From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: [RFC] r8169 : why SG / TX checksum are default disabled Date: Wed, 18 Jul 2012 00:39:41 +0200 Message-ID: <1342564781.2626.1264.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Hayes Wang To: Francois Romieu Return-path: Received: from mail-qa0-f46.google.com ([209.85.216.46]:39457 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754648Ab2GQWjq (ORCPT ); Tue, 17 Jul 2012 18:39:46 -0400 Received: by qadb17 with SMTP id b17so2648701qad.19 for ; Tue, 17 Jul 2012 15:39:45 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: Hi Francois I was wondering why Scatter Gather (NETIF_F_SG) and TX checksum (NETIF_F_IP_CSUM) were disabled by default on r8169. Couldnt we enable them by default, maybe for a whitelist of "good" nics ? (I found that activating them with ethtool automatically enables GSO, and performance with GSO is not good) Thanks