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-rw-r--r--net/ethtool/netlink.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h
index 3753787ba233..744b3ab966b0 100644
--- a/net/ethtool/netlink.h
+++ b/net/ethtool/netlink.h
@@ -112,6 +112,32 @@ static inline void ethnl_update_u8(u8 *dst, const struct nlattr *attr,
}
/**
+ * ethnl_update_bool() - update bool from NLA_U8 attribute
+ * @dst: value to update
+ * @attr: netlink attribute with new value or null
+ * @mod: pointer to bool for modification tracking
+ *
+ * Use the u8 value from NLA_U8 netlink attribute @attr to set bool variable
+ * pointed to by @dst to false (if zero) or 1 (if not); do nothing if @attr is
+ * null. Bool pointed to by @mod is set to true if this function changed the
+ * logical value of *dst, otherwise it is left as is.
+ */
+static inline void ethnl_update_bool(bool *dst, const struct nlattr *attr,
+ bool *mod)
+{
+ u8 val;
+
+ if (!attr)
+ return;
+ val = !!nla_get_u8(attr);
+ if (*dst == val)
+ return;
+
+ *dst = val;
+ *mod = true;
+}
+
+/**
* ethnl_update_bool32() - update u32 used as bool from NLA_U8 attribute
* @dst: value to update
* @attr: netlink attribute with new value or null