From patchwork Mon Jul 27 08:42:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Wang X-Patchwork-Id: 6613 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 58D9FC44C; Mon, 27 Jul 2015 10:43:17 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 688CCC54E for ; Mon, 27 Jul 2015 10:43:13 +0200 (CEST) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP; 27 Jul 2015 01:43:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,552,1432623600"; d="scan'208";a="530717479" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by FMSMGA003.fm.intel.com with ESMTP; 27 Jul 2015 01:43:12 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t6R8hAxP023357; Mon, 27 Jul 2015 16:43:10 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t6R8h6Cw031122; Mon, 27 Jul 2015 16:43:08 +0800 Received: (from xiaowan1@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t6R8h60L031118; Mon, 27 Jul 2015 16:43:06 +0800 From: Wang Xiao W To: dev@dpdk.org Date: Mon, 27 Jul 2015 16:42:34 +0800 Message-Id: <1437986559-31016-11-git-send-email-xiao.w.wang@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1437986559-31016-1-git-send-email-xiao.w.wang@intel.com> References: <1437986559-31016-1-git-send-email-xiao.w.wang@intel.com> Cc: Wang Xiao W Subject: [dpdk-dev] [PATCH 11/16] fm10k: Re-map all possible VF queues after a VFLR X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" During initialization, the VF counts its rings by walking the TQDLOC registers. This only works if the TQMAP/RQMAP registers are set to map the out-of-bound rings to the first one, so the VF driver can detect when it has run out of queues cleanly. Update the PF to reset the empty TQMAP/RQMAP registers post-VFLR to prevent innocent VF drivers from triggering malicious events. Signed-off-by: Wang Xiao W --- drivers/net/fm10k/base/fm10k_pf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/fm10k/base/fm10k_pf.c b/drivers/net/fm10k/base/fm10k_pf.c index 1004018..eb1adc9 100644 --- a/drivers/net/fm10k/base/fm10k_pf.c +++ b/drivers/net/fm10k/base/fm10k_pf.c @@ -1102,6 +1102,12 @@ STATIC s32 fm10k_iov_reset_resources_pf(struct fm10k_hw *hw, FM10K_WRITE_REG(hw, FM10K_RQMAP(qmap_idx + i), vf_q_idx + i); } + /* repeat the first ring for all of the remaining VF rings */ + for (i = queues_per_pool; i < qmap_stride; i++) { + FM10K_WRITE_REG(hw, FM10K_TQMAP(qmap_idx + i), vf_q_idx); + FM10K_WRITE_REG(hw, FM10K_RQMAP(qmap_idx + i), vf_q_idx); + } + return FM10K_SUCCESS; }