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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: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Johan Hedberg 2013-03-05 20:37:46 +02:00 committed by Gustavo Padovan
parent 1ca3a9d06e
commit 71c76a170e
2 changed files with 23 additions and 0 deletions
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1
include/net/bluetooth/hci_core.h
View File

@ -1048,6 +1048,7 @@ struct hci_request {
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_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);
void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);

22
net/bluetooth/hci_core.c
View File

@ -2517,6 +2517,28 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
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 */
void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode)
{