RRSR_2M
basic_rates |= RRSR_1M | RRSR_2M | RRSR_5_5M | RRSR_11M;
u16 basic_rate = RRSR_1M | RRSR_2M | RRSR_5_5M | RRSR_11M | RRSR_6M;
#define RRSR_CCK_RATES (RRSR_11M|RRSR_5_5M|RRSR_2M|RRSR_1M)