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Bluetooth: hci_event: Fix parsing of CIS Established Event

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The ISO Interval on CIS Established Event uses 1.25 ms slots:

    BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E
    page 2304:

      Time = N * 1.25 ms

In addition to that this always update the QoS settings based on CIS
Established Event.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Luiz Augusto von Dentz 2023-06-20 15:41:11 -07:00 committed by Jakub Kicinski
parent 5b6d345d1b
commit 2be22f1941
1 changed files with 32 additions and 13 deletions
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45
net/bluetooth/hci_event.c
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@ -6786,6 +6786,7 @@ static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
{
struct hci_evt_le_cis_established *ev = data;
struct hci_conn *conn;
struct bt_iso_qos *qos;
u16 handle = __le16_to_cpu(ev->handle);
bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
@ -6807,21 +6808,39 @@ static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data,
goto unlock;
}
if (conn->role == HCI_ROLE_SLAVE) {
__le32 interval;
qos = &conn->iso_qos;
memset(&interval, 0, sizeof(interval));
/* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */
qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250;
qos->ucast.out.interval = qos->ucast.in.interval;
memcpy(&interval, ev->c_latency, sizeof(ev->c_latency));
conn->iso_qos.ucast.in.interval = le32_to_cpu(interval);
memcpy(&interval, ev->p_latency, sizeof(ev->p_latency));
conn->iso_qos.ucast.out.interval = le32_to_cpu(interval);
conn->iso_qos.ucast.in.latency = le16_to_cpu(ev->interval);
conn->iso_qos.ucast.out.latency = le16_to_cpu(ev->interval);
conn->iso_qos.ucast.in.sdu = le16_to_cpu(ev->c_mtu);
conn->iso_qos.ucast.out.sdu = le16_to_cpu(ev->p_mtu);
conn->iso_qos.ucast.in.phy = ev->c_phy;
conn->iso_qos.ucast.out.phy = ev->p_phy;
switch (conn->role) {
case HCI_ROLE_SLAVE:
/* Convert Transport Latency (us) to Latency (msec) */
qos->ucast.in.latency =
DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
1000);
qos->ucast.out.latency =
DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
1000);
qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu);
qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu);
qos->ucast.in.phy = ev->c_phy;
qos->ucast.out.phy = ev->p_phy;
break;
case HCI_ROLE_MASTER:
/* Convert Transport Latency (us) to Latency (msec) */
qos->ucast.out.latency =
DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency),
1000);
qos->ucast.in.latency =
DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency),
1000);
qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu);
qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu);
qos->ucast.out.phy = ev->c_phy;
qos->ucast.in.phy = ev->p_phy;
break;
}
if (!ev->status) {