CEPH_CON_F_SOCK_CLOSED
if (!ceph_con_flag_test_and_clear(con, CEPH_CON_F_SOCK_CLOSED))
ceph_con_flag_set(con, CEPH_CON_F_SOCK_CLOSED);
ceph_con_flag_clear(con, CEPH_CON_F_SOCK_CLOSED);
case CEPH_CON_F_SOCK_CLOSED: