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| author | Ben Hutchings <ben@decadent.org.uk> | 2014-02-12 22:14:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-02-12 17:33:03 -0500 |
| commit | 590912298c2d7d9d69c87d93af1f2f8b365f1e04 (patch) | |
| tree | dd78cdf083806a613a493b563ab38f5fced988ac | |
| parent | 4e5a62db2bed17b2b6241850f330c820f75bc3cd (diff) | |
| download | linux-590912298c2d7d9d69c87d93af1f2f8b365f1e04.tar.bz2 | |
ethtool: Expand documentation of struct ethtool_stats
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/uapi/linux/ethtool.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index f246f3703ed8..e96aec0bf7c1 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -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]; }; |