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Commit 30471d4b authored by Leon Romanovsky's avatar Leon Romanovsky Committed by Jason Gunthorpe
Browse files

RDMA/core: Share driver structure size with core 



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: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent c66f6741

drivers/infiniband/core/device.c

+2 −0
Original line number Diff line number Diff line
@@ -1228,6 +1228,8 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops) 
				(ptr)->name = ops->name;                       \

	} while (0)



#define SET_OBJ_SIZE(ptr, name) SET_DEVICE_OP(ptr, size_##name)



	SET_DEVICE_OP(dev_ops, add_gid);

	SET_DEVICE_OP(dev_ops, advise_mr);

	SET_DEVICE_OP(dev_ops, alloc_dm);

include/rdma/ib_verbs.h

+13 −0
Original line number Diff line number Diff line
@@ -2264,6 +2264,19 @@ struct ib_counters_read_attr { 


struct uverbs_attr_bundle;



#define INIT_RDMA_OBJ_SIZE(ib_struct, drv_struct, member)                      \

	.size_##ib_struct =                                                    \

		(sizeof(struct drv_struct) +                                   \

		 BUILD_BUG_ON_ZERO(offsetof(struct drv_struct, member)) +      \

		 BUILD_BUG_ON_ZERO(                                            \

			 !__same_type(((struct drv_struct *)NULL)->member,     \

				      struct ib_struct)))



#define rdma_zalloc_drv_obj(ib_dev, ib_type)                                   \

	((struct ib_type *)kzalloc(ib_dev->ops.size_##ib_type, GFP_KERNEL))



#define DECLARE_RDMA_OBJ_SIZE(ib_struct) size_t size_##ib_struct



/**

 * struct ib_device_ops - InfiniBand device operations

 * This structure defines all the InfiniBand device operations, providers will