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Bluetooth: Disallow to change L2CAP_OPTIONS values when connected

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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>
This commit is contained in:
Gustavo F. Padovan 2010-10-04 19:28:52 -03:00
parent e454c84464
commit eaa71b318c
1 changed files with 5 additions and 0 deletions
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5
net/bluetooth/l2cap.c
View file

@ -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;