From patchwork Thu Jan 12 20:15:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Machon X-Patchwork-Id: 13099353 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 71670C61DB3 for ; Thu, 12 Jan 2023 20:21:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232493AbjALUVj (ORCPT ); Thu, 12 Jan 2023 15:21:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232633AbjALUTh (ORCPT ); Thu, 12 Jan 2023 15:19:37 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6718D63D08; Thu, 12 Jan 2023 12:04:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1673553874; x=1705089874; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UQLuLU/iqMheGfkgsr28maQNwuv/7seT27sZWLi7akw=; b=r5rWUIlVmgu+W4cNK+6H49sAzE19SF8NRpip+cm5DyHjw92fYi261L4Y plZwwOtp1+wCobEriA66XXliEUtOjFoUwRcW5TgBKyzPg4fRUEheABP8G mv2NPWnZ4ijFEg1bqDuEYXIFPEopjQY2v+S6GkJBAs5PGTVpoPzLXHQSU 6uIXB+ZOQ76B/HDxNCZmYhr9YnVim775dvYPv2VQ3NrJU+sIGeyvHQupO pJPF5mL9B8WI8YlpsR7ht5VcCkbwzZFRk18sOa+VFbfsWfM0ZSy5VE1MD cnrakMpJxWhAcN+xbC4w6JNn2GheCKLSroG6GLNTTspoEhJOI0UmcdEc5 A==; X-IronPort-AV: E=Sophos;i="5.97,211,1669100400"; d="scan'208";a="207544414" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 12 Jan 2023 13:04:11 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Thu, 12 Jan 2023 13:04:05 -0700 Received: from DEN-LT-70577.microchip.com (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.16 via Frontend Transport; Thu, 12 Jan 2023 13:04:02 -0700 From: Daniel Machon To: CC: , , , , , , , , , , , , , , , , Subject: [PATCH net-next 4/6] net: dcb: add helper functions to retrieve PCP and DSCP rewrite maps Date: Thu, 12 Jan 2023 21:15:52 +0100 Message-ID: <20230112201554.752144-5-daniel.machon@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230112201554.752144-1-daniel.machon@microchip.com> References: <20230112201554.752144-1-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 two new helper functions to retrieve a mapping of priority to PCP and DSCP bitmasks, where each bitmap contains ones in positions that match a rewrite entry. dcb_ieee_getrewr_prio_dscp_mask_map() reuses the dcb_ieee_app_prio_map, as this struct is already used for a similar mapping in the app table. Signed-off-by: Daniel Machon --- include/net/dcbnl.h | 10 +++++++++ net/dcb/dcbnl.c | 52 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) diff --git a/include/net/dcbnl.h b/include/net/dcbnl.h index fe7dfb8bcb5b..42207fc44660 100644 --- a/include/net/dcbnl.h +++ b/include/net/dcbnl.h @@ -29,12 +29,22 @@ int dcb_ieee_setapp(struct net_device *, struct dcb_app *); int dcb_ieee_delapp(struct net_device *, struct dcb_app *); u8 dcb_ieee_getapp_mask(struct net_device *, struct dcb_app *); +struct dcb_rewr_prio_pcp_map { + u16 map[IEEE_8021QAZ_MAX_TCS]; +}; + +void dcb_getrewr_prio_pcp_mask_map(const struct net_device *dev, + struct dcb_rewr_prio_pcp_map *p_map); + struct dcb_ieee_app_prio_map { u64 map[IEEE_8021QAZ_MAX_TCS]; }; void dcb_ieee_getapp_prio_dscp_mask_map(const struct net_device *dev, struct dcb_ieee_app_prio_map *p_map); +void dcb_getrewr_prio_dscp_mask_map(const struct net_device *dev, + struct dcb_ieee_app_prio_map *p_map); + struct dcb_ieee_app_dscp_map { u8 map[64]; }; diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index b52acf30a0bc..8a0f33df27ea 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -2235,6 +2235,58 @@ int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del) } EXPORT_SYMBOL(dcb_ieee_delapp); +/* dcb_getrewr_prio_pcp_mask_map - For a given device, find mapping from + * priorities to the PCP and DEI values assigned to that priority. + */ +void dcb_getrewr_prio_pcp_mask_map(const struct net_device *dev, + struct dcb_rewr_prio_pcp_map *p_map) +{ + int ifindex = dev->ifindex; + struct dcb_app_type *itr; + u8 prio; + + memset(p_map->map, 0, sizeof(p_map->map)); + + spin_lock_bh(&dcb_lock); + list_for_each_entry(itr, &dcb_rewr_list, list) { + if (itr->ifindex == ifindex && + itr->app.selector == DCB_APP_SEL_PCP && + itr->app.protocol < 16 && + itr->app.priority < IEEE_8021QAZ_MAX_TCS) { + prio = itr->app.priority; + p_map->map[prio] |= 1 << itr->app.protocol; + } + } + spin_unlock_bh(&dcb_lock); +} +EXPORT_SYMBOL(dcb_getrewr_prio_pcp_mask_map); + +/* dcb_getrewr_prio_dscp_mask_map - For a given device, find mapping from + * priorities to the DSCP values assigned to that priority. + */ +void dcb_getrewr_prio_dscp_mask_map(const struct net_device *dev, + struct dcb_ieee_app_prio_map *p_map) +{ + int ifindex = dev->ifindex; + struct dcb_app_type *itr; + u8 prio; + + memset(p_map->map, 0, sizeof(p_map->map)); + + spin_lock_bh(&dcb_lock); + list_for_each_entry(itr, &dcb_rewr_list, list) { + if (itr->ifindex == ifindex && + itr->app.selector == IEEE_8021QAZ_APP_SEL_DSCP && + itr->app.protocol < 64 && + itr->app.priority < IEEE_8021QAZ_MAX_TCS) { + prio = itr->app.priority; + p_map->map[prio] |= 1ULL << itr->app.protocol; + } + } + spin_unlock_bh(&dcb_lock); +} +EXPORT_SYMBOL(dcb_getrewr_prio_dscp_mask_map); + /* * dcb_ieee_getapp_prio_dscp_mask_map - For a given device, find mapping from * priorities to the DSCP values assigned to that priority. Initialize p_map