profile/common/platform/kernel/linux-artik7.git
9 years agoipv6: introduce ipv6_make_skb
Vlad Yasevich [Sat, 31 Jan 2015 15:40:15 +0000 (10:40 -0500)]
ipv6: introduce ipv6_make_skb

This commit is very similar to
commit 1c32c5ad6fac8cee1a77449f5abf211e911ff830
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Tue Mar 1 02:36:47 2011 +0000

    inet: Add ip_make_skb and ip_finish_skb

It adds IPv6 version of the helpers ip6_make_skb and ip6_finish_skb.

The job of ip6_make_skb is to collect messages into an ipv6 packet
and poplulate ipv6 eader.  The job of ip6_finish_skb is to transmit
the generated skb.  Together they replicated the job of
ip6_push_pending_frames() while also provide the capability to be
called independently.  This will be needed to add lockless UDP sendmsg
support.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: Append sending data to arbitrary queue
Vlad Yasevich [Sat, 31 Jan 2015 15:40:14 +0000 (10:40 -0500)]
ipv6: Append sending data to arbitrary queue

Add the ability to append data to arbitrary queue.  This
will be needed later to implement lockless UDP sends.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: pull cork initialization into its own function.
Vlad Yasevich [Sat, 31 Jan 2015 15:40:13 +0000 (10:40 -0500)]
ipv6: pull cork initialization into its own function.

Pull IPv6 cork initialization into its own function that
can be re-used.  IPv6 specific cork data did not have an
explicit data structure.  This patch creats eone so that
just ipv6 cork data can be as arguemts.  Also, since
IPv6 tries to save the flow label into inet_cork_full
tructure, pass the full cork.

Adjust ip6_cork_release() to take cork data structures.

Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4 : Improve IEEE DCBx support, other minor open-lldp fixes
Anish Bhatt [Sat, 31 Jan 2015 01:20:17 +0000 (17:20 -0800)]
cxgb4 : Improve IEEE DCBx support, other minor open-lldp fixes

* Add support for IEEE ets & pfc api.
* Fix bug that resulted in incorrect bandwidth percentage being returned for
  CEE peers
* Convert pfc enabled info from firmware format to what dcbnl expects before
  returning

Signed-off-by: Anish Bhatt <anish@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/tulip: don't warn about unknown ARM architecture
Arnd Bergmann [Fri, 30 Jan 2015 21:58:19 +0000 (22:58 +0100)]
net/tulip: don't warn about unknown ARM architecture

ARM has 32-byte cache lines, which according to the comment in
the init registers function seems to work best with the default
value of 0x4800 that is also used on sparc and parisc.

This adds ARM to the same list, to use that default but no
longer warn about it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: hip04: add missing MODULE_LICENSE
Arnd Bergmann [Fri, 30 Jan 2015 21:57:01 +0000 (22:57 +0100)]
net: hip04: add missing MODULE_LICENSE

The hip04 ethernet driver causes a new compile-time warning
when built as a loadable module:

WARNING: modpost: missing MODULE_LICENSE() in drivers/net/ethernet/hisilicon/hip04_eth.o
see include/linux/module.h for more information

This adds the license as "GPL", which matches the header of the file.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: dctcp: loosen requirement to assert ECT(0) during 3WHS
Florian Westphal [Fri, 30 Jan 2015 19:45:20 +0000 (20:45 +0100)]
net: dctcp: loosen requirement to assert ECT(0) during 3WHS

One deployment requirement of DCTCP is to be able to run
in a DC setting along with TCP traffic. As Glenn Judd's
NSDI'15 paper "Attaining the Promise and Avoiding the Pitfalls
of TCP in the Datacenter" [1] (tba) explains, one way to
solve this on switch side is to split DCTCP and TCP traffic
in two queues per switch port based on the DSCP: one queue
soley intended for DCTCP traffic and one for non-DCTCP traffic.

For the DCTCP queue, there's the marking threshold K as
explained in commit e3118e8359bb ("net: tcp: add DCTCP congestion
control algorithm") for RED marking ECT(0) packets with CE.
For the non-DCTCP queue, there's f.e. a classic tail drop queue.
As already explained in e3118e8359bb, running DCTCP at scale
when not marking SYN/SYN-ACK packets with ECT(0) has severe
consequences as for non-ECT(0) packets, traversing the RED
marking DCTCP queue will result in a severe reduction of
connection probability.

This is due to the DCTCP queue being dominated by ECT(0) traffic
and switches handle non-ECT traffic in the RED marking queue
after passing K as drops, where K is usually a low watermark
in order to leave enough tailroom for bursts. Splitting DCTCP
traffic among several queues (ECN and non-ECN queue) is being
considered a terrible idea in the network community as it
splits single flows across multiple network paths.

Therefore, commit e3118e8359bb implements this on Linux as
ECT(0) marked traffic, as we argue that marking all packets
of a DCTCP flow is the only viable solution and also doesn't
speak against the draft.

However, recently, a DCTCP implementation for FreeBSD hit also
their mainline kernel [2]. In order to let them play well
together with Linux' DCTCP, we would need to loosen the
requirement that ECT(0) has to be asserted during the 3WHS as
not implemented in FreeBSD. This simplifies the ECN test and
lets DCTCP work together with FreeBSD.

Joint work with Daniel Borkmann.

  [1] https://www.usenix.org/conference/nsdi15/technical-sessions/presentation/judd
  [2] https://github.com/freebsd/freebsd/commit/8ad879445281027858a7fa706d13e458095b595f

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Glenn Judd <glenn.judd@morganstanley.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'net-timestamp'
David S. Miller [Tue, 3 Feb 2015 02:46:57 +0000 (18:46 -0800)]
Merge branch 'net-timestamp'

Willem de Bruijn says:

====================
net-timestamp: blinding

Changes
  (v2 -> v3)
  - rebase only: v2 did not make it to patchwork / netdev
  (v1 -> v2)
  - fix capability check in patch 2
      this could be moved into net/core/sock.c as sk_capable_nouser()
  (rfc -> v1)
  - dropped patch 4: timestamp batching
      due to complexity, as discussed
  - dropped patch 5: default mode
      because it does not really cover all use cases, as discussed
  - added documentation
  - minor fix, see patch 2

Two issues were raised during recent timestamping discussions:
1. looping full packets on the error queue exposes packet headers
2. TCP timestamping with retransmissions generates many timestamps

This RFC patchset is an attempt at addressing both without breaking
legacy behavior.

Patch 1 reintroduces the "no payload" timestamp option, which loops
timestamps onto an empty skb. This reduces the pressure on SO_RCVBUF
from looping many timestamps. It does not reduce the number of recv()
calls needed to process them. The timestamp cookie mechanism developed
in http://patchwork.ozlabs.org/patch/427213/ did, but this is
considerably simpler.

Patch 2 then gives administrators the power to block all timestamp
requests that contain data by unprivileged users. I proposed this
earlier as a backward compatible workaround in the discussion of

  net-timestamp: pull headers for SOCK_STREAM
  http://patchwork.ozlabs.org/patch/414810/

Patch 3 only updates the txtimestamp example to test this option.
Verified that with option '-n', length is zero in all cases and
option '-I' (PKTINFO) stops working.
====================

Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet-timestamp: no-payload option in txtimestamp test
Willem de Bruijn [Fri, 30 Jan 2015 18:29:33 +0000 (13:29 -0500)]
net-timestamp: no-payload option in txtimestamp test

Demonstrate how SOF_TIMESTAMPING_OPT_TSONLY can be used and
test the implementation.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet-timestamp: no-payload only sysctl
Willem de Bruijn [Fri, 30 Jan 2015 18:29:32 +0000 (13:29 -0500)]
net-timestamp: no-payload only sysctl

Tx timestamps are looped onto the error queue on top of an skb. This
mechanism leaks packet headers to processes unless the no-payload
options SOF_TIMESTAMPING_OPT_TSONLY is set.

Add a sysctl that optionally drops looped timestamp with data. This
only affects processes without CAP_NET_RAW.

The policy is checked when timestamps are generated in the stack.
It is possible for timestamps with data to be reported after the
sysctl is set, if these were queued internally earlier.

No vulnerability is immediately known that exploits knowledge
gleaned from packet headers, but it may still be preferable to allow
administrators to lock down this path at the cost of possible
breakage of legacy applications.

Signed-off-by: Willem de Bruijn <willemb@google.com>
----

Changes
  (v1 -> v2)
  - test socket CAP_NET_RAW instead of capable(CAP_NET_RAW)
  (rfc -> v1)
  - document the sysctl in Documentation/sysctl/net.txt
  - fix access control race: read .._OPT_TSONLY only once,
        use same value for permission check and skb generation.
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet-timestamp: no-payload option
Willem de Bruijn [Fri, 30 Jan 2015 18:29:31 +0000 (13:29 -0500)]
net-timestamp: no-payload option

Add timestamping option SOF_TIMESTAMPING_OPT_TSONLY. For transmit
timestamps, this loops timestamps on top of empty packets.

Doing so reduces the pressure on SO_RCVBUF. Payload inspection and
cmsg reception (aside from timestamps) are no longer possible. This
works together with a follow on patch that allows administrators to
only allow tx timestamping if it does not loop payload or metadata.

Signed-off-by: Willem de Bruijn <willemb@google.com>
----

Changes (rfc -> v1)
  - add documentation
  - remove unnecessary skb->len test (thanks to Richard Cochran)
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: rocker: Add support for retrieving port level statistics
David Ahern [Fri, 30 Jan 2015 03:59:33 +0000 (20:59 -0700)]
net: rocker: Add support for retrieving port level statistics

Add support for retrieving port level statistics from device.
Hook is added for ethtool's stats functionality. For example,

$ ethtool -S eth3
NIC statistics:
     rx_packets: 12
     rx_bytes: 2790
     rx_dropped: 0
     rx_errors: 0
     tx_packets: 8
     tx_bytes: 728
     tx_dropped: 0
     tx_errors: 0

Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'switchdev_offload_flags'
David S. Miller [Mon, 2 Feb 2015 07:16:40 +0000 (23:16 -0800)]
Merge branch 'switchdev_offload_flags'

Roopa Prabhu says:

====================
switchdev offload flags

This patch series introduces new offload flags for switchdev.
Kernel network subsystems can use this flag to accelerate
network functions by offloading to hw.

I expect that there will be need for subsystem specific feature
flag in the future.

This patch series currently only addresses bridge driver link
attribute offloads to hardware.

Looking at the current state of bridge l2 offload in the kernel,
    - flag 'self' is the way to directly manage the bridge device in hw via
      the ndo_bridge_setlink/ndo_bridge_getlink calls

    - flag 'master' is always used to manage the in kernel bridge devices
      via the same ndo_bridge_setlink/ndo_bridge_getlink calls

Today these are used separately. The nic offloads use hwmode "vepa/veb" to go
directly to hw with the "self" flag.

At this point i am trying not to introduce any new user facing flags/attributes.
In the model where we want the kernel bridging to be accelerated with
hardware, we very much want the bridge driver to be involved.

In this proposal,
- The offload flag/bit helps switch asic drivers to indicate that they
  accelerate the kernel networking objects/functions
- The user does not have to specify a new flag to do so. A bridge created with
  switch asic ports will be accelerated if the switch driver supports it.
- The user can continue to directly manage l2 in nics (ixgbe) using the
  existing hwmode/self flags
- It also does not stop users from using the 'self' flag to talk to the
  switch asic driver directly
- Involving the bridge driver makes sure the add/del notifications to user
  space go out after both kernel and hardware are programmed

(To selectively offload bridge port attributes,
example learning in hw only etc, we can introduce offload bits for
per bridge port flag attribute as in my previous patch
https://patchwork.ozlabs.org/patch/413211/. I have not included that in this
series)

v2
   - try a different name for the offload flag/bit
   - tries to solve the stacked netdev case by traversing the lowerdev
     list to reach the switch port

v3 -
    - Tested with bond as bridge port for the stacked device case.
      Includes a bond_fix_features change to not ignore the
      NETIF_F_HW_NETFUNC_OFFLOAD flag
    - Some checkpatch fixes

v4 -
    - rename flag to NETIF_F_HW_SWITCH_OFFLOAD
    - add ndo_bridge_setlink/dellink handlers in bond and team drivers as
      suggested by jiri.
    - introduce default ndo_dflt_netdev_switch_port_bridge_setlink/dellink
    handlers that masters can use to call offload api on lowerdevs.
====================

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
9 years agoteam: handle NETIF_F_HW_SWITCH_OFFLOAD flag and add ndo_bridge_setlink/dellink handlers
Roopa Prabhu [Fri, 30 Jan 2015 06:40:17 +0000 (22:40 -0800)]
team: handle NETIF_F_HW_SWITCH_OFFLOAD flag and add ndo_bridge_setlink/dellink handlers

Currently ndo_bridge_setlink and ndo_bridge_dellink handlers point
to the default switchdev handlers

This follows my bonding driver changes.

I have only compile tested this patch. However similar
bonding code has been tested.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: handle NETIF_F_HW_SWITCH_OFFLOAD flag and add ndo_bridge_setlink/dellink...
Roopa Prabhu [Fri, 30 Jan 2015 06:40:16 +0000 (22:40 -0800)]
bonding: handle NETIF_F_HW_SWITCH_OFFLOAD flag and add ndo_bridge_setlink/dellink handlers

We want bond to pick up the offload flag if any of its slaves have it.

NETIF_F_HW_SWITCH_OFFLOAD flag is added to the mask, so that
netdev_increment_features does not ignore it.

This also adds ndo_bridge_setlink and ndo_bridge_dellink handlers.
These currently point to the default handlers provided by the
switchdev api.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agorocker: set feature NETIF_F_HW_SWITCH_OFFLOAD
Roopa Prabhu [Fri, 30 Jan 2015 06:40:15 +0000 (22:40 -0800)]
rocker: set feature NETIF_F_HW_SWITCH_OFFLOAD

This patch sets the NETIF_F_HW_SWITCH_OFFLOAD feature flag on rocker ports

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobridge: offload bridge port attributes to switch asic if feature flag set
Roopa Prabhu [Fri, 30 Jan 2015 06:40:14 +0000 (22:40 -0800)]
bridge: offload bridge port attributes to switch asic if feature flag set

This patch adds support to set/del bridge port attributes in hardware from
the bridge driver.

With this, when the user sends a bridge setlink message with no flags or
master flags set,
   - the bridge driver ndo_bridge_setlink handler sets settings in the kernel
   - calls the swicthdev api to propagate the attrs to the switchdev
hardware

   You can still use the self flag to go to the switch hw or switch port
   driver directly.

With this, it also makes sure a notification goes out only after the
attributes are set both in the kernel and hw.

The patch calls switchdev api only if BRIDGE_FLAGS_SELF is not set.
This is because the offload cases with BRIDGE_FLAGS_SELF are handled in
the caller (in rtnetlink.c).

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoswdevice: add new apis to set and del bridge port attributes
Roopa Prabhu [Fri, 30 Jan 2015 06:40:13 +0000 (22:40 -0800)]
swdevice: add new apis to set and del bridge port attributes

This patch adds two new api's netdev_switch_port_bridge_setlink
and netdev_switch_port_bridge_dellink to offload bridge port attributes
to switch port

(The names of the apis look odd with 'switch_port_bridge',
but am more inclined to change the prefix of the api to something else.
Will take any suggestions).

The api's look at the NETIF_F_HW_SWITCH_OFFLOAD feature flag to
pass bridge port attributes to the port device.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobridge: add flags argument to ndo_bridge_setlink and ndo_bridge_dellink
Roopa Prabhu [Fri, 30 Jan 2015 06:40:12 +0000 (22:40 -0800)]
bridge: add flags argument to ndo_bridge_setlink and ndo_bridge_dellink

bridge flags are needed inside ndo_bridge_setlink/dellink handlers to
avoid another call to parse IFLA_AF_SPEC inside these handlers

This is used later in this series

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonetdev: introduce new NETIF_F_HW_SWITCH_OFFLOAD feature flag for switch device offloads
Roopa Prabhu [Fri, 30 Jan 2015 06:40:11 +0000 (22:40 -0800)]
netdev: introduce new NETIF_F_HW_SWITCH_OFFLOAD feature flag for switch device offloads

This is a high level feature flag for all switch asic offloads

switch drivers set this flag on switch ports. Logical devices like
bridge, bonds, vxlans can inherit this flag from their slaves/ports.

The patch also adds the flag to NETIF_F_ONE_FOR_ALL, so that it gets
propagated to the upperdevices (bridges and bonds).

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: DMA threshold mode or SF mode can be different among multiple device instance
Sonic Zhang [Fri, 30 Jan 2015 05:49:32 +0000 (13:49 +0800)]
stmmac: DMA threshold mode or SF mode can be different among multiple device instance

- In tx_hard_error_bump_tc interrupt, tc should be bumped only when current
device instance is in DMA threshold mode. Check per device xstats.threshold
other than global tc.

- Set per device xstats.threshold to SF_DMA_MODE when current device
instance is set to SF mode.

v2-changes:
- fix ident style

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4: Remove preprocessor check for CONFIG_CXGB4_DCB
Hariprasad Shenai [Fri, 30 Jan 2015 03:19:27 +0000 (08:49 +0530)]
cxgb4: Remove preprocessor check for CONFIG_CXGB4_DCB

In commit dc9daab226aa ("cxgb4: Added support in debugfs to dump
sge_qinfo") a preprocessor check for CONFIG_CXGB4_DCB got added, which should
have been CONFIG_CHELSIO_T4_DCB. After adding the right preprocessor, build
fails due to missing function ethqset2pinfo. Fixing that as well.

V2: Updated description since the patch also fixes build failure

Reported-by: Paul Bolle <pebolle@tiscal.nl>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'hso-next'
David S. Miller [Sun, 1 Feb 2015 20:33:31 +0000 (12:33 -0800)]
Merge branch 'hso-next'

Olivier Sobrie says:

====================
hso: fix some problems in the disconnect path

These patches attempt to fix some problems I observed when the hso
device is disconnected.
Several patches of this serie are fixing crashes or memleaks when a
hso device is disconnected.
This serie of patches is based on v3.18.

changes in v2:
 - Last patch of the serie dropped since another patch fix the issue.
   See http://marc.info/?l=linux-usb&m=142186699418489 for more info.

 - Added an extra patch avoiding name conflicts for the rfkill interface.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: fix rfkill name conflicts
Olivier Sobrie [Fri, 30 Jan 2015 12:22:03 +0000 (13:22 +0100)]
hso: fix rfkill name conflicts

By using only the usb interface number for the rfkill name, we might
have a name conflicts in case two similar hso devices are connected.

In this patch, the name of the hso rfkill interface embed the value
of a counter that is incremented each time a new rfkill interface is
added.

Suggested-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: add missing cancel_work_sync in disconnect()
Olivier Sobrie [Fri, 30 Jan 2015 12:22:02 +0000 (13:22 +0100)]
hso: add missing cancel_work_sync in disconnect()

For hso serial devices, two cancel_work_sync were missing in the
disconnect method.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: update serial_table in usb disconnect method
Olivier Sobrie [Fri, 30 Jan 2015 12:22:01 +0000 (13:22 +0100)]
hso: update serial_table in usb disconnect method

The serial_table is used to map the minor number of the usb serial device
to its associated context. The table is updated in the probe method and
in hso_serial_ref_free() which is called either from the tty cleanup
method or from the usb disconnect method.
This patch ensures that the serial_table is updated in the disconnect
method and no more from the cleanup method to avoid the following
potential race condition.

 - hso_disconnect() is called for usb interface "x". Because the serial
   port was open and because the cleanup method of the tty_port hasn't
   been called yet, hso_serial_ref_free() is not run.
 - hso_probe() is called and fails for a new hso serial usb interface
   "y". The function hso_free_interface() is called and iterates
   over the element of serial_table to find the device associated to
   the usb interface context.
   If the usb interface context of usb interface "y" has been created
   at the same place as for usb interface "x", then the cleanup
   functions are called for usb interfaces "x" and "y" and
   hso_serial_ref_free() is called for both interfaces.
 - release_tty() is called for serial port linked to usb interface "x"
   and possibly crash because the tty_port structure contained in the
   hso_device structure has been freed.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: move tty_unregister outside hso_serial_common_free()
Olivier Sobrie [Fri, 30 Jan 2015 12:22:00 +0000 (13:22 +0100)]
hso: move tty_unregister outside hso_serial_common_free()

The function hso_serial_common_free() is called either by the cleanup
method of the tty or by the usb disconnect method.
In the former case, the usb_disconnect() has been already called
and the sysfs group associated to the device has been removed.
By calling tty_unregister directly from the usb_disconnect() method,
we avoid a warning due to the removal of the sysfs group of the usb
device.

Example of warning:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 778 at fs/sysfs/group.c:225 sysfs_remove_group+0x50/0x94()
sysfs group c0645a88 not found for kobject 'ttyHS5'
Modules linked in:
CPU: 0 PID: 778 Comm: kworker/0:3 Tainted: G        W      3.18.0+ #105
Workqueue: events release_one_tty
[<c000dfe4>] (unwind_backtrace) from [<c000c014>] (show_stack+0x14/0x1c)
[<c000c014>] (show_stack) from [<c0016bac>] (warn_slowpath_common+0x5c/0x7c)
[<c0016bac>] (warn_slowpath_common) from [<c0016c60>] (warn_slowpath_fmt+0x30/0x40)
[<c0016c60>] (warn_slowpath_fmt) from [<c00ddd14>] (sysfs_remove_group+0x50/0x94)
[<c00ddd14>] (sysfs_remove_group) from [<c0221e44>] (device_del+0x30/0x190)
[<c0221e44>] (device_del) from [<c0221fb0>] (device_unregister+0xc/0x18)
[<c0221fb0>] (device_unregister) from [<c0221fec>] (device_destroy+0x30/0x3c)
[<c0221fec>] (device_destroy) from [<c01fe1dc>] (tty_unregister_device+0x2c/0x5c)
[<c01fe1dc>] (tty_unregister_device) from [<c029a428>] (hso_serial_common_free+0x2c/0x88)
[<c029a428>] (hso_serial_common_free) from [<c029a4c0>] (hso_serial_ref_free+0x3c/0xb8)
[<c029a4c0>] (hso_serial_ref_free) from [<c01ff430>] (release_one_tty+0x30/0x84)
[<c01ff430>] (release_one_tty) from [<c00271d4>] (process_one_work+0x21c/0x3c8)
[<c00271d4>] (process_one_work) from [<c0027758>] (worker_thread+0x3d8/0x560)
[<c0027758>] (worker_thread) from [<c002be4c>] (kthread+0xc0/0xcc)
[<c002be4c>] (kthread) from [<c0009630>] (ret_from_fork+0x14/0x24)
---[ end trace cb88537fdc8fa208 ]---

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: replace reset_device work by usb_queue_reset_device()
Olivier Sobrie [Fri, 30 Jan 2015 12:21:59 +0000 (13:21 +0100)]
hso: replace reset_device work by usb_queue_reset_device()

There is no need for a dedicated reset work in the hso driver since
there is already a reset work foreseen in usb_interface that does
the same.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: rename hso_dev into serial in hso_free_interface()
Olivier Sobrie [Fri, 30 Jan 2015 12:21:58 +0000 (13:21 +0100)]
hso: rename hso_dev into serial in hso_free_interface()

In other functions of the driver, variables of type "struct hso_serial"
are denoted by "serial" and variables of type "struct hso_device" are
denoted by "hso_dev". This patch makes the hso_free_interface()
consistent with these notations.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: fix small indentation error
Olivier Sobrie [Fri, 30 Jan 2015 12:21:57 +0000 (13:21 +0100)]
hso: fix small indentation error

Simply remove the useless extra tab.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: fix memory leak in hso_create_rfkill()
Olivier Sobrie [Fri, 30 Jan 2015 12:21:56 +0000 (13:21 +0100)]
hso: fix memory leak in hso_create_rfkill()

When the rfkill interface was created, a buffer containing the name
of the rfkill node was allocated. This buffer was never freed when the
device disappears.

To fix the problem, we put the name given to rfkill_alloc() in
the hso_net structure.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: fix memory leak when device disconnects
Olivier Sobrie [Fri, 30 Jan 2015 12:21:55 +0000 (13:21 +0100)]
hso: fix memory leak when device disconnects

In the disconnect path, tx_buffer should freed like tx_data to avoid
a memory leak when the device disconnects.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: fix crash when device disappears while serial port is open
Olivier Sobrie [Fri, 30 Jan 2015 12:21:54 +0000 (13:21 +0100)]
hso: fix crash when device disappears while serial port is open

When the device disappear, the function hso_disconnect() is called to
perform cleanup. In the cleanup function, hso_free_interface() calls
tty_port_tty_hangup() in view of scheduling a work to hang up the tty if
needed. If the port was not open then hso_serial_ref_free() is called
directly to cleanup everything. Otherwise, hso_serial_ref_free() is called
when the last fd associated to the port is closed.

For each open port, tty_release() will call the close method,
hso_serial_close(), which drops the last kref and call
hso_serial_ref_free() which unregisters, destroys the tty port
and finally frees the structure in which the tty_port structure
is included. Later, in tty_release(), more precisely when release_tty()
is called, the tty_port previously freed is accessed to cancel
the tty buf workqueue and it leads to a crash.

In view of avoiding this crash, we add a cleanup method that is called
at the end of the hangup process and we drop the last kref in this
function when all the ports have been closed, when tty_port is no
more needed and when it is safe to free the structure containing the
tty_port structure.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohso: remove useless header file timer.h
Olivier Sobrie [Fri, 30 Jan 2015 12:21:53 +0000 (13:21 +0100)]
hso: remove useless header file timer.h

No timer related function is used in this driver.

Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv4: icmp: use percpu allocation
Eric Dumazet [Thu, 29 Jan 2015 23:58:09 +0000 (15:58 -0800)]
ipv4: icmp: use percpu allocation

Get rid of nr_cpu_ids and use modern percpu allocation.

Note that the sockets themselves are not yet allocated
using NUMA affinity.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodrivers: net: cpsw: make cpsw_ale.c a module to allow re-use on Keystone
Karicheri, Muralidharan [Thu, 29 Jan 2015 23:15:51 +0000 (18:15 -0500)]
drivers: net: cpsw: make cpsw_ale.c a module to allow re-use on Keystone

NetCP on Keystone has cpsw ale function similar to other TI SoCs
and this driver is re-used. To allow both ti cpsw and keystone netcp
to re-use the driver, convert the cpsw ale to a module and configure
it through Kconfig option CONFIG_TI_CPSW_ALE. Currently it is statically
linked to both TI CPSW and NetCP and this causes issues when the above
drivers are built as dynamic modules. This patch addresses this issue

While at it, fix the Makefile and code to build both netcp_core and
netcp_ethss as dynamic modules. This is needed to support arm allmodconfig.
This also requires exporting of API calls provided by netcp_core so that
both the above can be dynamic modules.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agotcp: use SACK RTTs for CC
Kenneth Klette Jonassen [Thu, 29 Jan 2015 19:08:03 +0000 (20:08 +0100)]
tcp: use SACK RTTs for CC

Current behavior only passes RTTs from sequentially acked data to CC.

If sender gets a combined ACK for segment 1 and SACK for segment 3, then the
computed RTT for CC is the time between sending segment 1 and receiving SACK
for segment 3.

Pass the minimum computed RTT from any acked data to CC, i.e. time between
sending segment 3 and receiving SACK for segment 3.

Signed-off-by: Kenneth Klette Jonassen <kennetkl@ifi.uio.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoirda: use msecs_to_jiffies for conversions
Nicholas Mc Guire [Thu, 29 Jan 2015 17:22:51 +0000 (18:22 +0100)]
irda: use msecs_to_jiffies for conversions

This is only an API consolidation and should make things more readable
it replaces  var * HZ / 1000  constructs by  msecs_to_jiffies(var).

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agorhashtable: Make selftest modular
Geert Uytterhoeven [Thu, 29 Jan 2015 14:40:25 +0000 (15:40 +0100)]
rhashtable: Make selftest modular

Allow the selftest on the resizable hash table to be built modular, just
like all other tests that do not depend on DEBUG_KERNEL.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: mark some potential candidates __read_mostly
Daniel Borkmann [Thu, 29 Jan 2015 11:15:03 +0000 (12:15 +0100)]
net: mark some potential candidates __read_mostly

They are all either written once or extremly rarely (e.g. from init
code), so we can move them to the .data..read_mostly section.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'cpsw_macid'
David S. Miller [Sat, 31 Jan 2015 01:42:07 +0000 (17:42 -0800)]
Merge branch 'cpsw_macid'

Tony Lindgren says:

====================
Changes to cpsw and davinci_emac for getting MAC address

Here are a few patches to add common code for cpsw and davinci_emac for
getting the MAC address. Looks like we can also now add code to get the
MAC address on 3517 but in a slightly different way.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: davinci_emac: Get device MAC on 3517
Tony Lindgren [Wed, 28 Jan 2015 19:33:06 +0000 (11:33 -0800)]
net: davinci_emac: Get device MAC on 3517

Looks like on 3517 davinci_emac MAC address registers have a
different layout compared to dm816x and am33xx.

Let's add a function to get the 3517 MAC address.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: davinci_emac: Get device dm816x MAC address using the cpsw code
Tony Lindgren [Wed, 28 Jan 2015 19:33:05 +0000 (11:33 -0800)]
net: davinci_emac: Get device dm816x MAC address using the cpsw code

At least on dm81xx, we can get the davinci_emac MAC address the same
way as on am33xx cpsw.

Let's also use ether_addr_copy() for davinci_emac while at it.

Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: cpsw: Add a minimal cpsw-common module for shared code
Tony Lindgren [Wed, 28 Jan 2015 19:33:04 +0000 (11:33 -0800)]
net: cpsw: Add a minimal cpsw-common module for shared code

Looks like davinci_emac and cpsw can share some code although the
device registers have a different layout.

At least the code for getting the MAC address using syscon can
be shared by passing the register offset. Let's start with that
and set up a minimal shared cpsw-shared.c.

Cc: Brian Hutchinson <b.hutchman@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'linux-can-next-for-3.20-20150128' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 29 Jan 2015 22:54:45 +0000 (14:54 -0800)]
Merge tag 'linux-can-next-for-3.20-20150128' of git://git./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2015-28-01

this is a pull request of 12 patches for net-next/master.

There are 3 patches by Ahmed S. Darwish, which update the kvaser_usb
driver and add support for the USBcan-II based adapters. Stéphane
Grosjean contributes 7 patches for the peak_usb driver, which add
support for the CANFD USB adapters. I contribute 2 patches which clean
up the peak_usb driver structure a bit.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: gianfar: remove the unneeded check of disabled device
Kevin Hao [Wed, 28 Jan 2015 12:06:48 +0000 (20:06 +0800)]
net: gianfar: remove the unneeded check of disabled device

Since commit cd1e65044d44 ("of/device: Don't register disabled
devices"), the disabled device will not be registered at all. So we
don't need to do the check again in the platform device driver.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agodev: add per net_device packet type chains
Salam Noureddine [Tue, 27 Jan 2015 19:35:48 +0000 (11:35 -0800)]
dev: add per net_device packet type chains

When many pf_packet listeners are created on a lot of interfaces the
current implementation using global packet type lists scales poorly.
This patch adds per net_device packet type lists to fix this problem.

The patch was originally written by Eric Biederman for linux-2.6.29.
Tested on linux-3.16.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Salam Noureddine <noureddine@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agortnetlink: pass link_net to the newlink handler
Nicolas Dichtel [Tue, 27 Jan 2015 10:13:08 +0000 (11:13 +0100)]
rtnetlink: pass link_net to the newlink handler

When IFLA_LINK_NETNSID is used, the netdevice should be built in this link netns
and moved at the end to another netns (pointed by the socket netns or
IFLA_NET_NS_[PID|FD]).

Existing user of the newlink handler will use the netns argument (src_net) to
find a link netdevice or to check some other information into the link netns.
For example, to find a netdevice, two information are required: an ifindex
(usually from IFLA_LINK) and a netns (this link netns).

Note: when using IFLA_LINK_NETNSID and IFLA_NET_NS_[PID|FD], a user may create a
netdevice that stands in netnsX and with its link part in netnsY, by sending a
rtnl message from netnsZ.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agopkt_sched: fq: remove useless TIME_WAIT check
Eric Dumazet [Wed, 28 Jan 2015 14:06:36 +0000 (06:06 -0800)]
pkt_sched: fq: remove useless TIME_WAIT check

TIME_WAIT sockets are not owning any skb.

ip_send_unicast_reply() and tcp_v6_send_response() both use
regular sockets.

We can safely remove a test in sch_fq and save one cache line miss,
as sk_state is far away from sk_pacing_rate.

Tested at Google for about one year.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoact_connmark: fix dependencies better
Arnd Bergmann [Wed, 28 Jan 2015 16:30:09 +0000 (17:30 +0100)]
act_connmark: fix dependencies better

NET_ACT_CONNMARK fails to build if NF_CONNTRACK_MARK is disabled,
and d7924450e14ea4 ("act_connmark: Add missing dependency on
NF_CONNTRACK_MARK") fixed that case, but missed the cased where
NF_CONNTRACK is a loadable module.

This adds the second dependency to ensure that NET_ACT_CONNMARK
can only be built-in if NF_CONNTRACK is also part of the kernel
rather than a loadable module.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: remove sock_iocb
Christoph Hellwig [Wed, 28 Jan 2015 17:04:53 +0000 (18:04 +0100)]
net: remove sock_iocb

The sock_iocb structure is allocate on stack for each read/write-like
operation on sockets, and contains various fields of which only the
embedded msghdr and sometimes a pointer to the scm_cookie is ever used.
Get rid of the sock_iocb and put a msghdr directly on the stack and pass
the scm_cookie explicitly to netlink_mmap_sendmsg.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohisilicon: add some missing curly braces
Dan Carpenter [Wed, 28 Jan 2015 18:58:33 +0000 (21:58 +0300)]
hisilicon: add some missing curly braces

The if block was supposed to have curly braces.  In the current code we
complain about dropped rx packets when we shouldn't.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoopenvswitch: Add support for checksums on UDP tunnels.
Jesse Gross [Thu, 29 Jan 2015 00:32:46 +0000 (16:32 -0800)]
openvswitch: Add support for checksums on UDP tunnels.

Currently, it isn't possible to request checksums on the outer UDP
header of tunnels - the TUNNEL_CSUM flag is ignored. This adds
support for requesting that UDP checksums be computed on transmit
and properly reported if they are present on receive.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge tag 'nfc-next-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo...
David S. Miller [Thu, 29 Jan 2015 06:49:55 +0000 (22:49 -0800)]
Merge tag 'nfc-next-3.20-1' of git://git./linux/kernel/git/sameo/nfc-next

NFC: 3.20 first pull request

This is the first NFC pull request for 3.20.

With this one we have:

- Secure element support for the ST Micro st21nfca driver. This depends
  on a few HCI internal changes in order for example to support more
  than one secure element per controller.

- ACPI support for NXP's pn544 HCI driver. This controller is found on
  many x86 SoCs and is typically enumerated on the ACPI bus there.

- A few st21nfca and st21nfcb fixes.

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocan: peak_usb: add support for PEAK new CANFD USB adapters
Stephane Grosjean [Fri, 23 Jan 2015 10:31:25 +0000 (11:31 +0100)]
can: peak_usb: add support for PEAK new CANFD USB adapters

Add support for the following new PEAK-System technik CANFD USB adapters:

PCAN-USB FD             single CANFD channel USB adapter
PCAN-USB Pro FD         dual CANFD channels USB adapter

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Andri Yngvason <andri.yngvason@marel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: add peak_usb_netif_rx() new function
Stephane Grosjean [Fri, 23 Jan 2015 10:31:24 +0000 (11:31 +0100)]
can: peak_usb: add peak_usb_netif_rx() new function

Add a common function that pushes the skb in the network queue with adding
timestamps information, converted from time values read from the
PEAK USB adapters.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: export pcan_usb_pro functions
Stephane Grosjean [Fri, 23 Jan 2015 10:31:23 +0000 (11:31 +0100)]
can: peak_usb: export pcan_usb_pro functions

Add support for the following new PEAK-System technik CANFD USB adapters:

PCAN-USB FD             single CANFD channel USB adapter
PCAN-USB Pro FD         dual CANFD channels USB adapter

The communication protocol has been developed using some mechanisms that
did exist in the PCAN-USB Pro, thus, this patch also changes some
previously static functions and data into global ones.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: upgrade core to new struct canfd_frame
Stephane Grosjean [Fri, 23 Jan 2015 10:31:22 +0000 (11:31 +0100)]
can: peak_usb: upgrade core to new struct canfd_frame

Upgrade PEAK-System USB adapters core to the new data structures (names) and
callbacks added for the support of the CANFD extension. This specific patch
includes changes that deal with the new struct canfd_frame.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: upgrade core to data bittiming specs
Stephane Grosjean [Fri, 23 Jan 2015 10:31:21 +0000 (11:31 +0100)]
can: peak_usb: upgrade core to data bittiming specs

Upgrade PEAK-System USB adapters core to the new data structures (names) and
callbacks added for the support of the CANFD extension. This specific patch
does the mandatory changes to support new data bittiming specs.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: add adapter BEC callback definition
Stephane Grosjean [Fri, 23 Jan 2015 10:31:20 +0000 (11:31 +0100)]
can: peak_usb: add adapter BEC callback definition

Add the definition of a new callback that enable any PEAK-System CAN USB
adapter to grant read access to its Bus Error Counters value. This ability is
not supported by all the PEAK-System adapters, thus, for those, the callback
pointer will be initiaized to NULL, which is correct regarding the linux-can
device driver specs.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: export ctrlmode_supported to adapter specific definition
Stephane Grosjean [Fri, 23 Jan 2015 10:31:19 +0000 (11:31 +0100)]
can: peak_usb: export ctrlmode_supported to adapter specific definition

Export the ctrlmode_supported value from the core file to each adapter specific
file. This has been mandatory for supporting the new CANFD extension.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: constify struct peak_usb_adapter
Marc Kleine-Budde [Tue, 27 Jan 2015 16:15:39 +0000 (17:15 +0100)]
can: peak_usb: constify struct peak_usb_adapter

A "struct peak_usb_adapter" describes a certain USB adapter, as this doesn't
change during runtime, this patch marks all USB adapter definitions as const.

Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: peak_usb: use ARRAY_SIZE instead of NULL termination for peak_usb_adapters_list
Marc Kleine-Budde [Tue, 27 Jan 2015 15:58:17 +0000 (16:58 +0100)]
can: peak_usb: use ARRAY_SIZE instead of NULL termination for peak_usb_adapters_list

This patch converts the list "static struct peak_usb_adapter
*peak_usb_adapters_list[]" to be used with ARRAY_SIZE not with a NULL
termination, as the size is known during compile time.

Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: kvaser_usb: Add support for the USBcan-II family
Ahmed S. Darwish [Mon, 26 Jan 2015 05:33:10 +0000 (07:33 +0200)]
can: kvaser_usb: Add support for the USBcan-II family

CAN to USB interfaces sold by the Swedish manufacturer Kvaser are
divided into two major families: 'Leaf', and 'USBcanII'.  From an
Operating System perspective, the firmware of both families behave
in a not too drastically different fashion.

This patch adds support for the USBcanII family of devices to the
current Kvaser Leaf-only driver.

CAN frames sending, receiving, and error handling paths has been
tested using the dual-channel "Kvaser USBcan II HS/LS" dongle. It
should also work nicely with other products in the same category.

List of new devices supported by this driver update:

         - Kvaser USBcan II HS/HS
         - Kvaser USBcan II HS/LS
         - Kvaser USBcan Rugged ("USBcan Rev B")
         - Kvaser Memorator HS/HS
         - Kvaser Memorator HS/LS
         - Scania VCI2 (if you have the Kvaser logo on top)

Signed-off-by: Ahmed S. Darwish <ahmed.darwish@valeo.com>
Acked-by: Andri Yngvason <andri.yngvason@marel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: kvaser_usb: Consolidate and unify state change handling
Ahmed S. Darwish [Mon, 26 Jan 2015 05:29:15 +0000 (07:29 +0200)]
can: kvaser_usb: Consolidate and unify state change handling

Replace most of the can interface's state and error counters
handling with the new can-dev can_change_state() mechanism.

Suggested-by: Andri Yngvason <andri.yngvason@marel.com>
Signed-off-by: Ahmed S. Darwish <ahmed.darwish@valeo.com>
Acked-by: Andri Yngvason <andri.yngvason@marel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agocan: kvaser_usb: Update interface state before exiting on OOM
Ahmed S. Darwish [Mon, 26 Jan 2015 05:27:19 +0000 (07:27 +0200)]
can: kvaser_usb: Update interface state before exiting on OOM

Update all of the can interface's state and error counters before
trying any skb allocation that can actually fail with -ENOMEM.

Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ahmed S. Darwish <ahmed.darwish@valeo.com>
Acked-by: Andri Yngvason <andri.yngvason@marel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
9 years agoMerge branch 'stmmac-pci'
David S. Miller [Wed, 28 Jan 2015 05:08:13 +0000 (21:08 -0800)]
Merge branch 'stmmac-pci'

Andy Shevchenko says:

====================
stmmac: Enable Intel Quark SoC X1000 Ethernet support

This is third version of the patch series [1] to bring network card support to
Intel Quark SoC.

The series has been tested on Intel Galileo board.

Changelog v3:
 - rebase on top of recent net-next
 - rework an approach to get the custom configuration
 - rework an approach how to get unique bus_id
 - improve DMI lookup function

[1] http://www.spinics.net/lists/netdev/msg296010.html
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: pci: add MSI support for Intel Quark X1000
Kweh, Hock Leong [Tue, 27 Jan 2015 19:44:49 +0000 (21:44 +0200)]
stmmac: pci: add MSI support for Intel Quark X1000

In Intel Quark SoC X1000, both of the Ethernet controllers support
MSI interrupt handling. This patch enables them to use MSI interrupt
servicing in stmmac_pci for Intel Quark X1000.

Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: pci: introduce Intel Quark X1000 runtime detection
Andy Shevchenko [Tue, 27 Jan 2015 19:44:48 +0000 (21:44 +0200)]
stmmac: pci: introduce Intel Quark X1000 runtime detection

This patch introduces run-time board detection through DMI and MAC-PHY
configuration function used by quark_default_data() during initialization. It
fills up the phy_addr for Galileo and Galileo Gen2 boards to indicate that the
Ethernet MAC controller is or is not connected to any PHY.

The implementation takes into consideration for future expansion in Quark
series boards that may have different PHY address that is linked to its MAC
controllers.

This piece of work is derived from Bryan O'Donoghue's initial work for Quark
X1000 enabling.

Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agostmmac: pci: add support for Intel Quark X1000
Kweh, Hock Leong [Tue, 27 Jan 2015 19:44:47 +0000 (21:44 +0200)]
stmmac: pci: add support for Intel Quark X1000

The Intel Quark SoC X1000 provides two 10/100 Mbps Ethernet MAC
controllers which may or may not be connected to PHY on board.
This MAC controller only supports RMII PHY. This patch add Quark
PCI ID as well as Quark default platform data info to this driver.

Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: netcp: remove unused kconfig option and code
Karicheri, Muralidharan [Tue, 27 Jan 2015 14:49:54 +0000 (09:49 -0500)]
net: netcp: remove unused kconfig option and code

Currently CPTS is built into the netcp driver even though there is no
call out to the CPTS driver. This patch removes the dependency in Kconfig
and remove cpts.o from the Makefile for NetCP.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocxgb4: Move firmware version MACRO to t4fw_version.h
Hariprasad Shenai [Tue, 27 Jan 2015 14:42:52 +0000 (20:12 +0530)]
cxgb4: Move firmware version MACRO to t4fw_version.h

Move firmware version MACRO to a new t4fw_version.h file so that csiostor driver
can also use it.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agocsiostor:T5 Firmware fix and cleanup.
Praveen Madhavan [Tue, 27 Jan 2015 14:16:37 +0000 (19:46 +0530)]
csiostor:T5 Firmware fix and cleanup.

This patch fix is to use default firmware configuration files
present in the adapter incase if not available in standard
/lib/firmware/* dir. Additional cleanup is done to reuse flash
related defines from cxgb4 header file.

Please apply over net-next since it depends on previous commit.

Signed-off-by: Praveen Madhavan <praveenm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'mlx4-next'
David S. Miller [Wed, 28 Jan 2015 01:13:01 +0000 (17:13 -0800)]
Merge branch 'mlx4-next'

Amir Vadai says:

====================
Mellanox ethernet driver updates Jan-27-2015

This patchset introduces some bug fixes, code cleanups and support in a new
firmware event called recoverable error events.

Patches were applied and tested against commit b8665c6 ("net: dsa/mv88e6352:
make mv88e6352_wait generic")

Changes from V0:
- Patch 6/11 ("net/mlx4_core: Fix struct mlx4_vhcr_cmd to make implicit padding
  explicit"):
  - Removed __packed
  - Rephrased commit message

- Added a new patch by Majd ("net/mlx4_core: Update the HCA core clock frequency
  after INIT_PORT")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Update the HCA core clock frequency after INIT_PORT
Majd Dibbiny [Tue, 27 Jan 2015 13:58:09 +0000 (15:58 +0200)]
net/mlx4_core: Update the HCA core clock frequency after INIT_PORT

The firmware might change the hca core clock frequency after the driver
issues the INIT_PORT command. Therefore we need to query the new
value again and save in to the cached dev caps.

Fixes: ddd8a6c1 ('net/mlx4_core: Read HCA frequency and map internal clock')
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Fix device capabilities dumping
Or Gerlitz [Tue, 27 Jan 2015 13:58:08 +0000 (15:58 +0200)]
net/mlx4_core: Fix device capabilities dumping

We are dumping device capabilities which are supported both by the
firmware and the driver. Align the array that holds the capability
strings with this practice.

Reported-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4: Fix memory corruption in mlx4_MAD_IFC_wrapper
Matan Barak [Tue, 27 Jan 2015 13:58:07 +0000 (15:58 +0200)]
net/mlx4: Fix memory corruption in mlx4_MAD_IFC_wrapper

Fix a memory corruption at mlx4_MAD_IFC_wrapper.

A table of size dev->caps.pkey_table_len[port]*sizeof(*table)
was allocated, but get_full_pkey_table() assumes that the number
of entries in the table is a multiplication of 32 (which isn't always
correct).

Fixes: 0a9a018 ('mlx4: MAD_IFC paravirtualization')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_en: Use ethtool cmd->autoneg as a hint for ethtool set settings
Saeed Mahameed [Tue, 27 Jan 2015 13:58:06 +0000 (15:58 +0200)]
net/mlx4_en: Use ethtool cmd->autoneg as a hint for ethtool set settings

Use cmd->autoneg as a user hint to decide what to set in ethtool set settings callback.
When cmd->autoneg == AUTONEG_ENABLE set according to ethtool->advertise otherwise,
set according to ethtool->speed.

Usage:
- ethtool -s eth<x> speed 56000 autoneg off
- ethtool -s eth<x> advertise 0x800000 autoneg on

While we're here:
- Move proto_admin masking outcome check to be adjacent to the operation.
- Move en_warn("port reset..") print to "port reset" block.

Fixes: 312df74 ("net/mlx4_en: mlx4_en_set_settings() always fails when autoneg is set")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Remove duplicate code line from procedure mlx4_bf_alloc
Jack Morgenstein [Tue, 27 Jan 2015 13:58:05 +0000 (15:58 +0200)]
net/mlx4_core: Remove duplicate code line from procedure mlx4_bf_alloc

mlx4_bf_alloc had an unnecessary/duplicate code line. Did no harm,
but not good practice.

Reported by the Mellanox Beijing team.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Fix struct mlx4_vhcr_cmd to make implicit padding explicit
Jack Morgenstein [Tue, 27 Jan 2015 13:58:04 +0000 (15:58 +0200)]
net/mlx4_core: Fix struct mlx4_vhcr_cmd to make implicit padding explicit

Struct mlx4_vhcr was implicitly padded by the gcc compiler on 64-bit
architectures.

This commit makes that padding explicit, to prevent issues with
changing compilers and with incompatibilities between 32-bit architecture
implicit padding and 64-bit architecture implicit padding.

This structure is used in virtualization for communication between
the Host and its Guests. The explicit padding allows 64-bit Hosts
(old and new) to continue to interoperate with 64-bit Guests (old and new).

However, without this fix, 64-bit Hosts could not interoperate with 32-bit
Guests (since these did not insert the padding dword). With this fix,
32-bit Guests will be able to interoperate with 64-bit Hosts (since
the structure offsets will be identical on both).

Reported-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Fix HW2SW_EQ to conform to the firmware spec
Jack Morgenstein [Tue, 27 Jan 2015 13:58:03 +0000 (15:58 +0200)]
net/mlx4_core: Fix HW2SW_EQ to conform to the firmware spec

The driver incorrectly assigned an out-mailbox to this command,
and used an opcode modifier = 0, which is a reserved value (it
should use opcode modifier = 1).

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Adjust command timeouts to conform to the firmware spec
Jack Morgenstein [Tue, 27 Jan 2015 13:58:02 +0000 (15:58 +0200)]
net/mlx4_core: Adjust command timeouts to conform to the firmware spec

The firmware spec states that the timeout for all commands should be 60 seconds.

In the past, the spec indicated that there were several classes of timeout
(short, medium, and long).  The driver has these different timeout classes.
We leave the class differentiation in the driver as-is (to protect against any
future spec changes), but set the timeout for all classes to be 60 seconds.

In addition, we fix a few commands which had hard-coded numeric timeouts specified.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Fix mem leak in SRIOV mlx4_init_one error flow
Jack Morgenstein [Tue, 27 Jan 2015 13:58:01 +0000 (15:58 +0200)]
net/mlx4_core: Fix mem leak in SRIOV mlx4_init_one error flow

Structs allocated for the resource tracker must be freed in
the error flow.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Add reserved lkey for VFs to QUERY_FUNC_CAP
Jack Morgenstein [Tue, 27 Jan 2015 13:58:00 +0000 (15:58 +0200)]
net/mlx4_core: Add reserved lkey for VFs to QUERY_FUNC_CAP

The reserved lKey is different for each VF.
A base lkey value is returned in QUERY_DEV_CAP at offset 0x98.

The reserved L_key value for a VF is:
    VF_lkey = base_lkey + (VF_number << 8).

This VF L_key value should be returned in QUERY_FUNC_CAP
(opcode-modifier = 0) at offset 0x48.

To indicate that the lkey value at offset 0x48 is valid, the Hypervisor
sets a flag bit in dword 0x0, offset 27 in the QUERY_FUNC_CAP wrapper
function.

When the VF calls QUERY_FUNC_CAP, it should check if this flag bit is set.
If it is set, the VF should take the reserved lkey value at offset 0x48.
If the bit is not set, the VF should not use a reserved lkey
(i.e., should set its reserved lkey value to 0).

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet/mlx4_core: Add bad-cable event support
Jack Morgenstein [Tue, 27 Jan 2015 13:57:59 +0000 (15:57 +0200)]
net/mlx4_core: Add bad-cable event support

If the firmware can detect a bad cable, allow it to generate an
event, and print the problem in the log.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agovxlan: advertise link netns in fdb messages
Nicolas Dichtel [Mon, 26 Jan 2015 13:10:53 +0000 (14:10 +0100)]
vxlan: advertise link netns in fdb messages

Previous commit is based on a wrong assumption, fdb messages are always sent
into the netns where the interface stands (see vxlan_fdb_notify()).

These fdb messages doesn't embed the rtnl attribute IFLA_LINK_NETNSID, thus we
need to add it (useful to interpret NDA_IFINDEX or NDA_DST for example).

Note also that vxlan_nlmsg_size() was not updated.

Fixes: 193523bf9373 ("vxlan: advertise netns of vxlan dev in fdb msg")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'bonding-next'
David S. Miller [Wed, 28 Jan 2015 01:09:09 +0000 (17:09 -0800)]
Merge branch 'bonding-next'

Jonathan Toppins says:

====================
bonding: various 802.3ad fixes

This patch series is a forward porting of patches we (Cumulus) are shipping
in our 3.2 series kernels. These fixes attempt to make 802.3ad bonding mode
more predictable in certian state machine transtions in addition to fixing
802.3ad bond carrier determination when bonding min_links option is changed.
Specific notes are contained within each patch.

For this patch series there are no userspace facing changes, a diff between
the modinfo output showed no difference. However, there are behavioral
facing changes, primarily in the bond carrier state. Please make sure to
review carefully.

v2:
 * fixed some style issues
 * dropped a portion of patch 1 in favor of more testing on my side
====================

Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: cleanup and remove dead code
Jonathan Toppins [Mon, 26 Jan 2015 06:17:01 +0000 (01:17 -0500)]
bonding: cleanup and remove dead code

fix sparse warning about non-static function

drivers/net/bonding/bond_main.c:3737:5: warning: symbol
'bond_3ad_xor_xmit' was not declared. Should it be static?

Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: fix LACP PDU not sent on slave port sometimes
Satish Ashok [Mon, 26 Jan 2015 06:17:00 +0000 (01:17 -0500)]
bonding: fix LACP PDU not sent on slave port sometimes

When a slave is added to a bond and it is not in full duplex mode,
AD_PORT_LACP_ENABLED flag is cleared, due to this LACP PDU is not sent
on slave. When the duplex is changed to full, the flag needs to be set
to send LACP PDU.

Cc: Andy Gospodarek <gospo@cumulusnetworks.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Satish Ashok <sashok@cumulusnetworks.com>
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: fix incorrect lacp mux state when agg not active
Wilson Kok [Mon, 26 Jan 2015 06:16:59 +0000 (01:16 -0500)]
bonding: fix incorrect lacp mux state when agg not active

This patch attempts to fix the following problems when an actor or
partner's aggregator is not active:
    1. a slave's lacp port state is marked as AD_STATE_SYNCHRONIZATION
       even if it is attached to an inactive aggregator. LACP advertises
       this state to the partner, making the partner think he can move
       into COLLECTING_DISTRIBUTING state even though this link will not
       pass traffic on the local side

    2. a slave goes into COLLECTING_DISTRIBUTING state without checking
       if the aggregator is actually active

    3. when in COLLECTING_DISTRIBUTING state, the partner parameters may
       change, e.g. the partner_oper_port_state.SYNCHRONIZATION. The
       local mux machine is not reacting to the change and continue to
       keep the slave and bond up

    4. When bond slave leaves an inactive aggregator and joins an active
       aggregator, the actor oper port state need to update to SYNC state.

v2:
 * fix style issues in bond_3ad.c

Cc: Andy Gospodarek <gospo@cumulusnetworks.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: fix bond_open() don't always set slave active flag
Wilson Kok [Mon, 26 Jan 2015 06:16:58 +0000 (01:16 -0500)]
bonding: fix bond_open() don't always set slave active flag

Mode 802.3ad, fix incorrect bond slave active state when slave is not in
active aggregator. During bond_open(), the bonding driver always sets
the slave active flag to true if the bond is not in active-backup, alb,
or tlb modes. Bonding should let the aggregator selection logic set the
active flag when in 802.3ad mode.

Cc: Andy Gospodarek <gospo@cumulusnetworks.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agobonding: update bond carrier state when min_links option changes
Jonathan Toppins [Mon, 26 Jan 2015 06:16:57 +0000 (01:16 -0500)]
bonding: update bond carrier state when min_links option changes

Cc: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohyperv: match wait_for_completion_timeout return type
Nicholas Mc Guire [Sun, 25 Jan 2015 14:48:23 +0000 (15:48 +0100)]
hyperv: match wait_for_completion_timeout return type

return type of wait_for_completion_timeout is unsigned long not int, this
patch just fixes up the declarations.

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agohyperv: netvsc.c: match wait_for_completion_timeout return type
Nicholas Mc Guire [Sun, 25 Jan 2015 14:46:31 +0000 (15:46 +0100)]
hyperv: netvsc.c: match wait_for_completion_timeout return type

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
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 [Wed, 28 Jan 2015 00:59:56 +0000 (16:59 -0800)]
Merge git://git./linux/kernel/git/davem/net

Conflicts:
arch/arm/boot/dts/imx6sx-sdb.dts
net/sched/cls_bpf.c

Two simple sets of overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoNFC: Add ACPI support for NXP PN544
Robert Dolca [Mon, 26 Jan 2015 11:13:37 +0000 (13:13 +0200)]
NFC: Add ACPI support for NXP PN544

Currently there is no support for ACPI.
This patch uses the following configuration:
- Device id: NXP5440
- Pin mapping:
- 0 IRQ pin
- 1 enable pin
- 2 firmware pin

Signed-off-by: Robert Dolca <robert.dolca@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
9 years agoNFC: PN544: GPIO access that may sleep
Robert Dolca [Mon, 26 Jan 2015 11:13:36 +0000 (13:13 +0200)]
NFC: PN544: GPIO access that may sleep

gpio_set_value was replaced with gpio_set_value_cansleep in order
to allow GPIO access that may sleep. This is particularelly useful
when GPIO is accessed using busses like I2C, SPI, USB

Signed-off-by: Robert Dolca <robert.dolca@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
9 years agoNFC: dts: st21nfca: Document ese-present & uicc-present DTS property
Christophe Ricard [Tue, 27 Jan 2015 00:18:20 +0000 (01:18 +0100)]
NFC: dts: st21nfca: Document ese-present & uicc-present DTS property

On st21nfca, the mechanism to enable a secure element needs to add 2
properties in order manage the SWP line correctly.

Document ese-present and uicc-present properties.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
9 years agoNFC: st21nfca: Adding support for secure element
Christophe Ricard [Tue, 27 Jan 2015 00:18:19 +0000 (01:18 +0100)]
NFC: st21nfca: Adding support for secure element

st21nfca has 1 physical SWP line and can support up to 2 secure elements
(UICC & eSE) thanks to an external switch managed with a gpio.

The platform integrator needs to specify thanks to 2 initialization
properties, uicc-present and ese-present, if it is suppose to have uicc
and/or ese. Of course if the platform does not have an external switch,
only one kind of secure element can be supported. Those parameters are
under platform integrator responsibilities.

During initialization, the white_list will be set according to those
parameters.

The discovery_se function will assume a secure element is physically
present according to uicc-present and ese-present values and will add it
to the secure element list. On ese activation, the atr is retrieved to
calculate a command exchange timeout based on the first atr(TB) value.

The se_io will allow to transfer data over SWP. 2 kind of events may appear
after a data is sent over:
- ST21NFCA_EVT_TRANSMIT_DATA when receiving an apdu answer
- ST21NFCA_EVT_WTX_REQUEST when the secure element needs more time than
expected to compute a command. If this timeout expired, a first recovery
tentative consist to send a simple software reset proprietary command.
If this tentative still fail, a second recovery tentative consist to send
a hardware reset proprietary command.
This function is only relevant for eSE like secure element.

This patch also change the way a pipe is referenced. There can be
different pipe connected to the same gate with different host destination
(ex: CONNECTIVITY). In order to keep host information every pipe are
reference with a tuple (gate, host). In order to reduce changes, we are
keeping unchanged the way a gate is addressed on the Terminal Host.
However, this is working because we consider the apdu reader gate is only
present on the eSE slot also the connectivity gate cannot give a reliable
value; it will give the latest stored pipe value.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
9 years agoNFC: hci: Remove nfc_hci_pipe2gate function
Christophe Ricard [Tue, 27 Jan 2015 00:18:18 +0000 (01:18 +0100)]
NFC: hci: Remove nfc_hci_pipe2gate function

With the newly introduced pipes table hci_dev fields,
the nfc_hci_pipe2gate routine is no longer needed.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>