From owner-freebsd-net Thu Aug 16 23:24:54 2001 Delivered-To: freebsd-net@freebsd.org Received: from rbn-gw.bgtu.debryansk.ru (rbn-gw.bgtu.debryansk.ru [62.76.89.2]) by hub.freebsd.org (Postfix) with ESMTP id 30DC137B40D for ; Thu, 16 Aug 2001 23:24:41 -0700 (PDT) (envelope-from kapr@acm.org) Received: from server.bitmcnit.bryansk.su (root@bitmcnit.bryansk.su [192.168.121.2]) by rbn-gw.bgtu.debryansk.ru (8.11.2/8.11.2) with ESMTP id f7H6L0S01338 for ; Fri, 17 Aug 2001 10:21:00 +0400 Received: (from uucp@localhost) by server.bitmcnit.bryansk.su (8.9.3/8.9.3) with UUCP id LAA05045 for freebsd-net@freebsd.org; Thu, 16 Aug 2001 11:05:34 +0400 Received: (from alex@localhost) by kapran.bitmcnit.bryansk.su (8.11.4/8.11.4) id f7G7BnD01440 for freebsd-net@freebsd.org; Thu, 16 Aug 2001 11:11:49 +0400 (MSD) (envelope-from kapr@acm.org) X-Authentication-Warning: kapran.bitmcnit.bryansk.su: alex set sender to kapr@acm.org using -f Date: Thu, 16 Aug 2001 11:11:48 +0400 From: Alex Kapranoff To: freebsd-net@FreeBSD.ORG Subject: What is 'checksum offload'? Message-ID: <20010816111147.A1328@kapran.bitmcnit.bryansk.su> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.18i X-Operating-System: FreeBSD 5.0-CURRENT i386 Organization: Inner Mongolia Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Good day, I'm in the process of translation release notes and have trouble understanding and thus interpreting the term 'checksum offload' which is a feature of nge(4) and lge(4) drivers. Does it mean that the controllers are able to compute TCP/IP checksums in hardware thus taking off load from CPU? Don't hesitate to tell me I'm stupid and this has nothing to do with TCP/IP :) Oh, and what's a jumbogram? Can someone clarify this with one or two sentences to a man with a negligible Ethernet knowledge? Thanks! -- Alex Kapranoff, Voice: +7(0832)791845 We've lived 5457 hours in the brand new millenium... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message