From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Cochran Subject: Re: [PATCH net-next 2/2] tuntap: orphan frags before trying to set tx timestamp Date: Wed, 4 Sep 2013 17:57:38 +0200 Message-ID: <20130904155738.GC4194@netboy> References: <1378269226-5969-1-git-send-email-jasowang@redhat.com> <1378269226-5969-2-git-send-email-jasowang@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com To: Jason Wang Return-path: Content-Disposition: inline In-Reply-To: <1378269226-5969-2-git-send-email-jasowang@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wed, Sep 04, 2013 at 12:33:46PM +0800, Jason Wang wrote: > sock_tx_timestamp() will clear all zerocopy flags of skb which may lead the > frags never to be orphaned. This will break guest to guest traffic when zerocopy > is enabled. Fix this by orphaning the frags before trying to set tx time stamp. > > The issue were introduced by commit eda297729171fe16bf34fe5b0419dfb69060f623 > (tun: Support software transmit time stamping). > > Cc: Richard Cochran > Signed-off-by: Jason Wang Acked-by: Richard Cochran