From: Pascal <pascal@pabr.org>
To: bluez-devel@lists.sourceforge.net
Subject: [Bluez-devel] Increasing HIDP_DEFAULT_MTU ?
Date: Mon, 28 May 2007 18:14:31 +0200 [thread overview]
Message-ID: <f3ev58$iku$1@sea.gmane.org> (raw)
Hi,
I have a Bluetooth HID peripheral which sends 50-byte payloads
on L2CAP psm 19, even though it has accepted a Config req with
MTU 48. As a result, the data never reaches userspace.
Is this a bug in the device ?
Besides, even if the device implemented segmentation with
DATC, a MTU of 48 might be a significant performance penalty
(generating twice as many packets on the radio channel ?).
So would it be appropriate to change
bluez-libs-3.11/include/hidp.h:#define HIDP_DEFAULT_MTU 48
to 672, as recommmended by HID_SPEC_V10 section 7.5.2 ?
Or maybe make it a command-line option for hidd and
bluetoothd-service-input ?
Pascal
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next reply other threads:[~2007-05-28 16:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-28 16:14 Pascal [this message]
2007-05-29 4:04 ` [Bluez-devel] Increasing HIDP_DEFAULT_MTU ? Marcel Holtmann
2007-05-29 22:12 ` Pascal
2007-05-30 7:31 ` Marcel Holtmann
2007-05-30 10:52 ` Pascal
2007-05-30 11:51 ` Marcel Holtmann
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