XPRT_BOUND
test_and_set_bit(XPRT_BOUND, &xprt->state);
return test_bit(XPRT_BOUND, &xprt->state);
clear_bit(XPRT_BOUND, &xprt->state);
{ BIT(XPRT_BOUND), "BOUND" }, \
bound = test_bit(XPRT_BOUND, &xprt->state);