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Date:   Fri, 18 Sep 2020 14:14:51 -0500
From:   Dan Murphy <dmurphy@...com>
To:     <davem@...emloft.net>, <andrew@...n.ch>, <f.fainelli@...il.com>,
        <hkallweit1@...il.com>
CC:     <mkubecek@...e.cz>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Dan Murphy <dmurphy@...com>
Subject: [PATCH net-next v2 1/3] ethtool: Add 100base-FX link mode entries

Add entries for the 100base-FX full and half duplex supported modes.

$ ethtool eth0
        Supported ports: [ FIBRE ]
        Supported link modes:  100baseFX/Half 100baseFX/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: No
        Supported FEC modes: Not reported
        Advertised link modes: 100baseFX/Half 100baseFX/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Advertised FEC modes: Not reported
        Speed: 100Mb/s
        Duplex: Full
        Auto-negotiation: off
        Port: MII
        PHYAD: 1
        Transceiver: external
        Supports Wake-on: gs
        Wake-on: d
        SecureOn password: 00:00:00:00:00:00
        Current message level: 0x00000000 (0)

        Link detected: yes

Signed-off-by: Dan Murphy <dmurphy@...com>
---

v2 - Updated ethtool example in the commit message no other functional changes

 drivers/net/phy/phy-core.c   | 4 +++-
 include/uapi/linux/ethtool.h | 2 ++
 net/ethtool/common.c         | 2 ++
 net/ethtool/linkmodes.c      | 2 ++
 4 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c
index ff8e14b01eeb..de5b869139d7 100644
--- a/drivers/net/phy/phy-core.c
+++ b/drivers/net/phy/phy-core.c
@@ -8,7 +8,7 @@
 
 const char *phy_speed_to_str(int speed)
 {
-	BUILD_BUG_ON_MSG(__ETHTOOL_LINK_MODE_MASK_NBITS != 90,
+	BUILD_BUG_ON_MSG(__ETHTOOL_LINK_MODE_MASK_NBITS != 92,
 		"Enum ethtool_link_mode_bit_indices and phylib are out of sync. "
 		"If a speed or mode has been added please update phy_speed_to_str "
 		"and the PHY settings array.\n");
@@ -160,6 +160,8 @@ static const struct phy_setting settings[] = {
 	PHY_SETTING(    100, FULL,    100baseT_Full		),
 	PHY_SETTING(    100, FULL,    100baseT1_Full		),
 	PHY_SETTING(    100, HALF,    100baseT_Half		),
+	PHY_SETTING(    100, HALF,    100baseFX_Half		),
+	PHY_SETTING(    100, FULL,    100baseFX_Full		),
 	/* 10M */
 	PHY_SETTING(     10, FULL,     10baseT_Full		),
 	PHY_SETTING(     10, HALF,     10baseT_Half		),
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index b4f2d134e713..9ca87bc73c44 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -1617,6 +1617,8 @@ enum ethtool_link_mode_bit_indices {
 	ETHTOOL_LINK_MODE_400000baseLR4_ER4_FR4_Full_BIT = 87,
 	ETHTOOL_LINK_MODE_400000baseDR4_Full_BIT	 = 88,
 	ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT	 = 89,
+	ETHTOOL_LINK_MODE_100baseFX_Half_BIT		 = 90,
+	ETHTOOL_LINK_MODE_100baseFX_Full_BIT		 = 91,
 	/* must be last entry */
 	__ETHTOOL_LINK_MODE_MASK_NBITS
 };
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index ed19573fccd7..24036e3055a1 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -192,6 +192,8 @@ const char link_mode_names[][ETH_GSTRING_LEN] = {
 	__DEFINE_LINK_MODE_NAME(400000, LR4_ER4_FR4, Full),
 	__DEFINE_LINK_MODE_NAME(400000, DR4, Full),
 	__DEFINE_LINK_MODE_NAME(400000, CR4, Full),
+	__DEFINE_LINK_MODE_NAME(100, FX, Half),
+	__DEFINE_LINK_MODE_NAME(100, FX, Full),
 };
 static_assert(ARRAY_SIZE(link_mode_names) == __ETHTOOL_LINK_MODE_MASK_NBITS);
 
diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c
index 7044a2853886..29dcd675b65a 100644
--- a/net/ethtool/linkmodes.c
+++ b/net/ethtool/linkmodes.c
@@ -272,6 +272,8 @@ static const struct link_mode_info link_mode_params[] = {
 	__DEFINE_LINK_MODE_PARAMS(400000, LR4_ER4_FR4, Full),
 	__DEFINE_LINK_MODE_PARAMS(400000, DR4, Full),
 	__DEFINE_LINK_MODE_PARAMS(400000, CR4, Full),
+	__DEFINE_LINK_MODE_PARAMS(100, FX, Half),
+	__DEFINE_LINK_MODE_PARAMS(100, FX, Full),
 };
 
 static const struct nla_policy
-- 
2.28.0

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