From: Johan Hedberg Date: Thu, 28 Jun 2012 10:44:30 +0000 (+0300) Subject: Bluetooth: Change page scan interval in fast connectable mode X-Git-Tag: v3.6-rc1~125^2~57^2~2^2~18 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=83ce9a06b5307c8d759ddd8e4f49e2495fb321f7;p=linux.git Bluetooth: Change page scan interval in fast connectable mode This patch is based on a user space (hciops) patch which never made it upstream but does make sense to include in the mgmt part of the kernel. (User space) commit message from Dmitriy Paliy: " Page scan interval in fast connectable mode is changed from 22.5 msec to 160 msec to perform less aggressive page scanning. This is done accordingly to controller vendor recommendation. Primary concern is that current parameters 22.5 interval, 11.25 window, and interleaved scanning occupy whole radio bandwidth. Changing interval to 160 msec should be sufficient for both speeding up connection establishment and leaving space for other activities, like inquiry scan, e.g. " Signed-off-by: Johan Hedberg Signed-off-by: Gustavo Padovan --- diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 0475f376ebfe..ad6613d17ca6 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -2596,8 +2596,8 @@ static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev, if (cp->val) { type = PAGE_SCAN_TYPE_INTERLACED; - /* 22.5 msec page scan interval */ - acp.interval = __constant_cpu_to_le16(0x0024); + /* 160 msec page scan interval */ + acp.interval = __constant_cpu_to_le16(0x0100); } else { type = PAGE_SCAN_TYPE_STANDARD; /* default */