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* 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>
* IPoIB: Check for DMA mapping error for TX packetsRoland Dreier2006-10-10
| | | | Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Fix build with debugging offRoland Dreier2006-10-10
| | | | | | | | | | | Since pr_debug() has changed from a macro to an inline function when DEBUG is not defined, its arguments now need to be defined even when debugging is off. Therefore to_event_str() and to_qp_state_str() need to be moved out of #ifdef DEBUG. The compiler will throw the definitions away if DEBUG is not defined, but it needs to be able to see that the functions exist. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/cm: Send DREP in response to unmatched DREQSean Hefty2006-10-10
| | | | | | | | | | | | | | | | | Currently a DREP is only sent in response to a DREQ if a connection has been found matching the DREQ, and it is in the proper state. Once a DREP is sent, the local connection moves into timewait. Duplicate DREQs received while in this state result in re-sending the DREP. However, it's likely that the local connection will enter and exit timewait before the remote side times out a lost DREP and resends a DREQ. To handle this, we send a DREP in response to a DREQ, even if a local connection is not found. This avoids maintaining disconnected id's in timewait states for excessively long times, just to handle a lost DREP. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/cm: Fix timewait crash after module unloadSean Hefty2006-10-10
| | | | | | | | | | | | | If the ib_cm module is unloaded while id's are still in timewait, the CM will destroy the work queue used to process timewait. Once the id's exit timewait, their timers will fire, leading to a crash trying to access the destroyed work queue. We need to track id's that are in timewait, and cancel their deferred work on module unload. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mthca: Query port fixJack Morgenstein2006-10-10
| | | | | | | | Fill in "max_vl_num" (encoded according to VLCap field in the PortInfo MAD) and "init_type_reply" values in the ib_query_port() verb. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/srp: Enable multiple connections to the same targetIshai Rabinovitz2006-10-10
| | | | | | | | | | | | | | | | | | | Enable multiple concurrent connections to the same SRP target: 1) Use port GUID instead of node GUID in the initiator port identifier. This allows connections to be made from multiple HCA ports at the same time. 2) Let the user specify the identifier extention when adding the device. This allows userspace to make multiple connections even from the same port, if it wants too. Without this, only one connection can be made from any given HCA, even if it has multiple ports, because we don't use multi-channel mode, so targets will only allow one connection from a given initiator port ID. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/srp: Remove redundant memset()Ishai Rabinovitz2006-10-10
| | | | | | | | | scsi_host_alloc() already allocates with kzalloc(), so the struct Scsi_Host is zeroed out, including the private data portion. Remove the redundant memset that zeros this out again in the SRP initiator. Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/amso1100: Add spinlocks to serialize ib_post_send/ib_post_recvTom Tucker2006-10-10
| | | | | | | | | | | The AMSO driver was not thread-safe in the post WR code and had code that would sleep if the WR post FIFO was full. Since these functions can be called on interrupt level I changed the sleep to a udelay. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* Remove all inclusions of <linux/config.h>Dave Jones2006-10-04
| | | | | | kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
* Still more typo fixesMatt LaPlante2006-10-03
| | | | Signed-off-by: Adrian Bunk <bunk@stusta.de>
* IB/ehca: Tweak trace message formatHoang-Nam Nguyen2006-10-02
| | | | | | | Add an extra space to make things more readable. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ehca: Fix device registrationHoang-Nam Nguyen2006-10-02
| | | | | | | | | | Move the call to ib_register_device() later, since a device should not be registered until it is completely read to be used. This fixes crashes that occur if an upper-layer driver such as IPoIB is loaded before the ehca module. Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix RDMA readsRalph Campbell2006-10-02
| | | | | | | | | | The PSN used to generate the request following a RDMA read was incorrect and some state booking wasn't maintained correctly. This patch fixes that. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
* RDMA/cma: Optimize error handlingKrishna Kumar2006-10-02
| | | | | | | | | | Reorganize code relating to cma_get_net_info() and rdam_create_id() to optimize error case handling (no need to alloc memory/etc. as part of rdma_create_id() if input parameters are wrong). Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/cma: Eliminate unnecessary remove_listKrishna Kumar2006-10-02
| | | | | | | | | Eliminate remove_list by using list_del_init() instead during device removal handling. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/cma: Set status correctly on route resolution errorSean Hefty2006-10-02
| | | | | | | | On reporting a route error, also include the status for the error, rather than indicating a status of 0 when an error has occurred. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/cma: Fix device removal raceKrishna Kumar2006-10-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The race is as follows: A process : cma_process_remove() calls cma_remove_id_dev(), which sets id state to CMA_DEVICE_REMOVAL and calls wait_event(dev_remove). B process : cma_req_handler() had incremented dev_remove, and calls cma_acquire_ib_dev() and on failure calls cma_release_remove(), which does a wake_up of cma_process_remove(). Then cma_req_handler() calls rdma_destroy_id(); A Process : cma_remove_id_dev() gets woken and checks the state of id, and since it is still (wrongly) CMA_DEVICE_REMOVAL, it calls notify_user(id) and if that fails, the caller - cma_process_remove() calls rdma_destroy_id(id). Two processes can call rdma_destroy_id(), resulting in one de-referencing kfreed id_priv. Fix is for process B to set CMA_DESTROYING in cma_req_handler() so that process A will return instead of doing a rdma_destroy_id(). Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* RDMA/cma: Fix leak of cm_ids in case of failuresKrishna Kumar2006-10-02
| | | | | | | | cma_connect_ib() and cma_connect_iw() leak cm_id's in failure cases. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* [PATCH] namespaces: utsname: use init_utsname when appropriateSerge E. Hallyn2006-10-02
| | | | | | | | | | | | | | | | | | | | | In some places, particularly drivers and __init code, the init utsns is the appropriate one to use. This patch replaces those with a the init_utsname helper. Changes: Removed several uses of init_utsname(). Hope I picked all the right ones in net/ipv4/ipconfig.c. These are now changed to utsname() (the per-process namespace utsname) in the previous patch (2/7) [akpm@osdl.org: CIFS fix] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Andrey Savochkin <saw@sw.ru> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] r/o bind mount prepwork: inc_nlink() helperDave Hansen2006-10-01
| | | | | | | | | | | This is mostly included for parity with dec_nlink(), where we will have some more hooks. This one should stay pretty darn straightforward for now. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2006-09-29
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: (33 commits) IB/ipath: Fix lockdep error upon "ifconfig ibN down" IB/ipath: Fix races with ib_resize_cq() IB/ipath: Support new PCIE device, QLE7142 IB/ipath: Set CPU affinity early IB/ipath: Fix EEPROM read when driver is compiled with -Os IB/ipath: Fix and recover TXE piobuf and PBC parity errors IB/ipath: Change HT CRC message to indicate how to resolve problem IB/ipath: Clean up module exit code IB/ipath: Call mtrr_del with correct arguments IB/ipath: Flush RWQEs if access error or invalid error seen IB/ipath: Improved support for PowerPC IB/ipath: Drop unnecessary "(void *)" casts IB/ipath: Support multiple simultaneous devices of different types IB/ipath: Fix mismatch in shifts and masks for printing debug info IB/ipath: Fix compiler warnings and errors on non-x86_64 systems IB/ipath: Print more informative parity error messages IB/ipath: Ensure that PD of MR matches PD of QP checking the Rkey IB/ipath: RC and UC should validate SLID and DLID IB/ipath: Only allow complete writes to flash IB/ipath: Count SRQs properly ...
| * IB/ipath: Fix lockdep error upon "ifconfig ibN down"Bryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix races with ib_resize_cq()Bryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | | | The resize CQ function changes the memory used to store the queue. Other routines need to honor the lock before accessing the pointer to the queue and verify that the head and tail are in range. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Support new PCIE device, QLE7142Bryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Set CPU affinity earlyBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | | | This change moves around port assignment so that it happens before any memory is allocated. This allows memory to be allocated on an appropriate CPU, which improves performance for users of /dev/ipath. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix EEPROM read when driver is compiled with -OsBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | | | The EEPROM is read via programmable I/O pins. When the driver is compiled -Os, the CPU can speculatively read the I/O value before it is valid. This patch fixes the problem. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix and recover TXE piobuf and PBC parity errorsBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can sometimes trigger parity errors due to processor speculative reads to our write-combined memory (mostly seen on Woodcrest). Add a stats counter for these. Factored out the sendbuffererror buffer cancellation code so it can be used in the new handling; suppress likely subsequent error messages if within two jiffies of the cancellation. Also restore 2 dropped TXE lines on hwe_bitsextant noticed while debugging. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Change HT CRC message to indicate how to resolve problemBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | The system must be powercycled to clear a HT CRC error; reloading the driver is not enough. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Clean up module exit codeBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Call mtrr_del with correct argumentsBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | We were passing 0 for base and length, which worked on older kernels, but it doesn't seem to any longer. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Flush RWQEs if access error or invalid error seenBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | If the receiver goes into the error state, we need to flush the posted receive WQEs. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Improved support for PowerPCBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Drop unnecessary "(void *)" castsBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Support multiple simultaneous devices of different typesBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | Prior to this change, the driver was not able to support a HT and PCIE card simultaneously present in the same machine. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix mismatch in shifts and masks for printing debug infoBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | | | | | Fixed mismatch in linkstate/trainingstate shifts and masks in the IPATH_IBSTATE_MASK macro. It kept some linktrainingstates from being printed correctly in debug; no functionality issue unless I misread the code. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix compiler warnings and errors on non-x86_64 systemsBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Print more informative parity error messagesBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Ensure that PD of MR matches PD of QP checking the RkeyBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: RC and UC should validate SLID and DLIDBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | This is required for IB conformance (spec ch. 9.6.1.5). Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Only allow complete writes to flashBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | Don't allow a write to the eeprom from ipathfs unless the write is exactly 128 bytes and starts at offset 0. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Count SRQs properlyBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Lock and count allocated CQs properlyBryan O'Sullivan2006-09-28
| | | | | | | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Clean up handling of GUID 0Bryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | Respond with an error to the SM if our GUID is 0, and don't allow the user to set our GUID to 0. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Unregister from IB core earlyBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | This gives upper-level protocols a chance to unregister while the device is still usable. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Support revision 2 InfiniPath PCIE devicesBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | This also entailed a little GPIO-interrupt general cleanup. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Driver support for userspace sharing of HW contextsBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | | | This allows multiple userspace processes to share a single hardware context in a master/slave arrangement. It is backwards binary compatible with existing userspace. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Fix memory leak if allocation failsBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | If the second allocation failed, the first structure allocated in this routine was not freed. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Limit # of packets sent without an ACK receivedBryan O'Sullivan2006-09-28
| | | | | | | | | | | | | | | | The sender requests an ACK every 1/2 MB to avoid retransmit timeouts that were causing MVAPICH mod_bw to fail after a predictable number of sends. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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