From 54a1b626c96039f172dd2ea15b2671053b3c5a68 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Thu, 7 Aug 2014 22:56:48 +0300 Subject: [PATCH] Bluetooth: Improve fixed channel lookup based on link type 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 Signed-off-by: Marcel Holtmann --- net/bluetooth/l2cap_core.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 8c4767f..191b58f 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -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; } -- 2.7.4