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Bluetooth: Block ATT connection on LE when device is blocked 

When the remote LE device is blocked, then do not create a L2CAP
channel for it. Without a channel, all packets for that connection
will be dropped.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
hifive-unleashed-5.1
Marcel Holtmann 2013-10-18 03:43:01 -07:00 committed by Johan Hedberg
parent 06ae3314e0
commit cc8dba2bc3
1 changed files with 16 additions and 5 deletions
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21
net/bluetooth/l2cap_core.c
View File

@ -1382,14 +1382,16 @@ static struct l2cap_chan *l2cap_global_chan_by_scid(int state, u16 cid,
static void l2cap_le_conn_ready(struct l2cap_conn *conn)
{
struct hci_conn *hcon = conn->hcon;
struct sock *parent;
struct l2cap_chan *chan, *pchan;
u8 dst_type;
BT_DBG("");
/* Check if we have socket listening on cid */
pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_ATT,
&conn->hcon->src, &conn->hcon->dst);
&hcon->src, &hcon->dst);
if (!pchan)
return;
@ -1397,6 +1399,12 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
if (__l2cap_get_chan_by_dcid(conn, L2CAP_CID_ATT))
return;
dst_type = bdaddr_type(hcon, hcon->dst_type);
/* If device is blocked, do not create a channel for it */
if (hci_blacklist_lookup(hcon->hdev, &hcon->dst, dst_type))
return;
parent = pchan->sk;
lock_sock(parent);
@ -1407,10 +1415,10 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
chan->dcid = L2CAP_CID_ATT;
bacpy(&chan->src, &conn->hcon->src);
bacpy(&chan->dst, &conn->hcon->dst);
chan->src_type = bdaddr_type(conn->hcon, conn->hcon->src_type);
chan->dst_type = bdaddr_type(conn->hcon, conn->hcon->dst_type);
bacpy(&chan->src, &hcon->src);
bacpy(&chan->dst, &hcon->dst);
chan->src_type = bdaddr_type(hcon, hcon->src_type);
chan->dst_type = dst_type;
__l2cap_chan_add(conn, chan);
@ -6438,6 +6446,9 @@ static void l2cap_att_channel(struct l2cap_conn *conn,
BT_DBG("chan %p, len %d", chan, skb->len);
if (hci_blacklist_lookup(hcon->hdev, &hcon->dst, hcon->dst_type))
goto drop;
if (chan->imtu < skb->len)
goto drop;