Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752229AbbBDGf2 (ORCPT ); Wed, 4 Feb 2015 01:35:28 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:36015 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751270AbbBDGf0 (ORCPT ); Wed, 4 Feb 2015 01:35:26 -0500 Message-ID: <1423031713.11044.141.camel@infradead.org> Subject: Re: [PATCH] tun: orphan an skb on tx From: David Woodhouse To: David Miller Cc: mst@redhat.com, herbert@gondor.apana.org.au, eric.dumazet@gmail.com, jan.kiszka@siemens.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, qemu-devel@nongnu.org Date: Wed, 04 Feb 2015 06:35:13 +0000 In-Reply-To: <20150203.161955.1916354877509427788.davem@davemloft.net> References: <1422826183.11044.72.camel@infradead.org> <20150201.210716.588479604128207372.davem@davemloft.net> <1422862030.11044.86.camel@infradead.org> <20150203.161955.1916354877509427788.davem@davemloft.net> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-yEVZ9t/puY1p22CV9H94" X-Mailer: Evolution 3.12.10 (3.12.10-1.fc21) Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 9247 Lines: 144 --=-yEVZ9t/puY1p22CV9H94 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2015-02-03 at 16:19 -0800, David Miller wrote: > From: David Woodhouse > Date: Mon, 02 Feb 2015 07:27:10 +0000 >=20 > > I'm guessing you don't want to push the *whole* management of the TLS > > control connection *and* the UDP transport, and probing the latter with > > keepalives, into the kernel? I certainly don't :) >=20 > Whilst Herbert Xu and I have discussed in the past supporting > automatic SSL handling of socket data during socket writes in the > kernel, doing TLS stuff would be a bit of a stretch :-) Right. For the DTLS I was thinking we'd do the handshake in userspace and then hand the UDP socket down. At that point it's basically the same as ESP with the bytes in a slightly different place. So I really am looking at an option for "here's a UDP socket to send those tun packets out on, with encryption setup" as the sanest plan I can come up with. --=20 dwmw2 --=-yEVZ9t/puY1p22CV9H94 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISxDCCBjQw ggQcoAMCAQICAR4wDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0 Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcxKTAn BgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3MTAyNDIxMDE1NVoX DTE3MTAyNDIxMDE1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSsw KQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFy dENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVudCBDQTCCASIwDQYJKoZIhvcN AQEBBQADggEPADCCAQoCggEBAMcJg8zOLdgasSmkLhOrlr6KMoOMpohBllVHrdRvEg/q6r8jR+EK 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