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a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1604248718; bh=o7CZkz1hkNEM7/WToqC5NzZDou1bJ2x+yBxPosZ8cRk=; h=ARC-Seal:ARC-Message-Signature:ARC-Authentication-Results:From:To: CC:Subject:Thread-Topic:Thread-Index:Date:Message-ID:References: In-Reply-To:Accept-Language:Content-Language:X-MS-Has-Attach: X-MS-TNEF-Correlator:authentication-results:x-originating-ip: x-ms-publictraffictype:x-ms-office365-filtering-correlation-id: x-ms-traffictypediagnostic:x-ms-exchange-transport-forked: x-microsoft-antispam-prvs:x-ms-oob-tlc-oobclassifiers: x-ms-exchange-senderadcheck:x-microsoft-antispam: x-microsoft-antispam-message-info:x-forefront-antispam-report: x-ms-exchange-antispam-messagedata:Content-Type: Content-Transfer-Encoding:MIME-Version: X-MS-Exchange-CrossTenant-AuthAs: X-MS-Exchange-CrossTenant-AuthSource: X-MS-Exchange-CrossTenant-Network-Message-Id: X-MS-Exchange-CrossTenant-originalarrivaltime: X-MS-Exchange-CrossTenant-fromentityheader: X-MS-Exchange-CrossTenant-id:X-MS-Exchange-CrossTenant-mailboxtype: X-MS-Exchange-CrossTenant-userprincipalname: X-MS-Exchange-Transport-CrossTenantHeadersStamped:X-OriginatorOrg; b=TCDRkt8UbTXK4sbpekfV8jb+LewV8+OslhZ+RRb+cKv81FI4eaVSARpRqRMXjEiVh FFCSuWkc/Mq4cWC3R7srUbtY/tLE7Zgai90v1+LFneetRFYmk48Gbqd0JHEXZIMXfB asasv3kxPTcKXbyTyDUavl/3P9JZI0Hlz0mHC4DBEBs1yNHDrusy7hX53yWPiamKSF c39BhpdGAF+I1lA6ZF9pkeW4RJuVBKTf5QJJXo6Z9iRWPKehrYKuNg8RlC0TUq6MwH uSdB/0i0+/SANi+9guip3JgQOMky0vXj+DkwhwuIfgJmcTuZRz/8q7OTnS9kgUN+rd l4vqbmuryiEeg== Subject: Re: [dpdk-dev] [PATCH v2] net/mlx5: support Flow Tag and Packet Header miniCQEs 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: Alexander Kozyrev > Sent: Sunday, November 1, 2020 18:28 > To: dev@dpdk.org > Cc: Raslan Darawsheh ; Slava Ovsiienko > ; Matan Azrad > Subject: [PATCH v2] net/mlx5: support Flow Tag and Packet Header miniCQEs >=20 > CQE compression allows us to save the PCI bandwidth and improve the > performance by compressing several CQEs together to a miniCQE. > But the miniCQE size is only 8 bytes and this limits the ability to succe= ssfully > keep the compression session in case of various traffic patterns. >=20 > The current miniCQE format only keeps the compression session alive in ca= se > of uniform traffic with the Hash RSS as the only difference. > There are requests to keep the compression session in case of tagged traf= fic by > RTE Flow Mark Id and mixed UDP/TCP and IPv4/IPv6 traffic. > Add 2 new miniCQE formats in order to achieve the best performance for > these traffic patterns: Flow Tag and Packet Header miniCQEs. >=20 > The existing rxq_cqe_comp_en devarg is modified to specify the desired > miniCQE format. Specifying 2 selects Flow Tag format for better compressi= on > rate in case of RTE Flow Mark traffic. > Specifying 3 selects Checksum format (existing format for MPRQ). > Specifying 4 selects L3/L4 Header format for better compression rate in c= ase of > mixed TCP/UDP and IPv4/IPv6 traffic. >=20 > Signed-off-by: Alexander Kozyrev Acked-by: Viacheslav Ovsiienko