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authorJaganath Kanakkassery <jaganath.k.os@gmail.com>2018-07-19 14:39:45 +0300
committerMarcel Holtmann <marcel@holtmann.org>2018-07-30 14:44:53 +0300
commita73c046a2869048430c332a871a5b169f192c6c3 (patch)
tree181d2505299b87573aec081feb32b4f0b9e394ae /net/bluetooth/hci_conn.c
parent075e40b79f6d0aa1479701d2dd6dea3b78478d60 (diff)
downloadlinux-a73c046a2869048430c332a871a5b169f192c6c3.tar.xz
Bluetooth: Implement Set ADV set random address
This basically sets the random address for the adv instance Random address can be set only if the instance is created which is done in Set ext adv param. Random address and rpa expire timer and flags have been added to adv instance which will be used when the respective instance is scheduled. This introduces a hci_get_random_address() which returns the own address type and random address (rpa or nrpa) based on the instance flags and hdev flags. New function is required since own address type should be known before setting adv params but address can be set only after setting params. < HCI Command: LE Set Advertising Set Random Address (0x08|0x0035) plen 7 Advertising handle: 0x00 Advertising random address: 3C:8E:56:9B:77:84 (OUI 3C-8E-56) > HCI Event: Command Complete (0x0e) plen 4 LE Set Advertising Set Random Address (0x08|0x0035) ncmd 1 Status: Success (0x00) Signed-off-by: Jaganath Kanakkassery <jaganathx.kanakkassery@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_conn.c')
-rw-r--r--net/bluetooth/hci_conn.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 5c37d383caa3..bd4978ce8c45 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -873,6 +873,14 @@ static void hci_req_directed_advertising(struct hci_request *req,
if (ext_adv_capable(hdev)) {
struct hci_cp_le_set_ext_adv_params cp;
+ bdaddr_t random_addr;
+
+ /* Set require_privacy to false so that the remote device has a
+ * chance of identifying us.
+ */
+ if (hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL,
+ &own_addr_type, &random_addr) < 0)
+ return;
memset(&cp, 0, sizeof(cp));
@@ -889,6 +897,21 @@ static void hci_req_directed_advertising(struct hci_request *req,
hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_PARAMS, sizeof(cp), &cp);
+ if (own_addr_type == ADDR_LE_DEV_RANDOM &&
+ bacmp(&random_addr, BDADDR_ANY) &&
+ bacmp(&random_addr, &hdev->random_addr)) {
+ struct hci_cp_le_set_adv_set_rand_addr cp;
+
+ memset(&cp, 0, sizeof(cp));
+
+ cp.handle = 0;
+ bacpy(&cp.bdaddr, &random_addr);
+
+ hci_req_add(req,
+ HCI_OP_LE_SET_ADV_SET_RAND_ADDR,
+ sizeof(cp), &cp);
+ }
+
__hci_req_enable_ext_advertising(req);
} else {
struct hci_cp_le_set_adv_param cp;