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net: dsa: add hook to determine whether EEE is supported

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commit 9723a77318 upstream.

Add a hook to determine whether the switch supports EEE. This will
return false if the switch does not, or true if it does. If the
method is not implemented, we assume (currently) that the switch
supports EEE.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/E1tL144-006cZD-El@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Russell King (Oracle) 2024-12-10 14:18:16 +00:00 committed by Greg Kroah-Hartman
parent 6482c3dccb
commit f7976772b1
2 changed files with 9 additions and 0 deletions
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1
include/net/dsa.h
View File

@ -1003,6 +1003,7 @@ struct dsa_switch_ops {
/* /*
* Port's MAC EEE settings * Port's MAC EEE settings
*/ */
bool (*support_eee)(struct dsa_switch *ds, int port);
int (*set_mac_eee)(struct dsa_switch *ds, int port, int (*set_mac_eee)(struct dsa_switch *ds, int port,
struct ethtool_keee *e); struct ethtool_keee *e);
int (*get_mac_eee)(struct dsa_switch *ds, int port, int (*get_mac_eee)(struct dsa_switch *ds, int port,

8
net/dsa/user.c
View File

@ -1231,6 +1231,10 @@ static int dsa_user_set_eee(struct net_device *dev, struct ethtool_keee *e)
struct dsa_switch *ds = dp->ds; struct dsa_switch *ds = dp->ds;
int ret; int ret;
/* Check whether the switch supports EEE */
if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index))
return -EOPNOTSUPP;
/* Port's PHY and MAC both need to be EEE capable */ /* Port's PHY and MAC both need to be EEE capable */
if (!dev->phydev || !dp->pl) if (!dev->phydev || !dp->pl)
return -ENODEV; return -ENODEV;
@ -1251,6 +1255,10 @@ static int dsa_user_get_eee(struct net_device *dev, struct ethtool_keee *e)
struct dsa_switch *ds = dp->ds; struct dsa_switch *ds = dp->ds;
int ret; int ret;
/* Check whether the switch supports EEE */
if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index))
return -EOPNOTSUPP;
/* Port's PHY and MAC both need to be EEE capable */ /* Port's PHY and MAC both need to be EEE capable */
if (!dev->phydev || !dp->pl) if (!dev->phydev || !dp->pl)
return -ENODEV; return -ENODEV;