276 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2280 vlan = qemu_mallocz(sizeof(VLANState));
2283 pvlan = &first_vlan;
2284 while (*pvlan != NULL)
2285 pvlan = &(*pvlan)->next;
2290 static int nic_get_free_idx(void)
2294 for (index = 0; index < MAX_NICS; index++)
2295 if (!nd_table[index].used)
2300 void qemu_check_nic_model(NICInfo *nd, const char *model)
2302 const char *models[2];
2307 qemu_check_nic_model_list(nd, models, model);
2310 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2311 const char *default_model)
2313 int i, exit_status = 0;
2316 nd->model = strdup(default_model);
2318 if (strcmp(nd->model, "?") != 0) {
2319 for (i = 0 ; models[i]; i++)
2320 if (strcmp(nd->model, models[i]) == 0)
2323 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2327 fprintf(stderr, "qemu: Supported NIC models: ");
2328 for (i = 0 ; models[i]; i++)
2329 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2334 int net_client_init(Monitor *mon, const char *device, const char *p)
2342 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2343 vlan_id = strtol(buf, NULL, 0);
2345 vlan = qemu_find_vlan(vlan_id);
2347 if (get_param_value(buf, sizeof(buf), "name", p)) {
2348 name = qemu_strdup(buf);
2350 if (!strcmp(device, "nic")) {
2351 static const char * const nic_params[] = {
2352 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
2356 int idx = nic_get_free_idx();
2358 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2359 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2363 if (idx == -1 || nb_nics >= MAX_NICS) {
2364 config_error(mon, "Too Many NICs\n");
2368 nd = &nd_table[idx];
2369 macaddr = nd->macaddr;
2375 macaddr[5] = 0x56 + idx;
2377 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2378 if (parse_macaddr(macaddr, buf) < 0) {
2379 config_error(mon, "invalid syntax for ethernet address\n");
2384 if (get_param_value(buf, sizeof(buf), "model", p)) {
2385 nd->model = strdup(buf);
2387 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2388 nd->devaddr = strdup(buf);
2390 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2391 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2393 long vectors = strtol(buf, &endptr, 0);
2395 config_error(mon, "invalid syntax for # of vectors\n");
2399 if (vectors < 0 || vectors > 0x7ffffff) {
2400 config_error(mon, "invalid # of vectors\n");
2404 nd->nvectors = vectors;
2411 vlan->nb_guest_devs++;
2414 if (!strcmp(device, "none")) {
2416 config_error(mon, "'none' takes no parameters\n");
2420 /* does nothing. It is needed to signal that no network cards
2425 if (!strcmp(device, "user")) {
2426 static const char * const slirp_params[] = {
2427 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2428 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2429 "hostfwd", "guestfwd", NULL
2431 struct slirp_config_str *config;
2435 char *vhostname = NULL;
2436 char *tftp_export = NULL;
2437 char *bootfile = NULL;
2438 char *vdhcp_start = NULL;
2439 char *vnamesrv = NULL;
2440 char *smb_export = NULL;
2441 char *vsmbsrv = NULL;
2444 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2445 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2449 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2450 /* emulate legacy parameter */
2451 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2453 strcat(vnet, "/24");
2455 if (get_param_value(buf, sizeof(buf), "net", p)) {
2456 vnet = qemu_strdup(buf);
2458 if (get_param_value(buf, sizeof(buf), "host", p)) {
2459 vhost = qemu_strdup(buf);
2461 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2462 vhostname = qemu_strdup(buf);
2464 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2465 restricted = (buf[0] == 'y') ? 1 : 0;
2467 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2468 vdhcp_start = qemu_strdup(buf);
2470 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2471 vnamesrv = qemu_strdup(buf);
2473 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2474 tftp_export = qemu_strdup(buf);
2476 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2477 bootfile = qemu_strdup(buf);
2479 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2480 smb_export = qemu_strdup(buf);
2481 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2482 vsmbsrv = qemu_strdup(buf);
2487 config = qemu_malloc(sizeof(*config));
2488 if (!get_next_param_value(config->str, sizeof(config->str),
2492 config->flags = SLIRP_CFG_HOSTFWD;
2493 config->next = slirp_configs;
2494 slirp_configs = config;
2499 config = qemu_malloc(sizeof(*config));
2500 if (!get_next_param_value(config->str, sizeof(config->str),
2505 config->next = slirp_configs;
2506 slirp_configs = config;
2510 vlan->nb_host_devs++;
2511 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2512 vhostname, tftp_export, bootfile, vdhcp_start,
2513 vnamesrv, smb_export, vsmbsrv);
2516 qemu_free(vhostname);
2517 qemu_free(tftp_export);
2518 qemu_free(bootfile);
2519 qemu_free(vdhcp_start);
2520 qemu_free(vnamesrv);
2521 qemu_free(smb_export);
2523 } else if (!strcmp(device, "channel")) {
2525 struct slirp_config_str *config;
2527 config = qemu_malloc(sizeof(*config));
2528 pstrcpy(config->str, sizeof(config->str), p);
2529 config->flags = SLIRP_CFG_LEGACY;
2530 config->next = slirp_configs;
2531 slirp_configs = config;
2533 slirp_guestfwd(slirp_state, mon, p, 1);
2539 if (!strcmp(device, "tap")) {
2540 static const char * const tap_params[] = {
2541 "vlan", "name", "ifname", NULL
2545 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2546 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2550 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2551 config_error(mon, "tap: no interface name\n");
2555 vlan->nb_host_devs++;
2556 ret = tap_win32_init(vlan, device, name, ifname);
2558 #elif defined (_AIX)
2560 if (!strcmp(device, "tap")) {
2561 char ifname[64], chkbuf[64];
2562 char setup_script[1024], down_script[1024];
2565 vlan->nb_host_devs++;
2566 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2567 static const char * const fd_params[] = {
2568 "vlan", "name", "fd", "sndbuf", NULL
2570 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2571 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2575 fd = strtol(buf, NULL, 0);
2576 fcntl(fd, F_SETFL, O_NONBLOCK);
2577 s = net_tap_fd_init(vlan, device, name, fd);
2579 static const char * const tap_params[] = {
2580 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2582 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2583 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2587 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2590 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2591 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2593 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2594 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2596 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2599 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2600 tap_set_sndbuf(s, atoi(buf), mon);
2608 if (!strcmp(device, "socket")) {
2610 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2611 static const char * const fd_params[] = {
2612 "vlan", "name", "fd", NULL
2615 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2616 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2620 fd = strtol(buf, NULL, 0);
2622 if (net_socket_fd_init(vlan, device, name, fd, 1))
2624 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2625 static const char * const listen_params[] = {
2626 "vlan", "name", "listen", NULL
2628 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2629 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2633 ret = net_socket_listen_init(vlan, device, name, buf);
2634 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2635 static const char * const connect_params[] = {
2636 "vlan", "name", "connect", NULL
2638 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2639 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2643 ret = net_socket_connect_init(vlan, device, name, buf);
2644 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2645 static const char * const mcast_params[] = {
2646 "vlan", "name", "mcast", NULL
2648 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2649 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2653 ret = net_socket_mcast_init(vlan, device, name, buf);
2655 config_error(mon, "Unknown socket options: %s\n", p);
2659 vlan->nb_host_devs++;
2662 if (!strcmp(device, "vde")) {
2663 static const char * const vde_params[] = {
2664 "vlan", "name", "sock", "port", "group", "mode", NULL
2666 char vde_sock[1024], vde_group[512];
2667 int vde_port, vde_mode;
2669 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2670 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2674 vlan->nb_host_devs++;
2675 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2678 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2679 vde_port = strtol(buf, NULL, 10);
2683 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2684 vde_group[0] = '\0';
2686 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2687 vde_mode = strtol(buf, NULL, 8);
2691 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2694 if (!strcmp(device, "dump")) {
2697 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2698 len = strtol(buf, NULL, 0);
2700 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2701 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2703 ret = net_dump_init(mon, vlan, device, name, buf, len);
2705 config_error(mon, "Unknown network device: %s\n", device);
2710 config_error(mon, "Could not initialize device '%s'\n", device);
2717 void net_client_uninit(NICInfo *nd)
2719 nd->vlan->nb_guest_devs--;
2722 free((void *)nd->model);
2725 static int net_host_check_device(const char *device)
2728 const char *valid_param_list[] = { "tap", "socket", "dump"
2736 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2737 if (!strncmp(valid_param_list[i], device,
2738 strlen(valid_param_list[i])))
2745 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2747 if (!net_host_check_device(device)) {
2748 monitor_printf(mon, "invalid host network device %s\n", device);
2751 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2752 monitor_printf(mon, "adding host network device %s failed\n", device);
2756 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2759 VLANClientState *vc;
2761 vlan = qemu_find_vlan(vlan_id);
2763 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2764 if (!strcmp(vc->name, device)) {
2770 monitor_printf(mon, "can't find device %s\n", device);
2773 if (!net_host_check_device(vc->model)) {
2774 monitor_printf(mon, "invalid host network device %s\n", device);
2777 qemu_del_vlan_client(vc);
2780 int net_client_parse(const char *str)
2788 while (*p != '\0' && *p != ',') {
2789 if ((q - device) < sizeof(device) - 1)
2797 return net_client_init(NULL, device, p);
2800 void net_set_boot_mask(int net_boot_mask)
2804 /* Only the first four NICs may be bootable */
2805 net_boot_mask = net_boot_mask & 0xF;
2807 for (i = 0; i < nb_nics; i++) {
2808 if (net_boot_mask & (1 << i)) {
2809 nd_table[i].bootable = 1;
2810 net_boot_mask &= ~(1 << i);
2814 if (net_boot_mask) {
2815 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2820 void do_info_network(Monitor *mon)
2823 VLANClientState *vc;
2825 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2826 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2827 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2828 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2832 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2835 VLANClientState *vc = NULL;
2837 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2838 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2839 if (strcmp(vc->name, name) == 0)
2844 monitor_printf(mon, "could not find network device '%s'", name);
2848 if (strcmp(up_or_down, "up") == 0)
2850 else if (strcmp(up_or_down, "down") == 0)
2853 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2854 "valid\n", up_or_down);
2856 if (vc->link_status_changed)
2857 vc->link_status_changed(vc);
2862 void net_cleanup(void)
2866 /* close network clients */
2867 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2868 VLANClientState *vc = vlan->first_client;
2871 VLANClientState *next = vc->next;
2873 qemu_del_vlan_client(vc);
2880 void net_client_check(void)
2884 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2885 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2887 if (vlan->nb_guest_devs == 0)
2888 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2889 if (vlan->nb_host_devs == 0)
2891 "Warning: vlan %d is not connected to host network\n",