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[62.23.145.78]) by smtp.gmail.com with ESMTPSA id y18sm2809939wro.80.2019.04.18.08.08.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 18 Apr 2019 08:08:14 -0700 (PDT) Date: Thu, 18 Apr 2019 17:08:13 +0200 From: Adrien Mazarguil To: Ferruh Yigit Cc: Gaetan Rivet , dev@dpdk.org Message-ID: <20190418150813.GF4889@6wind.com> References: <20190418130419.25675-1-adrien.mazarguil@6wind.com> <23381495-84ea-a8ff-939a-cf56f4447072@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline In-Reply-To: <23381495-84ea-a8ff-939a-cf56f4447072@intel.com> Subject: Re: [dpdk-dev] [PATCH] net/failsafe: fix source port ID in Rx packets X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Message-ID: <20190418150813.RkKsITzDt5A8Axf1Hlka7QGamdIH6s054R528zgDkBM@z> On Thu, Apr 18, 2019 at 03:42:24PM +0100, Ferruh Yigit wrote: > On 4/18/2019 2:11 PM, Adrien Mazarguil wrote: > > When passed to the application, Rx packets retain the port ID value > > originally set by slave devices. Unfortunately these IDs have no meaning to > > applications, which are typically unaware of their existence. > > > > This confuses those caring about the source port field in mbufs (m->port) > > which experience issues ranging from traffic drop to crashes. > > > > Fixes: a46f8d584eb8 ("net/failsafe: add fail-safe PMD") > > Signed-off-by: Adrien Mazarguil > > --- > > drivers/net/failsafe/failsafe_rxtx.c | 21 +++++++++++++++++++++ > > 1 file changed, 21 insertions(+) > > > > diff --git a/drivers/net/failsafe/failsafe_rxtx.c b/drivers/net/failsafe/failsafe_rxtx.c > > index 231c83291..e78624127 100644 > > --- a/drivers/net/failsafe/failsafe_rxtx.c > > +++ b/drivers/net/failsafe/failsafe_rxtx.c > > @@ -61,6 +61,21 @@ failsafe_set_burst_fn(struct rte_eth_dev *dev, int force_safe) > > rte_wmb(); > > } > > > > +/* > > + * Override source port in Rx packets. > > + * > > + * Make Rx packets originate from this PMD instance instead of one of its > > + * slaves. This is mandatory to avoid breaking applications. > > + */ > > +static void > > +failsafe_rx_set_port(struct rte_mbuf **rx_pkts, uint16_t nb_pkts, uint16_t port) > > +{ > > + unsigned int i; > > + > > + for (i = 0; i != nb_pkts; ++i) > > + rx_pkts[i]->port = port; > > +} > > + > > uint16_t > > failsafe_rx_burst(void *queue, > > struct rte_mbuf **rx_pkts, > > @@ -87,6 +102,9 @@ failsafe_rx_burst(void *queue, > > sdev = sdev->next; > > } while (nb_rx == 0 && sdev != rxq->sdev); > > rxq->sdev = sdev; > > + if (nb_rx) > > + failsafe_rx_set_port(rx_pkts, nb_rx, > > + rxq->priv->dev->data->port_id); > > error: struct "fs_priv" has no field "dev" > > I guess intention is: "rxq->priv->data->port_id" Indeed, I validated this patch as is against v18.11 and overlooked a compilation check against master. I'll send an updated version with Cc stable and all, thanks! -- Adrien Mazarguil 6WIND