From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] net: bcmgenet: fix dma api length mismatch Date: Fri, 18 Mar 2016 23:13:06 -0400 (EDT) Message-ID: <20160318.231306.1347406577388515779.davem@davemloft.net> References: <1458137881.7353.9.camel@edumazet-glaptop3.roam.corp.google.com> <56EAE2A8.5000206@gmail.com> <1458241026.7353.62.camel@edumazet-glaptop3.roam.corp.google.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: f.fainelli@gmail.com, netdev@vger.kernel.org, opendmb@gmail.com To: eric.dumazet@gmail.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:59107 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754481AbcCSDNI (ORCPT ); Fri, 18 Mar 2016 23:13:08 -0400 In-Reply-To: <1458241026.7353.62.camel@edumazet-glaptop3.roam.corp.google.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Eric Dumazet Date: Thu, 17 Mar 2016 11:57:06 -0700 > From: Eric Dumazet > > When un-mapping skb->data in __bcmgenet_tx_reclaim(), > we must use the length that was used in original dma_map_single(), > instead of skb->len that might be bigger (includes the frags) > > We simply can store skb_len into tx_cb_ptr->dma_len and use it > at unmap time. > > Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file") > Signed-off-by: Eric Dumazet Applied and queued up for -stable, thanks.