Граф коммитов

428249 Коммитов

Автор SHA1 Сообщение Дата
Alex Deucher b0447888dc MAINTAINERS: update drm git tree entry
Fix Dave's git tree.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-02-27 14:49:55 +10:00
Alex Deucher 566f59394d MAINTAINERS: add entry for drm radeon driver
Add an entry for radeon.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-02-27 14:49:34 +10:00
Jiri Bohac 09a89c219b bonding: disallow enslaving a bond to itself
Enslaving a bond to itself leads to an endless loop and hangs the kernel.

Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Tested-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 22:37:12 -05:00
Wang Nan 7b8853419d tools/liblockdep: Use realpath for srctree and objtree
If BUILD_SRC or CURDIR contains tailing '/', the file names passed to gcc will
contain '//'. It will be contained .o's in debuginfo, then confuse debugedit:

https://bugzilla.redhat.com/show_bug.cgi?id=304121

This patch uses realpath command to makesure potential tailing '/'s are removed.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Geng Hui <hui.geng@huawei.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2014-02-26 21:22:01 -05:00
Sasha Levin 9e3513b7af tools/liblockdep: Add a stub for new rcu_is_watching
Stub out rcu_is_watching(), prevents build error with the updated
tree.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2014-02-26 21:22:00 -05:00
Sasha Levin 1ddc1ffa2f tools/liblockdep: Mark runtests.sh as executable
runtests.sh is used to run the sanity tests for liblockdep
and should be set +x.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2014-02-26 21:21:59 -05:00
Ira W. Snyder aef5976fc5 tools/liblockdep: Add include directory to allow tests to compile
All of the programs in the tests directory require the
liblockdep/mutex.h header in order to compile. Add the include directory
to the compiler options so that the tests can be built with the provided
Makefile.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2014-02-26 21:21:56 -05:00
Ira W. Snyder 75759827bb tools/liblockdep: Fix include of asm/hash.h
Commit 71ae8aac ("lib: introduce arch optimized hash library")
added an include to <linux/hash.h> for setting up an architecture
specific fast hash.

This patch mirrors the fix used for perf, titled "tools: perf: util: fix
include for non x86 architectures".

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2014-02-26 21:21:53 -05:00
Ira W. Snyder 367d896daf tools/liblockdep: Fix initialization code path
This makes initialization actually happen. Without it, initialization is
always skipped due to an incorrect conditional statement.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
2014-02-26 21:21:49 -05:00
Masanari Iida f63fcc90a3 clk:at91: Fix memory leak in of_at91_clk_master_setup()
cppcheck detected following error
[clk-master.c:245]: (error) Memory leak: characteristics

The original code forgot to free characteristics when
irq_of_parse_and_map() failed.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by Boris BREZILLON <b.brezillon@overkiz.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-02-26 18:00:56 -08:00
Stanislaw Gruszka a1227f3c10 usb: ehci: fix deadlock when threadirqs option is used
ehci_irq() and ehci_hrtimer_func() can deadlock on ehci->lock when
threadirqs option is used. To prevent the deadlock use
spin_lock_irqsave() in ehci_irq().

This change can be reverted when hrtimer callbacks become threaded.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-26 15:46:42 -08:00
Joerg Dorchain 6dbd46c849 USB: ftdi_sio: add Cressi Leonardo PID
Hello,

the following patch adds an entry for the PID of a Cressi Leonardo
diving computer interface to kernel 3.13.0.
It is detected as FT232RL.
Works with subsurface.

Signed-off-by: Joerg Dorchain <joerg@dorchain.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-26 15:46:42 -08:00
Lan Tianyu f3ca416452 ACPI / processor: Rework processor throttling with work_on_cpu()
acpi_processor_set_throttling() uses set_cpus_allowed_ptr() to make
sure that the (struct acpi_processor)->acpi_processor_set_throttling()
callback will run on the right CPU.  However, the function may be
called from a worker thread already bound to a different CPU in which
case that won't work.

Make acpi_processor_set_throttling() use work_on_cpu() as appropriate
instead of abusing set_cpus_allowed_ptr().

Reported-and-tested-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: All applicable <stable@vger.kernel.org>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-02-27 00:21:05 +01:00
Nikolay Aleksandrov ee6154e11e bonding: fix a div error caused by the slave release path
There's a bug in the slave release function which leads the transmit
functions which use the bond->slave_cnt to a div by 0 because we might
just have released our last slave and made slave_cnt == 0 but at the same
time we may have a transmitter after the check for an empty list which will
fetch it and use it in the slave id calculation.
Fix it by moving the slave_cnt after synchronize_rcu so if this was our
last slave any new transmitters will see an empty slave list which is
checked after rcu lock but before calling the mode transmit functions
which rely on bond->slave_cnt.

Fixes: 278b208375 ("bonding: initial RCU conversion")

CC: Veaceslav Falico <vfalico@redhat.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: David S. Miller <davem@davemloft.net>

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 17:09:09 -05:00
Eric Dumazet 740b0f1841 tcp: switch rtt estimations to usec resolution
Upcoming congestion controls for TCP require usec resolution for RTT
estimations. Millisecond resolution is simply not enough these days.

FQ/pacing in DC environments also require this change for finer control
and removal of bimodal behavior due to the current hack in
tcp_update_pacing_rate() for 'small rtt'

TCP_CONG_RTT_STAMP is no longer needed.

As Julian Anastasov pointed out, we need to keep user compatibility :
tcp_metrics used to export RTT and RTTVAR in msec resolution,
so we added RTT_US and RTTVAR_US. An iproute2 patch is needed
to use the new attributes if provided by the kernel.

In this example ss command displays a srtt of 32 usecs (10Gbit link)

lpk51:~# ./ss -i dst lpk52
Netid  State      Recv-Q Send-Q   Local Address:Port       Peer
Address:Port
tcp    ESTAB      0      1         10.246.11.51:42959
10.246.11.52:64614
         cubic wscale:6,6 rto:201 rtt:0.032/0.001 ato:40 mss:1448
cwnd:10 send
3620.0Mbps pacing_rate 7240.0Mbps unacked:1 rcv_rtt:993 rcv_space:29559

Updated iproute2 ip command displays :

lpk51:~# ./ip tcp_metrics | grep 10.246.11.52
10.246.11.52 age 561.914sec cwnd 10 rtt 274us rttvar 213us source
10.246.11.51

Old binary displays :

lpk51:~# ip tcp_metrics | grep 10.246.11.52
10.246.11.52 age 561.914sec cwnd 10 rtt 250us rttvar 125us source
10.246.11.51

With help from Julian Anastasov, Stephen Hemminger and Yuchung Cheng

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Larry Brakmo <brakmo@google.com>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 17:08:40 -05:00
Eric Dumazet 363ec39235 net: add skb_mstamp infrastructure
ktime_get() is too expensive on some cases, and we'd like to get
usec resolution timestamps in TCP stack.

This patch adds a light weight facility using a combination of
local_clock() and jiffies samples.

Instead of :

        u64 t0, t1;

        t0 = ktime_get();
        // stuff
        t1 = ktime_get();
        delta_us = ktime_us_delta(t1, t0);

use :
        struct skb_mstamp t0, t1;

        skb_mstamp_get(&t0);
        // stuff
        skb_mstamp_get(&t1);
        delta_us = skb_mstamp_us_delta(&t1, &t0);

Note : local_clock() might have a (bounded) drift between cpus.

Do not use this infra in place of ktime_get() without understanding the
issues.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Larry Brakmo <brakmo@google.com>
Cc: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 17:08:39 -05:00
Freddy Xin e5fe0cd442 AX88179_178A: Add VID:DID for Lenovo OneLinkDock Gigabit LAN
Add VID:DID for Lenovo OneLinkDock Gigabit LAN

Signed-off-by: Freddy Xin <freddy@asix.com.tw>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 17:01:56 -05:00
Ben Dooks 20d8435a1c phy: micrel: add of configuration for LED mode
Add support for the led-mode property for the following PHYs
which have a single LED mode configuration value.

KSZ8001 and KSZ8041 which both use register 0x1e bits 15,14 and
KSZ8021, KSZ8031 and KSZ8051 which use register 0x1f bits 5,4
to control the LED configuration.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 17:00:07 -05:00
Arnd Bergmann 94fcf6964c isdn: fix multiple sleep_on races
The isdn core code uses a couple of wait queues with
interruptible_sleep_on, which is racy and about to get
removed from the kernel. Fortunately, we know for each case
what we are waiting for, so they can all be converted to
the better wait_event_interruptible interface.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:06:13 -05:00
Arnd Bergmann c11da83bda isdn: divert, hysdn: fix interruptible_sleep_on race
These two drivers use identical code for their procfs status
file handling, which contains a small race against status
data becoming available while reading the file.

This uses wait_event_interruptible instead to fix this
particular race and eventually get rid of all sleep_on
instances. There seems to be another race involving
multiple concurrent readers of the same procfs file, which
I don't try to fix here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:06:13 -05:00
Arnd Bergmann c728cc88ce isdn: hisax/elsa: fix sleep_on race in elsa FSM
The state machine code in the elsa driver uses interruptible_sleep_on
to wait for state changes, which is racy. A closer look at the possible
states reveals that it is always used to wait for getting back into
ARCOFI_NOP, so we can use wait_event_interruptible instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:06:13 -05:00
Arnd Bergmann e5b3fa1547 isdn: pcbit: fix interruptible_sleep_on race
interruptible_sleep_on is racy and going away. In case of pcbit,
the driver would run into a timeout if the card is initialized
before we start waiting for it. This uses wait_event to fix the
race. In order to do this, the state machine handling for the
timeout case has to get trivially reorganized so we actually know
whether the timeout has occorred or not.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:06:12 -05:00
Arnd Bergmann c73b1f6a04 atm: firestream: fix interruptible_sleep_on race
interruptible_sleep_on is racy and going away. This replaces the one use
in the firestream driver with the appropriate wait_event_interruptible
variant.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chas Williams <chas@cmf.nrl.navy.mil>
Cc: linux-atm-general@lists.sourceforge.net
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:06:12 -05:00
David S. Miller 5d6dd5bf1b Merge branch 'bonding_rtnl'
Ding Tianhong says:

====================
Fix RTNL: assertion failed at net/core/rtnetlink.c

The commit 1d3ee88ae0
(bonding: add netlink attributes to slave link dev)
make the bond_set_active_slave() and bond_set_backup_slave()
use rtmsg_ifinfo to send slave's states and this functions
should be called in RTNL.

But the 902.3ad and ARP monitor did not hold the RTNL when calling
thses two functions, so fix them.

v1->v2: Add new micro to indicate that the notification should be send
        later, not never.
        And add a new patch to fix the same problem for ARP mode.

v2->v3: modify the bond_should_notify to should_notify_rtnl, it is more
	reasonable, and	use bool for should_notify_rtnl.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:03:06 -05:00
dingtianhong b0929915e0 bonding: Fix RTNL: assertion failed at net/core/rtnetlink.c for ab arp monitor
Veaceslav has reported and fix this problem by commit f2ebd477f1
(bonding: restructure locking of bond_ab_arp_probe()). According Jay's
opinion, the current solution is not very well, because the notification
is to indicate that the interface has actually changed state in a meaningful
way, but these calls in the ab ARP monitor are internal settings of the flags
to allow the ARP monitor to search for a slave to become active when there are
no active slaves. The flag setting to active or backup is to permit the ARP
monitor's response logic to do the right thing when deciding if the test
slave (current_arp_slave) is up or not.

So the best way to fix the problem is that we should not send a notification
when the slave is in testing state, and check the state at the end of the
monitor, if the slave's state recover, avoid to send pointless notification
twice. And RTNL is really a big lock, hold it regardless the slave's state
changed or not when the current_active_slave is null will loss performance
(every 100ms), so we should hold it only when the slave's state changed and
need to notify.

I revert the old commit and add new modifications.

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:02:56 -05:00
dingtianhong 5e5b066535 bonding: Fix RTNL: assertion failed at net/core/rtnetlink.c for 802.3ad mode
The problem was introduced by the commit 1d3ee88ae0
(bonding: add netlink attributes to slave link dev).
The bond_set_active_slave() and bond_set_backup_slave()
will use rtmsg_ifinfo to send slave's states, so these
two functions should be called in RTNL.

In 802.3ad mode, acquiring RTNL for the __enable_port and
__disable_port cases is difficult, as those calls generally
already hold the state machine lock, and cannot unconditionally
call rtnl_lock because either they already hold RTNL (for calls
via bond_3ad_unbind_slave) or due to the potential for deadlock
with bond_3ad_adapter_speed_changed, bond_3ad_adapter_duplex_changed,
bond_3ad_link_change, or bond_3ad_update_lacp_rate.  All four of
those are called with RTNL held, and acquire the state machine lock
second.  The calling contexts for __enable_port and __disable_port
already hold the state machine lock, and may or may not need RTNL.

According to the Jay's opinion, I don't think it is a problem that
the slave don't send notify message synchronously when the status
changed, normally the state machine is running every 100 ms, send
the notify message at the end of the state machine if the slave's
state changed should be better.

I fix the problem through these steps:

1). add a new function bond_set_slave_state() which could change
    the slave's state and call rtmsg_ifinfo() according to the input
    parameters called notify.

2). Add a new slave parameter which called should_notify, if the slave's state
    changed and don't notify yet, the parameter will be set to 1, and then if
    the slave's state changed again, the param will be set to 0, it indicate that
    the slave's state has been restored, no need to notify any one.

3). the __enable_port and __disable_port should not call rtmsg_ifinfo
    in the state machine lock, any change in the state of slave could
    set a flag in the slave, it will indicated that an rtmsg_ifinfo
    should be called at the end of the state machine.

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 16:02:56 -05:00
David S. Miller 53e0b080bc Merge branch 'intel-next'
Aaron Brown says:

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

This series contains updates to ixgbe, igb and documentation.  The
first four have been sent up as part of other series where 1 or more
in the series were rejected and either dropped or still being worked
on for reasons unrelated to these patches.

Don makes recovery from a HW ECC error just schedule a reset as it turns
out the previous behaviour of forcing the user to reload is not necessary.
Mark adds WoL support to port 0 of a new device.  Jacob removes a magic
number from the ptp_caps.name and updates the SubmittingPatches
documentation with details on the Fixed: tag.  And Carolyn updates igb
files to remove the FSF physical mail address.

[ DaveM Note: SubmittingPatches change omitted, will go via LKML ]
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:55:53 -05:00
Carolyn Wyborny 74cfb2e1f2 igb: Update license text to remove FSF address and update copyright.
This patch updates the license text to remove address of Free Software
Foundation and refer  users to www.gnu.org instead. This patch also updates
the copyright dates in appropriate igb driver files.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:54:52 -05:00
Jeff Kirsher 167f3f71c7 igb: make local functions static and remove dead code
Based on Stephen Hemminger's original patch.
Make local functions static, and remove unused functions.

Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:54:52 -05:00
Mark Rustad 87557440d8 ixgbe: Add WoL support for a new device
Add WoL support for port 0 of a new 82599-based device.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:54:52 -05:00
Jacob Keller ca324099fb ixgbe: don't use magic size number to assign ptp_caps.name
Rather than using a magic size number, just use sizeof since that will
work and is more robust to future changes.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:54:51 -05:00
Don Skidmore d773ce2de1 ixgbe: modify behavior on receiving a HW ECC error.
Currently when we noticed a HW ECC error we would request the use reload
the driver to force a reset of the part.  This was done due to the mistaken
believe that a normal reset would not be sufficient.  Well it turns out it
would be so now we just schedule a reset upon seeing the ECC.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:54:51 -05:00
Hannes Frederic Sowa 0b95227a7b ipv6: yet another new IPV6_MTU_DISCOVER option IPV6_PMTUDISC_OMIT
This option has the same semantic as IP_PMTUDISC_OMIT for IPv4 which
got recently introduced. It doesn't honor the path mtu discovered by the
host but in contrary to IPV6_PMTUDISC_INTERFACE allows the generation of
fragments if the packet size exceeds the MTU of the outgoing interface
MTU.

Fixes: 93b36cf342 ("ipv6: support IPV6_PMTU_INTERFACE on sockets")
Cc: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:51:01 -05:00
Hannes Frederic Sowa 1b34657635 ipv4: yet another new IP_MTU_DISCOVER option IP_PMTUDISC_OMIT
IP_PMTUDISC_INTERFACE has a design error: because it does not allow the
generation of fragments if the interface mtu is exceeded, it is very
hard to make use of this option in already deployed name server software
for which I introduced this option.

This patch adds yet another new IP_MTU_DISCOVER option to not honor any
path mtu information and not accepting new icmp notifications destined for
the socket this option is enabled on. But we allow outgoing fragmentation
in case the packet size exceeds the outgoing interface mtu.

As such this new option can be used as a drop-in replacement for
IP_PMTUDISC_DONT, which is currently in use by most name server software
making the adoption of this option very smooth and easy.

The original advantage of IP_PMTUDISC_INTERFACE is still maintained:
ignoring incoming path MTU updates and not honoring discovered path MTUs
in the output path.

Fixes: 482fc6094a ("ipv4: introduce new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE")
Cc: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:51:00 -05:00
Hannes Frederic Sowa 69647ce46a ipv4: use ip_skb_dst_mtu to determine mtu in ip_fragment
ip_skb_dst_mtu mostly falls back to ip_dst_mtu_maybe_forward if no socket
is attached to the skb (in case of forwarding) or determines the mtu like
we do in ip_finish_output, which actually checks if we should branch to
ip_fragment. Thus use the same function to determine the mtu here, too.

This is important for the introduction of IP_PMTUDISC_OMIT, where we
want the packets getting cut in pieces of the size of the outgoing
interface mtu. IPv6 already does this correctly.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:51:00 -05:00
Joe Perches bc90d2918b MAINTAINERS: Intel nic drivers
Add a new F: line for the intel subdirectories.

This allows get_maintainers to avoid using git log
and cc'ing people that have submitted clean-up style
patches for all first level directories under
drivers/net/ethernet/intel/

This does not make e100.c maintained.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:48:36 -05:00
Timo Teräs a960ff81f0 neigh: probe application via netlink in NUD_PROBE
iproute2 arpd seems to expect this as there's code and comments
to handle netlink probes with NUD_PROBE set. It is used to flush
the arpd cached mappings.

opennhrp instead turns off unicast probes (so it can handle all
neighbour discovery). Without this change it will not see NUD_PROBE
probes and cannot reconfirm the mapping. Thus currently neigh entry
will just fail and can cause few packets dropped until broadcast
discovery is restarted.

Earlier discussion on the subject:
http://marc.info/?t=139305877100001&r=1&w=2

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:46:25 -05:00
Jean Sacren 44a6bd8656 ieee802154: fix new function declaration
The commit 8fad346f36 ("eee802154: add basic support for RF212 to
at86rf230 driver") introduced the new function is_rf212() with some
minor issues in declaration:

1) Fix the function type by changing it to bool as the function
   definition returns a boolean value. Additionally both callers of
   is_rf212() are expected to return a boolean value.

2) Fix the function specifier by deleting the inline keyword as the
   compiler takes care of that.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:46:25 -05:00
Bjørn Mork 84a3e72c3a ipv6: log src and dst along with "udp checksum is 0"
These info messages are rather pointless without any means to identify
the source of the bogus packets.  Logging the src and dst addresses and
ports may help a bit.

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:46:25 -05:00
Pablo Neira Ayuso 86c3f0f830 vxlan: remove unused port variable in vxlan_udp_encap_recv()
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:46:25 -05:00
David S. Miller 941ee45c4c Merge branch 'mlx4'
Amir Vadai says:

====================
net, net/mlx4: Add sysfs file for port number

Modern distro's are using biosdevname to rename interface to a name based on
slot/port number.
biosdevname can't get the port number of devices that have multiple ports that
share the same PCI function.
This patch adds a sysfs file under: /sys/devices/.../net/<interface>/dev_port,
that contains the port number (0 based) - to be used by biosdevname.
Also, dev_id was wrongly used in mlx4_en driver - added a patch that fix it.

This patch was tested and applied over commit 51adfcc "net: bcmgenet: remove
unused bh_lock member"
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:38:18 -05:00
Amir Vadai ca9f9f7039 net/mlx4_en: Fix bad use of dev_id
dev_id should be set for multiple netdev's sharing the same MAC, which
is not the case here.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:38:07 -05:00
Amir Vadai 76a066f2a2 net/mlx4_en: Expose port number through sysfs
Initialize dev_port with port number (0 based) to be accessed through
sysfs from user space.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:38:06 -05:00
Amir Vadai 3f85944fe2 net: Add sysfs file for port number
Add a sysfs file to enable user space to query the device
port number used by a netdevice instance. This is needed for
devices that have multiple ports on the same PCI function.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:38:06 -05:00
David S. Miller f2ea0cfd6b Merge branch 'bnx2x'
Michal Schmidt says:

====================
bnx2x: minimize RAM usage in kdump

kdump kernels usually have only a small amount of memory reserved.
bnx2x can be memory-hungry. Let's minimize its memory usage when
running in kdump.

I detect kdump by looking at the "reset_devices" flag. A couple of
storage drivers (cciss, hpsa) use it for the same purpose. I am not sure
this is the best way to solve the problem, but it works.

Should it be made more generic by, say, looking at the total amount
of lowmem instead? Not using TPA by default when lowmem is small and/or
defaulting to fewer queues would help 32bit systems where a driver for
a multi-function multi-queue NIC can consume a significant amount
of available memory. Or do we want no such heuristics?

Is this something to consider doing for other network drivers too?
====================

Acked-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:28:08 -05:00
Michal Schmidt 94d9de3cf7 bnx2x: save RAM in kdump kernel by disabling TPA
When running in a kdump kernel, disable TPA. This saves memory, which
tends to be scarce in kdump.

TPA, being a receive acceleration, is unlikely to be useful for kdump,
whose purpose is to send the memory image out.

This saves additional 5 MB in the kdump environment.

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:27:50 -05:00
Michal Schmidt ff2ad3071f bnx2x: save RAM in kdump kernel by using a single queue
When running in a kdump kernel, make sure to use only a single ethernet
queue even if a num_queues option in /etc/modprobe.d/*.conf would specify
otherwise. This saves memory, which tends to be scarce in kdump.

This saves about 40 MB in the kdump environment on a setup with
num_queues=8 in the config file.

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:27:50 -05:00
Michal Schmidt 7d0445d66a bnx2x: clamp num_queues to prevent passing a negative value
Use the clamp() macro to make the calculation of the number of queues
slightly easier to understand. It also avoids a crash when someone
accidentally passes a negative value in num_queues= module parameter.

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:27:50 -05:00
Florian Westphal 8e165e2034 net: tcp: add mib counters to track zero window transitions
Three counters are added:
- one to track when we went from non-zero to zero window
- one to track the reverse
- one counter incremented when we want to announce zero window,
  but can't because we would shrink current window.

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:23:30 -05:00
Edward Cree 8f355e5cee sfc: check for NULL efx->ptp_data in efx_ptp_event
If we receive a PTP event from the NIC when we haven't set up PTP state
in the driver, we attempt to read through a NULL pointer efx->ptp_data,
triggering a panic.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-26 15:22:02 -05:00