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",