From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by dpdk.org (Postfix) with ESMTP id 93EC437A2; Fri, 13 Jul 2018 05:11:56 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Jul 2018 20:11:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,346,1526367600"; d="scan'208";a="64358502" Received: from kmsmsx151.gar.corp.intel.com ([172.21.73.86]) by FMSMGA003.fm.intel.com with ESMTP; 12 Jul 2018 20:11:54 -0700 Received: from pgsmsx103.gar.corp.intel.com ([169.254.2.4]) by KMSMSX151.gar.corp.intel.com ([169.254.10.13]) with mapi id 14.03.0319.002; Fri, 13 Jul 2018 11:11:53 +0800 From: "Zhao1, Wei" To: "Zhang, Qi Z" , "dev@dpdk.org" CC: "stable@dpdk.org" Thread-Topic: [PATCH] net/i40e: fix FDIR check programming status error Thread-Index: AQHUGPPDyQxt3YUWcUS+aGUpXYriU6SL9L+AgACHJAA= Date: Fri, 13 Jul 2018 03:11:52 +0000 Message-ID: References: <1531297520-16545-1-git-send-email-wei.zhao1@intel.com> <039ED4275CED7440929022BC67E7061153259C5E@SHSMSX103.ccr.corp.intel.com> In-Reply-To: <039ED4275CED7440929022BC67E7061153259C5E@SHSMSX103.ccr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.200.100 dlp-reaction: no-action x-originating-ip: [172.30.20.205] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH] net/i40e: fix FDIR check programming status error 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: , X-List-Received-Date: Fri, 13 Jul 2018 03:11:57 -0000 This code change is ok also, but it seems need to add more Judging branch? IF you think it is almost the same, I WILL commit a new v2. > -----Original Message----- > From: Zhang, Qi Z > Sent: Friday, July 13, 2018 11:06 AM > To: Zhao1, Wei ; dev@dpdk.org > Cc: stable@dpdk.org > Subject: RE: [PATCH] net/i40e: fix FDIR check programming status error >=20 >=20 >=20 > > -----Original Message----- > > From: Zhao1, Wei > > Sent: Wednesday, July 11, 2018 4:25 PM > > To: dev@dpdk.org > > Cc: Zhang, Qi Z ; stable@dpdk.org; Zhao1, Wei > > > > Subject: [PATCH] net/i40e: fix FDIR check programming status error > > > > In i40e FDIR PMD code for checking programming status function > > i40e_check_fdir_programming_status(), the initial value of return > > value ret should be set to -1 not 0, because if DD bit of > > I40E_RX_DESC_STATUS_DD is not write back, this function will return > > 0 to upper function, this give an error info to upper function, the > > fact for this is it is time out for DD write back and it should return = -1. > > > > Fixes: 05999aab4ca6 ("i40e: add or delete flow director") > > Signed-off-by: Wei Zhao > > --- > > drivers/net/i40e/i40e_fdir.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/net/i40e/i40e_fdir.c > > b/drivers/net/i40e/i40e_fdir.c index > > d41601a..b958bf6 100644 > > --- a/drivers/net/i40e/i40e_fdir.c > > +++ b/drivers/net/i40e/i40e_fdir.c > > @@ -1315,7 +1315,7 @@ i40e_check_fdir_programming_status(struct > > i40e_rx_queue *rxq) > > uint32_t rx_status; > > uint32_t len, id; > > uint32_t error; > > - int ret =3D 0; > > + int ret =3D -1; > > > > rxdp =3D &rxq->rx_ring[rxq->rx_tail]; > > qword1 =3D rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len); > > @@ -1360,6 +1360,7 @@ i40e_check_fdir_programming_status(struct > > i40e_rx_queue *rxq) > > I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq- > >nb_rx_desc - 1); > > else > > I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->rx_tail - 1); > > + ret =3D 0; >=20 > Is it possible to overwrite previous ret =3D -1 which is not what we want= ? >=20 > I would prefer >=20 > int ret =3D 0; >=20 > If (dd bit is set) { > If xxx > Ret =3D -1; > If xxx > Ret =3D -1; > } else { > ret =3D -1; > } >=20 > return ret; >=20 > > } > > > > return ret; > > -- > > 2.7.5