| /* |
| * QEMU System Emulator |
| * |
| * Copyright (c) 2003-2008 Fabrice Bellard |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <time.h> |
| #include <errno.h> |
| #include <sys/time.h> |
| #include <zlib.h> |
| |
| /* Needed early for HOST_BSD etc. */ |
| #include "config-host.h" |
| |
| #ifndef _WIN32 |
| #include <sys/times.h> |
| #include <sys/wait.h> |
| #include <termios.h> |
| #include <sys/mman.h> |
| #include <sys/ioctl.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <net/if.h> |
| #ifdef __NetBSD__ |
| #include <net/if_tap.h> |
| #endif |
| #ifdef __linux__ |
| #include <linux/if_tun.h> |
| #endif |
| #include <arpa/inet.h> |
| #include <dirent.h> |
| #include <netdb.h> |
| #include <sys/select.h> |
| #ifdef HOST_BSD |
| #include <sys/stat.h> |
| #if defined(__FreeBSD__) || defined(__DragonFly__) |
| #include <libutil.h> |
| #else |
| #include <util.h> |
| #endif |
| #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__) |
| #include <freebsd/stdlib.h> |
| #else |
| #ifdef __linux__ |
| #include <pty.h> |
| #include <malloc.h> |
| #include <linux/rtc.h> |
| |
| /* For the benefit of older linux systems which don't supply it, |
| we use a local copy of hpet.h. */ |
| /* #include <linux/hpet.h> */ |
| #include "hpet.h" |
| |
| #include <linux/ppdev.h> |
| #include <linux/parport.h> |
| #endif |
| #ifdef __sun__ |
| #include <sys/stat.h> |
| #include <sys/ethernet.h> |
| #include <sys/sockio.h> |
| #include <netinet/arp.h> |
| #include <netinet/in.h> |
| #include <netinet/in_systm.h> |
| #include <netinet/ip.h> |
| #include <netinet/ip_icmp.h> // must come after ip.h |
| #include <netinet/udp.h> |
| #include <netinet/tcp.h> |
| #include <net/if.h> |
| #include <syslog.h> |
| #include <stropts.h> |
| #endif |
| #endif |
| #endif |
| |
| #if defined(__OpenBSD__) |
| #include <util.h> |
| #endif |
| |
| #if defined(CONFIG_VDE) |
| #include <libvdeplug.h> |
| #endif |
| |
| #ifdef _WIN32 |
| #include <windows.h> |
| #include <malloc.h> |
| #include <sys/timeb.h> |
| #include <mmsystem.h> |
| #define getopt_long_only getopt_long |
| #define memalign(align, size) malloc(size) |
| #endif |
| |
| #include "qemu-common.h" |
| #include "net.h" |
| #include "monitor.h" |
| #include "sysemu.h" |
| #include "qemu-timer.h" |
| #include "qemu-char.h" |
| #include "audio/audio.h" |
| #include "qemu_socket.h" |
| |
| #if defined(CONFIG_SLIRP) |
| #include "libslirp.h" |
| #endif |
| |
| |
| static VLANState *first_vlan; |
| |
| /***********************************************************/ |
| /* network device redirectors */ |
| |
| #if defined(DEBUG_NET) || defined(DEBUG_SLIRP) |
| static void hex_dump(FILE *f, const uint8_t *buf, int size) |
| { |
| int len, i, j, c; |
| |
| for(i=0;i<size;i+=16) { |
| len = size - i; |
| if (len > 16) |
| len = 16; |
| fprintf(f, "%08x ", i); |
| for(j=0;j<16;j++) { |
| if (j < len) |
| fprintf(f, " %02x", buf[i+j]); |
| else |
| fprintf(f, " "); |
| } |
| fprintf(f, " "); |
| for(j=0;j<len;j++) { |
| c = buf[i+j]; |
| if (c < ' ' || c > '~') |
| c = '.'; |
| fprintf(f, "%c", c); |
| } |
| fprintf(f, "\n"); |
| } |
| } |
| #endif |
| |
| static int parse_macaddr(uint8_t *macaddr, const char *p) |
| { |
| int i; |
| char *last_char; |
| long int offset; |
| |
| errno = 0; |
| offset = strtol(p, &last_char, 0); |
| if (0 == errno && '\0' == *last_char && |
| offset >= 0 && offset <= 0xFFFFFF) { |
| macaddr[3] = (offset & 0xFF0000) >> 16; |
| macaddr[4] = (offset & 0xFF00) >> 8; |
| macaddr[5] = offset & 0xFF; |
| return 0; |
| } else { |
| for(i = 0; i < 6; i++) { |
| macaddr[i] = strtol(p, (char **)&p, 16); |
| if (i == 5) { |
| if (*p != '\0') |
| return -1; |
| } else { |
| if (*p != ':' && *p != '-') |
| return -1; |
| p++; |
| } |
| } |
| return 0; |
| } |
| |
| return -1; |
| } |
| |
| static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
| { |
| const char *p, *p1; |
| int len; |
| p = *pp; |
| p1 = strchr(p, sep); |
| if (!p1) |
| return -1; |
| len = p1 - p; |
| p1++; |
| if (buf_size > 0) { |
| if (len > buf_size - 1) |
| len = buf_size - 1; |
| memcpy(buf, p, len); |
| buf[len] = '\0'; |
| } |
| *pp = p1; |
| return 0; |
| } |
| |
| int parse_host_src_port(struct sockaddr_in *haddr, |
| struct sockaddr_in *saddr, |
| const char *input_str) |
| { |
| char *str = strdup(input_str); |
| char *host_str = str; |
| char *src_str; |
| const char *src_str2; |
| char *ptr; |
| |
| /* |
| * Chop off any extra arguments at the end of the string which |
| * would start with a comma, then fill in the src port information |
| * if it was provided else use the "any address" and "any port". |
| */ |
| if ((ptr = strchr(str,','))) |
| *ptr = '\0'; |
| |
| if ((src_str = strchr(input_str,'@'))) { |
| *src_str = '\0'; |
| src_str++; |
| } |
| |
| if (parse_host_port(haddr, host_str) < 0) |
| goto fail; |
| |
| src_str2 = src_str; |
| if (!src_str || *src_str == '\0') |
| src_str2 = ":0"; |
| |
| if (parse_host_port(saddr, src_str2) < 0) |
| goto fail; |
| |
| free(str); |
| return(0); |
| |
| fail: |
| free(str); |
| return -1; |
| } |
| |
| int parse_host_port(struct sockaddr_in *saddr, const char *str) |
| { |
| char buf[512]; |
| struct hostent *he; |
| const char *p, *r; |
| int port; |
| |
| p = str; |
| if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
| return -1; |
| saddr->sin_family = AF_INET; |
| if (buf[0] == '\0') { |
| saddr->sin_addr.s_addr = 0; |
| } else { |
| if (qemu_isdigit(buf[0])) { |
| if (!inet_aton(buf, &saddr->sin_addr)) |
| return -1; |
| } else { |
| if ((he = gethostbyname(buf)) == NULL) |
| return - 1; |
| saddr->sin_addr = *(struct in_addr *)he->h_addr; |
| } |
| } |
| port = strtol(p, (char **)&r, 0); |
| if (r == p) |
| return -1; |
| saddr->sin_port = htons(port); |
| return 0; |
| } |
| |
| #if !defined(_WIN32) && 0 |
| static int parse_unix_path(struct sockaddr_un *uaddr, const char *str) |
| { |
| const char *p; |
| int len; |
| |
| len = MIN(108, strlen(str)); |
| p = strchr(str, ','); |
| if (p) |
| len = MIN(len, p - str); |
| |
| memset(uaddr, 0, sizeof(*uaddr)); |
| |
| uaddr->sun_family = AF_UNIX; |
| memcpy(uaddr->sun_path, str, len); |
| |
| return 0; |
| } |
| #endif |
| |
| void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
| { |
| snprintf(vc->info_str, sizeof(vc->info_str), |
| "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
| vc->model, |
| macaddr[0], macaddr[1], macaddr[2], |
| macaddr[3], macaddr[4], macaddr[5]); |
| } |
| |
| static char *assign_name(VLANClientState *vc1, const char *model) |
| { |
| VLANState *vlan; |
| char buf[256]; |
| int id = 0; |
| |
| for (vlan = first_vlan; vlan; vlan = vlan->next) { |
| VLANClientState *vc; |
| |
| for (vc = vlan->first_client; vc; vc = vc->next) |
| if (vc != vc1 && strcmp(vc->model, model) == 0) |
| id++; |
| } |
| |
| snprintf(buf, sizeof(buf), "%s.%d", model, id); |
| |
| return strdup(buf); |
| } |
| |
| VLANClientState *qemu_new_vlan_client(VLANState *vlan, |
| const char *model, |
| const char *name, |
| IOReadHandler *fd_read, |
| IOCanRWHandler *fd_can_read, |
| void *opaque) |
| { |
| VLANClientState *vc, **pvc; |
| vc = qemu_mallocz(sizeof(VLANClientState)); |
| vc->model = strdup(model); |
| if (name) |
| vc->name = strdup(name); |
| else |
| vc->name = assign_name(vc, model); |
| vc->fd_read = fd_read; |
| vc->fd_can_read = fd_can_read; |
| vc->opaque = opaque; |
| vc->vlan = vlan; |
| |
| vc->next = NULL; |
| pvc = &vlan->first_client; |
| while (*pvc != NULL) |
| pvc = &(*pvc)->next; |
| *pvc = vc; |
| return vc; |
| } |
| |
| void qemu_del_vlan_client(VLANClientState *vc) |
| { |
| VLANClientState **pvc = &vc->vlan->first_client; |
| |
| while (*pvc != NULL) |
| if (*pvc == vc) { |
| *pvc = vc->next; |
| free(vc->name); |
| free(vc->model); |
| free(vc); |
| break; |
| } else |
| pvc = &(*pvc)->next; |
| } |
| |
| VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque) |
| { |
| VLANClientState **pvc = &vlan->first_client; |
| |
| while (*pvc != NULL) |
| if ((*pvc)->opaque == opaque) |
| return *pvc; |
| else |
| pvc = &(*pvc)->next; |
| |
| return NULL; |
| } |
| |
| int qemu_can_send_packet(VLANClientState *vc1) |
| { |
| VLANState *vlan = vc1->vlan; |
| VLANClientState *vc; |
| |
| for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
| if (vc != vc1) { |
| if (vc->fd_can_read && vc->fd_can_read(vc->opaque)) |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size) |
| { |
| VLANState *vlan = vc1->vlan; |
| VLANClientState *vc; |
| |
| if (vc1->link_down) |
| return; |
| |
| #ifdef DEBUG_NET |
| printf("vlan %d send:\n", vlan->id); |
| hex_dump(stdout, buf, size); |
| #endif |
| for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
| if (vc != vc1 && !vc->link_down) { |
| vc->fd_read(vc->opaque, buf, size); |
| } |
| } |
| } |
| |
| static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
| int iovcnt) |
| { |
| uint8_t buffer[4096]; |
| size_t offset = 0; |
| int i; |
| |
| for (i = 0; i < iovcnt; i++) { |
| size_t len; |
| |
| len = MIN(sizeof(buffer) - offset, iov[i].iov_len); |
| memcpy(buffer + offset, iov[i].iov_base, len); |
| offset += len; |
| } |
| |
| vc->fd_read(vc->opaque, buffer, offset); |
| |
| return offset; |
| } |
| |
| static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) |
| { |
| size_t offset = 0; |
| int i; |
| |
| for (i = 0; i < iovcnt; i++) |
| offset += iov[i].iov_len; |
| return offset; |
| } |
| |
| ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov, |
| int iovcnt) |
| { |
| VLANState *vlan = vc1->vlan; |
| VLANClientState *vc; |
| ssize_t max_len = 0; |
| |
| if (vc1->link_down) |
| return calc_iov_length(iov, iovcnt); |
| |
| for (vc = vlan->first_client; vc != NULL; vc = vc->next) { |
| ssize_t len = 0; |
| |
| if (vc == vc1) |
| continue; |
| |
| if (vc->link_down) |
| len = calc_iov_length(iov, iovcnt); |
| if (vc->fd_readv) |
| len = vc->fd_readv(vc->opaque, iov, iovcnt); |
| else if (vc->fd_read) |
| len = vc_sendv_compat(vc, iov, iovcnt); |
| |
| max_len = MAX(max_len, len); |
| } |
| |
| return max_len; |
| } |
| |
| #if defined(CONFIG_SLIRP) |
| |
| /* slirp network adapter */ |
| |
| static int slirp_inited; |
| static int slirp_restrict; |
| static char *slirp_ip; |
| static VLANClientState *slirp_vc; |
| |
| int slirp_can_output(void) |
| { |
| return !slirp_vc || qemu_can_send_packet(slirp_vc); |
| } |
| |
| void slirp_output(const uint8_t *pkt, int pkt_len) |
| { |
| #ifdef DEBUG_SLIRP |
| printf("slirp output:\n"); |
| hex_dump(stdout, pkt, pkt_len); |
| #endif |
| if (!slirp_vc) |
| return; |
| qemu_send_packet(slirp_vc, pkt, pkt_len); |
| } |
| |
| int slirp_is_inited(void) |
| { |
| return slirp_inited; |
| } |
| |
| static void slirp_receive(void *opaque, const uint8_t *buf, int size) |
| { |
| #ifdef DEBUG_SLIRP |
| printf("slirp input:\n"); |
| hex_dump(stdout, buf, size); |
| #endif |
| slirp_input(buf, size); |
| } |
| |
| static int net_slirp_init(VLANState *vlan, const char *model, const char *name) |
| { |
| if (!slirp_inited) { |
| slirp_inited = 1; |
| slirp_init(slirp_restrict, slirp_ip); |
| } |
| slirp_vc = qemu_new_vlan_client(vlan, model, name, |
| slirp_receive, NULL, NULL); |
| slirp_vc->info_str[0] = '\0'; |
| return 0; |
| } |
| |
| void net_slirp_redir(const char *redir_str) |
| { |
| int is_udp; |
| char buf[256], *r; |
| const char *p; |
| struct in_addr guest_addr; |
| int host_port, guest_port; |
| |
| if (!slirp_inited) { |
| slirp_inited = 1; |
| slirp_init(slirp_restrict, slirp_ip); |
| } |
| |
| p = redir_str; |
| if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
| goto fail; |
| if (!strcmp(buf, "tcp")) { |
| is_udp = 0; |
| } else if (!strcmp(buf, "udp")) { |
| is_udp = 1; |
| } else { |
| goto fail; |
| } |
| |
| if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
| goto fail; |
| host_port = strtol(buf, &r, 0); |
| if (r == buf) |
| goto fail; |
| |
| if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
| goto fail; |
| if (buf[0] == '\0') { |
| pstrcpy(buf, sizeof(buf), "10.0.2.15"); |
| } |
| if (!inet_aton(buf, &guest_addr)) |
| goto fail; |
| |
| guest_port = strtol(p, &r, 0); |
| if (r == p) |
| goto fail; |
| |
| if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) { |
| fprintf(stderr, "qemu: could not set up redirection\n"); |
| exit(1); |
| } |
| return; |
| fail: |
| fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n"); |
| exit(1); |
| } |
| |
| #ifndef _WIN32 |
| |
| static char smb_dir[1024]; |
| |
| static void erase_dir(char *dir_name) |
| { |
| DIR *d; |
| struct dirent *de; |
| char filename[1024]; |
| |
| /* erase all the files in the directory */ |
| if ((d = opendir(dir_name)) != NULL) { |
| for(;;) { |
| de = readdir(d); |
| if (!de) |
| break; |
| if (strcmp(de->d_name, ".") != 0 && |
| strcmp(de->d_name, "..") != 0) { |
| snprintf(filename, sizeof(filename), "%s/%s", |
| smb_dir, de->d_name); |
| if (unlink(filename) != 0) /* is it a directory? */ |
| erase_dir(filename); |
| } |
| } |
| closedir(d); |
| rmdir(dir_name); |
| } |
| } |
| |
| /* automatic user mode samba server configuration */ |
| static void smb_exit(void) |
| { |
| erase_dir(smb_dir); |
| } |
| |
| /* automatic user mode samba server configuration */ |
| void net_slirp_smb(const char *exported_dir) |
| { |
| char smb_conf[1024]; |
| char smb_cmdline[1024]; |
| FILE *f; |
| |
| if (!slirp_inited) { |
| slirp_inited = 1; |
| slirp_init(slirp_restrict, slirp_ip); |
| } |
| |
| /* XXX: better tmp dir construction */ |
| snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid()); |
| if (mkdir(smb_dir, 0700) < 0) { |
| fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir); |
| exit(1); |
| } |
| snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf"); |
| |
| f = fopen(smb_conf, "w"); |
| if (!f) { |
| fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf); |
| exit(1); |
| } |
| fprintf(f, |
| "[global]\n" |
| "private dir=%s\n" |
| "smb ports=0\n" |
| "socket address=127.0.0.1\n" |
| "pid directory=%s\n" |
| "lock directory=%s\n" |
| "log file=%s/log.smbd\n" |
| "smb passwd file=%s/smbpasswd\n" |
| "security = share\n" |
| "[qemu]\n" |
| "path=%s\n" |
| "read only=no\n" |
| "guest ok=yes\n", |
| smb_dir, |
| smb_dir, |
| smb_dir, |
| smb_dir, |
| smb_dir, |
| exported_dir |
| ); |
| fclose(f); |
| atexit(smb_exit); |
| |
| snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s", |
| SMBD_COMMAND, smb_conf); |
| |
| slirp_add_exec(0, smb_cmdline, 4, 139); |
| } |
| |
| #endif /* !defined(_WIN32) */ |
| void do_info_slirp(Monitor *mon) |
| { |
| slirp_stats(); |
| } |
| |
| struct VMChannel { |
| CharDriverState *hd; |
| int port; |
| }; |
| |
| static int vmchannel_can_read(void *opaque) |
| { |
| struct VMChannel *vmc = (struct VMChannel*)opaque; |
| return slirp_socket_can_recv(4, vmc->port); |
| } |
| |
| static void vmchannel_read(void *opaque, const uint8_t *buf, int size) |
| { |
| struct VMChannel *vmc = (struct VMChannel*)opaque; |
| slirp_socket_recv(4, vmc->port, buf, size); |
| } |
| |
| #endif /* CONFIG_SLIRP */ |
| |
| #if !defined(_WIN32) |
| |
| typedef struct TAPState { |
| VLANClientState *vc; |
| int fd; |
| char down_script[1024]; |
| char down_script_arg[128]; |
| } TAPState; |
| |
| #ifdef HAVE_IOVEC |
| static ssize_t tap_receive_iov(void *opaque, const struct iovec *iov, |
| int iovcnt) |
| { |
| TAPState *s = opaque; |
| ssize_t len; |
| |
| do { |
| len = writev(s->fd, iov, iovcnt); |
| } while (len == -1 && (errno == EINTR || errno == EAGAIN)); |
| |
| return len; |
| } |
| #endif |
| |
| static void tap_receive(void *opaque, const uint8_t *buf, int size) |
| { |
| TAPState *s = opaque; |
| int ret; |
| for(;;) { |
| ret = write(s->fd, buf, size); |
| if (ret < 0 && (errno == EINTR || errno == EAGAIN)) { |
| } else { |
| break; |
| } |
| } |
| } |
| |
| static void tap_send(void *opaque) |
| { |
| TAPState *s = opaque; |
| uint8_t buf[4096]; |
| int size; |
| |
| #ifdef __sun__ |
| struct strbuf sbuf; |
| int f = 0; |
| sbuf.maxlen = sizeof(buf); |
| sbuf.buf = buf; |
| size = getmsg(s->fd, NULL, &sbuf, &f) >=0 ? sbuf.len : -1; |
| #else |
| size = read(s->fd, buf, sizeof(buf)); |
| #endif |
| if (size > 0) { |
| qemu_send_packet(s->vc, buf, size); |
| } |
| } |
| |
| /* fd support */ |
| |
| static TAPState *net_tap_fd_init(VLANState *vlan, |
| const char *model, |
| const char *name, |
| int fd) |
| { |
| TAPState *s; |
| |
| s = qemu_mallocz(sizeof(TAPState)); |
| s->fd = fd; |
| s->vc = qemu_new_vlan_client(vlan, model, name, tap_receive, NULL, s); |
| #ifdef HAVE_IOVEC |
| s->vc->fd_readv = tap_receive_iov; |
| #endif |
| qemu_set_fd_handler(s->fd, tap_send, NULL, s); |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd); |
| return s; |
| } |
| |
| #if defined (HOST_BSD) || defined (__FreeBSD_kernel__) |
| static int tap_open(char *ifname, int ifname_size) |
| { |
| int fd; |
| char *dev; |
| struct stat s; |
| |
| TFR(fd = open("/dev/tap", O_RDWR)); |
| if (fd < 0) { |
| fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n"); |
| return -1; |
| } |
| |
| fstat(fd, &s); |
| dev = devname(s.st_rdev, S_IFCHR); |
| pstrcpy(ifname, ifname_size, dev); |
| |
| fcntl(fd, F_SETFL, O_NONBLOCK); |
| return fd; |
| } |
| #elif defined(__sun__) |
| #define TUNNEWPPA (('T'<<16) | 0x0001) |
| /* |
| * Allocate TAP device, returns opened fd. |
| * Stores dev name in the first arg(must be large enough). |
| */ |
| int tap_alloc(char *dev, size_t dev_size) |
| { |
| int tap_fd, if_fd, ppa = -1; |
| static int ip_fd = 0; |
| char *ptr; |
| |
| static int arp_fd = 0; |
| int ip_muxid, arp_muxid; |
| struct strioctl strioc_if, strioc_ppa; |
| int link_type = I_PLINK;; |
| struct lifreq ifr; |
| char actual_name[32] = ""; |
| |
| memset(&ifr, 0x0, sizeof(ifr)); |
| |
| if( *dev ){ |
| ptr = dev; |
| while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++; |
| ppa = atoi(ptr); |
| } |
| |
| /* Check if IP device was opened */ |
| if( ip_fd ) |
| close(ip_fd); |
| |
| TFR(ip_fd = open("/dev/udp", O_RDWR, 0)); |
| if (ip_fd < 0) { |
| syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)"); |
| return -1; |
| } |
| |
| TFR(tap_fd = open("/dev/tap", O_RDWR, 0)); |
| if (tap_fd < 0) { |
| syslog(LOG_ERR, "Can't open /dev/tap"); |
| return -1; |
| } |
| |
| /* Assign a new PPA and get its unit number. */ |
| strioc_ppa.ic_cmd = TUNNEWPPA; |
| strioc_ppa.ic_timout = 0; |
| strioc_ppa.ic_len = sizeof(ppa); |
| strioc_ppa.ic_dp = (char *)&ppa; |
| if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0) |
| syslog (LOG_ERR, "Can't assign new interface"); |
| |
| TFR(if_fd = open("/dev/tap", O_RDWR, 0)); |
| if (if_fd < 0) { |
| syslog(LOG_ERR, "Can't open /dev/tap (2)"); |
| return -1; |
| } |
| if(ioctl(if_fd, I_PUSH, "ip") < 0){ |
| syslog(LOG_ERR, "Can't push IP module"); |
| return -1; |
| } |
| |
| if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) |
| syslog(LOG_ERR, "Can't get flags\n"); |
| |
| snprintf (actual_name, 32, "tap%d", ppa); |
| pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); |
| |
| ifr.lifr_ppa = ppa; |
| /* Assign ppa according to the unit number returned by tun device */ |
| |
| if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) |
| syslog (LOG_ERR, "Can't set PPA %d", ppa); |
| if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) |
| syslog (LOG_ERR, "Can't get flags\n"); |
| /* Push arp module to if_fd */ |
| if (ioctl (if_fd, I_PUSH, "arp") < 0) |
| syslog (LOG_ERR, "Can't push ARP module (2)"); |
| |
| /* Push arp module to ip_fd */ |
| if (ioctl (ip_fd, I_POP, NULL) < 0) |
| syslog (LOG_ERR, "I_POP failed\n"); |
| if (ioctl (ip_fd, I_PUSH, "arp") < 0) |
| syslog (LOG_ERR, "Can't push ARP module (3)\n"); |
| /* Open arp_fd */ |
| TFR(arp_fd = open ("/dev/tap", O_RDWR, 0)); |
| if (arp_fd < 0) |
| syslog (LOG_ERR, "Can't open %s\n", "/dev/tap"); |
| |
| /* Set ifname to arp */ |
| strioc_if.ic_cmd = SIOCSLIFNAME; |
| strioc_if.ic_timout = 0; |
| strioc_if.ic_len = sizeof(ifr); |
| strioc_if.ic_dp = (char *)𝔦 |
| if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ |
| syslog (LOG_ERR, "Can't set ifname to arp\n"); |
| } |
| |
| if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){ |
| syslog(LOG_ERR, "Can't link TAP device to IP"); |
| return -1; |
| } |
| |
| if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0) |
| syslog (LOG_ERR, "Can't link TAP device to ARP"); |
| |
| close (if_fd); |
| |
| memset(&ifr, 0x0, sizeof(ifr)); |
| pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name); |
| ifr.lifr_ip_muxid = ip_muxid; |
| ifr.lifr_arp_muxid = arp_muxid; |
| |
| if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0) |
| { |
| ioctl (ip_fd, I_PUNLINK , arp_muxid); |
| ioctl (ip_fd, I_PUNLINK, ip_muxid); |
| syslog (LOG_ERR, "Can't set multiplexor id"); |
| } |
| |
| snprintf(dev, dev_size, "tap%d", ppa); |
| return tap_fd; |
| } |
| |
| static int tap_open(char *ifname, int ifname_size) |
| { |
| char dev[10]=""; |
| int fd; |
| if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){ |
| fprintf(stderr, "Cannot allocate TAP device\n"); |
| return -1; |
| } |
| pstrcpy(ifname, ifname_size, dev); |
| fcntl(fd, F_SETFL, O_NONBLOCK); |
| return fd; |
| } |
| #elif defined (_AIX) |
| static int tap_open(char *ifname, int ifname_size) |
| { |
| fprintf (stderr, "no tap on AIX\n"); |
| return -1; |
| } |
| #else |
| static int tap_open(char *ifname, int ifname_size) |
| { |
| struct ifreq ifr; |
| int fd, ret; |
| |
| TFR(fd = open("/dev/net/tun", O_RDWR)); |
| if (fd < 0) { |
| fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n"); |
| return -1; |
| } |
| memset(&ifr, 0, sizeof(ifr)); |
| ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
| if (ifname[0] != '\0') |
| pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname); |
| else |
| pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%d"); |
| ret = ioctl(fd, TUNSETIFF, (void *) &ifr); |
| if (ret != 0) { |
| fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n"); |
| close(fd); |
| return -1; |
| } |
| pstrcpy(ifname, ifname_size, ifr.ifr_name); |
| fcntl(fd, F_SETFL, O_NONBLOCK); |
| return fd; |
| } |
| #endif |
| |
| static int launch_script(const char *setup_script, const char *ifname, int fd) |
| { |
| int pid, status; |
| char *args[3]; |
| char **parg; |
| |
| /* try to launch network script */ |
| pid = fork(); |
| if (pid >= 0) { |
| if (pid == 0) { |
| int open_max = sysconf (_SC_OPEN_MAX), i; |
| for (i = 0; i < open_max; i++) |
| if (i != STDIN_FILENO && |
| i != STDOUT_FILENO && |
| i != STDERR_FILENO && |
| i != fd) |
| close(i); |
| |
| parg = args; |
| *parg++ = (char *)setup_script; |
| *parg++ = (char *)ifname; |
| *parg++ = NULL; |
| execv(setup_script, args); |
| _exit(1); |
| } |
| while (waitpid(pid, &status, 0) != pid); |
| if (!WIFEXITED(status) || |
| WEXITSTATUS(status) != 0) { |
| fprintf(stderr, "%s: could not launch network script\n", |
| setup_script); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static int net_tap_init(VLANState *vlan, const char *model, |
| const char *name, const char *ifname1, |
| const char *setup_script, const char *down_script) |
| { |
| TAPState *s; |
| int fd; |
| char ifname[128]; |
| |
| if (ifname1 != NULL) |
| pstrcpy(ifname, sizeof(ifname), ifname1); |
| else |
| ifname[0] = '\0'; |
| TFR(fd = tap_open(ifname, sizeof(ifname))); |
| if (fd < 0) |
| return -1; |
| |
| if (!setup_script || !strcmp(setup_script, "no")) |
| setup_script = ""; |
| if (setup_script[0] != '\0') { |
| if (launch_script(setup_script, ifname, fd)) |
| return -1; |
| } |
| s = net_tap_fd_init(vlan, model, name, fd); |
| if (!s) |
| return -1; |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
| "ifname=%s,script=%s,downscript=%s", |
| ifname, setup_script, down_script); |
| if (down_script && strcmp(down_script, "no")) { |
| snprintf(s->down_script, sizeof(s->down_script), "%s", down_script); |
| snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname); |
| } |
| return 0; |
| } |
| |
| #endif /* !_WIN32 */ |
| |
| #if defined(CONFIG_VDE) |
| typedef struct VDEState { |
| VLANClientState *vc; |
| VDECONN *vde; |
| } VDEState; |
| |
| static void vde_to_qemu(void *opaque) |
| { |
| VDEState *s = opaque; |
| uint8_t buf[4096]; |
| int size; |
| |
| size = vde_recv(s->vde, buf, sizeof(buf), 0); |
| if (size > 0) { |
| qemu_send_packet(s->vc, buf, size); |
| } |
| } |
| |
| static void vde_from_qemu(void *opaque, const uint8_t *buf, int size) |
| { |
| VDEState *s = opaque; |
| int ret; |
| for(;;) { |
| ret = vde_send(s->vde, buf, size, 0); |
| if (ret < 0 && errno == EINTR) { |
| } else { |
| break; |
| } |
| } |
| } |
| |
| static int net_vde_init(VLANState *vlan, const char *model, |
| const char *name, const char *sock, |
| int port, const char *group, int mode) |
| { |
| VDEState *s; |
| char *init_group = strlen(group) ? (char *)group : NULL; |
| char *init_sock = strlen(sock) ? (char *)sock : NULL; |
| |
| struct vde_open_args args = { |
| .port = port, |
| .group = init_group, |
| .mode = mode, |
| }; |
| |
| s = qemu_mallocz(sizeof(VDEState)); |
| s->vde = vde_open(init_sock, "QEMU", &args); |
| if (!s->vde){ |
| free(s); |
| return -1; |
| } |
| s->vc = qemu_new_vlan_client(vlan, model, name, vde_from_qemu, NULL, s); |
| qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), "sock=%s,fd=%d", |
| sock, vde_datafd(s->vde)); |
| return 0; |
| } |
| #endif |
| |
| /* network connection */ |
| typedef struct NetSocketState { |
| VLANClientState *vc; |
| int fd; |
| int state; /* 0 = getting length, 1 = getting data */ |
| unsigned int index; |
| unsigned int packet_len; |
| uint8_t buf[4096]; |
| struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */ |
| } NetSocketState; |
| |
| typedef struct NetSocketListenState { |
| VLANState *vlan; |
| char *model; |
| char *name; |
| int fd; |
| } NetSocketListenState; |
| |
| /* XXX: we consider we can send the whole packet without blocking */ |
| static void net_socket_receive(void *opaque, const uint8_t *buf, int size) |
| { |
| NetSocketState *s = opaque; |
| uint32_t len; |
| len = htonl(size); |
| |
| send_all(s->fd, (const uint8_t *)&len, sizeof(len)); |
| send_all(s->fd, buf, size); |
| } |
| |
| static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size) |
| { |
| NetSocketState *s = opaque; |
| sendto(s->fd, buf, size, 0, |
| (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst)); |
| } |
| |
| static void net_socket_send(void *opaque) |
| { |
| NetSocketState *s = opaque; |
| int size, err; |
| unsigned l; |
| uint8_t buf1[4096]; |
| const uint8_t *buf; |
| |
| size = recv(s->fd, buf1, sizeof(buf1), 0); |
| if (size < 0) { |
| err = socket_error(); |
| if (err != EWOULDBLOCK) |
| goto eoc; |
| } else if (size == 0) { |
| /* end of connection */ |
| eoc: |
| qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
| closesocket(s->fd); |
| return; |
| } |
| buf = buf1; |
| while (size > 0) { |
| /* reassemble a packet from the network */ |
| switch(s->state) { |
| case 0: |
| l = 4 - s->index; |
| if (l > size) |
| l = size; |
| memcpy(s->buf + s->index, buf, l); |
| buf += l; |
| size -= l; |
| s->index += l; |
| if (s->index == 4) { |
| /* got length */ |
| s->packet_len = ntohl(*(uint32_t *)s->buf); |
| s->index = 0; |
| s->state = 1; |
| } |
| break; |
| case 1: |
| l = s->packet_len - s->index; |
| if (l > size) |
| l = size; |
| if (s->index + l <= sizeof(s->buf)) { |
| memcpy(s->buf + s->index, buf, l); |
| } else { |
| fprintf(stderr, "serious error: oversized packet received," |
| "connection terminated.\n"); |
| s->state = 0; |
| goto eoc; |
| } |
| |
| s->index += l; |
| buf += l; |
| size -= l; |
| if (s->index >= s->packet_len) { |
| qemu_send_packet(s->vc, s->buf, s->packet_len); |
| s->index = 0; |
| s->state = 0; |
| } |
| break; |
| } |
| } |
| } |
| |
| static void net_socket_send_dgram(void *opaque) |
| { |
| NetSocketState *s = opaque; |
| int size; |
| |
| size = recv(s->fd, s->buf, sizeof(s->buf), 0); |
| if (size < 0) |
| return; |
| if (size == 0) { |
| /* end of connection */ |
| qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
| return; |
| } |
| qemu_send_packet(s->vc, s->buf, size); |
| } |
| |
| static int net_socket_mcast_create(struct sockaddr_in *mcastaddr) |
| { |
| struct ip_mreq imr; |
| int fd; |
| int val, ret; |
| if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) { |
| fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n", |
| inet_ntoa(mcastaddr->sin_addr), |
| (int)ntohl(mcastaddr->sin_addr.s_addr)); |
| return -1; |
| |
| } |
| fd = socket(PF_INET, SOCK_DGRAM, 0); |
| if (fd < 0) { |
| perror("socket(PF_INET, SOCK_DGRAM)"); |
| return -1; |
| } |
| |
| val = 1; |
| ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, |
| (const char *)&val, sizeof(val)); |
| if (ret < 0) { |
| perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)"); |
| goto fail; |
| } |
| |
| ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr)); |
| if (ret < 0) { |
| perror("bind"); |
| goto fail; |
| } |
| |
| /* Add host to multicast group */ |
| imr.imr_multiaddr = mcastaddr->sin_addr; |
| imr.imr_interface.s_addr = htonl(INADDR_ANY); |
| |
| ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, |
| (const char *)&imr, sizeof(struct ip_mreq)); |
| if (ret < 0) { |
| perror("setsockopt(IP_ADD_MEMBERSHIP)"); |
| goto fail; |
| } |
| |
| /* Force mcast msgs to loopback (eg. several QEMUs in same host */ |
| val = 1; |
| ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, |
| (const char *)&val, sizeof(val)); |
| if (ret < 0) { |
| perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)"); |
| goto fail; |
| } |
| |
| socket_set_nonblock(fd); |
| return fd; |
| fail: |
| if (fd >= 0) |
| closesocket(fd); |
| return -1; |
| } |
| |
| static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, |
| const char *model, |
| const char *name, |
| int fd, int is_connected) |
| { |
| struct sockaddr_in saddr; |
| int newfd; |
| socklen_t saddr_len; |
| NetSocketState *s; |
| |
| /* fd passed: multicast: "learn" dgram_dst address from bound address and save it |
| * Because this may be "shared" socket from a "master" process, datagrams would be recv() |
| * by ONLY ONE process: we must "clone" this dgram socket --jjo |
| */ |
| |
| if (is_connected) { |
| if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) { |
| /* must be bound */ |
| if (saddr.sin_addr.s_addr==0) { |
| fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n", |
| fd); |
| return NULL; |
| } |
| /* clone dgram socket */ |
| newfd = net_socket_mcast_create(&saddr); |
| if (newfd < 0) { |
| /* error already reported by net_socket_mcast_create() */ |
| close(fd); |
| return NULL; |
| } |
| /* clone newfd to fd, close newfd */ |
| dup2(newfd, fd); |
| close(newfd); |
| |
| } else { |
| fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n", |
| fd, strerror(errno)); |
| return NULL; |
| } |
| } |
| |
| s = qemu_mallocz(sizeof(NetSocketState)); |
| s->fd = fd; |
| |
| s->vc = qemu_new_vlan_client(vlan, model, name, net_socket_receive_dgram, NULL, s); |
| qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s); |
| |
| /* mcast: save bound address as dst */ |
| if (is_connected) s->dgram_dst=saddr; |
| |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
| "socket: fd=%d (%s mcast=%s:%d)", |
| fd, is_connected? "cloned" : "", |
| inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| return s; |
| } |
| |
| static void net_socket_connect(void *opaque) |
| { |
| NetSocketState *s = opaque; |
| qemu_set_fd_handler(s->fd, net_socket_send, NULL, s); |
| } |
| |
| static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, |
| const char *model, |
| const char *name, |
| int fd, int is_connected) |
| { |
| NetSocketState *s; |
| s = qemu_mallocz(sizeof(NetSocketState)); |
| s->fd = fd; |
| s->vc = qemu_new_vlan_client(vlan, model, name, |
| net_socket_receive, NULL, s); |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
| "socket: fd=%d", fd); |
| if (is_connected) { |
| net_socket_connect(s); |
| } else { |
| qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s); |
| } |
| return s; |
| } |
| |
| static NetSocketState *net_socket_fd_init(VLANState *vlan, |
| const char *model, const char *name, |
| int fd, int is_connected) |
| { |
| int so_type=-1, optlen=sizeof(so_type); |
| |
| if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, |
| (socklen_t *)&optlen)< 0) { |
| fprintf(stderr, "qemu: error: getsockopt(SO_TYPE) for fd=%d failed\n", fd); |
| return NULL; |
| } |
| switch(so_type) { |
| case SOCK_DGRAM: |
| return net_socket_fd_init_dgram(vlan, model, name, fd, is_connected); |
| case SOCK_STREAM: |
| return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); |
| default: |
| /* who knows ... this could be a eg. a pty, do warn and continue as stream */ |
| fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd); |
| return net_socket_fd_init_stream(vlan, model, name, fd, is_connected); |
| } |
| return NULL; |
| } |
| |
| static void net_socket_accept(void *opaque) |
| { |
| NetSocketListenState *s = opaque; |
| NetSocketState *s1; |
| struct sockaddr_in saddr; |
| socklen_t len; |
| int fd; |
| |
| for(;;) { |
| len = sizeof(saddr); |
| fd = accept(s->fd, (struct sockaddr *)&saddr, &len); |
| if (fd < 0 && errno != EINTR) { |
| return; |
| } else if (fd >= 0) { |
| break; |
| } |
| } |
| s1 = net_socket_fd_init(s->vlan, s->model, s->name, fd, 1); |
| if (!s1) { |
| closesocket(fd); |
| } else { |
| snprintf(s1->vc->info_str, sizeof(s1->vc->info_str), |
| "socket: connection from %s:%d", |
| inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| } |
| } |
| |
| static int net_socket_listen_init(VLANState *vlan, |
| const char *model, |
| const char *name, |
| const char *host_str) |
| { |
| NetSocketListenState *s; |
| int fd, val, ret; |
| struct sockaddr_in saddr; |
| |
| if (parse_host_port(&saddr, host_str) < 0) |
| return -1; |
| |
| s = qemu_mallocz(sizeof(NetSocketListenState)); |
| |
| fd = socket(PF_INET, SOCK_STREAM, 0); |
| if (fd < 0) { |
| perror("socket"); |
| return -1; |
| } |
| socket_set_nonblock(fd); |
| |
| /* allow fast reuse */ |
| val = 1; |
| setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val)); |
| |
| ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
| if (ret < 0) { |
| perror("bind"); |
| return -1; |
| } |
| ret = listen(fd, 0); |
| if (ret < 0) { |
| perror("listen"); |
| return -1; |
| } |
| s->vlan = vlan; |
| s->model = strdup(model); |
| s->name = strdup(name); |
| s->fd = fd; |
| qemu_set_fd_handler(fd, net_socket_accept, NULL, s); |
| return 0; |
| } |
| |
| static int net_socket_connect_init(VLANState *vlan, |
| const char *model, |
| const char *name, |
| const char *host_str) |
| { |
| NetSocketState *s; |
| int fd, connected, ret, err; |
| struct sockaddr_in saddr; |
| |
| if (parse_host_port(&saddr, host_str) < 0) |
| return -1; |
| |
| fd = socket(PF_INET, SOCK_STREAM, 0); |
| if (fd < 0) { |
| perror("socket"); |
| return -1; |
| } |
| socket_set_nonblock(fd); |
| |
| connected = 0; |
| for(;;) { |
| ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr)); |
| if (ret < 0) { |
| err = socket_error(); |
| if (err == EINTR || err == EWOULDBLOCK) { |
| } else if (err == EINPROGRESS) { |
| break; |
| #ifdef _WIN32 |
| } else if (err == WSAEALREADY) { |
| break; |
| #endif |
| } else { |
| perror("connect"); |
| closesocket(fd); |
| return -1; |
| } |
| } else { |
| connected = 1; |
| break; |
| } |
| } |
| s = net_socket_fd_init(vlan, model, name, fd, connected); |
| if (!s) |
| return -1; |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
| "socket: connect to %s:%d", |
| inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| return 0; |
| } |
| |
| static int net_socket_mcast_init(VLANState *vlan, |
| const char *model, |
| const char *name, |
| const char *host_str) |
| { |
| NetSocketState *s; |
| int fd; |
| struct sockaddr_in saddr; |
| |
| if (parse_host_port(&saddr, host_str) < 0) |
| return -1; |
| |
| |
| fd = net_socket_mcast_create(&saddr); |
| if (fd < 0) |
| return -1; |
| |
| s = net_socket_fd_init(vlan, model, name, fd, 0); |
| if (!s) |
| return -1; |
| |
| s->dgram_dst = saddr; |
| |
| snprintf(s->vc->info_str, sizeof(s->vc->info_str), |
| "socket: mcast=%s:%d", |
| inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); |
| return 0; |
| |
| } |
| |
| /* find or alloc a new VLAN */ |
| VLANState *qemu_find_vlan(int id) |
| { |
| VLANState **pvlan, *vlan; |
| for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
| if (vlan->id == id) |
| return vlan; |
| } |
| vlan = qemu_mallocz(sizeof(VLANState)); |
| vlan->id = id; |
| vlan->next = NULL; |
| pvlan = &first_vlan; |
| while (*pvlan != NULL) |
| pvlan = &(*pvlan)->next; |
| *pvlan = vlan; |
| return vlan; |
| } |
| |
| static int nic_get_free_idx(void) |
| { |
| int index; |
| |
| for (index = 0; index < MAX_NICS; index++) |
| if (!nd_table[index].used) |
| return index; |
| return -1; |
| } |
| |
| void qemu_check_nic_model(NICInfo *nd, const char *model) |
| { |
| const char *models[2]; |
| |
| models[0] = model; |
| models[1] = NULL; |
| |
| qemu_check_nic_model_list(nd, models, model); |
| } |
| |
| void qemu_check_nic_model_list(NICInfo *nd, const char * const *models, |
| const char *default_model) |
| { |
| int i, exit_status = 0; |
| |
| if (!nd->model) |
| nd->model = strdup(default_model); |
| |
| if (strcmp(nd->model, "?") != 0) { |
| for (i = 0 ; models[i]; i++) |
| if (strcmp(nd->model, models[i]) == 0) |
| return; |
| |
| fprintf(stderr, "qemu: Unsupported NIC model: %s\n", nd->model); |
| exit_status = 1; |
| } |
| |
| fprintf(stderr, "qemu: Supported NIC models: "); |
| for (i = 0 ; models[i]; i++) |
| fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
| |
| exit(exit_status); |
| } |
| |
| int net_client_init(const char *device, const char *p) |
| { |
| char buf[1024]; |
| int vlan_id, ret; |
| VLANState *vlan; |
| char *name = NULL; |
| |
| vlan_id = 0; |
| if (get_param_value(buf, sizeof(buf), "vlan", p)) { |
| vlan_id = strtol(buf, NULL, 0); |
| } |
| vlan = qemu_find_vlan(vlan_id); |
| if (!vlan) { |
| fprintf(stderr, "Could not create vlan %d\n", vlan_id); |
| return -1; |
| } |
| if (get_param_value(buf, sizeof(buf), "name", p)) { |
| name = strdup(buf); |
| } |
| if (!strcmp(device, "nic")) { |
| NICInfo *nd; |
| uint8_t *macaddr; |
| int idx = nic_get_free_idx(); |
| |
| if (idx == -1 || nb_nics >= MAX_NICS) { |
| fprintf(stderr, "Too Many NICs\n"); |
| return -1; |
| } |
| nd = &nd_table[idx]; |
| macaddr = nd->macaddr; |
| macaddr[0] = 0x52; |
| macaddr[1] = 0x54; |
| macaddr[2] = 0x00; |
| macaddr[3] = 0x12; |
| macaddr[4] = 0x34; |
| macaddr[5] = 0x56 + idx; |
| |
| if (get_param_value(buf, sizeof(buf), "macaddr", p)) { |
| if (parse_macaddr(macaddr, buf) < 0) { |
| fprintf(stderr, "invalid syntax for ethernet address\n"); |
| return -1; |
| } |
| } |
| if (get_param_value(buf, sizeof(buf), "model", p)) { |
| nd->model = strdup(buf); |
| } |
| nd->vlan = vlan; |
| nd->name = name; |
| nd->used = 1; |
| name = NULL; |
| nb_nics++; |
| vlan->nb_guest_devs++; |
| ret = idx; |
| } else |
| if (!strcmp(device, "none")) { |
| /* does nothing. It is needed to signal that no network cards |
| are wanted */ |
| ret = 0; |
| } else |
| #ifdef CONFIG_SLIRP |
| if (!strcmp(device, "user")) { |
| if (get_param_value(buf, sizeof(buf), "hostname", p)) { |
| pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf); |
| } |
| if (get_param_value(buf, sizeof(buf), "restrict", p)) { |
| slirp_restrict = (buf[0] == 'y') ? 1 : 0; |
| } |
| if (get_param_value(buf, sizeof(buf), "ip", p)) { |
| slirp_ip = strdup(buf); |
| } |
| vlan->nb_host_devs++; |
| ret = net_slirp_init(vlan, device, name); |
| } else if (!strcmp(device, "channel")) { |
| long port; |
| char name[20], *devname; |
| struct VMChannel *vmc; |
| |
| port = strtol(p, &devname, 10); |
| devname++; |
| if (port < 1 || port > 65535) { |
| fprintf(stderr, "vmchannel wrong port number\n"); |
| return -1; |
| } |
| vmc = malloc(sizeof(struct VMChannel)); |
| snprintf(name, 20, "vmchannel%ld", port); |
| vmc->hd = qemu_chr_open(name, devname, NULL); |
| if (!vmc->hd) { |
| fprintf(stderr, "qemu: could not open vmchannel device" |
| "'%s'\n", devname); |
| return -1; |
| } |
| vmc->port = port; |
| slirp_add_exec(3, vmc->hd, 4, port); |
| qemu_chr_add_handlers(vmc->hd, vmchannel_can_read, vmchannel_read, |
| NULL, vmc); |
| ret = 0; |
| } else |
| #endif |
| #ifdef _WIN32 |
| if (!strcmp(device, "tap")) { |
| char ifname[64]; |
| if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { |
| fprintf(stderr, "tap: no interface name\n"); |
| return -1; |
| } |
| vlan->nb_host_devs++; |
| ret = tap_win32_init(vlan, device, name, ifname); |
| } else |
| #elif defined (_AIX) |
| #else |
| if (!strcmp(device, "tap")) { |
| char ifname[64]; |
| char setup_script[1024], down_script[1024]; |
| int fd; |
| vlan->nb_host_devs++; |
| if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { |
| fd = strtol(buf, NULL, 0); |
| fcntl(fd, F_SETFL, O_NONBLOCK); |
| ret = -1; |
| if (net_tap_fd_init(vlan, device, name, fd)) |
| ret = 0; |
| } else { |
| if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) { |
| ifname[0] = '\0'; |
| } |
| if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) { |
| pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT); |
| } |
| if (get_param_value(down_script, sizeof(down_script), "downscript", p) == 0) { |
| pstrcpy(down_script, sizeof(down_script), DEFAULT_NETWORK_DOWN_SCRIPT); |
| } |
| ret = net_tap_init(vlan, device, name, ifname, setup_script, down_script); |
| } |
| } else |
| #endif |
| if (!strcmp(device, "socket")) { |
| if (get_param_value(buf, sizeof(buf), "fd", p) > 0) { |
| int fd; |
| fd = strtol(buf, NULL, 0); |
| ret = -1; |
| if (net_socket_fd_init(vlan, device, name, fd, 1)) |
| ret = 0; |
| } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) { |
| ret = net_socket_listen_init(vlan, device, name, buf); |
| } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) { |
| ret = net_socket_connect_init(vlan, device, name, buf); |
| } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) { |
| ret = net_socket_mcast_init(vlan, device, name, buf); |
| } else { |
| fprintf(stderr, "Unknown socket options: %s\n", p); |
| return -1; |
| } |
| vlan->nb_host_devs++; |
| } else |
| #ifdef CONFIG_VDE |
| if (!strcmp(device, "vde")) { |
| char vde_sock[1024], vde_group[512]; |
| int vde_port, vde_mode; |
| vlan->nb_host_devs++; |
| if (get_param_value(vde_sock, sizeof(vde_sock), "sock", p) <= 0) { |
| vde_sock[0] = '\0'; |
| } |
| if (get_param_value(buf, sizeof(buf), "port", p) > 0) { |
| vde_port = strtol(buf, NULL, 10); |
| } else { |
| vde_port = 0; |
| } |
| if (get_param_value(vde_group, sizeof(vde_group), "group", p) <= 0) { |
| vde_group[0] = '\0'; |
| } |
| if (get_param_value(buf, sizeof(buf), "mode", p) > 0) { |
| vde_mode = strtol(buf, NULL, 8); |
| } else { |
| vde_mode = 0700; |
| } |
| ret = net_vde_init(vlan, device, name, vde_sock, vde_port, vde_group, vde_mode); |
| } else |
| #endif |
| { |
| fprintf(stderr, "Unknown network device: %s\n", device); |
| if (name) |
| free(name); |
| return -1; |
| } |
| if (ret < 0) { |
| fprintf(stderr, "Could not initialize device '%s'\n", device); |
| } |
| if (name) |
| free(name); |
| return ret; |
| } |
| |
| void net_client_uninit(NICInfo *nd) |
| { |
| nd->vlan->nb_guest_devs--; |
| nb_nics--; |
| nd->used = 0; |
| free((void *)nd->model); |
| } |
| |
| static int net_host_check_device(const char *device) |
| { |
| int i; |
| const char *valid_param_list[] = { "tap", "socket" |
| #ifdef CONFIG_SLIRP |
| ,"user" |
| #endif |
| #ifdef CONFIG_VDE |
| ,"vde" |
| #endif |
| }; |
| for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
| if (!strncmp(valid_param_list[i], device, |
| strlen(valid_param_list[i]))) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| void net_host_device_add(Monitor *mon, const char *device, const char *opts) |
| { |
| if (!net_host_check_device(device)) { |
| monitor_printf(mon, "invalid host network device %s\n", device); |
| return; |
| } |
| net_client_init(device, opts); |
| } |
| |
| void net_host_device_remove(Monitor *mon, int vlan_id, const char *device) |
| { |
| VLANState *vlan; |
| VLANClientState *vc; |
| |
| vlan = qemu_find_vlan(vlan_id); |
| if (!vlan) { |
| monitor_printf(mon, "can't find vlan %d\n", vlan_id); |
| return; |
| } |
| |
| for(vc = vlan->first_client; vc != NULL; vc = vc->next) |
| if (!strcmp(vc->name, device)) |
| break; |
| |
| if (!vc) { |
| monitor_printf(mon, "can't find device %s\n", device); |
| return; |
| } |
| qemu_del_vlan_client(vc); |
| } |
| |
| int net_client_parse(const char *str) |
| { |
| const char *p; |
| char *q; |
| char device[64]; |
| |
| p = str; |
| q = device; |
| while (*p != '\0' && *p != ',') { |
| if ((q - device) < sizeof(device) - 1) |
| *q++ = *p; |
| p++; |
| } |
| *q = '\0'; |
| if (*p == ',') |
| p++; |
| |
| return net_client_init(device, p); |
| } |
| |
| void do_info_network(Monitor *mon) |
| { |
| VLANState *vlan; |
| VLANClientState *vc; |
| |
| for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
| monitor_printf(mon, "VLAN %d devices:\n", vlan->id); |
| for(vc = vlan->first_client; vc != NULL; vc = vc->next) |
| monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str); |
| } |
| } |
| |
| int do_set_link(Monitor *mon, const char *name, const char *up_or_down) |
| { |
| VLANState *vlan; |
| VLANClientState *vc = NULL; |
| |
| for (vlan = first_vlan; vlan != NULL; vlan = vlan->next) |
| for (vc = vlan->first_client; vc != NULL; vc = vc->next) |
| if (strcmp(vc->name, name) == 0) |
| goto done; |
| done: |
| |
| if (!vc) { |
| monitor_printf(mon, "could not find network device '%s'", name); |
| return 0; |
| } |
| |
| if (strcmp(up_or_down, "up") == 0) |
| vc->link_down = 0; |
| else if (strcmp(up_or_down, "down") == 0) |
| vc->link_down = 1; |
| else |
| monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' " |
| "valid\n", up_or_down); |
| |
| if (vc->link_status_changed) |
| vc->link_status_changed(vc); |
| |
| return 1; |
| } |
| |
| void net_cleanup(void) |
| { |
| VLANState *vlan; |
| |
| #if !defined(_WIN32) |
| /* close network clients */ |
| for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
| VLANClientState *vc; |
| |
| for(vc = vlan->first_client; vc != NULL; vc = vc->next) { |
| if (vc->fd_read == tap_receive) { |
| TAPState *s = vc->opaque; |
| |
| if (s->down_script[0]) |
| launch_script(s->down_script, s->down_script_arg, s->fd); |
| } |
| #if defined(CONFIG_VDE) |
| if (vc->fd_read == vde_from_qemu) { |
| VDEState *s = vc->opaque; |
| vde_close(s->vde); |
| } |
| #endif |
| } |
| } |
| #endif |
| } |
| |
| void net_client_check(void) |
| { |
| VLANState *vlan; |
| |
| for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) { |
| if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
| continue; |
| if (vlan->nb_guest_devs == 0) |
| fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id); |
| if (vlan->nb_host_devs == 0) |
| fprintf(stderr, |
| "Warning: vlan %d is not connected to host network\n", |
| vlan->id); |
| } |
| } |
