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Bluetooth: Add support for FCS option to L2CAP

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Implement CRC16 check for L2CAP packets. FCS is used by Streaming Mode and
Enhanced Retransmission Mode and is a extra check for the packet content.

Using CRC16 is the default, L2CAP won't use FCS only when both side send
a "No FCS" request.

Initially based on a patch from Nathan Holstein <nathan@lampreynetworks.com>

Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Gustavo F. Padovan
2009-08-20 22:26:02 -03:00
committed by Marcel Holtmann
parent 6840ed0770
commit fcc203c30d
2 changed files with 97 additions and 6 deletions
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2
include/net/bluetooth/l2cap.h
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@@ -54,6 +54,7 @@ struct l2cap_options {
__u16 imtu;
__u16 flush_to;
__u8 mode;
__u8 fcs;
};
#define L2CAP_CONNINFO 0x02
@@ -348,6 +349,7 @@ struct l2cap_pinfo {
#define L2CAP_CONF_MTU_DONE 0x08
#define L2CAP_CONF_MODE_DONE 0x10
#define L2CAP_CONF_CONNECT_PEND 0x20
#define L2CAP_CONF_NO_FCS_RECV 0x40
#define L2CAP_CONF_STATE2_DEVICE 0x80
#define L2CAP_CONF_MAX_CONF_REQ 2