Commit Graph

2755 Commits

Author SHA1 Message Date
David S. Miller 17f7f4d9fc Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	net/ipv4/fib_frontend.c
2010-12-26 22:37:05 -08:00
Jiri Kosina 4b7bd36470 Merge branch 'master' into for-next
Conflicts:
	MAINTAINERS
	arch/arm/mach-omap2/pm24xx.c
	drivers/scsi/bfa/bfa_fcpim.c

Needed to update to apply fixes for which the old branch was too
outdated.
2010-12-22 18:57:02 +01:00
Dan Carpenter 7182afea8d IB/uverbs: Handle large number of entries in poll CQ
In ib_uverbs_poll_cq() code there is a potential integer overflow if
userspace passes in a large cmd.ne.  The calls to kmalloc() would
allocate smaller buffers than intended, leading to memory corruption.
There iss also an information leak if resp wasn't all used.
Unprivileged userspace may call this function, although only if an
RDMA device that uses this function is present.

Fix this by copying CQ entries one at a time, which avoids the
allocation entirely, and also by moving this copying into a function
that makes sure to initialize all memory copied to userspace.

Special thanks to Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
for his help and advice.

Cc: <stable@kernel.org>
Signed-off-by: Dan Carpenter <error27@gmail.com>

[ Monkey around with things a bit to avoid bad code generation by gcc
  when designated initializers are used.  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-08 15:23:49 -08:00
Linus Torvalds 75318ec327 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: Fix information leak in marshalling code
  IB/pack: Remove some unused code added by the IBoE patches
  IB/mlx4: Fix IBoE link state
  IB/mlx4: Fix IBoE reported link rate
  mlx4_core: Workaround firmware bug in query dev cap
  IB/mlx4: Fix memory ordering of VLAN insertion control bits
  MAINTAINERS: Update NetEffect entry
2010-12-02 12:10:56 -08:00
Roland Dreier 7adce751ce Merge branches 'misc', 'mlx4' and 'nes' into for-next 2010-12-01 16:33:47 -08:00
Vasiliy Kulikov 91a4d157d0 IB: Fix information leak in marshalling code
ib_ucm_init_qp_attr() and ucma_init_qp_attr() pass struct ib_uverbs_qp_attr
with reserved, qp_state, {ah_attr,alt_ah_attr}{reserved,->grh.reserved}
fields uninitialized to copy_to_user().  This leads to leaking of
contents of kernel stack memory to userspace.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01 16:33:18 -08:00
Or Gerlitz f55864a4f4 IB/pack: Remove some unused code added by the IBoE patches
Remove unused functions added by commit ff7f5aab35 ("IB/pack: IBoE UD
packet packing support").

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
2010-12-01 16:30:18 -08:00
Eli Cohen 21d606090e IB/mlx4: Fix IBoE link state
Use netif_running() and netif_carrier_ok() to report link state,
exactly as is done to report Ethernet link state in sysfs.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01 16:11:29 -08:00
Eli Cohen 328266c561 IB/mlx4: Fix IBoE reported link rate
The link rate is the product of the link speed in the link width. For
Etherent ports the rate is 10G, so we use 1 for the width and 4 for
speed to get the correct rate.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01 16:10:35 -08:00
Eli Cohen e27535b9c6 IB/mlx4: Fix memory ordering of VLAN insertion control bits
We must fully update the control segment before marking it as valid,
so that hardware doesn't start executing it before we're ready.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>

[ Move VLAN control bit setting to before wmb().  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01 11:08:54 -08:00
Eric Dumazet 22f4fbd9bd infiniband: remove dev_base_lock use
dev_base_lock is the legacy way to lock the device list, and is planned
to disappear. (writers hold RTNL, readers hold RCU lock)

Convert rdma_translate_ip() and update_ipv6_gids() to RCU locking.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-24 11:41:56 -08:00
Arnd Bergmann 451a3c24b0 BKL: remove extraneous #include <smp_lock.h>
The big kernel lock has been removed from all these files at some point,
leaving only the #include.

Remove this too as a cleanup.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-17 08:59:32 -08:00
Jeff Garzik f281233d3e SCSI host lock push-down
Move the mid-layer's ->queuecommand() invocation from being locked
with the host lock to being unlocked to facilitate speeding up the
critical path for drivers who don't need this lock taken anyway.

The patch below presents a simple SCSI host lock push-down as an
equivalent transformation.  No locking or other behavior should change
with this patch.  All existing bugs and locking orders are preserved.

Additionally, add one parameter to queuecommand,
	struct Scsi_Host *
and remove one parameter from queuecommand,
	void (*done)(struct scsi_cmnd *)

Scsi_Host* is a convenient pointer that most host drivers need anyway,
and 'done' is redundant to struct scsi_cmnd->scsi_done.

Minimal code disturbance was attempted with this change.  Most drivers
needed only two one-line modifications for their host lock push-down.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Acked-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-16 13:33:23 -08:00
Jesper Juhl e987fa357a infiniband: Only include mutex.h once in drivers/infiniband/hw/cxgb4/iw_cxgb4.h
Only include the header linux/mutex.h once inside
drivers/infiniband/hw/cxgb4/iw_cxgb4.h

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-11-15 14:35:19 +01:00
Eric Dumazet 72cdd1d971 net: get rid of rtable->idev
It seems idev field in struct rtable has no special purpose, but adding
extra atomic ops.

We hold refcounts on the device itself (using percpu data, so pretty
cheap in current kernel).

infiniband case is solved using dst.dev instead of idev->dev

Removal of this field means routing without route cache is now using
shared data, percpu data, and only potential contention is a pair of
atomic ops on struct neighbour per forwarded packet.

About 5% speedup on routing test.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-11 10:29:40 -08:00
Uwe Kleine-König b595076a18 tree-wide: fix comment/printk typos
"gadget", "through", "command", "maintain", "maintain", "controller", "address",
"between", "initiali[zs]e", "instead", "function", "select", "already",
"equal", "access", "management", "hierarchy", "registration", "interest",
"relative", "memory", "offset", "already",

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-11-01 15:38:34 -04:00
Al Viro fc14f2fef6 convert get_sb_single() users
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-29 04:16:28 -04:00
Linus Torvalds 426e1f5cec Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)
  split invalidate_inodes()
  fs: skip I_FREEING inodes in writeback_sb_inodes
  fs: fold invalidate_list into invalidate_inodes
  fs: do not drop inode_lock in dispose_list
  fs: inode split IO and LRU lists
  fs: switch bdev inode bdi's correctly
  fs: fix buffer invalidation in invalidate_list
  fsnotify: use dget_parent
  smbfs: use dget_parent
  exportfs: use dget_parent
  fs: use RCU read side protection in d_validate
  fs: clean up dentry lru modification
  fs: split __shrink_dcache_sb
  fs: improve DCACHE_REFERENCED usage
  fs: use percpu counter for nr_dentry and nr_dentry_unused
  fs: simplify __d_free
  fs: take dcache_lock inside __d_path
  fs: do not assign default i_ino in new_inode
  fs: introduce a per-cpu last_ino allocator
  new helper: ihold()
  ...
2010-10-26 17:58:44 -07:00
Linus Torvalds 9e5fca251f 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: (63 commits)
  IB/qib: clean up properly if pci_set_consistent_dma_mask() fails
  IB/qib: Allow driver to load if PCIe AER fails
  IB/qib: Fix uninitialized pointer if CONFIG_PCI_MSI not set
  IB/qib: Fix extra log level in qib_early_err()
  RDMA/cxgb4: Remove unnecessary KERN_<level> use
  RDMA/cxgb3: Remove unnecessary KERN_<level> use
  IB/core: Add link layer type information to sysfs
  IB/mlx4: Add VLAN support for IBoE
  IB/core: Add VLAN support for IBoE
  IB/mlx4: Add support for IBoE
  mlx4_en: Change multicast promiscuous mode to support IBoE
  mlx4_core: Update data structures and constants for IBoE
  mlx4_core: Allow protocol drivers to find corresponding interfaces
  IB/uverbs: Return link layer type to userspace for query port operation
  IB/srp: Sync buffer before posting send
  IB/srp: Use list_first_entry()
  IB/srp: Reduce number of BUSY conditions
  IB/srp: Eliminate two forward declarations
  IB/mlx4: Signal node desc changes to SM by using FW to generate trap 144
  IB: Replace EXTRA_CFLAGS with ccflags-y
  ...
2010-10-26 17:54:22 -07:00
Hagen Paul Pfeifer 732eacc054 replace nested max/min macros with {max,min}3 macro
Use the new {max,min}3 macros to save some cycles and bytes on the stack.
This patch substitutes trivial nested macros with their counterpart.

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
Cc: Joe Perches <joe@perches.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-26 16:52:12 -07:00
Roland Dreier 116e9535fe Merge branches 'amso1100', 'cma', 'cxgb3', 'cxgb4', 'ehca', 'iboe', 'ipoib', 'misc', 'mlx4', 'nes', 'qib' and 'srp' into for-next 2010-10-26 16:09:11 -07:00
Jason Gunthorpe 2ca78d23a7 IB/qib: clean up properly if pci_set_consistent_dma_mask() fails
Clean up properly if pci_set_consistent_dma_mask() fails.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26 16:09:02 -07:00
Ralph Campbell 5d26a1df23 IB/qib: Allow driver to load if PCIe AER fails
Some PCIe root complex chip sets don't support advanced error reporting.
Allow the driver to load OK if pci_enable_pcie_error_reporting() fails.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26 16:09:02 -07:00
Ralph Campbell 9e43e0106d IB/qib: Fix uninitialized pointer if CONFIG_PCI_MSI not set
If CONFIG_PCI_MSI is not set, and a QLE7140 is present, the pointer
"dd" is uninitialized.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26 16:09:02 -07:00
Jason Gunthorpe 82fdb0ab54 IB/qib: Fix extra log level in qib_early_err()
Noticed this odd looking thing in dmesg:

    ib_qib 0000:02:00.0: <3>ib_qib: Unable to enable pcie error reporting: -5

which is due to a bad use of dev_info.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26 16:09:02 -07:00
Joe Perches aa1ad26089 RDMA/cxgb4: Remove unnecessary KERN_<level> use
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26 13:45:59 -07:00
Joe Perches ca7cf94f8b RDMA/cxgb3: Remove unnecessary KERN_<level> use
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26 13:45:49 -07:00
Christoph Hellwig 85fe4025c6 fs: do not assign default i_ino in new_inode
Instead of always assigning an increasing inode number in new_inode
move the call to assign it into those callers that actually need it.
For now callers that need it is estimated conservatively, that is
the call is added to all filesystems that do not assign an i_ino
by themselves.  For a few more filesystems we can avoid assigning
any inode number given that they aren't user visible, and for others
it could be done lazily when an inode number is actually needed,
but that's left for later patches.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-25 21:26:11 -04:00
Eli Cohen 8ad330a002 IB/core: Add link layer type information to sysfs
Since an IB transport port may use either IB or Ethernet as its link layer,
add the file /sys/class/infiniband/<device>/ports/<port_num>/link_layer to
show the link layer for the port.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25 10:20:39 -07:00
Eli Cohen 4c3eb3ca13 IB/mlx4: Add VLAN support for IBoE
This patch allows IBoE traffic to be encapsulated in 802.1Q tagged
VLAN frames.  The VLAN tag is encoded in the GID and derived from it
by a simple computation.

The netdev notifier callback is modified to catch VLAN device
addition/removal and the port's GID table is updated to reflect the
change, so that for each netdevice there is an entry in the GID table.
When the port's GID table is exhausted, GID entries will not be added.
Only children of the main interfaces can add to the GID table; if a
VLAN interface is added on another VLAN interface (e.g. "vconfig add
eth2.6 8"), then that interfaces will not add an entry to the GID
table.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25 10:20:39 -07:00
Eli Cohen af7bd46376 IB/core: Add VLAN support for IBoE
Add 802.1q VLAN support to IBoE. The VLAN tag is encoded within the
GID derived from a link local address in the following way:

    GID[11] GID[12] contain the VLAN ID when the GID contains a VLAN.

The 3 bits user priority field of the packets are identical to the 3
bits of the SL.

In case of rdma_cm apps, the TOS field is used to generate the SL
field by doing a shift right of 5 bits effectively taking to 3 MS bits
of the TOS field.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25 10:20:39 -07:00
Eli Cohen fa417f7b52 IB/mlx4: Add support for IBoE
Add support for IBoE to mlx4_ib.  The bulk of the code is handling the
new address vector fields; mlx4 needs the MAC address of a remote node
to include it in a WQE (for datagrams) or in the QP context (for
connected QPs).  Address resolution is done by assuming all unicast
GIDs are either link-local IPv6 addresses.

Multicast group attach/detach needs to update the NIC's multicast
filters; but since attaching a QP to a multicast group can be done
before the QP is bound to a port, for IBoE we need to keep track of
all multicast groups that a QP is attached too before it transitions
from INIT to RTR (since it does not have a port in the INIT state).

Signed-off-by: Eli Cohen <eli@mellanox.co.il>

[ Many things cleaned up and otherwise monkeyed with; hope I didn't
  introduce too many bugs.  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25 10:20:39 -07:00
Eli Cohen 2420b60b1d IB/uverbs: Return link layer type to userspace for query port operation
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25 10:20:39 -07:00
David Dillow 19081f31ce IB/srp: Sync buffer before posting send
srp_send_tsk_mgmt() was missing the proper DMA sync calls before posting
the buffer to the device.

Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24 22:14:23 -07:00
Bart Van Assche 21c1a90769 IB/srp: Use list_first_entry()
Use the list_first_entry() macro in ib_srp instead of open-coding the equivalent,
which makes the source code slightly more descriptive.  The list_first_entry()
macro itself was introduced in kernel 2.6.22.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24 22:14:19 -07:00
Bart Van Assche 7ade400aba IB/srp: Reduce number of BUSY conditions
As proposed by the SRP (draft) standard, ib_srp reserves one ring
element for SRP_TSK_MGMT requests. This patch makes sure that the SCSI
mid-layer never tries to queue more than (SRP request limit) - 1 SCSI
commands to ib_srp. This improves performance for targets whose request
limit is less than or equal to SRP_NORMAL_REQ_SQ_SIZE by reducing the
number of BUSY responses reported by ib_srp to the SCSI mid-layer.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24 22:14:14 -07:00
David Dillow 05a1d7504f IB/srp: Eliminate two forward declarations
Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24 22:14:08 -07:00
Linus Torvalds 229aebb873 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  Update broken web addresses in arch directory.
  Update broken web addresses in the kernel.
  Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget
  Revert "Fix typo: configuation => configuration" partially
  ida: document IDA_BITMAP_LONGS calculation
  ext2: fix a typo on comment in ext2/inode.c
  drivers/scsi: Remove unnecessary casts of private_data
  drivers/s390: Remove unnecessary casts of private_data
  net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data
  drivers/infiniband: Remove unnecessary casts of private_data
  drivers/gpu/drm: Remove unnecessary casts of private_data
  kernel/pm_qos_params.c: Remove unnecessary casts of private_data
  fs/ecryptfs: Remove unnecessary casts of private_data
  fs/seq_file.c: Remove unnecessary casts of private_data
  arm: uengine.c: remove C99 comments
  arm: scoop.c: remove C99 comments
  Fix typo configue => configure in comments
  Fix typo: configuation => configuration
  Fix typo interrest[ing|ed] => interest[ing|ed]
  Fix various typos of valid in comments
  ...

Fix up trivial conflicts in:
	drivers/char/ipmi/ipmi_si_intf.c
	drivers/usb/gadget/rndis.c
	net/irda/irnet/irnet_ppp.c
2010-10-24 13:41:39 -07:00
Jack Morgenstein d0d68b8693 IB/mlx4: Signal node desc changes to SM by using FW to generate trap 144
The Node Description cannot be changed via MADs (it is read-only).
Until now, it was changed in the driver via sysfs, and the new Node
Description was simply inserted by the driver into MAD responses
(replacing the description returned by FW).

System startup scripts use the sysfs interface to change the node
description at driver startup to show the hostname, etc. However, this
has a race condition: the SM could discover the original FW node
description rather than the system-specific description if it queried the
port before the startup scripts finish running.

For mlx4, we fix this with a new FW command (SET_NODE) that allows
passing the new node description to FW.  When this command is invoked,
FW sends a trap 144 to the SM.  When it gets this trap, the SM can
query the node to obtain the new node description -- thus eliminating
the effects of the race.

This patch simply calls SET_NODE command when a new node description
is entered via sysfs (thus causing trap 144 to be issued by the FW).
We ignore all failures of the SET_NODE command (including those caused
by using a device FW that predates the SET_NODE command), since in
that case things work just as before.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-23 13:53:09 -07:00
matt mooney 7454159d3c IB: Replace EXTRA_CFLAGS with ccflags-y
Signed-off-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-23 13:45:03 -07:00
Steve Wise 97cb7e40c6 RDMA/ucma: Allow tuning the max listen backlog
For iWARP connections, the connect request is carried in a TCP payload
on an already established TCP connection.  So if the ucma's backlog is
full, the connection request is transmitted and acked at the TCP level
by the time the connect request gets dropped in the ucma.  The end
result is the connection gets rejected by the iWARP provider.
Further, a 32 node 256NP OpenMPI job will generate > 128 connect
requests on some ranks.

This patch increases the default max backlog to 1024, and adds a
sysctl variable so the backlog can be adjusted at run time.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-23 13:41:40 -07:00
Eli Cohen c3aa9b186b IPoIB: Set dev_id field of net_device
Use the net device's dev_id field to encode the port number of the pci
device.  This can be used to to associate a net device with the pci
device's port. The encoding is: dev_id = port - 1.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-23 13:35:48 -07:00
Linus Torvalds 5f05647dd8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1699 commits)
  bnx2/bnx2x: Unsupported Ethtool operations should return -EINVAL.
  vlan: Calling vlan_hwaccel_do_receive() is always valid.
  tproxy: use the interface primary IP address as a default value for --on-ip
  tproxy: added IPv6 support to the socket match
  cxgb3: function namespace cleanup
  tproxy: added IPv6 support to the TPROXY target
  tproxy: added IPv6 socket lookup function to nf_tproxy_core
  be2net: Changes to use only priority codes allowed by f/w
  tproxy: allow non-local binds of IPv6 sockets if IP_TRANSPARENT is enabled
  tproxy: added tproxy sockopt interface in the IPV6 layer
  tproxy: added udp6_lib_lookup function
  tproxy: added const specifiers to udp lookup functions
  tproxy: split off ipv6 defragmentation to a separate module
  l2tp: small cleanup
  nf_nat: restrict ICMP translation for embedded header
  can: mcp251x: fix generation of error frames
  can: mcp251x: fix endless loop in interrupt handler if CANINTF_MERRF is set
  can-raw: add msg_flags to distinguish local traffic
  9p: client code cleanup
  rds: make local functions/variables static
  ...

Fix up conflicts in net/core/dev.c, drivers/net/pcmcia/smc91c92_cs.c and
drivers/net/wireless/ath/ath9k/debug.c as per David
2010-10-23 11:47:02 -07:00
David Dillow bb12588a38 IB/srp: Implement SRP_CRED_REQ and SRP_AER_REQ
This patch adds support for SRP_CRED_REQ to avoid a lockup by targets
that use that mechanism to return credits to the initiator. This
prevents a lockup observed in the field where we would never add the
credits from the SRP_CRED_REQ to our current count, and would therefore
never send another command to the target.

Minimal support for SRP_AER_REQ is also added, as these messages can
also be used to convey additional credits to the initiator.

Based upon extensive debugging and code by Bart Van Assche and a bug
report by Chris Worley.

Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-22 22:19:10 -07:00
Bart Van Assche dd5e6e38b2 IB/srp: Preparation for transmit ring response allocation
The transmit ring in ib_srp (srp_target.tx_ring) is currently only used
for allocating requests sent by the initiator to the target. This patch
prepares using that ring for allocation of both requests and responses.
Also, this patch differentiates the uses of SRP_SQ_SIZE, increases the
size of the IB send completion queue by one element and reserves one
transmit ring slot for SRP_TSK_MGMT requests.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: David Dillow <dillowda@ornl.gov>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-22 22:19:10 -07:00
Jason Gunthorpe 5715f5d44b IB/qib: Process RDMA WRITE ONLY with IMMEDIATE properly
See table 35 in IBA - the header order for RDMA_WRITE_ONLY_WITH_IMMEDIATE
and SEND_LAST_WITH_IMMEDIATE is different: the RDMA_WRITE_ONLY has
a RETH header before the immediate data, so we need a different code path
to extract the immediate data.

I tested this with a userspace app that does RDMA_WRITE with immediate
on a QLE7140.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-22 22:12:15 -07:00
Steve Wise b955150ea7 RDMA/cxgb3: When a user QP is marked in error, also mark the CQs in error
The flushing of work requests for user QPs is implemented entirely in
the user mode library.  The only kernel interaction is to mark the
user QP object indicating it is in error when the QP exits RTS.  When
the user QP operations are called by the application (eg: post_send,
post_recv), the QP in error bit is checked and if set, the library
flushes the QP.  If, however, the application is not doing IO, but
rather just polling the CQ, it will never get flushed work requests.
This breaks some classes of applications.

This patch adds logic to mark user CQs in error when a QP that is bound
to the CQ is marked in error.  The library poll code can then notice
the CQ is in error and flush all the in error QPs bound to that CQ.

Design:

 - add 1 extra CQE entry to the CQ memory that will be used to indicate
   in error status.
 - return the desired CQ memory size that should be mapped by the library
 - bump the ABI since the create_cq uverbs response changes.
 - detect older libraries and reduce the mmap size accordingly.
   (The ABI bump doesn't break old libraries, since they didn't check
   the ABI field anyway)

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-22 22:00:53 -07:00
Steve Wise da411ba1da RDMA/cxgb4: Use cxgb4 service for packet gl to skb
Remove the local service t4_pktgl_to_skb() and use cxgb4_pktgl_to_skb()
exported by cxgb4.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-22 21:58:50 -07:00
Steve Wise de5dd81b49 RDMA/cxgb4: Export T4 TCP MIB
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-22 21:57:26 -07:00
Linus Torvalds 092e0e7e52 Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
* 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
  vfs: make no_llseek the default
  vfs: don't use BKL in default_llseek
  llseek: automatically add .llseek fop
  libfs: use generic_file_llseek for simple_attr
  mac80211: disallow seeks in minstrel debug code
  lirc: make chardev nonseekable
  viotape: use noop_llseek
  raw: use explicit llseek file operations
  ibmasmfs: use generic_file_llseek
  spufs: use llseek in all file operations
  arm/omap: use generic_file_llseek in iommu_debug
  lkdtm: use generic_file_llseek in debugfs
  net/wireless: use generic_file_llseek in debugfs
  drm: use noop_llseek
2010-10-22 10:52:56 -07:00
Justin P. Mattock 631dd1a885 Update broken web addresses in the kernel.
The patch below updates broken web addresses in the kernel

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Dimitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Acked-by: Ben Pfaff <blp@cs.stanford.edu>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-10-18 11:03:14 +02:00
Randy Dunlap e00ce92e0b infiniband: fix mlx4 kconfig dependency warning
Fix kconfig dependency warning to satisfy dependencies:

warning: (MLX4_EN && NETDEVICES && NETDEV_10000 && PCI && INET || MLX4_INFINIBAND && INFINIBAND) selects MLX4_CORE which has unmet direct dependencies (NETDEVICES && NETDEV_10000 && PCI)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-16 11:13:25 -07:00
Arnd Bergmann 6038f373a3 llseek: automatically add .llseek fop
All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.

The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.

New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time.  Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.

The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.

Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.

Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.

===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
//   but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{
<+...
nonseekable_open(...)
...+>
}

@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{
<+...
(
nonseekable_open(...)
|
nested_open(...)
)
...+>
}

@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
<+...
(
   *off = E
|
   *off += E
|
   func(..., off, ...)
|
   E = *off
)
...+>
}

@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}

@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
<+...
(
  *off = E
|
  *off += E
|
  func(..., off, ...)
|
  E = *off
)
...+>
}

@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}

@ fops0 @
identifier fops;
@@
struct file_operations fops = {
 ...
};

@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
 .llseek = llseek_f,
...
};

@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
 .read = read_f,
...
};

@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
 .write = write_f,
...
};

@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
 .open = open_f,
...
};

// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
...  .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};

@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
...  .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};

// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
...  .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};

// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};

// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};

@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+	.llseek = default_llseek, /* write accesses f_pos */
};

// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////

@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
 .write = write_f,
 .read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};

@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};

@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};

@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
2010-10-15 15:53:27 +02:00
Eli Cohen ff7f5aab35 IB/pack: IBoE UD packet packing support
Add support for packing IBoE packet headers.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>

[ Clean up and fix ib_ud_header_init() a bit.  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-14 12:41:29 -07:00
Eli Cohen 3c86aa70bf RDMA/cm: Add RDMA CM support for IBoE devices
Add support for IBoE device binding and IP --> GID resolution.  Path
resolving and multicast joining are implemented within cma.c by
filling in the responses and running callbacks in the CMA work queue.

IP --> GID resolution always yields IPv6 link local addresses; remote
GIDs are derived from the destination MAC address of the remote port.
Multicast GIDs are always mapped to multicast MACs as is done in IPv6.
(IPv4 multicast is enabled by translating IPv4 multicast addresses to
IPv6 multicast as described in
<http://www.mail-archive.com/ipng@sunroof.eng.sun.com/msg02134.html>.)

Some helper functions are added to ib_addr.h.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-13 15:46:43 -07:00
Eli Cohen fac70d5191 IB/mad: IBoE supports only QP1 (no QP0)
Since IBoE is using Ethernet as its link layer, there is no central
management entity so there is need for QP0.  QP1 is still needed since
it handles communications between CM agents.  This patch will skip QP0
and create only QP1 for IBoE ports.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-13 09:38:11 -07:00
Eli Cohen 7b4c876961 IPoIB: Skip IBoE ports
IPoIB is IP-over-Infiniband link layer. In the case of IBoE, the link
layer is Ethernet and IP can work directly over Ethernet, so disable
IPoIB for non-IB_LINK_LAYER_INFINIBAND ports.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-13 09:38:11 -07:00
Eric Dumazet 29b4433d99 net: percpu net_device refcount
We tried very hard to remove all possible dev_hold()/dev_put() pairs in
network stack, using RCU conversions.

There is still an unavoidable device refcount change for every dst we
create/destroy, and this can slow down some workloads (routers or some
app servers, mmap af_packet)

We can switch to a percpu refcount implementation, now dynamic per_cpu
infrastructure is mature. On a 64 cpus machine, this consumes 256 bytes
per device.

On x86, dev_hold(dev) code :

before
        lock    incl 0x280(%ebx)
after:
        movl    0x260(%ebx),%eax
        incl    fs:(%eax)

Stress bench :

(Sending 160.000.000 UDP frames,
IP route cache disabled, dual E5540 @2.53GHz,
32bit kernel, FIB_TRIE)

Before:

real    1m1.662s
user    0m14.373s
sys     12m55.960s

After:

real    0m51.179s
user    0m15.329s
sys     10m15.942s

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-12 12:35:25 -07:00
Animesh K Trivedi 26012f0750 RDMA/iwcm: Fix hang in uninterruptible wait on cm_id destroy
A process can get stuck in an uninterruptible wait in the
kernel while destroying a cm_id when iw_cm_connect() fails:

For example, When creation of a PD fails but the user continues with
an attempt to connect to the server without checking the return value,
in iw_cm_connect() a NULL qp is found so the call fails.  However the
IWCM_F_CONNECT_WAIT bit is not cleared.  destroy_cm_id() then waits
forever for IWCM_F_CONNECT_WAIT to be cleared.

The same problem exists on the passive side with the accept call.

Fix this by clearing the bit and waking up any waiters in the
appropriate spots.

Signed-off-by: Animesh Trivedi <atr@zurich.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-11 20:24:04 -07:00
Steve Wise 3160977a6e RDMA/cxgb4: Use simple_read_from_buffer() for debugfs handlers
We can replace our equivalent open-coded version.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-11 20:15:14 -07:00
Steve Wise 8bbac892fb RDMA/cxgb4: Add default_llseek to debugfs files
Incorporate BKL removal changes.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-11 20:14:00 -07:00
Eli Cohen 5a0fd09428 IB/mlx4: Limit size of fast registration WRs
Fix the limit on the size of max fast registration WRs that can be
posted to match hardware capabilities.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-11 14:33:17 -07:00
Joe Perches 0f2f930a67 IB/qib: Remove unnecessary casts of private_data
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-06 14:43:51 -07:00
Maciej Sosnowski 52106bd24c RDMA/nes: Turn carrier off on ifdown
This lets the bonding driver to detect when an interface goes down.

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-06 14:42:32 -07:00
Chien Tung 2932772156 RDMA/nes: Report correct port state if interface is down
With commit cd6860eb ("RDMA/nes: Fix hangs on ifdown") we no longer
remove nes interfaces on ifdown.  On nes_query_port(), add an
additional check of the netdev queue and report IB_PORT_DOWN if the
queue is not running.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-06 12:59:56 -07:00
Sonny Rao 625fbd3a36 IB/ehca: Fix driver on relocatable kernel
the eHCA driver registers a MR for all of kernel memory, but makes the
assumption that valid memory exists at KERNELBASE.  This assumption
may not be true in the case of a relocatable kernel, so use KERNELBASE
+ PHYSICAL_START to get the true beginning of usable kernel memory.

cc: Joachim Fenkes <fenkes@de.ibm.com>
cc: Christoph Raisch <raisch@de.ibm.com>
cc: Hoan-Ham Hguyen <hnguyen@de.ibm.com>
Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-06 12:57:07 -07:00
Thomas Gleixner 557d0540b9 IB/umad: Make user_mad semaphore a real one
Get rid of init_MUTEX[_LOCKED]() and use sema_init() instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 20:52:21 -07:00
Joe Perches fc4ec9bd82 RDMA/amso1100: Remove KERN_<level> from pr_<level> use
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 20:51:20 -07:00
Dan Carpenter 4d8d6389b2 RDMA/nes: Remove unneeded variable
Just a small cleanup.  The "passive_state" variable isn't used any
more after commit dae58728dc ("RDMA/nes: Fix double CLOSE event
indication crash")

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 20:50:07 -07:00
Christoph Lameter fed1db33fe IPoIB: Set pkt_type correctly for multicast packets (fix IGMP breakage)
IGMP processing is broken because the IPOIB does not set the
skb->pkt_type the right way for multicast traffic.  All incoming
packets are set to PACKET_HOST which means that igmp_recv() will
ignore the IGMP broadcasts/multicasts.

This in turn means that the IGMP timers are firing and are sending
information about multicast subscriptions unnecessarily.  In a large
private network this can cause traffic spikes.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 11:09:23 -07:00
Steve Wise 40dbf6ee38 RDMA/cxgb4: Fastreg NSMR fixes
- Remove dsgl support - doesn't work in T4.
- Wrap the immediate PBL as needed when building it in the wr.
- Adjust max pbl depth allowed based on ulptx alignment requirements.
- Bump the slots per SQ to 5 to allow up to 128MB fast registers.
- Advertise fastreg support by default.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:53:50 -07:00
Steve Wise 410ade4c26 RDMA/cxgb4: Don't set completion flag for read requests
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:53:49 -07:00
Steve Wise 98ae68b7ee RDMA/cxgb4: Set the default TCP send window to 128KB
This helps with large IO throughput.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:53:48 -07:00
Steve Wise 2f5b48c3ad RDMA/cxgb4: Use a mutex for QP and EP state transitions
Move the connection setup/teardown paths to the workq thread removing
spin lock/irq disable requirements for these paths.  This allows calls
down to the LLD for EP and QP state transition actions to be atomic
with respect to processing CPL messages coming up from the HW.
Namely, calls to rdma_init() and rdma_fini() can now be called with
the mutex held avoiding many race conditions with the abort path.

The QP spinlock is still used but only to manipulate the qp state.  This
allows the fastpaths, poll, post_send, and pos_recv, to run in the
irq context.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:53:48 -07:00
Steve Wise c6d7b26791 RDMA/cxgb4: Support on-chip SQs
T4 support on-chip SQs to reduce latency.  This patch adds support for
this in iw_cxgb4:

 - Manage ocqp memory like other adapter mem resources.
 - Allocate user mode SQs from ocqp mem if available.
 - Map ocqp mem to user process using write combining.
 - Map PCIE_MA_SYNC reg to user process.

Bump uverbs ABI.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:35 -07:00
Steve Wise aadc4df308 RDMA/cxgb4: Centralize the wait logic
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:34 -07:00
Steve Wise 9e8d1fa342 RDMA/cxgb4: debugfs files for dumping active stags
Add "stags" debugfs file.  This is useful for examining the TPTE and
PBL entries in adapter memory.  It allows scripts to dump just the
active entries.

Also clean up the "qps" file handlers and shared common code.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:33 -07:00
Steve Wise 05fb962947 RDMA/cxgb4: Log HW lack-of-resource errors
This helps debug cases where HW resources are depleted.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:33 -07:00
Steve Wise 0e42c1f430 RDMA/cxgb4: Handle CPL_RDMA_TERMINATE messages
T4 FW sends up CPL_RDMA_TERMINATE to indicate a peer TERM.  This
triggers the QP moving to TERMINATE state.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:32 -07:00
Steve Wise 6ff0e343b3 RDMA/cxgb4: Ignore TERMINATE CQEs
T4 incorrectly inserts TERM CQEs into the CQ.  Silently ignore them.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:31 -07:00
Steve Wise 7459486133 RDMA/cxgb4: Ignore positive return values from cxgb4_*_send() functions
The cxgb4_*_send() functions return NET_XMIT_ values, which are
positive integers or negative errno values.  So don't treat positive
return values as an error.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:31 -07:00
Steve Wise 13fecb83b4 RDMA/cxgb4: Zero out ISGL padding
The HW design requires zeroing any pad in SGLs.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:30 -07:00
Steve Wise af93fb5dcc RDMA/cxgb4: Don't use null ep ptr
In c4iw_modify_qp() error path, only use qhp->ep if ep is not already set.
Otherwise qhp->ep can be NULL and we crash.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-28 10:46:29 -07:00
Roland Dreier 183ae74bda RDMA/nes: Fix cast-to-pointer warnings on 32-bit
Fix:

  drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_alloc_fast_reg_page_list':
  drivers/infiniband/hw/nes/nes_verbs.c:477: warning: cast to pointer from integer of different size
  drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_post_send':
  drivers/infiniband/hw/nes/nes_verbs.c:3486: warning: cast to pointer from integer of different size
  drivers/infiniband/hw/nes/nes_verbs.c:3486: warning: cast to pointer from integer of different size

by printing u64 quantities by casting to unsigned long and long and
using %llx, rather than casting to void* and using %p.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27 17:51:33 -07:00
Eli Cohen a3f5adaf49 IB/core: Add link layer property to ports
This patch allows ports to have different link layers:
IB_LINK_LAYER_INFINIBAND or IB_LINK_LAYER_ETHERNET.  This is required
for adding IBoE (InfiniBand-over-Ethernet, aka RoCE) support.  For
devices that do not provide an implementation for querying the link
layer property of a port, we return a default value based on the
transport: RMA_TRANSPORT_IB nodes will return IB_LINK_LAYER_INFINIBAND
and RDMA_TRANSPORT_IWARP nodes will return IB_LINK_LAYER_ETHERNET.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27 17:51:10 -07:00
Roland Dreier c8e081a1bf RDMA/cxgb4: Fix warnings about casts to/from pointers of different sizes
Fix:

  drivers/infiniband/hw/cxgb4/qp.c: In function ‘create_qp’:
  drivers/infiniband/hw/cxgb4/qp.c:147: warning: cast from pointer to integer of different size
  drivers/infiniband/hw/cxgb4/qp.c: In function ‘rdma_fini’:
  drivers/infiniband/hw/cxgb4/qp.c:988: warning: cast from pointer to integer of different size
  drivers/infiniband/hw/cxgb4/qp.c: In function ‘rdma_init’:
  drivers/infiniband/hw/cxgb4/qp.c:1063: warning: cast from pointer to integer of different size
  drivers/infiniband/hw/cxgb4/mem.c: In function ‘write_adapter_mem’:
  drivers/infiniband/hw/cxgb4/mem.c:74: warning: cast from pointer to integer of different size
  drivers/infiniband/hw/cxgb4/cq.c: In function ‘destroy_cq’:
  drivers/infiniband/hw/cxgb4/cq.c:58: warning: cast from pointer to integer of different size
  drivers/infiniband/hw/cxgb4/cq.c: In function ‘create_cq’:
  drivers/infiniband/hw/cxgb4/cq.c:135: warning: cast from pointer to integer of different size
  drivers/infiniband/hw/cxgb4/cm.c: In function ‘fw6_msg’:
  drivers/infiniband/hw/cxgb4/cm.c:2326: warning: cast to pointer from integer of different size

by casting pointers to unsigned long instead of u64.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27 17:51:04 -07:00
Steve Wise bec658ff31 RDMA/cxgb3: Turn off RX coalescing for iWARP connections
The HW by default has RX coalescing on.  For iWARP connections, this
causes a 100ms delay in connection establishement due to the ingress
MPA Start message being stalled in HW.  So explicitly turn RX
coalescing off when setting up iWARP connections.

This was causing very bad performance for NP64 gather operations using
Open MPI, due to the way it sets up connections on larger jobs.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-27 09:28:55 -07:00
Joe Perches ea3f0e6bc5 drivers/infiniband: Remove unnecessary casts of private_data
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-23 13:38:28 +02:00
Roland Dreier 17859d07c8 Merge branches 'cxgb3' and 'nes' into for-linus 2010-09-08 14:43:28 -07:00
Faisal Latif 29da03b9d1 RDMA/nes: Fix hang with modified FIN handling on A0 cards
Changing state to CLOSING when FIN is received causes A0 cards to
hang.  Fix this by checking for A0 cards in FIN handling.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-08 14:38:23 -07:00
Faisal Latif 67d7072115 RDMA/nes: Change state to closing after FIN
When the driver receives an AE for FIN received, it closes the
connection without changing the state of the connection in the
hardware to closing.  By changing the state to closing, hardware will
do a normal close sequence.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-08 14:38:04 -07:00
Faisal Latif dae58728dc RDMA/nes: Fix double CLOSE event indication crash
During a stress testing in a large cluster, multiple close event are
detected and BUG() is hit in the iWARP core.  The cause is that the
active node gave up while waiting for an MPA response from the peer
and tried to close the connection by sending RST.  The passive node
driver receives the RST but is waiting for MPA response from the user.
When the MPA accept is received, the driver offloads the connection
and sends a CLOSE event.  The driver gets an AE indicating RESET
received and also sends a CLOSE event, hitting a BUG().

Fix this by correcting RESET handling and sending CLOSE events.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-08 14:35:48 -07:00
Chien Tung 70c9db0fdf RDMA/nes: Write correct register write to set TX pause param
Setting TX pause param writes to the wrong register location causing
the adapter to hang.  Correct the define used to write the reigster.

Addresses: https://bugs.openfabrics.org/show_bug.cgi?id=2116
Reported-by: Shiri Franchi <shirif@voltaire.com>
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-08 14:29:19 -07:00
Steve Wise dc4e96ce2d RDMA/cxgb3: Don't exceed the max HW CQ depth
The max depth supported by T3 is 64K entries.  This fixes a bug
introduced in commit 9918b28d ("RDMA/cxgb3: Increase the max CQ
depth") that causes stalls and possibly crashes in large MPI clusters.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-09-02 14:52:21 -07:00
Linus Torvalds 58d4ea65b9 Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  mmc_spi: Fix unterminated of_match_table
  of/sparc: fix build regression from of_device changes
  of/device: Replace struct of_device with struct platform_device
2010-08-12 09:11:31 -07:00
Steve Wise 93fb72e443 RDMA/cxgb4: Obtain RDMA QID ranges from LLD/FW
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-07 23:08:47 -07:00
Linus Torvalds 3cc08fc35d 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: (42 commits)
  IB/qib: Add missing <linux/slab.h> include
  IB/ehca: Drop unnecessary NULL test
  RDMA/nes: Fix confusing if statement indentation
  IB/ehca: Init irq tasklet before irq can happen
  RDMA/nes: Fix misindented code
  RDMA/nes: Fix showing wqm_quanta
  RDMA/nes: Get rid of "set but not used" variables
  RDMA/nes: Read firmware version from correct place
  IB/srp: Export req_lim via sysfs
  IB/srp: Make receive buffer handling more robust
  IB/srp: Use print_hex_dump()
  IB: Rename RAW_ETY to RAW_ETHERTYPE
  RDMA/nes: Fix two sparse warnings
  RDMA/cxgb3: Make needlessly global iwch_l2t_send() static
  IB/iser: Make needlessly global iser_alloc_rx_descriptors() static
  RDMA/cxgb4: Add timeouts when waiting for FW responses
  IB/qib: Fix race between qib_error_qp() and receive packet processing
  IB/qib: Limit the number of packets processed per interrupt
  IB/qib: Allow writes to the diag_counters to be able to clear them
  IB/qib: Set cfgctxts to number of CPUs by default
  ...
2010-08-07 17:08:02 -07:00
Grant Likely 2dc1158137 of/device: Replace struct of_device with struct platform_device
of_device is just an alias for platform_device, so remove it entirely.  Also
replace to_of_device() with to_platform_device() and update comment blocks.

This patch was initially generated from the following semantic patch, and then
edited by hand to pick up the bits that coccinelle didn't catch.

@@
@@
-struct of_device
+struct platform_device

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: David S. Miller <davem@davemloft.net>
2010-08-06 09:25:50 -06:00
Roland Dreier 03b37ecdb3 Merge branches 'cxgb3', 'cxgb4', 'ehca', 'ipath', 'misc', 'nes', 'qib' and 'srp' into for-next 2010-08-05 14:27:14 -07:00
David Miller ba818afdc6 IB/qib: Add missing <linux/slab.h> include
Fix build failure on sparc64 which is missing the include of
<linux/slab.h> via <asm/pci.h> that x86, powerpc, ia64, etc. have.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-05 14:26:58 -07:00
Julia Lawall 2db0032181 IB/ehca: Drop unnecessary NULL test
list_for_each_entry binds its first argument to a non-null value, and thus
any null test on the value of that argument is superfluous.

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

// <smpl>
@@
iterator I;
expression x;
statement S,S1,S2;
@@

I(x,...) { <...
- if (x == NULL && ...) S
  ...> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-05 14:24:55 -07:00
Roland Dreier 817979ac45 RDMA/nes: Fix confusing if statement indentation
Fix confusing indentation that makes a statement look as if it's part of
an if statement when in fact it isn't.

Reported-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-05 14:21:31 -07:00
Alexander Schmidt bd5d0ccbef IB/ehca: Init irq tasklet before irq can happen
Initialize tasklet before interrupts are requested to prevent
scheduling of an uninitialized tasklet.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 16:14:33 -07:00
Linus Torvalds 3cfc2c42c1 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (48 commits)
  Documentation: update broken web addresses.
  fix comment typo "choosed" -> "chosen"
  hostap:hostap_hw.c Fix typo in comment
  Fix spelling contorller -> controller in comments
  Kconfig.debug: FAIL_IO_TIMEOUT: typo Faul -> Fault
  fs/Kconfig: Fix typo Userpace -> Userspace
  Removing dead MACH_U300_BS26
  drivers/infiniband: Remove unnecessary casts of private_data
  fs/ocfs2: Remove unnecessary casts of private_data
  libfc: use ARRAY_SIZE
  scsi: bfa: use ARRAY_SIZE
  drm: i915: use ARRAY_SIZE
  drm: drm_edid: use ARRAY_SIZE
  synclink: use ARRAY_SIZE
  block: cciss: use ARRAY_SIZE
  comment typo fixes: charater => character
  fix comment typos concerning "challenge"
  arm: plat-spear: fix typo in kerneldoc
  reiserfs: typo comment fix
  update email address
  ...
2010-08-04 15:31:02 -07:00
Roland Dreier b2a899eaf3 RDMA/nes: Fix misindented code
In nes_probe(), a bit of code is indented one tab stop too far.  Fix this.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 14:29:31 -07:00
Roland Dreier df924f833c RDMA/nes: Fix showing wqm_quanta
In nes_show_wqm_quanta(), the wrong value is printed.  Fix this.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 14:27:01 -07:00
Roland Dreier 69d5102383 RDMA/nes: Get rid of "set but not used" variables
Delete dead code in various places that is shown by gcc 4.6's new
-Wunused-but-set-variable warnings.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 14:25:40 -07:00
Miroslaw Walukiewicz ff0380ce39 RDMA/nes: Read firmware version from correct place
Signed-off-by: Mirek Walukiewicz <miroslaw.walukiewicz@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 13:22:28 -07:00
Bart Van Assche 89de74866b IB/srp: Export req_lim via sysfs
Export req_lim via sysfs for debugging.

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Acked-by: David Dillow <dave@thedillows.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 13:02:26 -07:00
Linus Torvalds 6ba74014c1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits)
  phy/marvell: add 88ec048 support
  igb: Program MDICNFG register prior to PHY init
  e1000e: correct MAC-PHY interconnect register offset for 82579
  hso: Add new product ID
  can: Add driver for esd CAN-USB/2 device
  l2tp: fix export of header file for userspace
  can-raw: Fix skb_orphan_try handling
  Revert "net: remove zap_completion_queue"
  net: cleanup inclusion
  phy/marvell: add 88e1121 interface mode support
  u32: negative offset fix
  net: Fix a typo from "dev" to "ndev"
  igb: Use irq_synchronize per vector when using MSI-X
  ixgbevf: fix null pointer dereference due to filter being set for VLAN 0
  e1000e: Fix irq_synchronize in MSI-X case
  e1000e: register pm_qos request on hardware activation
  ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice
  net: Add getsockopt support for TCP thin-streams
  cxgb4: update driver version
  cxgb4: add new PCI IDs
  ...

Manually fix up conflicts in:
 - drivers/net/e1000e/netdev.c: due to pm_qos registration
   infrastructure changes
 - drivers/net/phy/marvell.c: conflict between adding 88ec048 support
   and cleaning up the IDs
 - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req
   conflict (registration change vs marking it static)
2010-08-04 11:47:58 -07:00
Bart Van Assche c996bb47bb IB/srp: Make receive buffer handling more robust
The current strategy in ib_srp for posting receive buffers is:

 * Post one buffer after channel establishment.
 * Post one buffer before sending an SRP_CMD or SRP_TSK_MGMT to the target.

As a result, only the first non-SRP_RSP information unit from the
target will be processed.  If that first information unit is an
SRP_T_LOGOUT, it will be processed.  On the other hand, if the
initiator receives an SRP_CRED_REQ or SRP_AER_REQ before it receives a
SRP_T_LOGOUT, the SRP_T_LOGOUT won't be processed.

We can fix this inconsistency by changing the strategy for posting
receive buffers to:

 * Post all receive buffers after channel establishment.
 * After a receive buffer has been consumed and processed, post it again.

A side effect is that the ib_post_recv() call is moved out of the SCSI
command processing path.  Since __srp_post_recv() is not called
directly any more, get rid of it and move the code directly into
srp_post_recv().  Also, move srp_post_recv() up in the file to avoid a
forward declaration.

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Acked-by: David Dillow <dave@thedillows.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 11:47:39 -07:00
Bart Van Assche 7a7008110b IB/srp: Use print_hex_dump()
Replace an open-coded dump of the receive buffer with a call to
print_hex_dump().

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 11:24:12 -07:00
Aleksey Senin a2ebf07ae5 IB: Rename RAW_ETY to RAW_ETHERTYPE
Change abbreviated IB_QPT_RAW_ETY to IB_QPT_RAW_ETHERTYPE to make
the special QP type easier to understand.

cf http://www.mail-archive.com/linux-rdma@vger.kernel.org/msg04530.html

Signed-off-by: Aleksey Senin <alekseys@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 10:44:19 -07:00
Or Gerlitz 812d867221 RDMA/nes: Fix two sparse warnings
Simple changes to fix warnings:

      CHECK   drivers/infiniband/hw/nes/nes_verbs.c
    nes_verbs.c:1944:45: warning: Using plain integer as NULL pointer
    nes_verbs.c:1944:48: warning: Using plain integer as NULL pointer
      CHECK   drivers/infiniband/hw/nes/nes_cm.c
    nes_cm.c:2645:43: warning: mixing different enum types
    nes_cm.c:2645:43:     int enum iw_cm_event_type  versus
    nes_cm.c:2645:43:     int enum iw_cm_event_status

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Acked-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 10:00:34 -07:00
Or Gerlitz 18199f573e RDMA/cxgb3: Make needlessly global iwch_l2t_send() static
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 09:57:01 -07:00
Or Gerlitz 48d8fcebb7 IB/iser: Make needlessly global iser_alloc_rx_descriptors() static
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 09:54:55 -07:00
Steve Wise a5f4a07820 RDMA/cxgb4: Add timeouts when waiting for FW responses
Don't hang a host thread if the FW stops responding.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-04 09:54:42 -07:00
Jiri Kosina d790d4d583 Merge branch 'master' into for-next 2010-08-04 15:14:38 +02:00
Ralph Campbell a5210c12b7 IB/qib: Fix race between qib_error_qp() and receive packet processing
When transitioning a QP to the error state, in progress RWQEs need to
be marked complete.  This also involves releasing the reference count
to the memory regions referenced in the SGEs.  The locking in the
receive packet processing wasn't sufficient to prevent qib_error_qp()
from modifying the r_sge state at the same time, thus leading to
kernel panics.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-03 13:59:47 -07:00
Ralph Campbell 3e3aed0b88 IB/qib: Limit the number of packets processed per interrupt
Don't processes too many packets without allowing other IRQ functions
a chance to run. Otherwise, there is a chance of getting a "soft
lockup" messages and poor application response times.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-03 13:59:25 -07:00
Ira Weiny 4c6931f5d4 IB/qib: Allow writes to the diag_counters to be able to clear them
Signed-off-by: Ira Weiny <weiny2@llnl.gov>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-03 13:59:19 -07:00
Ralph Campbell 0502f94c62 IB/qib: Set cfgctxts to number of CPUs by default
Up to now, we have set the number of available user contexts based on
the number of hardware contexts which is set according to the number
of available CPUs.  This was fine since most CPUs had a power of two
number of cores and the chip supported 4, 8, or 16 user contexts.  Now
that some systems have 12 cores, the default isn't optimal and should
be set to 12 even though 16 hardware contexts need to be enabled.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-03 13:59:05 -07:00
Steve Wise ca5a22028d RDMA/cxgb4: Set/reset the EP timer inside EP lock
Endpoint timer manipulation needs to be done inside the lock.  Otherwise
we can get into a situation where a timer is stopped before it is started,
which hits the WARN_ON() in stop_ep_timer().

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-02 21:06:17 -07:00
Steve Wise d4f1a5c6ef RDMA/cxgb4: Use correct control txq
There is only one control txq per tx channel.  So use the port number
as the queue index when sending.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-02 21:06:12 -07:00
Steve Wise 73d6fcad2a RDMA/cxgb4: Fix race in fini path
There exists a race condition where the app disconnects, which
initiates an orderly close (via rdma_fini()), concurrently with an
ingress abort condition, which initiates an abortive close operation.
Since rdma_fini() must be called without IRQs disabled, the fini can
be called after the QP has been transitioned to ERROR.  This is ok,
but we need to protect against qp->ep getting NULLed.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-08-02 21:06:06 -07:00
Sean Hefty 50a025c69e IB/cm: Check LAP state before sending an MRA
NULL pointer dereferences in ib_cm_init_qp_attr() were seen by some
users.  From a crash dump, I determined that we died in
cm_init_qp_rts_attr() (it's inlined, so it doesn't show up in the
traceback) on the line labeled below:

static int cm_init_qp_rts_attr(struct cm_id_private *cm_id_priv,
                               struct ib_qp_attr *qp_attr,
                               int *qp_attr_mask)
{
        ........
        if (cm_id_priv->id.lap_state == IB_CM_LAP_UNINIT) {
                .....
        } else {
               *qp_attr_mask = IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE;
               qp_attr->alt_port_num = cm_id_priv->alt_av.port->port_num; <-die


The problem is that the rdma_cm can call ib_send_cm_mra() after a
connection has been established.  The ib_cm incorrectly assumes that
the MRA is in response to a LAP (load alternate path) message, even
though no LAP message has been received.  The ib_cm needs to check the
lap_state before sending an MRA if the cm_id state is established.

Reported-by: Arthur Kepner <akepner@sgi.com>
Reported-by: Josh England <jjengla@gmail.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-28 15:18:24 -07:00
Faisal Latif cd6860eb03 RDMA/nes: Fix hangs on ifdown
When ib_unregister_device() is called from netdev stop during ifdown,
it sometimes hangs. Changes made to indicate port_err to ib_dispatch_event()
during netdev stop and port_active during netdev open. The
ib_unregister_device() is only called during remove of the module.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-28 15:14:27 -07:00
Chien Tung 0eec495ee6 RDMA/nes: Store and print eeprom version
Read and print eeprom version and save it off for later use.
Also delete a tab.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-28 15:12:38 -07:00
Peter Huewe 33085bb8da RDMA/nes: Convert pci_table entries to PCI_VDEVICE
This patch converts pci_table entries, where .subvendor=PCI_ANY_ID and
.subdevice=PCI_ANY_ID, .class=0 and .class_mask=0, to use the
PCI_VDEVICE macro, and thus improves readability.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-28 10:39:33 -07:00
Alexander Schmidt e675b6db12 IB/ehca: Catch failing ioremap()
When ioremap() fails with a NULL pointer, catch the error and pass it
to the caller of create_qp() or create_cq() instead of trying to
dereference the NULL pointer later on.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 12:46:29 -07:00
Dave Olson bdf8edcb57 IB/qib: Allow PSM to select from multiple port assignment algorithms
We used to allow only full specification, or using all contexts within
an HCA before moving to the next HCA.  We now allow an additional
method -- round-robining through HCAs -- and make that the default.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 11:39:36 -07:00
Ralph Campbell 2d978a953b IB/qib: Turn off IB latency mode
Turn off IB latency mode. This improves link quality for slower
process chips.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 11:39:31 -07:00
Arnd Bergmann dd378c2102 IB/qib: Use generic_file_llseek
When the default llseek action gets changed to no_llseek, all file
systems relying on the current behaviour need to set explicit .llseek
operations.

In case of qib_fs, we want the files to be seekable, so
generic_file_llseek fits best.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 11:39:27 -07:00
Steve Wise d37ac31ddc RDMA/cxgb4: Support variable sized work requests
T4 EQ entries are in multiples of 64 bytes.  Currently the RDMA SQ and
RQ use fixed sized entries composed of 4 EQ entries for the SQ and 2
EQ entries for the RQ.  For optimial latency with small IO, we need to
change this so the HW only needs to DMA the EQ entries actually used
by a given work request.

Implementation:

- add wq_pidx counter to track where we are in the EQ.  cidx/pidx are
  used for the sw sq/rq tracking and flow control.

- the variable part of work requests is the SGL.  Add new functions to
  build the SGL and/or immediate data directly in the EQ memory
  wrapping when needed.

- adjust the min burst size for the EQ contexts to 64B.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 11:16:20 -07:00
Dan Carpenter 3d4f9a28e0 RDMA/cxgb3: Clean up signed check of unsigned variable
Q_FREECNT() returns the number of spaces free.  This should never be a
negative amount.  Also the num_wrs is an unsigned int so it can never
be less than zero.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 10:57:25 -07:00
David Rientjes d3c814e8b2 RDMA/cxgb4: Remove dependency on __GFP_NOFAIL
The alloc_skb() in various allocations are failable, so remove
__GFP_NOFAIL from their masks.

Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 10:55:05 -07:00
Steve Wise ba6d39256b RDMA/cxgb4: Add module option to tweak delayed ack
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 10:53:52 -07:00
Ben Hutchings dccb816de3 IB/ipath: Fix probe failure path
The failure path in ipath_init_one() does not match the cleanup code
in ipath_remove_one() and appears to leave interrupts enabled in some
cases.  Change it to match.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-21 10:48:39 -07:00
Joe Perches 78e2c6415a drivers/infiniband: Remove unnecessary casts of private_data
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-07-20 17:23:32 +02:00
Alexander Schmidt 91fb0dd9cb IB/ehca: Fix bitmask handling for lock_hcalls
Fix reading hcall locking capability bit from device capabilities.

Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-19 13:23:32 -07:00
Ralph Campbell cc323b2aaa IB/qib: Avoid variable-length array
Rather than use a variable size array allocation on the stack,
define a constant for the maximum array size possible.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-19 13:21:24 -07:00
Roland Dreier 85963e4cbc RDMA/cxgb4: Remove unneeded NULL check
The rest of the code seems to assume that ep->com.cm_id can't be NULL,
so remove an unneeded test.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-19 13:13:09 -07:00
Dan Carpenter c1d7356c85 RDMA/cxgb4: Remove unneeded assignment
We don't need to assign rpl here, we do that later on.

Signed-off-by: Dan Carpenter <error27@gmail.com>

[ Indeed this assignment makes no sense, since skb is set to NULL a
  couple of lines before.  - Roland ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-19 13:09:40 -07:00
Roland Dreier ea9f3bc6d1 RDMA/nes: Rewrite expression to avoid undefined semantics
Change code like

	x = expr(++x)

that assigns to x twice without a sequence point in between to the
intended (and well-defined)

	x = expr(x + 1)

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-14 13:29:21 -07:00
Roland Dreier f400e5b38a IB/umad: Remove unused-but-set variable 'already_dead'
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-14 13:25:04 -07:00
Ben Hutchings ecd4b48a16 IB/qib: Use request_firmware() to load SD7220 firmware
Extract the microcode for the QLogic QLE7220 series IB HCA and use the
kernel microcode request facility to load the microcode.  This
supports Debian Linux's requirements to separate microcode which
doesn't have open source code available from the device driver.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-08 13:27:05 -07:00
Linus Torvalds e467e104bb 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:
  IPoIB: Fix world-writable child interface control sysfs attributes
  IB/qib: Clean up properly if qib_init() fails
  IB/qib: Completion queue callback needs to be single threaded
  IB/qib: Update 7322 serdes tables
  IB/qib: Clear 6120 hardware error register
  IB/qib: Clear eager buffer memory for each new process
  IB/qib: Mask hardware error during link reset
  IB/qib: Don't mark VL15 bufs as WC to avoid a rare 7322 chip problem
  RDMA/cxgb4: Derive smac_idx from port viid
  RDMA/cxgb4: Avoid false GTS CIDX_INC overflows
  RDMA/cxgb4: Don't call abort_connection() for active connect failures
  RDMA/cxgb4: Use the DMA state API instead of the pci equivalents
2010-07-08 12:20:54 -07:00
Roland Dreier 9e770044a0 Merge branches 'cxgb4', 'ipoib' and 'qib' into for-next 2010-07-08 09:10:24 -07:00
Or Gerlitz 7a52b34b07 IPoIB: Fix world-writable child interface control sysfs attributes
Sumeet Lahorani <sumeet.lahorani@oracle.com> reported that the IPoIB
child entries are world-writable; however we don't want ordinary users
to be able to create and destroy child interfaces, so fix them to be
writable only by root.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:23:22 -07:00
Ralph Campbell 756a33b8dc IB/qib: Clean up properly if qib_init() fails
If qib_init() fails, the driver fails to free memory, unregister
device files, and unregister with the PCIe framework. The driver will
unload without error but a subsequent driver load will cause the
system to panic.  This was found by changing the 7220 code to load the
serdes microcode separately and not installing the microcode file.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:14:04 -07:00
Ralph Campbell 950aff5394 IB/qib: Completion queue callback needs to be single threaded
Workqueues aren't exactly equivalent to tasklets since the callback
function may be called from multiple CPUs before the callback returns.
This causes completion notification callbacks to have MT bugs since
they weren't expecting this behavior. The fix is to use a single
threaded work queue.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:13:58 -07:00
Ralph Campbell 7c7a416ef8 IB/qib: Update 7322 serdes tables
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:13:46 -07:00
Ralph Campbell 2d757a7ce0 IB/qib: Clear 6120 hardware error register
The hardware error register needs to be cleared or another interrupt
will be generated, thus causing an infinite loop.  This is a
regression introduced when removing debug output.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:13:40 -07:00
Ralph Campbell 5df4223a44 IB/qib: Clear eager buffer memory for each new process
The eager buffers are not being cleared before being mmapped into a
new user address space.  This is a potential security risk and should
be fixed.  Note that the eager header queue is already being cleared.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:13:21 -07:00
Ralph Campbell b9e03e0489 IB/qib: Mask hardware error during link reset
The HCA checks for certain hardware errors which can be falsely
triggered when the IB link is reset. The fix is to mask them rather
than report them.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:13:20 -07:00
Dave Olson fce24a9d28 IB/qib: Don't mark VL15 bufs as WC to avoid a rare 7322 chip problem
Don't set write combining via PAT on the VL15 buffers to avoid a rare
problem with unaligned writes from interrupt-flushed store buffers.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:13:20 -07:00
Steve Wise 2c5934bfc5 RDMA/cxgb4: Derive smac_idx from port viid
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:05:16 -07:00
Steve Wise 1973e8b8ed RDMA/cxgb4: Avoid false GTS CIDX_INC overflows
The T4 IQ hw design assumes CIDX_INC credits will be returned on a
regular basis and always before the CIDX counter crosses over the PIDX
counter.  For RDMA CQs, however, returning CIDX_INC credits is only
needed and desired when and if the CQ is armed for notification.  This
can lead to a GTS write returning credits that causes the HW to reject
the credit update because it causes CIDX to pass PIDX.  Once this
happens, the CIDX/PIDX counters get out of whack and an application
can miss a notification and get stuck blocked awaiting a notification.

To avoid this, we allocate the HW IQ 2x times the requested size.
This seems to avoid the false overflow failures.  If we see more
issues with this, then we'll have to add code in the poll path to
return credits periodically like when the amount reaches 1/2 the queue
depth).  I would like to avoid this as it adds a PCI write transaction
for applications that never arm the CQ (like most MPIs).

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:04:04 -07:00
Steve Wise b21ef16a8b RDMA/cxgb4: Don't call abort_connection() for active connect failures
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:02:54 -07:00
FUJITA Tomonori f38926aa1d RDMA/cxgb4: Use the DMA state API instead of the pci equivalents
This replace the PCI DMA state API (include/linux/pci-dma.h) with the
DMA equivalents since the PCI DMA state API will be obsolete.

No functional change.

For further information about the background:

http://marc.info/?l=linux-netdev&m=127037540020276&w=2

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-07-06 14:01:42 -07:00
Ben Hutchings 39827be26b IB/{nes, ipoib}: Pass supported flags to ethtool_op_set_flags()
Following commit 1437ce3983 "ethtool:
Change ethtool_op_set_flags to validate flags", ethtool_op_set_flags
takes a third parameter and cannot be used directly as an
implementation of ethtool_ops::set_flags.

Changes nes and ipoib driver to pass in the appropriate value.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-04 11:48:14 -07:00
Jiri Kosina f1bbbb6912 Merge branch 'master' into for-next 2010-06-16 18:08:13 +02:00
Uwe Kleine-König 421f91d21a fix typos concerning "initiali[zs]e"
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-06-16 18:05:05 +02:00
Uwe Kleine-König 732bee7af3 fix typos concerning "hierarchy"
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-06-16 18:03:14 +02:00
Changli Gao d8d1f30b95 net-next: remove useless union keyword
remove useless union keyword in rtable, rt6_info and dn_route.

Since there is only one member in a union, the union keyword isn't useful.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-10 23:31:35 -07:00
Al Viro 971b2e8a3f fix the deadlock in qib_fs
get_sb_single() calls fill_super with superblock locked; calling
deactivate_super() will deadlock immedately.  Moreover, if fill_super
callback returns an error, get_sb_single() will release the reference
to superblock itself just fine.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-06-04 17:16:27 -04:00
Linus Torvalds 3e9345edd8 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/qib: Remove DCA support until feature is finished
  IB/qib: Use a single txselect module parameter for serdes tuning
  IB/qib: Don't rely on (undefined) order of function parameter evaluation
  IB/ucm: Use memdup_user()
  IB/qib: Fix undefined symbol error when CONFIG_PCI_MSI=n
2010-05-30 09:12:16 -07:00
Roland Dreier 767dcd42e5 Merge branches 'misc' and 'qib' into for-next 2010-05-27 11:05:04 -07:00
Ralph Campbell 7145c45a06 IB/qib: Remove DCA support until feature is finished
The DCA code was left over from internal development to test the
hardware feature and allow performance testing.  The results were
mixed and will require some additional work to make full use of the
feature.  Therefore, it is being removed for now.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-27 11:04:48 -07:00
Akinobu Mita 1dee31f74f ehca: convert cpu notifier to return encapsulate errno value
By the previous modification, the cpu notifier can return encapsulate
errno value. This converts the cpu notifiers for ehca.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Cc: Christoph Raisch <raisch@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:48 -07:00
Ralph Campbell a77fcf8950 IB/qib: Use a single txselect module parameter for serdes tuning
As part of the earlier patches submitted and reviewed, it was agreed
to change the way serdes tuning parameters were specified to the
driver.  The updated patch got dropped by the linux-rdma email list so
the earlier version of qib_iba7322.c ended up being used.  This patch
updates qib_iab7322.c to the simpler, single parameter method of
setting the serdes parameters.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-26 16:37:39 -07:00
Roland Dreier f27ec1d6db IB/qib: Don't rely on (undefined) order of function parameter evaluation
Some of the qib sysfs code passes a buffer pointer into 
simple_read_from_buffer() but relies on a function call in another 
parameter of the same call to initialize that pointer.  Since the order
of evaluation of function parameters is undefined, this will break if
gcc chooses the wrong order.

Fix this by splitting the code into two separate function calls.

This was noticed because of warnings like the following on ppc:

    drivers/infiniband/hw/qib/qib_fs.c: In function 'portcntrs_2_read':
    drivers/infiniband/hw/qib/qib_fs.c:203: warning: 'counters' is used uninitialized in this function

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-26 13:15:06 -07:00
Julia Lawall e642df6a0b IB/ucm: Use memdup_user()
Use memdup_user when user data is immediately copied into the
allocated region.

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

// <smpl>
@@
expression from,to,size,flag;
position p;
identifier l1,l2;
@@

-  to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+  to = memdup_user(from,size);
   if (
-      to==NULL
+      IS_ERR(to)
                 || ...) {
   <+... when != goto l1;
-  -ENOMEM
+  PTR_ERR(to)
   ...+>
   }
-  if (copy_from_user(to, from, size) != 0) {
-    <+... when != goto l2;
-    -EFAULT
-    ...+>
-  }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
2010-05-25 21:10:57 -07:00
Ralph Campbell 7e3a1f4ab1 IB/qib: Fix undefined symbol error when CONFIG_PCI_MSI=n
This patch fixes a compile error saying qib_init_iba6120_funcs() is
undefined when CONFIG_PCI_MSI is not defined.  Thanks to Randy Dunlap
<randy.dunlap@oracle.com> for finding this and suggesting the fix.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-25 21:09:43 -07:00
Linus Torvalds 8e9815a0f8 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:
  RDMA/nes: Fix incorrect unlock in nes_process_mac_intr()
  RDMA/nes: Async event for closed QP causes crash
  RDMA/nes: Have ethtool read hardware registers for rx/tx stats
  RDMA/cxgb4: Only insert sq qid in lookup table
  RDMA/cxgb4: Support IB_WR_READ_WITH_INV opcode
  RDMA/cxgb4: Set fence flag for inv-local-stag work requests
  RDMA/cxgb4: Update some HW limits
  RDMA/cxgb4: Don't limit fastreg page list depth
  RDMA/cxgb4: Return proper errors in fastreg mr/pbl allocation
  RDMA/cxgb4: Fix overflow bug in CQ arm
  RDMA/cxgb4: Optimize CQ overflow detection
  RDMA/cxgb4: CQ size must be IQ size - 2
  RDMA/cxgb4: Register RDMA provider based on LLD state_change events
  RDMA/cxgb4: Detach from the LLD after unregistering RDMA device
  IB/ipath: Remove support for QLogic PCIe QLE devices
  IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters
  IB/mad: Make needlessly global mad_sendq_size/mad_recvq_size static
  IB/core: Allow device-specific per-port sysfs files
  mlx4_core: Clean up mlx4_alloc_icm() a bit
  mlx4_core: Fix possible chunk sg list overflow in mlx4_alloc_icm()
2010-05-25 12:05:17 -07:00
Roland Dreier acdc30b56a Merge branches 'cxgb4', 'misc', 'mlx4', 'nes' and 'qib' into for-next 2010-05-25 09:54:03 -07:00
Chien Tung b17e0969dc RDMA/nes: Fix incorrect unlock in nes_process_mac_intr()
Commit ce6e74f2 ("RDMA/nes: Make nesadapter->phy_lock usage
consistent") introduced a problem where phy_lock was only unlocked
within an if statement and so nes_process_mac_intr() could return with
phy_lock still held.  Fix this.

This was discovered because of the sparse warning:

    drivers/infiniband/hw/nes/nes_hw.c:2643:9: warning: context imbalance in 'nes_process_mac_intr' - different lock contexts for basic block

Reported-by: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-25 09:53:06 -07:00
Faisal Latif df02902313 RDMA/nes: Async event for closed QP causes crash
Under abnormal termination, modify_qp() closes the QP, and async event
(AE) handling also attempts to close the same QP, causing a crash.
Fix this by checking the state of the QP before processing the AE.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:12:54 -07:00
Faisal Latif 39942a028c RDMA/nes: Have ethtool read hardware registers for rx/tx stats
Enhance ethtool to read hardware registers for rcv/tx error stats.
Also add support for free pbl resources.  Remove cq depth stats, which
are not used.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:12:54 -07:00
Steve Wise 30a6a62fc3 RDMA/cxgb4: Only insert sq qid in lookup table
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:05 -07:00
Steve Wise 2f1fb507ee RDMA/cxgb4: Support IB_WR_READ_WITH_INV opcode
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:04 -07:00
Steve Wise 4ab1eb9c8d RDMA/cxgb4: Set fence flag for inv-local-stag work requests
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:04 -07:00
Steve Wise f64b88433c RDMA/cxgb4: Update some HW limits
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:03 -07:00
Steve Wise 25737bd4ca RDMA/cxgb4: Don't limit fastreg page list depth
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:03 -07:00
Steve Wise 841dba9a5a RDMA/cxgb4: Return proper errors in fastreg mr/pbl allocation
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:02 -07:00
Steve Wise 7ec45b9234 RDMA/cxgb4: Fix overflow bug in CQ arm
- wrap cq->cqidx_inc based on cq size.
- optimize t4_arm_cq logic.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:01 -07:00
Steve Wise 84172dee05 RDMA/cxgb4: Optimize CQ overflow detection
1) save the timestamp flit in the cq when we consume a CQE.

2) always compare the saved flit with the previous entry flit when
   reading the next CQE entry.  If the flits don't compare, then we
   have overflowed.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:01 -07:00
Steve Wise 895cf5f3d6 RDMA/cxgb4: CQ size must be IQ size - 2
We need 1 extra entry for the status page and 1 to always have 1 free
entry to detect when the queue is full.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:08:00 -07:00
Steve Wise 1c01c53883 RDMA/cxgb4: Register RDMA provider based on LLD state_change events
The LLD now supports proper UP state change events, so move the RDMA
provider registration to UP path.

This fixes a crash when loading iw_cxgb4 _after_ the NFS/RDMA
transport is up and running.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:07:59 -07:00
Steve Wise fd388ce677 RDMA/cxgb4: Detach from the LLD after unregistering RDMA device
In the RDMA core unregister path, kernel users will be calling down
into the T4 provider to release resources.  So we cannot detach from
the LLD until this process completes.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-24 21:07:59 -07:00
Ralph Campbell f6d60848ba IB/ipath: Remove support for QLogic PCIe QLE devices
The ib_qib driver is taking over support for QLogic PCIe QLE devices,
so remove support for them from ib_ipath.  The ib_ipath driver now
supports only the obsolete QLogic Hyper-Transport IB host channel
adapter (model QHT7140).

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-23 22:14:25 -07:00
Ralph Campbell f931551baf IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters
Add a low-level IB driver for QLogic PCIe adapters.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-23 21:44:54 -07:00
Roland Dreier 1693395511 IB/mad: Make needlessly global mad_sendq_size/mad_recvq_size static
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-23 21:39:31 -07:00
Grant Likely cf9b59e9d3 Merge remote branch 'origin' into secretlab/next-devicetree
Merging in current state of Linus' tree to deal with merge conflicts and
build failures in vio.c after merge.

Conflicts:
	drivers/i2c/busses/i2c-cpm.c
	drivers/i2c/busses/i2c-mpc.c
	drivers/net/gianfar.c

Also fixed up one line in arch/powerpc/kernel/vio.c to use the
correct node pointer.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-05-22 00:36:56 -06:00
Grant Likely 4018294b53 of: Remove duplicate fields from of_platform_driver
.name, .match_table and .owner are duplicated in both of_platform_driver
and device_driver.  This patch is a removes the extra copies from struct
of_platform_driver and converts all users to the device_driver members.

This patch is a pretty mechanical change.  The usage model doesn't change
and if any drivers have been missed, or if anything has been fixed up
incorrectly, then it will fail with a compile time error, and the fixup
will be trivial.  This patch looks big and scary because it touches so
many files, but it should be pretty safe.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
2010-05-22 00:10:40 -06:00
Ralph Campbell 9a6edb60ec IB/core: Allow device-specific per-port sysfs files
Add a new parameter to ib_register_device() so that low-level device
drivers can pass in a pointer to a callback function that will be
called for each port that is registered in sysfs.  This allows
low-level device drivers to create files in

    /sys/class/infiniband/<hca>/ports/<N>/

without having to poke through the internals of the RDMA sysfs handling.

There is no need for an unregister function since the kobject
reference will go to zero when ib_unregister_device() is called.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-21 10:34:44 -07:00
Linus Torvalds f8965467f3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1674 commits)
  qlcnic: adding co maintainer
  ixgbe: add support for active DA cables
  ixgbe: dcb, do not tag tc_prio_control frames
  ixgbe: fix ixgbe_tx_is_paused logic
  ixgbe: always enable vlan strip/insert when DCB is enabled
  ixgbe: remove some redundant code in setting FCoE FIP filter
  ixgbe: fix wrong offset to fc_frame_header in ixgbe_fcoe_ddp
  ixgbe: fix header len when unsplit packet overflows to data buffer
  ipv6: Never schedule DAD timer on dead address
  ipv6: Use POSTDAD state
  ipv6: Use state_lock to protect ifa state
  ipv6: Replace inet6_ifaddr->dead with state
  cxgb4: notify upper drivers if the device is already up when they load
  cxgb4: keep interrupts available when the ports are brought down
  cxgb4: fix initial addition of MAC address
  cnic: Return SPQ credit to bnx2x after ring setup and shutdown.
  cnic: Convert cnic_local_flags to atomic ops.
  can: Fix SJA1000 command register writes on SMP systems
  bridge: fix build for CONFIG_SYSFS disabled
  ARCNET: Limit com20020 PCI ID matches for SOHARD cards
  ...

Fix up various conflicts with pcmcia tree drivers/net/
{pcmcia/3c589_cs.c, wireless/orinoco/orinoco_cs.c and
wireless/orinoco/spectrum_cs.c} and feature removal
(Documentation/feature-removal-schedule.txt).

Also fix a non-content conflict due to pm_qos_requirement getting
renamed in the PM tree (now pm_qos_request) in net/mac80211/scan.c
2010-05-20 21:04:44 -07:00
Linus Torvalds f39d01be4c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits)
  vlynq: make whole Kconfig-menu dependant on architecture
  add descriptive comment for TIF_MEMDIE task flag declaration.
  EEPROM: max6875: Header file cleanup
  EEPROM: 93cx6: Header file cleanup
  EEPROM: Header file cleanup
  agp: use NULL instead of 0 when pointer is needed
  rtc-v3020: make bitfield unsigned
  PCI: make bitfield unsigned
  jbd2: use NULL instead of 0 when pointer is needed
  cciss: fix shadows sparse warning
  doc: inode uses a mutex instead of a semaphore.
  uml: i386: Avoid redefinition of NR_syscalls
  fix "seperate" typos in comments
  cocbalt_lcdfb: correct sections
  doc: Change urls for sparse
  Powerpc: wii: Fix typo in comment
  i2o: cleanup some exit paths
  Documentation/: it's -> its where appropriate
  UML: Fix compiler warning due to missing task_struct declaration
  UML: add kernel.h include to signal.c
  ...
2010-05-20 09:20:59 -07:00
Grant Likely 61c7a080a5 of: Always use 'struct device.of_node' to get device node pointer.
The following structure elements duplicate the information in
'struct device.of_node' and so are being eliminated.  This patch
makes all readers of these elements use device.of_node instead.

(struct of_device *)->node
(struct dev_archdata *)->prom_node (sparc)
(struct dev_archdata *)->of_node (powerpc & microblaze)

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-05-18 16:10:44 -06:00
Roland Dreier ffebedb7ab Merge branches 'amso1100', 'bkl', 'cma', 'cxgb3', 'cxgb4', 'ipoib', 'iser', 'masked-atomics', 'misc', 'mthca' and 'nes' into for-next 2010-05-15 20:06:01 -07:00
Julia Lawall 9893e742a0 IB/core: Use kmemdup() instead of kmalloc()+memcpy()
Use kmemdup when some other buffer is immediately copied into the
allocated region.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression from,to,size,flag;
statement S;
@@

-  to = \(kmalloc\|kzalloc\)(size,flag);
+  to = kmemdup(from,size,flag);
   if (to==NULL || ...) S
-  memcpy(to, from, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-15 20:05:07 -07:00
Dan Carpenter 9fda1ac5fa IB/iser: Fix error flow in iser_create_ib_conn_res()
We shouldn't free things here because we free them later.
The call tree looks like this:
	iser_connect() ==> initiating the connection establishment
and later
	iser_cma_handler() => iser_route_handler() => iser_create_ib_conn_res()
if we fail here, eventually iser_conn_release() is called, resulting
in a double free.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-12 09:30:45 -07:00
Or Gerlitz 39ff05dbbb IB/iser: Enhance disconnection logic for multi-pathing
The iser connection teardown flow isn't over until the underlying
Connection Manager (e.g the IB CM) delivers a disconnected or timeout
event through the RDMA-CM.  When the remote (target) side isn't
reachable, e.g when some HW e.g port/hca/switch isn't functioning or
taken down administratively, the CM timeout flow is used and the event
may be generated only after relatively long time -- on the order of
tens of seconds.

The current iser code exposes this possibly long delay to higher
layers, specifically to the iscsid daemon and iscsi kernel stack. As a
result, the iscsi stack doesn't respond well: this low-level CM delay
is added to the fail-over time under HA schemes such as the one
provided by DM multipath through the multipathd(8) service.

This patch enhances the reference counting scheme on iser's IB
connections so that the disconnect flow initiated by iscsid from user
space (ep_disconnect) doesn't wait for the CM to deliver the
disconnect/timeout event.  (The connection teardown isn't done from
iser's view point until the event is delivered)

The iser ib (rdma) connection object is destroyed when its reference
count reaches zero.  When this happens on the RDMA-CM callback
context, extra care is taken so that the RDMA-CM does the actual
destroying of the associated ID, since doing it in the callback is
prohibited.

The reference count of iser ib connection normally reaches three,
where the <ref, deref> relations are

 1. conn <init, terminate>
 2. conn <bind, stop/destroy>
 3. cma id <create, disconnect/error/timeout callbacks>

With this patch, multipath fail-over time is about 30 seconds, while
without this patch, multipath fail-over time is about 130 seconds.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-12 09:30:44 -07:00
Or Gerlitz d265b98082 IB/iser: Remove buggy back-pointer setting
The iscsi connection object life cycle includes binding and unbinding
(conn_stop) to/from the iscsi transport connection object.  Since
iscsi connection objects are recycled, at the time the transport
connection (e.g iser's IB connection) is released, it is not valid to
touch the iscsi connection tied to the transport back-pointer since it
may already point to a different transport connection.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-12 09:30:44 -07:00
Or Gerlitz 2110f9bf37 IB/iser: Add asynchronous event handler
Add handler to handle events such as port up and down.  This is useful
when testing high-availability schemes such as multi-pathing.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-12 09:30:43 -07:00
Roland Dreier be4c9bad9d MAINTAINERS: Add cxgb4 and iw_cxgb4 entries
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-05-05 14:45:40 -07:00
Roland Dreier 617c9a7e39 RDMA/cxgb3: Shrink .text with compile-time init of handlers arrays
Using compile-time designated initializers for the handler arrays
instead of open-coding the initialization in iwch_cm_init() is (IMHO)
cleaner, and leads to substantially smaller code: on my x86-64 build,
bloat-o-meter shows:

add/remove: 0/1 grow/shrink: 4/3 up/down: 4/-1682 (-1678)
function                                     old     new   delta
tx_ack                                       167     168      +1
state_set                                     55      56      +1
start_ep_timer                                99     100      +1
pass_establish                               177     178      +1
act_open_req_arp_failure                      39      38      -1
sched                                         84      82      -2
iwch_cm_init                                 442      91    -351
work_handlers                               1328       -   -1328

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-28 14:57:40 -07:00
Jiri Kosina 6c9468e9eb Merge branch 'master' into for-next 2010-04-23 02:08:44 +02:00
Or Gerlitz d414371795 IPoIB: Allow disabling/enabling TSO on the fly through ethtool
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 17:17:30 -07:00
Vladimir Sokolovsky 6fa8f71984 IB/mlx4: Add support for masked atomic operations
Add support for masked atomic operations (masked compare and swap,
masked fetch and add).

Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 16:37:49 -07:00
Tetsuo Handa 5d7220e8dc RDMA/cma: Randomize local port allocation
Randomize local port allocation in the way sctp_get_port_local() does.
Update rover at the end of loop since we're likely to pick a valid port
on the first try.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 16:18:40 -07:00
Roland Dreier 53978b46cd RDMA/nes: Make unnecessarily global functions static
This allows the compiler to do a bit better; on my x86-64 build:

add/remove: 0/2 grow/shrink: 1/0 up/down: 2288/-2365 (-77)
function                                     old     new   delta
nes_init_phy                                 273    2561   +2288
nes_init_1g_phy                              469       -    -469
nes_init_2025_phy                           1896       -   -1896

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:58:28 -07:00
Chien Tung ce6e74f23d RDMA/nes: Make nesadapter->phy_lock usage consistent
nes_{read,write}_1G_phy_reg() are using phy_lock while
nes_{read,write}_10G_phy_reg() leave that to the caller.

Remove phy_lock from 1G routines and leave the locking to the caller.
Add additional phy_lock calls around 1G read/write.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:46:40 -07:00
Steve Wise cfdda9d764 RDMA/cxgb4: Add driver for Chelsio T4 RNIC
Add an RDMA/iWARP driver for Chelsio T4 Ethernet adapters.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:30:06 -07:00
FUJITA Tomonori 3a2baff783 IB/mthca: Use the dma state API instead of pci equivalents
The DMA API is preferred; no functional change.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:25:34 -07:00
FUJITA Tomonori e749444057 RDMA/amso1100: Use the dma state API instead of pci equivalents
The DMA API is preferred; no functional change.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:23:10 -07:00
Steve Wise 73a203d201 RDMA/cxgb3: Don't free skbs on NET_XMIT_* indications from LLD
The low level cxgb3 driver can return NET_XMIT_CN and friends.
The iw_cxgb3 driver should _not_ treat these as errors.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:21:28 -07:00
FUJITA Tomonori 7960d6b9de RDMA/cxgb3: Use the dma state API instead of pci equivalents
The DMA API is preferred; no functional change.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 15:17:38 -07:00
Roland Dreier bc1db9af73 IB: Explicitly rule out llseek to avoid BKL in default_llseek()
Several RDMA user-access drivers have file_operations structures with
no .llseek method set.  None of the drivers actually do anything with
f_pos, so this means llseek is essentially a NOP, instead of returning
an error as leaving other file_operations methods unimplemented would
do.  This is mostly harmless, except that a NULL .llseek means that
default_llseek() is used, and this function grabs the BKL, which we
would like to avoid.

Since llseek does nothing useful on these files, we would like it to
return an error to userspace instead of silently grabbing the BKL and
succeeding.  For nearly all of the file types, we take the
belt-and-suspenders approach of setting the .llseek method to
no_llseek and also calling nonseekable_open(); the exception is the
uverbs_event files, which are created with anon_inode_getfile(), which
already sets f_mode the same way as nonseekable_open() would.

This work is motivated by Arnd Bergmann's bkl-removal tree.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-21 12:17:38 -07:00
David S. Miller 871039f02f Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/stmmac/stmmac_main.c
	drivers/net/wireless/wl12xx/wl1271_cmd.c
	drivers/net/wireless/wl12xx/wl1271_main.c
	drivers/net/wireless/wl12xx/wl1271_spi.c
	net/core/ethtool.c
	net/mac80211/scan.c
2010-04-11 14:53:53 -07:00
Linus Torvalds 0eddb519b9 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/mlx4: Check correct variable for allocation failure
  RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp()
  RDMA/cm: Set num_paths when manually assigning path records
  IB/cm: Fix device_create() return value check
2010-04-09 11:53:06 -07:00
Roland Dreier 5091b35388 Merge branches 'cma', 'misc', 'mlx4' and 'nes' into for-linus 2010-04-09 09:14:21 -07:00
Dan Carpenter 7bd912998e IB/mlx4: Check correct variable for allocation failure
The intent here is to check the "mfrpl->mapped_page_list" allocation.
We checked "mfrpl->ibfrpl.page_list" earlier.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-07 14:18:14 -07:00
Chien Tung eadde3a1a5 RDMA/nes: Correct cap.max_inline_data assignment in nes_query_qp()
cap.max_inline_data is incorrectly set in init_attr instead of attr.
Set it in attr so subsequent init_attr.cap assignment will get the
correct value.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-07 14:16:08 -07:00
Sean Hefty ae2d9293d7 RDMA/cm: Set num_paths when manually assigning path records
When manually assigning the path records to use for a connection, save
the number of paths that were set.  Otherwise, checks against num_path
will show 0, even though path record data is available.

This was discovered by manually setting the path records from user
space, then querying the kernel to see if the correct path records
were assigned, only to discover that the kernel returned 0 path
records to the query.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-04-07 14:13:22 -07:00
David S. Miller 4a35ecf8bf Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/bonding/bond_main.c
	drivers/net/via-velocity.c
	drivers/net/wireless/iwlwifi/iwl-agn.c
2010-04-06 23:53:30 -07:00
Jiri Pirko 22bedad3ce net: convert multicast list to list_head
Converts the list and the core manipulating with it to be the same as uc_list.

+uses two functions for adding/removing mc address (normal and "global"
 variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
 manipulation with lists on a sandbox (used in bonding and 80211 drivers)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03 14:22:15 -07:00
Jani Nikula 3e340c05c0 IB/cm: Fix device_create() return value check
Use IS_ERR() instead of comparing to NULL.

Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-31 14:26:52 -07:00
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Jiri Pirko 3e4aa12f8a ipoib: remove addrlen check for mc addresses
Finally this bit can be removed. Currently, after the bonding driver is
changed/fixed (32a806c194 net-next-2.6),
that's not possible for an addr with different length than dev->addr_len
to be present in list. Removing this check as in new mc_list there will be
no addrlen in the record.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-22 18:33:11 -07:00
Linus Torvalds 2eb645e7b5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  driver core: numa: fix BUILD_BUG_ON for node_read_distance
  driver-core: document ERR_PTR() return values
  kobject: documentation: Update to refer to kset-example.c.
  sysdev: the cpu probe/release attributes should be sysdev_class_attributes
  kobject: documentation: Fix erroneous example in kobject doc.
  driver-core: fix missing kernel-doc in firmware_class
  Driver core: Early platform kernel-doc update
  sysfs: fix sysfs lockdep warning in mlx4 code
  sysfs: fix sysfs lockdep warning in infiniband code
  sysfs: fix sysfs lockdep warning in ipmi code
  sysfs: Initialised pci bus legacy_mem field before use
  sysfs: use sysfs_bin_attr_init in firmware class driver
2010-03-19 13:39:42 -07:00
Greg Kroah-Hartman 21e3bde964 sysfs: fix sysfs lockdep warning in infiniband code
This fixes a sysfs lockdep warning in the infiniband code.

Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-19 07:12:13 -07:00
Linus Torvalds 961cde93de Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (69 commits)
  [SCSI] scsi_transport_fc: Fix synchronization issue while deleting vport
  [SCSI] bfa: Update the driver version to 2.1.2.1.
  [SCSI] bfa: Remove unused header files and did some cleanup.
  [SCSI] bfa: Handle SCSI IO underrun case.
  [SCSI] bfa: FCS and include file changes.
  [SCSI] bfa: Modified the portstats get/clear logic
  [SCSI] bfa: Replace bfa_get_attr() with specific APIs
  [SCSI] bfa: New portlog entries for events (FIP/FLOGI/FDISC/LOGO).
  [SCSI] bfa: Rename pport to fcport in BFA FCS.
  [SCSI] bfa: IOC fixes, check for IOC down condition.
  [SCSI] bfa: In MSIX mode, ignore spurious RME interrupts when FCoE ports are in FW mismatch state.
  [SCSI] bfa: Fix Command Queue (CPE) full condition check and ack CPE interrupt.
  [SCSI] bfa: IOC recovery fix in fcmode.
  [SCSI] bfa: AEN and byte alignment fixes.
  [SCSI] bfa: Introduce a link notification state machine.
  [SCSI] bfa: Added firmware save clear feature for BFA driver.
  [SCSI] bfa: FCS authentication related changes.
  [SCSI] bfa: PCI VPD, FIP and include file changes.
  [SCSI] bfa: Fix to copy fpma MAC when requested by user space application.
  [SCSI] bfa: RPORT state machine: direct attach mode fix.
  ...
2010-03-18 16:54:31 -07:00
Thomas Weber 8839316121 Fix typos in comments
[Ss]ytem => [Ss]ystem
udpate => update
paramters => parameters
orginal => original

Signed-off-by: Thomas Weber <swirl@gmx.li>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-03-16 11:47:56 +01:00
Linus Torvalds 122ce878dc 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:
  RDMA/nes: Fix CX4 link problem in back-to-back configuration
  RDMA/nes: Clear stall bit before destroying NIC QP
  RDMA/nes: Set assume_aligned_header bit
  RDMA/cxgb3: Wait at least one schedule cycle during device removal
  IB/mad: Ignore iWARP devices on device removal
  IPoIB: Include return code in trace message for ib_post_send() failures
  IPoIB: Fix TX queue lockup with mixed UD/CM traffic
2010-03-13 14:38:31 -08:00
Linus Torvalds c32da02342 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits)
  doc: fix typo in comment explaining rb_tree usage
  Remove fs/ntfs/ChangeLog
  doc: fix console doc typo
  doc: cpuset: Update the cpuset flag file
  Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed
  Remove drivers/parport/ChangeLog
  Remove drivers/char/ChangeLog
  doc: typo - Table 1-2 should refer to "status", not "statm"
  tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments
  No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h
  devres/irq: Fix devm_irq_match comment
  Remove reference to kthread_create_on_cpu
  tree-wide: Assorted spelling fixes
  tree-wide: fix 'lenght' typo in comments and code
  drm/kms: fix spelling in error message
  doc: capitalization and other minor fixes in pnp doc
  devres: typo fix s/dev/devm/
  Remove redundant trailing semicolons from macros
  fix typo "definetly" -> "definitely" in comment
  tree-wide: s/widht/width/g typo in comments
  ...

Fix trivial conflict in Documentation/laptops/00-INDEX
2010-03-12 16:04:50 -08:00
Roland Dreier 0636b33c5f Merge branches 'cxgb3', 'ipoib', 'misc' and 'nes' into for-next 2010-03-12 10:54:20 -08:00
Chien Tung a72042c08a RDMA/nes: Fix CX4 link problem in back-to-back configuration
Commit 09124e19 ("RDMA/nes: Add support for KR device id 0x0110") took
out too much code and broke CX4 link detection in back-to-back
configuration.  Put back the code that does the link check.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-12 10:54:11 -08:00
Chien Tung 9f29006ae8 RDMA/nes: Clear stall bit before destroying NIC QP
Clear the stall bit to drop any incoming packets while destroying NIC
QP.  This will prevent a chip resource leak.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 15:12:15 -08:00
Faisal Latif 883c699241 RDMA/nes: Set assume_aligned_header bit
Set assume_aligned_header bit in QP context as requested by hardware group.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 15:11:12 -08:00
Steve Wise 69960a275e RDMA/cxgb3: Wait at least one schedule cycle during device removal
During a hot-plug LLD removal event or an EEH error event, iw_cxgb3
must ensure that any/all threads that might be in a cxgb3 exported
function must return from the function before iw_cxgb3 returns from
its event processing.  Do this by calling synchronize_net().

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 14:00:35 -08:00
Steve Wise 070e140c4c IB/mad: Ignore iWARP devices on device removal
When an iWARP device is unloaded, the ib_mad module logs errors.  It
should be ignoring iWARP devices on device removal just like it does
on device add.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 14:00:08 -08:00
Or Gerlitz a48f509b26 IPoIB: Include return code in trace message for ib_post_send() failures
Print the return code of ib_post_send() if it fails to make these
debugging messages more useful.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 13:43:11 -08:00
Eli Cohen f0dc117abd IPoIB: Fix TX queue lockup with mixed UD/CM traffic
The IPoIB UD QP reports send completions to priv->send_cq, which is
usually left unarmed; it only gets armed when the number of
outstanding send requests reaches the size of the TX queue. This
arming is done only in the send path for the UD QP.  However, when
sending CM packets, the net queue may be stopped for the same reasons
but no measures are taken to recover the UD path from a lockup.

Consider this scenario: a host sends high rate of both CM and UD
packets, with a TX queue length of N.  If at some time the number of
outstanding UD packets is more than N/2 and the overall outstanding
packets is N-1, and CM sends a packet (making the number of
outstanding sends equal N), the TX queue will be stopped.  When all
the CM packets complete, the number of outstanding packets will still
be higher than N/2 so the TX queue will not be restarted.

Fix this by calling ib_req_notify_cq() when the queue is stopped in
the CM path.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-03-11 13:37:11 -08:00
Jiri Kosina 318ae2edc3 Merge branch 'for-next' into for-linus
Conflicts:
	Documentation/filesystems/proc.txt
	arch/arm/mach-u300/include/mach/debug-macro.S
	drivers/net/qlge/qlge_ethtool.c
	drivers/net/qlge/qlge_main.c
	drivers/net/typhoon.c
2010-03-08 16:55:37 +01:00
Emese Revfy 52cf25d0ab Driver core: Constify struct sysfs_ops in struct kobj_type
Constify struct sysfs_ops.

This is part of the ops structure constification
effort started by Arjan van de Ven et al.

Benefits of this constification:

 * prevents modification of data that is shared
   (referenced) by many other structure instances
   at runtime

 * detects/prevents accidental (but not intentional)
   modification attempts on archs that enforce
   read-only kernel data at runtime

 * potentially better optimized code as the compiler
   can assume that the const data cannot be changed

 * the compiler/linker move const data into .rodata
   and therefore exclude them from false sharing

Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: David Teigland <teigland@redhat.com>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Hans J. Koch <hjk@linutronix.de>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:49 -08:00
Andi Kleen 0933e2d98d driver core: Convert some drivers to CLASS_ATTR_STRING
Convert some drivers who export a single string as class attribute
to the new class_attr_string functions. This removes redundant
code all over.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:48 -08:00
Andi Kleen 28812fe11a driver-core: Add attribute argument to class_attribute show/store
Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.

Also drivers can extend the attributes with own data fields
and use that in the low level function.

This makes the class attributes the same as sysdev_class attributes
and plain attributes.

This will allow further cleanups in drivers.

Full tree sweep converting all users.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:48 -08:00
Akinobu Mita 19b629f581 infiniband: use for_each_set_bit()
Replace open-coded loop with for_each_set_bit().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06 11:26:23 -08:00
Linus Torvalds 0f2cc4ecd8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits)
  init: Open /dev/console from rootfs
  mqueue: fix typo "failues" -> "failures"
  mqueue: only set error codes if they are really necessary
  mqueue: simplify do_open() error handling
  mqueue: apply mathematics distributivity on mq_bytes calculation
  mqueue: remove unneeded info->messages initialization
  mqueue: fix mq_open() file descriptor leak on user-space processes
  fix race in d_splice_alias()
  set S_DEAD on unlink() and non-directory rename() victims
  vfs: add NOFOLLOW flag to umount(2)
  get rid of ->mnt_parent in tomoyo/realpath
  hppfs can use existing proc_mnt, no need for do_kern_mount() in there
  Mirror MS_KERNMOUNT in ->mnt_flags
  get rid of useless vfsmount_lock use in put_mnt_ns()
  Take vfsmount_lock to fs/internal.h
  get rid of insanity with namespace roots in tomoyo
  take check for new events in namespace (guts of mounts_poll()) to namespace.c
  Don't mess with generic_permission() under ->d_lock in hpfs
  sanitize const/signedness for udf
  nilfs: sanitize const/signedness in dealing with ->d_name.name
  ...

Fix up fairly trivial (famous last words...) conflicts in
drivers/infiniband/core/uverbs_main.c and security/tomoyo/realpath.c
2010-03-04 08:15:33 -08:00