Re: [PATCH net-next v3 3/3] net: icmp: add reasons of the skb drops to icmp protocol

From: David Ahern
Date: Thu Mar 17 2022 - 10:48:53 EST


On 3/16/22 10:05 PM, Jakub Kicinski wrote:
> On Wed, 16 Mar 2022 21:35:47 -0600 David Ahern wrote:
>> On 3/16/22 9:18 PM, Jakub Kicinski wrote:
>>>
>>> I guess this set raises the follow up question to Dave if adding
>>> drop reasons to places with MIB exception stats means improving
>>> the granularity or one MIB stat == one reason?
>>
>> There are a few examples where multiple MIB stats are bumped on a drop,
>> but the reason code should always be set based on first failure. Did you
>> mean something else with your question?
>
> I meant whether we want to differentiate between TYPE, and BROADCAST or
> whatever other possible invalid protocol cases we can get here or just
> dump them all into a single protocol error code.

I think a single one is a good starting point.