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 "hw/boards.h"
27 #include "hw/pcmcia.h"
29 #include "hw/audiodev.h"
37 #include "qemu-timer.h"
38 #include "qemu-char.h"
40 #include "audio/audio.h"
41 #include "migration.h"
52 #include <sys/times.h>
56 #include <sys/ioctl.h>
57 #include <sys/resource.h>
58 #include <sys/socket.h>
59 #include <netinet/in.h>
62 #include <net/if_tap.h>
65 #include <linux/if_tun.h>
67 #include <arpa/inet.h>
70 #include <sys/select.h>
78 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
79 #include <freebsd/stdlib.h>
84 #include <linux/rtc.h>
86 /* For the benefit of older linux systems which don't supply it,
87 we use a local copy of hpet.h. */
88 /* #include <linux/hpet.h> */
91 #include <linux/ppdev.h>
92 #include <linux/parport.h>
96 #include <sys/ethernet.h>
97 #include <sys/sockio.h>
98 #include <netinet/arp.h>
99 #include <netinet/in.h>
100 #include <netinet/in_systm.h>
101 #include <netinet/ip.h>
102 #include <netinet/ip_icmp.h> // must come after ip.h
103 #include <netinet/udp.h>
104 #include <netinet/tcp.h>
112 #include "qemu_socket.h"
114 #if defined(CONFIG_SLIRP)
115 #include "libslirp.h"
118 #if defined(__OpenBSD__)
122 #if defined(CONFIG_VDE)
123 #include <libvdeplug.h>
128 #include <sys/timeb.h>
129 #include <mmsystem.h>
130 #define getopt_long_only getopt_long
131 #define memalign(align, size) malloc(size)
134 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
135 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
137 #define SMBD_COMMAND "/usr/sfw/sbin/smbd"
139 #define SMBD_COMMAND "/usr/sbin/smbd"
142 static VLANState *first_vlan;
144 /***********************************************************/
145 /* network device redirectors */
147 #if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
148 static void hex_dump(FILE *f, const uint8_t *buf, int size)
152 for(i=0;i<size;i+=16) {
156 fprintf(f, "%08x ", i);
159 fprintf(f, " %02x", buf[i+j]);
166 if (c < ' ' || c > '~')
175 static int parse_macaddr(uint8_t *macaddr, const char *p)
182 offset = strtol(p, &last_char, 0);
183 if (0 == errno && '\0' == *last_char &&
184 offset >= 0 && offset <= 0xFFFFFF) {
185 macaddr[3] = (offset & 0xFF0000) >> 16;
186 macaddr[4] = (offset & 0xFF00) >> 8;
187 macaddr[5] = offset & 0xFF;
190 for(i = 0; i < 6; i++) {
191 macaddr[i] = strtol(p, (char **)&p, 16);
196 if (*p != ':' && *p != '-')
207 static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
218 if (len > buf_size - 1)
227 int parse_host_src_port(struct sockaddr_in *haddr,
228 struct sockaddr_in *saddr,
229 const char *input_str)
231 char *str = strdup(input_str);
232 char *host_str = str;
234 const char *src_str2;
238 * Chop off any extra arguments at the end of the string which
239 * would start with a comma, then fill in the src port information
240 * if it was provided else use the "any address" and "any port".
242 if ((ptr = strchr(str,',')))
245 if ((src_str = strchr(input_str,'@'))) {
250 if (parse_host_port(haddr, host_str) < 0)
254 if (!src_str || *src_str == '\0')
257 if (parse_host_port(saddr, src_str2) < 0)
268 int parse_host_port(struct sockaddr_in *saddr, const char *str)
276 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
278 saddr->sin_family = AF_INET;
279 if (buf[0] == '\0') {
280 saddr->sin_addr.s_addr = 0;
282 if (isdigit(buf[0])) {
283 if (!inet_aton(buf, &saddr->sin_addr))
286 if ((he = gethostbyname(buf)) == NULL)
288 saddr->sin_addr = *(struct in_addr *)he->h_addr;
291 port = strtol(p, (char **)&r, 0);
294 saddr->sin_port = htons(port);
299 int parse_unix_path(struct sockaddr_un *uaddr, const char *str)
304 len = MIN(108, strlen(str));
305 p = strchr(str, ',');
307 len = MIN(len, p - str);
309 memset(uaddr, 0, sizeof(*uaddr));
311 uaddr->sun_family = AF_UNIX;
312 memcpy(uaddr->sun_path, str, len);
318 VLANClientState *qemu_new_vlan_client(VLANState *vlan,
319 IOReadHandler *fd_read,
320 IOCanRWHandler *fd_can_read,
323 VLANClientState *vc, **pvc;
324 vc = qemu_mallocz(sizeof(VLANClientState));
327 vc->fd_read = fd_read;
328 vc->fd_can_read = fd_can_read;
333 pvc = &vlan->first_client;
340 void qemu_del_vlan_client(VLANClientState *vc)
342 VLANClientState **pvc = &vc->vlan->first_client;
353 int qemu_can_send_packet(VLANClientState *vc1)
355 VLANState *vlan = vc1->vlan;
358 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
360 if (vc->fd_can_read && vc->fd_can_read(vc->opaque))
367 void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
369 VLANState *vlan = vc1->vlan;
373 printf("vlan %d send:\n", vlan->id);
374 hex_dump(stdout, buf, size);
376 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
378 vc->fd_read(vc->opaque, buf, size);
383 #if defined(CONFIG_SLIRP)
385 /* slirp network adapter */
387 static int slirp_inited;
388 static VLANClientState *slirp_vc;
390 int slirp_can_output(void)
392 return !slirp_vc || qemu_can_send_packet(slirp_vc);
395 void slirp_output(const uint8_t *pkt, int pkt_len)
398 printf("slirp output:\n");
399 hex_dump(stdout, pkt, pkt_len);
403 qemu_send_packet(slirp_vc, pkt, pkt_len);
406 int slirp_is_inited(void)
411 static void slirp_receive(void *opaque, const uint8_t *buf, int size)
414 printf("slirp input:\n");
415 hex_dump(stdout, buf, size);
417 slirp_input(buf, size);
420 static int net_slirp_init(VLANState *vlan)
426 slirp_vc = qemu_new_vlan_client(vlan,
427 slirp_receive, NULL, NULL);
428 snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector");
432 void net_slirp_redir(const char *redir_str)
437 struct in_addr guest_addr;
438 int host_port, guest_port;
446 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
448 if (!strcmp(buf, "tcp")) {
450 } else if (!strcmp(buf, "udp")) {
456 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
458 host_port = strtol(buf, &r, 0);
462 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
464 if (buf[0] == '\0') {
465 pstrcpy(buf, sizeof(buf), "10.0.2.15");
467 if (!inet_aton(buf, &guest_addr))
470 guest_port = strtol(p, &r, 0);
474 if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
475 fprintf(stderr, "qemu: could not set up redirection\n");
480 fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
486 static char smb_dir[1024];
488 static void erase_dir(char *dir_name)
494 /* erase all the files in the directory */
495 if ((d = opendir(dir_name)) != 0) {
500 if (strcmp(de->d_name, ".") != 0 &&
501 strcmp(de->d_name, "..") != 0) {
502 snprintf(filename, sizeof(filename), "%s/%s",
503 smb_dir, de->d_name);
504 if (unlink(filename) != 0) /* is it a directory? */
513 /* automatic user mode samba server configuration */
514 static void smb_exit(void)
519 /* automatic user mode samba server configuration */
520 void net_slirp_smb(const char *exported_dir)
523 char smb_cmdline[1024];
531 /* XXX: better tmp dir construction */
532 snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
533 if (mkdir(smb_dir, 0700) < 0) {
534 fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
537 snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
539 f = fopen(smb_conf, "w");
541 fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
548 "socket address=127.0.0.1\n"
550 "lock directory=%s\n"
551 "log file=%s/log.smbd\n"
552 "smb passwd file=%s/smbpasswd\n"
568 snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
569 SMBD_COMMAND, smb_conf);
571 slirp_add_exec(0, smb_cmdline, 4, 139);
574 #endif /* !defined(_WIN32) */
575 void do_info_slirp(void)
580 #endif /* CONFIG_SLIRP */
584 typedef struct TAPState {
587 char down_script[1024];
590 static void tap_receive(void *opaque, const uint8_t *buf, int size)
592 TAPState *s = opaque;
595 ret = write(s->fd, buf, size);
596 if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
603 static void tap_send(void *opaque)
605 TAPState *s = opaque;
612 sbuf.maxlen = sizeof(buf);
614 size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1;
616 size = read(s->fd, buf, sizeof(buf));
619 qemu_send_packet(s->vc, buf, size);
625 static TAPState *net_tap_fd_init(VLANState *vlan, int fd)
629 s = qemu_mallocz(sizeof(TAPState));
633 s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
634 qemu_set_fd_handler(s->fd, tap_send, NULL, s);
635 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd);
639 #if defined (_BSD) || defined (__FreeBSD_kernel__)
640 static int tap_open(char *ifname, int ifname_size)
646 TFR(fd = open("/dev/tap", O_RDWR));
648 fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
653 dev = devname(s.st_rdev, S_IFCHR);
654 pstrcpy(ifname, ifname_size, dev);
656 fcntl(fd, F_SETFL, O_NONBLOCK);
659 #elif defined(__sun__)
660 #define TUNNEWPPA (('T'<<16) | 0x0001)
662 * Allocate TAP device, returns opened fd.
663 * Stores dev name in the first arg(must be large enough).
665 int tap_alloc(char *dev, size_t dev_size)
667 int tap_fd, if_fd, ppa = -1;
668 static int ip_fd = 0;
671 static int arp_fd = 0;
672 int ip_muxid, arp_muxid;
673 struct strioctl strioc_if, strioc_ppa;
674 int link_type = I_PLINK;;
676 char actual_name[32] = "";
678 memset(&ifr, 0x0, sizeof(ifr));
682 while( *ptr && !isdigit((int)*ptr) ) ptr++;
686 /* Check if IP device was opened */
690 TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
692 syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
696 TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
698 syslog(LOG_ERR, "Can't open /dev/tap");
702 /* Assign a new PPA and get its unit number. */
703 strioc_ppa.ic_cmd = TUNNEWPPA;
704 strioc_ppa.ic_timout = 0;
705 strioc_ppa.ic_len = sizeof(ppa);
706 strioc_ppa.ic_dp = (char *)&ppa;
707 if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
708 syslog (LOG_ERR, "Can't assign new interface");
710 TFR(if_fd = open("/dev/tap", O_RDWR, 0));
712 syslog(LOG_ERR, "Can't open /dev/tap (2)");
715 if(ioctl(if_fd, I_PUSH, "ip") < 0){
716 syslog(LOG_ERR, "Can't push IP module");
720 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
721 syslog(LOG_ERR, "Can't get flags\n");
723 snprintf (actual_name, 32, "tap%d", ppa);
724 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
727 /* Assign ppa according to the unit number returned by tun device */
729 if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
730 syslog (LOG_ERR, "Can't set PPA %d", ppa);
731 if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
732 syslog (LOG_ERR, "Can't get flags\n");
733 /* Push arp module to if_fd */
734 if (ioctl (if_fd, I_PUSH, "arp") < 0)
735 syslog (LOG_ERR, "Can't push ARP module (2)");
737 /* Push arp module to ip_fd */
738 if (ioctl (ip_fd, I_POP, NULL) < 0)
739 syslog (LOG_ERR, "I_POP failed\n");
740 if (ioctl (ip_fd, I_PUSH, "arp") < 0)
741 syslog (LOG_ERR, "Can't push ARP module (3)\n");
743 TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
745 syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
747 /* Set ifname to arp */
748 strioc_if.ic_cmd = SIOCSLIFNAME;
749 strioc_if.ic_timout = 0;
750 strioc_if.ic_len = sizeof(ifr);
751 strioc_if.ic_dp = (char *)𝔦
752 if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
753 syslog (LOG_ERR, "Can't set ifname to arp\n");
756 if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
757 syslog(LOG_ERR, "Can't link TAP device to IP");
761 if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
762 syslog (LOG_ERR, "Can't link TAP device to ARP");
766 memset(&ifr, 0x0, sizeof(ifr));
767 pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
768 ifr.lifr_ip_muxid = ip_muxid;
769 ifr.lifr_arp_muxid = arp_muxid;
771 if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
773 ioctl (ip_fd, I_PUNLINK , arp_muxid);
774 ioctl (ip_fd, I_PUNLINK, ip_muxid);
775 syslog (LOG_ERR, "Can't set multiplexor id");
778 snprintf(dev, dev_size, "tap%d", ppa);
782 static int tap_open(char *ifname, int ifname_size)
786 if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
787 fprintf(stderr, "Cannot allocate TAP device\n");
790 pstrcpy(ifname, ifname_size, dev);
791 fcntl(fd, F_SETFL, O_NONBLOCK);
795 static int tap_open(char *ifname, int ifname_size)
800 TFR(fd = open("/dev/net/tun", O_RDWR));
802 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
805 memset(&ifr, 0, sizeof(ifr));
806 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
807 if (ifname[0] != '\0')
808 pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
810 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d");
811 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
813 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
817 pstrcpy(ifname, ifname_size, ifr.ifr_name);
818 fcntl(fd, F_SETFL, O_NONBLOCK);
823 static int launch_script(const char *setup_script, const char *ifname, int fd)
829 /* try to launch network script */
833 int open_max = sysconf (_SC_OPEN_MAX), i;
834 for (i = 0; i < open_max; i++)
835 if (i != STDIN_FILENO &&
836 i != STDOUT_FILENO &&
837 i != STDERR_FILENO &&
842 *parg++ = (char *)setup_script;
843 *parg++ = (char *)ifname;
845 execv(setup_script, args);
848 while (waitpid(pid, &status, 0) != pid);
849 if (!WIFEXITED(status) ||
850 WEXITSTATUS(status) != 0) {
851 fprintf(stderr, "%s: could not launch network script\n",
859 static int net_tap_init(VLANState *vlan, const char *ifname1,
860 const char *setup_script, const char *down_script)
867 pstrcpy(ifname, sizeof(ifname), ifname1);
870 TFR(fd = tap_open(ifname, sizeof(ifname)));
874 if (!setup_script || !strcmp(setup_script, "no"))
876 if (setup_script[0] != '\0') {
877 if (launch_script(setup_script, ifname, fd))
880 s = net_tap_fd_init(vlan, fd);
883 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
884 "tap: ifname=%s setup_script=%s", ifname, setup_script);
885 if (down_script && strcmp(down_script, "no"))
886 snprintf(s->down_script, sizeof(s->down_script), "%s", down_script);
892 #if defined(CONFIG_VDE)
893 typedef struct VDEState {
898 static void vde_to_qemu(void *opaque)
900 VDEState *s = opaque;
904 size = vde_recv(s->vde, buf, sizeof(buf), 0);
906 qemu_send_packet(s->vc, buf, size);
910 static void vde_from_qemu(void *opaque, const uint8_t *buf, int size)
912 VDEState *s = opaque;
915 ret = vde_send(s->vde, buf, size, 0);
916 if (ret < 0 && errno == EINTR) {
923 static int net_vde_init(VLANState *vlan, const char *sock, int port,
924 const char *group, int mode)
927 char *init_group = strlen(group) ? (char *)group : NULL;
928 char *init_sock = strlen(sock) ? (char *)sock : NULL;
930 struct vde_open_args args = {
936 s = qemu_mallocz(sizeof(VDEState));
939 s->vde = vde_open(init_sock, "QEMU", &args);
944 s->vc = qemu_new_vlan_client(vlan, vde_from_qemu, NULL, s);
945 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
946 snprintf(s->vc->info_str, sizeof(s->vc->info_str), "vde: sock=%s fd=%d",
947 sock, vde_datafd(s->vde));
952 /* network connection */
953 typedef struct NetSocketState {
956 int state; /* 0 = getting length, 1 = getting data */
960 struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
963 typedef struct NetSocketListenState {
966 } NetSocketListenState;
968 /* XXX: we consider we can send the whole packet without blocking */
969 static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
971 NetSocketState *s = opaque;
975 send_all(s->fd, (const uint8_t *)&len, sizeof(len));
976 send_all(s->fd, buf, size);
979 static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
981 NetSocketState *s = opaque;
982 sendto(s->fd, buf, size, 0,
983 (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
986 static void net_socket_send(void *opaque)
988 NetSocketState *s = opaque;
993 size = recv(s->fd, buf1, sizeof(buf1), 0);
995 err = socket_error();
996 if (err != EWOULDBLOCK)
998 } else if (size == 0) {
999 /* end of connection */
1001 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1007 /* reassemble a packet from the network */
1013 memcpy(s->buf + s->index, buf, l);
1017 if (s->index == 4) {
1019 s->packet_len = ntohl(*(uint32_t *)s->buf);
1025 l = s->packet_len - s->index;
1028 memcpy(s->buf + s->index, buf, l);
1032 if (s->index >= s->packet_len) {
1033 qemu_send_packet(s->vc, s->buf, s->packet_len);
1042 static void net_socket_send_dgram(void *opaque)
1044 NetSocketState *s = opaque;
1047 size = recv(s->fd, s->buf, sizeof(s->buf), 0);
1051 /* end of connection */
1052 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
1055 qemu_send_packet(s->vc, s->buf, size);
1058 static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
1063 if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
1064 fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
1065 inet_ntoa(mcastaddr->sin_addr),
1066 (int)ntohl(mcastaddr->sin_addr.s_addr));
1070 fd = socket(PF_INET, SOCK_DGRAM, 0);
1072 perror("socket(PF_INET, SOCK_DGRAM)");
1077 ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
1078 (const char *)&val, sizeof(val));
1080 perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
1084 ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
1090 /* Add host to multicast group */
1091 imr.imr_multiaddr = mcastaddr->sin_addr;
1092 imr.imr_interface.s_addr = htonl(INADDR_ANY);
1094 ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
1095 (const char *)&imr, sizeof(struct ip_mreq));
1097 perror("setsockopt(IP_ADD_MEMBERSHIP)");
1101 /* Force mcast msgs to loopback (eg. several QEMUs in same host */
1103 ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP,
1104 (const char *)&val, sizeof(val));
1106 perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
1110 socket_set_nonblock(fd);
1118 static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, int fd,
1121 struct sockaddr_in saddr;
1123 socklen_t saddr_len;
1126 /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
1127 * Because this may be "shared" socket from a "master" process, datagrams would be recv()
1128 * by ONLY ONE process: we must "clone" this dgram socket --jjo
1132 if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
1134 if (saddr.sin_addr.s_addr==0) {
1135 fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
1139 /* clone dgram socket */
1140 newfd = net_socket_mcast_create(&saddr);
1142 /* error already reported by net_socket_mcast_create() */
1146 /* clone newfd to fd, close newfd */
1151 fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
1152 fd, strerror(errno));
1157 s = qemu_mallocz(sizeof(NetSocketState));
1162 s->vc = qemu_new_vlan_client(vlan, net_socket_receive_dgram, NULL, s);
1163 qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
1165 /* mcast: save bound address as dst */
1166 if (is_connected) s->dgram_dst=saddr;
1168 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1169 "socket: fd=%d (%s mcast=%s:%d)",
1170 fd, is_connected? "cloned" : "",
1171 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1175 static void net_socket_connect(void *opaque)
1177 NetSocketState *s = opaque;
1178 qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
1181 static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, int fd,
1185 s = qemu_mallocz(sizeof(NetSocketState));
1189 s->vc = qemu_new_vlan_client(vlan,
1190 net_socket_receive, NULL, s);
1191 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1192 "socket: fd=%d", fd);
1194 net_socket_connect(s);
1196 qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
1201 static NetSocketState *net_socket_fd_init(VLANState *vlan, int fd,
1204 int so_type=-1, optlen=sizeof(so_type);
1206 if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type,
1207 (socklen_t *)&optlen)< 0) {
1208 fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd);
1213 return net_socket_fd_init_dgram(vlan, fd, is_connected);
1215 return net_socket_fd_init_stream(vlan, fd, is_connected);
1217 /* who knows ... this could be a eg. a pty, do warn and continue as stream */
1218 fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
1219 return net_socket_fd_init_stream(vlan, fd, is_connected);
1224 static void net_socket_accept(void *opaque)
1226 NetSocketListenState *s = opaque;
1228 struct sockaddr_in saddr;
1233 len = sizeof(saddr);
1234 fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
1235 if (fd < 0 && errno != EINTR) {
1237 } else if (fd >= 0) {
1241 s1 = net_socket_fd_init(s->vlan, fd, 1);
1245 snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
1246 "socket: connection from %s:%d",
1247 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1251 static int net_socket_listen_init(VLANState *vlan, const char *host_str)
1253 NetSocketListenState *s;
1255 struct sockaddr_in saddr;
1257 if (parse_host_port(&saddr, host_str) < 0)
1260 s = qemu_mallocz(sizeof(NetSocketListenState));
1264 fd = socket(PF_INET, SOCK_STREAM, 0);
1269 socket_set_nonblock(fd);
1271 /* allow fast reuse */
1273 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
1275 ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1280 ret = listen(fd, 0);
1287 qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
1291 static int net_socket_connect_init(VLANState *vlan, const char *host_str)
1294 int fd, connected, ret, err;
1295 struct sockaddr_in saddr;
1297 if (parse_host_port(&saddr, host_str) < 0)
1300 fd = socket(PF_INET, SOCK_STREAM, 0);
1305 socket_set_nonblock(fd);
1309 ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
1311 err = socket_error();
1312 if (err == EINTR || err == EWOULDBLOCK) {
1313 } else if (err == EINPROGRESS) {
1316 } else if (err == WSAEALREADY) {
1329 s = net_socket_fd_init(vlan, fd, connected);
1332 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1333 "socket: connect to %s:%d",
1334 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1338 static int net_socket_mcast_init(VLANState *vlan, const char *host_str)
1342 struct sockaddr_in saddr;
1344 if (parse_host_port(&saddr, host_str) < 0)
1348 fd = net_socket_mcast_create(&saddr);
1352 s = net_socket_fd_init(vlan, fd, 0);
1356 s->dgram_dst = saddr;
1358 snprintf(s->vc->info_str, sizeof(s->vc->info_str),
1359 "socket: mcast=%s:%d",
1360 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
1365 /* find or alloc a new VLAN */
1366 VLANState *qemu_find_vlan(int id)
1368 VLANState **pvlan, *vlan;
1369 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1373 vlan = qemu_mallocz(sizeof(VLANState));
1378 pvlan = &first_vlan;
1379 while (*pvlan != NULL)
1380 pvlan = &(*pvlan)->next;
1385 int net_client_init(const char *device, const char *p)
1392 if (get_param_value(buf, sizeof(buf), "vlan", p)) {
1393 vlan_id = strtol(buf, NULL, 0);
1395 vlan = qemu_find_vlan(vlan_id);
1397 fprintf(stderr, "Could not create vlan %d\n", vlan_id);
1400 if (!strcmp(device, "nic")) {
1404 if (nb_nics >= MAX_NICS) {
1405 fprintf(stderr, "Too Many NICs\n");
1408 nd = &nd_table[nb_nics];
1409 macaddr = nd->macaddr;
1415 macaddr[5] = 0x56 + nb_nics;
1417 if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
1418 if (parse_macaddr(macaddr, buf) < 0) {
1419 fprintf(stderr, "invalid syntax for ethernet address\n");
1423 if (get_param_value(buf, sizeof(buf), "model", p)) {
1424 nd->model = strdup(buf);
1428 vlan->nb_guest_devs++;
1431 if (!strcmp(device, "none")) {
1432 /* does nothing. It is needed to signal that no network cards
1437 if (!strcmp(device, "user")) {
1438 if (get_param_value(buf, sizeof(buf), "hostname", p)) {
1439 pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
1441 vlan->nb_host_devs++;
1442 ret = net_slirp_init(vlan);
1446 if (!strcmp(device, "tap")) {
1448 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1449 fprintf(stderr, "tap: no interface name\n");
1452 vlan->nb_host_devs++;
1453 ret = tap_win32_init(vlan, ifname);
1456 if (!strcmp(device, "tap")) {
1458 char setup_script[1024], down_script[1024];
1460 vlan->nb_host_devs++;
1461 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1462 fd = strtol(buf, NULL, 0);
1463 fcntl(fd, F_SETFL, O_NONBLOCK);
1465 if (net_tap_fd_init(vlan, fd))
1468 if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
1471 if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
1472 pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
1474 if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) {
1475 pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT);
1477 ret = net_tap_init(vlan, ifname, setup_script, down_script);
1481 if (!strcmp(device, "socket")) {
1482 if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
1484 fd = strtol(buf, NULL, 0);
1486 if (net_socket_fd_init(vlan, fd, 1))
1488 } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
1489 ret = net_socket_listen_init(vlan, buf);
1490 } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
1491 ret = net_socket_connect_init(vlan, buf);
1492 } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
1493 ret = net_socket_mcast_init(vlan, buf);
1495 fprintf(stderr, "Unknown socket options: %s\n", p);
1498 vlan->nb_host_devs++;
1501 if (!strcmp(device, "vde")) {
1502 char vde_sock[1024], vde_group[512];
1503 int vde_port, vde_mode;
1504 vlan->nb_host_devs++;
1505 if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) {
1508 if (get_param_value(buf, sizeof(buf), "port", p) > 0) {
1509 vde_port = strtol(buf, NULL, 10);
1513 if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) {
1514 vde_group[0] = '\0';
1516 if (get_param_value(buf, sizeof(buf), "mode", p) > 0) {
1517 vde_mode = strtol(buf, NULL, 8);
1521 ret = net_vde_init(vlan, vde_sock, vde_port, vde_group, vde_mode);
1525 fprintf(stderr, "Unknown network device: %s\n", device);
1529 fprintf(stderr, "Could not initialize device '%s'\n", device);
1535 int net_client_parse(const char *str)
1543 while (*p != '\0' && *p != ',') {
1544 if ((q - device) < sizeof(device) - 1)
1552 return net_client_init(device, p);
1555 void do_info_network(void)
1558 VLANClientState *vc;
1560 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1561 term_printf("VLAN %d devices:\n", vlan->id);
1562 for(vc = vlan->first_client; vc != NULL; vc = vc->next)
1563 term_printf(" %s\n", vc->info_str);
1567 void net_cleanup(void)
1571 #if !defined(_WIN32)
1572 /* close network clients */
1573 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1574 VLANClientState *vc;
1576 for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
1577 if (vc->fd_read == tap_receive) {
1579 TAPState *s = vc->opaque;
1581 if (sscanf(vc->info_str, "tap: ifname=%63s ", ifname) == 1 &&
1583 launch_script(s->down_script, ifname, s->fd);
1585 #if defined(CONFIG_VDE)
1586 if (vc->fd_read == vde_from_qemu) {
1587 VDEState *s = vc->opaque;
1596 void net_client_check(void)
1600 for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
1601 if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
1603 if (vlan->nb_guest_devs == 0)
1604 fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
1605 if (vlan->nb_host_devs == 0)
1607 "Warning: vlan %d is not connected to host network\n",