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RDMA/core: Move ib_uverbs_file struct to uverbs_types.h

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In light of the previous commit, make the ib_uverbs_file accessible to
drivers by moving its definition to uverbs_types.h, to allow drivers to
freely access the struct argument and create a personalized cleanup flow.

For the same reason expose uverbs_try_lock_object function to allow driver
to safely access the uverbs objects.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Link: https://patch.msgid.link/29b718e0dca35daa5f496320a39284fc1f5a1722.1730373303.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Patrisious Haddad 2024-10-31 13:22:52 +02:00 committed by Leon Romanovsky
parent dc6be4418a
commit 27ed2f0080
3 changed files with 36 additions and 33 deletions
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5
drivers/infiniband/core/rdma_core.c
View File

@ -58,8 +58,8 @@ void uverbs_uobject_put(struct ib_uobject *uobject)
}
EXPORT_SYMBOL(uverbs_uobject_put);
static int uverbs_try_lock_object(struct ib_uobject *uobj,
enum rdma_lookup_mode mode)
int uverbs_try_lock_object(struct ib_uobject *uobj,
enum rdma_lookup_mode mode)
{
/*
* When a shared access is required, we use a positive counter. Each
@ -84,6 +84,7 @@ static int uverbs_try_lock_object(struct ib_uobject *uobj,
}
return 0;
}
EXPORT_SYMBOL(uverbs_try_lock_object);
static void assert_uverbs_usecnt(struct ib_uobject *uobj,
enum rdma_lookup_mode mode)

31
drivers/infiniband/core/uverbs.h
View File

@ -133,37 +133,6 @@ struct ib_uverbs_completion_event_file {
struct ib_uverbs_event_queue ev_queue;
};
struct ib_uverbs_file {
struct kref ref;
struct ib_uverbs_device *device;
struct mutex ucontext_lock;
/*
* ucontext must be accessed via ib_uverbs_get_ucontext() or with
* ucontext_lock held
*/
struct ib_ucontext *ucontext;
struct ib_uverbs_async_event_file *default_async_file;
struct list_head list;
/*
* To access the uobjects list hw_destroy_rwsem must be held for write
* OR hw_destroy_rwsem held for read AND uobjects_lock held.
* hw_destroy_rwsem should be called across any destruction of the HW
* object of an associated uobject.
*/
struct rw_semaphore hw_destroy_rwsem;
spinlock_t uobjects_lock;
struct list_head uobjects;
struct mutex umap_lock;
struct list_head umaps;
struct page *disassociate_page;
struct xarray idr;
struct mutex disassociation_lock;
};
struct ib_uverbs_event {
union {
struct ib_uverbs_async_event_desc async;

33
include/rdma/uverbs_types.h
View File

@ -134,6 +134,8 @@ static inline void uverbs_uobject_get(struct ib_uobject *uobject)
}
void uverbs_uobject_put(struct ib_uobject *uobject);
int uverbs_try_lock_object(struct ib_uobject *uobj, enum rdma_lookup_mode mode);
struct uverbs_obj_fd_type {
/*
* In fd based objects, uverbs_obj_type_ops points to generic
@ -150,6 +152,37 @@ struct uverbs_obj_fd_type {
int flags;
};
struct ib_uverbs_file {
struct kref ref;
struct ib_uverbs_device *device;
struct mutex ucontext_lock;
/*
* ucontext must be accessed via ib_uverbs_get_ucontext() or with
* ucontext_lock held
*/
struct ib_ucontext *ucontext;
struct ib_uverbs_async_event_file *default_async_file;
struct list_head list;
/*
* To access the uobjects list hw_destroy_rwsem must be held for write
* OR hw_destroy_rwsem held for read AND uobjects_lock held.
* hw_destroy_rwsem should be called across any destruction of the HW
* object of an associated uobject.
*/
struct rw_semaphore hw_destroy_rwsem;
spinlock_t uobjects_lock;
struct list_head uobjects;
struct mutex umap_lock;
struct list_head umaps;
struct page *disassociate_page;
struct xarray idr;
struct mutex disassociation_lock;
};
extern const struct uverbs_obj_type_class uverbs_idr_class;
extern const struct uverbs_obj_type_class uverbs_fd_class;
int uverbs_uobject_fd_release(struct inode *inode, struct file *filp);