Bluetooth: Use bt_cb(skb)->chan to send raw data back

Instead of accessing skb->sk in L2CAP core we now compare the channel
a skb belongs to and not send it back if the channel is same. This change
removes another struct socket usage from L2CAP core.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index bb6d35e6b832..0cef67707838 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2813,17 +2813,16 @@ static void l2cap_raw_recv(struct l2cap_conn *conn, struct sk_buff *skb)
         mutex_lock(&conn->chan_lock);
 
         list_for_each_entry(chan, &conn->chan_l, list) {
-                struct sock *sk = chan->sk;
                 if (chan->chan_type != L2CAP_CHAN_RAW)
                         continue;
 
-                /* Don't send frame to the socket it came from */
-                if (skb->sk == sk)
+                /* Don't send frame to the channel it came from */
+                if (bt_cb(skb)->chan == chan)
                         continue;
+
                 nskb = skb_clone(skb, GFP_KERNEL);
                 if (!nskb)
                         continue;
-
                 if (chan->ops->recv(chan, nskb))
                         kfree_skb(nskb);
         }