From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Process L2CAP Config rsp Pending with FCS Option 0x00 (No FCS)
which is sent by Motorola Windows 7 Bluetooth stack. The trace
is shown below (all other options are skipped).
...
< ACL data: handle 1 flags 0x00 dlen 48
L2CAP(s): Config req: dcid 0x0043 flags 0x00 clen 36
...
FCS Option 0x00 (No FCS)
> ACL data: handle 1 flags 0x02 dlen 48
L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 36
...
FCS Option 0x01 (CRC16 Check)
< ACL data: handle 1 flags 0x00 dlen 47
L2CAP(s): Config rsp: scid 0x0043 flags 0x00 result 4 clen 33
Pending
...
> ACL data: handle 1 flags 0x02 dlen 50
L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 4 clen 36
Pending
...
FCS Option 0x00 (No FCS)
< ACL data: handle 1 flags 0x00 dlen 14
L2CAP(s): Config rsp: scid 0x0043 flags 0x00 result 0 clen 0
Success
> ACL data: handle 1 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 0
Success
...
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
---
net/bluetooth/l2cap_core.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index f10e4be..d30978b 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3429,6 +3429,12 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs),
(unsigned long) &efs);
break;
+
+ case L2CAP_CONF_FCS:
+ if (*result == L2CAP_CONF_PENDING)
+ if (val == L2CAP_FCS_NONE)
+ set_bit(CONF_NO_FCS_RECV, &chan->conf_state);
+ break;
}
}
--
1.7.10.4
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