- 19 Jun, 2018 11 commits
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Yishai Hadas authored
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>
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Yishai Hadas authored
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:
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Yishai Hadas authored
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:
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Matan Barak authored
The ioctl parser framework wrongly assumed that each namespace is populated. This could lead to NULL dereferences. Fix the parser to always check that a given namespace indeed exists. Fixes: fac9658c ("IB/core: Add new ioctl interface") Signed-off-by:
Matan Barak <matanb@mellanox.com> Signed-off-by:
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Matan Barak authored
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:
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Matan Barak authored
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:
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Matan Barak authored
uverbs_finalize_objects is currently used only to commit or abort objects. Since we want to add automatic allocation/free of PTR_IN attributes, moving it to uverbs_ioctl.c and renamit it to uverbs_finalize_attrs. Signed-off-by:
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Matan Barak authored
As provider drivers could use UVERBS_ATTR_FD and UVERBS_ATTR_IDR macros need to export them. Signed-off-by:
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Jason Gunthorpe authored
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
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Yishai Hadas authored
This patch updates the mlx5_ifc structures and command interface to support DEVX. Signed-off-by:
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Yishai Hadas authored
When DEVX is used application builds by itself the command mail box, this patch prevents warns upon firmware commands as of invalid user space usage. In addition, A failure in destroy_mkey command was changed to be printed only under debug mode. This prevents a redundant warn when a memory window was used with rereg_mr and finally was some kernel cleanup as of reset flow/process termination. In that case this command might temporarily fails as part of the cleanup but finally it expects to succeed. Signed-off-by:
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- 18 Jun, 2018 29 commits
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Bharat Potnuri authored
memcpy() of mapped addresses is done twice in c4iw_create_listen(), removing the duplicate memcpy(). Fixes: 170003c8 ("iw_cxgb4: remove port mapper related code") Reviewed-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
Potnuri Bharat Teja <bharat@chelsio.com> Signed-off-by:
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Steve Wise authored
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:
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Zhu Yanjun authored
Before goto err2, the variable qp is checked. So it is not necessary to check qp in label err2. Signed-off-by:
Zhu Yanjun <yanjun.zhu@oracle.com> Reviewed-by:
Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by:
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Vijay Immanuel authored
Set the vlan flag and vlan_id field in the wc for rdma_listen() to work over VLAN. This is required by ib_init_ah_attr_from_wc() which is called by the CM REQ handler. Signed-off-by:
Vijay Immanuel <vijayi@attalasystems.com> Reviewed-by:
Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by:
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Vijay Immanuel authored
Increase the max MR limit to support more I/O queues for NVMe over Fabrics hosts. Signed-off-by:
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willy@infradead.org authored
Allocate agent IDs from a global IDR instead of an atomic variable. This eliminates the possibility of reusing an ID which is already in use after 4 billion registrations. We limit the assigned ID to be less than 2^24 as the mlx4 driver uses the most significant byte of the agent ID to store the slave number. Users unlucky enough to see a collision between agent numbers and slave numbers see messages like: mlx4_ib: egress mad has non-null tid msb:1 class:4 slave:0 and the MAD layer stops working. We look up the agent under protection of the RCU lock, which means we have to free the agent using kfree_rcu, and only increment the reference counter if it is not 0. Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com> Reported-by:
Hans Westgaard Ry <hans.westgaard.ry@oracle.com> Acked-by:
Jack Morgenstein <jackm@dev.mellanox.co.il> Tested-by:
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willy@infradead.org authored
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:
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Parav Pandit authored
For UD the drivers were doing a sgid_index lookup into the cache to get the attrs, however we can now directly access the same attrs stores in the ib_ah instead and remove the lookup. Signed-off-by:
Parav Pandit <parav@mellanox.com> Signed-off-by:
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Jason Gunthorpe authored
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:
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Parav Pandit authored
While converting GID index from attribute to that of the HCA, GID attribute is available from the ah_attr. Make use of GID attribute to simplify the code and also avoid avoid GID query. Signed-off-by:
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Parav Pandit authored
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:
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Jason Gunthorpe authored
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:
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Parav Pandit authored
No reason to call rdma_ah_retrieve_grh, tidy whitespace, and add a function comment block. Signed-off-by:
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Jason Gunthorpe authored
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:
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Parav Pandit authored
Since we are adding some new fields to this structure it is safest if all users reliably initialize the struct to zero. Signed-off-by:
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Matthew Wilcox authored
Document this (it's implicitly true due to sleeping operations already in use in both registration and deregistration). Use this fact to use spin_lock_irq instead of spin_lock_irqsave. This improves performance slightly. Signed-off-by:
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Jason Gunthorpe authored
struct rxe_global_route and struct ib_global_route are not the same thing and should not be memcpy'd over each other, do a member by member copy instead. This allows the layout of the in-kernel struct ib_global_route to be changed without breaking rxe. Reviewed-by:
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Shiraz Saleem authored
Commit f43c00c0 ("i40iw: Extend port reuse support for listeners") introduces a sparse warning: include/linux/spinlock.h:365:9: sparse: context imbalance in 'i40iw_manage_apbvt' - unexpected unlock Fix this by reorganizing the acquire/release of locks in i40iw_manage_apbvt and add a new function i40iw_cqp_manage_abvpt_cmd to perform the CQP command. Also, use __clear_bit and __test_and_set_bit as we do not need atomic versions. Fixes: f43c00c0 ("i40iw: Extend port reuse support for listeners") Suggested-by:
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Leon Romanovsky authored
Simplify the flow_resources_alloc() function call by reducing number of goto statements. Reviewed-by:
Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by:
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Leon Romanovsky authored
Port capability flag represents IBTA PortInfo:CapabilityMask, but was mistakenly mixed with non-relevant fields. Return that information for IB only. Link: https://patchwork.kernel.org/patch/10386245/Signed-off-by:
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Parav Pandit authored
rxe_netdev_from_av can now be done by the core code directly from the gid_attrs, no need for a helper in the driver. ib_find_cached_gid_by_port can be switched to use the rdma version here as well. Signed-off-by:
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Parav Pandit authored
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:
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Jason Gunthorpe authored
There is no reason to restrict this function to roce only these days, allow the filter function to be called on any protocol. Signed-off-by:
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Jason Gunthorpe authored
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:
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Parav Pandit authored
Push the copy of the gid_attr into the SMC code. This probably doesn't push it far enough, as it looks like the conn->lgr should potentially hold the reference for its lifetime. Signed-off-by:
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Parav Pandit authored
These call sites have a use of ib_query_gid with a simple lifetime for the struct gid_attr pointer, with an easy conversion. Signed-off-by:
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Parav Pandit authored
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:
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Parav Pandit authored
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:
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Parav Pandit authored
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:
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