From patchwork Fri Nov 4 16:36:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Salil Mehta X-Patchwork-Id: 80882 Delivered-To: patch@linaro.org Received: by 10.80.170.210 with SMTP id r18csp1227501edc; Fri, 4 Nov 2016 09:38:35 -0700 (PDT) X-Received: by 10.98.65.156 with SMTP id g28mr28159161pfd.110.1478277514934; Fri, 04 Nov 2016 09:38:34 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g6si17481413pfa.52.2016.11.04.09.38.34; Fri, 04 Nov 2016 09:38:34 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965001AbcKDQi3 (ORCPT + 27 others); Fri, 4 Nov 2016 12:38:29 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:32405 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964941AbcKDQi1 (ORCPT ); Fri, 4 Nov 2016 12:38:27 -0400 Received: from 172.24.1.47 (EHLO szxeml432-hub.china.huawei.com) ([172.24.1.47]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DUO02511; Sat, 05 Nov 2016 00:38:13 +0800 (CST) Received: from S00293818-DELL1.china.huawei.com (10.203.181.154) by szxeml432-hub.china.huawei.com (10.82.67.209) with Microsoft SMTP Server id 14.3.235.1; Sat, 5 Nov 2016 00:38:06 +0800 From: Salil Mehta To: CC: , , , , , , , Subject: [PATCH for-next 05/11] IB/hns: Modify the condition of notifying hardware loopback Date: Fri, 4 Nov 2016 16:36:27 +0000 Message-ID: <20161104163633.141880-6-salil.mehta@huawei.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20161104163633.141880-1-salil.mehta@huawei.com> References: <20161104163633.141880-1-salil.mehta@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.203.181.154] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lijun Ou This patch modified the condition of notifying hardware loopback. In hip06, RoCE Engine has several ports, one QP is related to one port. hardware only support loopback in the same port, not in the different ports. So, If QP related to port N, the dmac in the QP context equals the smac of the local port N or the loop_idc is 1, we should set loopback bit in QP context to notify hardware. Signed-off-by: Wei Hu (Xavier) Signed-off-by: Lijun Ou Signed-off-by: Salil Mehta --- drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) -- 1.7.9.5 diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c index d6df6dd..8ca36a7 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c @@ -2244,24 +2244,14 @@ static int hns_roce_v1_m_qp(struct ib_qp *ibqp, const struct ib_qp_attr *attr, QP_CONTEXT_QPC_BYTE_32_SIGNALING_TYPE_S, hr_qp->sq_signal_bits); - for (port = 0; port < hr_dev->caps.num_ports; port++) { - smac = (u8 *)hr_dev->dev_addr[port]; - dev_dbg(dev, "smac: %2x: %2x: %2x: %2x: %2x: %2x\n", - smac[0], smac[1], smac[2], smac[3], smac[4], - smac[5]); - if ((dmac[0] == smac[0]) && (dmac[1] == smac[1]) && - (dmac[2] == smac[2]) && (dmac[3] == smac[3]) && - (dmac[4] == smac[4]) && (dmac[5] == smac[5])) { - roce_set_bit(context->qpc_bytes_32, - QP_CONTEXT_QPC_BYTE_32_LOOPBACK_INDICATOR_S, - 1); - break; - } - } - - if (hr_dev->loop_idc == 0x1) + port = (attr_mask & IB_QP_PORT) ? (attr->port_num - 1) : + hr_qp->port; + smac = (u8 *)hr_dev->dev_addr[port]; + /* when dmac equals smac or loop_idc is 1, it should loopback */ + if (ether_addr_equal_unaligned(dmac, smac) || + hr_dev->loop_idc == 0x1) roce_set_bit(context->qpc_bytes_32, - QP_CONTEXT_QPC_BYTE_32_LOOPBACK_INDICATOR_S, 1); + QP_CONTEXT_QPC_BYTE_32_LOOPBACK_INDICATOR_S, 1); roce_set_bit(context->qpc_bytes_32, QP_CONTEXT_QPC_BYTE_32_GLOBAL_HEADER_S,