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IB/core: Change completion channel to use the reworked objects schema

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This patch adds the standard fd based type - completion_channel.
The completion_channel is now prefixed with ib_uobject, similarly
to the rest of the uobjects.
This requires a few changes:
(1) We define a new completion channel fd based object type.
(2) completion_event and async_event are now two different types.
    This means they use different fops.
(3) We release the completion_channel exactly as we release other
    idr based objects.
(4) Since ib_uobjects are already kref-ed, we only add the kref to the
    async event.

A fd object requires filling out several parameters. Its op pointer
should point to uverbs_fd_ops and its size should be at least the
size if ib_uobject. We use a macro to make the type declaration
easier.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Matan Barak
2017-04-04 13:31:47 +03:00
committed by Doug Ledford
parent cf8966b347
commit 1e7710f3f6
6 changed files with 256 additions and 147 deletions
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1
include/rdma/uverbs_std_types.h
View File

@@ -35,6 +35,7 @@
#include <rdma/uverbs_types.h>
extern const struct uverbs_obj_fd_type uverbs_type_attrs_comp_channel;
extern const struct uverbs_obj_idr_type uverbs_type_attrs_cq;
extern const struct uverbs_obj_idr_type uverbs_type_attrs_qp;
extern const struct uverbs_obj_idr_type uverbs_type_attrs_rwq_ind_table;

9
include/rdma/uverbs_types.h
View File

@@ -146,9 +146,18 @@ struct uverbs_obj_fd_type {
};
extern const struct uverbs_obj_type_class uverbs_idr_class;
extern const struct uverbs_obj_type_class uverbs_fd_class;
#define UVERBS_BUILD_BUG_ON(cond) (sizeof(char[1 - 2 * !!(cond)]) - \
sizeof(char))
#define UVERBS_TYPE_ALLOC_FD(_size, _order) \
{ \
.destroy_order = _order, \
.type_class = &uverbs_fd_class, \
.obj_size = (_size) + \
UVERBS_BUILD_BUG_ON((_size) < \
sizeof(struct ib_uobject_file)),\
}
#define UVERBS_TYPE_ALLOC_IDR_SZ(_size, _order) \
{ \
.destroy_order = _order, \