From patchwork Tue Apr 12 02:29:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhijian Li (Fujitsu)" X-Patchwork-Id: 12809965 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 D1E1FC433F5 for ; Tue, 12 Apr 2022 02:22:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242026AbiDLCYt (ORCPT ); Mon, 11 Apr 2022 22:24:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229921AbiDLCYs (ORCPT ); Mon, 11 Apr 2022 22:24:48 -0400 Received: from heian.cn.fujitsu.com (mail.cn.fujitsu.com [183.91.158.132]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 97C8F2E9CC; Mon, 11 Apr 2022 19:22:32 -0700 (PDT) IronPort-Data: A9a23:p4k5aK0V+0KdDT+H6fbD5Qpzkn2cJEfYwER7XOPLsXnJ1Dh302ACnDMfC2mDaanbNGf0fYh/PI+w8B4B65/Ry9U2QQE+nZ1PZygU8JKaX7x1DatR0xu6d5SFFAQ+hyknQoGowPscEzmM9n9BDpC79SMmjfvQH+KlYAL5EnsZqTFMGX5JZS1Ly7ZRbr5A2bBVMivV0T/Ai5S31GyNh1aYBlkpB5er83uDihhdVAQw5TTSbdgT1LPXeuJ84Jg3fcldJFOgKmVY83LTegrN8F251juxExYFAdXjnKv5c1ERX/jZOg3mZnh+AvDk20Yd4HdplPtT2Pk0MC+7jx2NnsJxyddMvJqYRxorP7HXhaIWVBww/yRWZPcdpO+XfSLg2SCU5wicG5f2+N18HUMkLI9Cor4vKW5L/P0cbjsKa3irg+Ow3aL+SeR2gMknBNfkMZlZuXx6yzzdS/E8TvjrR6TM+M8dxjs1j+hQEvvEIckUczxiaFLHeRInElUYB7osneqwiz/0elVlRPi9zUYsyzGLilUvj/62a5yIEuFmjP59xi6wzl8qNUylav3CCOGi9A== IronPort-HdrOrdr: A9a23:kC50MajHjCrR/nL6ql6SZt9JT3BQXuYji2hC6mlwRA09TyX4rbHLoB1/73LJYVkqNk3I5urrBEDtexLhHP1OkOws1NWZLWrbUQKTRekM0WKI+UyDJ8SRzI5g/JYlW61/Jfm1NlJikPv9iTPSL/8QhPWB74Ck7N2z80tQ X-IronPort-AV: E=Sophos;i="5.88,333,1635177600"; d="scan'208";a="123488427" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 12 Apr 2022 10:22:31 +0800 Received: from G08CNEXMBPEKD05.g08.fujitsu.local (unknown [10.167.33.204]) by cn.fujitsu.com (Postfix) with ESMTP id 72EE44D16FCF; Tue, 12 Apr 2022 10:22:28 +0800 (CST) Received: from G08CNEXCHPEKD09.g08.fujitsu.local (10.167.33.85) by G08CNEXMBPEKD05.g08.fujitsu.local (10.167.33.204) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Tue, 12 Apr 2022 10:22:29 +0800 Received: from localhost.localdomain (10.167.225.141) by G08CNEXCHPEKD09.g08.fujitsu.local (10.167.33.209) with Microsoft SMTP Server id 15.0.1497.23 via Frontend Transport; Tue, 12 Apr 2022 10:22:26 +0800 From: Li Zhijian To: , , CC: , Li Zhijian Subject: [PATCH 2/3] RDMA/rxe: Update wqe_index for each wqe error completion Date: Tue, 12 Apr 2022 10:29:02 +0800 Message-ID: <20220412022903.574238-2-lizhijian@fujitsu.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220412022903.574238-1-lizhijian@fujitsu.com> References: <20220412022903.574238-1-lizhijian@fujitsu.com> MIME-Version: 1.0 X-yoursite-MailScanner-ID: 72EE44D16FCF.A0068 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: lizhijian@fujitsu.com Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Previously, if user space keep sending abnormal wqe, qeueu.prod will keep increasing while queue.index doesn't. Once queue.index==qeueu.prod in next round, req_next_wqe() will treat queue is empty. In such case, no new completion would be generated. Update wqe_index for each wqe completion so that req_next_wqe() can get next wqe properly. Signed-off-by: Li Zhijian --- drivers/infiniband/sw/rxe/rxe_req.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c index bf7493bab9b9..c369bebaf02e 100644 --- a/drivers/infiniband/sw/rxe/rxe_req.c +++ b/drivers/infiniband/sw/rxe/rxe_req.c @@ -760,6 +760,8 @@ int rxe_requester(void *arg) if (ah) rxe_put(ah); err: + /* update wqe_index for each wqe completion */ + qp->req.wqe_index = queue_next_index(qp->sq.queue, qp->req.wqe_index); wqe->state = wqe_state_error; __rxe_do_task(&qp->comp.task);