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free phy_driver memory and initialize linkid to 0.
ST-Ericsson ID: 358047
ST-Ericsson Linux next: NA
ST-Ericsson FOSS-OUT ID: NA
Change-Id: Icb295648b23bd836b9f5a40a0b605e4792a8511d
Signed-off-by: Durga Prasada Rao BATHINA <durgaprasadarao.b@stericcson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/31751
Reviewed-by: Bibek BASU <bibek.basu@stericsson.com>
Tested-by: Bibek BASU <bibek.basu@stericsson.com>
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Inserts correct dest addr and port for the TCP/IP data on ST-Ericsson
U8500. This is required due to lack of Pipe controller implementation in
ST-Ericsson U8500 Modem
Signed-off-by: Hemant Ramdasi <hemant.ramdasi@stericsson.com>
Change-Id: I3c199cc94da3b81de3ab97f22b6e7087b2cd0071
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/31273
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This reverts commit 8b7b286d853032b485de9753c3908c300266c660.
Refer 0c184ed9032c58b21f0d90de28c796874b73d6a1 for original
commit.
Signed-off-by: Hemant Ramdasi <hemant.ramdasi@stericsson.com>
Change-Id: Iaa8c88ed05d24bdfb3c7b505cc1342c088cdfd51
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30328
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This reverts commit 4e5176a567166769c29a39f66959b81efae11e47.
Signed-off-by: Hemant Ramdasi <hemant.ramdasi@stericsson.com>
Change-Id: I66de7f9a713c056ce974355e6c28feac2282aec7
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30327
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Adds ability to setup SCO connection parameters through socket option.
ST-Ericsson Linux next: Not tested, ER 256277
ST-Ericsson ID: 256277
ST-Ericsson FOSS-OUT ID: STETL-FOSS-OUT-10137
Change-Id: If859341019fd9f7cc7c0efe95750779e84fac801
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30136
Reviewed-by: Par-Gunnar HJALMDAHL <par-gunnar.p.hjalmdahl@stericsson.com>
Tested-by: Par-Gunnar HJALMDAHL <par-gunnar.p.hjalmdahl@stericsson.com>
Reviewed-by: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
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Kconfig for OpenMAC is added to net/Kconfig to fix build error
of u5500 and u9500
ST-Ericsson Linux next: NA
ST-Ericsson ID: 356912
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: Iedfa4e9148433bf052a4dbd979f696952ebde295
Signed-off-by: Tomasz Hliwiak <tomasz.hliwiak@tieto.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/29031
Reviewed-by: Bartosz MARKOWSKI <bartosz.markowski@tieto.com>
Reviewed-by: QATOOLS
Reviewed-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Tested-by: Rabin VINCENT <rabin.vincent@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30005
Tested-by: Bartosz MARKOWSKI <bartosz.markowski@tieto.com>
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This patch add internal support for openMAC driver
from compat-wireless-openmac git.
Internal only, for customer deliveries changes
should be made in defconfig and Kconfig accordingly
to what's done now via script called from Android.mk
Only one (UMAC or openMAC based) solution should be delivered
to customers.
ST-Ericsson ID: 355582
ST-Ericsson FOSS-OUT ID: Trivial
ST-Ericsson Linux next: NA
Change-Id: Idd0081cc327faf64131f29a3f3a54fd6d670acf2
Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/28667
Reviewed-by: Linus WALLEIJ <linus.walleij@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30004
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And disable use of wireless from kernel tree
if compat-wireless is enabled.
Depends-On: I7147b541419c684dc337e5d32b021b470dd0f344,
Ib489e754a7cf4bd79ce20955be61cae7958043e1,
Id8d0913143e58a21dbfebe187a9594a0cb7bea8a,
Ieaadb213c53d967ab5dcb293aeee088fd3efbae8,
Ie280d1b7e533d7045e4e77c0cab3d69f1180c091,
Ia40a0c011f35c3056d02d12b054f93aa86d99b47,
Ib3b5524ec3814b00a7e46f591d7715db16eec5fd
ST-Ericsson Linux next: -
ST-Ericsson ID: CR283174
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: I28a1b6b32383e71f9679031bffcefff022eaadde
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/16241
Tested-by: Mariusz CZAPLICKI <mariusz.czaplicki@tieto.com>
Reviewed-by: Bartosz MARKOWSKI <bartosz.markowski@tieto.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30002
Tested-by: Bartosz MARKOWSKI <bartosz.markowski@tieto.com>
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Adds handling of extension headers to BNEP control packets.
Adds support for BNEP setup connection request handled in pand.
ST-Ericsson Linux next: -
ST-Ericsson ID: 328144
ST-Ericsson FOSS-OUT-ID: Trivial
Depends-On: Id2cbd106af9b380f63d87ea0b4652ec6cd996fa4
Change-Id: I005e00e2fe934dc19f40533953d5b233676f0d0e
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/18117
Reviewed-by: Par-Gunnar HJALMDAHL <par-gunnar.p.hjalmdahl@stericsson.com>
Reviewed-by: Lukasz RYMANOWSKI <lukasz.rymanowski@stericsson.com>
Reviewed-by: Henrik POSSUNG <henrik.possung@stericsson.com>
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..linux-linaro-3.0-2011.07-1_glk3.0
Conflicts:
arch/arm/common/Makefile
drivers/misc/Kconfig
drivers/misc/Makefile
kernel/printk.c
Change-Id: I126f34edb1879981909072beefb2738cad26f951
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Signed-off-by: Robert Marklund <robert.marklund@stericsson.com>
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Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change-Id: I7fec5eb6d17e01a87e89c2e7adec72d2f8babf83
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/21520
Reviewed-by: Erwan BRACQ <erwan.bracq@stericsson.com>
Tested-by: Erwan BRACQ <erwan.bracq@stericsson.com>
Reviewed-by: QATEST
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
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This would cause log spam to the point of slowing down the system.
Change-Id: I5655f0207935004b0198f43ad0d3c9ea25466e4e
Signed-off-by: JP Abgrall <jpa@google.com>
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* uid handling
- Limit UID impersonation to processes with a gid in AID_NET_BW_ACCT.
This affects socket tagging, and data removal.
- Limit stats lookup to own uid or the process gid is in AID_NET_BW_STATS.
This affects stats lookup.
* allow pacifying the module
Setting passive to Y/y will make the module return immediately on
external stimulus.
No more stats and silent success on ctrl writes.
Mainly used when one suspects this module of misbehaving.
Change-Id: I83990862d52a9b0922aca103a0f61375cddeb7c4
Signed-off-by: JP Abgrall <jpa@google.com>
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* Add a new ctrl command to delete stored data.
d <acct_tag> [<uid>]
The uid will default to the running process's.
The accounting tag can be 0, in which case all counters and socket tags
associated with the uid will be cleared.
* Simplify the ctrl command handling at the expense of duplicate code.
This should make it easier to maintain.
* /proc/net/xt_qtaguid/stats now returns more stats
idx iface acct_tag_hex uid_tag_int
{rx,tx}_{bytes,packets}
{rx,tx}_{tcp,udp,other}_{bytes,packets}
the {rx,tx}_{bytes,packets} are the totals.
* re-tagging will now allow changing the uid.
Change-Id: I9594621543cefeab557caa3d68a22a3eb320466d
Signed-off-by: JP Abgrall <jpa@google.com>
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This uses the NETLINK NETLINK_NFLOG family to log a single message
when the quota limit is reached.
It uses the same packet type as ipt_ULOG, but
- never copies skb data,
- uses 112 as the event number (ULOG's +1)
It doesn't log if the module param "event_num" is 0.
Change-Id: I6f31736b568bb31a4ff0b9ac2ee58380e6b675ca
Signed-off-by: JP Abgrall <jpa@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: fix file mode calculation
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open(2) must always include one of O_RDONLY, O_WRONLY, or O_RDWR. No need
for any O_APPEND special case.
Passing O_WRONLY|O_RDWR is undefined according to the man page, but the
Linux VFS interprets this as O_RDWR, so we'll do the same.
This fixes open(2) with flags O_RDWR|O_APPEND, which was incorrectly being
translated to readonly.
Reported-by: Fyodor Ustinov <ufm@ufm.su>
Signed-off-by: Sage Weil <sage@newdream.net>
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Another regression fix considering incomming l2cap connections with
defer_setup enabled. In situations when incomming connection is
extracted with l2cap_sock_accept, it's bt_sock info will have
'parent' member zerroed, but 'parent' may be used unconditionally
in l2cap_conn_start() and l2cap_security_cfm() when defer_setup
is enabled.
Backtrace:
[<bf02d5ac>] (l2cap_security_cfm+0x0/0x2ac [bluetooth]) from [<bf01f01c>] (hci_event_pac
ket+0xc2c/0x4aa4 [bluetooth])
[<bf01e3f0>] (hci_event_packet+0x0/0x4aa4 [bluetooth]) from [<bf01a844>] (hci_rx_task+0x
cc/0x27c [bluetooth])
[<bf01a778>] (hci_rx_task+0x0/0x27c [bluetooth]) from [<c008eee4>] (tasklet_action+0xa0/
0x15c)
[<c008ee44>] (tasklet_action+0x0/0x15c) from [<c008f38c>] (__do_softirq+0x98/0x130)
r7:00000101 r6:00000018 r5:00000001 r4:efc46000
[<c008f2f4>] (__do_softirq+0x0/0x130) from [<c008f524>] (do_softirq+0x4c/0x58)
[<c008f4d8>] (do_softirq+0x0/0x58) from [<c008f5e0>] (run_ksoftirqd+0xb0/0x1b4)
r4:efc46000 r3:00000001
[<c008f530>] (run_ksoftirqd+0x0/0x1b4) from [<c009f2a8>] (kthread+0x84/0x8c)
r7:00000000 r6:c008f530 r5:efc47fc4 r4:efc41f08
[<c009f224>] (kthread+0x0/0x8c) from [<c008cc84>] (do_exit+0x0/0x5f0)
Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Caused by the following commit, partially revert it.
commit 9fa7e4f76f3658ba1f44fbdb95c77e7df3f53f95
Author: Gustavo F. Padovan <padovan@profusion.mobi>
Date: Thu Jun 30 16:11:30 2011 -0300
Bluetooth: Fix regression with incoming L2CAP connections
PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
( probably after the df3c3931e commit ) the l2cap connection
could not be established in case when the "Auth Complete" HCI
event does not arive before the initiator send "Configuration
request", in which case l2cap replies with "Command rejected"
since the channel is still in BT_CONNECT2 state.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the remote device is not present, the connections attemp fails and
the struct hci_conn was not freed
Signed-off-by: Tomas Targownik <ttargownik@geicp.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
( probably after the df3c3931e commit ) the l2cap connection
could not be established in case when the "Auth Complete" HCI
event does not arive before the initiator send "Configuration
request", in which case l2cap replies with "Command rejected"
since the channel is still in BT_CONNECT2 state.
Based on patch from: Ilia Kolomisnky <iliak@ti.com>
Change-Id: Ifcffe0124adbbc6d1931389ff7476dd0304d6f51
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Partial revert of commit aabf6f89. When the hidp session thread
was converted from kernel_thread to kthread, the atomic/wakeups
were replaced with kthread_stop. kthread_stop has blocking semantics
which are inappropriate for the hidp session kthread. In addition,
the kthread signals itself to terminate in hidp_process_hid_control()
- it cannot do this with kthread_stop().
Lastly, a wakeup can be lost if the wakeup happens between checking
for the loop exit condition and setting the current state to
TASK_INTERRUPTIBLE. (Without appropriate synchronization mechanisms,
the task state should not be changed between the condition test and
the yield - via schedule() - as this creates a race between the
wakeup and resetting the state back to interruptible.)
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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A remote user can provide a small value for the command size field in
the command header of an l2cap configuration request, resulting in an
integer underflow when subtracting the size of the configuration request
header. This results in copying a very large amount of data via
memcpy() and destroying the kernel heap. Check for underflow.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Another regression fix considering incomming l2cap connections with
defer_setup enabled. In situations when incomming connection is
extracted with l2cap_sock_accept, it's bt_sock info will have
'parent' member zerroed, but 'parent' may be used unconditionally
in l2cap_conn_start() and l2cap_security_cfm() when defer_setup
is enabled.
Backtrace:
[<bf02d5ac>] (l2cap_security_cfm+0x0/0x2ac [bluetooth]) from [<bf01f01c>] (hci_event_pac
ket+0xc2c/0x4aa4 [bluetooth])
[<bf01e3f0>] (hci_event_packet+0x0/0x4aa4 [bluetooth]) from [<bf01a844>] (hci_rx_task+0x
cc/0x27c [bluetooth])
[<bf01a778>] (hci_rx_task+0x0/0x27c [bluetooth]) from [<c008eee4>] (tasklet_action+0xa0/
0x15c)
[<c008ee44>] (tasklet_action+0x0/0x15c) from [<c008f38c>] (__do_softirq+0x98/0x130)
r7:00000101 r6:00000018 r5:00000001 r4:efc46000
[<c008f2f4>] (__do_softirq+0x0/0x130) from [<c008f524>] (do_softirq+0x4c/0x58)
[<c008f4d8>] (do_softirq+0x0/0x58) from [<c008f5e0>] (run_ksoftirqd+0xb0/0x1b4)
r4:efc46000 r3:00000001
[<c008f530>] (run_ksoftirqd+0x0/0x1b4) from [<c009f2a8>] (kthread+0x84/0x8c)
r7:00000000 r6:c008f530 r5:efc47fc4 r4:efc41f08
[<c009f224>] (kthread+0x0/0x8c) from [<c008cc84>] (do_exit+0x0/0x5f0)
Signed-off-by: Ilia Kolomisnky <iliak@ti.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Caused by the following commit, partially revert it.
commit 9fa7e4f76f3658ba1f44fbdb95c77e7df3f53f95
Author: Gustavo F. Padovan <padovan@profusion.mobi>
Date: Thu Jun 30 16:11:30 2011 -0300
Bluetooth: Fix regression with incoming L2CAP connections
PTS test A2DP/SRC/SRC_SET/TC_SRC_SET_BV_02_I revealed that
( probably after the df3c3931e commit ) the l2cap connection
could not be established in case when the "Auth Complete" HCI
event does not arive before the initiator send "Configuration
request", in which case l2cap replies with "Command rejected"
since the channel is still in BT_CONNECT2 state.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no software fallback implemented for SCTP or FCoE checksumming,
and so it should not be passed on by software devices like bridge or bonding.
For VLAN devices, this is different. First, the driver for underlying device
should be prepared to get offloaded packets even when the feature is disabled
(especially if it advertises it in vlan_features). Second, devices under
VLANs do not get replaced without tearing down the VLAN first.
This fixes a mess I accidentally introduced while converting bonding to
ndo_fix_features.
NETIF_F_SOFT_FEATURES are removed from BOND_VLAN_FEATURES because they
are unused as of commit 712ae51afd.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Packets to devices without NETIF_F_SCTP_CSUM (including NETIF_F_NO_CSUM)
should be properly checksummed because the packets can be diverted or
rerouted after construction. This still leaves packets diverted from
NETIF_F_SCTP_CSUM-enabled devices with broken checksums. Fixing this
needs implementing software offload fallback in networking core.
For users of sctp_checksum_disable, skb->ip_summed should be left as
CHECKSUM_NONE and not CHECKSUM_UNNECESSARY as per include/linux/skbuff.h.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
SUNRPC: Fix use of static variable in rpcb_getport_async
NFSv4.1: update nfs4_fattr_bitmap_maxsz
SUNRPC: Fix a race between work-queue and rpc_killall_tasks
pnfs: write: Set mds_offset in the generic layer - it is needed by all LDs
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The xt_quota2 came from
http://sourceforge.net/projects/xtables-addons/develop
It needed tweaking for it to compile within the kernel tree.
Fixed kmalloc() and create_proc_entry() invocations within
a non-interruptible context.
Removed useless copying of current quota back to the iptable's
struct matchinfo:
- those are per CPU: they will change randomly based on which
cpu gets to update the value.
- they prevent matching a rule: e.g.
-A chain -m quota2 --name q1 --quota 123
can't be followed by
-D chain -m quota2 --name q1 --quota 123
as the 123 will be compared to the struct matchinfo's quota member.
Change-Id: I021d3b743db3b22158cc49acb5c94d905b501492
Signed-off-by: JP Abgrall <jpa@google.com>
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Because struct rpcbind_args *map was declared static, if two
threads entered this method at the same time, the values
assigned to map could be sent two two differen tasks.
This could cause all sorts of problems, include use-after-free
and double-free of memory.
Fix this by removing the static declaration so that the map
pointer is on the stack.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Cc: stable@kernel.org
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The original xt_quota in the kernel is plain broken:
- counts quota at a per CPU level
(was written back when ubiquitous SMP was just a dream)
- provides no way to count across IPV4/IPV6.
This patch is the original unaltered code from:
http://sourceforge.net/projects/xtables-addons
at commit e84391ce665cef046967f796dd91026851d6bbf3
Change-Id: I19d49858840effee9ecf6cff03c23b45a97efdeb
Signed-off-by: JP Abgrall <jpa@google.com>
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This will be useful when userspace wants to restrict some kinds of
operations based on the length of the key size used to encrypt the
link.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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In some cases it will be useful having the key size used for
encrypting the link. For example, some profiles may restrict
some operations depending on the key length.
The key size is stored in the key that is passed to userspace
using the pin_length field in the key structure.
For now this field is only valid for LE controllers. 3.0+HS
controllers define the Read Encryption Key Size command, this
field is intended for storing the value returned by that
command.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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As the key format has changed to something that has a dynamic size,
the way that keys are received and sent must be changed.
The structure fields order is changed to make the parsing of the
information received from the Management Interface easier.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Now that it's possible that the exchanged key is present in
the link key list, we may be able to estabilish security with
an already existing key, without need to perform any SMP
procedure.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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With this we can use only one place to store all keys, without
need to use a field in the connection structure for this
purpose.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Now when the LTK is received from the remote or generated it is stored,
so it can later be used.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Before implementing SM key distribution, the pairing features
exchange must be better negotiated, taking into account some
features of the host and connection requirements.
If we are in the "not pairable" state, it makes no sense to
exchange any key. This allows for simplification of the key
negociation method.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Now that we have methods to finding keys by its parameters we can
reject an encryption request if the key isn't found.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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As the LTK (the new type of key being handled now) has more data
associated with it, we need to store this extra data and retrieve
the keys based on that data.
Methods for searching for a key and for adding a new LTK are
introduced here.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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This adds support for generating and distributing all the keys
specified in the third phase of SMP.
This will make possible to re-establish secure connections, resolve
private addresses and sign commands.
For now, the values generated are random.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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The ERTM receive buffer is now handled in a way that does not require
the busy queue and the associated polling code.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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This change moves most L2CAP ERTM receive buffer handling out of the
L2CAP core and in to the socket code. It's up to the higher layer
(the socket code, in this case) to tell the core when its buffer is
full or has space available. The recv op should always accept
incoming ERTM data or else the connection will go down.
Within the socket layer, an skb that does not fit in the socket
receive buffer will be temporarily stored. When the socket is read
from, that skb will be placed in the receive buffer if possible. Once
adequate buffer space becomes available, the L2CAP core is informed
and the ERTM local busy state is cleared.
Receive buffer management for non-ERTM modes is unchanged.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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The local busy state is entered and exited based on buffer status in
the socket layer (or other upper layer). This change is in
preparation for general buffer status reports from the socket layer,
which will then be used to change the local busy status.
Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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All threads running in process context should disable local bottom
halve before locking hdev->lock.
This patch fix the following message generated when Bluetooh module
is loaded with enable_mgmt=y (CONFIG_PROVE_LOCKING enabled).
[ 107.880781] =================================
[ 107.881631] [ INFO: inconsistent lock state ]
[ 107.881631] 2.6.39+ #1
[ 107.881631] ---------------------------------
[ 107.881631] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 107.881631] rcuc0/7 [HC0[0]:SC1[3]:HE1:SE0] takes:
[ 107.881631] (&(&hdev->lock)->rlock){+.?...}, at: [<ffffffffa0012c8d>] mgmt_set_local_name_complete+0x84/0x10b [bluetooth]
[ 107.881631] {SOFTIRQ-ON-W} state was registered at:
[ 107.881631] [<ffffffff8105188b>] __lock_acquire+0x347/0xd52
[ 107.881631] [<ffffffff810526ac>] lock_acquire+0x8a/0xa7
[ 107.881631] [<ffffffff812b3758>] _raw_spin_lock+0x2c/0x3b
[ 107.881631] [<ffffffffa0011cc2>] mgmt_control+0xd4d/0x175b [bluetooth]
[ 107.881631] [<ffffffffa0013275>] hci_sock_sendmsg+0x97/0x293 [bluetooth]
[ 107.881631] [<ffffffff8121940c>] sock_aio_write+0x126/0x13a
[ 107.881631] [<ffffffff810a35fa>] do_sync_write+0xba/0xfa
[ 107.881631] [<ffffffff810a3beb>] vfs_write+0xaa/0xca
[ 107.881631] [<ffffffff810a3d80>] sys_write+0x45/0x69
[ 107.881631] [<ffffffff812b4892>] system_call_fastpath+0x16/0x1b
[ 107.881631] irq event stamp: 2100876
[ 107.881631] hardirqs last enabled at (2100876): [<ffffffff812b40d4>] restore_args+0x0/0x30
[ 107.881631] hardirqs last disabled at (2100875): [<ffffffff812b3f6a>] save_args+0x6a/0x70
[ 107.881631] softirqs last enabled at (2100862): [<ffffffff8106a805>] rcu_cpu_kthread+0x2b5/0x2e2
[ 107.881631] softirqs last disabled at (2100863): [<ffffffff812b56bc>] call_softirq+0x1c/0x26
[ 107.881631]
[ 107.881631] other info that might help us debug this:
[ 107.881631] Possible unsafe locking scenario:
[ 107.881631]
[ 107.881631] CPU0
[ 107.881631] ----
[ 107.881631] lock(&(&hdev->lock)->rlock);
[ 107.881631] <Interrupt>
[ 107.881631] lock(&(&hdev->lock)->rlock);
[ 107.881631]
[ 107.881631] *** DEADLOCK ***
[ 107.881631]
[ 107.881631] 1 lock held by rcuc0/7:
[ 107.881631] #0: (hci_task_lock){++.-..}, at: [<ffffffffa0008353>] hci_rx_task+0x49/0x2f3 [bluetooth]
[ 107.881631]
[ 107.881631] stack backtrace:
[ 107.881631] Pid: 7, comm: rcuc0 Not tainted 2.6.39+ #1
[ 107.881631] Call Trace:
[ 107.881631] <IRQ> [<ffffffff812ae901>] print_usage_bug+0x1e7/0x1f8
[ 107.881631] [<ffffffff8100a796>] ? save_stack_trace+0x27/0x44
[ 107.881631] [<ffffffff8104fc3f>] ? print_irq_inversion_bug.part.26+0x19a/0x19a
[ 107.881631] [<ffffffff810504bb>] mark_lock+0x106/0x258
[ 107.881631] [<ffffffff81051817>] __lock_acquire+0x2d3/0xd52
[ 107.881631] [<ffffffff8102be73>] ? vprintk+0x3ab/0x3d7
[ 107.881631] [<ffffffff810526ac>] lock_acquire+0x8a/0xa7
[ 107.881631] [<ffffffffa0012c8d>] ? mgmt_set_local_name_complete+0x84/0x10b [bluetooth]
[ 107.881631] [<ffffffff81052615>] ? lock_release+0x16c/0x179
[ 107.881631] [<ffffffff812b3952>] _raw_spin_lock_bh+0x31/0x40
[ 107.881631] [<ffffffffa0012c8d>] ? mgmt_set_local_name_complete+0x84/0x10b [bluetooth]
[ 107.881631] [<ffffffffa0012c8d>] mgmt_set_local_name_complete+0x84/0x10b [bluetooth]
[ 107.881631] [<ffffffffa000d3fe>] hci_event_packet+0x122b/0x3e12 [bluetooth]
[ 107.881631] [<ffffffff81050658>] ? mark_held_locks+0x4b/0x6d
[ 107.881631] [<ffffffff812b3cff>] ? _raw_spin_unlock_irqrestore+0x40/0x4d
[ 107.881631] [<ffffffff810507b9>] ? trace_hardirqs_on_caller+0x13f/0x172
[ 107.881631] [<ffffffff812b3d07>] ? _raw_spin_unlock_irqrestore+0x48/0x4d
[ 107.881631] [<ffffffffa00083d2>] hci_rx_task+0xc8/0x2f3 [bluetooth]
[ 107.881631] [<ffffffff8102f836>] ? __local_bh_enable+0x90/0xa4
[ 107.881631] [<ffffffff8102f5a9>] tasklet_action+0x87/0xe6
[ 107.881631] [<ffffffff8102fa11>] __do_softirq+0x9f/0x13f
[ 107.881631] [<ffffffff812b56bc>] call_softirq+0x1c/0x26
[ 107.881631] <EOI> [<ffffffff810033b8>] ? do_softirq+0x46/0x9a
[ 107.881631] [<ffffffff8106a805>] ? rcu_cpu_kthread+0x2b5/0x2e2
[ 107.881631] [<ffffffff8102f906>] _local_bh_enable_ip+0xac/0xc9
[ 107.881631] [<ffffffff8102f93b>] local_bh_enable+0xd/0xf
[ 107.881631] [<ffffffff8106a805>] rcu_cpu_kthread+0x2b5/0x2e2
[ 107.881631] [<ffffffff81041586>] ? __init_waitqueue_head+0x46/0x46
[ 107.881631] [<ffffffff8106a550>] ? rcu_yield.constprop.42+0x98/0x98
[ 107.881631] [<ffffffff81040f0a>] kthread+0x7f/0x87
[ 107.881631] [<ffffffff812b55c4>] kernel_thread_helper+0x4/0x10
[ 107.881631] [<ffffffff812b40d4>] ? retint_restore_args+0x13/0x13
[ 107.881631] [<ffffffff81040e8b>] ? __init_kthread_worker+0x53/0x53
[ 107.881631] [<ffffffff812b55c0>] ? gs_change+0x13/0x13
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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Since hdev->lock may be acquired by threads runnning in interrupt
context, all threads running in process context should disable
local bottom halve before locking hdev->lock. This can be done by
using hci_dev_lock_bh macro.
This way, we avoid potencial deadlocks like this one reported by
CONFIG_PROVE_LOCKING=y.
[ 304.788780] =================================
[ 304.789686] [ INFO: inconsistent lock state ]
[ 304.789686] 2.6.39+ #1
[ 304.789686] ---------------------------------
[ 304.789686] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 304.789686] ksoftirqd/0/3 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 304.789686] (&(&hdev->lock)->rlock){+.?...}, at: [<ffffffffa000bbfe>] hci_conn_check_pending+0x38/0x76 [bluetooth]
[ 304.789686] {SOFTIRQ-ON-W} state was registered at:
[ 304.789686] [<ffffffff8105188b>] __lock_acquire+0x347/0xd52
[ 304.789686] [<ffffffff810526ac>] lock_acquire+0x8a/0xa7
[ 304.789686] [<ffffffff812b3758>] _raw_spin_lock+0x2c/0x3b
[ 304.789686] [<ffffffffa0009cf0>] hci_blacklist_del+0x1f/0x8a [bluetooth]
[ 304.789686] [<ffffffffa00139fd>] hci_sock_ioctl+0x2d9/0x314 [bluetooth]
[ 304.789686] [<ffffffff812197d8>] sock_ioctl+0x1f2/0x214
[ 304.789686] [<ffffffff810b0fd6>] do_vfs_ioctl+0x46c/0x4ad
[ 304.789686] [<ffffffff810b1059>] sys_ioctl+0x42/0x65
[ 304.789686] [<ffffffff812b4892>] system_call_fastpath+0x16/0x1b
[ 304.789686] irq event stamp: 9768
[ 304.789686] hardirqs last enabled at (9768): [<ffffffff812b40d4>] restore_args+0x0/0x30
[ 304.789686] hardirqs last disabled at (9767): [<ffffffff812b3f6a>] save_args+0x6a/0x70
[ 304.789686] softirqs last enabled at (9726): [<ffffffff8102fa9b>] __do_softirq+0x129/0x13f
[ 304.789686] softirqs last disabled at (9739): [<ffffffff8102fb33>] run_ksoftirqd+0x82/0x133
[ 304.789686]
[ 304.789686] other info that might help us debug this:
[ 304.789686] Possible unsafe locking scenario:
[ 304.789686]
[ 304.789686] CPU0
[ 304.789686] ----
[ 304.789686] lock(&(&hdev->lock)->rlock);
[ 304.789686] <Interrupt>
[ 304.789686] lock(&(&hdev->lock)->rlock);
[ 304.789686]
[ 304.789686] *** DEADLOCK ***
[ 304.789686]
[ 304.789686] 1 lock held by ksoftirqd/0/3:
[ 304.789686] #0: (hci_task_lock){++.-..}, at: [<ffffffffa0008353>] hci_rx_task+0x49/0x2f3 [bluetooth]
[ 304.789686]
[ 304.789686] stack backtrace:
[ 304.789686] Pid: 3, comm: ksoftirqd/0 Not tainted 2.6.39+ #1
[ 304.789686] Call Trace:
[ 304.789686] [<ffffffff812ae901>] print_usage_bug+0x1e7/0x1f8
[ 304.789686] [<ffffffff8100a796>] ? save_stack_trace+0x27/0x44
[ 304.789686] [<ffffffff8104fc3f>] ? print_irq_inversion_bug.part.26+0x19a/0x19a
[ 304.789686] [<ffffffff810504bb>] mark_lock+0x106/0x258
[ 304.789686] [<ffffffff812b40d4>] ? retint_restore_args+0x13/0x13
[ 304.789686] [<ffffffff81051817>] __lock_acquire+0x2d3/0xd52
[ 304.789686] [<ffffffff8102be73>] ? vprintk+0x3ab/0x3d7
[ 304.789686] [<ffffffff812ae126>] ? printk+0x3c/0x3e
[ 304.789686] [<ffffffff810526ac>] lock_acquire+0x8a/0xa7
[ 304.789686] [<ffffffffa000bbfe>] ? hci_conn_check_pending+0x38/0x76 [bluetooth]
[ 304.789686] [<ffffffff811601c6>] ? __dynamic_pr_debug+0x10c/0x11a
[ 304.789686] [<ffffffff812b3758>] _raw_spin_lock+0x2c/0x3b
[ 304.789686] [<ffffffffa000bbfe>] ? hci_conn_check_pending+0x38/0x76 [bluetooth]
[ 304.789686] [<ffffffffa000bbfe>] hci_conn_check_pending+0x38/0x76 [bluetooth]
[ 304.789686] [<ffffffffa000c561>] hci_event_packet+0x38e/0x3e12 [bluetooth]
[ 304.789686] [<ffffffff81052615>] ? lock_release+0x16c/0x179
[ 304.789686] [<ffffffff812b3b41>] ? _raw_read_unlock+0x23/0x27
[ 304.789686] [<ffffffffa0013e7f>] ? hci_send_to_sock+0x179/0x188 [bluetooth]
[ 304.789686] [<ffffffffa00083d2>] hci_rx_task+0xc8/0x2f3 [bluetooth]
[ 304.789686] [<ffffffff8102f5a9>] tasklet_action+0x87/0xe6
[ 304.789686] [<ffffffff8102fa11>] __do_softirq+0x9f/0x13f
[ 304.789686] [<ffffffff8102fb33>] run_ksoftirqd+0x82/0x133
[ 304.789686] [<ffffffff8102fab1>] ? __do_softirq+0x13f/0x13f
[ 304.789686] [<ffffffff81040f0a>] kthread+0x7f/0x87
[ 304.789686] [<ffffffff812b55c4>] kernel_thread_helper+0x4/0x10
[ 304.789686] [<ffffffff812b40d4>] ? retint_restore_args+0x13/0x13
[ 304.789686] [<ffffffff81040e8b>] ? __init_kthread_worker+0x53/0x53
[ 304.789686] [<ffffffff812b55c0>] ? gs_change+0x13/0x13
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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