From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx> Implementation of EFS based upon series of patches sent upstream in Aug 2010 by Haijun Liu. http://marc.info/?a=128277503500005&r=1&w=2 Changes: * RFC: initial release * RFCv2: rebase & take care about comments: - use flag in l2cap_chan instead of variable - move channel init out from parse_conf_req - other style fixes * PATCHv1: support only Best Effort channels for now. * PATCHv2: disable_flowspec -> enable_hs, style fixes * PATCHv3: rebase, split functionality to appropriate patches, taking comments from ML. 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 (6): Bluetooth: EFS: definitions and headers Bluetooth: EFS: assign default values in chan add Bluetooth: EFS: add efs option in L2CAP conf req Bluetooth: EFS: parse L2CAP config request Bluetooth: EFS: parse L2CAP config response Bluetooth: EFS: implement L2CAP config pending state include/net/bluetooth/l2cap.h | 38 +++++++++ net/bluetooth/l2cap_core.c | 167 ++++++++++++++++++++++++++++++++++++++++- 2 files changed, 203 insertions(+), 2 deletions(-) -- 1.7.4.1 -- 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
