[PW_SID:1134176] Add support for Shorter Connection Interval (SCI) by BluezTestBot · Pull Request #2347 · bluez/bluez

BluezTestBot · 2026-07-24T20:00:50Z

From: Luiz Augusto von Dentz luiz.von.dentz@intel.com

Add support for discovering and reading HIDS 1.1 SCI (Subrated
Connection Interval) characteristics:

HID SCI Mode (0x2c39)
HID SCI Information (0x2c3a)

When the HID Information flags indicate SCI is supported (bit 2),
the SCI Mode and SCI Information characteristics are read after
the HID Information is obtained.

profiles/input/hog-lib.c | 106 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 105 insertions(+), 1 deletion(-)

Add support for discovering and reading HIDS 1.1 SCI (Subrated Connection Interval) characteristics: - HID SCI Mode (0x2c39) - HID SCI Information (0x2c3a) When the HID Information flags indicate SCI is supported (bit 2), the SCI Mode and SCI Information characteristics are read after the HID Information is obtained.

Add BTDEV_TYPE_BREDRLE62 device type with support for Shorter Connection Interval (SCI) feature from Bluetooth 6.2 spec: - LE Connection Rate Request (0x20a1) - LE Set Default Rate Parameters (0x20a2) - LE Read Minimum Supported Connection Interval (0x20a3) - LE Connection Rate Change event (0x37) - Shorter Connection Intervals feature bits

…rate Add the Shorter Connection Interval setting bit (25) to indicate controller support for SCI feature. Add the Load Connection Subrate command (0x005C) which allows loading connection subrate parameters for devices that support shorter connection intervals as defined in Bluetooth 6.2.

Add HCIEMU_TYPE_BREDRLE62 device type for testing Bluetooth 6.2 features and add test cases: - Set Low Energy on 6.2 - SCI Setting: verifies that the SCI setting bit (25) is reported in supported/current settings for a 6.2 controller. - Load Connection Subrate - Invalid Params 1: verifies invalid parameters are rejected. - Load Connection Subrate - Success 1: verifies loading valid connection subrate parameters succeeds.

Implement load_conn_subrate() to load per-device connection subrate parameters via the new MGMT_OP_LOAD_CONN_SUBRATE command. Parameters are read from the [ConnectionSubrate] section of device info files and sent to the kernel when the SCI setting is supported. The subrate parameters include connection interval range, subrate factor range, max latency, continuation number, and supervision timeout as defined in the Bluetooth 6.2 SCI feature.

Add decoding support for the new MGMT_OP_LOAD_CONN_SUBRATE (0x005C) command, the MGMT_EV_CONN_SUBRATE (0x0033) event and the Shorter Connection Interval setting bit (25) to btmon.

Document the [ConnectionSubrate] group in the device info file which stores per-device connection subrate parameters for the SCI feature.

Add conn-subrate command to load connection subrate parameters for a device via MGMT_OP_LOAD_CONN_SUBRATE. Usage: conn-subrate [-t type] <address> <min_interval> <max_interval> \ <subrate_min> <subrate_max> <max_latency> \ <cont_num> <supv_timeout>

Add Load Connection Subrate test cases using the recommended connection subrate parameters from the HOGP v1.2 specification for each of the four HID modes: - Fast: interval 1.25-5 ms, latency 0, subrate 1-4, cont_num 3 - Default: interval 7.5-15 ms, latency 0, subrate 1-4, cont_num 0 - Low Power: interval 7.5-15 ms, latency 100, subrate 1-4, cont_num 0 - Full Range: interval 1.25-15 ms, latency 0, subrate 1-4, cont_num 1 Supervision timeouts are computed as (1 + Peripheral Latency) * Subrate Max * Connection Interval Max * 2 per the spec.

Add L2CAP LE client connection tests that load Connection Subrate parameters (via MGMT_OP_LOAD_CONN_SUBRATE) before establishing the connection, using the HOGP v1.2 recommended values for each of the four HID SCI modes: - Fast: interval 1.25-5 ms, latency 0, subrate 1-4, cont_num 3 - Default: interval 7.5-15 ms, latency 0, subrate 1-4, cont_num 0 - Low Power: interval 7.5-15 ms, latency 100, subrate 1-4, cont_num 0 - Full Range: interval 1.25-15 ms, latency 0, subrate 1-4, cont_num 1 Add the test_l2cap_le_62 macro (HCIEMU_TYPE_BREDRLE62) since SCI requires a 6.2 controller. The subrate parameters are loaded with the client's runtime bdaddr during setup_powered_client before the outgoing LE connection is initiated.

Add bthost_le_conn_rate() to send the LE Connection Rate Request (0x20a1) command for a given connection handle. Also handle the LE Connection Rate Change event (0x37). This allows testing a peripheral (server) handling of the Shorter Connection Interval feature by having the emulated central initiate the connection rate request on connect.

Add L2CAP LE server connection tests that exercise the peripheral side of the Shorter Connection Interval feature. The emulated client (central) is configured via bthost_le_conn_rate() to send an LE Connection Rate Request once connected, using the HOGP v1.2 recommended values for each of the four HID SCI modes (Fast, Default, Low Power, Full Range).

codacy-production · 2026-07-24T20:01:37Z

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 duplication

Metric Results

Duplication 0

View in Codacy

_{NEW Get contextual insights on your PRs based on Codacy's metrics, along with PR and Jira context, without leaving GitHub. Enable AI reviewer}
_{TIP This summary will be updated as you push new changes.}

BluezTestBot · 2026-07-24T20:01:51Z

CheckPatch
Desc: Run checkpatch.pl script
Duration: 3.79 seconds
Result: FAIL
Output:

[BlueZ,v1,02/12] emulator/btdev: Add emulation support for HIDS 1.1 SCI commands
WARNING:PREFER_DEFINED_ATTRIBUTE_MACRO: Prefer __packed over __attribute__((packed))
#173: FILE: emulator/btdev.c:8015:
+	} __attribute__ ((packed)) pdu;

WARNING:LONG_LINE_COMMENT: line length of 81 exceeds 80 columns
#210: FILE: emulator/btdev.c:8052:
+	btdev->commands[48] |= BIT(7);	/* LE Read Min Supported Conn Interval */

/github/workspace/src/patch/14709597.patch total: 0 errors, 2 warnings, 172 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/patch/14709597.patch has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.


[BlueZ,v1,10/12] l2cap-tester: Add SCI mode tests for LE client connections
WARNING:PREFER_DEFINED_ATTRIBUTE_MACRO: Prefer __packed over __attribute__((packed))
#247: FILE: tools/l2cap-tester.c:1607:
+		} __attribute__((packed)) load;

/github/workspace/src/patch/14709606.patch total: 0 errors, 1 warnings, 166 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/patch/14709606.patch has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.

BluezTestBot · 2026-07-24T20:01:56Z

GitLint
Desc: Run gitlint
Duration: 2.99 seconds
Result: FAIL
Output:

[BlueZ,v1,01/12] input/hog-lib: Add discovery support for HIDS 1.1 SCI attributes

1: T1 Title exceeds max length (81>80): "[BlueZ,v1,01/12] input/hog-lib: Add discovery support for HIDS 1.1 SCI attributes"
[BlueZ,v1,03/12] mgmt: Add Shorter Connection Interval setting and Load Connection Subrate

1: T1 Title exceeds max length (90>80): "[BlueZ,v1,03/12] mgmt: Add Shorter Connection Interval setting and Load Connection Subrate"
[BlueZ,v1,04/12] mgmt-tester: Add tests for SCI setting and Load Connection Subrate

1: T1 Title exceeds max length (83>80): "[BlueZ,v1,04/12] mgmt-tester: Add tests for SCI setting and Load Connection Subrate"
[BlueZ,v1,06/12] monitor: Add decoding for Load Connection Subrate, SCI setting and event

1: T1 Title exceeds max length (89>80): "[BlueZ,v1,06/12] monitor: Add decoding for Load Connection Subrate, SCI setting and event"

BluezTestBot · 2026-07-24T20:02:13Z

BuildEll
Desc: Build and Install ELL
Duration: 15.82 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:09:52Z

BluezMake
Desc: Build BlueZ
Duration: 456.61 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:10:14Z

MakeCheck
Desc: Run Bluez Make Check
Duration: 18.51 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:12:18Z

MakeDistcheck
Desc: Run Bluez Make Distcheck
Duration: 121.29 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:15:14Z

CheckValgrind
Desc: Run Bluez Make Check with Valgrind
Duration: 172.27 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:19:04Z

CheckSmatch
Desc: Run smatch tool with source
Duration: 228.67 seconds
Result: WARNING
Output:

emulator/btdev.c:478:29: warning: Variable length array is used.monitor/packet.c:2002:26: warning: Variable length array is used.monitor/packet.c: note: in included file:monitor/bt.h:3924:52: warning: array of flexible structuresmonitor/bt.h:3912:40: warning: array of flexible structuresemulator/bthost.c:703:28: warning: Variable length array is used.emulator/bthost.c:704:32: warning: Variable length array is used.emulator/bthost.c:944:28: warning: Variable length array is used.emulator/bthost.c:978:28: warning: Variable length array is used.emulator/bthost.c:979:32: warning: Variable length array is used.

BluezTestBot · 2026-07-24T20:20:21Z

bluezmakeextell
Desc: Build Bluez with External ELL
Duration: 73.20 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:29:56Z

IncrementalBuild
Desc: Incremental build with the patches in the series
Duration: 571.48 seconds
Result: PASS

BluezTestBot · 2026-07-24T20:41:13Z

ScanBuild
Desc: Run Scan Build
Duration: 675.72 seconds
Result: PASS

codacy-production · 2026-07-25T03:34:51Z

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 duplication

Metric Results

Duplication 0

View in Codacy

_{NEW Get contextual insights on your PRs based on Codacy's metrics, along with PR and Jira context, without leaving GitHub. Enable AI reviewer}
_{TIP This summary will be updated as you push new changes.}

Vudentz added 12 commits July 24, 2026 20:00

monitor: Add decoding for Load Connection Subrate, SCI setting and event

1957f90

Add decoding support for the new MGMT_OP_LOAD_CONN_SUBRATE (0x005C) command, the MGMT_EV_CONN_SUBRATE (0x0033) event and the Shorter Connection Interval setting bit (25) to btmon.

doc: Document ConnectionSubrate storage format

86c95a5

Document the [ConnectionSubrate] group in the device info file which stores per-device connection subrate parameters for the SCI feature.

client/mgmt: Add conn-subrate command

1368303

Add conn-subrate command to load connection subrate parameters for a device via MGMT_OP_LOAD_CONN_SUBRATE. Usage: conn-subrate [-t type] <address> <min_interval> <max_interval> \ <subrate_min> <subrate_max> <max_latency> \ <cont_num> <supv_timeout>

BluezTestBot added area:client area:daemon area:emulator area:lib area:monitor area:profiles-input area:tools labels Jul 24, 2026

Uh oh!

Conversation

BluezTestBot commented Jul 24, 2026

When the HID Information flags indicate SCI is supported (bit 2), the SCI Mode and SCI Information characteristics are read after the HID Information is obtained.

Uh oh!

codacy-production Bot commented Jul 24, 2026

Up to standards ✅

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

BluezTestBot commented Jul 24, 2026

Uh oh!

codacy-production Bot commented Jul 25, 2026

Up to standards ✅

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

When the HID Information flags indicate SCI is supported (bit 2),
the SCI Mode and SCI Information characteristics are read after
the HID Information is obtained.