From patchwork Fri Aug 30 09:25:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Bogendoerfer X-Patchwork-Id: 11123633 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D4E5B14F7 for ; Fri, 30 Aug 2019 09:26:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BBD9C23427 for ; Fri, 30 Aug 2019 09:26:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728538AbfH3J0j (ORCPT ); Fri, 30 Aug 2019 05:26:39 -0400 Received: from mx2.suse.de ([195.135.220.15]:41806 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728213AbfH3JZ6 (ORCPT ); Fri, 30 Aug 2019 05:25:58 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 66F3CAFBB; Fri, 30 Aug 2019 09:25:57 +0000 (UTC) From: Thomas Bogendoerfer To: Ralf Baechle , Paul Burton , James Hogan , "David S. Miller" , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v3 net-next 12/15] net: sgi: ioc3-eth: use csum_fold Date: Fri, 30 Aug 2019 11:25:35 +0200 Message-Id: <20190830092539.24550-13-tbogendoerfer@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20190830092539.24550-1-tbogendoerfer@suse.de> References: <20190830092539.24550-1-tbogendoerfer@suse.de> Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org replace open coded checksum folding by csum_fold. Signed-off-by: Thomas Bogendoerfer --- drivers/net/ethernet/sgi/ioc3-eth.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index ed8f997a3cec..05f4b598114c 100644 --- a/drivers/net/ethernet/sgi/ioc3-eth.c +++ b/drivers/net/ethernet/sgi/ioc3-eth.c @@ -1391,16 +1391,12 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff *skb, struct net_device *dev) /* Sum up dest addr, src addr and protocol */ ehsum = eh[0] + eh[1] + eh[2] + eh[3] + eh[4] + eh[5] + eh[6]; - /* Fold ehsum. can't use csum_fold which negates also ... */ - ehsum = (ehsum & 0xffff) + (ehsum >> 16); - ehsum = (ehsum & 0xffff) + (ehsum >> 16); - /* Skip IP header; it's sum is always zero and was * already filled in by ip_output.c */ csum = csum_tcpudp_nofold(ih->saddr, ih->daddr, ih->tot_len - (ih->ihl << 2), - proto, 0xffff ^ ehsum); + proto, csum_fold(ehsum)); csum = (csum & 0xffff) + (csum >> 16); /* Fold again */ csum = (csum & 0xffff) + (csum >> 16);