El lun, 20-09-2010 a las 21:49 +0300, Johan Hedberg escribiÃ: > Hi, > > On Mon, Sep 20, 2010, Pacho Ramos wrote: > > Reporter found that the problem with his dongle was introduced in commit > > aee26b30bbc24cde464ba1a557c2b258ddec6432 "Make BtIO default security > > level MEDIUM", he asked here, on upstream mailing list, but didn't get > > any reply clarifying this: > > http://marc.info/?l=linux-bluetooth&m=127893935109510&w=2 > > The important piece of info missing here is an HCI trace of the failure > (i.e. output of hcidump). There was a similar issue reported on IRC a > few days back and the hcidump there revealed a LMP response timeout > after BlueZ issues a HCI_Set_Connection_Encryption command. This would > seem to indicate a bug either in the local adapter or the remote device > (headset). Only an airtrace would really reveal what's going on. > However, I suspect it might be possible to work around this by looking > into possibilities of changing the ordering and timing of when the > kernel sends the encryption request. > > Johan > Sorry for the delay but downstream reporter wasn't able to provide the information sooner. Attached is hcidump output, I hope it helps :-) Thanks a lot
HCI sniffer - Bluetooth packet analyzer ver 1.42
device: hci0 snap_len: 1028 filter: 0xffffffffffffffff
< HCI Command: Create Connection (0x01|0x0005) plen 13
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Link Key Request (0x17) plen 6
< HCI Command: Link Key Request Reply (0x01|0x000b) plen 22
> HCI Event: Command Complete (0x0e) plen 10
> HCI Event: Connect Complete (0x03) plen 11
< HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
> HCI Event: Command Status (0x0f) plen 4
< HCI Command: Remote Name Request (0x01|0x0019) plen 10
> HCI Event: Read Remote Supported Features (0x0b) plen 11
< ACL data: handle 12 flags 0x02 dlen 10
L2CAP(s): Info req: type 2
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Max Slots Change (0x1b) plen 3
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x0000
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 1 scid 0x0040
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0049 scid 0x0040 result 1 status 2
Connection pending - Authorization pending
> HCI Event: Remote Name Req Complete (0x07) plen 255
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0049 scid 0x0040 result 0 status 0
Connection successful
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Config req: dcid 0x0049 flags 0x00 clen 0
> ACL data: handle 12 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
Success
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
MTU 48
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(s): Config rsp: scid 0x0049 flags 0x00 result 0 clen 4
MTU 48
< ACL data: handle 12 flags 0x02 dlen 24
L2CAP(d): cid 0x0049 len 20 [psm 1]
SDP SSA Req: tid 0x0 len 0xf
pat uuid-16 0x111e (Handsfree)
max 65535
aid(s) 0x0000 - 0xffff
cont 00
> HCI Event: Number of Completed Packets (0x13) plen 5
> ACL data: handle 12 flags 0x02 dlen 52
L2CAP(d): cid 0x0040 len 48 [psm 1]
SDP SSA Rsp: tid 0x0 len 0x2b
count 38
cont 02 00 39
< ACL data: handle 12 flags 0x02 dlen 26
L2CAP(d): cid 0x0049 len 22 [psm 1]
SDP SSA Req: tid 0x1 len 0x11
pat uuid-16 0x111e (Handsfree)
max 65535
aid(s) 0x0000 - 0xffff
cont 02 00 39
> ACL data: handle 12 flags 0x02 dlen 52
L2CAP(d): cid 0x0040 len 48 [psm 1]
SDP SSA Rsp: tid 0x1 len 0x2b
count 38
cont 02 00 13
< ACL data: handle 12 flags 0x02 dlen 26
L2CAP(d): cid 0x0049 len 22 [psm 1]
SDP SSA Req: tid 0x2 len 0x11
pat uuid-16 0x111e (Handsfree)
max 65535
aid(s) 0x0000 - 0xffff
cont 02 00 13
> ACL data: handle 12 flags 0x02 dlen 31
L2CAP(d): cid 0x0040 len 27 [psm 1]
SDP SSA Rsp: tid 0x2 len 0x16
count 19
record #0
aid 0x0000 (SrvRecHndl)
uint 0x10002
aid 0x0001 (SrvClassIDList)
< uuid-16 0x111e (Handsfree) uuid-16 0x1203 (Audio) >
aid 0x0004 (ProtocolDescList)
< < uuid-16 0x0100 (L2CAP) > <
uuid-16 0x0003 (RFCOMM) uint 0x1 > >
aid 0x0006 (LangBaseAttrIDList)
< uint 0x656e uint 0x6a uint 0x100 >
aid 0x0009 (BTProfileDescList)
< < uuid-16 0x111e (Handsfree) uint 0x101 > >
aid 0x0100 (SrvName)
str "Hands-Free unit"
aid 0x0311 (SuppFeatures)
uint 0x18
cont 00
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 3 scid 0x0041
> HCI Event: Number of Completed Packets (0x13) plen 5
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x004a scid 0x0041 result 1 status 2
Connection pending - Authorization pending
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x004a scid 0x0041 result 0 status 0
Connection successful
< ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x004a flags 0x00 clen 4
MTU 1013
> ACL data: handle 12 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 0
Success
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
MTU 1013
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(s): Config rsp: scid 0x004a flags 0x00 result 0 clen 4
MTU 1013
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x004a len 4 [psm 3]
RFCOMM(s): SABM: cr 1 dlci 0 pf 1 ilen 0 fcs 0x1c
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0041 len 4 [psm 3]
RFCOMM(s): UA: cr 1 dlci 0 pf 1 ilen 0 fcs 0xd7
< HCI Command: Authentication Requested (0x01|0x0011) plen 2
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Auth Complete (0x06) plen 3
< HCI Command: Set Connection Encryption (0x01|0x0013) plen 3
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Number of Completed Packets (0x13) plen 5
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Disconn req: dcid 0x0049 scid 0x0040
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x004a len 4 [psm 3]
RFCOMM(s): DISC: cr 1 dlci 2 pf 1 ilen 0 fcs 0xb8
> HCI Event: Number of Completed Packets (0x13) plen 5
> HCI Event: Disconn Complete (0x05) plen 4
< HCI Command: Create Connection (0x01|0x0005) plen 13
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Link Key Request (0x17) plen 6
< HCI Command: Link Key Request Reply (0x01|0x000b) plen 22
> HCI Event: Command Complete (0x0e) plen 10
> HCI Event: Connect Complete (0x03) plen 11
< HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
> HCI Event: Max Slots Change (0x1b) plen 3
> HCI Event: Command Status (0x0f) plen 4
< HCI Command: Remote Name Request (0x01|0x0019) plen 10
> HCI Event: Read Remote Supported Features (0x0b) plen 11
< ACL data: handle 11 flags 0x02 dlen 10
L2CAP(s): Info req: type 2
> HCI Event: Command Status (0x0f) plen 4
> ACL data: handle 11 flags 0x02 dlen 16
L2CAP(s): Info rsp: type 2 result 0
Extended feature mask 0x0000
< HCI Command: Authentication Requested (0x01|0x0011) plen 2
> HCI Event: Remote Name Req Complete (0x07) plen 255
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Auth Complete (0x06) plen 3
< HCI Command: Set Connection Encryption (0x01|0x0013) plen 3
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Number of Completed Packets (0x13) plen 5
> HCI Event: Disconn Complete (0x05) plen 4
< HCI Command: Reset (0x03|0x0003) plen 0
> HCI Event: Command Complete (0x0e) plen 4
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