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-rw-r--r--include/rdma/uverbs_ioctl.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/include/rdma/uverbs_ioctl.h b/include/rdma/uverbs_ioctl.h
index faaaec7be36a..3d6ac684b8f0 100644
--- a/include/rdma/uverbs_ioctl.h
+++ b/include/rdma/uverbs_ioctl.h
@@ -51,6 +51,7 @@ enum uverbs_attr_type {
UVERBS_ATTR_TYPE_PTR_OUT,
UVERBS_ATTR_TYPE_IDR,
UVERBS_ATTR_TYPE_FD,
+ UVERBS_ATTR_TYPE_ENUM_IN,
};
enum uverbs_obj_access {
@@ -95,6 +96,18 @@ struct uverbs_attr_spec {
u16 obj_type;
u8 access;
} obj;
+ struct {
+ enum uverbs_attr_type type;
+ /* Combination of bits from enum UVERBS_ATTR_SPEC_F_XXXX */
+ u8 flags;
+ u8 num_elems;
+ /*
+ * The enum attribute can select one of the attributes
+ * contained in the ids array. Currently only PTR_IN
+ * attributes are supported in the ids array.
+ */
+ const struct uverbs_attr_spec *ids;
+ } enum_def;
};
};
@@ -215,6 +228,10 @@ struct uverbs_object_tree_def {
UVERBS_ATTR(_id, UVERBS_ATTR_TYPE_PTR_OUT, ptr, _len, ##__VA_ARGS__)
#define UVERBS_ATTR_PTR_OUT(_id, _type, ...) \
UVERBS_ATTR_PTR_OUT_SZ(_id, _type, ##__VA_ARGS__)
+#define UVERBS_ATTR_ENUM_IN(_id, _enum_arr, ...) \
+ UVERBS_ATTR(_id, UVERBS_ATTR_TYPE_ENUM_IN, enum_def, \
+ .ids = (_enum_arr), \
+ .num_elems = ARRAY_SIZE(_enum_arr), ##__VA_ARGS__)
/*
* In new compiler, UVERBS_ATTR_IDR (and FD) could be simplified by declaring
@@ -254,6 +271,11 @@ struct uverbs_object_tree_def {
#define DECLARE_UVERBS_ATTR_SPEC(_name, ...) \
const struct uverbs_attr_def _name = __VA_ARGS__
+#define DECLARE_UVERBS_ENUM(_name, ...) \
+ const struct uverbs_enum_spec _name = { \
+ .len = ARRAY_SIZE(((struct uverbs_attr_spec[]){__VA_ARGS__})),\
+ .ids = {__VA_ARGS__}, \
+ }
#define _UVERBS_METHOD_ATTRS_SZ(...) \
(sizeof((const struct uverbs_attr_def * const []){__VA_ARGS__}) /\
sizeof(const struct uverbs_attr_def *))
@@ -305,6 +327,7 @@ struct uverbs_ptr_attr {
u16 len;
/* Combination of bits from enum UVERBS_ATTR_F_XXXX */
u16 flags;
+ u8 enum_id;
};
struct uverbs_obj_attr {
@@ -374,6 +397,17 @@ static inline const struct uverbs_attr *uverbs_attr_get(const struct uverbs_attr
return &attrs_bundle->hash[idx_bucket].attrs[idx & ~UVERBS_ID_NS_MASK];
}
+static inline int uverbs_attr_get_enum_id(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 PTR_ERR(attr);
+
+ return attr->ptr_attr.enum_id;
+}
+
static inline int uverbs_copy_to(const struct uverbs_attr_bundle *attrs_bundle,
size_t idx, const void *from, size_t size)
{