From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sunset.davemloft.net (74-93-104-97-Washington.hfc.comcastbusiness.net [74.93.104.97]) by ozlabs.org (Postfix) with ESMTP id 7C5BAB6F1E for ; Sat, 19 Mar 2011 09:14:33 +1100 (EST) Date: Fri, 18 Mar 2011 15:15:09 -0700 (PDT) Message-Id: <20110318.151509.241430327.davem@davemloft.net> To: oakad@yahoo.com Subject: Re: [PATCH v2] gianfar: Fall back to software tcp/udp checksum on older controllers From: David Miller In-Reply-To: <598461.73809.qm@web37603.mail.mud.yahoo.com> References: <598461.73809.qm@web37603.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, mlcreech@gmail.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Alex Dubov Date: Wed, 16 Mar 2011 20:57:13 -0700 (PDT) > As specified by errata eTSEC49 of MPC8548 and errata eTSEC12 of MPC83xx, > older revisions of gianfar controllers will be unable to calculate a TCP/UDP > packet checksum for some alignments of the appropriate FCB. This patch checks > for FCB alignment on such controllers and falls back to software checksumming > if the alignment is known to be bad. > > Signed-off-by: Alex Dubov Applied.