target/linux/mvebu/patches-4.4/136-phylink-add-ethtool-nway_reset-support.patch

   1 From d6bd25b692378ec17bdb1023d398c03c45829947 Mon Sep 17 00:00:00 2001
   2 From: Russell King <rmk+kernel@arm.linux.org.uk>
   3 Date: Thu, 1 Oct 2015 20:27:19 +0100
   4 Subject: [PATCH 724/744] phylink: add ethtool nway_reset support
   5
   6 Add ethtool nway_reset support to phylink, to allow userspace to
   7 request a re-negotiation of the link.
   8
   9 Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
  10 Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
  11 ---
  12  drivers/net/phy/phylink.c | 14 ++++++++++++++
  13  include/linux/phylink.h   |  1 +
  14  2 files changed, 15 insertions(+)
  15
  16 --- a/drivers/net/phy/phylink.c
  17 +++ b/drivers/net/phy/phylink.c
  18 @@ -687,6 +687,20 @@ int phylink_ethtool_set_settings(struct
  19  }
  20  EXPORT_SYMBOL_GPL(phylink_ethtool_set_settings);
  21
  22 +int phylink_ethtool_nway_reset(struct phylink *pl)
  23 +{
  24 +       int ret = 0;
  25 +
  26 +       mutex_lock(&pl->config_mutex);
  27 +       if (pl->phydev)
  28 +               ret = genphy_restart_aneg(pl->phydev);
  29 +       phylink_mac_an_restart(pl);
  30 +       mutex_unlock(&pl->config_mutex);
  31 +
  32 +       return ret;
  33 +}
  34 +EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset);
  35 +
  36  /* This emulates MII registers for a fixed-mode phy operating as per the
  37   * passed in state. "aneg" defines if we report negotiation is possible.
  38   *
  39 --- a/include/linux/phylink.h
  40 +++ b/include/linux/phylink.h
  41 @@ -65,6 +65,7 @@ void phylink_stop(struct phylink *);
  42
  43  int phylink_ethtool_get_settings(struct phylink *, struct ethtool_cmd *);
  44  int phylink_ethtool_set_settings(struct phylink *, struct ethtool_cmd *);
  45 +int phylink_ethtool_nway_reset(struct phylink *);
  46  int phylink_mii_ioctl(struct phylink *, struct ifreq *, int);
  47
  48  void phylink_set_link_port(struct phylink *pl, u32 support, u8 port);