HNS_RXD_BUFNUM_S
#define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S)
HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S) + 1;
HNS_RXD_BUFNUM_M, HNS_RXD_BUFNUM_S);