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authorBen Hutchings <bhutchings@solarflare.com>2009-10-05 10:59:58 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-07 01:10:44 -0700
commitd73d3a8cb4723e161589864741d8528d70b350eb (patch)
treeeece04666dfccff368e7d6fc6665bd328987fd46 /net/core
parentd250a5f90e53f5e150618186230795352d154c88 (diff)
ethtool: Add reset operation
After updating firmware stored in flash, users may wish to reset the relevant hardware and start the new firmware immediately. This should not be completely automatic as it may be disruptive. A selective reset may also be useful for debugging or diagnostics. This adds a separate reset operation which takes flags indicating the components to be reset. Drivers are allowed to reset only a subset of those requested, and must indicate the actual subset. This allows the use of generic component masks and some future expansion. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/ethtool.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index e1951084b97..d8aee584e8d 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -302,6 +302,26 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
return ret;
}
+static int ethtool_reset(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value reset;
+ int ret;
+
+ if (!dev->ethtool_ops->reset)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&reset, useraddr, sizeof(reset)))
+ return -EFAULT;
+
+ ret = dev->ethtool_ops->reset(dev, &reset.data);
+ if (ret)
+ return ret;
+
+ if (copy_to_user(useraddr, &reset, sizeof(reset)))
+ return -EFAULT;
+ return 0;
+}
+
static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
{
struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
@@ -1089,6 +1109,9 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
case ETHTOOL_FLASHDEV:
rc = ethtool_flash_device(dev, useraddr);
break;
+ case ETHTOOL_RESET:
+ rc = ethtool_reset(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}