ethtool: Add forced speed to supported link modes maps

The need to map Ethtool forced speeds to Ethtool supported link modes is
common among drivers. To support this, add a common structure for forced
speed maps and a function to init them.  This is solution was originally
introduced in commit 1d4e4ecccb11 ("qede: populate supported link modes
maps on module init") for qede driver.

ethtool_forced_speed_maps_init() should be called during driver init
with an array of struct ethtool_forced_speed_map to populate the mapping.

Definitions for maps themselves are left in the driver code, as the sets
of supported link modes may vary between the devices.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Pawel Chmielewski <pawel.chmielewski@intel.com>
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 14 deletions

diff --git a/include/linux/linkmode.h b/include/linux/linkmode.h
index 15e0e0209da4..cd38f89553e6 100644
--- a/include/linux/linkmode.h
+++ b/include/linux/linkmode.h
@@ -2,6 +2,21 @@
 #define __LINKMODE_H
 
 #include <linux/bitmap.h>
+
+static inline void linkmode_set_bit(int nr, volatile unsigned long *addr)
+{
+	__set_bit(nr, addr);
+}
+
+static inline void linkmode_set_bit_array(const int *array, int array_size,
+					  unsigned long *addr)
+{
+	int i;
+
+	for (i = 0; i < array_size; i++)
+		linkmode_set_bit(array[i], addr);
+}
+
 #include <linux/ethtool.h>
 #include <uapi/linux/ethtool.h>
 
@@ -38,20 +53,6 @@ static inline int linkmode_andnot(unsigned long *dst, const unsigned long *src1,
 	return bitmap_andnot(dst, src1, src2,  __ETHTOOL_LINK_MODE_MASK_NBITS);
 }
 
-static inline void linkmode_set_bit(int nr, volatile unsigned long *addr)
-{
-	__set_bit(nr, addr);
-}
-
-static inline void linkmode_set_bit_array(const int *array, int array_size,
-					  unsigned long *addr)
-{
-	int i;
-
-	for (i = 0; i < array_size; i++)
-		linkmode_set_bit(array[i], addr);
-}
-
 static inline void linkmode_clear_bit(int nr, volatile unsigned long *addr)
 {
 	__clear_bit(nr, addr);