diff options
Diffstat (limited to 'net/bluetooth/hci_core.c')
| -rw-r--r-- | net/bluetooth/hci_core.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 93f92a085506..96e7321c57a4 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3959,17 +3959,29 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy, } /* In case of required privacy without resolvable private address, - * use an unresolvable private address. This is useful for active + * use an non-resolvable private address. This is useful for active * scanning and non-connectable advertising. */ if (require_privacy) { - bdaddr_t urpa; + bdaddr_t nrpa; - get_random_bytes(&urpa, 6); - urpa.b[5] &= 0x3f; /* Clear two most significant bits */ + while (true) { + /* The non-resolvable private address is generated + * from random six bytes with the two most significant + * bits cleared. + */ + get_random_bytes(&nrpa, 6); + nrpa.b[5] &= 0x3f; + + /* The non-resolvable private address shall not be + * equal to the public address. + */ + if (bacmp(&hdev->bdaddr, &nrpa)) + break; + } *own_addr_type = ADDR_LE_DEV_RANDOM; - set_random_addr(req, &urpa); + set_random_addr(req, &nrpa); return 0; } @@ -5625,7 +5637,7 @@ void hci_req_add_le_passive_scan(struct hci_request *req) u8 filter_policy; /* Set require_privacy to false since no SCAN_REQ are send - * during passive scanning. Not using an unresolvable address + * during passive scanning. Not using an non-resolvable address * here is important so that peer devices using direct * advertising with our address will be correctly reported * by the controller. |