[PATCH] Bluetooth: mgmt: Fix TLV parameter code type conversion

[PATCH] Bluetooth: mgmt: Fix TLV parameter code type conversion

[Stefan Sørensen]

Use the correct le16 conversion for the TLV type field when adding a
TLV using a u32 data field.

Fixes: afa20d8099ddf ("Bluetooth: mgmt: Add idle_timeout to configurable system parameters")
Signed-off-by: Stefan Sørensen <ssorensen@roku.com>
---
 net/bluetooth/mgmt_config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/mgmt_config.c b/net/bluetooth/mgmt_config.c
index 4ec6c008cb7e6..fdcc752c6f13f 100644
--- a/net/bluetooth/mgmt_config.c
+++ b/net/bluetooth/mgmt_config.c
@@ -37,7 +37,7 @@
 
 #define TLV_SET_U32(_param_code_, _param_name_) \
 	{ \
-		{ cpu_to_le32(_param_code_), sizeof(__u32) }, \
+		{ cpu_to_le16(_param_code_), sizeof(__u32) }, \
 		cpu_to_le32(hdev->_param_name_) \
 	}
 
-- 
2.52.0

Re: [PATCH] Bluetooth: mgmt: Fix TLV parameter code type conversion

[Paul Menzel]

Dear Stefan,


Am 18.12.25 um 13:08 schrieb Stefan Sørensen:
> Use the correct le16 conversion for the TLV type field when adding a
> TLV using a u32 data field.

Why is the correct conversion?

> Fixes: afa20d8099ddf ("Bluetooth: mgmt: Add idle_timeout to configurable system parameters")
> Signed-off-by: Stefan Sørensen <ssorensen@roku.com>
> ---
>   net/bluetooth/mgmt_config.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/bluetooth/mgmt_config.c b/net/bluetooth/mgmt_config.c
> index 4ec6c008cb7e6..fdcc752c6f13f 100644
> --- a/net/bluetooth/mgmt_config.c
> +++ b/net/bluetooth/mgmt_config.c
> @@ -37,7 +37,7 @@
>   
>   #define TLV_SET_U32(_param_code_, _param_name_) \
>   	{ \
> -		{ cpu_to_le32(_param_code_), sizeof(__u32) }, \
> +		{ cpu_to_le16(_param_code_), sizeof(__u32) }, \
>   		cpu_to_le32(hdev->_param_name_) \
>   	}
>   


Kind regards,

Paul

Re: [EXTERNAL] Re: [PATCH] Bluetooth: mgmt: Fix TLV parameter code type conversion

[Stefan Sørensen]

>> Use the correct le16 conversion for the TLV type field when adding a
>> TLV using a u32 data field.
>
>Why is the correct conversion?

This is the TLV element structure:

struct mgmt_tlv {
	/* New members MUST be added within the __struct_group() macro below. */
	__struct_group(mgmt_tlv_hdr, __hdr, __packed,
		__le16 type;
		__u8   length;
	);
	__u8   value[];
} __packed;

Regards,
Stefan

RE: Bluetooth: mgmt: Fix TLV parameter code type conversion

[bluez.test.bot]

[-- Attachment #1: Type: text/plain, Size: 2748 bytes --]

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=1034566

---Test result---

Test Summary:
CheckPatch                    PENDING   0.48 seconds
GitLint                       PENDING   0.33 seconds
SubjectPrefix                 PASS      0.07 seconds
BuildKernel                   PASS      24.46 seconds
CheckAllWarning               PASS      26.47 seconds
CheckSparse                   PASS      29.47 seconds
BuildKernel32                 PASS      23.83 seconds
TestRunnerSetup               PASS      513.51 seconds
TestRunner_l2cap-tester       PASS      25.90 seconds
TestRunner_iso-tester         PASS      65.80 seconds
TestRunner_bnep-tester        PASS      6.32 seconds
TestRunner_mgmt-tester        FAIL      128.17 seconds
TestRunner_rfcomm-tester      PASS      9.56 seconds
TestRunner_sco-tester         FAIL      16.69 seconds
TestRunner_ioctl-tester       PASS      10.17 seconds
TestRunner_mesh-tester        FAIL      11.60 seconds
TestRunner_smp-tester         PASS      9.02 seconds
TestRunner_userchan-tester    PASS      6.65 seconds
IncrementalBuild              PENDING   1.00 seconds

Details
##############################
Test: CheckPatch - PENDING
Desc: Run checkpatch.pl script
Output:

##############################
Test: GitLint - PENDING
Desc: Run gitlint
Output:

##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 494, Passed: 488 (98.8%), Failed: 2, Not Run: 4

Failed Test Cases
Read Exp Feature - Success                           Failed       0.104 seconds
LL Privacy - Set Flags 2 (Enable RL)                 Failed       0.149 seconds
##############################
Test: TestRunner_sco-tester - FAIL
Desc: Run sco-tester with test-runner
Output:
WARNING: possible circular locking dependency detected
BUG: sleeping function called from invalid context at net/core/sock.c:3782
BUG: sleeping function called from invalid context at net/core/sock.c:3782
Total: 30, Passed: 30 (100.0%), Failed: 0, Not Run: 0
##############################
Test: TestRunner_mesh-tester - FAIL
Desc: Run mesh-tester with test-runner
Output:
Total: 10, Passed: 8 (80.0%), Failed: 2, Not Run: 0

Failed Test Cases
Mesh - Send cancel - 1                               Timed out    1.844 seconds
Mesh - Send cancel - 2                               Timed out    1.998 seconds
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



---
Regards,
Linux Bluetooth

Re: [PATCH] Bluetooth: mgmt: Fix TLV parameter code type conversion

[Luiz Augusto von Dentz]

Hi Stefan,

On Thu, Dec 18, 2025 at 7:09 AM Stefan Sørensen <ssorensen@roku.com> wrote:
>
> Use the correct le16 conversion for the TLV type field when adding a
> TLV using a u32 data field.
>
> Fixes: afa20d8099ddf ("Bluetooth: mgmt: Add idle_timeout to configurable system parameters")
> Signed-off-by: Stefan Sørensen <ssorensen@roku.com>
> ---
>  net/bluetooth/mgmt_config.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/bluetooth/mgmt_config.c b/net/bluetooth/mgmt_config.c
> index 4ec6c008cb7e6..fdcc752c6f13f 100644
> --- a/net/bluetooth/mgmt_config.c
> +++ b/net/bluetooth/mgmt_config.c
> @@ -37,7 +37,7 @@
>
>  #define TLV_SET_U32(_param_code_, _param_name_) \
>         { \
> -               { cpu_to_le32(_param_code_), sizeof(__u32) }, \
> +               { cpu_to_le16(_param_code_), sizeof(__u32) }, \
>                 cpu_to_le32(hdev->_param_name_) \
>         }
>
> --
> 2.52.0

Ive fixed up it in place, that said I realized that these macros are
sort of not really helping in my opinion, so we might as well do
something similar to eir_append_data and not use a stack variable
since we might want to exclude the bearer specific configuration if it
is disabled. And the double parsing on set_def_system_config is also
suboptimal, anyway this is nothing you introduced it was just left out
sort of incomplete.

-- 
Luiz Augusto von Dentz