1 files changed, 21 insertions, 2 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 62b61527bcc4..689028257fcc 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -1045,11 +1045,30 @@ static inline int ethtool_mm_frag_size_min_to_add(u32 val_min, u32 *val_add,
 
 /**
  * ethtool_sprintf - Write formatted string to ethtool string data
- * @data: Pointer to start of string to update
+ * @data: Pointer to a pointer to the start of string to update
  * @fmt: Format of string to write
  *
- * Write formatted string to data. Update data to point at start of
+ * Write formatted string to *data. Update *data to point at start of
  * next string.
  */
 extern __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...);
+
+/* Link mode to forced speed capabilities maps */
+struct ethtool_forced_speed_map {
+	u32		speed;
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(caps);
+
+	const u32	*cap_arr;
+	u32		arr_size;
+};
+
+#define ETHTOOL_FORCED_SPEED_MAP(prefix, value)				\
+{									\
+	.speed		= SPEED_##value,				\
+	.cap_arr	= prefix##_##value,				\
+	.arr_size	= ARRAY_SIZE(prefix##_##value),			\
+}
+
+void
+ethtool_forced_speed_maps_init(struct ethtool_forced_speed_map *maps, u32 size);
 #endif /* _LINUX_ETHTOOL_H */