Add ib_ucontext to the uverbs_attr_bundle sent down the iocl and cmd flows
as soon as the flow has ib_uobject to make sure the function
rdma_get_ucontext will never fail in those flows.
Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@xxxxxxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 2 +-
drivers/infiniband/core/uverbs_ioctl.c | 3 ++
drivers/infiniband/core/uverbs_main.c | 12 ++-----
drivers/infiniband/core/uverbs_std_types.c | 37 ++++++++++++++++++++++
include/rdma/uverbs_ioctl.h | 1 +
include/rdma/uverbs_std_types.h | 16 ++++++----
6 files changed, 54 insertions(+), 17 deletions(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index d4f1a2ef5015..bd8bcab01e86 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2620,7 +2620,7 @@ void flow_resources_add(struct ib_uflow_resources *uflow_res,
}
EXPORT_SYMBOL(flow_resources_add);
-static int kern_spec_to_ib_spec_action(const struct uverbs_attr_bundle *attrs,
+static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
struct ib_uverbs_flow_spec *kern_spec,
union ib_flow_spec *ib_spec,
struct ib_uflow_resources *uflow_res)
diff --git a/drivers/infiniband/core/uverbs_ioctl.c b/drivers/infiniband/core/uverbs_ioctl.c
index 8c81ff698052..5d3251a51850 100644
--- a/drivers/infiniband/core/uverbs_ioctl.c
+++ b/drivers/infiniband/core/uverbs_ioctl.c
@@ -198,6 +198,7 @@ static int uverbs_process_idrs_array(struct bundle_priv *pbundle,
ret = PTR_ERR(attr->uobjects[i]);
break;
}
+ pbundle->bundle.context = attr->uobjects[i]->context;
}
attr->len = i;
@@ -315,6 +316,7 @@ static int uverbs_process_attr(struct bundle_priv *pbundle,
uattr->data_s64);
if (IS_ERR(o_attr->uobject))
return PTR_ERR(o_attr->uobject);
+ pbundle->bundle.context = o_attr->uobject->context;
__set_bit(attr_bkey, pbundle->uobj_finalize);
if (spec->u.obj.access == UVERBS_ACCESS_NEW) {
@@ -564,6 +566,7 @@ static int ib_uverbs_cmd_verbs(struct ib_uverbs_file *ufile,
pbundle->method_elm = method_elm;
pbundle->method_key = attrs_iter.index;
pbundle->bundle.ufile = ufile;
+ pbundle->bundle.context = NULL; /* only valid if bundle has uobject */
pbundle->radix = &uapi->radix;
pbundle->radix_slots = slot;
pbundle->radix_slots_len = radix_tree_chunk_size(&attrs_iter);
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 996f167d1436..fb2f6f98204e 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -113,15 +113,8 @@ struct ib_ucontext *rdma_get_ucontext(struct ib_udata *udata)
if (!udata)
return ERR_PTR(-EIO);
- /*
- * FIXME: Really all cases that get here with a udata will have
- * already called ib_uverbs_get_ucontext_file, or located a uobject
- * that points to a ucontext. We could store that result in the udata
- * so this function can't fail.
- */
- return ib_uverbs_get_ucontext_file(
- container_of(udata, struct uverbs_attr_bundle, driver_udata)
- ->ufile);
+ return (container_of(udata, struct uverbs_attr_bundle, driver_udata)
+ ->context) ? : ERR_PTR(-EIO);
}
EXPORT_SYMBOL(rdma_get_ucontext);
@@ -715,6 +708,7 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
buf += sizeof(hdr);
bundle.ufile = file;
+ bundle.context = NULL; /* only valid if bundle has uobject */
if (!method_elm->is_ex) {
size_t in_len = hdr.in_words * 4 - sizeof(hdr);
size_t out_len = hdr.out_words * 4;
diff --git a/drivers/infiniband/core/uverbs_std_types.c b/drivers/infiniband/core/uverbs_std_types.c
index cbc72312eb41..e1113bc1928b 100644
--- a/drivers/infiniband/core/uverbs_std_types.c
+++ b/drivers/infiniband/core/uverbs_std_types.c
@@ -39,6 +39,43 @@
#include "rdma_core.h"
#include "uverbs.h"
+struct ib_uobject *uobj_get_read(enum uverbs_default_objects type,
+ u32 object_id,
+ struct uverbs_attr_bundle *attrs)
+{
+ struct ib_uobject *uobj;
+
+ uobj = rdma_lookup_get_uobject(uobj_get_type(attrs, type),
+ attrs->ufile,
+ _uobj_check_id(object_id),
+ UVERBS_LOOKUP_READ);
+ if (IS_ERR(uobj))
+ return uobj;
+
+ attrs->context = uobj->context;
+
+ return uobj;
+}
+
+struct ib_uobject *uobj_get_write(enum uverbs_default_objects type,
+ u32 object_id,
+ struct uverbs_attr_bundle *attrs)
+{
+ struct ib_uobject *uobj;
+
+ uobj = rdma_lookup_get_uobject(uobj_get_type(attrs, type),
+ attrs->ufile,
+ _uobj_check_id(object_id),
+ UVERBS_LOOKUP_WRITE);
+
+ if (IS_ERR(uobj))
+ return uobj;
+
+ attrs->context = uobj->context;
+
+ return uobj;
+}
+
static int uverbs_free_ah(struct ib_uobject *uobject,
enum rdma_remove_reason why)
{
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h
index 27da906beea7..b14a9ee786e9 100644
--- a/include/rdma/uverbs_ioctl.h
+++ b/include/rdma/uverbs_ioctl.h
@@ -652,6 +652,7 @@ struct uverbs_attr_bundle {
struct ib_udata driver_udata;
struct ib_udata ucore;
struct ib_uverbs_file *ufile;
+ struct ib_ucontext *context;
DECLARE_BITMAP(attr_present, UVERBS_API_ATTR_BKEY_LEN);
struct uverbs_attr attrs[];
};
diff --git a/include/rdma/uverbs_std_types.h b/include/rdma/uverbs_std_types.h
index 883abcf6d36e..e19d0eec16fa 100644
--- a/include/rdma/uverbs_std_types.h
+++ b/include/rdma/uverbs_std_types.h
@@ -48,9 +48,9 @@
#define uobj_get_type(_attrs, _object) \
uapi_get_object((_attrs)->ufile->device->uapi, _object)
-#define uobj_get_read(_type, _id, _attrs) \
- rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
- _uobj_check_id(_id), UVERBS_LOOKUP_READ)
+struct ib_uobject *uobj_get_read(enum uverbs_default_objects type,
+ u32 object_id,
+ struct uverbs_attr_bundle *attrs);
#define ufd_get_read(_type, _fdnum, _attrs) \
rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
@@ -67,9 +67,9 @@ static inline void *_uobj_get_obj_read(struct ib_uobject *uobj)
((struct ib_##_object *)_uobj_get_obj_read( \
uobj_get_read(_type, _id, _attrs)))
-#define uobj_get_write(_type, _id, _attrs) \
- rdma_lookup_get_uobject(uobj_get_type(_attrs, _type), (_attrs)->ufile, \
- _uobj_check_id(_id), UVERBS_LOOKUP_WRITE)
+struct ib_uobject *uobj_get_write(enum uverbs_default_objects type,
+ u32 object_id,
+ struct uverbs_attr_bundle *attrs);
int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id,
const struct uverbs_attr_bundle *attrs);
@@ -123,8 +123,10 @@ __uobj_alloc(const struct uverbs_api_object *obj,
{
struct ib_uobject *uobj = rdma_alloc_begin_uobject(obj, attrs->ufile);
- if (!IS_ERR(uobj))
+ if (!IS_ERR(uobj)) {
*ib_dev = uobj->context->device;
+ attrs->context = uobj->context;
+ }
return uobj;
}
--
2.17.2
