netdev - Re: [PATCH iproute2-next 0/3] ip/tunnel: Unify tunnel help message print routines

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Date:   Fri, 9 Feb 2018 08:48:00 +0200
From:   Serhey Popovych <serhe.popovych@...il.com>
To:     David Ahern <dsahern@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH iproute2-next 0/3] ip/tunnel: Unify tunnel help message
 print routines

David Ahern wrote:
> On 2/8/18 8:35 PM, David Ahern wrote:
>> On 2/8/18 3:50 AM, Serhey Popovych wrote:
>>> To show only relevant diffs of ip and ipv6 variants help message print
>>> routines needs to be unified and improved.
>>>
>>> Get rid of print_usage() and usage() wrappers: use single function to
>>> output help message. As side effect we return -1 from parse function
>>> instead of calling exit(2) in case of "... tunnel <help|garbage>" is
>>> found.
>>>
>>> Additionally we get pointer to @struct link_util and can directly access
>>> ->id information to prepare customized help message.
>>>
>>> Split calls to fprintf() two group: one that contains format string with
>>> specifiers (thus requiring parameters) and another one that does not.
>>> This helps compiler to optimize calls to fprintf() with fputs() when no
>>> format specifiers in string. Do not use fputs() directly to keep code
>>> formatting nice.
>>>
>>> After this series applied following diffs:
>>>
>>>   # diff -urN ip/link_gre{,6}.c
>>>   # diff -urN ip/link_vti{,6}.c
>>>   # diff -urN ip/link_ip{,6}tnl.c
>>>
>>> in scope of help print routines reduced to necessary minimum.
>>>
>>> Tested minimally by compiling and executing "ip link help <kind>" and
>>> "ip link add type help" commands. Looks correct.
>>>
>>> See individual patch description for more information.
>>
>> Series applied to iproute2-next
>>
>>
> 
> 
> I take that back. Before pushing I noticed you dropped the '6' from the
> name all of the ipv6 print_help functions. Why?
> 

You are right. I probably should not do that change in this series. Will
send v2. There is no '6' in name for link_gre6.c for example so I
decided to drop it from the rest to reduce number of diffs.

Sorry for this.



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