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Message-ID: <VI1PR04MB5134872815E02B053B383C08EC340@VI1PR04MB5134.eurprd04.prod.outlook.com> Date: Thu, 2 May 2019 12:58:04 +0000 From: Laurentiu Tudor <laurentiu.tudor@....com> To: "jocke@...inera.com" <joakim.tjernlund@...inera.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, Madalin-cristian Bucur <madalin.bucur@....com>, Leo Li <leoyang.li@....com>, Roy Pledge <roy.pledge@....com>, Camelia Alexandra Groza <camelia.groza@....com> CC: "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "davem@...emloft.net" <davem@...emloft.net>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org> Subject: RE: [PATCH v2 9/9] dpaa_eth: fix SG frame cleanup > -----Original Message----- > From: Joakim Tjernlund <Joakim.Tjernlund@...inera.com> > Sent: Thursday, May 2, 2019 1:37 PM > > On Thu, 2019-05-02 at 09:05 +0000, Laurentiu Tudor wrote: > > Hi Joakim, > > > > > -----Original Message----- > > > From: Joakim Tjernlund <Joakim.Tjernlund@...inera.com> > > > Sent: Saturday, April 27, 2019 8:11 PM > > > > > > On Sat, 2019-04-27 at 10:10 +0300, laurentiu.tudor@....com wrote: > > > > From: Laurentiu Tudor <laurentiu.tudor@....com> > > > > > > > > Fix issue with the entry indexing in the sg frame cleanup code being > > > > off-by-1. This problem showed up when doing some basic iperf tests > and > > > > manifested in traffic coming to a halt. > > > > > > > > Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com> > > > > Acked-by: Madalin Bucur <madalin.bucur@....com> > > > > > > Wasn't this a stable candidate too? > > > > Yes, it is. I forgot to add the cc:stable tag, sorry about that. > > Then this is a bug fix that should go directly to linus/stable. > > I note that > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/log/drivers/net/ethernet/freescale/dpaa?h=linux-4.19.y Not sure I understand ... I don't see the patch in the link. > is in 4.19 but not in 4.14 , is it not appropriate for 4.14? I think it makes sense to go in both stable trees. --- Best Regards, Laurentiu > > > > > > --- > > > > drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +- > > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > > > diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > > b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > > > index daede7272768..40420edc9ce6 100644 > > > > --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > > > +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > > > @@ -1663,7 +1663,7 @@ static struct sk_buff > *dpaa_cleanup_tx_fd(const > > > struct dpaa_priv *priv, > > > > qm_sg_entry_get_len(&sgt[0]), > dma_dir); > > > > > > > > /* remaining pages were mapped with > skb_frag_dma_map() > > > */ > > > > - for (i = 1; i < nr_frags; i++) { > > > > + for (i = 1; i <= nr_frags; i++) { > > > > WARN_ON(qm_sg_entry_is_ext(&sgt[i])); > > > > > > > > dma_unmap_page(dev, qm_sg_addr(&sgt[i]), > > > > -- > > > > 2.17.1 > > > >
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