From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D0ABC433EF for ; Mon, 13 Dec 2021 13:18:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233590AbhLMNSd (ORCPT ); Mon, 13 Dec 2021 08:18:33 -0500 Received: from mga07.intel.com ([134.134.136.100]:60600 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233448AbhLMNSc (ORCPT ); Mon, 13 Dec 2021 08:18:32 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10196"; a="302109742" X-IronPort-AV: E=Sophos;i="5.88,202,1635231600"; d="scan'208";a="302109742" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Dec 2021 05:18:32 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,202,1635231600"; d="scan'208";a="517745960" Received: from intel-obmc.bj.intel.com (HELO intel-71.bj.intel.com) ([10.238.154.71]) by orsmga008.jf.intel.com with ESMTP; 13 Dec 2021 05:18:30 -0800 From: yanjun.zhu@linux.dev To: mustafa.ismail@intel.com, shiraz.saleem@intel.com, dledford@redhat.com, jgg@ziepe.ca, linux-rdma@vger.kernel.org, yanjun.zhu@linux.dev Subject: [PATCH 1/1] RDMA/irdma: Make the source udp port vary Date: Tue, 14 Dec 2021 00:42:27 -0500 Message-Id: <20211214054227.1071338-1-yanjun.zhu@linux.dev> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Zhu Yanjun Based on the link https://www.spinics.net/lists/linux-rdma/msg73735.html, get the source udp port number for a QP based on the local QPN. This provides a better spread of traffic across NIC RX queues. The method in the commit d3c04a3a6870 ("IB/rxe: vary the source udp port for receive scaling") is stable. So it is also adopted in this commit. Signed-off-by: Zhu Yanjun --- drivers/infiniband/hw/irdma/verbs.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c index 102dc9342f2a..2697b40a539e 100644 --- a/drivers/infiniband/hw/irdma/verbs.c +++ b/drivers/infiniband/hw/irdma/verbs.c @@ -690,6 +690,11 @@ static int irdma_cqp_create_qp_cmd(struct irdma_qp *iwqp) return status ? -ENOMEM : 0; } +static inline u16 irdma_get_src_port(struct irdma_qp *iwqp) +{ + return 0xc000 + (hash_32_generic(iwqp->ibqp.qp_num, 14) & 0x3fff); +} + static void irdma_roce_fill_and_set_qpctx_info(struct irdma_qp *iwqp, struct irdma_qp_host_ctx_info *ctx_info) { @@ -703,7 +708,7 @@ static void irdma_roce_fill_and_set_qpctx_info(struct irdma_qp *iwqp, udp_info->cwnd = iwdev->roce_cwnd; udp_info->rexmit_thresh = 2; udp_info->rnr_nak_thresh = 2; - udp_info->src_port = 0xc000; + udp_info->src_port = irdma_get_src_port(iwqp); udp_info->dst_port = ROCE_V2_UDP_DPORT; roce_info = &iwqp->roce_info; ether_addr_copy(roce_info->mac_addr, iwdev->netdev->dev_addr); -- 2.27.0