From patchwork Fri Dec 11 17:03:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 342580 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,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 0D969C4361B for ; Fri, 11 Dec 2020 18:52:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D328624050 for ; Fri, 11 Dec 2020 18:52:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394465AbgLKRHG (ORCPT ); Fri, 11 Dec 2020 12:07:06 -0500 Received: from wout1-smtp.messagingengine.com ([64.147.123.24]:59547 "EHLO wout1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732146AbgLKRGS (ORCPT ); Fri, 11 Dec 2020 12:06:18 -0500 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id 76DC4AD5; Fri, 11 Dec 2020 12:05:12 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Fri, 11 Dec 2020 12:05:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :message-id:mime-version:subject:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=DKeDNyWEfxSJexRMw /bQpCDiE0tQYfrSt4JLmK7Fx4c=; b=Sn1NR3OF0pDLbJVFuyiUlhEBLvYVkc3rN HsgAEMes4vuZTyJuBJGKkW1/DulUelKre6u7rJ0YXwxonYPjTwrE3FtjtGdvGdrO rZA78wDnqEBOIHu1TSw1AsE98Rlh2u4+qsNSEdMLzj4/LsELhtWpPxlCH3ON3xXZ H0xuT5ExIeY+LP/L3vsSFuxFF4uj5KATnlE3BydUUl5xy3FjS6sqrsY3hghyQ0jO yRtgJkI4uNusIEos1h9qygfjS/mUHEYW46b4dBEWaqfDVO6R5wu0ppaU5Gx5ox0A k7xH4816hCe6NG6ftfnyB8J/Q2DTYJsWgvEjiNeuoTsvfCDRqbk8Q== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrudekvddgleekucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofgggfestdekredtre dttdenucfhrhhomhepkfguohcuufgthhhimhhmvghluceoihguohhstghhsehiughoshgt hhdrohhrgheqnecuggftrfgrthhtvghrnhepleeuffeukeejteeugfdvgfdtheefgfejud ethfdtveeujedvkefguddvudfhjeefnecuffhomhgrihhnpehkvghrnhgvlhdrohhrghen ucfkphepkeegrddvvdelrdduheefrdejkeenucevlhhushhtvghrufhiiigvpedtnecurf grrhgrmhepmhgrihhlfhhrohhmpehiughoshgthhesihguohhstghhrdhorhhg X-ME-Proxy: Received: from shredder.lan (igld-84-229-153-78.inter.net.il [84.229.153.78]) by mail.messagingengine.com (Postfix) with ESMTPA id 780BB1080069; Fri, 11 Dec 2020 12:05:10 -0500 (EST) From: Ido Schimmel To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, jiri@nvidia.com, mlxsw@nvidia.com, Ido Schimmel Subject: [PATCH net-next 00/15] mlxsw: Introduce initial XM router support Date: Fri, 11 Dec 2020 19:03:58 +0200 Message-Id: <20201211170413.2269479-1-idosch@idosch.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ido Schimmel This patch set implements initial eXtended Mezzanine (XM) router support. The XM is an external device connected to the Spectrum-{2,3} ASICs using dedicated Ethernet ports. Its purpose is to increase the number of routes that can be offloaded to hardware. This is achieved by having the ASIC act as a cache that refers cache misses to the XM where the FIB is stored and LPM lookup is performed. Future patch sets will add more sophisticated cache flushing and selftests that utilize cache counters on the ASIC, which we plan to expose via devlink-metric [1]. Patch set overview: Patches #1-#2 add registers to insert/remove routes to/from the XM and to enable/disable it. Patch #3 utilizes these registers in order to implement XM-specific router low-level operations. Patches #4-#5 query from firmware the availability of the XM and the local ports that are used to connect the ASIC to the XM, so that netdevs will not be created for them. Patches #6-#8 initialize the XM by configuring its cache parameters. Patch #9-#10 implement cache management, so that LPM lookup will be correctly cached in the ASIC. Patches #11-#13 implement cache flushing, so that routes insertions/removals to/from the XM will flush the affected entries in the cache. Patch #14 configures the ASIC to allocate half of its memory for the cache, so that room will be left for other entries (e.g., FDBs, neighbours). Patch #15 starts using the XM for IPv4 route offload, when available. [1] https://lore.kernel.org/netdev/20200817125059.193242-1-idosch@idosch.org/ Jiri Pirko (15): mlxsw: reg: Add XM Direct Register mlxsw: reg: Add Router XLT Enable Register mlxsw: spectrum_router: Introduce XM implementation of router low-level ops mlxsw: pci: Obtain info about ports used by eXtended mezanine mlxsw: Ignore ports that are connected to eXtended mezanine mlxsw: reg: Add Router XLT M select Register mlxsw: reg: Add XM Lookup Table Query Register mlxsw: spectrum_router: Introduce per-ASIC XM initialization mlxsw: reg: Add XM Router M Table Register mlxsw: spectrum_router_xm: Implement L-value tracking for M-index mlxsw: reg: Add Router LPM Cache ML Delete Register mlxsw: reg: Add Router LPM Cache Enable Register mlxsw: spectrum_router_xm: Introduce basic XM cache flushing mlxsw: spectrum: Set KVH XLT cache mode for Spectrum2/3 mlxsw: spectrum_router: Use eXtended mezzanine to offload IPv4 router drivers/net/ethernet/mellanox/mlxsw/Makefile | 1 + drivers/net/ethernet/mellanox/mlxsw/cmd.h | 30 + drivers/net/ethernet/mellanox/mlxsw/core.c | 12 + drivers/net/ethernet/mellanox/mlxsw/core.h | 12 +- drivers/net/ethernet/mellanox/mlxsw/minimal.c | 3 +- drivers/net/ethernet/mellanox/mlxsw/pci.c | 33 +- drivers/net/ethernet/mellanox/mlxsw/reg.h | 585 ++++++++++++- .../net/ethernet/mellanox/mlxsw/spectrum.c | 5 + .../ethernet/mellanox/mlxsw/spectrum_router.c | 23 +- .../ethernet/mellanox/mlxsw/spectrum_router.h | 10 + .../mellanox/mlxsw/spectrum_router_xm.c | 812 ++++++++++++++++++ 11 files changed, 1518 insertions(+), 8 deletions(-) create mode 100644 drivers/net/ethernet/mellanox/mlxsw/spectrum_router_xm.c