* [bluez/bluez] ccc22a: shared/hci: Add BPF filter for registered events
@ 2026-05-06 13:56 Luiz Augusto von Dentz
0 siblings, 0 replies; only message in thread
From: Luiz Augusto von Dentz @ 2026-05-06 13:56 UTC (permalink / raw)
To: linux-bluetooth
Branch: refs/heads/master
Home: https://github.com/bluez/bluez
Commit: ccc22a9193884ccc3c3cb2b7a7b90100187c20b5
https://github.com/bluez/bluez/commit/ccc22a9193884ccc3c3cb2b7a7b90100187c20b5
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-01 (Fri, 01 May 2026)
Changed paths:
M src/shared/hci.c
Log Message:
-----------
shared/hci: Add BPF filter for registered events
Implement a BPF socket filter in bt_hci_register/bt_hci_unregister that
uses setsockopt(SO_ATTACH_FILTER) to only accept HCI events that have
been registered, plus BT_HCI_EVT_CMD_COMPLETE and BT_HCI_EVT_CMD_STATUS
which are always needed for command response processing.
The filter is rebuilt each time an event is registered or unregistered,
and only applies to non-stream (raw socket) connections.
Assisted-by: Claude:claude-opus-4.6
Commit: 98f7190cf6b9e918943deeacd2f1494c9ca0710c
https://github.com/bluez/bluez/commit/98f7190cf6b9e918943deeacd2f1494c9ca0710c
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-01 (Fri, 01 May 2026)
Changed paths:
M src/shared/hci.c
M src/shared/hci.h
Log Message:
-----------
shared/hci: Add bt_hci_register_subevent for LE Meta events
Add bt_hci_register_subevent/bt_hci_unregister_subevent API that allows
registering for specific LE Meta Event subevents. The BPF filter is
extended to accept BT_HCI_EVT_LE_META_EVENT packets and then check the
subevent byte (offset 4) against registered subevents.
Since bt_hci_register_subevent is only used with BT_HCI_EVT_LE_META_EVENT,
the event parameter is omitted. The subevent list reuses struct evt where
evt->event stores the subevent code.
Assisted-by: Claude:claude-opus-4.6
Commit: 45e1e7ca2243fdea4fb0f31ac56de2e9ee9e9c5b
https://github.com/bluez/bluez/commit/45e1e7ca2243fdea4fb0f31ac56de2e9ee9e9c5b
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-01 (Fri, 01 May 2026)
Changed paths:
M profiles/ranging/rap_hci.c
Log Message:
-----------
ranging/rap_hci: Use bt_hci_register_subevent for LE CS events
Replace the single BT_HCI_EVT_LE_META_EVENT registration and subevent
dispatch table with individual bt_hci_register_subevent calls for each
CS subevent. This enables BPF filtering at the socket level for each
specific subevent and removes the manual subevent dispatch logic.
Event IDs are stored in a struct queue for flexible management.
Assisted-by: Claude:claude-opus-4.6
Commit: 3502f9f51704acf8035b30e748462dd0fbf10be8
https://github.com/bluez/bluez/commit/3502f9f51704acf8035b30e748462dd0fbf10be8
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-01 (Fri, 01 May 2026)
Changed paths:
M tools/hci-tester.c
Log Message:
-----------
hci-tester: Use bt_hci_register_subevent for LE Meta events
Convert all bt_hci_register(BT_HCI_EVT_LE_META_EVENT) calls to use
bt_hci_register_subevent with the specific subevent code. Update
callbacks to work with data that no longer contains the subevent byte
prefix, since bt_hci_register_subevent strips it before dispatch.
Assisted-by: Claude:claude-opus-4.6
Commit: fda84f7004fa4f1173c6482ac19973e1e7891655
https://github.com/bluez/bluez/commit/fda84f7004fa4f1173c6482ac19973e1e7891655
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-04 (Mon, 04 May 2026)
Changed paths:
M monitor/packet.c
Log Message:
-----------
monitor: Add features bits defined in 6.2
This adds features bits defined as per core spec 6.2:
https://www.bluetooth.com/wp-content/uploads/Files/Specification/HTML/Core-62/out/en/low-energy-controller/link-layer-specification.html#UUID-56ada5ed-4ae3-acee-198f-27ead57d86f1
Commit: 79cfd07224ff3e2dc9828bdcb795fc49120da3f3
https://github.com/bluez/bluez/commit/79cfd07224ff3e2dc9828bdcb795fc49120da3f3
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-04 (Mon, 04 May 2026)
Changed paths:
M monitor/bt.h
M monitor/packet.c
Log Message:
-----------
monitor: Add decoding for Short Connection Interval feature
This adds deconding support for SCI related commands, command bits, event
event mask bit and feature bits:
Events:
HCI_LE_Connection_Rate_Change(0x37)
Commands:
HCI_LE_Connection_Rate_Request(0x20a1)
HCI_LE_Set_Default_Rate_Parameters(0x20a2)
HCI_LE_Read_Minimum_Supported_Connection_Interval(0x20a3)
Commit: 6aa7f5b4e0224e8b6668d7b9787d11d443ec72fd
https://github.com/bluez/bluez/commit/6aa7f5b4e0224e8b6668d7b9787d11d443ec72fd
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-05 (Tue, 05 May 2026)
Changed paths:
M emulator/hciemu.c
Log Message:
-----------
hciemu: Fix crash if hciemu_client_new return NULL
The following crahs can be observed if hciemu_client_new fails:
Invalid read of size 8
at 0x12DA79: queue_get_entries (queue.c:356)
by 0x118434: hciemu_get_client (hciemu.c:277)
by 0x1184A3: hciemu_client_get_host (hciemu.c:301)
by 0x11536B: setup_powered_common (l2cap-tester.c:1452)
by 0x11568E: setup_powered_client (l2cap-tester.c:1491)
by 0x1324C6: setup_callback (tester.c:500)
by 0x48A304D: g_main_context_dispatch (in /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.6)
by 0x48A33FF: ??? (in /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.6)
by 0x48A36F2: g_main_loop_run (in /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.6)
by 0x133868: mainloop_run (mainloop-glib.c:65)
by 0x133C9F: mainloop_run_with_signal (mainloop-notify.c:196)
by 0x13325F: tester_run (tester.c:1085)
Address 0x4c1e388 is 8 bytes inside a block of size 32 free'd
at 0x483CA3F: free (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
by 0x1187BF: hciemu_new_num (hciemu.c:437)
Commit: d0d42d034f9f7be3e743f885366becb758f19bde
https://github.com/bluez/bluez/commit/d0d42d034f9f7be3e743f885366becb758f19bde
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-05 (Tue, 05 May 2026)
Changed paths:
M emulator/vhci.c
Log Message:
-----------
emulator/vhci: Add debug messages to error paths
Add debug_callback, debug_destroy and debug_data fields to struct vhci
so vhci_set_debug stores the callback locally in addition to passing it
to btdev. Introduce a variadic vhci_debug() helper using util_debug_va
and add debug messages to the following error paths:
- vhci_write_callback: failed io_send
- vhci_read_callback: failed read
- vhci_debugfs_write: failed open and failed write
Commit: d4c965eec4d391d835b8884aed6f36d343ff73af
https://github.com/bluez/bluez/commit/d4c965eec4d391d835b8884aed6f36d343ff73af
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-05 (Tue, 05 May 2026)
Changed paths:
M emulator/hciemu.c
Log Message:
-----------
emulator/hciemu: Add debug messages to error paths
Introduce a variadic hciemu_debug() helper using util_debug_va and add
debug messages to the following error paths:
- create_vhci: failed to open vhci
- hciemu_client_new: failed to create btdev, bthost, or socketpair
Commit: 164941a6c145b1ad9590faadc547de60bda4f020
https://github.com/bluez/bluez/commit/164941a6c145b1ad9590faadc547de60bda4f020
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-05 (Tue, 05 May 2026)
Changed paths:
M tools/gap-tester.c
Log Message:
-----------
tools/gap-tester: Enable hciemu debug output
Add print_debug callback and call hciemu_set_debug when debug output is
enabled so that hciemu error paths are visible during test runs.
Commit: e51115ccd4dfd8ea9dc7662240c20d7703464a45
https://github.com/bluez/bluez/commit/e51115ccd4dfd8ea9dc7662240c20d7703464a45
Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: 2026-05-05 (Tue, 05 May 2026)
Changed paths:
M tools/userchan-tester.c
Log Message:
-----------
tools/userchan-tester: Enable hciemu debug output
Call hciemu_set_debug when debug output is enabled so that hciemu error
paths are visible during test runs.
Compare: https://github.com/bluez/bluez/compare/31e4fb1498f4...e51115ccd4df
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