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* IB/core: Temporarily disable create_flow/destroy_flow uverbsYann Droneaud2013-10-211-0/+2
| | | | | | | | | | | | | | | | | | | | The create_flow/destroy_flow uverbs and the associated extensions to the user-kernel verbs ABI are under review and are too experimental to freeze at this point. So userspace is not exposed to experimental features and an uinstable ABI, temporarily disable this for v3.12 (with a Kconfig option behind staging to reenable it if desired). The feature will be enabled after proper cleanup for v3.13. Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Link: http://marc.info/?i=cover.1381351016.git.ydroneaud@opteya.com Link: http://marc.info/?i=cover.1381177342.git.ydroneaud@opteya.com [ Add a Kconfig option to reenable these verbs. - Roland ] Signed-off-by: Roland Dreier <roland@purestorage.com>
* Merge branch 'misc' into for-nextRoland Dreier2013-10-145-9/+9
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| * IB: Remove unnecessary semicolonsJoe Perches2013-10-145-9/+9
| | | | | | | | | | | | | | These aren't necessary after switch blocks. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Ensure proper synchronization accessing memoryEli Cohen2013-10-101-3/+4
| | | | | | | | | | | | | | | | | | Call mlx5_ib_populate_pas() before mapping the DMA buffer to ensure the hardware reads the values written by the CPU. Found by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Fix alignment of reg umr gather buffersEli Cohen2013-10-101-3/+8
| | | | | | | | | | | | | | | | The hardware requires that gather buffers for UMR work requests be aligned to 2K. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Fix eq names to display nicely in /proc/interruptsSagi Grimberg2013-10-101-3/+3
| | | | | | | | | | | | | | | | | | It's helpful for a driver to put the pci slot name in its interrupt names, so /proc/interrupts will show the pci slot of the device. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Fix opt param mask according to firmware specEli Cohen2013-10-101-0/+9
| | | | | | | | | | | | | | Failed to configure opt mask to configure rre from init to rtr. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | mlx5: Fix opt param mask for sq err to rts transitionEli Cohen2013-10-101-0/+1
| | | | | | | | | | | | | | Add missing entry in the table for UC transport. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Disable atomic operationsEli Cohen2013-10-102-47/+6
| | | | | | | | | | | | | | | | Currently Atomic operations don't work properly. Disable them for the time being. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Avoid async events on invalid port numberEli Cohen2013-10-101-0/+5
| | | | | | | | | | | | | | | | | | On a single ported Connect-IB, its possible for the firmware to issue events on the non-existing 2nd port. Make sure to ignore events generated for such ports. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Decrease memory consumption of mr cachesEli Cohen2013-10-101-35/+22
| | | | | | | | | | | | | | | | | | Change the logic so we do not allocate memory nor map the device before actually posting to the REG_UMR QP. In addition, unmap and free the memory after we get completion. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Fix memory leak in mlx5_ib_create_srqMoshe Lazer2013-10-101-1/+3
| | | | | | | | | | | | | | | | The patch fixes the rollback in case of failure in creating SRQ. Signed-off-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Flush cache workqueue before destroying itMoshe Lazer2013-10-101-1/+4
| | | | | | | | | | | | | | | | | | | | Destroying the workqueue without flushing it first can lead to a case in which the kernel tries to push a delayed work to the workqueue which does not exist anymore. Signed-off-by: Moshe Lazer <moshel@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | IB/mlx5: Fix send work queue size calculationEli Cohen2013-10-101-6/+16
|/ | | | | | | | | | | | | | 1. Make sure wqe_cnt does not exceed the limit published by firmware. 2. There is no requirement that the number of outstanding work requests will be a power of two. Remove the ilog2 in the calculation of sq.max_post to fix that. 3. Add case for IB_QPT_XRC_TGT in sq_overhead and return 0 as XRC target QPs do not have a send queue. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* Remove GENERIC_HARDIRQ config optionMartin Schwidefsky2013-09-131-1/+1
| | | | | | | | After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-09-061-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "The usual trivial updates all over the tree -- mostly typo fixes and documentation updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (52 commits) doc: Documentation/cputopology.txt fix typo treewide: Convert retrun typos to return Fix comment typo for init_cma_reserved_pageblock Documentation/trace: Correcting and extending tracepoint documentation mm/hotplug: fix a typo in Documentation/memory-hotplug.txt power: Documentation: Update s2ram link doc: fix a typo in Documentation/00-INDEX Documentation/printk-formats.txt: No casts needed for u64/s64 doc: Fix typo "is is" in Documentations treewide: Fix printks with 0x%# zram: doc fixes Documentation/kmemcheck: update kmemcheck documentation doc: documentation/hwspinlock.txt fix typo PM / Hibernate: add section for resume options doc: filesystems : Fix typo in Documentations/filesystems scsi/megaraid fixed several typos in comments ppc: init_32: Fix error typo "CONFIG_START_KERNEL" treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks page_isolation: Fix a comment typo in test_pages_isolated() doc: fix a typo about irq affinity ...
| * treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacksJoe Perches2013-08-201-1/+2
| | | | | | | | | | | | | | | | | | | | | | Don't emit OOM warnings when k.alloc calls fail when there there is a v.alloc immediately afterwards. Converted a kmalloc/vmalloc with memset to kzalloc/vzalloc. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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*-----. \ Merge branches 'cxgb4', 'flowsteer', 'ipoib', 'iser', 'mlx4', 'ocrdma' and ↵Roland Dreier2013-09-0319-768/+2090
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | 'qib' into for-next
| | | | * | IB/qib: Move COUNTER_MASK definition within qib_mad.h header guardsIra Weiny2013-09-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 36a8f01cd24b ("IB/qib: Add congestion control agent implementation") caused statements to leak pass the header guard. Fix this. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | | * | IB/qib: Clean up unnecessary MSI/MSI-X capability findYijing Wang2013-08-131-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCI core will initialize device MSI/MSI-X capability in pci_msi_init_pci_dev(). So device drivers should use pci_dev->msi_cap/msix_cap to determine whether a device supports MSI/MSI-X instead of using pci_find_capability(pci_dev, PCI_CAP_ID_MSI/MSIX). Access to PCIe device config space again will consume more time. Signed-off-by: Yijing Wang <wangyijing@huawei.com> Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | | * | IB/qib: Make qib_driver staticPaul Bolle2013-08-132-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | struct pci_driver qib_driver is only used in qib_init.c. Remove it from qib.h and make it static in qib_init.c. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | | * | IB/qib: Improve SDMA performanceCQ Tang2013-08-135-227/+728
| | | |/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. The code accepts chunks of messages, and splits the chunk into packets when converting packets into sdma queue entries. Adjacent packets will use user buffer pages smartly to avoid pinning the same page multiple times. 2. Instead of discarding all the work when SDMA queue is full, the work is saved in a pending queue. Whenever there are enough SDMA queue free entries, pending queue is directly put onto SDMA queue. 3. An interrupt handler is used to progress this pending queue. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: CQ Tang <cq.tang@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> [ Fixed up sparse warnings. - Roland ] Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Fix compiler warning about int/pointer size mismatchRoland Dreier2013-09-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix: drivers/infiniband/hw/ocrdma/ocrdma_verbs.c: In function 'ocrdma_build_fr': >> drivers/infiniband/hw/ocrdma/ocrdma_verbs.c:1832:7: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] mr = (struct ocrdma_mr *)qp->dev->stag_arr[(hdr->lkey >> 8) & ^ drivers/infiniband/hw/ocrdma/ocrdma_verbs.c: In function 'ocrdma_alloc_frmr': >> drivers/infiniband/hw/ocrdma/ocrdma_verbs.c:2661:64: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] = (u64) mr; Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Fix passing wrong opcode to modify_srqNaresh Gottumukkala2013-09-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix passing wrong opcode to ocrdma_modify_srq and query SRQ. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Fill PVID in UMC caseNaresh Gottumukkala2013-09-024-3/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In UMC case, driver needs to fill PVID in the address vector template for UD traffic. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Add ABI versioning supportNaresh Gottumukkala2013-09-022-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add ABI versioning support between driver and userspace library. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Consider multiple SGES in case of DPPNaresh Gottumukkala2013-09-021-7/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While posting inline DPP data, we are not considering multiple sges. Fix this. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Fix for displaying proper link speedNaresh Gottumukkala2013-09-024-2/+97
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Increase STAG array sizeNaresh Gottumukkala2013-09-023-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Increase STAG Array size. 2) Max inline data size should be set to the same value used during QP creation 3) Set max_sge_rd to zero since we dont support RD transport in our adapters. 4) Max cqes reported in ibv_devinfo should be from QUERY_CONFIG. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Dont use PD 0 for userpace CQ DBNaresh Gottumukkala2013-09-026-40/+339
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create_CQ verb doesn't provide a PD pointer. So, until now we are creating all (both userspace and kernel) CQ DB regions from PD0. This will result in mmapping PD0 to applications. A rogue userspace application can mess things up. Also more serious issues is even the be2net NIC uses PD0. This patch addresses this problem by: 1) Create a PD page for every userspace application when the alloc_ucontext is called. This will be destroyed in dealloc_ucontext. 2) All CQs for that context will use the PD allocated in ucontext. 3) The first create_PD call from application will result in returning the PD address from its ucontext (no new PD will be created). 4) For subsecquent create_pd calls from application, we create new PDs for the application. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: FRMA code cleanupNaresh Gottumukkala2013-09-024-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Fixed setting FR_MR bit for FRWR stag allocation 2) Access rights are passsed during FRWR stage and not during STAT allocation stage 3) FRWR WQE structure cleanup 4) Add QP level signaled bit. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: For ERX2 irrespective of Qid, num_posted offset is 24Naresh Gottumukkala2013-09-024-14/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) All RQ doorbells are handled by ERX2 and doorbell->num_posted offset is constant to bit offset 24 for ERX2 irrspective of Q id. 2) Fixed RESET to INIT state change (from ERR->RST->INIT->RTR case). Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Fix to work with even a single MSI-X vectorNaresh Gottumukkala2013-09-022-100/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are cases like SRIOV where can get only one MSI-X vector allocated for RoCE. In that case we need to use the vector for both data plane and control plane. We need to use EQ create version V2. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Remove the MTU check based on Ethernet MTUNaresh Gottumukkala2013-09-022-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also increase MAX AH to 512. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Add support for fast register work requests (FRWR)Naresh Gottumukkala2013-09-026-3/+192
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also get the max_srq value from query_config mailbox response. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Create IRD queue fixNaresh Gottumukkala2013-09-023-47/+73
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Fix ocrdma_get_num_posted_shift for upto 128 QPs. 2) Create for min of dev->max_wqe and requested wqe in create_qp. 3) As part of creating ird queue, populate with basic header templates. 4) Make sure all the DB memory allocated to userspace are page aligned. 5) Fix issue in checking the mmap local cache. 6) Some code cleanup. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Cache recv DB until QP moved to RTRNaresh Gottumukkala2013-08-124-7/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) In post recv, don't ring the DB doorbell if the QP is in RTR state. Cache the DB calls, until the QP is moved to RTS state. 2) Add max_rd_sge support to dev->attr. 3) Code cleanup in alloc_pd path. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Remove __packedNaresh Gottumukkala2013-08-122-80/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Remove __packed for structures. 2) Align and pad all ABI structure to 64 bit boundaries instead of using __packed. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Remove driver QP state machineNaresh Gottumukkala2013-08-123-96/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove QP state machine in ocrdma low-level driver and use on the core IB stack's instead. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Don't allow zero/invalid sgid usageNaresh Gottumukkala2013-08-121-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Remove redundant dev referenceNaresh Gottumukkala2013-08-125-63/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove redundant dev reference from structures: 1) ocrdma_cq. 2) ocrdma_ah. 3) ocrdma_hw_mr. 4) ocrdma_mw. 5) ocrdma_srq. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | | * | RDMA/ocrdma: Style and redundant code cleanupNaresh Gottumukkala2013-08-124-90/+96
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Code cleanup and remove redundant code: 1) redundant initialization removed 2) braces changed as per CodingStyle. 3) redundant checks removed 4) extra braces in return statements removed. 5) removed unused pd pointer from mr. 6) reorganized get_dma_mr() 7) fixed set_av() to return error on invalid sgid index. 8) reference to ocrdma_dev removed from struct ocrdma_pd. Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * | | IB/mlx4: Add receive flow steering supportHadar Hen Zion2013-08-282-0/+247
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement ib_create_flow() and ib_destroy_flow(). Translate the verbs structures provided by the user to HW structures and call the MLX4_QP_FLOW_STEERING_ATTACH/DETACH firmware commands. On the ATTACH command completion, the firmware provides a 64-bit registration ID, which is placed into struct mlx4_ib_flow that wraps the instance of struct ib_flow which is retuned to caller. Later, this reg ID is used for detaching that flow from the firmware. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Issue RI.FINI before closing when entering TERMSteve Wise2013-08-131-1/+6
| | | | | | | | | | | | | | | | | | Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Advertise ~0ULL as max MR sizeSteve Wise2013-08-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Lustre uses a advertised max MR size of ~0ULL to indicate it should use a dma_mr. Hence advertise max MR size as ~0ULL. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Always do GTS write if cidx_inc == CIDXINC_MASKSteve Wise2013-08-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When polling, we do a GTS update if the accumulated cidx_inc == the CQ depth / 16. However, if the CQ is large enough, Cq depth / 16 exceeds the size of the field in the GTS word. So we also need to update if cidx_inc hits CIDXINC_MASK to avoid overflowing the field. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Set arp error handler for PASS_ACCEPT_RPL messagesSteve Wise2013-08-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | accept_cr() failed to set the arp error handler on a reused skb. This results in a kernel crash if the arp does indeed time out. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Fix accounting for unsignaled SQ WRs to deal with wrapSteve Wise2013-08-131-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | When determining how many WRs are completed with a signaled CQE, correctly deal with queue wraps. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Fix QP flush logicSteve Wise2013-08-134-136/+254
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes following fixes in QP flush logic: - correctly flushes unsignaled WRs followed by a signaled WR - supports for flushing a CQ bound to multiple QPs - resets cidx_flush if a active queue starts getting HW CQEs again - marks WQ in error when we leave RTS. This was only being done for user queues, but we need it for kernel queues too so that post_send/post_recv will start returning the appropriate error synchronously - eats unsignaled read resp CQEs. HW always inserts CQEs so we must silently discard them if the read work request was unsignaled. - handles QP flushes with pending SW CQEs. The flush and out of order completion logic has a bug where if out of order completions are flushed but not yet polled by the consumer and the qp is then flushed then we end up inserting duplicate completions. - c4iw_flush_sq() should only flush wrs that have not already been flushed. Since we already track where in the SQ we've flushed via sq.cidx_flush, just start at that point and flush any remaining. This bug only caused a problem in the presence of unsignaled work requests. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> [ Fixed sparse warning due to htonl/ntohl confusion. - Roland ] Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | RDMA/cxgb4: Handle newer firmware changesSteve Wise2013-08-132-13/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move QP to TERMINATE instead to allow the peer to get the TERM message. This bug wasn't detectable until newer FW that moves connections out of RDMA mode as soon as an error is detected. QP can exit RTS before the last AE arrives. This was introduced by changes in the FW to kick connections out of RDMA mode as soon as an error is detected. A side effect of this is that the driver can move the QP out of RTS before the AE causing the connection to get kicked out of RDMA mode is processed. Fix for this is to always post async errors even if the QP is out of RTS. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
generated by cgit v1.1 at 2025-08-15 10:02:54 +0000