From patchwork Mon Aug 14 06:04:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ratheesh Kannoth X-Patchwork-Id: 13352393 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 6A3EFC04E69 for ; Mon, 14 Aug 2023 06:07:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232343AbjHNGG7 (ORCPT ); Mon, 14 Aug 2023 02:06:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55270 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233732AbjHNGGH (ORCPT ); Mon, 14 Aug 2023 02:06:07 -0400 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2FEF199B; Sun, 13 Aug 2023 23:05:38 -0700 (PDT) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37E5dnKn028174; Sun, 13 Aug 2023 23:04:53 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=pfpt0220; bh=2e/DgbPH5Z735BTpVc79AFms8kX4Gp8CjDRy+gF54Og=; b=E/8P5/+jNOFDXnIeAK6eLktq00L60xiKYdb2qKHYNE+xCpg5uzwBma5HNeeDm5+xDr/z PtUPN2CVxipoL7xIRglPjHM0nr73ebcCfiBNHKO+ejsrYpyGT1z5owXlVZBvcqnjQTMi xVpi7MTLbBxFyMgVXN2gotRa8b8ZGbhZzCnaie9FgVwAx0KVLDEe3Z0Hs/va3cj30eI3 bQep63FV2AJCT9K2ToAglpvTN/WgrwwX8gb7FG8I4boMHs0BV/6m7+XurB6k5AN7oOOW iqus7BoMwgqKR+ia384IF8M69kir+dL0CX57DDgO8auPhc0KzwAXvTjo5NFnI/q/asdB kQ== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3se9kj4xs9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Sun, 13 Aug 2023 23:04:52 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Sun, 13 Aug 2023 23:04:50 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Sun, 13 Aug 2023 23:04:50 -0700 Received: from marvell-OptiPlex-7090.marvell.com (unknown [10.28.36.165]) by maili.marvell.com (Postfix) with ESMTP id A95D13F707E; Sun, 13 Aug 2023 23:04:25 -0700 (PDT) From: Ratheesh Kannoth To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v1 net] page_pool: Cap queue size to 32k. Date: Mon, 14 Aug 2023 11:34:11 +0530 Message-ID: <20230814060411.2401817-1-rkannoth@marvell.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Proofpoint-GUID: aFZU2RAx_UAE8R4K6KZZzbh7PQU3_GNE X-Proofpoint-ORIG-GUID: aFZU2RAx_UAE8R4K6KZZzbh7PQU3_GNE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-08-13_24,2023-08-10_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Clamp to 32k instead of returning error. Please find discussion at https://lore.kernel.org/lkml/ CY4PR1801MB1911E15D518A77535F6E51E2D308A@CY4PR1801MB1911. namprd18.prod.outlook.com/T/ Fixes: ff7d6b27f894 ("page_pool: refurbish version of page_pool code") Signed-off-by: Ratheesh Kannoth Signed-off-by: --- ChangeLog: v0 -> v1: Rebase && commit message changes --- net/core/page_pool.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/core/page_pool.c b/net/core/page_pool.c index a3e12a61d456..e9dc8d8966ad 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -171,9 +171,10 @@ static int page_pool_init(struct page_pool *pool, if (pool->p.pool_size) ring_qsize = pool->p.pool_size; - /* Sanity limit mem that can be pinned down */ + /* Cap queue size to 32k */ if (ring_qsize > 32768) - return -E2BIG; + ring_qsize = 32768; + /* DMA direction is either DMA_FROM_DEVICE or DMA_BIDIRECTIONAL. * DMA_BIDIRECTIONAL is for allowing page used for DMA sending,