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ethtool: Expand documentation of struct ethtool_stats

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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2014-02-12 22:14:43 +00:00 • committed by David S. Miller
commit 590912298c
1 changed files with 13 additions and 3 deletions
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16
include/uapi/linux/ethtool.h
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@ -597,10 +597,20 @@ struct ethtool_test {
__u64 data[0];
};
/* for dumping NIC-specific statistics */
/**
* struct ethtool_stats - device-specific statistics
* @cmd: Command number = %ETHTOOL_GSTATS
* @n_stats: On return, the number of statistics
* @data: Array of statistics
*
* Users must use %ETHTOOL_GSSET_INFO or %ETHTOOL_GDRVINFO to find the
* number of statistics that will be returned. They must allocate a
* buffer of the appropriate size (8 * number of statistics)
* immediately following this structure.
*/
struct ethtool_stats {
__u32 cmd; /* ETHTOOL_GSTATS */
__u32 n_stats; /* number of u64's being returned */
__u32 cmd;
__u32 n_stats;
__u64 data[0];
};