From patchwork Wed Nov 2 11:57:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steen Hegelund X-Patchwork-Id: 13028064 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7CA99C433FE for ; Wed, 2 Nov 2022 11:59:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=P5RbK4t8tGu6A7Zhtfgk1JKerpaEs/jPsSq6wMgppqk=; b=fBZsQE7jowTS15 3WBFBQrAM+ZhKGtaFC+g5X43ycRWjTKoz8TAE/Wld4akiSuU1ihHyLYwciFKNonmyylEnJIHOeQ6M S6vWTySwvwFLTgL12FVse+GbqXKjCjwoO2YDvmllJqS+atL5V6ySiuxqzZs5U7K6FA/3AYf4Dg6r8 gsW4T6uW8c20Ml4LJzeO7xL1cNDjDOxlcCWmXBa0CttSjlaEaCxOiLkxGRS5xfID9pUSpzE+Cvnv2 Ts78r9RIfDLf89odoa7HBnQwCZjreBN2iTICZ7fB9NRMKgfC444DLLtDD5C5g6gMXP3x1BDQ2Oa84 P2XtjdNPmM8VANGYtfIw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oqCO4-00ArCE-Cx; Wed, 02 Nov 2022 11:58:28 +0000 Received: from esa.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oqCNg-00Ar35-P2 for linux-arm-kernel@lists.infradead.org; Wed, 02 Nov 2022 11:58:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1667390284; x=1698926284; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zg1ZOB9VAKT8wYILwCnjHS5DdA5dyjtXwq8br0fWHdo=; b=d+XVDjiJpJhlnzUd9jD3bj1Xzwc0/hfGOQzqv7F79RuMNQ4YPp3kbyZ0 x6RqxXYeWFkPrF3aHtAe1VxKgBGDWTjP5UX6dbtIpfl+0TIsylT9vFOmp zdv3SGFVpeCkf1iEhy/Nvce+Kv6L/eX6x5/VfNu+J73e2PuF8TVjUtGSe hnKGzbzQjgUS8+L2O1pgWBx9DRtcMX0zo6y3e+Viv1/+E8WoKCOdMZ2tV 316fSISPGoCPcKafR1WpsMqr7N9nqXRUOHp6i1wQBjySZfLZJOsiGpNpO 44K/gepmzKkglHOb0cAh4tmr3bGCIGgEiR46X6nHuxs2h0yOor1ZZRjih A==; X-IronPort-AV: E=Sophos;i="5.95,232,1661842800"; d="scan'208";a="181583225" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 02 Nov 2022 04:58:01 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.87.72) by chn-vm-ex02.mchp-main.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Wed, 2 Nov 2022 04:57:56 -0700 Received: from den-dk-m31857.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Wed, 2 Nov 2022 04:57:53 -0700 From: Steen Hegelund To: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni CC: Steen Hegelund , , Randy Dunlap , "Casper Andersson" , Russell King , Wan Jiabing , "Nathan Huckleberry" , , , , "Daniel Machon" , Horatiu Vultur , Lars Povlsen Subject: [PATCH net-next v4 3/7] net: microchip: sparx5: Find VCAP lookup from chain id Date: Wed, 2 Nov 2022 12:57:33 +0100 Message-ID: <20221102115737.4118808-4-steen.hegelund@microchip.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221102115737.4118808-1-steen.hegelund@microchip.com> References: <20221102115737.4118808-1-steen.hegelund@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221102_045804_901479_82EED3CF X-CRM114-Status: GOOD ( 11.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a helper function that finds the lookup index in a VCAP instance from the chain id. Signed-off-by: Steen Hegelund --- drivers/net/ethernet/microchip/vcap/vcap_api.c | 17 +++++++++++++++++ .../ethernet/microchip/vcap/vcap_api_client.h | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api.c b/drivers/net/ethernet/microchip/vcap/vcap_api.c index ace2582d8552..d5b62e43d83f 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api.c +++ b/drivers/net/ethernet/microchip/vcap/vcap_api.c @@ -644,6 +644,23 @@ static int vcap_write_rule(struct vcap_rule_internal *ri) return 0; } +/* Convert a chain id to a VCAP lookup index */ +int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid) +{ + int lookup_first = admin->vinst * admin->lookups_per_instance; + int lookup_last = lookup_first + admin->lookups_per_instance; + int cid_next = admin->first_cid + VCAP_CID_LOOKUP_SIZE; + int cid = admin->first_cid; + int lookup; + + for (lookup = lookup_first; lookup < lookup_last; ++lookup, + cid += VCAP_CID_LOOKUP_SIZE, cid_next += VCAP_CID_LOOKUP_SIZE) + if (cur_cid >= cid && cur_cid < cid_next) + return lookup; + return 0; +} +EXPORT_SYMBOL_GPL(vcap_chain_id_to_lookup); + /* Lookup a vcap instance using chain id */ struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid) { diff --git a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h index 577395402a9a..7d9a227ef834 100644 --- a/drivers/net/ethernet/microchip/vcap/vcap_api_client.h +++ b/drivers/net/ethernet/microchip/vcap/vcap_api_client.h @@ -184,6 +184,8 @@ int vcap_rule_add_action_u32(struct vcap_rule *rule, enum vcap_action_field action, u32 value); /* VCAP lookup operations */ +/* Convert a chain id to a VCAP lookup index */ +int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid); /* Lookup a vcap instance using chain id */ struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid); /* Find information on a key field in a rule */