From patchwork Wed May 12 14:49:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 438425 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FADDC433B4 for ; Wed, 12 May 2021 15:51:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D131661DE6 for ; Wed, 12 May 2021 15:51:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231890AbhELPwQ (ORCPT ); Wed, 12 May 2021 11:52:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:56786 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234910AbhELPmI (ORCPT ); Wed, 12 May 2021 11:42:08 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9BD7761C7F; Wed, 12 May 2021 15:21:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620832908; bh=SNDeB7Z6P2MY6QJujyykjpUFebnKf0w2LNOHf3T2JXw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Af2nKqjTnG0aWFswibCat5q6LPFcQuz5GCwnSs8dPwT2HF28x98xdVcc/MRwXEtMB XB2PzzlbUKkK+cryvEM7PxZyMhYSXKb3m2iDaiO97ieedTDudxcELlGc1ZUksCwPZh RfYrfFp1o2H4KQjS8mjcXjNTlwOm127nfjlin+ws= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Potnuri Bharat Teja , Jason Gunthorpe , Sasha Levin Subject: [PATCH 5.10 470/530] RDMA/cxgb4: add missing qpid increment Date: Wed, 12 May 2021 16:49:40 +0200 Message-Id: <20210512144835.209877155@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144819.664462530@linuxfoundation.org> References: <20210512144819.664462530@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Potnuri Bharat Teja [ Upstream commit 3a6684385928d00b29acac7658a5ae1f2a44494c ] missing qpid increment leads to skipping few qpids while allocating QP. This eventually leads to adapter running out of qpids after establishing fewer connections than it actually supports. Current patch increments the qpid correctly. Fixes: cfdda9d76436 ("RDMA/cxgb4: Add driver for Chelsio T4 RNIC") Link: https://lore.kernel.org/r/20210415151422.9139-1-bharat@chelsio.com Signed-off-by: Potnuri Bharat Teja Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/cxgb4/resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c index 5c95c789f302..e800e8e8bed5 100644 --- a/drivers/infiniband/hw/cxgb4/resource.c +++ b/drivers/infiniband/hw/cxgb4/resource.c @@ -216,7 +216,7 @@ u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx) goto out; entry->qid = qid; list_add_tail(&entry->entry, &uctx->cqids); - for (i = qid; i & rdev->qpmask; i++) { + for (i = qid + 1; i & rdev->qpmask; i++) { entry = kmalloc(sizeof(*entry), GFP_KERNEL); if (!entry) goto out;