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Thu, 21 Mar 2019 06:04:15 +0000 From: Shahaf Shuler To: Konstantin Ananyev , "dev@dpdk.org" CC: "akhil.goyal@nxp.com" , "olivier.matz@6wind.com" Thread-Topic: [dpdk-dev] [PATCH v2 1/7] mbuf: new function to generate raw Tx offload value Thread-Index: AQHU301eRkXiwz4wLkOrnPWxVqiVIaYVmF8w Date: Thu, 21 Mar 2019 06:04:15 +0000 Message-ID: References: <1551381661-21078-1-git-send-email-konstantin.ananyev@intel.com> <20190320184655.17004-1-konstantin.ananyev@intel.com> <20190320184655.17004-2-konstantin.ananyev@intel.com> In-Reply-To: <20190320184655.17004-2-konstantin.ananyev@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=shahafs@mellanox.com; x-originating-ip: [31.154.10.105] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: eb7ee6c7-c08e-4a1e-b34c-08d6adc30c7b x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020); 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: eb7ee6c7-c08e-4a1e-b34c-08d6adc30c7b X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Mar 2019 06:04:15.8384 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR0502MB4035 Subject: Re: [dpdk-dev] [PATCH v2 1/7] mbuf: new function to generate raw Tx offload value 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: Thu, 21 Mar 2019 06:04:25 -0000 Hi Konstantin, Wednesday, March 20, 2019 8:47 PM, Konstantin Ananyev: > Subject: [dpdk-dev] [PATCH v2 1/7] mbuf: new function to generate raw Tx > offload value >=20 > Operations to set/update bit-fields often cause compilers to generate > suboptimal code. > To help avoid such situation for tx_offload fields: > introduce new enum for tx_offload bit-fields lengths and offsets, and new > function to generate raw tx_offload value. >=20 > Signed-off-by: Konstantin Ananyev > --- > lib/librte_mbuf/rte_mbuf.h | 71 > ++++++++++++++++++++++++++++++++++---- > 1 file changed, 64 insertions(+), 7 deletions(-) >=20 > diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h inde= x > d961ccaf6..b967ad17e 100644 > --- a/lib/librte_mbuf/rte_mbuf.h > +++ b/lib/librte_mbuf/rte_mbuf.h > @@ -479,6 +479,26 @@ struct rte_mbuf_sched { > uint16_t reserved; /**< Reserved. */ > }; /**< Hierarchical scheduler */ >=20 > +/** enum for the tx_offload bit-fields lenghts and offsets. */ enum { > + RTE_MBUF_L2_LEN_BITS =3D 7, > + RTE_MBUF_L3_LEN_BITS =3D 9, > + RTE_MBUF_L4_LEN_BITS =3D 8, > + RTE_MBUF_TSO_SEGSZ_BITS =3D 16, > + RTE_MBUF_OL3_LEN_BITS =3D 9, > + RTE_MBUF_OL2_LEN_BITS =3D 7, > + RTE_MBUF_L2_LEN_OFS =3D 0, > + RTE_MBUF_L3_LEN_OFS =3D RTE_MBUF_L2_LEN_OFS + > RTE_MBUF_L2_LEN_BITS, > + RTE_MBUF_L4_LEN_OFS =3D RTE_MBUF_L3_LEN_OFS + > RTE_MBUF_L3_LEN_BITS, > + RTE_MBUF_TSO_SEGSZ_OFS =3D RTE_MBUF_L4_LEN_OFS + > RTE_MBUF_L4_LEN_BITS, > + RTE_MBUF_OL3_LEN_OFS =3D RTE_MBUF_TSO_SEGSZ_OFS + > RTE_MBUF_TSO_SEGSZ_BITS, > + RTE_MBUF_OL2_LEN_OFS =3D RTE_MBUF_OL3_LEN_OFS + > RTE_MBUF_OL3_LEN_BITS, > + RTE_MBUF_TXOFLD_UNUSED_OFS =3D > + RTE_MBUF_OL2_LEN_OFS + RTE_MBUF_OL2_LEN_BITS, > + RTE_MBUF_TXOFLD_UNUSED_BITS =3D > + sizeof(uint64_t) * CHAR_BIT - > RTE_MBUF_TXOFLD_UNUSED_OFS, }; > + > /** > * The generic rte_mbuf, containing a packet mbuf. > */ > @@ -640,19 +660,24 @@ struct rte_mbuf { > uint64_t tx_offload; /**< combined for easy fetch */ > __extension__ > struct { > - uint64_t l2_len:7; > + uint64_t l2_len:RTE_MBUF_L2_LEN_BITS; > /**< L2 (MAC) Header Length for non-tunneling pkt. > * Outer_L4_len + ... + Inner_L2_len for tunneling > pkt. > */ > - uint64_t l3_len:9; /**< L3 (IP) Header Length. */ > - uint64_t l4_len:8; /**< L4 (TCP/UDP) Header Length. > */ > - uint64_t tso_segsz:16; /**< TCP TSO segment size */ > + uint64_t l3_len:RTE_MBUF_L3_LEN_BITS; > + /**< L3 (IP) Header Length. */ > + uint64_t l4_len:RTE_MBUF_L4_LEN_BITS; > + /**< L4 (TCP/UDP) Header Length. */ > + uint64_t tso_segsz:RTE_MBUF_TSO_SEGSZ_BITS; > + /**< TCP TSO segment size */ >=20 > /* fields for TX offloading of tunnels */ > - uint64_t outer_l3_len:9; /**< Outer L3 (IP) Hdr > Length. */ > - uint64_t outer_l2_len:7; /**< Outer L2 (MAC) Hdr > Length. */ > + uint64_t outer_l3_len:RTE_MBUF_OL3_LEN_BITS; > + /**< Outer L3 (IP) Hdr Length. */ > + uint64_t outer_l2_len:RTE_MBUF_OL2_LEN_BITS; > + /**< Outer L2 (MAC) Hdr Length. */ >=20 > - /* uint64_t unused:8; */ > + /* uint64_t > unused:RTE_MBUF_TXOFLD_UNUSED_BITS; */ I am not sure we want to decide now that this remaining byte is for another= Tx offloads. Maybe it is better to change a bit the rte_mbuf_tx_offload API to receive a= lso the mbuf and to assign the offload values w/ mask.=20 > }; > }; >=20 > @@ -2243,6 +2268,38 @@ static inline int rte_pktmbuf_chain(struct > rte_mbuf *head, struct rte_mbuf *tail > return 0; > } >=20 > +/* > + * @warning > + * @b EXPERIMENTAL: This API may change without prior notice. > + * > + * For given input values generate raw tx_offload value. > + * @param il2 > + * l2_len value. > + * @param il3 > + * l3_len value. > + * @param il4 > + * l4_len value. > + * @param tso > + * tso_segsz value. > + * @param ol3 > + * outer_l3_len value. > + * @param ol2 > + * outer_l2_len value. > + * @return > + * raw tx_offload value. > + */ > +static inline uint64_t > +rte_mbuf_tx_offload(uint64_t il2, uint64_t il3, uint64_t il4, uint64_t t= so, > + uint64_t ol3, uint64_t ol2) > +{ > + return il2 << RTE_MBUF_L2_LEN_OFS | > + il3 << RTE_MBUF_L3_LEN_OFS | > + il4 << RTE_MBUF_L4_LEN_OFS | > + tso << RTE_MBUF_TSO_SEGSZ_OFS | > + ol3 << RTE_MBUF_OL3_LEN_OFS | > + ol2 << RTE_MBUF_OL2_LEN_OFS; > +} > + > /** > * Validate general requirements for Tx offload in mbuf. > * > -- > 2.17.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 6A4EEA00E6 for ; Thu, 21 Mar 2019 07:04:26 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 75FB51B3BC; Thu, 21 Mar 2019 07:04:25 +0100 (CET) Received: from EUR01-HE1-obe.outbound.protection.outlook.com (mail-eopbgr130079.outbound.protection.outlook.com [40.107.13.79]) by dpdk.org (Postfix) with ESMTP id C781F1B3BA for ; Thu, 21 Mar 2019 07:04:24 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=b3uqpiBOpwfsnwPg2TiUyh4dlEk4yU7g6g5v2EYYp5k=; b=lkZQ7hQSTK/e0p7FvnrAq/uJaEC4O8wulJOL5aAG5asydhjJuq4qXkRKhO89OAlghagR+00bzo4ciZDkjLmKhwB6+3uvcwqLoqjqlCRSWosSRWLTLlQhCBcKKiVQKftEi5mPH5CDoTtU0X42krZzIzG8iT8QEdanFJHBjqFyTfM= Received: from AM0PR0502MB3795.eurprd05.prod.outlook.com (52.133.45.150) by AM0PR0502MB4035.eurprd05.prod.outlook.com (52.133.36.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1709.13; Thu, 21 Mar 2019 06:04:15 +0000 Received: from AM0PR0502MB3795.eurprd05.prod.outlook.com ([fe80::84f3:7e92:7a51:1003]) by AM0PR0502MB3795.eurprd05.prod.outlook.com ([fe80::84f3:7e92:7a51:1003%2]) with mapi id 15.20.1730.013; Thu, 21 Mar 2019 06:04:15 +0000 From: Shahaf Shuler To: Konstantin Ananyev , "dev@dpdk.org" CC: "akhil.goyal@nxp.com" , "olivier.matz@6wind.com" Thread-Topic: [dpdk-dev] [PATCH v2 1/7] mbuf: new function to generate raw Tx offload value Thread-Index: AQHU301eRkXiwz4wLkOrnPWxVqiVIaYVmF8w Date: Thu, 21 Mar 2019 06:04:15 +0000 Message-ID: References: <1551381661-21078-1-git-send-email-konstantin.ananyev@intel.com> <20190320184655.17004-1-konstantin.ananyev@intel.com> <20190320184655.17004-2-konstantin.ananyev@intel.com> In-Reply-To: <20190320184655.17004-2-konstantin.ananyev@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=shahafs@mellanox.com; x-originating-ip: [31.154.10.105] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: eb7ee6c7-c08e-4a1e-b34c-08d6adc30c7b x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020); SRVR:AM0PR0502MB4035; x-ms-traffictypediagnostic: AM0PR0502MB4035: x-microsoft-antispam-prvs: x-forefront-prvs: 0983EAD6B2 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(39860400002)(346002)(136003)(396003)(376002)(366004)(189003)(199004)(86362001)(68736007)(486006)(106356001)(6116002)(2906002)(25786009)(6436002)(105586002)(7736002)(14454004)(11346002)(97736004)(305945005)(186003)(229853002)(74316002)(256004)(14444005)(66066001)(446003)(71200400001)(476003)(71190400001)(52536014)(81156014)(102836004)(6246003)(2501003)(5660300002)(9686003)(76176011)(3846002)(8936002)(53936002)(55016002)(478600001)(7696005)(33656002)(54906003)(26005)(81166006)(6506007)(4326008)(110136005)(99286004)(316002); DIR:OUT; SFP:1101; SCL:1; SRVR:AM0PR0502MB4035; H:AM0PR0502MB3795.eurprd05.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:3; A:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: VU/ib98bbKNCkKFTh9+mu2aNKg+4sWRT2zbf3c3W4wYHf8yvVYdhcsaNesKJ/qbSB5a0UMBGPK1nlRGZRE+b2yKhHmEPufrvUQUItAORYBtQ6cTf71QnS7SbahWHdXanBRzZQC64pV/Fi1l0nnLbaNfZHhqZYK/fRfyoLcLwmXojDfMpswFbL0Dl99gPZ4RPAwmFiZWIjwojvy2kaWbaM1OvUCJegZCc6ykCRSoOgQhoRtISsrhc8xznGaiw8J3y24GBwheYwY/7o73WHqRUCMZ616jk4eeGd9QVZEeH5sIJAkngw4qi0DWdAF0G/sudNDvy4REVhR75M4n232c15ydJBNSa6spa0cPD8P+bOaJHZTvcHnZAw4jGNoNK+zWAoVTfNyQ8zmKKSSlS6la+uSJHD7dJv7t4ahnIcftCC8w= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: eb7ee6c7-c08e-4a1e-b34c-08d6adc30c7b X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Mar 2019 06:04:15.8384 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR0502MB4035 Subject: Re: [dpdk-dev] [PATCH v2 1/7] mbuf: new function to generate raw Tx offload value 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: <20190321060415.hAKz7aIN1-uzKJRZmThGFs-l_Mg47qITkVIRZtslDEM@z> Hi Konstantin, Wednesday, March 20, 2019 8:47 PM, Konstantin Ananyev: > Subject: [dpdk-dev] [PATCH v2 1/7] mbuf: new function to generate raw Tx > offload value >=20 > Operations to set/update bit-fields often cause compilers to generate > suboptimal code. > To help avoid such situation for tx_offload fields: > introduce new enum for tx_offload bit-fields lengths and offsets, and new > function to generate raw tx_offload value. >=20 > Signed-off-by: Konstantin Ananyev > --- > lib/librte_mbuf/rte_mbuf.h | 71 > ++++++++++++++++++++++++++++++++++---- > 1 file changed, 64 insertions(+), 7 deletions(-) >=20 > diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h inde= x > d961ccaf6..b967ad17e 100644 > --- a/lib/librte_mbuf/rte_mbuf.h > +++ b/lib/librte_mbuf/rte_mbuf.h > @@ -479,6 +479,26 @@ struct rte_mbuf_sched { > uint16_t reserved; /**< Reserved. */ > }; /**< Hierarchical scheduler */ >=20 > +/** enum for the tx_offload bit-fields lenghts and offsets. */ enum { > + RTE_MBUF_L2_LEN_BITS =3D 7, > + RTE_MBUF_L3_LEN_BITS =3D 9, > + RTE_MBUF_L4_LEN_BITS =3D 8, > + RTE_MBUF_TSO_SEGSZ_BITS =3D 16, > + RTE_MBUF_OL3_LEN_BITS =3D 9, > + RTE_MBUF_OL2_LEN_BITS =3D 7, > + RTE_MBUF_L2_LEN_OFS =3D 0, > + RTE_MBUF_L3_LEN_OFS =3D RTE_MBUF_L2_LEN_OFS + > RTE_MBUF_L2_LEN_BITS, > + RTE_MBUF_L4_LEN_OFS =3D RTE_MBUF_L3_LEN_OFS + > RTE_MBUF_L3_LEN_BITS, > + RTE_MBUF_TSO_SEGSZ_OFS =3D RTE_MBUF_L4_LEN_OFS + > RTE_MBUF_L4_LEN_BITS, > + RTE_MBUF_OL3_LEN_OFS =3D RTE_MBUF_TSO_SEGSZ_OFS + > RTE_MBUF_TSO_SEGSZ_BITS, > + RTE_MBUF_OL2_LEN_OFS =3D RTE_MBUF_OL3_LEN_OFS + > RTE_MBUF_OL3_LEN_BITS, > + RTE_MBUF_TXOFLD_UNUSED_OFS =3D > + RTE_MBUF_OL2_LEN_OFS + RTE_MBUF_OL2_LEN_BITS, > + RTE_MBUF_TXOFLD_UNUSED_BITS =3D > + sizeof(uint64_t) * CHAR_BIT - > RTE_MBUF_TXOFLD_UNUSED_OFS, }; > + > /** > * The generic rte_mbuf, containing a packet mbuf. > */ > @@ -640,19 +660,24 @@ struct rte_mbuf { > uint64_t tx_offload; /**< combined for easy fetch */ > __extension__ > struct { > - uint64_t l2_len:7; > + uint64_t l2_len:RTE_MBUF_L2_LEN_BITS; > /**< L2 (MAC) Header Length for non-tunneling pkt. > * Outer_L4_len + ... + Inner_L2_len for tunneling > pkt. > */ > - uint64_t l3_len:9; /**< L3 (IP) Header Length. */ > - uint64_t l4_len:8; /**< L4 (TCP/UDP) Header Length. > */ > - uint64_t tso_segsz:16; /**< TCP TSO segment size */ > + uint64_t l3_len:RTE_MBUF_L3_LEN_BITS; > + /**< L3 (IP) Header Length. */ > + uint64_t l4_len:RTE_MBUF_L4_LEN_BITS; > + /**< L4 (TCP/UDP) Header Length. */ > + uint64_t tso_segsz:RTE_MBUF_TSO_SEGSZ_BITS; > + /**< TCP TSO segment size */ >=20 > /* fields for TX offloading of tunnels */ > - uint64_t outer_l3_len:9; /**< Outer L3 (IP) Hdr > Length. */ > - uint64_t outer_l2_len:7; /**< Outer L2 (MAC) Hdr > Length. */ > + uint64_t outer_l3_len:RTE_MBUF_OL3_LEN_BITS; > + /**< Outer L3 (IP) Hdr Length. */ > + uint64_t outer_l2_len:RTE_MBUF_OL2_LEN_BITS; > + /**< Outer L2 (MAC) Hdr Length. */ >=20 > - /* uint64_t unused:8; */ > + /* uint64_t > unused:RTE_MBUF_TXOFLD_UNUSED_BITS; */ I am not sure we want to decide now that this remaining byte is for another= Tx offloads. Maybe it is better to change a bit the rte_mbuf_tx_offload API to receive a= lso the mbuf and to assign the offload values w/ mask.=20 > }; > }; >=20 > @@ -2243,6 +2268,38 @@ static inline int rte_pktmbuf_chain(struct > rte_mbuf *head, struct rte_mbuf *tail > return 0; > } >=20 > +/* > + * @warning > + * @b EXPERIMENTAL: This API may change without prior notice. > + * > + * For given input values generate raw tx_offload value. > + * @param il2 > + * l2_len value. > + * @param il3 > + * l3_len value. > + * @param il4 > + * l4_len value. > + * @param tso > + * tso_segsz value. > + * @param ol3 > + * outer_l3_len value. > + * @param ol2 > + * outer_l2_len value. > + * @return > + * raw tx_offload value. > + */ > +static inline uint64_t > +rte_mbuf_tx_offload(uint64_t il2, uint64_t il3, uint64_t il4, uint64_t t= so, > + uint64_t ol3, uint64_t ol2) > +{ > + return il2 << RTE_MBUF_L2_LEN_OFS | > + il3 << RTE_MBUF_L3_LEN_OFS | > + il4 << RTE_MBUF_L4_LEN_OFS | > + tso << RTE_MBUF_TSO_SEGSZ_OFS | > + ol3 << RTE_MBUF_OL3_LEN_OFS | > + ol2 << RTE_MBUF_OL2_LEN_OFS; > +} > + > /** > * Validate general requirements for Tx offload in mbuf. > * > -- > 2.17.1