hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

IB/uverbs: Replace ib_ucontext with ib_uverbs_file in core function calls 

The correct handle to refer to the idr/etc is ib_uverbs_file, revise all
the core APIs to use this instead. The user API are left as wrappers
that automatically convert a ucontext to a ufile for now.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Jason Gunthorpe 2018-07-04 11:32:08 +03:00
parent 6a5e9c8841
commit 6ef1c82821
6 changed files with 62 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

66
drivers/infiniband/core/rdma_core.c
View File

@ -139,7 +139,7 @@ int __uobj_perform_destroy(const struct uverbs_obj_type *type, int id,
struct ib_uobject *uobj;
int ret;
uobj = rdma_lookup_get_uobject(type, ufile->ucontext, id, true);
uobj = rdma_lookup_get_uobject(type, ufile, id, true);
if (IS_ERR(uobj))
return PTR_ERR(uobj);
@ -150,7 +150,7 @@ int __uobj_perform_destroy(const struct uverbs_obj_type *type, int id,
return success_res;
}
static struct ib_uobject *alloc_uobj(struct ib_ucontext *context,
static struct ib_uobject *alloc_uobj(struct ib_uverbs_file *ufile,
const struct uverbs_obj_type *type)
{
struct ib_uobject *uobj = kzalloc(type->obj_size, GFP_KERNEL);
@ -161,8 +161,8 @@ static struct ib_uobject *alloc_uobj(struct ib_ucontext *context,
* user_handle should be filled by the handler,
* The object is added to the list in the commit stage.
*/
uobj->ufile = context->ufile;
uobj->context = context;
uobj->ufile = ufile;
uobj->context = ufile->ucontext;
uobj->type = type;
/*
* Allocated objects start out as write locked to deny any other
@ -210,15 +210,15 @@ static void uverbs_idr_remove_uobj(struct ib_uobject *uobj)
}
/* Returns the ib_uobject or an error. The caller should check for IS_ERR. */
static struct ib_uobject *lookup_get_idr_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext,
int id, bool exclusive)
static struct ib_uobject *
lookup_get_idr_uobject(const struct uverbs_obj_type *type,
struct ib_uverbs_file *ufile, int id, bool exclusive)
{
struct ib_uobject *uobj;
rcu_read_lock();
/* object won't be released as we're protected in rcu */
uobj = idr_find(&ucontext->ufile->idr, id);
uobj = idr_find(&ufile->idr, id);
if (!uobj) {
uobj = ERR_PTR(-ENOENT);
goto free;
@ -239,7 +239,7 @@ free:
}
static struct ib_uobject *lookup_get_fd_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext,
struct ib_uverbs_file *ufile,
int id, bool exclusive)
{
struct file *f;
@ -270,13 +270,13 @@ static struct ib_uobject *lookup_get_fd_uobject(const struct uverbs_obj_type *ty
}
struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext,
int id, bool exclusive)
struct ib_uverbs_file *ufile, int id,
bool exclusive)
{
struct ib_uobject *uobj;
int ret;
uobj = type->type_class->lookup_get(type, ucontext, id, exclusive);
uobj = type->type_class->lookup_get(type, ufile, id, exclusive);
if (IS_ERR(uobj))
return uobj;
@ -300,12 +300,12 @@ free:
}
static struct ib_uobject *alloc_begin_idr_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext)
struct ib_uverbs_file *ufile)
{
int ret;
struct ib_uobject *uobj;
uobj = alloc_uobj(ucontext, type);
uobj = alloc_uobj(ufile, type);
if (IS_ERR(uobj))
return uobj;
@ -313,7 +313,7 @@ static struct ib_uobject *alloc_begin_idr_uobject(const struct uverbs_obj_type *
if (ret)
goto uobj_put;
ret = ib_rdmacg_try_charge(&uobj->cg_obj, ucontext->device,
ret = ib_rdmacg_try_charge(&uobj->cg_obj, ufile->ucontext->device,
RDMACG_RESOURCE_HCA_OBJECT);
if (ret)
goto idr_remove;
@ -328,7 +328,7 @@ uobj_put:
}
static struct ib_uobject *alloc_begin_fd_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext)
struct ib_uverbs_file *ufile)
{
const struct uverbs_obj_fd_type *fd_type =
container_of(type, struct uverbs_obj_fd_type, type);
@ -341,7 +341,7 @@ static struct ib_uobject *alloc_begin_fd_uobject(const struct uverbs_obj_type *t
if (new_fd < 0)
return ERR_PTR(new_fd);
uobj = alloc_uobj(ucontext, type);
uobj = alloc_uobj(ufile, type);
if (IS_ERR(uobj)) {
put_unused_fd(new_fd);
return uobj;
@ -360,7 +360,7 @@ static struct ib_uobject *alloc_begin_fd_uobject(const struct uverbs_obj_type *t
uobj_file->uobj.id = new_fd;
uobj_file->uobj.object = filp;
uobj_file->ufile = ucontext->ufile;
uobj_file->ufile = ufile;
INIT_LIST_HEAD(&uobj->list);
kref_get(&uobj_file->ufile->ref);
@ -368,9 +368,9 @@ static struct ib_uobject *alloc_begin_fd_uobject(const struct uverbs_obj_type *t
}
struct ib_uobject *rdma_alloc_begin_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext)
struct ib_uverbs_file *ufile)
{
return type->type_class->alloc_begin(type, ucontext);
return type->type_class->alloc_begin(type, ufile);
}
static int __must_check remove_commit_idr_uobject(struct ib_uobject *uobj,
@ -669,10 +669,9 @@ void uverbs_close_fd(struct file *f)
kref_put(uverbs_file_ref, ib_uverbs_release_file);
}
static int __uverbs_cleanup_ucontext(struct ib_ucontext *ucontext,
enum rdma_remove_reason reason)
static int __uverbs_cleanup_ufile(struct ib_uverbs_file *ufile,
enum rdma_remove_reason reason)
{
struct ib_uverbs_file *ufile = ucontext->ufile;
struct ib_uobject *obj, *next_obj;
int ret = -EINVAL;
int err = 0;
@ -716,12 +715,11 @@ static int __uverbs_cleanup_ucontext(struct ib_ucontext *ucontext,
return ret;
}
void uverbs_cleanup_ucontext(struct ib_ucontext *ucontext, bool device_removed)
void uverbs_cleanup_ufile(struct ib_uverbs_file *ufile, bool device_removed)
{
enum rdma_remove_reason reason = device_removed ?
RDMA_REMOVE_DRIVER_REMOVE :
RDMA_REMOVE_CLOSE;
struct ib_uverbs_file *ufile = ucontext->ufile;
/*
* Waits for all remove_commit and alloc_commit to finish. Logically, We
@ -731,7 +729,7 @@ void uverbs_cleanup_ucontext(struct ib_ucontext *ucontext, bool device_removed)
down_write(&ufile->cleanup_rwsem);
ufile->ucontext->cleanup_retryable = true;
while (!list_empty(&ufile->uobjects))
if (__uverbs_cleanup_ucontext(ucontext, reason)) {
if (__uverbs_cleanup_ufile(ufile, reason)) {
/*
* No entry was cleaned-up successfully during this
* iteration
@ -741,7 +739,7 @@ void uverbs_cleanup_ucontext(struct ib_ucontext *ucontext, bool device_removed)
ufile->ucontext->cleanup_retryable = false;
if (!list_empty(&ufile->uobjects))
__uverbs_cleanup_ucontext(ucontext, reason);
__uverbs_cleanup_ufile(ufile, reason);
up_write(&ufile->cleanup_rwsem);
}
@ -757,19 +755,19 @@ const struct uverbs_obj_type_class uverbs_fd_class = {
};
EXPORT_SYMBOL(uverbs_fd_class);
struct ib_uobject *uverbs_get_uobject_from_context(const struct uverbs_obj_type *type_attrs,
struct ib_ucontext *ucontext,
enum uverbs_obj_access access,
int id)
struct ib_uobject *
uverbs_get_uobject_from_file(const struct uverbs_obj_type *type_attrs,
struct ib_uverbs_file *ufile,
enum uverbs_obj_access access, int id)
{
switch (access) {
case UVERBS_ACCESS_READ:
return rdma_lookup_get_uobject(type_attrs, ucontext, id, false);
return rdma_lookup_get_uobject(type_attrs, ufile, id, false);
case UVERBS_ACCESS_DESTROY:
case UVERBS_ACCESS_WRITE:
return rdma_lookup_get_uobject(type_attrs, ucontext, id, true);
return rdma_lookup_get_uobject(type_attrs, ufile, id, true);
case UVERBS_ACCESS_NEW:
return rdma_alloc_begin_uobject(type_attrs, ucontext);
return rdma_alloc_begin_uobject(type_attrs, ufile);
default:
WARN_ON(true);
return ERR_PTR(-EOPNOTSUPP);

21
drivers/infiniband/core/rdma_core.h
View File

@ -48,14 +48,8 @@ const struct uverbs_object_spec *uverbs_get_object(struct ib_uverbs_file *ufile,
uint16_t object);
const struct uverbs_method_spec *uverbs_get_method(const struct uverbs_object_spec *object,
uint16_t method);
/*
* These functions initialize the context and cleanups its uobjects.
* The context has a list of objects which is protected by a mutex
* on the context. initialize_ucontext should be called when we create
* a context.
* cleanup_ucontext removes all uobjects from the context and puts them.
*/
void uverbs_cleanup_ucontext(struct ib_ucontext *ucontext, bool device_removed);
void uverbs_cleanup_ufile(struct ib_uverbs_file *ufile, bool device_removed);
/*
* uverbs_uobject_get is called in order to increase the reference count on
@ -81,7 +75,7 @@ void uverbs_uobject_put(struct ib_uobject *uobject);
void uverbs_close_fd(struct file *f);
/*
* Get an ib_uobject that corresponds to the given id from ucontext, assuming
* Get an ib_uobject that corresponds to the given id from ufile, assuming
* the object is from the given type. Lock it to the required access when
* applicable.
* This function could create (access == NEW), destroy (access == DESTROY)
@ -89,10 +83,11 @@ void uverbs_close_fd(struct file *f);
* The action will be finalized only when uverbs_finalize_object or
* uverbs_finalize_objects are called.
*/
struct ib_uobject *uverbs_get_uobject_from_context(const struct uverbs_obj_type *type_attrs,
struct ib_ucontext *ucontext,
enum uverbs_obj_access access,
int id);
struct ib_uobject *
uverbs_get_uobject_from_file(const struct uverbs_obj_type *type_attrs,
struct ib_uverbs_file *ufile,
enum uverbs_obj_access access, int id);
/*
* Note that certain finalize stages could return a status:
* (a) alloc_commit could return a failure if the object is committed at the

4
drivers/infiniband/core/uverbs_ioctl.c
View File

@ -152,9 +152,9 @@ static int uverbs_process_attr(struct ib_uverbs_file *ufile,
if (!object)
return -EINVAL;
o_attr->uobject = uverbs_get_uobject_from_context(
o_attr->uobject = uverbs_get_uobject_from_file(
object->type_attrs,
ufile->ucontext,
ufile,
spec->u.obj.access,
(int)uattr->data);

15
drivers/infiniband/core/uverbs_main.c
View File

@ -227,12 +227,13 @@ void ib_uverbs_detach_umcast(struct ib_qp *qp,
}
}
static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
struct ib_ucontext *context,
bool device_removed)
static int ib_uverbs_cleanup_ufile(struct ib_uverbs_file *file,
bool device_removed)
{
struct ib_ucontext *context = file->ucontext;
context->closing = 1;
uverbs_cleanup_ucontext(context, device_removed);
uverbs_cleanup_ufile(file, device_removed);
put_pid(context->tgid);
ib_rdmacg_uncharge(&context->cg_obj, context->device,
@ -918,7 +919,7 @@ static int ib_uverbs_close(struct inode *inode, struct file *filp)
mutex_lock(&file->cleanup_mutex);
if (file->ucontext) {
ib_uverbs_cleanup_ucontext(file, file->ucontext, false);
ib_uverbs_cleanup_ufile(file, false);
file->ucontext = NULL;
}
mutex_unlock(&file->cleanup_mutex);
@ -1176,7 +1177,7 @@ static void ib_uverbs_free_hw_resources(struct ib_uverbs_device *uverbs_dev,
mutex_unlock(&file->cleanup_mutex);
/* At this point ib_uverbs_close cannot be running
* ib_uverbs_cleanup_ucontext
* ib_uverbs_cleanup_ufile
*/
if (ucontext) {
/* We must release the mutex before going ahead and
@ -1188,7 +1189,7 @@ static void ib_uverbs_free_hw_resources(struct ib_uverbs_device *uverbs_dev,
ib_uverbs_event_handler(&file->event_handler, &event);
ib_uverbs_disassociate_ucontext(ucontext);
mutex_lock(&file->cleanup_mutex);
ib_uverbs_cleanup_ucontext(file, ucontext, true);
ib_uverbs_cleanup_ufile(file, true);
mutex_unlock(&file->cleanup_mutex);
}

16
include/rdma/uverbs_std_types.h
View File

@ -48,28 +48,28 @@ static inline const struct uverbs_object_tree_def *uverbs_default_get_objects(vo
static inline struct ib_uobject *__uobj_get(const struct uverbs_obj_type *type,
bool write,
struct ib_ucontext *ucontext,
struct ib_uverbs_file *ufile,
int id)
{
return rdma_lookup_get_uobject(type, ucontext, id, write);
return rdma_lookup_get_uobject(type, ufile, id, write);
}
#define uobj_get_type(_object) UVERBS_OBJECT(_object).type_attrs
#define uobj_get_read(_type, _id, _ucontext) \
__uobj_get(uobj_get_type(_type), false, _ucontext, _id)
#define uobj_get_read(_type, _id, _ucontext) \
__uobj_get(uobj_get_type(_type), false, (_ucontext)->ufile, _id)
#define uobj_get_obj_read(_object, _type, _id, _ucontext) \
({ \
struct ib_uobject *__uobj = \
__uobj_get(uobj_get_type(_type), \
false, _ucontext, _id); \
false, (_ucontext)->ufile, _id); \
\
(struct ib_##_object *)(IS_ERR(__uobj) ? NULL : __uobj->object);\
})
#define uobj_get_write(_type, _id, _ucontext) \
__uobj_get(uobj_get_type(_type), true, _ucontext, _id)
#define uobj_get_write(_type, _id, _ucontext) \
__uobj_get(uobj_get_type(_type), true, (_ucontext)->ufile, _id)
int __uobj_perform_destroy(const struct uverbs_obj_type *type, int id,
struct ib_uverbs_file *ufile, int success_res);
@ -107,7 +107,7 @@ static inline void uobj_alloc_abort(struct ib_uobject *uobj)
static inline struct ib_uobject *__uobj_alloc(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext)
{
return rdma_alloc_begin_uobject(type, ucontext);
return rdma_alloc_begin_uobject(type, ucontext->ufile);
}
#define uobj_alloc(_type, ucontext) \

8
include/rdma/uverbs_types.h
View File

@ -72,12 +72,12 @@ struct uverbs_obj_type_class {
* reset flow).
*/
struct ib_uobject *(*alloc_begin)(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext);
struct ib_uverbs_file *ufile);
void (*alloc_commit)(struct ib_uobject *uobj);
void (*alloc_abort)(struct ib_uobject *uobj);
struct ib_uobject *(*lookup_get)(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext, int id,
struct ib_uverbs_file *ufile, int id,
bool exclusive);
void (*lookup_put)(struct ib_uobject *uobj, bool exclusive);
/*
@ -120,11 +120,11 @@ struct uverbs_obj_idr_type {
};
struct ib_uobject *rdma_lookup_get_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext,
struct ib_uverbs_file *ufile,
int id, bool exclusive);
void rdma_lookup_put_uobject(struct ib_uobject *uobj, bool exclusive);
struct ib_uobject *rdma_alloc_begin_uobject(const struct uverbs_obj_type *type,
struct ib_ucontext *ucontext);
struct ib_uverbs_file *ufile);
void rdma_alloc_abort_uobject(struct ib_uobject *uobj);
int __must_check rdma_remove_commit_uobject(struct ib_uobject *uobj);
int rdma_alloc_commit_uobject(struct ib_uobject *uobj);