From: David Gibson <david@gibson.dropbear.id.au>
To: Stefano Brivio <sbrivio@redhat.com>
Cc: passt-dev@passt.top
Subject: Re: [PATCH 13/18] conf: Rework stepping through chunks of port specifiers
Date: Thu, 9 Apr 2026 10:13:26 +1000 [thread overview]
Message-ID: <adbvJnVIVLtG8Dbp@zatzit> (raw)
In-Reply-To: <20260408234021.7f35406b@elisabeth>
[-- Attachment #1: Type: text/plain, Size: 1099 bytes --]
On Wed, Apr 08, 2026 at 11:40:22PM +0200, Stefano Brivio wrote:
> On Tue, 7 Apr 2026 13:16:25 +1000
> David Gibson <david@gibson.dropbear.id.au> wrote:
>
> > Port specifier strings are made up of ',' separated chunks. Rework the
> > logic we use to step through the chunks.
> >
> > Specifically, maintain a pointer to the end of each chunk as well as the
> > start. This is not really used yet, but will be useful in future.
> >
> > This also has side effect on semantics. Previously an empty specifier (0
> > chunks) was not accepted. Now it is, and will be treated as an "exclude
> > only" spec which excludes only ephemeral ports.
>
> Not really, because getopt_long() wants an argument for those options
> anyway.
This allows an *empty* specifier, not a missing one. i.e.
$ pasta -t '' -u ''
That's a kind of weird thing to do, but it does work after this patch.
--
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
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next prev parent reply other threads:[~2026-04-09 0:48 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 3:16 [PATCH 00/18] Rework forwarding option parsing David Gibson
2026-04-07 3:16 ` [PATCH 01/18] conf: Split parsing of port specifiers from the rest of -[tuTU] parsing David Gibson
2026-04-07 3:16 ` [PATCH 02/18] conf: Simplify handling of default forwarding mode David Gibson
2026-04-07 23:14 ` Stefano Brivio
2026-04-08 1:10 ` David Gibson
2026-04-07 3:16 ` [PATCH 03/18] conf: Move first pass handling of -[TU] next to handling of -[tu] David Gibson
2026-04-07 3:16 ` [PATCH 04/18] doc: Consolidate -[tu] option descriptions for passt and pasta David Gibson
2026-04-07 23:14 ` Stefano Brivio
2026-04-08 1:23 ` David Gibson
2026-04-07 3:16 ` [PATCH 05/18] conf: Permit -[tTuU] all in pasta mode David Gibson
2026-04-07 3:16 ` [PATCH 06/18] fwd: Better split forwarding rule specification from associated sockets David Gibson
2026-04-07 23:14 ` Stefano Brivio
2026-04-08 1:30 ` David Gibson
2026-04-08 21:39 ` Stefano Brivio
2026-04-09 0:47 ` David Gibson
2026-04-07 3:16 ` [PATCH 07/18] fwd_rule: Move forwarding rule formatting David Gibson
2026-04-07 3:16 ` [PATCH 08/18] conf: Pass protocol explicitly to conf_ports_range_except() David Gibson
2026-04-07 3:16 ` [PATCH 09/18] fwd: Split rule building from rule adding David Gibson
2026-04-07 3:16 ` [PATCH 10/18] fwd_rule: Move rule conflict checking from fwd_rule_add() to caller David Gibson
2026-04-07 23:14 ` Stefano Brivio
2026-04-08 1:37 ` David Gibson
2026-04-08 4:42 ` David Gibson
2026-04-07 3:16 ` [PATCH 11/18] fwd: Improve error handling in fwd_rule_add() David Gibson
2026-04-08 21:40 ` Stefano Brivio
2026-04-09 0:10 ` David Gibson
2026-04-07 3:16 ` [PATCH 12/18] conf: Don't be strict about exclusivity of forwarding mode David Gibson
2026-04-08 21:40 ` Stefano Brivio
2026-04-09 0:12 ` David Gibson
2026-04-07 3:16 ` [PATCH 13/18] conf: Rework stepping through chunks of port specifiers David Gibson
2026-04-08 21:40 ` Stefano Brivio
2026-04-09 0:13 ` David Gibson [this message]
2026-04-07 3:16 ` [PATCH 14/18] conf: Rework checking for garbage after a range David Gibson
2026-04-08 21:40 ` Stefano Brivio
2026-04-09 0:15 ` David Gibson
2026-04-07 3:16 ` [PATCH 15/18] conf: Move "all" handling to port specifier David Gibson
2026-04-08 21:40 ` Stefano Brivio
2026-04-07 3:16 ` [PATCH 16/18] conf: Allow user-specified auto-scanned port forwarding ranges David Gibson
2026-04-08 21:40 ` Stefano Brivio
2026-04-07 3:16 ` [PATCH 17/18] conf: Move SO_BINDTODEVICE workaround to conf_ports() David Gibson
2026-04-07 3:16 ` [PATCH 18/18] conf: Don't pass raw commandline argument to conf_ports_spec() David Gibson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=adbvJnVIVLtG8Dbp@zatzit \
--to=david@gibson.dropbear.id.au \
--cc=passt-dev@passt.top \
--cc=sbrivio@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://passt.top/passt
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for IMAP folder(s).