Bluetooth: Add handler of MGMT_OP_READ_ADV_MONITOR_FEATURES

This adds the request handler of MGMT_OP_READ_ADV_MONITOR_FEATURES
command. Since the controller-based monitoring is not yet in place, this
report only the supported features but not the enabled features.

The following test was performed.
- Issuing btmgmt advmon-features.

Signed-off-by: Miao-chen Chou <mcchou@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index e409ff48e8e6..8aec7fbe9a38 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -37,6 +37,7 @@
 #include "smp.h"
 #include "mgmt_util.h"
 #include "mgmt_config.h"
+#include "msft.h"
 
 #define MGMT_VERSION	1
 #define MGMT_REVISION	17
@@ -118,6 +119,7 @@ static const u16 mgmt_commands[] = {
 	MGMT_OP_SET_DEF_RUNTIME_CONFIG,
 	MGMT_OP_GET_DEVICE_FLAGS,
 	MGMT_OP_SET_DEVICE_FLAGS,
+	MGMT_OP_READ_ADV_MONITOR_FEATURES,
 };
 
 static const u16 mgmt_events[] = {
@@ -3973,6 +3975,51 @@ done:
 				 &cp->addr, sizeof(cp->addr));
 }
 
+static int read_adv_mon_features(struct sock *sk, struct hci_dev *hdev,
+				 void *data, u16 len)
+{
+	struct adv_monitor *monitor = NULL;
+	struct mgmt_rp_read_adv_monitor_features *rp = NULL;
+	int handle;
+	size_t rp_size = 0;
+	__u32 supported = 0;
+	__u16 num_handles = 0;
+	__u16 handles[HCI_MAX_ADV_MONITOR_NUM_HANDLES];
+
+	BT_DBG("request for %s", hdev->name);
+
+	hci_dev_lock(hdev);
+
+	if (msft_get_features(hdev) & MSFT_FEATURE_MASK_LE_ADV_MONITOR)
+		supported |= MGMT_ADV_MONITOR_FEATURE_MASK_OR_PATTERNS;
+
+	idr_for_each_entry(&hdev->adv_monitors_idr, monitor, handle) {
+		handles[num_handles++] = monitor->handle;
+	}
+
+	hci_dev_unlock(hdev);
+
+	rp_size = sizeof(*rp) + (num_handles * sizeof(u16));
+	rp = kmalloc(rp_size, GFP_KERNEL);
+	if (!rp)
+		return -ENOMEM;
+
+	/* Once controller-based monitoring is in place, the enabled_features
+	 * should reflect the use.
+	 */
+	rp->supported_features = cpu_to_le32(supported);
+	rp->enabled_features = 0;
+	rp->max_num_handles = cpu_to_le16(HCI_MAX_ADV_MONITOR_NUM_HANDLES);
+	rp->max_num_patterns = HCI_MAX_ADV_MONITOR_NUM_PATTERNS;
+	rp->num_handles = cpu_to_le16(num_handles);
+	if (num_handles)
+		memcpy(&rp->handles, &handles, (num_handles * sizeof(u16)));
+
+	return mgmt_cmd_complete(sk, hdev->id,
+				 MGMT_OP_READ_ADV_MONITOR_FEATURES,
+				 MGMT_STATUS_SUCCESS, rp, rp_size);
+}
+
 static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
 				         u16 opcode, struct sk_buff *skb)
 {
@@ -7441,6 +7488,7 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
 						HCI_MGMT_VAR_LEN },
 	{ get_device_flags,        MGMT_GET_DEVICE_FLAGS_SIZE },
 	{ set_device_flags,        MGMT_SET_DEVICE_FLAGS_SIZE },
+	{ read_adv_mon_features,   MGMT_READ_ADV_MONITOR_FEATURES_SIZE },
 };
 
 void mgmt_index_added(struct hci_dev *hdev)