lkml.org 
[lkml]   [2020]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH 0/3] l3mdev icmp error route lookup fixes
----- On Oct 11, 2020, at 7:56 PM, David Ahern dsahern@gmail.com wrote:

> On 10/5/20 9:30 AM, David Ahern wrote:
>> On 9/25/20 1:04 PM, Mathieu Desnoyers wrote:
>>> Hi,
>>>
>>> Here is an updated series of fixes for ipv4 and ipv6 which which ensure
>>> the route lookup is performed on the right routing table in VRF
>>> configurations when sending TTL expired icmp errors (useful for
>>> traceroute).
>>>
>>> It includes tests for both ipv4 and ipv6.
>>>
>>> These fixes address specifically address the code paths involved in
>>> sending TTL expired icmp errors. As detailed in the individual commit
>>> messages, those fixes do not address similar icmp errors related to
>>> network namespaces and unreachable / fragmentation needed messages,
>>> which appear to use different code paths.
>>>
>>> The main changes since the last round are updates to the selftests.
>>>
>>
>> This looks fine to me. I noticed the IPv6 large packet test case is
>> failing; the fib6 tracepoint is showing the loopback as the iif which is
>> wrong:
>>
>> ping6 8488 [004] 502.015817: fib6:fib6_table_lookup: table 255 oif 0
>> iif 1 proto 58 ::/0 -> 2001:db8:16:1::1/0 tos 0 scope 0 flags 0 ==> dev
>> lo gw :: err -113
>>
>> I will dig into it later this week.
>>
>
> I see the problem here -- source address selection is picking ::1. I do
> not have a solution to the problem yet, but its resolution is
> independent of the change in this set so I think this one is good to go.

OK, do you want to pick up the RFC patch series, or should I re-send it
without RFC tag ?

Thanks,

Mathieu


--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

\
 
 \ /
  Last update: 2020-10-12 14:58    [W:0.870 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site