From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Add basic support for Extended Flow Specification option in L2CAP
Patch series based on patches sent by haijun.liu <haijun.liu@xxxxxxxxxxx> about
one year ago. L2CAP sequence looks like the one below:
(my patches for decoding EFS have been applied to hcidump)
...
< ACL data: handle 1 flags 0x00 dlen 10
L2CAP(s): Info req: type 2
> ACL data: handle 1 flags 0x02 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x00f8
Enhanced Retransmission mode
Streaming mode
FCS Option
Extended Flow Specification
Fixed Channels
< ACL data: handle 1 flags 0x00 dlen 10
L2CAP(s): Info req: type 3
> ACL data: handle 1 flags 0x02 dlen 20
L2CAP(s): Info rsp: type 3 result 0
Fixed channel list
< ACL data: handle 1 flags 0x00 dlen 12
L2CAP(s): Connect req: psm 4113 scid 0x0040
> ACL data: handle 1 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 0
Connection pending - No futher information available
> ACL data: handle 1 flags 0x02 dlen 10
L2CAP(s): Info req: type 2
< ACL data: handle 1 flags 0x00 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x00f8
Enhanced Retransmission mode
Streaming mode
FCS Option
Extended Flow Specification
Fixed Channels
> ACL data: handle 1 flags 0x02 dlen 10
L2CAP(s): Info req: type 3
< ACL data: handle 1 flags 0x00 dlen 20
L2CAP(s): Info rsp: type 3 result 0
Fixed channel list
> ACL data: handle 1 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
Connection successful
< ACL data: handle 1 flags 0x00 dlen 41
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 29
RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 0,
MTo 0, MPS 500)
EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime
0xffffffff, AccLat 0xffffffff, FlushTO 0x0000ffff)
> ACL data: handle 1 flags 0x02 dlen 41
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 29
RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 0, MTo 0,
MPS 1009)
EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
AccLat 0xffffffff, FlushTO 0x0000ffff)
< ACL data: handle 1 flags 0x00 dlen 47
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 4 clen 33
Pending
MTU 672
RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 2000, MTo 12000,
MPS 500)
EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
AccLat 0xffffffff, FlushTO 0x0000ffff)
> ACL data: handle 1 flags 0x02 dlen 47
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 4 clen 33
Pending
MTU 672
RFC 0x03 (Enhanced Retransmission, TxWin 63, MaxTx 3, RTo 2000, MTo 12000,
MPS 500)
EFS (Id 0x01, SerType Best Effort, MaxSDU 0xffff, SDUitime 0xffffffff,
AccLat 0xffffffff, FlushTO 0x0000ffff)
< ACL data: handle 1 flags 0x00 dlen 14
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
Success
> ACL data: handle 1 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
Success
...
< ACL data: handle 1 flags 0x00 dlen 510
L2CAP(d): cid 0x0040 len 506 ctrl 0x4000 fcs 0x5337 [psm 4113]
I-frame: Start (len 672) TxSeq 0 ReqSeq 0
...
Andrei Emeltchenko (7):
Bluetooth: L2CAP extended feature mask update
Bluetooth: EFS: definitions and headers for EFS
Bluetooth: EFS: add disable_flowspec kernel param
Bluetooth: parse EFS in l2cap config request
Bluetooth: parse EFS in l2cap config response
Bluetooth: add EFS option in l2cap conf req
Bluetooth: EFS: parse l2cap config rsp pending
include/net/bluetooth/l2cap.h | 45 +++++++++-
net/bluetooth/l2cap_core.c | 216 ++++++++++++++++++++++++++++++++++++++++-
2 files changed, 256 insertions(+), 5 deletions(-)
--
1.7.4.1
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