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hc
2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f 
 kernel/include/uapi/linux/netlink.h
....@@ -129,6 +129,7 @@
129129  * @NLMSGERR_ATTR_COOKIE: arbitrary subsystem specific cookie to
130130  *	be used - in the success case - to identify a created
131131  *	object or operation or similar (binary)
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+ * @NLMSGERR_ATTR_POLICY: policy for a rejected attribute
132133  * @__NLMSGERR_ATTR_MAX: number of attributes
133134  * @NLMSGERR_ATTR_MAX: highest attribute number
134135  */
....@@ -137,6 +138,7 @@
137138 	NLMSGERR_ATTR_MSG,
138139 	NLMSGERR_ATTR_OFFS,
139140 	NLMSGERR_ATTR_COOKIE,
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+	NLMSGERR_ATTR_POLICY,
140142 
141143 	__NLMSGERR_ATTR_MAX,
142144 	NLMSGERR_ATTR_MAX = __NLMSGERR_ATTR_MAX - 1
....@@ -155,6 +157,7 @@
155157 #define NETLINK_LIST_MEMBERSHIPS	9
156158 #define NETLINK_CAP_ACK			10
157159 #define NETLINK_EXT_ACK			11
160
+#define NETLINK_GET_STRICT_CHK		12
158161 
159162 struct nl_pktinfo {
160163 	__u32	group;
....@@ -248,4 +251,109 @@
248251 	__u32 selector;
249252 };
250253 
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+/*
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+ * policy descriptions - it's specific to each family how this is used
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+ * Normally, it should be retrieved via a dump inside another attribute
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+ * specifying where it applies.
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+ */
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+
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+/**
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+ * enum netlink_attribute_type - type of an attribute
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+ * @NL_ATTR_TYPE_INVALID: unused
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+ * @NL_ATTR_TYPE_FLAG: flag attribute (present/not present)
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+ * @NL_ATTR_TYPE_U8: 8-bit unsigned attribute
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+ * @NL_ATTR_TYPE_U16: 16-bit unsigned attribute
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+ * @NL_ATTR_TYPE_U32: 32-bit unsigned attribute
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+ * @NL_ATTR_TYPE_U64: 64-bit unsigned attribute
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+ * @NL_ATTR_TYPE_S8: 8-bit signed attribute
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+ * @NL_ATTR_TYPE_S16: 16-bit signed attribute
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+ * @NL_ATTR_TYPE_S32: 32-bit signed attribute
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+ * @NL_ATTR_TYPE_S64: 64-bit signed attribute
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+ * @NL_ATTR_TYPE_BINARY: binary data, min/max length may be specified
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+ * @NL_ATTR_TYPE_STRING: string, min/max length may be specified
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+ * @NL_ATTR_TYPE_NUL_STRING: NUL-terminated string,
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+ *	min/max length may be specified
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+ * @NL_ATTR_TYPE_NESTED: nested, i.e. the content of this attribute
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+ *	consists of sub-attributes. The nested policy and maxtype
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+ *	inside may be specified.
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+ * @NL_ATTR_TYPE_NESTED_ARRAY: nested array, i.e. the content of this
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+ *	attribute contains sub-attributes whose type is irrelevant
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+ *	(just used to separate the array entries) and each such array
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+ *	entry has attributes again, the policy for those inner ones
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+ *	and the corresponding maxtype may be specified.
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+ * @NL_ATTR_TYPE_BITFIELD32: &struct nla_bitfield32 attribute
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+ */
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+enum netlink_attribute_type {
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+	NL_ATTR_TYPE_INVALID,
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+
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+	NL_ATTR_TYPE_FLAG,
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+
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+	NL_ATTR_TYPE_U8,
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+	NL_ATTR_TYPE_U16,
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+	NL_ATTR_TYPE_U32,
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+	NL_ATTR_TYPE_U64,
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+
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+	NL_ATTR_TYPE_S8,
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+	NL_ATTR_TYPE_S16,
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+	NL_ATTR_TYPE_S32,
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+	NL_ATTR_TYPE_S64,
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+
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+	NL_ATTR_TYPE_BINARY,
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+	NL_ATTR_TYPE_STRING,
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+	NL_ATTR_TYPE_NUL_STRING,
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+
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+	NL_ATTR_TYPE_NESTED,
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+	NL_ATTR_TYPE_NESTED_ARRAY,
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+
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+	NL_ATTR_TYPE_BITFIELD32,
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+};
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+
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+/**
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+ * enum netlink_policy_type_attr - policy type attributes
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+ * @NL_POLICY_TYPE_ATTR_UNSPEC: unused
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+ * @NL_POLICY_TYPE_ATTR_TYPE: type of the attribute,
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+ *	&enum netlink_attribute_type (U32)
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+ * @NL_POLICY_TYPE_ATTR_MIN_VALUE_S: minimum value for signed
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+ *	integers (S64)
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+ * @NL_POLICY_TYPE_ATTR_MAX_VALUE_S: maximum value for signed
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+ *	integers (S64)
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+ * @NL_POLICY_TYPE_ATTR_MIN_VALUE_U: minimum value for unsigned
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+ *	integers (U64)
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+ * @NL_POLICY_TYPE_ATTR_MAX_VALUE_U: maximum value for unsigned
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+ *	integers (U64)
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+ * @NL_POLICY_TYPE_ATTR_MIN_LENGTH: minimum length for binary
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+ *	attributes, no minimum if not given (U32)
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+ * @NL_POLICY_TYPE_ATTR_MAX_LENGTH: maximum length for binary
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+ *	attributes, no maximum if not given (U32)
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+ * @NL_POLICY_TYPE_ATTR_POLICY_IDX: sub policy for nested and
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+ *	nested array types (U32)
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+ * @NL_POLICY_TYPE_ATTR_POLICY_MAXTYPE: maximum sub policy
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+ *	attribute for nested and nested array types, this can
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+ *	in theory be < the size of the policy pointed to by
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+ *	the index, if limited inside the nesting (U32)
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+ * @NL_POLICY_TYPE_ATTR_BITFIELD32_MASK: valid mask for the
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+ *	bitfield32 type (U32)
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+ * @NL_POLICY_TYPE_ATTR_MASK: mask of valid bits for unsigned integers (U64)
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+ * @NL_POLICY_TYPE_ATTR_PAD: pad attribute for 64-bit alignment
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+ */
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+enum netlink_policy_type_attr {
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+	NL_POLICY_TYPE_ATTR_UNSPEC,
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+	NL_POLICY_TYPE_ATTR_TYPE,
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+	NL_POLICY_TYPE_ATTR_MIN_VALUE_S,
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+	NL_POLICY_TYPE_ATTR_MAX_VALUE_S,
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+	NL_POLICY_TYPE_ATTR_MIN_VALUE_U,
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+	NL_POLICY_TYPE_ATTR_MAX_VALUE_U,
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+	NL_POLICY_TYPE_ATTR_MIN_LENGTH,
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+	NL_POLICY_TYPE_ATTR_MAX_LENGTH,
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+	NL_POLICY_TYPE_ATTR_POLICY_IDX,
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+	NL_POLICY_TYPE_ATTR_POLICY_MAXTYPE,
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+	NL_POLICY_TYPE_ATTR_BITFIELD32_MASK,
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+	NL_POLICY_TYPE_ATTR_PAD,
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+	NL_POLICY_TYPE_ATTR_MASK,
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+
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+	/* keep last */
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+	__NL_POLICY_TYPE_ATTR_MAX,
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+	NL_POLICY_TYPE_ATTR_MAX = __NL_POLICY_TYPE_ATTR_MAX - 1
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+};
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+
251359 #endif /* _UAPI__LINUX_NETLINK_H */