From nobody Sun Sep 14 22:52:48 2025 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 49D61C54EE9 for ; Tue, 13 Sep 2022 15:28:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236425AbiIMP2b (ORCPT ); Tue, 13 Sep 2022 11:28:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236263AbiIMP1W (ORCPT ); Tue, 13 Sep 2022 11:27:22 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E9A27D7A4; Tue, 13 Sep 2022 07:39:01 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3D0B3614D7; Tue, 13 Sep 2022 14:21:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 50080C433C1; Tue, 13 Sep 2022 14:21:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1663078865; bh=+B083C9LqRhrfBZ/u4w509nTtNIWUsa6SH9TcvIq5XI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YDSgpE+a6Bkwi9fb+p9W1zEt8Gp+2E5KhHm/4g+kUHwCYmQJvgx54Ey1eDBXyzMgi I14nb3DaRE2LbgimPKWV/1aaQft5aWOxTud/xxX9bsHIlFW3R0oFiRSA6L723SFSYJ X15/rCbIrNBYjU1uUgeacNn3cUN6eW6eWjPig8A8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sindhu-Devale , Shiraz Saleem , Leon Romanovsky , Sasha Levin Subject: [PATCH 5.15 095/121] RDMA/irdma: Report the correct max cqes from query device Date: Tue, 13 Sep 2022 16:04:46 +0200 Message-Id: <20220913140401.439703126@linuxfoundation.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220913140357.323297659@linuxfoundation.org> References: <20220913140357.323297659@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Sindhu-Devale [ Upstream commit 12faad5e5cf2372af2d51f348b697b5edf838daf ] Report the correct max cqes available to an application taking into account a reserved entry to detect overflow. Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs") Signed-off-by: Sindhu-Devale Signed-off-by: Shiraz Saleem Link: https://lore.kernel.org/r/20220906223244.1119-2-shiraz.saleem@intel.c= om Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/irdma/verbs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/ir= dma/verbs.c index cac4fb228b9b0..adb0e0774256c 100644 --- a/drivers/infiniband/hw/irdma/verbs.c +++ b/drivers/infiniband/hw/irdma/verbs.c @@ -36,7 +36,7 @@ static int irdma_query_device(struct ib_device *ibdev, props->max_send_sge =3D hw_attrs->uk_attrs.max_hw_wq_frags; props->max_recv_sge =3D hw_attrs->uk_attrs.max_hw_wq_frags; props->max_cq =3D rf->max_cq - rf->used_cqs; - props->max_cqe =3D rf->max_cqe; + props->max_cqe =3D rf->max_cqe - 1; props->max_mr =3D rf->max_mr - rf->used_mrs; props->max_mw =3D props->max_mr; props->max_pd =3D rf->max_pd - rf->used_pds; --=20 2.35.1