From patchwork Tue Mar 8 16:36:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eli Cohen X-Patchwork-Id: 8535671 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A6FDBC0553 for ; Tue, 8 Mar 2016 16:37:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 99AE22015E for ; Tue, 8 Mar 2016 16:37:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BCFF9201D3 for ; Tue, 8 Mar 2016 16:37:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932481AbcCHQhm (ORCPT ); Tue, 8 Mar 2016 11:37:42 -0500 Received: from [193.47.165.129] ([193.47.165.129]:52310 "EHLO mellanox.co.il" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754255AbcCHQhj (ORCPT ); Tue, 8 Mar 2016 11:37:39 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from eli@mellanox.com) with ESMTPS (AES256-SHA encrypted); 8 Mar 2016 18:37:08 +0200 Received: from sw-mtx-012.mtx.labs.mlnx (sw-mtx-012.mtx.labs.mlnx [10.12.150.39]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id u28Gb7an031886; Tue, 8 Mar 2016 18:37:08 +0200 Received: from sw-mtx-012.mtx.labs.mlnx (localhost [127.0.0.1]) by sw-mtx-012.mtx.labs.mlnx (8.14.7/8.14.7) with ESMTP id u28Gb7cp017687; Tue, 8 Mar 2016 18:37:07 +0200 Received: (from eli@localhost) by sw-mtx-012.mtx.labs.mlnx (8.14.7/8.14.7/Submit) id u28Gb7Pe017686; Tue, 8 Mar 2016 18:37:07 +0200 From: Eli Cohen To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, liranl@mellanox.com, eitan@mellanox.com, Eli Cohen Subject: [PATCH rdma-next V2 04/10] IB/core: Support accessing SA in virtualized environment Date: Tue, 8 Mar 2016 18:36:52 +0200 Message-Id: <1457455018-17638-5-git-send-email-eli@mellanox.com> X-Mailer: git-send-email 2.7.2 In-Reply-To: <1457455018-17638-1-git-send-email-eli@mellanox.com> References: <1457455018-17638-1-git-send-email-eli@mellanox.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Per the ongoing standardisation process, when virtual HCAs are present in a network, traffic is routed based on a destination GID. In order to access the SA we use the well known SA GID. We also add a GRH required boolean field to the port attributes which is used to report to the verbs consumer whether this port is connected to a virtual network. We use this field to realize whether we need to create an address vector with GRH to access the subnet administrator. We clear the port attributes struct before calling the hardware driver to make sure the default remains that GRH is not required. Signed-off-by: Eli Cohen Reviewed-by: Or Gerlitz --- drivers/infiniband/core/sa_query.c | 5 +++++ include/rdma/ib_verbs.h | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index f334090bb612..4fb97df2caa5 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -886,6 +886,11 @@ static void update_sm_ah(struct work_struct *work) ah_attr.dlid = port_attr.sm_lid; ah_attr.sl = port_attr.sm_sl; ah_attr.port_num = port->port_num; + if (port_attr.grh_required) { + ah_attr.ah_flags = IB_AH_GRH; + ah_attr.grh.dgid.global.subnet_prefix = cpu_to_be64(port_attr.subnet_prefix); + ah_attr.grh.dgid.global.interface_id = cpu_to_be64(IB_SA_WELL_KNOWN_GUID); + } new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); if (IS_ERR(new_ah->ah)) { diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index b3646e30e25d..8add3db9a244 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -97,6 +97,10 @@ enum rdma_node_type { RDMA_NODE_USNIC_UDP, }; +enum { + IB_SA_WELL_KNOWN_GUID = 2, +}; + enum rdma_transport_type { RDMA_TRANSPORT_IB, RDMA_TRANSPORT_IWARP, @@ -510,6 +514,7 @@ struct ib_port_attr { u8 active_speed; u8 phys_state; u64 subnet_prefix; + bool grh_required; }; enum ib_device_modify_flags {