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authorGustavo F. Padovan <padovan@profusion.mobi>2010-10-04 19:28:52 -0300
committerGustavo F. Padovan <padovan@profusion.mobi>2010-10-04 19:28:52 -0300
commiteaa71b318c5ed0cd1ac3182a533471dc5edf372d (patch)
tree2e6b3cf97970543070334e90b4b2300b04f460d2 /net
parente454c844644683571617896ab2a4ce0109c1943e (diff)
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>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/l2cap.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 44a8fb0d6c29..0b54b7dd8401 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -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;

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