Re: [PATCH] net: ipv6: Truncate single route when it doesn't fit into dump buffer.

From: David Miller
Date: Fri May 12 2017 - 13:35:11 EST


From: David Ahern <dsahern@xxxxxxxxx>
Date: Fri, 12 May 2017 10:26:08 -0700

> On 5/12/17 8:24 AM, David Miller wrote:
>> From: Jan Moskyto Matejka <mq@xxxxxx>
>> Date: Fri, 12 May 2017 13:15:10 +0200
>>
>>> -int rt6_dump_route(struct rt6_info *rt, void *p_arg);
>>> +int rt6_dump_route(struct rt6_info *rt, void *p_arg, int truncate);
>>
>> Please use "bool" and "true"/"false" for boolean values.
>>
>> What does ipv4 do in this situation?
>>
>> I'm hesitant to be OK with adding a new nlmsg flag just for this case
>> if we solve this problem differently and using existing mechanisms
>> elsewhere.
>>
>
> I'll take a look at this later today or this weekend; we can't just
> truncate the route returned to userspace.

Agreed.