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* treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner2019-05-21
| | | | | | | | | | | | | | Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds2019-05-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull rdma updates from Jason Gunthorpe: "This has been a smaller cycle than normal. One new driver was accepted, which is unusual, and at least one more driver remains in review on the list. Summary: - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4, vmw_pvrdma - Many patches from MatthewW converting radix tree and IDR users to use xarray - Introduction of tracepoints to the MAD layer - Build large SGLs at the start for DMA mapping and get the driver to split them - Generally clean SGL handling code throughout the subsystem - Support for restricting RDMA devices to net namespaces for containers - Progress to remove object allocation boilerplate code from drivers - Change in how the mlx5 driver shows representor ports linked to VFs - mlx5 uapi feature to access the on chip SW ICM memory - Add a new driver for 'EFA'. This is HW that supports user space packet processing through QPs in Amazon's cloud" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits) RDMA/ipoib: Allow user space differentiate between valid dev_port IB/core, ipoib: Do not overreact to SM LID change event RDMA/device: Don't fire uevent before device is fully initialized lib/scatterlist: Remove leftover from sg_page_iter comment RDMA/efa: Add driver to Kconfig/Makefile RDMA/efa: Add the efa module RDMA/efa: Add EFA verbs implementation RDMA/efa: Add common command handlers RDMA/efa: Implement functions that submit and complete admin commands RDMA/efa: Add the ABI definitions RDMA/efa: Add the com service API definitions RDMA/efa: Add the efa_com.h file RDMA/efa: Add the efa.h header file RDMA/efa: Add EFA device definitions RDMA: Add EFA related definitions RDMA/umem: Remove hugetlb flag RDMA/bnxt_re: Use core helpers to get aligned DMA address RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks RDMA/umem: Add API to find best driver supported page size in an MR ...
| * RDMA: Introduce and use GID attr helper to read RoCE L2 fieldsParav Pandit2019-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of RoCE drivers figuring out vlan, smac fields while working on QP/AH, provide a helper routine to read the L2 fields such as vlan_id and source mac address. This moves logic from mlx5 driver to core for wider usage for RoCE ports. This is a preparation patch to allow detaching netdev in subsequent patch. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Handle SRQ allocations by IB/coreLeon Romanovsky2019-04-08
| | | | | | | | | | | | | | Convert SRQ allocation from drivers to be in the IB/core Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Handle AH allocations by IB/coreLeon Romanovsky2019-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Simplify drivers by ensuring lifetime of ib_ah object. The changes in .create_ah() go hand in hand with relevant update in .destroy_ah(). We will use this opportunity and convert .destroy_ah() to don't fail, as it was suggested a long time ago, because there is nothing to do in case of failure during destroy. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB: Pass only ib_udata in function prototypesShamir Rabinovitch2019-04-01
| | | | | | | | | | | | | | | | | | | | | | Now when ib_udata is passed to all the driver's object create/destroy APIs the ib_udata will carry the ib_ucontext for every user command. There is no need to also pass the ib_ucontext via the functions prototypes. Make ib_udata the only argument psssed. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB: Remove 'uobject->context' dependency in object destroy APIsShamir Rabinovitch2019-04-01
| | | | | | | | | | | | | | | | | | | | | | Now that we have the udata passed to all the ib_xxx object destroy APIs and the additional macro 'rdma_udata_to_drv_context' to get the ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally start to remove the dependency of the drivers in the ib_xxx->uobject->context. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB: Pass uverbs_attr_bundle down ib_x destroy pathShamir Rabinovitch2019-04-01
| | | | | | | | | | | | | | | | | | | | The uverbs_attr_bundle with the ucontext is sent down to the drivers ib_x destroy path as ib_udata. The next patch will use the ib_udata to free the drivers destroy path from the dependency in 'uobject->context' as we already did for the create path. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * mlx4: Convert pv_id_table to XArrayMatthew Wilcox2019-03-26
| | | | | | | | | | | | Signed-off-by: Matthew Wilcox <willy@infradead.org> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* | drivers: Remove explicit invocations of mmiowb()Will Deacon2019-04-08
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | mmiowb() is now implied by spin_unlock() on architectures that require it, so there is no reason to call it from driver code. This patch was generated using coccinelle: @mmiowb@ @@ - mmiowb(); and invoked as: $ for d in drivers include/linux/qed sound; do \ spatch --include-headers --sp-file mmiowb.cocci --dir $d --in-place; done NOTE: mmiowb() has only ever guaranteed ordering in conjunction with spin_unlock(). However, pairing each mmiowb() removal in this patch with the corresponding call to spin_unlock() is not at all trivial, so there is a small chance that this change may regress any drivers incorrectly relying on mmiowb() to order MMIO writes between CPUs using lock-free synchronisation. If you've ended up bisecting to this commit, you can reintroduce the mmiowb() calls using wmb() instead, which should restore the old behaviour on all architectures other than some esoteric ia64 systems. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
* IB/mlx4: Fix race condition between catas error reset and aliasguid flowsJack Morgenstein2019-03-17
| | | | | | | | | | | | Code review revealed a race condition which could allow the catas error flow to interrupt the alias guid query post mechanism at random points. Thiis is fixed by doing cancel_delayed_work_sync() instead of cancel_delayed_work() during the alias guid mechanism destroy flow. Fixes: a0c64a17aba8 ("mlx4: Add alias_guid mechanism") Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds2019-03-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull rdma updates from Jason Gunthorpe: "This has been a slightly more active cycle than normal with ongoing core changes and quite a lot of collected driver updates. - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe - A new data transfer mode for HFI1 giving higher performance - Significant functional and bug fix update to the mlx5 On-Demand-Paging MR feature - A chip hang reset recovery system for hns - Change mm->pinned_vm to an atomic64 - Update bnxt_re to support a new 57500 chip - A sane netlink 'rdma link add' method for creating rxe devices and fixing the various unregistration race conditions in rxe's unregister flow - Allow lookup up objects by an ID over netlink - Various reworking of the core to driver interface: - drivers should not assume umem SGLs are in PAGE_SIZE chunks - ucontext is accessed via udata not other means - start to make the core code responsible for object memory allocation - drivers should convert struct device to struct ib_device via a helper - drivers have more tools to avoid use after unregister problems" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits) net/mlx5: ODP support for XRC transport is not enabled by default in FW IB/hfi1: Close race condition on user context disable and close RDMA/umem: Revert broken 'off by one' fix RDMA/umem: minor bug fix in error handling path RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp cxgb4: kfree mhp after the debug print IB/rdmavt: Fix concurrency panics in QP post_send and modify to error IB/rdmavt: Fix loopback send with invalidate ordering IB/iser: Fix dma_nents type definition IB/mlx5: Set correct write permissions for implicit ODP MR bnxt_re: Clean cq for kernel consumers only RDMA/uverbs: Don't do double free of allocated PD RDMA: Handle ucontext allocations by IB/core RDMA/core: Fix a WARN() message bnxt_re: fix the regression due to changes in alloc_pbl IB/mlx4: Increase the timeout for CM cache IB/core: Abort page fault handler silently during owning process exit IB/mlx5: Validate correct PD before prefetch MR IB/mlx5: Protect against prefetch of invalid MR RDMA/uverbs: Store PR pointer before it is overwritten ...
| * RDMA: Handle ucontext allocations by IB/coreLeon Romanovsky2019-02-22
| | | | | | | | | | | | | | Following the PD conversion patch, do the same for ucontext allocations. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/mlx4: Increase the timeout for CM cacheHåkon Bugge2019-02-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using CX-3 virtual functions, either from a bare-metal machine or pass-through from a VM, MAD packets are proxied through the PF driver. Since the VF drivers have separate name spaces for MAD Transaction Ids (TIDs), the PF driver has to re-map the TIDs and keep the book keeping in a cache. Following the RDMA Connection Manager (CM) protocol, it is clear when an entry has to evicted form the cache. But life is not perfect, remote peers may die or be rebooted. Hence, it's a timeout to wipe out a cache entry, when the PF driver assumes the remote peer has gone. During workloads where a high number of QPs are destroyed concurrently, excessive amount of CM DREQ retries has been observed The problem can be demonstrated in a bare-metal environment, where two nodes have instantiated 8 VFs each. This using dual ported HCAs, so we have 16 vPorts per physical server. 64 processes are associated with each vPort and creates and destroys one QP for each of the remote 64 processes. That is, 1024 QPs per vPort, all in all 16K QPs. The QPs are created/destroyed using the CM. When tearing down these 16K QPs, excessive CM DREQ retries (and duplicates) are observed. With some cat/paste/awk wizardry on the infiniband_cm sysfs, we observe as sum of the 16 vPorts on one of the nodes: cm_rx_duplicates: dreq 2102 cm_rx_msgs: drep 1989 dreq 6195 rep 3968 req 4224 rtu 4224 cm_tx_msgs: drep 4093 dreq 27568 rep 4224 req 3968 rtu 3968 cm_tx_retries: dreq 23469 Note that the active/passive side is equally distributed between the two nodes. Enabling pr_debug in cm.c gives tons of: [171778.814239] <mlx4_ib> mlx4_ib_multiplex_cm_handler: id{slave: 1,sl_cm_id: 0xd393089f} is NULL! By increasing the CM_CLEANUP_CACHE_TIMEOUT from 5 to 30 seconds, the tear-down phase of the application is reduced from approximately 90 to 50 seconds. Retries/duplicates are also significantly reduced: cm_rx_duplicates: dreq 2460 [] cm_tx_retries: dreq 3010 req 47 Increasing the timeout further didn't help, as these duplicates and retries stems from a too short CMA timeout, which was 20 (~4 seconds) on the systems. By increasing the CMA timeout to 22 (~17 seconds), the numbers fell down to about 10 for both of them. Adjustment of the CMA timeout is not part of this commit. Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com> Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIsShamir Rabinovitch2019-02-15
| | | | | | | | | | | | | | | | | | | | | | Now when we have the udata passed to all the ib_xxx object creation APIs and the additional macro 'rdma_udata_to_drv_context' to get the ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally start to remove the dependency of the drivers in the ib_xxx->uobject->context. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Handle PD allocations by IB/coreLeon Romanovsky2019-02-08
| | | | | | | | | | | | | | | | | | | | | | | | | | The PD allocations in IB/core allows us to simplify drivers and their error flows in their .alloc_pd() paths. The changes in .alloc_pd() go hand in had with relevant update in .dealloc_pd(). We will use this opportunity and convert .dealloc_pd() to don't fail, as it was suggested a long time ago, failures are not happening as we have never seen a WARN_ON print. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * Merge tag 'v5.0-rc5' into rdma.git for-nextJason Gunthorpe2019-02-04
| |\ | | | | | | | | | | | | | | | | | | | | | Linux 5.0-rc5 Needed to merge the include/uapi changes so we have an up to date single-tree for these files. Patches already posted are also expected to need this for dependencies.
| * | RDMA: Provide safe ib_alloc_device() functionLeon Romanovsky2019-01-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All callers to ib_alloc_device() provide a larger size than struct ib_device and rely on the fact that struct ib_device is embedded in their driver specific structure as the first member. Provide a safer variant of ib_alloc_device() that checks and enforces this approach to make sure the drivers are using it right. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA: Introduce and use rdma_device_to_ibdev()Parav Pandit2019-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce and use rdma_device_to_ibdev() API for those drivers which are registering one sysfs group and also use in ib_core. In subsequent patch, device->provider_ibdev one-to-one mapping is no longer holds true during accessing sysfs entries. Therefore, introduce an API rdma_device_to_ibdev() that provides such information. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA: Rename port_callback to init_portParav Pandit2019-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most provider routines are callback routines which ib core invokes. _callback suffix doesn't convey information about when such callback is invoked. Therefore, rename port_callback to init_port. Additionally, store the init_port function pointer in ib_device_ops, so that it can be accessed in subsequent patches when binding rdma device to net namespace. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | RDMA: Clear CQ objects during their allocationLeon Romanovsky2019-01-10
| | | | | | | | | | | | | | | | | | | | | | | | As part of an audit process to update drivers to use rdma_restrack_add() ensure that CQ objects is cleared before access. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * | IB/{core,hw}: Have ib_umem_get extract the ib_ucontext from ib_udataJason Gunthorpe2019-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ib_umem_get() can only be called in a method callback, which always has a udata parameter. This allows ib_umem_get() to derive the ucontext pointer directly from the udata without requiring the drivers to find it in some way or another. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
| * | IB/{core,uverbs}: Move ib_umem_xxx functions from ib_core to ib_uverbsShamir Rabinovitch2019-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The next patch will add dependency from ib_umem_get in to ib_uverbs so move the required ib_umem_xxx functionality to it's correct module - ib_uverbs - and avoid circular dependecy from the form of ib_core -> ib_uverbs -> ib_core in depmod. Since this now requires all drivers to be build modular if uverbs is modular, hoist the test a couple drivers had into the main kconfig and apply it to all drivers uniformly. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* | | net: devlink: turn devlink into a built-inJakub Kicinski2019-02-26
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | Being able to build devlink as a module causes growing pains. First all drivers had to add a meta dependency to make sure they are not built in when devlink is built as a module. Now we are struggling to invoke ethtool compat code reliably. Make devlink code built-in, users can still not build it at all but the dynamically loadable module option is removed. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | IB/mlx4: Fix using wrong function to destroy sqp AHs under SRIOVJack Morgenstein2019-01-21
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit cited below replaced rdma_create_ah with mlx4_ib_create_slave_ah when creating AHs for the paravirtualized special QPs. However, this change also required replacing rdma_destroy_ah with mlx4_ib_destroy_ah in the affected flows. The commit missed 3 places where rdma_destroy_ah should have been replaced with mlx4_ib_destroy_ah. As a result, the pd usecount was decremented when the ah was destroyed -- although the usecount was NOT incremented when the ah was created. This caused the pd usecount to become negative, and resulted in the WARN_ON stack trace below when the mlx4_ib.ko module was unloaded: WARNING: CPU: 3 PID: 25303 at drivers/infiniband/core/verbs.c:329 ib_dealloc_pd+0x6d/0x80 [ib_core] Modules linked in: rdma_ucm rdma_cm iw_cm ib_cm ib_umad mlx4_ib(-) ib_uverbs ib_core mlx4_en mlx4_core nfsv3 nfs fscache configfs xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ipt_REJECT nf_reject_ipv4 tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bridge stp llc dm_mirror dm_region_hash dm_log dm_mod dax rndis_wlan rndis_host coretemp kvm_intel cdc_ether kvm usbnet iTCO_wdt iTCO_vendor_support cfg80211 irqbypass lpc_ich ipmi_si i2c_i801 mii pcspkr i2c_core mfd_core ipmi_devintf i7core_edac ipmi_msghandler ioatdma pcc_cpufreq dca acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables ext4 mbcache jbd2 sr_mod cdrom ata_generic pata_acpi mptsas scsi_transport_sas mptscsih crc32c_intel ata_piix bnx2 mptbase ipv6 crc_ccitt autofs4 [last unloaded: mlx4_core] CPU: 3 PID: 25303 Comm: modprobe Tainted: G W I 5.0.0-rc1-net-mlx4+ #1 Hardware name: IBM -[7148ZV6]-/Node 1, System Card, BIOS -[MLE170CUS-1.70]- 09/23/2011 RIP: 0010:ib_dealloc_pd+0x6d/0x80 [ib_core] Code: 00 00 85 c0 75 02 5b c3 80 3d aa 87 03 00 00 75 f5 48 c7 c7 88 d7 8f a0 31 c0 c6 05 98 87 03 00 01 e8 07 4c 79 e0 0f 0b 5b c3 <0f> 0b eb be 0f 0b eb ab 90 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 RSP: 0018:ffffc90005347e30 EFLAGS: 00010282 RAX: 00000000ffffffea RBX: ffff8888589e9540 RCX: 0000000000000006 RDX: 0000000000000006 RSI: ffff88885d57ad40 RDI: 0000000000000000 RBP: ffff88885b029c00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000004 R12: ffff8887f06c0000 R13: ffff8887f06c13e8 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fd6743c6740(0000) GS:ffff88887fcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000ed1038 CR3: 00000007e3156000 CR4: 00000000000006e0 Call Trace: mlx4_ib_close_sriov+0x125/0x180 [mlx4_ib] mlx4_ib_remove+0x57/0x1f0 [mlx4_ib] mlx4_remove_device+0x92/0xa0 [mlx4_core] mlx4_unregister_interface+0x39/0x90 [mlx4_core] mlx4_ib_cleanup+0xc/0xd7 [mlx4_ib] __x64_sys_delete_module+0x17d/0x290 ? trace_hardirqs_off_thunk+0x1a/0x1c ? do_syscall_64+0x12/0x180 do_syscall_64+0x4a/0x180 entry_SYSCALL_64_after_hwframe+0x49/0xbe Fixes: 5e62d5ff1b9a ("IB/mlx4: Create slave AH's directly") Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds2018-12-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull rdma updates from Jason Gunthorpe: "This has been a fairly typical cycle, with the usual sorts of driver updates. Several series continue to come through which improve and modernize various parts of the core code, and we finally are starting to get the uAPI command interface cleaned up. - Various driver fixes for bnxt_re, cxgb3/4, hfi1, hns, i40iw, mlx4, mlx5, qib, rxe, usnic - Rework the entire syscall flow for uverbs to be able to run over ioctl(). Finally getting past the historic bad choice to use write() for command execution - More functional coverage with the mlx5 'devx' user API - Start of the HFI1 series for 'TID RDMA' - SRQ support in the hns driver - Support for new IBTA defined 2x lane widths - A big series to consolidate all the driver function pointers into a big struct and have drivers provide a 'static const' version of the struct instead of open coding initialization - New 'advise_mr' uAPI to control device caching/loading of page tables - Support for inline data in SRPT - Modernize how umad uses the driver core and creates cdev's and sysfs files - First steps toward removing 'uobject' from the view of the drivers" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (193 commits) RDMA/srpt: Use kmem_cache_free() instead of kfree() RDMA/mlx5: Signedness bug in UVERBS_HANDLER() IB/uverbs: Signedness bug in UVERBS_HANDLER() IB/mlx5: Allocate the per-port Q counter shared when DEVX is supported IB/umad: Start using dev_groups of class IB/umad: Use class_groups and let core create class file IB/umad: Refactor code to use cdev_device_add() IB/umad: Avoid destroying device while it is accessed IB/umad: Simplify and avoid dynamic allocation of class IB/mlx5: Fix wrong error unwind IB/mlx4: Remove set but not used variable 'pd' RDMA/iwcm: Don't copy past the end of dev_name() string IB/mlx5: Fix long EEH recover time with NVMe offloads IB/mlx5: Simplify netdev unbinding IB/core: Move query port to ioctl RDMA/nldev: Expose port_cap_flags2 IB/core: uverbs copy to struct or zero helper IB/rxe: Reuse code which sets port state IB/rxe: Make counters thread safe IB/mlx5: Use the correct commands for UMEM and UCTX allocation ...
| * IB/mlx4: Remove set but not used variable 'pd'YueHaibing2018-12-20
| | | | | | | | | | | | | | | | | | | | | | | | Fixes gcc '-Wunused-but-set-variable' warning: drivers/infiniband/hw/mlx4/qp.c: In function '_mlx4_ib_destroy_qp': drivers/infiniband/hw/mlx4/qp.c:1612:22: warning: variable 'pd' set but not used [-Wunused-but-set-variable] Fixes: e00b64f7c54c ("RDMA: Cleanup undesired pd->uobject usage") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Mark if destroy address handle is in a sleepable contextGal Pressman2018-12-19
| | | | | | | | | | | | | | | | | | | | | | | | Introduce a 'flags' field to destroy address handle callback and add a flag that marks whether the callback is executed in an atomic context or not. This will allow drivers to wait for completion instead of polling for it when it is allowed. Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Mark if create address handle is in a sleepable contextGal Pressman2018-12-19
| | | | | | | | | | | | | | | | | | | | | | Introduce a 'flags' field to create address handle callback and add a flag that marks whether the callback is executed in an atomic context or not. This will allow drivers to wait for completion instead of polling for it when it is allowed. Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Cleanup undesired pd->uobject usageShamir Rabinovitch2018-12-18
| | | | | | | | | | | | | | | | | | | | | | | | Drivers should be using udata to determine if a method is invoked from user space or kernel space. A pd does not necessarily say a different objects is kernel or user. Transforming the tests to use udata eliminates a large number of uobject references from the drivers. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/mlx4: Utilize macro to calculate SQ spare sizeYuval Shaia2018-12-18
| | | | | | | | | | | | | | | | | | The macro MLX4_IB_SQ_HEADROOM calculates the spare room needed to be left. Use it instead of hard-coding the HW prefetch size. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA: Start use ib_device_opsKamal Heib2018-12-12
| | | | | | | | | | | | | | Make all the required change to start use the ib_device_ops structure. Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/mlx4: Initialize ib_device_ops structKamal Heib2018-12-11
| | | | | | | | | | | | | | | | Initialize ib_device_ops with the supported operations using ib_set_device_ops(). Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * IB/mlx4: Remove unneeded NULL checkYuval Shaia2018-12-11
| | | | | | | | | | | | | | | | | | NULL check for kfree is unnecessary, remove it. Fixes: b42dde478bca ("IB/mlx4: Rework special QP creation error path") Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * mlx4: Use snprintf instead of complicated strcpyQian Cai2018-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a compilation warning in sysfs.c drivers/infiniband/hw/mlx4/sysfs.c:360:2: warning: 'strncpy' output may be truncated copying 8 bytes from a string of length 31 [-Wstringop-truncation] By eliminating the temporary stack buffer. Signed-off-by: Qian Cai <cai@gmx.us> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * mlx4: trigger IB events needed by SMCUrsula Braun2018-11-22
| | | | | | | | | | | | | | | | | | | | | | The mlx4 driver does not trigger an IB_EVENT_PORT_ACTIVE when the RoCE network interface is activated. When SMC determines the RoCE device port to be used, it checks the port states. This patch triggers IB events for NETDEV_UP and NETDEV_DOWN. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* | {net, IB}/mlx4: Initialize CQ buffers in the driver when possibleDaniel Jurgens2018-11-22
|/ | | | | | | | | | | | | | | Perform CQ initialization in the driver when the capability is supported by the FW. When passing the CQ to HW indicate that the CQ buffer has been pre-initialized. Doing so decreases CQ creation time. Testing on P8 showed a single 2048 entry CQ creation time was reduced from ~395us to ~170us, which is 2.3x faster. Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* RDMA/drivers: Use core provided API for registering device attributesParav Pandit2018-10-17
| | | | | | | | | Use rdma_set_device_sysfs_group() to register device attributes and simplify the driver. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* IB/mlx4: Add port and TID to MAD debug printHåkon Bugge2018-10-16
| | | | | | | | Add said information and make the debug print format consistent. Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com> Acked-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/mlx4: Enable debug print of SMPsHåkon Bugge2018-10-16
| | | | | | | | | IB Subnet Management Packets (SMPs) were excluded from debug prints. Fixed by enabling print even on QP0 MADs. Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* IB/mlx4: Refer to the device kobject instead of ports_parentParav Pandit2018-10-16
| | | | | | | | | | | | | | | | | | iov sysfs tree is created under ib device at /sys/class/infiniband/mlx4_0/iov. And, ibdev->ports_parent->parent = &ibdev->dev. Therefore, refer to device's kobject directly instead of indirect access to it. Additionally, iov entries are created under device kobject and deleted before device is removed. There is no need to hold additional reference to device kobject in provider driver. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* Merge branch 'for-rc' into rdma.git for-nextJason Gunthorpe2018-10-16
|\ | | | | | | | | | | | | | | | | | | | | | | From git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git This is required to resolve dependencies of the next series of RDMA patches. The code motion conflicts in drivers/infiniband/core/cache.c were resolved. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * RDMA/mlx4: Ensure that maximal send/receive SGE less than supported by HWLeon Romanovsky2018-09-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In calculating the global maximum number of the Scatter/Gather elements supported, the following four maximum parameters must be taken into consideration: max_sg_rq, max_sg_sq, max_desc_sz_rq and max_desc_sz_sq. However instead of bringing this complexity to query_device, which still won't be sufficient anyway (the calculations are dependent on QP type), the safer approach will be to restore old code, which will give us 32 SGEs. Fixes: 33023fb85a42 ("IB/core: add max_send_sge and max_recv_sge attributes") Reported-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* | RDMA: Remove unused parameter from ib_modify_qp_is_ok()Kamal Heib2018-10-03
| | | | | | | | | | | | | | | | The ll parameter is not used in ib_modify_qp_is_ok(), so remove it. Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* | RDMA: Fully setup the device name in ib_register_deviceJason Gunthorpe2018-09-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current code has two copies of the device name, ibdev->dev and dev_name(&ibdev->dev), and they are setup at different times, which is very confusing. Set them both up at the same time and make dev_name() the lead name, which is the proper use of the driver core APIs. To make it very clear that the name is not valid until registration pass it in to the ib_register_device() call rather than messing with ibdev->name directly. Also the reorganization now checks that dev_name is unique even if it does not contain a %. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Acked-by: Adit Ranadive <aditr@vmware.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Acked-by: Devesh Sharma <devesh.sharma@broadcom.com> Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
* | RDMA: Fix dependencies for rdma_user_mmap_ioArnd Bergmann2018-09-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mlx4 driver produces a link error when it is configured as built-in while CONFIG_INFINIBAND_USER_ACCESS is set to =m: drivers/infiniband/hw/mlx4/main.o: In function `mlx4_ib_mmap': main.c:(.text+0x1af4): undefined reference to `rdma_user_mmap_io' The same function is called from mlx5, which already has a dependency to ensure we can call it, and from hns, which appears to suffer from the same problem. This adds the same dependency that mlx5 uses to the other two. Fixes: 6745d356ab39 ("RDMA/hns: Use rdma_user_mmap_io") Fixes: c282da4109e4 ("RDMA/mlx4: Use rdma_user_mmap_io") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
* | IB/mlx4: Remove unnecessary parenthesesNathan Chancellor2018-09-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clang warns when more than one set of parentheses are used in single conditional statements. drivers/infiniband/hw/mlx4/mcg.c:676:16: warning: equality comparison with extraneous parentheses [-Wparentheses-equality] if ((method == IB_MGMT_METHOD_GET_RESP)) { ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/infiniband/hw/mlx4/mcg.c:676:16: note: remove extraneous parentheses around the comparison to silence this warning if ((method == IB_MGMT_METHOD_GET_RESP)) { ~ ^ ~ drivers/infiniband/hw/mlx4/mcg.c:676:16: note: use '=' to turn this equality comparison into an assignment if ((method == IB_MGMT_METHOD_GET_RESP)) { ^~ = Remove the unnecessary parentheses to silence this warning. Reported-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* | RDMA/mlx4: Use rdma_user_mmap_ioJason Gunthorpe2018-09-20
|/ | | | | | | | Rely on the new core code helper to map BAR memory from the driver. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* Merge tag 'v4.18' into rdma.git for-nextJason Gunthorpe2018-08-16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | Resolve merge conflicts from the -rc cycle against the rdma.git tree: Conflicts: drivers/infiniband/core/uverbs_cmd.c - New ifs added to ib_uverbs_ex_create_flow in -rc and for-next - Merge removal of file->ucontext in for-next with new code in -rc drivers/infiniband/core/uverbs_main.c - for-next removed code from ib_uverbs_write() that was modified in for-rc Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| * Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds2018-06-20
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull rdma fixes from Jason Gunthorpe: "Here are eight fairly small fixes collected over the last two weeks. Regression and crashing bug fixes: - mlx4/5: Fixes for issues found from various checkers - A resource tracking and uverbs regression in the core code - qedr: NULL pointer regression found during testing - rxe: Various small bugs" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: IB/rxe: Fix missing completion for mem_reg work requests RDMA/core: Save kernel caller name when creating CQ using ib_create_cq() IB/uverbs: Fix ordering of ucontext check in ib_uverbs_write IB/mlx4: Fix an error handling path in 'mlx4_ib_rereg_user_mr()' RDMA/qedr: Fix NULL pointer dereference when running over iWARP without RDMA-CM IB/mlx5: Fix return value check in flow_counters_set_data() IB/mlx5: Fix memory leak in mlx5_ib_create_flow IB/rxe: avoid double kfree skb
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