git.openwrt.org Git - openwrt/staging/thess.git/blob

   1 From 9723a77318b7c0cfd06ea207e52a042f8c815318 Mon Sep 17 00:00:00 2001
   2 From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
   3 Date: Tue, 10 Dec 2024 14:18:16 +0000
   4 Subject: [PATCH] net: dsa: add hook to determine whether EEE is supported
   5
   6 Add a hook to determine whether the switch supports EEE. This will
   7 return false if the switch does not, or true if it does. If the
   8 method is not implemented, we assume (currently) that the switch
   9 supports EEE.
  10
  11 Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
  12 Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
  13 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  14 Link: https://patch.msgid.link/E1tL144-006cZD-El@rmk-PC.armlinux.org.uk
  15 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  16 ---
  17  include/net/dsa.h | 1 +
  18  net/dsa/user.c    | 8 ++++++++
  19  2 files changed, 9 insertions(+)
  20
  21 --- a/include/net/dsa.h
  22 +++ b/include/net/dsa.h
  23 @@ -1003,6 +1003,7 @@ struct dsa_switch_ops {
  24         /*
  25          * Port's MAC EEE settings
  26          */
  27 +       bool    (*support_eee)(struct dsa_switch *ds, int port);
  28         int     (*set_mac_eee)(struct dsa_switch *ds, int port,
  29                                struct ethtool_keee *e);
  30         int     (*get_mac_eee)(struct dsa_switch *ds, int port,
  31 --- a/net/dsa/user.c
  32 +++ b/net/dsa/user.c
  33 @@ -1231,6 +1231,10 @@ static int dsa_user_set_eee(struct net_d
  34         struct dsa_switch *ds = dp->ds;
  35         int ret;
  36
  37 +       /* Check whether the switch supports EEE */
  38 +       if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index))
  39 +               return -EOPNOTSUPP;
  40 +
  41         /* Port's PHY and MAC both need to be EEE capable */
  42         if (!dev->phydev || !dp->pl)
  43                 return -ENODEV;
  44 @@ -1251,6 +1255,10 @@ static int dsa_user_get_eee(struct net_d
  45         struct dsa_switch *ds = dp->ds;
  46         int ret;
  47
  48 +       /* Check whether the switch supports EEE */
  49 +       if (ds->ops->support_eee && !ds->ops->support_eee(ds, dp->index))
  50 +               return -EOPNOTSUPP;
  51 +
  52         /* Port's PHY and MAC both need to be EEE capable */
  53         if (!dev->phydev || !dp->pl)
  54                 return -ENODEV;