Bluetooth: Add data structure for advertising instance

This patch introduces a new data structure to represent advertising
instances that were added using the "Add Advertising" mgmt command.
Initially an hci_dev structure will support only one of these instances
at a time, so the current instance is simply stored as a direct member
of hci_dev.

Signed-off-by: Arman Uguray <armansito@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/bluetooth/hci_core.h

@@ -155,6 +155,15 @@ struct oob_data {
 	u8 rand256[16];
 };
 
+struct adv_info {
+	__u8	instance;
+	__u32	flags;
+	__u16	adv_data_len;
+	__u8	adv_data[HCI_MAX_AD_LENGTH];
+	__u16	scan_rsp_len;
+	__u8	scan_rsp_data[HCI_MAX_AD_LENGTH];
+};
+
 #define HCI_MAX_SHORT_NAME_LENGTH	10
 
 /* Default LE RPA expiry time, 15 minutes */
@@ -364,6 +373,8 @@ struct hci_dev {
 	__u8			scan_rsp_data[HCI_MAX_AD_LENGTH];
 	__u8			scan_rsp_data_len;
 
+	struct adv_info		adv_instance;
+
 	__u8			irk[16];
 	__u32			rpa_timeout;
 	struct delayed_work	rpa_expired;
@@ -550,6 +561,11 @@ static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 	hdev->discovery.scan_duration = 0;
 }
 
+static inline void adv_info_init(struct hci_dev *hdev)
+{
+	memset(&hdev->adv_instance, 0, sizeof(struct adv_info));
+}
+
 bool hci_discovery_active(struct hci_dev *hdev);
 
 void hci_discovery_set_state(struct hci_dev *hdev, int state);

net/bluetooth/hci_core.c

@@ -3126,6 +3126,7 @@ struct hci_dev *hci_alloc_dev(void)
 
 	hci_init_sysfs(hdev);
 	discovery_init(hdev);
+	adv_info_init(hdev);
 
 	return hdev;
 }