diff options
Diffstat (limited to 'include/uapi/linux/ethtool.h')
| -rw-r--r-- | include/uapi/linux/ethtool.h | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index d47d31d6fa0e..e3c7a719c76b 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -850,21 +850,23 @@ struct ethtool_rxfh_indir { * struct ethtool_rxfh - command to get/set RX flow hash indir or/and hash key. * @cmd: Specific command number - %ETHTOOL_GRSSH or %ETHTOOL_SRSSH * @rss_context: RSS context identifier. - * @indir_size: On entry, the array size of the user buffer, which may be zero. - * On return from %ETHTOOL_GRSSH, the array size of the hardware - * indirection table. - * @key_size: On entry, the array size of the user buffer in bytes, - * which may be zero. - * On return from %ETHTOOL_GRSSH, the size of the RSS hash key. + * @indir_size: On entry, the array size of the user buffer for the + * indirection table, which may be zero, or (for %ETHTOOL_SRSSH), + * %ETH_RXFH_INDIR_NO_CHANGE. On return from %ETHTOOL_GRSSH, + * the array size of the hardware indirection table. + * @key_size: On entry, the array size of the user buffer for the hash key, + * which may be zero. On return from %ETHTOOL_GRSSH, the size of the + * hardware hash key. * @rsvd: Reserved for future extensions. * @rss_config: RX ring/queue index for each hash value i.e., indirection table - * of size @indir_size followed by hash key of size @key_size. + * of @indir_size __u32 elements, followed by hash key of @key_size + * bytes. * * For %ETHTOOL_GRSSH, a @indir_size and key_size of zero means that only the - * size should be returned. For %ETHTOOL_SRSSH, a @indir_size of 0xDEADBEEF - * means that indir table setting is not requested and a @indir_size of zero - * means the indir table should be reset to default values. This last feature - * is not supported by the original implementations. + * size should be returned. For %ETHTOOL_SRSSH, an @indir_size of + * %ETH_RXFH_INDIR_NO_CHANGE means that indir table setting is not requested + * and a @indir_size of zero means the indir table should be reset to default + * values. */ struct ethtool_rxfh { __u32 cmd; @@ -874,6 +876,7 @@ struct ethtool_rxfh { __u32 rsvd[2]; __u32 rss_config[0]; }; +#define ETH_RXFH_INDIR_NO_CHANGE 0xffffffff /** * struct ethtool_rx_ntuple_flow_spec - specification for RX flow filter |
