From 327a71910cbecd873054c3fb764f1fc59ede5297 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Thu, 15 Jan 2015 13:06:45 +0200 Subject: [PATCH] Bluetooth: Fix lookup of fixed channels by local bdaddr The comparing of chan->src should always be done against the local identity address, represented by hcon->src and hcon->src_type. This patch modifies l2cap_global_fixed_chan() to take the full hci_conn so that we can easily compare against hcon->src and hcon->src_type. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann --- net/bluetooth/l2cap_core.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index b080133010e2..6ba33f9631e8 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -7207,8 +7207,10 @@ 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, u8 link_type) + struct hci_conn *hcon) { + u8 src_type = bdaddr_src_type(hcon); + read_lock(&chan_list_lock); if (c) @@ -7221,11 +7223,9 @@ static struct l2cap_chan *l2cap_global_fixed_chan(struct l2cap_chan *c, continue; if (c->state != BT_LISTEN) continue; - if (bacmp(&c->src, src) && bacmp(&c->src, BDADDR_ANY)) - continue; - if (link_type == ACL_LINK && c->src_type != BDADDR_BREDR) + if (bacmp(&c->src, &hcon->src) && bacmp(&c->src, BDADDR_ANY)) continue; - if (link_type == LE_LINK && c->src_type == BDADDR_BREDR) + if (src_type != c->src_type) continue; l2cap_chan_hold(c); @@ -7267,7 +7267,7 @@ 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, hcon->type); + pchan = l2cap_global_fixed_chan(NULL, hcon); while (pchan) { struct l2cap_chan *chan, *next; @@ -7288,8 +7288,7 @@ void l2cap_connect_cfm(struct hci_conn *hcon, u8 status) l2cap_chan_unlock(pchan); next: - next = l2cap_global_fixed_chan(pchan, &hdev->bdaddr, - hcon->type); + next = l2cap_global_fixed_chan(pchan, hcon); l2cap_chan_put(pchan); pchan = next; } -- GitLab