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2009-09-05IB/mlx4: Don't allow userspace open while recovering from catastrophic errorJack Morgenstein2-0/+7
Userspace apps are supposed to release all ib device resources if they receive a fatal async event (IBV_EVENT_DEVICE_FATAL). However, the app has no way of knowing when the device has come back up, except to repeatedly attempt ibv_open_device() until it succeeds. However, currently there is no protection against the open succeeding while the device is in being removed following the fatal event. In this case, the open will succeed, but as a result the device waits in the middle of its removal until the new app releases its resources -- and the new app will not do so, since the open succeeded at a point following the fatal event generation. This patch adds an "active" flag to the device. The active flag is set to false (in the fatal event flow) before the "fatal" event is generated, so any subsequent ibv_dev_open() call to the device will fail until the device comes back up, thus preventing the above deadlock. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-09-05IB/mlx4: Annotate CQ lockingRoland Dreier1-4/+8
mlx4_ib_lock_cqs()/mlx4_ib_unlock_cqs() are helper functions that lock/unlock both CQs attached to a QP in the proper order to avoid AB-BA deadlocks. Annotate this so sparse can understand what's going on (and warn us if we misuse these functions). Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-09-05IB: Use printk_once() for driver versionsMarcin Slusarz1-5/+1
Replace open-coded reimplementations with printk_once(). Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-06-05IB/mlx4: Add strong ordering to local inval and fast reg work requestsJack Morgenstein1-0/+4
The ConnectX Programmer's Reference Manual states that the "SO" bit must be set when posting Fast Register and Local Invalidate send work requests. When this bit is set, the work request will be executed only after all previous work requests on the send queue have been executed. (If the bit is not set, Fast Register and Local Invalidate WQEs may begin execution too early, which violates the defined semantics for these operations) This fixes the issue with NFS/RDMA reported in <http://lists.openfabrics.org/pipermail/general/2009-April/059253.html> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Cc: <stable@kernel.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-05-07IB/mlx4: Don't overwrite fast registration page list when posting work requestJack Morgenstein3-3/+10
The low-level mlx4 driver modified the page-list addresses for fast register work requests post send to big-endian, and set a "present" bit. This caused problems later when the consumer attempted to unmap the pages using the page-list (using the list addresses which were assumed to be still in CPU-endian order). Fix the mlx4 driver to allocate two buffers and use a private buffer for the hardware-format bus addresses. This patch fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1571>, an NFS/RDMA server crash. The cause of the crash was found by Vu Pham of Mellanox. The fix is along the lines suggested by Steve Wise in comment #21 in bug 1571. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-03-30IB/mlx4: Use pgprot_writecombine() for BlueFlame pagesRoland Dreier1-2/+1
The PAT work on x86 has finally made pgprot_writecombine() a usable API for modular drivers. As the comment indicates, this is exactly what we want to use in mlx4_ib to map BlueFlame pages up to userspace, since using WC for these pages improves small message latency significantly. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-03-24Merge branches 'cxgb3', 'endian', 'ipath', 'ipoib', 'iser', 'mad', 'misc', 'mlx4', 'mthca', 'nes' and 'sysfs' into for-nextRoland Dreier3-20/+34
2009-03-18IB/mlx4: Unregister IB device prior to CLOSE PORT commandYevgeny Petrilin1-2/+3
According to the ConnectX programmer's reference manual, all operations should be stopped, all QPs should be torn down and all WQEs flushed before the CLOSE_PORT command is invoked. In some cases reversing the order of operations (as implemented now) could cause a loss of completions. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-01-28IB/mlx4: Fix dispatch of IB_EVENT_LID_CHANGE eventMoni Shoua1-7/+20
When snooping a PortInfo MAD, its client_reregister bit is checked. If the bit is ON then a CLIENT_REREGISTER event is dispatched, otherwise a LID_CHANGE event is dispatched. This way of decision ignores the cases where the MAD changes the LID along with an instruction to reregister (so a necessary LID_CHANGE event won't be dispatched) or the MAD is neither of these (and an unnecessary LID_CHANGE event will be dispatched). This causes problems at least with IPoIB, which will do a "light" flush on reregister, rather than the "heavy" flush required due to a LID change. Fix this by dispatching a CLIENT_REREGISTER event if the client_reregister bit is set, but also compare the LID in the MAD to the current LID. If and only if they are not identical then a LID_CHANGE event is dispatched. Signed-off-by: Moni Shoua <monis@voltaire.com> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Yossi Etigin <yosefe@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-01-17IB: Remove __constant_{endian} usesHarvey Harrison1-11/+11
The base versions handle constant folding just fine, use them directly. The replacements are OK in the include/ files as they are not exported to userspace so we don't need the __ prefixed versions. This patch does not affect code generation at all. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-01-16IB/mlx4: Fix memory ordering problem when posting LSO sendsRoland Dreier1-9/+19
The current work request posting code writes the LSO segment before writing any data segments. This leaves a window where the LSO segment overwrites the stamping in one cacheline that the HCA prefetches before the rest of the cacheline is filled with the correct data segments. When the HCA processes this work request, a local protection error may result. Fix this by saving the LSO header size field off and writing it only after all data segments are written. This fix is a cleaned-up version of a patch from Jack Morgenstein <jackm@dev.mellanox.co.il>. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1383>. Reported-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-01-13Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infinibandLinus Torvalds1-4/+9
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/iser: Add dependency on INFINIBAND_ADDR_TRANS IPoIB: Do not join broadcast group if interface is brought down RDMA/nes: Fix for NIPQUAD removal IPoIB: Fix loss of connectivity after bonding failover on both sides IB/mlx4: Don't register IB device for adapters with no IB ports mlx4_core: Fix warning from min() IB/ehca: spin_lock_irqsave() takes an unsigned long
2009-01-09IB/mlx4: Don't register IB device for adapters with no IB portsRoland Dreier1-4/+9
If the mlx4_ib driver finds an adapter that has only ethernet ports, the current code will register an IB device with 0 ports. Nothing useful or sensible can be done with such a device, so just skip registering it. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-01-06trivial: fix then -> than typos in comments and documentationFrederik Schwarzer1-1/+1
- (better, more, bigger ...) then -> (...) than Signed-off-by: Frederik Schwarzer <schwarzerf@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-12-30IB/mlx4: Fix reading SL field out of cqe->sl_vidRoland Dreier1-1/+1
Commit f780a9f1 ("mlx4_core: Add ethernet fields to CQE struct") introduced a bug in how wc->sl is set in mlx4_ib_poll_one() -- since cqe->sl_vid is a big-endian value, the shift must be done after converting to host endianness. This bug was found using sparse endianness checking. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-12-24IB/mlx4: Set ownership bit correctly when copying CQEs during CQ resizeJack Morgenstein1-4/+6
When resizing a CQ, when copying over unpolled CQEs from the old CQE buffer to the new buffer, the ownership bit must be set appropriately for the new buffer, or the ownership bit in the new buffer gets corrupted. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-12-22mlx4_core: Add support for multiple completion event vectorsYevgeny Petrilin2-2/+2
When using MSI-X mode, create a completion event queue for each CPU. Report the number of completion EQs in a new struct mlx4_caps member, num_comp_vectors, and extend the mlx4_cq_alloc() interface with a vector parameter so that consumers can specify which completion EQ should be used to report events for the CQ being created. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-12-01IB/mlx4: Fix MTT leakage in resize CQJack Morgenstein1-0/+5
When resizing a CQ, MTTs associated with the old CQE buffer were not freed. As a result, if any app used resize CQ repeatedly, all MTTs were eventually exhausted, which led to all memory registration operations failing until the driver is reloaded. Once the RESIZE_CQ command returns successfully from FW, FW no longer accesses the old CQ buffer, so it is safe to deallocate the MTT entries used by the old CQ buffer. Finally, if the RESIZE_CQ command fails, the MTTs allocated for the new CQEs buffer also need to be de-allocated. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1416>. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-11-05IB/mlx4: Set umem field to NULL in mlx4_ib_alloc_fast_reg_mr()Vladimir Sokolovsky1-0/+1
Set mr->umem to NULL in mlx4_ib_alloc_fast_reg_mr(). Otherwise ib_dereg_mr() may invoke ib_umem_release() on a random pointer value and get an oops. Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-10-22mlx4_core: Multiple port type supportYevgeny Petrilin3-5/+13
Multi-protocol adapters support different port types. Each consumer of mlx4_core queries for supported port types; in particular mlx4_ib can no longer assume that all physical ports belong to it. Port type is configured through a sysfs interface. When the type of a port is changed, all mlx4 interfaces are unregistered, and then registered again with the new port types. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-10-10mlx4_core: Add QP range reservation supportYevgeny Petrilin1-2/+19
To allow allocating an aligned range of consecutive QP numbers, add an interface to reserve an aligned range of QP numbers and have the QP allocation function always take a QP number. This will be used for RSS support in the mlx4_en Ethernet driver and also potentially by IPoIB RSS support. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-10-08IB/mlx4: Set RLKEY bit for kernel QPsVladimir Sokolovsky1-0/+3
Set RLKEY bit in the HW context for kernel QPs so that kernel QPs can use the reserved L_Key for memory reference. Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-09-19Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infinibandLinus Torvalds1-0/+6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IPoIB: Fix deadlock on RTNL between bcast join comp and ipoib_stop() RDMA/nes: Fix client side QP destroy IB/mlx4: Fix up fast register page list format mlx4_core: Set RAE and init mtt_sz field in FRMR MPT entries
2008-09-15IB/mlx4: Fix up fast register page list formatVladimir Sokolovsky1-0/+6
Byte swap the addresses in the page list for fast register work requests to big endian to match what the HCA expectx. Also, the addresses must have the "present" bit set so that the HCA knows it can access them. Otherwise the HCA will fault the first time it accesses the memory region. Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-27IB/mlx4: Actually return L_Key and R_Key for fast register MRsVladimir Sokolovsky1-0/+2
Initialize the L_Key and R_Key for memory regions returned from mlx4_ib_alloc_fast_reg_mr(). Otherwise callers just get garbage for the memory keys and can't do anything useful with these MRs. Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-07IB/mlx4: Allow 4K messages for UD QPsAlex Naslednikov1-1/+1
Current code limits the max message size to 2K for UD QPs, while MTU might be as big as 4K. This patch sets the maximum message size to 4K, which is needed for UD to work correctly on fabrics with a 4K MTU. Signed-off-by: Alex Naslednikov <xalex@mellanox.co.il> Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-08-06mlx4_core: Add ethernet fields to CQE structYevgeny Petrilin1-17/+16
Add ethernet-related fields to struct mlx4_cqe so that the mlx4_en ethernet NIC driver can share the same definition. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-25mlx4: Update/add Mellanox Technologies copyright lines to mlx4 driver filesJack Morgenstein7-0/+7
Update existing Mellanox copyright lines to 2008, and add such lines to files where they are missing. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-23IB/mlx4: Add support for memory management extensions and local DMA L_KeyRoland Dreier5-5/+175
Add support for the following operations to mlx4 when device firmware supports them: - Send with invalidate and local invalidate send queue work requests; - Allocate/free fast register MRs; - Allocate/free fast register MR page lists; - Fast register MR send queue work requests; - Local DMA L_Key. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-22IB/mlx4: Rename struct mlx4_lso_seg to mlx4_wqe_lso_segRoland Dreier1-1/+1
Make the struct name consistent with other WQE segment struct types defined in <linux/mlx4/qp.h>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14IB/mlx4: Use kzalloc() for new QPs so flags are initialized to 0Eli Cohen1-13/+2
Current code uses kmalloc() and then just does a bitwise OR operation on qp->flags in create_qp_common(), which means that qp->flags may potentially have some unintended bits set. This patch uses kzalloc() and avoids further explicit clearing of structure members, which also shrinks the code: add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-65 (-65) function old new delta create_qp_common 2024 1959 -65 Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14IB/mlx4: Add support for blocking multicast loopback packetsRon Livne3-6/+25
Add support for handling the IB_QP_CREATE_MULTICAST_BLOCK_LOOPBACK flag by using the per-multicast group loopback blocking feature of mlx4 hardware. Signed-off-by: Ron Livne <ronli@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14IB/mlx4: Remove extra code for RESET->ERR QP state transitionRoland Dreier1-26/+0
Commit 65adfa91 ("IB/mlx4: Fix RESET to RESET and RESET to ERROR transitions") added some extra code to handle a QP state transition from RESET to ERROR. However, the latest 1.2.1 version of the IB spec has clarified that this transition is actually not allowed, so we can remove this extra code again. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14IB/mlx4: Pass congestion management class MADs to the HCAEli Cohen1-1/+2
ConnectX HCAs support the IB_MGMT_CLASS_CONG_MGMT management class, so process MADs of this class through the MAD_IFC firmware command. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14IB/mlx4: Configure QPs' max message size based on real device capabilityEli Cohen1-1/+2
ConnectX returns the max message size it supports through the QUERY_DEV_CAP firmware command. When modifying a QP to RTR, the max message size for the QP must be specified. This value must not exceed the value declared through QUERY_DEV_CAP. The current code ignores the max allowed size and unconditionally sets the value to 2^31. This patch sets all QPs to the max value allowed as returned from firmware. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14RDMA/core: Add memory management extensions supportSteve Wise1-6/+6
This patch adds support for the IB "base memory management extension" (BMME) and the equivalent iWARP operations (which the iWARP verbs mandates all devices must implement). The new operations are: - Allocate an ib_mr for use in fast register work requests. - Allocate/free a physical buffer lists for use in fast register work requests. This allows device drivers to allocate this memory as needed for use in posting send requests (eg via dma_alloc_coherent). - New send queue work requests: * send with remote invalidate * fast register memory region * local invalidate memory region * RDMA read with invalidate local memory region (iWARP only) Consumer interface details: - A new device capability flag IB_DEVICE_MEM_MGT_EXTENSIONS is added to indicate device support for these features. - New send work request opcodes IB_WR_FAST_REG_MR, IB_WR_LOCAL_INV, IB_WR_RDMA_READ_WITH_INV are added. - A new consumer API function, ib_alloc_mr() is added to allocate fast register memory regions. - New consumer API functions, ib_alloc_fast_reg_page_list() and ib_free_fast_reg_page_list() are added to allocate and free device-specific memory for fast registration page lists. - A new consumer API function, ib_update_fast_reg_key(), is added to allow the key portion of the R_Key and L_Key of a fast registration MR to be updated. Consumers call this if desired before posting a IB_WR_FAST_REG_MR work request. Consumers can use this as follows: - MR is allocated with ib_alloc_mr(). - Page list memory is allocated with ib_alloc_fast_reg_page_list(). - MR R_Key/L_Key "key" field is updated with ib_update_fast_reg_key(). - MR made VALID and bound to a specific page list via ib_post_send(IB_WR_FAST_REG_MR) - MR made INVALID via ib_post_send(IB_WR_LOCAL_INV), ib_post_send(IB_WR_RDMA_READ_WITH_INV) or an incoming send with invalidate operation. - MR is deallocated with ib_dereg_mr() - page lists dealloced via ib_free_fast_reg_page_list(). Applications can allocate a fast register MR once, and then can repeatedly bind the MR to different physical block lists (PBLs) via posting work requests to a send queue (SQ). For each outstanding MR-to-PBL binding in the SQ pipe, a fast_reg_page_list needs to be allocated (the fast_reg_page_list is owned by the low-level driver from the consumer posting a work request until the request completes). Thus pipelining can be achieved while still allowing device-specific page_list processing. The 32-bit fast register memory key/STag is composed of a 24-bit index and an 8-bit key. The application can change the key each time it fast registers thus allowing more control over the peer's use of the key/STag (ie it can effectively be changed each time the rkey is rebound to a page list). Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14IB/mlx4: Optimize QP stampingEli Cohen1-2/+6
The idea is that for QPs with fixed size work requests (eg selective signaling QPs), before stamping the WQE, we read the value of the DS field, which gives the effective size of the descriptor as used in the previous post. Then we stamp only that area, since the rest of the descriptor is already stamped. When initializing the send queue buffer, make sure the DS field is initialized to the max descriptor size so that the subsequent stamping will be done on the entire descriptor area. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-05-20IB/mlx4: Fix creation of kernel QP with max number of send s/g entriesRoland Dreier1-5/+8
When creating a kernel QP where the consumer asked for a send queue with lots of scatter/gater entries, set_kernel_sq_size() incorrectly returned an error if the send queue stride is larger than the hardware's maximum send work request descriptor size. This is not a problem; the only issue is to make sure that the actual descriptors used do not overflow the maximum descriptor size, so check this instead. Clamp the returned max_send_sge value to be no bigger than what query_device returns for the max_sge to avoid confusing hapless users, even if the hardware is capable of handling a few more s/g entries. This bug caused NFS/RDMA mounts to fail when the server adapter used the mlx4 driver. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-05-16IB/mlx4: Fix uninitialized-var warning in mlx4_ib_post_send()Andrew Morton1-1/+1
drivers/infiniband/hw/mlx4/qp.c: In function 'mlx4_ib_post_send': drivers/infiniband/hw/mlx4/qp.c:1460: warning: 'seglen' may be used uninitialized in this function This is the dopey gcc-doesn't-know-that-foo(&var)-writes-to-var problem. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-30IB/mlx4: Fix off-by-one errors in calls to mlx4_ib_free_cq_buf()Roland Dreier1-2/+2
When I merged bbf8eed1 ("IB/mlx4: Add support for resizing CQs") I changed things around so that mlx4_ib_alloc_cq_buf() and mlx4_ib_free_cq_buf() were used everywhere they could be. However, I screwed up the number of entries passed into mlx4_ib_alloc_cq_buf() in a couple places -- the function bumps the number of entries internally, so the caller shouldn't add 1 as well. Passing a too-big value for the number of entries to mlx4_ib_free_cq_buf() can cause the cleanup to go off the end of an array and corrupt allocator state in interesting ways. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29mlx4_core: Add a way to set the "collapsed" CQ flagYevgeny Petrilin1-1/+1
Extend the mlx4_cq_resize() API with a way to set the "collapsed" flag for the CQ being created. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29IB: expand ib_umem_get() prototypeArthur Kepner5-5/+6
Add a new parameter, dmasync, to the ib_umem_get() prototype. Use dmasync = 1 when mapping user-allocated CQs with ib_umem_get(). Signed-off-by: Arthur Kepner <akepner@sgi.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Jes Sorensen <jes@sgi.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Roland Dreier <rdreier@cisco.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Grundler <grundler@parisc-linux.org> Cc: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-23mlx4_core: Move kernel doorbell management into coreYevgeny Petrilin6-160/+16
In addition to mlx4_ib, there will be ethernet and FC consumers of mlx4_core, so move the code for managing kernel doorbells into the core module to avoid having to duplicate this multiple times. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-19IB: convert struct class_device to struct deviceTony Jones1-20/+29
This converts the main ib_device to use struct device instead of struct class_device as class_device is going away. Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-16IB/mlx4: Update module version and release dateJack Morgenstein1-2/+2
The mlx4_ib driver is stable enough for production use, so bump the version number to 1.0 to indicate this. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/mlx4: Update QP state if query QP succeedsDotan Barak1-5/+12
If the QP was moved to another state (such as SQE) by the hardware, then after this change the user won't have to set the IBV_QP_CUR_STATE mask in order to execute modify QP in order to recover from this state. Signed-off-by: Dotan Barak <dotanb@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/mlx4: Add support for resizing CQsVladimir Sokolovsky3-33/+270
Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/mlx4: Add support for modifying CQ moderation parametersEli Cohen3-0/+10
Signed-off-by: Eli Cohen <eli@mellnaox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/core: Add support for "send with invalidate" work requestsRoland Dreier1-2/+2
Add a new IB_WR_SEND_WITH_INV send opcode that can be used to mark a "send with invalidate" work request as defined in the iWARP verbs and the InfiniBand base memory management extensions. Also put "imm_data" and a new "invalidate_rkey" member in a new "ex" union in struct ib_send_wr. The invalidate_rkey member can be used to pass in an R_Key/STag to be invalidated. Add this new union to struct ib_uverbs_send_wr. Add code to copy the invalidate_rkey field in ib_uverbs_post_send(). Fix up low-level drivers to deal with the change to struct ib_send_wr, and just remove the imm_data initialization from net/sunrpc/xprtrdma/, since that code never does any send with immediate operations. Also, move the existing IB_DEVICE_SEND_W_INV flag to a new bit, since the iWARP drivers currently in the tree set the bit. The amso1100 driver at least will silently fail to honor the IB_SEND_INVALIDATE bit if passed in as part of userspace send requests (since it does not implement kernel bypass work request queueing). Remove the flag from all existing drivers that set it until we know which ones are OK. The values chosen for the new flag is not consecutive to avoid clashing with flags defined in the XRC patches, which are not merged yet but which are already in use and are likely to be merged soon. This resurrects a patch sent long ago by Mikkel Hagen <mhagen@iol.unh.edu>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-16IB/mlx4: Micro-optimize mlx4_ib_post_send()Roland Dreier1-8/+8
Rather than have build_mlx_header() return a negative value on failure and the length of the segments it builds on success, add a pointer parameter to return the length and return 0 on success. This matches the calling convention used for build_lso_seg() and generates slightly smaller code -- eg, on 64-bit x86: add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-22 (-22) function old new delta mlx4_ib_post_send 2023 2001 -22 Signed-off-by: Roland Dreier <rolandd@cisco.com>
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