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
25 #include "qemu/osdep.h"
26 #include "net/slirp.h"
36 #include "monitor/monitor.h"
37 #include "qemu/error-report.h"
38 #include "qemu/sockets.h"
39 #include "slirp/libslirp.h"
40 #include "slirp/ip6.h"
41 #include "chardev/char-fe.h"
42 #include "sysemu/sysemu.h"
43 #include "qemu/cutils.h"
44 #include "qapi/error.h"
45 #include "qapi/qmp/qdict.h"
47 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
58 if (len > buf_size - 1)
67 /* slirp network adapter */
69 #define SLIRP_CFG_HOSTFWD 1
70 #define SLIRP_CFG_LEGACY 2
72 struct slirp_config_str {
73 struct slirp_config_str *next;
79 typedef struct SlirpState {
81 QTAILQ_ENTRY(SlirpState) entry;
83 Notifier exit_notifier;
89 static struct slirp_config_str *slirp_configs;
90 const char *legacy_tftp_prefix;
91 const char *legacy_bootp_filename;
92 static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
93 QTAILQ_HEAD_INITIALIZER(slirp_stacks);
95 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
96 int legacy_format, Error **errp);
97 static int slirp_guestfwd(SlirpState *s, const char *config_str,
98 int legacy_format, Error **errp);
101 static const char *legacy_smb_export;
103 static int slirp_smb(SlirpState *s, const char *exported_dir,
104 struct in_addr vserver_addr, Error **errp);
105 static void slirp_smb_cleanup(SlirpState *s);
107 static inline void slirp_smb_cleanup(SlirpState *s) { }
110 void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
112 SlirpState *s = opaque;
114 qemu_send_packet(&s->nc, pkt, pkt_len);
117 static ssize_t net_slirp_receive(NetClientState *nc, const uint8_t *buf, size_t size)
119 SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
121 slirp_input(s->slirp, buf, size);
126 static void slirp_smb_exit(Notifier *n, void *data)
128 SlirpState *s = container_of(n, SlirpState, exit_notifier);
129 slirp_smb_cleanup(s);
132 static void net_slirp_cleanup(NetClientState *nc)
134 SlirpState *s = DO_UPCAST(SlirpState, nc, nc);
136 slirp_cleanup(s->slirp);
137 if (s->exit_notifier.notify) {
138 qemu_remove_exit_notifier(&s->exit_notifier);
140 slirp_smb_cleanup(s);
141 QTAILQ_REMOVE(&slirp_stacks, s, entry);
144 static NetClientInfo net_slirp_info = {
145 .type = NET_CLIENT_DRIVER_USER,
146 .size = sizeof(SlirpState),
147 .receive = net_slirp_receive,
148 .cleanup = net_slirp_cleanup,
151 static int net_slirp_init(NetClientState *peer, const char *model,
152 const char *name, int restricted,
153 bool ipv4, const char *vnetwork, const char *vhost,
154 bool ipv6, const char *vprefix6, int vprefix6_len,
156 const char *vhostname, const char *tftp_export,
157 const char *bootfile, const char *vdhcp_start,
158 const char *vnameserver, const char *vnameserver6,
159 const char *smb_export, const char *vsmbserver,
160 const char **dnssearch, const char *vdomainname,
163 /* default settings according to historic slirp */
164 struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
165 struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
166 struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
167 struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
168 struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
169 struct in6_addr ip6_prefix;
170 struct in6_addr ip6_host;
171 struct in6_addr ip6_dns;
173 struct in_addr smbsrv = { .s_addr = 0 };
181 struct slirp_config_str *config;
183 if (!ipv4 && (vnetwork || vhost || vnameserver)) {
184 error_setg(errp, "IPv4 disabled but netmask/host/dns provided");
188 if (!ipv6 && (vprefix6 || vhost6 || vnameserver6)) {
189 error_setg(errp, "IPv6 disabled but prefix/host6/dns6 provided");
193 if (!ipv4 && !ipv6) {
194 /* It doesn't make sense to disable both */
195 error_setg(errp, "IPv4 and IPv6 disabled");
200 tftp_export = legacy_tftp_prefix;
203 bootfile = legacy_bootp_filename;
207 if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
208 if (!inet_aton(vnetwork, &net)) {
209 error_setg(errp, "Failed to parse netmask");
212 addr = ntohl(net.s_addr);
213 if (!(addr & 0x80000000)) {
214 mask.s_addr = htonl(0xff000000); /* class A */
215 } else if ((addr & 0xfff00000) == 0xac100000) {
216 mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
217 } else if ((addr & 0xc0000000) == 0x80000000) {
218 mask.s_addr = htonl(0xffff0000); /* class B */
219 } else if ((addr & 0xffff0000) == 0xc0a80000) {
220 mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
221 } else if ((addr & 0xffff0000) == 0xc6120000) {
222 mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
223 } else if ((addr & 0xe0000000) == 0xe0000000) {
224 mask.s_addr = htonl(0xffffff00); /* class C */
226 mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
229 if (!inet_aton(buf, &net)) {
230 error_setg(errp, "Failed to parse netmask");
233 shift = strtol(vnetwork, &end, 10);
235 if (!inet_aton(vnetwork, &mask)) {
237 "Failed to parse netmask (trailing chars)");
240 } else if (shift < 4 || shift > 32) {
242 "Invalid netmask provided (must be in range 4-32)");
245 mask.s_addr = htonl(0xffffffff << (32 - shift));
248 net.s_addr &= mask.s_addr;
249 host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
250 dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
251 dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
254 if (vhost && !inet_aton(vhost, &host)) {
255 error_setg(errp, "Failed to parse host");
258 if ((host.s_addr & mask.s_addr) != net.s_addr) {
259 error_setg(errp, "Host doesn't belong to network");
263 if (vnameserver && !inet_aton(vnameserver, &dns)) {
264 error_setg(errp, "Failed to parse DNS");
267 if ((dns.s_addr & mask.s_addr) != net.s_addr) {
268 error_setg(errp, "DNS doesn't belong to network");
271 if (dns.s_addr == host.s_addr) {
272 error_setg(errp, "DNS must be different from host");
276 if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
277 error_setg(errp, "Failed to parse DHCP start address");
280 if ((dhcp.s_addr & mask.s_addr) != net.s_addr) {
281 error_setg(errp, "DHCP doesn't belong to network");
284 if (dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
285 error_setg(errp, "DNS must be different from host and DNS");
290 if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
291 error_setg(errp, "Failed to parse SMB address");
296 #if defined(_WIN32) && (_WIN32_WINNT < 0x0600)
297 /* No inet_pton helper before Vista... */
300 error_setg(errp, "IPv6 prefix not supported");
303 memset(&ip6_prefix, 0, sizeof(ip6_prefix));
304 ip6_prefix.s6_addr[0] = 0xfe;
305 ip6_prefix.s6_addr[1] = 0xc0;
310 if (!inet_pton(AF_INET6, vprefix6, &ip6_prefix)) {
311 error_setg(errp, "Failed to parse IPv6 prefix");
319 if (vprefix6_len < 0 || vprefix6_len > 126) {
321 "Invalid prefix provided (prefix len must be in range 0-126");
326 #if defined(_WIN32) && (_WIN32_WINNT < 0x0600)
327 error_setg(errp, "IPv6 host not supported");
330 if (!inet_pton(AF_INET6, vhost6, &ip6_host)) {
331 error_setg(errp, "Failed to parse IPv6 host");
334 if (!in6_equal_net(&ip6_prefix, &ip6_host, vprefix6_len)) {
335 error_setg(errp, "IPv6 Host doesn't belong to network");
340 ip6_host = ip6_prefix;
341 ip6_host.s6_addr[15] |= 2;
345 #if defined(_WIN32) && (_WIN32_WINNT < 0x0600)
346 error_setg(errp, "IPv6 DNS not supported");
349 if (!inet_pton(AF_INET6, vnameserver6, &ip6_dns)) {
350 error_setg(errp, "Failed to parse IPv6 DNS");
353 if (!in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) {
354 error_setg(errp, "IPv6 DNS doesn't belong to network");
359 ip6_dns = ip6_prefix;
360 ip6_dns.s6_addr[15] |= 3;
363 if (vdomainname && !*vdomainname) {
364 error_setg(errp, "'domainname' parameter cannot be empty");
369 nc = qemu_new_net_client(&net_slirp_info, peer, model, name);
371 snprintf(nc->info_str, sizeof(nc->info_str),
372 "net=%s,restrict=%s", inet_ntoa(net),
373 restricted ? "on" : "off");
375 s = DO_UPCAST(SlirpState, nc, nc);
377 s->slirp = slirp_init(restricted, ipv4, net, mask, host,
378 ipv6, ip6_prefix, vprefix6_len, ip6_host,
379 vhostname, tftp_export, bootfile, dhcp,
380 dns, ip6_dns, dnssearch, vdomainname, s);
381 QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
383 for (config = slirp_configs; config; config = config->next) {
384 if (config->flags & SLIRP_CFG_HOSTFWD) {
385 if (slirp_hostfwd(s, config->str,
386 config->flags & SLIRP_CFG_LEGACY, errp) < 0) {
390 if (slirp_guestfwd(s, config->str,
391 config->flags & SLIRP_CFG_LEGACY, errp) < 0) {
398 smb_export = legacy_smb_export;
401 if (slirp_smb(s, smb_export, smbsrv, errp) < 0) {
407 s->exit_notifier.notify = slirp_smb_exit;
408 qemu_add_exit_notifier(&s->exit_notifier);
412 qemu_del_net_client(nc);
416 static SlirpState *slirp_lookup(Monitor *mon, const char *hub_id,
422 nc = net_hub_find_client_by_name(strtol(hub_id, NULL, 0), name);
424 monitor_printf(mon, "unrecognized (hub-id, stackname) pair\n");
428 nc = qemu_find_netdev(name);
430 monitor_printf(mon, "unrecognized netdev id '%s'\n", name);
434 if (strcmp(nc->model, "user")) {
435 monitor_printf(mon, "invalid device specified\n");
438 return DO_UPCAST(SlirpState, nc, nc);
440 if (QTAILQ_EMPTY(&slirp_stacks)) {
441 monitor_printf(mon, "user mode network stack not in use\n");
444 return QTAILQ_FIRST(&slirp_stacks);
448 void hmp_hostfwd_remove(Monitor *mon, const QDict *qdict)
450 struct in_addr host_addr = { .s_addr = INADDR_ANY };
453 const char *src_str, *p;
457 const char *arg1 = qdict_get_str(qdict, "arg1");
458 const char *arg2 = qdict_get_try_str(qdict, "arg2");
459 const char *arg3 = qdict_get_try_str(qdict, "arg3");
462 s = slirp_lookup(mon, arg1, arg2);
465 s = slirp_lookup(mon, NULL, arg1);
468 s = slirp_lookup(mon, NULL, NULL);
476 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
480 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
482 } else if (!strcmp(buf, "udp")) {
488 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
491 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
495 if (qemu_strtoi(p, NULL, 10, &host_port)) {
499 err = slirp_remove_hostfwd(s->slirp, is_udp, host_addr, host_port);
501 monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
502 err ? "not found" : "removed");
506 monitor_printf(mon, "invalid format\n");
509 static int slirp_hostfwd(SlirpState *s, const char *redir_str,
510 int legacy_format, Error **errp)
512 struct in_addr host_addr = { .s_addr = INADDR_ANY };
513 struct in_addr guest_addr = { .s_addr = 0 };
514 int host_port, guest_port;
519 const char *fail_reason = "Unknown reason";
522 if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
523 fail_reason = "No : separators";
526 if (!strcmp(buf, "tcp") || buf[0] == '\0') {
528 } else if (!strcmp(buf, "udp")) {
531 fail_reason = "Bad protocol name";
535 if (!legacy_format) {
536 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
537 fail_reason = "Missing : separator";
540 if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
541 fail_reason = "Bad host address";
546 if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
547 fail_reason = "Bad host port separator";
550 host_port = strtol(buf, &end, 0);
551 if (*end != '\0' || host_port < 0 || host_port > 65535) {
552 fail_reason = "Bad host port";
556 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
557 fail_reason = "Missing guest address";
560 if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
561 fail_reason = "Bad guest address";
565 guest_port = strtol(p, &end, 0);
566 if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
567 fail_reason = "Bad guest port";
571 if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
573 error_setg(errp, "Could not set up host forwarding rule '%s'",
580 error_setg(errp, "Invalid host forwarding rule '%s' (%s)", redir_str,
585 void hmp_hostfwd_add(Monitor *mon, const QDict *qdict)
587 const char *redir_str;
589 const char *arg1 = qdict_get_str(qdict, "arg1");
590 const char *arg2 = qdict_get_try_str(qdict, "arg2");
591 const char *arg3 = qdict_get_try_str(qdict, "arg3");
594 s = slirp_lookup(mon, arg1, arg2);
597 s = slirp_lookup(mon, NULL, arg1);
600 s = slirp_lookup(mon, NULL, NULL);
605 if (slirp_hostfwd(s, redir_str, 0, &err) < 0) {
606 error_report_err(err);
612 int net_slirp_redir(const char *redir_str)
614 struct slirp_config_str *config;
618 if (QTAILQ_EMPTY(&slirp_stacks)) {
619 config = g_malloc(sizeof(*config));
620 pstrcpy(config->str, sizeof(config->str), redir_str);
621 config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
622 config->next = slirp_configs;
623 slirp_configs = config;
627 res = slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1, &err);
629 error_report_err(err);
636 /* automatic user mode samba server configuration */
637 static void slirp_smb_cleanup(SlirpState *s)
642 gchar *cmd = g_strdup_printf("rm -rf %s", s->smb_dir);
644 if (ret == -1 || !WIFEXITED(ret)) {
645 error_report("'%s' failed.", cmd);
646 } else if (WEXITSTATUS(ret)) {
647 error_report("'%s' failed. Error code: %d",
648 cmd, WEXITSTATUS(ret));
656 static int slirp_smb(SlirpState* s, const char *exported_dir,
657 struct in_addr vserver_addr, Error **errp)
661 struct passwd *passwd;
664 passwd = getpwuid(geteuid());
666 error_setg(errp, "Failed to retrieve user name");
670 if (access(CONFIG_SMBD_COMMAND, F_OK)) {
671 error_setg(errp, "Could not find '%s', please install it",
672 CONFIG_SMBD_COMMAND);
676 if (access(exported_dir, R_OK | X_OK)) {
677 error_setg(errp, "Error accessing shared directory '%s': %s",
678 exported_dir, strerror(errno));
682 s->smb_dir = g_dir_make_tmp("qemu-smb.XXXXXX", NULL);
684 error_setg(errp, "Could not create samba server dir");
687 smb_conf = g_strdup_printf("%s/%s", s->smb_dir, "smb.conf");
689 f = fopen(smb_conf, "w");
691 slirp_smb_cleanup(s);
693 "Could not create samba server configuration file '%s'",
701 "interfaces=127.0.0.1\n"
702 "bind interfaces only=yes\n"
704 "lock directory=%s\n"
705 "state directory=%s\n"
706 "cache directory=%s\n"
707 "ncalrpc dir=%s/ncalrpc\n"
708 "log file=%s/log.smbd\n"
709 "smb passwd file=%s/smbpasswd\n"
711 "map to guest = Bad User\n"
712 "load printers = no\n"
714 "disable spoolss = yes\n"
715 "usershare max shares = 0\n"
734 smb_cmdline = g_strdup_printf("%s -l %s -s %s",
735 CONFIG_SMBD_COMMAND, s->smb_dir, smb_conf);
738 if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0 ||
739 slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 445) < 0) {
740 slirp_smb_cleanup(s);
742 error_setg(errp, "Conflicting/invalid smbserver address");
749 /* automatic user mode samba server configuration (legacy interface) */
750 int net_slirp_smb(const char *exported_dir)
752 struct in_addr vserver_addr = { .s_addr = 0 };
754 if (legacy_smb_export) {
755 fprintf(stderr, "-smb given twice\n");
758 legacy_smb_export = exported_dir;
759 if (!QTAILQ_EMPTY(&slirp_stacks)) {
761 int res = slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
764 error_report_err(err);
771 #endif /* !defined(_WIN32) */
775 struct in_addr server;
780 static int guestfwd_can_read(void *opaque)
782 struct GuestFwd *fwd = opaque;
783 return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
786 static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
788 struct GuestFwd *fwd = opaque;
789 slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
792 static int slirp_guestfwd(SlirpState *s, const char *config_str,
793 int legacy_format, Error **errp)
795 struct in_addr server = { .s_addr = 0 };
796 struct GuestFwd *fwd;
804 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
808 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
811 if (strcmp(buf, "tcp") && buf[0] != '\0') {
814 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
817 if (buf[0] != '\0' && !inet_aton(buf, &server)) {
820 if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
824 port = strtol(buf, &end, 10);
825 if (*end != '\0' || port < 1 || port > 65535) {
829 snprintf(buf, sizeof(buf), "guestfwd.tcp.%d", port);
831 if ((strlen(p) > 4) && !strncmp(p, "cmd:", 4)) {
832 if (slirp_add_exec(s->slirp, 0, &p[4], &server, port) < 0) {
833 error_setg(errp, "Conflicting/invalid host:port in guest "
834 "forwarding rule '%s'", config_str);
839 Chardev *chr = qemu_chr_new(buf, p);
842 error_setg(errp, "Could not open guest forwarding device '%s'",
847 fwd = g_new(struct GuestFwd, 1);
848 qemu_chr_fe_init(&fwd->hd, chr, &err);
850 error_propagate(errp, err);
855 if (slirp_add_exec(s->slirp, 3, &fwd->hd, &server, port) < 0) {
856 error_setg(errp, "Conflicting/invalid host:port in guest "
857 "forwarding rule '%s'", config_str);
861 fwd->server = server;
863 fwd->slirp = s->slirp;
865 qemu_chr_fe_set_handlers(&fwd->hd, guestfwd_can_read, guestfwd_read,
866 NULL, NULL, fwd, NULL, true);
871 error_setg(errp, "Invalid guest forwarding rule '%s'", config_str);
875 void hmp_info_usernet(Monitor *mon, const QDict *qdict)
879 QTAILQ_FOREACH(s, &slirp_stacks, entry) {
881 bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0;
882 monitor_printf(mon, "Hub %d (%s):\n",
883 got_hub_id ? id : -1,
885 slirp_connection_info(s->slirp, mon);
890 net_init_slirp_configs(const StringList *fwd, int flags)
893 struct slirp_config_str *config;
895 config = g_malloc0(sizeof(*config));
896 pstrcpy(config->str, sizeof(config->str), fwd->value->str);
897 config->flags = flags;
898 config->next = slirp_configs;
899 slirp_configs = config;
905 static const char **slirp_dnssearch(const StringList *dnsname)
907 const StringList *c = dnsname;
908 size_t i = 0, num_opts = 0;
920 ret = g_malloc((num_opts + 1) * sizeof(*ret));
923 ret[i++] = c->value->str;
930 int net_init_slirp(const Netdev *netdev, const char *name,
931 NetClientState *peer, Error **errp)
933 struct slirp_config_str *config;
936 const NetdevUserOptions *user;
937 const char **dnssearch;
938 bool ipv4 = true, ipv6 = true;
940 assert(netdev->type == NET_CLIENT_DRIVER_USER);
941 user = &netdev->u.user;
943 if ((user->has_ipv6 && user->ipv6 && !user->has_ipv4) ||
944 (user->has_ipv4 && !user->ipv4)) {
947 if ((user->has_ipv4 && user->ipv4 && !user->has_ipv6) ||
948 (user->has_ipv6 && !user->ipv6)) {
952 vnet = user->has_net ? g_strdup(user->net) :
953 user->has_ip ? g_strdup_printf("%s/24", user->ip) :
956 dnssearch = slirp_dnssearch(user->dnssearch);
958 /* all optional fields are initialized to "all bits zero" */
960 net_init_slirp_configs(user->hostfwd, SLIRP_CFG_HOSTFWD);
961 net_init_slirp_configs(user->guestfwd, 0);
963 ret = net_slirp_init(peer, "user", name, user->q_restrict,
964 ipv4, vnet, user->host,
965 ipv6, user->ipv6_prefix, user->ipv6_prefixlen,
966 user->ipv6_host, user->hostname, user->tftp,
967 user->bootfile, user->dhcpstart,
968 user->dns, user->ipv6_dns, user->smb,
969 user->smbserver, dnssearch, user->domainname, errp);
971 while (slirp_configs) {
972 config = slirp_configs;
973 slirp_configs = config->next;