hci_find_irk_by_rpa
struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
return hci_find_irk_by_rpa(hdev, bdaddr);
irk1 = hci_find_irk_by_rpa(hdev, dst);
irk2 = hci_find_irk_by_rpa(hdev,