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Bluetooth: Fix lookup of fixed channels by local bdaddr

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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 <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-01-15 13:06:45 +02:00 committed by Marcel Holtmann
parent a250e048a7
commit 327a71910c
1 changed files with 7 additions and 8 deletions
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15
net/bluetooth/l2cap_core.c
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@ -7207,8 +7207,10 @@ int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr)
* global list (by passing NULL as first parameter). * global list (by passing NULL as first parameter).
*/ */
static struct l2cap_chan *l2cap_global_fixed_chan(struct l2cap_chan *c, 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); read_lock(&chan_list_lock);
if (c) if (c)
@ -7221,11 +7223,9 @@ static struct l2cap_chan *l2cap_global_fixed_chan(struct l2cap_chan *c,
continue; continue;
if (c->state != BT_LISTEN) if (c->state != BT_LISTEN)
continue; continue;
if (bacmp(&c->src, src) && bacmp(&c->src, BDADDR_ANY)) if (bacmp(&c->src, &hcon->src) && bacmp(&c->src, BDADDR_ANY))
continue; continue;
if (link_type == ACL_LINK && c->src_type != BDADDR_BREDR) if (src_type != c->src_type)
continue;
if (link_type == LE_LINK && c->src_type == BDADDR_BREDR)
continue; continue;
l2cap_chan_hold(c); 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 * we left off, because the list lock would prevent calling the
* potentially sleeping l2cap_chan_lock() function. * 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) { while (pchan) {
struct l2cap_chan *chan, *next; struct l2cap_chan *chan, *next;
@ -7288,8 +7288,7 @@ void l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
l2cap_chan_unlock(pchan); l2cap_chan_unlock(pchan);
next: next:
next = l2cap_global_fixed_chan(pchan, &hdev->bdaddr, next = l2cap_global_fixed_chan(pchan, hcon);
hcon->type);
l2cap_chan_put(pchan); l2cap_chan_put(pchan);
pchan = next; pchan = next;
} }