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IB/uverbs: Add an ib_uobject getter to ioctl() infrastructure

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Previously, the user had to dig inside the attribute to get the uobject.
Add a helper function that correctly extract it (and do the required
checks) for him/her.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Matan Barak 2018-05-31 16:43:28 +03:00 committed by Leon Romanovsky
parent 5f9bf63ae8
commit 3efa38125b
3 changed files with 25 additions and 13 deletions
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23
drivers/infiniband/core/uverbs_std_types_cq.c
View file

@ -65,7 +65,6 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
struct ib_cq_init_attr attr = {};
struct ib_cq *cq;
struct ib_uverbs_completion_event_file *ev_file = NULL;
const struct uverbs_attr *ev_file_attr;
struct ib_uobject *ev_file_uobj;
if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_CREATE_CQ))
@ -87,10 +86,8 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
UVERBS_ATTR_CREATE_CQ_FLAGS)))
return -EFAULT;
ev_file_attr = uverbs_attr_get(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL);
if (!IS_ERR(ev_file_attr)) {
ev_file_uobj = ev_file_attr->obj_attr.uobject;
ev_file_uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_CREATE_CQ_COMP_CHANNEL);
if (!IS_ERR(ev_file_uobj)) {
ev_file = container_of(ev_file_uobj,
struct ib_uverbs_completion_event_file,
uobj_file.uobj);
@ -102,8 +99,8 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
goto err_event_file;
}
obj = container_of(uverbs_attr_get(attrs,
UVERBS_ATTR_CREATE_CQ_HANDLE)->obj_attr.uobject,
obj = container_of(uverbs_attr_get_uobject(attrs,
UVERBS_ATTR_CREATE_CQ_HANDLE),
typeof(*obj), uobject);
obj->uverbs_file = ucontext->ufile;
obj->comp_events_reported = 0;
@ -170,13 +167,17 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(struct ib_device *ib_dev,
struct ib_uverbs_file *file,
struct uverbs_attr_bundle *attrs)
{
struct ib_uverbs_destroy_cq_resp resp;
struct ib_uobject *uobj =
uverbs_attr_get(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE)->obj_attr.uobject;
struct ib_ucq_object *obj = container_of(uobj, struct ib_ucq_object,
uobject);
uverbs_attr_get_uobject(attrs, UVERBS_ATTR_DESTROY_CQ_HANDLE);
struct ib_uverbs_destroy_cq_resp resp;
struct ib_ucq_object *obj;
int ret;
if (IS_ERR(uobj))
return PTR_ERR(uobj);
obj = container_of(uobj, struct ib_ucq_object, uobject);
if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_DESTROY_CQ))
return -EOPNOTSUPP;

4
drivers/infiniband/core/uverbs_std_types_flow_action.c
View file

@ -320,7 +320,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_FLOW_ACTION_ESP_CREATE)(struct ib_device
return ret;
/* No need to check as this attribute is marked as MANDATORY */
uobj = uverbs_attr_get(attrs, UVERBS_ATTR_FLOW_ACTION_ESP_HANDLE)->obj_attr.uobject;
uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_FLOW_ACTION_ESP_HANDLE);
action = ib_dev->create_flow_action_esp(ib_dev, &esp_attr.hdr, attrs);
if (IS_ERR(action))
return PTR_ERR(action);
@ -350,7 +350,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_FLOW_ACTION_ESP_MODIFY)(struct ib_device
if (ret)
return ret;
uobj = uverbs_attr_get(attrs, UVERBS_ATTR_FLOW_ACTION_ESP_HANDLE)->obj_attr.uobject;
uobj = uverbs_attr_get_uobject(attrs, UVERBS_ATTR_FLOW_ACTION_ESP_HANDLE);
action = uobj->object;
if (action->type != IB_FLOW_ACTION_ESP)

11
include/rdma/uverbs_ioctl.h
View file

@ -420,6 +420,17 @@ static inline void *uverbs_attr_get_obj(const struct uverbs_attr_bundle *attrs_b
return uobj->object;
}
static inline struct ib_uobject *uverbs_attr_get_uobject(const struct uverbs_attr_bundle *attrs_bundle,
u16 idx)
{
const struct uverbs_attr *attr = uverbs_attr_get(attrs_bundle, idx);
if (IS_ERR(attr))
return ERR_CAST(attr);
return attr->obj_attr.uobject;
}
static inline int uverbs_copy_to(const struct uverbs_attr_bundle *attrs_bundle,
size_t idx, const void *from, size_t size)
{