[PATCH] Bluetooth: LE pairing is finished if error in connection

[PATCH] Bluetooth: LE pairing is finished if error in connection

[Vishal Agarwal]

For BR/EDR pairing is assumed to be finished when connection is
done. For LE if connection is successful it did not necessarily
mean that pairing is also done but if the connection is unsuccessful
it should be assumed that pairing procedure is also finished.
This patch registers a newfunction with connect_cfm_cb callback for
LE link which sends the pairing complete signal to user space if
connection is unsuccessful.

Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
---
 net/bluetooth/mgmt.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 958f764..ce97c37 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1873,6 +1873,22 @@ static void pairing_complete_cb(struct hci_conn *conn, u8 status)
 		pairing_complete(cmd, mgmt_status(status));
 }
 
+static void le_connect_complete_cb(struct hci_conn *conn, u8 status)
+{
+	struct pending_cmd *cmd;
+
+	BT_DBG("status %u", status);
+
+	if (!status && conn->type == LE_LINK)
+		return;
+
+	cmd = find_pairing(conn);
+	if (!cmd)
+		BT_DBG("Unable to find a pending command");
+	else
+		pairing_complete(cmd, mgmt_status(status));
+}
+
 static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 		       u16 len)
 {
@@ -1941,6 +1957,8 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data,
 	/* For LE, just connecting isn't a proof that the pairing finished */
 	if (cp->addr.type == BDADDR_BREDR)
 		conn->connect_cfm_cb = pairing_complete_cb;
+	else
+		conn->connect_cfm_cb = le_connect_complete_cb;
 
 	conn->security_cfm_cb = pairing_complete_cb;
 	conn->disconn_cfm_cb = pairing_complete_cb;
-- 
1.7.0.4

Re: [PATCH] Bluetooth: LE pairing is finished if error in connection

[Johan Hedberg]

Hi Vishal,

On Wed, Jun 06, 2012, Vishal Agarwal wrote:
> For BR/EDR pairing is assumed to be finished when connection is
> done. For LE if connection is successful it did not necessarily
> mean that pairing is also done but if the connection is unsuccessful
> it should be assumed that pairing procedure is also finished.
> This patch registers a newfunction with connect_cfm_cb callback for
> LE link which sends the pairing complete signal to user space if
> connection is unsuccessful.
> 
> Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
> ---
>  net/bluetooth/mgmt.c |   18 ++++++++++++++++++
>  1 files changed, 18 insertions(+), 0 deletions(-)

The patch looks ok'ish to me but I'd at least change the commit message
summary line into the form "Fix LE pairing completion with connection
failure" (or something similar) to make it clear that this is a fix and
something that needs to go to 3.5.

Johan