linux-kernel - [PATCH net-next v7 1/8] net: add helpers for EEE configuration

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Date: Thu, 29 Feb 2024 15:07:53 +0100
From: Oleksij Rempel <o.rempel@...gutronix.de>
To: Wei Fang <wei.fang@....com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>
Cc: Russell King <rmk+kernel@...linux.org.uk>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Oleksij Rempel <o.rempel@...gutronix.de>,
	kernel@...gutronix.de,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	NXP Linux Team <linux-imx@....com>
Subject: [PATCH net-next v7 1/8] net: add helpers for EEE configuration

From: Russell King <rmk+kernel@...linux.org.uk>

Add helpers that phylib and phylink can use to manage EEE configuration
and determine whether the MAC should be permitted to use LPI based on
that configuration.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Andrew Lunn <andrew@...n.ch>
Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 include/net/eee.h | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 include/net/eee.h

diff --git a/include/net/eee.h b/include/net/eee.h
new file mode 100644
index 0000000000000..1232658b32f40
--- /dev/null
+++ b/include/net/eee.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _EEE_H
+#define _EEE_H
+
+#include <linux/types.h>
+
+struct eee_config {
+	u32 tx_lpi_timer;
+	bool tx_lpi_enabled;
+	bool eee_enabled;
+};
+
+static inline bool eeecfg_mac_can_tx_lpi(const struct eee_config *eeecfg)
+{
+	/* eee_enabled is the master on/off */
+	if (!eeecfg->eee_enabled || !eeecfg->tx_lpi_enabled)
+		return false;
+
+	return true;
+}
+
+static inline void eeecfg_to_eee(const struct eee_config *eeecfg,
+			  struct ethtool_keee *eee)
+{
+	eee->tx_lpi_timer = eeecfg->tx_lpi_timer;
+	eee->tx_lpi_enabled = eeecfg->tx_lpi_enabled;
+	eee->eee_enabled = eeecfg->eee_enabled;
+}
+
+static inline void eee_to_eeecfg(const struct ethtool_keee *eee,
+				 struct eee_config *eeecfg)
+{
+	eeecfg->tx_lpi_timer = eee->tx_lpi_timer;
+	eeecfg->tx_lpi_enabled = eee->tx_lpi_enabled;
+	eeecfg->eee_enabled = eee->eee_enabled;
+}
+
+#endif
-- 
2.39.2