This patch adds support to enable the use of RPA Address resolution
using expermental feature mgmt command.
Signed-off-by: Sathish Narasimman <sathish.narasimman@xxxxxxxxx>
---
include/net/bluetooth/hci.h | 1 +
net/bluetooth/hci_event.c | 3 ++-
net/bluetooth/hci_request.c | 6 +++--
net/bluetooth/mgmt.c | 52 +++++++++++++++++++++++++++++++++++++
4 files changed, 59 insertions(+), 3 deletions(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 4ff2fc4498f3..cb284365b4c1 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -307,6 +307,7 @@ enum {
HCI_FORCE_BREDR_SMP,
HCI_FORCE_STATIC_ADDR,
HCI_LL_RPA_RESOLUTION,
+ HCI_ENABLE_RPA_RESOLUTION,
HCI_CMD_PENDING,
HCI_FORCE_NO_MITM,
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 684c68cb5c76..c8a5e1e4dba2 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5222,7 +5222,8 @@ static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev,
le16_to_cpu(ev->latency),
le16_to_cpu(ev->supervision_timeout));
- if (use_ll_privacy(hdev) &&
+ if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION) &&
+ use_ll_privacy(hdev) &&
hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION))
hci_req_disable_address_resolution(hdev);
}
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index c3193f7f9ff0..cb44b83539e6 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -677,7 +677,8 @@ void hci_req_add_le_scan_disable(struct hci_request *req, bool rpa_le_conn)
}
/* Disable address resolution */
- if (use_ll_privacy(hdev) &&
+ if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION) &&
+ use_ll_privacy(hdev) &&
hci_dev_test_flag(hdev, HCI_LL_RPA_RESOLUTION) && !rpa_le_conn) {
__u8 enable = 0x00;
hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
@@ -870,7 +871,8 @@ static void hci_req_start_scan(struct hci_request *req, u8 type, u16 interval,
return;
}
- if (use_ll_privacy(hdev) && addr_resolv) {
+ if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION) &&
+ use_ll_privacy(hdev) && addr_resolv) {
u8 enable = 0x01;
hci_req_add(req, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 1, &enable);
}
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index c292d5de4dc3..fbe02ab5fa05 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3759,6 +3759,12 @@ static const u8 simult_central_periph_uuid[16] = {
0x96, 0x46, 0xc0, 0x42, 0xb5, 0x10, 0x1b, 0x67,
};
+/* 15c0a148-c273-11ea-b3de-0242ac130004 */
+static const u8 rpa_resolution_uuid[16] = {
+ 0x04, 0x00, 0x13, 0xac, 0x42, 0x02, 0xde, 0xb3,
+ 0xea, 0x11, 0x73, 0xc2, 0x48, 0xa1, 0xc0, 0x15,
+};
+
static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
void *data, u16 data_len)
{
@@ -3795,6 +3801,17 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
idx++;
}
+ if (hdev) {
+ if (hci_dev_test_flag(hdev, HCI_ENABLE_RPA_RESOLUTION))
+ flags = BIT(0);
+ else
+ flags = 0;
+
+ memcpy(rp->features[idx].uuid, rpa_resolution_uuid, 16);
+ rp->features[idx].flags = cpu_to_le32(flags);
+ idx++;
+ }
+
rp->feature_count = cpu_to_le16(idx);
/* After reading the experimental features information, enable
@@ -3895,6 +3912,41 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev,
}
#endif
+ if (!memcmp(cp->uuid, rpa_resolution_uuid, 16)) {
+ bool val;
+ int err;
+
+ /* Parameters are limited to a single octet */
+ if (data_len != MGMT_SET_EXP_FEATURE_SIZE + 1)
+ return mgmt_cmd_status(sk, MGMT_INDEX_NONE,
+ MGMT_OP_SET_EXP_FEATURE,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ /* Only boolean on/off is supported */
+ if (cp->param[0] != 0x00 && cp->param[0] != 0x01)
+ return mgmt_cmd_status(sk, MGMT_INDEX_NONE,
+ MGMT_OP_SET_EXP_FEATURE,
+ MGMT_STATUS_INVALID_PARAMS);
+
+ val = !!cp->param[0];
+
+ if (val)
+ hci_dev_set_flag(hdev, HCI_ENABLE_RPA_RESOLUTION);
+ else
+ hci_dev_clear_flag(hdev, HCI_ENABLE_RPA_RESOLUTION);
+
+ memcpy(rp.uuid, rpa_resolution_uuid, 16);
+ rp.flags = cpu_to_le32(val ? BIT(0) : 0);
+
+ hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
+
+ err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
+ MGMT_OP_SET_EXP_FEATURE, 0,
+ &rp, sizeof(rp));
+
+ return err;
+ }
+
return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
MGMT_OP_SET_EXP_FEATURE,
MGMT_STATUS_NOT_SUPPORTED);
--
2.17.1
