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Date: Sun, 27 May 2018 13:23:34 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Doug Ledford <dledford@...hat.com>,
Jason Gunthorpe <jgg@...lanox.com>
Cc: Leon Romanovsky <leonro@...lanox.com>,
RDMA mailing list <linux-rdma@...r.kernel.org>,
Boris Pismenny <borisp@...lanox.com>,
Matan Barak <matanb@...lanox.com>,
Raed Salem <raeds@...lanox.com>,
Yishai Hadas <yishaih@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>,
linux-netdev <netdev@...r.kernel.org>
Subject: [PATCH rdma-next v1 01/13] IB/uverbs: Add an ib_uobject getter to ioctl() infrastructure
From: Matan Barak <matanb@...lanox.com>
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@...lanox.com>
Signed-off-by: Leon Romanovsky <leonro@...lanox.com>
---
drivers/infiniband/core/uverbs_std_types_cq.c | 23 +++++++++++-----------
.../infiniband/core/uverbs_std_types_flow_action.c | 4 ++--
include/rdma/uverbs_ioctl.h | 11 +++++++++++
3 files changed, 25 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/core/uverbs_std_types_cq.c b/drivers/infiniband/core/uverbs_std_types_cq.c
index b0dbae9dd0d7..3d293d01afea 100644
--- a/drivers/infiniband/core/uverbs_std_types_cq.c
+++ b/drivers/infiniband/core/uverbs_std_types_cq.c
@@ -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;
diff --git a/drivers/infiniband/core/uverbs_std_types_flow_action.c b/drivers/infiniband/core/uverbs_std_types_flow_action.c
index b4f016dfa23d..a7be51cf2e42 100644
--- a/drivers/infiniband/core/uverbs_std_types_flow_action.c
+++ b/drivers/infiniband/core/uverbs_std_types_flow_action.c
@@ -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)
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h
index 4a4201d997a7..7ac6271a5ee0 100644
--- a/include/rdma/uverbs_ioctl.h
+++ b/include/rdma/uverbs_ioctl.h
@@ -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)
{
--
2.14.3
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