From patchwork Thu Feb 2 10:43:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Machon X-Patchwork-Id: 13125715 X-Patchwork-Delegate: kuba@kernel.org 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 76E37C61DA4 for ; Thu, 2 Feb 2023 10:44:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232431AbjBBKoz (ORCPT ); Thu, 2 Feb 2023 05:44:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232790AbjBBKos (ORCPT ); Thu, 2 Feb 2023 05:44:48 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C074A709BC; Thu, 2 Feb 2023 02:44:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1675334680; x=1706870680; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nPLdB8aEqcsL733U+so7NPCf2aRqmAVkeWDEL6p8u1g=; b=Qyt7O17DfTPxOcHyzc9RbYPWhExZR4yeNc84LJi1VSqwG8g4bND3u0Bn LaH+t9tJgiEgwHjI5FE4UsQPdXnOtY3sBrehFZ9bLUTZZaU51AfTN/5oJ JzRrhhc3rCuR83a0R0/VPN9K6kt8DSElS91RJaabz/Va/o5dAQaEdpCre qnI7oeQcvl9OIA9Jf+nwPdKtq791+K82oND4mM66dY/YtqMkHe2ez/eES mra8I6mjcb5/JMvJF8xhLEUqtBk92T1ewmGXu31IHwlOlYuY/bq2Brljt cdwOO/49AdL3ffEYuioHyPwcmnkpZP2Y9YKrrJC0IMaV+hi6p+RXUvWIV Q==; X-IronPort-AV: E=Sophos;i="5.97,267,1669100400"; d="scan'208";a="195044122" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 02 Feb 2023 03:44:39 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Thu, 2 Feb 2023 03:44:38 -0700 Received: from DEN-LT-70577.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.16 via Frontend Transport; Thu, 2 Feb 2023 03:44:34 -0700 From: Daniel Machon To: CC: , , , , , , , , , , , , , , , , , Subject: [PATCH net-next 05/10] net: microchip: sparx5: add support for PSFP flow-meters Date: Thu, 2 Feb 2023 11:43:50 +0100 Message-ID: <20230202104355.1612823-6-daniel.machon@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230202104355.1612823-1-daniel.machon@microchip.com> References: <20230202104355.1612823-1-daniel.machon@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Add support for configuring PSFP flow-meters (IEEE 802.1Q-2018, 8.6.5.1.3). The VCAP CLM (VCAP IS0 ingress classifier) classifies streams, identified by ISDX (Ingress Service Index, frame metadata), and maps ISDX to flow-meters. SDLB's provide the flow-meter parameters. Signed-off-by: Daniel Machon Reviewed-by: Simon Horman --- .../net/ethernet/microchip/sparx5/Makefile | 2 +- .../ethernet/microchip/sparx5/sparx5_main.h | 9 ++ .../ethernet/microchip/sparx5/sparx5_psfp.c | 88 +++++++++++++++++++ 3 files changed, 98 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c diff --git a/drivers/net/ethernet/microchip/sparx5/Makefile b/drivers/net/ethernet/microchip/sparx5/Makefile index 9f35b0dc3212..1cb1cc3f1a85 100644 --- a/drivers/net/ethernet/microchip/sparx5/Makefile +++ b/drivers/net/ethernet/microchip/sparx5/Makefile @@ -10,7 +10,7 @@ sparx5-switch-y := sparx5_main.o sparx5_packet.o \ sparx5_switchdev.o sparx5_calendar.o sparx5_ethtool.o sparx5_fdma.o \ sparx5_ptp.o sparx5_pgid.o sparx5_tc.o sparx5_qos.o \ sparx5_vcap_impl.o sparx5_vcap_ag_api.o sparx5_tc_flower.o \ - sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o + sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o sparx5_psfp.o sparx5-switch-$(CONFIG_SPARX5_DCB) += sparx5_dcb.o sparx5-switch-$(CONFIG_DEBUG_FS) += sparx5_vcap_debugfs.o diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h index c8bb50bbdcdf..709cad534f50 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -472,6 +472,15 @@ struct sparx5_policer { int sparx5_policer_conf_set(struct sparx5 *sparx5, struct sparx5_policer *pol); +/* sparx5_psfp.c */ +struct sparx5_psfp_fm { + struct sparx5_policer pol; +}; + +int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx, + struct sparx5_psfp_fm *fm, u32 *id); +int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id); + /* Clock period in picoseconds */ static inline u32 sparx5_clk_period(enum sparx5_core_clockfreq cclock) { diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c b/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c new file mode 100644 index 000000000000..7c7390372c71 --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_psfp.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver + * + * Copyright (c) 2023 Microchip Technology Inc. and its subsidiaries. + */ + +#include "sparx5_main_regs.h" +#include "sparx5_main.h" + +/* Pool of available service policers */ +static struct sparx5_pool_entry sparx5_psfp_fm_pool[SPX5_SDLB_CNT]; + +static int sparx5_psfp_fm_get(u32 idx, u32 *id) +{ + return sparx5_pool_get_with_idx(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, idx, + id); +} + +static int sparx5_psfp_fm_put(u32 id) +{ + return sparx5_pool_put(sparx5_psfp_fm_pool, SPX5_SDLB_CNT, id); +} + +static int sparx5_sdlb_conf_set(struct sparx5 *sparx5, + struct sparx5_psfp_fm *fm) +{ + int (*sparx5_sdlb_group_action)(struct sparx5 *sparx5, u32 group, + u32 idx); + + if (!fm->pol.rate && !fm->pol.burst) + sparx5_sdlb_group_action = &sparx5_sdlb_group_del; + else + sparx5_sdlb_group_action = &sparx5_sdlb_group_add; + + sparx5_policer_conf_set(sparx5, &fm->pol); + + return sparx5_sdlb_group_action(sparx5, fm->pol.group, fm->pol.idx); +} + +int sparx5_psfp_fm_add(struct sparx5 *sparx5, u32 uidx, + struct sparx5_psfp_fm *fm, u32 *id) +{ + struct sparx5_policer *pol = &fm->pol; + int ret; + + /* Get flow meter */ + ret = sparx5_psfp_fm_get(uidx, &fm->pol.idx); + if (ret < 0) + return ret; + /* Was already in use, no need to reconfigure */ + if (ret > 1) + return 0; + + ret = sparx5_sdlb_group_get_by_rate(sparx5, pol->rate, pol->burst); + if (ret < 0) + return ret; + + fm->pol.group = ret; + + ret = sparx5_sdlb_conf_set(sparx5, fm); + if (ret < 0) + return ret; + + *id = fm->pol.idx; + + return 0; +} + +int sparx5_psfp_fm_del(struct sparx5 *sparx5, u32 id) +{ + struct sparx5_psfp_fm fm = { .pol.idx = id, + .pol.type = SPX5_POL_SERVICE }; + int ret; + + /* Find the group that this lb belongs to */ + ret = sparx5_sdlb_group_get_by_index(sparx5, id, &fm.pol.group); + if (ret < 0) + return ret; + + ret = sparx5_psfp_fm_put(id); + if (ret < 0) + return ret; + /* Do not reset flow-meter if still in use. */ + if (ret > 0) + return 0; + + return sparx5_sdlb_conf_set(sparx5, &fm); +}