From owner-svn-src-all@freebsd.org Thu Apr 7 07:35:04 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 08BDDB0708C; Thu, 7 Apr 2016 07:35:04 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C96D51D15; Thu, 7 Apr 2016 07:35:03 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u377Z29O079165; Thu, 7 Apr 2016 07:35:02 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u377Z2Eb079163; Thu, 7 Apr 2016 07:35:02 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201604070735.u377Z2Eb079163@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Thu, 7 Apr 2016 07:35:02 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r297651 - stable/10/sys/ofed/drivers/net/mlx4 X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2016 07:35:04 -0000 Author: hselasky Date: Thu Apr 7 07:35:02 2016 New Revision: 297651 URL: https://svnweb.freebsd.org/changeset/base/297651 Log: MFC r296910: Use hardware computed Toeplitz hash for incoming flowids Use the Toeplitz hash value as source for the flowid. This makes the hash value more suitable for so-called hash bucket algorithms which are used in the FreeBSD's TCP/IP stack when RSS is enabled. Sponsored by: Mellanox Technologies Modified: stable/10/sys/ofed/drivers/net/mlx4/en_rx.c stable/10/sys/ofed/drivers/net/mlx4/en_tx.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/ofed/drivers/net/mlx4/en_rx.c ============================================================================== --- stable/10/sys/ofed/drivers/net/mlx4/en_rx.c Thu Apr 7 07:33:40 2016 (r297650) +++ stable/10/sys/ofed/drivers/net/mlx4/en_rx.c Thu Apr 7 07:35:02 2016 (r297651) @@ -616,7 +616,8 @@ int mlx4_en_process_rx_cq(struct net_dev goto next; } - mb->m_pkthdr.flowid = cq->ring; + /* forward Toeplitz compatible hash value */ + mb->m_pkthdr.flowid = be32_to_cpu(cqe->immed_rss_invalid); M_HASHTYPE_SET(mb, M_HASHTYPE_OPAQUE); mb->m_pkthdr.rcvif = dev; if (be32_to_cpu(cqe->vlan_my_qpn) & Modified: stable/10/sys/ofed/drivers/net/mlx4/en_tx.c ============================================================================== --- stable/10/sys/ofed/drivers/net/mlx4/en_tx.c Thu Apr 7 07:33:40 2016 (r297650) +++ stable/10/sys/ofed/drivers/net/mlx4/en_tx.c Thu Apr 7 07:35:02 2016 (r297651) @@ -1057,7 +1057,7 @@ mlx4_en_transmit(struct ifnet *dev, stru /* Compute which queue to use */ if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) { - i = m->m_pkthdr.flowid % priv->tx_ring_num; + i = (m->m_pkthdr.flowid % 128) % priv->tx_ring_num; } else { i = mlx4_en_select_queue(dev, m);