case_rtn_string
case_rtn_string(ATH_OFFCHANNEL_IDLE);
case_rtn_string(ATH_OFFCHANNEL_PROBE_SEND);
case_rtn_string(ATH_OFFCHANNEL_PROBE_WAIT);
case_rtn_string(ATH_OFFCHANNEL_SUSPEND);
case_rtn_string(ATH_OFFCHANNEL_ROC_START);
case_rtn_string(ATH_OFFCHANNEL_ROC_WAIT);
case_rtn_string(ATH_OFFCHANNEL_ROC_DONE);
case_rtn_string(ATH_CHANCTX_EVENT_BEACON_PREPARE);
case_rtn_string(ATH_CHANCTX_EVENT_BEACON_SENT);
case_rtn_string(ATH_CHANCTX_EVENT_TSF_TIMER);
case_rtn_string(ATH_CHANCTX_EVENT_BEACON_RECEIVED);
case_rtn_string(ATH_CHANCTX_EVENT_AUTHORIZED);
case_rtn_string(ATH_CHANCTX_EVENT_SWITCH);
case_rtn_string(ATH_CHANCTX_EVENT_ASSIGN);
case_rtn_string(ATH_CHANCTX_EVENT_UNASSIGN);
case_rtn_string(ATH_CHANCTX_EVENT_CHANGE);
case_rtn_string(ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL);
case_rtn_string(ATH_CHANCTX_STATE_IDLE);
case_rtn_string(ATH_CHANCTX_STATE_WAIT_FOR_BEACON);
case_rtn_string(ATH_CHANCTX_STATE_WAIT_FOR_TIMER);
case_rtn_string(ATH_CHANCTX_STATE_SWITCH);
case_rtn_string(ATH_CHANCTX_STATE_FORCE_ACTIVE);