From patchwork Tue Jul 5 10:49:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ratheesh Kannoth X-Patchwork-Id: 12906371 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CD61C433EF for ; Tue, 5 Jul 2022 10:49:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231950AbiGEKtz (ORCPT ); Tue, 5 Jul 2022 06:49:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229853AbiGEKtw (ORCPT ); Tue, 5 Jul 2022 06:49:52 -0400 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B6216570; Tue, 5 Jul 2022 03:49:51 -0700 (PDT) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 264MMtr8032125; Tue, 5 Jul 2022 03:49:39 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=pfpt0220; bh=3T8cVMF9jMNz98b/gbgituSqVWv5rIRFxggjD3KvqFc=; b=UEMcP6LCL8+6L74PIIvTdMMcrODZ2KW7accrIaauWSLbr89yT8e3HN3l13I2SozK4V9O qS+ixxunWPpXbRwTcshAanAdJh1xJ25dzMgzLRQ0z86+MKCoYpbe8DY7tD4hgLaXTLOw 2Vg9kmz5QW03TVN3mbULbhr33JPNUCkgu/vhiRgUjszLYkHaWXBhUM+tsDtKj6PC+vnv S51SNjR3Q3q1xnKopoTy/Gh6TPzX5UgI7g104ynLyrUbH2rNxe93xpkkHp39qOVHi/eG XiBLTdYGtMoiH9z7PPfQ0A1BRFjLQYytExN2R+hSQdbHPVCGxkG0S/a/OMVatekOSAku cw== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3h2nhnrnup-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 05 Jul 2022 03:49:39 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 5 Jul 2022 03:49:36 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Tue, 5 Jul 2022 03:49:36 -0700 Received: from IPBU-BLR-SERVER1.marvell.com (IPBU-BLR-SERVER1.marvell.com [10.28.8.41]) by maili.marvell.com (Postfix) with ESMTP id 8C0EF3F7040; Tue, 5 Jul 2022 03:49:34 -0700 (PDT) From: Ratheesh Kannoth To: , CC: , , , , , Ratheesh Kannoth Subject: [PATCH 00/12] *** Exact Match Table and Field hash *** Date: Tue, 5 Jul 2022 16:19:11 +0530 Message-ID: <20220705104923.2113935-1-rkannoth@marvell.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: sO_I6BXDFmwniOps0uX22B_abBkhgECB X-Proofpoint-GUID: sO_I6BXDFmwniOps0uX22B_abBkhgECB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-05_08,2022-06-28_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org *** Exact match table and Field hash support for CN10KB silicon *** Ratheesh Kannoth (11): These patch series enables exact match table in CN10KB silicon. Legacy silicon used NPC mcam to do packet fields/channel matching for NPC rules. NPC mcam resources exahausted as customer use case increased. Supporting many DMAC filter becomes a challenge, as RPM based filter count is less. Exact match table has 4way 2K entry table and a 32 entry fully associative cam table. Second table is to handle hash table collision overflows in 4way 2K entry table. Enabling exact match table results in KEX key to be appended with Hit/Miss status. This can be used to match in NPC mcam for a more generic rule and drop those packets than having DMAC drop rules for each DMAC entry in NPC mcam. octeontx2-af: Exact match support octeontx2-af: Exact match scan from kex profile octeontx2-af: devlink configuration support octeontx2-af: FLR handler for exact match table. octeontx2-af: Drop rules for NPC MCAM octeontx2-af: Debugsfs support for exact match. octeontx2: Modify mbox request and response structures octeontx2-af: Wrapper functions for mac addr add/del/update/reset octeontx2-af: Invoke exact match functions if supported octeontx2-pf: Add support for exact match table. octeontx2-af: Enable Exact match flag in kex profile Suman Ghosh (1): CN10KB variant of CN10K series of silicons supports a new feature where in a large protocol field (eg 128bit IPv6 DIP) can be condensed into a small hashed 32bit data. This saves a lot of space in MCAM key and allows user to add more protocol fields into the filter. A max of two such protocol data can be hashed. This patch adds support for hashing IPv6 SIP and/or DIP. octeontx2-af: Support to hash reduce of actual field into MCAM key .../ethernet/marvell/octeontx2/af/Makefile | 2 +- First patch in the series "octeontx2-af: Support to hash reduce of actual field into MCAM key" introduced new C file. Makefile is modified to compile the same. .../net/ethernet/marvell/octeontx2/af/mbox.h | 41 +- Mbox request and response structures requires modification. RPM based DMAC filter can be modified at any location in the RPM filter table as entry's location has no relation to content. But for NPC exact match's 2K, 4way table is based on hash. This means that modification of an entry may fail if hash mismatches. In these cases, we need to delete existing entry and create a new entry in a different slot determined by hash value. This index has to be returned to caller. .../net/ethernet/marvell/octeontx2/af/npc.h | 25 + New data types (enums and macros) for this feature. .../marvell/octeontx2/af/npc_profile.h | 5 +- Kex profile changes to add exact match HIT bit in the Key. Inorder to accommodate this nibble, NPC_PARSE_NIBBLE_ERRCODE is deleted as it is not used. .../net/ethernet/marvell/octeontx2/af/rvu.c | 17 + Exact match HW capability flag is initialized to false. FLR handler changes to invoke rvu_npc_exact_reset() to free all exact match resources in case of interface reset. .../net/ethernet/marvell/octeontx2/af/rvu.h | 24 +- Exact match table info is defined in rvu_hwinfo structure. This table structure is heap allocated and maintains all information about available/free/allocated resources. .../ethernet/marvell/octeontx2/af/rvu_cgx.c | 41 +- As of today, RPM based DMAC filter is configured upon user command. Each of these mbox handler is trapped and checked for NPC exact match support. If support is enabled, invokes Exact match API instead of RPM dmac based calls. .../marvell/octeontx2/af/rvu_debugfs.c | 179 ++ Three debugfs entries would be created if Exact match table is supported. 1. exact_entries : List out npc exact match entries 2. exact_info : Info related exact match tables (mem and cam table) 3. exact_drop_cnt: Drop packet counter for each NPC mcam drop rule. .../marvell/octeontx2/af/rvu_devlink.c | 71 +- Devlink provides flexibility to user to switch to RPM based DMAC filters on CN10KB silicon. Please note that devlink command fails if user added DMAC filters prior to devlink command to disable exact match table. .../ethernet/marvell/octeontx2/af/rvu_nix.c | 7 + Promiscous mode enable must disable this Exact match table based drop rule on NPC mcam. set rx mode routine calls enable/disable corresponding NPC exact drop rule when promiscous mode is toggled. .../ethernet/marvell/octeontx2/af/rvu_npc.c | 51 +- APIs to reserve NPC mcam entries. This is used to reserve and configure NPC drop rules. .../marvell/octeontx2/af/rvu_npc_fs.c | 162 +- For each PF, there is a drop rule installed in NPC mcam. This installation is done during rvu probe itself. Drop rule has multicast and broadcast bits turned off. This means that broadcast and multicast packets will never get dropped irrespective of NPC exact match table. This rule action is drop if exact table match bit 0 and channel is matched. This means if there is no hit is exact match table and channel match, packets will be dropped. .../marvell/octeontx2/af/rvu_npc_fs.h | 17 + Function declarations. .../marvell/octeontx2/af/rvu_npc_hash.c | 1958 +++++++++++++++++ New file added. This file implements add/del/update to exact match table, probing of the feature and invokes function to install drop ruleis in NPC mcam. .../marvell/octeontx2/af/rvu_npc_hash.h | 233 ++ function declarations for rvu_npc_hash.c .../ethernet/marvell/octeontx2/af/rvu_reg.h | 15 + Register access macros for NPC exact match. .../marvell/octeontx2/nic/otx2_common.h | 10 +- Since NPC exact match table has more entries than RPM DMAC filter, size of bmap_to_dmacindex is increased from 8 to 32bit. Maximum number of dmac entries available also increased (increased the size of bitmap) .../marvell/octeontx2/nic/otx2_dmac_flt.c | 46 +- .../marvell/octeontx2/nic/otx2_flows.c | 40 +- .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 2 +- Above change in marvell/octeontx2/nic/otx2_common.h, require corresponding modification in these 3 C files. Please note that we need to modify/change existing entry index as mentioned in description of net/ethernet/marvell/octeontx2/af/mbox.h in this cover letter. 20 files changed, 2879 insertions(+), 67 deletions(-) create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.h create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h --- 2.25.1