static int vhost_user_start(int queues, NetClientState *ncs[], CharBackend *be)
{
VhostNetOptions options;
struct vhost_net *net = NULL;
NetVhostUserState *s;
int max_queues;
int i;
options.backend_type = VHOST_BACKEND_TYPE_USER;
for (i = 0; i < queues; i++) {
assert(ncs[i]->info->type == NET_CLIENT_DRIVER_VHOST_USER);
s = DO_UPCAST(NetVhostUserState, nc, ncs[i]);
options.net_backend = ncs[i];
options.opaque = be;
options.busyloop_timeout = 0;
net = vhost_net_init(&options);
if (!net) {
error_report("failed to init vhost_net for queue %d", i);
goto err;
}
if (i == 0) {
max_queues = vhost_net_get_max_queues(net);
if (queues > max_queues) {
error_report("you are asking more queues than supported: %d",
max_queues);
goto err;
}
}
if (s->vhost_net) {
vhost_net_cleanup(s->vhost_net);
g_free(s->vhost_net);
}
s->vhost_net = net;
}
return 0;
err:
if (net) {
vhost_net_cleanup(net);
g_free(net);
}
vhost_user_stop(i, ncs);
return -1;
}
static int vhost_user_start(int queues, NetClientState *ncs[])
{
VhostNetOptions options;
VhostUserState *s;
int max_queues;
int i;
options.backend_type = VHOST_BACKEND_TYPE_USER;
for (i = 0; i < queues; i++) {
assert (ncs[i]->info->type == NET_CLIENT_OPTIONS_KIND_VHOST_USER);
s = DO_UPCAST(VhostUserState, nc, ncs[i]);
if (vhost_user_running(s)) {
continue;
}
options.net_backend = ncs[i];
options.opaque = s->chr;
s->vhost_net = vhost_net_init(&options);
if (!s->vhost_net) {
error_report("failed to init vhost_net for queue %d\n", i);
goto err;
}
if (i == 0) {
max_queues = vhost_net_get_max_queues(s->vhost_net);
if (queues > max_queues) {
error_report("you are asking more queues than "
"supported: %d\n", max_queues);
goto err;
}
}
}
return 0;
err:
vhost_user_stop(i + 1, ncs);
return -1;
}
