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Date: Wed, 28 Mar 2018 20:11:51 +0100
From: Russell King - ARM Linux <linux@...linux.org.uk>
To: Florian Fainelli <f.fainelli@...il.com>
Cc: netdev@...r.kernel.org,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
Andrew Lunn <andrew@...n.ch>,
"David S. Miller" <davem@...emloft.net>,
open list <linux-kernel@...r.kernel.org>,
Antoine Tenart <antoine.tenart@...tlin.com>,
Yan Markman <ymarkman@...vell.com>,
Stefan Chulski <stefanc@...vell.com>,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
Miquel Raynal <miquel.raynal@...e-electrons.com>,
Marcin Wojtas <mw@...ihalf.com>
Subject: Re: [PATCH net-next 2/2] sfp/phylink: move module EEPROM ethtool
access into netdev core ethtool
On Wed, Mar 28, 2018 at 12:03:39PM -0700, Florian Fainelli wrote:
> From: Russell King <rmk+kernel@...linux.org.uk>
>
> Provide a pointer to the SFP bus in struct net_device, so that the
> ethtool module EEPROM methods can access the SFP directly, rather
> than needing every user to provide a hook for it.
>
> Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
This probably ought to have your sign-off too as you're passing the
patch along rather than me submitting it directly. DCO v1.1 (c)
seems to apply to this situation.
> ---
> drivers/net/ethernet/marvell/mvneta.c | 18 ------------------
> drivers/net/phy/phylink.c | 28 ----------------------------
> drivers/net/phy/sfp-bus.c | 6 ++----
> include/linux/netdevice.h | 3 +++
> include/linux/phylink.h | 3 ---
> net/core/ethtool.c | 7 +++++++
> 6 files changed, 12 insertions(+), 53 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
> index cd09bde55596..25ced96750bf 100644
> --- a/drivers/net/ethernet/marvell/mvneta.c
> +++ b/drivers/net/ethernet/marvell/mvneta.c
> @@ -4075,22 +4075,6 @@ static int mvneta_ethtool_set_wol(struct net_device *dev,
> return ret;
> }
>
> -static int mvneta_ethtool_get_module_info(struct net_device *dev,
> - struct ethtool_modinfo *modinfo)
> -{
> - struct mvneta_port *pp = netdev_priv(dev);
> -
> - return phylink_ethtool_get_module_info(pp->phylink, modinfo);
> -}
> -
> -static int mvneta_ethtool_get_module_eeprom(struct net_device *dev,
> - struct ethtool_eeprom *ee, u8 *buf)
> -{
> - struct mvneta_port *pp = netdev_priv(dev);
> -
> - return phylink_ethtool_get_module_eeprom(pp->phylink, ee, buf);
> -}
> -
> static int mvneta_ethtool_get_eee(struct net_device *dev,
> struct ethtool_eee *eee)
> {
> @@ -4165,8 +4149,6 @@ static const struct ethtool_ops mvneta_eth_tool_ops = {
> .set_link_ksettings = mvneta_ethtool_set_link_ksettings,
> .get_wol = mvneta_ethtool_get_wol,
> .set_wol = mvneta_ethtool_set_wol,
> - .get_module_info = mvneta_ethtool_get_module_info,
> - .get_module_eeprom = mvneta_ethtool_get_module_eeprom,
> .get_eee = mvneta_ethtool_get_eee,
> .set_eee = mvneta_ethtool_set_eee,
> };
> diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
> index 9b1e4721ea3a..c582b2d7546c 100644
> --- a/drivers/net/phy/phylink.c
> +++ b/drivers/net/phy/phylink.c
> @@ -1250,34 +1250,6 @@ int phylink_ethtool_set_pauseparam(struct phylink *pl,
> }
> EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam);
>
> -int phylink_ethtool_get_module_info(struct phylink *pl,
> - struct ethtool_modinfo *modinfo)
> -{
> - int ret = -EOPNOTSUPP;
> -
> - WARN_ON(!lockdep_rtnl_is_held());
> -
> - if (pl->sfp_bus)
> - ret = sfp_get_module_info(pl->sfp_bus, modinfo);
> -
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(phylink_ethtool_get_module_info);
> -
> -int phylink_ethtool_get_module_eeprom(struct phylink *pl,
> - struct ethtool_eeprom *ee, u8 *buf)
> -{
> - int ret = -EOPNOTSUPP;
> -
> - WARN_ON(!lockdep_rtnl_is_held());
> -
> - if (pl->sfp_bus)
> - ret = sfp_get_module_eeprom(pl->sfp_bus, ee, buf);
> -
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(phylink_ethtool_get_module_eeprom);
> -
> /**
> * phylink_ethtool_get_eee_err() - read the energy efficient ethernet error
> * counter
> diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
> index 3d4ff5d0d2a6..0381da78d228 100644
> --- a/drivers/net/phy/sfp-bus.c
> +++ b/drivers/net/phy/sfp-bus.c
> @@ -342,6 +342,7 @@ static int sfp_register_bus(struct sfp_bus *bus)
> }
> if (bus->started)
> bus->socket_ops->start(bus->sfp);
> + bus->netdev->sfp_bus = bus;
> bus->registered = true;
> return 0;
> }
> @@ -356,6 +357,7 @@ static void sfp_unregister_bus(struct sfp_bus *bus)
> if (bus->phydev && ops && ops->disconnect_phy)
> ops->disconnect_phy(bus->upstream);
> }
> + bus->netdev->sfp_bus = NULL;
> bus->registered = false;
> }
>
> @@ -371,8 +373,6 @@ static void sfp_unregister_bus(struct sfp_bus *bus)
> */
> int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo)
> {
> - if (!bus->registered)
> - return -ENOIOCTLCMD;
> return bus->socket_ops->module_info(bus->sfp, modinfo);
> }
> EXPORT_SYMBOL_GPL(sfp_get_module_info);
> @@ -391,8 +391,6 @@ EXPORT_SYMBOL_GPL(sfp_get_module_info);
> int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee,
> u8 *data)
> {
> - if (!bus->registered)
> - return -ENOIOCTLCMD;
> return bus->socket_ops->module_eeprom(bus->sfp, ee, data);
> }
> EXPORT_SYMBOL_GPL(sfp_get_module_eeprom);
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index 2a2d9cf50aa2..53f0cd64676b 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -58,6 +58,7 @@ struct device;
> struct phy_device;
> struct dsa_port;
>
> +struct sfp_bus;
> /* 802.11 specific */
> struct wireless_dev;
> /* 802.15.4 specific */
> @@ -1662,6 +1663,7 @@ enum netdev_priv_flags {
> * @priomap: XXX: need comments on this one
> * @phydev: Physical device may attach itself
> * for hardware timestamping
> + * @sfp_bus: attached &struct sfp_bus structure.
> *
> * @qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock
> * @qdisc_running_key: lockdep class annotating Qdisc->running seqcount
> @@ -1945,6 +1947,7 @@ struct net_device {
> struct netprio_map __rcu *priomap;
> #endif
> struct phy_device *phydev;
> + struct sfp_bus *sfp_bus;
> struct lock_class_key *qdisc_tx_busylock;
> struct lock_class_key *qdisc_running_key;
> bool proto_down;
> diff --git a/include/linux/phylink.h b/include/linux/phylink.h
> index f29a40947de9..67cd518d66d1 100644
> --- a/include/linux/phylink.h
> +++ b/include/linux/phylink.h
> @@ -217,9 +217,6 @@ void phylink_ethtool_get_pauseparam(struct phylink *,
> struct ethtool_pauseparam *);
> int phylink_ethtool_set_pauseparam(struct phylink *,
> struct ethtool_pauseparam *);
> -int phylink_ethtool_get_module_info(struct phylink *, struct ethtool_modinfo *);
> -int phylink_ethtool_get_module_eeprom(struct phylink *,
> - struct ethtool_eeprom *, u8 *);
> int phylink_get_eee_err(struct phylink *);
> int phylink_ethtool_get_eee(struct phylink *, struct ethtool_eee *);
> int phylink_ethtool_set_eee(struct phylink *, struct ethtool_eee *);
> diff --git a/net/core/ethtool.c b/net/core/ethtool.c
> index bb6e498c6e3d..eb55252ca1fb 100644
> --- a/net/core/ethtool.c
> +++ b/net/core/ethtool.c
> @@ -22,6 +22,7 @@
> #include <linux/bitops.h>
> #include <linux/uaccess.h>
> #include <linux/vmalloc.h>
> +#include <linux/sfp.h>
> #include <linux/slab.h>
> #include <linux/rtnetlink.h>
> #include <linux/sched/signal.h>
> @@ -2245,6 +2246,9 @@ static int __ethtool_get_module_info(struct net_device *dev,
> const struct ethtool_ops *ops = dev->ethtool_ops;
> struct phy_device *phydev = dev->phydev;
>
> + if (dev->sfp_bus)
> + return sfp_get_module_info(dev->sfp_bus, modinfo);
> +
> if (phydev && phydev->drv && phydev->drv->module_info)
> return phydev->drv->module_info(phydev, modinfo);
>
> @@ -2279,6 +2283,9 @@ static int __ethtool_get_module_eeprom(struct net_device *dev,
> const struct ethtool_ops *ops = dev->ethtool_ops;
> struct phy_device *phydev = dev->phydev;
>
> + if (dev->sfp_bus)
> + return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
> +
> if (phydev && phydev->drv && phydev->drv->module_eeprom)
> return phydev->drv->module_eeprom(phydev, ee, data);
>
> --
> 2.14.1
>
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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