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| H A D | l2cap_core.c | 96298f64 Wed Mar 11 23:35:27 CDT 2020 Howard Chung <howardchung@google.com> Bluetooth: L2CAP: handle l2cap config request during open state
According to Core Spec Version 5.2 | Vol 3, Part A 6.1.5,
the incoming L2CAP_ConfigReq should be handled during
OPEN state.
The section below shows the btmon trace when running
L2CAP/COS/CFD/BV-12-C before and after this change.
=== Before ===
...
> ACL Data RX: Handle 256 flags 0x02 dlen 12 #22
L2CAP: Connection Request (0x02) ident 2 len 4
PSM: 1 (0x0001)
Source CID: 65
< ACL Data TX: Handle 256 flags 0x00 dlen 16 #23
L2CAP: Connection Response (0x03) ident 2 len 8
Destination CID: 64
Source CID: 65
Result: Connection successful (0x0000)
Status: No further information available (0x0000)
< ACL Data TX: Handle 256 flags 0x00 dlen 12 #24
L2CAP: Configure Request (0x04) ident 2 len 4
Destination CID: 65
Flags: 0x0000
> HCI Event: Number of Completed Packets (0x13) plen 5 #25
Num handles: 1
Handle: 256
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 #26
Num handles: 1
Handle: 256
Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #27
L2CAP: Configure Request (0x04) ident 3 len 8
Destination CID: 64
Flags: 0x0000
Option: Unknown (0x10) [hint]
01 00 ..
< ACL Data TX: Handle 256 flags 0x00 dlen 18 #28
L2CAP: Configure Response (0x05) ident 3 len 10
Source CID: 65
Flags: 0x0000
Result: Success (0x0000)
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 672
> HCI Event: Number of Completed Packets (0x13) plen 5 #29
Num handles: 1
Handle: 256
Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #30
L2CAP: Configure Response (0x05) ident 2 len 6
Source CID: 64
Flags: 0x0000
Result: Success (0x0000)
> ACL Data RX: Handle 256 flags 0x02 dlen 20 #31
L2CAP: Configure Request (0x04) ident 3 len 12
Destination CID: 64
Flags: 0x0000
Option: Unknown (0x10) [hint]
01 00 91 02 11 11 ......
< ACL Data TX: Handle 256 flags 0x00 dlen 14 #32
L2CAP: Command Reject (0x01) ident 3 len 6
Reason: Invalid CID in request (0x0002)
Destination CID: 64
Source CID: 65
> HCI Event: Number of Completed Packets (0x13) plen 5 #33
Num handles: 1
Handle: 256
Count: 1
...
=== After ===
...
> ACL Data RX: Handle 256 flags 0x02 dlen 12 #22
L2CAP: Connection Request (0x02) ident 2 len 4
PSM: 1 (0x0001)
Source CID: 65
< ACL Data TX: Handle 256 flags 0x00 dlen 16 #23
L2CAP: Connection Response (0x03) ident 2 len 8
Destination CID: 64
Source CID: 65
Result: Connection successful (0x0000)
Status: No further information available (0x0000)
< ACL Data TX: Handle 256 flags 0x00 dlen 12 #24
L2CAP: Configure Request (0x04) ident 2 len 4
Destination CID: 65
Flags: 0x0000
> HCI Event: Number of Completed Packets (0x13) plen 5 #25
Num handles: 1
Handle: 256
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 #26
Num handles: 1
Handle: 256
Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 16 #27
L2CAP: Configure Request (0x04) ident 3 len 8
Destination CID: 64
Flags: 0x0000
Option: Unknown (0x10) [hint]
01 00 ..
< ACL Data TX: Handle 256 flags 0x00 dlen 18 #28
L2CAP: Configure Response (0x05) ident 3 len 10
Source CID: 65
Flags: 0x0000
Result: Success (0x0000)
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 672
> HCI Event: Number of Completed Packets (0x13) plen 5 #29
Num handles: 1
Handle: 256
Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 14 #30
L2CAP: Configure Response (0x05) ident 2 len 6
Source CID: 64
Flags: 0x0000
Result: Success (0x0000)
> ACL Data RX: Handle 256 flags 0x02 dlen 20 #31
L2CAP: Configure Request (0x04) ident 3 len 12
Destination CID: 64
Flags: 0x0000
Option: Unknown (0x10) [hint]
01 00 91 02 11 11 .....
< ACL Data TX: Handle 256 flags 0x00 dlen 18 #32
L2CAP: Configure Response (0x05) ident 3 len 10
Source CID: 65
Flags: 0x0000
Result: Success (0x0000)
Option: Maximum Transmission Unit (0x01) [mandatory]
MTU: 672
< ACL Data TX: Handle 256 flags 0x00 dlen 12 #33
L2CAP: Configure Request (0x04) ident 3 len 4
Destination CID: 65
Flags: 0x0000
> HCI Event: Number of Completed Packets (0x13) plen 5 #34
Num handles: 1
Handle: 256
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 #35
Num handles: 1
Handle: 256
Count: 1
...
Signed-off-by: Howard Chung <howardchung@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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