From da8ac86c4a56a14bf8deea7d2f92d0a453c67f91 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Date: Tue, 15 Feb 2011 16:59:18 +0000 Subject: net: use ndo_fix_features for ethtool_ops->set_flags MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- net/core/ethtool.c | 31 +++++++++++++++++++++++++++++-- 1 file changed, 29 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 6599997..65b3d50 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -427,6 +427,34 @@ static int ethtool_set_one_feature(struct net_device *dev, } } +static int __ethtool_set_flags(struct net_device *dev, u32 data) +{ + u32 changed; + + if (data & ~flags_dup_features) + return -EINVAL; + + /* legacy set_flags() op */ + if (dev->ethtool_ops->set_flags) { + if (unlikely(dev->hw_features & flags_dup_features)) + netdev_warn(dev, + "driver BUG: mixed hw_features and set_flags()\n"); + return dev->ethtool_ops->set_flags(dev, data); + } + + /* allow changing only bits set in hw_features */ + changed = (data ^ dev->wanted_features) & flags_dup_features; + if (changed & ~dev->hw_features) + return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; + + dev->wanted_features = + (dev->wanted_features & ~changed) | data; + + netdev_update_features(dev); + + return 0; +} + static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) { struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET }; @@ -1768,8 +1796,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr) ethtool_op_get_flags)); break; case ETHTOOL_SFLAGS: - rc = ethtool_set_value(dev, useraddr, - dev->ethtool_ops->set_flags); + rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); break; case ETHTOOL_GPFLAGS: rc = ethtool_get_value(dev, useraddr, ethcmd, -- cgit v1.1