Commit eaa71b31 authored Oct 04, 2010 by Gustavo Padovan

Bluetooth: Disallow to change L2CAP_OPTIONS values when connected



L2CAP doesn't permit change like MTU, FCS, TxWindow values while the
connection is alive, we can only set that before the
connection/configuration process. That can lead to bugs in the L2CAP
operation.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

parent e454c844

net/bluetooth/l2cap.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1950,6 +1950,11 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us

		switch (optname) {
		case L2CAP_OPTIONS:
		if (sk->sk_state == BT_CONNECTED) {
		err = -EINVAL;
		break;
		}

		opts.imtu = l2cap_pi(sk)->imtu;
		opts.omtu = l2cap_pi(sk)->omtu;
		opts.flush_to = l2cap_pi(sk)->flush_to;