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2018-07-04RDMA/uverbs: Simplify UVERBS_ATTR family of macrosJason Gunthorpe1-98/+74
Instead of using a complex cascade of macros, just directly provide the initializer list each of the declarations is trying to create. Now that the macros are simplified this also reworks the uverbs_attr_spec to be friendly to older compilers by eliminating any unnamed structures/unions inside, and removing the duplication of some fields. The structure size remains at 16 bytes which was the original motivation for some of this oddness. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-07-04RDMA/uverbs: Split UVERBS_ATTR_FLOW_ACTION_ESP_HANDLEJason Gunthorpe1-1/+6
Two methods are sharing the same attribute constant, but the attribute definitions are not the same. This should not have been done, instead split them into two attributes with the same number. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-07-04RDMA/uverbs: Store the specs_root in the struct ib_uverbs_deviceJason Gunthorpe1-1/+1
The specs are required to operate the uverbs file, so they belong inside the ib_uverbs_device, not inside the ib_device. The spec passed in the ib_device is just a communication from the driver and should not be used during runtime. This also changes the lifetime of the spec memory to match the ib_uverbs_device, however at this time the spec_root can still contain driver pointers after disassociation, so it cannot be used if ib_dev is NULL. This is preparation for another series. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-07-04Merge branch 'mlx5-dump-fill-mkey' into rdma.git for-nextJason Gunthorpe3-4/+5
For dependencies, branch based on 'mellanox/mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git Pull Dump and fill MKEY from Leon Romanovsky: ==================== MLX5 IB HCA offers the memory key, dump_fill_mkey to increase performance, when used in a send or receive operations. It is used to force local HCA operations to skip the PCI bus access, while keeping track of the processed length in the ibv_sge handling. In this three patch series, we expose various bits in our HW spec file (mlx5_ifc.h), move unneeded for mlx5_core FW command and export such memory key to user space thought our mlx5-abi header file. ==================== Botched auto-merge in mlx5_ib_alloc_ucontext() resolved by hand. * branch 'mlx5-dump-fill-mkey': IB/mlx5: Expose dump and fill memory key net/mlx5: Add hardware definitions for dump_fill_mkey net/mlx5: Limit scope of dump_fill_mkey function net/mlx5: Rate limit errors in command interface Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-04IB/mlx5: Expose dump and fill memory keyYonatan Cohen1-1/+2
MLX5 IB HCA offers the memory key, dump_fill_mkey to boost performance, when used in a send or receive operations. It is used to force local HCA operations to skip the PCI bus access, while keeping track of the processed length in the ibv_sge handling. Meaning, instead of a PCI write access the HCA leaves the target memory untouched, and skips filling that packet section. Similar behavior is done upon send, the HCA skips data in memory relevant to this key and saves PCI bus access. This functionality saves PCI read/write operations. Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@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>
2018-07-04net/mlx5: Add hardware definitions for dump_fill_mkeyLeon Romanovsky1-1/+3
MLX5 IB HCA offers the memory key, dump_fill_mkey to boost performance by forcing local HCA operations to skip the PCI bus access, This patch adds needed hardware definitions. Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-07-04net/mlx5: Limit scope of dump_fill_mkey functionYonatan Cohen1-2/+0
mlx5_core_dump_fill_mkey() is going to be used in next patch in IB and doesn't need to be visible to whole mlx5_core. Move that command to mlx5_ib. Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-07-03include/rdma/opa_addr.h: Fix an endianness issueBart Van Assche1-1/+1
IB_MULTICAST_LID_BASE is defined as follows: #define IB_MULTICAST_LID_BASE cpu_to_be16(0xC000) Hence use be16_to_cpu() to convert it to CPU endianness. Compile-tested only. Fixes: af808ece5ce9 ("IB/SA: Check dlid before SA agent queries for ClassPortInfo") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com> Cc: Mike Marciniszyn <mike.marciniszyn@intel.com> Cc: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-29IB: Improve uverbs_cleanup_ucontext algorithmYishai Hadas2-8/+49
Improve uverbs_cleanup_ucontext algorithm to work properly when the topology graph of the objects cannot be determined at compile time. This is the case with objects created via the devx interface in mlx5. Typically uverbs objects must be created in a strict topologically sorted order, so that LIFO ordering will generally cause them to be freed properly. There are only a few cases (eg memory windows) where objects can point to things out of the strict LIFO order. Instead of using an explicit ordering scheme where the HW destroy is not allowed to fail, go over the list multiple times and allow the destroy function to fail. If progress halts then a final, desperate, cleanup is done before leaking the memory. This indicates a driver bug. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-25RDMA/verbs: Drop kernel variant of destroy_flowLeon Romanovsky1-2/+0
Following the removal of ib_create_flow(), adjust the code to get rid of ib_destroy_flow() too. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-25RDMA/verbs: Drop kernel variant of create_flowLeon Romanovsky1-2/+0
There are no kernel users of this interface so lets drop it. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-25RDMA/core: Remove unused ib cache functionsJason Gunthorpe1-39/+0
Now that all users have been converted to use the version of these APIs that returns a gid_attr pointer we can delete the old entry points. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-25IB/cm: Replace members of sa_path_rec with 'struct sgid_attr *'Parav Pandit1-46/+3
While processing a path record entry in CM messages the associated GID attribute is now also supplied. Currently for RoCE a netdevice's net namespace pointer and ifindex are stored in path record entry. Both of these fields of the netdev can change anytime while processing CM messages. Additionally storing net namespace without holding reference will lead to use-after-free crash. Therefore it is removed. Netdevice information for RoCE is instead provided via referenced gid attribute in ib_cm requests. Such a design leads to a situation where the kernel can crash when the net pointer becomes invalid. However today it is always initialized to init_net, which cannot become invalid. In order to support processing packets in any arbitrary namespace of the received packet, it is necessary to avoid such conditions. This patch removes the dependency on the net pointer and ifindex; instead it will rely on SGID attribute which contains a pointer to netdev. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-25IB/cm: Pass the sgid_attr through various eventsParav Pandit1-0/+3
Make the sgid_attr available along with path information to the event consumer, this allows the consumer to keep using the same GID table entry as the event is related to. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-25IB/cm: Keep track of the sgid_attr that created the cm idParav Pandit1-0/+2
Hold reference to the the sgid_attr which is used in a cm_id until the cm_id is destroyed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-25IB: Make ib_init_ah_attr_from_wc set sgid_attrParav Pandit1-0/+7
The work completion is inspected to determine what dgid table entry was used to receieve the packet, produces a sgid_attr that matches and sticks it in the ah_attr. All callers of this function are now required to release the ah_attr on success. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-22IB/uverbs: Delete type and id from uverbs_obj_attrJason Gunthorpe1-4/+0
In this context the uobject is not allowed to be NULL, so type is the same as uobject->type, and at least for IDR, id is the same as uobject->id. FD objects should never handle the FD number outside the uAPI boundary code. Suggested-by: Guy Levi <guyle@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-22Merge branch 'icrc-counter' into rdma.git for-nextJason Gunthorpe1-3/+8
For dependencies, branch based on 'mellanox/mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git Pull RoCE ICRC counters from Leon Romanovsky: ==================== This series exposes RoCE ICRC counter through existing RDMA hw_counters sysfs interface. The first patch has all HW definitions in mlx5_ifc.h file and second patch is the actual counter implementation. ==================== * branch 'icrc-counter': IB/mlx5: Support RoCE ICRC encapsulated error counter net/mlx5: Add RoCE RX ICRC encapsulated counter
2018-06-21net/mlx5: Add RoCE RX ICRC encapsulated counterTalat Batheesh1-3/+8
Add capability bit in PCAM register and RoCE ICRC error counter to PPCNT register. Signed-off-by: Talat Batheesh <talatb@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-19IB/rdmavt, IB/hfi1: Create device dependent s_flagsMike Marciniszyn1-13/+17
Move some s_flags defines out of rdmavt and into hfi1 because they are hfi1 specific and therefore should remain in the driver instead of bubbling up to rdmavt. Document device specific ranges in rdmavt and remap those in hfi1. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Add DEVX query EQN supportYishai Hadas1-0/+6
Return the matching device EQN for a given user vector number via the DEVX interface. Note: EQs are owned by the kernel and shared by all user processes. Basically, a user CQ can point to any EQ. The kernel doesn't enforce any such limitation today either. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Add DEVX support for memory registrationYishai Hadas2-0/+19
Add support to register a memory with the firmware via the DEVX interface. The driver translates a given user address to ib_umem then it will register the physical addresses with the firmware and get a unique id for this registration to be used for this virtual address. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Add support for DEVX query UARYishai Hadas1-0/+6
Return a device UAR index for a given user index via the DEVX interface. Security note: The hardware protection mechanism works like this: Each device object that is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in the device specification manual) upon its creation. Then upon doorbell, hardware fetches the object context for which the doorbell was rang, and validates that the UAR through which the DB was rang matches the UAR ID of the object. If no match the doorbell is silently ignored by the hardware. Of course, the user cannot ring a doorbell on a UAR that was not mapped to it. Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command mailboxes (except tagging them with UID), we expose to the user its UAR ID, so it can embed it in these objects in the expected specification format. So the only thing the user can do is hurt itself by creating a QP/SQ/CQ with a UAR ID other than his, and then in this case other users may ring a doorbell on its objects. The consequence of that will be that another user can schedule a QP/SQ of the buggy user for execution (just insert it to the hardware schedule queue or arm its CQ for event generation), no further harm is expected. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Add DEVX support for modify and query commandsYishai Hadas2-0/+17
Add support in DEVX for modify and query commands, the required lock is taken (i.e. READ/WRITE) by the KABI infrastructure accordingly. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Add obj create and destroy functionalityYishai Hadas1-0/+16
Add support to create and destroy firmware objects via the DEVX interface. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Add support for DEVX general commandYishai Hadas1-0/+13
Add support to run general firmware command via the DEVX interface. A command that works on some object (e.g. CQ, WQ, etc.) will be added in next patches while maintaining the required object lock. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/mlx5: Introduce DEVXYishai Hadas1-0/+3
Introduce DEVX to enable direct device commands in downstream patches from this series. In that mode of work the firmware manages the isolation between processes' resources and as such a DEVX user id is created and assigned to the given user context upon allocation request. A capability check is done to make sure that this feature is really supported by the firmware prior to creating the DEVX user id. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/core: Expose ib_ucontext from a given ib_uverbs_fileYishai Hadas1-0/+2
Drivers that use the IOCTL API may have the ib_uverbs_file and need a way to get the related ib_ucontext from it, this is enabled by this patch. Downstream patches from this series will use it. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/core: Introduce DECLARE_UVERBS_GLOBAL_METHODSYishai Hadas2-2/+4
Introduce a new macro to be used for global methods on a singleton object. This macros sets internally the type_attrs to be NULL as such an object can't be created. Downstream patches from this series will use this macro. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/uverbs: Add a macro to define a type with no kernel known sizeMatan Barak1-0/+2
Sometimes the uverbs uAPI doesn't really care about the structure it gets from user-space. All it wants to do is to allocate enough space and send it to the hardware/provider driver. Adding a UVERBS_ATTR_MIN_SIZE that could be used for this scenarios. We use USHRT_MAX as the kernel known size to bypass any zero validations. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19IB/uverbs: Add PTR_IN attributes that are allocated/copied automaticallyMatan Barak1-1/+35
Adding UVERBS_ATTR_SPEC_F_ALLOC_AND_COPY flag to PTR_IN attributes. By using this flag, the parse automatically allocates and copies the user-space data. This data is accessible by using uverbs_attr_get_len and uverbs_attr_get_alloced_ptr inline accessor functions from the handler. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-19Merge branch 'mellanox/mlx5-next' into RDMA for-nextJason Gunthorpe2-1/+69
From git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git * branch 'mellanox/mlx5-next': net/mlx5: Expose DEVX specification net/mlx5: Prevent warns in dmesg upon firmware commands
2018-06-19net/mlx5: Expose DEVX specificationYishai Hadas2-1/+69
This patch updates the mlx5_ifc structures and command interface to support DEVX. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18IB/core: add max_send_sge and max_recv_sge attributesSteve Wise1-1/+2
This patch replaces the ib_device_attr.max_sge with max_send_sge and max_recv_sge. It allows ulps to take advantage of devices that have very different send and recv sge depths. For example cxgb4 has a max_recv_sge of 4, yet a max_send_sge of 16. Splitting out these attributes allows much more efficient use of the SQ for cxgb4 with ulps that use the RDMA_RW API. Consider a large RDMA WRITE that has 16 scattergather entries. With max_sge of 4, the ulp would send 4 WRITE WRs, but with max_sge of 16, it can be done with 1 WRITE WR. Acked-by: Sagi Grimberg <sagi@grimberg.me> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Selvin Xavier <selvin.xavier@broadcom.com> Acked-by: Shiraz Saleem <shiraz.saleem@intel.com> Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18IDR: Expose the XArray lockwilly@infradead.org1-0/+11
Allow users of the IDR to use the XArray lock for their own synchronisation purposes. The IDR continues to rely on the caller to handle locking, but this lets the caller use the lock embedded in the IDR data structure instead of allocating their own lock. Signed-off-by: Matthew Wilcox <willy@infradead.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18RDMA: Hold the sgid_attr inside the struct ib_ah/qpJason Gunthorpe1-0/+4
If the AH has a GRH then hold a reference to the sgid_attr inside the common struct. If the QP is modified with an AV that includes a GRH then also hold a reference to the sgid_attr inside the common struct. This informs the cache that the sgid_index is in-use so long as the AH or QP using it exists. This also means that all drivers can access the sgid_attr directly from the ah_attr instead of querying the cache during their UD post-send paths. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18RDMA: Convert drivers to use sgid_attr instead of sgid_indexParav Pandit1-4/+4
The core code now ensures that all driver callbacks that receive an rdma_ah_attrs will have a sgid_attr's pointer if there is a GRH present. Drivers can use this pointer instead of calling a query function with sgid_index. This simplifies the drivers and also avoids races where a gid_index lookup may return different data if it is changed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18IB{cm, core}: Introduce and use ah_attr copy, move, replace APIsJason Gunthorpe1-0/+5
Introduce AH attribute copy, move and replace APIs to be used by core and provider drivers. In CM code flow when ah attribute might be re-initialized twice while processing incoming request, or initialized once while from path record while sending out CM requests. Therefore use rdma_move_ah_attr API to handle such scenarios instead of memcpy(). Provider drivers keeps a copy ah_attr during the lifetime of the ah. Therefore, use rdma_replace_ah_attr() which conditionally release reference to old ah_attr and holds reference to new attribute whose referrence is released when the AH is freed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18IB/core: Add a sgid_attr pointer to struct rdma_ah_attrJason Gunthorpe1-0/+7
The sgid_attr will ultimately replace the sgid_index in the ah_attr. This will allow for all layers to have a consistent view of what gid table entry was selected as processing runs through all stages of the stack. This commit introduces the pointer and ensures it is set before calling any driver callback that includes a struct ah_attr callback, allowing future patches to adjust both the drivers and the callers to use sgid_attr instead of sgid_index. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2018-06-18IB: Replace ib_query_gid/ib_get_cached_gid with rdma_query_gidParav Pandit1-4/+0
If the gid_attr argument is NULL then the functions behave identically to rdma_query_gid. ib_query_gid just calls ib_get_cached_gid, so everything can be consolidated to one function. Now that all callers either use rdma_query_gid() or ib_get_cached_gid(), ib_query_gid() API is removed. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18IB/core: Provide rdma_ versions of the gid cache APIJason Gunthorpe1-0/+17
These versions are functionally similar but all return gid_attrs and related information via reference instead of via copy. The old API is preserved, implemented as wrappers around the new, until all callers can be converted. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18IB/core: Introduce GID attribute get, put and hold APIsParav Pandit1-0/+4
This patch introduces three APIs, rdma_get_gid_attr(), rdma_put_gid_attr(), and rdma_hold_gid_attr() which expose the reference counting for GID table entries to the entire stack. The kref counting is based on the struct ib_gid_attr pointer Later patches will convert more cache query function to return struct ib_gid_attrs. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18RDMA: Use GID from the ib_gid_attr during the add_gid() callbackParav Pandit1-2/+1
Now that ib_gid_attr contains the GID, make use of that in the add_gid() callback functions for the provider drivers to simplify the add_gid() implementations. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-18IB/core: Introduce GID entry reference countsParav Pandit1-0/+1
In order to be able to expose pointers to the ib_gid_attrs in the GID table we need to make it so the value of the pointer cannot be changed. Thus each GID table entry gets a unique piece of kref'd memory that is written only during initialization and remains constant for its lifetime. This eventually will allow the struct ib_gid_attrs to be returned without copy from many of query the APIs, but it also provides a way to track when all users of a HW table index go away. For roce we no longer allow an in-use HW table index to be re-used for a new an different entry. When a GID table entry needs to be removed it is hidden from the find API, but remains as a valid HW index and all ib_gid_attr points remain valid. The HW index is not relased until all users put the kref. Later patches will broadly replace the use of the sgid_index integer with the kref'd structure. Ultimately this will prevent security problems where the OS changes the properties of a HW GID table entry while an active user object is still using the entry. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-17Merge tag 'for-linus-20180616' of git://git.kernel.dk/linux-blockLinus Torvalds2-4/+2
Pull block fixes from Jens Axboe: "A collection of fixes that should go into -rc1. This contains: - bsg_open vs bsg_unregister race fix (Anatoliy) - NVMe pull request from Christoph, with fixes for regressions in this window, FC connect/reconnect path code unification, and a trace point addition. - timeout fix (Christoph) - remove a few unused functions (Christoph) - blk-mq tag_set reinit fix (Roman)" * tag 'for-linus-20180616' of git://git.kernel.dk/linux-block: bsg: fix race of bsg_open and bsg_unregister block: remov blk_queue_invalidate_tags nvme-fabrics: fix and refine state checks in __nvmf_check_ready nvme-fabrics: handle the admin-only case properly in nvmf_check_ready nvme-fabrics: refactor queue ready check blk-mq: remove blk_mq_tagset_iter nvme: remove nvme_reinit_tagset nvme-fc: fix nulling of queue data on reconnect nvme-fc: remove reinit_request routine blk-mq: don't time out requests again that are in the timeout handler nvme-fc: change controllers first connect to use reconnect path nvme: don't rely on the changed namespace list log nvmet: free smart-log buffer after use nvme-rdma: fix error flow during mapping request data nvme: add bio remapping tracepoint nvme: fix NULL pointer dereference in nvme_init_subsystem blk-mq: reinit q->tag_set_list entry only after grace period
2018-06-17Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimentalLinus Torvalds11-11/+11
Pull documentation fixes from Mauro Carvalho Chehab: "This solves a series of broken links for files under Documentation, and improves a script meant to detect such broken links (see scripts/documentation-file-ref-check). The changes on this series are: - can.rst: fix a footnote reference; - crypto_engine.rst: Fix two parsing warnings; - Fix a lot of broken references to Documentation/*; - improve the scripts/documentation-file-ref-check script, in order to help detecting/fixing broken references, preventing false-positives. After this patch series, only 33 broken references to doc files are detected by scripts/documentation-file-ref-check" * tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits) fix a series of Documentation/ broken file name references Documentation: rstFlatTable.py: fix a broken reference ABI: sysfs-devices-system-cpu: remove a broken reference devicetree: fix a series of wrong file references devicetree: fix name of pinctrl-bindings.txt devicetree: fix some bindings file names MAINTAINERS: fix location of DT npcm files MAINTAINERS: fix location of some display DT bindings kernel-parameters.txt: fix pointers to sound parameters bindings: nvmem/zii: Fix location of nvmem.txt docs: Fix more broken references scripts/documentation-file-ref-check: check tools/*/Documentation scripts/documentation-file-ref-check: get rid of false-positives scripts/documentation-file-ref-check: hint: dash or underline scripts/documentation-file-ref-check: add a fix logic for DT scripts/documentation-file-ref-check: accept more wildcards at filenames scripts/documentation-file-ref-check: fix help message media: max2175: fix location of driver's companion documentation media: v4l: fix broken video4linux docs locations media: dvb: point to the location of the old README.dvb-usb file ...
2018-06-17Merge tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fsLinus Torvalds1-10/+69
Pull fsnotify updates from Jan Kara: "fsnotify cleanups unifying handling of different watch types. This is the shortened fsnotify series from Amir with the last five patches pulled out. Amir has modified those patches to not change struct inode but obviously it's too late for those to go into this merge window" * tag 'fsnotify_for_v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fsnotify: add fsnotify_add_inode_mark() wrappers fanotify: generalize fanotify_should_send_event() fsnotify: generalize send_to_group() fsnotify: generalize iteration of marks by object type fsnotify: introduce marks iteration helpers fsnotify: remove redundant arguments to handle_event() fsnotify: use type id to identify connector object type
2018-06-17Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linuxLinus Torvalds4-209/+0
Pull fbdev updates from Bartlomiej Zolnierkiewicz: "There is nothing really major here, few small fixes, some cleanups and dead drivers removal: - mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen) - add missing module license tags to omap/omapfb driver (Arnd Bergmann) - add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd Bergmann) - convert savagefb, aty128fb & radeonfb drivers to use msleep & co. (Jia-Ju Bai) - allow COMPILE_TEST build for viafb driver (media part was reviewed by media subsystem Maintainer) - remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm drivers (drm parts were acked by shmob-drm driver Maintainer) - remove unused auo_k190xfb drivers - misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy Shevchenko, Colin Ian King)" * tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits) fb_omap2: add gpiolib dependency video/omap: add module license tags MAINTAINERS: make omapfb orphan video: fbdev: pxafb: match_string() conversion fixup video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling" video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer" video: fbdev: pxafb: Convert to use match_string() helper video: fbdev: via: allow COMPILE_TEST build video: fbdev: remove unused sh_mobile_meram driver drm: shmobile: remove unused MERAM support video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support video: fbdev: remove unused auo_k190xfb drivers video: omap: Improve a size determination in omapfb_do_probe() video: sm501fb: Improve a size determination in sm501fb_probe() video: fbdev-MMP: Improve a size determination in path_init() video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe() video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe() video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency ...
2018-06-16Merge branch 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds2-0/+13
Pull AFS updates from Al Viro: "Assorted AFS stuff - ended up in vfs.git since most of that consists of David's AFS-related followups to Christoph's procfs series" * 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: afs: Optimise callback breaking by not repeating volume lookup afs: Display manually added cells in dynamic root mount afs: Enable IPv6 DNS lookups afs: Show all of a server's addresses in /proc/fs/afs/servers afs: Handle CONFIG_PROC_FS=n proc: Make inline name size calculation automatic afs: Implement network namespacing afs: Mark afs_net::ws_cell as __rcu and set using rcu functions afs: Fix a Sparse warning in xdr_decode_AFSFetchStatus() proc: Add a way to make network proc files writable afs: Rearrange fs/afs/proc.c to remove remaining predeclarations. afs: Rearrange fs/afs/proc.c to move the show routines up afs: Rearrange fs/afs/proc.c by moving fops and open functions down afs: Move /proc management functions to the end of the file
2018-06-16Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds1-1/+1
Pull aio fixes from Al Viro: "Assorted AIO followups and fixes" * 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: eventpoll: switch to ->poll_mask aio: only return events requested in poll_mask() for IOCB_CMD_POLL eventfd: only return events requested in poll_mask() aio: mark __aio_sigset::sigmask const
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