BTH_QPN_MASK
return BTH_QPN_MASK & be32_to_cpu(bth->qpn);
bth->qpn = cpu_to_be32((BTH_QPN_MASK & qpn) |
(~BTH_QPN_MASK & resvqpn));
bth->qpn = cpu_to_be32(qpn & BTH_QPN_MASK);
bth->qpn |= cpu_to_be32(~BTH_QPN_MASK);