4 * Copyright (c) 2003-2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
36 #include <sys/times.h>
40 #include <sys/ioctl.h>
41 #include <sys/resource.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
45 #include <arpa/inet.h>
48 #include <sys/select.h>
51 #if defined(__FreeBSD__) || defined(__DragonFly__)
56 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
57 #include <freebsd/stdlib.h>
62 #include <linux/rtc.h>
64 /* For the benefit of older linux systems which don't supply it,
65 we use a local copy of hpet.h. */
66 /* #include <linux/hpet.h> */
69 #include <linux/ppdev.h>
70 #include <linux/parport.h>
74 #include <sys/ethernet.h>
75 #include <sys/sockio.h>
76 #include <netinet/arp.h>
77 #include <netinet/in.h>
78 #include <netinet/in_systm.h>
79 #include <netinet/ip.h>
80 #include <netinet/ip_icmp.h> // must come after ip.h
81 #include <netinet/udp.h>
82 #include <netinet/tcp.h>
90 #if defined(__OpenBSD__)
94 #if defined(CONFIG_VDE)
95 #include <libvdeplug.h>
98 #include "qemu-common.h"
103 #include "qemu-timer.h"
104 #include "qemu-char.h"
105 #include "audio/audio.h"
106 #include "qemu_socket.h"
107 #include "qemu-log.h"
108 #include "qemu-config.h"
110 #include "slirp/libslirp.h"
112 static QTAILQ_HEAD(, VLANState) vlans;
113 static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
115 /***********************************************************/
116 /* network device redirectors */
118 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
119 static void hex_dump(FILE *f, const uint8_t *buf, int size)
123 for(i=0;i<size;i+=16) {
127 fprintf(f, "%08x ", i);
130 fprintf(f, " %02x", buf[i+j]);
137 if (c < ' ' || c > '~')
146 static int parse_macaddr(uint8_t *macaddr, const char *p)
153 offset = strtol(p, &last_char, 0);
154 if (0 == errno && '\0' == *last_char &&
155 offset >= 0 && offset <= 0xFFFFFF) {
156 macaddr[3] = (offset & 0xFF0000) >> 16;
157 macaddr[4] = (offset & 0xFF00) >> 8;
158 macaddr[5] = offset & 0xFF;
161 for(i = 0; i < 6; i++) {
162 macaddr[i] = strtol(p, (char **)&p, 16);
167 if (*p != ':' && *p != '-')
178 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
189 if (len > buf_size - 1)
198 int parse_host_src_port(struct sockaddr_in *haddr,
199 struct sockaddr_in *saddr,
200 const char *input_str)
202 char *str = strdup(input_str);
203 char *host_str = str;
205 const char *src_str2;
209 * Chop off any extra arguments at the end of the string which
210 * would start with a comma, then fill in the src port information
211 * if it was provided else use the "any address" and "any port".
213 if ((ptr = strchr(str,',')))
216 if ((src_str = strchr(input_str,'@'))) {
221 if (parse_host_port(haddr, host_str) < 0)
225 if (!src_str || *src_str == '\0')
228 if (parse_host_port(saddr, src_str2) < 0)
239 int parse_host_port(struct sockaddr_in *saddr, const char *str)
247 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
249 saddr->sin_family = AF_INET;
250 if (buf[0] == '\0') {
251 saddr->sin_addr.s_addr = 0;
253 if (qemu_isdigit(buf[0])) {
254 if (!inet_aton(buf, &saddr->sin_addr))
257 if ((he = gethostbyname(buf)) == NULL)
259 saddr->sin_addr = *(struct in_addr *)he->h_addr;
262 port = strtol(p, (char **)&r, 0);
265 saddr->sin_port = htons(port);
269 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
271 snprintf(vc->info_str, sizeof(vc->info_str),
272 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
274 macaddr[0], macaddr[1], macaddr[2],
275 macaddr[3], macaddr[4], macaddr[5]);
278 void qemu_macaddr_default_if_unset(MACAddr *macaddr)
280 static int index = 0;
281 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
283 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
285 macaddr->a[0] = 0x52;
286 macaddr->a[1] = 0x54;
287 macaddr->a[2] = 0x00;
288 macaddr->a[3] = 0x12;
289 macaddr->a[4] = 0x34;
290 macaddr->a[5] = 0x56 + index++;
293 static char *assign_name(VLANClientState *vc1, const char *model)
299 QTAILQ_FOREACH(vlan, &vlans, next) {
302 QTAILQ_FOREACH(vc, &vlan->clients, next) {
303 if (vc != vc1 && strcmp(vc->model, model) == 0) {
309 snprintf(buf, sizeof(buf), "%s.%d", model, id);
311 return qemu_strdup(buf);
314 static ssize_t qemu_deliver_packet(VLANClientState *sender,
319 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
321 const struct iovec *iov,
325 VLANClientState *qemu_new_vlan_client(net_client_type type,
327 VLANClientState *peer,
330 NetCanReceive *can_receive,
332 NetReceive *receive_raw,
333 NetReceiveIOV *receive_iov,
339 vc = qemu_mallocz(sizeof(VLANClientState));
342 vc->model = qemu_strdup(model);
344 vc->name = qemu_strdup(name);
346 vc->name = assign_name(vc, model);
347 vc->can_receive = can_receive;
348 vc->receive = receive;
349 vc->receive_raw = receive_raw;
350 vc->receive_iov = receive_iov;
351 vc->cleanup = cleanup;
357 QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
363 QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
365 vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
366 qemu_deliver_packet_iov,
373 void qemu_del_vlan_client(VLANClientState *vc)
376 QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
378 if (vc->send_queue) {
379 qemu_del_net_queue(vc->send_queue);
381 QTAILQ_REMOVE(&non_vlan_clients, vc, next);
383 vc->peer->peer = NULL;
392 qemu_free(vc->model);
396 VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
400 QTAILQ_FOREACH(vc, &vlan->clients, next) {
401 if (vc->opaque == opaque) {
409 static VLANClientState *
410 qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
411 const char *client_str)
416 vlan = qemu_find_vlan(vlan_id, 0);
418 monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
422 QTAILQ_FOREACH(vc, &vlan->clients, next) {
423 if (!strcmp(vc->name, client_str)) {
428 monitor_printf(mon, "can't find device %s on VLAN %d\n",
429 client_str, vlan_id);
435 int qemu_can_send_packet(VLANClientState *sender)
437 VLANState *vlan = sender->vlan;
441 if (sender->peer->receive_disabled) {
443 } else if (sender->peer->can_receive &&
444 !sender->peer->can_receive(sender->peer)) {
455 QTAILQ_FOREACH(vc, &vlan->clients, next) {
460 /* no can_receive() handler, they can always receive */
461 if (!vc->can_receive || vc->can_receive(vc)) {
468 static ssize_t qemu_deliver_packet(VLANClientState *sender,
474 VLANClientState *vc = opaque;
481 if (vc->receive_disabled) {
485 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw) {
486 ret = vc->receive_raw(vc, data, size);
488 ret = vc->receive(vc, data, size);
492 vc->receive_disabled = 1;
498 static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
504 VLANState *vlan = opaque;
508 QTAILQ_FOREACH(vc, &vlan->clients, next) {
520 if (vc->receive_disabled) {
525 if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw) {
526 len = vc->receive_raw(vc, buf, size);
528 len = vc->receive(vc, buf, size);
532 vc->receive_disabled = 1;
535 ret = (ret >= 0) ? ret : len;
542 void qemu_purge_queued_packets(VLANClientState *vc)
546 if (!vc->peer && !vc->vlan) {
551 queue = vc->peer->send_queue;
553 queue = vc->vlan->send_queue;
556 qemu_net_queue_purge(queue, vc);
559 void qemu_flush_queued_packets(VLANClientState *vc)
563 vc->receive_disabled = 0;
566 queue = vc->vlan->send_queue;
568 queue = vc->send_queue;
571 qemu_net_queue_flush(queue);
574 static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
576 const uint8_t *buf, int size,
577 NetPacketSent *sent_cb)
582 printf("qemu_send_packet_async:\n");
583 hex_dump(stdout, buf, size);
586 if (sender->link_down || (!sender->peer && !sender->vlan)) {
591 queue = sender->peer->send_queue;
593 queue = sender->vlan->send_queue;
596 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
599 ssize_t qemu_send_packet_async(VLANClientState *sender,
600 const uint8_t *buf, int size,
601 NetPacketSent *sent_cb)
603 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
607 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
609 qemu_send_packet_async(vc, buf, size, NULL);
612 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
614 return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
618 static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
621 uint8_t buffer[4096];
625 for (i = 0; i < iovcnt; i++) {
628 len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
629 memcpy(buffer + offset, iov[i].iov_base, len);
633 return vc->receive(vc, buffer, offset);
636 static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
641 for (i = 0; i < iovcnt; i++)
642 offset += iov[i].iov_len;
646 static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
648 const struct iovec *iov,
652 VLANClientState *vc = opaque;
655 return calc_iov_length(iov, iovcnt);
658 if (vc->receive_iov) {
659 return vc->receive_iov(vc, iov, iovcnt);
661 return vc_sendv_compat(vc, iov, iovcnt);
665 static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
667 const struct iovec *iov,
671 VLANState *vlan = opaque;
675 QTAILQ_FOREACH(vc, &vlan->clients, next) {
683 ret = calc_iov_length(iov, iovcnt);
687 assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
689 if (vc->receive_iov) {
690 len = vc->receive_iov(vc, iov, iovcnt);
692 len = vc_sendv_compat(vc, iov, iovcnt);
695 ret = (ret >= 0) ? ret : len;
701 ssize_t qemu_sendv_packet_async(VLANClientState *sender,
702 const struct iovec *iov, int iovcnt,
703 NetPacketSent *sent_cb)
707 if (sender->link_down || (!sender->peer && !sender->vlan)) {
708 return calc_iov_length(iov, iovcnt);
712 queue = sender->peer->send_queue;
714 queue = sender->vlan->send_queue;
717 return qemu_net_queue_send_iov(queue, sender,
718 QEMU_NET_PACKET_FLAG_NONE,
719 iov, iovcnt, sent_cb);
723 qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
725 return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
728 #if defined(CONFIG_SLIRP)
730 /* slirp network adapter */
732 #define SLIRP_CFG_HOSTFWD 1
733 #define SLIRP_CFG_LEGACY 2
735 struct slirp_config_str {
736 struct slirp_config_str *next;
742 typedef struct SlirpState {
743 QTAILQ_ENTRY(SlirpState) entry;
751 static struct slirp_config_str *slirp_configs;
752 const char *legacy_tftp_prefix;
753 const char *legacy_bootp_filename;
754 static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
755 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
757 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
759 static int slirp_guestfwd(SlirpState *s, const char *config_str,
763 static const char *legacy_smb_export;
765 static int slirp_smb(SlirpState *s, const char *exported_dir,
766 struct in_addr vserver_addr);
767 static void slirp_smb_cleanup(SlirpState *s);
769 static inline void slirp_smb_cleanup(SlirpState *s) { }
772 int slirp_can_output(void *opaque)
774 SlirpState *s = opaque;
776 return qemu_can_send_packet(s->vc);
779 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
781 SlirpState *s = opaque;
784 printf("slirp output:\n");
785 hex_dump(stdout, pkt, pkt_len);
787 qemu_send_packet(s->vc, pkt, pkt_len);
790 static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
792 SlirpState *s = vc->opaque;
795 printf("slirp input:\n");
796 hex_dump(stdout, buf, size);
798 slirp_input(s->slirp, buf, size);
802 static void net_slirp_cleanup(VLANClientState *vc)
804 SlirpState *s = vc->opaque;
806 slirp_cleanup(s->slirp);
807 slirp_smb_cleanup(s);
808 QTAILQ_REMOVE(&slirp_stacks, s, entry);
812 static int net_slirp_init(VLANState *vlan, const char *model,
813 const char *name, int restricted,
814 const char *vnetwork, const char *vhost,
815 const char *vhostname, const char *tftp_export,
816 const char *bootfile, const char *vdhcp_start,
817 const char *vnameserver, const char *smb_export,
818 const char *vsmbserver)
820 /* default settings according to historic slirp */
821 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
822 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
823 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
824 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
825 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
827 struct in_addr smbsrv = { .s_addr = 0 };
834 struct slirp_config_str *config;
837 tftp_export = legacy_tftp_prefix;
840 bootfile = legacy_bootp_filename;
844 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
845 if (!inet_aton(vnetwork, &net)) {
848 addr = ntohl(net.s_addr);
849 if (!(addr & 0x80000000)) {
850 mask.s_addr = htonl(0xff000000); /* class A */
851 } else if ((addr & 0xfff00000) == 0xac100000) {
852 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
853 } else if ((addr & 0xc0000000) == 0x80000000) {
854 mask.s_addr = htonl(0xffff0000); /* class B */
855 } else if ((addr & 0xffff0000) == 0xc0a80000) {
856 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
857 } else if ((addr & 0xffff0000) == 0xc6120000) {
858 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
859 } else if ((addr & 0xe0000000) == 0xe0000000) {
860 mask.s_addr = htonl(0xffffff00); /* class C */
862 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
865 if (!inet_aton(buf, &net)) {
868 shift = strtol(vnetwork, &end, 10);
870 if (!inet_aton(vnetwork, &mask)) {
873 } else if (shift < 4 || shift > 32) {
876 mask.s_addr = htonl(0xffffffff << (32 - shift));
879 net.s_addr &= mask.s_addr;
880 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
881 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
882 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
885 if (vhost && !inet_aton(vhost, &host)) {
888 if ((host.s_addr & mask.s_addr) != net.s_addr) {
892 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
895 if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
896 dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
900 if (vnameserver && !inet_aton(vnameserver, &dns)) {
903 if ((dns.s_addr & mask.s_addr) != net.s_addr ||
904 dns.s_addr == host.s_addr) {
909 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
914 s = qemu_mallocz(sizeof(SlirpState));
915 s->slirp = slirp_init(restricted, net, mask, host, vhostname,
916 tftp_export, bootfile, dhcp, dns, s);
917 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
919 for (config = slirp_configs; config; config = config->next) {
920 if (config->flags & SLIRP_CFG_HOSTFWD) {
921 if (slirp_hostfwd(s, config->str,
922 config->flags & SLIRP_CFG_LEGACY) < 0)
925 if (slirp_guestfwd(s, config->str,
926 config->flags & SLIRP_CFG_LEGACY) < 0)
932 smb_export = legacy_smb_export;
935 if (slirp_smb(s, smb_export, smbsrv) < 0)
940 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
941 vlan, NULL, model, name, NULL,
942 slirp_receive, NULL, NULL,
943 net_slirp_cleanup, s);
944 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
945 "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
949 static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
955 vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
959 if (strcmp(vc->model, "user")) {
960 monitor_printf(mon, "invalid device specified\n");
965 if (QTAILQ_EMPTY(&slirp_stacks)) {
966 monitor_printf(mon, "user mode network stack not in use\n");
969 return QTAILQ_FIRST(&slirp_stacks);
973 void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
975 struct in_addr host_addr = { .s_addr = INADDR_ANY };
978 const char *src_str, *p;
982 const char *arg1 = qdict_get_str(qdict, "arg1");
983 const char *arg2 = qdict_get_try_str(qdict, "arg2");
984 const char *arg3 = qdict_get_try_str(qdict, "arg3");
987 s = slirp_lookup(mon, arg1, arg2);
990 s = slirp_lookup(mon, NULL, NULL);
997 if (!src_str || !src_str[0])
1001 get_str_sep(buf, sizeof(buf), &p, ':');
1003 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
1005 } else if (!strcmp(buf, "udp")) {
1011 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1014 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1018 host_port = atoi(p);
1020 err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
1021 host_addr, host_port);
1023 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
1024 err ? "removed" : "not found");
1028 monitor_printf(mon, "invalid format\n");
1031 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
1034 struct in_addr host_addr = { .s_addr = INADDR_ANY };
1035 struct in_addr guest_addr = { .s_addr = 0 };
1036 int host_port, guest_port;
1043 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1046 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
1048 } else if (!strcmp(buf, "udp")) {
1054 if (!legacy_format) {
1055 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1058 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
1063 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
1066 host_port = strtol(buf, &end, 0);
1067 if (*end != '\0' || host_port < 1 || host_port > 65535) {
1071 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1074 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
1078 guest_port = strtol(p, &end, 0);
1079 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
1083 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
1085 qemu_error("could not set up host forwarding rule '%s'\n",
1092 qemu_error("invalid host forwarding rule '%s'\n", redir_str);
1096 void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
1098 const char *redir_str;
1100 const char *arg1 = qdict_get_str(qdict, "arg1");
1101 const char *arg2 = qdict_get_try_str(qdict, "arg2");
1102 const char *arg3 = qdict_get_try_str(qdict, "arg3");
1105 s = slirp_lookup(mon, arg1, arg2);
1108 s = slirp_lookup(mon, NULL, NULL);
1112 slirp_hostfwd(s, redir_str, 0);
1117 int net_slirp_redir(const char *redir_str)
1119 struct slirp_config_str *config;
1121 if (QTAILQ_EMPTY(&slirp_stacks)) {
1122 config = qemu_malloc(sizeof(*config));
1123 pstrcpy(config->str, sizeof(config->str), redir_str);
1124 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
1125 config->next = slirp_configs;
1126 slirp_configs = config;
1130 return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
1135 /* automatic user mode samba server configuration */
1136 static void slirp_smb_cleanup(SlirpState *s)
1140 if (s->smb_dir[0] != '\0') {
1141 snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
1143 s->smb_dir[0] = '\0';
1147 static int slirp_smb(SlirpState* s, const char *exported_dir,
1148 struct in_addr vserver_addr)
1150 static int instance;
1152 char smb_cmdline[128];
1155 snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
1156 (long)getpid(), instance++);
1157 if (mkdir(s->smb_dir, 0700) < 0) {
1158 qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
1161 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
1163 f = fopen(smb_conf, "w");
1165 slirp_smb_cleanup(s);
1166 qemu_error("could not create samba server configuration file '%s'\n",
1174 "socket address=127.0.0.1\n"
1175 "pid directory=%s\n"
1176 "lock directory=%s\n"
1177 "log file=%s/log.smbd\n"
1178 "smb passwd file=%s/smbpasswd\n"
1179 "security = share\n"
1193 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
1194 SMBD_COMMAND, smb_conf);
1196 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
1197 slirp_smb_cleanup(s);
1198 qemu_error("conflicting/invalid smbserver address\n");
1204 /* automatic user mode samba server configuration (legacy interface) */
1205 int net_slirp_smb(const char *exported_dir)
1207 struct in_addr vserver_addr = { .s_addr = 0 };
1209 if (legacy_smb_export) {
1210 fprintf(stderr, "-smb given twice\n");
1213 legacy_smb_export = exported_dir;
1214 if (!QTAILQ_EMPTY(&slirp_stacks)) {
1215 return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
1221 #endif /* !defined(_WIN32) */
1224 CharDriverState *hd;
1225 struct in_addr server;
1230 static int guestfwd_can_read(void *opaque)
1232 struct GuestFwd *fwd = opaque;
1233 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
1236 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
1238 struct GuestFwd *fwd = opaque;
1239 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
1242 static int slirp_guestfwd(SlirpState *s, const char *config_str,
1245 struct in_addr server = { .s_addr = 0 };
1246 struct GuestFwd *fwd;
1253 if (legacy_format) {
1254 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1258 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1261 if (strcmp(buf, "tcp") && buf[0] != '\0') {
1264 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
1267 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
1270 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
1274 port = strtol(buf, &end, 10);
1275 if (*end != '\0' || port < 1 || port > 65535) {
1279 fwd = qemu_malloc(sizeof(struct GuestFwd));
1280 snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
1281 fwd->hd = qemu_chr_open(buf, p, NULL);
1283 qemu_error("could not open guest forwarding device '%s'\n", buf);
1288 if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
1289 qemu_error("conflicting/invalid host:port in guest forwarding "
1290 "rule '%s'\n", config_str);
1294 fwd->server = server;
1296 fwd->slirp = s->slirp;
1298 qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
1303 qemu_error("invalid guest forwarding rule '%s'\n", config_str);
1307 void do_info_usernet(Monitor *mon)
1311 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
1312 monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
1313 slirp_connection_info(s->slirp, mon);
1317 #endif /* CONFIG_SLIRP */
1319 #if defined(CONFIG_VDE)
1320 typedef struct VDEState {
1321 VLANClientState *vc;
1325 static void vde_to_qemu(void *opaque)
1327 VDEState *s = opaque;
1331 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
1333 qemu_send_packet(s->vc, buf, size);
1337 static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1339 VDEState *s = vc->opaque;
1343 ret = vde_send(s->vde, (const char *)buf, size, 0);
1344 } while (ret < 0 && errno == EINTR);
1349 static void vde_cleanup(VLANClientState *vc)
1351 VDEState *s = vc->opaque;
1352 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
1357 static int net_vde_init(VLANState *vlan, const char *model,
1358 const char *name, const char *sock,
1359 int port, const char *group, int mode)
1362 char *init_group = (char *)group;
1363 char *init_sock = (char *)sock;
1365 struct vde_open_args args = {
1367 .group = init_group,
1371 s = qemu_mallocz(sizeof(VDEState));
1372 s->vde = vde_open(init_sock, (char *)"QEMU", &args);
1377 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
1378 vlan, NULL, model, name, NULL,
1379 vde_receive, NULL, NULL,
1381 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
1382 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d",
1383 sock, vde_datafd(s->vde));
1388 /* network connection */
1389 typedef struct NetSocketState {
1390 VLANClientState *vc;
1392 int state; /* 0 = getting length, 1 = getting data */
1394 unsigned int packet_len;
1396 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
1399 typedef struct NetSocketListenState {
1404 } NetSocketListenState;
1406 /* XXX: we consider we can send the whole packet without blocking */
1407 static ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1409 NetSocketState *s = vc->opaque;
1413 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
1414 return send_all(s->fd, buf, size);
1417 static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
1419 NetSocketState *s = vc->opaque;
1421 return sendto(s->fd, (const void *)buf, size, 0,
1422 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
1425 static void net_socket_send(void *opaque)
1427 NetSocketState *s = opaque;
1433 size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
1435 err = socket_error();
1436 if (err != EWOULDBLOCK)
1438 } else if (size == 0) {
1439 /* end of connection */
1441 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1447 /* reassemble a packet from the network */
1453 memcpy(s->buf + s->index, buf, l);
1457 if (s->index == 4) {
1459 s->packet_len = ntohl(*(uint32_t *)s->buf);
1465 l = s->packet_len - s->index;
1468 if (s->index + l <= sizeof(s->buf)) {
1469 memcpy(s->buf + s->index, buf, l);
1471 fprintf(stderr, "serious error: oversized packet received,"
1472 "connection terminated.\n");
1480 if (s->index >= s->packet_len) {
1481 qemu_send_packet(s->vc, s->buf, s->packet_len);
1490 static void net_socket_send_dgram(void *opaque)
1492 NetSocketState *s = opaque;
1495 size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
1499 /* end of connection */
1500 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1503 qemu_send_packet(s->vc, s->buf, size);
1506 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1511 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1512 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1513 inet_ntoa(mcastaddr->sin_addr),
1514 (int)ntohl(mcastaddr->sin_addr.s_addr));
1518 fd = socket(PF_INET, SOCK_DGRAM, 0);
1520 perror("socket(PF_INET, SOCK_DGRAM)");
1525 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1526 (const char *)&val, sizeof(val));
1528 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1532 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1538 /* Add host to multicast group */
1539 imr.imr_multiaddr = mcastaddr->sin_addr;
1540 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1542 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1543 (const char *)&imr, sizeof(struct ip_mreq));
1545 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1549 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1551 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1552 (const char *)&val, sizeof(val));
1554 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1558 socket_set_nonblock(fd);
1566 static void net_socket_cleanup(VLANClientState *vc)
1568 NetSocketState *s = vc->opaque;
1569 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1574 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan,
1577 int fd, int is_connected)
1579 struct sockaddr_in saddr;
1581 socklen_t saddr_len;
1584 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1585 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1586 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1590 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1592 if (saddr.sin_addr.s_addr==0) {
1593 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1597 /* clone dgram socket */
1598 newfd = net_socket_mcast_create(&saddr);
1600 /* error already reported by net_socket_mcast_create() */
1604 /* clone newfd to fd, close newfd */
1609 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1610 fd, strerror(errno));
1615 s = qemu_mallocz(sizeof(NetSocketState));
1618 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
1619 vlan, NULL, model, name, NULL,
1620 net_socket_receive_dgram, NULL, NULL,
1621 net_socket_cleanup, s);
1622 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1624 /* mcast: save bound address as dst */
1625 if (is_connected) s->dgram_dst=saddr;
1627 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1628 "socket: fd=%d (%s mcast=%s:%d)",
1629 fd, is_connected? "cloned" : "",
1630 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1634 static void net_socket_connect(void *opaque)
1636 NetSocketState *s = opaque;
1637 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1640 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan,
1643 int fd, int is_connected)
1646 s = qemu_mallocz(sizeof(NetSocketState));
1648 s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SOCKET,
1649 vlan, NULL, model, name, NULL,
1650 net_socket_receive, NULL, NULL,
1651 net_socket_cleanup, s);
1652 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1653 "socket: fd=%d", fd);
1655 net_socket_connect(s);
1657 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1662 static NetSocketState *net_socket_fd_init(VLANState *vlan,
1663 const char *model, const char *name,
1664 int fd, int is_connected)
1666 int so_type = -1, optlen=sizeof(so_type);
1668 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1669 (socklen_t *)&optlen)< 0) {
1670 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1675 return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected);
1677 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1679 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1680 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1681 return net_socket_fd_init_stream(vlan, model, name, fd, is_connected);
1686 static void net_socket_accept(void *opaque)
1688 NetSocketListenState *s = opaque;
1690 struct sockaddr_in saddr;
1695 len = sizeof(saddr);
1696 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1697 if (fd < 0 && errno != EINTR) {
1699 } else if (fd >= 0) {
1703 s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1);
1707 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1708 "socket: connection from %s:%d",
1709 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1713 static int net_socket_listen_init(VLANState *vlan,
1716 const char *host_str)
1718 NetSocketListenState *s;
1720 struct sockaddr_in saddr;
1722 if (parse_host_port(&saddr, host_str) < 0)
1725 s = qemu_mallocz(sizeof(NetSocketListenState));
1727 fd = socket(PF_INET, SOCK_STREAM, 0);
1732 socket_set_nonblock(fd);
1734 /* allow fast reuse */
1736 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1738 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1743 ret = listen(fd, 0);
1749 s->model = qemu_strdup(model);
1750 s->name = name ? qemu_strdup(name) : NULL;
1752 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1756 static int net_socket_connect_init(VLANState *vlan,
1759 const char *host_str)
1762 int fd, connected, ret, err;
1763 struct sockaddr_in saddr;
1765 if (parse_host_port(&saddr, host_str) < 0)
1768 fd = socket(PF_INET, SOCK_STREAM, 0);
1773 socket_set_nonblock(fd);
1777 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1779 err = socket_error();
1780 if (err == EINTR || err == EWOULDBLOCK) {
1781 } else if (err == EINPROGRESS) {
1784 } else if (err == WSAEALREADY) {
1797 s = net_socket_fd_init(vlan, model, name, fd, connected);
1800 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1801 "socket: connect to %s:%d",
1802 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1806 static int net_socket_mcast_init(VLANState *vlan,
1809 const char *host_str)
1813 struct sockaddr_in saddr;
1815 if (parse_host_port(&saddr, host_str) < 0)
1819 fd = net_socket_mcast_create(&saddr);
1823 s = net_socket_fd_init(vlan, model, name, fd, 0);
1827 s->dgram_dst = saddr;
1829 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1830 "socket: mcast=%s:%d",
1831 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1836 typedef struct DumpState {
1837 VLANClientState *pcap_vc;
1842 #define PCAP_MAGIC 0xa1b2c3d4
1844 struct pcap_file_hdr {
1846 uint16_t version_major;
1847 uint16_t version_minor;
1854 struct pcap_sf_pkthdr {
1863 static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
1865 DumpState *s = vc->opaque;
1866 struct pcap_sf_pkthdr hdr;
1870 /* Early return in case of previous error. */
1875 ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
1876 caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
1878 hdr.ts.tv_sec = ts / 1000000;
1879 hdr.ts.tv_usec = ts % 1000000;
1880 hdr.caplen = caplen;
1882 if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
1883 write(s->fd, buf, caplen) != caplen) {
1884 qemu_log("-net dump write error - stop dump\n");
1892 static void net_dump_cleanup(VLANClientState *vc)
1894 DumpState *s = vc->opaque;
1900 static int net_dump_init(VLANState *vlan, const char *device,
1901 const char *name, const char *filename, int len)
1903 struct pcap_file_hdr hdr;
1906 s = qemu_malloc(sizeof(DumpState));
1908 s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
1910 qemu_error("-net dump: can't open %s\n", filename);
1914 s->pcap_caplen = len;
1916 hdr.magic = PCAP_MAGIC;
1917 hdr.version_major = 2;
1918 hdr.version_minor = 4;
1921 hdr.snaplen = s->pcap_caplen;
1924 if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
1925 qemu_error("-net dump write error: %s\n", strerror(errno));
1931 s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
1932 vlan, NULL, device, name, NULL,
1933 dump_receive, NULL, NULL,
1934 net_dump_cleanup, s);
1935 snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
1936 "dump to %s (len=%d)", filename, len);
1940 /* find or alloc a new VLAN */
1941 VLANState *qemu_find_vlan(int id, int allocate)
1945 QTAILQ_FOREACH(vlan, &vlans, next) {
1946 if (vlan->id == id) {
1955 vlan = qemu_mallocz(sizeof(VLANState));
1957 QTAILQ_INIT(&vlan->clients);
1959 vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
1960 qemu_vlan_deliver_packet_iov,
1963 QTAILQ_INSERT_TAIL(&vlans, vlan, next);
1968 VLANClientState *qemu_find_netdev(const char *id)
1970 VLANClientState *vc;
1972 QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
1973 if (!strcmp(vc->name, id)) {
1981 static int nic_get_free_idx(void)
1985 for (index = 0; index < MAX_NICS; index++)
1986 if (!nd_table[index].used)
1991 int qemu_show_nic_models(const char *arg, const char *const *models)
1995 if (!arg || strcmp(arg, "?"))
1998 fprintf(stderr, "qemu: Supported NIC models: ");
1999 for (i = 0 ; models[i]; i++)
2000 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
2004 void qemu_check_nic_model(NICInfo *nd, const char *model)
2006 const char *models[2];
2011 if (qemu_show_nic_models(nd->model, models))
2013 if (qemu_find_nic_model(nd, models, model) < 0)
2017 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
2018 const char *default_model)
2023 nd->model = qemu_strdup(default_model);
2025 for (i = 0 ; models[i]; i++) {
2026 if (strcmp(nd->model, models[i]) == 0)
2030 qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
2034 int net_handle_fd_param(Monitor *mon, const char *param)
2036 if (!qemu_isdigit(param[0])) {
2039 fd = monitor_get_fd(mon, param);
2041 qemu_error("No file descriptor named %s found", param);
2047 return strtol(param, NULL, 0);
2051 static int net_init_nic(QemuOpts *opts,
2060 idx = nic_get_free_idx();
2061 if (idx == -1 || nb_nics >= MAX_NICS) {
2062 qemu_error("Too Many NICs\n");
2066 nd = &nd_table[idx];
2068 memset(nd, 0, sizeof(*nd));
2070 if ((netdev = qemu_opt_get(opts, "netdev"))) {
2071 nd->netdev = qemu_find_netdev(netdev);
2073 qemu_error("netdev '%s' not found\n", netdev);
2081 nd->name = qemu_strdup(name);
2083 if (qemu_opt_get(opts, "model")) {
2084 nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
2086 if (qemu_opt_get(opts, "addr")) {
2087 nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
2090 nd->macaddr[0] = 0x52;
2091 nd->macaddr[1] = 0x54;
2092 nd->macaddr[2] = 0x00;
2093 nd->macaddr[3] = 0x12;
2094 nd->macaddr[4] = 0x34;
2095 nd->macaddr[5] = 0x56 + idx;
2097 if (qemu_opt_get(opts, "macaddr") &&
2098 parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
2099 qemu_error("invalid syntax for ethernet address\n");
2103 nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
2104 if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
2105 (nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
2106 qemu_error("invalid # of vectors: %d\n", nd->nvectors);
2112 nd->vlan->nb_guest_devs++;
2119 #if defined(CONFIG_SLIRP)
2120 static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
2122 struct slirp_config_str *config;
2124 if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
2128 config = qemu_mallocz(sizeof(*config));
2130 pstrcpy(config->str, sizeof(config->str), value);
2132 if (!strcmp(name, "hostfwd")) {
2133 config->flags = SLIRP_CFG_HOSTFWD;
2136 config->next = slirp_configs;
2137 slirp_configs = config;
2142 static int net_init_slirp(QemuOpts *opts,
2147 struct slirp_config_str *config;
2149 const char *vhostname;
2150 const char *vdhcp_start;
2151 const char *vnamesrv;
2152 const char *tftp_export;
2153 const char *bootfile;
2154 const char *smb_export;
2155 const char *vsmbsrv;
2160 vhost = qemu_opt_get(opts, "host");
2161 vhostname = qemu_opt_get(opts, "hostname");
2162 vdhcp_start = qemu_opt_get(opts, "dhcpstart");
2163 vnamesrv = qemu_opt_get(opts, "dns");
2164 tftp_export = qemu_opt_get(opts, "tftp");
2165 bootfile = qemu_opt_get(opts, "bootfile");
2166 smb_export = qemu_opt_get(opts, "smb");
2167 vsmbsrv = qemu_opt_get(opts, "smbserver");
2169 if (qemu_opt_get(opts, "ip")) {
2170 const char *ip = qemu_opt_get(opts, "ip");
2171 int l = strlen(ip) + strlen("/24") + 1;
2173 vnet = qemu_malloc(l);
2175 /* emulate legacy ip= parameter */
2176 pstrcpy(vnet, l, ip);
2177 pstrcat(vnet, l, "/24");
2180 if (qemu_opt_get(opts, "net")) {
2184 vnet = qemu_strdup(qemu_opt_get(opts, "net"));
2187 if (qemu_opt_get(opts, "restrict") &&
2188 qemu_opt_get(opts, "restrict")[0] == 'y') {
2192 qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
2194 ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
2195 vhostname, tftp_export, bootfile, vdhcp_start,
2196 vnamesrv, smb_export, vsmbsrv);
2198 while (slirp_configs) {
2199 config = slirp_configs;
2200 slirp_configs = config->next;
2204 if (ret != -1 && vlan) {
2205 vlan->nb_host_devs++;
2212 #endif /* CONFIG_SLIRP */
2214 static int net_init_socket(QemuOpts *opts,
2219 if (qemu_opt_get(opts, "fd")) {
2222 if (qemu_opt_get(opts, "listen") ||
2223 qemu_opt_get(opts, "connect") ||
2224 qemu_opt_get(opts, "mcast")) {
2225 qemu_error("listen=, connect= and mcast= is invalid with fd=\n");
2229 fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
2234 if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
2238 } else if (qemu_opt_get(opts, "listen")) {
2241 if (qemu_opt_get(opts, "fd") ||
2242 qemu_opt_get(opts, "connect") ||
2243 qemu_opt_get(opts, "mcast")) {
2244 qemu_error("fd=, connect= and mcast= is invalid with listen=\n");
2248 listen = qemu_opt_get(opts, "listen");
2250 if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
2253 } else if (qemu_opt_get(opts, "connect")) {
2254 const char *connect;
2256 if (qemu_opt_get(opts, "fd") ||
2257 qemu_opt_get(opts, "listen") ||
2258 qemu_opt_get(opts, "mcast")) {
2259 qemu_error("fd=, listen= and mcast= is invalid with connect=\n");
2263 connect = qemu_opt_get(opts, "connect");
2265 if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
2268 } else if (qemu_opt_get(opts, "mcast")) {
2271 if (qemu_opt_get(opts, "fd") ||
2272 qemu_opt_get(opts, "connect") ||
2273 qemu_opt_get(opts, "listen")) {
2274 qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
2278 mcast = qemu_opt_get(opts, "mcast");
2280 if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
2284 qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
2289 vlan->nb_host_devs++;
2296 static int net_init_vde(QemuOpts *opts,
2305 sock = qemu_opt_get(opts, "sock");
2306 group = qemu_opt_get(opts, "group");
2308 port = qemu_opt_get_number(opts, "port", 0);
2309 mode = qemu_opt_get_number(opts, "mode", 0700);
2311 if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
2316 vlan->nb_host_devs++;
2323 static int net_init_dump(QemuOpts *opts,
2334 file = qemu_opt_get(opts, "file");
2336 snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
2340 len = qemu_opt_get_size(opts, "len", 65536);
2342 return net_dump_init(vlan, "dump", name, file, len);
2345 #define NET_COMMON_PARAMS_DESC \
2348 .type = QEMU_OPT_STRING, \
2349 .help = "net client type (nic, tap etc.)", \
2352 .type = QEMU_OPT_NUMBER, \
2353 .help = "vlan number", \
2356 .type = QEMU_OPT_STRING, \
2357 .help = "identifier for monitor commands", \
2360 typedef int (*net_client_init_func)(QemuOpts *opts,
2365 /* magic number, but compiler will warn if too small */
2366 #define NET_MAX_DESC 20
2370 net_client_init_func init;
2371 QemuOptDesc desc[NET_MAX_DESC];
2372 } net_client_types[] = {
2376 NET_COMMON_PARAMS_DESC,
2377 { /* end of list */ }
2381 .init = net_init_nic,
2383 NET_COMMON_PARAMS_DESC,
2386 .type = QEMU_OPT_STRING,
2387 .help = "id of -netdev to connect to",
2391 .type = QEMU_OPT_STRING,
2392 .help = "MAC address",
2395 .type = QEMU_OPT_STRING,
2396 .help = "device model (e1000, rtl8139, virtio etc.)",
2399 .type = QEMU_OPT_STRING,
2400 .help = "PCI device address",
2403 .type = QEMU_OPT_NUMBER,
2404 .help = "number of MSI-x vectors, 0 to disable MSI-X",
2406 { /* end of list */ }
2411 .init = net_init_slirp,
2413 NET_COMMON_PARAMS_DESC,
2416 .type = QEMU_OPT_STRING,
2417 .help = "client hostname reported by the builtin DHCP server",
2420 .type = QEMU_OPT_STRING,
2421 .help = "isolate the guest from the host (y|yes|n|no)",
2424 .type = QEMU_OPT_STRING,
2425 .help = "legacy parameter, use net= instead",
2428 .type = QEMU_OPT_STRING,
2429 .help = "IP address and optional netmask",
2432 .type = QEMU_OPT_STRING,
2433 .help = "guest-visible address of the host",
2436 .type = QEMU_OPT_STRING,
2437 .help = "root directory of the built-in TFTP server",
2440 .type = QEMU_OPT_STRING,
2441 .help = "BOOTP filename, for use with tftp=",
2443 .name = "dhcpstart",
2444 .type = QEMU_OPT_STRING,
2445 .help = "the first of the 16 IPs the built-in DHCP server can assign",
2448 .type = QEMU_OPT_STRING,
2449 .help = "guest-visible address of the virtual nameserver",
2452 .type = QEMU_OPT_STRING,
2453 .help = "root directory of the built-in SMB server",
2455 .name = "smbserver",
2456 .type = QEMU_OPT_STRING,
2457 .help = "IP address of the built-in SMB server",
2460 .type = QEMU_OPT_STRING,
2461 .help = "guest port number to forward incoming TCP or UDP connections",
2464 .type = QEMU_OPT_STRING,
2465 .help = "IP address and port to forward guest TCP connections",
2467 { /* end of list */ }
2472 .init = net_init_tap,
2474 NET_COMMON_PARAMS_DESC,
2477 .type = QEMU_OPT_STRING,
2478 .help = "interface name",
2483 .type = QEMU_OPT_STRING,
2484 .help = "file descriptor of an already opened tap",
2487 .type = QEMU_OPT_STRING,
2488 .help = "script to initialize the interface",
2490 .name = "downscript",
2491 .type = QEMU_OPT_STRING,
2492 .help = "script to shut down the interface",
2495 .type = QEMU_OPT_SIZE,
2496 .help = "send buffer limit"
2499 .type = QEMU_OPT_BOOL,
2500 .help = "enable the IFF_VNET_HDR flag on the tap interface"
2503 { /* end of list */ }
2507 .init = net_init_socket,
2509 NET_COMMON_PARAMS_DESC,
2512 .type = QEMU_OPT_STRING,
2513 .help = "file descriptor of an already opened socket",
2516 .type = QEMU_OPT_STRING,
2517 .help = "port number, and optional hostname, to listen on",
2520 .type = QEMU_OPT_STRING,
2521 .help = "port number, and optional hostname, to connect to",
2524 .type = QEMU_OPT_STRING,
2525 .help = "UDP multicast address and port number",
2527 { /* end of list */ }
2532 .init = net_init_vde,
2534 NET_COMMON_PARAMS_DESC,
2537 .type = QEMU_OPT_STRING,
2538 .help = "socket path",
2541 .type = QEMU_OPT_NUMBER,
2542 .help = "port number",
2545 .type = QEMU_OPT_STRING,
2546 .help = "group owner of socket",
2549 .type = QEMU_OPT_NUMBER,
2550 .help = "permissions for socket",
2552 { /* end of list */ }
2557 .init = net_init_dump,
2559 NET_COMMON_PARAMS_DESC,
2562 .type = QEMU_OPT_SIZE,
2563 .help = "per-packet size limit (64k default)",
2566 .type = QEMU_OPT_STRING,
2567 .help = "dump file path (default is qemu-vlan0.pcap)",
2569 { /* end of list */ }
2572 { /* end of list */ }
2575 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
2581 type = qemu_opt_get(opts, "type");
2583 qemu_error("No type specified for -net\n");
2588 if (strcmp(type, "tap") != 0 &&
2590 strcmp(type, "user") != 0 &&
2593 strcmp(type, "vde") != 0 &&
2595 strcmp(type, "socket") != 0) {
2596 qemu_error("The '%s' network backend type is not valid with -netdev\n",
2601 if (qemu_opt_get(opts, "vlan")) {
2602 qemu_error("The 'vlan' parameter is not valid with -netdev\n");
2605 if (qemu_opt_get(opts, "name")) {
2606 qemu_error("The 'name' parameter is not valid with -netdev\n");
2609 if (!qemu_opts_id(opts)) {
2610 qemu_error("The id= parameter is required with -netdev\n");
2615 name = qemu_opts_id(opts);
2617 name = qemu_opt_get(opts, "name");
2620 for (i = 0; net_client_types[i].type != NULL; i++) {
2621 if (!strcmp(net_client_types[i].type, type)) {
2622 VLANState *vlan = NULL;
2624 if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
2628 /* Do not add to a vlan if it's a -netdev or a nic with a
2629 * netdev= parameter. */
2631 (strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
2632 vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
2635 if (net_client_types[i].init) {
2636 return net_client_types[i].init(opts, mon, name, vlan);
2643 qemu_error("Invalid -net type '%s'\n", type);
2647 void net_client_uninit(NICInfo *nd)
2650 nd->vlan->nb_guest_devs--;
2654 qemu_free(nd->model);
2655 qemu_free(nd->name);
2656 qemu_free(nd->devaddr);
2661 static int net_host_check_device(const char *device)
2664 const char *valid_param_list[] = { "tap", "socket", "dump"
2672 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
2673 if (!strncmp(valid_param_list[i], device,
2674 strlen(valid_param_list[i])))
2681 void net_host_device_add(Monitor *mon, const QDict *qdict)
2683 const char *device = qdict_get_str(qdict, "device");
2684 const char *opts_str = qdict_get_try_str(qdict, "opts");
2687 if (!net_host_check_device(device)) {
2688 monitor_printf(mon, "invalid host network device %s\n", device);
2692 opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
2694 monitor_printf(mon, "parsing network options '%s' failed\n",
2695 opts_str ? opts_str : "");
2699 qemu_opt_set(opts, "type", device);
2701 if (net_client_init(mon, opts, 0) < 0) {
2702 monitor_printf(mon, "adding host network device %s failed\n", device);
2706 void net_host_device_remove(Monitor *mon, const QDict *qdict)
2708 VLANClientState *vc;
2709 int vlan_id = qdict_get_int(qdict, "vlan_id");
2710 const char *device = qdict_get_str(qdict, "device");
2712 vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
2716 if (!net_host_check_device(vc->model)) {
2717 monitor_printf(mon, "invalid host network device %s\n", device);
2720 qemu_del_vlan_client(vc);
2723 void net_set_boot_mask(int net_boot_mask)
2727 /* Only the first four NICs may be bootable */
2728 net_boot_mask = net_boot_mask & 0xF;
2730 for (i = 0; i < nb_nics; i++) {
2731 if (net_boot_mask & (1 << i)) {
2732 nd_table[i].bootable = 1;
2733 net_boot_mask &= ~(1 << i);
2737 if (net_boot_mask) {
2738 fprintf(stderr, "Cannot boot from non-existent NIC\n");
2743 void do_info_network(Monitor *mon)
2747 QTAILQ_FOREACH(vlan, &vlans, next) {
2748 VLANClientState *vc;
2750 monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
2752 QTAILQ_FOREACH(vc, &vlan->clients, next) {
2753 monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
2758 void do_set_link(Monitor *mon, const QDict *qdict)
2761 VLANClientState *vc = NULL;
2762 const char *name = qdict_get_str(qdict, "name");
2763 const char *up_or_down = qdict_get_str(qdict, "up_or_down");
2765 QTAILQ_FOREACH(vlan, &vlans, next) {
2766 QTAILQ_FOREACH(vc, &vlan->clients, next) {
2767 if (strcmp(vc->name, name) == 0) {
2775 monitor_printf(mon, "could not find network device '%s'\n", name);
2779 if (strcmp(up_or_down, "up") == 0)
2781 else if (strcmp(up_or_down, "down") == 0)
2784 monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
2785 "valid\n", up_or_down);
2787 if (vc->link_status_changed)
2788 vc->link_status_changed(vc);
2791 void net_cleanup(void)
2794 VLANClientState *vc, *next_vc;
2796 QTAILQ_FOREACH(vlan, &vlans, next) {
2797 QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
2798 qemu_del_vlan_client(vc);
2802 QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
2803 qemu_del_vlan_client(vc);
2807 static void net_check_clients(void)
2811 QTAILQ_FOREACH(vlan, &vlans, next) {
2812 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
2814 if (vlan->nb_guest_devs == 0)
2815 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
2816 if (vlan->nb_host_devs == 0)
2818 "Warning: vlan %d is not connected to host network\n",
2823 static int net_init_client(QemuOpts *opts, void *dummy)
2825 if (net_client_init(NULL, opts, 0) < 0)
2830 static int net_init_netdev(QemuOpts *opts, void *dummy)
2832 return net_client_init(NULL, opts, 1);
2835 int net_init_clients(void)
2837 if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
2838 /* if no clients, we use a default config */
2839 qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
2841 qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
2845 QTAILQ_INIT(&vlans);
2846 QTAILQ_INIT(&non_vlan_clients);
2848 if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
2851 if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
2855 net_check_clients();
2860 int net_client_parse(QemuOptsList *opts_list, const char *optarg)
2862 #if defined(CONFIG_SLIRP)
2863 /* handle legacy -net channel,port:chr */
2864 if (!strcmp(opts_list->name, "net") &&
2865 !strncmp(optarg, "channel,", strlen("channel,"))) {
2868 optarg += strlen("channel,");
2870 if (QTAILQ_EMPTY(&slirp_stacks)) {
2871 struct slirp_config_str *config;
2873 config = qemu_malloc(sizeof(*config));
2874 pstrcpy(config->str, sizeof(config->str), optarg);
2875 config->flags = SLIRP_CFG_LEGACY;
2876 config->next = slirp_configs;
2877 slirp_configs = config;
2880 ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
2886 if (!qemu_opts_parse(opts_list, optarg, "type")) {