From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f42.google.com (mail-wg0-f42.google.com [74.125.82.42]) by dpdk.org (Postfix) with ESMTP id 22D4C5FEB for ; Sun, 8 Mar 2015 15:05:03 +0100 (CET) Received: by wggx13 with SMTP id x13so22356442wgg.12 for ; Sun, 08 Mar 2015 07:05:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=eSz5Q8swvRgo1fUlPxmh4j3sWK9oJhEWvyMElxd8P/g=; b=mWAeUMnUtx66/gDtDFkY9me8bB9IyIOCuPEV8GmgOetD4KjfVE7uNEX6rW4QYCeN0v ny73spLRBvIO2Z0PhJCqrMag/wsB/t92he+JbAdH+Gc5Fr0GU27wlTf/F0x4uZNNjZlz 0NAuKzaqAOA5oGjnmCz6320WwKZR7S5lvxN8SrVgQsdMYEkWSKUD8p/uD5AJ8PVkdCx7 fHdlAFvxjmsjxS6S+cQs9kiDD8H00FRhT5wW5IGb40r/wGVVRDRj3QKoBLpown9rQVC3 JG4PVBeII5PpHBnrwA+J96ObYzGiPhGe2swaySRAK8k6vydn/deFDdO66e6/hQ7cQF+s VMyA== X-Gm-Message-State: ALoCoQlwNwTpBq5srW2DGndSjmScWsTGJo8xOuF3tTgQiPuUtmREQ7CyPq8fQH+Wjs9dTpatWdfK X-Received: by 10.180.74.202 with SMTP id w10mr23241111wiv.0.1425823502826; Sun, 08 Mar 2015 07:05:02 -0700 (PDT) Received: from vladz-laptop.cloudius-systems.com. ([212.143.139.214]) by mx.google.com with ESMTPSA id fo8sm11196154wib.14.2015.03.08.07.05.01 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 08 Mar 2015 07:05:01 -0700 (PDT) From: Vlad Zolotarov To: dev@dpdk.org Date: Sun, 8 Mar 2015 16:04:53 +0200 Message-Id: <1425823498-30385-1-git-send-email-vladz@cloudius-systems.com> X-Mailer: git-send-email 2.1.0 Subject: [dpdk-dev] [PATCH v4 0/5]: Add LRO support to ixgbe PMD 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: Sun, 08 Mar 2015 14:05:03 -0000 This series adds the missing flow for enabling the LRO in the ethdev and adds a support for this feature in the ixgbe PMD. There is a big hope that this initiative is going to be picked up by some Intel developer that would add the LRO support to other Intel PMDs. ;) The series starts with some cleanup work in the code the final patch (the actual adding of the LRO support) is going to touch/use/change. There are still quite a few issues in the ixgbe PMD code left but they have to be a matter of a different series and I've left a few "TODO" remarks in the code. The LRO ("RSC" in Intel's context) PMD completion handling code follows the same design as the corresponding Linux and FreeBSD implementation: pass the aggregation's cluster HEAD buffer to the NEXTP entry of the software ring till EOP is met. HW configuration follows the corresponding specs: this feature is supported only by x540 and 82599 PF devices. The feature has been tested with seastar TCP stack with the following configuration on Tx side: - MTU: 400B - 100 concurrent TCP connections. The results were: - Without LRO: total throughput: 0.12Gbps, coefficient of variance: 1.41% - With LRO: total throughput: 8.21Gbps, coefficient of variance: 0.59% This is an almost factor 80 improvement. New in v4: - Remove CONFIG_RTE_ETHDEV_LRO_SUPPORT from config/common_linuxapp. - Define RTE_ETHDEV_HAS_LRO_SUPPORT in rte_ethdev.h. - As a result of "ixgbe: check rxd number to avoid mbuf leak" (352078e8e) Vector Rx had to get the same treatment as Rx Bulk Alloc (see PATCH4 for more details). New in v3: - ixgbe_rx_alloc_bufs(): Always reset refcnt of the buffers to 1. Otherwise rte_pktmbuf_free() won't free them. New in v2: - Removed rte_eth_dev_data.lro_bulk_alloc and added ixgbe_hw.rx_bulk_alloc_allowed instead. - Unified the rx_pkt_bulk callback setting (a separate new patch). - Fixed a few styling and spelling issues. Vlad Zolotarov (5): ixgbe: Cleanups ixgbe: Bug fix: Properly configure Rx CRC stripping for x540 devices ixgbe: Code refactoring ixgbe: Unify the rx_pkt_bulk callback initialization ixgbe: Add LRO support lib/librte_ether/rte_ethdev.h | 9 +- lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h | 2 + lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 19 +- lib/librte_pmd_ixgbe/ixgbe_ethdev.h | 5 + lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 886 +++++++++++++++++++++++++++----- lib/librte_pmd_ixgbe/ixgbe_rxtx.h | 28 +- 6 files changed, 815 insertions(+), 134 deletions(-) -- 2.1.0