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Date: Wed, 27 Sep 2006 15:33:40 -0400
From: dhollis@...ehollis.com
To: Arnd Bergmann <arnd@...db.de>
Cc: David Brownell <david-b@...bell.net>,
linux-usb-devel@...ts.sourceforge.net, support@...chip.com,
dbrownell@...rs.sourceforge.net, linux-kernel@...r.kernel.org,
Michael Helmling <supermihi@....de>
Subject: Re: [PATCH 3/3] usbnet: improve generic ethtool support
Quoting Arnd Bergmann <arnd@...db.de>:
> This adds generic support for the ethtool commands get_settings,
> set_settings, get_link and nway_reset to usbnet. These are now
> implemented using mii functions when a low-level driver supports
> mdio_read/mdio_write and does not override the usbnet ethtool
> commands with its own.
>
> Currently, this applies to the asix and the mcs7830 drivers.
> I have tested it on mcs7830.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
>
Acked-by: David Hollis <dhollis@...ehollis.com>
>
> Index: linux-cg/drivers/usb/net/asix.c
> ===================================================================
> --- linux-cg.orig/drivers/usb/net/asix.c 2006-09-17 00:05:53.000000000 +0200
> +++ linux-cg/drivers/usb/net/asix.c 2006-09-17 00:09:43.000000000 +0200
> @@ -458,20 +458,6 @@
> info->eedump_len = 0x3e;
> }
>
> -static int asix_get_settings(struct net_device *net, struct
> ethtool_cmd *cmd)
> -{
> - struct usbnet *dev = netdev_priv(net);
> -
> - return mii_ethtool_gset(&dev->mii,cmd);
> -}
> -
> -static int asix_set_settings(struct net_device *net, struct
> ethtool_cmd *cmd)
> -{
> - struct usbnet *dev = netdev_priv(net);
> -
> - return mii_ethtool_sset(&dev->mii,cmd);
> -}
> -
> /* We need to override some ethtool_ops so we require our
> own structure so we don't interfere with other usbnet
> devices that may be connected at the same time. */
> @@ -484,8 +470,9 @@
> .set_wol = asix_set_wol,
> .get_eeprom_len = asix_get_eeprom_len,
> .get_eeprom = asix_get_eeprom,
> - .get_settings = asix_get_settings,
> - .set_settings = asix_set_settings,
> + .get_settings = usbnet_get_settings,
> + .set_settings = usbnet_set_settings,
> + .nway_reset = usbnet_nway_reset,
> };
>
> static int asix_ioctl (struct net_device *net, struct ifreq *rq, int cmd)
> @@ -564,8 +551,9 @@
> .set_wol = asix_set_wol,
> .get_eeprom_len = asix_get_eeprom_len,
> .get_eeprom = asix_get_eeprom,
> - .get_settings = asix_get_settings,
> - .set_settings = asix_set_settings,
> + .get_settings = usbnet_get_settings,
> + .set_settings = usbnet_set_settings,
> + .nway_reset = usbnet_nway_reset,
> };
>
> static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
> Index: linux-cg/drivers/usb/net/mcs7830.c
> ===================================================================
> --- linux-cg.orig/drivers/usb/net/mcs7830.c 2006-09-17
> 00:05:53.000000000 +0200
> +++ linux-cg/drivers/usb/net/mcs7830.c 2006-09-17 00:06:21.000000000 +0200
> @@ -430,8 +430,12 @@
> .get_regs = mcs7830_get_regs,
>
> /* common usbnet calls */
> + .get_link = usbnet_get_link,
> .get_msglevel = usbnet_get_msglevel,
> .set_msglevel = usbnet_set_msglevel,
> + .get_settings = usbnet_get_settings,
> + .set_settings = usbnet_set_settings,
> + .nway_reset = usbnet_nway_reset,
> };
>
> static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
> Index: linux-cg/drivers/usb/net/usbnet.c
> ===================================================================
> --- linux-cg.orig/drivers/usb/net/usbnet.c 2006-09-17
> 00:05:53.000000000 +0200
> +++ linux-cg/drivers/usb/net/usbnet.c 2006-09-17 00:07:45.000000000 +0200
> @@ -645,6 +645,29 @@
> * they'll probably want to use this base set.
> */
>
> +int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd)
> +{
> + struct usbnet *dev = netdev_priv(net);
> +
> + if (!dev->mii.mdio_read)
> + return -EOPNOTSUPP;
> +
> + return mii_ethtool_gset(&dev->mii, cmd);
> +}
> +EXPORT_SYMBOL_GPL(usbnet_get_settings);
> +
> +int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd)
> +{
> + struct usbnet *dev = netdev_priv(net);
> +
> + if (!dev->mii.mdio_write)
> + return -EOPNOTSUPP;
> +
> + return mii_ethtool_sset(&dev->mii, cmd);
> +}
> +EXPORT_SYMBOL_GPL(usbnet_set_settings);
> +
> +
> void usbnet_get_drvinfo (struct net_device *net, struct
> ethtool_drvinfo *info)
> {
> struct usbnet *dev = netdev_priv(net);
> @@ -658,7 +681,7 @@
> }
> EXPORT_SYMBOL_GPL(usbnet_get_drvinfo);
>
> -static u32 usbnet_get_link (struct net_device *net)
> +u32 usbnet_get_link (struct net_device *net)
> {
> struct usbnet *dev = netdev_priv(net);
>
> @@ -666,9 +689,14 @@
> if (dev->driver_info->check_connect)
> return dev->driver_info->check_connect (dev) == 0;
>
> + /* if the device has mii operations, use those */
> + if (dev->mii.mdio_read)
> + return mii_link_ok(&dev->mii);
> +
> /* Otherwise, say we're up (to avoid breaking scripts) */
> return 1;
> }
> +EXPORT_SYMBOL_GPL(usbnet_get_link);
>
> u32 usbnet_get_msglevel (struct net_device *net)
> {
> @@ -686,10 +714,24 @@
> }
> EXPORT_SYMBOL_GPL(usbnet_set_msglevel);
>
> +int usbnet_nway_reset(struct net_device *net)
> +{
> + struct usbnet *dev = netdev_priv(net);
> +
> + if (!dev->mii.mdio_write)
> + return -EOPNOTSUPP;
> +
> + return mii_nway_restart(&dev->mii);
> +}
> +EXPORT_SYMBOL_GPL(usbnet_nway_reset);
> +
> /* drivers may override default ethtool_ops in their bind() routine */
> static struct ethtool_ops usbnet_ethtool_ops = {
> + .get_settings = usbnet_get_settings,
> + .set_settings = usbnet_set_settings,
> .get_drvinfo = usbnet_get_drvinfo,
> .get_link = usbnet_get_link,
> + .nway_reset = usbnet_nway_reset,
> .get_msglevel = usbnet_get_msglevel,
> .set_msglevel = usbnet_set_msglevel,
> };
> Index: linux-cg/drivers/usb/net/usbnet.h
> ===================================================================
> --- linux-cg.orig/drivers/usb/net/usbnet.h 2006-09-17
> 00:05:53.000000000 +0200
> +++ linux-cg/drivers/usb/net/usbnet.h 2006-09-17 00:07:53.000000000 +0200
> @@ -167,9 +167,13 @@
> extern void usbnet_defer_kevent (struct usbnet *, int);
> extern void usbnet_skb_return (struct usbnet *, struct sk_buff *);
>
> +extern int usbnet_get_settings (struct net_device *net, struct
> ethtool_cmd *cmd);
> +extern int usbnet_set_settings (struct net_device *net, struct
> ethtool_cmd *cmd);
> +extern u32 usbnet_get_link (struct net_device *net);
> extern u32 usbnet_get_msglevel (struct net_device *);
> extern void usbnet_set_msglevel (struct net_device *, u32);
> extern void usbnet_get_drvinfo (struct net_device *, struct
> ethtool_drvinfo *);
> +extern int usbnet_nway_reset(struct net_device *net);
>
> /* messaging support includes the interface name, so it must not be
> * used before it has one ... notably, in minidriver bind() calls.
>
>
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