From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
This function is needed for situations where a transaction needs to be
constructed straight from an skb. This happens e.g. when going through
the HCI driver initialization commands in hci_init_req() or when
receiving commands from user space through a raw HCI socket.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/hci_core.c | 29 +++++++++++++++++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 54efaa2..b5c6f99 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1063,6 +1063,7 @@ int hci_complete_transaction(struct hci_dev *hdev,
void (*complete)(struct hci_dev *hdev,
__u16 last_cmd, int status));
bool hci_transaction_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
+int hci_transaction_from_skb(struct hci_dev *hdev, struct sk_buff *skb);
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);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index dec84a1..72abf9c 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2277,6 +2277,35 @@ unlock:
return err;
}
+static int __transaction_from_skb(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_transaction *transaction;
+
+ transaction = kmalloc(sizeof(*transaction), GFP_ATOMIC);
+ if (!transaction)
+ return -ENOMEM;
+
+ memset(transaction, 0, sizeof(*transaction));
+ skb_queue_head_init(&transaction->cmd_q);
+
+ skb_queue_tail(&transaction->cmd_q, skb);
+
+ __transaction_add(hdev, transaction);
+
+ return 0;
+}
+
+int hci_transaction_from_skb(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ int err;
+
+ hci_transaction_lock(hdev);
+ err = __transaction_from_skb(hdev, skb);
+ hci_transaction_unlock(hdev);
+
+ return err;
+}
+
/* Send HCI command */
int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param)
{
--
1.7.10.4
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