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Bluetooth: L2CAP: Fix rejecting L2CAP_CONN_PARAM_UPDATE_REQ

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[ Upstream commit 806a5198c05987b748b50f3d0c0cfb3d417381a4 ]

This removes the bogus check for max > hcon->le_conn_max_interval since
the later is just the initial maximum conn interval not the maximum the
stack could support which is really 3200=4000ms.

In order to pass GAP/CONN/CPUP/BV-05-C one shall probably enter values
of the following fields in IXIT that would cause hci_check_conn_params
to fail:

TSPX_conn_update_int_min
TSPX_conn_update_int_max
TSPX_conn_update_peripheral_latency
TSPX_conn_update_supervision_timeout

Link: https://github.com/bluez/bluez/issues/847
Fixes: e4b019515f95 ("Bluetooth: Enforce validation on max value of connection interval")
Signed-off-by: Luiz Augusto von Dentz <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Luiz Augusto von Dentz 2024-05-20 16:03:07 -04:00 • committed by Greg Kroah-Hartman
commit cd41a24ab4
2 changed files with 33 additions and 11 deletions
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8
net/bluetooth/l2cap_core.c
View file

@ -5334,13 +5334,7 @@ static inline int l2cap_conn_param_update_req(struct l2cap_conn *conn,
memset(&rsp, 0, sizeof(rsp));
if (max > hcon->le_conn_max_interval) {
BT_DBG("requested connection interval exceeds current bounds.");
err = -EINVAL;
} else {
err = hci_check_conn_params(min, max, latency, to_multiplier);
}
err = hci_check_conn_params(min, max, latency, to_multiplier);
if (err)
rsp.result = cpu_to_le16(L2CAP_CONN_PARAM_REJECTED);
else