Commit 71c76a17 authored by Johan Hedberg's avatar Johan Hedberg Committed by Gustavo Padovan

Bluetooth: Introduce new hci_req_add function

This function is analogous to hci_send_cmd() but instead of directly
queuing the command to hdev->cmd_q it adds it to the local queue of the
asynchronous HCI request being build (inside struct hci_request).

This is the main function used for building asynchronous requests and
there should be one or more calls to it between calls to hci_req_init
and hci_req_run.
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
Acked-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
parent 1ca3a9d0
...@@ -1048,6 +1048,7 @@ struct hci_request { ...@@ -1048,6 +1048,7 @@ struct hci_request {
void hci_req_init(struct hci_request *req, struct hci_dev *hdev); void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
int hci_req_run(struct hci_request *req, hci_req_complete_t complete); int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param);
int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param); int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
......
...@@ -2517,6 +2517,28 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) ...@@ -2517,6 +2517,28 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
return 0; return 0;
} }
/* Queue a command to an asynchronous HCI request */
int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
{
struct hci_dev *hdev = req->hdev;
struct sk_buff *skb;
BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen);
skb = hci_prepare_cmd(hdev, opcode, plen, param);
if (!skb) {
BT_ERR("%s no memory for command", hdev->name);
return -ENOMEM;
}
if (skb_queue_empty(&req->cmd_q))
bt_cb(skb)->req.start = true;
skb_queue_tail(&req->cmd_q, skb);
return 0;
}
/* Get data from the previously sent command */ /* Get data from the previously sent command */
void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
{ {
......
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