Hi Andrei, * Emeltchenko Andrei <Andrei.Emeltchenko.news@xxxxxxxxx> [2011-01-03 11:14:36 +0200]: > From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx> > > Modification of Nick Pelly <npelly@xxxxxxxxxx> patch. > > With Bluetooth 2.1 ACL packets can be flushable or non-flushable. This commit > makes ACL data packets non-flushable by default on compatible chipsets, and > adds the BT_FLUSHABLE socket option to explicitly request flushable ACL > data packets for a given L2CAP socket. This is useful for A2DP data which can > be safely discarded if it can not be delivered within a short time (while > other ACL data should not be discarded). > > Note that making ACL data flushable has no effect unless the automatic flush > timeout for that ACL link is changed from its default of 0 (infinite). > > Default packet types (for compatible chipsets): > Frame 34: 13 bytes on wire (104 bits), 13 bytes captured (104 bits) > Bluetooth HCI H4 > Bluetooth HCI ACL Packet > .... 0000 0000 0010 = Connection Handle: 0x0002 > ..00 .... .... .... = PB Flag: First Non-automatically Flushable Packet (0) > 00.. .... .... .... = BC Flag: Point-To-Point (0) > Data Total Length: 8 > Bluetooth L2CAP Packet > > After setting BT_FLUSHABLE > (sock.setsockopt(274 /*SOL_BLUETOOTH*/, 8 /* BT_FLUSHABLE */, 1 /* flush */)) > Frame 34: 13 bytes on wire (104 bits), 13 bytes captured (104 bits) > Bluetooth HCI H4 > Bluetooth HCI ACL Packet > .... 0000 0000 0010 = Connection Handle: 0x0002 > ..10 .... .... .... = PB Flag: First Automatically Flushable Packet (2) > 00.. .... .... .... = BC Flag: Point-To-Point (0) > Data Total Length: 8 > Bluetooth L2CAP Packet > > Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx> > --- > include/net/bluetooth/bluetooth.h | 5 +++ > include/net/bluetooth/hci.h | 2 + > include/net/bluetooth/hci_core.h | 1 + > include/net/bluetooth/l2cap.h | 1 + > net/bluetooth/hci_core.c | 7 +++- > net/bluetooth/l2cap.c | 59 ++++++++++++++++++++++++++++++++++-- > 6 files changed, 69 insertions(+), 6 deletions(-) Patch has been applied to bluetooth-next-2.6. Thanks. -- Gustavo F. Padovan http://profusion.mobi -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
