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From: David Gibson <david@gibson.dropbear.id.au>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: Paul Holzinger <pholzing@redhat.com>, passt-dev@passt.top
Subject: Re: [PATCH 00/22] RFC: Allow configuration of special case NATs
Date: Sat, 17 Aug 2024 18:01:26 +1000	[thread overview]
Message-ID: <ZsBY1md2qXNo6raQ@zatzit.fritz.box> (raw)
In-Reply-To: <20240816170322.7b9cd85b@elisabeth>

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On Fri, Aug 16, 2024 at 05:03:22PM +0200, Stefano Brivio wrote:
> On Fri, 16 Aug 2024 16:45:14 +0200
> Paul Holzinger <pholzing@redhat.com> wrote:
> 
> > Hi,
> > 
> > On 16/08/2024 07:39, David Gibson wrote:
> > > Based on Stefano's recent patch for faster tests.
> > >
> > > Allow the user to specify which addresses are translated when used by
> > > the guest, rather than always being the gateway address or nothing.
> > > We also allow this remapping to go to the host's global address (more
> > > precisely the address assigned to the guest) rather than just host
> > > loopback.
> > >
> > > Suggestions for better names for the new options in patches 20 & 22
> > > are most welcome.
> > >
> > > Along the way to implementing that make many changes to clarify what
> > > various addresses we track mean, fixing a number of small bugs as
> > > well.
> > >
> > > NOTE: there is a bug in 21/22 which breaks some of the passt_tcp perf
> > > tests.  I haven't managed to figure out why it's causing the problem,
> > > or even what the exact triggering conditions are (running the single
> > > stalling iperf alone doesn't do it).  Have to wrap up for today, so I
> > > thought I'd get this out for review anyway.
> > >
> > > Paul, amongst other things, I think this will allow podman to
> > > (finally) nicely address #19213, picking an address to remap to the
> > > host's external address with --nat-guest-addr, much like it already
> > > uses --dns-forward.  
> > 
> > Thanks this looks promising. I will try to test it out next week.
> > 
> > No strong feelings about the naming but how about s/--nat/--map/ for the 
> > options?
> 
> Exactly the same as I suggested offline a while ago. :) I think it's
> easier to understand what it does, that way.

Ok.  I think I was going to do that originally but changed it for
reasons that I've now forgotten.  --map is more consistent with
--no-map-gw too, so I'll change this.

-- 
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson

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  reply	other threads:[~2024-08-17  8:01 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-16  5:39 [PATCH 00/22] RFC: Allow configuration of special case NATs David Gibson
2024-08-16  5:39 ` [PATCH 01/22] treewide: Use "our address" instead of "forwarding address" David Gibson
2024-08-18 15:44   ` Stefano Brivio
2024-08-19  1:28     ` David Gibson
2024-08-16  5:39 ` [PATCH 02/22] util: Helper for formatting MAC addresses David Gibson
2024-08-18 15:44   ` Stefano Brivio
2024-08-19  1:29     ` David Gibson
2024-08-16  5:39 ` [PATCH 03/22] treewide: Rename MAC address fields for clarity David Gibson
2024-08-18 15:45   ` Stefano Brivio
2024-08-19  1:36     ` David Gibson
2024-08-16  5:39 ` [PATCH 04/22] treewide: Use struct assignment instead of memcpy() for IP addresses David Gibson
2024-08-18 15:45   ` Stefano Brivio
2024-08-19  1:38     ` David Gibson
2024-08-16  5:39 ` [PATCH 05/22] conf: Use array indices rather than pointers for DNS array slots David Gibson
2024-08-16  5:39 ` [PATCH 06/22] conf: More accurately count entries added in get_dns() David Gibson
2024-08-16  5:39 ` [PATCH 07/22] conf: Move DNS array bounds checks into add_dns[46] David Gibson
2024-08-16  5:39 ` [PATCH 08/22] conf: Move adding of a nameserver from resolv.conf into subfunction David Gibson
2024-08-16  5:39 ` [PATCH 09/22] conf: Correct setting of dns_match address in add_dns6() David Gibson
2024-08-16  5:39 ` [PATCH 10/22] conf: Treat --dns addresses as guest visible addresses David Gibson
2024-08-16  5:39 ` [PATCH 11/22] conf: Remove incorrect initialisation of addr_ll_seen David Gibson
2024-08-16  5:39 ` [PATCH 12/22] util: Correct sock_l4() binding for link local addresses David Gibson
2024-08-20  0:14   ` Stefano Brivio
2024-08-20  1:29     ` David Gibson
2024-08-16  5:39 ` [PATCH 13/22] treewide: Change misleading 'addr_ll' name David Gibson
2024-08-20  0:15   ` Stefano Brivio
2024-08-20  1:30     ` David Gibson
2024-08-16  5:39 ` [PATCH 14/22] Clarify which addresses in ip[46]_ctx are meaningful where David Gibson
2024-08-16  5:39 ` [PATCH 15/22] Initialise our_tap_ll to ip6.gw when suitable David Gibson
2024-08-16  5:39 ` [PATCH 16/22] fwd: Helpers to clarify what host addresses aren't guest accessible David Gibson
2024-08-20 19:56   ` Stefano Brivio
2024-08-21  1:40     ` David Gibson
2024-08-16  5:39 ` [PATCH 17/22] fwd: Split notion of "our tap address" from gateway for IPv4 David Gibson
2024-08-20 19:56   ` Stefano Brivio
2024-08-21  1:56     ` David Gibson
2024-08-16  5:39 ` [PATCH 18/22] Don't take "our" MAC address from the host David Gibson
2024-08-16  5:40 ` [PATCH 19/22] conf, fwd: Split notion of gateway/router from guest-visible host address David Gibson
2024-08-20 19:56   ` Stefano Brivio
2024-08-21  1:59     ` David Gibson
2024-08-16  5:40 ` [PATCH 20/22] conf: Allow address remapped to host to be configured David Gibson
2024-08-20 19:56   ` Stefano Brivio
2024-08-21  2:23     ` David Gibson
2024-08-16  5:40 ` [PATCH 21/22] fwd: Distinguish translatable from untranslatable addresses on inbound David Gibson
2024-08-16  5:40 ` [PATCH 22/22] fwd, conf: Allow NAT of the guest's assigned address David Gibson
2024-08-20 19:56   ` Stefano Brivio
2024-08-21  2:28     ` David Gibson
2024-08-16 14:45 ` [PATCH 00/22] RFC: Allow configuration of special case NATs Paul Holzinger
2024-08-16 15:03   ` Stefano Brivio
2024-08-17  8:01     ` David Gibson [this message]
2024-08-19  8:46 ` David Gibson
2024-08-19  9:27   ` Stefano Brivio
2024-08-19  9:52     ` David Gibson
2024-08-19 13:01       ` Stefano Brivio
2024-08-20  0:42         ` David Gibson
2024-08-20 20:39           ` Stefano Brivio
2024-08-21  2:51             ` David Gibson

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