ath_driver_req_open
if (ath_driver_req_open(&req, ifname) < 0) {
if (ath_driver_req_open(&req, ifname) < 0) {
(void) ath_driver_req_open(&wf->req, ifname);
extern int ath_driver_req_open(struct ath_driver_req *req, const char *ifname);