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From: Luiz Augusto von Dentz <noreply@github.com>
To: linux-bluetooth@vger.kernel.org
Subject: [bluez/bluez] 032ea0: monitor: Decode Intel DDC LE extended features
Date: Thu, 30 Jul 2026 12:01:00 -0700	[thread overview]
Message-ID: <bluez/bluez/push/refs/heads/1137629/000000-032ea0@github.com> (raw)

  Branch: refs/heads/1137629
  Home:   https://github.com/bluez/bluez
  Commit: 032ea05b41638c34a105bc2665fb495ec25faa82
      https://github.com/bluez/bluez/commit/032ea05b41638c34a105bc2665fb495ec25faa82
  Author: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
  Date:   2026-07-30 (Thu, 30 Jul 2026)

  Changed paths:
    M monitor/intel.c

  Log Message:
  -----------
  monitor: Decode Intel DDC LE extended features

The Intel DDC Config Write command (0x3f|0x008b) can carry identifier
0x031f which holds the 248 octet LE extended features array, using the
same layout as LE Read All Local Features: page 0 is 8 octets followed
by 10 pages of 24 octets each.

Decode it with the existing LE feature tables instead of dumping raw
hex, and make the parameter loop stop on truncated/padded entries.

Example, setting only the SCI bits on page 1 (bits 8 and 9):

  hcitool cmd 0x3F 0x008B 0xFA 0x1F 0x03 \
      0xFF 0xF9 0x01 0x3F 0xBE 0x00 0x00 0x80 \
      0x00 0x03 0x00 0x00 ... (padding up to 248 octets)

  < HCI Command: Intel DDC Config Write (0x3f|0x008b) plen 251
          Identifier: 0x031f
          Features[0/0][8]:
          ff f9 01 3f be 00 00 80                          ...?....
            LE Encryption
            Connection Parameter Request Procedure
            ...
            LL Extended Feature Set
          Features[1/0][8]:
          00 03 00 00 00 00 00 00                          ........
            Shorter Connection Intervals
            Shorter Connection Intervals (Host Support)
          Features[1/1][8]:
          00 00 00 00 00 00 00 00                          ........
          ...



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                 reply	other threads:[~2026-07-30 19:01 UTC|newest]

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