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Description of problem:
Found during testing of new feature "Setting receive flow hash indirection table to its default value". This feature is documented in man page but is missing in ethtool --help.

Version-Release number of selected component (if applicable):
ethtool-4.5-2.el7

Steps to Reproduce:
1. ethtool -h
2. look for section describing -X (--set-rxfh-indir) parameter

Actual results:
ethtool -X|--set-rxfh-indir|--rxfh DEVNAME	Set Rx flow hash indirection and/or hash key
		[ equal N | weight W0 W1 ... ]
		[ hkey %x:%x:%x:%x:%x:.... ]

Expected results:
ethtool -X|--set-rxfh-indir|--rxfh DEVNAME	Set Rx flow hash indirection and/or hash key
		[ equal N | weight W0 W1 ... | default ]
		[ hkey %x:%x:%x:%x:%x:.... ]

Additional info:
Also probably word "table" is missing in both these descriptions:
ethtool -x|--show-rxfh-indir|--show-rxfh DEVNAME	Show Rx flow hash indirection and/or hash key
ethtool -X|--set-rxfh-indir|--rxfh DEVNAME	Set Rx flow hash indirection and/or hash key

Patch sent to upstream:

https://patchwork.ozlabs.org/patch/729996/

Verified on ethtool-4.8-1.el7. New "default" setting is displayed in ethtool help.

ethtool -X|--set-rxfh-indir|--rxfh DEVNAME	Set Rx flow hash indirection table and/or RSS hash key
		[ equal N | weight W0 W1 ... | default ]
		[ hkey %x:%x:%x:%x:%x:.... ]

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:1893