From patchwork Thu Jul 30 08:00:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kurt Kanzenbach X-Patchwork-Id: 1338705 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=BXd/cqfg; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=yiMAZ1fC; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BHNCD461mz9sRW for ; Thu, 30 Jul 2020 18:01:12 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729017AbgG3IBL (ORCPT ); Thu, 30 Jul 2020 04:01:11 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:48664 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728817AbgG3IA5 (ORCPT ); Thu, 30 Jul 2020 04:00:57 -0400 From: Kurt Kanzenbach DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1596096055; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bViW/fwyNVYpaLBkhNhKImtxPFkf0fQzR+cUGcCym+4=; b=BXd/cqfgKJzo3e7MZElg9v7KqK/AcuGZYdTz2T9Psl94M1bQJw9q//oUJKiom6vsiVVEEC 6svirSoZWy1aS5m1pSGiZEVeZudjYvGicmpIy8NeIC8mvoBHN5oWj9FjYhSD07nKV5DFI4 ukFtqIPsXx1GWVYZulv3pLE9IY3BfVoP4NwZbm1oaWi5gactNOm4MXtgJQPrqyg5z5BWQ/ KV0207Njgh073XcsbyzOZu4dlsUWIln73a/7Ln4bEbuPvn5BT2Vs98iEK7VYF+vILoEWmc /mrHicHPBmQVTL6ckc+RsDGblqxQWedoNctUkR/EyehPMzj7XDxQzDl9hBV4mw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1596096055; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bViW/fwyNVYpaLBkhNhKImtxPFkf0fQzR+cUGcCym+4=; b=yiMAZ1fCTf8o8VTw3KXarRGwjJYUVxbl5PmT67iGtYt1RMX71Dvh6DFMrTPYozt2fiSwg4 GUiDSnduSaymNbDQ== To: Richard Cochran Cc: Andrew Lunn , Vivien Didelot , Florian Fainelli , "David S. Miller" , Jakub Kicinski , Jiri Pirko , Ido Schimmel , Heiner Kallweit , Russell King , Grygorii Strashko , Ivan Khoronzhuk , Samuel Zou , netdev@vger.kernel.org, Petr Machata , Kurt Kanzenbach Subject: [PATCH v3 5/9] ethernet: ti: am65-cpts: Use generic helper function Date: Thu, 30 Jul 2020 10:00:44 +0200 Message-Id: <20200730080048.32553-6-kurt@linutronix.de> In-Reply-To: <20200730080048.32553-1-kurt@linutronix.de> References: <20200730080048.32553-1-kurt@linutronix.de> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In order to reduce code duplication between ptp drivers, generic helper functions were introduced. Use them. Signed-off-by: Kurt Kanzenbach --- drivers/net/ethernet/ti/am65-cpts.c | 37 +++++++---------------------- 1 file changed, 9 insertions(+), 28 deletions(-) diff --git a/drivers/net/ethernet/ti/am65-cpts.c b/drivers/net/ethernet/ti/am65-cpts.c index c59a289e428c..2548324afa42 100644 --- a/drivers/net/ethernet/ti/am65-cpts.c +++ b/drivers/net/ethernet/ti/am65-cpts.c @@ -748,42 +748,23 @@ EXPORT_SYMBOL_GPL(am65_cpts_rx_enable); static int am65_skb_get_mtype_seqid(struct sk_buff *skb, u32 *mtype_seqid) { unsigned int ptp_class = ptp_classify_raw(skb); - u8 *msgtype, *data = skb->data; - unsigned int offset = 0; - __be16 *seqid; + struct ptp_header *hdr; + u8 msgtype; + u16 seqid; if (ptp_class == PTP_CLASS_NONE) return 0; - if (ptp_class & PTP_CLASS_VLAN) - offset += VLAN_HLEN; - - switch (ptp_class & PTP_CLASS_PMASK) { - case PTP_CLASS_IPV4: - offset += ETH_HLEN + IPV4_HLEN(data + offset) + UDP_HLEN; - break; - case PTP_CLASS_IPV6: - offset += ETH_HLEN + IP6_HLEN + UDP_HLEN; - break; - case PTP_CLASS_L2: - offset += ETH_HLEN; - break; - default: - return 0; - } - - if (skb->len + ETH_HLEN < offset + OFF_PTP_SEQUENCE_ID + sizeof(*seqid)) + hdr = ptp_parse_header(skb, ptp_class); + if (!hdr) return 0; - if (unlikely(ptp_class & PTP_CLASS_V1)) - msgtype = data + offset + OFF_PTP_CONTROL; - else - msgtype = data + offset; + msgtype = ptp_get_msgtype(hdr, ptp_class); + seqid = be16_to_cpu(hdr->sequence_id); - seqid = (__be16 *)(data + offset + OFF_PTP_SEQUENCE_ID); - *mtype_seqid = (*msgtype << AM65_CPTS_EVENT_1_MESSAGE_TYPE_SHIFT) & + *mtype_seqid = (msgtype << AM65_CPTS_EVENT_1_MESSAGE_TYPE_SHIFT) & AM65_CPTS_EVENT_1_MESSAGE_TYPE_MASK; - *mtype_seqid |= (ntohs(*seqid) & AM65_CPTS_EVENT_1_SEQUENCE_ID_MASK); + *mtype_seqid |= (seqid & AM65_CPTS_EVENT_1_SEQUENCE_ID_MASK); return 1; }