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-rw-r--r--include/uapi/linux/ethtool.h12
1 files changed, 7 insertions, 5 deletions
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index d47d31d6fa0e..cba18e3f8fab 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -850,7 +850,8 @@ 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.
+ * @indir_size: On entry, the array size of the user buffer, 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 in bytes,
@@ -861,10 +862,10 @@ struct ethtool_rxfh_indir {
* of size @indir_size followed by hash key of size @key_size.
*
* 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 +875,7 @@ 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