10 years agonet-2.6 [Bug-Fix][dccp]: fix oops caused after failed initialisation
Gerrit Renker [Sun, 14 Mar 2010 20:13:19 +0000]
net-2.6 [Bug-Fix][dccp]: fix oops caused after failed initialisation

dccp: fix panic caused by failed initialisation

This fixes a kernel panic reported thanks to Andre Noll:

if DCCP is compiled into the kernel and any out of the initialisation
steps in net/dccp/proto.c:dccp_init() fail, a subsequent attempt to create
a SOCK_DCCP socket will panic, since inet{,6}_create() are not prevented
from creating DCCP sockets.

This patch fixes the problem by propagating a failure in dccp_init() to
dccp_v{4,6}_init_net(), and from there to dccp_v{4,6}_init(), so that the
DCCP protocol is not made available if its initialisation fails.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agomyri: remove dead code
Dan Carpenter [Sun, 14 Mar 2010 22:24:08 +0000]
myri: remove dead code

We can never reach the return statement.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agogigaset: prune use of tty_buffer_request_room
Tilman Schmidt [Sun, 14 Mar 2010 12:58:05 +0000]
gigaset: prune use of tty_buffer_request_room

Calling tty_buffer_request_room() before tty_insert_flip_string()
is unnecessary, costs CPU and for big buffers can mess up the
multi-page allocation avoidance.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Acked-by: Karsten Keil <keil@b1-systems.de>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>, stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agogigaset: correct clearing of at_state strings on RING
Tilman Schmidt [Sun, 14 Mar 2010 12:58:05 +0000]
gigaset: correct clearing of at_state strings on RING

In RING handling, clear the table of received parameter strings in
a loop like everywhere else, instead of by enumeration which had
already gotten out of sync.

Impact: minor bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Acked-by: Karsten Keil <keil@b1-systems.de>
CC: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agogigaset: avoid registering CAPI driver more than once
Tilman Schmidt [Sun, 14 Mar 2010 12:58:05 +0000]
gigaset: avoid registering CAPI driver more than once

Registering/unregistering the Gigaset CAPI driver when a device is
connected/disconnected causes an Oops when disconnecting two Gigaset
devices in a row, because the same capi_driver structure gets
unregistered twice. Fix by making driver registration/unregistration
a separate operation (empty in the ISDN4Linux case) called when the
main module is loaded/unloaded.

Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Acked-by: Karsten Keil <keil@b1-systems.de>
CC: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoobsolete config in kernel source: HSO_AUTOPM
Christoph Egger [Thu, 11 Mar 2010 12:07:54 +0000]
obsolete config in kernel source: HSO_AUTOPM

CONFIG_HSO_AUTOPM is set by KConfig / set in the Kernel source, makefiles
and won't be ever set this way, therefor simply removing the protected
code.

Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoobsolete config in kernel source: USE_INTERNAL_TIMER
Christoph Egger [Thu, 11 Mar 2010 12:07:52 +0000]
obsolete config in kernel source: USE_INTERNAL_TIMER

CONFIG_USE_INTERNAL_TIMER seems to be the remainings of some experiment.
It is explicitely #undef-ed as not working, only referenced from one
source file and rather aged.

Hereby cleaning it from the kernel tree.

Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Acked-by: Roel Kluin <roel.kluin@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoatm: use for_each_set_bit()
Akinobu Mita [Thu, 11 Mar 2010 12:07:50 +0000]
atm: use for_each_set_bit()

Replace open-coded loop with for_each_set_bit().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agophonet: use for_each_set_bit()
Akinobu Mita [Thu, 11 Mar 2010 12:07:49 +0000]
phonet: use for_each_set_bit()

Replace open-coded loop with for_each_set_bit().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotimestamping: fix example build
Randy Dunlap [Fri, 12 Mar 2010 19:23:27 +0000]
timestamping: fix example build

Fix Makefiles so that Documentation/networking/timestamping/timestamping.c
will build when using the CONFIG_BUILD_DOCSRC kconfig option.
(timestamping.c does not build currently with its simple Makefile.)

Also fix printf format warnings.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodrivers/net: drop redundant memset
Julia Lawall [Tue, 9 Mar 2010 11:14:11 +0000]
drivers/net: drop redundant memset

The region set by the call to memset is immediately overwritten by the
subsequent call to memcpy.

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

// <smpl>
@@
expression e1,e2,e3,e4;
@@

- memset(e1,e2,e3);
  memcpy(e1,e4,e3);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoi4l: change magic numbers in Eicon DIVA ISDN driver to symbolic names
Ian Munsie [Thu, 11 Mar 2010 12:07:25 +0000]
i4l: change magic numbers in Eicon DIVA ISDN driver to symbolic names

Replace references to the '20' magic number found throughout the Eicon
ISDN driver for the length of the station_id field in the T30_INFO struct
with the T30_MAX_STATION_ID_LENGTH symbolic constant.

Signed-off-by: Ian Munsie <imunsie@au.ibm.com>
Cc: Armin Schindler <mac@melware.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Stoyan Gaydarov <sgayda2@uiuc.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoi4l: silence compiler warnings for array access in Eicon DIVA ISDN driver
Ian Munsie [Thu, 11 Mar 2010 12:07:24 +0000]
i4l: silence compiler warnings for array access in Eicon DIVA ISDN driver

When compiling this driver, the compiler throws the following warnings:

drivers/isdn/hardware/eicon/message.c:8426: warning: array subscript is above array bounds
drivers/isdn/hardware/eicon/message.c:8427: warning: array subscript is above array bounds
drivers/isdn/hardware/eicon/message.c:8434: warning: array subscript is above array bounds
drivers/isdn/hardware/eicon/message.c:8435: warning: array subscript is above array bounds
drivers/isdn/hardware/eicon/message.c:8436: warning: array subscript is above array bounds
drivers/isdn/hardware/eicon/message.c:8447: warning: array subscript is above array bounds

This arises from the particular semantics the driver is using to write to
the nlc array (static byte[256]).  The array has a length in byte 0
followed by a T30_INFO struct starting at byte 1.

The T30_INFO struct has a number of variable length strings after the
station_id entry, which cannot be explicitly defined in the struct and the
driver accesses them with an array index to station_id beyond the length
of station_id.

This patch merely changes the semantics that the driver uses to access the
entries after the station_id entry to use the original 256 byte nlc array
taking the offset and length of the station_id entry to calculate where to
write in the array, thereby silencing the warning.

Signed-off-by: Ian Munsie <imunsie@au.ibm.com>
Cc: Armin Schindler <mac@melware.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Stoyan Gaydarov <sgayda2@uiuc.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoisdn: misplaced parenthesis in pof_handle_data()
Roel Kluin [Thu, 11 Mar 2010 12:07:22 +0000]
isdn: misplaced parenthesis in pof_handle_data()

The parenthesis was misplaced.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobnx2x: change smp_mb() comment to conform the true
Stanislaw Gruszka [Tue, 9 Mar 2010 06:55:02 +0000]
bnx2x: change smp_mb() comment to conform the true

Access to fp->tx_bp_prod is protected by __netif_tx_lock,
smp_mb() is not needed for that.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobnx2x: remove not necessary compiler barrier
Stanislaw Gruszka [Tue, 9 Mar 2010 06:55:01 +0000]
bnx2x: remove not necessary compiler barrier

Access to fp->tx_bd_prod is protected by __netif_tx_lock, so we do not
need any barrier for that.

Update of fp->tx_bd_cons in bnx2x_tx_int() is not protected by lock, but
barrier() nor smb_mb() in bnx2x_tx_avail() not guarantee we will see
values that is written on other cpu. Ordering issues between
netif_tx_stop_queue(), netif_tx_queue_stopped(), fp->tx_bd_cons = bd_cons
and bnx2x_tx_avail() are already handled by smp_mb() in bnx2x_tx_int()
and bnx2x_start_xmit().

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobnx2x: use smp_mb() to keep ordering of read write operations
Stanislaw Gruszka [Tue, 9 Mar 2010 06:55:00 +0000]
bnx2x: use smp_mb() to keep ordering of read write operations

Since we want to keep ordering of write to fp->bd_tx_cons and
netif_tx_queue_stopped(txq), what is read of txq->state, we have to use
general memory barrier.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobe2net: fix mccq create for big endian architectures
Ajit Khaparde [Thu, 11 Mar 2010 01:35:59 +0000]
be2net: fix mccq create for big endian architectures

The request to create an mccq was being dispatched without
doing a byte swap of num_pages. This byte swap is necessary
for Big Endian systems like PPC. Not having this fix leads
mccq create to fail on BE ASICs running newer version of
firmware, thereby causing driver initialization failure.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoTI DaVinci EMAC: Convert to dev_pm_ops
chaithrika@ti.com [Wed, 10 Mar 2010 22:37:56 +0000]
TI DaVinci EMAC: Convert to dev_pm_ops

Migrate from the legacy PM hooks to use dev_pm_ops structure.

Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: davinci emac: use dma_{map, unmap}_single API for cache coherency
Sekhar Nori [Tue, 9 Mar 2010 01:20:37 +0000]
net: davinci emac: use dma_{map, unmap}_single API for cache coherency

The davinci emac driver uses some ARM specific DMA APIs
for cache coherency which have been removed from kernel
with the 2.6.34 merge.

Modify the driver to use the dma_{map, unmap}_single() APIs
defined in dma-mapping.h

Without this fix, the driver fails to compile on Linus's
tree.

Tested on DM365 and OMAP-L138 EVMs.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoe100: Fix ring parameter change handling regression.
David S. Miller [Mon, 15 Mar 2010 22:23:30 +0000]
e100: Fix ring parameter change handling regression.

When the PCI pool changes were added to fix resume failures:

commit 98468efddb101f8a29af974101c17ba513b07be1
e100: Use pci pool to work around GFP_ATOMIC order 5 memory allocation failu

and

commit 70abc8cb90e679d8519721e2761d8366a18212a6
e100: Fix broken cbs accounting due to missing memset.

This introduced a problem that can happen if the TX ring size
is increased.  We need to size the PCI pool using cbs->max
instead of the default cbs->count value.

Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobridge: ensure to unlock in error path in br_multicast_query().
YOSHIFUJI Hideaki [Sat, 13 Mar 2010 20:27:21 +0000]
bridge: ensure to unlock in error path in br_multicast_query().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodrivers/net/tulip/eeprom.c: fix bogus "(null)" in tulip init messages
Joe Perches [Sat, 13 Mar 2010 20:26:15 +0000]
drivers/net/tulip/eeprom.c: fix bogus "(null)" in tulip init messages

On Wed, 2010-03-10 at 08:41 -0800, David Miller wrote:
> From: Mikael Pettersson <mikpe@it.uu.se>
> Date: Wed, 10 Mar 2010 16:33:28 +0100
> > Booting 2.6.34-rc1 on a machine with a tulip nic I see
> > a number of kernel messages that include "(null)" where
> > previous kernels included the string "tulip0":
> CC:'ing the guilty party :-)  It's one of the following
> commits:

Thanks Mikael.

Anonymity has some good attributes.
Blame avoidance is one of them.

I've broad shoulders.  It's me, then Dwight Howard...

There might be another few of these where ->name or ->dev
was used before struct device or net_device was registered.
I'll go back and check.

tulip_core has:

if (tp->flags & HAS_MEDIA_TABLE) {
sprintf(dev->name, DRV_NAME "%d", board_idx); /* hack */
tulip_parse_eeprom(dev);
strcpy(dev->name, "eth%d"); /* un-hack */
}

So I don't feel _too_ bad.

tulip_parse_eeprom is done before register_netdev so the logging
there can not use netdev_<level> or dev_<level>(&dev->dev

Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agosky2: Avoid rtnl_unlock without rtnl_lock
Mike McCormack [Sat, 13 Mar 2010 20:24:18 +0000]
sky2: Avoid rtnl_unlock without rtnl_lock

Make sure we always call rtnl_lock before going down the
error path in sky2_resume, which unlocks the rtnl lock.

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoipv6: Send netlink notification when DAD fails
Herbert Xu [Sat, 13 Mar 2010 20:23:29 +0000]
ipv6: Send netlink notification when DAD fails

If we are managing IPv6 addresses using DHCP, it would be nice
for user-space to be notified if an address configured through
DHCP fails DAD.  Otherwise user-space would have to poll to see
whether DAD succeeds.

This patch uses the existing notification mechanism and simply
hooks it into the DAD failure code path.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodrivers/net/tg3.c: change the field used with the TG3_FLAG_10_100_ONLY constant
Julia Lawall [Sat, 13 Mar 2010 20:22:16 +0000]
drivers/net/tg3.c: change the field used with the TG3_FLAG_10_100_ONLY constant

The constant TG3_FLAG_10_100_ONLY should be used with the tg3_flags field,
not the tg3_flags2 field, as done elsewhere in the same file.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Sat, 13 Mar 2010 20:17:09 +0000]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

10 years agoipconfig: Handle devices which take some time to come up.
David S. Miller [Fri, 12 Mar 2010 08:00:17 +0000]
ipconfig: Handle devices which take some time to come up.

Some network devices, particularly USB ones, take several seconds to
fully init and appear in the device list.

If the user turned ipconfig on, they are using it for NFS root or some
other early booting purpose.  So it makes no sense to just flat out
fail immediately if the device isn't found.

It also doesn't make sense to just jack up the initial wait to
something crazy like 10 seconds.

Instead, poll immediately, and then periodically once a second,
waiting for a usable device to appear.  Fail after 12 seconds.

Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Christian Pellegrin <chripell@fsfe.org>

10 years agoMerge branch 'wireless-2.6' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...
John W. Linville [Wed, 10 Mar 2010 21:34:38 +0000]
Merge branch 'wireless-2.6' of git://git./linux/kernel/git/iwlwifi/iwlwifi-2.6

10 years agomac80211: Fix memory leak in ieee80211_if_write()
Eric Dumazet [Wed, 10 Mar 2010 16:13:36 +0000]
mac80211: Fix memory leak in ieee80211_if_write()

Fix memory leak and use kmalloc() instead of kzalloc() as we are going
to overwrite the allocated buffer.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agomac80211: Fix (dynamic) power save entry
Juuso Oikarinen [Tue, 9 Mar 2010 12:25:02 +0000]
mac80211: Fix (dynamic) power save entry

Currently hardware with !IEEE80211_HW_PS_NULLFUNC_STACK and
IEEE80211_HW_REPORTS_TX_ACK_STATUS will never enter PSM due to the
conditions in the power save entry functions.

Fix those conditions.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoipw2200: use kmalloc for large local variables
Zhu Yi [Tue, 9 Mar 2010 08:05:31 +0000]
ipw2200: use kmalloc for large local variables

Fixed below compiler warning:

drivers/net/wireless/ipw2x00/ipw2200.c: In function ‘ipw_load_firmware’:
drivers/net/wireless/ipw2x00/ipw2200.c:3260: warning: the frame size of
1168 bytes is larger than 1024 bytes

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath5k: read eeprom IQ calibration values correctly for G mode
Bruno Randolf [Tue, 9 Mar 2010 07:56:10 +0000]
ath5k: read eeprom IQ calibration values correctly for G mode

we read the IQ correction values (i_cal and q_cal) for G mode from a wrong
location (the same shifts as for A mode is applied which is incorrect). use
correct locations, matching the docs and HAL sources.

also we should write IQ correction only when we have that information in the
EEPROM, starting from version 4. also write it in the same way as we do in the
periodic recalibration (enable last), just to be sure.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath5k: fix I/Q calibration (for real)
Bruno Randolf [Tue, 9 Mar 2010 07:56:05 +0000]
ath5k: fix I/Q calibration (for real)

I/Q calibration was completely broken, resulting in a high number of CRC errors
on received packets. before i could see around 10% to 20% CRC errors, with this
patch they are between 0% and 3%.

1.) the removal of the mask in commit "ath5k: Fix I/Q calibration
(f1cf2dbd0f798b71b1590e7aca6647f2caef1649)" resulted in no mask beeing used
when writing the I/Q values into the register. additional errors in the
calculation of the values (see 2.) resulted too high numbers, exceeding the
masks, so wrong values like 0xfffffffe were written. to be safe we should
always use the bitmask when writing parts of a register.

2.) using a (s32) cast for q_coff is a wrong conversion to signed, since we
convert to a signed value later by substracting 128. this resulted in too low
numbers for Q many times, which were limited to -16 by the boundary check later
on.

3.) checked everything against the HAL sources and took over comments and minor
optimizations from there.

4.) we can't use ENABLE_BITS when we want to write a number (the number can
contain zeros). also always write the correction values first and set ENABLE
bit last, like the HAL does.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Cc: stable@kernel.org
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath5k: fix TSF reset
Bruno Randolf [Tue, 9 Mar 2010 07:55:33 +0000]
ath5k: fix TSF reset

to reset the TSF, AR5K_BEACON_RESET_TSF has to be 1, not 0. also we have a
function for that so use it.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agoath5k: use fixed antenna for tx descriptors
Bruno Randolf [Tue, 9 Mar 2010 07:55:23 +0000]
ath5k: use fixed antenna for tx descriptors

when using a fixed antenna we should use the antenna number in all tx
descriptors, otherwise the hardware will sometimes send the frame out on the
other antenna. it seems like the hardware does not always respect the default
antenna and diversity settings (esp.  AR5K_STA_ID1_DEFAULT_ANTENNA).

also i would like to note that antenna diversity does not always work correctly
on 5414 (at least) when only one antenna is connected: for example all frames
might be received on antenna A but still the HW tries to send on antenna B some
times, causing packet loss.

this is both verified with the antenna statistics output of the previous patch
and a spectrum analyzer.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agolibipw: split ieee->networks into small pieces
Zhu Yi [Mon, 8 Mar 2010 05:18:03 +0000]
libipw: split ieee->networks into small pieces

The ieee->networks consists of 128 struct libipw_network entries. If
we allocate this chunk of memory altogether, it ends up with an
order 4 page allocation. High order page allocation is likely to fail
on system high load. This patch splits the big chunk memory allocation
into small pieces, each is 344 bytes, allocates them with 128 times.

The patch fixed bug http://bugzilla.kernel.org/show_bug.cgi?id=14989

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agomac80211: Fix sta_mtx unlocking on insert STA failure path
Jouni Malinen [Sat, 6 Mar 2010 16:35:08 +0000]
mac80211: Fix sta_mtx unlocking on insert STA failure path

Commit 34e895075e21be3e21e71d6317440d1ee7969ad0 introduced sta_mtx
locking into sta_info_insert() (now sta_info_insert_rcu), but forgot
to unlock this mutex on one of the error paths. Fix this by adding
the missing mutex_unlock() call for the case where STA insert fails
due to an entry existing already. This may happen at least in AP mode
when a STA roams between two BSSes (vifs).

Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agort2x00: remove KSEG1ADDR define from rt2x00soc.h
Helmut Schaa [Fri, 5 Mar 2010 16:44:22 +0000]
rt2x00: remove KSEG1ADDR define from rt2x00soc.h

Remove the KSEG1ADDR define from rt2x00soc.h as it redefines and covers the
correct one from the arch/mips/include/asm/addrspace.h. Otherwise the driver
oopses on the target platform (Ralink rt3050 board).

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

10 years agonet: add ColdFire support to the smc91x driver
Greg Ungerer [Wed, 10 Mar 2010 15:37:06 +0000]
net: add ColdFire support to the smc91x driver

Some embedded ColdFire based boards use the SMC 91x family of ethernet
devices. (For example the Freescale M5249C3 and MoretonBay NETtel).

Add IO access support to the SMC91x driver, and allow this driver to
be configured for ColdFire platforms.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoasix: fix setting mac address for AX88772
Jussi Kivilinna [Tue, 9 Mar 2010 12:24:38 +0000]
asix: fix setting mac address for AX88772

Setting new MAC address only worked when device was set to promiscuous mode.
Fix MAC address by writing new address to device using undocumented command
AX_CMD_READ_NODE_ID+1. Patch is tested with AX88772 device.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David Hollis <dhollis@davehollis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoipv6 ip6_tunnel: eliminate unused recursion field from ip6_tnl{}.
YOSHIFUJI Hideaki / 吉藤英明 [Tue, 9 Mar 2010 16:47:52 +0000]
ipv6 ip6_tunnel: eliminate unused recursion field from ip6_tnl{}.

Commit a43912ab19... ("tunnel: eliminate recursion field") eliminated
use of recursion field from tunnel structures, but its definition
still exists in ip6_tnl{}.

Let's remove that unused field.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: Fix dev_mc_add()
Eric Dumazet [Tue, 9 Mar 2010 19:09:08 +0000]
net: Fix dev_mc_add()

Commit 6e17d45a (net: add addr len check to dev_mc_add)
added a bug in dev_mc_add(), since it can now exit with a lock
imbalance.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: Annotates neigh_invalidate()
Eric Dumazet [Tue, 9 Mar 2010 19:40:54 +0000]
net: Annotates neigh_invalidate()

Annotates neigh_invalidate() with __releases() and __acquires() for
sparse sake.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotcp: Fix tcp_v4_rcv()
Eric Dumazet [Tue, 9 Mar 2010 05:55:56 +0000]
tcp: Fix tcp_v4_rcv()

Commit d218d111 (tcp: Generalized TTL Security Mechanism) added a bug
for TIMEWAIT sockets. We should not test min_ttl for TW sockets.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotg3: Fix tg3_poll_controller() passing wrong pointer to tg3_interrupt()
Louis Rilling [Tue, 9 Mar 2010 06:14:41 +0000]
tg3: Fix tg3_poll_controller() passing wrong pointer to tg3_interrupt()

Commit 09943a1819a240ff4a72f924d0038818fcdd0a90
Author: Matt Carlson <mcarlson@broadcom.com>
Date:   Fri Aug 28 14:01:57 2009 +0000

tg3: Convert ISR parameter to tnapi

forgot to update tg3_poll_controller(), leading to intermittent crashes with
netpoll.

Fix this.

Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqeth: change checksumming default for HiperSockets
Frank Blaschka [Mon, 8 Mar 2010 20:36:57 +0000]
qeth: change checksumming default for HiperSockets

Deactivate inbound checksumming on HiperSocket is a valid but
dangerous optimization in case the frame is routed from an OSA
network to an HiperSockets network. To go for sure we change the
default to software checksumming.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqeth: no recovery after layer mismatch (z/VM NICs)
Ursula Braun [Mon, 8 Mar 2010 20:36:56 +0000]
qeth: no recovery after layer mismatch (z/VM NICs)

Depending on their definition in z/VM, virtual devices for z/VM
VSWITCH or GuestLAN must be configured either in layer2 or in
layer3 mode. If qeth detects a layer mismatch, device activation
fails. Trying to recover from this error cannot help; thus
scheduling a recovery should be avoided.
In addition, since recovery is forbidden during online setting of
a qeth device, existence of its network device is guaranteed for all
dev_close() calls in qeth. The corresponding checks can be removed.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqeth: set promisc off after trace disabling failure
Ursula Braun [Mon, 8 Mar 2010 20:36:55 +0000]
qeth: set promisc off after trace disabling failure

If HiperSockets Network Traffic Analyzer is switched off, but trace
disabling fails somehow, the qeth driver does not switch off its
promisc mode status. A following sniffer reactivation fails, since
qeth does not see a need to reenable tracing.
At the same time the code analyzing results of trace commands is
restructured.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqeth: l3 send dhcp in non pass thru mode
Frank Blaschka [Mon, 8 Mar 2010 20:36:54 +0000]
qeth: l3 send dhcp in non pass thru mode

dhcp frames are valid IPv4 packets so there is no need to send them
in pass thru mode. This allows dhcp packets to pass HiperSockets.
Also the dhcp release frame is send out correctly with this patch.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqeth: enable kmsg hash processing in qeth_core_sys.c
Ursula Braun [Mon, 8 Mar 2010 20:36:53 +0000]
qeth: enable kmsg hash processing in qeth_core_sys.c

provide qeth kmsg definitions to enable hash string generation for
kernel message created with dev_err().

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoRevert "iwlwifi: Send broadcast probe request only when asked to"
Reinette Chatre [Thu, 25 Feb 2010 18:02:19 +0000]
Revert "iwlwifi: Send broadcast probe request only when asked to"

This reverts commit 21b2d8bd2f0d4e0f21ade147fd193c8b9c1fd2b9.

As explained by Johannes:
When we
build a probe request frame in the buffer with the SSID, we could
arrive over the limit of 200 bytes. When we build it in the buffer
without the SSID (wildcard) we don't arrive over 200 bytes, but the
ucode still allows direct probe in addition because it has an internal
buffer that is larger when it inserts the SSID...

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

10 years agoiwl3945: fix memory corruption
Reinette Chatre [Fri, 26 Feb 2010 19:01:36 +0000]
iwl3945: fix memory corruption

Recent patch "iwlwifi: move 3945 clip groups to 3945 data" exposed a memory
corruption problem. When initializing the clip groups the code was
mistakenly using the iwlagn rate count, not the 3945 rate count. This
resulted in more memory being written than was allocated.

"iwlwifi: move 3945 clip groups to 3945 data" moved the location where the
clip groups are stored and the impact is now severe in that the number of
configured TX queues is modified. Previously the
"temperature" field was overwritten, which did not seem to affect the
operation.

Fix this one instance where wrong rate count was used. I also noticed one
more location where the iwlagn rate count was used to index an iwl3945
array, fix this. I also modified one location that modified the iwlagn rate
count to obtain the iwl3945 rate count ... just use the iwl3945 rate count
directly.

This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2165 and
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2168

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

10 years agoMAINTAINERS: add netdev to CAN network layer and drivers entries
Wolfgang Grandegger [Mon, 8 Mar 2010 20:51:41 +0000]
MAINTAINERS: add netdev to CAN network layer and drivers entries

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotipc: filter out messages not intended for this host
Neil Horman [Mon, 8 Mar 2010 20:43:56 +0000]
tipc: filter out messages not intended for this host

Port commit 20deb48d16fdd07ce2fdc8d03ea317362217e085
from git://tipc.cslab.ericsson.net/pub/git/people/allan/tipc.git

Part of the large effort I'm trying to help with getting all the downstreamed
code from windriver forward ported to the upstream tree

Origional commit message
Restore check to filter out inadverdently received messages
This patch reimplements a check that allows TIPC to discard messages
that are not intended for it.  This check was present in TIPC 1.5/1.6,
but was removed by accident during the development of TIPC 1.7; it has
now been updated to account for new features present in TIPC 1.7 and
reinserted into TIPC.  The main benefit of this check is to filter
out messages arriving from orphaned link endpoints, which can arise
when a node exits the network and then re-enters it with a different
TIPC network address (i.e. <Z.C.N> value).

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Origionally-authored-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotipc: fix endianness on tipc subscriber messages
Neil Horman [Mon, 8 Mar 2010 20:20:58 +0000]
tipc: fix endianness on tipc subscriber messages

Remove htohl implementation from tipc

I was working on forward porting the downstream commits for TIPC and ran accross this one:
http://tipc.cslab.ericsson.net/cgi-bin/gitweb.cgi?p=people/allan/tipc.git;a=commitdiff;h=894279b9437b63cbb02405ad5b8e033b51e4e31e

I was going to just take it, when I looked closer and noted what it was doing.
This is basically a routine to byte swap fields of data in sent/received packets
for tipc, dependent upon the receivers guessed endianness of the peer when a
connection is established.  Asside from just seeming silly to me, it appears to
violate the latest RFC draft for tipc:
http://tipc.sourceforge.net/doc/draft-spec-tipc-02.txt
Which, according to section 4.2 and 4.3.3, requires that all fields of all
commands be sent in network byte order.  So instead of just taking this patch,
instead I'm removing the htohl function and replacing the calls with calls to
ntohl in the rx path and htonl in the send path.

As part of this fix, I'm also changing the subscr_cancel function, which
searches the list of subscribers, using a memcmp of the entire subscriber list,
for the entry to tear down.  unfortunately it memcmps the entire tipc_subscr
structure which has several bits that are private to the local side, so nothing
will ever match.  section 5.2 of the draft spec indicates the <type,upper,lower>
tuple should uniquely identify a subscriber, so convert subscr_cancel to just
match on those fields (properly endian swapped).

I've tested this using the tipc test suite, and its passed without issue.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoethtool: Use noinline_for_stack
Eric Dumazet [Mon, 8 Mar 2010 20:17:04 +0000]
ethtool: Use noinline_for_stack

Use self documenting noinline_for_stack instead of duplicated comments.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet/sunrpc: Convert (void)snprintf to snprintf
Joe Perches [Mon, 8 Mar 2010 20:15:59 +0000]
net/sunrpc: Convert (void)snprintf to snprintf

(Applies on top of "Remove uses of NIPQUAD, use %pI4")

Casts to void of snprintf are most uncommon in kernel source.
9 use casts, 1301 do not.

Remove the remaining uses in net/sunrpc/

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet/sunrpc: Remove uses of NIPQUAD, use %pI4
Joe Perches [Mon, 8 Mar 2010 20:15:28 +0000]
net/sunrpc: Remove uses of NIPQUAD, use %pI4

Originally submitted Jan 1, 2010
http://patchwork.kernel.org/patch/71221/

Convert NIPQUAD to the %pI4 format extension where possible
Convert %02x%02x%02x%02x/NIPQUAD to %08x/ntohl

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agocan: fix bfin_can build error after alloc_candev() change
Barry Song [Mon, 8 Mar 2010 20:13:57 +0000]
can: fix bfin_can build error after alloc_candev() change

Looks like commit a6e4bc530403 didn't include updates to drivers so the
Blackfin CAN driver fails to build now.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotcp: Fix tcp_make_synack()
Eric Dumazet [Mon, 8 Mar 2010 19:32:01 +0000]
tcp: Fix tcp_make_synack()

Commit 4957faad (TCPCT part 1g: Responder Cookie => Initiator), part
of TCP_COOKIE_TRANSACTION implementation, forgot to correctly size
synack skb in case user data must be included.

Many thanks to Mika Pentillä for spotting this error.

Reported-by: Penttillä Mika <mika.penttila@ixonos.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: fix route cache rebuilds
Eric Dumazet [Mon, 8 Mar 2010 03:20:00 +0000]
net: fix route cache rebuilds

We added an automatic route cache rebuilding in commit 1080d709fb9d8cd43
but had to correct few bugs. One of the assumption of original patch,
was that entries where kept sorted in a given way.

This assumption is known to be wrong (commit 1ddbcb005c395518 gave an
explanation of this and corrected a leak) and expensive to respect.

Paweł Staszewski reported to me one of his machine got its routing cache
disabled after few messages like :

[ 2677.850065] Route hash chain too long!
[ 2677.850080] Adjust your secret_interval!
[82839.662993] Route hash chain too long!
[82839.662996] Adjust your secret_interval!
[155843.731650] Route hash chain too long!
[155843.731664] Adjust your secret_interval!
[155843.811881] Route hash chain too long!
[155843.811891] Adjust your secret_interval!
[155843.858209] vlan0811: 5 rebuilds is over limit, route caching
disabled
[155843.858212] Route hash chain too long!
[155843.858213] Adjust your secret_interval!

This is because rt_intern_hash() might be fooled when computing a chain
length, because multiple entries with same keys can differ because of
TOS (or mark/oif) bits.

In the rare case the fast algorithm see a too long chain, and before
taking expensive path, we call a helper function in order to not count
duplicates of same routes, that only differ with tos/mark/oif bits. This
helper works with data already in cpu cache and is not be very
expensive, despite its O(N^2) implementation.

Paweł Staszewski sucessfully tested this patch on his loaded router.

Reported-and-tested-by: Paweł Staszewski <pstaszewski@itcare.pl>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqlcnic: remove extra space from board names
Amit Kumar Salecha [Mon, 8 Mar 2010 00:14:50 +0000]
qlcnic: remove extra space from board names

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqlcnic: fix bios version check
Amit Kumar Salecha [Mon, 8 Mar 2010 00:14:49 +0000]
qlcnic: fix bios version check

Bios sub version from unified fw image is calculated incorrect.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqlcnic: validate unified fw image
Sucheta Chakraborty [Mon, 8 Mar 2010 00:14:48 +0000]
qlcnic: validate unified fw image

Validate all sections of unified fw image, before accessing them,
to avoid seg fault.

Signed-off-by: Sucheta Chakraborty <sucheta@dut6195.unminc.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqlcnic: fix multicast handling
Sucheta Chakraborty [Mon, 8 Mar 2010 00:14:47 +0000]
qlcnic: fix multicast handling

For promiscuous mode, driver send request to device for deleting
multicast addresses and again it send request for adding them back
while exiting from this mode, this is bad for performance.
Just setting device in promiscuous mode is enough, no need to del/add
multicast addresses.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqlcnic: additional driver statistics.
Sucheta Chakraborty [Mon, 8 Mar 2010 00:14:46 +0000]
qlcnic: additional driver statistics.

Statistics added for lro/lso bytes, count for tx stop queue and
wake queue and skb alloc failure count.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoqlcnic: fix tx csum status
Sucheta Chakraborty [Mon, 8 Mar 2010 00:14:45 +0000]
qlcnic: fix tx csum status

Kernel default tx csum function (ethtool_op_get_tx_csum) doesn't show
correct csum status. It takes various FLAGS (NETIF_F_ALL_CSUM) in account
to show tx csum status, which driver doesn't set while disabling tx csum.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobe2net: remove unused code in be_load_fw
Ajit Khaparde [Sun, 7 Mar 2010 14:23:44 +0000]
be2net: remove unused code in be_load_fw

This patch cleans up some unused code from be_load_fw().

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobe2net: remove usage of be_pci_func
Ajit Khaparde [Sun, 7 Mar 2010 14:21:27 +0000]
be2net: remove usage of be_pci_func

When PCI functions are virtuialized in applications by assigning PCI
functions to VM (PCI passthrough), the be2net driver in the VM sees a

different function number. So, use of PCI function number in any
calculation will break existing code. This patch takes care of it.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotcp: Add SNMP counters for backlog and min_ttl drops
Eric Dumazet [Sun, 7 Mar 2010 23:21:57 +0000]
tcp: Add SNMP counters for backlog and min_ttl drops

Commit 6b03a53a (tcp: use limited socket backlog) added the possibility
of dropping frames when backlog queue is full.

Commit d218d111 (tcp: Generalized TTL Security Mechanism) added the
possibility of dropping frames when TTL is under a given limit.

This patch adds new SNMP MIB entries, named TCPBacklogDrop and
TCPMinTTLDrop, published in /proc/net/netstat in TcpExt: line

netstat -s | egrep "TCPBacklogDrop|TCPMinTTLDrop"
    TCPBacklogDrop: 0
    TCPMinTTLDrop: 0

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: add __must_check to sk_add_backlog
Zhu Yi [Sun, 7 Mar 2010 16:21:39 +0000]
net: add __must_check to sk_add_backlog

Add the "__must_check" tag to sk_add_backlog() so that any failure to
check and drop packets will be warned about.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobridge: Fix RCU race in br_multicast_stop
Herbert Xu [Fri, 5 Mar 2010 21:03:35 +0000]
bridge: Fix RCU race in br_multicast_stop

Thanks to Paul McKenny for pointing out that it is incorrect to use
synchronize_rcu_bh to ensure that pending callbacks have completed.
Instead we should use rcu_barrier_bh.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobridge: Use RCU list primitive in __br_mdb_ip_get
Herbert Xu [Fri, 5 Mar 2010 21:07:39 +0000]
bridge: Use RCU list primitive in __br_mdb_ip_get

As Paul McKenney correctly pointed out, __br_mdb_ip_get needs
to use the RCU list walking primitive in order to work correctly
on platforms where data-dependency ordering is not guaranteed.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoipv6: Optmize translation between IPV6_PREFER_SRC_xxx and RT6_LOOKUP_F_xxx.
YOSHIFUJI Hideaki / 吉藤英明 [Sun, 7 Mar 2010 00:14:44 +0000]
ipv6: Optmize translation between IPV6_PREFER_SRC_xxx and RT6_LOOKUP_F_xxx.

IPV6_PREFER_SRC_xxx definitions:
| #define IPV6_PREFER_SRC_TMP             0x0001
| #define IPV6_PREFER_SRC_PUBLIC          0x0002
| #define IPV6_PREFER_SRC_COA             0x0004

RT6_LOOKUP_F_xxx definitions:
| #define RT6_LOOKUP_F_SRCPREF_TMP        0x00000008
| #define RT6_LOOKUP_F_SRCPREF_PUBLIC     0x00000010
| #define RT6_LOOKUP_F_SRCPREF_COA        0x00000020

So, we can translate between these two groups by shift operation
instead of multiple 'if's.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agocpmac: bump version to 0.5.2
Florian Fainelli [Sun, 7 Mar 2010 00:55:50 +0000]
cpmac: bump version to 0.5.2

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agocpmac: fallback to switch mode if no PHY chip found
Florian Fainelli [Sun, 7 Mar 2010 00:55:47 +0000]
cpmac: fallback to switch mode if no PHY chip found

If we were unable to detect a PHY on any of the MDIO bus id we tried instead of
bailing out with -ENODEV, assume the MAC is connected to a switch and use MDIO
bus 0. This unbreaks quite a lot of devices out there whose switch cannot be
detected.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agocpmac: fix the receiving of 802.1q frames
Florian Fainelli [Sun, 7 Mar 2010 00:55:26 +0000]
cpmac: fix the receiving of 802.1q frames

Despite what the comment above CPMAC_SKB_SIZE says, the hardware also
needs to account for the FCS length in a received frame. This patch fix
the receiving of 802.1q frames which have 4 more bytes. While at it
unhardcode the definition and use the one from if_vlan.h.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoMAINTAINER: Correct CAN Maintainer responsibilities and paths
Oliver Hartkopp [Sat, 6 Mar 2010 08:31:50 +0000]
MAINTAINER: Correct CAN Maintainer responsibilities and paths

Update the CAN Maintainer responsibilities and add source paths.
Additional the SocketCAN core ML is not subscribers-only anymore.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoanother pegasus usb net device
Petko Manolov [Sun, 7 Mar 2010 06:10:01 +0000]
another pegasus usb net device

This one removes trailing whitespace in pegasus.h and more importantly
adds new Pegasus compatible device.

Signed-off-by: Julian Brown <julian@codesourcery.com>
Signed-off-by: Petko Manolov <petkan@nucleusys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoirda-usb: add error handling and fix leak
Dan Carpenter [Sun, 7 Mar 2010 02:35:42 +0000]
irda-usb: add error handling and fix leak

If the call to kcalloc() fails then we should return -ENOMEM.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agosock.c: potential null dereference
Dan Carpenter [Sat, 6 Mar 2010 01:04:45 +0000]
sock.c: potential null dereference

We test that "prot->rsk_prot" is non-null right before we dereference it
on this line.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoems_usb: cleanup: remove uneeded check
Dan Carpenter [Sat, 6 Mar 2010 01:11:38 +0000]
ems_usb: cleanup: remove uneeded check

"skb" is alway non-null here, but even if it were null the check isn't
needed because dev_kfree_skb() can handle it.

This eliminates a smatch warning about dereferencing a variable before
checking that it is non-null.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobridge: cleanup: remove unneed check
Dan Carpenter [Sat, 6 Mar 2010 01:14:09 +0000]
bridge: cleanup: remove unneed check

We dereference "port" on the lines immediately before and immediately
after the test so port should hopefully never be null here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agofix a race in ks8695_poll
Figo.zhang [Fri, 5 Mar 2010 16:36:02 +0000]
fix a race in ks8695_poll

fix a race at the end of NAPI processing in ks8695_poll() function.

Signed-off-by:Figo.zhang <figo1802@gmail.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agos2io: Fixing debug message
Breno Leitao [Thu, 4 Mar 2010 10:40:44 +0000]
s2io: Fixing debug message

Currently s2io is dumping debug messages using the interface name
before it was allocated, showing a message like the following:

s2io: eth%d: Ring Mem PHY: 0x7ef80000
s2io: s2io_reset: Resetting XFrame card eth%d

This patch just fixes it, printing the pci bus information for
the card instead of the interface name.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoe1000e: fix packet corruption and tx hang during NFSv2
Jesse Brandeburg [Fri, 5 Mar 2010 02:21:44 +0000]
e1000e: fix packet corruption and tx hang during NFSv2

when receiving a particular type of NFS v2 UDP traffic, the hardware could
DMA some bad data and then hang, possibly corrupting memory.

Disable the NFS parsing in this hardware, verified to fix the bug.

Originally reported and reproduced by RedHat's Neil Horman
CC: nhorman@tuxdriver.com
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotyphoon: fix incorrect use of smp_wmb()
David Dillow [Thu, 4 Mar 2010 04:37:16 +0000]
typhoon: fix incorrect use of smp_wmb()

The typhoon driver was incorrectly using smp_wmb() to order memory
accesses against IO to the NIC in a few instances. Use wmb() instead,
which is required to actually order between memory types.

Signed-off-by: David Dillow <dave@thedillows.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoethtool: Add direct access to ops->get_sset_count
Jeff Garzik [Thu, 4 Mar 2010 08:21:53 +0000]
ethtool: Add direct access to ops->get_sset_count

On 03/04/2010 09:26 AM, Ben Hutchings wrote:
> On Thu, 2010-03-04 at 00:51 -0800, Jeff Kirsher wrote:
>> From: Jeff Garzik<jgarzik@redhat.com>
>>
>> This patch is an alternative approach for accessing string
>> counts, vs. the drvinfo indirect approach.  This way the drvinfo
>> space doesn't run out, and we don't break ABI later.
> [...]
>> --- a/net/core/ethtool.c
>> +++ b/net/core/ethtool.c
>> @@ -214,6 +214,10 @@ static noinline int ethtool_get_drvinfo(struct net_device *dev, void __user *use
>>    info.cmd = ETHTOOL_GDRVINFO;
>>    ops->get_drvinfo(dev,&info);
>>
>> + /*
>> +  * this method of obtaining string set info is deprecated;
>> +  * consider using ETHTOOL_GSSET_INFO instead
>> +  */
>
> This comment belongs on the interface (ethtool.h) not the
> implementation.

Debatable -- the current comment is located at the callsite of
ops->get_sset_count(), which is where an implementor might think to add
a new call.  Not all the numeric fields in ethtool_drvinfo are obtained
from ->get_sset_count().

Hence the "some" in the attached patch to include/linux/ethtool.h,
addressing your comment.

> [...]
>> +static noinline int ethtool_get_sset_info(struct net_device *dev,
>> +                                          void __user *useraddr)
>> +{
> [...]
>> + /* calculate size of return buffer */
>> + for (i = 0; i<  64; i++)
>> + if (sset_mask&  (1ULL<<  i))
>> + n_bits++;
> [...]
>
> We have a function for this:
>
>  n_bits = hweight64(sset_mask);

Agreed.

I've attached a follow-up patch, which should enable my/Jeff's kernel
patch to be applied, followed by this one.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoethtool: Add direct access to ops->get_sset_count
Jeff Garzik [Wed, 3 Mar 2010 22:51:50 +0000]
ethtool: Add direct access to ops->get_sset_count

This patch is an alternative approach for accessing string
counts, vs. the drvinfo indirect approach.  This way the drvinfo
space doesn't run out, and we don't break ABI later.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: smc91x: Support Qualcomm MSM development boards.
David Brown [Fri, 5 Mar 2010 09:12:34 +0000]
net: smc91x: Support Qualcomm MSM development boards.

Signed-off-by: David Brown <davidb@quicinc.com>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
Acked-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: backlog functions rename
Zhu Yi [Thu, 4 Mar 2010 18:01:47 +0000]
net: backlog functions rename

sk_add_backlog -> __sk_add_backlog
sk_add_backlog_limited -> sk_add_backlog

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agox25: use limited socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:46 +0000]
x25: use limited socket backlog

Make x25 adapt to the limited socket backlog change.

Cc: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotipc: use limited socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:45 +0000]
tipc: use limited socket backlog

Make tipc adapt to the limited socket backlog change.

Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agosctp: use limited socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:44 +0000]
sctp: use limited socket backlog

Make sctp adapt to the limited socket backlog change.

Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agollc: use limited socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:43 +0000]
llc: use limited socket backlog

Make llc adapt to the limited socket backlog change.

Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoudp: use limited socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:42 +0000]
udp: use limited socket backlog

Make udp adapt to the limited socket backlog change.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotcp: use limited socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:41 +0000]
tcp: use limited socket backlog

Make tcp adapt to the limited socket backlog change.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: add limit for socket backlog
Zhu Yi [Thu, 4 Mar 2010 18:01:40 +0000]
net: add limit for socket backlog

We got system OOM while running some UDP netperf testing on the loopback
device. The case is multiple senders sent stream UDP packets to a single
receiver via loopback on local host. Of course, the receiver is not able
to handle all the packets in time. But we surprisingly found that these
packets were not discarded due to the receiver's sk->sk_rcvbuf limit.
Instead, they are kept queuing to sk->sk_backlog and finally ate up all
the memory. We believe this is a secure hole that a none privileged user
can crash the system.

The root cause for this problem is, when the receiver is doing
__release_sock() (i.e. after userspace recv, kernel udp_recvmsg ->
skb_free_datagram_locked -> release_sock), it moves skbs from backlog to
sk_receive_queue with the softirq enabled. In the above case, multiple
busy senders will almost make it an endless loop. The skbs in the
backlog end up eat all the system memory.

The issue is not only for UDP. Any protocols using socket backlog is
potentially affected. The patch adds limit for socket backlog so that
the backlog size cannot be expanded endlessly.

Reported-by: Alex Shi <alex.shi@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru
Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Vlad Yasevich <vladislav.yasevich@hp.com>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Allan Stephens <allan.stephens@windriver.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agorndis_wlan: correct multicast_list handling V3
Jiri Pirko [Thu, 4 Mar 2010 11:32:16 +0000]
rndis_wlan: correct multicast_list handling V3

My previous patch (655ffee284dfcf9a24ac0343f3e5ee6db85b85c5) added locking in
a bad way. Because rndis_set_oid can sleep, there is need to prepare multicast
addresses into local buffer under netif_addr_lock first, then call
rndis_set_oid outside. This caused reorganizing of the whole function.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Reported-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>