From patchwork Wed Aug 3 07:54:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Subbaraya Sundeep X-Patchwork-Id: 12935257 X-Patchwork-Delegate: kuba@kernel.org 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 52EFEC19F2C for ; Wed, 3 Aug 2022 07:54:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237324AbiHCHyq (ORCPT ); Wed, 3 Aug 2022 03:54:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237309AbiHCHyh (ORCPT ); Wed, 3 Aug 2022 03:54:37 -0400 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5FA922B20 for ; Wed, 3 Aug 2022 00:54:36 -0700 (PDT) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 2732fiPC022469; Wed, 3 Aug 2022 00:54:31 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0220; bh=1FS9FJn7WesPK+ScDB5D8GOGSK0OKirB6n8mi3Sol84=; b=VTYATSX8cS9pWXHw+m6EC9fzz9tmVlfGa/GBzE2ad9cVD0XrcQfD80YqEiMK4LAlwSmw 87fjGKnU0zYfCkHGOKb3B0bGKnzCw6k0mUqcTWtLHanuiJv9xTgTDZImZoAo+LKcebxP QpR+c2nfIRahA/Om8BDfTzvx2NrIM2z6U21vs+zxIGP+yHeid/vH1QqgaJlSjE7TqOo9 klBumd7d4mqtLxxy9CQsJwmuME48B0GyyhzXO14nYXCH5nSgvQa6dhQV1hD7S1hw5rtt ooMMHzO5p+wrhx8QFugvCNPT0r30TxKUL43fEVwzm8P2xgJF3pf2iDMhDwCJsRjxvSh/ aQ== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3hqgf1rw1w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Wed, 03 Aug 2022 00:54:31 -0700 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 3 Aug 2022 00:54:29 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 3 Aug 2022 00:54:29 -0700 Received: from hyd1358.marvell.com (unknown [10.29.37.11]) by maili.marvell.com (Postfix) with ESMTP id 151263F7066; Wed, 3 Aug 2022 00:54:26 -0700 (PDT) From: Subbaraya Sundeep To: , , , , , CC: Subbaraya Sundeep Subject: [net v4 PATCH 3/4] octeontx2-af: Fix mcam entry resource leak Date: Wed, 3 Aug 2022 13:24:14 +0530 Message-ID: <1659513255-28667-4-git-send-email-sbhatta@marvell.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1659513255-28667-1-git-send-email-sbhatta@marvell.com> References: <1659513255-28667-1-git-send-email-sbhatta@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: 69uR3Dk-cq_f8xswrX5tJSYbVNmsvi-4 X-Proofpoint-ORIG-GUID: 69uR3Dk-cq_f8xswrX5tJSYbVNmsvi-4 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-03_03,2022-08-02_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The teardown sequence in FLR handler returns if no NIX LF is attached to PF/VF because it indicates that graceful shutdown of resources already happened. But there is a chance of all allocated MCAM entries not being freed by PF/VF. Hence free mcam entries even in case of detached LF. Fixes: c554f9c1574e ("octeontx2-af: Teardown NPA, NIX LF upon receiving FLR") Signed-off-by: Subbaraya Sundeep Signed-off-by: Sunil Goutham --- drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 6 ++++++ drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c index 54e1b27..1484d33 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c @@ -2564,6 +2564,12 @@ static void __rvu_flr_handler(struct rvu *rvu, u16 pcifunc) rvu_blklf_teardown(rvu, pcifunc, BLKADDR_NPA); rvu_reset_lmt_map_tbl(rvu, pcifunc); rvu_detach_rsrcs(rvu, NULL, pcifunc); + /* In scenarios where PF/VF drivers detach NIXLF without freeing MCAM + * entries, check and free the MCAM entries explicitly to avoid leak. + * Since LF is detached use LF number as -1. + */ + rvu_npc_free_mcam_entries(rvu, pcifunc, -1); + mutex_unlock(&rvu->flr_lock); } diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c index 10a4210..13f8dfaa 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c @@ -1096,6 +1096,9 @@ static void npc_enadis_default_entries(struct rvu *rvu, u16 pcifunc, void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf) { + if (nixlf < 0) + return; + npc_enadis_default_entries(rvu, pcifunc, nixlf, false); /* Delete multicast and promisc MCAM entries */ @@ -1107,6 +1110,9 @@ void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf) void rvu_npc_enable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf) { + if (nixlf < 0) + return; + /* Enables only broadcast match entry. Promisc/Allmulti are enabled * in set_rx_mode mbox handler. */