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authorDavid Decotigny <decot@google.com>2011-04-27 22:32:38 +0400
committerDavid S. Miller <davem@davemloft.net>2011-04-30 01:01:30 +0400
commit8ae6daca85c8bbd6a32c382db5e2a2a989f8bed2 (patch)
tree0c85476c2af6568c3d3a73a960d582d2f91a1256 /include/linux/ethtool.h
parent36504605432996590f889e33d47e2d9c581f7569 (diff)
downloadlinux-8ae6daca85c8bbd6a32c382db5e2a2a989f8bed2.tar.xz
ethtool: Call ethtool's get/set_settings callbacks with cleaned data
This makes sure that when a driver calls the ethtool's get/set_settings() callback of another driver, the data passed to it is clean. This guarantees that speed_hi will be zeroed correctly if the called callback doesn't explicitely set it: we are sure we don't get a corrupted speed from the underlying driver. We also take care of setting the cmd field appropriately (ETHTOOL_GSET/SSET). This applies to dev_ethtool_get_settings(), which now makes sure it sets up that ethtool command parameter correctly before passing it to drivers. This also means that whoever calls dev_ethtool_get_settings() does not have to clean the ethtool command parameter. This function also becomes an exported symbol instead of an inline. All drivers visible to make allyesconfig under x86_64 have been updated. Signed-off-by: David Decotigny <decot@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/ethtool.h')
-rw-r--r--include/linux/ethtool.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 7e6e0a89ca26..4194a2067a14 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -744,7 +744,9 @@ bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported);
/**
* struct ethtool_ops - optional netdev operations
* @get_settings: Get various device settings including Ethernet link
- * settings. Returns a negative error code or zero.
+ * settings. The @cmd parameter is expected to have been cleared
+ * before get_settings is called. Returns a negative error code or
+ * zero.
* @set_settings: Set various device settings including Ethernet link
* settings. Returns a negative error code or zero.
* @get_drvinfo: Report driver/device information. Should only set the