netdev - [PATCH v2 net-next] net: phy: improve definition of __ETHTOOL_LINK_MODE_MASK

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Date:   Fri, 22 Feb 2019 19:25:59 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH v2 net-next] net: phy: improve definition of
 __ETHTOOL_LINK_MODE_MASK_NBITS

The way to define __ETHTOOL_LINK_MODE_MASK_NBITS seems to be overly
complicated, go with a standard approach instead.
Whilst we're at it, move the comment to the right place.

v2:
- rebased

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 include/linux/ethtool.h      |  4 ----
 include/uapi/linux/ethtool.h | 17 +++++++++--------
 2 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 19a8de532..e6ebc9761 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -98,10 +98,6 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings)
 	return index % n_rx_rings;
 }
 
-/* number of link mode bits/ulongs handled internally by kernel */
-#define __ETHTOOL_LINK_MODE_MASK_NBITS			\
-	(__ETHTOOL_LINK_MODE_LAST + 1)
-
 /* declare a link mode bitmap */
 #define __ETHTOOL_DECLARE_LINK_MODE_MASK(name)		\
 	DECLARE_BITMAP(name, __ETHTOOL_LINK_MODE_MASK_NBITS)
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 378c52308..3652b239d 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -1432,6 +1432,13 @@ enum ethtool_link_mode_bit_indices {
 	ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT	= 29,
 	ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT	= 30,
 	ETHTOOL_LINK_MODE_25000baseCR_Full_BIT	= 31,
+
+	/* Last allowed bit for __ETHTOOL_LINK_MODE_LEGACY_MASK is bit
+	 * 31. Please do NOT define any SUPPORTED_* or ADVERTISED_*
+	 * macro for bits > 31. The only way to use indices > 31 is to
+	 * use the new ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API.
+	 */
+
 	ETHTOOL_LINK_MODE_25000baseKR_Full_BIT	= 32,
 	ETHTOOL_LINK_MODE_25000baseSR_Full_BIT	= 33,
 	ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT	= 34,
@@ -1469,14 +1476,8 @@ enum ethtool_link_mode_bit_indices {
 	ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT	 = 65,
 	ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT	 = 66,
 
-	/* Last allowed bit for __ETHTOOL_LINK_MODE_LEGACY_MASK is bit
-	 * 31. Please do NOT define any SUPPORTED_* or ADVERTISED_*
-	 * macro for bits > 31. The only way to use indices > 31 is to
-	 * use the new ETHTOOL_GLINKSETTINGS/ETHTOOL_SLINKSETTINGS API.
-	 */
-
-	__ETHTOOL_LINK_MODE_LAST
-	  = ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT,
+	/* must be last entry */
+	__ETHTOOL_LINK_MODE_MASK_NBITS
 };
 
 #define __ETHTOOL_LINK_MODE_LEGACY_MASK(base_name)	\
-- 
2.20.1