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 #if defined(CONFIG_SLIRP)
124 #include "libslirp.h"
128 static VLANState *first_vlan;
130 /***********************************************************/
131 /* network device redirectors */
133 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
134 static void hex_dump(FILE *f, const uint8_t *buf, int size)
138 for(i=0;i<size;i+=16) {
142 fprintf(f, "%08x ", i);
145 fprintf(f, " %02x", buf[i+j]);
152 if (c < ' ' || c > '~')
161 static int parse_macaddr(uint8_t *macaddr, const char *p)
168 offset = strtol(p, &last_char, 0);
169 if (0 == errno && '\0' == *last_char &&
170 offset >= 0 && offset <= 0xFFFFFF) {
171 macaddr[3] = (offset & 0xFF0000) >> 16;
172 macaddr[4] = (offset & 0xFF00) >> 8;
173 macaddr[5] = offset & 0xFF;
176 for(i = 0; i < 6; i++) {
177 macaddr[i] = strtol(p, (char **)&p, 16);
182 if (*p != ':' && *p != '-')
193 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
204 if (len > buf_size - 1)
213 int parse_host_src_port(struct sockaddr_in *haddr,
214 struct sockaddr_in *saddr,
215 const char *input_str)
217 char *str = strdup(input_str);
218 char *host_str = str;
220 const char *src_str2;
224 * Chop off any extra arguments at the end of the string which
225 * would start with a comma, then fill in the src port information
226 * if it was provided else use the "any address" and "any port".
228 if ((ptr = strchr(str,',')))
231 if ((src_str = strchr(input_str,'@'))) {
236 if (parse_host_port(haddr, host_str) < 0)
240 if (!src_str || *src_str == '\0')
243 if (parse_host_port(saddr, src_str2) < 0)
254 int parse_host_port(struct sockaddr_in *saddr, const char *str)
262 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
264 saddr->sin_family = AF_INET;
265 if (buf[0] == '\0') {
266 saddr->sin_addr.s_addr = 0;
268 if (qemu_isdigit(buf[0])) {
269 if (!inet_aton(buf, &saddr->sin_addr))
272 if ((he = gethostbyname(buf)) == NULL)
274 saddr->sin_addr = *(struct in_addr *)he->h_addr;
277 port = strtol(p, (char **)&r, 0);
280 saddr->sin_port = htons(port);
284 #if !defined(_WIN32) && 0
285 static int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
290 len = MIN(108, strlen(str));
291 p = strchr(str, ',');
293 len = MIN(len, p - str);
295 memset(uaddr, 0, sizeof(*uaddr));
297 uaddr->sun_family = AF_UNIX;
298 memcpy(uaddr->sun_path, str, len);
304 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
306 snprintf(vc->info_str, sizeof(vc->info_str),
307 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
309 macaddr[0], macaddr[1], macaddr[2],
310 macaddr[3], macaddr[4], macaddr[5]);
313 static char *assign_name(VLANClientState *vc1, const char *model)
319 for (vlan = first_vlan; vlan; vlan = vlan->next) {
322 for (vc = vlan->first_client; vc; vc = vc->next)
323 if (vc != vc1 && strcmp(vc->model, model) == 0)
327 snprintf(buf, sizeof(buf), "%s.%d", model, id);
332 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
335 NetCanReceive *can_receive,
337 NetReceiveIOV *receive_iov,
341 VLANClientState *vc, **pvc;
342 vc = qemu_mallocz(sizeof(VLANClientState));
343 vc->model = strdup(model);
345 vc->name = strdup(name);
347 vc->name = assign_name(vc, model);
348 vc->can_receive = can_receive;
349 vc->receive = receive;
350 vc->receive_iov = receive_iov;
351 vc->cleanup = cleanup;
356 pvc = &vlan->first_client;
363 void qemu_del_vlan_client(VLANClientState *vc)
365 VLANClientState **pvc = &vc->vlan->first_client;
381 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
383 VLANClientState **pvc = &vlan->first_client;
386 if ((*pvc)->opaque == opaque)
394 int qemu_can_send_packet(VLANClientState *sender)
396 VLANState *vlan = sender->vlan;
399 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
404 /* no can_receive() handler, they can always receive */
405 if (!vc->can_receive || vc->can_receive(vc)) {
413 qemu_deliver_packet(VLANClientState *sender, const uint8_t *buf, int size)
418 sender->vlan->delivering = 1;
420 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
432 len = vc->receive(vc, buf, size);
434 ret = (ret >= 0) ? ret : len;
437 sender->vlan->delivering = 0;
442 void qemu_purge_queued_packets(VLANClientState *vc)
444 VLANPacket **pp = &vc->vlan->send_queue;
446 while (*pp != NULL) {
447 VLANPacket *packet = *pp;
449 if (packet->sender == vc) {
458 void qemu_flush_queued_packets(VLANClientState *vc)
462 while ((packet = vc->vlan->send_queue) != NULL) {
465 vc->vlan->send_queue = packet->next;
467 ret = qemu_deliver_packet(packet->sender, packet->data, packet->size);
468 if (ret == 0 && packet->sent_cb != NULL) {
469 packet->next = vc->vlan->send_queue;
470 vc->vlan->send_queue = packet;
475 packet->sent_cb(packet->sender, ret);
481 static void qemu_enqueue_packet(VLANClientState *sender,
482 const uint8_t *buf, int size,
483 NetPacketSent *sent_cb)
487 packet = qemu_malloc(sizeof(VLANPacket) + size);
488 packet->next = sender->vlan->send_queue;
489 packet->sender = sender;
491 packet->sent_cb = sent_cb;
492 memcpy(packet->data, buf, size);
493 sender->vlan->send_queue = packet;
496 ssize_t qemu_send_packet_async(VLANClientState *sender,
497 const uint8_t *buf, int size,
498 NetPacketSent *sent_cb)
502 if (sender->link_down) {
507 printf("vlan %d send:\n", sender->vlan->id);
508 hex_dump(stdout, buf, size);
511 if (sender->vlan->delivering) {
512 qemu_enqueue_packet(sender, buf, size, NULL);
516 ret = qemu_deliver_packet(sender, buf, size);
517 if (ret == 0 && sent_cb != NULL) {
518 qemu_enqueue_packet(sender, buf, size, sent_cb);
522 qemu_flush_queued_packets(sender);
527 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
529 qemu_send_packet_async(vc, buf, size, NULL);
532 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
535 uint8_t buffer[4096];
539 for (i = 0; i < iovcnt; i++) {
542 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
543 memcpy(buffer + offset, iov[i].iov_base, len);
547 return vc->receive(vc, buffer, offset);
550 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
555 for (i = 0; i < iovcnt; i++)
556 offset += iov[i].iov_len;
560 static int qemu_deliver_packet_iov(VLANClientState *sender,
561 const struct iovec *iov, int iovcnt)
566 sender->vlan->delivering = 1;
568 for (vc = sender->vlan->first_client; vc != NULL; vc = vc->next) {
576 ret = calc_iov_length(iov, iovcnt);
580 if (vc->receive_iov) {
581 len = vc->receive_iov(vc, iov, iovcnt);
583 len = vc_sendv_compat(vc, iov, iovcnt);
586 ret = (ret >= 0) ? ret : len;
589 sender->vlan->delivering = 0;
594 static ssize_t qemu_enqueue_packet_iov(VLANClientState *sender,
595 const struct iovec *iov, int iovcnt,
596 NetPacketSent *sent_cb)
602 max_len = calc_iov_length(iov, iovcnt);
604 packet = qemu_malloc(sizeof(VLANPacket) + max_len);
605 packet->next = sender->vlan->send_queue;
606 packet->sender = sender;
607 packet->sent_cb = sent_cb;
610 for (i = 0; i < iovcnt; i++) {
611 size_t len = iov[i].iov_len;
613 memcpy(packet->data + packet->size, iov[i].iov_base, len);
617 sender->vlan->send_queue = packet;
622 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
623 const struct iovec *iov, int iovcnt,
624 NetPacketSent *sent_cb)
628 if (sender->link_down) {
629 return calc_iov_length(iov, iovcnt);
632 if (sender->vlan->delivering) {
633 return qemu_enqueue_packet_iov(sender, iov, iovcnt, NULL);
636 ret = qemu_deliver_packet_iov(sender, iov, iovcnt);
637 if (ret == 0 && sent_cb != NULL) {
638 qemu_enqueue_packet_iov(sender, iov, iovcnt, sent_cb);
642 qemu_flush_queued_packets(sender);
648 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
650 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
653 static void config_error(Monitor *mon, const char *fmt, ...)
659 monitor_vprintf(mon, fmt, ap);
661 fprintf(stderr, "qemu: ");
662 vfprintf(stderr, fmt, ap);
668 #if defined(CONFIG_SLIRP)
670 /* slirp network adapter */
672 #define SLIRP_CFG_HOSTFWD 1
673 #define SLIRP_CFG_LEGACY 2
675 struct slirp_config_str {
676 struct slirp_config_str *next;
682 static int slirp_inited;
683 static struct slirp_config_str *slirp_configs;
684 const char *legacy_tftp_prefix;
685 const char *legacy_bootp_filename;
686 static VLANClientState *slirp_vc;
688 static void slirp_hostfwd(Monitor *mon, const char *redir_str,
690 static void slirp_guestfwd(Monitor *mon, const char *config_str,
694 static const char *legacy_smb_export;
696 static void slirp_smb(const char *exported_dir, struct in_addr vserver_addr);
699 int slirp_can_output(void)
701 return !slirp_vc || qemu_can_send_packet(slirp_vc);
704 void slirp_output(const uint8_t *pkt, int pkt_len)
707 printf("slirp output:\n");
708 hex_dump(stdout, pkt, pkt_len);
712 qemu_send_packet(slirp_vc, pkt, pkt_len);
715 int slirp_is_inited(void)
720 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
723 printf("slirp input:\n");
724 hex_dump(stdout, buf, size);
726 slirp_input(buf, size);
730 static int slirp_in_use;
732 static void net_slirp_cleanup(VLANClientState *vc)
737 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
738 const char *name, int restricted,
739 const char *vnetwork, const char *vhost,
740 const char *vhostname, const char *tftp_export,
741 const char *bootfile, const char *vdhcp_start,
742 const char *vnameserver, const char *smb_export,
743 const char *vsmbserver)
746 /* slirp only supports a single instance so far */
750 /* default settings according to historic slirp */
751 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
752 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
753 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
754 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
755 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
757 struct in_addr smbsrv = { .s_addr = 0 };
765 tftp_export = legacy_tftp_prefix;
768 bootfile = legacy_bootp_filename;
772 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
773 if (!inet_aton(vnetwork, &net)) {
776 addr = ntohl(net.s_addr);
777 if (!(addr & 0x80000000)) {
778 mask.s_addr = htonl(0xff000000); /* class A */
779 } else if ((addr & 0xfff00000) == 0xac100000) {
780 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
781 } else if ((addr & 0xc0000000) == 0x80000000) {
782 mask.s_addr = htonl(0xffff0000); /* class B */
783 } else if ((addr & 0xffff0000) == 0xc0a80000) {
784 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
785 } else if ((addr & 0xffff0000) == 0xc6120000) {
786 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
787 } else if ((addr & 0xe0000000) == 0xe0000000) {
788 mask.s_addr = htonl(0xffffff00); /* class C */
790 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
793 if (!inet_aton(buf, &net)) {
796 shift = strtol(vnetwork, &end, 10);
798 if (!inet_aton(vnetwork, &mask)) {
801 } else if (shift < 4 || shift > 32) {
804 mask.s_addr = htonl(0xffffffff << (32 - shift));
807 net.s_addr &= mask.s_addr;
808 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
809 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
810 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
813 if (vhost && !inet_aton(vhost, &host)) {
816 if ((host.s_addr & mask.s_addr) != net.s_addr) {
820 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
823 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
824 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
828 if (vnameserver && !inet_aton(vnameserver, &dns)) {
831 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
832 dns.s_addr == host.s_addr) {
837 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
842 slirp_init(restricted, net, mask, host, vhostname, tftp_export,
843 bootfile, dhcp, dns);
846 while (slirp_configs) {
847 struct slirp_config_str *config = slirp_configs;
849 if (config->flags & SLIRP_CFG_HOSTFWD) {
850 slirp_hostfwd(mon, config->str,
851 config->flags & SLIRP_CFG_LEGACY);
853 slirp_guestfwd(mon, config->str,
854 config->flags & SLIRP_CFG_LEGACY);
856 slirp_configs = config->next;
861 smb_export = legacy_smb_export;
864 slirp_smb(smb_export, smbsrv);
869 slirp_vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive,
870 NULL, net_slirp_cleanup, NULL);
871 slirp_vc->info_str[0] = '\0';
876 void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
878 struct in_addr host_addr = { .s_addr = INADDR_ANY };
881 const char *p = src_str;
886 monitor_printf(mon, "user mode network stack not in use\n");
890 if (!src_str || !src_str[0])
893 get_str_sep(buf, sizeof(buf), &p, ':');
895 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
897 } else if (!strcmp(buf, "udp")) {
903 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
906 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
912 err = slirp_remove_hostfwd(is_udp, host_addr, host_port);
914 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
915 err ? "removed" : "not found");
919 monitor_printf(mon, "invalid format\n");
922 static void slirp_hostfwd(Monitor *mon, const char *redir_str,
925 struct in_addr host_addr = { .s_addr = INADDR_ANY };
926 struct in_addr guest_addr = { .s_addr = 0 };
927 int host_port, guest_port;
934 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
937 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
939 } else if (!strcmp(buf, "udp")) {
945 if (!legacy_format) {
946 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
949 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
954 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
957 host_port = strtol(buf, &end, 0);
958 if (*end != '\0' || host_port < 1 || host_port > 65535) {
962 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
965 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
969 guest_port = strtol(p, &end, 0);
970 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
974 if (slirp_add_hostfwd(is_udp, host_addr, host_port,
975 guest_addr, guest_port) < 0) {
976 config_error(mon, "could not set up host forwarding rule '%s'\n",
982 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
985 void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
988 monitor_printf(mon, "user mode network stack not in use\n");
992 slirp_hostfwd(mon, redir_str, 0);
995 void net_slirp_redir(const char *redir_str)
997 struct slirp_config_str *config;
1000 config = qemu_malloc(sizeof(*config));
1001 pstrcpy(config->str, sizeof(config->str), redir_str);
1002 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1003 config->next = slirp_configs;
1004 slirp_configs = config;
1008 slirp_hostfwd(NULL, redir_str, 1);
1013 static char smb_dir[1024];
1015 static void erase_dir(char *dir_name)
1019 char filename[1024];
1021 /* erase all the files in the directory */
1022 if ((d = opendir(dir_name)) != NULL) {
1027 if (strcmp(de->d_name, ".") != 0 &&
1028 strcmp(de->d_name, "..") != 0) {
1029 snprintf(filename, sizeof(filename), "%s/%s",
1030 smb_dir, de->d_name);
1031 if (unlink(filename) != 0) /* is it a directory? */
1032 erase_dir(filename);
1040 /* automatic user mode samba server configuration */
1041 static void smb_exit(void)
1046 static void slirp_smb(const char *exported_dir, struct in_addr vserver_addr)
1048 char smb_conf[1024];
1049 char smb_cmdline[1024];
1052 /* XXX: better tmp dir construction */
1053 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
1054 if (mkdir(smb_dir, 0700) < 0) {
1055 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
1058 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
1060 f = fopen(smb_conf, "w");
1062 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
1069 "socket address=127.0.0.1\n"
1070 "pid directory=%s\n"
1071 "lock directory=%s\n"
1072 "log file=%s/log.smbd\n"
1073 "smb passwd file=%s/smbpasswd\n"
1074 "security = share\n"
1089 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1090 SMBD_COMMAND, smb_conf);
1092 if (slirp_add_exec(0, smb_cmdline, vserver_addr, 139) < 0) {
1093 fprintf(stderr, "conflicting/invalid smbserver address\n");
1098 /* automatic user mode samba server configuration (legacy interface) */
1099 void net_slirp_smb(const char *exported_dir)
1101 struct in_addr vserver_addr = { .s_addr = 0 };
1103 if (legacy_smb_export) {
1104 fprintf(stderr, "-smb given twice\n");
1107 legacy_smb_export = exported_dir;
1109 slirp_smb(exported_dir, vserver_addr);
1113 #endif /* !defined(_WIN32) */
1115 void do_info_slirp(Monitor *mon)
1121 CharDriverState *hd;
1122 struct in_addr server;
1126 static int guestfwd_can_read(void *opaque)
1128 struct GuestFwd *fwd = opaque;
1129 return slirp_socket_can_recv(fwd->server, fwd->port);
1132 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1134 struct GuestFwd *fwd = opaque;
1135 slirp_socket_recv(fwd->server, fwd->port, buf, size);
1138 static void slirp_guestfwd(Monitor *mon, const char *config_str,
1141 struct in_addr server = { .s_addr = 0 };
1142 struct GuestFwd *fwd;
1149 if (legacy_format) {
1150 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1154 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1157 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1160 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1163 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1166 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1170 port = strtol(buf, &end, 10);
1171 if (*end != '\0' || port < 1 || port > 65535) {
1175 fwd = qemu_malloc(sizeof(struct GuestFwd));
1176 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1177 fwd->hd = qemu_chr_open(buf, p, NULL);
1179 config_error(mon, "could not open guest forwarding device '%s'\n",
1184 fwd->server = server;
1187 if (slirp_add_exec(3, fwd->hd, server, port) < 0) {
1188 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1189 "rule '%s'\n", config_str);
1193 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1198 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1201 void do_info_usernet(Monitor *mon)
1203 monitor_printf(mon, "VLAN %d (%s):\n", slirp_vc->vlan->id, slirp_vc->name);
1204 slirp_connection_info(mon);
1207 #endif /* CONFIG_SLIRP */
1209 #if !defined(_WIN32)
1211 typedef struct TAPState {
1212 VLANClientState *vc;
1214 char down_script[1024];
1215 char down_script_arg[128];
1217 unsigned int read_poll : 1;
1218 unsigned int write_poll : 1;
1221 static int launch_script(const char *setup_script, const char *ifname, int fd);
1223 static int tap_can_send(void *opaque);
1224 static void tap_send(void *opaque);
1225 static void tap_writable(void *opaque);
1227 static void tap_update_fd_handler(TAPState *s)
1229 qemu_set_fd_handler2(s->fd,
1230 s->read_poll ? tap_can_send : NULL,
1231 s->read_poll ? tap_send : NULL,
1232 s->write_poll ? tap_writable : NULL,
1236 static void tap_read_poll(TAPState *s, int enable)
1238 s->read_poll = !!enable;
1239 tap_update_fd_handler(s);
1242 static void tap_write_poll(TAPState *s, int enable)
1244 s->write_poll = !!enable;
1245 tap_update_fd_handler(s);
1248 static void tap_writable(void *opaque)
1250 TAPState *s = opaque;
1252 tap_write_poll(s, 0);
1254 qemu_flush_queued_packets(s->vc);
1257 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1260 TAPState *s = vc->opaque;
1264 len = writev(s->fd, iov, iovcnt);
1265 } while (len == -1 && errno == EINTR);
1267 if (len == -1 && errno == EAGAIN) {
1268 tap_write_poll(s, 1);
1275 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1277 TAPState *s = vc->opaque;
1281 len = write(s->fd, buf, size);
1282 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1287 static int tap_can_send(void *opaque)
1289 TAPState *s = opaque;
1291 return qemu_can_send_packet(s->vc);
1295 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1300 sbuf.maxlen = maxlen;
1301 sbuf.buf = (char *)buf;
1303 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1306 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1308 return read(tapfd, buf, maxlen);
1312 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1314 TAPState *s = vc->opaque;
1315 tap_read_poll(s, 1);
1318 static void tap_send(void *opaque)
1320 TAPState *s = opaque;
1324 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1329 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1331 tap_read_poll(s, 0);
1336 static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1339 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1340 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1344 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1348 static void tap_cleanup(VLANClientState *vc)
1350 TAPState *s = vc->opaque;
1352 qemu_purge_queued_packets(vc);
1354 if (s->down_script[0])
1355 launch_script(s->down_script, s->down_script_arg, s->fd);
1357 tap_read_poll(s, 0);
1358 tap_write_poll(s, 0);
1365 static TAPState *net_tap_fd_init(VLANState *vlan,
1372 s = qemu_mallocz(sizeof(TAPState));
1374 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1375 tap_receive_iov, tap_cleanup, s);
1376 tap_read_poll(s, 1);
1377 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1381 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1382 static int tap_open(char *ifname, int ifname_size)
1388 TFR(fd = open("/dev/tap", O_RDWR));
1390 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1395 dev = devname(s.st_rdev, S_IFCHR);
1396 pstrcpy(ifname, ifname_size, dev);
1398 fcntl(fd, F_SETFL, O_NONBLOCK);
1401 #elif defined(__sun__)
1402 #define TUNNEWPPA (('T'<<16) | 0x0001)
1404 * Allocate TAP device, returns opened fd.
1405 * Stores dev name in the first arg(must be large enough).
1407 static int tap_alloc(char *dev, size_t dev_size)
1409 int tap_fd, if_fd, ppa = -1;
1410 static int ip_fd = 0;
1413 static int arp_fd = 0;
1414 int ip_muxid, arp_muxid;
1415 struct strioctl strioc_if, strioc_ppa;
1416 int link_type = I_PLINK;;
1418 char actual_name[32] = "";
1420 memset(&ifr, 0x0, sizeof(ifr));
1424 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1428 /* Check if IP device was opened */
1432 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1434 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1438 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1440 syslog(LOG_ERR, "Can't open /dev/tap");
1444 /* Assign a new PPA and get its unit number. */
1445 strioc_ppa.ic_cmd = TUNNEWPPA;
1446 strioc_ppa.ic_timout = 0;
1447 strioc_ppa.ic_len = sizeof(ppa);
1448 strioc_ppa.ic_dp = (char *)&ppa;
1449 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1450 syslog (LOG_ERR, "Can't assign new interface");
1452 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1454 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1457 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1458 syslog(LOG_ERR, "Can't push IP module");
1462 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1463 syslog(LOG_ERR, "Can't get flags\n");
1465 snprintf (actual_name, 32, "tap%d", ppa);
1466 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1469 /* Assign ppa according to the unit number returned by tun device */
1471 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1472 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1473 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1474 syslog (LOG_ERR, "Can't get flags\n");
1475 /* Push arp module to if_fd */
1476 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1477 syslog (LOG_ERR, "Can't push ARP module (2)");
1479 /* Push arp module to ip_fd */
1480 if (ioctl (ip_fd, I_POP, NULL) < 0)
1481 syslog (LOG_ERR, "I_POP failed\n");
1482 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1483 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1485 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1487 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1489 /* Set ifname to arp */
1490 strioc_if.ic_cmd = SIOCSLIFNAME;
1491 strioc_if.ic_timout = 0;
1492 strioc_if.ic_len = sizeof(ifr);
1493 strioc_if.ic_dp = (char *)𝔦
1494 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1495 syslog (LOG_ERR, "Can't set ifname to arp\n");
1498 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1499 syslog(LOG_ERR, "Can't link TAP device to IP");
1503 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1504 syslog (LOG_ERR, "Can't link TAP device to ARP");
1508 memset(&ifr, 0x0, sizeof(ifr));
1509 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1510 ifr.lifr_ip_muxid = ip_muxid;
1511 ifr.lifr_arp_muxid = arp_muxid;
1513 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1515 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1516 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1517 syslog (LOG_ERR, "Can't set multiplexor id");
1520 snprintf(dev, dev_size, "tap%d", ppa);
1524 static int tap_open(char *ifname, int ifname_size)
1528 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1529 fprintf(stderr, "Cannot allocate TAP device\n");
1532 pstrcpy(ifname, ifname_size, dev);
1533 fcntl(fd, F_SETFL, O_NONBLOCK);
1536 #elif defined (_AIX)
1537 static int tap_open(char *ifname, int ifname_size)
1539 fprintf (stderr, "no tap on AIX\n");
1543 static int tap_open(char *ifname, int ifname_size)
1548 TFR(fd = open("/dev/net/tun", O_RDWR));
1550 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1553 memset(&ifr, 0, sizeof(ifr));
1554 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1555 if (ifname[0] != '\0')
1556 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1558 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1559 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1561 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1565 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1566 fcntl(fd, F_SETFL, O_NONBLOCK);
1571 static int launch_script(const char *setup_script, const char *ifname, int fd)
1573 sigset_t oldmask, mask;
1579 sigaddset(&mask, SIGCHLD);
1580 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1582 /* try to launch network script */
1585 int open_max = sysconf(_SC_OPEN_MAX), i;
1587 for (i = 0; i < open_max; i++) {
1588 if (i != STDIN_FILENO &&
1589 i != STDOUT_FILENO &&
1590 i != STDERR_FILENO &&
1596 *parg++ = (char *)setup_script;
1597 *parg++ = (char *)ifname;
1599 execv(setup_script, args);
1601 } else if (pid > 0) {
1602 while (waitpid(pid, &status, 0) != pid) {
1605 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1607 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1611 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1615 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1616 const char *name, const char *ifname1,
1617 const char *setup_script, const char *down_script)
1623 if (ifname1 != NULL)
1624 pstrcpy(ifname, sizeof(ifname), ifname1);
1627 TFR(fd = tap_open(ifname, sizeof(ifname)));
1631 if (!setup_script || !strcmp(setup_script, "no"))
1633 if (setup_script[0] != '\0' &&
1634 launch_script(setup_script, ifname, fd)) {
1637 s = net_tap_fd_init(vlan, model, name, fd);
1638 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1639 "ifname=%s,script=%s,downscript=%s",
1640 ifname, setup_script, down_script);
1641 if (down_script && strcmp(down_script, "no")) {
1642 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1643 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1648 #endif /* !_WIN32 */
1650 #if defined(CONFIG_VDE)
1651 typedef struct VDEState {
1652 VLANClientState *vc;
1656 static void vde_to_qemu(void *opaque)
1658 VDEState *s = opaque;
1662 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1664 qemu_send_packet(s->vc, buf, size);
1668 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1670 VDEState *s = vc->opaque;
1674 ret = vde_send(s->vde, (const char *)buf, size, 0);
1675 } while (ret < 0 && errno == EINTR);
1680 static void vde_cleanup(VLANClientState *vc)
1682 VDEState *s = vc->opaque;
1683 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1688 static int net_vde_init(VLANState *vlan, const char *model,
1689 const char *name, const char *sock,
1690 int port, const char *group, int mode)
1693 char *init_group = strlen(group) ? (char *)group : NULL;
1694 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1696 struct vde_open_args args = {
1698 .group = init_group,
1702 s = qemu_mallocz(sizeof(VDEState));
1703 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1708 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1709 NULL, vde_cleanup, s);
1710 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1711 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1712 sock, vde_datafd(s->vde));
1717 /* network connection */
1718 typedef struct NetSocketState {
1719 VLANClientState *vc;
1721 int state; /* 0 = getting length, 1 = getting data */
1723 unsigned int packet_len;
1725 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1728 typedef struct NetSocketListenState {
1733 } NetSocketListenState;
1735 /* XXX: we consider we can send the whole packet without blocking */
1736 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1738 NetSocketState *s = vc->opaque;
1742 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1743 return send_all(s->fd, buf, size);
1746 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1748 NetSocketState *s = vc->opaque;
1750 return sendto(s->fd, (const void *)buf, size, 0,
1751 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1754 static void net_socket_send(void *opaque)
1756 NetSocketState *s = opaque;
1762 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1764 err = socket_error();
1765 if (err != EWOULDBLOCK)
1767 } else if (size == 0) {
1768 /* end of connection */
1770 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1776 /* reassemble a packet from the network */
1782 memcpy(s->buf + s->index, buf, l);
1786 if (s->index == 4) {
1788 s->packet_len = ntohl(*(uint32_t *)s->buf);
1794 l = s->packet_len - s->index;
1797 if (s->index + l <= sizeof(s->buf)) {
1798 memcpy(s->buf + s->index, buf, l);
1800 fprintf(stderr, "serious error: oversized packet received,"
1801 "connection terminated.\n");
1809 if (s->index >= s->packet_len) {
1810 qemu_send_packet(s->vc, s->buf, s->packet_len);
1819 static void net_socket_send_dgram(void *opaque)
1821 NetSocketState *s = opaque;
1824 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1828 /* end of connection */
1829 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1832 qemu_send_packet(s->vc, s->buf, size);
1835 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1840 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1841 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1842 inet_ntoa(mcastaddr->sin_addr),
1843 (int)ntohl(mcastaddr->sin_addr.s_addr));
1847 fd = socket(PF_INET, SOCK_DGRAM, 0);
1849 perror("socket(PF_INET, SOCK_DGRAM)");
1854 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1855 (const char *)&val, sizeof(val));
1857 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1861 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1867 /* Add host to multicast group */
1868 imr.imr_multiaddr = mcastaddr->sin_addr;
1869 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1871 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1872 (const char *)&imr, sizeof(struct ip_mreq));
1874 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1878 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1880 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1881 (const char *)&val, sizeof(val));
1883 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1887 socket_set_nonblock(fd);
1895 static void net_socket_cleanup(VLANClientState *vc)
1897 NetSocketState *s = vc->opaque;
1898 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1903 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1906 int fd, int is_connected)
1908 struct sockaddr_in saddr;
1910 socklen_t saddr_len;
1913 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1914 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1915 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1919 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1921 if (saddr.sin_addr.s_addr==0) {
1922 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1926 /* clone dgram socket */
1927 newfd = net_socket_mcast_create(&saddr);
1929 /* error already reported by net_socket_mcast_create() */
1933 /* clone newfd to fd, close newfd */
1938 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1939 fd, strerror(errno));
1944 s = qemu_mallocz(sizeof(NetSocketState));
1947 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1948 NULL, net_socket_cleanup, s);
1949 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1951 /* mcast: save bound address as dst */
1952 if (is_connected) s->dgram_dst=saddr;
1954 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1955 "socket: fd=%d (%s mcast=%s:%d)",
1956 fd, is_connected? "cloned" : "",
1957 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1961 static void net_socket_connect(void *opaque)
1963 NetSocketState *s = opaque;
1964 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1967 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1970 int fd, int is_connected)
1973 s = qemu_mallocz(sizeof(NetSocketState));
1975 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1976 NULL, net_socket_cleanup, s);
1977 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1978 "socket: fd=%d", fd);
1980 net_socket_connect(s);
1982 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1987 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1988 const char *model, const char *name,
1989 int fd, int is_connected)
1991 int so_type=-1, optlen=sizeof(so_type);
1993 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1994 (socklen_t *)&optlen)< 0) {
1995 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
2000 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
2002 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2004 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
2005 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
2006 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
2011 static void net_socket_accept(void *opaque)
2013 NetSocketListenState *s = opaque;
2015 struct sockaddr_in saddr;
2020 len = sizeof(saddr);
2021 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2022 if (fd < 0 && errno != EINTR) {
2024 } else if (fd >= 0) {
2028 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2032 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2033 "socket: connection from %s:%d",
2034 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2038 static int net_socket_listen_init(VLANState *vlan,
2041 const char *host_str)
2043 NetSocketListenState *s;
2045 struct sockaddr_in saddr;
2047 if (parse_host_port(&saddr, host_str) < 0)
2050 s = qemu_mallocz(sizeof(NetSocketListenState));
2052 fd = socket(PF_INET, SOCK_STREAM, 0);
2057 socket_set_nonblock(fd);
2059 /* allow fast reuse */
2061 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2063 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2068 ret = listen(fd, 0);
2074 s->model = strdup(model);
2075 s->name = name ? strdup(name) : NULL;
2077 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2081 static int net_socket_connect_init(VLANState *vlan,
2084 const char *host_str)
2087 int fd, connected, ret, err;
2088 struct sockaddr_in saddr;
2090 if (parse_host_port(&saddr, host_str) < 0)
2093 fd = socket(PF_INET, SOCK_STREAM, 0);
2098 socket_set_nonblock(fd);
2102 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2104 err = socket_error();
2105 if (err == EINTR || err == EWOULDBLOCK) {
2106 } else if (err == EINPROGRESS) {
2109 } else if (err == WSAEALREADY) {
2122 s = net_socket_fd_init(vlan, model, name, fd, connected);
2125 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2126 "socket: connect to %s:%d",
2127 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2131 static int net_socket_mcast_init(VLANState *vlan,
2134 const char *host_str)
2138 struct sockaddr_in saddr;
2140 if (parse_host_port(&saddr, host_str) < 0)
2144 fd = net_socket_mcast_create(&saddr);
2148 s = net_socket_fd_init(vlan, model, name, fd, 0);
2152 s->dgram_dst = saddr;
2154 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2155 "socket: mcast=%s:%d",
2156 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2161 typedef struct DumpState {
2162 VLANClientState *pcap_vc;
2167 #define PCAP_MAGIC 0xa1b2c3d4
2169 struct pcap_file_hdr {
2171 uint16_t version_major;
2172 uint16_t version_minor;
2179 struct pcap_sf_pkthdr {
2188 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2190 DumpState *s = vc->opaque;
2191 struct pcap_sf_pkthdr hdr;
2195 /* Early return in case of previous error. */
2200 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2201 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2203 hdr.ts.tv_sec = ts / 1000000;
2204 hdr.ts.tv_usec = ts % 1000000;
2205 hdr.caplen = caplen;
2207 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2208 write(s->fd, buf, caplen) != caplen) {
2209 qemu_log("-net dump write error - stop dump\n");
2217 static void net_dump_cleanup(VLANClientState *vc)
2219 DumpState *s = vc->opaque;
2225 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2226 const char *name, const char *filename, int len)
2228 struct pcap_file_hdr hdr;
2231 s = qemu_malloc(sizeof(DumpState));
2233 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2235 config_error(mon, "-net dump: can't open %s\n", filename);
2239 s->pcap_caplen = len;
2241 hdr.magic = PCAP_MAGIC;
2242 hdr.version_major = 2;
2243 hdr.version_minor = 4;
2246 hdr.snaplen = s->pcap_caplen;
2249 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2250 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2256 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2257 net_dump_cleanup, s);
2258 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2259 "dump to %s (len=%d)", filename, len);
2263 /* find or alloc a new VLAN */
2264 VLANState *qemu_find_vlan(int id)
2266 VLANState **pvlan, *vlan;
2267 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2271 vlan = qemu_mallocz(sizeof(VLANState));
2274 pvlan = &first_vlan;
2275 while (*pvlan != NULL)
2276 pvlan = &(*pvlan)->next;
2281 static int nic_get_free_idx(void)
2285 for (index = 0; index < MAX_NICS; index++)
2286 if (!nd_table[index].used)
2291 void qemu_check_nic_model(NICInfo *nd, const char *model)
2293 const char *models[2];
2298 qemu_check_nic_model_list(nd, models, model);
2301 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2302 const char *default_model)
2304 int i, exit_status = 0;
2307 nd->model = strdup(default_model);
2309 if (strcmp(nd->model, "?") != 0) {
2310 for (i = 0 ; models[i]; i++)
2311 if (strcmp(nd->model, models[i]) == 0)
2314 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2318 fprintf(stderr, "qemu: Supported NIC models: ");
2319 for (i = 0 ; models[i]; i++)
2320 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2325 int net_client_init(Monitor *mon, const char *device, const char *p)
2333 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2334 vlan_id = strtol(buf, NULL, 0);
2336 vlan = qemu_find_vlan(vlan_id);
2338 if (get_param_value(buf, sizeof(buf), "name", p)) {
2339 name = qemu_strdup(buf);
2341 if (!strcmp(device, "nic")) {
2342 static const char * const nic_params[] = {
2343 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
2347 int idx = nic_get_free_idx();
2349 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2350 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2354 if (idx == -1 || nb_nics >= MAX_NICS) {
2355 config_error(mon, "Too Many NICs\n");
2359 nd = &nd_table[idx];
2360 macaddr = nd->macaddr;
2366 macaddr[5] = 0x56 + idx;
2368 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2369 if (parse_macaddr(macaddr, buf) < 0) {
2370 config_error(mon, "invalid syntax for ethernet address\n");
2375 if (get_param_value(buf, sizeof(buf), "model", p)) {
2376 nd->model = strdup(buf);
2378 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2379 nd->devaddr = strdup(buf);
2381 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2382 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2384 long vectors = strtol(buf, &endptr, 0);
2386 config_error(mon, "invalid syntax for # of vectors\n");
2390 if (vectors < 0 || vectors > 0x7ffffff) {
2391 config_error(mon, "invalid # of vectors\n");
2395 nd->nvectors = vectors;
2402 vlan->nb_guest_devs++;
2405 if (!strcmp(device, "none")) {
2407 config_error(mon, "'none' takes no parameters\n");
2411 /* does nothing. It is needed to signal that no network cards
2416 if (!strcmp(device, "user")) {
2417 static const char * const slirp_params[] = {
2418 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2419 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2420 "hostfwd", "guestfwd", NULL
2422 struct slirp_config_str *config;
2426 char *vhostname = NULL;
2427 char *tftp_export = NULL;
2428 char *bootfile = NULL;
2429 char *vdhcp_start = NULL;
2430 char *vnamesrv = NULL;
2431 char *smb_export = NULL;
2432 char *vsmbsrv = NULL;
2435 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2436 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2440 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2441 /* emulate legacy parameter */
2442 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2444 strcat(vnet, "/24");
2446 if (get_param_value(buf, sizeof(buf), "net", p)) {
2447 vnet = qemu_strdup(buf);
2449 if (get_param_value(buf, sizeof(buf), "host", p)) {
2450 vhost = qemu_strdup(buf);
2452 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2453 vhostname = qemu_strdup(buf);
2455 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2456 restricted = (buf[0] == 'y') ? 1 : 0;
2458 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2459 vdhcp_start = qemu_strdup(buf);
2461 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2462 vnamesrv = qemu_strdup(buf);
2464 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2465 tftp_export = qemu_strdup(buf);
2467 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2468 bootfile = qemu_strdup(buf);
2470 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2471 smb_export = qemu_strdup(buf);
2472 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2473 vsmbsrv = qemu_strdup(buf);
2478 config = qemu_malloc(sizeof(*config));
2479 if (!get_next_param_value(config->str, sizeof(config->str),
2483 config->flags = SLIRP_CFG_HOSTFWD;
2484 config->next = slirp_configs;
2485 slirp_configs = config;
2490 config = qemu_malloc(sizeof(*config));
2491 if (!get_next_param_value(config->str, sizeof(config->str),
2496 config->next = slirp_configs;
2497 slirp_configs = config;
2501 vlan->nb_host_devs++;
2502 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2503 vhostname, tftp_export, bootfile, vdhcp_start,
2504 vnamesrv, smb_export, vsmbsrv);
2507 qemu_free(vhostname);
2508 qemu_free(tftp_export);
2509 qemu_free(bootfile);
2510 qemu_free(vdhcp_start);
2511 qemu_free(vnamesrv);
2512 qemu_free(smb_export);
2514 } else if (!strcmp(device, "channel")) {
2515 if (!slirp_inited) {
2516 struct slirp_config_str *config;
2518 config = qemu_malloc(sizeof(*config));
2519 pstrcpy(config->str, sizeof(config->str), p);
2520 config->flags = SLIRP_CFG_LEGACY;
2521 config->next = slirp_configs;
2522 slirp_configs = config;
2524 slirp_guestfwd(mon, p, 1);
2530 if (!strcmp(device, "tap")) {
2531 static const char * const tap_params[] = {
2532 "vlan", "name", "ifname", NULL
2536 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2537 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2541 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2542 config_error(mon, "tap: no interface name\n");
2546 vlan->nb_host_devs++;
2547 ret = tap_win32_init(vlan, device, name, ifname);
2549 #elif defined (_AIX)
2551 if (!strcmp(device, "tap")) {
2552 char ifname[64], chkbuf[64];
2553 char setup_script[1024], down_script[1024];
2556 vlan->nb_host_devs++;
2557 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2558 static const char * const fd_params[] = {
2559 "vlan", "name", "fd", "sndbuf", NULL
2561 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2562 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2566 fd = strtol(buf, NULL, 0);
2567 fcntl(fd, F_SETFL, O_NONBLOCK);
2568 s = net_tap_fd_init(vlan, device, name, fd);
2570 static const char * const tap_params[] = {
2571 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2573 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2574 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2578 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2581 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2582 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2584 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2585 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2587 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2590 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2591 tap_set_sndbuf(s, atoi(buf), mon);
2599 if (!strcmp(device, "socket")) {
2601 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2602 static const char * const fd_params[] = {
2603 "vlan", "name", "fd", NULL
2606 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2607 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2611 fd = strtol(buf, NULL, 0);
2613 if (net_socket_fd_init(vlan, device, name, fd, 1))
2615 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2616 static const char * const listen_params[] = {
2617 "vlan", "name", "listen", NULL
2619 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2620 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2624 ret = net_socket_listen_init(vlan, device, name, buf);
2625 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2626 static const char * const connect_params[] = {
2627 "vlan", "name", "connect", NULL
2629 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2630 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2634 ret = net_socket_connect_init(vlan, device, name, buf);
2635 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2636 static const char * const mcast_params[] = {
2637 "vlan", "name", "mcast", NULL
2639 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2640 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2644 ret = net_socket_mcast_init(vlan, device, name, buf);
2646 config_error(mon, "Unknown socket options: %s\n", p);
2650 vlan->nb_host_devs++;
2653 if (!strcmp(device, "vde")) {
2654 static const char * const vde_params[] = {
2655 "vlan", "name", "sock", "port", "group", "mode", NULL
2657 char vde_sock[1024], vde_group[512];
2658 int vde_port, vde_mode;
2660 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2661 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2665 vlan->nb_host_devs++;
2666 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2669 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2670 vde_port = strtol(buf, NULL, 10);
2674 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2675 vde_group[0] = '\0';
2677 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2678 vde_mode = strtol(buf, NULL, 8);
2682 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2685 if (!strcmp(device, "dump")) {
2688 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2689 len = strtol(buf, NULL, 0);
2691 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2692 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2694 ret = net_dump_init(mon, vlan, device, name, buf, len);
2696 config_error(mon, "Unknown network device: %s\n", device);
2701 config_error(mon, "Could not initialize device '%s'\n", device);
2708 void net_client_uninit(NICInfo *nd)
2710 nd->vlan->nb_guest_devs--;
2713 free((void *)nd->model);
2716 static int net_host_check_device(const char *device)
2719 const char *valid_param_list[] = { "tap", "socket", "dump"
2727 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2728 if (!strncmp(valid_param_list[i], device,
2729 strlen(valid_param_list[i])))
2736 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2738 if (!net_host_check_device(device)) {
2739 monitor_printf(mon, "invalid host network device %s\n", device);
2742 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2743 monitor_printf(mon, "adding host network device %s failed\n", device);
2747 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2750 VLANClientState *vc;
2752 vlan = qemu_find_vlan(vlan_id);
2754 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2755 if (!strcmp(vc->name, device)) {
2761 monitor_printf(mon, "can't find device %s\n", device);
2764 if (!net_host_check_device(vc->model)) {
2765 monitor_printf(mon, "invalid host network device %s\n", device);
2768 qemu_del_vlan_client(vc);
2771 int net_client_parse(const char *str)
2779 while (*p != '\0' && *p != ',') {
2780 if ((q - device) < sizeof(device) - 1)
2788 return net_client_init(NULL, device, p);
2791 void net_set_boot_mask(int net_boot_mask)
2795 /* Only the first four NICs may be bootable */
2796 net_boot_mask = net_boot_mask & 0xF;
2798 for (i = 0; i < nb_nics; i++) {
2799 if (net_boot_mask & (1 << i)) {
2800 nd_table[i].bootable = 1;
2801 net_boot_mask &= ~(1 << i);
2805 if (net_boot_mask) {
2806 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2811 void do_info_network(Monitor *mon)
2814 VLANClientState *vc;
2816 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2817 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2818 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2819 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2823 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2826 VLANClientState *vc = NULL;
2828 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2829 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2830 if (strcmp(vc->name, name) == 0)
2835 monitor_printf(mon, "could not find network device '%s'", name);
2839 if (strcmp(up_or_down, "up") == 0)
2841 else if (strcmp(up_or_down, "down") == 0)
2844 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2845 "valid\n", up_or_down);
2847 if (vc->link_status_changed)
2848 vc->link_status_changed(vc);
2853 void net_cleanup(void)
2857 /* close network clients */
2858 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2859 VLANClientState *vc = vlan->first_client;
2862 VLANClientState *next = vc->next;
2864 qemu_del_vlan_client(vc);
2871 void net_client_check(void)
2875 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2876 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2878 if (vlan->nb_guest_devs == 0)
2879 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2880 if (vlan->nb_host_devs == 0)
2882 "Warning: vlan %d is not connected to host network\n",