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55 lines
1.9 KiB
Diff
55 lines
1.9 KiB
Diff
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From 9723a77318b7c0cfd06ea207e52a042f8c815318 Mon Sep 17 00:00:00 2001
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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
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Date: Tue, 10 Dec 2024 14:18:16 +0000
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Subject: [PATCH] net: dsa: add hook to determine whether EEE is supported
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Add a hook to determine whether the switch supports EEE. This will
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return false if the switch does not, or true if it does. If the
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method is not implemented, we assume (currently) that the switch
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supports EEE.
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Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
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Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
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Link: https://patch.msgid.link/E1tL144-006cZD-El@rmk-PC.armlinux.org.uk
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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include/net/dsa.h | 1 +
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net/dsa/user.c | 8 ++++++++
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2 files changed, 9 insertions(+)
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--- a/include/net/dsa.h
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+++ b/include/net/dsa.h
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@@ -1003,6 +1003,7 @@ struct dsa_switch_ops {
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/*
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* Port's MAC EEE settings
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*/
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+ bool (*support_eee)(struct dsa_switch *ds, int port);
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int (*set_mac_eee)(struct dsa_switch *ds, int port,
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struct ethtool_keee *e);
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int (*get_mac_eee)(struct dsa_switch *ds, int port,
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--- a/net/dsa/user.c
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+++ b/net/dsa/user.c
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@@ -1231,6 +1231,10 @@ static int dsa_user_set_eee(struct net_d
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struct dsa_switch *ds = dp->ds;
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int ret;
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+ /* Check whether the switch supports EEE */
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+ if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index))
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+ return -EOPNOTSUPP;
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+
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/* Port's PHY and MAC both need to be EEE capable */
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if (!dev->phydev || !dp->pl)
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return -ENODEV;
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@@ -1251,6 +1255,10 @@ static int dsa_user_get_eee(struct net_d
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struct dsa_switch *ds = dp->ds;
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int ret;
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+ /* Check whether the switch supports EEE */
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+ if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index))
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+ return -EOPNOTSUPP;
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+
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/* Port's PHY and MAC both need to be EEE capable */
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if (!dev->phydev || !dp->pl)
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return -ENODEV;
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