* 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 CONFIG_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 "tap-linux.h"
-#endif
-#include <arpa/inet.h>
-#include <dirent.h>
-#include <netdb.h>
-#include <sys/select.h>
-#ifdef CONFIG_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
+#include "net.h"
-#if defined(CONFIG_VDE)
-#include <libvdeplug.h>
-#endif
+#include "config-host.h"
-#include "qemu-common.h"
-#include "net.h"
+#include "net/tap.h"
+#include "net/socket.h"
+#include "net/dump.h"
+#include "net/slirp.h"
+#include "net/vde.h"
+#include "net/util.h"
#include "monitor.h"
-#include "sysemu.h"
-#include "qemu-timer.h"
-#include "qemu-char.h"
-#include "audio/audio.h"
+#include "qemu-common.h"
#include "qemu_socket.h"
-#include "qemu-log.h"
-#include "qemu-config.h"
-
-#include "slirp/libslirp.h"
+#include "hw/qdev.h"
+#include "iov.h"
static QTAILQ_HEAD(, VLANState) vlans;
static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
+int default_net = 1;
+
/***********************************************************/
/* network device redirectors */
-#if defined(DEBUG_NET) || defined(DEBUG_SLIRP)
+#if defined(DEBUG_NET)
static void hex_dump(FILE *f, const uint8_t *buf, int size)
{
int len, i, j, c;
}
#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;
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];
int iovcnt,
void *opaque);
-VLANClientState *qemu_new_vlan_client(net_client_type type,
- VLANState *vlan,
- VLANClientState *peer,
- const char *model,
- const char *name,
- NetCanReceive *can_receive,
- NetReceive *receive,
- NetReceiveIOV *receive_iov,
- NetCleanup *cleanup,
- void *opaque)
+VLANClientState *qemu_new_net_client(NetClientInfo *info,
+ VLANState *vlan,
+ VLANClientState *peer,
+ const char *model,
+ const char *name)
{
VLANClientState *vc;
- vc = qemu_mallocz(sizeof(VLANClientState));
+ assert(info->size >= sizeof(VLANClientState));
+
+ vc = qemu_mallocz(info->size);
- vc->type = type;
+ vc->info = info;
vc->model = qemu_strdup(model);
- if (name)
+ if (name) {
vc->name = qemu_strdup(name);
- else
+ } else {
vc->name = assign_name(vc, model);
- vc->can_receive = can_receive;
- vc->receive = receive;
- vc->receive_iov = receive_iov;
- vc->cleanup = cleanup;
- vc->opaque = opaque;
+ }
if (vlan) {
assert(!peer);
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
} else {
if (peer) {
+ assert(!peer->peer);
vc->peer = peer;
peer->peer = vc;
}
return vc;
}
-void qemu_del_vlan_client(VLANClientState *vc)
+NICState *qemu_new_nic(NetClientInfo *info,
+ NICConf *conf,
+ const char *model,
+ const char *name,
+ void *opaque)
+{
+ VLANClientState *nc;
+ NICState *nic;
+
+ assert(info->type == NET_CLIENT_TYPE_NIC);
+ assert(info->size >= sizeof(NICState));
+
+ nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
+
+ nic = DO_UPCAST(NICState, nc, nc);
+ nic->conf = conf;
+ nic->opaque = opaque;
+
+ return nic;
+}
+
+static void qemu_cleanup_vlan_client(VLANClientState *vc)
{
if (vc->vlan) {
QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
} else {
+ QTAILQ_REMOVE(&non_vlan_clients, vc, next);
+ }
+
+ if (vc->info->cleanup) {
+ vc->info->cleanup(vc);
+ }
+}
+
+static void qemu_free_vlan_client(VLANClientState *vc)
+{
+ if (!vc->vlan) {
if (vc->send_queue) {
qemu_del_net_queue(vc->send_queue);
}
- QTAILQ_REMOVE(&non_vlan_clients, vc, next);
if (vc->peer) {
vc->peer->peer = NULL;
}
}
-
- if (vc->cleanup) {
- vc->cleanup(vc);
- }
-
qemu_free(vc->name);
qemu_free(vc->model);
qemu_free(vc);
}
-VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
+void qemu_del_vlan_client(VLANClientState *vc)
{
- VLANClientState *vc;
+ /* If there is a peer NIC, delete and cleanup client, but do not free. */
+ if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
+ NICState *nic = DO_UPCAST(NICState, nc, vc->peer);
+ if (nic->peer_deleted) {
+ return;
+ }
+ nic->peer_deleted = true;
+ /* Let NIC know peer is gone. */
+ vc->peer->link_down = true;
+ if (vc->peer->info->link_status_changed) {
+ vc->peer->info->link_status_changed(vc->peer);
+ }
+ qemu_cleanup_vlan_client(vc);
+ return;
+ }
- QTAILQ_FOREACH(vc, &vlan->clients, next) {
- if (vc->opaque == opaque) {
- return vc;
+ /* If this is a peer NIC and peer has already been deleted, free it now. */
+ if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
+ NICState *nic = DO_UPCAST(NICState, nc, vc);
+ if (nic->peer_deleted) {
+ qemu_free_vlan_client(vc->peer);
}
}
- return NULL;
+ qemu_cleanup_vlan_client(vc);
+ qemu_free_vlan_client(vc);
}
-static VLANClientState *
+VLANClientState *
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
const char *client_str)
{
return vc;
}
+void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
+{
+ VLANClientState *nc;
+ VLANState *vlan;
+
+ QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
+ if (nc->info->type == NET_CLIENT_TYPE_NIC) {
+ func(DO_UPCAST(NICState, nc, nc), opaque);
+ }
+ }
+
+ QTAILQ_FOREACH(vlan, &vlans, next) {
+ QTAILQ_FOREACH(nc, &vlan->clients, next) {
+ if (nc->info->type == NET_CLIENT_TYPE_NIC) {
+ func(DO_UPCAST(NICState, nc, nc), opaque);
+ }
+ }
+ }
+}
+
int qemu_can_send_packet(VLANClientState *sender)
{
VLANState *vlan = sender->vlan;
VLANClientState *vc;
if (sender->peer) {
- if (!sender->peer->can_receive ||
- sender->peer->can_receive(sender->peer)) {
- return 1;
- } else {
+ if (sender->peer->receive_disabled) {
return 0;
+ } else if (sender->peer->info->can_receive &&
+ !sender->peer->info->can_receive(sender->peer)) {
+ return 0;
+ } else {
+ return 1;
}
}
}
/* no can_receive() handler, they can always receive */
- if (!vc->can_receive || vc->can_receive(vc)) {
- return 1;
+ if (vc->info->can_receive && !vc->info->can_receive(vc)) {
+ return 0;
}
}
- return 0;
+ return 1;
}
static ssize_t qemu_deliver_packet(VLANClientState *sender,
void *opaque)
{
VLANClientState *vc = opaque;
+ ssize_t ret;
if (vc->link_down) {
return size;
}
- return vc->receive(vc, data, size);
+ if (vc->receive_disabled) {
+ return 0;
+ }
+
+ if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
+ ret = vc->info->receive_raw(vc, data, size);
+ } else {
+ ret = vc->info->receive(vc, data, size);
+ }
+
+ if (ret == 0) {
+ vc->receive_disabled = 1;
+ };
+
+ return ret;
}
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
{
VLANState *vlan = opaque;
VLANClientState *vc;
- int ret = -1;
+ ssize_t ret = -1;
QTAILQ_FOREACH(vc, &vlan->clients, next) {
ssize_t len;
continue;
}
- len = vc->receive(vc, buf, size);
+ if (vc->receive_disabled) {
+ ret = 0;
+ continue;
+ }
+
+ if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
+ len = vc->info->receive_raw(vc, buf, size);
+ } else {
+ len = vc->info->receive(vc, buf, size);
+ }
+
+ if (len == 0) {
+ vc->receive_disabled = 1;
+ }
ret = (ret >= 0) ? ret : len;
+
}
return ret;
{
NetQueue *queue;
+ vc->receive_disabled = 0;
+
if (vc->vlan) {
queue = vc->vlan->send_queue;
} else {
qemu_net_queue_flush(queue);
}
-ssize_t qemu_send_packet_async(VLANClientState *sender,
- const uint8_t *buf, int size,
- NetPacketSent *sent_cb)
+static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
+ unsigned flags,
+ const uint8_t *buf, int size,
+ NetPacketSent *sent_cb)
{
NetQueue *queue;
queue = sender->vlan->send_queue;
}
- return qemu_net_queue_send(queue, sender,
- QEMU_NET_PACKET_FLAG_NONE,
- buf, size, sent_cb);
+ return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
+}
+
+ssize_t qemu_send_packet_async(VLANClientState *sender,
+ const uint8_t *buf, int size,
+ NetPacketSent *sent_cb)
+{
+ return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
+ buf, size, sent_cb);
}
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
qemu_send_packet_async(vc, buf, size, NULL);
}
+ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
+{
+ return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
+ buf, size, NULL);
+}
+
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;
- }
+ size_t offset;
- return vc->receive(vc, buffer, offset);
-}
-
-static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
-{
- size_t offset = 0;
- int i;
+ offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer));
- for (i = 0; i < iovcnt; i++)
- offset += iov[i].iov_len;
- return offset;
+ return vc->info->receive(vc, buffer, offset);
}
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
VLANClientState *vc = opaque;
if (vc->link_down) {
- return calc_iov_length(iov, iovcnt);
+ return iov_size(iov, iovcnt);
}
- if (vc->receive_iov) {
- return vc->receive_iov(vc, iov, iovcnt);
+ if (vc->info->receive_iov) {
+ return vc->info->receive_iov(vc, iov, iovcnt);
} else {
return vc_sendv_compat(vc, iov, iovcnt);
}
}
if (vc->link_down) {
- ret = calc_iov_length(iov, iovcnt);
+ ret = iov_size(iov, iovcnt);
continue;
}
- if (vc->receive_iov) {
- len = vc->receive_iov(vc, iov, iovcnt);
+ assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
+
+ if (vc->info->receive_iov) {
+ len = vc->info->receive_iov(vc, iov, iovcnt);
} else {
len = vc_sendv_compat(vc, iov, iovcnt);
}
NetQueue *queue;
if (sender->link_down || (!sender->peer && !sender->vlan)) {
- return calc_iov_length(iov, iovcnt);
+ return iov_size(iov, iovcnt);
}
if (sender->peer) {
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
}
-#if defined(CONFIG_SLIRP)
-
-/* slirp network adapter */
-
-#define SLIRP_CFG_HOSTFWD 1
-#define SLIRP_CFG_LEGACY 2
+/* find or alloc a new VLAN */
+VLANState *qemu_find_vlan(int id, int allocate)
+{
+ VLANState *vlan;
-struct slirp_config_str {
- struct slirp_config_str *next;
- int flags;
- char str[1024];
- int legacy_format;
-};
+ QTAILQ_FOREACH(vlan, &vlans, next) {
+ if (vlan->id == id) {
+ return vlan;
+ }
+ }
-typedef struct SlirpState {
- QTAILQ_ENTRY(SlirpState) entry;
- VLANClientState *vc;
- Slirp *slirp;
-#ifndef _WIN32
- char smb_dir[128];
-#endif
-} SlirpState;
+ if (!allocate) {
+ return NULL;
+ }
-static struct slirp_config_str *slirp_configs;
-const char *legacy_tftp_prefix;
-const char *legacy_bootp_filename;
-static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
- QTAILQ_HEAD_INITIALIZER(slirp_stacks);
+ vlan = qemu_mallocz(sizeof(VLANState));
+ vlan->id = id;
+ QTAILQ_INIT(&vlan->clients);
-static int slirp_hostfwd(SlirpState *s, const char *redir_str,
- int legacy_format);
-static int slirp_guestfwd(SlirpState *s, const char *config_str,
- int legacy_format);
+ vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
+ qemu_vlan_deliver_packet_iov,
+ vlan);
-#ifndef _WIN32
-static const char *legacy_smb_export;
+ QTAILQ_INSERT_TAIL(&vlans, vlan, next);
-static int slirp_smb(SlirpState *s, const char *exported_dir,
- struct in_addr vserver_addr);
-static void slirp_smb_cleanup(SlirpState *s);
-#else
-static inline void slirp_smb_cleanup(SlirpState *s) { }
-#endif
+ return vlan;
+}
-int slirp_can_output(void *opaque)
+VLANClientState *qemu_find_netdev(const char *id)
{
- SlirpState *s = opaque;
+ VLANClientState *vc;
+
+ QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
+ if (!strcmp(vc->name, id)) {
+ return vc;
+ }
+ }
- return qemu_can_send_packet(s->vc);
+ return NULL;
}
-void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
+static int nic_get_free_idx(void)
{
- SlirpState *s = opaque;
+ int index;
-#ifdef DEBUG_SLIRP
- printf("slirp output:\n");
- hex_dump(stdout, pkt, pkt_len);
-#endif
- qemu_send_packet(s->vc, pkt, pkt_len);
+ for (index = 0; index < MAX_NICS; index++)
+ if (!nd_table[index].used)
+ return index;
+ return -1;
}
-static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
+int qemu_show_nic_models(const char *arg, const char *const *models)
{
- SlirpState *s = vc->opaque;
+ int i;
-#ifdef DEBUG_SLIRP
- printf("slirp input:\n");
- hex_dump(stdout, buf, size);
-#endif
- slirp_input(s->slirp, buf, size);
- return size;
+ if (!arg || strcmp(arg, "?"))
+ return 0;
+
+ fprintf(stderr, "qemu: Supported NIC models: ");
+ for (i = 0 ; models[i]; i++)
+ fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
+ return 1;
}
-static void net_slirp_cleanup(VLANClientState *vc)
+void qemu_check_nic_model(NICInfo *nd, const char *model)
{
- SlirpState *s = vc->opaque;
+ const char *models[2];
- slirp_cleanup(s->slirp);
- slirp_smb_cleanup(s);
- QTAILQ_REMOVE(&slirp_stacks, s, entry);
- qemu_free(s);
+ models[0] = model;
+ models[1] = NULL;
+
+ if (qemu_show_nic_models(nd->model, models))
+ exit(0);
+ if (qemu_find_nic_model(nd, models, model) < 0)
+ exit(1);
}
-static int net_slirp_init(VLANState *vlan, const char *model,
- const char *name, int restricted,
- const char *vnetwork, const char *vhost,
- const char *vhostname, const char *tftp_export,
- const char *bootfile, const char *vdhcp_start,
- const char *vnameserver, const char *smb_export,
- const char *vsmbserver)
+int qemu_find_nic_model(NICInfo *nd, const char * const *models,
+ const char *default_model)
{
- /* default settings according to historic slirp */
- struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
- struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
- struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
- struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
- struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
-#ifndef _WIN32
- struct in_addr smbsrv = { .s_addr = 0 };
-#endif
- SlirpState *s;
- char buf[20];
- uint32_t addr;
- int shift;
- char *end;
- struct slirp_config_str *config;
-
- if (!tftp_export) {
- tftp_export = legacy_tftp_prefix;
- }
- if (!bootfile) {
- bootfile = legacy_bootp_filename;
- }
+ int i;
- if (vnetwork) {
- if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
- if (!inet_aton(vnetwork, &net)) {
- return -1;
- }
- addr = ntohl(net.s_addr);
- if (!(addr & 0x80000000)) {
- mask.s_addr = htonl(0xff000000); /* class A */
- } else if ((addr & 0xfff00000) == 0xac100000) {
- mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
- } else if ((addr & 0xc0000000) == 0x80000000) {
- mask.s_addr = htonl(0xffff0000); /* class B */
- } else if ((addr & 0xffff0000) == 0xc0a80000) {
- mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
- } else if ((addr & 0xffff0000) == 0xc6120000) {
- mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
- } else if ((addr & 0xe0000000) == 0xe0000000) {
- mask.s_addr = htonl(0xffffff00); /* class C */
- } else {
- mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
- }
- } else {
- if (!inet_aton(buf, &net)) {
- return -1;
- }
- shift = strtol(vnetwork, &end, 10);
- if (*end != '\0') {
- if (!inet_aton(vnetwork, &mask)) {
- return -1;
- }
- } else if (shift < 4 || shift > 32) {
- return -1;
- } else {
- mask.s_addr = htonl(0xffffffff << (32 - shift));
- }
- }
- net.s_addr &= mask.s_addr;
- host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
- dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
- dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
- }
+ if (!nd->model)
+ nd->model = qemu_strdup(default_model);
- if (vhost && !inet_aton(vhost, &host)) {
- return -1;
- }
- if ((host.s_addr & mask.s_addr) != net.s_addr) {
- return -1;
+ for (i = 0 ; models[i]; i++) {
+ if (strcmp(nd->model, models[i]) == 0)
+ return i;
}
- if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
- return -1;
- }
- if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
- dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
- return -1;
- }
+ error_report("Unsupported NIC model: %s", nd->model);
+ return -1;
+}
- if (vnameserver && !inet_aton(vnameserver, &dns)) {
- return -1;
- }
- if ((dns.s_addr & mask.s_addr) != net.s_addr ||
- dns.s_addr == host.s_addr) {
- return -1;
- }
+int net_handle_fd_param(Monitor *mon, const char *param)
+{
+ int fd;
-#ifndef _WIN32
- if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
- return -1;
- }
-#endif
+ if (!qemu_isdigit(param[0]) && mon) {
- s = qemu_mallocz(sizeof(SlirpState));
- s->slirp = slirp_init(restricted, net, mask, host, vhostname,
- tftp_export, bootfile, dhcp, dns, s);
- QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
+ fd = monitor_get_fd(mon, param);
+ if (fd == -1) {
+ error_report("No file descriptor named %s found", param);
+ return -1;
+ }
+ } else {
+ char *endptr = NULL;
- for (config = slirp_configs; config; config = config->next) {
- if (config->flags & SLIRP_CFG_HOSTFWD) {
- if (slirp_hostfwd(s, config->str,
- config->flags & SLIRP_CFG_LEGACY) < 0)
- return -1;
- } else {
- if (slirp_guestfwd(s, config->str,
- config->flags & SLIRP_CFG_LEGACY) < 0)
- return -1;
- }
- }
-#ifndef _WIN32
- if (!smb_export) {
- smb_export = legacy_smb_export;
- }
- if (smb_export) {
- if (slirp_smb(s, smb_export, smbsrv) < 0)
- return -1;
- }
-#endif
-
- s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
- vlan, NULL, model, name, NULL,
- slirp_receive, NULL,
- net_slirp_cleanup, s);
- snprintf(s->vc->info_str, sizeof(s->vc->info_str),
- "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
- return 0;
-}
-
-static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
- const char *stack)
-{
- VLANClientState *vc;
-
- if (vlan) {
- vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
- if (!vc) {
- return NULL;
- }
- if (strcmp(vc->model, "user")) {
- monitor_printf(mon, "invalid device specified\n");
- return NULL;
- }
- return vc->opaque;
- } else {
- if (QTAILQ_EMPTY(&slirp_stacks)) {
- monitor_printf(mon, "user mode network stack not in use\n");
- return NULL;
- }
- return QTAILQ_FIRST(&slirp_stacks);
- }
-}
-
-void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
-{
- struct in_addr host_addr = { .s_addr = INADDR_ANY };
- int host_port;
- char buf[256] = "";
- const char *src_str, *p;
- SlirpState *s;
- int is_udp = 0;
- int err;
- const char *arg1 = qdict_get_str(qdict, "arg1");
- const char *arg2 = qdict_get_try_str(qdict, "arg2");
- const char *arg3 = qdict_get_try_str(qdict, "arg3");
-
- if (arg2) {
- s = slirp_lookup(mon, arg1, arg2);
- src_str = arg3;
- } else {
- s = slirp_lookup(mon, NULL, NULL);
- src_str = arg1;
- }
- if (!s) {
- return;
- }
-
- if (!src_str || !src_str[0])
- goto fail_syntax;
-
- p = src_str;
- get_str_sep(buf, sizeof(buf), &p, ':');
-
- if (!strcmp(buf, "tcp") || buf[0] == '\0') {
- is_udp = 0;
- } else if (!strcmp(buf, "udp")) {
- is_udp = 1;
- } else {
- goto fail_syntax;
- }
-
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
- goto fail_syntax;
- }
-
- host_port = atoi(p);
-
- err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
- host_addr, host_port);
-
- monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
- err ? "removed" : "not found");
- return;
-
- fail_syntax:
- monitor_printf(mon, "invalid format\n");
-}
-
-static int slirp_hostfwd(SlirpState *s, const char *redir_str,
- int legacy_format)
-{
- struct in_addr host_addr = { .s_addr = INADDR_ANY };
- struct in_addr guest_addr = { .s_addr = 0 };
- int host_port, guest_port;
- const char *p;
- char buf[256];
- int is_udp;
- char *end;
-
- p = redir_str;
- if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- if (!strcmp(buf, "tcp") || buf[0] == '\0') {
- is_udp = 0;
- } else if (!strcmp(buf, "udp")) {
- is_udp = 1;
- } else {
- goto fail_syntax;
- }
-
- if (!legacy_format) {
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
- goto fail_syntax;
- }
- }
-
- if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
- goto fail_syntax;
- }
- host_port = strtol(buf, &end, 0);
- if (*end != '\0' || host_port < 1 || host_port > 65535) {
- goto fail_syntax;
- }
-
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
- goto fail_syntax;
- }
-
- guest_port = strtol(p, &end, 0);
- if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
- goto fail_syntax;
- }
-
- if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
- guest_port) < 0) {
- qemu_error("could not set up host forwarding rule '%s'\n",
- redir_str);
- return -1;
- }
- return 0;
-
- fail_syntax:
- qemu_error("invalid host forwarding rule '%s'\n", redir_str);
- return -1;
-}
-
-void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
-{
- const char *redir_str;
- SlirpState *s;
- const char *arg1 = qdict_get_str(qdict, "arg1");
- const char *arg2 = qdict_get_try_str(qdict, "arg2");
- const char *arg3 = qdict_get_try_str(qdict, "arg3");
-
- if (arg2) {
- s = slirp_lookup(mon, arg1, arg2);
- redir_str = arg3;
- } else {
- s = slirp_lookup(mon, NULL, NULL);
- redir_str = arg1;
- }
- if (s) {
- slirp_hostfwd(s, redir_str, 0);
- }
-
-}
-
-int net_slirp_redir(const char *redir_str)
-{
- struct slirp_config_str *config;
-
- if (QTAILQ_EMPTY(&slirp_stacks)) {
- config = qemu_malloc(sizeof(*config));
- pstrcpy(config->str, sizeof(config->str), redir_str);
- config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
- config->next = slirp_configs;
- slirp_configs = config;
- return 0;
- }
-
- return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
-}
-
-#ifndef _WIN32
-
-/* automatic user mode samba server configuration */
-static void slirp_smb_cleanup(SlirpState *s)
-{
- char cmd[128];
-
- if (s->smb_dir[0] != '\0') {
- snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
- system(cmd);
- s->smb_dir[0] = '\0';
- }
-}
-
-static int slirp_smb(SlirpState* s, const char *exported_dir,
- struct in_addr vserver_addr)
-{
- static int instance;
- char smb_conf[128];
- char smb_cmdline[128];
- FILE *f;
-
- snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
- (long)getpid(), instance++);
- if (mkdir(s->smb_dir, 0700) < 0) {
- qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
- return -1;
- }
- snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
-
- f = fopen(smb_conf, "w");
- if (!f) {
- slirp_smb_cleanup(s);
- qemu_error("could not create samba server configuration file '%s'\n",
- smb_conf);
- return -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",
- s->smb_dir,
- s->smb_dir,
- s->smb_dir,
- s->smb_dir,
- s->smb_dir,
- exported_dir
- );
- fclose(f);
-
- snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
- SMBD_COMMAND, smb_conf);
-
- if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
- slirp_smb_cleanup(s);
- qemu_error("conflicting/invalid smbserver address\n");
- return -1;
- }
- return 0;
-}
-
-/* automatic user mode samba server configuration (legacy interface) */
-int net_slirp_smb(const char *exported_dir)
-{
- struct in_addr vserver_addr = { .s_addr = 0 };
-
- if (legacy_smb_export) {
- fprintf(stderr, "-smb given twice\n");
- return -1;
- }
- legacy_smb_export = exported_dir;
- if (!QTAILQ_EMPTY(&slirp_stacks)) {
- return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
- vserver_addr);
- }
- return 0;
-}
-
-#endif /* !defined(_WIN32) */
-
-struct GuestFwd {
- CharDriverState *hd;
- struct in_addr server;
- int port;
- Slirp *slirp;
-};
-
-static int guestfwd_can_read(void *opaque)
-{
- struct GuestFwd *fwd = opaque;
- return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
-}
-
-static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
-{
- struct GuestFwd *fwd = opaque;
- slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
-}
-
-static int slirp_guestfwd(SlirpState *s, const char *config_str,
- int legacy_format)
-{
- struct in_addr server = { .s_addr = 0 };
- struct GuestFwd *fwd;
- const char *p;
- char buf[128];
- char *end;
- int port;
-
- p = config_str;
- if (legacy_format) {
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- } else {
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- if (strcmp(buf, "tcp") && buf[0] != '\0') {
- goto fail_syntax;
- }
- if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
- goto fail_syntax;
- }
- if (buf[0] != '\0' && !inet_aton(buf, &server)) {
- goto fail_syntax;
- }
- if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
- goto fail_syntax;
- }
- }
- port = strtol(buf, &end, 10);
- if (*end != '\0' || port < 1 || port > 65535) {
- goto fail_syntax;
- }
-
- fwd = qemu_malloc(sizeof(struct GuestFwd));
- snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
- fwd->hd = qemu_chr_open(buf, p, NULL);
- if (!fwd->hd) {
- qemu_error("could not open guest forwarding device '%s'\n", buf);
- qemu_free(fwd);
- return -1;
- }
-
- if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
- qemu_error("conflicting/invalid host:port in guest forwarding "
- "rule '%s'\n", config_str);
- qemu_free(fwd);
- return -1;
- }
- fwd->server = server;
- fwd->port = port;
- fwd->slirp = s->slirp;
-
- qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
- NULL, fwd);
- return 0;
-
- fail_syntax:
- qemu_error("invalid guest forwarding rule '%s'\n", config_str);
- return -1;
-}
-
-void do_info_usernet(Monitor *mon)
-{
- SlirpState *s;
-
- QTAILQ_FOREACH(s, &slirp_stacks, entry) {
- monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
- slirp_connection_info(s->slirp, mon);
- }
-}
-
-#endif /* CONFIG_SLIRP */
-
-#if defined(_WIN32)
-int tap_has_vnet_hdr(VLANClientState *vc)
-{
- return 0;
-}
-void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
-{
-}
-#else /* !defined(_WIN32) */
-
-/* Maximum GSO packet size (64k) plus plenty of room for
- * the ethernet and virtio_net headers
- */
-#define TAP_BUFSIZE (4096 + 65536)
-
-typedef struct TAPState {
- VLANClientState *vc;
- int fd;
- char down_script[1024];
- char down_script_arg[128];
- uint8_t buf[TAP_BUFSIZE];
- unsigned int read_poll : 1;
- unsigned int write_poll : 1;
- unsigned int has_vnet_hdr : 1;
- unsigned int using_vnet_hdr : 1;
-} TAPState;
-
-static int launch_script(const char *setup_script, const char *ifname, int fd);
-
-static int tap_can_send(void *opaque);
-static void tap_send(void *opaque);
-static void tap_writable(void *opaque);
-
-static void tap_update_fd_handler(TAPState *s)
-{
- qemu_set_fd_handler2(s->fd,
- s->read_poll ? tap_can_send : NULL,
- s->read_poll ? tap_send : NULL,
- s->write_poll ? tap_writable : NULL,
- s);
-}
-
-static void tap_read_poll(TAPState *s, int enable)
-{
- s->read_poll = !!enable;
- tap_update_fd_handler(s);
-}
-
-static void tap_write_poll(TAPState *s, int enable)
-{
- s->write_poll = !!enable;
- tap_update_fd_handler(s);
-}
-
-static void tap_writable(void *opaque)
-{
- TAPState *s = opaque;
-
- tap_write_poll(s, 0);
-
- qemu_flush_queued_packets(s->vc);
-}
-
-static ssize_t tap_write_packet(TAPState *s, const struct iovec *iov, int iovcnt)
-{
- ssize_t len;
-
- do {
- len = writev(s->fd, iov, iovcnt);
- } while (len == -1 && errno == EINTR);
-
- if (len == -1 && errno == EAGAIN) {
- tap_write_poll(s, 1);
- return 0;
- }
-
- return len;
-}
-
-static ssize_t tap_receive_iov(VLANClientState *vc, const struct iovec *iov,
- int iovcnt)
-{
- TAPState *s = vc->opaque;
- const struct iovec *iovp = iov;
- struct iovec iov_copy[iovcnt + 1];
- struct virtio_net_hdr hdr = { 0, };
-
- if (s->has_vnet_hdr && !s->using_vnet_hdr) {
- iov_copy[0].iov_base = &hdr;
- iov_copy[0].iov_len = sizeof(hdr);
- memcpy(&iov_copy[1], iov, iovcnt * sizeof(*iov));
- iovp = iov_copy;
- iovcnt++;
- }
-
- return tap_write_packet(s, iovp, iovcnt);
-}
-
-static ssize_t tap_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
-{
- TAPState *s = vc->opaque;
- struct iovec iov[2];
- int iovcnt = 0;
- struct virtio_net_hdr hdr = { 0, };
-
- if (s->has_vnet_hdr && !s->using_vnet_hdr) {
- iov[iovcnt].iov_base = &hdr;
- iov[iovcnt].iov_len = sizeof(hdr);
- iovcnt++;
- }
-
- iov[iovcnt].iov_base = (char *)buf;
- iov[iovcnt].iov_len = size;
- iovcnt++;
-
- return tap_write_packet(s, iov, iovcnt);
-}
-
-static int tap_can_send(void *opaque)
-{
- TAPState *s = opaque;
-
- return qemu_can_send_packet(s->vc);
-}
-
-#ifdef __sun__
-static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
-{
- struct strbuf sbuf;
- int f = 0;
-
- sbuf.maxlen = maxlen;
- sbuf.buf = (char *)buf;
-
- return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
-}
-#else
-static ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
-{
- return read(tapfd, buf, maxlen);
-}
-#endif
-
-static void tap_send_completed(VLANClientState *vc, ssize_t len)
-{
- TAPState *s = vc->opaque;
- tap_read_poll(s, 1);
-}
-
-static void tap_send(void *opaque)
-{
- TAPState *s = opaque;
- int size;
-
- do {
- uint8_t *buf = s->buf;
-
- size = tap_read_packet(s->fd, s->buf, sizeof(s->buf));
- if (size <= 0) {
- break;
- }
-
- if (s->has_vnet_hdr && !s->using_vnet_hdr) {
- buf += sizeof(struct virtio_net_hdr);
- size -= sizeof(struct virtio_net_hdr);
- }
-
- size = qemu_send_packet_async(s->vc, buf, size, tap_send_completed);
- if (size == 0) {
- tap_read_poll(s, 0);
- }
- } while (size > 0);
-}
-
-/* sndbuf should be set to a value lower than the tx queue
- * capacity of any destination network interface.
- * Ethernet NICs generally have txqueuelen=1000, so 1Mb is
- * a good default, given a 1500 byte MTU.
- */
-#define TAP_DEFAULT_SNDBUF 1024*1024
-
-static int tap_set_sndbuf(TAPState *s, QemuOpts *opts)
-{
- int sndbuf;
-
- sndbuf = qemu_opt_get_size(opts, "sndbuf", TAP_DEFAULT_SNDBUF);
- if (!sndbuf) {
- sndbuf = INT_MAX;
- }
-
- if (ioctl(s->fd, TUNSETSNDBUF, &sndbuf) == -1 && qemu_opt_get(opts, "sndbuf")) {
- qemu_error("TUNSETSNDBUF ioctl failed: %s\n", strerror(errno));
- return -1;
- }
- return 0;
-}
-
-int tap_has_vnet_hdr(VLANClientState *vc)
-{
- TAPState *s = vc->opaque;
-
- assert(vc->type == NET_CLIENT_TYPE_TAP);
-
- return s->has_vnet_hdr;
-}
-
-void tap_using_vnet_hdr(VLANClientState *vc, int using_vnet_hdr)
-{
- TAPState *s = vc->opaque;
-
- using_vnet_hdr = using_vnet_hdr != 0;
-
- assert(vc->type == NET_CLIENT_TYPE_TAP);
- assert(s->has_vnet_hdr == using_vnet_hdr);
-
- s->using_vnet_hdr = using_vnet_hdr;
-}
-
-static int tap_probe_vnet_hdr(int fd)
-{
- struct ifreq ifr;
-
- if (ioctl(fd, TUNGETIFF, &ifr) != 0) {
- qemu_error("TUNGETIFF ioctl() failed: %s\n", strerror(errno));
- return 0;
- }
-
- return ifr.ifr_flags & IFF_VNET_HDR;
-}
-
-static void tap_cleanup(VLANClientState *vc)
-{
- TAPState *s = vc->opaque;
-
- qemu_purge_queued_packets(vc);
-
- if (s->down_script[0])
- launch_script(s->down_script, s->down_script_arg, s->fd);
-
- tap_read_poll(s, 0);
- tap_write_poll(s, 0);
- close(s->fd);
- qemu_free(s);
-}
-
-/* fd support */
-
-static TAPState *net_tap_fd_init(VLANState *vlan,
- const char *model,
- const char *name,
- int fd,
- int vnet_hdr)
-{
- TAPState *s;
-
- s = qemu_mallocz(sizeof(TAPState));
- s->fd = fd;
- s->has_vnet_hdr = vnet_hdr != 0;
- s->using_vnet_hdr = 0;
- s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_TAP,
- vlan, NULL, model, name, NULL,
- tap_receive, tap_receive_iov,
- tap_cleanup, s);
- tap_read_poll(s, 1);
- return s;
-}
-
-#if defined (CONFIG_BSD) || defined (__FreeBSD_kernel__)
-static int tap_open(char *ifname, int ifname_size,
- int *vnet_hdr, int vnet_hdr_required)
-{
- 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).
- */
-static 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,
- int *vnet_hdr, int vnet_hdr_required)
-{
- 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,
- int *vnet_hdr, int vnet_hdr_required)
-{
- fprintf (stderr, "no tap on AIX\n");
- return -1;
-}
-#else
-static int tap_open(char *ifname, int ifname_size,
- int *vnet_hdr, int vnet_hdr_required)
-{
- 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 (*vnet_hdr) {
- unsigned int features;
-
- if (ioctl(fd, TUNGETFEATURES, &features) == 0 &&
- features & IFF_VNET_HDR) {
- *vnet_hdr = 1;
- ifr.ifr_flags |= IFF_VNET_HDR;
- }
-
- if (vnet_hdr_required && !*vnet_hdr) {
- qemu_error("vnet_hdr=1 requested, but no kernel "
- "support for IFF_VNET_HDR available");
- close(fd);
- return -1;
- }
- }
-
- 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)
-{
- sigset_t oldmask, mask;
- int pid, status;
- char *args[3];
- char **parg;
-
- sigemptyset(&mask);
- sigaddset(&mask, SIGCHLD);
- sigprocmask(SIG_BLOCK, &mask, &oldmask);
-
- /* try to launch network script */
- pid = fork();
- 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);
- } else if (pid > 0) {
- while (waitpid(pid, &status, 0) != pid) {
- /* loop */
- }
- sigprocmask(SIG_SETMASK, &oldmask, NULL);
-
- if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
- return 0;
- }
- }
- fprintf(stderr, "%s: could not launch network script\n", setup_script);
- return -1;
-}
-
-static int net_tap_init(QemuOpts *opts, int *vnet_hdr)
-{
- int fd, vnet_hdr_required;
- char ifname[128] = {0,};
- const char *setup_script;
-
- if (qemu_opt_get(opts, "ifname")) {
- pstrcpy(ifname, sizeof(ifname), qemu_opt_get(opts, "ifname"));
- }
-
- *vnet_hdr = qemu_opt_get_bool(opts, "vnet_hdr", 1);
- if (qemu_opt_get(opts, "vnet_hdr")) {
- vnet_hdr_required = *vnet_hdr;
- } else {
- vnet_hdr_required = 0;
- }
-
- TFR(fd = tap_open(ifname, sizeof(ifname), vnet_hdr, vnet_hdr_required));
- if (fd < 0) {
- return -1;
- }
-
- setup_script = qemu_opt_get(opts, "script");
- if (setup_script &&
- setup_script[0] != '\0' &&
- strcmp(setup_script, "no") != 0 &&
- launch_script(setup_script, ifname, fd)) {
- close(fd);
- return -1;
- }
-
- qemu_opt_set(opts, "ifname", ifname);
-
- return fd;
-}
-
-#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, (char *)buf, sizeof(buf), 0);
- if (size > 0) {
- qemu_send_packet(s->vc, buf, size);
- }
-}
-
-static ssize_t vde_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
-{
- VDEState *s = vc->opaque;
- ssize_t ret;
-
- do {
- ret = vde_send(s->vde, (const char *)buf, size, 0);
- } while (ret < 0 && errno == EINTR);
-
- return ret;
-}
-
-static void vde_cleanup(VLANClientState *vc)
-{
- VDEState *s = vc->opaque;
- qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
- vde_close(s->vde);
- qemu_free(s);
-}
-
-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 = (char *)group;
- char *init_sock = (char *)sock;
-
- struct vde_open_args args = {
- .port = port,
- .group = init_group,
- .mode = mode,
- };
-
- s = qemu_mallocz(sizeof(VDEState));
- s->vde = vde_open(init_sock, (char *)"QEMU", &args);
- if (!s->vde){
- free(s);
- return -1;
- }
- s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_VDE,
- vlan, NULL, model, name, NULL,
- vde_receive, NULL,
- vde_cleanup, 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 ssize_t net_socket_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
-{
- NetSocketState *s = vc->opaque;
- uint32_t len;
- len = htonl(size);
-
- send_all(s->fd, (const uint8_t *)&len, sizeof(len));
- return send_all(s->fd, buf, size);
-}
-
-static ssize_t net_socket_receive_dgram(VLANClientState *vc, const uint8_t *buf, size_t size)
-{
- NetSocketState *s = vc->opaque;
-
- return sendto(s->fd, (const void *)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, (void *)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, (void *)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 void net_socket_cleanup(VLANClientState *vc)
-{
- NetSocketState *s = vc->opaque;
- qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
- close(s->fd);
- qemu_free(s);
-}
-
-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(NET_CLIENT_TYPE_SOCKET,
- vlan, NULL, model, name, NULL,
- net_socket_receive_dgram, NULL,
- net_socket_cleanup, 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(NET_CLIENT_TYPE_SOCKET,
- vlan, NULL, model, name, NULL,
- net_socket_receive, NULL,
- net_socket_cleanup, 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 = qemu_strdup(model);
- s->name = name ? qemu_strdup(name) : NULL;
- 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;
-
-}
-
-typedef struct DumpState {
- VLANClientState *pcap_vc;
- int fd;
- int pcap_caplen;
-} DumpState;
-
-#define PCAP_MAGIC 0xa1b2c3d4
-
-struct pcap_file_hdr {
- uint32_t magic;
- uint16_t version_major;
- uint16_t version_minor;
- int32_t thiszone;
- uint32_t sigfigs;
- uint32_t snaplen;
- uint32_t linktype;
-};
-
-struct pcap_sf_pkthdr {
- struct {
- int32_t tv_sec;
- int32_t tv_usec;
- } ts;
- uint32_t caplen;
- uint32_t len;
-};
-
-static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
-{
- DumpState *s = vc->opaque;
- struct pcap_sf_pkthdr hdr;
- int64_t ts;
- int caplen;
-
- /* Early return in case of previous error. */
- if (s->fd < 0) {
- return size;
- }
-
- ts = muldiv64(qemu_get_clock(vm_clock), 1000000, get_ticks_per_sec());
- caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
-
- hdr.ts.tv_sec = ts / 1000000;
- hdr.ts.tv_usec = ts % 1000000;
- hdr.caplen = caplen;
- hdr.len = size;
- if (write(s->fd, &hdr, sizeof(hdr)) != sizeof(hdr) ||
- write(s->fd, buf, caplen) != caplen) {
- qemu_log("-net dump write error - stop dump\n");
- close(s->fd);
- s->fd = -1;
- }
-
- return size;
-}
-
-static void net_dump_cleanup(VLANClientState *vc)
-{
- DumpState *s = vc->opaque;
-
- close(s->fd);
- qemu_free(s);
-}
-
-static int net_dump_init(VLANState *vlan, const char *device,
- const char *name, const char *filename, int len)
-{
- struct pcap_file_hdr hdr;
- DumpState *s;
-
- s = qemu_malloc(sizeof(DumpState));
-
- s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
- if (s->fd < 0) {
- qemu_error("-net dump: can't open %s\n", filename);
- return -1;
- }
-
- s->pcap_caplen = len;
-
- hdr.magic = PCAP_MAGIC;
- hdr.version_major = 2;
- hdr.version_minor = 4;
- hdr.thiszone = 0;
- hdr.sigfigs = 0;
- hdr.snaplen = s->pcap_caplen;
- hdr.linktype = 1;
-
- if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
- qemu_error("-net dump write error: %s\n", strerror(errno));
- close(s->fd);
- qemu_free(s);
- return -1;
- }
-
- s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
- vlan, NULL, device, name, NULL,
- dump_receive, NULL,
- net_dump_cleanup, s);
- snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
- "dump to %s (len=%d)", filename, len);
- return 0;
-}
-
-/* find or alloc a new VLAN */
-VLANState *qemu_find_vlan(int id, int allocate)
-{
- VLANState *vlan;
-
- QTAILQ_FOREACH(vlan, &vlans, next) {
- if (vlan->id == id) {
- return vlan;
- }
- }
-
- if (!allocate) {
- return NULL;
- }
-
- vlan = qemu_mallocz(sizeof(VLANState));
- vlan->id = id;
- QTAILQ_INIT(&vlan->clients);
-
- vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
- qemu_vlan_deliver_packet_iov,
- vlan);
-
- QTAILQ_INSERT_TAIL(&vlans, vlan, next);
-
- return vlan;
-}
-
-VLANClientState *qemu_find_netdev(const char *id)
-{
- VLANClientState *vc;
-
- QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
- if (!strcmp(vc->name, id)) {
- return vc;
- }
- }
-
- return NULL;
-}
-
-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;
-}
-
-int qemu_show_nic_models(const char *arg, const char *const *models)
-{
- int i;
-
- if (!arg || strcmp(arg, "?"))
- return 0;
-
- fprintf(stderr, "qemu: Supported NIC models: ");
- for (i = 0 ; models[i]; i++)
- fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
- return 1;
-}
-
-void qemu_check_nic_model(NICInfo *nd, const char *model)
-{
- const char *models[2];
-
- models[0] = model;
- models[1] = NULL;
-
- if (qemu_show_nic_models(nd->model, models))
- exit(0);
- if (qemu_find_nic_model(nd, models, model) < 0)
- exit(1);
-}
-
-int qemu_find_nic_model(NICInfo *nd, const char * const *models,
- const char *default_model)
-{
- int i;
-
- if (!nd->model)
- nd->model = qemu_strdup(default_model);
-
- for (i = 0 ; models[i]; i++) {
- if (strcmp(nd->model, models[i]) == 0)
- return i;
- }
-
- qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
- return -1;
-}
-
-static int net_handle_fd_param(Monitor *mon, const char *param)
-{
- if (!qemu_isdigit(param[0])) {
- int fd;
-
- fd = monitor_get_fd(mon, param);
- if (fd == -1) {
- qemu_error("No file descriptor named %s found", param);
+ fd = strtol(param, &endptr, 10);
+ if (*endptr || (fd == 0 && param == endptr)) {
return -1;
- }
-
- return fd;
- } else {
- return strtol(param, NULL, 0);
+ }
}
+
+ return fd;
}
static int net_init_nic(QemuOpts *opts,
idx = nic_get_free_idx();
if (idx == -1 || nb_nics >= MAX_NICS) {
- qemu_error("Too Many NICs\n");
+ error_report("Too Many NICs");
return -1;
}
if ((netdev = qemu_opt_get(opts, "netdev"))) {
nd->netdev = qemu_find_netdev(netdev);
if (!nd->netdev) {
- qemu_error("netdev '%s' not found\n", netdev);
+ error_report("netdev '%s' not found", netdev);
return -1;
}
} else {
nd->macaddr[5] = 0x56 + idx;
if (qemu_opt_get(opts, "macaddr") &&
- parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
- qemu_error("invalid syntax for ethernet address\n");
+ net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
+ error_report("invalid syntax for ethernet address");
return -1;
}
- nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
- if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
+ nd->nvectors = qemu_opt_get_number(opts, "vectors",
+ DEV_NVECTORS_UNSPECIFIED);
+ if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
- qemu_error("invalid # of vectors: %d\n", nd->nvectors);
+ error_report("invalid # of vectors: %d", nd->nvectors);
return -1;
}
nd->used = 1;
- if (vlan) {
- nd->vlan->nb_guest_devs++;
- }
nb_nics++;
return idx;
}
-#if defined(CONFIG_SLIRP)
-static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
-{
- struct slirp_config_str *config;
-
- if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
- return 0;
- }
-
- config = qemu_mallocz(sizeof(*config));
-
- pstrcpy(config->str, sizeof(config->str), value);
-
- if (!strcmp(name, "hostfwd")) {
- config->flags = SLIRP_CFG_HOSTFWD;
- }
-
- config->next = slirp_configs;
- slirp_configs = config;
-
- return 0;
-}
-
-static int net_init_slirp(QemuOpts *opts,
- Monitor *mon,
- const char *name,
- VLANState *vlan)
-{
- struct slirp_config_str *config;
- const char *vhost;
- const char *vhostname;
- const char *vdhcp_start;
- const char *vnamesrv;
- const char *tftp_export;
- const char *bootfile;
- const char *smb_export;
- const char *vsmbsrv;
- char *vnet = NULL;
- int restricted = 0;
- int ret;
-
- vhost = qemu_opt_get(opts, "host");
- vhostname = qemu_opt_get(opts, "hostname");
- vdhcp_start = qemu_opt_get(opts, "dhcpstart");
- vnamesrv = qemu_opt_get(opts, "dns");
- tftp_export = qemu_opt_get(opts, "tftp");
- bootfile = qemu_opt_get(opts, "bootfile");
- smb_export = qemu_opt_get(opts, "smb");
- vsmbsrv = qemu_opt_get(opts, "smbserver");
-
- if (qemu_opt_get(opts, "ip")) {
- const char *ip = qemu_opt_get(opts, "ip");
- int l = strlen(ip) + strlen("/24") + 1;
-
- vnet = qemu_malloc(l);
-
- /* emulate legacy ip= parameter */
- pstrcpy(vnet, l, ip);
- pstrcat(vnet, l, "/24");
- }
-
- if (qemu_opt_get(opts, "net")) {
- if (vnet) {
- qemu_free(vnet);
- }
- vnet = qemu_strdup(qemu_opt_get(opts, "net"));
- }
-
- if (qemu_opt_get(opts, "restrict") &&
- qemu_opt_get(opts, "restrict")[0] == 'y') {
- restricted = 1;
- }
-
- qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
-
- ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
- vhostname, tftp_export, bootfile, vdhcp_start,
- vnamesrv, smb_export, vsmbsrv);
-
- while (slirp_configs) {
- config = slirp_configs;
- slirp_configs = config->next;
- qemu_free(config);
- }
-
- if (ret != -1 && vlan) {
- vlan->nb_host_devs++;
- }
-
- qemu_free(vnet);
-
- return ret;
-}
-#endif /* CONFIG_SLIRP */
-
-#ifdef _WIN32
-static int net_init_tap_win32(QemuOpts *opts,
- Monitor *mon,
- const char *name,
- VLANState *vlan)
-{
- const char *ifname;
-
- ifname = qemu_opt_get(opts, "ifname");
-
- if (!ifname) {
- qemu_error("tap: no interface name\n");
- return -1;
- }
-
- if (tap_win32_init(vlan, "tap", name, ifname) == -1) {
- return -1;
- }
-
- if (vlan) {
- vlan->nb_host_devs++;
- }
-
- return 0;
-}
-#elif !defined(_AIX)
-static int net_init_tap(QemuOpts *opts,
- Monitor *mon,
- const char *name,
- VLANState *vlan)
-{
- TAPState *s;
- int fd, vnet_hdr;
-
- if (qemu_opt_get(opts, "fd")) {
- if (qemu_opt_get(opts, "ifname") ||
- qemu_opt_get(opts, "script") ||
- qemu_opt_get(opts, "downscript") ||
- qemu_opt_get(opts, "vnet_hdr")) {
- qemu_error("ifname=, script=, downscript= and vnet_hdr= is invalid with fd=\n");
- return -1;
- }
-
- fd = net_handle_fd_param(mon, qemu_opt_get(opts, "fd"));
- if (fd == -1) {
- return -1;
- }
-
- fcntl(fd, F_SETFL, O_NONBLOCK);
-
- vnet_hdr = tap_probe_vnet_hdr(fd);
- } else {
- if (!qemu_opt_get(opts, "script")) {
- qemu_opt_set(opts, "script", DEFAULT_NETWORK_SCRIPT);
- }
-
- if (!qemu_opt_get(opts, "downscript")) {
- qemu_opt_set(opts, "downscript", DEFAULT_NETWORK_DOWN_SCRIPT);
- }
-
- fd = net_tap_init(opts, &vnet_hdr);
- }
-
- s = net_tap_fd_init(vlan, "tap", name, fd, vnet_hdr);
- if (!s) {
- close(fd);
- return -1;
- }
-
- if (tap_set_sndbuf(s, opts) < 0) {
- return -1;
- }
-
- if (qemu_opt_get(opts, "fd")) {
- snprintf(s->vc->info_str, sizeof(s->vc->info_str), "fd=%d", fd);
- } else {
- const char *ifname, *script, *downscript;
-
- ifname = qemu_opt_get(opts, "ifname");
- script = qemu_opt_get(opts, "script");
- downscript = qemu_opt_get(opts, "downscript");
-
- snprintf(s->vc->info_str, sizeof(s->vc->info_str),
- "ifname=%s,script=%s,downscript=%s",
- ifname, script, downscript);
-
- if (strcmp(downscript, "no") != 0) {
- snprintf(s->down_script, sizeof(s->down_script), "%s", downscript);
- snprintf(s->down_script_arg, sizeof(s->down_script_arg), "%s", ifname);
- }
- }
-
- if (vlan) {
- vlan->nb_host_devs++;
- }
-
- return 0;
-}
-#endif
-
-static 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_error("listen=, connect= and mcast= is invalid with fd=\n");
- 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)) {
- close(fd);
- 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_error("fd=, connect= and mcast= is invalid with listen=\n");
- 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_error("fd=, listen= and mcast= is invalid with connect=\n");
- 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;
-
- if (qemu_opt_get(opts, "fd") ||
- qemu_opt_get(opts, "connect") ||
- qemu_opt_get(opts, "listen")) {
- qemu_error("fd=, connect= and listen= is invalid with mcast=\n");
- return -1;
- }
-
- mcast = qemu_opt_get(opts, "mcast");
-
- if (net_socket_mcast_init(vlan, "socket", name, mcast) == -1) {
- return -1;
- }
- } else {
- qemu_error("-socket requires fd=, listen=, connect= or mcast=\n");
- return -1;
- }
-
- if (vlan) {
- vlan->nb_host_devs++;
- }
-
- return 0;
-}
-
-#ifdef CONFIG_VDE
-static int net_init_vde(QemuOpts *opts,
- Monitor *mon,
- const char *name,
- VLANState *vlan)
-{
- const char *sock;
- const char *group;
- int port, mode;
-
- sock = qemu_opt_get(opts, "sock");
- group = qemu_opt_get(opts, "group");
-
- port = qemu_opt_get_number(opts, "port", 0);
- mode = qemu_opt_get_number(opts, "mode", 0700);
-
- if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) {
- return -1;
- }
-
- if (vlan) {
- vlan->nb_host_devs++;
- }
-
- return 0;
-}
-#endif
-
-static int net_init_dump(QemuOpts *opts,
- Monitor *mon,
- const char *name,
- VLANState *vlan)
-{
- int len;
- const char *file;
- char def_file[128];
-
- assert(vlan);
-
- file = qemu_opt_get(opts, "file");
- if (!file) {
- snprintf(def_file, sizeof(def_file), "qemu-vlan%d.pcap", vlan->id);
- file = def_file;
- }
-
- len = qemu_opt_get_size(opts, "len", 65536);
-
- return net_dump_init(vlan, "dump", name, file, len);
-}
-
#define NET_COMMON_PARAMS_DESC \
{ \
.name = "type", \
/* magic number, but compiler will warn if too small */
#define NET_MAX_DESC 20
-static struct {
+static const struct {
const char *type;
net_client_init_func init;
QemuOptDesc desc[NET_MAX_DESC];
{ /* end of list */ }
},
#endif
-#ifdef _WIN32
}, {
.type = "tap",
- .init = net_init_tap_win32,
+ .init = net_init_tap,
.desc = {
NET_COMMON_PARAMS_DESC,
{
.type = QEMU_OPT_STRING,
.help = "interface name",
},
- { /* end of list */ }
- },
-#elif !defined(_AIX)
- }, {
- .type = "tap",
- .init = net_init_tap,
- .desc = {
- NET_COMMON_PARAMS_DESC,
+#ifndef _WIN32
{
.name = "fd",
.type = QEMU_OPT_STRING,
.help = "file descriptor of an already opened tap",
- }, {
- .name = "ifname",
- .type = QEMU_OPT_STRING,
- .help = "interface name",
}, {
.name = "script",
.type = QEMU_OPT_STRING,
.name = "vnet_hdr",
.type = QEMU_OPT_BOOL,
.help = "enable the IFF_VNET_HDR flag on the tap interface"
- },
+ }, {
+ .name = "vhost",
+ .type = QEMU_OPT_BOOL,
+ .help = "enable vhost-net network accelerator",
+ }, {
+ .name = "vhostfd",
+ .type = QEMU_OPT_STRING,
+ .help = "file descriptor of an already opened vhost net device",
+ }, {
+ .name = "vhostforce",
+ .type = QEMU_OPT_BOOL,
+ .help = "force vhost on for non-MSIX virtio guests",
+ },
+#endif /* _WIN32 */
{ /* end of list */ }
},
-#endif
}, {
.type = "socket",
.init = net_init_socket,
.name = "mcast",
.type = QEMU_OPT_STRING,
.help = "UDP multicast address and port number",
+ }, {
+ .name = "localaddr",
+ .type = QEMU_OPT_STRING,
+ .help = "source address for multicast packets",
},
{ /* end of list */ }
},
type = qemu_opt_get(opts, "type");
if (!type) {
- qemu_error("No type specified for -net\n");
+ qerror_report(QERR_MISSING_PARAMETER, "type");
return -1;
}
strcmp(type, "vde") != 0 &&
#endif
strcmp(type, "socket") != 0) {
- qemu_error("The '%s' network backend type is not valid with -netdev\n",
- type);
+ qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
+ "a netdev backend type");
return -1;
}
if (qemu_opt_get(opts, "vlan")) {
- qemu_error("The 'vlan' parameter is not valid with -netdev\n");
+ qerror_report(QERR_INVALID_PARAMETER, "vlan");
return -1;
}
if (qemu_opt_get(opts, "name")) {
- qemu_error("The 'name' parameter is not valid with -netdev\n");
+ qerror_report(QERR_INVALID_PARAMETER, "name");
return -1;
}
if (!qemu_opts_id(opts)) {
- qemu_error("The id= parameter is required with -netdev\n");
+ qerror_report(QERR_MISSING_PARAMETER, "id");
return -1;
}
}
for (i = 0; net_client_types[i].type != NULL; i++) {
if (!strcmp(net_client_types[i].type, type)) {
VLANState *vlan = NULL;
+ int ret;
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
return -1;
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
}
+ ret = 0;
if (net_client_types[i].init) {
- return net_client_types[i].init(opts, mon, name, vlan);
- } else {
- return 0;
+ ret = net_client_types[i].init(opts, mon, name, vlan);
+ if (ret < 0) {
+ /* TODO push error reporting into init() methods */
+ qerror_report(QERR_DEVICE_INIT_FAILED, type);
+ return -1;
+ }
}
+ return ret;
}
}
- qemu_error("Invalid -net type '%s'\n", type);
+ qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
+ "a network client type");
return -1;
}
-void net_client_uninit(NICInfo *nd)
-{
- if (nd->vlan) {
- nd->vlan->nb_guest_devs--;
- }
- nb_nics--;
-
- qemu_free(nd->model);
- qemu_free(nd->name);
- qemu_free(nd->devaddr);
-
- nd->used = 0;
-}
-
static int net_host_check_device(const char *device)
{
int i;
return;
}
- opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
+ opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
if (!opts) {
- monitor_printf(mon, "parsing network options '%s' failed\n",
- opts_str ? opts_str : "");
return;
}
qemu_del_vlan_client(vc);
}
-void net_set_boot_mask(int net_boot_mask)
+int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
- int i;
+ QemuOpts *opts;
+ int res;
- /* Only the first four NICs may be bootable */
- net_boot_mask = net_boot_mask & 0xF;
+ opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
+ if (!opts) {
+ return -1;
+ }
- for (i = 0; i < nb_nics; i++) {
- if (net_boot_mask & (1 << i)) {
- nd_table[i].bootable = 1;
- net_boot_mask &= ~(1 << i);
- }
+ res = net_client_init(mon, opts, 1);
+ if (res < 0) {
+ qemu_opts_del(opts);
}
- if (net_boot_mask) {
- fprintf(stderr, "Cannot boot from non-existent NIC\n");
- exit(1);
+ return res;
+}
+
+int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+ const char *id = qdict_get_str(qdict, "id");
+ VLANClientState *vc;
+
+ vc = qemu_find_netdev(id);
+ if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) {
+ qerror_report(QERR_DEVICE_NOT_FOUND, id);
+ return -1;
}
+ qemu_del_vlan_client(vc);
+ qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
+ return 0;
}
void do_info_network(Monitor *mon)
{
VLANState *vlan;
+ VLANClientState *vc;
QTAILQ_FOREACH(vlan, &vlans, next) {
- VLANClientState *vc;
-
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
QTAILQ_FOREACH(vc, &vlan->clients, next) {
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
}
}
+ monitor_printf(mon, "Devices not on any VLAN:\n");
+ QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
+ monitor_printf(mon, " %s: %s", vc->name, vc->info_str);
+ if (vc->peer) {
+ monitor_printf(mon, " peer=%s", vc->peer->name);
+ }
+ monitor_printf(mon, "\n");
+ }
}
-void do_set_link(Monitor *mon, const QDict *qdict)
+int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
VLANState *vlan;
VLANClientState *vc = NULL;
const char *name = qdict_get_str(qdict, "name");
- const char *up_or_down = qdict_get_str(qdict, "up_or_down");
+ int up = qdict_get_bool(qdict, "up");
QTAILQ_FOREACH(vlan, &vlans, next) {
QTAILQ_FOREACH(vc, &vlan->clients, next) {
}
}
}
+ vc = qemu_find_netdev(name);
done:
if (!vc) {
- monitor_printf(mon, "could not find network device '%s'\n", name);
- return;
+ qerror_report(QERR_DEVICE_NOT_FOUND, name);
+ return -1;
}
- 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);
+ vc->link_down = !up;
+
+ if (vc->info->link_status_changed) {
+ vc->info->link_status_changed(vc);
+ }
- if (vc->link_status_changed)
- vc->link_status_changed(vc);
+ /* Notify peer. Don't update peer link status: this makes it possible to
+ * disconnect from host network without notifying the guest.
+ * FIXME: is disconnected link status change operation useful?
+ *
+ * Current behaviour is compatible with qemu vlans where there could be
+ * multiple clients that can still communicate with each other in
+ * disconnected mode. For now maintain this compatibility. */
+ if (vc->peer && vc->peer->info->link_status_changed) {
+ vc->peer->info->link_status_changed(vc->peer);
+ }
+ return 0;
}
void net_cleanup(void)
}
}
-static void net_check_clients(void)
+void net_check_clients(void)
{
VLANState *vlan;
+ VLANClientState *vc;
+ int i;
+
+ /* Don't warn about the default network setup that you get if
+ * no command line -net or -netdev options are specified. There
+ * are two cases that we would otherwise complain about:
+ * (1) board doesn't support a NIC but the implicit "-net nic"
+ * requested one
+ * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
+ * sets up a nic that isn't connected to anything.
+ */
+ if (default_net) {
+ return;
+ }
QTAILQ_FOREACH(vlan, &vlans, next) {
- if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0)
- continue;
- if (vlan->nb_guest_devs == 0)
+ int has_nic = 0, has_host_dev = 0;
+
+ QTAILQ_FOREACH(vc, &vlan->clients, next) {
+ switch (vc->info->type) {
+ case NET_CLIENT_TYPE_NIC:
+ has_nic = 1;
+ break;
+ case NET_CLIENT_TYPE_SLIRP:
+ case NET_CLIENT_TYPE_TAP:
+ case NET_CLIENT_TYPE_SOCKET:
+ case NET_CLIENT_TYPE_VDE:
+ has_host_dev = 1;
+ break;
+ default: ;
+ }
+ }
+ if (has_host_dev && !has_nic)
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
- if (vlan->nb_host_devs == 0)
+ if (has_nic && !has_host_dev)
fprintf(stderr,
"Warning: vlan %d is not connected to host network\n",
vlan->id);
}
+ QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
+ if (!vc->peer) {
+ fprintf(stderr, "Warning: %s %s has no peer\n",
+ vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
+ vc->name);
+ }
+ }
+
+ /* Check that all NICs requested via -net nic actually got created.
+ * NICs created via -device don't need to be checked here because
+ * they are always instantiated.
+ */
+ for (i = 0; i < MAX_NICS; i++) {
+ NICInfo *nd = &nd_table[i];
+ if (nd->used && !nd->instantiated) {
+ fprintf(stderr, "Warning: requested NIC (%s, model %s) "
+ "was not created (not supported by this machine?)\n",
+ nd->name ? nd->name : "anonymous",
+ nd->model ? nd->model : "unspecified");
+ }
+ }
}
static int net_init_client(QemuOpts *opts, void *dummy)
int net_init_clients(void)
{
- if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
+ QemuOptsList *net = qemu_find_opts("net");
+
+ if (default_net) {
/* if no clients, we use a default config */
- qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
+ qemu_opts_set(net, NULL, "type", "nic");
#ifdef CONFIG_SLIRP
- qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
+ qemu_opts_set(net, NULL, "type", "user");
#endif
}
QTAILQ_INIT(&vlans);
QTAILQ_INIT(&non_vlan_clients);
- if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
+ if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
return -1;
- if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
+ if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
return -1;
}
- net_check_clients();
-
return 0;
}
int net_client_parse(QemuOptsList *opts_list, const char *optarg)
{
#if defined(CONFIG_SLIRP)
- /* handle legacy -net channel,port:chr */
- if (!strcmp(opts_list->name, "net") &&
- !strncmp(optarg, "channel,", strlen("channel,"))) {
- int ret;
-
- optarg += strlen("channel,");
-
- if (QTAILQ_EMPTY(&slirp_stacks)) {
- struct slirp_config_str *config;
-
- config = qemu_malloc(sizeof(*config));
- pstrcpy(config->str, sizeof(config->str), optarg);
- config->flags = SLIRP_CFG_LEGACY;
- config->next = slirp_configs;
- slirp_configs = config;
- ret = 0;
- } else {
- ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
- }
-
+ int ret;
+ if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
return ret;
}
#endif
- if (!qemu_opts_parse(opts_list, optarg, "type")) {
+
+ if (!qemu_opts_parse(opts_list, optarg, 1)) {
return -1;
}
+ default_net = 0;
return 0;
}
projects / qemu.git / blobdiff