netdev - [PATCH net-next v3 2/4] net: ethtool: Add support for 80Gbps speed

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Message-ID: <20260115115646.328898-3-mika.westerberg@linux.intel.com>
Date: Thu, 15 Jan 2026 12:56:44 +0100
From: Mika Westerberg <mika.westerberg@...ux.intel.com>
To: netdev@...r.kernel.org
Cc: Ian MacDonald <ian@...statz.com>,
	Jay Vosburgh <jv@...sburgh.net>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Yehezkel Bernat <YehezkelShB@...il.com>,
	Simon Horman <horms@...nel.org>,
	Salvatore Bonaccorso <carnil@...ian.org>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: [PATCH net-next v3 2/4] net: ethtool: Add support for 80Gbps speed

USB4 v2 link used in peer-to-peer networking is symmetric 80Gbps so in
order to support reading this link speed, add support for it to ethtool.

Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
---
I had to update include/linux/phylink.h as well, I hope it's fine to just
put it into middle and changing all the following bits accordingly. These
does not seem to be user-facing.

 drivers/net/phy/phy-caps.h   | 1 +
 drivers/net/phy/phy-core.c   | 2 ++
 drivers/net/phy/phy_caps.c   | 2 ++
 drivers/net/phy/phylink.c    | 1 +
 include/linux/phylink.h      | 7 ++++---
 include/uapi/linux/ethtool.h | 1 +
 6 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/phy-caps.h b/drivers/net/phy/phy-caps.h
index 4951a39f3828..fdc489fe3a2a 100644
--- a/drivers/net/phy/phy-caps.h
+++ b/drivers/net/phy/phy-caps.h
@@ -25,6 +25,7 @@ enum {
 	LINK_CAPA_40000FD,
 	LINK_CAPA_50000FD,
 	LINK_CAPA_56000FD,
+	LINK_CAPA_80000FD,
 	LINK_CAPA_100000FD,
 	LINK_CAPA_200000FD,
 	LINK_CAPA_400000FD,
diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c
index 277c034bc32f..4fd264ece09e 100644
--- a/drivers/net/phy/phy-core.c
+++ b/drivers/net/phy/phy-core.c
@@ -47,6 +47,8 @@ const char *phy_speed_to_str(int speed)
 		return "50Gbps";
 	case SPEED_56000:
 		return "56Gbps";
+	case SPEED_80000:
+		return "80Gbps";
 	case SPEED_100000:
 		return "100Gbps";
 	case SPEED_200000:
diff --git a/drivers/net/phy/phy_caps.c b/drivers/net/phy/phy_caps.c
index 3a05982b39bf..3c53d3a746f2 100644
--- a/drivers/net/phy/phy_caps.c
+++ b/drivers/net/phy/phy_caps.c
@@ -21,6 +21,7 @@ static struct link_capabilities link_caps[__LINK_CAPA_MAX] __ro_after_init = {
 	{ SPEED_40000, DUPLEX_FULL, {0} }, /* LINK_CAPA_40000FD */
 	{ SPEED_50000, DUPLEX_FULL, {0} }, /* LINK_CAPA_50000FD */
 	{ SPEED_56000, DUPLEX_FULL, {0} }, /* LINK_CAPA_56000FD */
+	{ SPEED_80000, DUPLEX_FULL, {0} }, /* LINK_CAPA_80000FD */
 	{ SPEED_100000, DUPLEX_FULL, {0} }, /* LINK_CAPA_100000FD */
 	{ SPEED_200000, DUPLEX_FULL, {0} }, /* LINK_CAPA_200000FD */
 	{ SPEED_400000, DUPLEX_FULL, {0} }, /* LINK_CAPA_400000FD */
@@ -49,6 +50,7 @@ static int speed_duplex_to_capa(int speed, unsigned int duplex)
 	case SPEED_40000: return LINK_CAPA_40000FD;
 	case SPEED_50000: return LINK_CAPA_50000FD;
 	case SPEED_56000: return LINK_CAPA_56000FD;
+	case SPEED_80000: return LINK_CAPA_80000FD;
 	case SPEED_100000: return LINK_CAPA_100000FD;
 	case SPEED_200000: return LINK_CAPA_200000FD;
 	case SPEED_400000: return LINK_CAPA_400000FD;
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 43d8380aaefb..c8fd6b91cdd4 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -311,6 +311,7 @@ static struct {
 	{ MAC_400000FD, SPEED_400000, DUPLEX_FULL, BIT(LINK_CAPA_400000FD) },
 	{ MAC_200000FD, SPEED_200000, DUPLEX_FULL, BIT(LINK_CAPA_200000FD) },
 	{ MAC_100000FD, SPEED_100000, DUPLEX_FULL, BIT(LINK_CAPA_100000FD) },
+	{ MAC_80000FD,  SPEED_80000,  DUPLEX_FULL, BIT(LINK_CAPA_80000FD) },
 	{ MAC_56000FD,  SPEED_56000,  DUPLEX_FULL, BIT(LINK_CAPA_56000FD) },
 	{ MAC_50000FD,  SPEED_50000,  DUPLEX_FULL, BIT(LINK_CAPA_50000FD) },
 	{ MAC_40000FD,  SPEED_40000,  DUPLEX_FULL, BIT(LINK_CAPA_40000FD) },
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 38363e566ac3..20996f5778d1 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -90,9 +90,10 @@ enum {
 	MAC_40000FD	= BIT(13),
 	MAC_50000FD	= BIT(14),
 	MAC_56000FD	= BIT(15),
-	MAC_100000FD	= BIT(16),
-	MAC_200000FD	= BIT(17),
-	MAC_400000FD	= BIT(18),
+	MAC_80000FD	= BIT(16),
+	MAC_100000FD	= BIT(17),
+	MAC_200000FD	= BIT(18),
+	MAC_400000FD	= BIT(19),
 };
 
 static inline bool phylink_autoneg_inband(unsigned int mode)
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index eb7ff2602fbb..181243a2d700 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -2190,6 +2190,7 @@ enum ethtool_link_mode_bit_indices {
 #define SPEED_40000		40000
 #define SPEED_50000		50000
 #define SPEED_56000		56000
+#define SPEED_80000		80000
 #define SPEED_100000		100000
 #define SPEED_200000		200000
 #define SPEED_400000		400000
-- 
2.50.1