From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 3C6FB68B5 for ; Mon, 13 Oct 2014 16:30:56 +0200 (CEST) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP; 13 Oct 2014 07:38:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="399444697" Received: from gklab-18-011.igk.intel.com ([10.102.18.11]) by FMSMGA003.fm.intel.com with ESMTP; 13 Oct 2014 07:31:28 -0700 From: miroslaw.walukiewicz@intel.com To: dev@dpdk.org Date: Mon, 13 Oct 2014 10:38:34 -0400 Message-ID: <20141013143834.19211.44077.stgit@gklab-18-011.igk.intel.com> User-Agent: StGit/0.17-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [dpdk-dev] [PATCH 1/3] pmd: add new flag to indicate TX TSO operation on the packet X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Oct 2014 14:30:56 -0000 From: Miroslaw Walukiewicz Transmission of TCP packets could be accelerated by HW Transmit Segmentation Offload. With TSO packets up to 64K could be transmismitted. When this flag is set the PMD drived will enable TCP segmentation. The new field tso_segsz is added to indicate how long is TCP TSO segment. Signed-off-by: Mirek Walukiewicz --- lib/librte_mbuf/rte_mbuf.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index ddadc21..63cbc36 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -117,6 +117,9 @@ extern "C" { /* Use final bit of flags to indicate a control mbuf */ #define CTRL_MBUF_FLAG (1ULL << 63) /**< Mbuf contains control data */ +/* Bit 50 - TSO (TCP Transmit Segmenation Offload) */ +#define PKT_TX_TCP_TSO (1ULL << 50) /**< Mbuf needs TSO enabling */ + /** * Bit Mask to indicate what bits required for building TX context */ @@ -196,6 +199,8 @@ struct rte_mbuf { uint16_t l2_len:7; /**< L2 (MAC) Header Length. */ }; }; + /* field to support TSO segment size */ + uint32_t tso_segsz; } __rte_cache_aligned; /**