From patchwork Tue Aug 30 13:58:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 9305451 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4286060756 for ; Tue, 30 Aug 2016 13:58:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3392828A83 for ; Tue, 30 Aug 2016 13:58:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2847D28B3C; Tue, 30 Aug 2016 13:58:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96FBC28A83 for ; Tue, 30 Aug 2016 13:58:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751025AbcH3N6p (ORCPT ); Tue, 30 Aug 2016 09:58:45 -0400 Received: from mail.kernel.org ([198.145.29.136]:58030 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750881AbcH3N6p (ORCPT ); Tue, 30 Aug 2016 09:58:45 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C6A3D201EF; Tue, 30 Aug 2016 13:58:43 +0000 (UTC) Received: from localhost (unknown [193.47.165.251]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 44BAC2017D; Tue, 30 Aug 2016 13:58:42 +0000 (UTC) From: Leon Romanovsky To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, Maor Gottlieb Subject: [PATCH rdma-next V1 1/7] IB/mlx4: Add validation to flow specifications parsing Date: Tue, 30 Aug 2016 16:58:30 +0300 Message-Id: <1472565516-11591-2-git-send-email-leon@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1472565516-11591-1-git-send-email-leon@kernel.org> References: <1472565516-11591-1-git-send-email-leon@kernel.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Maor Gottlieb Add validation check that all set fields in flow specification are supported by vendor. Signed-off-by: Maor Gottlieb Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx4/main.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 2af44c2..624a531 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -1361,6 +1361,19 @@ struct mlx4_ib_steering { union ib_gid gid; }; +#define LAST_ETH_FIELD vlan_tag +#define LAST_IB_FIELD sl +#define LAST_IPV4_FIELD dst_ip +#define LAST_TCP_UDP_FIELD src_port + +/* Field is the last supported field */ +#define FIELDS_NOT_SUPPORTED(filter, field)\ + memchr_inv((void *)&filter.field +\ + sizeof(filter.field), 0,\ + sizeof(filter) -\ + offsetof(typeof(filter), field) -\ + sizeof(filter.field)) + static int parse_flow_attr(struct mlx4_dev *dev, u32 qp_num, union ib_flow_spec *ib_spec, @@ -1370,6 +1383,9 @@ static int parse_flow_attr(struct mlx4_dev *dev, switch (ib_spec->type) { case IB_FLOW_SPEC_ETH: + if (FIELDS_NOT_SUPPORTED(ib_spec->eth.mask, LAST_ETH_FIELD)) + return -ENOTSUPP; + type = MLX4_NET_TRANS_RULE_ID_ETH; memcpy(mlx4_spec->eth.dst_mac, ib_spec->eth.val.dst_mac, ETH_ALEN); @@ -1379,6 +1395,9 @@ static int parse_flow_attr(struct mlx4_dev *dev, mlx4_spec->eth.vlan_tag_msk = ib_spec->eth.mask.vlan_tag; break; case IB_FLOW_SPEC_IB: + if (FIELDS_NOT_SUPPORTED(ib_spec->ib.mask, LAST_IB_FIELD)) + return -ENOTSUPP; + type = MLX4_NET_TRANS_RULE_ID_IB; mlx4_spec->ib.l3_qpn = cpu_to_be32(qp_num); @@ -1388,6 +1407,9 @@ static int parse_flow_attr(struct mlx4_dev *dev, case IB_FLOW_SPEC_IPV4: + if (FIELDS_NOT_SUPPORTED(ib_spec->ipv4.mask, LAST_IPV4_FIELD)) + return -ENOTSUPP; + type = MLX4_NET_TRANS_RULE_ID_IPV4; mlx4_spec->ipv4.src_ip = ib_spec->ipv4.val.src_ip; mlx4_spec->ipv4.src_ip_msk = ib_spec->ipv4.mask.src_ip; @@ -1397,6 +1419,9 @@ static int parse_flow_attr(struct mlx4_dev *dev, case IB_FLOW_SPEC_TCP: case IB_FLOW_SPEC_UDP: + if (FIELDS_NOT_SUPPORTED(ib_spec->tcp_udp.mask, LAST_TCP_UDP_FIELD)) + return -ENOTSUPP; + type = ib_spec->type == IB_FLOW_SPEC_TCP ? MLX4_NET_TRANS_RULE_ID_TCP : MLX4_NET_TRANS_RULE_ID_UDP;