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 {
681 TAILQ_ENTRY(SlirpState) entry;
686 static struct slirp_config_str *slirp_configs;
687 const char *legacy_tftp_prefix;
688 const char *legacy_bootp_filename;
689 static TAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
690 TAILQ_HEAD_INITIALIZER(slirp_stacks);
692 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
694 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
698 static const char *legacy_smb_export;
700 static void slirp_smb(SlirpState *s, Monitor *mon, const char *exported_dir,
701 struct in_addr vserver_addr);
704 int slirp_can_output(void *opaque)
706 SlirpState *s = opaque;
708 return qemu_can_send_packet(s->vc);
711 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
713 SlirpState *s = opaque;
716 printf("slirp output:\n");
717 hex_dump(stdout, pkt, pkt_len);
719 qemu_send_packet(s->vc, pkt, pkt_len);
722 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
724 SlirpState *s = vc->opaque;
727 printf("slirp input:\n");
728 hex_dump(stdout, buf, size);
730 slirp_input(s->slirp, buf, size);
734 static void net_slirp_cleanup(VLANClientState *vc)
736 SlirpState *s = vc->opaque;
738 slirp_cleanup(s->slirp);
739 TAILQ_REMOVE(&slirp_stacks, s, entry);
743 static int net_slirp_init(Monitor *mon, VLANState *vlan, const char *model,
744 const char *name, int restricted,
745 const char *vnetwork, const char *vhost,
746 const char *vhostname, const char *tftp_export,
747 const char *bootfile, const char *vdhcp_start,
748 const char *vnameserver, const char *smb_export,
749 const char *vsmbserver)
751 /* default settings according to historic slirp */
752 struct in_addr net = { .s_addr = htonl(0x0a000000) }; /* 10.0.0.0 */
753 struct in_addr mask = { .s_addr = htonl(0xff000000) }; /* 255.0.0.0 */
754 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
755 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
756 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
758 struct in_addr smbsrv = { .s_addr = 0 };
767 tftp_export = legacy_tftp_prefix;
770 bootfile = legacy_bootp_filename;
774 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
775 if (!inet_aton(vnetwork, &net)) {
778 addr = ntohl(net.s_addr);
779 if (!(addr & 0x80000000)) {
780 mask.s_addr = htonl(0xff000000); /* class A */
781 } else if ((addr & 0xfff00000) == 0xac100000) {
782 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
783 } else if ((addr & 0xc0000000) == 0x80000000) {
784 mask.s_addr = htonl(0xffff0000); /* class B */
785 } else if ((addr & 0xffff0000) == 0xc0a80000) {
786 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
787 } else if ((addr & 0xffff0000) == 0xc6120000) {
788 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
789 } else if ((addr & 0xe0000000) == 0xe0000000) {
790 mask.s_addr = htonl(0xffffff00); /* class C */
792 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
795 if (!inet_aton(buf, &net)) {
798 shift = strtol(vnetwork, &end, 10);
800 if (!inet_aton(vnetwork, &mask)) {
803 } else if (shift < 4 || shift > 32) {
806 mask.s_addr = htonl(0xffffffff << (32 - shift));
809 net.s_addr &= mask.s_addr;
810 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
811 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
812 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
815 if (vhost && !inet_aton(vhost, &host)) {
818 if ((host.s_addr & mask.s_addr) != net.s_addr) {
822 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
825 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
826 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
830 if (vnameserver && !inet_aton(vnameserver, &dns)) {
833 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
834 dns.s_addr == host.s_addr) {
839 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
844 s = qemu_mallocz(sizeof(SlirpState));
845 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
846 tftp_export, bootfile, dhcp, dns, s);
847 TAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
849 while (slirp_configs) {
850 struct slirp_config_str *config = slirp_configs;
852 if (config->flags & SLIRP_CFG_HOSTFWD) {
853 slirp_hostfwd(s, mon, config->str,
854 config->flags & SLIRP_CFG_LEGACY);
856 slirp_guestfwd(s, mon, config->str,
857 config->flags & SLIRP_CFG_LEGACY);
859 slirp_configs = config->next;
864 smb_export = legacy_smb_export;
867 slirp_smb(s, mon, smb_export, smbsrv);
871 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, slirp_receive, NULL,
872 net_slirp_cleanup, s);
873 s->vc->info_str[0] = '\0';
877 void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
879 struct in_addr host_addr = { .s_addr = INADDR_ANY };
882 const char *p = src_str;
886 if (TAILQ_EMPTY(&slirp_stacks)) {
887 monitor_printf(mon, "user mode network stack not in use\n");
891 if (!src_str || !src_str[0])
894 get_str_sep(buf, sizeof(buf), &p, ':');
896 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
898 } else if (!strcmp(buf, "udp")) {
904 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
907 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
913 err = slirp_remove_hostfwd(TAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
914 host_addr, host_port);
916 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
917 err ? "removed" : "not found");
921 monitor_printf(mon, "invalid format\n");
924 static void slirp_hostfwd(SlirpState *s, Monitor *mon, const char *redir_str,
927 struct in_addr host_addr = { .s_addr = INADDR_ANY };
928 struct in_addr guest_addr = { .s_addr = 0 };
929 int host_port, guest_port;
936 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
939 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
941 } else if (!strcmp(buf, "udp")) {
947 if (!legacy_format) {
948 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
951 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
956 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
959 host_port = strtol(buf, &end, 0);
960 if (*end != '\0' || host_port < 1 || host_port > 65535) {
964 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
967 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
971 guest_port = strtol(p, &end, 0);
972 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
976 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
978 config_error(mon, "could not set up host forwarding rule '%s'\n",
984 config_error(mon, "invalid host forwarding rule '%s'\n", redir_str);
987 void net_slirp_hostfwd_add(Monitor *mon, const char *redir_str)
989 if (TAILQ_EMPTY(&slirp_stacks)) {
990 monitor_printf(mon, "user mode network stack not in use\n");
994 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), mon, redir_str, 0);
997 void net_slirp_redir(const char *redir_str)
999 struct slirp_config_str *config;
1001 if (TAILQ_EMPTY(&slirp_stacks)) {
1002 config = qemu_malloc(sizeof(*config));
1003 pstrcpy(config->str, sizeof(config->str), redir_str);
1004 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1005 config->next = slirp_configs;
1006 slirp_configs = config;
1010 slirp_hostfwd(TAILQ_FIRST(&slirp_stacks), NULL, redir_str, 1);
1015 static char smb_dir[1024];
1017 /* automatic user mode samba server configuration */
1018 static void smb_exit(void)
1022 snprintf(cmd, sizeof(cmd), "rm -rf %s", smb_dir);
1026 static void slirp_smb(SlirpState* s, Monitor *mon, const char *exported_dir,
1027 struct in_addr vserver_addr)
1029 char smb_conf[1024];
1030 char smb_cmdline[1024];
1033 /* XXX: better tmp dir construction */
1034 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%ld", (long)getpid());
1035 if (mkdir(smb_dir, 0700) < 0) {
1036 config_error(mon, "could not create samba server dir '%s'\n", smb_dir);
1039 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
1041 f = fopen(smb_conf, "w");
1044 config_error(mon, "could not create samba server "
1045 "configuration file '%s'\n", smb_conf);
1052 "socket address=127.0.0.1\n"
1053 "pid directory=%s\n"
1054 "lock directory=%s\n"
1055 "log file=%s/log.smbd\n"
1056 "smb passwd file=%s/smbpasswd\n"
1057 "security = share\n"
1072 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1073 SMBD_COMMAND, smb_conf);
1075 if (slirp_add_exec(s->slirp, 0, smb_cmdline, vserver_addr, 139) < 0) {
1076 config_error(mon, "conflicting/invalid smbserver address\n");
1080 /* automatic user mode samba server configuration (legacy interface) */
1081 void net_slirp_smb(const char *exported_dir)
1083 struct in_addr vserver_addr = { .s_addr = 0 };
1085 if (legacy_smb_export) {
1086 fprintf(stderr, "-smb given twice\n");
1089 legacy_smb_export = exported_dir;
1090 if (!TAILQ_EMPTY(&slirp_stacks)) {
1091 slirp_smb(TAILQ_FIRST(&slirp_stacks), NULL, exported_dir,
1096 #endif /* !defined(_WIN32) */
1099 CharDriverState *hd;
1100 struct in_addr server;
1105 static int guestfwd_can_read(void *opaque)
1107 struct GuestFwd *fwd = opaque;
1108 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1111 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1113 struct GuestFwd *fwd = opaque;
1114 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1117 static void slirp_guestfwd(SlirpState *s, Monitor *mon, const char *config_str,
1120 struct in_addr server = { .s_addr = 0 };
1121 struct GuestFwd *fwd;
1128 if (legacy_format) {
1129 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1133 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1136 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1139 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1142 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1145 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1149 port = strtol(buf, &end, 10);
1150 if (*end != '\0' || port < 1 || port > 65535) {
1154 fwd = qemu_malloc(sizeof(struct GuestFwd));
1155 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1156 fwd->hd = qemu_chr_open(buf, p, NULL);
1158 config_error(mon, "could not open guest forwarding device '%s'\n",
1163 fwd->server = server;
1165 fwd->slirp = s->slirp;
1167 if (slirp_add_exec(s->slirp, 3, fwd->hd, server, port) < 0) {
1168 config_error(mon, "conflicting/invalid host:port in guest forwarding "
1169 "rule '%s'\n", config_str);
1173 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1178 config_error(mon, "invalid guest forwarding rule '%s'\n", config_str);
1181 void do_info_usernet(Monitor *mon)
1185 TAILQ_FOREACH(s, &slirp_stacks, entry) {
1186 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1187 slirp_connection_info(s->slirp, mon);
1191 #endif /* CONFIG_SLIRP */
1193 #if !defined(_WIN32)
1195 typedef struct TAPState {
1196 VLANClientState *vc;
1198 char down_script[1024];
1199 char down_script_arg[128];
1201 unsigned int read_poll : 1;
1202 unsigned int write_poll : 1;
1205 static int launch_script(const char *setup_script, const char *ifname, int fd);
1207 static int tap_can_send(void *opaque);
1208 static void tap_send(void *opaque);
1209 static void tap_writable(void *opaque);
1211 static void tap_update_fd_handler(TAPState *s)
1213 qemu_set_fd_handler2(s->fd,
1214 s->read_poll ? tap_can_send : NULL,
1215 s->read_poll ? tap_send : NULL,
1216 s->write_poll ? tap_writable : NULL,
1220 static void tap_read_poll(TAPState *s, int enable)
1222 s->read_poll = !!enable;
1223 tap_update_fd_handler(s);
1226 static void tap_write_poll(TAPState *s, int enable)
1228 s->write_poll = !!enable;
1229 tap_update_fd_handler(s);
1232 static void tap_writable(void *opaque)
1234 TAPState *s = opaque;
1236 tap_write_poll(s, 0);
1238 qemu_flush_queued_packets(s->vc);
1241 static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
1244 TAPState *s = vc->opaque;
1248 len = writev(s->fd, iov, iovcnt);
1249 } while (len == -1 && errno == EINTR);
1251 if (len == -1 && errno == EAGAIN) {
1252 tap_write_poll(s, 1);
1259 static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1261 TAPState *s = vc->opaque;
1265 len = write(s->fd, buf, size);
1266 } while (len == -1 && (errno == EINTR || errno == EAGAIN));
1271 static int tap_can_send(void *opaque)
1273 TAPState *s = opaque;
1275 return qemu_can_send_packet(s->vc);
1279 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1284 sbuf.maxlen = maxlen;
1285 sbuf.buf = (char *)buf;
1287 return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
1290 static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
1292 return read(tapfd, buf, maxlen);
1296 static void tap_send_completed(VLANClientState *vc, ssize_t len)
1298 TAPState *s = vc->opaque;
1299 tap_read_poll(s, 1);
1302 static void tap_send(void *opaque)
1304 TAPState *s = opaque;
1308 size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
1313 size = qemu_send_packet_async(s->vc, s->buf, size, tap_send_completed);
1315 tap_read_poll(s, 0);
1320 static void tap_set_sndbuf(TAPState *s, int sndbuf, Monitor *mon)
1323 if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1) {
1324 config_error(mon, "TUNSETSNDBUF ioctl failed: %s\n",
1328 config_error(mon, "No '-net tap,sndbuf=<nbytes>' support available\n");
1332 static void tap_cleanup(VLANClientState *vc)
1334 TAPState *s = vc->opaque;
1336 qemu_purge_queued_packets(vc);
1338 if (s->down_script[0])
1339 launch_script(s->down_script, s->down_script_arg, s->fd);
1341 tap_read_poll(s, 0);
1342 tap_write_poll(s, 0);
1349 static TAPState *net_tap_fd_init(VLANState *vlan,
1356 s = qemu_mallocz(sizeof(TAPState));
1358 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, tap_receive,
1359 tap_receive_iov, tap_cleanup, s);
1360 tap_read_poll(s, 1);
1361 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
1365 #if defined (HOST_BSD) || defined (__FreeBSD_kernel__)
1366 static int tap_open(char *ifname, int ifname_size)
1372 TFR(fd = open("/dev/tap", O_RDWR));
1374 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
1379 dev = devname(s.st_rdev, S_IFCHR);
1380 pstrcpy(ifname, ifname_size, dev);
1382 fcntl(fd, F_SETFL, O_NONBLOCK);
1385 #elif defined(__sun__)
1386 #define TUNNEWPPA (('T'<<16) | 0x0001)
1388 * Allocate TAP device, returns opened fd.
1389 * Stores dev name in the first arg(must be large enough).
1391 static int tap_alloc(char *dev, size_t dev_size)
1393 int tap_fd, if_fd, ppa = -1;
1394 static int ip_fd = 0;
1397 static int arp_fd = 0;
1398 int ip_muxid, arp_muxid;
1399 struct strioctl strioc_if, strioc_ppa;
1400 int link_type = I_PLINK;;
1402 char actual_name[32] = "";
1404 memset(&ifr, 0x0, sizeof(ifr));
1408 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
1412 /* Check if IP device was opened */
1416 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
1418 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
1422 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
1424 syslog(LOG_ERR, "Can't open /dev/tap");
1428 /* Assign a new PPA and get its unit number. */
1429 strioc_ppa.ic_cmd = TUNNEWPPA;
1430 strioc_ppa.ic_timout = 0;
1431 strioc_ppa.ic_len = sizeof(ppa);
1432 strioc_ppa.ic_dp = (char *)&ppa;
1433 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
1434 syslog (LOG_ERR, "Can't assign new interface");
1436 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
1438 syslog(LOG_ERR, "Can't open /dev/tap (2)");
1441 if(ioctl(if_fd, I_PUSH, "ip") < 0){
1442 syslog(LOG_ERR, "Can't push IP module");
1446 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
1447 syslog(LOG_ERR, "Can't get flags\n");
1449 snprintf (actual_name, 32, "tap%d", ppa);
1450 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1453 /* Assign ppa according to the unit number returned by tun device */
1455 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
1456 syslog (LOG_ERR, "Can't set PPA %d", ppa);
1457 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
1458 syslog (LOG_ERR, "Can't get flags\n");
1459 /* Push arp module to if_fd */
1460 if (ioctl (if_fd, I_PUSH, "arp") < 0)
1461 syslog (LOG_ERR, "Can't push ARP module (2)");
1463 /* Push arp module to ip_fd */
1464 if (ioctl (ip_fd, I_POP, NULL) < 0)
1465 syslog (LOG_ERR, "I_POP failed\n");
1466 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
1467 syslog (LOG_ERR, "Can't push ARP module (3)\n");
1469 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
1471 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
1473 /* Set ifname to arp */
1474 strioc_if.ic_cmd = SIOCSLIFNAME;
1475 strioc_if.ic_timout = 0;
1476 strioc_if.ic_len = sizeof(ifr);
1477 strioc_if.ic_dp = (char *)𝔦
1478 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
1479 syslog (LOG_ERR, "Can't set ifname to arp\n");
1482 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
1483 syslog(LOG_ERR, "Can't link TAP device to IP");
1487 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
1488 syslog (LOG_ERR, "Can't link TAP device to ARP");
1492 memset(&ifr, 0x0, sizeof(ifr));
1493 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
1494 ifr.lifr_ip_muxid = ip_muxid;
1495 ifr.lifr_arp_muxid = arp_muxid;
1497 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
1499 ioctl (ip_fd, I_PUNLINK , arp_muxid);
1500 ioctl (ip_fd, I_PUNLINK, ip_muxid);
1501 syslog (LOG_ERR, "Can't set multiplexor id");
1504 snprintf(dev, dev_size, "tap%d", ppa);
1508 static int tap_open(char *ifname, int ifname_size)
1512 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
1513 fprintf(stderr, "Cannot allocate TAP device\n");
1516 pstrcpy(ifname, ifname_size, dev);
1517 fcntl(fd, F_SETFL, O_NONBLOCK);
1520 #elif defined (_AIX)
1521 static int tap_open(char *ifname, int ifname_size)
1523 fprintf (stderr, "no tap on AIX\n");
1527 static int tap_open(char *ifname, int ifname_size)
1532 TFR(fd = open("/dev/net/tun", O_RDWR));
1534 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
1537 memset(&ifr, 0, sizeof(ifr));
1538 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
1539 if (ifname[0] != '\0')
1540 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
1542 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
1543 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
1545 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
1549 pstrcpy(ifname, ifname_size, ifr.ifr_name);
1550 fcntl(fd, F_SETFL, O_NONBLOCK);
1555 static int launch_script(const char *setup_script, const char *ifname, int fd)
1557 sigset_t oldmask, mask;
1563 sigaddset(&mask, SIGCHLD);
1564 sigprocmask(SIG_BLOCK, &mask, &oldmask);
1566 /* try to launch network script */
1569 int open_max = sysconf(_SC_OPEN_MAX), i;
1571 for (i = 0; i < open_max; i++) {
1572 if (i != STDIN_FILENO &&
1573 i != STDOUT_FILENO &&
1574 i != STDERR_FILENO &&
1580 *parg++ = (char *)setup_script;
1581 *parg++ = (char *)ifname;
1583 execv(setup_script, args);
1585 } else if (pid > 0) {
1586 while (waitpid(pid, &status, 0) != pid) {
1589 sigprocmask(SIG_SETMASK, &oldmask, NULL);
1591 if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
1595 fprintf(stderr, "%s: could not launch network script\n", setup_script);
1599 static TAPState *net_tap_init(VLANState *vlan, const char *model,
1600 const char *name, const char *ifname1,
1601 const char *setup_script, const char *down_script)
1607 if (ifname1 != NULL)
1608 pstrcpy(ifname, sizeof(ifname), ifname1);
1611 TFR(fd = tap_open(ifname, sizeof(ifname)));
1615 if (!setup_script || !strcmp(setup_script, "no"))
1617 if (setup_script[0] != '\0' &&
1618 launch_script(setup_script, ifname, fd)) {
1621 s = net_tap_fd_init(vlan, model, name, fd);
1622 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1623 "ifname=%s,script=%s,downscript=%s",
1624 ifname, setup_script, down_script);
1625 if (down_script && strcmp(down_script, "no")) {
1626 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
1627 snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
1632 #endif /* !_WIN32 */
1634 #if defined(CONFIG_VDE)
1635 typedef struct VDEState {
1636 VLANClientState *vc;
1640 static void vde_to_qemu(void *opaque)
1642 VDEState *s = opaque;
1646 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1648 qemu_send_packet(s->vc, buf, size);
1652 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1654 VDEState *s = vc->opaque;
1658 ret = vde_send(s->vde, (const char *)buf, size, 0);
1659 } while (ret < 0 && errno == EINTR);
1664 static void vde_cleanup(VLANClientState *vc)
1666 VDEState *s = vc->opaque;
1667 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1672 static int net_vde_init(VLANState *vlan, const char *model,
1673 const char *name, const char *sock,
1674 int port, const char *group, int mode)
1677 char *init_group = strlen(group) ? (char *)group : NULL;
1678 char *init_sock = strlen(sock) ? (char *)sock : NULL;
1680 struct vde_open_args args = {
1682 .group = init_group,
1686 s = qemu_mallocz(sizeof(VDEState));
1687 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1692 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, vde_receive,
1693 NULL, vde_cleanup, s);
1694 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1695 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1696 sock, vde_datafd(s->vde));
1701 /* network connection */
1702 typedef struct NetSocketState {
1703 VLANClientState *vc;
1705 int state; /* 0 = getting length, 1 = getting data */
1707 unsigned int packet_len;
1709 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1712 typedef struct NetSocketListenState {
1717 } NetSocketListenState;
1719 /* XXX: we consider we can send the whole packet without blocking */
1720 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1722 NetSocketState *s = vc->opaque;
1726 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1727 return send_all(s->fd, buf, size);
1730 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1732 NetSocketState *s = vc->opaque;
1734 return sendto(s->fd, (const void *)buf, size, 0,
1735 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1738 static void net_socket_send(void *opaque)
1740 NetSocketState *s = opaque;
1746 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1748 err = socket_error();
1749 if (err != EWOULDBLOCK)
1751 } else if (size == 0) {
1752 /* end of connection */
1754 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1760 /* reassemble a packet from the network */
1766 memcpy(s->buf + s->index, buf, l);
1770 if (s->index == 4) {
1772 s->packet_len = ntohl(*(uint32_t *)s->buf);
1778 l = s->packet_len - s->index;
1781 if (s->index + l <= sizeof(s->buf)) {
1782 memcpy(s->buf + s->index, buf, l);
1784 fprintf(stderr, "serious error: oversized packet received,"
1785 "connection terminated.\n");
1793 if (s->index >= s->packet_len) {
1794 qemu_send_packet(s->vc, s->buf, s->packet_len);
1803 static void net_socket_send_dgram(void *opaque)
1805 NetSocketState *s = opaque;
1808 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1812 /* end of connection */
1813 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1816 qemu_send_packet(s->vc, s->buf, size);
1819 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1824 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1825 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1826 inet_ntoa(mcastaddr->sin_addr),
1827 (int)ntohl(mcastaddr->sin_addr.s_addr));
1831 fd = socket(PF_INET, SOCK_DGRAM, 0);
1833 perror("socket(PF_INET, SOCK_DGRAM)");
1838 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1839 (const char *)&val, sizeof(val));
1841 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1845 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1851 /* Add host to multicast group */
1852 imr.imr_multiaddr = mcastaddr->sin_addr;
1853 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1855 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1856 (const char *)&imr, sizeof(struct ip_mreq));
1858 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1862 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1864 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1865 (const char *)&val, sizeof(val));
1867 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1871 socket_set_nonblock(fd);
1879 static void net_socket_cleanup(VLANClientState *vc)
1881 NetSocketState *s = vc->opaque;
1882 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1887 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1890 int fd, int is_connected)
1892 struct sockaddr_in saddr;
1894 socklen_t saddr_len;
1897 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1898 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1899 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1903 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1905 if (saddr.sin_addr.s_addr==0) {
1906 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1910 /* clone dgram socket */
1911 newfd = net_socket_mcast_create(&saddr);
1913 /* error already reported by net_socket_mcast_create() */
1917 /* clone newfd to fd, close newfd */
1922 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1923 fd, strerror(errno));
1928 s = qemu_mallocz(sizeof(NetSocketState));
1931 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive_dgram,
1932 NULL, net_socket_cleanup, s);
1933 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1935 /* mcast: save bound address as dst */
1936 if (is_connected) s->dgram_dst=saddr;
1938 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1939 "socket: fd=%d (%s mcast=%s:%d)",
1940 fd, is_connected? "cloned" : "",
1941 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1945 static void net_socket_connect(void *opaque)
1947 NetSocketState *s = opaque;
1948 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1951 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1954 int fd, int is_connected)
1957 s = qemu_mallocz(sizeof(NetSocketState));
1959 s->vc = qemu_new_vlan_client(vlan, model, name, NULL, net_socket_receive,
1960 NULL, net_socket_cleanup, s);
1961 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1962 "socket: fd=%d", fd);
1964 net_socket_connect(s);
1966 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1971 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1972 const char *model, const char *name,
1973 int fd, int is_connected)
1975 int so_type=-1, optlen=sizeof(so_type);
1977 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1978 (socklen_t *)&optlen)< 0) {
1979 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1984 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1986 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1988 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1989 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1990 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1995 static void net_socket_accept(void *opaque)
1997 NetSocketListenState *s = opaque;
1999 struct sockaddr_in saddr;
2004 len = sizeof(saddr);
2005 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
2006 if (fd < 0 && errno != EINTR) {
2008 } else if (fd >= 0) {
2012 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
2016 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
2017 "socket: connection from %s:%d",
2018 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2022 static int net_socket_listen_init(VLANState *vlan,
2025 const char *host_str)
2027 NetSocketListenState *s;
2029 struct sockaddr_in saddr;
2031 if (parse_host_port(&saddr, host_str) < 0)
2034 s = qemu_mallocz(sizeof(NetSocketListenState));
2036 fd = socket(PF_INET, SOCK_STREAM, 0);
2041 socket_set_nonblock(fd);
2043 /* allow fast reuse */
2045 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
2047 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2052 ret = listen(fd, 0);
2058 s->model = strdup(model);
2059 s->name = name ? strdup(name) : NULL;
2061 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
2065 static int net_socket_connect_init(VLANState *vlan,
2068 const char *host_str)
2071 int fd, connected, ret, err;
2072 struct sockaddr_in saddr;
2074 if (parse_host_port(&saddr, host_str) < 0)
2077 fd = socket(PF_INET, SOCK_STREAM, 0);
2082 socket_set_nonblock(fd);
2086 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
2088 err = socket_error();
2089 if (err == EINTR || err == EWOULDBLOCK) {
2090 } else if (err == EINPROGRESS) {
2093 } else if (err == WSAEALREADY) {
2106 s = net_socket_fd_init(vlan, model, name, fd, connected);
2109 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2110 "socket: connect to %s:%d",
2111 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2115 static int net_socket_mcast_init(VLANState *vlan,
2118 const char *host_str)
2122 struct sockaddr_in saddr;
2124 if (parse_host_port(&saddr, host_str) < 0)
2128 fd = net_socket_mcast_create(&saddr);
2132 s = net_socket_fd_init(vlan, model, name, fd, 0);
2136 s->dgram_dst = saddr;
2138 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
2139 "socket: mcast=%s:%d",
2140 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
2145 typedef struct DumpState {
2146 VLANClientState *pcap_vc;
2151 #define PCAP_MAGIC 0xa1b2c3d4
2153 struct pcap_file_hdr {
2155 uint16_t version_major;
2156 uint16_t version_minor;
2163 struct pcap_sf_pkthdr {
2172 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
2174 DumpState *s = vc->opaque;
2175 struct pcap_sf_pkthdr hdr;
2179 /* Early return in case of previous error. */
2184 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, ticks_per_sec);
2185 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
2187 hdr.ts.tv_sec = ts / 1000000;
2188 hdr.ts.tv_usec = ts % 1000000;
2189 hdr.caplen = caplen;
2191 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
2192 write(s->fd, buf, caplen) != caplen) {
2193 qemu_log("-net dump write error - stop dump\n");
2201 static void net_dump_cleanup(VLANClientState *vc)
2203 DumpState *s = vc->opaque;
2209 static int net_dump_init(Monitor *mon, VLANState *vlan, const char *device,
2210 const char *name, const char *filename, int len)
2212 struct pcap_file_hdr hdr;
2215 s = qemu_malloc(sizeof(DumpState));
2217 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
2219 config_error(mon, "-net dump: can't open %s\n", filename);
2223 s->pcap_caplen = len;
2225 hdr.magic = PCAP_MAGIC;
2226 hdr.version_major = 2;
2227 hdr.version_minor = 4;
2230 hdr.snaplen = s->pcap_caplen;
2233 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
2234 config_error(mon, "-net dump write error: %s\n", strerror(errno));
2240 s->pcap_vc = qemu_new_vlan_client(vlan, device, name, NULL, dump_receive, NULL,
2241 net_dump_cleanup, s);
2242 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
2243 "dump to %s (len=%d)", filename, len);
2247 /* find or alloc a new VLAN */
2248 VLANState *qemu_find_vlan(int id)
2250 VLANState **pvlan, *vlan;
2251 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2255 vlan = qemu_mallocz(sizeof(VLANState));
2258 pvlan = &first_vlan;
2259 while (*pvlan != NULL)
2260 pvlan = &(*pvlan)->next;
2265 static int nic_get_free_idx(void)
2269 for (index = 0; index < MAX_NICS; index++)
2270 if (!nd_table[index].used)
2275 void qemu_check_nic_model(NICInfo *nd, const char *model)
2277 const char *models[2];
2282 qemu_check_nic_model_list(nd, models, model);
2285 void qemu_check_nic_model_list(NICInfo *nd, const char * const *models,
2286 const char *default_model)
2288 int i, exit_status = 0;
2291 nd->model = strdup(default_model);
2293 if (strcmp(nd->model, "?") != 0) {
2294 for (i = 0 ; models[i]; i++)
2295 if (strcmp(nd->model, models[i]) == 0)
2298 fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model);
2302 fprintf(stderr, "qemu: Supported NIC models: ");
2303 for (i = 0 ; models[i]; i++)
2304 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2309 int net_client_init(Monitor *mon, const char *device, const char *p)
2317 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
2318 vlan_id = strtol(buf, NULL, 0);
2320 vlan = qemu_find_vlan(vlan_id);
2322 if (get_param_value(buf, sizeof(buf), "name", p)) {
2323 name = qemu_strdup(buf);
2325 if (!strcmp(device, "nic")) {
2326 static const char * const nic_params[] = {
2327 "vlan", "name", "macaddr", "model", "addr", "vectors", NULL
2331 int idx = nic_get_free_idx();
2333 if (check_params(buf, sizeof(buf), nic_params, p) < 0) {
2334 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2338 if (idx == -1 || nb_nics >= MAX_NICS) {
2339 config_error(mon, "Too Many NICs\n");
2343 nd = &nd_table[idx];
2344 macaddr = nd->macaddr;
2350 macaddr[5] = 0x56 + idx;
2352 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
2353 if (parse_macaddr(macaddr, buf) < 0) {
2354 config_error(mon, "invalid syntax for ethernet address\n");
2359 if (get_param_value(buf, sizeof(buf), "model", p)) {
2360 nd->model = strdup(buf);
2362 if (get_param_value(buf, sizeof(buf), "addr", p)) {
2363 nd->devaddr = strdup(buf);
2365 nd->nvectors = NIC_NVECTORS_UNSPECIFIED;
2366 if (get_param_value(buf, sizeof(buf), "vectors", p)) {
2368 long vectors = strtol(buf, &endptr, 0);
2370 config_error(mon, "invalid syntax for # of vectors\n");
2374 if (vectors < 0 || vectors > 0x7ffffff) {
2375 config_error(mon, "invalid # of vectors\n");
2379 nd->nvectors = vectors;
2386 vlan->nb_guest_devs++;
2389 if (!strcmp(device, "none")) {
2391 config_error(mon, "'none' takes no parameters\n");
2395 /* does nothing. It is needed to signal that no network cards
2400 if (!strcmp(device, "user")) {
2401 static const char * const slirp_params[] = {
2402 "vlan", "name", "hostname", "restrict", "ip", "net", "host",
2403 "tftp", "bootfile", "dhcpstart", "dns", "smb", "smbserver",
2404 "hostfwd", "guestfwd", NULL
2406 struct slirp_config_str *config;
2410 char *vhostname = NULL;
2411 char *tftp_export = NULL;
2412 char *bootfile = NULL;
2413 char *vdhcp_start = NULL;
2414 char *vnamesrv = NULL;
2415 char *smb_export = NULL;
2416 char *vsmbsrv = NULL;
2419 if (check_params(buf, sizeof(buf), slirp_params, p) < 0) {
2420 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2424 if (get_param_value(buf, sizeof(buf), "ip", p)) {
2425 /* emulate legacy parameter */
2426 vnet = qemu_malloc(strlen(buf) + strlen("/24") + 1);
2428 strcat(vnet, "/24");
2430 if (get_param_value(buf, sizeof(buf), "net", p)) {
2431 vnet = qemu_strdup(buf);
2433 if (get_param_value(buf, sizeof(buf), "host", p)) {
2434 vhost = qemu_strdup(buf);
2436 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
2437 vhostname = qemu_strdup(buf);
2439 if (get_param_value(buf, sizeof(buf), "restrict", p)) {
2440 restricted = (buf[0] == 'y') ? 1 : 0;
2442 if (get_param_value(buf, sizeof(buf), "dhcpstart", p)) {
2443 vdhcp_start = qemu_strdup(buf);
2445 if (get_param_value(buf, sizeof(buf), "dns", p)) {
2446 vnamesrv = qemu_strdup(buf);
2448 if (get_param_value(buf, sizeof(buf), "tftp", p)) {
2449 tftp_export = qemu_strdup(buf);
2451 if (get_param_value(buf, sizeof(buf), "bootfile", p)) {
2452 bootfile = qemu_strdup(buf);
2454 if (get_param_value(buf, sizeof(buf), "smb", p)) {
2455 smb_export = qemu_strdup(buf);
2456 if (get_param_value(buf, sizeof(buf), "smbserver", p)) {
2457 vsmbsrv = qemu_strdup(buf);
2462 config = qemu_malloc(sizeof(*config));
2463 if (!get_next_param_value(config->str, sizeof(config->str),
2467 config->flags = SLIRP_CFG_HOSTFWD;
2468 config->next = slirp_configs;
2469 slirp_configs = config;
2474 config = qemu_malloc(sizeof(*config));
2475 if (!get_next_param_value(config->str, sizeof(config->str),
2480 config->next = slirp_configs;
2481 slirp_configs = config;
2485 vlan->nb_host_devs++;
2486 ret = net_slirp_init(mon, vlan, device, name, restricted, vnet, vhost,
2487 vhostname, tftp_export, bootfile, vdhcp_start,
2488 vnamesrv, smb_export, vsmbsrv);
2491 qemu_free(vhostname);
2492 qemu_free(tftp_export);
2493 qemu_free(bootfile);
2494 qemu_free(vdhcp_start);
2495 qemu_free(vnamesrv);
2496 qemu_free(smb_export);
2498 } else if (!strcmp(device, "channel")) {
2499 if (TAILQ_EMPTY(&slirp_stacks)) {
2500 struct slirp_config_str *config;
2502 config = qemu_malloc(sizeof(*config));
2503 pstrcpy(config->str, sizeof(config->str), p);
2504 config->flags = SLIRP_CFG_LEGACY;
2505 config->next = slirp_configs;
2506 slirp_configs = config;
2508 slirp_guestfwd(TAILQ_FIRST(&slirp_stacks), mon, p, 1);
2514 if (!strcmp(device, "tap")) {
2515 static const char * const tap_params[] = {
2516 "vlan", "name", "ifname", NULL
2520 if (check_params(buf, sizeof(buf), tap_params, p) < 0) {
2521 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2525 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2526 config_error(mon, "tap: no interface name\n");
2530 vlan->nb_host_devs++;
2531 ret = tap_win32_init(vlan, device, name, ifname);
2533 #elif defined (_AIX)
2535 if (!strcmp(device, "tap")) {
2536 char ifname[64], chkbuf[64];
2537 char setup_script[1024], down_script[1024];
2540 vlan->nb_host_devs++;
2541 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2542 static const char * const fd_params[] = {
2543 "vlan", "name", "fd", "sndbuf", NULL
2545 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2546 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2550 fd = strtol(buf, NULL, 0);
2551 fcntl(fd, F_SETFL, O_NONBLOCK);
2552 s = net_tap_fd_init(vlan, device, name, fd);
2554 static const char * const tap_params[] = {
2555 "vlan", "name", "ifname", "script", "downscript", "sndbuf", NULL
2557 if (check_params(chkbuf, sizeof(chkbuf), tap_params, p) < 0) {
2558 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2562 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
2565 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
2566 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
2568 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
2569 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
2571 s = net_tap_init(vlan, device, name, ifname, setup_script, down_script);
2574 if (get_param_value(buf, sizeof(buf), "sndbuf", p)) {
2575 tap_set_sndbuf(s, atoi(buf), mon);
2583 if (!strcmp(device, "socket")) {
2585 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
2586 static const char * const fd_params[] = {
2587 "vlan", "name", "fd", NULL
2590 if (check_params(chkbuf, sizeof(chkbuf), fd_params, p) < 0) {
2591 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2595 fd = strtol(buf, NULL, 0);
2597 if (net_socket_fd_init(vlan, device, name, fd, 1))
2599 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
2600 static const char * const listen_params[] = {
2601 "vlan", "name", "listen", NULL
2603 if (check_params(chkbuf, sizeof(chkbuf), listen_params, p) < 0) {
2604 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2608 ret = net_socket_listen_init(vlan, device, name, buf);
2609 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
2610 static const char * const connect_params[] = {
2611 "vlan", "name", "connect", NULL
2613 if (check_params(chkbuf, sizeof(chkbuf), connect_params, p) < 0) {
2614 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2618 ret = net_socket_connect_init(vlan, device, name, buf);
2619 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
2620 static const char * const mcast_params[] = {
2621 "vlan", "name", "mcast", NULL
2623 if (check_params(chkbuf, sizeof(chkbuf), mcast_params, p) < 0) {
2624 config_error(mon, "invalid parameter '%s' in '%s'\n", chkbuf, p);
2628 ret = net_socket_mcast_init(vlan, device, name, buf);
2630 config_error(mon, "Unknown socket options: %s\n", p);
2634 vlan->nb_host_devs++;
2637 if (!strcmp(device, "vde")) {
2638 static const char * const vde_params[] = {
2639 "vlan", "name", "sock", "port", "group", "mode", NULL
2641 char vde_sock[1024], vde_group[512];
2642 int vde_port, vde_mode;
2644 if (check_params(buf, sizeof(buf), vde_params, p) < 0) {
2645 config_error(mon, "invalid parameter '%s' in '%s'\n", buf, p);
2649 vlan->nb_host_devs++;
2650 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
2653 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
2654 vde_port = strtol(buf, NULL, 10);
2658 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
2659 vde_group[0] = '\0';
2661 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
2662 vde_mode = strtol(buf, NULL, 8);
2666 ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode);
2669 if (!strcmp(device, "dump")) {
2672 if (get_param_value(buf, sizeof(buf), "len", p) > 0) {
2673 len = strtol(buf, NULL, 0);
2675 if (!get_param_value(buf, sizeof(buf), "file", p)) {
2676 snprintf(buf, sizeof(buf), "qemu-vlan%d.pcap", vlan_id);
2678 ret = net_dump_init(mon, vlan, device, name, buf, len);
2680 config_error(mon, "Unknown network device: %s\n", device);
2685 config_error(mon, "Could not initialize device '%s'\n", device);
2692 void net_client_uninit(NICInfo *nd)
2694 nd->vlan->nb_guest_devs--;
2697 free((void *)nd->model);
2700 static int net_host_check_device(const char *device)
2703 const char *valid_param_list[] = { "tap", "socket", "dump"
2711 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2712 if (!strncmp(valid_param_list[i], device,
2713 strlen(valid_param_list[i])))
2720 void net_host_device_add(Monitor *mon, const char *device, const char *opts)
2722 if (!net_host_check_device(device)) {
2723 monitor_printf(mon, "invalid host network device %s\n", device);
2726 if (net_client_init(mon, device, opts ? opts : "") < 0) {
2727 monitor_printf(mon, "adding host network device %s failed\n", device);
2731 void net_host_device_remove(Monitor *mon, int vlan_id, const char *device)
2734 VLANClientState *vc;
2736 vlan = qemu_find_vlan(vlan_id);
2738 for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
2739 if (!strcmp(vc->name, device)) {
2745 monitor_printf(mon, "can't find device %s\n", device);
2748 if (!net_host_check_device(vc->model)) {
2749 monitor_printf(mon, "invalid host network device %s\n", device);
2752 qemu_del_vlan_client(vc);
2755 int net_client_parse(const char *str)
2763 while (*p != '\0' && *p != ',') {
2764 if ((q - device) < sizeof(device) - 1)
2772 return net_client_init(NULL, device, p);
2775 void net_set_boot_mask(int net_boot_mask)
2779 /* Only the first four NICs may be bootable */
2780 net_boot_mask = net_boot_mask & 0xF;
2782 for (i = 0; i < nb_nics; i++) {
2783 if (net_boot_mask & (1 << i)) {
2784 nd_table[i].bootable = 1;
2785 net_boot_mask &= ~(1 << i);
2789 if (net_boot_mask) {
2790 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2795 void do_info_network(Monitor *mon)
2798 VLANClientState *vc;
2800 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2801 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2802 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
2803 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2807 int do_set_link(Monitor *mon, const char *name, const char *up_or_down)
2810 VLANClientState *vc = NULL;
2812 for (vlan = first_vlan; vlan != NULL; vlan = vlan->next)
2813 for (vc = vlan->first_client; vc != NULL; vc = vc->next)
2814 if (strcmp(vc->name, name) == 0)
2819 monitor_printf(mon, "could not find network device '%s'", name);
2823 if (strcmp(up_or_down, "up") == 0)
2825 else if (strcmp(up_or_down, "down") == 0)
2828 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2829 "valid\n", up_or_down);
2831 if (vc->link_status_changed)
2832 vc->link_status_changed(vc);
2837 void net_cleanup(void)
2841 /* close network clients */
2842 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2843 VLANClientState *vc = vlan->first_client;
2846 VLANClientState *next = vc->next;
2848 qemu_del_vlan_client(vc);
2855 void net_client_check(void)
2859 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
2860 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2862 if (vlan->nb_guest_devs == 0)
2863 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2864 if (vlan->nb_host_devs == 0)
2866 "Warning: vlan %d is not connected to host network\n",