From patchwork Sun Jan 17 14:59:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tariq Toukan X-Patchwork-Id: 12025437 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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 BA580C433DB for ; Sun, 17 Jan 2021 15:01:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D53B22525 for ; Sun, 17 Jan 2021 15:01:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729329AbhAQPBW (ORCPT ); Sun, 17 Jan 2021 10:01:22 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:45145 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728664AbhAQPBG (ORCPT ); Sun, 17 Jan 2021 10:01:06 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from tariqt@nvidia.com) with SMTP; 17 Jan 2021 17:00:15 +0200 Received: from dev-l-vrt-206-005.mtl.labs.mlnx (dev-l-vrt-206-005.mtl.labs.mlnx [10.234.206.5]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 10HF0F7B029614; Sun, 17 Jan 2021 17:00:15 +0200 From: Tariq Toukan To: "David S. Miller" , Jakub Kicinski Cc: Boris Pismenny , netdev@vger.kernel.org, Tariq Toukan , Moshe Shemesh , Jay Vosburgh , Veaceslav Falico , Andy Gospodarek , John Fastabend , Daniel Borkmann , Jarod Wilson , Ivan Vecera , Tariq Toukan Subject: [PATCH net-next V3 0/8] TLS device offload for Bond Date: Sun, 17 Jan 2021 16:59:41 +0200 Message-Id: <20210117145949.8632-1-tariqt@nvidia.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Hi, This series opens TX and RX TLS device offload for bond interfaces. This allows bond interfaces to benefit from capable lower devices. We add a new ndo_sk_get_lower_dev() to be used to get the lower dev that corresponds to a given socket. The TLS module uses it to interact directly with the lowest device in chain, and invoke the control operations in tlsdev_ops. This means that the bond interface doesn't have his own struct tlsdev_ops instance and derived logic/callbacks. To keep simple track of the HW and SW TLS contexts, we bind each socket to a specific lower device for the socket's whole lifetime. This is logically valid (and similar to the SW kTLS behavior) in the following bond configuration, so we restrict the offload support to it: ((mode == balance-xor) or (mode == 802.3ad)) and xmit_hash_policy == layer3+4. In this design, TLS TX/RX offload feature flags of the bond device are independent from the lower devices. They reflect the current features state, but are not directly controllable. This is because the bond driver is bypassed by the call to ndo_sk_get_lower_dev(), without him knowing who the caller is. The bond TLS feature flags are set/cleared only according to the configuration of the mode and xmit_hash_policy. Bypass is true only for the control flow. Packets in fast path still go through the bond logic. The design here differs from the xfrm/ipsec offload, where the bond driver has his own copy of struct xfrmdev_ops and callbacks. Regards, Tariq V3: - Use "lower device" instead of "slave". - Make TLS TX/RX devie offload feature flags non-controllable [Fixed]. V2: - Declare RX support. - Enhance the feature flags logic. - Slight modifications for bond_set_xfrm_features(). - RFC: - New design for the tlsdev_ops calls, introduce and use ndo_sk_get_slave() to interact directly with the slave netdev. - Remove bond copy of tlsdev_ops callbacks. - In TLS module: Use netdev_sk_get_lowest_dev(), give exceptions to some checks to allow bond support. Tariq Toukan (8): net: netdevice: Add operation ndo_sk_get_lower_dev net/bonding: Take IP hash logic into a helper net/bonding: Implement ndo_sk_get_lower_dev net/bonding: Take update_features call out of XFRM funciton net/bonding: Implement TLS TX device offload net/bonding: Declare TLS RX device offload support net/tls: Device offload to use lowest netdevice in chain net/tls: Except bond interface from some TLS checks drivers/net/bonding/bond_main.c | 138 +++++++++++++++++++++++++++-- drivers/net/bonding/bond_options.c | 42 +++++++-- include/linux/netdevice.h | 4 + include/net/bonding.h | 4 + net/core/dev.c | 33 +++++++ net/tls/tls_device.c | 4 +- net/tls/tls_device_fallback.c | 2 +- 7 files changed, 211 insertions(+), 16 deletions(-)