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author | Ben Hutchings <ben@decadent.org.uk> | 2014-05-19 04:25:59 +0400 |
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committer | Ben Hutchings <ben@decadent.org.uk> | 2014-05-19 04:28:40 +0400 |
commit | 678e30df2e5664619e06fcfea5490a476826d8fe (patch) | |
tree | 382c6613dfd5cb91e6fcab80d53b4cd7c18cb195 /include | |
parent | 38c891a49dec43dbb1575cc40d10dbd49c4961ab (diff) | |
download | linux-678e30df2e5664619e06fcfea5490a476826d8fe.tar.xz |
ethtool: Expand documentation of ethtool_ops::{get,set}_rxfh()
Some corner-cases are not explained properly.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/ethtool.h | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 212f537fc686..886e127d51a6 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -162,15 +162,16 @@ static inline u32 ethtool_rxfh_indir_default(u32 index, u32 n_rx_rings) * Will not be called if @get_rxfh_indir_size returns zero. * @get_rxfh: Get the contents of the RX flow hash indirection table and hash * key. - * Will not be called if @get_rxfh_indir_size and @get_rxfh_key_size - * returns zero. + * Will only be called if one or both of @get_rxfh_indir_size and + * @get_rxfh_key_size are implemented and return non-zero. * Returns a negative error code or zero. * @set_rxfh_indir: Set the contents of the RX flow hash indirection table. * Will not be called if @get_rxfh_indir_size returns zero. - * @set_rxfh: Set the contents of the RX flow hash indirection table and - * hash key. - * Will not be called if @get_rxfh_indir_size and @get_rxfh_key_size - * returns zero. + * @set_rxfh: Set the contents of the RX flow hash indirection table and/or + * hash key. Either or both arguments may be %NULL if that attribute + * is not to be changed. + * Will only be called if one or both of @get_rxfh_indir_size and + * @get_rxfh_key_size are implemented and return non-zero. * Returns a negative error code or zero. * @get_channels: Get number of channels. * @set_channels: Set number of channels. Returns a negative error code or @@ -244,8 +245,8 @@ struct ethtool_ops { int (*reset)(struct net_device *, u32 *); u32 (*get_rxfh_key_size)(struct net_device *); u32 (*get_rxfh_indir_size)(struct net_device *); - int (*get_rxfh)(struct net_device *, u32 *, u8 *); - int (*set_rxfh)(struct net_device *, u32 *, u8 *); + int (*get_rxfh)(struct net_device *, u32 *indir, u8 *key); + int (*set_rxfh)(struct net_device *, u32 *indir, u8 *key); int (*get_rxfh_indir)(struct net_device *, u32 *); int (*set_rxfh_indir)(struct net_device *, const u32 *); void (*get_channels)(struct net_device *, struct ethtool_channels *); |