Commit graph

576 commits

Author SHA1 Message Date
Gustavo F. Padovan
c89ad73722 Bluetooth: Fix not returning proper error in SCO
Return 0 in that situation could lead to errors in the caller.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-22 18:23:18 -02:00
Luiz Augusto von Dentz
63ce0900d7 Bluetooth: fix not setting security level when creating a rfcomm session
This cause 'No Bonding' to be used if userspace has not yet been paired
with remote device since the l2cap socket used to create the rfcomm
session does not have any security level set.

Signed-off-by: Luiz Augusto von Dentz <luiz.dentz-von@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:56:10 -02:00
Gustavo F. Padovan
4f8b691c9f Bluetooth: fix endianness conversion in L2CAP
Last commit added a wrong endianness conversion. Fixing that.

Reported-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:56:09 -02:00
steven miao
bfaaeb3ed5 Bluetooth: fix unaligned access to l2cap conf data
In function l2cap_get_conf_opt() and l2cap_add_conf_opt() the address of
opt->val sometimes is not at the edge of 2-bytes/4-bytes, so 2-bytes/4 bytes
access will cause data misalignment exeception.  Use get_unaligned_le16/32
and put_unaligned_le16/32 function to avoid data misalignment execption.

Signed-off-by: steven miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:56:00 -02:00
Johan Hedberg
bdb7524a75 Bluetooth: Fix non-SSP auth request for HIGH security level sockets
When initiating dedicated bonding a L2CAP raw socket with HIGH security
level is used. The kernel is supposed to trigger the authentication
request in this case but this doesn't happen currently for non-SSP
(pre-2.1) devices. The reason is that the authentication request happens
in the remote extended features callback which never gets called for
non-SSP devices. This patch fixes the issue by requesting also
authentiation in the (normal) remote features callback in the case of
non-SSP devices.

This rule is applied only for HIGH security level which might at first
seem unintuitive since on the server socket side MEDIUM is already
enough for authentication. However, for the clients we really want to
prefer the server side to decide the authentication requrement in most
cases, and since most client sockets use MEDIUM it's better to be
avoided on the kernel side for these sockets. The important socket to
request it for is the dedicated bonding one and that socket uses HIGH
security level.

The patch is based on the initial investigation and patch proposal from
Andrei Emeltchenko <endrei.emeltchenko@nokia.com>.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:55:27 -02:00
Randy Dunlap
96c99b473a Bluetooth: fix hidp kconfig dependency warning
Fix kconfig dependency warning to satisfy dependencies:

warning: (BT_HIDP && NET && BT && BT_L2CAP && INPUT || USB_HID && HID_SUPPORT && USB && INPUT) selects HID which has unmet direct dependencies (HID_SUPPORT && INPUT)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-09 00:55:27 -02:00
Linus Torvalds
5f05647dd8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1699 commits)
  bnx2/bnx2x: Unsupported Ethtool operations should return -EINVAL.
  vlan: Calling vlan_hwaccel_do_receive() is always valid.
  tproxy: use the interface primary IP address as a default value for --on-ip
  tproxy: added IPv6 support to the socket match
  cxgb3: function namespace cleanup
  tproxy: added IPv6 support to the TPROXY target
  tproxy: added IPv6 socket lookup function to nf_tproxy_core
  be2net: Changes to use only priority codes allowed by f/w
  tproxy: allow non-local binds of IPv6 sockets if IP_TRANSPARENT is enabled
  tproxy: added tproxy sockopt interface in the IPV6 layer
  tproxy: added udp6_lib_lookup function
  tproxy: added const specifiers to udp lookup functions
  tproxy: split off ipv6 defragmentation to a separate module
  l2tp: small cleanup
  nf_nat: restrict ICMP translation for embedded header
  can: mcp251x: fix generation of error frames
  can: mcp251x: fix endless loop in interrupt handler if CANINTF_MERRF is set
  can-raw: add msg_flags to distinguish local traffic
  9p: client code cleanup
  rds: make local functions/variables static
  ...

Fix up conflicts in net/core/dev.c, drivers/net/pcmcia/smc91c92_cs.c and
drivers/net/wireless/ath/ath9k/debug.c as per David
2010-10-23 11:47:02 -07:00
Alan Cox
0587102cf9 tty: icount changeover for other main devices
Again basically cut and paste

Convert the main driver set to use the hooks for GICOUNT

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22 10:20:05 -07:00
David S. Miller
2198a10b50 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/core/dev.c
2010-10-21 08:43:05 -07:00
Nathan Holstein
d793fe8caa Bluetooth: fix oops in l2cap_connect_req
In error cases when the ACL is insecure or we fail to allocate a new
struct sock, we jump to the "response" label.  If so, "sk" will be
null and the kernel crashes.

Signed-off-by: Nathan Holstein <nathan.holstein@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-17 21:19:19 -02:00
Andrei Emeltchenko
534c92fde7 Bluetooth: clean up rfcomm code
Remove dead code and unused rfcomm thread events

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:53 -03:00
Haijun Liu
ab3e571564 Bluetooth: Update conf_state before send config_req out
Update conf_state with L2CAP_CONF_REQ_SENT before send config_req out in
l2cap_config_req().

Signed-off-by: Haijun Liu <haijun.liu@atheros.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:53 -03:00
Gustavo F. Padovan
0175d629e0 Bluetooth: Use the proper error value from bt_skb_send_alloc()
&err points to the proper error set by bt_skb_send_alloc() when it
fails.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Gustavo F. Padovan
d6b2eb2f89 Bluetooth: make batostr() print in the right order
The Bluetooth core uses the the BD_ADDR in the opposite order from the
human readable order. So we are changing batostr() to print in the
correct order and then removing some baswap(), as they are not needed
anymore.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Gustavo F. Padovan
cb810a189d Bluetooth: remove unused variable from cmtp
A value was attributed to 'src', but no one was using.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Andrei Emeltchenko
aae7fe22a8 Bluetooth: check for l2cap header in start fragment
BLUETOOTH SPECIFICATION Version 4.0 [Vol 3] page 36 mentioned
"Note: Start Fragments always begin with the Basic L2CAP header
of a PDU."

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Andrei Emeltchenko
8979481328 Bluetooth: check L2CAP length in first ACL fragment
Current Bluetooth code assembles fragments of big L2CAP packets
in l2cap_recv_acldata and then checks allowed L2CAP size in
assemled L2CAP packet (pi->imtu < skb->len).

The patch moves allowed L2CAP size check to the early stage when
we receive the first fragment of L2CAP packet. We do not need to
reserve and keep L2CAP fragments for bad packets.

Updated version after comments from Mat Martineau <mathewm@codeaurora.org>
and Gustavo Padovan <padovan@profusion.mobi>.

Trace below is received when using stress tools sending big
fragmented L2CAP packets.
...
[ 1712.798492] swapper: page allocation failure. order:4, mode:0x4020
[ 1712.804809] [<c0031870>] (unwind_backtrace+0x0/0xdc) from [<c00a1f70>]
(__alloc_pages_nodemask+0x4)
[ 1712.814666] [<c00a1f70>] (__alloc_pages_nodemask+0x47c/0x4d4) from
[<c00a1fd8>] (__get_free_pages+)
[ 1712.824645] [<c00a1fd8>] (__get_free_pages+0x10/0x3c) from [<c026eb5c>]
(__alloc_skb+0x4c/0xfc)
[ 1712.833465] [<c026eb5c>] (__alloc_skb+0x4c/0xfc) from [<bf28c738>]
(l2cap_recv_acldata+0xf0/0x1f8 )
[ 1712.843322] [<bf28c738>] (l2cap_recv_acldata+0xf0/0x1f8 [l2cap]) from
[<bf0094ac>] (hci_rx_task+0x)
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Johan Hedberg
80e2c88803 Bluetooth: Don't clear the blacklist when closing the HCI device
Clearing the blacklist in hci_dev_do_close() would mean that user space
needs to do extra work to re-block devices after a DEVDOWN-DEVUP cycle.
This patch removes the clearing of the blacklist in this case and
thereby saves user space from the extra work.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:52 -03:00
Andrei Emeltchenko
5017d8dde1 Bluetooth: remove extra newline from debug output
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau
6fdf482bb3 Bluetooth: Use a stream-oriented recvmsg with SOCK_STREAM L2CAP sockets.
L2CAP ERTM sockets can be opened with the SOCK_STREAM socket type,
which is a mandatory request for ERTM mode.

However, these sockets still have SOCK_SEQPACKET read semantics when
bt_sock_recvmsg() is used to pull data from the receive queue.  If the
application is only reading part of a frame, then the unread portion
of the frame is discarded.  If the application requests more bytes
than are in the current frame, only the current frame's data is
returned.

This patch utilizes common code derived from RFCOMM's recvmsg()
function to make L2CAP SOCK_STREAM reads behave like RFCOMM reads (and
other SOCK_STREAM sockets in general).  The application may read one
byte at a time from the input stream and not lose any data, and may
also read across L2CAP frame boundaries.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau
3d7d01dffe Bluetooth: Use common SOCK_STREAM receive code in RFCOMM
To reduce code duplication, have rfcomm_sock_recvmsg() call
bt_sock_stream_recvmsg().  The common bt_sock_stream_recvmsg()
code is nearly identical, with the RFCOMM-specific functionality
for deferred setup and connection unthrottling left in
rfcomm_sock_recvmsg().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau
796c86eec8 Bluetooth: Add common code for stream-oriented recvmsg()
This commit adds a bt_sock_stream_recvmsg() function for use by any
Bluetooth code that uses SOCK_STREAM sockets.  This code is copied
from rfcomm_sock_recvmsg() with minimal modifications to remove
RFCOMM-specific functionality and improve readability.

L2CAP (with the SOCK_STREAM socket type) and RFCOMM have common needs
when it comes to reading data.  Proper stream read semantics require
that applications can read from a stream one byte at a time and not
lose any data.  The RFCOMM code already operated on and pulled data
from the underlying L2CAP socket, so very few changes were required to
make the code more generic for use with non-RFCOMM data over L2CAP.

Applications that need more awareness of L2CAP frame boundaries are
still free to use SOCK_SEQPACKET sockets, and may verify that they
connection did not fall back to basic mode by calling getsockopt().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Mat Martineau
0fba2558cb Bluetooth: Validate PSM values in calls to connect() and bind()
Valid L2CAP PSMs are odd numbers, and the least significant bit of the
most significant byte must be 0.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
Yuri Kululin
08601469a5 Bluetooth: Fix RFCOMM RPN negotiation
According to the ETSI 3GPP TS 07.10 the default bit rate value for RFCOMM
is 9600 bit/s. Return this bit rate in case of RPN request and accept other
sane bit rates proposed by the sender in RPM command.

Signed-off-by: Yuri Kululin <ext-yuri.kululin@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
David Vrabel
8f1e174223 Bluetooth: HCI devices are either BR/EDR or AMP radios
HCI transport drivers may not know what type of radio an AMP device has
so only say whether they're BR/EDR or AMP devices.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-12 12:44:51 -03:00
David S. Miller
d122179a3c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/core/ethtool.c
2010-10-11 12:30:34 -07:00
Gustavo F. Padovan
eaa71b318c Bluetooth: Disallow to change L2CAP_OPTIONS values when connected
L2CAP doesn't permit change like MTU, FCS, TxWindow values while the
connection is alive, we can only set that before the
connection/configuration process. That can lead to bugs in the L2CAP
operation.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-10-04 19:28:52 -03:00
Gustavo F. Padovan
b0239c80fe Revert "Bluetooth: Don't accept ConfigReq if we aren't in the BT_CONFIG state"
This reverts commit 8cb8e6f168.

That commit introduced a regression with the Bluetooth Profile Tuning
Suite(PTS), Reverting this make sure that L2CAP is in a qualificable
state.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Gustavo F. Padovan
fad003b6c8 Bluetooth: Fix inconsistent lock state with RFCOMM
When receiving a rfcomm connection with the old dund deamon a
inconsistent lock state happens. That's because interrupts were already
disabled by l2cap_conn_start() when rfcomm_sk_state_change() try to lock
the spin_lock.

As result we may have a inconsistent lock state for l2cap_conn_start()
after rfcomm_sk_state_change() calls bh_lock_sock() and disable interrupts
as well.

[ 2833.151999]
[ 2833.151999] =================================
[ 2833.151999] [ INFO: inconsistent lock state ]
[ 2833.151999] 2.6.36-rc3 #2
[ 2833.151999] ---------------------------------
[ 2833.151999] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
[ 2833.151999] krfcommd/2306 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 2833.151999]  (slock-AF_BLUETOOTH){+.?...}, at: [<ffffffffa00bcb56>] rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999] {IN-SOFTIRQ-W} state was registered at:
[ 2833.151999]   [<ffffffff81094346>] __lock_acquire+0x5b6/0x1560
[ 2833.151999]   [<ffffffff8109534a>] lock_acquire+0x5a/0x70
[ 2833.151999]   [<ffffffff81392b6c>] _raw_spin_lock+0x2c/0x40
[ 2833.151999]   [<ffffffffa00a5092>] l2cap_conn_start+0x92/0x640 [l2cap]
[ 2833.151999]   [<ffffffffa00a6a3f>] l2cap_sig_channel+0x6bf/0x1320 [l2cap]
[ 2833.151999]   [<ffffffffa00a9173>] l2cap_recv_frame+0x133/0x770 [l2cap]
[ 2833.151999]   [<ffffffffa00a997b>] l2cap_recv_acldata+0x1cb/0x390 [l2cap]
[ 2833.151999]   [<ffffffffa000db4b>] hci_rx_task+0x2ab/0x450 [bluetooth]
[ 2833.151999]   [<ffffffff8106b22b>] tasklet_action+0xcb/0xe0
[ 2833.151999]   [<ffffffff8106b91e>] __do_softirq+0xae/0x150
[ 2833.151999]   [<ffffffff8102bc0c>] call_softirq+0x1c/0x30
[ 2833.151999]   [<ffffffff8102ddb5>] do_softirq+0x75/0xb0
[ 2833.151999]   [<ffffffff8106b56d>] irq_exit+0x8d/0xa0
[ 2833.151999]   [<ffffffff8104484b>] smp_apic_timer_interrupt+0x6b/0xa0
[ 2833.151999]   [<ffffffff8102b6d3>] apic_timer_interrupt+0x13/0x20
[ 2833.151999]   [<ffffffff81029dfa>] cpu_idle+0x5a/0xb0
[ 2833.151999]   [<ffffffff81381ded>] rest_init+0xad/0xc0
[ 2833.151999]   [<ffffffff817ebc4d>] start_kernel+0x2dd/0x2e8
[ 2833.151999]   [<ffffffff817eb2e6>] x86_64_start_reservations+0xf6/0xfa
[ 2833.151999]   [<ffffffff817eb3ce>] x86_64_start_kernel+0xe4/0xeb
[ 2833.151999] irq event stamp: 731
[ 2833.151999] hardirqs last  enabled at (731): [<ffffffff8106b762>] local_bh_enable_ip+0x82/0xe0
[ 2833.151999] hardirqs last disabled at (729): [<ffffffff8106b93e>] __do_softirq+0xce/0x150
[ 2833.151999] softirqs last  enabled at (730): [<ffffffff8106b96e>] __do_softirq+0xfe/0x150
[ 2833.151999] softirqs last disabled at (711): [<ffffffff8102bc0c>] call_softirq+0x1c/0x30
[ 2833.151999]
[ 2833.151999] other info that might help us debug this:
[ 2833.151999] 2 locks held by krfcommd/2306:
[ 2833.151999]  #0:  (rfcomm_mutex){+.+.+.}, at: [<ffffffffa00bb744>] rfcomm_run+0x174/0xb20 [rfcomm]
[ 2833.151999]  #1:  (&(&d->lock)->rlock){+.+...}, at: [<ffffffffa00b9223>] rfcomm_dlc_accept+0x53/0x100 [rfcomm]
[ 2833.151999]
[ 2833.151999] stack backtrace:
[ 2833.151999] Pid: 2306, comm: krfcommd Tainted: G        W   2.6.36-rc3 #2
[ 2833.151999] Call Trace:
[ 2833.151999]  [<ffffffff810928e1>] print_usage_bug+0x171/0x180
[ 2833.151999]  [<ffffffff810936c3>] mark_lock+0x333/0x400
[ 2833.151999]  [<ffffffff810943ca>] __lock_acquire+0x63a/0x1560
[ 2833.151999]  [<ffffffff810948b5>] ? __lock_acquire+0xb25/0x1560
[ 2833.151999]  [<ffffffff8109534a>] lock_acquire+0x5a/0x70
[ 2833.151999]  [<ffffffffa00bcb56>] ? rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999]  [<ffffffff81392b6c>] _raw_spin_lock+0x2c/0x40
[ 2833.151999]  [<ffffffffa00bcb56>] ? rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999]  [<ffffffffa00bcb56>] rfcomm_sk_state_change+0x46/0x170 [rfcomm]
[ 2833.151999]  [<ffffffffa00b9239>] rfcomm_dlc_accept+0x69/0x100 [rfcomm]
[ 2833.151999]  [<ffffffffa00b9a49>] rfcomm_check_accept+0x59/0xd0 [rfcomm]
[ 2833.151999]  [<ffffffffa00bacab>] rfcomm_recv_frame+0x9fb/0x1320 [rfcomm]
[ 2833.151999]  [<ffffffff813932bb>] ? _raw_spin_unlock_irqrestore+0x3b/0x60
[ 2833.151999]  [<ffffffff81093acd>] ? trace_hardirqs_on_caller+0x13d/0x180
[ 2833.151999]  [<ffffffff81093b1d>] ? trace_hardirqs_on+0xd/0x10
[ 2833.151999]  [<ffffffffa00bb7f1>] rfcomm_run+0x221/0xb20 [rfcomm]
[ 2833.151999]  [<ffffffff813905e7>] ? schedule+0x287/0x780
[ 2833.151999]  [<ffffffffa00bb5d0>] ? rfcomm_run+0x0/0xb20 [rfcomm]
[ 2833.151999]  [<ffffffff81081026>] kthread+0x96/0xa0
[ 2833.151999]  [<ffffffff8102bb14>] kernel_thread_helper+0x4/0x10
[ 2833.151999]  [<ffffffff813936bc>] ? restore_args+0x0/0x30
[ 2833.151999]  [<ffffffff81080f90>] ? kthread+0x0/0xa0
[ 2833.151999]  [<ffffffff8102bb10>] ? kernel_thread_helper+0x0/0x10

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Gustavo F. Padovan
ccbb84af28 Bluetooth: Simplify L2CAP Streaming mode sending
As we don't have any error control on the Streaming mode, i.e., we don't
need to keep a copy of the skb for later resending we don't need to
call skb_clone() on it.
Then we can go one further here, and dequeue the skb before sending it,
that also means we don't need to look to sk->sk_send_head anymore.

The patch saves memory and time when sending Streaming mode data, so
it is good to mainline.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Andrei Emeltchenko
8183b775bc Bluetooth: fix MTU L2CAP configuration parameter
When receiving L2CAP negative configuration response with respect
to MTU parameter we modify wrong field. MTU here means proposed
value of MTU that the remote device intends to transmit. So for local
L2CAP socket it is pi->imtu.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Mat Martineau
8c462b6047 Bluetooth: Only enable L2CAP FCS for ERTM or streaming
This fixes a bug which caused the FCS setting to show L2CAP_FCS_CRC16
with L2CAP modes other than ERTM or streaming.  At present, this only
affects the FCS value shown with getsockopt() for basic mode.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-09-30 12:19:35 -03:00
Eric Dumazet
a02cec2155 net: return operator cleanup
Change "return (EXPR);" to "return EXPR;"

return is not a function, parentheses are not required.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-23 14:33:39 -07:00
Eric Dumazet
db40980fcd net: poll() optimizations
No need to test twice sk->sk_shutdown & RCV_SHUTDOWN

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-06 18:48:45 -07:00
Mat Martineau
cff70fae11 Bluetooth: Fix incorrect setting of remote_tx_win for L2CAP ERTM
remote_tx_win is intended to be set on receipt of an L2CAP
configuration request.  The value is used to determine the size of the
transmit window on the remote side of an ERTM connection, so L2CAP
can stop sending frames when that remote window is full.

An incorrect remote_tx_win value will cause the stack to not fully
utilize the tx window (performance impact), or to overfill the remote
tx window (causing dropped frames or a disconnect).

This patch removes an extra setting of remote_tx_win when a
configuration response is received.  The transmit window has a
different meaning in a response - it is an informational value
less than or equal to the local tx_win.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-10 07:59:11 -04:00
Mat Martineau
86b1b26326 Bluetooth: Fix endianness issue with L2CAP MPS configuration
Incoming configuration values must be converted to native CPU order
before use.  This fixes a bug where a little-endian MPS value is
compared to a native CPU value.  On big-endian processors, this
can cause ERTM and streaming mode segmentation to produce PDUs
that are larger than the remote stack is expecting, or that would
produce fragmented skbs that the current FCS code cannot handle.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-10 07:59:09 -04:00
Ville Tervo
adb08edea0 Bluetooth: Check result code of L2CAP information response
Check result code of L2CAP information response. Otherwise
it would read invalid feature mask and access invalid memory.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-04 07:25:17 -07:00
Gustavo F. Padovan
6340650400 Bluetooth: Don't send RFC for Basic Mode if only it is supported
If the remote side doesn't support Enhanced Retransmission Mode neither
Streaming Mode, we shall not send the RFC option.

Some devices that only supports Basic Mode do not understanding the RFC
option. This patch fixes the regression found with these devices.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-08-04 07:23:00 -07:00
Gustavo F. Padovan
28e9509b12 Bluetooth: Remove __exit from rfcomm_cleanup_ttys()
rfcomm_cleanup_ttys() is also called from rfcomm_init(), so it can't
have __exit.

Reported-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-31 16:09:21 -07:00
David Miller
ea4bd8ba80 Bluetooth: Use list_head for HCI blacklist head
The bdaddr in the list root is completely unused and just
taking up space.

Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-31 16:06:58 -07:00
Gustavo F. Padovan
2f8362afcd Bluetooth: Add __init and __exit marks to RFCOMM
Those annotation save memory and space on the binary. __init code is
discarded just after execute and __exit code is discarded if the module
is built into the kernel image or unload of modules is not allowed.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-27 12:37:27 -07:00
Gustavo F. Padovan
da5f6c37ee Bluetooth: Test 'count' value before enter the loop
Testing first we avoid enter the loop when count = 0.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-27 12:33:49 -07:00
Marcel Holtmann
e73439d8c0 Bluetooth: Defer SCO setup if mode change is pending
Certain headsets such as the Motorola H350 will reject SCO and eSCO
connection requests while the ACL is transitioning from sniff mode
to active mode. Add synchronization so that SCO and eSCO connection
requests will wait until the ACL has fully transitioned to active mode.

< HCI Command: Exit Sniff Mode (0x02|0x0004) plen 2
    handle 12
> HCI Event: Command Status (0x0f) plen 4
    Exit Sniff Mode (0x02|0x0004) status 0x00 ncmd 1
< HCI Command:  Setup Synchronous Connection (0x01|0x0028) plen 17
    handle 12 voice setting 0x0040
> HCI Event: Command Status (0x0f) plen 4
    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 12 packets 1
> HCI Event: Mode Change (0x14) plen 6
    status 0x00 handle 12 mode 0x00 interval 0
    Mode: Active
> HCI Event: Synchronous Connect Complete (0x2c) plen 17
    status 0x10 handle 14 bdaddr 00:1A:0E:50:28:A4 type SCO
    Error: Connection Accept Timeout Exceeded

Signed-off-by: Ron Shaffer <rshaffer@codeaurora.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-27 12:29:04 -07:00
Gustavo F. Padovan
d1c4a17d58 Bluetooth: Enable L2CAP Extended features by default
Change the enable_ertm param to disable_ertm and default value to 0. That
means that L2CAP Extended features are enabled by default now.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:13 -07:00
Gustavo F. Padovan
893ef97112 Bluetooth: Fix typo in hci_event.c
memmory -> memory

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:13 -07:00
Gustavo F. Padovan
5d8868ff3d Bluetooth: Add Google's copyright to L2CAP
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00
Suraj Sumangala
9981151086 Bluetooth: Implemented HCI frame reassembly for RX from stream
Implemented frame reassembly implementation for reassembling fragments
received from stream.

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00
Suraj Sumangala
f39a3c0640 Bluetooth: Modified hci_recv_fragment() to use hci_reassembly helper
Modified packet based reassembly function hci_recv_fragment() to use
hci_reassembly()

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00
Suraj Sumangala
33e882a5f2 Bluetooth: Implement hci_reassembly helper to reassemble RX packets
Implements feature to reassemble received HCI frames from any input stream

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00
Suraj Sumangala
cd4c53919e Bluetooth: Add one more buffer for HCI stream reassembly
Additional reassembly buffer to keep track of stream reasembly

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-07-21 10:39:12 -07:00