The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NDavid Dillow <dave@thedillows.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

John W. Linville says:

====================
This is a batch of updates intended for the 3.13 stream...

The biggest item of interest in here is wcn36xx, the new mac80211
driver for Qualcomm WCN3660/WCN3680 hardware.

Regarding the mac80211 bits, Johannes says:

"We have an assortment of cleanups and new features, of which the
biggest one is probably the channel-switch support in IBSS. Nothing
else really stands out much."

On top of that, the ath9k and rt2x00 get a lot of update action from
Felix Fietkau and Gabor Juhos, respectively.  There are a handful of
updates to other drivers here and there as well.

Please let me know if there are problems!
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Half of the rt_cache_stat fields are no longer used after IP
route cache removal, lets shrink this per cpu area.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix (a few hundred) build errors due to missing semi-colon when
KMEMCHECK is enabled:

  include/net/inet_timewait_sock.h:139:2: error: expected ',', ';' or '}' before 'int'
  include/net/inet_timewait_sock.h:148:28: error: 'const struct inet_timewait_sock' has no member named 'tw_death_node'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

xen-netback: IPv6 offload support

====================
This patch series adds support for checksum and large packet offloads
into xen-netback.  Testing has mainly been done using the Microsoft
network hardware certification suite running in Server 2008R2 VMs with
Citrix PV frontends.

v2:
- Fixed Wei's email address in Cc lines

v3:
- Responded to Wei's comments:
 - netif.h now updated with comments and a definition of
   XEN_NETIF_GSO_TYPE_NONE.
 - limited number of pullups
- Responded to Annie's comments:
 - New GSO_BIT macro

v4:
- Responded to more of Wei's comments
- Remove parsing of IPv6 fragment header and added warning

v5:
- Added comment concerning the value chosen for PKT_PROT_LEN
- Dropped deprecation of feature-no-csum-offload
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds code to handle SKB_GSO_TCPV6 skbs and construct appropriate
extra or prefix segments to pass the large packet to the frontend. New
xenstore flags, feature-gso-tcpv6 and feature-gso-tcpv6-prefix, are sampled
to determine if the frontend is capable of handling such packets.
Signed-off-by: NPaul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a xenstore feature flag, festure-gso-tcpv6, to advertise
that netback can handle IPv6 TCP GSO packets. It creates SKB_GSO_TCPV6 skbs
if the frontend passes an extra segment with the new type
XEN_NETIF_GSO_TYPE_TCPV6 added to netif.h.
Signed-off-by: NPaul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Acked-by: NIan Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There is no mechanism to insist that a guest always generates a packet
with good checksum (at least for IPv4) so we must handle checksum
offloading from the guest and hence should set NETIF_F_RXCSUM.
Signed-off-by: NPaul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For performance of VM to VM traffic on a single host it is better to avoid
calculation of TCP/UDP checksum in the sending frontend. To allow this this
patch adds the code necessary to set up partial checksum for IPv6 packets
and xenstore flag feature-ipv6-csum-offload to advertise that fact to
frontends.
Signed-off-by: NPaul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Check xenstore flag feature-ipv6-csum-offload to determine if a
guest is happy to accept IPv6 packets with only partial checksum.
Signed-off-by: NPaul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

bonding: patchset for rcu use in bonding

====================
The Patch Set convert the xmit of 3ad and alb mode to use rcu lock.
dd rtnl lock and remove read lock for bond sysfs.

v2 because the bond_for_each_slave_rcu without rcu_read_lock() will occurs one warming, so
add new function for alb xmit path to avoid warming.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The bond_for_each_slave() will not be protected by read_lock(),
only protected by rtnl_lock(), so need to replace read_lock()
with rtnl_lock().
Signed-off-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The commit 278b2083
(bonding: initial RCU conversion) has convert the roundrobin,
active-backup, broadcast and xor xmit path to rcu protection,
the performance will be better for these mode, so this time,
convert xmit path for alb mode.
Signed-off-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Cc: Nikolay Aleksandrov <nikolay@redhat.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The commit 278b2083
(bonding: initial RCU conversion) has convert the roundrobin,
active-backup, broadcast and xor xmit path to rcu protection,
the performance will be better for these mode, so this time,
convert xmit path for 3ad mode.
Suggested-by: NNikolay Aleksandrov <nikolay@redhat.com>
Suggested-by: NVeaceslav Falico <vfalico@redhat.com>
Signed-off-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NWang Yufen <wangyufen@huawei.com>
Cc: Nikolay Aleksandrov <nikolay@redhat.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
netfilter updates: nf_tables pull request

The following patchset contains the current original nf_tables tree
condensed in 17 patches. I have organized them by chronogical order
since the original nf_tables code was released in 2009 and by
dependencies between the different patches.

The patches are:

1) Adapt all existing hooks in the tree to pass hook ops to the
   hook callback function, required by nf_tables, from Patrick McHardy.

2) Move alloc_null_binding to nf_nat_core, as it is now also needed by
   nf_tables and ip_tables, original patch from Patrick McHardy but
   required major changes to adapt it to the current tree that I made.

3) Add nf_tables core, including the netlink API, the packet filtering
   engine, expressions and built-in tables, from Patrick McHardy. This
   patch includes accumulated fixes since 2009 and minor enhancements.
   The patch description contains a list of references to the original
   patches for the record. For those that are not familiar to the
   original work, see [1], [2] and [3].

4) Add netlink set API, this replaces the original set infrastructure
   to introduce a netlink API to add/delete sets and to add/delete
   set elements. This includes two set types: the hash and the rb-tree
   sets (used for interval based matching). The main difference with
   ipset is that this infrastructure is data type agnostic. Patch from
   Patrick McHardy.

5) Allow expression operation overload, this API change allows us to
   provide define expression subtypes depending on the configuration
   that is received from user-space via Netlink. It is used by follow
   up patches to provide optimized versions of the payload and cmp
   expressions and the x_tables compatibility layer, from Patrick
   McHardy.

6) Add optimized data comparison operation, it requires the previous
   patch, from Patrick McHardy.

7) Add optimized payload implementation, it requires patch 5, from
   Patrick McHardy.

8) Convert built-in tables to chain types. Each chain type have special
   semantics (filter, route and nat) that are used by userspace to
   configure the chain behaviour. The main chain regarding iptables
   is that tables become containers of chain, with no specific semantics.
   However, you may still configure your tables and chains to retain
   iptables like semantics, patch from me.

9) Add compatibility layer for x_tables. This patch adds support to
   use all existing x_tables extensions from nf_tables, this is used
   to provide a userspace utility that accepts iptables syntax but
   used internally the nf_tables kernel core. This patch includes
   missing features in the nf_tables core such as the per-chain
   stats, default chain policy and number of chain references, which
   are required by the iptables compatibility userspace tool. Patch
   from me.

10) Fix transport protocol matching, this fix is a side effect of the
    x_tables compatibility layer, which now provides a pointer to the
    transport header, from me.

11) Add support for dormant tables, this feature allows you to disable
    all chains and rules that are contained in one table, from me.

12) Add IPv6 NAT support. At the time nf_tables was made, there was no
    NAT IPv6 support yet, from Tomasz Bursztyka.

13) Complete net namespace support. This patch register the protocol
    family per net namespace, so tables (thus, other objects contained
    in tables such as sets, chains and rules) are only visible from the
    corresponding net namespace, from me.

14) Add the insert operation to the nf_tables netlink API, this requires
    adding a new position attribute that allow us to locate where in the
    ruleset a rule needs to be inserted, from Eric Leblond.

15) Add rule batching support, including atomic rule-set updates by
    using rule-set generations. This patch includes a change to nfnetlink
    to include two new control messages to indicate the beginning and
    the end of a batch. The end message is interpreted as the commit
    message, if it's missing, then the rule-set updates contained in the
    batch are aborted, from me.

16) Add trace support to the nf_tables packet filtering core, from me.

17) Add ARP filtering support, original patch from Patrick McHardy, but
    adapted to fit into the chain type infrastructure. This was recovered
    to be used by nft userspace tool and our compatibility arptables
    userspace tool.

There is still work to do to fully replace x_tables [4] [5] but that can
be done incrementally by extending our netlink API. Moreover, looking at
netfilter-devel and the amount of contributions to nf_tables we've been
getting, I think it would be good to have it mainstream to avoid accumulating
large patchsets skip continuous rebases.

I tried to provide a reasonable patchset, we have more than 100 accumulated
patches in the original nf_tables tree, so I collapsed many of the small
fixes to the main patch we had since 2009 and provide a small batch for
review to netdev, while trying to retain part of the history.

For those who didn't give a try to nf_tables yet, there's a quick howto
available from Eric Leblond that describes how to get things working [6].

Comments/reviews welcome.

Thanks!

[1] http://lwn.net/Articles/324251/
[2] http://workshop.netfilter.org/2013/wiki/images/e/ee/Nftables-osd-2013-developer.pdf
[3] http://lwn.net/Articles/564095/
[4] http://people.netfilter.org/pablo/map-pending-work.txt
[4] http://people.netfilter.org/pablo/nftables-todo.txt
[5] https://home.regit.org/netfilter-en/nftables-quick-howto/
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes a comment mentioning IRQF_DISABLED,
which is deprecated.
Signed-off-by: NMichael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch proposes to remove the use of the IRQF_DISABLED flag

It's a NOOP since 2.6.35 and it will be removed one day.
Signed-off-by: NMichael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Amir Vadai says:

====================
net/mlx4: Mellanox driver update 15-10-2013

This patchset contains small code cleaning patches, and a patch to make
mlx4_core use module_request() in order to load the relevant link layer module
(mlx4_en or mlx4_ib) according to the port type.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Mellanox ConnectX architecture is:  mlx4_core is the lower level
PCI driver which register on the PCI id, and protocol specific drivers
are depended on it: mlx4_en - for Ethernet and mlx4_ib for Infiniband.
NIC could have multiple ports which can change their type dynamically.
We use the request_module() call to load the relevant protocol driver
when needed: on loading time or at port type change event.
Signed-off-by: NEyal Perry <eyalpe@mellanox.com>
Signed-off-by: NAmir Vadai <amirv@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Clean up warning added by commit fe6f700d "net/mlx4_core: Respond to
operation request by firmware".
Signed-off-by: NAmir Vadai <amirv@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Small code cleanup:

1. change MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN to MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN

2. put MLX4_SET_PORT_PRIO2TC and MLX4_SET_PORT_SCHEDULER in the same union with the
   other MLX4_SET_PORT_yyy
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NAmir Vadai <amirv@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove code that triggers trivial build warnings.

drivers/net/ethernet/mellanox/mlx4/cmd.c: In function ‘mlx4_set_vf_vlan’:
drivers/net/ethernet/mellanox/mlx4/cmd.c:2256: warning: variable ‘vf_oper’ set but not used
drivers/net/ethernet/mellanox/mlx4/mcg.c: In function ‘mlx4_map_sw_to_hw_steering_mode’:
drivers/net/ethernet/mellanox/mlx4/mcg.c:648: warning: comparison of unsigned expression < 0 is always false
drivers/net/ethernet/mellanox/mlx4/mcg.c: In function ‘mlx4_map_sw_to_hw_steering_id’:
drivers/net/ethernet/mellanox/mlx4/mcg.c:685: warning: comparison of unsigned expression < 0 is always false
drivers/net/ethernet/mellanox/mlx4/mcg.c: In function ‘mlx4_hw_rule_sz’:
drivers/net/ethernet/mellanox/mlx4/mcg.c:712: warning: comparison of unsigned expression < 0 is always false
drivers/net/ethernet/mellanox/mlx4/fw.c: In function ‘mlx4_opreq_action’:
drivers/net/ethernet/mellanox/mlx4/fw.c:1732: warning: variable ‘type_m’ set but not used
drivers/net/ethernet/mellanox/mlx4/srq.c:302: warning: no previous prototype for ‘mlx4_srq_lookup’
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NAmir Vadai <amirv@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

TCP listener refactoring, part 6 :

Use sock_gen_put() from inet_diag_dump_one_icsk() for future
SYN_RECV support.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Included changes:
- ensure RecordRoute information is added to BAT_ICMP echo_request/reply only
- use VLAN_ETH_HLEN when possible
- use htons when possible
- substitute old fragmentation code with a new improved implementation by
  Martin Hundebøll
- create common header for BAT_ICMP packets to improve extendibility
- consider the network coding overhead when computing the overall room needed by
  batman headers
- add dummy soft-interface rx mode handler
- minor code refactoring and cleanups
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

lready have rf_vals_3x with same values.  Hence rf_vals_3053 is removed
in this patch.
Signed-off-by: NKevin Lo <kevlo@kevlo.org>
Acked-by: NPaul Menzel <paulepanter@users.sourceforge.net>
Acked-by: NStanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Update rf registers to use the same values that the MediaTek/Ralink
reference driver DPO_RT5572_LinuxSTA_2.6.1.3_20121022 uses.

References:
  RF5390RegTable in chips/rt5390.c
  RF5392RegTable in chips/rt5390.c

Tested on TP-Link TL-WN727N and D-Link DWA-140 Rev.b3 usb wifi dongles.
Signed-off-by: NKevin Lo <kevlo@kevlo.org>
Acked-by: NStanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It replaces deprecated create_workqueue().
Signed-off-by: NAmitkumar Karwar <akarwar@marvell.com>
Signed-off-by: NBing Zhao <bzhao@marvell.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Accessing it to get the current operating channel is racy and in the way
of further channel handling related changes
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It is not exposed as a configuration option anyway
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Preparation for adding the scanning state machine to ath9k
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Rework its wrapper function to make it more generic, using it as a
replacement for previous calls to ath9k_cmn_update_ichannel.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There was some duplication between channelFlags and chanmode, as well as
a lot of redundant checks based on the combinations of flags.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The hardware is always configured with OFDM support enabled
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Hardware 802.11b-only mode isn't supported by the driver (the device is
configured for 802.11n/g instead). Simplify the code by removing checks
for it.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use wrappers where available. Simplifies code and helps with further
improvements to the channel data structure
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There's no shared code for handling both rx and tx buffers, and tx
buffers require a lot more metadata than rx buffers.
Using a separate data structure for rx reduces memory usage and improves
cache footprint.
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/wcn36xx/debug.c:27:11-31: WARNING opportunity for simple_open, see also structure on line 106
/c/kernel-tests/src/i386/drivers/net/wireless/ath/wcn36xx/debug.c:27:11-31: WARNING opportunity for simple_open, see also structure on line 148

 This removes an open coded simple_open() function
 and replaces file operations references to the function
 with simple_open() instead.

Generated by: coccinelle/api/simple_open.cocci

CC: Eugene Krasnikov <k.eugene.e@gmail.com>
CC: John W. Linville <linville@tuxdriver.com>
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use the appropriate helper functions instead of
directly accessing the rt2x00dev->cap_flags field
to check device capability flags.

This improves readability of the code a bit.

Compile tested only.
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>