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Diffstat (limited to 'net/net.c')
-rw-r--r--net/net.c268
1 files changed, 177 insertions, 91 deletions
diff --git a/net/net.c b/net/net.c
index 71f9367a5b..660e904742 100644
--- a/net/net.c
+++ b/net/net.c
@@ -76,8 +76,6 @@ const char *host_net_devices[] = {
NULL,
};
-int default_net = 1;
-
/***********************************************************/
/* network device redirectors */
@@ -291,7 +289,7 @@ NICState *qemu_new_nic(NetClientInfo *info,
NICState *nic;
int i, queues = MAX(1, conf->peers.queues);
- assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
+ assert(info->type == NET_CLIENT_DRIVER_NIC);
assert(info->size >= sizeof(NICState));
nic = g_malloc0(info->size + sizeof(NetClientState) * queues);
@@ -362,13 +360,13 @@ void qemu_del_net_client(NetClientState *nc)
int queues, i;
NetFilterState *nf, *next;
- assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC);
+ assert(nc->info->type != NET_CLIENT_DRIVER_NIC);
/* If the NetClientState belongs to a multiqueue backend, we will change all
* other NetClientStates also.
*/
queues = qemu_find_net_clients_except(nc->name, ncs,
- NET_CLIENT_OPTIONS_KIND_NIC,
+ NET_CLIENT_DRIVER_NIC,
MAX_QUEUE_NUM);
assert(queues != 0);
@@ -377,7 +375,7 @@ void qemu_del_net_client(NetClientState *nc)
}
/* If there is a peer NIC, delete and cleanup client, but do not free. */
- if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) {
NICState *nic = qemu_get_nic(nc->peer);
if (nic->peer_deleted) {
return;
@@ -433,7 +431,7 @@ void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
NetClientState *nc;
QTAILQ_FOREACH(nc, &net_clients, next) {
- if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (nc->info->type == NET_CLIENT_DRIVER_NIC) {
if (nc->queue_index == 0) {
func(qemu_get_nic(nc), opaque);
}
@@ -605,7 +603,7 @@ void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge)
{
nc->receive_disabled = 0;
- if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
+ if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) {
if (net_hub_flush(nc->peer)) {
qemu_notify_event();
}
@@ -724,7 +722,7 @@ ssize_t qemu_deliver_packet_iov(NetClientState *sender,
return 0;
}
- if (nc->info->receive_iov) {
+ if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) {
ret = nc->info->receive_iov(nc, iov, iovcnt);
} else {
ret = nc_sendv_compat(nc, iov, iovcnt, flags);
@@ -779,7 +777,7 @@ NetClientState *qemu_find_netdev(const char *id)
NetClientState *nc;
QTAILQ_FOREACH(nc, &net_clients, next) {
- if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
+ if (nc->info->type == NET_CLIENT_DRIVER_NIC)
continue;
if (!strcmp(nc->name, id)) {
return nc;
@@ -790,7 +788,7 @@ NetClientState *qemu_find_netdev(const char *id)
}
int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
- NetClientOptionsKind type, int max)
+ NetClientDriver type, int max)
{
NetClientState *nc;
int ret = 0;
@@ -864,15 +862,15 @@ int qemu_find_nic_model(NICInfo *nd, const char * const *models,
return -1;
}
-static int net_init_nic(const NetClientOptions *opts, const char *name,
+static int net_init_nic(const Netdev *netdev, const char *name,
NetClientState *peer, Error **errp)
{
int idx;
NICInfo *nd;
const NetLegacyNicOptions *nic;
- assert(opts->type == NET_CLIENT_OPTIONS_KIND_NIC);
- nic = opts->u.nic.data;
+ assert(netdev->type == NET_CLIENT_DRIVER_NIC);
+ nic = &netdev->u.nic;
idx = nic_get_free_idx();
if (idx == -1 || nb_nics >= MAX_NICS) {
@@ -932,70 +930,111 @@ static int net_init_nic(const NetClientOptions *opts, const char *name,
}
-static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND__MAX])(
- const NetClientOptions *opts,
+static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])(
+ const Netdev *netdev,
const char *name,
NetClientState *peer, Error **errp) = {
- [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic,
+ [NET_CLIENT_DRIVER_NIC] = net_init_nic,
#ifdef CONFIG_SLIRP
- [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp,
+ [NET_CLIENT_DRIVER_USER] = net_init_slirp,
#endif
- [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap,
- [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
+ [NET_CLIENT_DRIVER_TAP] = net_init_tap,
+ [NET_CLIENT_DRIVER_SOCKET] = net_init_socket,
#ifdef CONFIG_VDE
- [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
+ [NET_CLIENT_DRIVER_VDE] = net_init_vde,
#endif
#ifdef CONFIG_NETMAP
- [NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap,
+ [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap,
#endif
- [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
+ [NET_CLIENT_DRIVER_DUMP] = net_init_dump,
#ifdef CONFIG_NET_BRIDGE
- [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge,
+ [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge,
#endif
- [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport,
+ [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport,
#ifdef CONFIG_VHOST_NET_USED
- [NET_CLIENT_OPTIONS_KIND_VHOST_USER] = net_init_vhost_user,
+ [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user,
#endif
#ifdef CONFIG_L2TPV3
- [NET_CLIENT_OPTIONS_KIND_L2TPV3] = net_init_l2tpv3,
+ [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3,
#endif
};
-static int net_client_init1(const void *object, int is_netdev, Error **errp)
+static int net_client_init1(const void *object, bool is_netdev, Error **errp)
{
- const NetClientOptions *opts;
+ Netdev legacy = {0};
+ const Netdev *netdev;
const char *name;
NetClientState *peer = NULL;
if (is_netdev) {
- const Netdev *netdev = object;
- opts = netdev->opts;
+ netdev = object;
name = netdev->id;
- if (opts->type == NET_CLIENT_OPTIONS_KIND_DUMP ||
- opts->type == NET_CLIENT_OPTIONS_KIND_NIC ||
- !net_client_init_fun[opts->type]) {
+ if (netdev->type == NET_CLIENT_DRIVER_DUMP ||
+ netdev->type == NET_CLIENT_DRIVER_NIC ||
+ !net_client_init_fun[netdev->type]) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
"a netdev backend type");
return -1;
}
} else {
const NetLegacy *net = object;
- opts = net->opts;
+ const NetLegacyOptions *opts = net->opts;
+ legacy.id = net->id;
+ netdev = &legacy;
/* missing optional values have been initialized to "all bits zero" */
name = net->has_id ? net->id : net->name;
- if (opts->type == NET_CLIENT_OPTIONS_KIND_NONE) {
+ /* Map the old options to the new flat type */
+ switch (opts->type) {
+ case NET_LEGACY_OPTIONS_KIND_NONE:
return 0; /* nothing to do */
- }
- if (opts->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
- error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
- "a net type");
- return -1;
+ case NET_LEGACY_OPTIONS_KIND_NIC:
+ legacy.type = NET_CLIENT_DRIVER_NIC;
+ legacy.u.nic = *opts->u.nic.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_USER:
+ legacy.type = NET_CLIENT_DRIVER_USER;
+ legacy.u.user = *opts->u.user.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_TAP:
+ legacy.type = NET_CLIENT_DRIVER_TAP;
+ legacy.u.tap = *opts->u.tap.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_L2TPV3:
+ legacy.type = NET_CLIENT_DRIVER_L2TPV3;
+ legacy.u.l2tpv3 = *opts->u.l2tpv3.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_SOCKET:
+ legacy.type = NET_CLIENT_DRIVER_SOCKET;
+ legacy.u.socket = *opts->u.socket.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_VDE:
+ legacy.type = NET_CLIENT_DRIVER_VDE;
+ legacy.u.vde = *opts->u.vde.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_DUMP:
+ legacy.type = NET_CLIENT_DRIVER_DUMP;
+ legacy.u.dump = *opts->u.dump.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_BRIDGE:
+ legacy.type = NET_CLIENT_DRIVER_BRIDGE;
+ legacy.u.bridge = *opts->u.bridge.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_NETMAP:
+ legacy.type = NET_CLIENT_DRIVER_NETMAP;
+ legacy.u.netmap = *opts->u.netmap.data;
+ break;
+ case NET_LEGACY_OPTIONS_KIND_VHOST_USER:
+ legacy.type = NET_CLIENT_DRIVER_VHOST_USER;
+ legacy.u.vhost_user = *opts->u.vhost_user.data;
+ break;
+ default:
+ abort();
}
- if (!net_client_init_fun[opts->type]) {
+ if (!net_client_init_fun[netdev->type]) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
"a net backend type (maybe it is not compiled "
"into this binary)");
@@ -1003,17 +1042,17 @@ static int net_client_init1(const void *object, int is_netdev, Error **errp)
}
/* Do not add to a vlan if it's a nic with a netdev= parameter. */
- if (opts->type != NET_CLIENT_OPTIONS_KIND_NIC ||
+ if (netdev->type != NET_CLIENT_DRIVER_NIC ||
!opts->u.nic.data->has_netdev) {
peer = net_hub_add_port(net->has_vlan ? net->vlan : 0, NULL);
}
}
- if (net_client_init_fun[opts->type](opts, name, peer, errp) < 0) {
+ if (net_client_init_fun[netdev->type](netdev, name, peer, errp) < 0) {
/* FIXME drop when all init functions store an Error */
if (errp && !*errp) {
error_setg(errp, QERR_DEVICE_INIT_FAILED,
- NetClientOptionsKind_lookup[opts->type]);
+ NetClientDriver_lookup[netdev->type]);
}
return -1;
}
@@ -1021,13 +1060,12 @@ static int net_client_init1(const void *object, int is_netdev, Error **errp)
}
-int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
+int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp)
{
void *object = NULL;
Error *err = NULL;
int ret = -1;
- OptsVisitor *ov = opts_visitor_new(opts);
- Visitor *v = opts_get_visitor(ov);
+ Visitor *v = opts_visitor_new(opts);
{
/* Parse convenience option format ip6-net=fec0::0[/64] */
@@ -1077,7 +1115,7 @@ int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
}
error_propagate(errp, err);
- opts_visitor_cleanup(ov);
+ visit_free(v);
return ret;
}
@@ -1115,7 +1153,7 @@ void hmp_host_net_add(Monitor *mon, const QDict *qdict)
qemu_opt_set(opts, "type", device, &error_abort);
- net_client_init(opts, 0, &local_err);
+ net_client_init(opts, false, &local_err);
if (local_err) {
error_report_err(local_err);
monitor_printf(mon, "adding host network device %s failed\n", device);
@@ -1134,7 +1172,7 @@ void hmp_host_net_remove(Monitor *mon, const QDict *qdict)
device, vlan_id);
return;
}
- if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (nc->info->type == NET_CLIENT_DRIVER_NIC) {
error_report("invalid host network device '%s'", device);
return;
}
@@ -1145,7 +1183,7 @@ void hmp_host_net_remove(Monitor *mon, const QDict *qdict)
void netdev_add(QemuOpts *opts, Error **errp)
{
- net_client_init(opts, 1, errp);
+ net_client_init(opts, true, errp);
}
void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp)
@@ -1201,7 +1239,7 @@ static void netfilter_print_info(Monitor *mon, NetFilterState *nf)
char *str;
ObjectProperty *prop;
ObjectPropertyIterator iter;
- StringOutputVisitor *ov;
+ Visitor *v;
/* generate info str */
object_property_iter_init(&iter, OBJECT(nf));
@@ -1209,11 +1247,10 @@ static void netfilter_print_info(Monitor *mon, NetFilterState *nf)
if (!strcmp(prop->name, "type")) {
continue;
}
- ov = string_output_visitor_new(false);
- object_property_get(OBJECT(nf), string_output_get_visitor(ov),
- prop->name, NULL);
- str = string_output_get_string(ov);
- string_output_visitor_cleanup(ov);
+ v = string_output_visitor_new(false, &str);
+ object_property_get(OBJECT(nf), v, prop->name, NULL);
+ visit_complete(v, &str);
+ visit_free(v);
monitor_printf(mon, ",%s=%s", prop->name, str);
g_free(str);
}
@@ -1226,7 +1263,7 @@ void print_net_client(Monitor *mon, NetClientState *nc)
monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name,
nc->queue_index,
- NetClientOptionsKind_lookup[nc->info->type],
+ NetClientDriver_lookup[nc->info->type],
nc->info_str);
if (!QTAILQ_EMPTY(&nc->filters)) {
monitor_printf(mon, "filters:\n");
@@ -1256,7 +1293,7 @@ RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
}
/* only query rx-filter information of NIC */
- if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (nc->info->type != NET_CLIENT_DRIVER_NIC) {
if (has_name) {
error_setg(errp, "net client(%s) isn't a NIC", name);
return NULL;
@@ -1302,7 +1339,7 @@ RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
void hmp_info_network(Monitor *mon, const QDict *qdict)
{
NetClientState *nc, *peer;
- NetClientOptionsKind type;
+ NetClientDriver type;
net_hub_info(mon);
@@ -1315,10 +1352,10 @@ void hmp_info_network(Monitor *mon, const QDict *qdict)
continue;
}
- if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (!peer || type == NET_CLIENT_DRIVER_NIC) {
print_net_client(mon, nc);
} /* else it's a netdev connected to a NIC, printed with the NIC */
- if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (peer && type == NET_CLIENT_DRIVER_NIC) {
monitor_printf(mon, " \\ ");
print_net_client(mon, peer);
}
@@ -1332,7 +1369,7 @@ void qmp_set_link(const char *name, bool up, Error **errp)
int queues, i;
queues = qemu_find_net_clients_except(name, ncs,
- NET_CLIENT_OPTIONS_KIND__MAX,
+ NET_CLIENT_DRIVER__MAX,
MAX_QUEUE_NUM);
if (queues == 0) {
@@ -1359,7 +1396,7 @@ void qmp_set_link(const char *name, bool up, Error **errp)
* multiple clients that can still communicate with each other in
* disconnected mode. For now maintain this compatibility.
*/
- if (nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) {
for (i = 0; i < queues; i++) {
ncs[i]->peer->link_down = !up;
}
@@ -1400,7 +1437,7 @@ LinkInfo *qmp_get_link(const char *name, Error **errp)
info = g_malloc0(sizeof (struct LinkInfo));
queues = qemu_find_net_clients_except(name, ncs,
- NET_CLIENT_OPTIONS_KIND__MAX,
+ NET_CLIENT_DRIVER__MAX,
MAX_QUEUE_NUM);
if (queues == 0) {
@@ -1425,7 +1462,7 @@ void net_cleanup(void)
*/
while (!QTAILQ_EMPTY(&net_clients)) {
nc = QTAILQ_FIRST(&net_clients);
- if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
+ if (nc->info->type == NET_CLIENT_DRIVER_NIC) {
qemu_del_nic(qemu_get_nic(nc));
} else {
qemu_del_net_client(nc);
@@ -1440,24 +1477,12 @@ void net_check_clients(void)
NetClientState *nc;
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;
- }
-
net_hub_check_clients();
QTAILQ_FOREACH(nc, &net_clients, next) {
if (!nc->peer) {
fprintf(stderr, "Warning: %s %s has no peer\n",
- nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
+ nc->info->type == NET_CLIENT_DRIVER_NIC ?
"nic" : "netdev", nc->name);
}
}
@@ -1481,7 +1506,7 @@ static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
{
Error *local_err = NULL;
- net_client_init(opts, 0, &local_err);
+ net_client_init(opts, false, &local_err);
if (local_err) {
error_report_err(local_err);
return -1;
@@ -1495,7 +1520,7 @@ static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp)
Error *local_err = NULL;
int ret;
- ret = net_client_init(opts, 1, &local_err);
+ ret = net_client_init(opts, true, &local_err);
if (local_err) {
error_report_err(local_err);
return -1;
@@ -1508,14 +1533,6 @@ int net_init_clients(void)
{
QemuOptsList *net = qemu_find_opts("net");
- if (default_net) {
- /* if no clients, we use a default config */
- qemu_opts_set(net, NULL, "type", "nic", &error_abort);
-#ifdef CONFIG_SLIRP
- qemu_opts_set(net, NULL, "type", "user", &error_abort);
-#endif
- }
-
net_change_state_entry =
qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL);
@@ -1546,7 +1563,6 @@ int net_client_parse(QemuOptsList *opts_list, const char *optarg)
return -1;
}
- default_net = 0;
return 0;
}
@@ -1598,3 +1614,73 @@ QemuOptsList qemu_net_opts = {
{ /* end of list */ }
},
};
+
+void net_socket_rs_init(SocketReadState *rs,
+ SocketReadStateFinalize *finalize)
+{
+ rs->state = 0;
+ rs->index = 0;
+ rs->packet_len = 0;
+ memset(rs->buf, 0, sizeof(rs->buf));
+ rs->finalize = finalize;
+}
+
+/*
+ * Returns
+ * 0: success
+ * -1: error occurs
+ */
+int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size)
+{
+ unsigned int l;
+
+ while (size > 0) {
+ /* reassemble a packet from the network */
+ switch (rs->state) { /* 0 = getting length, 1 = getting data */
+ case 0:
+ l = 4 - rs->index;
+ if (l > size) {
+ l = size;
+ }
+ memcpy(rs->buf + rs->index, buf, l);
+ buf += l;
+ size -= l;
+ rs->index += l;
+ if (rs->index == 4) {
+ /* got length */
+ rs->packet_len = ntohl(*(uint32_t *)rs->buf);
+ rs->index = 0;
+ rs->state = 1;
+ }
+ break;
+ case 1:
+ l = rs->packet_len - rs->index;
+ if (l > size) {
+ l = size;
+ }
+ if (rs->index + l <= sizeof(rs->buf)) {
+ memcpy(rs->buf + rs->index, buf, l);
+ } else {
+ fprintf(stderr, "serious error: oversized packet received,"
+ "connection terminated.\n");
+ rs->index = rs->state = 0;
+ return -1;
+ }
+
+ rs->index += l;
+ buf += l;
+ size -= l;
+ if (rs->index >= rs->packet_len) {
+ rs->index = 0;
+ rs->state = 0;
+ if (rs->finalize) {
+ rs->finalize(rs);
+ }
+ }
+ break;
+ }
+ }
+
+ assert(size == 0);
+ return 0;
+}
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