From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vlad Zolotarov Subject: [PATCH v2 0/6]: Add LRO support to ixgbe PMD Date: Thu, 5 Mar 2015 13:27:59 +0200 Message-ID: <1425554885-16901-1-git-send-email-vladz@cloudius-systems.com> To: dev-VfR2kkLFssw@public.gmane.org Return-path: List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" 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 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 (6): ixgbe: Cleanups ixgbe: Bug fix: Properly configure Rx CRC stripping for x540 devices ixgbe: Code refactoring ixgbe: Unify the rx_pkt_bulk callback initialization common_linuxapp: Added CONFIG_RTE_ETHDEV_LRO_SUPPORT option ixgbe: Add LRO support config/common_linuxapp | 1 + lib/librte_ether/rte_ethdev.h | 6 +- lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h | 1 + lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 22 +- lib/librte_pmd_ixgbe/ixgbe_ethdev.h | 5 + lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 869 +++++++++++++++++++++++++++----- lib/librte_pmd_ixgbe/ixgbe_rxtx.h | 26 +- 7 files changed, 798 insertions(+), 132 deletions(-) -- 2.1.0