CDS_INIT_LIST_HEAD(&sw->events);
cds_list_add(&sw->list, &chan->session->wildcards);
cds_list_add(&sw->session_list, &e->session_list);
CDS_INIT_LIST_HEAD(&sw->events);
cds_list_add(&sw->list, &chan->session->wildcards);
cds_list_add(&sw->session_list, &e->session_list);