static int net_socket_udp_init(NetClientState *peer,
const char *model,
const char *name,
const char *rhost,
const char *lhost)
{
NetSocketState *s;
int fd, val, ret;
struct sockaddr_in laddr, raddr;
if (parse_host_port(&laddr, lhost) < 0) {
return -1;
}
if (parse_host_port(&raddr, rhost) < 0) {
return -1;
}
fd = qemu_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)");
closesocket(fd);
return -1;
}
ret = bind(fd, (struct sockaddr *)&laddr, sizeof(laddr));
if (ret < 0) {
perror("bind");
closesocket(fd);
return -1;
}
s = net_socket_fd_init(peer, model, name, fd, 0);
if (!s) {
return -1;
}
s->dgram_dst = raddr;
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
"socket: udp=%s:%d",
inet_ntoa(raddr.sin_addr), ntohs(raddr.sin_port));
return 0;
}
static int net_socket_connect_init(NetClientState *peer,
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 = qemu_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 || err == WSAEINVAL) {
break;
#endif
} else {
perror("connect");
closesocket(fd);
return -1;
}
} else {
connected = 1;
break;
}
}
s = net_socket_fd_init(peer, model, name, fd, connected);
if (!s)
return -1;
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
"socket: connect to %s:%d",
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
return 0;
}
static int net_socket_mcast_init(NetClientState *peer,
const char *model,
const char *name,
const char *host_str,
const char *localaddr_str)
{
NetSocketState *s;
int fd;
struct sockaddr_in saddr;
struct in_addr localaddr, *param_localaddr;
if (parse_host_port(&saddr, host_str) < 0)
return -1;
if (localaddr_str != NULL) {
if (inet_aton(localaddr_str, &localaddr) == 0)
return -1;
param_localaddr = &localaddr;
} else {
param_localaddr = NULL;
}
fd = net_socket_mcast_create(&saddr, param_localaddr);
if (fd < 0)
return -1;
s = net_socket_fd_init(peer, model, name, fd, 0);
if (!s)
return -1;
s->dgram_dst = saddr;
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
"socket: mcast=%s:%d",
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
return 0;
}
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 = qemu_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) {
snprintf(s1->nc.info_str, sizeof(s1->nc.info_str),
"socket: connection from %s:%d",
inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
}
}
int net_init_socket(const NetClientOptions *opts, const char *name,
NetClientState *peer)
{
const NetdevSocketOptions *sock;
assert(opts->kind == NET_CLIENT_OPTIONS_KIND_SOCKET);
sock = opts->socket;
if (sock->has_fd + sock->has_listen + sock->has_connect + sock->has_mcast +
sock->has_udp != 1) {
error_report("exactly one of fd=, listen=, connect=, mcast= or udp="
" is required");
return -1;
}
if (sock->has_localaddr && !sock->has_mcast && !sock->has_udp) {
error_report("localaddr= is only valid with mcast= or udp=");
return -1;
}
if (sock->has_fd) {
int fd;
fd = net_handle_fd_param(cur_mon, sock->fd);
if (fd == -1 || !net_socket_fd_init(peer, "socket", name, fd, 1)) {
return -1;
}
return 0;
}
if (sock->has_listen) {
if (net_socket_listen_init(peer, "socket", name, sock->listen) == -1) {
return -1;
}
return 0;
}
if (sock->has_connect) {
if (net_socket_connect_init(peer, "socket", name, sock->connect) ==
-1) {
return -1;
}
return 0;
}
if (sock->has_mcast) {
/* if sock->localaddr is missing, it has been initialized to "all bits
* zero" */
if (net_socket_mcast_init(peer, "socket", name, sock->mcast,
sock->localaddr) == -1) {
return -1;
}
return 0;
}
assert(sock->has_udp);
if (!sock->has_localaddr) {
error_report("localaddr= is mandatory with udp=");
return -1;
}
if (net_socket_udp_init(peer, "udp", name, sock->udp, sock->localaddr) ==
-1) {
return -1;
}
return 0;
}
int net_init_socket(QemuOpts *opts,
Monitor *mon,
const char *name,
VLANState *vlan)
{
if (qemu_opt_get(opts, "fd")) {
int fd;
if (qemu_opt_get(opts, "listen") ||
qemu_opt_get(opts, "connect") ||
qemu_opt_get(opts, "mcast") ||
qemu_opt_get(opts, "localaddr")) {
error_report("listen=, connect=, mcast= and localaddr= is invalid with fd=");
return -1;
}
fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
if (fd == -1) {
return -1;
}
if (!net_socket_fd_init(vlan, "socket", name, fd, 1)) {
return -1;
}
} else if (qemu_opt_get(opts, "listen")) {
const char *listen;
if (qemu_opt_get(opts, "fd") ||
qemu_opt_get(opts, "connect") ||
qemu_opt_get(opts, "mcast") ||
qemu_opt_get(opts, "localaddr")) {
error_report("fd=, connect=, mcast= and localaddr= is invalid with listen=");
return -1;
}
listen = qemu_opt_get(opts, "listen");
if (net_socket_listen_init(vlan, "socket", name, listen) == -1) {
return -1;
}
} else if (qemu_opt_get(opts, "connect")) {
const char *connect;
if (qemu_opt_get(opts, "fd") ||
qemu_opt_get(opts, "listen") ||
qemu_opt_get(opts, "mcast") ||
qemu_opt_get(opts, "localaddr")) {
error_report("fd=, listen=, mcast= and localaddr= is invalid with connect=");
return -1;
}
connect = qemu_opt_get(opts, "connect");
if (net_socket_connect_init(vlan, "socket", name, connect) == -1) {
return -1;
}
} else if (qemu_opt_get(opts, "mcast")) {
const char *mcast, *localaddr;
if (qemu_opt_get(opts, "fd") ||
qemu_opt_get(opts, "connect") ||
qemu_opt_get(opts, "listen")) {
error_report("fd=, connect= and listen= is invalid with mcast=");
return -1;
}
mcast = qemu_opt_get(opts, "mcast");
localaddr = qemu_opt_get(opts, "localaddr");
if (net_socket_mcast_init(vlan, "socket", name, mcast, localaddr) == -1) {
return -1;
}
} else if (qemu_opt_get(opts, "udp")) {
const char *udp, *localaddr;
if (qemu_opt_get(opts, "fd") ||
qemu_opt_get(opts, "connect") ||
qemu_opt_get(opts, "listen") ||
qemu_opt_get(opts, "mcast")) {
error_report("fd=, connect=, listen=\
and mcast= is invalid with udp=");
return -1;
}
udp = qemu_opt_get(opts, "udp");
localaddr = qemu_opt_get(opts, "localaddr");
if (localaddr == NULL) {
error_report("localaddr= is mandatory with udp=");
return -1;
}
if (net_socket_udp_init(vlan, "udp", name, udp, localaddr) == -1) {
return -1;
}
} else {
