From owner-freebsd-hackers Tue Dec 4 21: 9:38 2001 Delivered-To: freebsd-hackers@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 618) id 8237037B405; Tue, 4 Dec 2001 21:09:35 -0800 (PST) Subject: Re: TCP&IP cksum offload on FreeBSD 4.2 In-Reply-To: from Srinivas Dharmasanam at "Dec 4, 2001 11:58:49 am" To: the_srinivas@hotmail.com (Srinivas Dharmasanam) Date: Tue, 4 Dec 2001 21:09:35 -0800 (PST) Cc: ken@kdm.org, jlemon@flugsvamp.com, hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Message-Id: <20011205050935.8237037B405@hub.freebsd.org> From: wpaul@FreeBSD.ORG (Bill Paul) Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG > Hi, > I'm using the Netgear GA620 Gig ethernet NIC with Tigon II chip. > > Do you know if it is possible to increase the buffer size for standard sized > ethernet frames from 512 buffers to say, 1024? > > I assume I'd have to modify the firmware and the host driver to accomodate > these buffers. I dont plan to use Jumbo frames at all, and I can reduce the > buffers allocated for them if necessary. You would need to change the firmware in order to increase the size of any of the RX rings. All of the Tigon II manuals and a snapshot of my firmware development tree is at the following URL: http://www.freebsd.org/~wpaul/Alteon Note that I'm not sure how this will affect the layout of data structures in the NIC's on-board SRAM. -Bill To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message