From mboxrd@z Thu Jan 1 00:00:00 1970 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=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 DFB08C0650E for ; Thu, 4 Jul 2019 23:49:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BDDA7216FD for ; Thu, 4 Jul 2019 23:49:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727784AbfGDXtg (ORCPT ); Thu, 4 Jul 2019 19:49:36 -0400 Received: from mail.us.es ([193.147.175.20]:33468 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727757AbfGDXtb (ORCPT ); Thu, 4 Jul 2019 19:49:31 -0400 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id 0B67E81402 for ; Fri, 5 Jul 2019 01:49:30 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id E208B115113 for ; Fri, 5 Jul 2019 01:49:29 +0200 (CEST) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id DFFA0115112; Fri, 5 Jul 2019 01:49:29 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 6243C1150B5; Fri, 5 Jul 2019 01:49:26 +0200 (CEST) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Fri, 05 Jul 2019 01:49:26 +0200 (CEST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from salvia.here (sys.soleta.eu [212.170.55.40]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id 2E78E4265A31; Fri, 5 Jul 2019 01:49:25 +0200 (CEST) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netdev@vger.kernel.org Cc: netfilter-devel@vger.kernel.org, davem@davemloft.net, thomas.lendacky@amd.com, f.fainelli@gmail.com, ariel.elior@cavium.com, michael.chan@broadcom.com, madalin.bucur@nxp.com, yisen.zhuang@huawei.com, salil.mehta@huawei.com, jeffrey.t.kirsher@intel.com, tariqt@mellanox.com, saeedm@mellanox.com, jiri@mellanox.com, idosch@mellanox.com, jakub.kicinski@netronome.com, peppe.cavallaro@st.com, grygorii.strashko@ti.com, andrew@lunn.ch, vivien.didelot@gmail.com, alexandre.torgue@st.com, joabreu@synopsys.com, linux-net-drivers@solarflare.com, ogerlitz@mellanox.com, Manish.Chopra@cavium.com, marcelo.leitner@gmail.com, mkubecek@suse.cz, venkatkumar.duvvuru@broadcom.com, maxime.chevallier@bootlin.com, cphealy@gmail.com Subject: [PATCH 11/15 net-next,v2] net: flow_offload: don't allow subsystem to reuse blocks Date: Fri, 5 Jul 2019 01:48:39 +0200 Message-Id: <20190704234843.6601-12-pablo@netfilter.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190704234843.6601-1-pablo@netfilter.org> References: <20190704234843.6601-1-pablo@netfilter.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Drivers need to be updated to support this, return EBUSY by now. Signed-off-by: Pablo Neira Ayuso --- v2: no changes. net/core/flow_offload.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c index 0b8d088d822e..8c20f4740800 100644 --- a/net/core/flow_offload.c +++ b/net/core/flow_offload.c @@ -206,6 +206,12 @@ struct flow_block_cb *flow_block_cb_alloc(struct net *net, tc_setup_cb_t *cb, { struct flow_block_cb *block_cb; + list_for_each_entry(block_cb, &flow_block_cb_list, global_list) { + if (block_cb->cb == cb && + block_cb->cb_ident == cb_ident) + return ERR_PTR(-EBUSY); + } + block_cb = kzalloc(sizeof(*block_cb), GFP_KERNEL); if (IS_ERR(block_cb)) return block_cb; -- 2.11.0