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
24 #include "qemu-common.h"
28 #include "qemu-timer.h"
29 #include "qemu-char.h"
30 #include "audio/audio.h"
41 #include <sys/times.h>
45 #include <sys/ioctl.h>
46 #include <sys/resource.h>
47 #include <sys/socket.h>
48 #include <netinet/in.h>
51 #include <net/if_tap.h>
54 #include <linux/if_tun.h>
56 #include <arpa/inet.h>
59 #include <sys/select.h>
67 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
68 #include <freebsd/stdlib.h>
73 #include <linux/rtc.h>
75 /* For the benefit of older linux systems which don't supply it,
76 we use a local copy of hpet.h. */
77 /* #include <linux/hpet.h> */
80 #include <linux/ppdev.h>
81 #include <linux/parport.h>
85 #include <sys/ethernet.h>
86 #include <sys/sockio.h>
87 #include <netinet/arp.h>
88 #include <netinet/in.h>
89 #include <netinet/in_systm.h>
90 #include <netinet/ip.h>
91 #include <netinet/ip_icmp.h> // must come after ip.h
92 #include <netinet/udp.h>
93 #include <netinet/tcp.h>
101 #include "qemu_socket.h"
103 #if defined(CONFIG_SLIRP)
104 #include "libslirp.h"
107 #if defined(__OpenBSD__)
111 #if defined(CONFIG_VDE)
112 #include <libvdeplug.h>
117 #include <sys/timeb.h>
118 #include <mmsystem.h>
119 #define getopt_long_only getopt_long
120 #define memalign(align, size) malloc(size)
123 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
124 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
126 #define SMBD_COMMAND "/usr/sfw/sbin/smbd"
128 #define SMBD_COMMAND "/usr/sbin/smbd"
131 static VLANState *first_vlan;
133 /***********************************************************/
134 /* network device redirectors */
136 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
137 static void hex_dump(FILE *f, const uint8_t *buf, int size)
141 for(i=0;i<size;i+=16) {
145 fprintf(f, "%08x ", i);
148 fprintf(f, " %02x", buf[i+j]);
155 if (c < ' ' || c > '~')
164 static int parse_macaddr(uint8_t *macaddr, const char *p)
171 offset = strtol(p, &last_char, 0);
172 if (0 == errno && '\0' == *last_char &&
173 offset >= 0 && offset <= 0xFFFFFF) {
174 macaddr[3] = (offset & 0xFF0000) >> 16;
175 macaddr[4] = (offset & 0xFF00) >> 8;
176 macaddr[5] = offset & 0xFF;
179 for(i = 0; i < 6; i++) {
180 macaddr[i] = strtol(p, (char **)&p, 16);
185 if (*p != ':' && *p != '-')
196 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
207 if (len > buf_size - 1)
216 int parse_host_src_port(struct sockaddr_in *haddr,
217 struct sockaddr_in *saddr,
218 const char *input_str)
220 char *str = strdup(input_str);
221 char *host_str = str;
223 const char *src_str2;
227 * Chop off any extra arguments at the end of the string which
228 * would start with a comma, then fill in the src port information
229 * if it was provided else use the "any address" and "any port".
231 if ((ptr = strchr(str,',')))
234 if ((src_str = strchr(input_str,'@'))) {
239 if (parse_host_port(haddr, host_str) < 0)
243 if (!src_str || *src_str == '\0')
246 if (parse_host_port(saddr, src_str2) < 0)
257 int parse_host_port(struct sockaddr_in *saddr, const char *str)
265 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
267 saddr->sin_family = AF_INET;
268 if (buf[0] == '\0') {
269 saddr->sin_addr.s_addr = 0;
271 if (qemu_isdigit(buf[0])) {
272 if (!inet_aton(buf, &saddr->sin_addr))
275 if ((he = gethostbyname(buf)) == NULL)
277 saddr->sin_addr = *(struct in_addr *)he->h_addr;
280 port = strtol(p, (char **)&r, 0);
283 saddr->sin_port = htons(port);
288 int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
293 len = MIN(108, strlen(str));
294 p = strchr(str, ',');
296 len = MIN(len, p - str);
298 memset(uaddr, 0, sizeof(*uaddr));
300 uaddr->sun_family = AF_UNIX;
301 memcpy(uaddr->sun_path, str, len);
307 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
308 IOReadHandler *fd_read,
309 IOCanRWHandler *fd_can_read,
312 VLANClientState *vc, **pvc;
313 vc = qemu_mallocz(sizeof(VLANClientState));
316 vc->fd_read = fd_read;
317 vc->fd_can_read = fd_can_read;
322 pvc = &vlan->first_client;
329 void qemu_del_vlan_client(VLANClientState *vc)
331 VLANClientState **pvc = &vc->vlan->first_client;
342 int qemu_can_send_packet(VLANClientState *vc1)
344 VLANState *vlan = vc1->vlan;
347 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
349 if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
356 void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
358 VLANState *vlan = vc1->vlan;
362 printf("vlan %d send:\n", vlan->id);
363 hex_dump(stdout, buf, size);
365 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
367 vc->fd_read(vc->opaque, buf, size);
372 #if defined(CONFIG_SLIRP)
374 /* slirp network adapter */
376 static int slirp_inited;
377 static VLANClientState *slirp_vc;
379 int slirp_can_output(void)
381 return !slirp_vc || qemu_can_send_packet(slirp_vc);
384 void slirp_output(const uint8_t *pkt, int pkt_len)
387 printf("slirp output:\n");
388 hex_dump(stdout, pkt, pkt_len);
392 qemu_send_packet(slirp_vc, pkt, pkt_len);
395 int slirp_is_inited(void)
400 static void slirp_receive(void *opaque, const uint8_t *buf, int size)
403 printf("slirp input:\n");
404 hex_dump(stdout, buf, size);
406 slirp_input(buf, size);
409 static int net_slirp_init(VLANState *vlan)
415 slirp_vc = qemu_new_vlan_client(vlan,
416 slirp_receive, NULL, NULL);
417 snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector");
421 void net_slirp_redir(const char *redir_str)
426 struct in_addr guest_addr;
427 int host_port, guest_port;
435 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
437 if (!strcmp(buf, "tcp")) {
439 } else if (!strcmp(buf, "udp")) {
445 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
447 host_port = strtol(buf, &r, 0);
451 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
453 if (buf[0] == '\0') {
454 pstrcpy(buf, sizeof(buf), "10.0.2.15");
456 if (!inet_aton(buf, &guest_addr))
459 guest_port = strtol(p, &r, 0);
463 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
464 fprintf(stderr, "qemu: could not set up redirection\n");
469 fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
475 static char smb_dir[1024];
477 static void erase_dir(char *dir_name)
483 /* erase all the files in the directory */
484 if ((d = opendir(dir_name)) != 0) {
489 if (strcmp(de->d_name, ".") != 0 &&
490 strcmp(de->d_name, "..") != 0) {
491 snprintf(filename, sizeof(filename), "%s/%s",
492 smb_dir, de->d_name);
493 if (unlink(filename) != 0) /* is it a directory? */
502 /* automatic user mode samba server configuration */
503 static void smb_exit(void)
508 /* automatic user mode samba server configuration */
509 void net_slirp_smb(const char *exported_dir)
512 char smb_cmdline[1024];
520 /* XXX: better tmp dir construction */
521 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
522 if (mkdir(smb_dir, 0700) < 0) {
523 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
526 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
528 f = fopen(smb_conf, "w");
530 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
537 "socket address=127.0.0.1\n"
539 "lock directory=%s\n"
540 "log file=%s/log.smbd\n"
541 "smb passwd file=%s/smbpasswd\n"
557 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
558 SMBD_COMMAND, smb_conf);
560 slirp_add_exec(0, smb_cmdline, 4, 139);
563 #endif /* !defined(_WIN32) */
564 void do_info_slirp(void)
569 #endif /* CONFIG_SLIRP */
573 typedef struct TAPState {
576 char down_script[1024];
579 static void tap_receive(void *opaque, const uint8_t *buf, int size)
581 TAPState *s = opaque;
584 ret = write(s->fd, buf, size);
585 if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
592 static void tap_send(void *opaque)
594 TAPState *s = opaque;
601 sbuf.maxlen = sizeof(buf);
603 size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
605 size = read(s->fd, buf, sizeof(buf));
608 qemu_send_packet(s->vc, buf, size);
614 static TAPState *net_tap_fd_init(VLANState *vlan, int fd)
618 s = qemu_mallocz(sizeof(TAPState));
622 s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
623 qemu_set_fd_handler(s->fd, tap_send, NULL, s);
624 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd);
628 #if defined (_BSD) || defined (__FreeBSD_kernel__)
629 static int tap_open(char *ifname, int ifname_size)
635 TFR(fd = open("/dev/tap", O_RDWR));
637 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
642 dev = devname(s.st_rdev, S_IFCHR);
643 pstrcpy(ifname, ifname_size, dev);
645 fcntl(fd, F_SETFL, O_NONBLOCK);
648 #elif defined(__sun__)
649 #define TUNNEWPPA (('T'<<16) | 0x0001)
651 * Allocate TAP device, returns opened fd.
652 * Stores dev name in the first arg(must be large enough).
654 int tap_alloc(char *dev, size_t dev_size)
656 int tap_fd, if_fd, ppa = -1;
657 static int ip_fd = 0;
660 static int arp_fd = 0;
661 int ip_muxid, arp_muxid;
662 struct strioctl strioc_if, strioc_ppa;
663 int link_type = I_PLINK;;
665 char actual_name[32] = "";
667 memset(&ifr, 0x0, sizeof(ifr));
671 while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
675 /* Check if IP device was opened */
679 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
681 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
685 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
687 syslog(LOG_ERR, "Can't open /dev/tap");
691 /* Assign a new PPA and get its unit number. */
692 strioc_ppa.ic_cmd = TUNNEWPPA;
693 strioc_ppa.ic_timout = 0;
694 strioc_ppa.ic_len = sizeof(ppa);
695 strioc_ppa.ic_dp = (char *)&ppa;
696 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
697 syslog (LOG_ERR, "Can't assign new interface");
699 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
701 syslog(LOG_ERR, "Can't open /dev/tap (2)");
704 if(ioctl(if_fd, I_PUSH, "ip") < 0){
705 syslog(LOG_ERR, "Can't push IP module");
709 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
710 syslog(LOG_ERR, "Can't get flags\n");
712 snprintf (actual_name, 32, "tap%d", ppa);
713 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
716 /* Assign ppa according to the unit number returned by tun device */
718 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
719 syslog (LOG_ERR, "Can't set PPA %d", ppa);
720 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
721 syslog (LOG_ERR, "Can't get flags\n");
722 /* Push arp module to if_fd */
723 if (ioctl (if_fd, I_PUSH, "arp") < 0)
724 syslog (LOG_ERR, "Can't push ARP module (2)");
726 /* Push arp module to ip_fd */
727 if (ioctl (ip_fd, I_POP, NULL) < 0)
728 syslog (LOG_ERR, "I_POP failed\n");
729 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
730 syslog (LOG_ERR, "Can't push ARP module (3)\n");
732 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
734 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
736 /* Set ifname to arp */
737 strioc_if.ic_cmd = SIOCSLIFNAME;
738 strioc_if.ic_timout = 0;
739 strioc_if.ic_len = sizeof(ifr);
740 strioc_if.ic_dp = (char *)𝔦
741 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
742 syslog (LOG_ERR, "Can't set ifname to arp\n");
745 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
746 syslog(LOG_ERR, "Can't link TAP device to IP");
750 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
751 syslog (LOG_ERR, "Can't link TAP device to ARP");
755 memset(&ifr, 0x0, sizeof(ifr));
756 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
757 ifr.lifr_ip_muxid = ip_muxid;
758 ifr.lifr_arp_muxid = arp_muxid;
760 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
762 ioctl (ip_fd, I_PUNLINK , arp_muxid);
763 ioctl (ip_fd, I_PUNLINK, ip_muxid);
764 syslog (LOG_ERR, "Can't set multiplexor id");
767 snprintf(dev, dev_size, "tap%d", ppa);
771 static int tap_open(char *ifname, int ifname_size)
775 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
776 fprintf(stderr, "Cannot allocate TAP device\n");
779 pstrcpy(ifname, ifname_size, dev);
780 fcntl(fd, F_SETFL, O_NONBLOCK);
784 static int tap_open(char *ifname, int ifname_size)
786 fprintf (stderr, "no tap on AIX\n");
790 static int tap_open(char *ifname, int ifname_size)
795 TFR(fd = open("/dev/net/tun", O_RDWR));
797 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
800 memset(&ifr, 0, sizeof(ifr));
801 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
802 if (ifname[0] != '\0')
803 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
805 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
806 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
808 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
812 pstrcpy(ifname, ifname_size, ifr.ifr_name);
813 fcntl(fd, F_SETFL, O_NONBLOCK);
818 static int launch_script(const char *setup_script, const char *ifname, int fd)
824 /* try to launch network script */
828 int open_max = sysconf (_SC_OPEN_MAX), i;
829 for (i = 0; i < open_max; i++)
830 if (i != STDIN_FILENO &&
831 i != STDOUT_FILENO &&
832 i != STDERR_FILENO &&
837 *parg++ = (char *)setup_script;
838 *parg++ = (char *)ifname;
840 execv(setup_script, args);
843 while (waitpid(pid, &status, 0) != pid);
844 if (!WIFEXITED(status) ||
845 WEXITSTATUS(status) != 0) {
846 fprintf(stderr, "%s: could not launch network script\n",
854 static int net_tap_init(VLANState *vlan, const char *ifname1,
855 const char *setup_script, const char *down_script)
862 pstrcpy(ifname, sizeof(ifname), ifname1);
865 TFR(fd = tap_open(ifname, sizeof(ifname)));
869 if (!setup_script || !strcmp(setup_script, "no"))
871 if (setup_script[0] != '\0') {
872 if (launch_script(setup_script, ifname, fd))
875 s = net_tap_fd_init(vlan, fd);
878 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
879 "tap: ifname=%s setup_script=%s", ifname, setup_script);
880 if (down_script && strcmp(down_script, "no"))
881 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
887 #if defined(CONFIG_VDE)
888 typedef struct VDEState {
893 static void vde_to_qemu(void *opaque)
895 VDEState *s = opaque;
899 size = vde_recv(s->vde, buf, sizeof(buf), 0);
901 qemu_send_packet(s->vc, buf, size);
905 static void vde_from_qemu(void *opaque, const uint8_t *buf, int size)
907 VDEState *s = opaque;
910 ret = vde_send(s->vde, buf, size, 0);
911 if (ret < 0 && errno == EINTR) {
918 static int net_vde_init(VLANState *vlan, const char *sock, int port,
919 const char *group, int mode)
922 char *init_group = strlen(group) ? (char *)group : NULL;
923 char *init_sock = strlen(sock) ? (char *)sock : NULL;
925 struct vde_open_args args = {
931 s = qemu_mallocz(sizeof(VDEState));
934 s->vde = vde_open(init_sock, "QEMU", &args);
939 s->vc = qemu_new_vlan_client(vlan, vde_from_qemu, NULL, s);
940 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
941 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "vde: sock=%s fd=%d",
942 sock, vde_datafd(s->vde));
947 /* network connection */
948 typedef struct NetSocketState {
951 int state; /* 0 = getting length, 1 = getting data */
955 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
958 typedef struct NetSocketListenState {
961 } NetSocketListenState;
963 /* XXX: we consider we can send the whole packet without blocking */
964 static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
966 NetSocketState *s = opaque;
970 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
971 send_all(s->fd, buf, size);
974 static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
976 NetSocketState *s = opaque;
977 sendto(s->fd, buf, size, 0,
978 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
981 static void net_socket_send(void *opaque)
983 NetSocketState *s = opaque;
988 size = recv(s->fd, buf1, sizeof(buf1), 0);
990 err = socket_error();
991 if (err != EWOULDBLOCK)
993 } else if (size == 0) {
994 /* end of connection */
996 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1002 /* reassemble a packet from the network */
1008 memcpy(s->buf + s->index, buf, l);
1012 if (s->index == 4) {
1014 s->packet_len = ntohl(*(uint32_t *)s->buf);
1020 l = s->packet_len - s->index;
1023 memcpy(s->buf + s->index, buf, l);
1027 if (s->index >= s->packet_len) {
1028 qemu_send_packet(s->vc, s->buf, s->packet_len);
1037 static void net_socket_send_dgram(void *opaque)
1039 NetSocketState *s = opaque;
1042 size = recv(s->fd, s->buf, sizeof(s->buf), 0);
1046 /* end of connection */
1047 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1050 qemu_send_packet(s->vc, s->buf, size);
1053 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1058 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1059 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1060 inet_ntoa(mcastaddr->sin_addr),
1061 (int)ntohl(mcastaddr->sin_addr.s_addr));
1065 fd = socket(PF_INET, SOCK_DGRAM, 0);
1067 perror("socket(PF_INET, SOCK_DGRAM)");
1072 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1073 (const char *)&val, sizeof(val));
1075 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1079 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1085 /* Add host to multicast group */
1086 imr.imr_multiaddr = mcastaddr->sin_addr;
1087 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1089 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1090 (const char *)&imr, sizeof(struct ip_mreq));
1092 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1096 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1098 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1099 (const char *)&val, sizeof(val));
1101 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1105 socket_set_nonblock(fd);
1113 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, int fd,
1116 struct sockaddr_in saddr;
1118 socklen_t saddr_len;
1121 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1122 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1123 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1127 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1129 if (saddr.sin_addr.s_addr==0) {
1130 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1134 /* clone dgram socket */
1135 newfd = net_socket_mcast_create(&saddr);
1137 /* error already reported by net_socket_mcast_create() */
1141 /* clone newfd to fd, close newfd */
1146 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1147 fd, strerror(errno));
1152 s = qemu_mallocz(sizeof(NetSocketState));
1157 s->vc = qemu_new_vlan_client(vlan, net_socket_receive_dgram, NULL, s);
1158 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1160 /* mcast: save bound address as dst */
1161 if (is_connected) s->dgram_dst=saddr;
1163 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1164 "socket: fd=%d (%s mcast=%s:%d)",
1165 fd, is_connected? "cloned" : "",
1166 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1170 static void net_socket_connect(void *opaque)
1172 NetSocketState *s = opaque;
1173 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1176 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, int fd,
1180 s = qemu_mallocz(sizeof(NetSocketState));
1184 s->vc = qemu_new_vlan_client(vlan,
1185 net_socket_receive, NULL, s);
1186 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1187 "socket: fd=%d", fd);
1189 net_socket_connect(s);
1191 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1196 static NetSocketState *net_socket_fd_init(VLANState *vlan, int fd,
1199 int so_type=-1, optlen=sizeof(so_type);
1201 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1202 (socklen_t *)&optlen)< 0) {
1203 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1208 return net_socket_fd_init_dgram(vlan, fd, is_connected);
1210 return net_socket_fd_init_stream(vlan, fd, is_connected);
1212 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1213 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1214 return net_socket_fd_init_stream(vlan, fd, is_connected);
1219 static void net_socket_accept(void *opaque)
1221 NetSocketListenState *s = opaque;
1223 struct sockaddr_in saddr;
1228 len = sizeof(saddr);
1229 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1230 if (fd < 0 && errno != EINTR) {
1232 } else if (fd >= 0) {
1236 s1 = net_socket_fd_init(s->vlan, fd, 1);
1240 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1241 "socket: connection from %s:%d",
1242 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1246 static int net_socket_listen_init(VLANState *vlan, const char *host_str)
1248 NetSocketListenState *s;
1250 struct sockaddr_in saddr;
1252 if (parse_host_port(&saddr, host_str) < 0)
1255 s = qemu_mallocz(sizeof(NetSocketListenState));
1259 fd = socket(PF_INET, SOCK_STREAM, 0);
1264 socket_set_nonblock(fd);
1266 /* allow fast reuse */
1268 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1270 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1275 ret = listen(fd, 0);
1282 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1286 static int net_socket_connect_init(VLANState *vlan, const char *host_str)
1289 int fd, connected, ret, err;
1290 struct sockaddr_in saddr;
1292 if (parse_host_port(&saddr, host_str) < 0)
1295 fd = socket(PF_INET, SOCK_STREAM, 0);
1300 socket_set_nonblock(fd);
1304 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1306 err = socket_error();
1307 if (err == EINTR || err == EWOULDBLOCK) {
1308 } else if (err == EINPROGRESS) {
1311 } else if (err == WSAEALREADY) {
1324 s = net_socket_fd_init(vlan, fd, connected);
1327 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1328 "socket: connect to %s:%d",
1329 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1333 static int net_socket_mcast_init(VLANState *vlan, const char *host_str)
1337 struct sockaddr_in saddr;
1339 if (parse_host_port(&saddr, host_str) < 0)
1343 fd = net_socket_mcast_create(&saddr);
1347 s = net_socket_fd_init(vlan, fd, 0);
1351 s->dgram_dst = saddr;
1353 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1354 "socket: mcast=%s:%d",
1355 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1360 /* find or alloc a new VLAN */
1361 VLANState *qemu_find_vlan(int id)
1363 VLANState **pvlan, *vlan;
1364 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1368 vlan = qemu_mallocz(sizeof(VLANState));
1373 pvlan = &first_vlan;
1374 while (*pvlan != NULL)
1375 pvlan = &(*pvlan)->next;
1380 int net_client_init(const char *device, const char *p)
1387 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
1388 vlan_id = strtol(buf, NULL, 0);
1390 vlan = qemu_find_vlan(vlan_id);
1392 fprintf(stderr, "Could not create vlan %d\n", vlan_id);
1395 if (!strcmp(device, "nic")) {
1399 if (nb_nics >= MAX_NICS) {
1400 fprintf(stderr, "Too Many NICs\n");
1403 nd = &nd_table[nb_nics];
1404 macaddr = nd->macaddr;
1410 macaddr[5] = 0x56 + nb_nics;
1412 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
1413 if (parse_macaddr(macaddr, buf) < 0) {
1414 fprintf(stderr, "invalid syntax for ethernet address\n");
1418 if (get_param_value(buf, sizeof(buf), "model", p)) {
1419 nd->model = strdup(buf);
1423 vlan->nb_guest_devs++;
1426 if (!strcmp(device, "none")) {
1427 /* does nothing. It is needed to signal that no network cards
1432 if (!strcmp(device, "user")) {
1433 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
1434 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
1436 vlan->nb_host_devs++;
1437 ret = net_slirp_init(vlan);
1441 if (!strcmp(device, "tap")) {
1443 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1444 fprintf(stderr, "tap: no interface name\n");
1447 vlan->nb_host_devs++;
1448 ret = tap_win32_init(vlan, ifname);
1450 #elif defined (_AIX)
1452 if (!strcmp(device, "tap")) {
1454 char setup_script[1024], down_script[1024];
1456 vlan->nb_host_devs++;
1457 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1458 fd = strtol(buf, NULL, 0);
1459 fcntl(fd, F_SETFL, O_NONBLOCK);
1461 if (net_tap_fd_init(vlan, fd))
1464 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1467 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
1468 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
1470 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
1471 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
1473 ret = net_tap_init(vlan, ifname, setup_script, down_script);
1477 if (!strcmp(device, "socket")) {
1478 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1480 fd = strtol(buf, NULL, 0);
1482 if (net_socket_fd_init(vlan, fd, 1))
1484 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
1485 ret = net_socket_listen_init(vlan, buf);
1486 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
1487 ret = net_socket_connect_init(vlan, buf);
1488 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
1489 ret = net_socket_mcast_init(vlan, buf);
1491 fprintf(stderr, "Unknown socket options: %s\n", p);
1494 vlan->nb_host_devs++;
1497 if (!strcmp(device, "vde")) {
1498 char vde_sock[1024], vde_group[512];
1499 int vde_port, vde_mode;
1500 vlan->nb_host_devs++;
1501 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
1504 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
1505 vde_port = strtol(buf, NULL, 10);
1509 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
1510 vde_group[0] = '\0';
1512 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
1513 vde_mode = strtol(buf, NULL, 8);
1517 ret = net_vde_init(vlan, vde_sock, vde_port, vde_group, vde_mode);
1521 fprintf(stderr, "Unknown network device: %s\n", device);
1525 fprintf(stderr, "Could not initialize device '%s'\n", device);
1531 int net_client_parse(const char *str)
1539 while (*p != '\0' && *p != ',') {
1540 if ((q - device) < sizeof(device) - 1)
1548 return net_client_init(device, p);
1551 void do_info_network(void)
1554 VLANClientState *vc;
1556 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1557 term_printf("VLAN %d devices:\n", vlan->id);
1558 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
1559 term_printf(" %s\n", vc->info_str);
1563 void net_cleanup(void)
1567 #if !defined(_WIN32)
1568 /* close network clients */
1569 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1570 VLANClientState *vc;
1572 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
1573 if (vc->fd_read == tap_receive) {
1575 TAPState *s = vc->opaque;
1577 if (sscanf(vc->info_str, "tap: ifname=%63s ", ifname) == 1 &&
1579 launch_script(s->down_script, ifname, s->fd);
1581 #if defined(CONFIG_VDE)
1582 if (vc->fd_read == vde_from_qemu) {
1583 VDEState *s = vc->opaque;
1592 void net_client_check(void)
1596 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1597 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
1599 if (vlan->nb_guest_devs == 0)
1600 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1601 if (vlan->nb_host_devs == 0)
1603 "Warning: vlan %d is not connected to host network\n",