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Wed, 8 Jul 2020 08:41:22 +0000 Received: from BN8PR11MB3795.namprd11.prod.outlook.com ([fe80::c96e:e522:e0dc:490c]) by BN8PR11MB3795.namprd11.prod.outlook.com ([fe80::c96e:e522:e0dc:490c%7]) with mapi id 15.20.3153.030; Wed, 8 Jul 2020 08:41:22 +0000 From: "Wang, Haiyue" To: "Sun, Chenmin" , "Zhang, Qi Z" , "Xing, Beilei" , "Wu, Jingjing" CC: "dev@dpdk.org" , "Sun, Chenmin" Thread-Topic: [dpdk-dev] [PATCH] net/i40e: i40e FDIR update rate optimization Thread-Index: AQHWQJhW9pwTymH9yUGR+eRuHBZohaj9hVqA Date: Wed, 8 Jul 2020 08:41:22 +0000 Message-ID: References: <20200612180015.14760-1-chenmin.sun@intel.com> In-Reply-To: <20200612180015.14760-1-chenmin.sun@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 authentication-results: intel.com; dkim=none (message not signed) header.d=none;intel.com; dmarc=none action=none header.from=intel.com; x-originating-ip: [192.102.204.38] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 65124da1-d960-44a6-3c06-08d8231ab186 x-ms-traffictypediagnostic: BN6PR1101MB2259: x-ld-processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6790; 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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: BN8PR11MB3795.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 65124da1-d960-44a6-3c06-08d8231ab186 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Jul 2020 08:41:22.3443 (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: dgrAb+2WLn9RRiBOJ4RWQ+F0PCx9WXYdlBd6gwkvPsHHBmrdbKt5Ag43c5lIS7hf0NWnXlzkhhMIak4DOuZDRA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1101MB2259 X-OriginatorOrg: intel.com Subject: Re: [dpdk-dev] [PATCH] net/i40e: i40e FDIR update rate optimization 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" > -----Original Message----- > From: dev On Behalf Of chenmin.sun@intel.com > Sent: Saturday, June 13, 2020 02:00 > To: Zhang, Qi Z ; Xing, Beilei ; Wu, Jingjing > > Cc: dev@dpdk.org; Sun, Chenmin > Subject: [dpdk-dev] [PATCH] net/i40e: i40e FDIR update rate optimization >=20 > From: Chenmin Sun >=20 > This patch optimized the fdir update rate for i40e PF, by tracking the > fdir rule will be inserted into guaranteed space or shared space. > For the flows that are inserted to the guaranteed space, it returns succe= ss > directly without retrieving the result for NIC. >=20 > This patch changes the global register GLQF_CTL. Therefore, when devarg > ``Support multiple driver`` is set, the patch will not take effect to > avoid affecting the normal behavior of other i40e drivers, e.g., Linux > kernel driver. >=20 > Signed-off-by: Chenmin Sun > --- > drivers/net/i40e/i40e_ethdev.c | 96 ++++++++++++++++- > drivers/net/i40e/i40e_ethdev.h | 57 +++++++--- > drivers/net/i40e/i40e_fdir.c | 182 +++++++++++++++++++++----------- > drivers/net/i40e/i40e_flow.c | 181 +++++++++++++++++++++++++------ > drivers/net/i40e/i40e_rxtx.c | 15 ++- > drivers/net/i40e/rte_pmd_i40e.c | 2 +- > 6 files changed, 417 insertions(+), 116 deletions(-) >=20 >=20 > +static > +uint32_t bin_search(uint64_t data) > +{ > + uint32_t pos =3D 0; > + > + if ((data & 0xFFFFFFFF) =3D=3D 0) { > + data >>=3D 32; > + pos +=3D 32; > + } > + > + if ((data & 0xFFFF) =3D=3D 0) { > + data >>=3D 16; > + pos +=3D 16; > + } > + if ((data & 0xFF) =3D=3D 0) { > + data >>=3D 8; > + pos +=3D 8; > + } > + if ((data & 0xF) =3D=3D 0) { > + data >>=3D 4; > + pos +=3D 4; > + } > + if ((data & 0x3) =3D=3D 0) { > + data >>=3D 2; > + pos +=3D 2; > + } > + if ((data & 0x1) =3D=3D 0) > + pos +=3D 1; > + > + return pos; > +} > + Try " __builtin_ctzll ", DPDK has many examples to use it. ;-) > -- > 2.17.1