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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB5125.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f1b9d36b-cd65-4cdd-6c3f-08d96e882747 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Sep 2021 03:08:50.1652 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: zEFxmCVLEVAnWsDWpmRdA16DaorQ8//TmKKRAl7p9ykDk8mUUJMPnkw++5GIFr8kVFAO5LWq7BGlIsJ8KHBHjw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR11MB4984 X-OriginatorOrg: intel.com Subject: Re: [dpdk-stable] [PATCH] net/ice: fix representor port segmentation fault X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" > -----Original Message----- > From: Wang, Haiyue > Sent: Thursday, September 2, 2021 10:45 PM > To: Yu, DapengX ; Yang, Qiming > ; Zhang, Qi Z > Cc: dev@dpdk.org; stable@dpdk.org > Subject: RE: [PATCH] net/ice: fix representor port segmentation fault >=20 > > -----Original Message----- > > From: Yu, DapengX > > Sent: Thursday, September 2, 2021 17:44 > > To: Yang, Qiming ; Zhang, Qi Z > > > > Cc: dev@dpdk.org; Wang, Haiyue ; Yu, DapengX > > ; stable@dpdk.org > > Subject: [PATCH] net/ice: fix representor port segmentation fault > > > > From: Dapeng Yu > > > > If DCF representor port is closed after DCF port is closed, there will > > be segmentation fault because representor accesses the released > > resource of DCF port. > > > > This patch makes DCF representor port is always closed before DCF port > > is closed. > > > > Fixes: 5674465a32c8 ("net/ice: add DCF VLAN handling") > > Cc: stable@dpdk.org > > > > Signed-off-by: Dapeng Yu > > --- > > drivers/net/ice/ice_dcf_ethdev.c | 1 + > > drivers/net/ice/ice_dcf_ethdev.h | 1 + > > drivers/net/ice/ice_dcf_vf_representor.c | 26 > > ++++++++++++++++++++---- > > 3 files changed, 24 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/net/ice/ice_dcf_ethdev.c > > b/drivers/net/ice/ice_dcf_ethdev.c > > index cab7c4da87..b837f69fd4 100644 > > --- a/drivers/net/ice/ice_dcf_ethdev.c > > +++ b/drivers/net/ice/ice_dcf_ethdev.c > > @@ -874,6 +874,7 @@ ice_dcf_dev_close(struct rte_eth_dev *dev) > > if (rte_eal_process_type() !=3D RTE_PROC_PRIMARY) > > return 0; > > > > + ice_dcf_vf_repr_close_all(adapter); > > ice_dcf_free_repr_info(adapter); > > ice_dcf_uninit_parent_adapter(dev); > > ice_dcf_uninit_hw(dev, &adapter->real_hw); diff --git > > a/drivers/net/ice/ice_dcf_ethdev.h b/drivers/net/ice/ice_dcf_ethdev.h > > index 8510e37119..9e8d3ef0c5 100644 > > --- a/drivers/net/ice/ice_dcf_ethdev.h > > +++ b/drivers/net/ice/ice_dcf_ethdev.h > > @@ -64,5 +64,6 @@ int ice_dcf_vf_repr_init(struct rte_eth_dev > > *vf_rep_eth_dev, void *init_param); int ice_dcf_vf_repr_uninit(struct > > rte_eth_dev *vf_rep_eth_dev); int ice_dcf_vf_repr_init_vlan(struct > > rte_eth_dev *vf_rep_eth_dev); void ice_dcf_vf_repr_stop_all(struct > > ice_dcf_adapter *dcf_adapter); > > +void ice_dcf_vf_repr_close_all(struct ice_dcf_adapter *dcf_adapter); > > > > #endif /* _ICE_DCF_ETHDEV_H_ */ > > diff --git a/drivers/net/ice/ice_dcf_vf_representor.c > > b/drivers/net/ice/ice_dcf_vf_representor.c > > index 970461f3e9..121dea7483 100644 > > --- a/drivers/net/ice/ice_dcf_vf_representor.c > > +++ b/drivers/net/ice/ice_dcf_vf_representor.c > > @@ -46,6 +46,7 @@ static int > > ice_dcf_vf_repr_dev_stop(struct rte_eth_dev *dev) { > > dev->data->dev_link.link_status =3D ETH_LINK_DOWN; > > + dev->data->dev_started =3D 0; > > > > return 0; > > } > > @@ -53,6 +54,7 @@ ice_dcf_vf_repr_dev_stop(struct rte_eth_dev *dev) > > static int ice_dcf_vf_repr_dev_close(struct rte_eth_dev *dev) { > > + (void)ice_dcf_vf_repr_dev_stop(dev); >=20 > Do we truly need the "(void)" ? Here use (void) to make discarding of return value explicit. There will be no compiler(clang, icc, and gcc) warning even if remove (void= ) So it is fine without that. >=20 > > return ice_dcf_vf_repr_uninit(dev); > > } > > > > @@ -464,7 +466,6 @@ void > > ice_dcf_vf_repr_stop_all(struct ice_dcf_adapter *dcf_adapter) { > > uint16_t vf_id; > > - int ret; > > > > if (!dcf_adapter->repr_infos) > > return; > > @@ -475,8 +476,25 @@ ice_dcf_vf_repr_stop_all(struct ice_dcf_adapter > *dcf_adapter) > > if (!vf_rep_eth_dev || vf_rep_eth_dev->data->dev_started > =3D=3D 0) > > continue; > > > > - ret =3D ice_dcf_vf_repr_dev_stop(vf_rep_eth_dev); > > - if (!ret) > > - vf_rep_eth_dev->data->dev_started =3D 0; > > + (void)ice_dcf_vf_repr_dev_stop(vf_rep_eth_dev); > > + } > > +} > > + > > +void > > +ice_dcf_vf_repr_close_all(struct ice_dcf_adapter *dcf_adapter) { > > + uint16_t vf_id; > > + > > + if (!dcf_adapter->repr_infos) > > + return; > > + > > + for (vf_id =3D 0; vf_id < dcf_adapter->real_hw.num_vfs; vf_id++) { > > + struct rte_eth_dev *vf_rep_eth_dev =3D > > + dcf_adapter- > >repr_infos[vf_id].vf_rep_eth_dev; > > + if (!vf_rep_eth_dev) > > + continue; > > + > > + (void)ice_dcf_vf_repr_dev_close(vf_rep_eth_dev); > > + (void)rte_eth_dev_release_port(vf_rep_eth_dev); > > } > > } > > -- > > 2.27.0