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Bluetooth: Improve fixed channel lookup based on link type

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When notifying global fixed channels of new connections it doesn't make
sense to consider channels meant for a different link type than the one
available. This patch adds an extra parameter to the
l2cap_global_fixed_chan() lookup function and ensures that only channels
matching the current hci_conn type are looked up.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-08-07 22:56:48 +03:00 committed by Marcel Holtmann
parent e760ec1213
commit 54a1b626c9
1 changed files with 8 additions and 3 deletions
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11
net/bluetooth/l2cap_core.c
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@ -7231,7 +7231,7 @@ int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr)
* global list (by passing NULL as first parameter).
*/
static struct l2cap_chan *l2cap_global_fixed_chan(struct l2cap_chan *c,
bdaddr_t *src)
bdaddr_t *src, u8 link_type)
{
read_lock(&chan_list_lock);
@ -7247,6 +7247,10 @@ static struct l2cap_chan *l2cap_global_fixed_chan(struct l2cap_chan *c,
continue;
if (bacmp(&c->src, src) && bacmp(&c->src, BDADDR_ANY))
continue;
if (link_type == ACL_LINK && c->src_type != BDADDR_BREDR)
continue;
if (link_type == LE_LINK && c->src_type == BDADDR_BREDR)
continue;
l2cap_chan_hold(c);
read_unlock(&chan_list_lock);
@ -7287,7 +7291,7 @@ void l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
* we left off, because the list lock would prevent calling the
* potentially sleeping l2cap_chan_lock() function.
*/
pchan = l2cap_global_fixed_chan(NULL, &hdev->bdaddr);
pchan = l2cap_global_fixed_chan(NULL, &hdev->bdaddr, hcon->type);
while (pchan) {
struct l2cap_chan *chan, *next;
@ -7308,7 +7312,8 @@ void l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
l2cap_chan_unlock(pchan);
next:
next = l2cap_global_fixed_chan(pchan, &hdev->bdaddr);
next = l2cap_global_fixed_chan(pchan, &hdev->bdaddr,
hcon->type);
l2cap_chan_put(pchan);
pchan = next;
}