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authorMatan Barak <matanb@mellanox.com>2017-08-03 16:06:56 +0300
committerDoug Ledford <dledford@redhat.com>2017-08-30 17:30:38 +0300
commitf43dbebfa32041826299bdccae0352887fa007ea (patch)
tree44a407271ba8b402f795c260f4758fcb519db885 /include/rdma
parenta0aa309c39de58b86b704654434431aeb5a8bdf1 (diff)
downloadlinux-f43dbebfa32041826299bdccae0352887fa007ea.tar.xz
IB/core: Add support to finalize objects in one transaction
The new ioctl based infrastructure either commits or rollbacks all objects of the method as one transaction. In order to do that, we introduce a notion of dealing with a collection of objects that are related to a specific method. This also requires adding a notion of a method and attribute. A method contains a hash of attributes, where each bucket contains several attributes. The attributes are hashed according to their namespace which resides in the four upper bits of the id. For example, an object could be a CQ, which has an action of CREATE_CQ. This action has multiple attributes. For example, the CQ's new handle and the comp_channel. Each layer in this hierarchy - objects, methods and attributes is split into namespaces. The basic example for that is one namespace representing the default entities and another one representing the driver specific entities. When declaring these methods and attributes, we actually declare their specifications. When a method is executed, we actually allocates some space to hold auxiliary information. This auxiliary information contains meta-data about the required objects, such as pointers to their type information, pointers to the uobjects themselves (if exist), etc. The specification, along with the auxiliary information we allocated and filled is given to the finalize_objects function. Signed-off-by: Matan Barak <matanb@mellanox.com> Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/uverbs_ioctl.h53
1 files changed, 53 insertions, 0 deletions
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h
index 6885b92db4a8..d3ec02b7d937 100644
--- a/include/rdma/uverbs_ioctl.h
+++ b/include/rdma/uverbs_ioctl.h
@@ -41,6 +41,12 @@
* =======================================
*/
+enum uverbs_attr_type {
+ UVERBS_ATTR_TYPE_NA,
+ UVERBS_ATTR_TYPE_IDR,
+ UVERBS_ATTR_TYPE_FD,
+};
+
enum uverbs_obj_access {
UVERBS_ACCESS_READ,
UVERBS_ACCESS_WRITE,
@@ -48,5 +54,52 @@ enum uverbs_obj_access {
UVERBS_ACCESS_DESTROY
};
+struct uverbs_attr_spec {
+ enum uverbs_attr_type type;
+ struct {
+ /*
+ * higher bits mean the namespace and lower bits mean
+ * the type id within the namespace.
+ */
+ u16 obj_type;
+ u8 access;
+ } obj;
+};
+
+struct uverbs_attr_spec_hash {
+ size_t num_attrs;
+ struct uverbs_attr_spec attrs[0];
+};
+
+struct uverbs_obj_attr {
+ struct ib_uobject *uobject;
+};
+
+struct uverbs_attr {
+ struct uverbs_obj_attr obj_attr;
+};
+
+struct uverbs_attr_bundle_hash {
+ /* if bit i is set, it means attrs[i] contains valid information */
+ unsigned long *valid_bitmap;
+ size_t num_attrs;
+ /*
+ * arrays of attributes, each element corresponds to the specification
+ * of the attribute in the same index.
+ */
+ struct uverbs_attr *attrs;
+};
+
+struct uverbs_attr_bundle {
+ size_t num_buckets;
+ struct uverbs_attr_bundle_hash hash[];
+};
+
+static inline bool uverbs_attr_is_valid_in_hash(const struct uverbs_attr_bundle_hash *attrs_hash,
+ unsigned int idx)
+{
+ return test_bit(idx, attrs_hash->valid_bitmap);
+}
+
#endif