NIG_REG_EGRESS_UMP0_IN_EN
val = REG_RD(bp, NIG_REG_EGRESS_UMP0_IN_EN + port*4);
REG_WR(bp, NIG_REG_EGRESS_UMP0_IN_EN + port*4, 0);
REG_WR(bp, NIG_REG_EGRESS_UMP0_IN_EN + port*4, val);