]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
Bluetooth: use recommended LE connection parameters
authorAnderson Lizardo <anderson.lizardo@openbossa.org>
Wed, 27 Jul 2011 21:40:09 +0000 (18:40 -0300)
committerGustavo F. Padovan <gustavo@padovan.org>
Tue, 27 Sep 2011 21:16:27 +0000 (18:16 -0300)
commit0e8339151fa85cb9b088abfb13e2dd5214a25429
tree4d8216a45e19e025c1f143b5f435ba6446f6fc8d
parent84084a3197a9fdec10fa542c0df11928a784e7fc
Bluetooth: use recommended LE connection parameters

The new connection parameters now match the recommended values for
Proximity and Health Thermometer profiles. The previous values were
ramdomly chosen, and are either too low or too high for most cases.

New values:

Scan Interval: 60 ms
Scan Window: 30 ms
Minimum Connection Interval: 50 ms
Maximum Connection Interval: 70 ms
Supervision Timeout: 420 ms

See "Table 5.2: Recommended Scan Interval and Scan Window Values" and
"Table 5.3: Recommended Connection Interval Values" for both profiles
for details. Note that the "fast connection" parameters were chosen,
because we do not support yet dynamically changing these parameters from
initiator side.

Additionally, the Proximity profile recommends (section "4.4 Alert on
Link Loss"):

"It is recommended that the Link Supervision Timeout (LSTO) is set to 6x
the connection interval."

Minimum_CE_Length and Maximum_CE_Length were also changed from 0x0001 to
0x0000 because they are informational and optional, and old value was
not reflecting reality.

Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
net/bluetooth/hci_conn.c