Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262052AbTIPTAy (ORCPT ); Tue, 16 Sep 2003 15:00:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262054AbTIPTAy (ORCPT ); Tue, 16 Sep 2003 15:00:54 -0400 Received: from h80ad2599.async.vt.edu ([128.173.37.153]:53136 "EHLO turing-police.cc.vt.edu") by vger.kernel.org with ESMTP id S262052AbTIPTAw (ORCPT ); Tue, 16 Sep 2003 15:00:52 -0400 Message-Id: <200309161900.h8GJ0kYe019776@turing-police.cc.vt.edu> X-Mailer: exmh version 2.6.3 04/04/2003 with nmh-1.0.4+dev To: Vishwas Raman Cc: linux-kernel@vger.kernel.org Subject: Re: Incremental update of TCP Checksum In-Reply-To: Your message of "Tue, 16 Sep 2003 11:50:16 PDT." <3F675B68.8000109@eternal-systems.com> From: Valdis.Kletnieks@vt.edu References: <3F3C07E2.3000305@eternal-systems.com> <20030821134924.GJ7611@naboo> <3F675B68.8000109@eternal-systems.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_-786628835P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Tue, 16 Sep 2003 15:00:45 -0400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1491 Lines: 44 --==_Exmh_-786628835P Content-Type: text/plain; charset=us-ascii On Tue, 16 Sep 2003 11:50:16 PDT, Vishwas Raman said: > Can anyone out there tell me the algorithm to update the checksum > without having to recalculate it. The canonical source is the RFCs: 1071 Computing the Internet checksum. R.T. Braden, D.A. Borman, C. Partridge. Sep-01-1988. (Format: TXT=54941 bytes) (Updated by RFC1141) (Status: UNKNOWN) 1141 Incremental updating of the Internet checksum. T. Mallory, A. Kullberg. Jan-01-1990. (Format: TXT=3587 bytes) (Updates RFC1071) (Updated by RFC1624) (Status: INFORMATIONAL) 1624 Computation of the Internet Checksum via Incremental Update. A. Rijsinghani, Ed.. May 1994. (Format: TXT=9836 bytes) (Updates RFC1141) (Status: INFORMATIONAL) http://www.ietf.org/rfc/rfc1071.txt http://www.ietf.org/rfc/rfc1141.txt http://www.ietf.org/rfc/rfc1624.txt --==_Exmh_-786628835P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQE/Z13dcC3lWbTT17ARAvY9AKDFchcKYguAp8aMok67/g7DJ/jn8QCeP2J5 q1MyVygKydxXD2bbThwHdb8= =RURg -----END PGP SIGNATURE----- --==_Exmh_-786628835P-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/