[PATCH v1] Bluetooth: Fix cvsd sco setup failure
From: Zijun Hu
Date: Thu Jul 14 2022 - 03:15:30 EST
A cvsd sco setup failure issue is reported as shown by
below btmon log, it firstly tries to set up cvsd esco with
S3/S2/S1 configs sequentially, but these attempts are all
failed with error code "Unspecified Error (0x1f)", then it
tries to set up cvsd sco with D1 config, unfortunately, it
still fails to set up sco with error code
"Invalid HCI Command Parameters (0x12)", this error code
terminates attempt with remaining D0 config and marks overall
sco/esco setup failure.
It is wrong D1/D0 @retrans_effort 0x01 within @esco_param_cvsd
that causes D1 config failure with error code
"Invalid HCI Command Parameters (0x12)", D1/D0 sco @retrans_effort
must not be 0x01 based on spec, so fix this issue by changing D1/D0
@retrans_effort from 0x01 to 0xff as present @sco_param_cvsd.
< HCI Command: Setup Synchrono.. (0x01|0x0028) plen 17 #3405 [hci0]
Handle: 3
Transmit bandwidth: 8000
Receive bandwidth: 8000
Max latency: 10
Setting: 0x0060
Input Coding: Linear
Input Data Format: 2's complement
Input Sample Size: 16-bit
# of bits padding at MSB: 0
Air Coding Format: CVSD
Retransmission effort: Optimize for power consumption (0x01)
Packet type: 0x0380
3-EV3 may not be used
2-EV5 may not be used
3-EV5 may not be used
> HCI Event: Command Status (0x0f) plen 4 #3406 [hci0]
Setup Synchronous Connection (0x01|0x0028) ncmd 1
Status: Success (0x00)
> HCI Event: Synchronous Connect Comp.. (0x2c) plen 17 #3408 [hci0]
Status: Unspecified Error (0x1f)
Handle: 4
Address: 14:3F:A6:47:56:15 (OUI 14-3F-A6)
Link type: eSCO (0x02)
Transmission interval: 0x00
Retransmission window: 0x00
RX packet length: 0
TX packet length: 0
Air mode: CVSD (0x02)
< HCI Command: Setup Synchrono.. (0x01|0x0028) plen 17 #3409 [hci0]
Handle: 3
Transmit bandwidth: 8000
Receive bandwidth: 8000
Max latency: 7
Setting: 0x0060
Input Coding: Linear
Input Data Format: 2's complement
Input Sample Size: 16-bit
# of bits padding at MSB: 0
Air Coding Format: CVSD
Retransmission effort: Optimize for power consumption (0x01)
Packet type: 0x0380
3-EV3 may not be used
2-EV5 may not be used
3-EV5 may not be used
> HCI Event: Command Status (0x0f) plen 4 #3410 [hci0]
Setup Synchronous Connection (0x01|0x0028) ncmd 1
Status: Success (0x00)
> HCI Event: Synchronous Connect Comp.. (0x2c) plen 17 #3416 [hci0]
Status: Unspecified Error (0x1f)
Handle: 4
Address: 14:3F:A6:47:56:15 (OUI 14-3F-A6)
Link type: eSCO (0x02)
Transmission interval: 0x00
Retransmission window: 0x00
RX packet length: 0
TX packet length: 0
Air mode: CVSD (0x02)
< HCI Command: Setup Synchrono.. (0x01|0x0028) plen 17 #3417 [hci0]
Handle: 3
Transmit bandwidth: 8000
Receive bandwidth: 8000
Max latency: 7
Setting: 0x0060
Input Coding: Linear
Input Data Format: 2's complement
Input Sample Size: 16-bit
# of bits padding at MSB: 0
Air Coding Format: CVSD
Retransmission effort: Optimize for power consumption (0x01)
Packet type: 0x03c8
EV3 may be used
2-EV3 may not be used
3-EV3 may not be used
2-EV5 may not be used
3-EV5 may not be used
> HCI Event: Command Status (0x0f) plen 4 #3419 [hci0]
Setup Synchronous Connection (0x01|0x0028) ncmd 1
Status: Success (0x00)
> HCI Event: Synchronous Connect Comp.. (0x2c) plen 17 #3426 [hci0]
Status: Unspecified Error (0x1f)
Handle: 4
Address: 14:3F:A6:47:56:15 (OUI 14-3F-A6)
Link type: eSCO (0x02)
Transmission interval: 0x00
Retransmission window: 0x00
RX packet length: 0
TX packet length: 0
Air mode: CVSD (0x02)
< HCI Command: Setup Synchrono.. (0x01|0x0028) plen 17 #3427 [hci0]
Handle: 3
Transmit bandwidth: 8000
Receive bandwidth: 8000
Max latency: 65535
Setting: 0x0060
Input Coding: Linear
Input Data Format: 2's complement
Input Sample Size: 16-bit
# of bits padding at MSB: 0
Air Coding Format: CVSD
Retransmission effort: Optimize for power consumption (0x01)
Packet type: 0x03c4
HV3 may be used
2-EV3 may not be used
3-EV3 may not be used
2-EV5 may not be used
3-EV5 may not be used
> HCI Event: Command Status (0x0f) plen 4 #3428 [hci0]
Setup Synchronous Connection (0x01|0x0028) ncmd 1
Status: Success (0x00)
> HCI Event: Synchronous Connect Comp.. (0x2c) plen 17 #3429 [hci0]
Status: Invalid HCI Command Parameters (0x12)
Handle: 0
Address: 14:3F:A6:47:56:15 (OUI 14-3F-A6)
Link type: SCO (0x00)
Transmission interval: 0x00
Retransmission window: 0x00
RX packet length: 0
TX packet length: 0
Air mode: u-law log (0x00)
Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
Tested-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
---
net/bluetooth/hci_conn.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 7829433d54c1..2627d5ac15d6 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -45,8 +45,8 @@ static const struct sco_param esco_param_cvsd[] = {
{ EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a, 0x01 }, /* S3 */
{ EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007, 0x01 }, /* S2 */
{ EDR_ESCO_MASK | ESCO_EV3, 0x0007, 0x01 }, /* S1 */
- { EDR_ESCO_MASK | ESCO_HV3, 0xffff, 0x01 }, /* D1 */
- { EDR_ESCO_MASK | ESCO_HV1, 0xffff, 0x01 }, /* D0 */
+ { EDR_ESCO_MASK | ESCO_HV3, 0xffff, 0xff }, /* D1 */
+ { EDR_ESCO_MASK | ESCO_HV1, 0xffff, 0xff }, /* D0 */
};
static const struct sco_param sco_param_cvsd[] = {
--
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