GitHub/LineageOS/android_kernel_motorola_exynos9610.git
9 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
David S. Miller [Fri, 30 Oct 2015 10:41:10 +0000 (19:41 +0900)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2015-10-28

Here are a some more Bluetooth patches for 4.4 which collected up during
the past week. The most important ones are from Kuba Pawlak for fixing
locking issues with SCO sockets. There's also a fix from Alexander Aring
for 6lowpan, a memleak fix from Julia Lawall for the btmrvl driver and
some cleanup patches from Marcel.

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: recreate ipv6 link-local addresses when increasing MTU over IPV6_MIN_MTU
Alexander Duyck [Mon, 26 Oct 2015 18:06:33 +0000 (11:06 -0700)]
ipv6: recreate ipv6 link-local addresses when increasing MTU over IPV6_MIN_MTU

This change makes it so that we reinitialize the interface if the MTU is
increased back above IPV6_MIN_MTU and the interface is up.

Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mlxsw-flooding-and-cosmetics'
David S. Miller [Fri, 30 Oct 2015 03:27:07 +0000 (12:27 +0900)]
Merge branch 'mlxsw-flooding-and-cosmetics'

Jiri Pirko says:

====================
mlxsw: driver update

This driver update mainly brings support for user to be able to setup
flooding on specified port, via bridge flag. Also, there is a fix in ageing
time conversion. The rest is just cosmetics.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: spectrum: Make mlxsw_sp_port_switchdev_ops static
Jiri Pirko [Wed, 28 Oct 2015 09:17:05 +0000 (10:17 +0100)]
mlxsw: spectrum: Make mlxsw_sp_port_switchdev_ops static

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: Put braces on all arms of branch statement
Or Gerlitz [Wed, 28 Oct 2015 09:17:04 +0000 (10:17 +0100)]
mlxsw: Put braces on all arms of branch statement

Fix a place where checkpatch complains that braces should be used
on all arms of this statement.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: Put constant on the right side of comparisons
Or Gerlitz [Wed, 28 Oct 2015 09:17:03 +0000 (10:17 +0100)]
mlxsw: Put constant on the right side of comparisons

Fixes those places where checkpatch complains that comparisons
should place the constant on the right side of the test.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: spectrum: Fix ageing time value
Jiri Pirko [Wed, 28 Oct 2015 09:17:02 +0000 (10:17 +0100)]
mlxsw: spectrum: Fix ageing time value

The value passed through switchdev attr set is not in jiffies, but in
clock_t, so fix the convert.

Reported-by: Sagi Rotem <sagir@mellanox.com>
Fixes: 56ade8fe3f ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: reg: Avoid unnecessary line wrap for mlxsw_reg_sfd_uc_unpack
Jiri Pirko [Wed, 28 Oct 2015 09:17:01 +0000 (10:17 +0100)]
mlxsw: reg: Avoid unnecessary line wrap for mlxsw_reg_sfd_uc_unpack

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: reg: Fix desription typos of couple of SFN items
Jiri Pirko [Wed, 28 Oct 2015 09:17:00 +0000 (10:17 +0100)]
mlxsw: reg: Fix desription typos of couple of SFN items

Fix copy-paste errors.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: reg: Fix description for reg_sfd_uc_sub_port
Jiri Pirko [Wed, 28 Oct 2015 09:16:59 +0000 (10:16 +0100)]
mlxsw: reg: Fix description for reg_sfd_uc_sub_port

The original description was for LAG, so fix it.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: spectrum: Add support for flood control
Ido Schimmel [Wed, 28 Oct 2015 09:16:58 +0000 (10:16 +0100)]
mlxsw: spectrum: Add support for flood control

Add or remove a bridged port from the flooding domain of unknown unicast
packets according to user configuration.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: spectrum: Add support for VLAN ranges in flooding configuration
Ido Schimmel [Wed, 28 Oct 2015 09:16:57 +0000 (10:16 +0100)]
mlxsw: spectrum: Add support for VLAN ranges in flooding configuration

When enabling a range of VLANs on a bridged port we can configure
flooding for these VLANs by one register access instead of calling the
same register for each VLAN. This is accomplished by using the 'range'
field of the Switch Flooding Table Register (SFTR).

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agomlxsw: spectrum: move "bridged" bool to u8 flags
Jiri Pirko [Wed, 28 Oct 2015 09:16:56 +0000 (10:16 +0100)]
mlxsw: spectrum: move "bridged" bool to u8 flags

It is a flag anyway, so move it to existing u8 flag and don't waste mem.
Fix the flags to be in single u8 on the way.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoswitchdev: Make flood to CPU optional
Ido Schimmel [Wed, 28 Oct 2015 09:16:55 +0000 (10:16 +0100)]
switchdev: Make flood to CPU optional

In certain use cases it is not always desirable for the switch device to
flood traffic to CPU port. Instead, only certain packet types (e.g.
STP, LACP) should be trapped to it.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoswitchdev: Add support for flood control
Ido Schimmel [Wed, 28 Oct 2015 09:16:54 +0000 (10:16 +0100)]
switchdev: Add support for flood control

Allow devices supporting this feature to control the flooding of unknown
unicast traffic, by making switchdev infrastructure propagate this setting
to the switch driver.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'xgene_txrx_delay'
David S. Miller [Fri, 30 Oct 2015 03:21:57 +0000 (12:21 +0900)]
Merge branch 'xgene_txrx_delay'

Iyappan Subramanian says:

====================
drivers: xgene: Add support RGMII TX/RX delay configuration

X-Gene RGMII ethernet controller has a RGMII bridge that performs the
task of converting the RGMII signal {RX_CLK,RX_CTL, RX_DATA[3:0]} from
PHY to GMII signal {RX_DV,RX_ER,RX_DATA[7:0]} and vice versa.  This
RGMII bridge has a provision to internally delay the input RX_CLK and
the output TX_CLK using configuration registers. This will help in
maintain the CLK-CTL delay relationship in various operating
conditions.

This patch adds support RGMII TX/RX delay configuration.
====================

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoDocumentation: dts: xgene: Add TX/RX delay field
Iyappan Subramanian [Mon, 26 Oct 2015 22:25:16 +0000 (15:25 -0700)]
Documentation: dts: xgene: Add TX/RX delay field

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodrivers: net: xgene: Add support RGMII TX/RX delay configuration
Iyappan Subramanian [Mon, 26 Oct 2015 22:25:15 +0000 (15:25 -0700)]
drivers: net: xgene: Add support RGMII TX/RX delay configuration

Add RGMII TX/RX delay configuration support. RGMII standard requires 2ns
delay to help the RGMII bridge receiver to sample data correctly. If the
default value does not provide proper centering of the data sample, the
TX/RX delay parameters can be used to adjust accordingly.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobridge: set is_local and is_static before fdb entry is added to the fdb hashtable
Roopa Prabhu [Tue, 27 Oct 2015 14:52:56 +0000 (07:52 -0700)]
bridge: set is_local and is_static before fdb entry is added to the fdb hashtable

Problem Description:
We can add fdbs pointing to the bridge with NULL ->dst but that has a
few race conditions because br_fdb_insert() is used which first creates
the fdb and then, after the fdb has been published/linked, sets
"is_local" to 1 and in that time frame if a packet arrives for that fdb
it may see it as non-local and either do a NULL ptr dereference in
br_forward() or attach the fdb to the port where it arrived, and later
br_fdb_insert() will make it local thus getting a wrong fdb entry.
Call chain br_handle_frame_finish() -> br_forward():
But in br_handle_frame_finish() in order to call br_forward() the dst
should not be local i.e. skb != NULL, whenever the dst is
found to be local skb is set to NULL so we can't forward it,
and here comes the problem since it's running only
with RCU when forwarding packets it can see the entry before "is_local"
is set to 1 and actually try to dereference NULL.
The main issue is that if someone sends a packet to the switch while
it's adding the entry which points to the bridge device, it may
dereference NULL ptr. This is needed now after we can add fdbs
pointing to the bridge.  This poses a problem for
br_fdb_update() as well, while someone's adding a bridge fdb, but
before it has is_local == 1, it might get moved to a port if it comes
as a source mac and then it may get its "is_local" set to 1

This patch changes fdb_create to take is_local and is_static as
arguments to set these values in the fdb entry before it is added to the
hash. Also adds null check for port in br_forward.

Fixes: 3741873b4f73 ("bridge: allow adding of fdb entries pointing to the bridge device")
Reported-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agogeneve: add IPv6 bits to geneve_fill_metadata_dst
John W. Linville [Tue, 27 Oct 2015 13:49:00 +0000 (09:49 -0400)]
geneve: add IPv6 bits to geneve_fill_metadata_dst

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agogeneve: handle ipv6 priority like ipv4 tos
John W. Linville [Mon, 26 Oct 2015 21:01:45 +0000 (17:01 -0400)]
geneve: handle ipv6 priority like ipv4 tos

Other callers of udp_tunnel6_xmit_skb just pass 0 for the prio
argument.  Jesse Gross <jesse@nicira.com> suggested that prio is really
the same as IPv4's tos and should be handled the same, so this is my
interpretation of that suggestion.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Reported-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agogeneve: implement support for IPv6-based tunnels
John W. Linville [Mon, 26 Oct 2015 21:01:44 +0000 (17:01 -0400)]
geneve: implement support for IPv6-based tunnels

NOTE: Link-local IPv6 addresses for remote endpoints are not supported,
since the driver currently has no capacity for binding a geneve
interface to a specific link.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: hisilicon: updates HNS config and documents
yankejian [Tue, 27 Oct 2015 11:16:34 +0000 (19:16 +0800)]
net: hisilicon: updates HNS config and documents

updates the bindings documents and dtsi file according to the review
comments[https://lkml.org/lkml/2015/9/21/670] from Rob Herring <robh@kernel.org>

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: yankejian <yankejian@huawei.com>
Signed-off-by: huangdaode <huangdaode@hisilicon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: hns: fixes the bug tested XGE by ethtool -p
Li Peng [Tue, 27 Oct 2015 09:17:40 +0000 (17:17 +0800)]
net: hns: fixes the bug tested XGE by ethtool -p

delete action of ETHTOOL_ID_ON/ETHTOOL_ID_OFF in XGE ethtool -p,
so Hardware control the LED state instead of software.

Signed-off-by: Li Peng <lipeng321@huawei.com>
Signed-off-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: yankejian <yankejian@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agogianfar: Increase TX_TIMEOUT to 5HZ
Abhimanyu [Tue, 27 Oct 2015 08:47:43 +0000 (14:17 +0530)]
gianfar: Increase TX_TIMEOUT to 5HZ

Increased TX_TIMEOUT to 5HZ to accommodate worst case situation
for traffic and CPU intensive use cases

Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: Abhimanyu <abhimanyu@freescale.com>
Acked-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'wireless-drivers-next-for-davem-2015-10-27' of git://git.kernel.org/pub...
David S. Miller [Wed, 28 Oct 2015 02:56:56 +0000 (19:56 -0700)]
Merge tag 'wireless-drivers-next-for-davem-2015-10-27' of git://git./linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
here's a bigger pull request for 4.4. The diffstat looks scary as we
created a new directory realtek for all realtek drivers. In the future
I'm planning to create similar directories for all vendors, currently we
just have ath, mediatek and realtek. This change has been in linux-next
for a couple of weeks so it should be safe, but of course you never
know.

There's also a new driver rtl8xxxu for few realtek USB devices. This
just made it to the last linux-next build.

Otherwise there's nothing really special, more info below. If time
permits, and it's ok for you, I'm hoping to send you a one more pull
request this week.

brcmfmac

* using netdev carrier state
* add and rework some cfg80211 callbacks mainly for AP mode
* use devcoredump when triggered by firmware event

realtek

* create new directory drivers/net/wireless/realtek/ for all realtek
  drivers, not visible to users (no kconfig changes etc)
* add rtl8xxxu, a new mac80211 driver for RTL8723AU, RTL8188CU,
  RTL8188RU, RTL8191CU, RTL8192CU and hopefully more in the future

ath10k

* add board 2 API support for automatically choosing correct board file
* data path optimisations
* disable PCI power save for qca988x and QCA99x0 due to interop reasons

wil6210

* BlockAckReq support
* firmware crashdump using devcoredump
* capture all frames with sniffer
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoseccomp, ptrace: add support for dumping seccomp filters
Tycho Andersen [Tue, 27 Oct 2015 00:23:59 +0000 (09:23 +0900)]
seccomp, ptrace: add support for dumping seccomp filters

This patch adds support for dumping a process' (classic BPF) seccomp
filters via ptrace.

PTRACE_SECCOMP_GET_FILTER allows the tracer to dump the user's classic BPF
seccomp filters. addr should be an integer which represents the ith seccomp
filter (0 is the most recently installed filter). data should be a struct
sock_filter * with enough room for the ith filter, or NULL, in which case
the filter is not saved. The return value for this command is the number of
BPF instructions the program represents, or negative in the case of errors.
Command specific errors are ENOENT: which indicates that there is no ith
filter in this seccomp tree, and EMEDIUMTYPE, which indicates that the ith
filter was not installed as a classic BPF filter.

A caveat with this approach is that there is no way to get explicitly at
the heirarchy of seccomp filters, and users need to memcmp() filters to
decide which are inherited. This means that a task which installs two of
the same filter can potentially confuse users of this interface.

v2: * make save_orig const
    * check that the orig_prog exists (not necessary right now, but when
       grows eBPF support it will be)
    * s/n/filter_off and make it an unsigned long to match ptrace
    * count "down" the tree instead of "up" when passing a filter offset

v3: * don't take the current task's lock for inspecting its seccomp mode
    * use a 0x42** constant for the ptrace command value

v4: * don't copy to userspace while holding spinlocks

v5: * add another condition to WARN_ON

v6: * rebase on net-next

Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
CC: Will Drewry <wad@chromium.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
CC: Andy Lutomirski <luto@amacapital.net>
CC: Pavel Emelyanov <xemul@parallels.com>
CC: Serge E. Hallyn <serge.hallyn@ubuntu.com>
CC: Alexei Starovoitov <ast@kernel.org>
CC: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mpls-multipath-improvements'
David S. Miller [Wed, 28 Oct 2015 02:53:04 +0000 (19:53 -0700)]
Merge branch 'mpls-multipath-improvements'

Robert Shearman says:

====================
mpls: mulipath improvements

Two improvements to the recently added mpls multipath support. The
first is a fix for missing initialisation the nexthop address length
for the v4 and v6 explicit null label routes, and the second is to
reduce the amount of memory used by mpls routes by changing the way
the via addresses are stored.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agompls: reduce memory usage of routes
Robert Shearman [Tue, 27 Oct 2015 00:37:36 +0000 (00:37 +0000)]
mpls: reduce memory usage of routes

Nexthops for MPLS routes have a via address field sized for the
largest via address that is expected, which is 32 bytes. This means
that in the most common case of having ipv4 via addresses, 28 bytes of
memory more than required are used per nexthop. In the other common
case of an ipv6 nexthop then 16 bytes more than required are
used. With large numbers of MPLS routes this extra memory usage could
start to become significant.

To avoid allocating memory for a maximum length via address when not
all of it is required and to allow for ease of iterating over
nexthops, then the via addresses are changed to be stored in the same
memory block as the route and nexthops, but in an array after the end
of the array of nexthops. New accessors are provided to retrieve a
pointer to the via address.

To allow for O(1) access without having to store a pointer or offset
per nh, the via address for each nexthop is sized according to the
maximum via address for any nexthop in the route, which is stored in a
new route field, rt_max_alen, but this is in an existing hole in
struct mpls_route so it doesn't increase the size of the
structure. Each via address is ensured to be aligned to VIA_ALEN_ALIGN
to account for architectures that don't allow unaligned accesses.

Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agompls: fix forwarding using v4/v6 explicit null
Robert Shearman [Tue, 27 Oct 2015 00:37:35 +0000 (00:37 +0000)]
mpls: fix forwarding using v4/v6 explicit null

Fill in the via address length for the predefined IPv4 and IPv6
explicit-null label routes.

Fixes: f8efb73c97e2 ("mpls: multipath route support")
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agosfc: replace spinlocks with bit ops for busy poll locking
Bert Kenward [Mon, 26 Oct 2015 14:23:42 +0000 (14:23 +0000)]
sfc: replace spinlocks with bit ops for busy poll locking

This patch reduces the overhead of locking for busy poll.
Previously the state was protected by a lock, whereas now
it's manipulated solely with atomic operations.

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agosock: don't enable netstamp for af_unix sockets
Hannes Frederic Sowa [Mon, 26 Oct 2015 12:51:37 +0000 (13:51 +0100)]
sock: don't enable netstamp for af_unix sockets

netstamp_needed is toggled for all socket families if they request
timestamping. But some protocols don't need the lower-layer timestamping
code at all. This patch starts disabling it for af-unix.

E.g. systemd enables timestamping during boot-up on the journald af-unix
sockets, thus causing the system to globally enable timestamping in the
lower networking stack. Still, it is very probable that timestamping
gets activated, by e.g. dhclient or various NTP implementations.

Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'qed-driver'
David S. Miller [Wed, 28 Oct 2015 02:35:01 +0000 (19:35 -0700)]
Merge branch 'qed-driver'

Ariel Elior says:

====================
Add new drivers: qed & qede

This series implements the driver set for Qlogic's new QL4xxx series.
These are 10/20/25/40/50/100 Gig capable converged nics, supporting
ethernet (obviously), iscsi, fcoe, roce and iwarp protocols.

The overall driver design includes a common module ('qed') and protocol
specific dependent modules for ethernet ('qede'), fcoe ('qedf'),
iscsi ('qedi') and roce ('qedr').
The common module contains all of the common logic, e.g. initialization,
cleanup, infrastructure for interrupt handling, link management, slowpath
etc. as well as protocol agnostic features, and supplying an abstraction
layer for other modules.
The protocol specific modules can be compiled and operated independently
of each other, with the exception of the rdma modules which are dependent
on the ethernet module, in accordance with the kernel rdma stack design.

This series only adds the core and ethernet modules, with basic L2
capabilities. Future series will add the rest of the modules and enhance
the L2 functionality.

Ths patch series is constructed of the following patches:
qed:  Add module with basic common support
qed:  Add basic L2 interface
qede: Add basic Network driver
qed:  Add slowpath L2 support
qede: Add basic network device support
qede: Add classification configuration
qed:  Add link support
qede: Add support for link
qed:  Add statistics support
qede: Add basic ethtool support

This project is a team effort, thanks go to Yuval Mintz, Dmitry Kravkov,
Michal Kalderon, Tomer Tayar, Manish Chopra, Sudarsana Kalluru,
Rajesh Borundia, Sony Chacko, Artum Zolotushko, Harish Patil, Rasesh Mody,
Sergey Ukhterov and Elad Manela, as well as former team members,
Eilon Greenstein and Shmulik Ravid.

Changes from previos version:
-----------------------------

From Version 7:
  - Various small fixes according to Dave's suggestions; Largest change
    [code-wise] - don't use tabs for indenting function arguments.

From Version 6:
  - Reduced the number of arguments for functions with exceptionally
    high number of parameters.

From Version 5:
  - Style change and fixes [mostly in 1, 4 and 7].
    Thanks go to Francois Romieu, a mere mortal. ;-)

From Version 4:
  - Drop dependency for x86_64.

From Version 3:
  - Limit support of initial submission to x86_64.
  - Fix endian problems appearing via sparse [although no BE support yet].
  - Fix small issues suggested by the kbuild test robot.

From Version 2:
  - Removed U64_{HI,LO}; Using {upper,lower}_32_bits instead.
  - Use regular napi weight definition.
  - [We still use the __le variants for variables, since we didn't get
     a reply regarding the change into non-user API types].

From Version 1:
  - Removed private license file; Instead revised comments at source headers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqede: Add basic ethtool support
Sudarsana Kalluru [Mon, 26 Oct 2015 09:02:34 +0000 (11:02 +0200)]
qede: Add basic ethtool support

This adds basic ethtool operations to the qed driver, allowing support in:
 - Statistics gathering [ethtool -S]
 - Setting of debug level [ethtool -s <interface> msglvl]
 - Getting basic information [ethtool, ethtool -i]

In addition it adds the ability to change the MTU.

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqed: Add statistics support
Manish Chopra [Mon, 26 Oct 2015 09:02:33 +0000 (11:02 +0200)]
qed: Add statistics support

Device statistics can be gathered on-demand. This adds the qed support for
reading the statistics [both function and port] from the device, and adds
to the public API a method for requesting the current statistics.

Signed-off-by: Manish Chopra <Manish.Chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqede: Add support for link
Sudarsana Kalluru [Mon, 26 Oct 2015 09:02:32 +0000 (11:02 +0200)]
qede: Add support for link

This adds basic link functionality to qede - driver still doesn't provide
users with an API to change any link property, but it does request qed to
initialize the link using default configuration, and registers a callback
that allows it to get link notifications.

This patch adds the ability of the driver to set the carrier as active and
to enable traffic as a result of async. link notifications.
Following this patch, driver should be capable of running traffic.

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqed: Add link support
Yuval Mintz [Mon, 26 Oct 2015 09:02:31 +0000 (11:02 +0200)]
qed: Add link support

Physical link is handled by the management Firmware.
This patch lays the infrastructure for attention handling in the driver,
as link change notifications arrive via async. attentions,
as well the handling of such notifications.

This patch also extends the API with the protocol drivers by adding
registered callbacks which the protocol driver passes to qed in order
to be notified of async. events originating from the FW/HW.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqede: classification configuration
Sudarsana Kalluru [Mon, 26 Oct 2015 09:02:30 +0000 (11:02 +0200)]
qede: classification configuration

Add the ability to configure basic classification in driver by
implementing ndo_set_mac_address() and ndo_set_rx_mode().

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqede: Add basic network device support
Yuval Mintz [Mon, 26 Oct 2015 09:02:29 +0000 (11:02 +0200)]
qede: Add basic network device support

This patch includes the basic Rx/Tx support for the driver [although
carrier will still never be turned on].
Following this patch the driver registers a network device, initializes
it and prepares it for traffic.

Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqed: Add slowpath L2 support
Manish Chopra [Mon, 26 Oct 2015 09:02:28 +0000 (11:02 +0200)]
qed: Add slowpath L2 support

This patch adds to the qed the support to configure various L2 elements,
such as channels and basic filtering conditions.
It also enhances its public API to allow qede to later utilize this
functionality.

Signed-off-by: Manish Chopra <Manish.Chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqede: Add basic Network driver
Yuval Mintz [Mon, 26 Oct 2015 09:02:27 +0000 (11:02 +0200)]
qede: Add basic Network driver

The Qlogic Everest Driver for Ethernet is the Ethernet specific module for
QL4xxx ethernet products by Qlogic.

This patch adds a very minimal PCI driver, one that doesn't yet register
a network device, but one that does interact with qed and does a basic
initialization of the HW.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqed: Add basic L2 interface
Yuval Mintz [Mon, 26 Oct 2015 09:02:26 +0000 (11:02 +0200)]
qed: Add basic L2 interface

This patch adds a public API for a network driver to work on top of QED.
The interface itself is very minimal - it's mostly infrastructure, as the
only content it has after this patch is a query for HW-based information
required for the creation of a network interface [I.e., no actual
protocol-specific configurations are supported].

Signed-off-by: Manish Chopra <Manish.Chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoqed: Add module with basic common support
Yuval Mintz [Mon, 26 Oct 2015 09:02:25 +0000 (11:02 +0200)]
qed: Add module with basic common support

The Qlogic Everest Driver is the backend module for the QL4xxx ethernet
products by Qlogic.

This module serves two main purposes:
 1. It's responsible to contain all the common code that will be shared
    between the various drivers that would be used with said line of
    products. Flows such as chip initialization and de-initialization
    fall under this category.

 2. It would abstract the protocol-specific HW & FW components, allowing
    the protocol drivers to have a clean APIs which is detached in its
    slowpath configuration from the actual HSI.

This adds a very basic module without any protocol-specific bits.
I.e., this adds a basic implementation that almost entirely falls under
the first category.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobluetooth: 6lowpan: fix NOHZ: local_softirq_pending
Alexander Aring [Tue, 27 Oct 2015 07:35:24 +0000 (08:35 +0100)]
bluetooth: 6lowpan: fix NOHZ: local_softirq_pending

Jukka reported about the following warning:

"NOHZ: local_softirq_pending 08"

I remember this warning and we had a similar issue when using workqueues
and calling netif_rx. See commit 5ff3fec ("mac802154: fix NOHZ
local_softirq_pending 08 warning").

This warning occurs when calling "netif_rx" inside the wrong context
(non softirq context). The net core api offers "netif_rx_ni" to call
netif_rx inside the correct softirq context.

Reported-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agonet: tso: add support for IPv6
emmanuel.grumbach@intel.com [Mon, 26 Oct 2015 08:31:29 +0000 (10:31 +0200)]
net: tso: add support for IPv6

Adding IPv6 for the TSO helper API is trivial:
* Don't play with the id (which doesn't exist in IPv6)
* Correctly update the payload_len (don't include the
  length of the IP header itself)

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'arcnet-for-4.4-rc1' of git://git.pengutronix.de/git/mgr/linux
David S. Miller [Tue, 27 Oct 2015 05:16:02 +0000 (22:16 -0700)]
Merge tag 'arcnet-for-4.4-rc1' of git://git.pengutronix.de/git/mgr/linux

Michael Grzeschik says:

====================
This series includes code simplifaction. The main changes are the correct
xceiver handling (enable/disable) of the com20020 cards. The driver now handles
link status change detection. The EAE PCI-ARCNET cards now make use of the
rotary encoded subdevice indexing and got support for led triggers on transmit
and reconnection events.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoBluetooth: Fix crash on fast disconnect of SCO
Kuba Pawlak [Mon, 26 Oct 2015 16:17:14 +0000 (16:17 +0000)]
Bluetooth: Fix crash on fast disconnect of SCO

Fix a crash that may happen when a connection is closed before it was fully
established. Mapping conn->hcon was released by shutdown function, but it
is still referenced in (not yet finished) connection established handling
function.

[ 4635.254073] BUG: unable to handle kernel NULL pointer dereference at 00000013
[ 4635.262058] IP: [<c11659f0>] memcmp+0xe/0x25
[ 4635.266835] *pdpt = 0000000024190001 *pde = 0000000000000000
[ 4635.273261] Oops: 0000 [#1] PREEMPT SMP
[ 4635.277652] Modules linked in: evdev ecb vfat fat libcomposite usb2380 isofs zlib_inflate rfcomm(O) udc_core bnep(O) btusb(O) btbcm(O) btintel(O) bluetooth(O) cdc_acm arc4 uinput hid_mule
[ 4635.321761] Pid: 363, comm: kworker/u:2H Tainted: G           O 3.8.0-119.1-plk-adaptation-byt-ivi-brd #1
[ 4635.332642] EIP: 0060:[<c11659f0>] EFLAGS: 00010206 CPU: 0
[ 4635.338767] EIP is at memcmp+0xe/0x25
[ 4635.342852] EAX: e4720678 EBX: 00000000 ECX: 00000006 EDX: 00000013
[ 4635.349849] ESI: 00000000 EDI: fb85366c EBP: e40c7dc0 ESP: e40c7db4
[ 4635.356846]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 4635.362873] CR0: 8005003b CR2: 00000013 CR3: 24191000 CR4: 001007f0
[ 4635.369869] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 4635.376865] DR6: ffff0ff0 DR7: 00000400
[ 4635.381143] Process kworker/u:2H (pid: 363, ti=e40c6000 task=e40c5510 task.ti=e40c6000)
[ 4635.390080] Stack:
[ 4635.392319]  e4720400 00000000 fb85366c e40c7df4 fb842285 e40c7de2 fb853200 00000013
[ 4635.401003]  e3f101c4 e4720678 e3f101c0 e403be0a e40c7dfc e416a000 e403be0a fb85366c
[ 4635.409692]  e40c7e1c fb820186 020f6c00 e47c49ac e47c4008 00000000 e416a000 e47c402c
[ 4635.418380] Call Trace:
[ 4635.421153]  [<fb842285>] sco_connect_cfm+0xff/0x236 [bluetooth]
[ 4635.427893]  [<fb820186>] hci_sync_conn_complete_evt.clone.101+0x227/0x268 [bluetooth]
[ 4635.436758]  [<fb82370f>] hci_event_packet+0x1caa/0x21d3 [bluetooth]
[ 4635.443859]  [<c106231f>] ? trace_hardirqs_on+0xb/0xd
[ 4635.449502]  [<c1375b8a>] ? _raw_spin_unlock_irqrestore+0x42/0x59
[ 4635.456340]  [<fb814b67>] hci_rx_work+0xb9/0x350 [bluetooth]
[ 4635.462663]  [<c1039f1e>] ? process_one_work+0x17b/0x2e6
[ 4635.468596]  [<c1039f77>] process_one_work+0x1d4/0x2e6
[ 4635.474333]  [<c1039f1e>] ? process_one_work+0x17b/0x2e6
[ 4635.480294]  [<fb814aae>] ? hci_cmd_work+0xda/0xda [bluetooth]
[ 4635.486810]  [<c103a3fa>] worker_thread+0x171/0x20f
[ 4635.492257]  [<c10456c5>] ? complete+0x34/0x3e
[ 4635.497219]  [<c103ea06>] kthread+0x90/0x95
[ 4635.501888]  [<c103a289>] ? manage_workers+0x1df/0x1df
[ 4635.507628]  [<c1376537>] ret_from_kernel_thread+0x1b/0x28
[ 4635.513755]  [<c103e976>] ? __init_kthread_worker+0x42/0x42
[ 4635.519975] Code: 74 0d 3c 79 74 04 3c 59 75 0c c6 02 01 eb 03 c6 02 00 31 c0 eb 05 b8 ea ff ff ff 5d c3 55 89 e5 57 56 53 31 db eb 0e 0f b6 34 18 <0f> b6 3c 1a 43 29 fe 75 07 49 85 c9 7f
[ 4635.541264] EIP: [<c11659f0>] memcmp+0xe/0x25 SS:ESP 0068:e40c7db4
[ 4635.548166] CR2: 0000000000000013
[ 4635.552177] ---[ end trace e05ce9b8ce6182f6 ]---

Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoipv6: icmp: include addresses in debug messages
Bjørn Mork [Sat, 24 Oct 2015 12:00:20 +0000 (14:00 +0200)]
ipv6: icmp: include addresses in debug messages

Messages like "icmp6_send: no reply to icmp error" are close
to useless. Adding source and destination addresses to provide
some more clue.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobpf: make tracing helpers gpl only
Alexei Starovoitov [Fri, 23 Oct 2015 21:58:19 +0000 (14:58 -0700)]
bpf: make tracing helpers gpl only

exported perf symbols are GPL only, mark eBPF helper functions
used in tracing as GPL only as well.

Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobpf: fix bpf_perf_event_read() helper
Alexei Starovoitov [Fri, 23 Oct 2015 00:10:14 +0000 (17:10 -0700)]
bpf: fix bpf_perf_event_read() helper

Fix safety checks for bpf_perf_event_read():
- only non-inherited events can be added to perf_event_array map
  (do this check statically at map insertion time)
- dynamically check that event is local and !pmu->count
Otherwise buggy bpf program can cause kernel splat.

Also fix error path after perf_event_attrs()
and remove redundant 'extern'.

Fixes: 35578d798400 ("bpf: Implement function bpf_perf_event_read() that get the selected hardware PMU conuter")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: dsa: bcm_sf2: Unhardcode port numbers
Florian Fainelli [Fri, 23 Oct 2015 19:11:08 +0000 (12:11 -0700)]
net: dsa: bcm_sf2: Unhardcode port numbers

While the current driver mostly supports BCM7445 which has a hardcoded
location for its MoCA port on port 7 and port 0 for its internal PHY,
this is not necessarily true for all other chips out there such as
BCM3390 for instance.

Walk the list of ports from Device Tree, get their port number ("reg"
property), and then parse the "phy-mode" property and initialize two
internal variables: moca_port and a bitmask of internal PHYs. Since we
use interrupts for the MoCA port, we introduce two helper functions to
enable/disable interrupts and do this at the appropriate bank (INTRL2_0
or INTRL2_1).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: dsa: bcm_sf2: Implement FDB operations
Florian Fainelli [Fri, 23 Oct 2015 18:38:07 +0000 (11:38 -0700)]
net: dsa: bcm_sf2: Implement FDB operations

Add support for the FDB add, delete, and dump operations. The add and
delete operations are implemented using directed ARL operations using
the specified MAC address and consist in a read operation, write and
readback operation.

The dump operation consists in using the ARL search and software
filtering entries which are not for the desired port.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agortl8xxxu: fix unused rtl8192cu_fops compiler warning
Kalle Valo [Sun, 25 Oct 2015 16:24:38 +0000 (18:24 +0200)]
rtl8xxxu: fix unused rtl8192cu_fops compiler warning

kbuild reported:

rtl8xxxu.c:5786:32: warning: â€˜rtl8192cu_fops’ defined but not used [-Wunused-variable]

Fix it by adding temporary ifdefs around the static functions.

Fixes: 033695bdf6d7 ("rtl8xxxu: move devices supported by rtlwifi under UNTESTED config")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
9 years agoarcnet: add netif_carrier_on/off for reconnect
Michael Grzeschik [Wed, 16 Sep 2015 08:15:45 +0000 (10:15 +0200)]
arcnet: add netif_carrier_on/off for reconnect

The arcnet device has no interrupt to detect if the link has changed
from disconnected to connected. This patch adds an timer to toggle the
link detection. The timer will get retriggered as long as the
reconnection interrupts accure. If the recon interrupts hold off
for >1s we define the connection stable again.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
9 years agoarcnet: com20020-pci: add led trigger support
Michael Grzeschik [Wed, 17 Sep 2014 22:12:50 +0000 (00:12 +0200)]
arcnet: com20020-pci: add led trigger support

The EAE PLX-PCI card has special leds on the the main io pci resource
bar. This patch adds support to trigger the conflict and data leds with
the packages.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
9 years agoarcnet: com20020-pci: add rotary index support
Michael Grzeschik [Wed, 17 Sep 2014 22:12:50 +0000 (00:12 +0200)]
arcnet: com20020-pci: add rotary index support

The EAE PLX-PCI card has a special rotary encoder
to configure the address of every card individually.
We take this information for the initial setup of
the cards dev_id.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
9 years agoarcnet: com20020-pci: set dev_port to the subdevice index
Michael Grzeschik [Fri, 20 Mar 2015 14:22:24 +0000 (15:22 +0100)]
arcnet: com20020-pci: set dev_port to the subdevice index

This patch sets the dev_port according to the index of
the card. This can be used by udev to name the ports
in userspace.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
9 years agoarcnet: com20020: add enable and disable device on open/close
Michael Grzeschik [Fri, 20 Mar 2015 14:20:59 +0000 (15:20 +0100)]
arcnet: com20020: add enable and disable device on open/close

This patch changes the driver to properly work with the linux netif
interface. The controller gets enabled on open and disabled on close.
Therefor it removes every bogus start of the xceiver. It only gets
enabled on com20020_open and disabled on com20020_close.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
9 years agoarcnet: move dev_free_skb to its only user
Michael Grzeschik [Wed, 22 Apr 2015 14:41:46 +0000 (16:41 +0200)]
arcnet: move dev_free_skb to its only user

The call for dev_free_skb is done only once. This patch
moves its call to its only user and removes the obsolete
condition variable.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
9 years agoBluetooth: Fix some obvious coding style issues in the SCO module
Marcel Holtmann [Mon, 26 Oct 2015 01:08:38 +0000 (02:08 +0100)]
Bluetooth: Fix some obvious coding style issues in the SCO module

Lets fix this obvious coding style issues in the SCO module and bring it
in line with the rest of the Bluetooth subsystem.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
9 years agoBluetooth: Replace hci_notify with hci_sock_dev_event
Marcel Holtmann [Sun, 25 Oct 2015 22:29:22 +0000 (23:29 +0100)]
Bluetooth: Replace hci_notify with hci_sock_dev_event

There is no point in wrapping hci_sock_dev_event around hci_notify. It
is an empty wrapper which adds no value. So remove it.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
9 years agoBluetooth: Rename bt_cb()->req into bt_cb()->hci
Marcel Holtmann [Sun, 25 Oct 2015 21:45:53 +0000 (22:45 +0100)]
Bluetooth: Rename bt_cb()->req into bt_cb()->hci

The SKB context buffer for HCI request is really not just for requests,
information in their are preserved for the whole HCI layer. So it makes
more sense to actually rename it into bt_cb()->hci and also call it then
struct hci_ctrl.

In addition that allows moving the decoded opcode for outgoing packets
into that struct. So far it was just consuming valuable space from the
main shared items. And opcode are not valid for L2CAP packets.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
9 years agoBluetooth: Remove unneeded parenthesis around MSG_OOB
Marcel Holtmann [Sun, 25 Oct 2015 21:45:18 +0000 (22:45 +0100)]
Bluetooth: Remove unneeded parenthesis around MSG_OOB

There are two checks that are still using (MSG_OOB) instead of just
MSG_OOB and so lets just fix them.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
9 years agobnxt_en: Fix compile warnings when CONFIG_INET is not set.
Michael Chan [Mon, 26 Oct 2015 02:27:57 +0000 (22:27 -0400)]
bnxt_en: Fix compile warnings when CONFIG_INET is not set.

bnxt_gro_skb() has unused variables when CONFIG_INET is not set.  We
really cannot support hardware GRO if CONFIG_INET is not set, so
compile out bnxt_gro_skb() completely and define BNXT_FLAG_GRO to be 0
if CONFIG_INET is not set.  This will effectively always disable
hardware GRO if CONFIG_INET is not set.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: encx24j600: Fix mask to update LED configuration
Jon Ringle [Thu, 22 Oct 2015 19:09:04 +0000 (15:09 -0400)]
net: encx24j600: Fix mask to update LED configuration

This fixes the mask used to update the LED configuration so that it clears
the necessary bits as well as setting the bits according to the mask.
Also reverse the LED configuration to show the Link state + collisions in
LEDA and the Link state + TX/RX events in LEDB.

Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mvneta-ethtool-stats'
David S. Miller [Mon, 26 Oct 2015 01:20:41 +0000 (18:20 -0700)]
Merge branch 'mvneta-ethtool-stats'

Russell King says:

====================
mvneta ethtool statistics

Sorry for v3 - I forgot to update the commit message on patch 1 as
requested by Marcin.

This short series adds ethtool statistics reporting to mvneta.  Having
discussed with Andrew on IRC, we decided I'd pick up his patch into my
series.

My change for patch 1 compared to the previous RFC splits out the
reading of the statistics from the hardware into a separate function,
in order to facilitate work going on elsewhere to arrange for the
statistics to be preserved across a suspend/resume cycle.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: mvneta: Fix clearing of MIB statistics
Andrew Lunn [Thu, 22 Oct 2015 17:37:36 +0000 (18:37 +0100)]
net: mvneta: Fix clearing of MIB statistics

The existing function to clear the MIB statatistics was using the
wrong address for the registers. Also, the counters would of been
cleared when the interface was brought up, not during the
probe. Fix both of these.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: mvneta: add ethtool statistics
Russell King [Thu, 22 Oct 2015 17:37:30 +0000 (18:37 +0100)]
net: mvneta: add ethtool statistics

Add support for the ethtool statistic interface, returning the full set
of statistics which both Armada 370, 38x and Armada XP can support.

Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoBluetooth: Fix locking issue during fast SCO reconnection.
Kuba Pawlak [Mon, 5 Oct 2015 16:44:17 +0000 (18:44 +0200)]
Bluetooth: Fix locking issue during fast SCO reconnection.

When SCO connection is requested and disconnected fast, there is a change
that sco_sock_shutdown is going to preempt thread started in sco_connect_cfm.
When this happens struct sock sk may be removed but a pointer to it is still
held in sco_conn_ready, where embedded spinlock is used. If it is used, but
struct sock has been removed, it will crash.

Block connection object, which will prevent struct sock from being removed
and give connection process chance to finish.

BUG: spinlock bad magic on CPU#0, kworker/u:2H/319
 lock: 0xe3e99434, .magic: f3000000, .owner: (���/0, .owner_cpu: -203804160
Pid: 319, comm: kworker/u:2H Tainted: G           O 3.8.0-115.1-plk-adaptation-byt-ivi-brd #1
Call Trace:
 [<c1155659>] ? do_raw_spin_lock+0x19/0xe9
 [<fb75354f>] ? sco_connect_cfm+0x92/0x236 [bluetooth]
 [<fb731dbc>] ? hci_sync_conn_complete_evt.clone.101+0x18b/0x1cb [bluetooth]
 [<fb734ee7>] ? hci_event_packet+0x1acd/0x21a6 [bluetooth]
 [<c1041095>] ? finish_task_switch+0x50/0x89
 [<c1349a2e>] ? __schedule+0x638/0x6b8
 [<fb727918>] ? hci_rx_work+0xb9/0x2b8 [bluetooth]
 [<c103760a>] ? queue_delayed_work_on+0x21/0x2a
 [<c1035df9>] ? process_one_work+0x157/0x21b
 [<fb72785f>] ? hci_cmd_work+0xef/0xef [bluetooth]
 [<c1036217>] ? worker_thread+0x16e/0x20a
 [<c10360a9>] ? manage_workers+0x1cf/0x1cf
 [<c103a0ef>] ? kthread+0x8d/0x92
 [<c134adf7>] ? ret_from_kernel_thread+0x1b/0x28
 [<c103a062>] ? __init_kthread_worker+0x24/0x24
BUG: unable to handle kernel NULL pointer dereference at   (null)
IP: [<  (null)>]   (null)
*pdpt = 00000000244e1001 *pde = 0000000000000000
Oops: 0010 [#1] PREEMPT SMP
Modules linked in: evdev ecb rfcomm(O) libcomposite usb2380 udc_core bnep(O) btusb(O) btbcm(O) cdc_acm btintel(O) bluetooth(O) arc4 uinput hid_multitouch usbhid hid iwlmvm(O)e
Pid: 319, comm: kworker/u:2H Tainted: G           O 3.8.0-115.1-plk-adaptation-byt-ivi-brd #1
EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 0
EIP is at 0x0
EAX: e3e99400 EBX: e3e99400 ECX: 00000100 EDX: 00000000
ESI: e3e99434 EDI: fb763ce0 EBP: e49b9e44 ESP: e49b9e14
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0: 8005003b CR2: 00000000 CR3: 24444000 CR4: 001007f0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
Process kworker/u:2H (pid: 319, ti=e49b8000 task=e4ab9030 task.ti=e49b8000)
Stack:
 fb75355b 00000246 fb763900 22222222 22222222 22222222 e3f94460 e3ca7c0a
 e49b9e4c e3f34c00 e3ca7c0a fb763ce0 e49b9e6c fb731dbc 02000246 e4cec85c
 e4cec008 00000000 e3f34c00 e4cec000 e3c2ce00 0000002c e49b9ed0 fb734ee7
Call Trace:
 [<fb75355b>] ? sco_connect_cfm+0x9e/0x236 [bluetooth]
 [<fb731dbc>] ? hci_sync_conn_complete_evt.clone.101+0x18b/0x1cb [bluetooth]
 [<fb734ee7>] ? hci_event_packet+0x1acd/0x21a6 [bluetooth]
 [<c1041095>] ? finish_task_switch+0x50/0x89
 [<c1349a2e>] ? __schedule+0x638/0x6b8
 [<fb727918>] ? hci_rx_work+0xb9/0x2b8 [bluetooth]
 [<c103760a>] ? queue_delayed_work_on+0x21/0x2a
 [<c1035df9>] ? process_one_work+0x157/0x21b
 [<fb72785f>] ? hci_cmd_work+0xef/0xef [bluetooth]
 [<c1036217>] ? worker_thread+0x16e/0x20a
 [<c10360a9>] ? manage_workers+0x1cf/0x1cf
 [<c103a0ef>] ? kthread+0x8d/0x92
 [<c134adf7>] ? ret_from_kernel_thread+0x1b/0x28
 [<c103a062>] ? __init_kthread_worker+0x24/0x24
Code:  Bad EIP value.
EIP: [<00000000>] 0x0 SS:ESP 0068:e49b9e14
CR2: 0000000000000000
---[ end trace 942a6577c0abd725 ]---

Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoBluetooth: Fix locking issue on SCO disconnection
Kuba Pawlak [Mon, 5 Oct 2015 16:44:16 +0000 (18:44 +0200)]
Bluetooth: Fix locking issue on SCO disconnection

Thread handling SCO disconnection may get preempted in '__sco_sock_close'
after dropping a reference to hci_conn but before marking this as NULL
in associated struct sco_conn. When execution returs to this thread,
this connection will possibly be released, resulting in kernel crash

Lock connection before this point.

BUG: unable to handle kernel NULL pointer dereference at   (null)
IP: [<fb770ab9>] __sco_sock_close+0x194/0x1ff [bluetooth]
*pdpt = 0000000023da6001 *pde = 0000000000000000
Oops: 0002 [#1] PREEMPT SMP
Modules linked in: evdev ecb rfcomm(O) libcomposite usb2380 udc_core bnep(O) btusb(O) btbcm(O) cdc_acm btintel(O) bluetooth(O) arc4 uinput hid_multitouch usbhid iwlmvm(O) hide
Pid: 984, comm: bluetooth Tainted: G           O 3.8.0-115.1-plk-adaptation-byt-ivi-brd #1
EIP: 0060:[<fb770ab9>] EFLAGS: 00010282 CPU: 2
EIP is at __sco_sock_close+0x194/0x1ff [bluetooth]
EAX: 00000000 EBX: e49d7600 ECX: ef1ec3c2 EDX: 000000c3
ESI: e4c12000 EDI: 00000000 EBP: ef1edf5c ESP: ef1edf4c
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
CR0: 80050033 CR2: 00000000 CR3: 23da7000 CR4: 001007f0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
Process bluetooth (pid: 984, ti=ef1ec000 task=e47f2550 task.ti=ef1ec000)
Stack:
 e4c120d0 e49d7600 00000000 08421a40 ef1edf70 fb770b7a 00000002 e8a4cc80
 08421a40 ef1ec000 c12966b1 00000001 00000000 0000000b 084954c8 c1296b6c
 0000001b 00000002 0000001b 00000002 00000000 00000002 b2524880 00000046
Call Trace:
 [<fb770b7a>] ? sco_sock_shutdown+0x56/0x95 [bluetooth]
 [<c12966b1>] ? sys_shutdown+0x37/0x53
 [<c1296b6c>] ? sys_socketcall+0x12e/0x1be
 [<c134ae7e>] ? sysenter_do_call+0x12/0x26
 [<c1340000>] ? ip_vs_control_net_cleanup+0x46/0xb1
Code: e8 90 6b 8c c5 f6 05 72 5d 78 fb 04 74 17 8b 46 08 50 56 68 0a fd 77 fb 68 60 5d 78 fb e8 68 95 9e c5 83 c4 10 8b 83 fc 01 00 00 <c7> 00 00 00 00 00 eb 32 ba 68 00 00 0b
EIP: [<fb770ab9>] __sco_sock_close+0x194/0x1ff [bluetooth] SS:ESP 0068:ef1edf4c
CR2: 0000000000000000
---[ end trace 47fa2f55a9544e69 ]---

Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoBluetooth: Fix crash on SCO disconnect
Kuba Pawlak [Mon, 5 Oct 2015 16:44:15 +0000 (18:44 +0200)]
Bluetooth: Fix crash on SCO disconnect

When disconnecting audio from the phone's side, it may happen, that
a thread handling HCI message 'disconnection complete' will get preempted
in 'sco_conn_del' before calling 'sco_sock_kill', still holding a pointer
to struct sock sk. Interrupting thread started in 'sco_sock_shutdown' will
carry on releasing resources and will eventually release struct sock.
When execution goes back to first thread it will call sco_sock_kill using
now invalid pointer to already destroyed socket.

Fix is to grab a reference to the socket a release it after calling
'sco_sock_kill'.

[  166.358213] BUG: unable to handle kernel paging request at 7541203a
[  166.365228] IP: [<fb6e8bfb>] bt_sock_unlink+0x1a/0x38 [bluetooth]
[  166.372068] *pdpt = 0000000024b19001 *pde = 0000000000000000
[  166.378483] Oops: 0002 [#1] PREEMPT SMP
[  166.382871] Modules linked in: evdev ecb rfcomm(O) libcomposite usb2380 udc_core bnep(O) btusb(O) btbcm(O) btintel(O) cdc_acm bluetooth(O) arc4 uinput hid_multitouch iwlmvm(O) usbhid hide
[  166.424233] Pid: 338, comm: kworker/u:2H Tainted: G           O 3.8.0-115.1-plk-adaptation-byt-ivi-brd #1
[  166.435112] EIP: 0060:[<fb6e8bfb>] EFLAGS: 00010206 CPU: 0
[  166.441259] EIP is at bt_sock_unlink+0x1a/0x38 [bluetooth]
[  166.447382] EAX: 632e6563 EBX: e4bfc600 ECX: e466d4d3 EDX: 7541203a
[  166.454369] ESI: fb7278ac EDI: e4d52000 EBP: e4669e20 ESP: e4669e0c
[  166.461366]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[  166.467391] CR0: 8005003b CR2: 7541203a CR3: 24aba000 CR4: 001007f0
[  166.474387] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[  166.481375] DR6: ffff0ff0 DR7: 00000400
[  166.485654] Process kworker/u:2H (pid: 338, ti=e4668000 task=e466e030 task.ti=e4668000)
[  166.494591] Stack:
[  166.496830]  e4bfc600 e4bfc600 fb715c28 e4717ee0 e4d52000 e4669e3c fb715cf3 e4bfc634
[  166.505518]  00000068 e4d52000 e4c32000 fb7277c0 e4669e6c fb6f2019 0000004a 00000216
[  166.514205]  e4660101 e4c32008 02000001 00000013 e4d52000 e4c32000 e3dc9240 00000005
[  166.522891] Call Trace:
[  166.525654]  [<fb715c28>] ? sco_sock_kill+0x73/0x9a [bluetooth]
[  166.532295]  [<fb715cf3>] ? sco_conn_del+0xa4/0xbf [bluetooth]
[  166.538836]  [<fb6f2019>] ? hci_disconn_complete_evt.clone.55+0x1bd/0x205 [bluetooth]
[  166.547609]  [<fb6f73d3>] ? hci_event_packet+0x297/0x223c [bluetooth]
[  166.554805]  [<c10416da>] ? dequeue_task+0xaf/0xb7
[  166.560154]  [<c1041095>] ? finish_task_switch+0x50/0x89
[  166.566086]  [<c1349a2e>] ? __schedule+0x638/0x6b8
[  166.571460]  [<fb6eb906>] ? hci_rx_work+0xb9/0x2b8 [bluetooth]
[  166.577975]  [<c1035df9>] ? process_one_work+0x157/0x21b
[  166.583933]  [<fb6eb84d>] ? hci_cmd_work+0xef/0xef [bluetooth]
[  166.590448]  [<c1036217>] ? worker_thread+0x16e/0x20a
[  166.596088]  [<c10360a9>] ? manage_workers+0x1cf/0x1cf
[  166.601826]  [<c103a0ef>] ? kthread+0x8d/0x92
[  166.606691]  [<c134adf7>] ? ret_from_kernel_thread+0x1b/0x28
[  166.613010]  [<c103a062>] ? __init_kthread_worker+0x24/0x24
[  166.619230] Code: 85 63 ff ff ff 31 db 8d 65 f4 89 d8 5b 5e 5f 5d c3 56 8d 70 04 53 89 f0 89 d3 e8 7e 17 c6 c5 8b 53 28 85 d2 74 1a 8b 43 24 85 c0 <89> 02 74 03 89 50 04 c7 43 28 00 00 00
[  166.640501] EIP: [<fb6e8bfb>] bt_sock_unlink+0x1a/0x38 [bluetooth] SS:ESP 0068:e4669e0c
[  166.649474] CR2: 000000007541203a
[  166.653420] ---[ end trace 0181ff2c9e42d51e ]---
[  166.658609] note: kworker/u:2H[338] exited with preempt_count 1

Signed-off-by: Kuba Pawlak <kubax.t.pawlak@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoBluetooth: btmrvl: add missing of_node_put
Julia Lawall [Sat, 24 Oct 2015 14:42:32 +0000 (16:42 +0200)]
Bluetooth: btmrvl: add missing of_node_put

for_each_compatible_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression e;
local idexpression n;
@@

 for_each_compatible_node(n, ...) {
   ... when != of_node_put(n)
       when != e = n
(
   return n;
|
+  of_node_put(n);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoaf_unix: do not report POLLOUT on listeners
Eric Dumazet [Fri, 23 Oct 2015 17:59:16 +0000 (10:59 -0700)]
af_unix: do not report POLLOUT on listeners

poll(POLLOUT) on a listener should not report fd is ready for
a write().

This would break some applications using poll() and pfd.events = -1,
as they would not block in poll()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Alan Burlison <Alan.Burlison@oracle.com>
Tested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: link_is_bc_sndlink() can be static
Wu Fengguang [Sat, 24 Oct 2015 14:56:01 +0000 (22:56 +0800)]
tipc: link_is_bc_sndlink() can be static

TO: "David S. Miller" <davem@davemloft.net>
CC: netdev@vger.kernel.org
CC: Jon Maloy <jon.maloy@ericsson.com>
CC: Ying Xue <ying.xue@windriver.com>
CC: tipc-discussion@lists.sourceforge.net
CC: linux-kernel@vger.kernel.org
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'tipc-next'
David S. Miller [Sat, 24 Oct 2015 13:56:54 +0000 (06:56 -0700)]
Merge branch 'tipc-next'

Jon Maloy says:

====================
tipc: improve broadcast implementation

The TIPC broadcast link implementation is currently complex and hard to
follow. It also incurs some amount of code and structure duplication,
something that can be reduced significantly with a little effort.

This commit series introduces a number of improvements which address
both the locking structure, the code/structure duplication issue, and
the overall readbility of the code.

The series consists of three main parts:

1-7: Adaptation to the new link structure, and preparation for the next
     step. In particular, we want the broadcast transmission link to
     have a life cycle that is longer than any of its potential (unicast
     and broadcast receive links) users. This eliminates the need to
     always test for the presence of this link before accessing it.

8-10: This is what is really new in this series. Commit #9 is by far
      the largest and most important one, because it moves most of
      the broadcast functionality into link.c, partially reusing the
      fields and functionality of the unicast link. The removal of
      the "node_map" infrastructure in commit #10 is also an important
      achievement.

11-16: Some improvements leveraging the changes made in the previous
       commits.

The series needs commit 53387c4e22ac ("tipc: extend broadcast link window size")
and commit e53567948f82 ("tipc: conditionally expand buffer headroom over udp tunnel")
which are both present in 'net' but not yet in 'net-next', to apply cleanly.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: clean up unused code and structures
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:48 +0000 (08:51 -0400)]
tipc: clean up unused code and structures

After the previous changes in this series, we can now remove some
unused code and structures, both in the broadcast, link aggregation
and link code.

There are no functional changes in this commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: ensure binding table initial distribution is sent via first link
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:47 +0000 (08:51 -0400)]
tipc: ensure binding table initial distribution is sent via first link

Correct synchronization of the broadcast link at first contact between
two nodes is dependent on the assumption that the binding table "bulk"
update passes via the same link as the initial broadcast syncronization
message, i.e., via the first link that is established.

This is not guaranteed in the current implementation. If two link
come up very close to each other in time, the "bulk" may quite well
pass via the second link, and hence void the guarantee of a correct
initial synchronization before the broadcast link is opened.

This commit makes two small changes to strengthen this guarantee.

1) We let the second established link occupy slot 1 of the
   "active_links" array, while the first link will retain slot 0.
   (This is in reality a cosmetic change, we could just as well keep
    the current, opposite order)

2) We let the name distributor always use link selector/slot 0 when
   it sends it binding table updates.

The extra traffic bias on the first link caused by this change should
be negligible, since binding table updates constitutes a very small
fraction of the total traffic.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: eliminate link's reference to owner node
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:46 +0000 (08:51 -0400)]
tipc: eliminate link's reference to owner node

With the recent commit series, we have established a one-way dependency
between the link aggregation (struct tipc_node) instances and their
pertaining tipc_link instances. This has enabled quite significant code
and structure simplifications.

In this commit, we eliminate the field 'owner', which points to an
instance of struct tipc_node, from struct tipc_link, and replace it with
a pointer to struct net, which is the only external reference now needed
by a link instance.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: eliminate redundant buffer cloning at transmission
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:45 +0000 (08:51 -0400)]
tipc: eliminate redundant buffer cloning at transmission

Since all packet transmitters (link, bcast, discovery) are now sending
consumable buffer clones to the bearer layer, we can remove the
redundant buffer cloning that is perfomed in the lower level functions
tipc_l2_send_msg() and tipc_udp_send_msg().

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: let neighbor discoverer tranmsit consumable buffers
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:44 +0000 (08:51 -0400)]
tipc: let neighbor discoverer tranmsit consumable buffers

The neighbor discovery function currently uses the function
tipc_bearer_send() for transmitting packets, assuming that the
sent buffers are not consumed by the called function.

We want to change this, in order to avoid unnecessary buffer cloning
elswhere in the code.

This commit introduces a new function tipc_bearer_skb() which consumes
the sent buffers, and let the discoverer functions use this new call
instead. The discoverer does now itself perform the cloning when
that is necessary.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: introduce jumbo frame support for broadcast
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:43 +0000 (08:51 -0400)]
tipc: introduce jumbo frame support for broadcast

Until now, we have only been supporting a fix MTU size of 1500 bytes
for all broadcast media, irrespective of their actual capability.

We now make the broadcast MTU adaptable to the carrying media, i.e.,
we use the smallest MTU supported by any of the interfaces attached
to TIPC.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: simplify bearer level broadcast
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:42 +0000 (08:51 -0400)]
tipc: simplify bearer level broadcast

Until now, we have been keeping track of the exact set of broadcast
destinations though the help structure tipc_node_map. This leads us to
have to maintain a whole infrastructure for supporting this, including
a pseudo-bearer and a number of functions to manipulate both the bearers
and the node map correctly. Apart from the complexity, this approach is
also limiting, as struct tipc_node_map only can support cluster local
broadcast if we want to avoid it becoming excessively large. We want to
eliminate this limitation, in order to enable introduction of scoped
multicast in the future.

A closer analysis reveals that it is unnecessary maintaining this "full
set" overview; it is sufficient to keep a counter per bearer, indicating
how many nodes can be reached via this bearer at the moment. The protocol
is now robust enough to handle transitional discrepancies between the
nominal number of reachable destinations, as expected by the broadcast
protocol itself, and the number which is actually reachable at the
moment. The initial broadcast synchronization, in conjunction with the
retransmission mechanism, ensures that all packets will eventually be
acknowledged by the correct set of destinations.

This commit introduces these changes.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: let broadcast packet reception use new link receive function
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:41 +0000 (08:51 -0400)]
tipc: let broadcast packet reception use new link receive function

The code path for receiving broadcast packets is currently distinct
from the unicast path. This leads to unnecessary code and data
duplication, something that can be avoided with some effort.

We now introduce separate per-peer tipc_link instances for handling
broadcast packet reception. Each receive link keeps a pointer to the
common, single, broadcast link instance, and can hence handle release
and retransmission of send buffers as if they belonged to the own
instance.

Furthermore, we let each unicast link instance keep a reference to both
the pertaining broadcast receive link, and to the common send link.
This makes it possible for the unicast links to easily access data for
broadcast link synchronization, as well as for carrying acknowledges for
received broadcast packets.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: introduce capability bit for broadcast synchronization
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:40 +0000 (08:51 -0400)]
tipc: introduce capability bit for broadcast synchronization

Until now, we have tried to support both the newer, dedicated broadcast
synchronization mechanism along with the older, less safe, RESET_MSG/
ACTIVATE_MSG based one. The latter method has turned out to be a hazard
in a highly dynamic cluster, so we find it safer to disable it completely
when we find that the former mechanism is supported by the peer node.

For this purpose, we now introduce a new capabability bit,
TIPC_BCAST_SYNCH, to inform any peer nodes that dedicated broadcast
syncronization is supported by the present node. The new bit is conveyed
between peers in the 'capabilities' field of neighbor discovery messages.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: let broadcast transmission use new link transmit function
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:39 +0000 (08:51 -0400)]
tipc: let broadcast transmission use new link transmit function

This commit simplifies the broadcast link transmission function, by
leveraging previous changes to the link transmission function and the
broadcast transmission link life cycle.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: make struct tipc_link generic to support broadcast
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:38 +0000 (08:51 -0400)]
tipc: make struct tipc_link generic to support broadcast

Realizing that unicast is just a special case of broadcast, we also see
that we can go in the other direction, i.e., that modest changes to the
current unicast link can make it generic enough to support broadcast.

The following changes are introduced here:

- A new counter ("ackers") in struct tipc_link, to indicate how many
  peers need to ack a packet before it can be released.
- A corresponding counter in the skb user area, to keep track of how
  many peers a are left to ack before a buffer can be released.
- A new counter ("acked"), to keep persistent track of how far a peer
  has acked at the moment, i.e., where in the transmission queue to
  start updating buffers when the next ack arrives. This is to avoid
  double acknowledgements from a peer, with inadvertent relase of
  packets as a result.
- A more generic tipc_link_retrans() function, where retransmit starts
  from a given sequence number, instead of the first packet in the
  transmision queue. This is to minimize the number of retransmitted
  packets on the broadcast media.

When the new functionality is taken into use in the next commits,
we expect it to have minimal effect on unicast mode performance.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: use explicit allocation of broadcast send link
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:37 +0000 (08:51 -0400)]
tipc: use explicit allocation of broadcast send link

The broadcast link instance (struct tipc_link) used for sending is
currently aggregated into struct tipc_bclink. This means that we cannot
use the regular tipc_link_create() function for initiating the link, but
do instead have to initiate numerous fields directly from the
bcast_init() function.

We want to reduce dependencies between the broadcast functionality
and the inner workings of tipc_link. In this commit, we introduce
a new function tipc_bclink_create() to link.c, and allocate the
instance of the link separately using this function.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: make link implementation independent from struct tipc_bearer
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:36 +0000 (08:51 -0400)]
tipc: make link implementation independent from struct tipc_bearer

In reality, the link implementation is already independent from
struct tipc_bearer, in that it doesn't store any reference to it.
However, we still pass on a pointer to a bearer instance in the
function tipc_link_create(), just to have it extract some
initialization information from it.

I later commits, we need to create instances of tipc_link without
having any associated struct tipc_bearer. To facilitate this, we
want to extract the initialization data already in the creator
function in node.c, before calling tipc_link_create(), and pass
this info on as individual parameters in the call.

This commit introduces this change.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: create broadcast transmission link at namespace init
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:35 +0000 (08:51 -0400)]
tipc: create broadcast transmission link at namespace init

The broadcast transmission link is currently instantiated when the
network subsystem is started, i.e., on order from user space via netlink.

This forces the broadcast transmission code to do unnecessary tests for
the existence of the transmission link, as well in single mode node as
in network mode.

In this commit, we do instead create the link during initialization of
the name space, and remove it when it is stopped. The fact that the
transmission link now has a guaranteed longer life cycle than any of its
potential clients paves the way for further code simplifcations
and optimizations.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: move broadcast link lock to struct tipc_net
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:34 +0000 (08:51 -0400)]
tipc: move broadcast link lock to struct tipc_net

The broadcast lock will need to be acquired outside bcast.c in a later
commit. For this reason, we move the lock to struct tipc_net. Consistent
with the changes in the previous commit, we also introducee two new
functions tipc_bcast_lock() and tipc_bcast_unlock(). The code that is
currently using tipc_bclink_lock()/unlock() will be phased out during
the coming commits in this series.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotipc: move bcast definitions to bcast.c
Jon Paul Maloy [Thu, 22 Oct 2015 12:51:33 +0000 (08:51 -0400)]
tipc: move bcast definitions to bcast.c

Currently, a number of structure and function definitions related
to the broadcast functionality are unnecessarily exposed in the file
bcast.h. This obscures the fact that the external interface towards
the broadcast link in fact is very narrow, and causes unnecessary
recompilations of other files when anything changes in those
definitions.

In this commit, we move as many of those definitions as is currently
possible to the file bcast.c.

We also rename the structure 'tipc_bclink' to 'tipc_bc_base', both
since the name does not correctly describe the contents of this
struct, and will do so even less in the future, and because we want
to use the term 'link' more appropriately in the functionality
introduced later in this series.

Finally, we rename a couple of functions, such as tipc_bclink_xmit()
and others that will be kept in the future, to include the term 'bcast'
instead.

There are no functional changes in this commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Sat, 24 Oct 2015 13:54:12 +0000 (06:54 -0700)]
Merge git://git./linux/kernel/git/davem/net

Conflicts:
net/ipv6/xfrm6_output.c
net/openvswitch/flow_netlink.c
net/openvswitch/vport-gre.c
net/openvswitch/vport-vxlan.c
net/openvswitch/vport.c
net/openvswitch/vport.h

The openvswitch conflicts were overlapping changes.  One was
the egress tunnel info fix in 'net' and the other was the
vport ->send() op simplification in 'net-next'.

The xfrm6_output.c conflicts was also a simplification
overlapping a bug fix.

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
David S. Miller [Sat, 24 Oct 2015 12:13:16 +0000 (05:13 -0700)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg says:

====================
pull request: bluetooth-next 2015-10-22

Here's probably the last bluetooth-next pull request for 4.4. Among
several other changes it contains the rest of the fixes & cleanups from
the Bluetooth UnplugFest (that didn't need to be hurried to 4.3).

 - Refactoring & cleanups to 6lowpan code
 - New USB ids for two Atheros controllers and BCM43142A0 from Broadcom
 - Fix (quirk) for broken Broadcom BCM2045 controllers
 - Support for latest Apple controllers
 - Improvements to the vendor diagnostic message support

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agortl8xxxu: move devices supported by rtlwifi under UNTESTED config
Kalle Valo [Fri, 23 Oct 2015 17:27:58 +0000 (20:27 +0300)]
rtl8xxxu: move devices supported by rtlwifi under UNTESTED config

There are still four devices which are currently supported both by the new
rtl8xxxu driver and rtlwifi. To not break existing setups enable the support
for these four devices only when CONFIG_RTL8XXXU_UNTESTED is turned on.

Once rtl8xxxu support is found to be good enough the devices can be removed
from rtlwifi and enabled by default in rtl8xxxu.

Reported-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
9 years agobnxt_en: Fix compile errors when CONFIG_BNXT_SRIOV is not set.
Michael Chan [Fri, 23 Oct 2015 19:06:19 +0000 (15:06 -0400)]
bnxt_en: Fix compile errors when CONFIG_BNXT_SRIOV is not set.

struct bnxt_pf_info needs to be always defined.  Move bnxt_update_vf_mac()
to bnxt_sriov.c and add some missing #ifdef CONFIG_BNXT_SRIOV.

Reported-by: Jim Hull <jim.hull@hpe.com>
Tested-by: Jim Hull <jim.hull@hpe.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next...
David S. Miller [Fri, 23 Oct 2015 13:58:09 +0000 (06:58 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-10-23

This series contains updates to i40e, i40evf, if_link, ixgbe and ixgbevf.

Anjali adds a workaround to drop any flow control frames from being
transmitted from any VSI, so that a malicious VF cannot send flow control
or PFC packets out on the wire.  Also fixed a bug in debugfs by grabbing
the filter list lock before adding or deleting a filter.

Akeem fixes an issue where we were unconditionally returning VEB bridge
mode before allowing LB in the add VSI routine, resolve by checking if
the bridge is actually in VEB mode first.

Mitch fixed an issue where the incorrect structure was being used for
VLAN filter list, which meant the VLAN filter list did not get
processed correctly and VLAN filters would not be re-enabled after any
kind of reset.

Helin fixed a problem of possibly getting inconsistent flow control
status after a PF reset.  The issue was requested_mode was being set
with a default value during probe, but the hardware state could be a
different value from this mode.

Carolyn fixed a problem where the driver output of the OEM version
string varied from the other tools.

Jean Sacren fixes up kernel documentation by fixing function header
comments to match actual variables used in the functions.  Also
cleaned up variable initialization, when the variable would be
over-written immediately.

Hiroshi Shimanoto provides three patches to add "trusted" VF by adding
netlink directives and an NDO entry.  Then implement these new controls
in ixgbe and ixgbevf.  This series has gone through several iterations
to address all the suggested community changes and concerns.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mpls_multipath'
David S. Miller [Fri, 23 Oct 2015 13:26:50 +0000 (06:26 -0700)]
Merge branch 'mpls_multipath'

Roopa Prabhu says:

====================
mpls: multipath support

This patch adds support for MPLS multipath routes.

Includes following changes to support multipath:
- splits struct mpls_route into 'struct mpls_route + struct mpls_nh'.

- struct mpls_nh represents a mpls nexthop label forwarding entry

- Adds support to parse/fill RTA_MULTIPATH netlink attribute for
multipath routes similar to ipv4/v6 fib

- In the process of restructuring, this patch also consistently changes all
labels to u8

$ip -f mpls route add 100 nexthop as 200 via inet 10.1.1.2 dev swp1 \
nexthop as 700 via inet 10.1.1.6 dev swp2 \
nexthop as 800 via inet 40.1.1.2 dev swp3

$ip  -f mpls route show
100
nexthop as to 200 via inet 10.1.1.2  dev swp1
nexthop as to 700 via inet 10.1.1.6  dev swp2
nexthop as to 800 via inet 40.1.1.2  dev swp3
====================

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agompls: flow-based multipath selection
Robert Shearman [Fri, 23 Oct 2015 13:03:28 +0000 (06:03 -0700)]
mpls: flow-based multipath selection

Change the selection of a multipath route to use a flow-based
hash. This more suitable for traffic sensitive to reordering within a
flow (e.g. TCP, L2VPN) and whilst still allowing a good distribution
of traffic given enough flows.

Selection of the path for a multipath route is done using a hash of:
1. Label stack up to MAX_MP_SELECT_LABELS labels or up to and
   including entropy label, whichever is first.
2. 3-tuple of (L3 src, L3 dst, proto) from IPv4/IPv6 header in MPLS
   payload, if present.

Naturally, a 5-tuple hash using L4 information in addition would be
possible and be better in some scenarios, but there is a tradeoff
between looking deeper into the packet to achieve good distribution,
and packet forwarding performance, and I have erred on the side of the
latter as the default.

Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agompls: multipath route support
Roopa Prabhu [Fri, 23 Oct 2015 13:03:27 +0000 (06:03 -0700)]
mpls: multipath route support

This patch adds support for MPLS multipath routes.

Includes following changes to support multipath:
- splits struct mpls_route into 'struct mpls_route + struct mpls_nh'

- 'struct mpls_nh' represents a mpls nexthop label forwarding entry

- moves mpls route and nexthop structures into internal.h

- A mpls_route can point to multiple mpls_nh structs

- the nexthops are maintained as a array (similar to ipv4 fib)

- In the process of restructuring, this patch also consistently changes
  all labels to u8

- Adds support to parse/fill RTA_MULTIPATH netlink attribute for
multipath routes similar to ipv4/v6 fib

- In this patch, the multipath route nexthop selection algorithm
simply returns the first nexthop. It is replaced by a
hash based algorithm from Robert Shearman in the next patch

- mpls_route_update cleanup: remove 'dev' handling in mpls_route_update.
mpls_route_update though implemented to update based on dev, it was
never used that way. And the dev handling gets tricky with multiple
nexthops. Cannot match against any single nexthops dev. So, this patch
removes the unused 'dev' handling in mpls_route_update.

- dead route/path handling will be implemented in a subsequent patch

Example:

$ip -f mpls route add 100 nexthop as 200 via inet 10.1.1.2 dev swp1 \
                nexthop as 700 via inet 10.1.1.6 dev swp2 \
                nexthop as 800 via inet 40.1.1.2 dev swp3

$ip  -f mpls route show
100
        nexthop as to 200 via inet 10.1.1.2  dev swp1
        nexthop as to 700 via inet 10.1.1.6  dev swp2
        nexthop as to 800 via inet 40.1.1.2  dev swp3

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: sysctl: fix a kmemleak warning
Li RongQing [Fri, 23 Oct 2015 12:59:49 +0000 (20:59 +0800)]
net: sysctl: fix a kmemleak warning

the returned buffer of register_sysctl() is stored into net_header
variable, but net_header is not used after, and compiler maybe
optimise the variable out, and lead kmemleak reported the below warning

comm "swapper/0", pid 1, jiffies 4294937448 (age 267.270s)
hex dump (first 32 bytes):
90 38 8b 01 c0 ff ff ff 00 00 00 00 01 00 00 00 .8..............
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffc00020f134>] create_object+0x10c/0x2a0
[<ffffffc00070ff44>] kmemleak_alloc+0x54/0xa0
[<ffffffc0001fe378>] __kmalloc+0x1f8/0x4f8
[<ffffffc00028e984>] __register_sysctl_table+0x64/0x5a0
[<ffffffc00028eef0>] register_sysctl+0x30/0x40
[<ffffffc00099c304>] net_sysctl_init+0x20/0x58
[<ffffffc000994dd8>] sock_init+0x10/0xb0
[<ffffffc0000842e0>] do_one_initcall+0x90/0x1b8
[<ffffffc000966bac>] kernel_init_freeable+0x218/0x2f0
[<ffffffc00070ed6c>] kernel_init+0x1c/0xe8
[<ffffffc000083bfc>] ret_from_fork+0xc/0x50
[<ffffffffffffffff>] 0xffffffffffffffff <<end check kmemleak>>

Before fix, the objdump result on ARM64:
0000000000000000 <net_sysctl_init>:
   0:   a9be7bfd        stp     x29, x30, [sp,#-32]!
   4:   90000001        adrp    x1, 0 <net_sysctl_init>
   8:   90000000        adrp    x0, 0 <net_sysctl_init>
   c:   910003fd        mov     x29, sp
  10:   91000021        add     x1, x1, #0x0
  14:   91000000        add     x0, x0, #0x0
  18:   a90153f3        stp     x19, x20, [sp,#16]
  1c:   12800174        mov     w20, #0xfffffff4                // #-12
  20:   94000000        bl      0 <register_sysctl>
  24:   b4000120        cbz     x0, 48 <net_sysctl_init+0x48>
  28:   90000013        adrp    x19, 0 <net_sysctl_init>
  2c:   91000273        add     x19, x19, #0x0
  30:   9101a260        add     x0, x19, #0x68
  34:   94000000        bl      0 <register_pernet_subsys>
  38:   2a0003f4        mov     w20, w0
  3c:   35000060        cbnz    w0, 48 <net_sysctl_init+0x48>
  40:   aa1303e0        mov     x0, x19
  44:   94000000        bl      0 <register_sysctl_root>
  48:   2a1403e0        mov     w0, w20
  4c:   a94153f3        ldp     x19, x20, [sp,#16]
  50:   a8c27bfd        ldp     x29, x30, [sp],#32
  54:   d65f03c0        ret
After:
0000000000000000 <net_sysctl_init>:
   0:   a9bd7bfd        stp     x29, x30, [sp,#-48]!
   4:   90000000        adrp    x0, 0 <net_sysctl_init>
   8:   910003fd        mov     x29, sp
   c:   a90153f3        stp     x19, x20, [sp,#16]
  10:   90000013        adrp    x19, 0 <net_sysctl_init>
  14:   91000000        add     x0, x0, #0x0
  18:   91000273        add     x19, x19, #0x0
  1c:   f90013f5        str     x21, [sp,#32]
  20:   aa1303e1        mov     x1, x19
  24:   12800175        mov     w21, #0xfffffff4                // #-12
  28:   94000000        bl      0 <register_sysctl>
  2c:   f9002260        str     x0, [x19,#64]
  30:   b40001a0        cbz     x0, 64 <net_sysctl_init+0x64>
  34:   90000014        adrp    x20, 0 <net_sysctl_init>
  38:   91000294        add     x20, x20, #0x0
  3c:   9101a280        add     x0, x20, #0x68
  40:   94000000        bl      0 <register_pernet_subsys>
  44:   2a0003f5        mov     w21, w0
  48:   35000080        cbnz    w0, 58 <net_sysctl_init+0x58>
  4c:   aa1403e0        mov     x0, x20
  50:   94000000        bl      0 <register_sysctl_root>
  54:   14000004        b       64 <net_sysctl_init+0x64>
  58:   f9402260        ldr     x0, [x19,#64]
  5c:   94000000        bl      0 <unregister_sysctl_table>
  60:   f900227f        str     xzr, [x19,#64]
  64:   2a1503e0        mov     w0, w21
  68:   f94013f5        ldr     x21, [sp,#32]
  6c:   a94153f3        ldp     x19, x20, [sp,#16]
  70:   a8c37bfd        ldp     x29, x30, [sp],#48
  74:   d65f03c0        ret

Add the possible error handle to free the net_header to remove the
kmemleak warning

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>