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2019-05-06RDMA: Add EFA related definitionsGal Pressman1-1/+3
Add EFA driver ID to the IOCTL interface uapi. This patch also adds unspecified node/transport type that will be used by EFA (usnic is left unchanged as it's already part of our ABI). Signed-off-by: Gal Pressman <galpress@amazon.com> Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-06RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocksShiraz Saleem1-0/+47
This helper iterates over a DMA-mapped SGL and returns contiguous memory blocks aligned to a HW supported page size. Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-06RDMA/umem: Add API to find best driver supported page size in an MRShiraz Saleem1-0/+24
This helper iterates through the SG list to find the best page size to use from a bitmap of HW supported page sizes. Drivers that support multiple page sizes, but not mixed sizes in an MR can use this API. Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-03RDMA/core: Allow detaching gid attribute netdevice for RoCEParav Pandit1-1/+1
When there is active traffic through a GID, a QP/AH holds reference to this GID entry. RoCE GID entry holds reference to its attached netdevice. Due to this when netdevice is deleted by admin user, its refcount is not dropped. Therefore, while deleting RoCE GID, wait for all GID attribute's netdev users to finish accessing netdev in rcu context. Once all users done accessing it, release the netdev refcount. Signed-off-by: Huy Nguyen <huyn@mellanox.com> Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-03RDMA: Get rid of iw_cm_verbsKamal Heib1-4/+19
Integrate iw_cm_verbs data members into ib_device_ops and ib_device structs, this is done to achieve the following: 1) Avoid memory related bugs durring error unwind 2) Make the code more cleaner 3) Reduce code duplication Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-05-01RDMA/core: Introduce RDMA subsystem ibdev_* print functionsGal Pressman1-0/+30
Similarly to dev/netdev/etc printk helpers, add standard printk helpers for the RDMA subsystem. Example output: efa 0000:00:06.0 efa_0: Hello World! efa_0: Hello World! (no parent device set) (NULL ib_device): Hello World! (ibdev is NULL) Cc: Jason Baron <jbaron@akamai.com> Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Suggested-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Gal Pressman <galpress@amazon.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-04-24Merge branch 'rdma_mmap' into rdma.git for-nextJason Gunthorpe1-9/+0
Jason Gunthorpe says: ==================== Upon review it turns out there are some long standing problems in BAR mapping area: * BAR pages intended for read-only can be switched to writable via mprotect. * Missing use of rdma_user_mmap_io for the mlx5 clock BAR page. * Disassociate causes SIGBUS when touching the pages. * CPU pages are being mapped through to the process via remap_pfn_range instead of the more appropriate vm_insert_page, causing weird behaviors during disassociation. This series adds the missing VM_* flag manipulation, adds faulting a zero page for disassociation and revises the CPU page mappings to use vm_insert_page. ==================== For dependencies this branch is based on for-rc from git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git * branch 'rdma_mmap': RDMA: Remove rdma_user_mmap_page RDMA/mlx5: Use get_zeroed_page() for clock_info RDMA/ucontext: Fix regression with disassociate RDMA/mlx5: Use rdma_user_map_io for mapping BAR pages RDMA/mlx5: Do not allow the user to write to the clock page Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-24RDMA: Remove rdma_user_mmap_pageJason Gunthorpe1-9/+0
Upon further research drivers that want this should simply call the core function vm_insert_page(). The VMA holds a reference on the page and it will be automatically freed when the last reference drops. No need for disassociate to sequence the cleanup. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-08RDMA: Handle SRQ allocations by IB/coreLeon Romanovsky1-4/+5
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>
2019-04-08RDMA: Handle AH allocations by IB/coreLeon Romanovsky1-4/+4
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>
2019-04-08RDMA/core: Support object allocation in atomic contextLeon Romanovsky1-1/+6
AH objects are allocated in atomic context and those allocations should be done with GFP_ATOMIC. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-04-01IB: Pass only ib_udata in function prototypesShamir Rabinovitch1-4/+1
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>
2019-04-01IB: Pass uverbs_attr_bundle down ib_x destroy pathShamir Rabinovitch1-34/+194
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>
2019-03-29RDMA/core: Don't compare specific bit after boolean ANDLeon Romanovsky1-2/+2
There is no need to perform extra comparison after boolean AND. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28RDMA: Check net namespace access for uverbs, umad, cma and nldevParav Pandit1-0/+3
Introduce an API rdma_dev_access_netns() to check whether a rdma device can be accessed from the specified net namespace or not. Use rdma_dev_access_netns() while opening character uverbs, umad network device and also check while rdma cm_id binds to rdma device. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28RDMA/core: Implement compat device/sysfs tree in net namespaceParav Pandit1-0/+6
Implement compatibility layer sysfs entries of ib_core so that non init_net net namespaces can also discover rdma devices. Each non init_net net namespace has ib_core_device created in it. Such ib_core_device sysfs tree resembles rdma devices found in init_net namespace. This allows discovering rdma devices in multiple non init_net net namespaces via sysfs entries and helpful to rdma-core userspace. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-03-28RDMA/core: Introduce ib_core_device to hold deviceParav Pandit1-6/+19
In order to support sysfs entries in multiple net namespaces for a rdma device, introduce a ib_core_device whose scope is limited to hold core device and per port sysfs related entries. This is preparation patch so that multiple ib_core_devices in each net namespace can be created in subsequent patch who all can share ib_device. (a) Move sysfs specific fields to ib_core_device. (b) Make sysfs and device life cycle related routines to work on ib_core_device. (c) Introduce and use rdma_init_coredev() helper to initialize coredev fields. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-22RDMA: Handle ucontext allocations by IB/coreLeon Romanovsky1-3/+4
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>
2019-02-19RDMA/core: Add RDMA_NLDEV_CMD_NEWLINK/DELLINK supportSteve Wise1-0/+3
Add support for new LINK messages to allow adding and deleting rdma interfaces. This will be used initially for soft rdma drivers which instantiate device instances dynamically by the admin specifying a netdev device to use. The rdma_rxe module will be the first user of these messages. The design is modeled after RTNL_NEWLINK/DELLINK: rdma drivers register with the rdma core if they provide link add/delete functions. Each driver registers with a unique "type" string, that is used to dispatch messages coming from user space. A new RDMA_NLDEV_ATTR is defined for the "type" string. User mode will pass 3 attributes in a NEWLINK message: RDMA_NLDEV_ATTR_DEV_NAME for the desired rdma device name to be created, RDMA_NLDEV_ATTR_LINK_TYPE for the "type" of link being added, and RDMA_NLDEV_ATTR_NDEV_NAME for the net_device interface to use for this link. The DELLINK message will contain the RDMA_NLDEV_ATTR_DEV_INDEX of the device to delete. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/rxe: Close a race after ib_register_deviceJason Gunthorpe1-0/+5
Since rxe allows unregistration from other threads the rxe pointer can become invalid any moment after ib_register_driver returns. This could cause a user triggered use after free. Add another driver callback to be called right after the device becomes registered to complete any device setup required post-registration. This callback has enough core locking to prevent the device from becoming unregistered. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/device: Provide APIs from the core code to help unregistrationJason Gunthorpe1-0/+11
These APIs are intended to support drivers that exist outside the usual driver core probe()/remove() callbacks. Normally the driver core will prevent remove() from running concurrently with probe(), once this safety is lost drivers need more support to get the locking and lifetimes right. ib_unregister_driver() is intended to be used during module_exit of a driver using these APIs. It unregisters all the associated ib_devices. ib_unregister_device_and_put() is to be used by a driver-specific removal function (ie removal by name, removal from a netdev notifier, removal from netlink) ib_unregister_queued() is to be used from netdev notifier chains where RTNL is held. The locking is tricky here since once things become async it is possible to race unregister with registration. This is largely solved by relying on the registration refcount, unregistration will only ever work on something that has a positive registration refcount - and then an unregistration mutex serializes all competing unregistrations of the same device. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/device: Add ib_device_get_by_netdev()Jason Gunthorpe1-1/+9
Several drivers need to find the ib_device from a given netdev. rxe needs this at speed in an unsleepable context, so choose to implement the translation using a RCU safe hash table. The hash table can have a many to one mapping. This is intended to support some future case where multiple IB drivers (ie iWarp and RoCE) connect to the same netdevs. driver_ids will need to be different to support this. In the process this makes the struct ib_device and ib_port_data RCU safe by deferring their kfrees. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/device: Add ib_device_set_netdev() as an alternative to get_netdevJason Gunthorpe1-0/+7
The associated netdev should not actually be very dynamic, so for most drivers there is no reason for a callback like this. Provide an API to inform the core code about the net dev affiliation and use a core maintained data structure instead. This allows the core code to be more aware of the ndev relationship which will allow some new APIs based around this. This also uses locking that makes some kind of sense, many drivers had a confusing RCU lock, or missing locking which isn't right. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/cache: Move the cache per-port data into the main ib_port_dataJason Gunthorpe1-1/+2
Like the other cases there no real reason to have another array just for the cache. This larger conversion gets its own patch. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA/device: Consolidate ib_device per_port data into one placeJason Gunthorpe1-31/+43
There is no reason to have three allocations of per-port data. Combine them together and make the lifetime for all the per-port data match the struct ib_device. Following patches will require more port-specific data, now there is a good place to put it. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-19RDMA: Add and use rdma_for_each_portJason Gunthorpe1-0/+10
We have many loops iterating over all of the end port numbers on a struct ib_device, simplify them with a for_each helper. Reviewed-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18RDMA/restrack: Hide restrack DB from IB/coreLeon Romanovsky1-4/+3
There is no need to expose internals of restrack DB to IB/core. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-15IB/uverbs: Add ib_ucontext to uverbs_attr_bundle sent from ioctl and cmd flowsShamir Rabinovitch1-2/+0
Add ib_ucontext to the uverbs_attr_bundle sent down the iocl and cmd flows as soon as the flow has ib_uobject. In addition, remove rdma_get_ucontext helper function that is only used by ib_umem_get. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08RDMA/devices: Re-organize device.c lockingJason Gunthorpe1-0/+1
The locking here started out with a single lock that covered everything and then has lately veered into crazy town. The fundamental problem is that several places need to iterate over a linked list, but also need to drop their locks to avoid deadlock during client callbacks. xarray's restartable iteration offers a simple solution to the problem. Once all the lists are xarrays we can drop locks in the places that need that and rely on xarray to provide consistency and locking for the data structure. The resulting simplification is that each of the three lists has a dedicated rwsem that must be held when working with the list it covers. One data structure is no longer covered by multiple locks. The sleeping semaphore is selected because the read side generally needs to be held over something sleeping, and using RCU reader locking in those cases is overkill. In the process this simplifies the entire registration/unregistration flow to be the expected list of setups and the reversed list of matching teardowns, and the registration lock 'refcount' can now be revised to be released after the ULPs are removed, providing a very sane semantic for this feature. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08RDMA/devices: Use xarray to store the client_dataJason Gunthorpe1-7/+16
Now that we have a small ID for each client we can use xarray instead of linearly searching linked lists for client data. This will give much faster and scalable client data lookup, and will lets us revise the locking scheme. Since xarray can store 'going_down' using a mark just entirely eliminate the struct ib_client_data and directly store the client_data value in the xarray. However this does require a special iterator as we must still iterate over any NULL client_data values. Also eliminate the client_data_lock in favour of internal xarray locking. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-08RDMA/devices: Use xarray to store the clientsJason Gunthorpe1-1/+2
This gives each client a unique ID and will let us move client_data to use xarray, and revise the locking scheme. clients have to be add/removed in strict FIFO/LIFO order as they interdepend. To support this the client_ids are assigned to increase in FIFO order. The existing linked list is kept to support reverse iteration until xarray can get a reverse iteration API. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com>
2019-02-08RDMA/device: Get rid of reg_stateJason Gunthorpe1-6/+0
This really has no purpose anymore, refcount can be used to tell if the device is still registered. Keeping it around just invites mis-use. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com>
2019-02-08RDMA: Handle PD allocations by IB/coreLeon Romanovsky1-4/+5
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>
2019-02-08RDMA/core: Share driver structure size with coreLeon Romanovsky1-0/+13
Add new macros to be used in drivers while registering ops structure and IB/core while calling allocation routines, so drivers won't need to perform kzalloc/kfree in their paths. The change in allocation stage allows us to initialize common fields prior to calling to drivers (e.g. restrack). Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04Merge tag 'v5.0-rc5' into rdma.git for-nextJason Gunthorpe1-2/+22
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.
2019-02-04IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()Bart Van Assche1-27/+0
Keeping single line wrapper functions is not useful. Hence remove the ib_sg_dma_address() and ib_sg_dma_len() functions. This patch does not change any functionality. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/uverbs: Expose XRC ODP device capabilitiesMoni Shoua1-0/+1
Expose XRC ODP capabilities as part of the extended device capabilities. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-04IB/core: Allocate a bit for SRQ ODP supportMoni Shoua1-0/+1
The ODP support matrix is per operation and per transport. The support for each transport (RC, UD, etc.) is described with a bit field. ODP for SRQ WQEs is considered a different kind of support from ODP for RQ WQs and therefore needs a different capability bit. Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA/core: Use the ops infrastructure to keep all callbacks in one placeLeon Romanovsky1-0/+5
As preparation to hide rdma_restrack_root, refactor the code to use the ops structure instead of a special callback which is hidden in rdma_restrack_root. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA: Add indication for in kernel API support to IB deviceGal Pressman1-0/+5
Drivers that do not provide kernel verbs support should not be used by ib kernel clients at all. In case a device does not implement all mandatory verbs for kverbs usage mark it as a non kverbs provider and prevent its usage for all clients except for uverbs. The device is marked as a non kverbs provider using the 'kverbs_provider' flag which should only be set by the core code. The clients can choose whether kverbs are requested for its usage using the 'no_kverbs_req' flag which is currently set for uverbs only. This patch allows drivers to remove mandatory verbs stubs and simply set the callbacks to NULL. The IB device will be registered as a non-kverbs provider. Note that verbs that are required for the device registration process must be implemented. Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-30RDMA: Provide safe ib_alloc_device() functionLeon Romanovsky1-1/+7
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>
2019-01-30RDMA/srp: Increase max_segment_sizeBart Van Assche1-0/+13
The default behavior of the SCSI core is to set the block layer request queue parameter max_segment_size to 64 KB. That means that elements of scatterlists are limited to 64 KB. Since RDMA adapters support larger sizes, increase max_segment_size for the SRP initiator. Notes: - The SCSI max_segment_size parameter was introduced in kernel v5.0. See also commit 50c2e9107f17 ("scsi: introduce a max_segment_size host_template parameters"). - Some other block drivers already set max_segment_size to UINT_MAX, e.g. nbd and rbd. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-21RDMA/device: Expose ib_device_try_get(()Jason Gunthorpe1-2/+22
It turns out future patches need this capability quite widely now, not just for netlink, so provide two global functions to manage the registration lock refcount. This also moves the point the lock becomes 1 to within ib_register_device() so that the semantics of the public API are very sane and clear. Calling ib_device_try_get() will fail on devices that are only allocated but not yet registered. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Parav Pandit <parav@mellanox.com>
2019-01-14RDMA: Introduce and use rdma_device_to_ibdev()Parav Pandit1-0/+23
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>
2019-01-14RDMA: Rename port_callback to init_portParav Pandit1-3/+7
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>
2019-01-10IB/{core,hw}: Have ib_umem_get extract the ib_ucontext from ib_udataJason Gunthorpe1-0/+1
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>
2019-01-08RDMA: Clean structures from CONFIG_INFINIBAND_ON_DEMAND_PAGINGLeon Romanovsky1-2/+0
CONFIG_INFINIBAND_ON_DEMAND_PAGING is used in general structures to micro-optimize the memory footprint. Remove it, so it will allow us to simplify various ODP device flows. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-12-19RDMA: Mark if destroy address handle is in a sleepable contextGal Pressman1-2/+8
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>
2018-12-19RDMA: Mark if create address handle is in a sleepable contextGal Pressman1-2/+9
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>
2018-12-18IB/uverbs: Add support to advise_mrMoni Shoua1-0/+4
Add new ioctl method for the MR object - ADVISE_MR. This command can be used by users to give an advice or directions to the kernel about an address range that belongs to memory regions. A new ib_device callback, advise_mr(), is introduced here to suupport the new command. This command takes the following arguments: - pd: The protection domain to which all memory regions belong - advice: The type of the advice * IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH - Pre-fetch a range of an on-demand paging MR * IB_UVERBS_ADVISE_MR_ADVICE_PREFETCH_WRITE - Pre-fetch a range of an on-demand paging MR with write intention - flags: The properties of the advice * IB_UVERBS_ADVISE_MR_FLAG_FLUSH - Operation must end before return to the caller - sg_list: The list of memory ranges - num_sge: The number of memory ranges in the list - attrs: More attributes to be parsed by the provider Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Guy Levi <guyle@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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