Commit Graph

1837 Commits

Author SHA1 Message Date
Roland Dreier 3a3eae0d66 Merge branches 'ehca' and 'ipoib' into for-linus 2008-08-12 13:52:54 -07:00
Alexander Schmidt 6773f079b7 IB/ehca: Discard double CQE for one WR
Under rare circumstances, the ehca hardware might erroneously generate
two CQEs for the same WQE, which is not compliant to the IB spec and
will cause unpredictable errors like memory being freed twice. To
avoid this problem, the driver needs to detect the second CQE and
discard it.

For this purpose, introduce an array holding as many elements as the
SQ of the QP, called sq_map. Each sq_map entry stores a "reported"
flag for one WQE in the SQ. When a work request is posted to the SQ,
the respective "reported" flag is set to zero. After the arrival of a
CQE, the flag is set to 1, which allows to detect the occurence of a
second CQE.

The mapping between WQE / CQE and the corresponding sq_map element is
implemented by replacing the lowest 16 Bits of the wr_id with the
index in the queue map. The original 16 Bits are stored in the sq_map
entry and are restored when the CQE is passed to the application.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-12 11:34:59 -07:00
Alexander Schmidt 129a10fb81 IB/ehca: Check idr_find() return value
The idr_find() function may fail when trying to get the QP that is
associated with a CQE, e.g. when a QP has been destroyed between the
generation of a CQE and the poll request for it.  In consequence, the
return value of idr_find() must be checked and the CQE must be
discarded when the QP cannot be found.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-12 11:34:59 -07:00
Alexander Schmidt 17c2b53adb IB/ehca: Repoll CQ on invalid opcode
When the ehca driver detects an invalid opcode in a CQE, it currently
passes the CQE to the application and returns with success. This patch
changes the CQE handling to discard CQEs with invalid opcodes and to
continue reading the next CQE from the CQ.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-12 11:34:58 -07:00
Alexander Schmidt 6c02eed930 IB/ehca: Rename goto label in ehca_poll_cq_one()
Rename the "poll_cq_one_read_cqe" goto label to what it actually does,
namely "repoll".

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-12 11:34:58 -07:00
Alexander Schmidt 51ad241af4 IB/ehca: Update qp_state on cached modify_qp()
Since the introduction of the port auto-detect mode for ehca, calls to
modify_qp() may be cached in the device driver when the ports are not
activated yet. When a modify_qp() call is cached, the qp state remains
untouched until the port is activated, which will leave the qp in the
reset state. In the reset state, however, it is not allowed to post SQ
WQEs, which confuses applications like ib_mad.

The solution for this problem is to immediately set the qp state as
requested by modify_qp(), even when the call is cached.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-12 11:34:58 -07:00
David J. Wilder b1404069f6 IPoIB/cm: Use vmalloc() to allocate rx_rings
There are users that are running UDP applications that require a large
receive queue size in order to get good performance.  To prevent
allocation failures for rx_rings when using non-SRQ mode and large
recv_queue_size (1K or larger), use vmalloc() instead of kcalloc() to
alocate rx_rings.

Signed-off-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-08 15:51:29 -07:00
Linus Torvalds 273b257839 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mad: Test ib_create_send_mad() return with IS_ERR(), not == NULL
  IB/mlx4: Allow 4K messages for UD QPs
  mlx4_core: Add ethernet fields to CQE struct
  IB/ipath: Fix printk format warnings
  RDMA/cxgb3: Fix deadlock initializing iw_cxgb3 device
  RDMA/cxgb3: Fix up MW access rights
  RDMA/cxgb3: Fix QP capabilities
  RDMA/cma: Remove padding arrays by using struct sockaddr_storage
  IB/ipath: Use unsigned long for irq flags
  IPoIB/cm: Set correct SG list in ipoib_cm_init_rx_wr()
2008-08-07 18:14:07 -07:00
Roland Dreier 06a91a02e9 Merge branches 'cma', 'cxgb3', 'ipath', 'ipoib', 'mad' and 'mlx4' into for-linus 2008-08-07 14:12:03 -07:00
Julien Brunel cd55ef5a10 IB/mad: Test ib_create_send_mad() return with IS_ERR(), not == NULL
In case of error, the function ib_create_send_mad() returns an ERR
pointer, but never returns a NULL pointer.  So testing the return
value for error should be done with IS_ERR, not by comparing with
NULL.

A simplified version of the semantic patch that makes this change is
as follows:

(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@correct_null_test@
expression x,E;
statement S1, S2;
@@
x = ib_create_send_mad(...)
<... when != x = E
if (
(
- x@p2 != NULL
+ ! IS_ERR ( x )
|
- x@p2 == NULL
+ IS_ERR( x )
)
 )
S1
else S2
...>
? x = E;
// </smpl>

Signed-off-by: Julien Brunel <brunel@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-07 14:11:56 -07:00
Alex Naslednikov 6e0d733d92 IB/mlx4: Allow 4K messages for UD QPs
Current code limits the max message size to 2K for UD QPs, while MTU
might be as big as 4K.  This patch sets the maximum message size to
4K, which is needed for UD to work correctly on fabrics with a 4K MTU.

Signed-off-by: Alex Naslednikov <xalex@mellanox.co.il>
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-07 14:06:50 -07:00
Yevgeny Petrilin f780a9f119 mlx4_core: Add ethernet fields to CQE struct
Add ethernet-related fields to struct mlx4_cqe so that the mlx4_en
ethernet NIC driver can share the same definition.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-06 20:14:06 -07:00
Alexander Beregalov 70117b9e86 IB/ipath: Fix printk format warnings
ipath_driver.c:1260: warning: format '%Lx' expects type 'long long unsigned int', but argument 6 has type 'long unsigned int'
    ipath_driver.c:1459: warning: format '%Lx' expects type 'long long unsigned int', but argument 4 has type 'u64'
    ipath_intr.c:358: warning: format '%Lx' expects type 'long long unsigned int', but argument 3 has type 'u64'
    ipath_intr.c:358: warning: format '%Lu' expects type 'long long unsigned int', but argument 6 has type 'u64'
    ipath_intr.c:1119: warning: format '%Lx' expects type 'long long unsigned int', but argument 5 has type 'u64'
    ipath_intr.c:1119: warning: format '%Lx' expects type 'long long unsigned int', but argument 3 has type 'u64'
    ipath_intr.c:1123: warning: format '%Lx' expects type 'long long unsigned int', but argument 3 has type 'u64'
    ipath_intr.c:1130: warning: format '%Lx' expects type 'long long unsigned int', but argument 4 has type 'u64'
    ipath_iba7220.c:1032: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'u64'
    ipath_iba7220.c:1045: warning: format '%llX' expects type 'long long unsigned int', but argument 3 has type 'u64'
    ipath_iba7220.c:2506: warning: format '%Lu' expects type 'long long unsigned int', but argument 4 has type 'u64'

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-04 11:12:18 -07:00
Steve Wise be43324d8b RDMA/cxgb3: Fix deadlock initializing iw_cxgb3 device
Running 'ifconfig up' on the cxgb3 interface with iw_cxgb3 loaded
causes a deadlock.  The rtnl lock is already held in this path.  The
function fw_supports_fastreg() was introduced in 2.6.27 to
conditionally set the IB_DEVICE_MEM_MGT_EXTENSIONS bit iff the
firmware was at 7.0 or greater, and this function also acquires the
rtnl lock and which thus causes a deadlock.  Further, if iw_cxgb3 is
loaded _after_ the nic interface is brought up, then the deadlock does
not occur and therefore fw_supports_fastreg() does need to grab the
rtnl lock in that path.

It turns out this code is all useless anyway.  The low level driver
will NOT allow the open if the firmware isn't 7.0, so iw_cxgb3 can
always set the MEM_MGT_EXTENSIONS bit.  Simplify...

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-04 11:08:37 -07:00
Steve Wise 1c355a6e80 RDMA/cxgb3: Fix up MW access rights
- MWs don't have local read/write permissions.
- Set the MW_BIND enabled bit if a MR has MW_BIND access.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-04 11:05:43 -07:00
Steve Wise 5f0f66b022 RDMA/cxgb3: Fix QP capabilities
- Set the stag0 and fastreg capability bits only for kernel qps.
- QP_PRIV flag is no longer used, so don't set it.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-04 11:04:42 -07:00
Roland Dreier 3f44675439 RDMA/cma: Remove padding arrays by using struct sockaddr_storage
There are a few places where the RDMA CM code handles IPv6 by doing

	struct sockaddr		addr;
	u8			pad[sizeof(struct sockaddr_in6) -
				    sizeof(struct sockaddr)];

This is fragile and ugly; handle this in a better way with just

	struct sockaddr_storage	addr;

[ Also roll in patch from Aleksey Senin <alekseys@voltaire.com> to
  switch to struct sockaddr_storage and get rid of padding arrays in
  struct rdma_addr. ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-04 11:02:14 -07:00
Stephen Rothwell b8b572e101 powerpc: Move include files to arch/powerpc/include/asm
from include/asm-powerpc.  This is the result of a

mkdir arch/powerpc/include/asm
git mv include/asm-powerpc/* arch/powerpc/include/asm

Followed by a few documentation/comment fixups and a couple of places
where <asm-powepc/...> was being used explicitly.  Of the latter only
one was outside the arch code and it is a driver only built for powerpc.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-08-04 12:02:00 +10:00
Niels de Vos 61a2d07d3f Remove newline from the description of module parameters
Some module parameters with only one line have the '\n' at the end of the
description.  This is not needed nor wanted as after the description the
type (i.e.  int) is followed by a newline.

Some modules contain a multi-line description, these are not affected
by this patch.

Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Ed L. Cashin <ecashin@coraid.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Roland Dreier <rolandd@cisco.com>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01 12:46:41 -07:00
Vegard Nossum 52fd8ca6ad IB/ipath: Use unsigned long for irq flags
A few functions in the ipath driver incorrectly use unsigned int to
hold irq flags for spin_lock_irqsave().

This patch was generated using the Coccinelle framework with the
following semantic patch:

The semantic patch I used was this:

@@
expression lock;
identifier flags;
expression subclass;
@@

- unsigned int flags;
+ unsigned long flags;

...

<+...

(
 spin_lock_irqsave(lock, flags)
|
 _spin_lock_irqsave(lock)
|
 spin_unlock_irqrestore(lock, flags)
|
 _spin_unlock_irqrestore(lock, flags)
|
 read_lock_irqsave(lock, flags)
|
 _read_lock_irqsave(lock)
|
 read_unlock_irqrestore(lock, flags)
|
 _read_unlock_irqrestore(lock, flags)
|
 write_lock_irqsave(lock, flags)
|
 _write_lock_irqsave(lock)
|
 write_unlock_irqrestore(lock, flags)
|
 _write_unlock_irqrestore(lock, flags)
|
 spin_lock_irqsave_nested(lock, flags, subclass)
|
 _spin_lock_irqsave_nested(lock, subclass)
|
 spin_unlock_irqrestore(lock, flags)
|
 _spin_unlock_irqrestore(lock, flags)
|
 _raw_spin_lock_flags(lock, flags)
|
 __raw_spin_lock_flags(lock, flags)
)

...+>

Cc: Ralph Campbell <ralph.campbell@qlogic.com>
Cc: Julia Lawall <julia@diku.dk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-30 09:29:06 -07:00
Roland Dreier e08198169e IPoIB/cm: Set correct SG list in ipoib_cm_init_rx_wr()
wr->sg_list should be set to the sge pointer passed in, not
priv->cm.rx_sge.

Reported-by: Hoang-Nam Nguyen <HNGUYEN@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-30 07:21:46 -07:00
Linus Torvalds 8be1a6d6c7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  mlx4: Update/add Mellanox Technologies copyright lines to mlx4 driver files
  mlx4_core: Add VLAN tag field to WQE control segment struct
  RDMA/nes: CM connection setup/teardown rework
  IPoIB: Correct help text for INFINIBAND_IPOIB_DEBUG
  IPoIB/cm: Connected mode is no longer EXPERIMENTAL
  RDMA/ucm: BKL is not needed for ib_ucm_open()
  RDMA/ucma: BKL is not needed for ucma_open()
2008-07-26 20:40:36 -07:00
Roland Dreier cc9969c967 Merge branches 'bkl-removal', 'ipoib', 'mlx4' and 'nes' into for-linus 2008-07-26 13:59:47 -07:00
FUJITA Tomonori 8d8bb39b9e dma-mapping: add the device argument to dma_mapping_error()
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
architecture does:

This enables us to cleanly fix the Calgary IOMMU issue that some devices
are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).

I think that per-device dma_mapping_ops support would be also helpful for
KVM people to support PCI passthrough but Andi thinks that this makes it
difficult to support the PCI passthrough (see the above thread).  So I
CC'ed this to KVM camp.  Comments are appreciated.

A pointer to dma_mapping_ops to struct dev_archdata is added.  If the
pointer is non NULL, DMA operations in asm/dma-mapping.h use it.  If it's
NULL, the system-wide dma_ops pointer is used as before.

If it's useful for KVM people, I plan to implement a mechanism to register
a hook called when a new pci (or dma capable) device is created (it works
with hot plugging).  It enables IOMMUs to set up an appropriate
dma_mapping_ops per device.

The major obstacle is that dma_mapping_error doesn't take a pointer to the
device unlike other DMA operations.  So x86 can't have dma_mapping_ops per
device.  Note all the POWER IOMMUs use the same dma_mapping_error function
so this is not a problem for POWER but x86 IOMMUs use different
dma_mapping_error functions.

The first patch adds the device argument to dma_mapping_error.  The patch
is trivial but large since it touches lots of drivers and dma-mapping.h in
all the architecture.

This patch:

dma_mapping_error() doesn't take a pointer to the device unlike other DMA
operations.  So we can't have dma_mapping_ops per device.

Note that POWER already has dma_mapping_ops per device but all the POWER
IOMMUs use the same dma_mapping_error function.  x86 IOMMUs use device
argument.

[akpm@linux-foundation.org: fix sge]
[akpm@linux-foundation.org: fix svc_rdma]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix bnx2x]
[akpm@linux-foundation.org: fix s2io]
[akpm@linux-foundation.org: fix pasemi_mac]
[akpm@linux-foundation.org: fix sdhci]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix sparc]
[akpm@linux-foundation.org: fix ibmvscsi]
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26 12:00:03 -07:00
Jack Morgenstein 51a379d0c8 mlx4: Update/add Mellanox Technologies copyright lines to mlx4 driver files
Update existing Mellanox copyright lines to 2008, and add such lines
to files where they are missing.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-25 10:32:52 -07:00
Faisal Latif 6492cdf3a2 RDMA/nes: CM connection setup/teardown rework
Major rework of CM connection setup/teardown.  We had a number of issues
with MPI applications not starting/terminating properly over time.
With these changes we were able to run longer on larger clusters.

* Remove memory allocation from nes_connect() and nes_cm_connect().
* Fix mini_cm_dec_refcnt_listen() when destroying listener.
* Remove unnecessary code from schedule_nes_timer() and nes_cm_timer_tick().
* Functionalize mini_cm_recv_pkt() and process_packet().
* Clean up cm_node->ref_count usage.
* Reuse skbs if available.

Signed-off-by: Faisal Latif <flatif@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-24 20:50:45 -07:00
Roland Dreier 9905922446 IPoIB: Correct help text for INFINIBAND_IPOIB_DEBUG
The help text for INFINIBAND_IPOIB_DEBUG refers to "ipoib_debugfs,"
which no longer exists.  Correct this to talk about the files under
debugfs that are really created.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-24 20:37:25 -07:00
Roland Dreier 99c3a5a9e3 IPoIB/cm: Connected mode is no longer EXPERIMENTAL
Connected mode is now tested and used by lots of people.  No need to
hide it under CONFIG_EXPERIMENTAL.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-24 20:37:25 -07:00
Roland Dreier 5ba18b186c RDMA/ucm: BKL is not needed for ib_ucm_open()
Remove explicit cycle_kernel_lock() call and document why the code is safe.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-24 20:36:59 -07:00
Roland Dreier f7a6117ee5 RDMA/ucma: BKL is not needed for ucma_open()
Remove explicit lock_kernel() calls and document why the code is safe.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-24 20:36:59 -07:00
Linus Torvalds 5c402355ad Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  MAINTAINERS: Remove Glenn Streiff from NetEffect entry
  mlx4_core: Improve error message when not enough UAR pages are available
  IB/mlx4: Add support for memory management extensions and local DMA L_Key
  IB/mthca: Keep free count for MTT buddy allocator
  mlx4_core: Keep free count for MTT buddy allocator
  mlx4_code: Add missing FW status return code
  IB/mlx4: Rename struct mlx4_lso_seg to mlx4_wqe_lso_seg
  mlx4_core: Add module parameter to enable QoS support
  RDMA/iwcm: Remove IB_ACCESS_LOCAL_WRITE from remote QP attributes
  IPoIB: Include err code in trace message for ib_sa_path_rec_get() failures
  IB/sa_query: Check if sm_ah is NULL in ib_sa_remove_one()
  IB/ehca: Release mutex in error path of alloc_small_queue_page()
  IB/ehca: Use default value for Local CA ACK Delay if FW returns 0
  IB/ehca: Filter PATH_MIG events if QP was never armed
  IB/iser: Add support for RDMA_CM_EVENT_ADDR_CHANGE event
  RDMA/cma: Add RDMA_CM_EVENT_TIMEWAIT_EXIT event
  RDMA/cma: Add RDMA_CM_EVENT_ADDR_CHANGE event
2008-07-24 12:56:07 -07:00
Roland Dreier 2cc177364e Merge branches 'bkl-removal', 'cma', 'ehca', 'for-2.6.27', 'mlx4', 'mthca' and 'nes' into for-linus 2008-07-24 08:38:47 -07:00
Linus Torvalds 26dcce0fab Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
  NR_CPUS: Replace NR_CPUS in speedstep-centrino.c
  cpumask: Provide a generic set of CPUMASK_ALLOC macros, FIXUP
  NR_CPUS: Replace NR_CPUS in cpufreq userspace routines
  NR_CPUS: Replace per_cpu(..., smp_processor_id()) with __get_cpu_var
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genx2apic_uv_x.c
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/proc.c
  NR_CPUS: Replace NR_CPUS in arch/x86/kernel/cpu/mcheck/mce_64.c
  cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c, fix
  cpumask: Use optimized CPUMASK_ALLOC macros in the centrino_target
  cpumask: Provide a generic set of CPUMASK_ALLOC macros
  cpumask: Optimize cpumask_of_cpu in lib/smp_processor_id.c
  cpumask: Optimize cpumask_of_cpu in kernel/time/tick-common.c
  cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c
  cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c
  cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/io_apic_64.c
  cpumask: Replace cpumask_of_cpu with cpumask_of_cpu_ptr
  Revert "cpumask: introduce new APIs"
  cpumask: make for_each_cpu_mask a bit smaller
  net: Pass reference to cpumask variable in net/sunrpc/svc.c
  ...

Fix up trivial conflicts in drivers/cpufreq/cpufreq.c manually
2008-07-23 18:37:44 -07:00
Roland Dreier 95d04f0735 IB/mlx4: Add support for memory management extensions and local DMA L_Key
Add support for the following operations to mlx4 when device firmware
supports them:

 - Send with invalidate and local invalidate send queue work requests;
 - Allocate/free fast register MRs;
 - Allocate/free fast register MR page lists;
 - Fast register MR send queue work requests;
 - Local DMA L_Key.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-23 08:12:26 -07:00
Roland Dreier e8bb4beb2b IB/mthca: Keep free count for MTT buddy allocator
MTT entries are allocated with a buddy allocator, which just keeps
bitmaps for each level of the buddy table.  However, all free space
starts out at the highest order, and small allocations start scanning
from the lowest order.  When the lowest order tables have no free
space, this can lead to scanning potentially millions of bits before
finding a free entry at a higher order.

We can avoid this by just keeping a count of how many free entries
each order has, and skipping the bitmap scan when an order is
completely empty.  This provides a nice performance boost for a
negligible increase in memory usage.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:20:05 -07:00
Roland Dreier 47b374752a IB/mlx4: Rename struct mlx4_lso_seg to mlx4_wqe_lso_seg
Make the struct name consistent with other WQE segment struct types
defined in <linux/mlx4/qp.h>.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:19:39 -07:00
Dotan Barak 1ca8d15619 RDMA/iwcm: Remove IB_ACCESS_LOCAL_WRITE from remote QP attributes
Remove IB_ACCESS_LOCAL_WRITE from qp.qp_access_flags because this
attribute is only used to set remote permissions.

Signed-off-by: Dotan Barak <dotanba@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:18:34 -07:00
Or Gerlitz 01b3fc8b15 IPoIB: Include err code in trace message for ib_sa_path_rec_get() failures
Print the return code of ib_sa_path_rec_get() if it fails to help
debug errors.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:18:34 -07:00
Ralph Campbell 64b784b583 IB/sa_query: Check if sm_ah is NULL in ib_sa_remove_one()
If update_sm_ah() fails, it leaves the port's sm_ah as NULL.  Then if
the device or module is removed, ib_sa_remove_one() will dereference a
NULL pointer when it calls kref_put().  Fix this by testing if sm_ah
is NULL before dropping the reference.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:18:33 -07:00
Julia Lawall 1a867c33bb IB/ehca: Release mutex in error path of alloc_small_queue_page()
The pd->lock mutex is released on a successful return, so it should be
released on an error return as well.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression l;
@@

mutex_lock(l);
... when != mutex_unlock(l)
    when any
    when strict
(
if (...) { ... when != mutex_unlock(l)
+   mutex_unlock(l);
    return ...;
}
|
mutex_unlock(l);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:18:10 -07:00
Joachim Fenkes 593e4d4a05 IB/ehca: Use default value for Local CA ACK Delay if FW returns 0
Some firmware versions report a Local CA ACK Delay of 0.  In that
case, return a more sensible default value of 12 (-> 16 msec) instead.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:18:08 -07:00
Joachim Fenkes 5b673b71c8 IB/ehca: Filter PATH_MIG events if QP was never armed
Certain firmware versions sometimes cause spurious PATH_MIG events to
occur during QP creation.  Filter these events by making sure PATH_MIG
events are only handed down when they actually make sense (i.e. when
the QP has been armed at least once).

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:18:07 -07:00
Or Gerlitz 2f5de15128 IB/iser: Add support for RDMA_CM_EVENT_ADDR_CHANGE event
Enhance iser to act upon notification on network stack changes that
make its RDMA connection unaligned with the link used by the stack for
the <src,dst> IPs used to establish the connection.

When RDMA_CM_EVENT_ADDR_CHANGE arrives, just disconnect the
connection, assuming that the user space iscsid daemon will reconnect,
and the new connection will be aligned with the IP stack.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:16:21 -07:00
Amir Vadai 38ca83a588 RDMA/cma: Add RDMA_CM_EVENT_TIMEWAIT_EXIT event
Consumers that want to re-use their QPs in new connections need to
know when the QP has exited the timewait state.  Report the timewait
event through the rdma_cm.

Signed-off-by: Amir Vadai <amirv@mellanox.co.il>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:14:23 -07:00
Or Gerlitz dd5bdff83b RDMA/cma: Add RDMA_CM_EVENT_ADDR_CHANGE event
Add an RDMA_CM_EVENT_ADDR_CHANGE event can be used by rdma-cm
consumers that wish to have their RDMA sessions always use the same
links (eg <hca/port>) as the IP stack does.  In the current code, this
does not happen when bonding is used and fail-over happened but the IB
link used by an already existing session is operating fine.

Use the netevent notification for sensing that a change has happened
in the IP stack, then scan the rdma-cm ID list to see if there is an
ID that is "misaligned" with respect to the IP stack, and deliver
RDMA_CM_EVENT_ADDR_CHANGE for this ID.  The consumer can act on the
event or just ignore it.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22 14:14:22 -07:00
Greg Kroah-Hartman 110cf374a8 infiniband: make cm_device use a struct device and not a kobject.
This object really should be a struct device, or at least contain a
pointer to a struct device, as it is trying to create a separate device
tree outside of the main device tree.  This patch fixes this problem.

It is needed for the class core rework that is being done in the driver
core.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:49 -07:00
Greg Kroah-Hartman d4c4196f24 infiniband: rename "device" to "ib_device" in cm_device
This pointer really is a struct ib_device, not a struct device, so name
it properly to help prevent confusion.

This makes the followon patch in this series much smaller and easier to
understand as well.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:49 -07:00
Greg Kroah-Hartman c76d3d28c3 device create: infiniband: convert device_create to device_create_drvdata
device_create() is race-prone, so use the race-free
device_create_drvdata() instead as device_create() is going away.

Cc: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-07-21 21:54:43 -07:00
Ingo Molnar eb6a12c242 Merge branch 'linus' into cpus4096-for-linus
Conflicts:

	net/sunrpc/svc.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-21 17:19:50 +02:00
Ingo Molnar bb2c018b09 Merge branch 'linus' into cpus4096
Conflicts:

	drivers/acpi/processor_throttling.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18 22:00:54 +02:00