Commit graph

181675 commits

Author SHA1 Message Date
Andrew Morton
94cf6434a1 drivers/gpu/drm/radeon/radeon_combios.c: fix warning
drivers/gpu/drm/radeon/radeon_combios.c: In function 'radeon_combios_get_lvds_info':
drivers/gpu/drm/radeon/radeon_combios.c:893: warning: comparison is always false due to limited range of data type

Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05 11:47:14 +10:00
Randy Dunlap
d7748bacbb ati_pcigart: fix printk format warning
Fix ati_pcigart printk format warning:

drivers/gpu/drm/ati_pcigart.c:115: warning: format '%Lx' expects type 'long long unsigned int', but argument 3 has type 'dma_addr_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05 11:46:48 +10:00
Pauli Nieminen
9e5b2af75a drm/r100/kms: Emit cache flush to the end of command buffer. (v2)
Cache flush is required in case CPU is accessing rendered data.

This fixes glean/readPixSanity test case and random rendering
errors in sauerbraten and warzone2100.

v2 Fix comment ordering in r100_fence_ring_emit and remove extra
   defines added in first version.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05 11:45:10 +10:00
Jerome Glisse
062b389c87 drm/radeon/kms: fix regression rendering issue on R6XX/R7XX
It seems that some R6XX/R7XX silently ignore HDP flush when
programmed through ring, this patch addback an ioctl callback
to allow R6XX/R7XX hw to perform such flush through MMIO in
order to fix a regression. For more details see:

http://bugzilla.kernel.org/show_bug.cgi?id=15186

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05 11:43:51 +10:00
Jerome Glisse
c38c7b64a2 drm/radeon/kms: move blit initialization after we disabled VGA
VGA might be overwritting VRAM and corrupt our blit shader leading
to corruption, it likely won't happen if you load fbcon right after
radeon. Thanks to Shawn Starr and Andre Maasikas for tracking down
this issue.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05 11:43:09 +10:00
Linus Torvalds
fc76be434d Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: Fix wrong register in proc-arm6_7.S data abort handler
  ARM: 5909/1: ARM: Correct the FPSCR bits setting when raising exceptions
  ARM: 5904/1: ARM: Always generate the IT instruction when compiling for Thumb-2
  ARM: 5907/1: ARM: Fix the reset on the RealView PBX Development board
  mx35: add a missing comma in a pad definition
  mx25: make the FEC AHB clk secondary of the IPG
  mx25: fix time accounting
  mx25: properly initialize clocks
  mx25: remove unused mx25_clocks_init() argument
  i.MX25: implement secondary clocks for uarts and fec
  i.MX25: Allow secondary clocks in DEFINE_CLOCK
  ARM: MX3: Fixed typo in declared enum type name.
  MXC: Add AUDMUXv2 register decode to debugfs
  mx31ads: Provide an IRQ range to the WM835x on the 1133-EV1 module
  mx31ads: Provide a name for EXPIO interrupt chip
  mx31ads: Allow enable/disable of switchable supplies
2010-02-04 16:09:01 -08:00
Linus Torvalds
9d82d5efaf Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap: Disable serial port autoidle by default
  omap: Fix access to already released memory in clk_debugfs_register_one()
  omap: Fix arch/arm/mach-omap2/mux.c: Off by one error
  omap: Fix 3630 mux errors
  OMAP2/3: GPMC: ensure valid clock pointer
  OMAP2/3: IRQ: ensure valid base address
  ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAP
  omap: Remove old unused defines for OMAP_32KSYNCT_BASE
  omap: define _toggle_gpio_edge_triggering only for OMAP1
2010-02-04 16:08:42 -08:00
Linus Torvalds
a9861b5037 Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Don't clobber the attribute type in nfs_update_inode()
  NFS: Fix a umount race
  NFS: Fix an Oops when truncating a file
  NFS: Ensure that we handle NFS4ERR_STALE_STATEID correctly
  NFSv4.1: Don't call nfs4_schedule_state_recovery() unnecessarily
  NFSv4: Don't allow posix locking against servers that don't support it
  NFSv4: Ensure that the NFSv4 locking can recover from stateid errors
  NFS: Avoid warnings when CONFIG_NFS_V4=n
  NFS: Make nfs_commitdata_release static
  NFS: Try to commit unstable writes in nfs_release_page()
  NFS: Fix a reference leak in nfs_wb_cancel_page()
2010-02-04 16:08:15 -08:00
Linus Torvalds
aa16cd8d12 Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Handle futex value corruption gracefully
  futex: Handle user space corruption gracefully
  futex_lock_pi() key refcnt fix
  softlockup: Add sched_clock_tick() to avoid kernel warning on kgdb resume
2010-02-04 16:07:41 -08:00
Linus Torvalds
a3a71ca9a7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Extend umount wait coverage to full glock lifetime
  GFS2: Wait for unlock completion on umount
2010-02-04 16:06:48 -08:00
Tejun Heo
6f14a668f1 idr: revert misallocation bug fix
Commit 859ddf0974 tried to fix
misallocation bug but broke full bit marking by not clearing
pa[idp->layers] and also is causing X failures due to lookup failure
in drm code.  The cause of the latter hasn't been found yet.  Revert
the fix for now.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-04 16:03:41 -08:00
Breno Leitao
746079dabc qlge: Code clean up
Just reordering this assignment that doesn't depend on any
condition.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 15:42:28 -08:00
Breno Leitao
e0fee99fce qlge: removing unreachable block of code
Currently the qlge_change_mtu() is never called if the new_mtu is
equal current MTU, due this condition on dev_set_mtu():

        if (new_mtu == dev->mtu)
                return 0;

So, this block of code is never reached and is being removed.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 15:42:27 -08:00
Christoph Egger
d088dde7b1 ipv4: obsolete config in kernel source (IP_ROUTE_PERVASIVE)
CONFIG_IP_ROUTE_PERVASIVE is missing a corresponding config
IP_ROUTE_PERVASIVE somewhere in KConfig (and missing it for ages
already) so it looks like some aging artefact no longer needed.

Therefor this patch kills of the only remaining reference to that
config Item removing the already unrechable code snipet.

Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 14:58:46 -08:00
Rafael J. Wysocki
1b3f720bf0 pktgen: Fix freezing problem
Add missing try_to_freeze() to one of the pktgen_thread_worker() code
paths so that it doesn't block suspend/hibernation.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=15006

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Ciprian Dorin Craciun <ciprian.craciun@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 14:00:41 -08:00
Brian Haley
b0f83b280f doc: document IPv6 parameters
Update documentation to describe IPv6 parameters.
Reported by <greg@enjellic.com>.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 13:36:50 -08:00
Ron Mercer
15c052fc7f qlge: Add watchdog timer.
Add periodic heartbeat register read to trigger the eeh
recovery process.
We see cases where an eeh error was injected and the slot was
suspended.  An asic access attempt is required to flush the recovery process,
but without interrupts the process can stall.
Adding this periodic register read causes the recovery process to begin.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 13:32:46 -08:00
Jaroslav Kysela
21956b61f5 ALSA: ctxfi - fix PTP address initialization
After hours of debugging, I finally found the reason why some source
and runtime combination does not work. The PTP (page table pages)
address must be aligned. I am not sure how much, but alignment to
PAGE_SIZE is sufficient. Also, use ALSA's page allocation routines
to ensure proper virtual -> physical address translation.

Cc: <stable@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2010-02-04 21:48:00 +01:00
Jiri Pirko
f8f76db1db libphy: add phy_find_first function
Many drivers do this in them manually. Now they can use this function.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 10:23:02 -08:00
Jiri Pirko
6683ece36e net: use helpers to access mc list V2
This patch introduces the similar helpers as those already done for uc list.
However multicast lists are no list_head lists but "mademanually". The three
macros added by this patch will make the transition of mc_list to list_head
smooth in two steps:

1) convert all drivers to use these macros (with the original iterator of type
   "struct dev_mc_list")
2) once all drivers are converted, convert list type and iterators to "struct
   netdev_hw_addr" in one patch.

>From now on, drivers can (and should) use "netdev_for_each_mc_addr" to iterate
over the addresses with iterator of type "struct netdev_hw_addr". Also macros
"netdev_mc_count" and "netdev_mc_empty" to read list's length. This is the state
which should be reached in all drivers.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 10:22:25 -08:00
Alexander Duyck
feeb2721a7 igb: make certain to reassign legacy interrupt vectors after reset
This change corrects an issue that will cause false hangs when using either
82575 or 82580 in legacy interrupt mode.  The issue is caused when there is
a slow traffic flow and an "ethtool -r" is executed while using legacy or
MSI interrupts.  MSI-X is not affected by this issue due to the fact that
we were already reconfiguring the vectors after reset.

If possible it would be best to push this for net-2.6 since it is resolving
a bug but if that is not possible then net-next-2.6 will be fine.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 09:49:31 -08:00
Giuseppe Cavallaro
1b92403253 stmmac: fix 'lenght' typo in comments and code
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 09:33:21 -08:00
Thadeu Lima de Souza Cascardo
ae06b8330a can: ems_usb: removed duplicated code setting local echo support
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-04 09:21:28 -08:00
Chris Wilson
93533c291a drm/i915: Fix leak of relocs along do_execbuffer error path
Following a gpu hang, we would leak the relocation buffer. So simply
earrange the error path to always free the relocation buffer.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-04 09:04:01 -08:00
David S. Miller
10be7eb36b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-02-04 08:58:14 -08:00
Thomas Meyer
67026e0324 drm/i915: slow acpi_lid_open() causes flickering - V2
acpi_lid_open() could take up to 10ms on my computer.  Some component is
calling the drm GETCONNECTOR ioctl many times in a row.  This results in
flickering (for example, when starting a video).  Fix it by assuming an
always connected lid status.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-04 08:36:45 -08:00
David John
33c5fd121e drm/i915: Disable SR when more than one pipe is enabled
Self Refresh should be disabled on dual plane configs.  Otherwise, as
the SR watermark is not calculated for such configs, switching to non
VGA mode causes FIFO underrun and display flicker.

This fixes Korg Bug #14897.

Signed-off-by: David John <davidjon@xenontk.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>
2010-02-04 08:36:20 -08:00
Aneesh Kumar K.V
23b5c50945 Btrfs: apply updated fallocate i_size fix
This version of the i_size fix for fallocate makes sure we only update
the i_size when the current fallocate is really operating outside of
i_size.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:33:03 -05:00
Josef Bacik
efd049fb26 Btrfs: do not try and lookup the file extent when finishing ordered io
When running the following fio job

[torrent]
filename=torrent-test
rw=randwrite
size=4g
filesize=4g
bs=4k
ioengine=sync

you would see long stalls where no work was being done.  That is because we were
doing all this extra work to read in the file extent outside of the transaction,
however in the random io case this ends up hurting us because the file extents
are not there to begin with.  So axe this logic, since we end up reading in the
file extent when we go to update it anyway.  This took the fio job from 11 mb/s
with several ~10 second stalls to 24 mb/s to a couple of 1-2 second stalls.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:31:45 -05:00
Yan, Zheng
7a7965f83e Btrfs: Fix oopsen when dropping empty tree.
When dropping a empty tree, walk_down_tree() skips checking
extent information for the tree root. This will triggers a
BUG_ON in walk_up_proc().

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:31:45 -05:00
Miao Xie
d7ce5843bb Btrfs: remove BUG_ON() due to mounting bad filesystem
Mounting a bad filesystem caused a BUG_ON(). The following is steps to
reproduce it.
 # mkfs.btrfs /dev/sda2
 # mount /dev/sda2 /mnt
 # mkfs.btrfs /dev/sda1 /dev/sda2
 (the program says that /dev/sda2 was mounted, and then exits. )
 # umount /mnt
 # mount /dev/sda1 /mnt

At the third step, mkfs.btrfs exited in the way of make filesystem. So the
initialization of the filesystem didn't finish. So the filesystem was bad, and
it caused BUG_ON() when mounting it. But BUG_ON() should be called by the wrong
code, not user's operation, so I think it is a bug of btrfs.

This patch fixes it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:31:44 -05:00
Roel Kluin
014e4ac4f7 Btrfs: make error return negative in btrfs_sync_file()
It appears the error return should be negative

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:31:44 -05:00
Yan, Zheng
f044ba7835 Btrfs: fix race between allocate and release extent buffer.
Increase extent buffer's reference count while holding the lock.
Otherwise it can race with try_release_extent_buffer.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-04 11:31:44 -05:00
FUJITA Tomonori
06df6dafb5 x86/agp: Fix amd64-agp module initialization regression
This fixes the regression introduced by commit
42590a7501 ("x86/agp: Fix
agp_amd64_init and agp_amd64_cleanup").

The commit 61684ceaad fixed the
above regression but it's not enough. When amd64-agp is built as
a module, AGP isn't initialized, iommu is initialized, all the
aperture is owned by the iommu.

Reported-by: Marin Mitov <mitov@issp.bas.bg>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Marin Mitov <mitov@issp.bas.bg>
LKML-Reference: <20100204090802S.fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-04 07:27:26 +01:00
Catalin Marinas
2d68b7fe55 [libata] Call flush_dcache_page after PIO data transfers in libata-sff.c
flush_dcache_page() must be called after (!ATA_TFLAG_WRITE) the
data copying to avoid D-cache aliasing with user space or I-D cache
coherency issues (when reading data from an ATA device using PIO,
the kernel dirties the D-cache but there is no flush_dcache_page()
required on Harvard architectures).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-02-04 01:04:50 -05:00
Tejun Heo
cedc9bf906 ahci: add Acer G725 to broken suspend list
Acer G725 shares the same suspend problem with the HP laptops which
lose ATA devices on resume.  New firmware which fixes the problem is
already available.  Add G725 with old firmwares to the broken suspend
list.

This problem has been reported in bko#15104.

  http://bugzilla.kernel.org/show_bug.cgi?id=15104

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jani-Matti Hätinen <jani-matti.hatinen@iki.fi>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-02-04 01:01:39 -05:00
Christoph Hellwig
f7acede65d libata: fix ata_id_logical_per_physical_sectors
The value we get from the low byte of the ATA_ID_SECTOR_SIZE word is not not
a plain multiple, but the log of it, so fix the helper to give the correct
answer.  Without this we'll get an incorrect minimal I/O size in the block
limits VPD page for 4k sector drives.

Also change the return value of ata_id_logical_per_physical_sectors to u16
for the unlikely case of very large logical sectors.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-02-04 01:01:32 -05:00
Douglas Gilbert
bc496ed00a libata-scsi passthru: fix bug which truncated LBA48 return values
Fix assignment which overwrote SAT ATA PASS-THROUGH command EXTEND
bit setting (ATA_TFLAG_LBA48)

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-02-04 01:01:22 -05:00
Stephen Hemminger
90c30335a7 sky2: Flow control frames recorded as dropped packets
Thanks for your patch.  A more general solution would be to move the
rx_dropped up into sky2_receive.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:29 -08:00
stephen hemminger
3fbd9187d0 sky2: hand receive DMA mapping failures
If receive buffer mapping failed, then it was possible to get
stuck with unmapped receive buffer in DMA ring.

This would be an extremely rare condition because the driver had just
released the map for the last receive so it should be able to get
another map again (in soft-irq).

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:28 -08:00
Alexey Dobriyan
1621e09402 net: CONFIG_COMPAT redux
Ifdef out
	struct proto_ops::compat_ioctl
	struct proto_ops::compat_setsockopt
	struct proto_ops::compat_getsockopt
to make structures smaller on COMPAT=n kernels.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:28 -08:00
Christian Pellegrin
bf66f3736a can: mcp251x: Move to threaded interrupts instead of workqueues.
This patch addresses concerns about efficiency of handling incoming
packets. Handling of interrupts is done in a threaded interrupt handler
which has a smaller latency than workqueues. This change needed a rework
of the locking scheme that was much simplified. Some other (more or less
longstanding) bugs are fixed: utilization of just half of the RX
buffers, useless wait for interrupt on open, more reliable reset
sequence. The MERR interrupt is not used anymore: it overloads the CPU
in error-passive state without any additional information. One shot mode
is disabled because it's not clear if it can be handled efficiently on
this CAN controller.

Signed-off-by: Christian Pellegrin <chripell@fsfe.org>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:28 -08:00
Ajit Khaparde
35cfabdc5e bonding: Remove net_device_stats from bonding struct
There is no need to maintain stats in the bonding structure.
Use the instance of net_device_stats in netdevice.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:27 -08:00
Joe Perches
235ecb1db0 drivers/net/davinci_emac.c: Fix continuation line formats
String constants that are continued on subsequent lines with \
are not good.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:27 -08:00
Thadeu Lima de Souza Cascardo
59b26c7291 trivial: remove duplicated "from" in CAN USB EMS Kconfig help
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:32:18 -08:00
Arnd Bergmann
20d29d7a91 net: macvtap driver
In order to use macvlan with qemu and other tools that require
a tap file descriptor, the macvtap driver adds a small backend
with a character device with the same interface as the tun
driver, with a minimum set of features.

Macvtap interfaces are created in the same way as macvlan
interfaces using ip link, but the netif is just used as a
handle for configuration and accounting, while the data
goes through the chardev. Each macvtap interface has its
own character device, simplifying permission management
significantly over the generic tun/tap driver.

Cc: Patrick McHardy <kaber@trash.net>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>
Cc: David S. Miller" <davem@davemloft.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Or Gerlitz <ogerlitz@voltaire.com>
Cc: netdev@vger.kernel.org
Cc: bridge@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:20:33 -08:00
Arnd Bergmann
fc0663d6b5 macvlan: allow multiple driver backends
This makes it possible to hook into the macvlan driver
from another kernel module. In particular, the goal is
to extend it with the macvtap backend that provides
a tun/tap compatible interface directly on the macvlan
device.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:20:33 -08:00
Arnd Bergmann
8a83a00b07 net: maintain namespace isolation between vlan and real device
In the vlan and macvlan drivers, the start_xmit function forwards
data to the dev_queue_xmit function for another device, which may
potentially belong to a different namespace.

To make sure that classification stays within a single namespace,
this resets the potentially critical fields.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:20:32 -08:00
Joe Perches
6884b348ed net/rds: remove uses of NIPQUAD, use %pI4
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Grover <andy.grover@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-03 20:16:48 -08:00
Roel Kluin
650b2ef5d7 mISDN: positive error return should be negative in mode_hfcmulti()
The error return should be negative.  Its only caller that acts upon its
return, handle_bmsg(), transmits the positive error but can also return
negative errors.

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>
2010-02-03 20:16:48 -08:00