GitHub/moto-9609/android_kernel_motorola_exynos9610.git
10 years agoieee802154: ensure that first RF212 state comes from TRX_OFF
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:13 +0000 (11:34 +0100)]
ieee802154: ensure that first RF212 state comes from TRX_OFF

A documented erratum of the RF212 chip describes that some versions of
RF212 may not be properly reset by the standard reset procedure. The
described workaround seems to not fully work either; my RF212 chips will
not correctly receive any frames unless they are taken from RX mode to
TRX_OFF and back to RX mode, effectively forcing a up-down-up-cycle.
Going to TRX_OFF and to RX without intermediate state changes at least
once fixes this.

The same transition is allowed for RF230, so simply do it all the time.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add support for setting CCA energy detection levels
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:12 +0000 (11:34 +0100)]
ieee802154: add support for setting CCA energy detection levels

Since three of the four clear channel assesment modes make use of energy
detection, provide an API to set the energy detection threshold.
Driver support for this is available in at86rf230 for the RF212 chips.
Since for these chips the minimal energy detection threshold depends on
page and channel used, add a field to struct at86rf230_local that stores
the minimal threshold. Actual ED thresholds are configured as offsets
from this value.

For RF212, setting the ED threshold will not work before a channel/page
has been set due to the dependency of energy detection in the chip and
the actual channel/page selected.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add support for CCA mode in wpan phys
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:11 +0000 (11:34 +0100)]
ieee802154: add support for CCA mode in wpan phys

The standard describes four modes of clear channel assesment: "energy
above threshold", "carrier found", and the logical and/or of these two.
Support for CCA mode setting is included in the at86rf230 driver,
predicated for RF212 chips.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add support for listen-before-talk in wpan_phy
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:10 +0000 (11:34 +0100)]
ieee802154: add support for listen-before-talk in wpan_phy

Listen-before-talk is an alternative to CSMA in uncoordinated networks
and prescribed by european regulations if one wants to have a device
with radio duty cycles above 10% (or less in some bands). Add a phy
property to enable/disable LBT in the phy, including support in the
at86rf230 driver for RF212 chips.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: support 100kbps QPSK/EU in at86rf230
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:09 +0000 (11:34 +0100)]
ieee802154: support 100kbps QPSK/EU in at86rf230

The standard assigns channel 0 on page 2 to be 100kbps QPSK in the
868.3MHz band. Add support to the at86rf230 driver for this channel and
page, at the moment predicated only for the RF212 chip.

Per the datasheet, configurations for page 0, channels 0 to 10 and page
2, channels 0 to 10 differ only in the BPSK_QPSK bit. Support for
channels 1 to 10 is untested.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add TX power control to wpan_phy
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:08 +0000 (11:34 +0100)]
ieee802154: add TX power control to wpan_phy

Replace the current u8 transmit_power in wpan_phy with s8 transmit_power.
The u8 field contained the actual tx power and a tolerance field,
which no physical radio every used. Adjust sysfs entries to keep
compatibility with userspace, give tolerances of +-1dB statically there.

This patch only adds support for this in the at86rf230 driver and the
RF212 chip. Configuration calculation for RF212 is also somewhat basic,
but does the job - the RF212 datasheet gives a large table with
suggested values for combinations of TX power and page/channel, if this
does not work well, we might have to copy the whole table.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: default to AACK in at86rf230
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:07 +0000 (11:34 +0100)]
ieee802154: default to AACK in at86rf230

The current IEEE802.15.4 stack assumes that a radio will never deliver
packets with a bad CRC into the stack, as required by the standard.
at86rf230 driven radios violates this assumption because of another
incompatibility: devices are required to send ACKs if requested by a
sender, but RF2xx will only send ACKs from a special receive mode that
is currently not used by the driver.

Enable this receive mode to fix both bugs. Frames with bad CRCs will not
be received at all, and ACKs will be sent if so requested.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add basic support for RF212 to at86rf230 driver
Phoebe Buckheister [Mon, 17 Feb 2014 10:34:06 +0000 (11:34 +0100)]
ieee802154: add basic support for RF212 to at86rf230 driver

Since the AT86RF2xy chips are mostly compatible, this is only a small
change to the actual driver code. The at86rf230 driver already supports the
RF212 in most places, only three small adjustments are required:

 * force the initial state after P_ON to FORCE_TRX_OFF to work around a
   documented erratum
 * channels_supported depends on the frequency of the transceiver, and
   thus is_rf212
 * do early detection of chip version select an appropriate _ops struct
   based on the chip version.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'phy'
David S. Miller [Mon, 17 Feb 2014 21:40:24 +0000 (16:40 -0500)]
Merge branch 'phy'

Florian Fainelli says:

====================
net: phy: soft reset rework for 10G PHYs

As reported by Shaohui, 10G PHYs may have a slightly more complex reset
sequence for which a BMCR_RESET software reset might not suffice. This
patchset offers a solution for those by allowing them to implement their
own soft_reset() callback. Finally there is an update to the PHY library
Documentation to cover for the newly added callbacks of the PHY driver
structure.

Changes in v2:
- fixed callback testing
- fixed typo in Documentation
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDocumentation: networking: update phy.txt with recent changes
Florian Fainelli [Mon, 17 Feb 2014 21:34:04 +0000 (13:34 -0800)]
Documentation: networking: update phy.txt with recent changes

The PHY library was missing a bunch of newly added PHY driver callbacks
along with a smallish description of what they do, fix that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: allow PHY drivers to implement their own software reset
Florian Fainelli [Mon, 17 Feb 2014 21:34:03 +0000 (13:34 -0800)]
net: phy: allow PHY drivers to implement their own software reset

As pointed out by Shaohui, most 10G PHYs out there have a non-standard
compliant software reset sequence, eventually something much more
complex than just toggling the BMCR_RESET bit. Allow PHY driver to
implement their own soft_reset() callback to deal with that. If no
callback is provided, call into genphy_soft_reset() which makes sure the
existing behavior is kept intact.

Reported-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: move PHY software reset to genphy_soft_reset
Florian Fainelli [Mon, 17 Feb 2014 21:34:02 +0000 (13:34 -0800)]
net: phy: move PHY software reset to genphy_soft_reset

As pointed out by Shaohui, this function is generic for 10/100/1000
PHYs, but 10G PHYs might have a slightly different reset sequence which
prevents most of them from using this function.

Move the BMCR_RESET based software resent sequence to
genphy_soft_reset() in preparation for allowing PHY drivers to implement
a soft_reset() callback.

Reported-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Cleanup the netvsc receive callback functio
KY Srinivasan [Mon, 17 Feb 2014 00:38:45 +0000 (16:38 -0800)]
Drivers: net: hyperv: Cleanup the netvsc receive callback functio

Get rid of the buffer allocation in the receive path for normal packets.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Cleanup the receive path
KY Srinivasan [Mon, 17 Feb 2014 00:38:44 +0000 (16:38 -0800)]
Drivers: net: hyperv: Cleanup the receive path

Make the receive path a little more efficient by parameterizing the
required state rather than re-establishing that state.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDrivers: net: hyperv: Get rid of the rndis_filter_packet structure
KY Srinivasan [Mon, 17 Feb 2014 00:38:43 +0000 (16:38 -0800)]
Drivers: net: hyperv: Get rid of the rndis_filter_packet structure

This structure is redundant; get rid of it make the code little more efficient -
get rid of the unnecessary indirection.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet:cpsw: Pass unhandled ioctl's on to generic phy ioctl
Stefan Sørensen [Sun, 16 Feb 2014 13:54:25 +0000 (14:54 +0100)]
net:cpsw: Pass unhandled ioctl's on to generic phy ioctl

This patch allows the use of a generic timestamping phy connected
to the cpsw if CPTS support is not enabled. This also adds support
of the SIOCGMIIREG and SIOCSMIIREG, and moves handling of SIOCGMIIPHY
to the generic driver.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Reviewed-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: Convert memcpy(foo, bar, ETH_ALEN) to ether_addr_copy(foo, bar)
Joe Perches [Sun, 16 Feb 2014 00:02:17 +0000 (16:02 -0800)]
bonding: Convert memcpy(foo, bar, ETH_ALEN) to ether_addr_copy(foo, bar)

ether_addr_copy is smaller and faster for some architectures.

This relies on a stack frame being at least __aligned(2)
for one use of an Ethernet address on the stack.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: Convert c99 comments
Joe Perches [Sun, 16 Feb 2014 00:02:03 +0000 (16:02 -0800)]
bonding: Convert c99 comments

Neatening only.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: Neaten pr_<level>
Joe Perches [Sun, 16 Feb 2014 00:01:45 +0000 (16:01 -0800)]
bonding: Neaten pr_<level>

Add missing terminating newlines.
Convert uses of pr_info to pr_cont in bond_check_params.
Standardize upper/lower case styles.
Typo fixes, remove unnecessary parentheses and periods.
Alignment neatening.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: Convert pr_warning to pr_warn, neatening
Joe Perches [Sat, 15 Feb 2014 23:57:04 +0000 (15:57 -0800)]
bonding: Convert pr_warning to pr_warn, neatening

Use more current logging style.

Coalesce formats, realign arguments, drop unnecessary periods.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocaif: delete unnecessary field initialization
Julia Lawall [Sat, 15 Feb 2014 07:36:13 +0000 (08:36 +0100)]
caif: delete unnecessary field initialization

On success, the function netdev_alloc_skb initializes the dev field of its
result to its first argument, so this doesn't have to be done in the
calling context.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression skb,privn,e;
@@

skb = netdev_alloc_skb(privn,...);
... when strict
(
-skb->dev = privn;
|
?skb = e
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDocumentation: broadcom-bcmgenet: add better clocks documentation
Florian Fainelli [Fri, 14 Feb 2014 23:21:42 +0000 (15:21 -0800)]
Documentation: broadcom-bcmgenet: add better clocks documentation

Document the required "clocks" phandles and their corresponding
"clock-names" properties for the two clocks used by the GENET hardware
block ("enet" and "enet-wol").

CC: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: correct usage of spin_lock() vs spin_lock_bh()
Jon Paul Maloy [Fri, 14 Feb 2014 21:40:44 +0000 (16:40 -0500)]
tipc: correct usage of spin_lock() vs spin_lock_bh()

I commit e099e86c9e24fe9aff36773600543eb31d8954d
("tipc: add node_lock protection to link lookup function")
we are calling spin_lock(&node->lock) directly instead of indirectly
via the tipc_node_lock(node) function. However, tipc_node_lock() is
using spin_lock_bh(), not spin_lock(), something leading to
unbalanced usage in one place, and a smatch warning.

We fix this by consistently using tipc_node_lock()/unlock() in
in the places touched by the mentioned commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: fix a loop style problem
Jon Paul Maloy [Fri, 14 Feb 2014 21:40:43 +0000 (16:40 -0500)]
tipc: fix a loop style problem

In commit 7d33939f475d403e79124e3143d7951dcfe8629f
("tipc: delay delete of link when failover is needed") we
introduced a loop for finding and removing a link pointer
in an array. The removal is done after we have left the loop,
giving the impression that one may remove the wrong pointer
if no matching element is found.

This is not really a bug, since we know that there will always
be a matching element, but it looks wrong, and causes a smatch
warning.

We fix this loop with this commit.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoip_tunnel: return more precise errno value when adding tunnel fails
Florian Westphal [Fri, 14 Feb 2014 12:14:39 +0000 (13:14 +0100)]
ip_tunnel: return more precise errno value when adding tunnel fails

Currently this always returns ENOBUFS, because the return value of
__ip_tunnel_create is discarded.

A more common failure is a duplicate name (EEXIST).  Propagate the real
error code so userspace can display a more meaningful error message.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoopenvswitch: rename ->sync to ->syncp
WANG Cong [Fri, 14 Feb 2014 23:10:46 +0000 (15:10 -0800)]
openvswitch: rename ->sync to ->syncp

Openvswitch defines u64_stats_sync as ->sync rather than ->syncp,
so fails to compile with netdev_alloc_pcpu_stats(). So just rename it to ->syncp.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 1c213bd24ad04f4430031 (net: introduce netdev_alloc_pcpu_stats() for drivers)
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding:fix checkpatch warnings braces {}
Wang Yufen [Fri, 14 Feb 2014 09:15:17 +0000 (17:15 +0800)]
bonding:fix checkpatch warnings braces {}

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding:fix checkpatch warnings braces {}
Wang Yufen [Fri, 14 Feb 2014 09:15:16 +0000 (17:15 +0800)]
bonding:fix checkpatch warnings braces {}

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding:fix checkpatch warnings braces {}
Wang Yufen [Fri, 14 Feb 2014 09:15:15 +0000 (17:15 +0800)]
bonding:fix checkpatch warnings braces {}

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding:fix checkpatch warnings braces {}
Wang Yufen [Fri, 14 Feb 2014 09:15:14 +0000 (17:15 +0800)]
bonding:fix checkpatch warnings braces {}

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding:fix checkpatch errors comments and space
Wang Yufen [Fri, 14 Feb 2014 09:15:13 +0000 (17:15 +0800)]
bonding:fix checkpatch errors comments and space

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding:fix checkpatch errors with foo* bar|foo * bar
Wang Yufen [Fri, 14 Feb 2014 09:15:12 +0000 (17:15 +0800)]
bonding:fix checkpatch errors with foo* bar|foo * bar

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoappletalk: fix checkpatch error with indent
wangweidong [Fri, 14 Feb 2014 07:43:46 +0000 (15:43 +0800)]
appletalk: fix checkpatch error with indent

checkpatch error: switch and case should be at the same indent.

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoappletalk: fix checkpatch errors with foo* bar|foo * bar
wangweidong [Fri, 14 Feb 2014 07:43:44 +0000 (15:43 +0800)]
appletalk: fix checkpatch errors with foo* bar|foo * bar

fix checkpatch errors below:
ERROR: "foo* bar" should be "foo *bar"
ERROR: "foo * bar" should be "foo *bar"

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoappletalk: fix checkpatch errors with space required or prohibited
wangweidong [Fri, 14 Feb 2014 07:43:43 +0000 (15:43 +0800)]
appletalk: fix checkpatch errors with space required or prohibited

fix checkpatch errors while the space is required or prohibited

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: add pacing_rate information into tcp_info
Eric Dumazet [Thu, 13 Feb 2014 22:27:40 +0000 (14:27 -0800)]
tcp: add pacing_rate information into tcp_info

Add two new fields to struct tcp_info, to report sk_pacing_rate
and sk_max_pacing_rate to monitoring applications, as ss from iproute2.

User exported fields are 64bit, even if kernel is currently using 32bit
fields.

lpaa5:~# ss -i
..
 skmem:(r0,rb357120,t0,tb2097152,f1584,w1980880,o0,bl0) ts sack cubic
wscale:6,6 rto:400 rtt:0.875/0.75 mss:1448 cwnd:1 ssthresh:12 send
13.2Mbps pacing_rate 3336.2Mbps unacked:15 retrans:1/5448 lost:15
rcv_space:29200

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: introduce netdev_alloc_pcpu_stats() for drivers
WANG Cong [Thu, 13 Feb 2014 19:46:28 +0000 (11:46 -0800)]
net: introduce netdev_alloc_pcpu_stats() for drivers

There are many drivers calling alloc_percpu() to allocate pcpu stats
and then initializing ->syncp. So just introduce a helper function for them.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet-sysfs: get_netdev_queue_index() cleanup
Eric Dumazet [Thu, 13 Feb 2014 18:07:13 +0000 (10:07 -0800)]
net-sysfs: get_netdev_queue_index() cleanup

Remove one inline keyword, and no need for a loop to find
an index into a table.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'bcmgenet'
David S. Miller [Fri, 14 Feb 2014 05:28:30 +0000 (00:28 -0500)]
Merge branch 'bcmgenet'

Florian Fainelli says:

====================
Support for the Broadcom GENET driver

This patchset adds support for the Broadcom GENET Gigabit Ethernet MAC
controller. This controller is found on the Broadcom BCM7xxx Set Top Box
System-on-a-chips.

Changes since v4:
- add dependency on CONFIG_OF

Changes since v3:
- fixed Kconfig dependency on FIXED_PHY

Changes since v2:
- dropped the patch that adds an "internal" phy-mode
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMAINTAINERS: add entry for the Broadcom GENET driver
Florian Fainelli [Fri, 14 Feb 2014 00:08:51 +0000 (16:08 -0800)]
MAINTAINERS: add entry for the Broadcom GENET driver

Add myself as a maintainer of the Broadcom GENET driver.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDocumentation: add Device tree bindings for Broadcom GENET
Florian Fainelli [Fri, 14 Feb 2014 00:08:50 +0000 (16:08 -0800)]
Documentation: add Device tree bindings for Broadcom GENET

This patch adds the Device Tree bindings for the Broadcom GENET Gigabit
Ethernet controller. A bunch of examples are provided to illustrate the
versatile aspect of the hardare.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: hook into the build system
Florian Fainelli [Fri, 14 Feb 2014 00:08:49 +0000 (16:08 -0800)]
net: bcmgenet: hook into the build system

This patch adds a new configuration symbol: CONFIG_BCMGENET which allows
us to build the Broadcom GENET driver and hook the driver files into the
build system.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: add MDIO routines
Florian Fainelli [Fri, 14 Feb 2014 00:08:48 +0000 (16:08 -0800)]
net: bcmgenet: add MDIO routines

This patch adds support for configuring the port multiplexer hardware
which resides in front of the GENET Ethernet MAC controller. This allows
us to support:

- internal PHYs (using drivers/net/phy/bcm7xxx.c)
- MoCA PHYs which are an entirely separate hardware block not covered
  here
- external PHYs and switches

Note that MoCA and switches are currently supported using the emulated
"fixed PHY" driver.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: add main driver file
Florian Fainelli [Fri, 14 Feb 2014 00:08:47 +0000 (16:08 -0800)]
net: bcmgenet: add main driver file

This patch adds the BCMGENET main driver file which supports the
following:

- GENET hardware from V1 to V4
- support for reading the UniMAC MIB counters statistics
- support for the 5 transmit queues
- support for RX/TX checksum offload and SG

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: bcmgenet: add driver definitions and private structure
Florian Fainelli [Fri, 14 Feb 2014 00:08:46 +0000 (16:08 -0800)]
net: bcmgenet: add driver definitions and private structure

This patchs adds the bcmgenet.h header file which contains all the
hardware definitions for the GENETv1 to v4 hardware blocks as well as
the driver private structure and MIB counters.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: add Broadcom BCM7xxx internal PHY driver
Florian Fainelli [Fri, 14 Feb 2014 00:08:45 +0000 (16:08 -0800)]
net: phy: add Broadcom BCM7xxx internal PHY driver

This patch adds support for the Broadcom BCM7xxx Set Top Box SoCs
internal PHYs. This driver supports the following generation of SoCs:

- BCM7366, BCM7439, BCM7445 (28nm process)
- all 40nm and 65nm (older MIPS-based SoCs)

The PHYs on these SoCs require a bunch of workarounds to operate
correctly, both during configuration time and at suspend/resume time,
the driver handles that for us.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: broadcom: extract register definitions
Florian Fainelli [Fri, 14 Feb 2014 00:08:44 +0000 (16:08 -0800)]
net: phy: broadcom: extract register definitions

The Broadcom BCM54xx register definitions are shared between BCM54xx and
BCM7xx internal PHYs for which we are adding support. Extract these
register definitions and put them in include/linux/brcmphy.h for use by
the BCM7xxx internal PHY driver.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: update port type for MoCA PHYs
Florian Fainelli [Fri, 14 Feb 2014 00:08:43 +0000 (16:08 -0800)]
net: phy: update port type for MoCA PHYs

MoCA PHYs are using coaxial (BNC-like) connectors, update the
transceiver port type when replying to ethtool.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: phy: add MoCA PHY type
Florian Fainelli [Fri, 14 Feb 2014 00:08:42 +0000 (16:08 -0800)]
net: phy: add MoCA PHY type

Some Ethernet MACs are connected to a MoCA PHY which will handle the
low-level job of sending Ethernet frames on the coaxial cable, these
Ethernet MACs need to know about it to be properly configured.
Add a new PHY mode "moca" and update the Device Tree parsing logic to
look for it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosch_netem: replace magic numbers with enumerate in GE model
Yang Yingliang [Fri, 14 Feb 2014 02:30:43 +0000 (10:30 +0800)]
sch_netem: replace magic numbers with enumerate in GE model

Replace some magic numbers which describe states of GE model
loss generator with enumerate.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosch_netem: change some func's param from "struct Qdisc *" to "struct netem_sched_data *"
Yang Yingliang [Fri, 14 Feb 2014 02:30:42 +0000 (10:30 +0800)]
sch_netem: change some func's param from "struct Qdisc *" to "struct netem_sched_data *"

In netem_change(), we have already get "struct netem_sched_data *q".
Replace params of get_correlation() and other similar functions with
"struct netem_sched_data *q".

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosch_netem: return errcode before setting params
Yang Yingliang [Fri, 14 Feb 2014 02:30:41 +0000 (10:30 +0800)]
sch_netem: return errcode before setting params

get_dist_table() and get_loss_clg() may be failed. These
two functions should be called after setting the members
of qdisc_priv(sch), or it will break the old settings while
either of them is failed.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv4: ip_forward: perform skb->pkt_type check at the beginning
Denis Kirjanov [Thu, 13 Feb 2014 04:58:56 +0000 (08:58 +0400)]
ipv4: ip_forward: perform skb->pkt_type check at the beginning

Packets which have L2 address different from ours should be
already filtered before entering into ip_forward().

Perform that check at the beginning to avoid processing such packets.

Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: remove unnecessary return's
stephen hemminger [Thu, 13 Feb 2014 04:51:22 +0000 (20:51 -0800)]
net: remove unnecessary return's

One of my pet coding style peeves is the practice of
adding extra return; at the end of function.
Kill several instances of this in network code.

I suppose some coccinelle wizardy could do this automatically.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotcp: remove unused min_cwnd member of tcp_congestion_ops
Stanislav Fomichev [Wed, 12 Feb 2014 13:35:21 +0000 (17:35 +0400)]
tcp: remove unused min_cwnd member of tcp_congestion_ops

Commit 684bad110757 "tcp: use PRR to reduce cwin in CWR state" removed all
calls to min_cwnd, so we can safely remove it.
Also, remove tcp_reno_min_cwnd because it was only used for min_cwnd.

Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: refactor multi-channel config code for Skyhawk-R chip
Vasundhara Volam [Wed, 12 Feb 2014 10:39:25 +0000 (16:09 +0530)]
be2net: refactor multi-channel config code for Skyhawk-R chip

Currently multi-channel configuration is read via the QUERY_FW_CONFIG cmd.
This method has been deprecated by the Skyhawk-R FW. Instead,
GET_PROFILE_CONFIG::port-desc must be used to query this configuration.

This patch also:
a) introduces a few macros to identify certain categories of multi-channel
configs
2) re-factors the be_cmd_set_profile_config() code to be able to read any kind
of desc (and not just the nic-desc.)

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Update copyright year
Vasundhara Volam [Wed, 12 Feb 2014 10:39:07 +0000 (16:09 +0530)]
be2net: Update copyright year

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobe2net: Log a kernel message when UE is detected in BE & Skyhawk
Somnath Kotur [Wed, 12 Feb 2014 10:37:54 +0000 (16:07 +0530)]
be2net: Log a kernel message when UE is detected in BE & Skyhawk

This patch logs a kernel message when a HW error(SLIPORT_ERROR in Lancer and UE
in BEx/Skyhawk) is detected. The log message for BE3 was missing earlier.
This patch also refactors the code by segregating error-detection and reporting
code for Lancer and BEx/SH.

Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge tag 'linux-can-next-for-3.15-20140212' of git://gitorious.org/linux-can/linux...
David S. Miller [Thu, 13 Feb 2014 23:16:00 +0000 (18:16 -0500)]
Merge tag 'linux-can-next-for-3.15-20140212' of git://gitorious.org/linux-can/linux-can-next

linux-can-next-for-3.15-20140212

Marc Kleine-Budde says:

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

Florian Vaussard contributed a series that merged the sja1000 of_platform
into the platform driver. The of_platform driver is finally removed.
Stephane Grosjean supplied a patch to allocate CANFD skbs. In a patch
by Uwe Kleine-König another missing copyright information was added to
a userspace header. And a patch by Yoann DI RUZZA that adds listen only
mode to the at91_can driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosocket: replace some printk with pr_*
Yang Yingliang [Wed, 12 Feb 2014 09:09:55 +0000 (17:09 +0800)]
socket: replace some printk with pr_*

Prefer pr_*(...) to printk(KERN_* ...).

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosh_eth: use ETH_ZLEN instead of home-grown #define
Sergei Shtylyov [Fri, 14 Feb 2014 00:05:42 +0000 (03:05 +0300)]
sh_eth: use ETH_ZLEN instead of home-grown #define

The driver #define's and uses ETHERSMALL macro for the minimum Ethernet frame
size for which we have a standard macro ETH_ZLEN.  Use the latter  instead of
the home-grown one.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'tipc'
David S. Miller [Thu, 13 Feb 2014 22:57:11 +0000 (17:57 -0500)]
Merge branch 'tipc'

Jon Maloy says:

====================
tipc: clean up media and bearer layer

This commit series aims at facilitating future changes to the
locking policy around nodes, links and bearers.

Currently, we have a big read/write lock (net_lock) that is used for
serializing all changes to the node, link and bearer lists, as well
as to their mutual pointers and references.

But, in order to allow for concurrent access to the contents of these
structures, net_lock is only used in read mode by the data path code,
and hence a finer granular locking policy must be applied inside the
scope of net_lock: a spinlock (node_lock) for each node structure,
and another one (bearer_lock) for protection of bearer structures.

This locking policy has proved hard to maintain. We have several
times encountered contention problems between node_lock and
bearer_lock, and with the advent of the RCU locking mechanism we
feel it is anyway obsolete and ripe for improvements.

We now plan to replace net_lock with an RCU lock, as well as
getting rid of bearer_lock altogether. This will both reduce data
path overhead and make the code more manageable, while reducing the
risk of future lock contention problems.

Prior to these changes, we need to do some necessary cleanup and
code consolidation. This is what we do with this commit series,
before we finally remove bearer_lock. In a later series we will
replace net_lock with an RCU lock.

v2:
 - Re-inserted a removed kerneldoc entry in commit#5, based on
   feedback from D. Miller.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: add node_lock protection to link lookup function
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:18 +0000 (17:29 -0500)]
tipc: add node_lock protection to link lookup function

In an earlier commit, ("tipc: remove links list from bearer struct")
we described three issues that need to be pre-emptively resolved before
we can remove tipc_net_lock. Here we resolve issue a) described in that
commit:

"a) In access method #2, we access the link before taking the
    protecting node_lock. This will not work once net_lock is gone,
    so we will have to change the access order. We will deal with
    this in a later commit in this series."

Here, we change that access order, by ensuring that the function
link_find_link() returns only a safe reference for finding
the link, i.e., a node pointer and an index into its 'links' array,
not the link pointer itself. We also change all callers of this
function to first take the node lock before they can check if there
still is a valid link pointer at the returned index. Since the
function now returns a node pointer rather than a link pointer,
we rename it to the more appropriate 'tipc_link_find_owner().

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>
10 years agotipc: remove bearer_lock from tipc_bearer struct
Ying Xue [Thu, 13 Feb 2014 22:29:17 +0000 (17:29 -0500)]
tipc: remove bearer_lock from tipc_bearer struct

After the earlier commits ("tipc: remove 'links' list from
tipc_bearer struct") and ("tipc: introduce new spinlock to protect
struct link_req"), there is no longer any need to protect struct
link_req or or any link list by use of bearer_lock. Furthermore,
we have eliminated the need for using bearer_lock during downcalls
(send) from the link to the bearer, since we have ensured that
bearers always have a longer life cycle that their associated links,
and always contain valid data.

So, the only need now for a lock protecting bearers is for guaranteeing
consistency of the bearer list itself. For this, it is sufficient, at
least for the time being, to continue applying 'net_lock´ in write mode.

By removing bearer_lock we also pre-empt introduction of issue b) descibed
in the previous commit "tipc: remove 'links' list from tipc_bearer struct":

"b) When the outer protection from net_lock is gone, taking
    bearer_lock and node_lock in opposite order of method 1) and 2)
    will become an obvious deadlock hazard".

Therefore, we now eliminate the bearer_lock spinlock.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: delay delete of link when failover is needed
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:16 +0000 (17:29 -0500)]
tipc: delay delete of link when failover is needed

When a bearer is disabled, all its attached links are deleted.
Ideally, we should do link failover to redundant links on other bearers,
if there are any, in such cases. This would be consistent with current
behavior when a link is reset, but not deleted. However, due to the
complexity involved, and the (wrongly) perceived low demand for this
feature, it was never implemented until now.

We mark the doomed link for deletion with a new flag, but wait until the
failover process is finished before we actually delete it. With the
improved link tunnelling/failover code introduced earlier in this commit
series, it is now easy to identify a spot in the code where the failover
is finished and it is safe to delete the marked link. Moreover, the test
for the flag and the deletion can be done synchronously, and outside the
most time critical data path.

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>
10 years agotipc: changes to general packet reception algorithm
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:15 +0000 (17:29 -0500)]
tipc: changes to general packet reception algorithm

We change the order of checking for destination users when processing
incoming packets. By placing the checks for users that may potentially
replace the processed buffer, i.e., CHANGEOVER_PROTOCOL and
MSG_FRAGMENTER, in a separate step before we check for the true end
users, we get rid of a label and a 'goto', at the same time making the
code more comprehensible and easy to follow.

This commit does not change any functionality, it is just a cosmetic
code reshuffle.

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>
10 years agotipc: rename stack variables in function tipc_link_tunnel_rcv
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:14 +0000 (17:29 -0500)]
tipc: rename stack variables in function tipc_link_tunnel_rcv

After the previous redesign of the tunnel reception algorithm and
functions, we finalize it by renaming a couple of stack variables
in tipc_tunnel_rcv(). This makes it more consistent with the naming
scheme elsewhere in this part of the code.

This change is purely cosmetic, with no functional changes.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: more cleanup of tunnelling reception function
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:13 +0000 (17:29 -0500)]
tipc: more cleanup of tunnelling reception function

We simplify and slim down the code in function tipc_tunnel_rcv()
No impact on the users of this function.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: change signature of tunnelling reception function
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:12 +0000 (17:29 -0500)]
tipc: change signature of tunnelling reception function

After the earlier commits in this series related to the function
tipc_link_tunnel_rcv(), we can now go further and simplify its
signature.

The function now consumes all DUPLICATE packets, and only returns such
ORIGINAL packets that are ready for immediate delivery, i.e., no
more link level protocol processing needs to be done by the caller.
As a consequence, the the caller, tipc_rcv(), does not access the link
pointer after call return, and it becomes unnecessary to pass a link
pointer reference in the call. Instead, we now only pass it the tunnel
link's owner node, which is sufficient to find the destination link for
the tunnelled packet.

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>
10 years agotipc: change reception of tunnelled failover packets
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:11 +0000 (17:29 -0500)]
tipc: change reception of tunnelled failover packets

When a link is reset, and there is a redundant link available, all
sender sockets will steer their subsequent traffic through the
remaining link. In order to guarantee preserved packet order and
cardinality during the transition, we tunnel the failing link's send
queue through the remaining link before we allow any sockets to use it.

In this commit, we change the algorithm for receiving failover
("ORIGINAL_MSG") packets in tipc_link_tunnel_rcv(), at the same time
delegating it to a new subfuncton, tipc_link_failover_rcv(). Instead
of directly returning an extracted inner packet to the packet reception
loop in tipc_rcv(), we first check if it is a message fragment, in which
case we append it to the reset link's fragment chain. If the fragment
chain is complete, we return the whole chain instead of the individual
buffer, eliminating any need for the tipc_rcv() loop to do reassembly of
tunneled packets.

This change makes it possible to further simplify tipc_link_tunnel_rcv(),
as well as the calling tipc_rcv() loop. We will do that in later
commits. It also makes it possible to identify a single spot in the code
where we can tell that a failover procedure is finished, something that
is useful when we are deleting links after a failover. This will also
be done in a later 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>
10 years agotipc: change reception of tunnelled duplicate packets
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:10 +0000 (17:29 -0500)]
tipc: change reception of tunnelled duplicate packets

When a second link to a destination comes up, some sender sockets will
steer their subsequent traffic through the new link. In order to
guarantee preserved packet order and cardinality for those sockets, we
tunnel a duplicate of the old link's send queue through the new link
before we open it for regular traffic. The last arriving packet copy,
on whichever link, will be dropped at the receiving end based on the
original sequence number, to ensure that only one copy is delivered to
the end receiver.

In this commit, we change the algorithm for receiving DUPLICATE_MSG
packets, at the same time delegating it to a new subfunction,
tipc_link_dup_rcv(). Instead of returning an extracted inner packet to
the packet reception loop in tipc_rcv(), we just add it to the receiving
(new) link's deferred packet queue. The packet will then be processed by
that link when it receives its first non-tunneled packet, i.e., at
latest when the changeover procedure is finished.

Because tipc_link_tunnel_rcv()/tipc_link_dup_rcv() now is consuming all
packets of type DUPLICATE_MSG, the calling tipc_rcv() function can omit
testing for this. This in turn means that the current conditional jump
to the label 'protocol_check' becomes redundant, and we can remove that
label.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: remove 'links' list from tipc_bearer struct
Ying Xue [Thu, 13 Feb 2014 22:29:09 +0000 (17:29 -0500)]
tipc: remove 'links' list from tipc_bearer struct

In our ongoing effort to simplify the TIPC locking structure,
we see a need to remove the linked list for tipc_links
in the bearer. This can be explained as follows.

Currently, we have three different ways to access a link,
via three different lists/tables:

1: Via a node hash table:
   Used by the time-critical outgoing/incoming data paths.
   (e.g. link_send_sections_fast() and tipc_recv_msg() ):

grab net_lock(read)
   find node from node hash table
   grab node_lock
       select link
       grab bearer_lock
          send_msg()
       release bearer_lock
   release node lock
release net_lock

2: Via a global linked list for nodes:
   Used by configuration commands (link_cmd_set_value())

grab net_lock(read)
   find node and link from global node list (using link name)
   grab node_lock
       update link
   release node lock
release net_lock

(Same locking order as above. No problem.)

3: Via the bearer's linked link list:
   Used by notifications from interface (e.g. tipc_disable_bearer() )

grab net_lock(write)
   grab bearer_lock
      get link ptr from bearer's link list
      get node from link
      grab node_lock
         delete link
      release node lock
   release bearer_lock
release net_lock

(Different order from above, but works because we grab the
outer net_lock in write mode first, excluding all other access.)

The first major goal in our simplification effort is to get rid
of the "big" net_lock, replacing it with rcu-locks when accessing
the node list and node hash array. This will come in a later patch
series.

But to get there we first need to rewrite access methods ##2 and 3,
since removal of net_lock would introduce three major problems:

a) In access method #2, we access the link before taking the
   protecting node_lock. This will not work once net_lock is gone,
   so we will have to change the access order. We will deal with
   this in a later commit in this series, "tipc: add node lock
   protection to link found by link_find_link()".

b) When the outer protection from net_lock is gone, taking
   bearer_lock and node_lock in opposite order of method 1) and 2)
   will become an obvious deadlock hazard. This is fixed in the
   commit ("tipc: remove bearer_lock from tipc_bearer struct")
   later in this series.

c) Similar to what is described in problem a), access method #3
   starts with using a link pointer that is unprotected by node_lock,
   in order to via that pointer find the correct node struct and
   lock it. Before we remove net_lock, this access order must be
   altered. This is what we do with this commit.

We can avoid introducing problem problem c) by even here using the
global node list to find the node, before accessing its links. When
we loop though the node list we use the own bearer identity as search
criteria, thus easily finding the links that are associated to the
resetting/disabling bearer. It should be noted that although this
method is somewhat slower than the current list traversal, it is in
no way time critical. This is only about resetting or deleting links,
something that must be considered relatively infrequent events.

As a bonus, we can get rid of the mutual pointers between links and
bearers. After this commit, pointer dependency go in one direction
only: from the link to the bearer.

This commit pre-empts introduction of problem c) as described above.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: redefine 'started' flag in struct link to bitmap
Ying Xue [Thu, 13 Feb 2014 22:29:08 +0000 (17:29 -0500)]
tipc: redefine 'started' flag in struct link to bitmap

Currently, the 'started' field in struct tipc_link represents only a
binary state, 'started' or 'not started'. We need it to represent
more link execution states in the coming commits in this series.
Hence, we rename the field to 'flags', and define the current
started/non-started state to be represented by the LSB bit of
that field.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: move code for deleting links from bearer.c to link.c
Ying Xue [Thu, 13 Feb 2014 22:29:07 +0000 (17:29 -0500)]
tipc: move code for deleting links from bearer.c to link.c

We break out the code for deleting attached links in the
function bearer_disable(), and define a new function named
tipc_link_delete_list() to do this job.

This commit incurs no functional changes, but makes the code of
function bearer_disable() cleaner. It is also a preparation
for a more important change to the bearer code, in a subsequent
commit in this series.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: move code for resetting links from bearer.c to link.c
Ying Xue [Thu, 13 Feb 2014 22:29:06 +0000 (17:29 -0500)]
tipc: move code for resetting links from bearer.c to link.c

We break out the code for resetting attached links in the
function tipc_reset_bearer(), and define a new function named
tipc_link_reset_list() to do this job.

This commit incurs no functional changes, but makes the code
of function tipc_reset_bearer() cleaner. It is also a preparation
for a more important change to the bearer code, in a subsequent
commit in this series.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotipc: stricter behavior of message reassembly function
Jon Paul Maloy [Thu, 13 Feb 2014 22:29:05 +0000 (17:29 -0500)]
tipc: stricter behavior of message reassembly function

The function tipc_link_recv_fragment(struct sk_buff **buf) currently
leaves the value of the input buffer pointer undefined when it returns,
except when the return code indicates that the reassembly is complete.
This despite the fact that it always consumes the input buffer.

Here, we enforce a stricter behavior by this function, ensuring that
the returned buffer pointer is non-NULL if and only if the reassembly
is complete. This makes it possible to test for the buffer pointer as
criteria for successful reassembly.

We also rename the function to tipc_link_frag_rcv(), which is both
shorter and more in line with common naming practice in the network
subsystem.

Apart from the new name, these changes have no impact on current
users of the function, but makes it more practical for use in some
planned future commits.

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>
10 years agotipc: explicitly include core.h in addr.h
Andreas Bofjäll [Wed, 12 Feb 2014 08:34:18 +0000 (09:34 +0100)]
tipc: explicitly include core.h in addr.h

The inline functions in addr.h uses tipc_own_addr which is exported by
core.h, but addr.h never actually includes it. It works because it is
explicitly included where this is used, but it looks a bit strange.

Include core.h in addr.h explicitly to make the dependency clearer.

Signed-off-by: Andreas Bofjäll <andreas.bofjall@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: remove the redundant judgements for bond_option_queue_id_set()
dingtianhong [Wed, 12 Feb 2014 06:58:50 +0000 (14:58 +0800)]
bonding: remove the redundant judgements for bond_option_queue_id_set()

The dev_valid_name() will check the buffer length for input name, no need to
check it twice.

Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: remove the redundant judgements for bond_set_mac_address()
dingtianhong [Wed, 12 Feb 2014 06:58:49 +0000 (14:58 +0800)]
bonding: remove the redundant judgements for bond_set_mac_address()

The dev_set_mac_address() will check the dev->netdev_ops->ndo_set_mac_address,
so no need to check it in bond_set_mac_address().

Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: allow setting mac address of loopback device
WANG Cong [Wed, 12 Feb 2014 01:21:26 +0000 (17:21 -0800)]
net: allow setting mac address of loopback device

We are trying to mirror the local traffic from lo to eth0,
allowing setting mac address of lo to eth0 would make
the ether addresses in these packets correct, so that
we don't have to modify the ether header again.

Since usually no one cares about its mac address (all-zero),
it is safe to allow those who care to set its mac address.

Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'i40e'
David S. Miller [Thu, 13 Feb 2014 22:27:33 +0000 (17:27 -0500)]
Merge branch 'i40e'

Aaron Brown says:

====================
Intel Wired LAN Driver Updates

This series contains updates to i40e and i40evf, primarily reset
handling / refactoring along with a fair amount of minor cleanup.

Jesse fixes some spelling, bumps the version and other trivial fixes.
Akeem sets a bit that is needed before shutdown in the case of
tx_timeout recovery failure.  Mitch refactors reset handling along
with a whole bunch of clean up.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: refactor reset handling
Mitch Williams [Thu, 13 Feb 2014 11:48:53 +0000 (03:48 -0800)]
i40evf: refactor reset handling

Respond better to a VF reset event. When a reset is signaled by the
PF, or detected by the watchdog task, prevent the watchdog from
processing admin queue requests, and schedule the reset task.

In the reset task, wait first for the reset to start, then for it to
complete, then reinit the driver.

If the reset never appears to complete after a long, long time (>10
seconds is possible depending on what's going on with the PF driver),
then set a flag to indicate that PF communications have failed.

If this flag is set, check for the reset to complete in the watchdog,
and  attempt to do a full reinitialization of the driver from scratch.

With these changes the VF driver correctly handles a PF reset event
while running on bare metal, or in a VM.

Also update copyrights.

Change-ID: I93513efd0b50523a8345e7f6a33a5e4f8a2a5996
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: change type of flags variable
Mitch Williams [Thu, 13 Feb 2014 11:48:52 +0000 (03:48 -0800)]
i40evf: change type of flags variable

As pointed out by Dan Carpenter (from Oracle), the flags variable is
declared as a 64-bit long but all of the flags are defined as u32,
which may lead to unintended consequences. Fix this by declaring flags
as u32 (since we don't need any more than about a dozen flags right
now), and remove the volatile qualifier, since it's unnecessary and
just makes checkpatch cry.

Change-ID: I137d3bb1842bf7e9456b5929ca54e3b0ed45dcab
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: don't store unnecessary array of strings
Mitch Williams [Thu, 13 Feb 2014 11:48:51 +0000 (03:48 -0800)]
i40evf: don't store unnecessary array of strings

Since we store the traffic vector names in the queue vector struct, we
don't need to maintain an array of strings for these names in the
adapter structure. Replace this array with a single string and use it
when allocating the misc irq vector.

Also update copyrights.

Change-ID: I664f096c3c008210d6a04a487163e8aa934fee5b
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: fix bogus comment
Mitch Williams [Thu, 13 Feb 2014 11:48:50 +0000 (03:48 -0800)]
i40evf: fix bogus comment

Locate the structure in the correct header file.

Change-ID: Ic7853131728812093a44a75d6b70953311a48dab
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: clean up adapter struct
Mitch Williams [Thu, 13 Feb 2014 11:48:49 +0000 (03:48 -0800)]
i40evf: clean up adapter struct

Remove a bunch of unused structure members that are just wasting
space. Remove a completely unused info structure definition as well.

Also update copyrights.

Change-ID: I028ab92d9b7bd13a832cf3363bd1dc6610d8a535
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: don't handle VF reset on unload
Mitch Williams [Thu, 13 Feb 2014 11:48:48 +0000 (03:48 -0800)]
i40e: don't handle VF reset on unload

Set the DOWN flag before attempting to disable VFs when unloading the
driver. Also, don't attempt to reset the VFs when the driver is
unloading, because the switch configuration will fail. This fixes a
panic on unload when VFs are enabled.

Change-ID: I25a6567e89c9687145f510ff4f630932412c5c5d
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: enable extant VFs
Mitch Williams [Thu, 13 Feb 2014 11:48:47 +0000 (03:48 -0800)]
i40e: enable extant VFs

If VFs are present when the driver loads, then set up some resources
so they can function.

Change-ID: I485916a811609a9990ce663d06dc645f625b07ff
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: reset VFs after PF reset
Mitch Williams [Thu, 13 Feb 2014 11:48:46 +0000 (03:48 -0800)]
i40e: reset VFs after PF reset

Reset all of the VFs after a PF reset, so that they are in a known
state, and the VF driver can detect the reset and reinit itself.

Change-ID: I93c5b3a0f8b1371d0da078f92de948b9d3a6413f
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: set VF state to active when reset is complete
Mitch Williams [Thu, 13 Feb 2014 11:48:45 +0000 (03:48 -0800)]
i40e: set VF state to active when reset is complete

Without this, the VF can never communicate with the PF after a VF
reset.

Change-ID: I8d10f1d0d0638d50d39f0aff263422e05d83ad83
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: remove dead code
Mitch Williams [Thu, 13 Feb 2014 11:48:44 +0000 (03:48 -0800)]
i40e: remove dead code

This looks like a cut and paste error. The code makes no sense where
it is, and accomplishes nothing. Since we've removed the goto, we can
also get rid of the extraneous brackets.

Change-ID: I9315e3eafeee0a5713c94b0dc57b58b60a849124
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: Setting i40e_down bit for tx_timeout
Akeem G Abodunrin [Thu, 13 Feb 2014 11:48:43 +0000 (03:48 -0800)]
i40e: Setting i40e_down bit for tx_timeout

If tx_timeout recovery failed, then it becomes necessary to set
i40e_down bit before actually shutdown the connection.

Change-ID: Iaac81df0e302116571827aa0cff450697fbb7fa3
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: clean up memsets
Mitch Williams [Thu, 13 Feb 2014 11:48:42 +0000 (03:48 -0800)]
i40evf: clean up memsets

As politely pointed out by Dave Miller, calls to memset do not need a
void pointer cast. Additionally, it is preferred to use sizeof(*the
actual object) instead of sizeof(type).

Change-ID: Id6a02429b7040111531f3865ea03fbe619167cb3
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Kevin Scott <kevin.c.scott@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40evf: trivial fixes
Jesse Brandeburg [Thu, 13 Feb 2014 11:48:41 +0000 (03:48 -0800)]
i40evf: trivial fixes

This change moves one operator up to the previous line and deletes
the duplicate declaration of ETH_ALEN.

Also update copyrights.

Change-ID: I88de73093b584e0f3b29d481ccd83fc4b1a1afa5
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: bump driver version
Jesse Brandeburg [Thu, 13 Feb 2014 11:48:40 +0000 (03:48 -0800)]
i40e: bump driver version

Update the driver version to 0.3.31-k.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: spelling error
Jesse Brandeburg [Thu, 13 Feb 2014 11:48:39 +0000 (03:48 -0800)]
i40e: spelling error

Fix a spelling error, s/extention/extension/.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipx: implement shutdown()
Sabrina Dubroca [Sat, 8 Feb 2014 23:23:38 +0000 (00:23 +0100)]
ipx: implement shutdown()

IPX doesn't implement shutdown, which poses a problem to some users:

https://bugzilla.kernel.org/show_bug.cgi?id=67841

This patch is heavily based on the shutdown implementation for unix
sockets.

Reported-by: Bruno Jesus <00cpxxx@gmail.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'net_sched'
David S. Miller [Thu, 13 Feb 2014 00:23:53 +0000 (19:23 -0500)]
Merge branch 'net_sched'

Cong Wang says:

====================
net_sched: act: more cleanup and improvement

v2 -> v3:
* fix a mis-splitted patch
* keep hinfo as a pointer in ops

v1 -> v2:
* Fix a bug noticed by Jamal
* Drop patches already merged into net-next
* Add patch 5/5

Patches are cleanup's for the structures of tc actions, except patch 4
which is an improvement.

See each patch for details.
====================

Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet_sched: act: clean up tca_action_flush()
WANG Cong [Wed, 12 Feb 2014 01:07:35 +0000 (17:07 -0800)]
net_sched: act: clean up tca_action_flush()

We could allocate tc_action on stack in tca_action_flush(),
since it is not large.

Also, we could use create_a() in tcf_action_get_1().

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet_sched: act: refuse to remove bound action outside
WANG Cong [Wed, 12 Feb 2014 01:07:34 +0000 (17:07 -0800)]
net_sched: act: refuse to remove bound action outside

When an action is bonnd to a filter, there is no point to
remove it outside. Currently we just silently decrease the refcnt,
we should reject this explicitly with EPERM.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>