linux-kernel - [PATCH net-next 5/5] net: bcmgenet: Interrogate PHY for WAKE

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Message-Id: <20231025173300.1776832-6-florian.fainelli@broadcom.com>
Date:   Wed, 25 Oct 2023 10:33:00 -0700
From:   Florian Fainelli <florian.fainelli@...adcom.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <florian.fainelli@...adcom.com>,
        Doug Berger <opendmb@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.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>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Tariq Toukan <tariqt@...dia.com>,
        Gal Pressman <gal@...dia.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Daniil Tatianin <d-tatianin@...dex-team.ru>,
        Simon Horman <horms@...nel.org>,
        Justin Chen <justin.chen@...adcom.com>,
        Ratheesh Kannoth <rkannoth@...vell.com>,
        Joe Damato <jdamato@...tly.com>,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>,
        Jiri Pirko <jiri@...nulli.us>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next 5/5] net: bcmgenet: Interrogate PHY for WAKE_FILTER programming

Determine whether the PHY can support waking up from the user programmed
network filter, and if it can utilize it.

Signed-off-by: Florian Fainelli <florian.fainelli@...adcom.com>>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 16 ++++++++++++++++
 drivers/net/phy/bcm-phy-lib.c                  | 12 +++++++++++-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 9282403d1bf6..9d01c13552eb 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1524,6 +1524,14 @@ static int bcmgenet_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 	struct bcmgenet_priv *priv = netdev_priv(dev);
 	int err = 0;
 
+	if (dev->phydev) {
+		err = phy_ethtool_set_rxnfc(dev->phydev, cmd);
+		if (err != -EOPNOTSUPP)
+			return err;
+
+		err = 0;
+	}
+
 	switch (cmd->cmd) {
 	case ETHTOOL_SRXCLSRLINS:
 		err = bcmgenet_insert_flow(dev, cmd);
@@ -1579,6 +1587,14 @@ static int bcmgenet_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 	int err = 0;
 	int i = 0;
 
+	if (dev->phydev) {
+		err = phy_ethtool_get_rxnfc(dev->phydev, cmd, rule_locs);
+		if (err != -EOPNOTSUPP)
+			return err;
+
+		err = 0;
+	}
+
 	switch (cmd->cmd) {
 	case ETHTOOL_GRXRINGS:
 		cmd->data = priv->hw_params->rx_queues ?: 1;
diff --git a/drivers/net/phy/bcm-phy-lib.c b/drivers/net/phy/bcm-phy-lib.c
index cfbeedc5ee81..569aeab68f97 100644
--- a/drivers/net/phy/bcm-phy-lib.c
+++ b/drivers/net/phy/bcm-phy-lib.c
@@ -888,6 +888,15 @@ int bcm_phy_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
 	if (wol->wolopts & WAKE_FILTER)
 		goto program_ctl;
 
+	/* Enabling options other than WAKE_FILTER nullifies the one and only
+	 * network rule that we support.
+	 */
+	if (!(wol->wolopts & WAKE_FILTER)) {
+		ret = bcm_phy_write_exp(phydev, BCM54XX_WOL_SEC_KEY_8B, 0);
+		if (ret < 0)
+			return ret;
+	}
+
 	/* When using WAKE_MAGIC, we program the magic pattern filter to match
 	 * the device's MAC address and we accept any MAC DA in the Ethernet
 	 * frame.
@@ -1175,9 +1184,10 @@ static int bcm_phy_set_rule(struct phy_device *phydev,
 
 	da = nfc->fs.m_u.ether_spec.h_dest;
 	for (i = 0; i < ETH_ALEN / 2; i++) {
+		u16 mask = da[i * 2] << 8 | da[i * 2 + 1];
 		ret = bcm_phy_write_exp(phydev,
 					BCM54XX_WOL_MASK(2 - i),
-					da[i * 2] << 8 | da[i * 2 + 1]);
+					~mask);
 		if (ret < 0)
 			return ret;
 	}
-- 
2.34.1


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