From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Tuexen Date: Thu, 15 Oct 2020 21:35:28 +0000 Subject: Re: [PATCHv3 net-next 16/16] sctp: enable udp tunneling socks Message-Id: <2EF3C673-B68F-4CA8-928E-07B72586434F@fh-muenster.de> MIME-Version: 1 Content-Type: multipart/mixed; boundary="Apple-Mail=_70890405-61CD-4C8C-9FE7-3B633FFDDF53" List-Id: References: <20201015174252.GB11030@localhost.localdomain> In-Reply-To: To: David Laight Cc: Marcelo Ricardo Leitner , Xin Long , network dev , "linux-sctp@vger.kernel.org" , Neil Horman , "davem@davemloft.net" , "gnault@redhat.com" , "pabeni@redhat.com" , "willemdebruijn.kernel@gmail.com" --Apple-Mail=_70890405-61CD-4C8C-9FE7-3B633FFDDF53 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii > On 15. Oct 2020, at 23:23, David Laight = wrote: >=20 > From: Marcelo Ricardo Leitner >> Sent: 15 October 2020 18:43 >>=20 >> Actually.. >>=20 >> On Tue, Oct 13, 2020 at 03:27:41PM +0800, Xin Long wrote: >> ... >>> Also add sysctl udp_port to allow changing the listening >>> sock's port by users. >=20 > I've not read through this change... >=20 > But surely the UDP port (or ports) that you need to use > will depend on the remote system's configuration. The local encapsulation port can be system wide, the remote = encapsulation port is per remote address. See = https://tools.ietf.org/html/rfc6951#section-5.1 Best regards Michael >=20 > So they need to be a property of the socket, not a > system-wide value. >=20 > I can easily imagine my M3UA code connecting to different > network providers which have decided to use different > UDP port numbers. >=20 > David >=20 > - > Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, = MK1 1PT, UK > Registration No: 1397386 (Wales) >=20 --Apple-Mail=_70890405-61CD-4C8C-9FE7-3B633FFDDF53 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEKow ggUSMIID+qADAgECAgkA4wvV+K8l2YEwDQYJKoZIhvcNAQELBQAwgYIxCzAJBgNVBAYTAkRFMSsw KQYDVQQKDCJULVN5c3RlbXMgRW50ZXJwcmlzZSBTZXJ2aWNlcyBHbWJIMR8wHQYDVQQLDBZULVN5 c3RlbXMgVHJ1c3QgQ2VudGVyMSUwIwYDVQQDDBxULVRlbGVTZWMgR2xvYmFsUm9vdCBDbGFzcyAy 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X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4CA16C433E7 for ; Thu, 15 Oct 2020 21:35:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D6BF420759 for ; Thu, 15 Oct 2020 21:35:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731337AbgJOVfe (ORCPT ); Thu, 15 Oct 2020 17:35:34 -0400 Received: from mail-n.franken.de ([193.175.24.27]:43909 "EHLO drew.franken.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729756AbgJOVfe (ORCPT ); Thu, 15 Oct 2020 17:35:34 -0400 Received: from [IPv6:2a02:8109:1140:c3d:14de:599e:5c6:fa0d] (unknown [IPv6:2a02:8109:1140:c3d:14de:599e:5c6:fa0d]) (Authenticated sender: macmic) by drew.franken.de (Postfix) with ESMTPSA id 0E171721E281A; Thu, 15 Oct 2020 23:35:30 +0200 (CEST) From: Michael Tuexen Message-ID: <2EF3C673-B68F-4CA8-928E-07B72586434F@fh-muenster.de> Content-Type: multipart/signed; boundary="Apple-Mail=_70890405-61CD-4C8C-9FE7-3B633FFDDF53"; protocol="application/pkcs7-signature"; micalg=sha-256 Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Subject: Re: [PATCHv3 net-next 16/16] sctp: enable udp tunneling socks Date: Thu, 15 Oct 2020 23:35:28 +0200 In-Reply-To: Cc: Marcelo Ricardo Leitner , Xin Long , network dev , "linux-sctp@vger.kernel.org" , Neil Horman , "davem@davemloft.net" , "gnault@redhat.com" , "pabeni@redhat.com" , "willemdebruijn.kernel@gmail.com" To: David Laight References: <20201015174252.GB11030@localhost.localdomain> X-Mailer: Apple Mail (2.3608.120.23.2.4) Precedence: bulk List-ID: X-Mailing-List: linux-sctp@vger.kernel.org Message-ID: <20201015213528.YQoCRhdWZfji5s28b16xgU1vaucV62-pVsaBSYh6j8U@z> --Apple-Mail=_70890405-61CD-4C8C-9FE7-3B633FFDDF53 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii > On 15. Oct 2020, at 23:23, David Laight = wrote: >=20 > From: Marcelo Ricardo Leitner >> Sent: 15 October 2020 18:43 >>=20 >> Actually.. >>=20 >> On Tue, Oct 13, 2020 at 03:27:41PM +0800, Xin Long wrote: >> ... >>> Also add sysctl udp_port to allow changing the listening >>> sock's port by users. >=20 > I've not read through this change... >=20 > But surely the UDP port (or ports) that you need to use > will depend on the remote system's configuration. The local encapsulation port can be system wide, the remote = encapsulation port is per remote address. See = https://tools.ietf.org/html/rfc6951#section-5.1 Best regards Michael >=20 > So they need to be a property of the socket, not a > system-wide value. >=20 > I can easily imagine my M3UA code connecting to different > network providers which have decided to use different > UDP port numbers. >=20 > David >=20 > - > Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, = MK1 1PT, UK > Registration No: 1397386 (Wales) >=20 --Apple-Mail=_70890405-61CD-4C8C-9FE7-3B633FFDDF53 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEKow ggUSMIID+qADAgECAgkA4wvV+K8l2YEwDQYJKoZIhvcNAQELBQAwgYIxCzAJBgNVBAYTAkRFMSsw KQYDVQQKDCJULVN5c3RlbXMgRW50ZXJwcmlzZSBTZXJ2aWNlcyBHbWJIMR8wHQYDVQQLDBZULVN5 c3RlbXMgVHJ1c3QgQ2VudGVyMSUwIwYDVQQDDBxULVRlbGVTZWMgR2xvYmFsUm9vdCBDbGFzcyAy 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