Commit graph

789 commits

Author SHA1 Message Date
Michael S. Tsirkin
f469b2626f IB/ucm: Fix deadlock in cleanup
ib_ucm_cleanup_events() holds file_mutex while calling ib_destroy_cm_id().
This can deadlock since ib_destroy_cm_id() flushes event handlers, and
ib_ucm_event_handler() needs file_mutex, too.  Therefore, drop the
file_mutex during the call to ib_destroy_cm_id().

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:10 -08:00
Sean Hefty
e1444b5a16 IB/cm: Fix automatic path migration support
The ib_cm_establish() function is replaced with a more generic
ib_cm_notify().  This routine is used to notify the CM that failover
has occurred, so that future CM messages (LAP, DREQ) reach the remote
CM.  (Currently, we continue to use the original path)  This bumps the
userspace CM ABI.

New alternate path information is captured when a LAP message is sent
or received.  This allows QP attributes to be initialized for the user
when a new path is loaded after failover occurs.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:10 -08:00
Michael S. Tsirkin
2745b5b713 IPoIB: Fix skb leak when freeing neighbour
ipoib_neigh_free() is sometimes called while neighbour is still alive,
so it might still have queued skbs.  Fix skb leak in this case.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:09 -08:00
Vu Pham
d2fcea7d68 IB/srp: Fix memory leak on reconnect
SRP reallocates the IU buffers for tx_ring and rx_ring without freeing
the old buffers when it reconnects to a target.  Fix this by keeping
the old IU buffers around.

Signed-off-by: Vu Pham <vu@mellanox.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:09 -08:00
Roland Dreier
04699a1f86 RDMA/addr: list_move() cleanups
Replace a couple list_del()/list_add() combos with list_move().

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:09 -08:00
Krishna Kumar
c78bb8442b RDMA/addr: Fix some cancellation problems in process_req()
Fix following problems in process_req() relating to cancellation:

- Function is wrongly doing another addr_remote() when cancelled,
  which is not required.
- Make failure reporting immediate by using time_after_eq().
- On cancellation, -ETIMEDOUT was returned to the callback routine
  instead of the more appropriate -ECANCELLED (users getting notified
  may want to print/return this status, eg ucma_event_handler).

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:09 -08:00
Krishna Kumar
c9edea298e RDMA/amso1100: Prevent deadlock in destroy QP
It is possible to swap the CQs used for send_cq and recv_cq when
creating two different QPs.  If these two QPs are then destroyed at
the same time, an AB-BA deadlock can occur because the CQ locks are
taken our of order.  Fix this by always taking CQ locks in a fixed
order.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:08 -08:00
Jack Morgenstein
7013696a5f IB/mthca: Fix initial SRQ logsize for mem-free HCAs
When initializing an mthca SRQ, the log_srq_size field should be the
log of the number of SRQ WQEs, not the log of the number of bytes in
the SRQ.

This affects only mthca drivers for memfree HCAs which set the initial
srq wqe counter (in the SW2HW transition) to a non-zero value.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:08 -08:00
Hoang-Nam Nguyen
2771e9ed47 IB/ehca: Use WQE offset instead of WQE addr for pending work reqs
This is a patch for ehca to fix a bug in prepare_sqe_to_rts(), which
used WQE address to iterate pending work requests.  This might cause
an access violation since the queue pages can not be assumed to follow
each other consecutively.  Thus, this patch introduces a few queue
functions to determine WQE offset based on its address and uses WQE
offset to iterate the pending work requests.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:08 -08:00
Krishna Kumar
9ab1ffa877 RDMA/iwcm: Fix comment for iwcm_deref_id() to match code
In iwcm_deref_id(), the comment says : "If the last reference is being
removed and iw_destroy_cm_id is waiting, wake up the waiting
thread". The second part of the comment, "and iw_destroy_cm_id is
waiting," is wrong, since this function either wakes the waiter
already waiting in iwcm_deref_id, or enables it (so that when
wait_for_completion() is performed later, it will immediately return).

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:08 -08:00
Krishna Kumar
715a588f42 RDMA/iwcm: Remove unnecessary function argument
Remove unnecessary cm_id_priv argument to copy_private_data(), and
change text to reflect the code.  Fix couple of typos in comments.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:08 -08:00
Krishna Kumar
13fccdb380 RDMA/iwcm: Remove unnecessary initializations
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:08 -08:00
Krishna Kumar
83b9658623 RDMA/iwcm: Fix memory leak
If we get IW_CM_EVENT_CONNECT_REQUEST message and encounter an error
(not in the LISTEN state, cannot create an id, cannot alloc
work_entry, etc), then the memory allocated by cm_event_handler() in
the event->private_data gets leaked. Since cm_work_handler has already
put the event on the work_free_list, this allocated memory is
leaked. High backlog value can allow DoS attacks.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:07 -08:00
Krishna Kumar
33ba0fa9f3 RDMA/iwcm: Fix memory corruption bug in cm_work_handler()
Possible memory corruption scenario: after putting the work entry back
on the work_free_list, we call process_event() which dereferences
work->event, which could have been modified to another value
meanwhile.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:07 -08:00
Roland Dreier
e54f81889c IB: Convert kmem_cache_t -> struct kmem_cache
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:07 -08:00
Roland Dreier
53533e16b1 IB/ipath: Fix typo in pma_counter_select subscript
The array has only 5 entries, so [5] should have been [4].

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:07 -08:00
Roland Dreier
29666128a2 RDMA/amso1100: Fix section mismatches
The amso1100 driver was missing a couple of __devinit/__devexit
annotations for init/cleanup functions that are called from
__devinit/__devexit functions.

Reported by Randy Dunlap <randy.dunlap@oracle.com>.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:07 -08:00
Roland Dreier
f4f3d0f0ec IB/mthca: Fix section mismatches
Commit b3b30f5e ("IB/mthca: Recover from catastrophic errors")
introduced some section mismatch breakage, because the error recovery
code tears down and reinitializes the device, which calls into lots of
code originally marked __devinit and __devexit from regular .text.

Fix this by getting rid of these now-incorrect section markers.

Reported by Randy Dunlap <randy.dunlap@oracle.com>.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:06 -08:00
Arne Redlich
3c8edf0eca IB/srp: Increase supported CDB size
Set the Scsi_Host's max_cmd_len from 12 (default) to 16 for
SRP. Otherwise scsi_dispatch_cmd() won't pass down certain commands
such as READ CAPACITY 16, required for supporting disks > 2TB.

Signed-off-by: Arne Redlich <arne.redlich@xiranet.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:06 -08:00
Dotan Barak
e31353eaec RDMA/cm: Remove setting local write as part of QP access flags
The qp_access_flags are for remote access permissions only, so
IB_ACCESS_LOCAL_WRITE is an invalid value.  Remove it from the values
set by cm_init_qp_init_attr() and cma_init_ib_qp().

Signed-off-by: Dotan Barak <dotanb@mellanox.co.il>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:06 -08:00
Eric Sesterhenn
bed8bdfddd IB: kmemdup() cleanup
Replace open coded kmemdup() to save some screen space, and allow
inlining/not inlining to be triggered by gcc.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:06 -08:00
Krishna Kumar
a1a733f65b RDMA/cma: Rewrite cma_req_handler() to encapsulate common code
Rewrite cma_req_handler error handling case to encapsulate
common code.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:05 -08:00
Krishna Kumar
f115db4803 RDMA/addr: Use time_after_eq() instead of time_after() in queue_req()
In queue_req(), use time_after_eq() instead of time_after()
for following reasons :

- Improves insert time if multiple entries with same time are
  present.
- set_timeout need not be called if entry with same time
  is added to the list (and that happens to be the entry
  with the smallest time), saving atomic/locking operations.
- Earlier entries with same time are deleted first (fifo).

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:05 -08:00
Krishna Kumar
e4022274cf RDMA/cma: Remove redundant check in cma_add_one
Remove redundant check of node_guid in cma_add_one().

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:04 -08:00
Krishna Kumar
e82153b54d RDMA/cma: Optimize cma_bind_loopback() to check for empty list
Optimize to test for an empty list first.  This ends up simplifying
the code too.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29 15:33:04 -08:00
Bryan O'Sullivan
3f5a6ca31c IB/ipath: Depend on CONFIG_NET
ipath uses skb functions and won't build without CONFIG_NET.

Spotted by Randy Dunlap.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-20 13:06:19 -08:00
Linus Torvalds
f44ea62344 Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
  IPoIB: Clear high octet in QP number
2006-11-20 10:48:23 -08:00
Michael S. Tsirkin
073ae841d6 IPoIB: Clear high octet in QP number
IPoIB assumes that high (reserved) octet in the hardware address is 0,
and copies it into the QPN.  This violates RFC 4391 (which requires
that the high 8 bits are ignored on receive), and will result in an
invalid QPN being used when interoperating with IPoIB connected mode.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-16 13:56:45 -08:00
Bryan O'Sullivan
e757bef270 [PATCH] IB/ipath - fix driver build for platforms with PCI, but not HT
The PCI Express and Hypertransport chip-specific source files should only
be built when the kernel has the capability of actually compiling them.

This fixes the driver build on, for example, ia64.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-16 11:43:37 -08:00
Linus Torvalds
0f66c08e96 Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mad: Fix race between cancel and receive completion
  RDMA/amso1100: Fix && typo
  RDMA/amso1100: Fix unitialized pseudo_netdev accessed in c2_register_device
  IB/ehca: Activate scaling code by default
  IB/ehca: Use named constant for max mtu
  IB/ehca: Assure 4K alignment for firmware control blocks
2006-11-13 09:52:04 -08:00
Roland Dreier
39798695b4 IB/mad: Fix race between cancel and receive completion
When ib_cancel_mad() is called, it puts the canceled send on a list
and schedules a "flushed" callback from process context.  However,
this leaves a window where a receive completion could be processed
before the send is fully flushed.

This is fine, except that ib_find_send_mad() will find the MAD and
return it to the receive processing, which results in the sender
getting both a successful receive and a "flushed" send completion for
the same request.  Understandably, this confuses the sender, which is
expecting only one of these two callbacks, and leads to grief such as
a use-after-free in IPoIB.

Fix this by changing ib_find_send_mad() to return a send struct only
if the status is still successful (and not "flushed").  The search of
the send_list already had this check, so this patch just adds the same
check to the search of the wait_list.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-13 09:38:07 -08:00
Jean Delvare
b26c791e9c RDMA/amso1100: Fix && typo
Fix the AMSO1100 firmware version computation, which was broken
due to "&&" being used where "&" should have.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-13 09:38:07 -08:00
Tom Tucker
2ffcab6ae4 RDMA/amso1100: Fix unitialized pseudo_netdev accessed in c2_register_device
Rework some load-time error handling: c2_register_device() leaked when
it failed, and the function that called it didn't check the return code.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-13 09:38:04 -08:00
Hoang-Nam Nguyen
f2c238a0c5 IB/ehca: Activate scaling code by default
Change ehca's Kconfig to activates scaling code as default.  After
several measurements we saw that this feature prevents dropped packets
(UD) in stress situation. Thus, enabling it helps to improve ehca's
bandwidth through IPoIB.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-13 08:46:28 -08:00
Hoang-Nam Nguyen
c58121143f IB/ehca: Use named constant for max mtu
Define and use a constant EHCA_MAX_MTU instead hardcoded value.

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-13 08:46:28 -08:00
Hoang-Nam Nguyen
7e28db5d8f IB/ehca: Assure 4K alignment for firmware control blocks
Assure 4K alignment for firmware control blocks in 64K page mode,
because kzalloc()'s result address might not be 4K aligned if 64K
pages are enabled. Thus, we introduce wrappers called
ehca_{alloc,free}_fw_ctrlblock(), which use a slab cache for objects
with 4K length and 4K alignment in order to alloc/free firmware
control blocks in 64K page mode. In 4K page mode those wrappers just
are defines of get_zeroed_page() and free_page().

Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-09 12:41:57 -08:00
Bryan O'Sullivan
51f65ebccf [PATCH] IB/ipath - program intconfig register using new HT irq hook
Eric's changes to the htirq infrastructure require corresponding
modifications to the ipath HT driver code so that interrupts are still
delivered properly.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-08 18:29:25 -08:00
Sean Hefty
7a118df3ea RDMA/addr: Use client registration to fix module unload race
Require registration with ib_addr module to prevent caller from
unloading while a callback is in progress.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-02 14:26:04 -08:00
Michael S. Tsirkin
68586b67ab IB/mthca: Fix MAD extended header format for MAD_IFC firmware command
Several fields in an incoming MAD extended info header were passed
into the MAD_IFC firmware command at incorrect offsets (mostly off by
4 bytes).  As the result, the HCA will fail to generate traps in which
this info is needed (e.g. traps which include the GRH of the incoming
packet), in violation of the IB spec.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-31 10:51:26 -08:00
Jack Morgenstein
0b26c88f29 IB/uverbs: Return sq_draining value in query_qp response
Return the sq_draining value back to user space for query_qp instead
of the en_sqd_async notify value, which is valid only for
modify_qp.  For query_qp, the draining status should returned.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-30 21:19:35 -08:00
Steve Wise
d7b748d63c IB/amso1100: Fix incorrect pr_debug()
pr_debug() was printing the wrong stuff.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-30 20:52:53 -08:00
Steve Wise
8de94ce19d IB/amso1100: Use dma_alloc_coherent() instead of kmalloc/dma_map_single
The Ammasso driver needs to use dma_alloc_coherent() for
allocating memory that will be used by the HW for dma.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-30 20:52:52 -08:00
Paul Mackerras
04d03bc576 IB/ehca: Fix eHCA driver compilation for uniprocessor
The eHCA driver does not compile for a uniprocessor configuration
(CONFIG_SMP=n), due to H_SUCCESS and other symbols being undefined.
This fixes it.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Hoang-Nam Nguyen <HNGUYEN@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-30 20:52:51 -08:00
Krishna Kumar
255d0c14b3 RDMA/cma: rdma_bind_addr() leaks a cma_dev reference count
rdma_bind_addr() leaks a cma_dev reference count in failure case.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2006-10-30 20:52:51 -08:00
Erez Zilber
2e7a742628 IB/iser: Start connection after enabling iSER
When a connection is started (a new connection or a recovered one),
iSER should prepare its resources for full-featured mode and only then
notify the iSCSI layer that it is ready to start queueing commands.

Signed-off-by: Erez Zilber <erezz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-30 20:52:50 -08:00
Arthur Kepner
1f5c23e2c1 IB/mthca: Use mmiowb after doorbell ring
We discovered a problem when running IPoIB applications on multiple
CPUs on an Altix system. Many messages such as:

ib_mthca 0002:01:00.0: SQ 000014 full (19941644 head, 19941707 tail, 64 max, 0 nreq)

appear in syslog, and the driver wedges up.

Apparently this is because writes to the doorbells from different CPUs
reach the device out of order. The following patch adds mmiowb() calls
after doorbell rings to ensure the doorbell writes are ordered.

Signed-off-by: Arthur Kepner <akepner@sgi.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-16 20:22:35 -07:00
Robert Walsh
6ef93dddfe IB/ipath: Initialize diagpkt file on device init only
Don't attempt to set up the diagpkt device in the module init code.
Instead, wait until a piece of hardware is initialized.  Fixes a
problem when loading the ib_ipath module when no InfiniPath hardware
is present: modprobe would go into the D state and stay there.

Signed-off-by: Robert Walsh <robert.walsh@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-16 10:06:07 -07:00
Adrian Bunk
fb7711e71e RDMA/amso1100: Fix a NULL dereference in error path
This patch fixes a NULL dereference spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Acked-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-16 10:06:07 -07:00
Henrik Kretzschmar
d986a27413 RDMA/amso1100: pci_module_init() conversion
pci_module_init() convertion in amso1100 driver.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-16 10:06:07 -07:00
Michael S. Tsirkin
2cbe19d48a IB/mthca: Fix off-by-one in mthca SRQ creation
All HCAs (not just mem-free) need a spare SRQ entry, so bump srq->max
by 1 in all cases.

Noted by Jack Morgenstein <jackm@mellanox.co.il>

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-10 12:50:38 -07:00