From patchwork Tue Sep 15 20:25:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saeed Mahameed X-Patchwork-Id: 1364658 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=zhQsG1tP; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BrbWS4vyWz9sSn for ; Wed, 16 Sep 2020 07:11:32 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728003AbgIOVLR (ORCPT ); Tue, 15 Sep 2020 17:11:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:54384 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728030AbgIOU1n (ORCPT ); Tue, 15 Sep 2020 16:27:43 -0400 Received: from sx1.lan (c-24-6-56-119.hsd1.ca.comcast.net [24.6.56.119]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E8288221E3; Tue, 15 Sep 2020 20:26:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600201561; bh=tmRY6384vWXJWL+5eMhLURimIGeF23La1ZXZtfc6+9Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zhQsG1tPlBC/gf01Zv4pc+VTUvugycYZreiy81LzvBc73TtXCA3vleDimf3fUlhzJ y7r/F+l9MOuEDa1YW+LPH5HVuCfVXmxhQ5XAhixkFebrrT6qZQBWlH3vkGjBtXxuG7 ZT7Cmxv/EbUsbshXkLZ4io0fmqHt39K98TEUHLEE= From: saeed@kernel.org To: "David S. Miller" , Jakub Kicinski Cc: netdev@vger.kernel.org, Eli Cohen , Roi Dayan , Ariel Levkovich , Maor Dickman , Saeed Mahameed Subject: [net-next 14/16] net/mlx5e: Add support for tc trap Date: Tue, 15 Sep 2020 13:25:31 -0700 Message-Id: <20200915202533.64389-15-saeed@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200915202533.64389-1-saeed@kernel.org> References: <20200915202533.64389-1-saeed@kernel.org> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Eli Cohen Support tc trap such that packets can explicitly be forwarded to slow path if they match a specific rule. In the example below, we want packets with src IP equals 7.7.7.8 to be forwarded to software, in which case it will get to the appropriate representor net device. $ tc filter add dev eth1 protocol ip prio 1 root flower skip_sw \ src_ip 7.7.7.8 action trap Signed-off-by: Eli Cohen Reviewed-by: Roi Dayan Reviewed-by: Ariel Levkovich Reviewed-by: Maor Dickman Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index fd53d101d8fd..2dded22a64a3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -3943,6 +3943,16 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, action |= MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT; break; + case FLOW_ACTION_TRAP: + if (!flow_offload_has_one_action(flow_action)) { + NL_SET_ERR_MSG_MOD(extack, + "action trap is supported as a sole action only"); + return -EOPNOTSUPP; + } + action |= (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | + MLX5_FLOW_CONTEXT_ACTION_COUNT); + attr->flags |= MLX5_ESW_ATTR_FLAG_SLOW_PATH; + break; case FLOW_ACTION_MPLS_PUSH: if (!MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, reformat_l2_to_l3_tunnel) ||