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* IB/ucm: Fix deadlock in cleanupMichael S. Tsirkin2006-11-29
| | | | | | | | | | 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>
* IB/cm: Fix automatic path migration supportSean Hefty2006-11-29
| | | | | | | | | | | | | | | 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>
* IPoIB: Fix skb leak when freeing neighbourMichael S. Tsirkin2006-11-29
| | | | | | | | | 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>
* IB/srp: Fix memory leak on reconnectVu Pham2006-11-29
| | | | | | | | | 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>
* RDMA/addr: list_move() cleanupsRoland Dreier2006-11-29
| | | | | | Replace a couple list_del()/list_add() combos with list_move(). Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/addr: Fix some cancellation problems in process_req()Krishna Kumar2006-11-29
| | | | | | | | | | | | | | 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>
* RDMA/amso1100: Prevent deadlock in destroy QPKrishna Kumar2006-11-29
| | | | | | | | | | | 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>
* IB/mthca: Fix initial SRQ logsize for mem-free HCAsJack Morgenstein2006-11-29
| | | | | | | | | | | | 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>
* IB/ehca: Use WQE offset instead of WQE addr for pending work reqsHoang-Nam Nguyen2006-11-29
| | | | | | | | | | | | 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>
* RDMA/iwcm: Fix comment for iwcm_deref_id() to match codeKrishna Kumar2006-11-29
| | | | | | | | | | | | | 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>
* RDMA/iwcm: Remove unnecessary function argumentKrishna Kumar2006-11-29
| | | | | | | | | 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>
* RDMA/iwcm: Remove unnecessary initializationsKrishna Kumar2006-11-29
| | | | | | Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/iwcm: Fix memory leakKrishna Kumar2006-11-29
| | | | | | | | | | | | | 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>
* RDMA/iwcm: Fix memory corruption bug in cm_work_handler()Krishna Kumar2006-11-29
| | | | | | | | | | | 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>
* IB: Convert kmem_cache_t -> struct kmem_cacheRoland Dreier2006-11-29
| | | | Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix typo in pma_counter_select subscriptRoland Dreier2006-11-29
| | | | | | The array has only 5 entries, so [5] should have been [4]. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix section mismatchesRoland Dreier2006-11-29
| | | | | | | | | | 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>
* IB/mthca: Fix section mismatchesRoland Dreier2006-11-29
| | | | | | | | | | | | | 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>
* IB/srp: Increase supported CDB sizeArne Redlich2006-11-29
| | | | | | | | | 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>
* RDMA/cm: Remove setting local write as part of QP access flagsDotan Barak2006-11-29
| | | | | | | | | | 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>
* IB: kmemdup() cleanupEric Sesterhenn2006-11-29
| | | | | | | | 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>
* RDMA/cma: Rewrite cma_req_handler() to encapsulate common codeKrishna Kumar2006-11-29
| | | | | | | | | 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>
* RDMA/addr: Use time_after_eq() instead of time_after() in queue_req()Krishna Kumar2006-11-29
| | | | | | | | | | | | | | | | 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>
* RDMA/cma: Remove redundant check in cma_add_oneKrishna Kumar2006-11-29
| | | | | | | | 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>
* RDMA/cma: Optimize cma_bind_loopback() to check for empty listKrishna Kumar2006-11-29
| | | | | | | | | 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>
* IB/ipath: Depend on CONFIG_NETBryan O'Sullivan2006-11-20
| | | | | | | | | | 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>
* Merge branch 'for-linus' of ↵Linus Torvalds2006-11-20
|\ | | | | | | | | | | | | 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
| * IPoIB: Clear high octet in QP numberMichael S. Tsirkin2006-11-16
| | | | | | | | | | | | | | | | | | | | 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>
* | [PATCH] IB/ipath - fix driver build for platforms with PCI, but not HTBryan O'Sullivan2006-11-16
|/ | | | | | | | | | | | | 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>
* Merge branch 'for-linus' of ↵Linus Torvalds2006-11-13
|\ | | | | | | | | | | | | | | | | | | | | | | 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
| * IB/mad: Fix race between cancel and receive completionRoland Dreier2006-11-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * RDMA/amso1100: Fix && typoJean Delvare2006-11-13
| | | | | | | | | | | | | | | | | | 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>
| * RDMA/amso1100: Fix unitialized pseudo_netdev accessed in c2_register_deviceTom Tucker2006-11-13
| | | | | | | | | | | | | | | | 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>
| * IB/ehca: Activate scaling code by defaultHoang-Nam Nguyen2006-11-13
| | | | | | | | | | | | | | | | | | | | | | 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>
| * IB/ehca: Use named constant for max mtuHoang-Nam Nguyen2006-11-13
| | | | | | | | | | | | | | 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>
| * IB/ehca: Assure 4K alignment for firmware control blocksHoang-Nam Nguyen2006-11-09
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* | [PATCH] IB/ipath - program intconfig register using new HT irq hookBryan O'Sullivan2006-11-08
|/ | | | | | | | | | | | 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>
* RDMA/addr: Use client registration to fix module unload raceSean Hefty2006-11-02
| | | | | | | | 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>
* IB/mthca: Fix MAD extended header format for MAD_IFC firmware commandMichael S. Tsirkin2006-10-31
| | | | | | | | | | | 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>
* IB/uverbs: Return sq_draining value in query_qp responseJack Morgenstein2006-10-31
| | | | | | | | | 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>
* IB/amso1100: Fix incorrect pr_debug()Steve Wise2006-10-30
| | | | | | | pr_debug() was printing the wrong stuff. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/amso1100: Use dma_alloc_coherent() instead of kmalloc/dma_map_singleSteve Wise2006-10-30
| | | | | | | | 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>
* IB/ehca: Fix eHCA driver compilation for uniprocessorPaul Mackerras2006-10-30
| | | | | | | | | | 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>
* RDMA/cma: rdma_bind_addr() leaks a cma_dev reference countKrishna Kumar2006-10-30
| | | | | | | 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>
* IB/iser: Start connection after enabling iSERErez Zilber2006-10-30
| | | | | | | | | 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>
* IB/mthca: Use mmiowb after doorbell ringArthur Kepner2006-10-16
| | | | | | | | | | | | | | | | 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>
* IB/ipath: Initialize diagpkt file on device init onlyRobert Walsh2006-10-16
| | | | | | | | | | | 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>
* RDMA/amso1100: Fix a NULL dereference in error pathAdrian Bunk2006-10-16
| | | | | | | | | | | 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>
* RDMA/amso1100: pci_module_init() conversionHenrik Kretzschmar2006-10-16
| | | | | | | | 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>
* IB/mthca: Fix off-by-one in mthca SRQ creationMichael S. Tsirkin2006-10-10
| | | | | | | | | | | 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>
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