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RDMA/core: Share driver structure size with core

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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>
This commit is contained in:
Leon Romanovsky 2019-02-03 14:55:50 +02:00 committed by Jason Gunthorpe
parent c66f67414c
commit 30471d4b20
2 changed files with 15 additions and 0 deletions
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2
drivers/infiniband/core/device.c
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@ -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);

13
include/rdma/ib_verbs.h
View File

@ -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