Re: [PATCHv1 11/12] Bluetooth: AMP: Use l2cap_physical_cfm in phylink complete evt

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Andrei -

On Wed, 31 Oct 2012, Andrei Emeltchenko wrote:

From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>

When receiving HCI Phylink Complete event run amp_physical_cfm
which initialize BR/EDR L2CAP channel associated with High Speed
link and run l2cap_physical_cfm which shall send L2CAP Create
Chan Request.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Acked-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
include/net/bluetooth/amp.h   |    1 +
include/net/bluetooth/l2cap.h |    1 +
net/bluetooth/amp.c           |   24 ++++++++++++++++++++++++
net/bluetooth/hci_event.c     |   15 ++-------------
4 files changed, 28 insertions(+), 13 deletions(-)

diff --git a/include/net/bluetooth/amp.h b/include/net/bluetooth/amp.h
index f1c0017..7ea3db7 100644
--- a/include/net/bluetooth/amp.h
+++ b/include/net/bluetooth/amp.h
@@ -46,6 +46,7 @@ void amp_accept_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
			struct hci_conn *hcon);
void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle);
void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle);
+void amp_physical_cfm(struct hci_conn *bredr_hcon, struct hci_conn *hs_hcon);
void amp_create_logical_link(struct l2cap_chan *chan);
void amp_disconnect_logical_link(struct hci_chan *hchan);
void amp_destroy_logical_link(struct hci_chan *hchan, u8 reason);
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 24c61ef..18149c8 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -812,5 +812,6 @@ void l2cap_send_conn_req(struct l2cap_chan *chan);
void l2cap_move_start(struct l2cap_chan *chan);
void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
		       u8 status);
+void l2cap_physical_cfm(struct l2cap_chan *chan, int result);

#endif /* __L2CAP_H */
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index 917e034..650bb8d 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -373,6 +373,30 @@ void amp_accept_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
	hci_send_cmd(hdev, HCI_OP_ACCEPT_PHY_LINK, sizeof(cp), &cp);
}

+void amp_physical_cfm(struct hci_conn *bredr_hcon, struct hci_conn *hs_hcon)
+{
+	struct hci_dev *bredr_hdev = hci_dev_hold(bredr_hcon->hdev);
+	struct amp_mgr *mgr = hs_hcon->amp_mgr;
+	struct l2cap_chan *bredr_chan;
+
+	BT_DBG("bredr_hcon %p hs_hcon %p mgr %p", bredr_hcon, hs_hcon, mgr);
+
+	if (!bredr_hdev || !mgr || !mgr->bredr_chan)
+		return;
+
+	bredr_chan = mgr->bredr_chan;
+
+	set_bit(FLAG_EFS_ENABLE, &bredr_chan->flags);
+	bredr_chan->ctrl_id = hs_hcon->remote_id;
+	bredr_chan->hs_hcon = hs_hcon;
+	bredr_chan->conn->mtu = hs_hcon->hdev->block_mtu;
+	bredr_chan->fcs = L2CAP_FCS_NONE;

Sorry I missed this earlier: bredr_chan needs to be locked before changing it. I suggest passing the information to l2cap_physical_cfm and letting that function update the structure members while it holds the lock.


+
+	l2cap_physical_cfm(bredr_chan, 0);
+
+	hci_dev_put(bredr_hdev);
+}
+
void amp_create_logical_link(struct l2cap_chan *chan)
{
	struct hci_cp_create_accept_logical_link cp;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 03d51a1..0b37f55 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3697,20 +3697,9 @@ static void hci_phy_link_complete_evt(struct hci_dev *hdev,
	hci_conn_hold_device(hcon);
	hci_conn_add_sysfs(hcon);

-	hci_dev_unlock(hdev);
-
-	if (hcon->out) {
-		struct hci_dev *bredr_hdev = hci_dev_hold(bredr_hcon->hdev);
-
-		if (!bredr_hdev)
-			return;
+	amp_physical_cfm(bredr_hcon, hcon);

-		/* Placeholder - create chan req
-		l2cap_chan_create_cfm(bredr_hcon, hcon->remote_id);
-		*/
-
-		hci_dev_put(bredr_hdev);
-	}
+	hci_dev_unlock(hdev);
}

static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
--
1.7.9.5



Regards,

--
Mat Martineau

Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation



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