Bluetooth: Add __hci_cmd_send function (d6ee6ad7) · Commits · 戴 / test

include/net/bluetooth/hci_core.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -1393,6 +1393,8 @@ struct sk_buff __hci_cmd_sync(struct hci_dev hdev, u16 opcode, u32 plen,
		const void *param, u32 timeout);
		struct sk_buff __hci_cmd_sync_ev(struct hci_dev hdev, u16 opcode, u32 plen,
		const void *param, u8 event, u32 timeout);
		int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
		const void *param);

		int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
		const void *param);

+31 −0

Original line number	Diff line number	Diff line
		@@ -3422,6 +3422,37 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
		return 0;
		}

		int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
		const void *param)
		{
		struct sk_buff *skb;

		if (hci_opcode_ogf(opcode) != 0x3f) {
		/* A controller receiving a command shall respond with either
		* a Command Status Event or a Command Complete Event.
		* Therefore, all standard HCI commands must be sent via the
		* standard API, using hci_send_cmd or hci_cmd_sync helpers.
		* Some vendors do not comply with this rule for vendor-specific
		* commands and do not return any event. We want to support
		* unresponded commands for such cases only.
		*/
		bt_dev_err(hdev, "unresponded command not supported");
		return -EINVAL;
		}

		skb = hci_prepare_cmd(hdev, opcode, plen, param);
		if (!skb) {
		bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)",
		opcode);
		return -ENOMEM;
		}

		hci_send_frame(hdev, skb);

		return 0;
		}
		EXPORT_SYMBOL(__hci_cmd_send);

		/* Get data from the previously sent command */
		void hci_sent_cmd_data(struct hci_dev hdev, __u16 opcode)
		{