[bluez/bluez] 6b4c21: monitor: Add L2CAP channel details to analyze output

[bluez/bluez] 6b4c21: monitor: Add L2CAP channel details to analyze output

[hadess]

  Branch: refs/heads/master
  Home:   https://github.com/bluez/bluez
  Commit: 6b4c21721c80ef09da17656920777a4f1a9bf293
      https://github.com/bluez/bluez/commit/6b4c21721c80ef09da17656920777a4f1a9bf293
  Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
  Date:   2026-04-15 (Wed, 15 Apr 2026)

  Changed paths:
    M monitor/analyze.c

  Log Message:
  -----------
  monitor: Add L2CAP channel details to analyze output

Enhance btmon analyze mode to display richer per-channel information:

- Add MTU, MPS, and mode fields to struct l2cap_chan
- Parse Configure Request/Response options for BR/EDR channels to
  extract MTU (option 0x01) and mode (option 0x04)
- Add l2cap_le_sig() to parse LE signaling (CID 5) for LE Credit
  Based Connection Request/Response and Enhanced Credit Connection
  Request, extracting PSM, MTU, MPS, and mode
- Display fixed channel names (ATT, L2CAP Signaling, SMP) for CID <= 7
- Show PSM in both decimal and hex format
- Print mode, MTU, and MPS for dynamic channels


  Commit: ebeceecd3ccb823d46427a975563987242eaa6f5
      https://github.com/bluez/bluez/commit/ebeceecd3ccb823d46427a975563987242eaa6f5
  Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
  Date:   2026-04-15 (Wed, 15 Apr 2026)

  Changed paths:
    M monitor/analyze.c

  Log Message:
  -----------
  monitor: Use wall-clock duration for throughput and add min/max speed

The previous speed calculation used the sum of per-packet latencies as
the denominator.  For TX, each latency measures the time from command
submission to completion event -- when multiple packets are in-flight
simultaneously these overlap, making the sum much larger than wall-clock
time and deflating the reported speed.  For RX the inter-arrival sum
roughly equals wall-clock time.  This asymmetry caused the same data
stream to report vastly different speeds depending on direction.

Fix by computing speed from wall-clock duration (last packet timestamp
minus first packet timestamp), which gives consistent results regardless
of direction.  Also add 1-second windowed throughput tracking to report
min and max speed alongside the average.


  Commit: f360d9e4428dde40de4ff6d33ef178752e13fc1a
      https://github.com/bluez/bluez/commit/f360d9e4428dde40de4ff6d33ef178752e13fc1a
  Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
  Date:   2026-04-15 (Wed, 15 Apr 2026)

  Changed paths:
    M doc/btmon-l2cap.rst

  Log Message:
  -----------
  doc: Add throughput estimation section to btmon-l2cap.rst

Document the throughput statistics reported by btmon analyze mode,
including speed calculation methodology, channel details (PSM, mode,
MTU, MPS), and caveats about inter-packet latency vs wall-clock time.
Also document the windowed throughput approach used by btsnoop-analyzer.


  Commit: 590bed15fbaf7be93f5121fcdaf12992f234df13
      https://github.com/bluez/bluez/commit/590bed15fbaf7be93f5121fcdaf12992f234df13
  Author: Bastien Nocera <hadess@hadess.net>
  Date:   2026-04-16 (Thu, 16 Apr 2026)

  Changed paths:
    M Makefile.am
    M doc/btmon.rst

  Log Message:
  -----------
  doc: Add missing btmon-cs doc to btmon.rst


Compare: https://github.com/bluez/bluez/compare/510623fb53b5...590bed15fbaf

To unsubscribe from these emails, change your notification settings at https://github.com/bluez/bluez/settings/notifications